CN201749151U - Miniature digital electric meter - Google Patents
Miniature digital electric meter Download PDFInfo
- Publication number
- CN201749151U CN201749151U CN201020219779.3U CN201020219779U CN201749151U CN 201749151 U CN201749151 U CN 201749151U CN 201020219779 U CN201020219779 U CN 201020219779U CN 201749151 U CN201749151 U CN 201749151U
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- power
- power supply
- supply changeover
- changeover device
- output terminal
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- Expired - Fee Related
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Abstract
The utility model relates to a miniature digital electric meter, which includes a microprocessor, a power converter, an instantaneous power enhancement unit, a relay unit and an electronic switch, wherein the microprocessor receives control orders through a connecting port; the power converter obtains electric power through a power line, carries out conversion and outputs a main power source; the power of the main power source is enhanced by the instantaneous power enhancement unit and then used for driving the relay unit; and the electronic switch is electrically connected with the power converter, the instantaneous power enhancement unit and the relay unit to form a loop, and is controlled to open and close by the microprocessor according to received control orders, and then the opening and closing of the relay unit can be controlled. Therefore, the digital electric meter provided by the utility model can adopt the power converter with smaller output power, and the whole volume of the digital electric meter can be reduced.
Description
Technical field
The utility model relates to a kind of digital electric meter, relates in particular to a kind of miniaturization digital electric meter.
Background technology
For making things convenient for Utilities Electric Co. to calculate user's power consumption, general household or company all are equipped with ammeter, and this ammeter is installed between electric power supply end and the user side, calculate power consumption with the conversion electricity charge according to the electricity consumption situation of user side.
Except traditional mechanical type ammeter, in recent years because of the development of technology, digital electric meter also comes out, and after the ammeter digitizing, the function that also provides far-end to check meter and control, wherein the far-end function of checking meter allows the personnel of Utilities Electric Co. copy the power consumption that data can be learnt the user to the user place, and the function of far-end control then makes Utilities Electric Co. not pay the fees or during the desire construction, utilize the far-end control function to cut off electric power earlier in the user.
Be existingly to have that far-end is checked meter and the digital electric meter of control function as shown in Figure 5, it comprises microprocessor (91), power supply changeover device (92), relay unit (93), electronic switch (94) and connectivity port (95), wherein: this microprocessor (91) connects line of electric force L1, L2 detecting electric current and voltage, and is current data and voltage data with electric current on line of electric force L1, the L2 and voltage transitions; This power supply changeover device (92) connects line of electric force L1, L2 obtaining AC power, and exports after the AC power that obtains is converted to relay driving power and network connectivity device driving power; This relay unit (93) is electrically connected this power supply changeover device (92), and drives running by this relay driving power; This electronic switch (94) is electrically connected with this power supply changeover device (92) and this relay unit (93) and constitutes a loop, and this electronic switch (94) is electrically connected with this microprocessor (91) again, is controlled the keying of this electronic switch (94) by this microprocessor (91); This connectivity port (95) connects this microprocessor (91) and this power supply changeover device (92), therefore, this power supply changeover device (92) can transfer to network connectivity device (96) with this network connectivity device driving power by this connectivity port (95), to drive this network connectivity device (96) work, this microprocessor (91) then can be sent to network connectivity device (96) by this connectivity port (95) with current data and voltage data, be resent to the servomechanism (not shown) of Utilities Electric Co. by this network connectivity device (96), to reach the function that far-end is checked meter; Again or can send control command by the servomechanism of Utilities Electric Co., reach this microprocessor (91) via this network connectivity device (96) and connectivity port (95), make this microprocessor (91) control the keying of this relay unit (93) according to this control command, for example this relay unit (93) is in closed condition usually, make between electric power supply end and the user side and be connection state, make normally electricity consumption of user side, when the line between desire cut-out electric power supply end and the user side, then can send control command by the servomechanism of Utilities Electric Co. and give this microprocessor (91), control this relay unit (93) by this microprocessor (91) according to this control command and open, make to be the broken string state between electric power supply end and the user side; So can reach the function of far-end control user side electric power.
Yet, need bigger electric current for driving this relay unit (93) running, generally speaking this relay unit (93) running peak power that will consume is 24 watts, therefore, the output power of this power supply changeover device (92) must minimumly reach 24 watts; Moreover if also will consider output network Wiring device driving power to drive this network connectivity device (96), generally speaking required peak power is 3 watts, and then the output power of this power supply changeover device (92) must minimumly reach 27 watts.
Yet the power supply changeover device that power is high more (92), often its volume is also big more, so will cause the volume of digital electric meter excessive, for the assembling of digital electric meter in manufacture process, and even follow-up when user place carries out the installation of digital electric meter, as all can cause the waste in space and assembling, to install difficulty.
The utility model content
Existingly have that far-end is checked meter and the excessive problem of digital electric meter volume of control function for solving, fundamental purpose of the present utility model is providing a kind of digital electric meter, it is checked meter but also has under the prerequisite of digital electric meter identical function of control function still providing with not only having far-end, has littler volume.
For reaching the major technique means that aforementioned purpose takes is to make aforementioned miniaturization digital electric meter comprise:
With electric current and voltage transitions is the microprocessor of current data and voltage data, connects line of electric force;
The connectivity port of sending this current data and voltage data and receiving control command is electrically connected this microprocessor;
AC power is converted to the power supply changeover device of primary power, has input end and main output terminal, wherein this input end connects line of electric force, and should export primary power by main output terminal;
The power that improves primary power is the instantaneous power lift unit of relay driving power, is electrically connected the main output terminal of this power supply changeover device;
Relay unit is series on the line of electric force, and is electrically connected this instantaneous power lift unit;
According to the electronic switch that control command opens and closes, be electrically connected with main output terminal, instantaneous power lift unit and this relay unit of this power supply changeover device and constitute a loop, this electronic switch is electrically connected with this microprocessor again.
Utilize above-mentioned technological means, because this instantaneous power lift unit can improve the primary power that power supply changeover device is exported, therefore, this digital ammeter needn't use the power supply changeover device of high-output power, still can reach the driving relay unit, so that the far-end control function identical as existing digital electric meter to be provided, and the volume of the lower power supply changeover device of output power, the power supply changeover device of inevitable higher output power is little, thereby can reach the effect of digital electric meter miniaturization.
Description of drawings
Fig. 1 is the circuit diagram of the utility model first embodiment.
Fig. 2 is the circuit diagram of the utility model second embodiment.
Fig. 3 is the circuit diagram of the utility model the 3rd embodiment.
Fig. 4 is the circuit diagram of the utility model the 4th embodiment.
Fig. 5 is the circuit diagram of existing digital electric meter.
Embodiment
About first embodiment of the present utility model, see also shown in Figure 1ly, comprise microprocessor (10), connectivity port (20), power supply changeover device (30), instantaneous power lift unit (40), relay unit (50) and electronic switch (60).
Above-mentioned microprocessor (10) connects line of electric force L1, L2 with the electric current and the voltage that detect line of electric force and be converted into current data and voltage data.
Above-mentioned connectivity port (20) is electrically connected this microprocessor (10), be electrically connected with network connectivity device (70) by this connectivity port (20) for this microprocessor (10), this current data and voltage data are sent to this network connectivity device (70), be sent to the servomechanism (not shown) of Utilities Electric Co. more again by this network connectivity device (70), to reach the function that far-end is checked meter; Or make this microprocessor (10) receive the control command that transmits through this network connectivity device (70) by Utilities Electric Co.'s servomechanism by this connectivity port (20), to reach the function of far-end control.
In the present embodiment, above-mentioned power supply changeover device (30) is flyback power converter (FlybackConverter), and it has:
Input end (31) connects line of electric force L1, L2 to obtain AC power, by this power supply changeover device (30) AC power that obtains is converted to primary power; And
Main output terminal (32) is for this primary power of output.
Above-mentioned instantaneous power lift unit (40) is electrically connected the main output terminal (32) of this power supply changeover device (30) to obtain this primary power, again by the power raising back output relay driving power of this instantaneous power lift unit (40) with this primary power; In the present embodiment, this instantaneous power lift unit (40) comprises diode (D), resistance (R) and storage capacitor (C), wherein the anode of this diode (D) connects the main output terminal (32) of this power supply changeover device (30), one end of this resistance (R) connects the negative electrode of this diode (D), and this electric capacity (C) then is connected in connected node with the other end of this resistance (R).
Above-mentioned relay unit (50) supplies to be series on line of electric force L1, the L2, and is electrically connected this instantaneous power lift unit (40), and drives running by this relay driving power; In the present embodiment, an end of this relay unit (50) connects the connected node of this electric capacity (C) and this resistance (R).
Above-mentioned electronic switch (60) is electrically connected with main output terminal (32), instantaneous power lift unit (40) and this relay unit (50) of this power supply changeover device (30) and constitutes a loop, this electronic switch (60) is electrically connected with this microprocessor (10) again, comply with the keying that the control command that is received is controlled this electronic switch (60) by this microprocessor (10), and then control the running of this relay unit (50); In the present embodiment, this electronic switch (60) connects the other end of this relay unit (50); In addition, the effect that this instantaneous power lift unit (40) is set is, because of relay unit (50) does not need to operate often, but in case will drive relay unit (50) running, just need powerful energy of moment, so notion of the present invention promptly is by the power ascension of this instantaneous power lift unit (40) with primary power, promote the mode of the power of primary power as for this instantaneous power lift unit (40) of control, then be in the present embodiment when relay unit (50) needn't operate, by the primary power of this main output terminal (32) output to this electric capacity (C) storage power, so when needs drive relay unit (50), the power of the stored energy of this electric capacity (C) cooperates the instantaneous power of primary power can be promoted to the instantaneous power size that is enough to drive relay unit (50), and reaches the effect that improves power.
Therefore, this digital ammeter can use the lower power supply changeover device of output power (30), especially if what use is that this class of flyback power converter is when containing the isolated power supply changeover device of transformer, because of the winding line of the high more then transformer of its output power footpath big more, otherwise it is then more little, so the volume of the flyback power converter that output power is lower will be more little, thereby can make the volume miniaturization of this digital ammeter.
For allowing digital electric meter of the present utility model can directly provide the running of this network connectivity device (70) required working power, thus have following of the present utility model second and third, the design of four embodiment.
See also shown in Figure 2, second embodiment and aforementioned first embodiment are roughly the same, difference is, this power supply changeover device (30) further comprises secondary output terminal (33), and this power supply changeover device (30) can further be converted to auxiliary power with the AC power that obtains, and export this auxiliary power by this pair output terminal (33), should connect this connectivity port (20) by pair output terminal (33) again, to send this auxiliary power to this network connectivity device (70) by this connectivity port (20), thus, this network connectivity device (70) can be powered by this digital ammeter, and needn't external extra power supply.
See also shown in Figure 3, the 3rd embodiment of the present utility model and aforementioned first embodiment are roughly the same, difference is, digital electric meter of the present utility model further comprises the buck power supply changeover device (80) that integrated circuit (IC) is changed, this buck power supply changeover device (80) is connected between the main output terminal (32) of this connectivity port (20) and this power supply changeover device (30), after being auxiliary power with primary power step-down, send this auxiliary power to this network connectivity device (70) by this connectivity port (20) with main output terminal (32) output.Because of this buck power supply changeover device (80) ICization, thus set up the volume of unlikely excessive this digital ammeter of increase of this buck power supply changeover device (80), and this network connectivity device (70) can be by this digital ammeter power supply, and needn't external extra power supply.
See also shown in Figure 4ly, the 4th embodiment of the present utility model and aforementioned first embodiment are roughly the same, and difference is:
The main output terminal (32) of this power supply changeover device (30) further connects this connectivity port (20), to send this primary power to this network connectivity device (70) by this connectivity port (20);
This instantaneous power lift unit (40) further comprises the boost type power supply changeover device (41) of ICization, this boost type power supply changeover device (41) is connected between the anode of the main output terminal (32) of this power supply changeover device (30) and this diode (D), transmits to this diode (D) with the back of boosting of the primary power with main output terminal (32) output.Because of this boost type power supply changeover device (41) ICization, thus set up the volume of unlikely excessive this digital ammeter of increase of this boost type power supply changeover device (41), and this network connectivity device (70) can be by this digital ammeter power supply, and needn't external extra power supply.
Though the utility model discloses in previous embodiment, be not limited in category mentioned in the previous embodiment, any variation and the modification done in not breaking away from spirit and scope of the present utility model all belong to protection domain of the present utility model.
In sum, the utility model is real in to have the fine piece of writing of progressive and practicality, and does not see publication or public use, meets the application important document of novel patent, so file an application in accordance with the law.
Claims (5)
1. miniaturization digital electric meter comprises:
With electric current and voltage transitions is the microprocessor of current data and voltage data, connects line of electric force;
The connectivity port of sending described current data and voltage data and receiving control command is electrically connected described microprocessor;
AC power is converted to the power supply changeover device of primary power, has input end and main output terminal, wherein said input end connects line of electric force, and described main output terminal output primary power;
The power that improves primary power is the instantaneous power lift unit of relay driving power, is electrically connected the main output terminal of described power supply changeover device;
Relay unit is series on the line of electric force, and is electrically connected described instantaneous power lift unit;
According to the electronic switch that control command opens and closes, be electrically connected with main output terminal, instantaneous power lift unit and the described relay unit of described power supply changeover device and constitute a loop, described again electronic switch is electrically connected with described microprocessor.
2. miniaturization digital electric meter as claimed in claim 1, described instantaneous power lift unit comprises diode, resistance and storage capacitor, wherein, the anode of described diode connects the main output terminal of described power supply changeover device, one end of described resistance connects the negative electrode of described diode, described electric capacity then is connected in connected node with the other end of described resistance, and an end of described relay unit connects the connected node of described electric capacity and described resistance, and the other end of described relay unit then connects the described electronic switch other end and then connects this electronic switch.
3. miniaturization digital electric meter as claimed in claim 1 or 2, described power supply changeover device further comprise output through described power supply changeover device from exchanging power source conversion the secondary output terminal of auxiliary power, connect described connectivity port.
4. miniaturization digital electric meter as claimed in claim 1 or 2 further comprises with the primary power step-down being the buck power supply changeover device of auxiliary power, and described buck power supply changeover device is connected between the main output terminal of described connectivity port and described power supply changeover device.
5. miniaturization digital electric meter as claimed in claim 2, wherein:
The main output terminal of described power supply changeover device further connects described connectivity port;
Described instantaneous power lift unit further comprises the boost type power supply changeover device that primary power is boosted, and described boost type power supply changeover device is connected between the anode of the main output terminal of described power supply changeover device and described diode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW099209468U TWM398119U (en) | 2010-05-20 | 2010-05-20 | Miniaturized digital electric meter |
| CN201020219779.3U CN201749151U (en) | 2010-05-20 | 2010-05-28 | Miniature digital electric meter |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW099209468U TWM398119U (en) | 2010-05-20 | 2010-05-20 | Miniaturized digital electric meter |
| CN201020219779.3U CN201749151U (en) | 2010-05-20 | 2010-05-28 | Miniature digital electric meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201749151U true CN201749151U (en) | 2011-02-16 |
Family
ID=50112253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020219779.3U Expired - Fee Related CN201749151U (en) | 2010-05-20 | 2010-05-28 | Miniature digital electric meter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201749151U (en) |
| TW (1) | TWM398119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292384A (en) * | 2013-06-19 | 2013-09-11 | 浙江盾安自控科技有限公司 | Heating measuring system with on-off time area method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114079395A (en) | 2020-08-19 | 2022-02-22 | 台达电子工业股份有限公司 | Light source system, driver and operation method thereof |
-
2010
- 2010-05-20 TW TW099209468U patent/TWM398119U/en not_active IP Right Cessation
- 2010-05-28 CN CN201020219779.3U patent/CN201749151U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292384A (en) * | 2013-06-19 | 2013-09-11 | 浙江盾安自控科技有限公司 | Heating measuring system with on-off time area method |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM398119U (en) | 2011-02-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20180528 |