CN106707073A - Electrostatic discharging detection circuit and system - Google Patents
Electrostatic discharging detection circuit and system Download PDFInfo
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- CN106707073A CN106707073A CN201710134222.6A CN201710134222A CN106707073A CN 106707073 A CN106707073 A CN 106707073A CN 201710134222 A CN201710134222 A CN 201710134222A CN 106707073 A CN106707073 A CN 106707073A
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- 238000001514 detection method Methods 0.000 title claims abstract description 38
- 238000007599 discharging Methods 0.000 title abstract 13
- 239000003990 capacitor Substances 0.000 claims abstract description 35
- 230000005611 electricity Effects 0.000 claims abstract description 34
- 230000003068 static effect Effects 0.000 claims description 38
- 210000000707 wrist Anatomy 0.000 claims description 13
- 238000002955 isolation Methods 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 8
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- 210000003423 ankle Anatomy 0.000 claims description 3
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- 230000002159 abnormal effect Effects 0.000 abstract description 3
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- 238000011897 real-time detection Methods 0.000 abstract description 2
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- 238000012360 testing method Methods 0.000 description 5
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- 238000007405 data analysis Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005421 electrostatic potential Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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Abstract
The invention discloses an electrostatic discharging detection circuit and system. The electrostatic discharging detection circuit comprises a human body electrostatic drainage loop and a human body electrostatic discharging loop, wherein the human body electrostatic drainage loop and the human body electrostatic discharging loop are both connected with a first end of a capacitor; the first end of the capacitor is also connected with a gathering voltage detection loop; and a second end of the capacitor is grounded. The electrostatic discharging detection circuit is smart in design and simple in structure; under the condition of guaranteeing normal electrostatic discharging, the capacitor is arranged as a residue charge sampling capacitor; when a discharging circuit is utilized to normally discharge, the capacitor does not gather electricity; and when the discharging of the discharging circuit is abnormal, on the basis of the characteristic of gathering electrostatic voltage rise of the capacitor, a real-time detection circuit is adopted for detecting and acquiring a quantized signal for reflecting the electrostatic discharging state, so that an effective data support is supplied for the evaluation for the electrostatic discharging state of an electrostatic discharging system.
Description
Technical field
The present invention relates to one kind detection circuit and system, more particularly to a kind of electrostatic leakage detection circuit and system.
Background technology
Electrostatic is to cause the redistribution of electric charge by friction and formed, and is also had because attracting each other for electric charge causes electricity
The redistribution of lotus is formed.
In process of production, when object electrostatic accumulation to a certain extent, or the projecting medium of its current potential breakdown field
Qiang Shi, will occur static discharge phenomenon, and this static discharge phenomenon is the gas that electric field energy causes electrical body surrounding space
The energy release process for ionization occurring and producing, i.e. electrostatic energy is changed into the process of heat energy, luminous energy and acoustic energy.
According to the luminous form of static discharge, static discharge can be divided into corona discharge, brush discharge, spark discharge and
Along the surface-discharge of electrical body surface light emitting, spark discharge mostly occurs between metal object.Interelectrode air quilt during electric discharge
Puncture, form the discharge channel concentrated very much, this kind of discharge energy release is fast and concentrates, therefore its danger ignited is maximum.
Static discharge can cause fault in production, for example, semiconductor element can be made to wreck, and use the electronics of these elements
There is misoperation and break down in device etc.；Static noise can cause information error；Fire and blast can be caused；And to human body
Electrostatic shock is produced, numb shouting pain, or even severe pain can be produced, cause the discomfort of body and psychology.
Therefore, during operating personnel's operation in producing line, to be protected by a series of electrostatic safety safeguard procedures, these
Measure includes but are not limited to wear the measures such as anti-electrostatic clothing, anti-static shoes, band ESD-preventive wrist strap, but these measures are for quiet
Electricity protection actual effect on earth how, be required for various evaluation and test means to go to be detected, evaluate and test.
For example, for anti-electrostatic clothing, usually artificially testing its sheet resistance and Abrasive voltage, a fixed limit is such as less than
System, then it is assumed that it is electrostatic protection safety, but this evaluation and test mode is problematic：
Just as it is well known that the height and personnel's movement range and two mutual rubbers of two material Abrasive voltages and electricity
Electrostatic order between matter has a relation, and evaluating result anti-electrostatic clothing when also only can be shown that test and appraisal state, so
Simple laboratory evaluating method cannot truly reflect actual electrostatic protection situation of the antistatic clothing in actual application environment, one
The result of denier laboratory test and appraisal differs greatly with the situation of practical application scene, individually carries out electrostatic protection using anti-electrostatic clothing
May cause the accident, there is certain hidden danger.
Further, since the staff in producing line is thousands of, the electrostatic protection effect of every anti-electrostatic clothing is entered
Row detection is also the engineering that takes time and effort, and due to needing special mechanism and equipment to be detected, it is impossible in work people
Employee as while carry out on-line checking, influence the production of enterprise.
And when by anti-electrostatic clothing with other electrostatic protection measure combinations, cannot be reacted by quantized data online again
Electrostatic leakage state.
Finally, due to different producing lines, different stations there may be difference for the requirement of electrostatic protection, it is therefore desirable to
Different management and control requirements, and existing systems for providing electrostatic discharge protection is unable to reach this requirement.
The content of the invention
The purpose of the present invention is exactly to solve the above-mentioned problems in the prior art, there is provided a kind of electrostatic leakage detection
Circuit and system.
The purpose of the present invention is achieved through the following technical solutions：
Electrostatic leakage detects circuit, including static electricity on human body's drainage loop, static electricity on human body's bleed-off circuit, and static electricity on human body's drainage is returned
Road, static electricity on human body's bleed-off circuit are all connected with the first end of capacitor, and the first end of the capacitor is also associated with gathering voltage inspection
Survey time road and its second end be grounded.
Preferably, described electrostatic leakage detection circuit, wherein：Static electricity on human body's drainage loop includes anti-electrostatic clothing
Upper setting for by the conductive strips at electrostatic guide to the capacitor.
Preferably, described electrostatic leakage detection circuit, wherein：Static electricity on human body's leadage circuit is that wrist static electrification is let out
Place system and/or ankle static electrification bleed-off system.
Preferably, described electrostatic leakage detection circuit, wherein：The first end of the capacitor is also associated with electric conductor,
The electric conductor is electrically connected with the electrochromic material on antistatic clothing.
Preferably, described electrostatic leakage detection circuit, wherein：The voltage detection circuit of gathering is connected including input
The isolation voltage generative circuit of the capacitor first end, the output end connection signal condition of the isolation voltage generative circuit is put
The output end of big circuit, the output end of the signal condition amplifying circuit connects the input of filter circuit, the filter circuit
The secondary amplifying circuit of output end link signal input, the secondary amplifying circuit of signal output end connection modulation circuit
Input, the output end of the modulation circuit produces modulated signal.
Preferably, described electrostatic leakage detection circuit, wherein：The isolation voltage generative circuit includes connection dual power supply
First comparator, the positive input ground connection of the first comparator, the reverse input end of the first comparator is by the
One resistance connects the first end of the capacitor, and the output end of the first comparator is connected by second resistance, and described the
The output end of one comparator connects the second comparator of connection dual power supply in the signal condition amplifying circuit by 3rd resistor
Positive input, the positive input of second comparator and the 3rd resistor by the 5th resistance eutral grounding, described the
The reverse input end of two comparators connects the output end of second comparator by the 6th resistance by the 4th resistance eutral grounding,
The output end of second comparator connects one end of the 7th resistance, and the other end of the 7th resistance meets institute by the 8th resistance
State the positive input of the 3rd comparator in filter circuit and by the reverse of the 3rd comparator described in the 6th capacitance connection
Input, the reverse input end of the 3rd comparator connects the output end of the 3rd comparator, the 3rd comparator
Output end connects the input of the secondary amplifying circuit of signal by the 9th resistance.
Preferably, described electrostatic leakage detection circuit, wherein：The secondary amplifying circuit of signal compares including the 4th
Device, the positive input of the 4th comparator connects the output end of the 3rd comparator by the 9th resistance, described
The reverse input end of the 4th comparator by the tenth resistance eutral grounding, and connection slide rheostat one end and sliding contact, it is described
Another termination multi-point touch switch of slide rheostat, the first contact of the multi-point touch switch meets institute by the 11st resistance
The output end of the 4th comparator is stated, the second contact of the multi-point touch switch connects the 4th comparator by the 12nd resistance
Output end, the output end of the 4th comparator connects the modulation circuit.
Preferably, described electrostatic leakage detection circuit, wherein：The modulation circuit includes the 5th comparator, described the
The positive output end of five comparators connects reference voltage terminal and connects the signal by the 13rd resistance by the 14th resistance
The output end of secondary amplifying circuit, the inverse output terminal of the 5th comparator is by the 15th resistance eutral grounding and by the tenth
Six resistance connect the output end of the 5th comparator, and the 5th comparator is grounded by diode and exports modulated signal.
Electrostatic leakage detecting system, including at least one above-mentioned electrostatic leakage detection circuit, the electrostatic leakage detection electricity
Road connects intelligent control unit, the intelligent control unit and background control system connection communication by analog-digital converter.
Preferably, described electrostatic leakage detecting system, wherein：It is provided with the background control system for controlling not
With the configuration software of the alarm threshold magnitude of voltage of station, the background control system connects and controls the acousto-optic set at each station
Warning device.
The advantage of technical solution of the present invention is mainly reflected in：
Deft design of the present invention, simple structure on the premise of normal electrostatic leakage is ensured, residual is used as by setting capacitor
Sample charge electric capacity, when releasing normal using leadage circuit, capacitor does not gather electricity and leadage circuit when releasing abnormal, capacitor collection
The characteristic that poly- electrostatic potential rises, the quantized signal for obtaining reacting electrostatic leakage state is detected by real-time detection circuit,
So as to be supported for the electrostatic leakage state evaluation of electrostatic leakage system provides effective data.
Anti-electrostatic clothing is combined with other electrostatic leakage systems, various protection effects are realized, and in antistatic clothing
The electrochromic material for being provided for reacting its deflated state is loaded onto, more direct screening is easy to find electrostatic leakage abnormal conditions, so that
Remove a hidden danger.
System of the invention can simultaneously realize the real-time of the effect of releasing of everyone's systems for providing electrostatic discharge protection at multiple stations
On-line monitoring, more preferably can accurately react the validity and real-time of whole systems for providing electrostatic discharge protection, and it is possible to according to difference
Station requirement alarm threshold magnitude of voltage is set, the scope of application is wider, and flexibility is more preferably.
System of the invention can in real time preserve the real-time quantization data of the systems for providing electrostatic discharge protection at each station, be the later stage
Technological improvement optimization provides reliable Information Assurance.
Brief description of the drawings
Fig. 1 is the structural representation that electrostatic leakage of the invention detects circuit
Fig. 2 is the circuit diagram for gathering voltage detection circuit of the invention.
Fig. 3 is the structural representation of electrostatic leakage detecting system of the invention.
Specific embodiment
The purpose of the present invention, advantage and feature, by by the non-limitative illustration of preferred embodiment below carry out diagram and
Explain.These embodiments are only the prominent examples using technical solution of the present invention, it is all take equivalent or equivalent transformation and
The technical scheme of formation, all falls within the scope of protection of present invention.
Present invention is disclosed electrostatic leakage detection circuit, as shown in Figure 1, it includes static electricity on human body's drainage loop 1, human body
Electrostatic leakage loop 2, the output end in static electricity on human body's drainage loop 1, the input of static electricity on human body's bleed-off circuit 2 are all connected with electricity
The first end of container C1, the first end of the capacitor C1 be also associated with gathering the input of voltage detection circuit 3 and its second
End ground connection.
Wherein, static electricity on human body's drainage loop 1 including antistatic clothing load onto setting for by electrostatic guide to described
Conductive strips at capacitor C1, the conductive strips can be set according to actual needs in the laying form that antistatic clothing is loaded onto
Put；Also, static electricity on human body's leadage circuit 2 is wrist static electrification bleed-off system and/or ankle static electrification bleed-off system, preferably
It is wrist static electrification bleed-off system, therefore the conductive strips are at least extended at the arm with antistatic wrist strap.
During specific connection, loaded onto in the antistatic clothing and be provided with a conductor element（Reversely one is done such as on clothes
Individual clinching）, at the wrist of people, it is connected and is connected by wire and is arranged on the conductor element with the conductive strips
The capacitor C1 on pcb board card, the conductor element is contacted with human body wrist, while the wrist static electrification bleed-off system
In wrist band also on human body wrist, therefore the conductive strips, wrist band and capacitor C1 are formed by human body wrist skin
Common connection.
Meanwhile, it is described to gather the isolation voltage that voltage detection circuit 3 connects the capacitor C1 first ends including input
Generative circuit 31, the output end of the output end connection signal condition amplifying circuit 32 of the isolation voltage generative circuit 31 is described
The output end of signal condition amplifying circuit 32 connects the input of filter circuit 33, the output end link letter of the filter circuit 33
The input of number secondary amplifying circuit 34, the output end of the secondary amplifying circuit 34 of signal connects the input of modulation circuit 35
End, the output end of the modulation circuit 35 produces modulated signal.
Specifically, as shown in Figure 2, the isolation voltage generative circuit 31 includes the first comparator of connection dual power supply
The positive supply termination positive supply of U6, the first comparator U6 is simultaneously grounded and the first comparator U6 by the first electric capacity C16
Positive input, the first comparator U6 negative supply termination negative supply and by the second electric capacity C22 be grounded, described first
The positive input ground connection of comparator U6, the reverse input end of the first comparator U6 connects circuit by first resistor R18
Access point INPUT, the circuit access point INPUT connect the first end of the capacitor C1, and the first comparator U6's is reverse
Input also connects the output end of the first comparator U6, the output end of the first comparator U6 by second resistance R23
The input of the signal condition amplifying circuit 32 is connect by 3rd resistor R1.
The signal condition amplifying circuit 32 includes that the positive supply of the second comparator U7A, the second comparator U7A is terminated
Positive supply is simultaneously grounded by the 3rd electric capacity C17, and the negative supply termination negative supply of the second comparator U7A simultaneously passes through the 4th electric capacity
C18 is grounded, and the positive input of the second comparator U7A connects the first comparator U6's by the 3rd resistor R1
Output end, the positive input of the second comparator U7A and the resistance R1 are grounded by the 5th resistance R41, and described the
The reverse input end of two comparator U7A is grounded by the 4th resistance R42, and by positioned at the reverse of the second comparator U7A
The 6th resistance R43 between input and the 4th resistance R42 connects the output end of the second comparator U7A, and described second compares
The output end of device U7A connects one end of the 7th resistance R19, and the other end of the 7th resistance R19 meets institute by the 8th resistance R20
State the positive input of the 3rd comparator U7B in filter circuit 33 and connect the described 3rd by the 6th electric capacity C20 and compare
The reverse input end of device U7B, the reverse input end of the 3rd comparator U7B connects the output end of the 3rd comparator U7B,
The output end of the 3rd comparator U7B connects the input of the secondary amplifying circuit 34 of signal.
The secondary amplifying circuit 34 of signal includes the 4th comparator U7C, the positive input of the 4th comparator U7C
The output end of the 3rd comparator U7B, the reverse input of the 4th comparator U7C are connected by the 9th resistance R24
End is grounded by the tenth resistance R30, and connects one end and the sliding contact of slide rheostat RP2, the slide rheostat RP2's
First contact of another termination multi-point touch switch S1, multi-point touch switch S1 connects described the by the 11st resistance R31
The output end of four comparator U7C, second contact of the multi-point touch switch S1 connects the 4th ratio by the 12nd resistance R33
Compared with the output end of device U7C, the output end of the 4th comparator U7C connects the modulation circuit 35.
The modulation circuit 35 includes the 5th comparator U7D, and the positive output end of the 5th comparator U7D passes through the tenth
Four resistance R26 are connected reference voltage terminal VRE and the output of the secondary amplifying circuit 34 of signal are connected by the 13rd resistance R25
End, the inverse output terminal of the 5th comparator U7D is grounded by the 15th resistance R27 and is connect by the 16th resistance R28
The output end of the 5th comparator U7D, the 5th comparator U7D is grounded by diode D2 and exports modulated signal.
When electrostatic leakage detection circuit of the invention works, its principle is as follows：
When the normal ground of static electricity on human body's bleed-off circuit 2 is released, the human body electrostatic and clothing produced with clothing friction
Directed at the capacitor C1 through the conductive strips and released back through the static electricity on human body with the electrostatic produced by clothing friction
The ground connection of road 2 is released, and now the capacitor C1 is shorted, and will not gather electrostatic, therefore the voltage detection circuit 3 of gathering is detected
The magnitude of voltage for obtaining is relatively low；
Due to the capacitor C1 and static electricity on human body's bleed-off circuit 2 and connect, when static electricity on human body's bleed-off circuit 2 ground connection is let out
After putting failure, the electrostatic of generation cannot be released, therefore the capacitor C1 gathers electrostatic, described to gather voltage detection circuit
The magnitude of voltage that 3 detections are obtained is higher.
In detection process, the capacitor C1 exists as sampling capacitance, and electrostatic charge is converted into voltage signal by it, institute
State voltage signal and be converted into isolation voltage through the isolation voltage generative circuit 31, then through the signal condition amplifying circuit 32
After carrying out first conditioning amplification, input is filtered to the filter circuit 33, after getting rid of corresponding interference signal, then is input into
It is worth the secondary amplifying circuit 34 of the signal to be amplified, finally enters the modulation circuit 35, modulated with the VRE, produces
Modulated signal.
Further, whether the electrostatic leakage state in order to more intuitive understanding static electricity on human body bleed-off circuit 2 is normal,
The first end of the capacitor C1 is also associated with electric conductor（Not shown in figure）, the electroluminescent change on the electric conductor and antistatic clothing
Color material electricity（Not shown in figure）Connection, because the working contents of producing line operating personnel are mainly manual operations, therefore institute
The coat-sleeve position that electrochromic material is preferably provided at antistatic protective garment is stated, can be easy to find.
When the ground connection of static electricity on human body's bleed-off circuit 2 is released to be broken down, the electrostatic electricity that the capacitor C1 gathers
When pressure gradually rises and reaches the discoloration critical value of electrochromic material, there is discoloration in the electrochromic material, now works
Personnel are that the static electricity on human body's bleed-off circuit 2 at can be known itself station breaks down such that it is able to timely evade potential risk.
The present invention has further disclosed a kind of electrostatic leakage detecting system, as shown in Figure 3, including at least one electrostatic
Release detection circuit, the quantity of the electrostatic leakage detection circuit can be configured according to the actual station number of producing line, accompanying drawing
In as a example by 3, each described electrostatic leakage detection circuit connects intelligent control unit 5 by analog-digital converter 4, specifically
, the output end of the 5th amplifier U7D in each described electrostatic leakage detection circuit connects the analog-digital converter 4, described
The modulated signal that 5th amplifier U7D is produced is input to after changing in the analog-digital converter 4 and sends into the intelligent control unit 5
In, the intelligent control unit 5 and the connection communication of background control system 6, their communication mode can be wireless communication,
Can also be wired network communication, preferably they use wireless self-networking mode connection communication, the intelligent control unit 5 is completed
The collection of the signal of each electrostatic leakage detection circuit is simultaneously uploaded to the background control system 6, and the background control system 6 is stored
Relative recording, is that follow-up data analysis creates condition.
Certainly in other embodiments, each analog-digital converter 4 can respectively connect an intelligent control unit 5, multiple
Intelligent control unit 5 respectively with the background control system connection communication；Can also multiple electrostatic leakages detection circuits connect jointly
An analog-digital converter 4 is connect, specific set-up mode can be set according to actual application conditions.
Also, the configuration of the alarm threshold magnitude of voltage for controlling different station is provided with the background control system 6
Software, back-stage management personnel can be by the configuration software in the background control system 6, according to different producing lines, different station
Place electrostatic protection requirement, set alarm threshold magnitude of voltage, when it is described gather voltage detection circuit 3 detection obtain at a certain station
Gather magnitude of voltage exceed set alarm threshold voltage when, the background control system 6 control be connected thereto and positioned at each work
The acoustic-optic alarm 7 set at position sends alarm, consequently facilitating the staff at the station is checked in time.
All technical sides that the present invention still has numerous embodiments, all use equivalents or an equivalent transformation and formed
Case, is within the scope of the present invention.
Claims (10)
1. electrostatic leakage detects circuit, it is characterised in that：Including static electricity on human body's drainage loop（1）, static electricity on human body's bleed-off circuit
（2）, static electricity on human body's drainage loop（1）, static electricity on human body's bleed-off circuit（2）It is all connected with capacitor（C1）First end, it is described
Capacitor（C1）First end be also associated with gathering voltage detection circuit（3）And its second end is grounded.
2. electrostatic leakage according to claim 1 detects circuit, it is characterised in that：Static electricity on human body's drainage loop（1）
Including antistatic clothing load onto setting for by electrostatic guide to the capacitor（C1）The conductive strips at place.
3. electrostatic leakage according to claim 2 detects circuit, it is characterised in that：Static electricity on human body's leadage circuit（2）
It is wrist static electrification bleed-off system and/or ankle static electrification bleed-off system.
4. electrostatic leakage according to claim 1 detects circuit, it is characterised in that：The capacitor（C1）First end also
Electric conductor is connected with, the electric conductor is electrically connected with the electrochromic material on antistatic clothing.
5. circuit is detected according to any described electrostatic leakages of claim 1-4, it is characterised in that：The voltage detecting of gathering is returned
Road（3）The capacitor is connected including input（C1）The isolation voltage generative circuit of first end（31）, the isolation voltage life
Into circuit（31）Output end connection signal condition amplifying circuit（32）Output end, the signal condition amplifying circuit（32）'s
Output end connects filter circuit（33）Input, the filter circuit（33）The secondary amplifying circuit of output end link signal
（34）Input, the secondary amplifying circuit of signal（34）Output end connection modulation circuit（35）Input, the tune
Circuit processed（35）Output end produce modulated signal.
6. electrostatic leakage according to claim 5 detects circuit, it is characterised in that：The isolation voltage generative circuit（31）
First comparator including connecting dual power supply（U6）, the first comparator（U6）Positive input ground connection, it is described first ratio
Compared with device（U6）Reverse input end pass through first resistor（R18）Connect the capacitor（C1）First end, and by second electricity
Resistance（R23）Connect the first comparator（U6）Output end, the first comparator（U6）Output end pass through 3rd resistor
（R1）Connect the signal condition amplifying circuit（32）Second comparator of middle connection dual power supply（U7A）Positive input, it is described
Second comparator（U7A）Positive input and the 3rd resistor（R1）Pass through the 5th resistance（R41）Ground connection, described second
Comparator（U7A）Reverse input end pass through the 4th resistance（R42）Ground connection, and by the 6th resistance（R43）Connect second ratio
Compared with device（U7A）Output end, second comparator（U7A）Output end connect the 7th resistance（R19）One end, the described 7th
Resistance（R19）The other end pass through the 8th resistance（R20）Connect the filter circuit（33）In the 3rd comparator（U7B）Forward direction
Input and by the 6th electric capacity（C20）Connect the 3rd comparator（U7B）Reverse input end, the 3rd comparator
（U7B）Reverse input end connect the 3rd comparator（U7B）Output end, the 3rd comparator（U7B）Output end
By the 9th resistance（R24）Connect the secondary amplifying circuit of the signal（34）Input.
7. electrostatic leakage according to claim 6 detects circuit, it is characterised in that：The secondary amplifying circuit of signal（34）
Including the 4th comparator（U7C）, the 4th comparator（U7C）Positive input pass through the 9th resistance（R24）Connection
3rd comparator（U7B）Output end, the 4th comparator（U7C）Reverse input end pass through the tenth resistance（R30）
Ground connection, and connection slide rheostat（RP2）One end and sliding contact, the slide rheostat（RP2）Another termination multiple spot
Touching switch（S1）, the multi-point touch switch（S1）The first contact pass through the 11st resistance（R31）The described 4th is connect to compare
Device（U7C）Output end, multi-point touch switch（S1）The second contact pass through the 12nd resistance（R33）Connect the 4th ratio
Compared with device（U7C）Output end, the 4th comparator（U7C）Output end connect the modulation circuit（35）.
8. electrostatic leakage according to claim 7 detects circuit, it is characterised in that：The modulation circuit（35）Including the 5th
Comparator（U7D）, the 5th comparator（U7D）Positive output end pass through the 14th resistance（R26）Connection reference voltage terminal
（VRE）And by the 13rd resistance（R25）Connect the secondary amplifying circuit of the signal（34）Output end, the 5th comparator
（U7D）Inverse output terminal pass through the 15th resistance（R27）It is grounded and by the 16th resistance（R28）The described 5th is connect to compare
Device（U7D）Output end, the 5th comparator（U7D）By diode（D2）It is grounded and exports modulated signal.
9. electrostatic leakage detecting system, it is characterised in that：Including any described electrostatic leakage inspections of at least one claim 1-8
Slowdown monitoring circuit, the electrostatic leakage detection circuit passes through analog-digital converter（4）Connection intelligent control unit（5）, the Based Intelligent Control
Unit（5）With background control system（6）Connection communication.
10. electrostatic leakage detecting system according to claim 9, it is characterised in that：The background control system（6）In set
It is equipped with the configuration software of the alarm threshold magnitude of voltage for controlling different station, the background control system（6）Connect and control
The acoustic-optic alarm set at each station（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710134222.6A CN106707073A (en) | 2017-03-08 | 2017-03-08 | Electrostatic discharging detection circuit and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710134222.6A CN106707073A (en) | 2017-03-08 | 2017-03-08 | Electrostatic discharging detection circuit and system |
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| CN106707073A true CN106707073A (en) | 2017-05-24 |
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| CN201710134222.6A Pending CN106707073A (en) | 2017-03-08 | 2017-03-08 | Electrostatic discharging detection circuit and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107715294A (en) * | 2017-11-29 | 2018-02-23 | 吕书 | A kind of static elimination method |
| CN108720808A (en) * | 2018-05-25 | 2018-11-02 | 北京理工大学 | A kind of Wrist belt-type static electricity on human body monitoring safety status instrument |
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| CN108720808A (en) * | 2018-05-25 | 2018-11-02 | 北京理工大学 | A kind of Wrist belt-type static electricity on human body monitoring safety status instrument |
| CN112986761A (en) * | 2021-02-08 | 2021-06-18 | 苏州天华超净科技股份有限公司 | Method for monitoring working performance of electrostatic eliminator |
| CN112986761B (en) * | 2021-02-08 | 2022-08-16 | 苏州天华超净科技股份有限公司 | Method for monitoring working performance of electrostatic eliminator |
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