CN202372558U - Voltage drop detection device for mechanical contact switch - Google Patents
Voltage drop detection device for mechanical contact switch Download PDFInfo
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- CN202372558U CN202372558U CN2011205546235U CN201120554623U CN202372558U CN 202372558 U CN202372558 U CN 202372558U CN 2011205546235 U CN2011205546235 U CN 2011205546235U CN 201120554623 U CN201120554623 U CN 201120554623U CN 202372558 U CN202372558 U CN 202372558U
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- voltage drop
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Abstract
The utility model discloses a voltage drop detection device for a mechanical contact switch, which comprises a power supply function module, a function module to be tested and a voltage drop detection function module, wherein the power supply function module is connected with the function module to be tested, the voltage drop detection function module, a protective function module, a voltage drop correction function module and a result judgment output function module by leads; the protective function module and the voltage drop detection function module are connected by a lead; the voltage drop correction function module and the function module to be tested are electrically connected; and the voltage drop detection function module and the result judgment output function module are connected by a lead. According to the voltage drop detection device for the mechanical contact switch, the problems of poor popularity and the like of the common contact switch voltage drop detection device used for automobiles as well as problems of high error rate, low judgment speed and the like because the detection device needs to artificially judge whether the voltage drop is qualified can be solved.
Description
Technical field
The utility model relates to switch with mechanical contact voltage drop detection range, refers more particularly to the detection of automobile with the voltage drop of switch with mechanical contact contact point.
Background technology
Along with advancing by leaps and bounds of auto manufacturing technology; Not only require the contact of vehicle switch contact reliable, stablize, and require the contact point voltage drop of switch controlled, and clearly define its scope; Technical parameter in automobile mechanical contact switch class is a controlled parameter; Must absolutely detect, but, need be equipped with the different detection device to different types of switch contact and detect because automobile is of a great variety with switch contact; And general pick-up unit all needs the numeral on the manual observation instrument to judge whether contact drop is qualified, exists to judge that error rate height and judgement speed wait problem slowly.
Summary of the invention
The technical matters that the utility model will solve: a kind of switch with mechanical contact voltage drop pick-up unit is provided, with solve conventional automobile with problem such as switch contact voltage drop pick-up unit versatility difference and pick-up unit need by the artificial judgment voltage drop whether high, the judgement speed of the qualified error rate that exists wait problem slowly.
The utility model technical scheme:
A kind of switch with mechanical contact voltage drop pick-up unit; It comprises power supply function module, functional module to be measured and voltage drop measuring ability module; The power supply function module judges that with functional module to be measured, voltage drop measuring ability module, defencive function module, voltage drop correction function module and result output function module lead is connected; The defencive function module is connected with voltage drop measuring ability module lead; The voltage drop correction function module is electrically connected with functional module to be measured, and voltage drop measuring ability module judges that with the result output function module lead is connected.
Power supply function module for power supply scope is DC6-24V, and electric current is 10mA-50A.
Voltage drop measuring ability module comprises resistance two, resistance three and resistance four; The power supply positive and negative terminal that it is cascaded and is connected on the power supply function module; Comparer one negative input end is connected on the normally opened contact two of relay one; The positive input terminal of comparer one positive input terminal and comparer two is connected between resistance two and the resistance four, and the negative input end of comparer two is connected with resistance five and is attempted by power supply negative terminal, the output termination voltage meter negative input end of comparer one; One end of the normally closed contact one of the output relay termination two of comparer two, another termination voltage meter positive input terminal of normally closed contact one.
The beneficial effect of the utility model:
The utility model is through two groups of power supply power supplies; V1 mainly is to the measured switch of functional module to be measured and electric; Power DC6-24V, electric current are 10mA-50A, can satisfy the testing requirement of automobile with switch contact; V2 mainly is to other functional module power supplies, has solved conventional automobile with problems such as switch contact voltage drop pick-up unit versatility differences; Proofread and correct the voltage drop of measured switch through the voltage drop correction function module and satisfy accuracy requirement; The voltage drop accuracy of detection can be reached for 1mV; Judge the output function module through the result; According to setting, convert the voltage drop testing result of element under test into signal output, solved need by the artificial judgment voltage drop whether high, the judgement speed of the error rate of qualified existence wait problem slowly.
Description of drawings:
Fig. 1 is the utility model theory diagram;
Fig. 2 is the utility model embodiment circuit diagram.
Embodiment:
A kind of switch with mechanical contact voltage drop pick-up unit; It comprises (see figure 1) power supply function module, functional module to be measured and voltage drop measuring ability module; The power supply function module judges that with functional module to be measured, voltage drop measuring ability module, defencive function module, voltage drop correction function module and result output function module lead is connected; The defencive function module is connected with voltage drop measuring ability module lead; The voltage drop correction function module is electrically connected with functional module to be measured, and voltage drop measuring ability module judges that with the result output function module lead is connected.
Power supply function module for power supply scope is DC6-24V, and electric current is 10mA-50A.
Voltage drop measuring ability module comprises resistance two R2, resistance three R3 and resistance four R4; The power supply positive and negative terminal that it is cascaded and is connected on the power supply function module; Comparer one IC1 negative input end is connected on normally opened contact two J12 of relay one J1; The positive input terminal of comparer one IC1 positive input terminal and comparer two IC2 is connected between resistance two R2 and resistance four R4, and the negative input end of comparer two IC2 is connected with resistance five R5 and is attempted by power supply negative terminal, the output termination voltage meter negative input end of comparer one IC1; The end of normally closed contact one J21 of output relay termination two J2 of comparer two IC2, another termination voltage meter positive input terminal of normally closed contact one J21.
The embodiment (see figure 2): the power supply function module comprises input voltage V1 and V2, is direct current 6-24V voltage, and the V1 electric current is 10mA-50A.3-10 watt of V2 power bracket.V1 mainly is that the size of power is relevant with the requirement of measured switch to measured switch, load and relay J 1 power supply.When measured switch required electric current big, the power that the V1 power supply is selected for use was big; Measured switch requires electric current hour, and the power that the V1 power supply is selected for use is littler.V2 mainly is to comparer IC, relay J 2 and triode T1 power supply.
Functional module to be measured: comprise measured switch K, amp gauge A and relay one J1, load and resistance one R1; Its measured switch K and amp gauge A series connection back are parallelly connected with resistance one R1; Relay one J1 and load are parallelly connected, and the two is cascaded is connected on power supply V1 two ends, after measured switch K connects; Electric current is connected relay one J1 through behind the amp gauge A; The normally opened contact J11, J12, J13 and the J14 that are relay one J1 connect simultaneously, and load is simultaneously also connected, and the electric current that this moment, amp gauge A showed is exactly the electric current on the measured switch K.
The voltage drop correction function module: with standard scale be connected on respectively corresponding calibration+and calibration-on; After measured switch K connects; Normally opened contact J11, J12, J13 and the J14 of relay one J1 connect standard scale respectively, through regulating the voltage drop that resistance one R1 proofreaies and correct measured switch K.
Voltage drop measuring ability module: voltage drop measuring ability module realizes through the window comparator that comparer one IC1 and comparer two IC2 form; The positive input terminal of comparer one IC1 positive input terminal and comparer two IC2 is connected together; Make voltage identical, magnitude of voltage obtains through resistance two R2, resistance three R3 and the resistance four R4 resistance adjustment that are connected on the power supply V2.Voltage drop value obtain through measured switch K two ends respectively through normally opened contact two J12 of relay one J1 to comparer one IC1 negative input end with through the normally opened contact four J14 normally opened contacts of relay one J1 positive input terminal to comparer one IC1, comparer two IC2; After comparer one IC1 handles; If comparer one IC1 positive input terminal voltage is higher than the voltage of negative input end, magnitude of voltage of comparer one IC1 output is given the negative terminal of voltage meter; If the positive input terminal voltage of comparer two IC2 is higher than negative input end voltage; Comparer two IC2 output voltage values are given the anode of voltage meter; The negative terminal voltage of comparer two IC2 is realized through the value of regulating resistance five R5; Make its magnitude of voltage not exceed the positive input terminal voltage of comparer two IC2, then the difference of comparer one IC1 output voltage and comparer two IC2 output voltages is exactly the voltage drop value of measured switch K.Be the value that voltage meter shows.
The defencive function module; The protection of the gauge outfit of voltage meter is regulated the voltage of comparer three IC3 positive input terminals through the value of regulating resistance six R6, thereby makes comparer three IC3 signal output arranged at voltage meter during near full scale, and comparer three IC3 output signal is connected triode T1; Relay two J2 are connected; Relay two normally closed contacts one J21 breaks off, and stops the power supply of voltage meter, reaches the purpose of protection.
The result judges the output function module, because measured switch K kind is different, in order to satisfy the versatility of the utility model, can handle back qualified signal of output and defective signal through processor ICB through regulating the value of resistance seven R7.Thereby the voltage drop acceptance or rejection signal of realizing measured switch K is judged by pick-up unit automatically, reduces artificial false judgment.
Claims (3)
1. switch with mechanical contact voltage drop pick-up unit; It comprises power supply function module, functional module to be measured and voltage drop measuring ability module; It is characterized in that: the power supply function module judges that with functional module to be measured, voltage drop measuring ability module, defencive function module, voltage drop correction function module and result output function module lead is connected; The defencive function module is connected with voltage drop measuring ability module lead; The voltage drop correction function module is electrically connected with functional module to be measured, and voltage drop measuring ability module judges that with the result output function module lead is connected.
2. a kind of switch with mechanical contact voltage drop pick-up unit according to claim 1, it is characterized in that: power supply function module for power supply scope is DC6-24V, electric current is 10mA-50A.
3. a kind of switch with mechanical contact voltage drop pick-up unit according to claim 1; It is characterized in that: voltage drop measuring ability module comprises resistance two (R2), resistance three (R3) and resistance four (R4); The power supply positive and negative terminal that it is cascaded and is connected on the power supply function module; Comparer one (IC1) negative input end is connected on the normally opened contact two (J12) of relay one (J1); The positive input terminal of comparer one (IC1) positive input terminal and comparer two (IC2) is connected between resistance two (R2) and the resistance four (R4); The negative input end of comparer two (IC2) is connected with resistance five (R5) and is attempted by power supply negative terminal; The output termination voltage meter negative input end of comparer one (IC1), an end of the normally closed contact one (J21) of the output relay termination two (J2) of comparer two (IC2), another termination voltage meter positive input terminal of normally closed contact one (J21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205546235U CN202372558U (en) | 2011-12-27 | 2011-12-27 | Voltage drop detection device for mechanical contact switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205546235U CN202372558U (en) | 2011-12-27 | 2011-12-27 | Voltage drop detection device for mechanical contact switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202372558U true CN202372558U (en) | 2012-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205546235U Expired - Fee Related CN202372558U (en) | 2011-12-27 | 2011-12-27 | Voltage drop detection device for mechanical contact switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202372558U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104123760A (en) * | 2014-06-26 | 2014-10-29 | 天津市松正电动汽车技术股份有限公司 | Electric vehicle signal acquisition circuit |
| CN106093531A (en) * | 2016-07-25 | 2016-11-09 | 华为技术有限公司 | A kind of chip dynamic voltage down detection circuit and detection method |
-
2011
- 2011-12-27 CN CN2011205546235U patent/CN202372558U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104123760A (en) * | 2014-06-26 | 2014-10-29 | 天津市松正电动汽车技术股份有限公司 | Electric vehicle signal acquisition circuit |
| CN106093531A (en) * | 2016-07-25 | 2016-11-09 | 华为技术有限公司 | A kind of chip dynamic voltage down detection circuit and detection method |
| CN106093531B (en) * | 2016-07-25 | 2019-02-26 | 华为技术有限公司 | A kind of chip dynamic voltage down detection circuit and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20181227 |