CN104775961A - Fault detection circuit for line fault of solenoid valve - Google Patents
Fault detection circuit for line fault of solenoid valve Download PDFInfo
- Publication number
- CN104775961A CN104775961A CN201510146494.9A CN201510146494A CN104775961A CN 104775961 A CN104775961 A CN 104775961A CN 201510146494 A CN201510146494 A CN 201510146494A CN 104775961 A CN104775961 A CN 104775961A
- Authority
- CN
- China
- Prior art keywords
- solenoid valve
- fault
- circuit
- comparator
- check processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a fault detection circuit for a line fault of a solenoid valve and belongs to the technical field of fault detection of the solenoid valve. The invention adopts the following technical scheme: the fault detection circuit for the line fault of the solenoid valve is characterized by comprising a low end detection processing circuit, a high end detection processing circuit and a solenoid valve work indication circuit. The fault detection circuit can perform fast and accurate fault judgment according to drive current features of the fault solenoid valve, and can identify the line faults such as short circuit and open circuit of the solenoid valve.
Description
Technical field
The present invention relates to a kind of fault-detecting circuit for solenoid valve line fault, belong to solenoid valve failure detection technique field.
Background technique
In Design of High Pressure Common Rail Diesel Engine fuel injection system, solenoid valve is one of core component of whole system, and the quality of magnetic valve performance will directly affect motor and vehicle performance.Therefore, its performance must be detected in real time in solenoid-driven process, once dysfunction, corresponding failure process and protection should be carried out in time, spread further to prevent fault.Solenoid valve line fault, if solenoid valve wire harness is due to reasons such as vibration, wearing and tearing, cause the mutual short circuit of solenoid valve internal short-circuit, solenoid valve, the high-end shorted to earth of solenoid valve, solenoid valve low side shorted to earth, solenoid valve low side high-end to faults such as power supply short circuits to power supply short circuit, solenoid valve, and when solenoid valve breaks down, driving current or the rate of climb in solenoid-driven loop change, or larger change occurs current value.
Summary of the invention
The object of this invention is to provide a kind of fault-detecting circuit for solenoid valve line fault, overcome the defect of prior art, carry out fault diagnosis by the driving current feature detecting solenoid valve, solve the technical problem that solenoid valve failure detects.
The present invention adopts following technological scheme: a kind of fault-detecting circuit for solenoid valve line fault, is characterized in that, comprises low side check processing circuit, high-end check processing circuit, electromagnetic valve work indicating circuit.
Preferably, described low side check processing circuit comprises an operational amplifier, multiple gain resistor, a comparator, and described operational amplifier is connected with described comparator.
Preferably, described operational amplifier adopts differential input, effectively can suppress common mode disturbances, improves the sampling precision of signal.
Preferably, high-end check processing circuit comprises power amplifier, comparator, and described power amplifier is connected with described comparator.
Preferably, described power amplifier comprises two triode series connection, and then is connected with one end of described comparator.
Preferably, described electromagnetic valve work indicating circuit is used for indirectly judging whether solenoid valve open circuit fault occurs; If exporting has logic to change, then represent and solenoid valve has current signal to flow through; If export always low, represent solenoid valve generation open circuit fault.
The beneficial effect that the present invention reaches: breakdown judge fast and accurately can be carried out according to fault electromagnetic valve driving current feature, the line faults such as the short circuit of solenoid valve, open circuit can be identified.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of low side check processing circuit of the present invention.
Fig. 2 is the schematic diagram of high-end check processing circuit of the present invention.
Fig. 3 is the schematic diagram of electromagnetic valve work indicating circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.Following examples only for technological scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
The present invention proposes a kind of fault-detecting circuit for solenoid valve line fault, it is characterized in that, comprises low side check processing circuit, high-end check processing circuit, electromagnetic valve work indicating circuit.
The schematic diagram of low side check processing circuit as of the present invention in Fig. 1, low side check processing circuit comprises an operational amplifier, multiple gain resistor (R
v, R
f, R, RS), a comparator, operational amplifier is connected with comparator, and described operational amplifier adopts differential input, effectively can suppress common mode disturbances, improve the sampling precision of signal, if driving current exceeds threshold threshold values, output signal LI overturns with regard to occurrence logic.
As the schematic diagram that Fig. 2 is high-end check processing circuit of the present invention, high-end check processing circuit comprises power amplifier, comparator, power amplifier is connected with comparator, power amplifier comprises two triode series connection, and then be connected with one end of comparator, if driving current exceeds threshold threshold values, output signal HI overturns with regard to occurrence logic.
As the schematic diagram that Fig. 3 is electromagnetic valve work indicating circuit of the present invention, electromagnetic valve work indicating circuit is used for indirectly judging whether solenoid valve open circuit fault occurs; If output signal SO has logic to change, then represent and solenoid valve has current signal to flow through; If SO is always low for output signal, represent solenoid valve generation open circuit fault.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.
Claims (6)
1. for a fault-detecting circuit for solenoid valve line fault, it is characterized in that, comprise low side check processing circuit, high-end check processing circuit, electromagnetic valve work indicating circuit.
2. a kind of fault-detecting circuit for solenoid valve line fault according to claim 1, it is characterized in that, described low side check processing circuit comprises an operational amplifier, multiple gain resistor, a comparator, and described operational amplifier is connected with described comparator.
3. a kind of fault-detecting circuit for solenoid valve line fault according to claim 2, it is characterized in that, described operational amplifier adopts differential input, effectively can suppress common mode disturbances, improves the sampling precision of signal.
4. a kind of fault-detecting circuit for solenoid valve line fault according to claim 1, is characterized in that, high-end check processing circuit comprises power amplifier, comparator, and described power amplifier is connected with described comparator.
5. a kind of fault-detecting circuit for solenoid valve line fault according to claim 4, is characterized in that, described power amplifier comprises two triode series connection, and then is connected with one end of described comparator.
6. a kind of fault-detecting circuit for solenoid valve line fault according to claim 1, is characterized in that, described electromagnetic valve work indicating circuit is used for indirectly judging whether solenoid valve open circuit fault occurs; If exporting has logic to change, then represent and solenoid valve has current signal to flow through; If export always low, represent solenoid valve generation open circuit fault.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510146494.9A CN104775961A (en) | 2015-03-31 | 2015-03-31 | Fault detection circuit for line fault of solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510146494.9A CN104775961A (en) | 2015-03-31 | 2015-03-31 | Fault detection circuit for line fault of solenoid valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104775961A true CN104775961A (en) | 2015-07-15 |
Family
ID=53617654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510146494.9A Pending CN104775961A (en) | 2015-03-31 | 2015-03-31 | Fault detection circuit for line fault of solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104775961A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158626A (en) * | 2015-08-14 | 2015-12-16 | 中国船舶工业系统工程研究院 | Signal detection circuit for ocean engineering equipment |
| CN106015703A (en) * | 2016-07-28 | 2016-10-12 | 湖南凯杰科技有限责任公司 | Electromagnetic valve drive system |
| CN107167694A (en) * | 2017-06-07 | 2017-09-15 | 惠州市德赛西威汽车电子股份有限公司 | A kind of magnetic valve earth fault detection circuit of automobile outer control variable displacement compressor |
| CN108226690A (en) * | 2016-12-21 | 2018-06-29 | 国家无线电监测中心检测中心 | Detection circuit |
| CN109342919A (en) * | 2018-09-27 | 2019-02-15 | 北京理工大学 | A kind of fault diagnosis system and method for automobile-used Drive Circuit for Injector Solenoid Valve |
| CN110043456A (en) * | 2019-05-30 | 2019-07-23 | 中防工程科技有限公司 | A kind of anti-corrosion air compressor unloading valve safety monitoring device |
| CN111504168A (en) * | 2020-04-28 | 2020-08-07 | 上海深拓液压技术有限公司 | Solenoid valve fault detection circuit capable of deducing displacement change through inductance change |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3315503C1 (en) * | 1983-04-28 | 1984-05-03 | Daimler-Benz Ag, 7000 Stuttgart | Test arrangement for high-pressure injection valves |
| US20070090315A1 (en) * | 2005-10-20 | 2007-04-26 | Siemens Ag | Method for checking a valve |
| CN101294534A (en) * | 2007-04-26 | 2008-10-29 | 无锡油泵油嘴研究所 | Solenoid valve diagnosis detecting method and device for electric-controlled co-rail fuel feed pump |
| CN102182603A (en) * | 2011-05-24 | 2011-09-14 | 浙江大学 | Fault diagnosis device and method for high-pressure common-rail fuel injection system |
| CN202300765U (en) * | 2011-10-25 | 2012-07-04 | 浙江大学 | Fault diagnosis device of automobile electromagnetic valve |
-
2015
- 2015-03-31 CN CN201510146494.9A patent/CN104775961A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3315503C1 (en) * | 1983-04-28 | 1984-05-03 | Daimler-Benz Ag, 7000 Stuttgart | Test arrangement for high-pressure injection valves |
| US20070090315A1 (en) * | 2005-10-20 | 2007-04-26 | Siemens Ag | Method for checking a valve |
| CN101294534A (en) * | 2007-04-26 | 2008-10-29 | 无锡油泵油嘴研究所 | Solenoid valve diagnosis detecting method and device for electric-controlled co-rail fuel feed pump |
| CN102182603A (en) * | 2011-05-24 | 2011-09-14 | 浙江大学 | Fault diagnosis device and method for high-pressure common-rail fuel injection system |
| CN202300765U (en) * | 2011-10-25 | 2012-07-04 | 浙江大学 | Fault diagnosis device of automobile electromagnetic valve |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158626A (en) * | 2015-08-14 | 2015-12-16 | 中国船舶工业系统工程研究院 | Signal detection circuit for ocean engineering equipment |
| CN106015703A (en) * | 2016-07-28 | 2016-10-12 | 湖南凯杰科技有限责任公司 | Electromagnetic valve drive system |
| CN108226690A (en) * | 2016-12-21 | 2018-06-29 | 国家无线电监测中心检测中心 | Detection circuit |
| CN107167694A (en) * | 2017-06-07 | 2017-09-15 | 惠州市德赛西威汽车电子股份有限公司 | A kind of magnetic valve earth fault detection circuit of automobile outer control variable displacement compressor |
| CN109342919A (en) * | 2018-09-27 | 2019-02-15 | 北京理工大学 | A kind of fault diagnosis system and method for automobile-used Drive Circuit for Injector Solenoid Valve |
| CN109342919B (en) * | 2018-09-27 | 2019-12-27 | 北京理工大学 | Fault diagnosis system and method for electromagnetic valve driving circuit of vehicle oil sprayer |
| CN110043456A (en) * | 2019-05-30 | 2019-07-23 | 中防工程科技有限公司 | A kind of anti-corrosion air compressor unloading valve safety monitoring device |
| CN111504168A (en) * | 2020-04-28 | 2020-08-07 | 上海深拓液压技术有限公司 | Solenoid valve fault detection circuit capable of deducing displacement change through inductance change |
| CN111504168B (en) * | 2020-04-28 | 2022-02-01 | 上海深拓液压技术有限公司 | Solenoid valve fault detection circuit capable of deducing displacement change through inductance change |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104775961A (en) | Fault detection circuit for line fault of solenoid valve | |
| US20160238484A1 (en) | Method for detecting a failure in a fuel return valve of an aircraft engine fuel circuit | |
| CN104849644B (en) | IGBT condition detection circuit and IGBT condition detection methods | |
| CN210129024U (en) | Load diagnosis device | |
| CN104062538A (en) | Method for monitoring short circuit and circuit break of vehicle-mounted relay or contactor coil | |
| CN206900239U (en) | Car light controller, vehicle lamp assembly, car light fault monitoring system and vehicle | |
| CN110072737A (en) | On-vehicle control apparatus | |
| CN104535856A (en) | Magnetorheology damper failure and fault detecting method | |
| CN110907813A (en) | Diagnosis method for relay in battery management system | |
| CN104553810A (en) | Battery safety device for vehicle and method of detecting failure thereof | |
| CN205101158U (en) | A failure detector circuit for solenoid valve line fault | |
| CN104455392B (en) | Diagnosis device for transmission hydraulic module | |
| CN104113042B (en) | leakage protection device and method | |
| CN104236594B (en) | Safety edge state detection circuit | |
| CN103701444A (en) | Power driving circuit with hard real-time overcurrent protection function | |
| CN103412180A (en) | Overcurrent detection circuit | |
| CN103731018B (en) | Inversion module driving protection device | |
| CN103116122B (en) | A kind of power cell testing circuit, series circuit and bypass detecting system | |
| CN203025235U (en) | Voltage state detection circuit of output channel | |
| CN104373662A (en) | Method and device for controlling electromagnetic valves | |
| CN104391197A (en) | Electromagnet fault detection method and circuit, control method and circuit and circuit breaker | |
| CN109932673A (en) | A kind of transformer disconnection detection circuit of breaker | |
| CN109738671B (en) | Acceleration sensor self-checking circuit | |
| CN203516968U (en) | Smart valve with functions of automatic detection and breakdown elimination | |
| CN203287033U (en) | Automotive electronic control unit self-diagnostic sensor signal detection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150715 |
|
| RJ01 | Rejection of invention patent application after publication |