CN106096591A - Hand exercise signal acquiring system based on flexible circuit - Google Patents
Hand exercise signal acquiring system based on flexible circuit Download PDFInfo
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- CN106096591A CN106096591A CN201610573696.6A CN201610573696A CN106096591A CN 106096591 A CN106096591 A CN 106096591A CN 201610573696 A CN201610573696 A CN 201610573696A CN 106096591 A CN106096591 A CN 106096591A
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- signal
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- hand exercise
- system based
- flexible circuit
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/20—Movements or behaviour, e.g. gesture recognition
- G06V40/28—Recognition of hand or arm movements, e.g. recognition of deaf sign language
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/30—Noise filtering
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H50/00—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics
- G16H50/20—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for computer-aided diagnosis, e.g. based on medical expert systems
Abstract
In order to realize the accurate measurements of high-precision hand slight amplitude signal with relatively low cost, the invention provides a kind of hand exercise signal acquiring system based on flexible circuit, including: flexible testing circuit and Signal Pretreatment unit；Wherein said Signal Pretreatment unit includes small signals amplification unit, in order to be amplified the signal obtained through Phase Processing.The present invention can improve signal to noise ratio when small signals amplification processes, and reduces the power consumption of small signals amplification interlock circuit.
Description
Technical field
The present invention relates to Technique of Weak Signal Detection field, transport more particularly, to a kind of hand based on flexible circuit
Dynamic signal acquiring system.
Background technology
During rehabilitation medical, research worker generally uses the hand exercise signal pickup assembly of external import, to people
The hand exercise ability of body is monitored in real time, but due to most rehabilitation medicals during, for hand bending, digital flexion etc.
The less situation of amplitude, the signal monitored is the faintest, and is highly susceptible to other medical treatment of human peripheral to be detected
The white noise interference of instrument, produces distortion in phase place, and the signal therefore obtained in the monitoring of this initial stage is often difficult to accurately reflect
The accurate hand recovery of monitored person.
Additionally, the hand exercise signal pickup assembly of external import (the such as medical signal of the company such as Siemens, Toshiba is adopted
Collecting system) the most expensive so that and collection and the monitoring price of hand exercise signal are high, thus hinder rehabilitation medical
Development.
Summary of the invention
In order to realize high-precision hand slight amplitude with relatively low cost, (" slight amplitude " alleged by the present invention is often referred to
The position to be monitored motion amplitude in its direction of motion is more than 2mm and less than 15mm) accurate measurements of signal, the present invention provides
A kind of hand exercise signal acquiring system based on flexible circuit, including:
Flexible testing circuit, wherein gathers hand exercise signal；
Signal Pretreatment unit, for carrying out pretreatment to described analogue signal.
Further, described flexible testing circuit includes motion detection sensing unit, for detecting what hand exercise produced
Analogue signal.
Further, described motion detection sensing unit includes that motor message detector unit and motor message detection are opened single
Unit, the detection of described motor message is opened unit and is exported START signal to described small signals amplification unit, and wherein said signal is pre-
Processing unit includes small signals amplification unit, in order to be amplified the signal obtained through Phase Processing.
Further, described motor message detector unit includes:
Move distance sensor array, for array travel detection detected part motion in the movement direction away from
From.
Further, described motor message detection unlatching unit includes:
Acceleration transducer array, for detecting the acceleration information of detected part in an array manner；
Angular transducer array, for detecting the angle change information of detected part in an array manner.
Further, described Signal Pretreatment unit includes small signals amplification unit and A/D converting unit, and described A/D turns
Change unit for the analogue signal through pretreatment is converted into digital signal.
Further, described small signals amplification unit includes two-stage signal amplifying unit, two-stage phasing unit and two
Level signal filtering unit.
Further, described small signals amplification unit includes:
First signal filtering unit, for carrying out first order Filtering Processing to described analogue signal；
First signal amplification unit, for carrying out first order processing and amplifying to described analogue signal；
First phase adjustment unit, for entering the signal obtained through first order Filtering Processing and first order processing and amplifying
Row first order phase place adjusts；
Secondary signal filter unit, for carrying out second level filtering to the signal obtained through the adjustment of first order phase place；
Secondary signal amplifying unit, for the signal filtered through the first order and the signal obtained through second level filtering
Carry out second level processing and amplifying.
Further, described move distance sensor array includes infrared displacement sensor array.
Further, described A/D converting unit uses ADS7825.
Further, described acceleration transducer array uses three dimension acceleration sensor.
The invention have the benefit that
(1) can reduce in small-signal amplification process based on phase transition and signal processing, may be caused by noise
Interference, thus improve signal to noise ratio when small signals amplification processes.
(2) judge that detected part is the most really subjected to displacement or angle according to the sensor output signal summation that motion is relevant
Change, and using this signal as the switching signal of small signals amplification device, thus reduce the power consumption of small signals amplification interlock circuit,
Extend the life-span of instrumentation amplifier, and then extend the use of whole hand exercise signal acquiring system based on flexible circuit
Life-span.
Accompanying drawing explanation
Fig. 1 shows the composition frame chart of the hand exercise signal acquiring system based on flexible circuit according to the present invention.
Fig. 2 shows the circuit diagram of the small signals amplification unit according to the present invention.
Detailed description of the invention
As it is shown in figure 1, according to a preferred embodiment of the invention, hand exercise signal acquiring system bag based on flexible circuit
Include:
Flexible testing circuit, wherein gathers hand exercise signal；
Signal Pretreatment unit, for carrying out pretreatment to described analogue signal.
Described flexible testing circuit includes motion detection sensing unit, for detecting the analogue signal that hand exercise produces.
According to a preferred embodiment of the invention, described motion detection sensing unit includes motor message detector unit and motion
Signal detection opens unit, and the detection of described motor message is opened unit and exported START signal to described small signals amplification unit, and
Wherein said Signal Pretreatment unit includes small signals amplification unit, in order to put the signal obtained through Phase Processing
Greatly.
Described motor message detector unit includes move distance sensor array, detects portion to be measured for the traveling with array
Position move distance in the movement direction.This move distance sensor is for example with infrared displacement sensor, to detect finger etc.
The displacement of detected part.This move distance sensor array is made up of with a matrix type multiple move distance sensors,
Thus for detecting finger, wrist, waist etc., there is the detected part of different geometries and size.
According to a preferred embodiment of the invention, starting of described motor message detector unit is subject to specific unlatching signal
Control.Specifically, this unlatching signal is opened unit by motor message detection and is produced, and the detection of this motor message is opened unit and included:
Acceleration transducer array, for detecting the acceleration information of detected part in an array manner；
Angular transducer array, for detecting the angle change information of detected part in an array manner；
Comparison circuit, for determining that the output signal of described acceleration transducer array and described angular transducer array is
No all exceed predetermined threshold value；
AND circuit, for according to the output signal of described comparison circuit, to described acceleration transducer array and described
The output signal of angular transducer array is carried out and computing.
Above-mentioned acceleration transducer array and angular transducer array are respectively by multiple acceleration transducers and multiple angle
Sensor is constituted in an array manner.The concrete structure of its matrix form can be according to the different geometries of detected part and chi
Very little formation.Preferably, described acceleration transducer array uses three dimension acceleration sensor, and described angular transducer uses top
Spiral shell instrument angularly sensor.
When comparison circuit is through comparing, determine what described acceleration transducer array and described angular transducer array exported
When accekeration and angle changing value all exceed predetermined threshold value (such as, acceleration ＞ 0, angle change ＞ 2 °), motor message is examined
The AND circuit surveying unlatching unit will be more than 0.7V DC voltage as START signal to the output of Signal Pretreatment unit.
Described Signal Pretreatment unit includes that small signals amplification unit and A/D converting unit, described A/D converting unit are used for
Analogue signal through pretreatment is converted into digital signal.According to a preferred embodiment of the invention, described A/D converting unit is adopted
Use ADS7825.
Described small signals amplification unit includes two-stage signal amplifying unit, two-stage phasing unit and two-stage signal filtering
Unit.Specifically, the circuit diagram of this small signals amplification unit is as in figure 2 it is shown, include:
First signal filtering unit, for carrying out first order Filtering Processing to described analogue signal；
First signal amplification unit, for carrying out first order processing and amplifying to described analogue signal；
First phase adjustment unit, for entering the signal obtained through first order Filtering Processing and first order processing and amplifying
Row first order phase place adjusts；
Secondary signal filter unit, for carrying out second level filtering to the signal obtained through the adjustment of first order phase place；
Secondary signal amplifying unit, for the signal filtered through the first order and the signal obtained through second level filtering
Carry out second level processing and amplifying.
Described move distance sensor array includes infrared displacement sensor array.
As in figure 2 it is shown, described small signals amplification unit includes: 15k Ω resistance, 20k Ω resistance, 50k Ω resistance, 1M Ω electricity
Resistance, 90 ° of phase shifters, 180 ° of phase shifters, the first operational amplifier, the second operational amplifier, the 3rd operational amplifier, the 4th computings
Amplifier, the 5th operational amplifier, the first transistor, transistor seconds, third transistor, the 4th transistor, the 5th transistor,
6th transistor, the 7th transistor, the 8th transistor, the 9th transistor, the tenth transistor, the first capacitor, the second capacitor,
3rd capacitor, the 4th capacitor, the first nor gate, the second nor gate, the first NAND gate, and the second NAND gate, wherein, institute
The signal input part stating small signals amplification unit connects the first end and the input of 90 ° of phase shifters of described 15k Ω resistance,
Second end of 15k Ω resistance connect the inverting input of the second operational amplifier, the normal phase input end of the first operational amplifier,
First end of one capacitor and the base stage of the first transistor, the second end ground connection of described first capacitor, the first operation amplifier
The outfan of device connects first input end and the first input end of the first nor gate of the first NAND gate, sending out of the first transistor
Emitter-base bandgap grading connects the colelctor electrode of transistor seconds, and the emitter stage of transistor seconds connects the colelctor electrode of third transistor, the 3rd crystal
The base stage of pipe is connected with the emitter stage of third transistor, and the base stage of transistor seconds connects the anti-phase input of the 3rd operational amplifier
End, the emitter stage of transistor seconds connects the inverting input of the first operational amplifier, and the emitter stage of third transistor connects the
Second input of one NAND gate and the second input of the first nor gate, and connect the first end of 50k Ω resistance, 50k Ω electricity
Second end of resistance connects the first end of the second capacitor, the second end ground connection of the second capacitor, and the first end of the second capacitor is even
Connecing the base stage of the 5th transistor, the colelctor electrode of the first transistor connects the emitter stage of the 8th transistor and the 3rd operational amplifier
Inverting input, the outfan of the first NAND gate connects the colelctor electrode of the 4th transistor, and the emitter stage of the 4th transistor connects respectively
Connecing two inputs of the second nor gate, the outfan of the first nor gate connects the colelctor electrode of the 5th transistor, the 5th transistor
Emitter stage connect two inputs of the second NAND gate, the outfan of the first nor gate connect the 3rd capacitor the first end and
The normal phase input end of the second operational amplifier, the second end ground connection of the 3rd capacitor, the outfan of the second NAND gate connects the 3rd
The normal phase input end of operational amplifier and the first end of the 4th capacitor, the second end ground connection of the 4th capacitor, the second computing is put
The outfan of big device connects colelctor electrode and the normal phase input end of four-operational amplifier, the 3rd operation amplifier of the 7th transistor
The outfan of device connects colelctor electrode and the inverting input of the 5th operational amplifier, the 6th transistor and the 7th of the 6th transistor
The base stage of transistor is connected with each other, and the emitter stage of the 6th transistor connects the inverting input of four-operational amplifier, and the 7th is brilliant
The emitter stage of body pipe connects the normal phase input end of the 5th operational amplifier, and the outfan of four-operational amplifier connects the 9th crystal
First end of pipe, the base stage of the 8th transistor connects power end, and the colelctor electrode of the 8th transistor passes through 20k Ω resistance eutral grounding, the
The colelctor electrode of eight transistors connects the outfan of the 5th operational amplifier, the outfan of four-operational amplifier by 1M Ω resistance
Connecting the colelctor electrode of the 9th transistor, the base stage of the 9th transistor connects the outfan of 90 ° of phase shifters and 180 ° of phase shifters
Input, the emitter stage of the 9th transistor connects the colelctor electrode of the tenth transistor, and it is brilliant that the outfan of 180 ° of phase shifters connects the tenth
The base stage of body pipe, the emitter stage of the tenth transistor connects the signal output part of described small signals amplification unit, described 4th crystal
The base stage of pipe connects START signal.
According to a preferred embodiment of the invention, described first capacitor is 0.1uF capacitor, and described second capacitor is
0.22uF capacitor, described 3rd capacitor is 0.47uF capacitor, and described 4th capacitor is 0.31uF capacitor, described electricity
Source is+5V DC source VCC.Above-mentioned each operational amplifier uses instrumentation amplifier.
The narration made for presently preferred embodiments of the present invention above is the purpose for illustrating, and is not intended to limit present invention essence
Really for disclosed form, learn and make an amendment or change to be possible based on above teaching or from embodiments of the invention
, embodiment is for explaining orally the principle of the present invention and allowing those skilled in the art utilize the present invention to exist with various embodiments
Actual application is upper and selects and narration, and the technological thought attempt of the present invention is determined by claim and equalization thereof.
Claims (10)
1. a hand exercise signal acquiring system based on flexible circuit, it is characterised in that including:
Flexible testing circuit, wherein gathers hand exercise signal；
Signal Pretreatment unit, for carrying out pretreatment to described analogue signal.
Hand exercise signal acquiring system based on flexible circuit the most according to claim 1, it is characterised in that described soft
Property testing circuit include motion detection sensing unit, for detect hand exercise produce analogue signal.
Hand exercise signal acquiring system based on flexible circuit the most according to claim 2, it is characterised in that described fortune
Dynamic detection sensing unit includes that unit is opened in motor message detector unit and motor message detection, and the detection of described motor message is opened
Unit exports START signal to described small signals amplification unit, and wherein said Signal Pretreatment unit includes small signals amplification
Unit, in order to be amplified the signal obtained through Phase Processing.
Hand exercise signal acquiring system based on flexible circuit the most according to claim 3, it is characterised in that described fortune
Dynamic detecting signal unit includes:
Move distance sensor array, for detecting detected part move distance in the movement direction with travelling of array.
Hand exercise signal acquiring system based on flexible circuit the most according to claim 3, it is characterised in that described fortune
Dynamic signal detection is opened unit and is included:
Acceleration transducer array, for detecting the acceleration information of detected part in an array manner；
Angular transducer array, for detecting the angle change information of detected part in an array manner.
Hand exercise signal acquiring system based on flexible circuit the most according to claim 5, it is characterised in that described letter
Number pretreatment unit includes that small signals amplification unit, described small signals amplification unit include two-stage signal amplifying unit, two-stage phase
Position adjustment unit and two-stage signal filter unit.
Hand exercise signal acquiring system based on flexible circuit the most according to claim 5, it is characterised in that described weak
Signal amplification unit includes:
First signal filtering unit, for carrying out first order Filtering Processing to described analogue signal；
First signal amplification unit, for carrying out first order processing and amplifying to described analogue signal；
First phase adjustment unit, for carrying out the to the signal obtained through first order Filtering Processing and first order processing and amplifying
First order phase adjusts；
Secondary signal filter unit, for carrying out second level filtering to the signal obtained through the adjustment of first order phase place；
Secondary signal amplifying unit, for carrying out the signal filtered through the first order and the signal obtained through second level filtering
Second level processing and amplifying.
Hand exercise signal acquiring system based on flexible circuit the most according to claim 3, it is characterised in that described fortune
Dynamic range sensor array includes infrared displacement sensor array.
Hand exercise signal acquiring system based on flexible circuit the most according to claim 5, it is characterised in that described A/
D conversion unit uses ADS7825.
Hand exercise signal acquiring system based on flexible circuit the most according to claim 4, it is characterised in that described
Acceleration transducer array uses three dimension acceleration sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610573696.6A CN106096591B (en) | 2016-07-20 | 2016-07-20 | Hand exercise signal acquiring system based on flexible circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610573696.6A CN106096591B (en) | 2016-07-20 | 2016-07-20 | Hand exercise signal acquiring system based on flexible circuit |
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| CN106096591A true CN106096591A (en) | 2016-11-09 |
| CN106096591B CN106096591B (en) | 2019-04-16 |
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|---|---|---|---|---|
| CN102138860A (en) * | 2011-01-10 | 2011-08-03 | 西安交通大学 | Intelligentized rehabilitation training equipment for hand functions of patients suffering from cerebral injury |
| CN102499690A (en) * | 2011-10-11 | 2012-06-20 | 江苏德长医疗科技有限公司 | Gait detection device of foot drop corrector |
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| CN203786666U (en) * | 2014-02-11 | 2014-08-20 | 浙江大学医学院附属第一医院 | Acquisition and transmission system for hand motion signals |
| CN104215363A (en) * | 2014-09-05 | 2014-12-17 | 浙江大学 | Soft tactile-slip sensation composite sensing array based on pressure-sensitive conductive rubber |
| CN105004453A (en) * | 2015-08-04 | 2015-10-28 | 安德润普科技开发（深圳）有限公司 | Pressure monitoring method and pressure monitoring system for intelligent pressure pads |
| CN105326513A (en) * | 2015-12-01 | 2016-02-17 | 岳凯 | Real-time monitoring system and method for lower-limb rehabilitation movement |
-
2016
- 2016-07-20 CN CN201610573696.6A patent/CN106096591B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102138860A (en) * | 2011-01-10 | 2011-08-03 | 西安交通大学 | Intelligentized rehabilitation training equipment for hand functions of patients suffering from cerebral injury |
| CN102499690A (en) * | 2011-10-11 | 2012-06-20 | 江苏德长医疗科技有限公司 | Gait detection device of foot drop corrector |
| CN102927899A (en) * | 2012-10-08 | 2013-02-13 | 东南大学 | Flexible shoulder joint motion sensor and measurement method thereof |
| CN103479362A (en) * | 2013-09-05 | 2014-01-01 | 南京邮电大学 | Motor function rehabilitation monitoring system based on wireless body area network |
| CN203786666U (en) * | 2014-02-11 | 2014-08-20 | 浙江大学医学院附属第一医院 | Acquisition and transmission system for hand motion signals |
| CN104215363A (en) * | 2014-09-05 | 2014-12-17 | 浙江大学 | Soft tactile-slip sensation composite sensing array based on pressure-sensitive conductive rubber |
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| CN105326513A (en) * | 2015-12-01 | 2016-02-17 | 岳凯 | Real-time monitoring system and method for lower-limb rehabilitation movement |
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