CN106338709A - Intelligent meter system based on embedded platform - Google Patents
Intelligent meter system based on embedded platform Download PDFInfo
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- CN106338709A CN106338709A CN201610797749.2A CN201610797749A CN106338709A CN 106338709 A CN106338709 A CN 106338709A CN 201610797749 A CN201610797749 A CN 201610797749A CN 106338709 A CN106338709 A CN 106338709A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses an intelligent meter system based on an embedded platform. The system comprises a front-end induction circuit, a front pre-processing circuit, an electric energy acquisition circuit, an interface circuit, an embedded processor module, a modem circuit, a wireless transceiver module, a lower frequency filtering attenuation circuit, a narrowband antenna, a low frequency wireless coupling circuit, a low frequency demodulation circuit and a data transmission comparator, wherein the front-end induction circuit and the electric energy acquisition circuit are sequentially connected with an electric parameter sensor set, a fault threshold comparison circuit, a fault decision circuit and the embedded processor module, and the embedded processor module is connected with the data transmission comparator, a graph transmission comparator, the wireless transceiver module, an image signal transmission module and an image identification module. According to the system, the electric parameter information can be reliably and precisely acquired and measured, and transmission reliability, communication consistency and data accuracy of the wireless remote meter reading information, the interaction data displayed through a local meter terminal and the image data information of a user mobile terminal platform are guaranteed.
Description
Technical field
The present invention relates to intelligent electric meter system technical field is and in particular to a kind of intelligent electric meter system based on embedded platform
System.
Background technology
Now, due to exploitation and quickening, the management for electric energy and the performance of electric energy meter using speed, efficiency of electric energy
Just there are more higher requirements.The exploration rationally utilizing aspect with the continuous power system expanding and in electric energy, electric energy
Table occurs in that some shortcomings, as accuracy is low, be suitable for narrow, single function of frequency range etc..
Due to microelectric technique and the computer technology of continuous development, people have developed many different types of intelligence electricity
Table, occurs in that the products such as intelligent wireless ammeter.But because the technology that module is simple, integral transplanting, suitability difference etc. are brought is short
Plate, causes that communication efficiency is poor, the consequence such as accuracy is low, poor reliability, and various product be subject to install the condition on the spot built and
The impact of the Real-time intensity that on-site wireless communication network covers is very big, constantly creates and fails to report, misrepresents deliberately, mixing report phenomenon；Ultimately result in
Situations such as meter reading data is inconsistent, transmission delay, information fluctuate, this brings very big puzzlement to sale of electricity unit and terminal client,
Cause substantial amounts of contradiction and disputes between sale of electricity unit and electricity consumption colony.
Content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of can be accurate to electric parameter information
Reliable collection and measurement, have ensured that interaction data that wireless long-distance meter-reading information, local ammeter terminal show and user are mobile whole
The reliability of transmission of end platform image data information three, the accuracy of concordance data of communication based on embedded flat
The intelligent electric meter system of platform.
For achieving the above object, the technical scheme is that a kind of intelligent electric meter based on embedded platform
System, including the front end sensor circuit being sequentially connected, front end preprocessing circuit, electric energy acquisition circuit, interface circuit, embedded place
Reason device module, modulation-demodulation circuit, radio receiving transmitting module, low frequency filtering attenuator circuit, narrow-band antenna, low-frequency wireless coupling electricity
Road, low frequency detecting circuit sum pass comparator；Front end sensor circuit and electric energy acquisition circuit are connected with Optic Sensors in Power System in turn
Group, fault threshold Comparison Circuit, fault decision circuit and flush bonding processor module；Electric energy acquisition circuit is connected with coding in turn
Circuit, display driver circuit, display module, image capture module, picture recognition module, picture signal transport module, high frequency filter
Wave attenuation circuit, broad-band antenna, high frequency wireless coupling circuit, high frequency detecting circuit and figure pass comparator；Flush bonding processor mould
Block is connected to number and passes comparator, figure biography comparator, radio receiving transmitting module, picture signal transport module and image recognition mould
Block；Number passes comparator and figure passes comparator and is connected with threshold value memory.
By adopting technique scheme, by Optic Sensors in Power System group and relevant link circuit to front end sensor circuit and
Electric energy acquisition circuit carries out malfunction monitoring and judgement, and fault decision signal is inputted flush bonding processor module；By low frequency
Wireless coupling circuit and relevant link circuit carry out the monitoring of frequency drift and power swing and compare to low-frequency wireless signals, and
Comparison result information input flush bonding processor module；By picture recognition module and relevant link circuit to electric parameter signal
Flush bonding processor module is inputted after being acquired identification, and by high frequency wireless coupling circuit and relevant link circuit to height
Frequency wireless signal carries out the monitoring of frequency drift and power swing and compares, and comparison result information input flush bonding processor
Module；Finally by flush bonding processor module to fault decision signal, the frequency frequency drift of low-frequency wireless signals and power swing
Information, the frequency frequency drift of high-frequency wireless signals and power swing information, level mode electric energy parameter signals and image model electricity
Can parameter signals carry out integrated treatment, backward radio receiving transmitting module and picture signal transport module input control signal, from
And complete the precisely reliable collection of electric parameter information and measure, and electric energy parameter signals are reliably wirelessly transferred.Electric parameter is believed
Precisely reliable collection and the measurement of breath, and electric energy parameter signals are reliably wirelessly transferred, ensured wireless long-distance meter-reading information, this
Interaction data and the reliability of transmission of customer mobile terminal platform image data information three, communication that ground ammeter terminal shows
Concordance data accuracy.
Front end of the present invention sensor circuit: for inductive voltage and current and change into electric parameter information input front end and locate in advance
Reason circuit；
Front end preprocessing circuit: electric parameter information for the input of receiving front-end sensor circuit is simultaneously decayed and filters；
Electric energy acquisition circuit: for gathering the signal of front end preprocessing circuit output, passing ratio calculates and look-up table side
Formula, is converted into electric parameter signal；
Interface circuit: for receiving electric parameter signal, the code conversion of go forward side by side line level and frequency, form embedded processing
The electric energy parameter signals of device module receivable standard incoming level pattern；
Flush bonding processor module: for the signal of interface circuit input, the signal of modulation-demodulation circuit input, fault
The signal that the signal of decision circuit input, number pass the signal of comparator input, picture recognition module inputs, figure pass comparator input
Signal, the signal of radio receiving transmitting module input, the signal of picture signal transport module input processed, and to electric energy acquisition
Circuit inputs control signal, to radio receiving transmitting module input control signal, to modulation-demodulation circuit input data signal, to image
Signal transmission module inputs control signal；
Modulation-demodulation circuit: the signal for inputting flush bonding processor module carries out carrier modulation, sends into wireless receipts
Send out module；Signal for inputting radio receiving transmitting module carries out carrier wave demodulation, changes into digital signal input embedded processing
Device module；
Radio receiving transmitting module: for carrying out after carrier wave amplification, exporting transmitting again the signal after modulation；For by receive
After signal is amplified, inputs modulation-demodulation circuit again and be demodulated；Radio receiving transmitting module is controlled by flush bonding processor module
System, and complete to complete signal to the return operation of flush bonding processor module after wireless transmit is processed；
Low frequency filtering attenuator circuit: for low frequency signal being carried out with harmonic wave and noise filtering, carrying out power attenuation simultaneously
Circuit；
Narrow-band antenna: for launching low-frequency wireless signals；For receiving low-frequency wireless signals；
Low-frequency wireless termination power: in low frequency filtering attenuator circuit Parallel coupled low-frequency wireless signals；
Low frequency detecting circuit: the low-frequency wireless signals for being coupled to low-frequency wireless termination power carry out detection process；
Number passes comparators: the low frequency numerical signal for the signal that inputs low frequency detecting circuit and threshold value memory does ratio
Relatively, by comparative result signal input flush bonding processor module；
Optic Sensors in Power System group: for sensing running voltage value of consult volume and the work of front end sensor circuit and electric energy acquisition circuit
Make current parameter value, then the value of consult volume sensing is sent into fault threshold Comparison Circuit；
Fault threshold Comparison Circuit: value of consult volume and default standard value of consult volume for inputting Optic Sensors in Power System group enter
Row compares, comparison result signal input fault decision circuit；
Fault decision circuit: for the comparison result that fault threshold Comparison Circuit is inputted, make a look up the right of table mode
Should, form fault discriminative information；
Coding circuit: for receiving electric parameter signal, after carrying out transform coding, form the electric energy parameter of typical display mode
Signal, and input display driver circuit；
Display driver circuit: it is driven amplifying for the display pattern electric energy parameter signals after encoding coding circuit,
Input display module is shown；
Display module: for showing the display pattern electric energy parameter signals of front end sensor circuit sensing；
Image capture module: for the image of the display information of acquisition display module；
Picture recognition module: for identifying the letter of the display pattern electric energy parameter in the image that image capture module collects
Number, and the data after identification is entered the code conversion of line level and frequency, form the typical display mode after identification and coding
Electric energy parameter signals, are separately input to picture signal transport module and flush bonding processor module；
Picture signal transport module: for coded image pattern electric energy parameter signals, input after carrying out high frequency carrier modulation
High frequency filter attenuator circuit carries out picture signal transmission；Picture signal transport module is controlled by flush bonding processor module, and
Return operation to flush bonding processor module after completing picture signal transmission process and complete signal；
High frequency filter attenuator circuit: for harmonic wave and noise filtering are carried out to high-frequency signal, simultaneously carry out power attenuation
Circuit；
Broad-band antenna: for launching high-frequency wireless signals；For receiving high-frequency wireless signals；
High frequency wireless coupling circuit: in High frequency filter attenuator circuit Parallel coupled high-frequency wireless signals；
High frequency detecting circuit: the high-frequency wireless signals for being coupled to high frequency wireless coupling circuit carry out detection process；
Figure passes comparator: the high frequency numerical signal for the signal that inputs high frequency detecting circuit and threshold value memory does ratio
Relatively, by comparative result signal input flush bonding processor module；
Threshold value memory: for storing low frequency numerical signal, be input to number biography comparator and be compared；For storing high frequency
Numerical signal, is input to figure biography comparator and is compared.
As preferred, when the signal numerical value of low frequency detecting circuit input is more than or equal to the low frequency numerical value letter of threshold value memory
Number, number passes comparators output high level and represents comparative result signal, shows low frequency signal frequency and power swing, in low frequency signal
The transmitting of wireless signal within the scope of the conditions permit launched by narrow-band antenna, can be carried out；When the input of low frequency detecting circuit
Signal numerical value be less than or equal to threshold value memory low frequency numerical signal, number pass comparator output low level represent comparative result letter
Number, show low frequency signal frequency and power swing, outside the conditions permit scope that low frequency signal is launched by narrow-band antenna, no
The transmitting of wireless signal can be carried out.
As preferred, when the signal numerical value of high frequency detecting circuit input is more than or equal to the high frequency numerical value letter of threshold value memory
Number, figure passes comparator output high level and represents comparative result signal, shows high-frequency signal frequency and power swing, in high-frequency signal
The transmitting of wireless signal within the scope of the conditions permit launched by broad-band antenna, can be carried out；When the input of high frequency detecting circuit
Signal numerical value be less than or equal to threshold value memory high frequency numerical signal, figure pass comparator output low level represent comparative result letter
Number, show high-frequency signal frequency and power swing, outside the conditions permit scope that high-frequency signal is launched by broad-band antenna, no
The transmitting of wireless signal can be carried out.
As preferred, described fault decision circuit: when front end sensor circuit and electric energy acquisition circuit are faulty, then to embedding
Enter formula processor module output fault decision signal, comprise fault discriminative information and fault message；When front end sensor circuit and electricity
Acquisition Circuit can there is no fault, then export fault decision signal to flush bonding processor module, comprise do not have faulty judgement letter
Breath.
The invention has the advantage that the present invention pass through Optic Sensors in Power System group and relevant link circuit to front end sensor circuit and
Electric energy acquisition circuit carries out malfunction monitoring and judgement, and fault decision signal is inputted flush bonding processor module, eliminates electricity
Faults itself hidden danger during parameter collection, is the reliable premise that reliability data provides measuring nose；By level mode electric energy
The carrying out of parameter signals and image model electric energy parameter signals, with the error ratio pair of period, is transmitted when ensureing wireless long-distance meter-reading
Electric parameter numeric data and the concordance of interaction data that shows of local ammeter terminal, have electricity and the number of time mutually confirmation
According to following, eliminate the contradiction and disputes that the technology short slab that meter accuracy and fault occur brings；By low-frequency wireless termination power
With the monitoring that relevant link circuit carries out frequency drift and power swing to low-frequency wireless signals with compare, and known by image
Other module and relevant link circuit electric parameter signal is acquired with identification after input flush bonding processor module pass through high frequency
Wireless coupling circuit and relevant link circuit carry out the monitoring of frequency drift and power swing and compare to high-frequency wireless signals；This
Plant based on comparison technology route while the monitoring of low frequency physical channel power-frequency and high-frequency physical channel power frequency monitoring
Realize, thus completing precisely reliable collection and the measurement of electric parameter information, and electric energy parameter signals are reliably wirelessly transferred, and ensure
Interaction data and customer mobile terminal platform image data information three that wireless long-distance meter-reading information, local ammeter terminal show
The reliability of the transmission of person, the accuracy of the concordance data of communication.
With reference to Figure of description and specific embodiment, the invention will be further described.
Brief description
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is embodiment of the present invention flush bonding processor module synthesis control model workflow diagram.
Specific embodiment
Referring to Fig. 1 and Fig. 2, a kind of intelligent electric meter system based on embedded platform disclosed by the invention, including connecting successively
The front end sensor circuit that connects, front end preprocessing circuit, electric energy acquisition circuit, interface circuit, flush bonding processor module, modulatedemodulate
Adjust circuit, radio receiving transmitting module, low frequency filtering attenuator circuit, narrow-band antenna, low-frequency wireless termination power, low frequency detecting circuit and
Number passes comparator；Front end sensor circuit and electric energy acquisition circuit are connected with Optic Sensors in Power System group, fault threshold comparison electricity in turn
Road, fault decision circuit and flush bonding processor module；Electric energy acquisition circuit is connected with coding circuit in turn, display drives electricity
Road, display module, image capture module, picture recognition module, picture signal transport module, High frequency filter attenuator circuit, broadband
Antenna, high frequency wireless coupling circuit, high frequency detecting circuit and figure pass comparator；Flush bonding processor module is connected to number biography
Comparator, figure pass comparator, radio receiving transmitting module, picture signal transport module and picture recognition module；Number passes comparator and figure
Pass comparator and be connected with threshold value memory.
Front end sensor circuit: for inductive voltage and current and change into electric parameter information input front end preprocessing circuit；
Front end preprocessing circuit: electric parameter information for the input of receiving front-end sensor circuit is simultaneously decayed and filters；
Electric energy acquisition circuit: for gathering the signal of front end preprocessing circuit output, passing ratio calculates and look-up table side
Formula, is converted into electric parameter signal；
Interface circuit: for receiving electric parameter signal, the code conversion of go forward side by side line level and frequency, form embedded processing
The electric energy parameter signals of device module receivable standard incoming level pattern；The receivable standard of flush bonding processor module receives
The electric energy parameter signals of level mode, hereinafter referred to as " level mode electric energy parameter signals "；
Flush bonding processor module: for the signal of interface circuit input, the signal of modulation-demodulation circuit input, fault
The signal that the signal of decision circuit input, number pass the signal of comparator input, picture recognition module inputs, figure pass comparator input
Signal, the signal of radio receiving transmitting module input, the signal of picture signal transport module input processed, and to electric energy acquisition
Circuit inputs control signal, to radio receiving transmitting module input control signal, to modulation-demodulation circuit input data signal, to image
Signal transmission module inputs control signal；
Modulation-demodulation circuit: the signal for inputting flush bonding processor module carries out carrier modulation, sends into wireless receipts
Send out module；Signal for inputting radio receiving transmitting module carries out carrier wave demodulation, changes into digital signal input embedded processing
Device module；
Radio receiving transmitting module: for carrying out after carrier wave amplification, exporting transmitting again the signal after modulation；For by receive
After signal is amplified, inputs modulation-demodulation circuit again and be demodulated；Radio receiving transmitting module is controlled by flush bonding processor module
System, and complete to complete signal to the return operation of flush bonding processor module after wireless transmit is processed；
Low frequency filtering attenuator circuit: for low frequency signal being carried out with harmonic wave and noise filtering, carrying out power attenuation simultaneously
Circuit；
Narrow-band antenna: for launching low-frequency wireless signals；For receiving low-frequency wireless signals；
Low-frequency wireless termination power: in low frequency filtering attenuator circuit Parallel coupled low-frequency wireless signals；
Low frequency detecting circuit: the low-frequency wireless signals for being coupled to low-frequency wireless termination power carry out detection process；
Number passes comparators: the low frequency numerical signal for the signal that inputs low frequency detecting circuit and threshold value memory does ratio
Relatively, by comparative result signal input flush bonding processor module；
Optic Sensors in Power System group: for sensing running voltage value of consult volume and the work of front end sensor circuit and electric energy acquisition circuit
Make current parameter value, then the value of consult volume sensing is sent into fault threshold Comparison Circuit；
Fault threshold Comparison Circuit: value of consult volume and default standard value of consult volume for inputting Optic Sensors in Power System group enter
Row compares, comparison result signal input fault decision circuit；
Fault decision circuit: for the comparison result that fault threshold Comparison Circuit is inputted, make a look up the right of table mode
Should, form fault discriminative information；
Coding circuit: for receiving electric parameter signal, after carrying out transform coding, form the electric energy parameter of typical display mode
Signal, hereinafter referred to as " display pattern electric energy parameter signals ", and input display driver circuit；
Display driver circuit: it is driven amplifying for the display pattern electric energy parameter signals after encoding coding circuit,
Input display module is shown；
Display module: for showing the display pattern electric energy parameter signals of front end sensor circuit sensing；
Image capture module: for the image of the display information of acquisition display module；
Picture recognition module: for identifying the letter of the display pattern electric energy parameter in the image that image capture module collects
Number, and the data after identification is entered the code conversion of line level and frequency, form the typical display mode after identification and coding
Electric energy parameter signals, hereinafter referred to as " image model electric energy parameter signals ", are separately input to picture signal transport module and embedding
Enter formula processor module；
Picture signal transport module: for coded image pattern electric energy parameter signals, input after carrying out high frequency carrier modulation
High frequency filter attenuator circuit carries out picture signal transmission；Picture signal transport module is controlled by flush bonding processor module, and
Return operation to flush bonding processor module after completing picture signal transmission process and complete signal；
High frequency filter attenuator circuit: for harmonic wave and noise filtering are carried out to high-frequency signal, simultaneously carry out power attenuation
Circuit；
Broad-band antenna: for launching high-frequency wireless signals；For receiving high-frequency wireless signals；
High frequency wireless coupling circuit: in High frequency filter attenuator circuit Parallel coupled high-frequency wireless signals；
High frequency detecting circuit: the high-frequency wireless signals for being coupled to high frequency wireless coupling circuit carry out detection process；
Figure passes comparator: the high frequency numerical signal for the signal that inputs high frequency detecting circuit and threshold value memory does ratio
Relatively, by comparative result signal input flush bonding processor module；
Threshold value memory: for storing low frequency numerical signal, be input to number biography comparator and be compared；For storing high frequency
Numerical signal, is input to figure biography comparator and is compared.
As preferred, when the signal numerical value of low frequency detecting circuit input is more than or equal to the low frequency numerical value letter of threshold value memory
Number, number passes comparators output high level and represents comparative result signal, shows low frequency signal frequency and power swing, in low frequency signal
The transmitting of wireless signal within the scope of the conditions permit launched by narrow-band antenna, can be carried out；When the input of low frequency detecting circuit
Signal numerical value be less than or equal to threshold value memory low frequency numerical signal, number pass comparator output low level represent comparative result letter
Number, show low frequency signal frequency and power swing, outside the conditions permit scope that low frequency signal is launched by narrow-band antenna, no
The transmitting of wireless signal can be carried out.
As preferred, when the signal numerical value of high frequency detecting circuit input is more than or equal to the high frequency numerical value letter of threshold value memory
Number, figure passes comparator output high level and represents comparative result signal, shows high-frequency signal frequency and power swing, in high-frequency signal
The transmitting of wireless signal within the scope of the conditions permit launched by broad-band antenna, can be carried out；When the input of high frequency detecting circuit
Signal numerical value be less than or equal to threshold value memory high frequency numerical signal, figure pass comparator output low level represent comparative result letter
Number, show high-frequency signal frequency and power swing, outside the conditions permit scope that high-frequency signal is launched by broad-band antenna, no
The transmitting of wireless signal can be carried out.
As preferred, described fault decision circuit: when front end sensor circuit and electric energy acquisition circuit are faulty, then to embedding
Enter formula processor module output fault decision signal, comprise fault discriminative information and fault message；When front end sensor circuit and electricity
Acquisition Circuit can there is no fault, then export fault decision signal to flush bonding processor module, comprise do not have faulty judgement letter
Breath.
The present invention is entered to front end sensor circuit and electric energy acquisition circuit by Optic Sensors in Power System group and relevant link circuit
Row malfunction monitoring and judgement, and fault decision signal is inputted flush bonding processor module；By low-frequency wireless termination power and
Relevant link circuit carries out the monitoring of frequency drift and power swing and compares to low-frequency wireless signals, and comparison result information
Input flush bonding processor module；After picture recognition module and relevant link circuit are acquired identification to electric parameter signal
Input flush bonding processor module, and by high frequency wireless coupling circuit and relevant link circuit, high-frequency wireless signals are carried out
The monitoring of frequency drift and power swing with compare, and comparison result information input flush bonding processor module；Finally by embedding
Enter formula processor module wireless to fault decision signal, the frequency frequency drift of low-frequency wireless signals and power swing information, high frequency
The entering of the frequency frequency drift of signal and power swing information, level mode electric energy parameter signals and image model electric energy parameter signals
Row integrated treatment, backward radio receiving transmitting module and picture signal transport module input control signal, thus complete electric parameter letter
The precisely reliable of breath gathers and measurement, and electric energy parameter signals are reliably wirelessly transferred.
On the basis of based on flush bonding processor modular platform, whole working method can be divided into: (1) stand-by operation side
Formula, (2) electric parameter collecting work mode, (3) fault adjudicates working method, (4) low frequencies working method, (5) image acquisition
Identification transmitting working method, (6) flush bonding processor module synthesis control working method.
(1) stand-by operation mode
Low-frequency wireless signals are received by narrow-band antenna, is input to low frequency filtering attenuator circuit, then low frequency signal is carried out
Harmonic wave and noise filtering, carry out power attenuation process, radio receiving transmitting module is obtaining the control of flush bonding processor module simultaneously
After instruction, after the signal of reception is amplified, inputs modulation-demodulation circuit again and carry out carrier wave demodulation, change into digital signal defeated
Enter flush bonding processor module.
(2) electric parameter collecting work mode
Front end sensor circuit inductive voltage and current simultaneously changes into electric parameter information input front end preprocessing circuit, afterwards
Electric energy acquisition circuit is inputted, electric energy acquisition circuit passing ratio calculates and look-up table mode, by electricity ginseng after being decayed and filtering
Amount information is converted into electric energy parameter signals, sends into interface circuit and enters line level and frequency conversion, forms flush bonding processor module
The electric energy parameter signals of receivable standard incoming level pattern, i.e. level mode electric energy parameter signals, input embedded processing
Device module.
(3) fault judgement working method
Optic Sensors in Power System group senses front end sensor circuit and the running voltage value of consult volume of electric energy acquisition circuit and work is electric
Stream value of consult volume, then the value of consult volume sensing feeding fault threshold Comparison Circuit is compared with default standard value of consult volume, than
To consequential signal input fault decision circuit.The comparison result that fault decision circuit inputs to fault threshold Comparison Circuit, is carried out
The correspondence of look-up table mode, forms fault discriminative information.If front end sensor circuit and electric energy acquisition circuit are faulty, to embedding
Enter formula processor module output fault decision signal, comprise fault discriminative information and fault message；If front end sensor circuit and
Electric energy acquisition circuit does not have fault, then export fault decision signal to flush bonding processor module, comprise do not have faulty judgement
Information.
(4) low frequencies working method
On the basis of " electric parameter drainage pattern ", the signal that flush bonding processor module inputs is entered by modulation-demodulation circuit
Row carrier modulation, sends into radio receiving transmitting module.Radio receiving transmitting module, will after the control instruction obtaining flush bonding processor module
After signal after modulation-demodulation circuit modulation carries out carrier wave amplification, it is input to low frequency filtering attenuator circuit again.Radio receiving transmitting module
Complete to complete signal to the return operation of flush bonding processor module after wireless transmit is processed.Low frequency filtering attenuator circuit is to low frequency
Signal carries out harmonic wave and noise filtering, carries out power attenuation process simultaneously, recently enters narrow-band antenna and is launched.
Meanwhile, low-frequency wireless termination power is in low frequency filtering attenuator circuit Parallel coupled low-frequency wireless signals, and inputs low
Frequency detecting circuit carries out detection process, is input to number afterwards and passes comparator.Number passes the letter that low frequency detecting circuit is inputted by comparator
Number and the low frequency numerical signal of threshold value memory compare, by comparative result signal input flush bonding processor module.If low
The signal numerical value of frequency detecting circuit input is more than or equal to the low frequency numerical signal of threshold value memory, and number passes comparator output high level
Represent comparative result signal, show low frequency signal frequency and power swing, the condition launched by narrow-band antenna in low frequency signal
The transmitting of wireless signal within allowed band, can be carried out；If the signal numerical value of low frequency detecting circuit input is less than or equal to threshold
The low frequency numerical signal of value memorizer, number passes comparator output low level and represents comparative result signal, shows low frequency signal frequency
With power swing, outside the conditions permit scope that low frequency signal is launched by narrow-band antenna it is impossible to carry out wireless signal send out
Penetrate.
(5) image acquisition identification transmitting working method
On the basis of " electric parameter drainage pattern ", coding circuit receives electric parameter signal, after carrying out transform coding, is formed
Display pattern electric energy parameter signals and through display driver circuit be driven amplify after input display module shown.Figure
As the image of the display information of acquisition module acquisition display module, and by image input picture identification module to image capture module
Display pattern electric energy parameter signals in the image collecting are identified, and the data after identification is entered line level and frequency
Code conversion, forms image model electric energy parameter signals, is separately input to picture signal transport module and flush bonding processor mould
Block.
Picture signal transport module is controlled by flush bonding processor module, and image model electric energy parameter signals are compiled
Code, then input High frequency filter attenuator circuit carries out picture signal transmission after carrying out high frequency carrier modulation, and complete picture signal
Return operation to flush bonding processor module after transmission process and complete signal.High frequency filter attenuator circuit carries out humorous to high-frequency signal
Ripple and noise filtering, carry out power attenuation process simultaneously, recently enter broad-band antenna and launched.
Meanwhile, high frequency wireless coupling circuit is in High frequency filter attenuator circuit Parallel coupled high-frequency wireless signals, and inputs height
Frequency detecting circuit carries out detection process, is input to figure afterwards and passes comparator.Figure passes the letter that high frequency detecting circuit is inputted by comparator
Number and the high frequency numerical signal of threshold value memory compare, by comparative result signal input flush bonding processor module.If high
The signal numerical value of frequency detecting circuit input is more than or equal to the high frequency numerical signal of threshold value memory, and figure passes comparator output high level
Represent comparative result signal, show high-frequency signal frequency and power swing, the condition launched by broad-band antenna in high-frequency signal
The transmitting of wireless signal within allowed band, can be carried out；If the signal numerical value of high frequency detecting circuit input is less than or equal to threshold
The high frequency numerical signal of value memorizer, figure passes comparator output low level and represents comparative result signal, shows high-frequency signal frequency
With power swing, outside the conditions permit scope that high-frequency signal is launched by broad-band antenna it is impossible to carry out wireless signal send out
Penetrate.
(6) flush bonding processor module synthesis control working method
See Fig. 2, flush bonding processor module synthesis control model workflow diagram；
1st step, detects the acquisition instructions of low-frequency wireless signals when flush bonding processor module stand-by operation mode works, if
It is not received by acquisition instructions, then repeat the 1st step；If receiving acquisition instructions, enter the 2nd step.
2nd step, flush bonding processor module receives acquisition instructions, then carry out the collecting work of electric energy parameter signals, to
Electric energy acquisition circuit sends electric parameter acquisition instructions, starts electric parameter collecting work mode and fault judgement working method, completes
Enter the 3rd step afterwards.
3rd step, flush bonding processor module detects fault decision signal, if faulty, sends fault alarm information,
And return to the 1st step；If fault-free, enter the 4th step.
4th step, detects level mode electric energy parameter signals, without signal, then repeats the 4th step；If there are signal, then
Enter the 5th step.
5th step, incoming level pattern electric energy parameter signals, after the completion of enter the 6th step.
6th step, detection image pattern electric energy parameter signals, without signal, then repeat the 6th step；If there are signal, then
Enter the 7th.
7th step, receive image model electric energy parameter signals, after the completion of enter the 8th step.
8th step, send stop electric parameter acquisition instructions, after the completion of enter the 9th step.
9th step, whether the numerical value corresponding to comparison level mode electric energy parameter signals and image model electric energy parameter signals
In range of error, if not in range of error, then return to the 2nd step；If in range of error, then enter the 10th
Step and the 13rd step.
10th step, detection number passes comparator comparative result signal, if low level, then repeats the 10th step；If high
Level, then enter the 11st step.
11st step, controls radio receiving transmitting module to open low frequency signal transmitting, that is, starts low frequencies mode of operation, after the completion of
Enter the 12nd step.
12nd step, whether detection radio receiving transmitting module sends operation completes signal, if being not detected by operation to complete signal,
Then repeat the 12nd step；If operation is detected to complete signal, enter the 16th step.
13rd step, detection figure passes comparator comparative result signal, if low level, then repeats the 13rd step；If high
Level, then enter the 14th step.
14th step, controls image signal transmission module to open high-frequency signal transmitting, that is, start image acquisition identification transmitting work
Make mode, after the completion of enter the 15th step.
15th step, whether detection image signal transmission module sends operation and completes signal, if be not detected by operation completed
Signal, then repeat the 15th step；If operation is detected to complete signal, enter the 16th step.
Whether the 16th step, detection radio receiving transmitting module and picture signal transport module all send operation and complete signal, such as
Fruit is not detected by all sending operation and completes signal, then repeat the 16th step；If whole transmission operations is detected to complete signal,
Return the 1st step.
The specific descriptions to the present invention for the above-described embodiment, are served only for the present invention being further described it is impossible to be interpreted as
Limiting the scope of the present invention, it is non-that the technician of this area makes some according to the content of foregoing invention to the present invention
The improvement of essence and adjustment each fall within protection scope of the present invention.
Claims (5)
1. a kind of intelligent electric meter system based on embedded platform it is characterised in that: include be sequentially connected front end sensor circuit,
Front end preprocessing circuit, electric energy acquisition circuit, interface circuit, flush bonding processor module, modulation-demodulation circuit, wireless receiving and dispatching mould
Block, low frequency filtering attenuator circuit, narrow-band antenna, low-frequency wireless termination power, low frequency detecting circuit sum pass comparator；Front end is felt
Answer circuit and electric energy acquisition circuit be connected with turn Optic Sensors in Power System group, fault threshold Comparison Circuit, fault decision circuit and
Flush bonding processor module；Electric energy acquisition circuit is connected with coding circuit in turn, display driver circuit, display module, image are adopted
Collection module, picture recognition module, picture signal transport module, High frequency filter attenuator circuit, broad-band antenna, high frequency wireless coupling electricity
Road, high frequency detecting circuit and figure pass comparator；Flush bonding processor module is connected to number biography comparator, figure passes comparator,
Radio receiving transmitting module, picture signal transport module and picture recognition module；Number passes comparator and figure passes comparator and is connected with threshold value
Memorizer.
2. a kind of intelligent electric meter system based on embedded platform according to claim 1 it is characterised in that: described front end
Sensor circuit: for inductive voltage and current and change into electric parameter information input front end preprocessing circuit；
Front end preprocessing circuit: electric parameter information for the input of receiving front-end sensor circuit is simultaneously decayed and filters；
Electric energy acquisition circuit: for gathering the signal of front end preprocessing circuit output, passing ratio calculates and look-up table mode, turns
Change electric parameter signal into；
Interface circuit: for receiving electric parameter signal, the code conversion of go forward side by side line level and frequency, form flush bonding processor mould
The electric energy parameter signals of block receivable standard incoming level pattern；
Flush bonding processor module: for the signal of interface circuit input, the signal of modulation-demodulation circuit input, fault judgement
The signal of circuit input, the signal of number biography comparator input, the signal of picture recognition module input, figure pass the letter that comparator inputs
Number, the signal of radio receiving transmitting module input, the signal of picture signal transport module input processed, and to electric energy acquisition circuit
Input control signal, input control signal to radio receiving transmitting module, to modulation-demodulation circuit input data signal, to picture signal
Transport module inputs control signal；
Modulation-demodulation circuit: the signal for inputting flush bonding processor module carries out carrier modulation, sends into wireless receiving and dispatching mould
Block；Signal for inputting radio receiving transmitting module carries out carrier wave demodulation, changes into digital signal input flush bonding processor mould
Block；
Radio receiving transmitting module: for carrying out after carrier wave amplification, exporting transmitting again the signal after modulation；For the signal that will receive
After being amplified, input modulation-demodulation circuit again and be demodulated；Radio receiving transmitting module is controlled by flush bonding processor module, and
Complete to complete signal to the return operation of flush bonding processor module after wireless transmit is processed；
Low frequency filtering attenuator circuit: for low frequency signal being carried out with harmonic wave and noise filtering, carrying out the circuit of power attenuation simultaneously；
Narrow-band antenna: for launching low-frequency wireless signals；For receiving low-frequency wireless signals；
Low-frequency wireless termination power: in low frequency filtering attenuator circuit Parallel coupled low-frequency wireless signals；
Low frequency detecting circuit: the low-frequency wireless signals for being coupled to low-frequency wireless termination power carry out detection process；
Number passes comparators: the low frequency numerical signal for the signal that inputs low frequency detecting circuit and threshold value memory compares,
By comparative result signal input flush bonding processor module；
Optic Sensors in Power System group: for sensing running voltage value of consult volume and the work electricity of front end sensor circuit and electric energy acquisition circuit
Stream value of consult volume, then the value of consult volume sensing is sent into fault threshold Comparison Circuit；
Fault threshold Comparison Circuit: value of consult volume and default standard value of consult volume for inputting Optic Sensors in Power System group are compared
Right, comparison result signal input fault decision circuit；
Fault decision circuit: for the comparison result that fault threshold Comparison Circuit is inputted, make a look up the correspondence of table mode, shape
Become fault discriminative information；
Coding circuit: for receiving electric parameter signal, after carrying out transform coding, form the electric energy parameter letter of typical display mode
Number, and input display driver circuit；
Display driver circuit: be driven amplifying for the display pattern electric energy parameter signals after encoding coding circuit, input
Display module is shown；
Display module: for showing the display pattern electric energy parameter signals of front end sensor circuit sensing；
Image capture module: for the image of the display information of acquisition display module；
Picture recognition module: for identifying the display pattern electric energy parameter signals in the image that image capture module collects, and
Data after identification is entered the code conversion of line level and frequency, form the electric energy ginseng of the typical display mode after identification and coding
Amount signal, is separately input to picture signal transport module and flush bonding processor module；
Picture signal transport module: for coded image pattern electric energy parameter signals, input high frequency after carrying out high frequency carrier modulation
Algorithm circuit carries out picture signal transmission；Picture signal transport module is controlled by flush bonding processor module, and complete
Return operation to flush bonding processor module after becoming picture signal transmission process and complete signal；
High frequency filter attenuator circuit: for harmonic wave and noise filtering are carried out to high-frequency signal, simultaneously carry out the circuit of power attenuation；
Broad-band antenna: for launching high-frequency wireless signals；For receiving high-frequency wireless signals；
High frequency wireless coupling circuit: in High frequency filter attenuator circuit Parallel coupled high-frequency wireless signals；
High frequency detecting circuit: the high-frequency wireless signals for being coupled to high frequency wireless coupling circuit carry out detection process；
Figure passes comparator: the high frequency numerical signal for the signal that inputs high frequency detecting circuit and threshold value memory compares,
By comparative result signal input flush bonding processor module；
Threshold value memory: for storing low frequency numerical signal, be input to number biography comparator and be compared；For storing high frequency numerical value
Signal, is input to figure biography comparator and is compared.
3. a kind of intelligent electric meter system based on embedded platform according to claim 2 it is characterised in that: when low frequency inspection
The signal numerical value of wave circuit input is more than or equal to the low frequency numerical signal of threshold value memory, and number passes comparator output high level and represents
Comparative result signal, shows low frequency signal frequency and power swing, the conditions permit launched in low frequency signal by narrow-band antenna
Within the scope of, the transmitting of wireless signal can be carried out；Store when the signal numerical value of low frequency detecting circuit input is less than or equal to threshold value
The low frequency numerical signal of device, number passes comparator output low level and represents comparative result signal, shows low frequency signal frequency and power
Fluctuation, outside the conditions permit scope that low frequency signal is launched by narrow-band antenna it is impossible to carry out the transmitting of wireless signal.
4. a kind of intelligent electric meter system based on embedded platform according to claim 3 it is characterised in that: when high frequency inspection
The signal numerical value of wave circuit input is more than or equal to the high frequency numerical signal of threshold value memory, and figure passes comparator output high level and represents
Comparative result signal, shows high-frequency signal frequency and power swing, the conditions permit launched in high-frequency signal by broad-band antenna
Within the scope of, the transmitting of wireless signal can be carried out；Store when the signal numerical value of high frequency detecting circuit input is less than or equal to threshold value
The high frequency numerical signal of device, figure passes comparator output low level and represents comparative result signal, shows high-frequency signal frequency and power
Fluctuation, outside the conditions permit scope that high-frequency signal is launched by broad-band antenna it is impossible to carry out the transmitting of wireless signal.
5. a kind of intelligent electric meter system based on embedded platform according to claim 4 it is characterised in that: described fault
Decision circuit: when front end sensor circuit and electric energy acquisition circuit are faulty, then to the output fault judgement of flush bonding processor module
Signal, comprises fault discriminative information and fault message；When front end sensor circuit and electric energy acquisition circuit do not have fault, then to embedded
Formula processor module exports fault decision signal, comprises do not have faulty discriminative information.
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| CN201610797749.2A CN106338709A (en) | 2016-08-31 | 2016-08-31 | Intelligent meter system based on embedded platform |
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Application publication date: 20170118 |