CN106990439A - A kind of human body monitored for large area is to bit detector - Google Patents
A kind of human body monitored for large area is to bit detector Download PDFInfo
- Publication number
- CN106990439A CN106990439A CN201710340521.5A CN201710340521A CN106990439A CN 106990439 A CN106990439 A CN 106990439A CN 201710340521 A CN201710340521 A CN 201710340521A CN 106990439 A CN106990439 A CN 106990439A
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- resistance
- electric capacity
- circuit
- integrated circuits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
Abstract
The invention discloses a kind of human body for large area monitoring to bit detector, including induction electrode, oscillating circuit, tuning circuit, calibrate circuit, reference circuit, first decoupling circuit and the second decoupling circuit, the oscillating circuit, the power end of the tuning circuit and the reference circuit is electrically connected with external power supply, the induction electrode, the oscillating circuit, the tuning circuit, the calibration circuit and the reference circuit are sequentially connected in series, described first, which moves back even circuit, is arranged between the power end of the power end of the oscillating circuit and the tuning circuit, described second, which moves back even circuit, is arranged between the reference circuit and the external power supply；A kind of human body monitored for large area of the present invention coordinates matching capacitance to bit detector by an electrode and an oscillating circuit, realizes the high tolerance and the accurate detection close to human body on a face of sensor for temperature.
Description
Technical field
The present invention relates to human testing field, more particularly to a kind of human body monitored for large area is to bit detector.
Background technology
In traditional human body detection sensor, mainly by modes such as infrared, ultrasonic waves, and the detection of static human body
Typically detected by oscillating circuit, the electric signal produced by oscillating circuit is input into the detection circuit including detecting electric capacity
In reference circuit, and by detecting that the output of circuit and the output of reference circuit are compared, detect to detect the defeated of circuit
The waveform gone out or any change of phase, the detection electric capacity are set such that its electric capacity and become due to the close of human body
Change, the reference circuit is equivalent to detection circuit of the nobody under detection capacitive conditions, and such human body is close to detection
Circuit is just detected.But, using such human body detection sensor, detect electric capacity electric capacity is bigger and the continuous electric capacity that checks
Line is larger, and larger change occurs due to temperature for the electric capacity of detection electric capacity and line, because the reason of temperature detects circuit
Output in change so that detection circuit can not obtain constant testing result.
Partial solutions are to use to add temperature-compensation circuit, and the temperature according to detected by thermistor changes and made
For the threshold value of reference value, so that it is determined that human body proximity electric capacity, but in this case it is necessary to provide many for multiple detection electric capacity
Individual reference circuit and temperature-compensation circuit.
Can also be using the method for setting two oscillating circuits, by two oscillating circuits, two electrodes detect human body
Technology, influence of the temperature to circuit is solved by way of two vibrators.But in practical application, two electrode technologies are such as
Fruit will detect close either with or without human body on a face, it is necessary on this face, arrange multiple sensors, it is ensured that can on this face
The contact point of energy, people can touch two electrodes of same sensor simultaneously.
The content of the invention
The purpose of the present invention, which is that, provides a kind of human body monitored for large area in order to solve the above problems in place
Detector.
The present invention is achieved through the following technical solutions above-mentioned purpose：
A kind of human body monitored for large area is to bit detector, including induction electrode, oscillating circuit, tuning circuit, school
Quasi- circuit, reference circuit, the first decoupling circuit and the second decoupling circuit, the oscillating circuit, the tuning circuit and the base
The power end of quasi- circuit is electrically connected with external power supply, the induction electrode, the oscillating circuit, the tuning circuit, described
Calibration circuit and the reference circuit are sequentially connected in series, and first decoupling circuit is arranged on power end and the institute of the oscillating circuit
Between the power end for stating tuning circuit, second decoupling circuit is arranged between the reference circuit and the external power supply.
Further, the detector also include the 9th electric capacity, the tenth electric capacity, 3rd resistor, the 6th resistance, the 7th resistance,
8th resistance, the 9th resistance, the tenth resistance, the 11st resistance, the first indicator lamp, the second indicator lamp, the first inductance and the second electricity
Sense；
The oscillating circuit includes NE555 integrated circuits, first resistor, second resistance, the first electric capacity and the second electric capacity；
The tuning circuit includes the first diode, the second diode, the 5th electric capacity, the 6th electric capacity and the 4th resistance；
The calibration circuit includes the 5th resistance；
The reference circuit includes LM358 integrated circuits；
The external power supply is integrated by first inductance first end respectively with the first resistor, the NE555
The 4th pin, the 8th pin of the NE555 integrated circuits, the first end of the 3rd electric capacity, the 4th electric capacity of circuit
The first end, first end of the tenth electric capacity, the first end of the 3rd resistor, the first end of the 7th resistance, described
The positive voltage terminal of LM358 integrated circuits, the first end of the 7th electric capacity, the first end and the described 11st of the 8th electric capacity
The first end connection of resistance；
Induction electrode first end respectively with the first electric capacity, the first end of the second resistance, the NE555 are integrated
The 6th pin electrical connection of the second pin of circuit and the NE555 integrated circuits, the second end of the second resistance respectively with
The 7th pin connection of second end of the first resistor and the NE555 integrated circuits, the 5th of the NE555 integrated circuits the
Pin is connected with the first end of second electric capacity；
3rd pin of the NE555 integrated circuits is connected with the first end of the 9th electric capacity, the 9th electric capacity
Second end is connected with the negative pole of first diode and the positive pole of second diode, the negative pole point of second diode
Not with the first end of the 5th electric capacity, the first end of the 6th electric capacity, the second end of the tenth electric capacity, the 4th electricity
The first end of resistance, the second end of the 3rd resistor, the first end of the 5th resistance, the sliding end of the 5th resistance and institute
State the negative pole connection of LM358 integrated circuits, it is the positive pole of first diode the second end respectively with the 5th electric capacity, described
Second end of the 6th electric capacity, the second end of the 4th resistance connect and are grounded, the second end of the 5th resistance and described the
The first end connection of six resistance, the second end of the 7th resistance positive pole respectively with the LM358 integrated circuits, the described 8th
The first end of resistance and the connection of the first end of the 9th resistance, the second end of the 9th resistance respectively with the tenth resistance
First end and the LM358 integrated circuits output end connection, the second end of the tenth resistance and first indicator lamp
First end connection, the second end of the 11st resistance is connected with second indicator lamp, the first end of second inductance
It is connected with the reference ground of the detector, it is the second end of first electric capacity, the second end of second electric capacity, described
First pin of NE555 integrated circuits, the second end of the 6th resistance, the second end of the 8th resistance, the LM358 collection
Negative voltage side, the second end of first indicator lamp, the second end of second indicator lamp, the 3rd electric capacity into circuit
Second end, the second end of the 4th electric capacity, the second end of the 7th electric capacity, the second end of the 8th electric capacity, described
Second end of two inductance is grounded.
Preferably, the induction electrode be wire netting, the wire netting be fixed on net base or two net bases between, it is described
The size of wire netting is less than the size of the net base.
The beneficial effects of the present invention are：
A kind of human body monitored for large area of the present invention is matched somebody with somebody to bit detector by an electrode and an oscillating circuit
Matching capacitance is closed, the high tolerance and the accurate detection close to human body on a face of sensor for temperature is realized.
Brief description of the drawings
Fig. 1 is a kind of circuit diagram of the human body for large area monitoring of the present invention to bit detector.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of human body monitored for large area of the present invention is to bit detector, including induction electrode CN1, shake
Circuit 2, tuning circuit 4, calibration circuit 5, reference circuit 7, the first decoupling circuit 3, the second decoupling circuit 6 and multiple inside is swung to connect
The power end for connecing component oscillating circuit 2, tuning circuit 4 and reference circuit 7 is electrically connected with external power supply, induction electrode CN1,
Oscillating circuit 2, tuning circuit 4, calibration circuit 5 and reference circuit 7 are sequentially connected in series, and the first decoupling circuit 3 is arranged on oscillating circuit 2
Power end and tuning circuit 4 power end between, the second decoupling circuit 6 is arranged between reference circuit 7 and external power supply.
Oscillating circuit 2 includes NE555 ICs 1, first resistor R1, second resistance R2, the first electric capacity C1 and second
Electric capacity C2；Tuning circuit 4 includes the first diode D1, the second diode D2, the 5th electric capacity C5, the 6th electric capacity C6 and the 4th resistance
R4；Calibrating circuit 5 includes the 5th resistance R5；Reference circuit 7 includes LM358 ICs 2；Multiple internal connection component bags
Include the 9th electric capacity C9, the tenth electric capacity C10,3rd resistor R3, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance
R9, the tenth resistance R10, the 11st resistance R11, the first indicator lamp LED1, the second indicator lamp LED2, the electricity of the first inductance L1 and second
Feel L2；
External power supply by the first inductance L1 first ends respectively with first resistor R1, NE555 ICs 1 the 4th
Pin, the 8th pin of NE555 ICs 1, the 3rd electric capacity C3 first end, the 4th electric capacity C4 first end, the tenth electricity
Appearance C10 first end, 3rd resistor R3 first end, the 7th resistance R7 first end, the positive voltage of LM358 ICs 2
The first end connection at end, the 7th electric capacity C7 first end, the 8th electric capacity C8 first end and the 11st resistance R11；Induction electrode
CN1 respectively with the first electric capacity C1 first end, second resistance R2 first end, the second pin of NE555 ICs 1 and
The 6th pin electrical connection of NE555 ICs 1, second resistance R2 the second end respectively with first resistor R1 the second end and
The 7th pin connection of NE555 ICs 1, the 5th pin of NE555 ICs 1 and the second electric capacity C2 first end
Connection；3rd pin of NE555 ICs 1 is connected with the 9th electric capacity C9 first end, the 9th electric capacity C9 the second end with
First diode D1 negative pole and the second diode D2 positive pole connection, the second diode D2 negative pole respectively with the 5th electric capacity C5
First end, the 6th electric capacity C6 first end, the tenth electric capacity C10 the second end, the 4th resistance R4 first end, 3rd resistor R3
The second end, the 5th resistance R5 first end, the negative pole connection of the 5th resistance R5 sliding end and LM358 ICs 2, the
One diode D1 positive pole respectively with the 5th electric capacity C5 the second end, the 6th electric capacity C6 the second end, the 4th resistance R4 second
End is connected and is grounded, and the 5th resistance R5 the second end is connected with the 6th resistance R6 first end, the 7th resistance R7 the second end point
Positive pole, the 8th resistance R8 first end and the 9th resistance R9 first end not with LM358 ICs 2 are connected, the 9th electricity
Resistance R9 the second end is connected with the tenth resistance R10 first end and the output end of LM358 ICs 2 respectively, the tenth resistance
R10 the second end is connected with the first indicator lamp LED1 first end, the 11st resistance R11 the second end and the second indicator lamp LED2
The reference ground of connection, the second inductance L2 first end and detector connects, the first electric capacity C1 the second end, the second electric capacity C2
Second end, the first pin of NE555 ICs 1, the 6th resistance R6 the second end, the 8th resistance R8 the second end, LM358
The negative voltage side of IC 2, the first indicator lamp LED1 the second end, the second indicator lamp LED2 the second end, the 3rd electric capacity
C3 the second end, the 4th electric capacity C4 the second end, the 7th electric capacity C7 the second end, the 8th electric capacity C8 the second end, the second inductance
L2 the second end is grounded.
A kind of operation principle of human body to the bit detector monitored for large area of the present invention is as follows：
Induction electrode CN1 (part marked as 1 in accompanying drawing) is connected to oscillating circuit 2, such human body close to when, electricity
Line state changes；
Tuning circuit 4, the waveform frequency change for oscillating circuit 2 to be produced is converted to voltage change output, tuning electricity
Road 4 uses voltage doubling rectifing circuit.
Reference circuit 7, is compared for the output voltage with tuning circuit 4.
Circuit 5 is calibrated, for calibrating the voltage of reference circuit 7, the sensitivity of sensor is controlled.
NE555 ICs 1 constitute an oscillating circuit 2, its frequency of oscillation by the first electric capacity C1, first resistor R1,
The electric signal that second resistance R2 and induction electrode CN1 is introduced is determined.When human body is not close to induction electrode CN1, oscillating circuit 2 is produced
Frequency of oscillation it is very high；After human body is close to induction electrode CN1, because human body is close to produced electric capacity, resistance, inductance effect
In NE555 ICs 1, frequency of oscillation is reduced and stablized relatively, and this waveform passes through 3 pin of NE555 ICs 1
Output, is coupled to late-class circuit, the first diode D1, the second diode D2 composition voltage doubling rectifing circuit will through the 9th electric capacity C9
Frequency of oscillation becomes pulsating direct current, after being filtered through the 5th electric capacity C5, the 6th electric capacity C6, in the 4th resistance R4, the 5th resistance R5, the
Voltage signal is accumulated as on six resistance R6, acting on LM358 ICs 2, (it is substantially the double fortune of a conventional single supply
Put IC) negative level, this circuit only used the voltage comparator that operational amplifier is constituted, and negative level and positive step voltage compare, and bear
Level level is higher than positive level, OUT terminal (i.e. LM358 output end) output low level；Negative level is less than positive level level, the high electricity of OUT outputs
It is flat.
3rd electric capacity C3, the 4th electric capacity C4 and the 7th electric capacity C7, the 8th electric capacity C8 are the decoupling capacitance of power supply, rise and reduce electricity
Road is interrelated, the effect of stable electric signal.After switching on power, circuit is started working, and the tenth electric capacity C10 effect is to work as circuit
When not stablizing, the negative step voltage of LM358 ICs 2 is improved in short-term, make during start will not misoperation export of short duration height electricity
It is flat.After power on circuitry is stable, people not in place before, the 5th resistance R5 of regulation is slightly above the negative level current potential of LM358 ICs 2
Positive level, OUT is output as low level (the now sensitivity highest of sensor)；People in place after, due to the electric capacity, resistance and electricity of human body
Sense is significantly superimposed upon on induction electrode CN1, and formation is significantly increased to the oscillating capacitance of NE555 ICs 1, NE555 collection
Be greatly lowered into the frequency of oscillation of IC circuit 1, because the 9th electric capacity C9 capacitive reactance is acted on so that LM358 ICs 2 it is negative
The level value of circuit accumulation declines before level, and after this level voltage is lower than the voltage of positive level, LM358 ICs 2 are exported
OUT is high by low turn, completes human body and detects in place.
C9 is feedback resistance, and it, which is acted on, causes LM358 ICs 2 to play Schmidt trigger effect, makes circuit not
Become it is too sensitive but it is more stable.
Induction electrode CN1 uses wire netting, is fixed on above net base, and metal web area can be adjusted as needed, net base
Can be using materials such as cottons, wire netting can be between two layers of mesh base.
Technical scheme is not limited to the limitation of above-mentioned specific embodiment, and every technique according to the invention scheme is done
The technology deformation gone out, each falls within protection scope of the present invention.
Claims (3)
1. a kind of human body monitored for large area is to bit detector, it is characterised in that：Including induction electrode, oscillating circuit, tune
Humorous circuit, calibration circuit, reference circuit, the first decoupling circuit and the second decoupling circuit, the oscillating circuit, the tuning circuit
Electrically connected with the power end of the reference circuit with external power supply, the induction electrode, the oscillating circuit, tuning electricity
Road, the calibration circuit and the reference circuit are sequentially connected in series, and first decoupling circuit is arranged on the electricity of the oscillating circuit
Between the power end of source and the tuning circuit, second decoupling circuit is arranged on the reference circuit and the external electricity
Between source.
2. a kind of human body monitored for large area according to claim 1 is to bit detector, it is characterised in that：Also include
9th electric capacity, the tenth electric capacity, 3rd resistor, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the tenth
One resistance, the first indicator lamp, the second indicator lamp, the first inductance and the second inductance；
The oscillating circuit includes NE555 integrated circuits, first resistor, second resistance, the first electric capacity and the second electric capacity；
The tuning circuit includes the first diode, the second diode, the 5th electric capacity, the 6th electric capacity and the 4th resistance；
The calibration circuit includes the 5th resistance；
The reference circuit includes LM358 integrated circuits；
The external power supply passes through first inductance first end respectively with the first resistor, the NE555 integrated circuits
The 4th pin, the 8th pin of the NE555 integrated circuits, the first end of the 3rd electric capacity, the of the 4th electric capacity
One end, the first end of the tenth electric capacity, the first end of the 3rd resistor, the first end of the 7th resistance, the LM358
The positive voltage terminal of integrated circuit, the first end of the 7th electric capacity, the first end of the 8th electric capacity and the 11st resistance
First end connection；
Induction electrode first end respectively with the first electric capacity, the first end of the second resistance, the NE555 integrated circuits
Second pin and the NE555 integrated circuits the electrical connection of the 6th pin, the second end of the second resistance respectively with it is described
The 7th pin connection of second end of first resistor and the NE555 integrated circuits, the 5th pin of the NE555 integrated circuits
It is connected with the first end of second electric capacity；
3rd pin of the NE555 integrated circuits is connected with the first end of the 9th electric capacity, and the second of the 9th electric capacity
End is connected with the negative pole of first diode and the positive pole of second diode, the negative pole of second diode respectively with
The first end of 5th electric capacity, the first end of the 6th electric capacity, the second end of the tenth electric capacity, the 4th resistance
First end, the second end of the 3rd resistor, the first end of the 5th resistance, the sliding end of the 5th resistance and described
The negative pole connection of LM358 integrated circuits, the positive pole of first diode the second end respectively with the 5th electric capacity, described the
Second end of six electric capacity, the second end of the 4th resistance connect and are grounded, the second end and the described 6th of the 5th resistance
The first end connection of resistance, positive pole, the 8th electricity of the second end of the 7th resistance respectively with the LM358 integrated circuits
The first end of resistance and the connection of the first end of the 9th resistance, the second end of the 9th resistance respectively with the tenth resistance
First end and the connection of the output end of the LM358 integrated circuits, the second end and first indicator lamp of the tenth resistance
First end is connected, and the second end of the 11st resistance is connected with second indicator lamp, the first end of second inductance and
The reference ground connection of the detector, the second end of first electric capacity, the second end of second electric capacity, the NE555
First pin of integrated circuit, the second end of the 6th resistance, the second end of the 8th resistance, the integrated electricity of the LM358
The negative voltage side on road, the second end of first indicator lamp, the second end of second indicator lamp, the second of the 3rd electric capacity
End, the second end of the 4th electric capacity, the second end of the 7th electric capacity, the second end of the 8th electric capacity, second electricity
Second end of sense is grounded.
3. a kind of human body monitored for large area according to claim 2 is to bit detector, it is characterised in that：The sense
It is wire netting to answer electrode, the wire netting be fixed on net base or two net bases between, the size of the wire netting is less than described
The size of net base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710340521.5A CN106990439A (en) | 2017-05-15 | 2017-05-15 | A kind of human body monitored for large area is to bit detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710340521.5A CN106990439A (en) | 2017-05-15 | 2017-05-15 | A kind of human body monitored for large area is to bit detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106990439A true CN106990439A (en) | 2017-07-28 |
Family
ID=59419473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710340521.5A Pending CN106990439A (en) | 2017-05-15 | 2017-05-15 | A kind of human body monitored for large area is to bit detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106990439A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2061309U (en) * | 1989-12-19 | 1990-08-29 | 张蜀秦 | Electronic alarm for vehicle anti-climbing and goods theft-proof |
| JPH0765261A (en) * | 1993-08-26 | 1995-03-10 | Matsushita Electric Works Ltd | Human body detecting device |
| CN2256195Y (en) * | 1996-02-05 | 1997-06-11 | 张元庆 | Human body inducting electronic ignition controller |
| JP2001203565A (en) * | 2000-01-21 | 2001-07-27 | Honda Denshi Giken:Kk | Proximity sensor |
| JP2002177168A (en) * | 2000-12-12 | 2002-06-25 | Inax Corp | Seat-taking detector |
| CN2775938Y (en) * | 2005-04-20 | 2006-04-26 | 谢勇 | Inductive switch |
| CN101078774A (en) * | 2006-05-26 | 2007-11-28 | 株式会社藤仓 | Proximity sensor and proximity sensing method |
| CN101938270A (en) * | 2010-08-26 | 2011-01-05 | 刘家发 | Capacitance induction type approaching control device |
| CN103019432A (en) * | 2011-09-22 | 2013-04-03 | 黄立新 | Charged body sensing system |
| CN104614402A (en) * | 2013-11-05 | 2015-05-13 | 成都斯菲科思信息技术有限公司 | Detection circuit for detecting methane gas concentration |
| CN104634927A (en) * | 2013-11-11 | 2015-05-20 | 成都摩宝网络科技有限公司 | Air humidity monitoring and alarming simple circuit for aircraft cabin |
| CN206051594U (en) * | 2016-09-18 | 2017-03-29 | 柯淇环境技术(宁波)有限公司 | Water purification machine with human body sensing media presentation device |
| CN206804884U (en) * | 2017-05-15 | 2017-12-26 | 成都元象科技有限公司 | A kind of human body for large area monitoring is to bit detector |
-
2017
- 2017-05-15 CN CN201710340521.5A patent/CN106990439A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2061309U (en) * | 1989-12-19 | 1990-08-29 | 张蜀秦 | Electronic alarm for vehicle anti-climbing and goods theft-proof |
| JPH0765261A (en) * | 1993-08-26 | 1995-03-10 | Matsushita Electric Works Ltd | Human body detecting device |
| CN2256195Y (en) * | 1996-02-05 | 1997-06-11 | 张元庆 | Human body inducting electronic ignition controller |
| JP2001203565A (en) * | 2000-01-21 | 2001-07-27 | Honda Denshi Giken:Kk | Proximity sensor |
| JP2002177168A (en) * | 2000-12-12 | 2002-06-25 | Inax Corp | Seat-taking detector |
| CN2775938Y (en) * | 2005-04-20 | 2006-04-26 | 谢勇 | Inductive switch |
| CN101078774A (en) * | 2006-05-26 | 2007-11-28 | 株式会社藤仓 | Proximity sensor and proximity sensing method |
| CN101938270A (en) * | 2010-08-26 | 2011-01-05 | 刘家发 | Capacitance induction type approaching control device |
| CN103019432A (en) * | 2011-09-22 | 2013-04-03 | 黄立新 | Charged body sensing system |
| CN104614402A (en) * | 2013-11-05 | 2015-05-13 | 成都斯菲科思信息技术有限公司 | Detection circuit for detecting methane gas concentration |
| CN104634927A (en) * | 2013-11-11 | 2015-05-20 | 成都摩宝网络科技有限公司 | Air humidity monitoring and alarming simple circuit for aircraft cabin |
| CN206051594U (en) * | 2016-09-18 | 2017-03-29 | 柯淇环境技术(宁波)有限公司 | Water purification machine with human body sensing media presentation device |
| CN206804884U (en) * | 2017-05-15 | 2017-12-26 | 成都元象科技有限公司 | A kind of human body for large area monitoring is to bit detector |
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