CN206497184U - A kind of detection means and the detection circuit for contactor - Google Patents
A kind of detection means and the detection circuit for contactor Download PDFInfo
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- CN206497184U CN206497184U CN201720095022.XU CN201720095022U CN206497184U CN 206497184 U CN206497184 U CN 206497184U CN 201720095022 U CN201720095022 U CN 201720095022U CN 206497184 U CN206497184 U CN 206497184U
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- contactor
- module
- resistance
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- filtering
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Abstract
The utility model belongs to contactor detection technique field, a kind of detection circuit there is provided detection means and for contactor, including filtering voltage reduction module, rectification filtering module, isolation module and detector, if the mechanical switch closure in contactor, the voltage of power circuit output charges by mechanical switch to charge-discharge circuit, make charge-discharge circuit be continuously contactor to power to keep mechanical switch to be in closure state, detection circuit no-voltage is inputted so that detector determines that contactor is in attracting state in the case where being not detected by electric signal；If mechanical switch disconnects, sequentially voltage reduction module is filtered decompression processing to the voltage of power circuit output after filtering and rectification filtering module is carried out after rectifying and wave-filtering processing, electric signal is exported to detector by isolation module, so that detector determines that contactor is in adhesive abnormality in the case where detecting electric signal.Thus achieve the effect that the adhesive degree to contactor is accurately detected.
Description
Technical field
The utility model belongs to contactor detection technique field, more particularly to a kind of detection means and the inspection for contactor
Slowdown monitoring circuit.
Background technology
At present, contactor because it possesses can the quickly and frequent performance and the property of low-voltage release guard of adhesive or disconnection
Can, it is widely used in distribution and electricity consumption etc. and is related in the system of automatic control technology, reaches control Gong Chang She Bei ﹑ electric heating
The purpose of the electrical load such as device ﹑ machine-tools and electric power unit.Therefore, whether contactor adhesive or adhesive fully will be direct
The stability and reliability of control system are had influence on, this allows for how precisely detecting that the attracting state of contactor necessitates.
It is by measuring contactor master however, typically detecting the attracting state of contactor using resistance detection method in the prior art
The impedance at contact two ends come judge main contact whether adhesive.Resistance detection method needs artificially to measure contactor using universal meter
The resistance at main contact two ends come judge main contact whether adhesive, this kind method detection difficulty is big and accuracy is low.
In summary, the existing adhesive detection technique for contactor has that detection difficulty is big and accuracy is low asks
Topic.
Utility model content
The utility model purpose is to provide a kind of detection means and the detection circuit for contactor, it is intended to solve existing
The adhesive detection technique for contactor the problem of there is big detection difficulty and low accuracy.
The utility model provides a kind of detection circuit for contactor, and the detection circuit accesses power circuit, institute
State contactor with charge-discharge circuit to be connected, the power circuit is connected by current limiting device with the charge-discharge circuit；Institute
State the voltage that power circuit exports and give charge-discharge circuit charging by the current limiting device, the charge-discharge circuit is described
Contactor is powered；The detection circuit includes：
Filter voltage reduction module, rectification filtering module, isolation module and detector；
The first input end of the filtering voltage reduction module connects the power circuit, the second input of the filtering voltage reduction module
Terminate the charge-discharge circuit, the first output end and the second output end of the filtering voltage reduction module respectively with the rectifying and wave-filtering
The first input end of module and the second input are connected, the first output end and the second output end point of the rectification filtering module
It is not connected with the first input end and the second input of the isolation module, the output of the isolation module terminates the detection
The input of device；
If the mechanical switch closure in the contactor, the voltage of the power circuit output passes through the mechanical switch
The charge-discharge circuit is charged, the charge-discharge circuit is continuously the contactor and powers to keep the machinery to open
Close and be in closure state, the detection circuit no-voltage is inputted so that the detector is true in the case where being not detected by electric signal
The fixed contactor is in attracting state；
If the mechanical switch disconnects, the voltage of the power circuit output sequentially enters by the filtering voltage reduction module
Row filtering decompression processing and the rectification filtering module are carried out after rectifying and wave-filtering processing, and electric signal is exported by the isolation module
To the detector, so that the detector determines that the contactor is different in adhesive in the case where detecting the electric signal
Normal state.
The utility model additionally provides a kind of detection means, including power circuit, current limiting device and charge-discharge circuit, institute
Stating detection means also includes above-mentioned detection circuit.
The utility model provides a kind of detection means and the detection circuit for contactor, detection circuit access power supply electricity
Road, contactor is connected with charge-discharge circuit, and power circuit is connected by current limiting device with charge-discharge circuit；Power circuit is defeated
The voltage gone out is charged by current limiting device to charge-discharge circuit, and charge-discharge circuit is powered for contactor；The detection circuit includes filter
Ripple voltage reduction module, rectification filtering module, isolation module and detector, if the mechanical switch closure in contactor, power supply electricity
The voltage of road output charges by mechanical switch to charge-discharge circuit, charge-discharge circuit is continuously contactor and powers to protect
Hold mechanical switch and be in closure state, detection circuit no-voltage is inputted so that detector is true in the case where being not detected by electric signal
Determine contactor and be in attracting state；If mechanical switch disconnects, the voltage of power circuit output sequentially voltage reduction module after filtering
It is filtered decompression processing and rectification filtering module is carried out after rectifying and wave-filtering processing, electric signal is exported to detection by isolation module
Device, so that detector determines that contactor is in adhesive abnormality in the case where detecting electric signal.Thus achieve docking
The effect that the adhesive degree of tentaculum is accurately detected, and contactor adhesive abnormality, convenient work can be detected in time
Personnel take corresponding counter-measure, it is to avoid cause unnecessary loss, and the circuit is simple and easy to apply, solve existing for connecing
The problem of adhesive detection technique of tentaculum has big detection difficulty and low accuracy.
Brief description of the drawings
The modular structure schematic diagram for the detection circuit for being used for contactor that Fig. 1 provides for the utility model embodiment；
The exemplary circuit structure chart for the detection circuit for being used for contactor that Fig. 2 provides for the utility model embodiment.
Embodiment
In order that the technical problems to be solved in the utility model, technical scheme and beneficial effect are more clearly understood, below
With reference to drawings and Examples, the utility model is further elaborated.It should be appreciated that specific implementation described herein
Example only to explain the utility model, is not used to limit the utility model.
A kind of detection means and the detection circuit for contactor are provided in the utility model embodiment, is mainly used in inspection
The adhesive degree of contactor 109 is surveyed, when 109 complete adhesive of contactor, mechanical switch K1 closures, power circuit 101 is directly passed through
Cross mechanical switch K1 to charge to charge-discharge circuit 103, charge-discharge circuit 103 is continuously contactor 109 and powers to keep machine
Tool switch K1 is in closure state, and the no-voltage input of detection circuit is so that detector 108 is not detected by electric signal；Work as contactor
When 109 adhesives are insufficient or disconnect, mechanical switch K1 is disconnected, and the voltage that power circuit 101 is exported sequentially is depressured after filtering
Module 105 is filtered decompression processing and rectification filtering module 106 is carried out after rectifying and wave-filtering processing, defeated by isolation module 107
Go out electric signal to detector 108, so that detector 108 detects electric signal.
Fig. 1 shows the modular structure for the detection circuit for being used for contactor that the utility model embodiment is provided, in order to just
In explanation, the part related to the utility model embodiment is illustrate only, details are as follows：
This kind is used for the detection circuit access power circuit 101 of contactor, and contactor 109 is connected with charge-discharge circuit 103
Connect, power circuit 101 is connected by current limiting device (Fig. 1 is represented using resistance R7) with charge-discharge circuit 103；Power circuit
101 voltages exported charge by resistance R7 to charge-discharge circuit 103, and charge-discharge circuit 103 is that contactor 109 is powered.Wherein,
Power circuit 101 is conventional AC power, and charge-discharge circuit 103 is the conventional charge and discharge device for including battery.Should
Detect that circuit includes filtering voltage reduction module 105, rectification filtering module 106, isolation module 107 and detector 108.
The first input end of filtering voltage reduction module 105 connects power circuit 101, filters the second input of voltage reduction module 105
Connect charge-discharge circuit 103, filter the first output end and the second output end of voltage reduction module 105 respectively with rectification filtering module 106
First input end and the second input be connected, the first output end and the second output end of rectification filtering module 106 respectively with
The first input end of isolation module 107 and the second input are connected, the output termination detector 108 of isolation module 107 it is defeated
Enter end.If the mechanical switch K1 closures in contactor 109, the voltage that power circuit 101 is exported is by mechanical switch K1 to filling
Discharge circuit 103 is charged, make charge-discharge circuit 103 be continuously contactor 109 power with keep mechanical switch K1 be in close
Conjunction state, detection circuit no-voltage is inputted so that detector 108 is determined at contactor 109 in the case where being not detected by electric signal
In attracting state.
If mechanical switch K1 disconnects, the voltage that power circuit 101 is exported sequentially filtered after filtering by voltage reduction module 105
Ripple decompression processing and rectification filtering module 106 are carried out after rectifying and wave-filtering processing, and electric signal is exported to detection by isolation module 107
Device 108, so that detector 108 determines that contactor 109 is in adhesive abnormality in the case where detecting electric signal.
As the embodiment of the utility model one, above-mentioned contactor 109 is in the coil that attracting state is specially contactor 109
The contact of complete adhesive and contactor 109 is closed completely.Herein, contactor 109 illustrates contactor 109 in attracting state
Performance and working condition are normal.Above-mentioned contactor 109 is not complete in the coil that adhesive abnormality is specially contactor 109
The contact of adhesive or contactor 109 is not closed completely.
Fig. 2 shows the exemplary circuit structure for the detection circuit for being used for contactor that the utility model embodiment is provided, and is
It is easy to explanation, illustrate only the part related to the utility model embodiment, details are as follows：
As the embodiment of the utility model one, above-mentioned power circuit 101 is specially the power circuit using power supply as core, electricity
Source can be the AC power for possessing fixed voltage output.
As the embodiment of the utility model one, above-mentioned charge-discharge circuit 103 specifically includes charging capacitor, charge-discharge circuit
103 can both receive the voltage of the output of power circuit 101, again can be discharged the electricity of storage.
As the embodiment of the utility model one, when contactor 109 is in attracting state, mechanical switch K1 closures, due to
Mechanical switch K1 resistance value very little, can be neglected, therefore the voltage that power circuit 101 is exported is no longer pass through resistance R7, and
It is to be directly over mechanical switch K1 to be charged to charge-discharge circuit 103, so that charge-discharge circuit 103 continues control contactor
109 are in attracting state；When contactor 109 is in adhesive abnormality, mechanical switch K1 disconnects, now power circuit 101
The voltage of output then can sequentially voltage reduction module 105 and rectification filtering module 106, and exported by isolation module 107 after filtering
Electric signal is to detector 108.Certainly, mechanical switch K1 can also be replaced with FET or triode, if can reach with
Function in the present embodiment described in mechanical switch K1 also may be used.
As the embodiment of the utility model one, above-mentioned filtering voltage reduction module 105 includes electric capacity C1, resistance R1, resistance R2, electricity
R3 and resistance R4 is hindered, electric capacity C1 first end connects and as the first of decompression filtration module 105 altogether with resistance R1 first end
Input, resistance R1 the second terminating resistor R3 first end, resistance R3 the second end is first defeated for filtering voltage reduction module 105
Go out end, electric capacity C1 the second end connects and as the second input of filtering voltage reduction module 105, resistance altogether with resistance R2 first end
R2 the second terminating resistor R4 first end, resistance R4 the second end is the second output end of filtering voltage reduction module 105.
As the embodiment of the utility model one, above-mentioned rectification filtering module 106 includes diode D1, diode D2, two poles
Pipe D3, diode D4 and electric capacity C2, diode D3 negative electrode connect and as rectification filtering module altogether with diode D1 anode
106 first input end, diode D4 negative electrode connects and as the second of rectification filtering module 106 altogether with diode D2 anode
Input, the first end of diode D1 negative electrode and diode D2 negative electrode and electric capacity C2 connects and as rectification filtering module altogether
106 the first output end, the second end of diode D3 anode and diode D4 anode and electric capacity C2 connects and as whole altogether
Flow the second output end of filtration module 106.
As the embodiment of the utility model one, above-mentioned isolation module 107 includes resistance R5, resistance R6 and photoelectrical coupler
OC1, resistance R5 first end and the input of photoelectrical coupler OC1 photophore connect and as the first of isolation module 107 altogether
Input, the output end of resistance R5 the second end and photoelectrical coupler OC1 photophore connects and as the of isolation module 107 altogether
Two inputs, resistance R6 the first termination supply voltage VCC, resistance R6 the second end and photoelectrical coupler OC1 light-receiving device
Input connects and as the output end of isolation module 107, the output head grounding of photoelectrical coupler OC1 light-receiving device altogether.
As the embodiment of the utility model one, above-mentioned detector 108 (Fig. 2 is represented using PA1) can be specifically electric current inspection
Device or ammeter are surveyed, also may be used as long as possessing detection function of current.
Enter below in conjunction with Fig. 1 and Fig. 2 to a kind of above-mentioned detection means and for the operation principle of the detection circuit of contactor
Row explanation：
First, power-on so that power circuit 101 is charged by resistance R7 to charge-discharge circuit 103, works as charge and discharge
When the electricity of circuit 103 reaches preset value, driving contactor 109 works；Then, contactor 109 carries out adhesive, works as contactor
During 109 complete adhesive, mechanical switch K1 closures, then power circuit 101 is no longer powered by R7 to charge-discharge circuit 103,
But be directly over mechanical switch K1 and charged to charge-discharge circuit 103, so that charge-discharge circuit 103 continues control contactor
109 are in attracting state；Once there is adhesive anomaly in contactor 109, be the adhesive of contactor 109 it is insufficient or disconnect
When, mechanical switch K1 also disconnects therewith, now power circuit 101 export voltage can sequentially after filtering electric capacity C1, resistance R1,
Resistance R2, resistance R3 and resistance R4 are filtered decompression processing, and by by diode D1, diode D2, diode D3
And the rectifier bridge of diode D1 compositions carries out rectification, then after being filtered by electric capacity C2, output optimization voltage is transferred to
Photoelectrical coupler OC1, the photoelectrical coupler OC1 conductings when voltage is more than 1.2V so that connect with photoelectrical coupler OC1 light-receiving device
The detector PA1 connect detects electric signal, so, and staff can learn the adhesive journey of contactor 109 by detector PA1
Degree, facilitates staff to take corresponding counter-measure, it is to avoid to cause unnecessary loss.
In summary, the utility model embodiment provides a kind of detection means and the detection circuit for contactor, inspection
Slowdown monitoring circuit accesses power circuit, and contactor is connected with charge-discharge circuit, and power circuit passes through current limiting device and charge-discharge circuit
It is connected；The voltage that power circuit is exported is charged by current limiting device to charge-discharge circuit, and charge-discharge circuit is powered for contactor；
The detection circuit includes filtering voltage reduction module, rectification filtering module, isolation module and detector, if the machinery in contactor
Switch closure, the voltage of power circuit output charges by mechanical switch to charge-discharge circuit, continues charge-discharge circuit
Powered for contactor to keep mechanical switch to be in closure state, the no-voltage input of detection circuit is so that detector is being not detected by
Determine that contactor is in attracting state in the case of electric signal；If mechanical switch disconnects, the voltage of power circuit output is sequentially
Voltage reduction module is filtered decompression processing after filtering and rectification filtering module is carried out after rectifying and wave-filtering processing, passes through isolation module
Electric signal is exported to detector, so that detector determines that contactor is in the abnormal shape of adhesive in the case where detecting electric signal
State.The effect that the adhesive degree to contactor is accurately detected is thus achieved, and contactor adhesive can be detected in time
Abnormality, facilitates staff to take corresponding counter-measure, it is to avoid cause unnecessary loss, and the circuit is simple and easy to apply,
Solve the problem of existing adhesive detection technique for contactor has big detection difficulty and low accuracy.This practicality is new
Type embodiment is realized simple, it is not necessary to increases extra hardware, can effectively reduce cost, with stronger ease for use and practicality
Property.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Any modifications, equivalent substitutions and improvements made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (5)
1. a kind of detection circuit for contactor, the detection circuit accesses power circuit, the contactor and discharge and recharge electricity
Road is connected, and the power circuit is connected by current limiting device with the charge-discharge circuit；The electricity of the power circuit output
Pressure charges by the current limiting device to the charge-discharge circuit, and the charge-discharge circuit is that the contactor is powered；Its feature
It is, the detection circuit includes：
Filter voltage reduction module, rectification filtering module, isolation module and detector；
The first input end of the filtering voltage reduction module connects the power circuit, the second input termination of the filtering voltage reduction module
The charge-discharge circuit, the first output end and the second output end of the filtering voltage reduction module respectively with the rectification filtering module
First input end and the second input be connected, the first output end and the second output end of the rectification filtering module respectively with
The first input end of the isolation module and the second input are connected, the output termination detector of the isolation module
Input；
If the mechanical switch closure in the contactor, the voltage of the power circuit output passes through the mechanical switch to institute
State charge-discharge circuit to be charged, the charge-discharge circuit is continuously the contactor and power to keep at the mechanical switch
In closure state, the detection circuit no-voltage input is so that the detector determines institute in the case where being not detected by electric signal
State contactor and be in attracting state；
If the mechanical switch disconnects, the voltage of the power circuit output is sequentially filtered by the filtering voltage reduction module
Ripple decompression processing and the rectification filtering module are carried out after rectifying and wave-filtering processing, and electric signal is exported to institute by the isolation module
Detector is stated, so that the detector determines that the contactor is in the abnormal shape of adhesive in the case where detecting the electric signal
State.
2. circuit is detected as claimed in claim 1, it is characterised in that the filtering voltage reduction module includes：
Electric capacity C1, resistance R1, resistance R2, resistance R3 and resistance R4；
The first end of the electric capacity C1 and the first end of the resistance R1 connect and as the first defeated of the filtering voltage reduction module altogether
Enter end, the second of the resistance R1 terminates the first end of the resistance R3, and the second end of the resistance R3 is the filtering decompression
First output end of module, the second end of the electric capacity C1 and the resistance R2 first end connect and are depressured as the filtering altogether
Second input of module, the second termination resistance R4 of resistance R2 first end, the second end of the resistance R4 is
Second output end of the filtering voltage reduction module.
3. circuit is detected as claimed in claim 1, it is characterised in that the rectification filtering module includes：
Diode D1, diode D2, diode D3, diode D4 and electric capacity C2；
The negative electrode of the diode D3 and the diode D1 anode connect and first defeated as the rectification filtering module altogether
Enter end, the negative electrode of the diode D4 and the diode D2 anode connect and second defeated as the rectification filtering module altogether
Enter end, the negative electrode of the diode D1 connects and as institute altogether with the negative electrode of the diode D2 and the first end of the electric capacity C2
State the first output end of rectification filtering module, the anode and the electric capacity of the anode of the diode D3 and the diode D4
C2 the second end connects and as the second output end of the rectification filtering module altogether.
4. circuit is detected as claimed in claim 1, it is characterised in that the isolation module includes：
Resistance R5, resistance R6 and photoelectrical coupler OC1；
The first end of the resistance R5 and the input of the photophore of the photoelectrical coupler OC1 connect and as the isolation mode altogether
The first input end of block, the second end of the resistance R5 and the output end of the photophore of the photoelectrical coupler OC1 connect and made altogether
For the second input of the isolation module, the first termination supply voltage of the resistance R6, the second end of the resistance R6 with
The input of the light-receiving device of the photoelectrical coupler OC1 connects and as the output end of the isolation module, the photoelectric coupling altogether
The output head grounding of device OC1 light-receiving device.
5. a kind of detection means, including power circuit, current limiting device and charge-discharge circuit, it is characterised in that the detection dress
Putting also includes the detection circuit as described in claim any one of 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720095022.XU CN206497184U (en) | 2017-01-24 | 2017-01-24 | A kind of detection means and the detection circuit for contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720095022.XU CN206497184U (en) | 2017-01-24 | 2017-01-24 | A kind of detection means and the detection circuit for contactor |
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| Publication Number | Publication Date |
|---|---|
| CN206497184U true CN206497184U (en) | 2017-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720095022.XU Active CN206497184U (en) | 2017-01-24 | 2017-01-24 | A kind of detection means and the detection circuit for contactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785209A (en) * | 2017-11-23 | 2018-03-09 | 四川大能科技有限公司 | Relay contact deoxidation module and method |
-
2017
- 2017-01-24 CN CN201720095022.XU patent/CN206497184U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785209A (en) * | 2017-11-23 | 2018-03-09 | 四川大能科技有限公司 | Relay contact deoxidation module and method |
| CN107785209B (en) * | 2017-11-23 | 2018-06-26 | 四川大能科技有限公司 | Relay contact deoxidation module and method |
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