CN203838302U - Fault detection system for charge-discharge circuit - Google Patents
Fault detection system for charge-discharge circuit Download PDFInfo
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- CN203838302U CN203838302U CN201320780226.9U CN201320780226U CN203838302U CN 203838302 U CN203838302 U CN 203838302U CN 201320780226 U CN201320780226 U CN 201320780226U CN 203838302 U CN203838302 U CN 203838302U
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- door
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- voltage comparator
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- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 230000035945 sensitivity Effects 0.000 abstract description 8
- 238000005070 sampling Methods 0.000 abstract description 5
- 238000007796 conventional method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a fault detection system for a charge-discharge circuit, and a synchronization pulse signal is connected with the input end of a controller. A reference signal and a sampling signal are connected with a comparison circuit at the same time. The comparison circuit is connected with the controller through a triggering circuit. The comparison circuit is connected with a fault processing device through a logic processing circuit. The controller is connected with the fault processing device through the logic processing circuit. The system employs a simple circuit and achieves the detection of two faults of the non-operating of a trigger switch and the short circuit of a charging load, and greatly simplifies a conventional method. The system is adjustable in sensitivity and is suitable for occasions with different demands. The sensitivity is adjusted through adjusting the target value of a counter, so the system is convenient and reliable. Moreover, the system is lower in cost.
Description
Technical field
The utility model relates to high-power charge-discharge circuit field, particularly a kind of fault detection system for high-power charge-discharge circuit.
Background technology
In high-power charge-discharge circuit, its protection system often need to detect and protect some faults, and wherein important have trigger switch be failure to actuate fault, a charging load short trouble etc.
Traditional way is that two kinds of faults are detected respectively: for the trigger switch fault of being failure to actuate, the electric current or the voltage waveform that conventionally reality are triggered are sampled, and is judged as trigger switch and is failure to actuate in the time of sampling disappearance; For charging load short trouble, voltage and the benchmark of the charging load of generally sampling compare, and charging does not reach value and is judged as load short circuits.
Traditional fault detection method problem is: the trigger switch failure detector circuit of being failure to actuate is comparatively complicated, and if trigger voltage very high, also need to use high pressure bleeder circuit; The negative short trouble testing circuit of charging is realized also more difficult, and judgement does not reach easily wrong report of value.And the sensitivity of these two kinds of fault detection methods all can not regulate very easily.
Utility model content
Technical problem to be solved in the utility model is, a kind of fault detection system of charge-discharge circuit is provided, and detects to reach that trigger switch is failure to actuate and the object of two kinds of faults of charging load short circuit simultaneously.
For achieving the above object, the technical solution of the utility model is, a kind of fault detection system of charge-discharge circuit, comprise synchronization pulse, reference signal, sampled signal, described synchronization pulse is connected with the input end of controller, described reference signal is connected with comparator circuit with sampled signal simultaneously, described comparator circuit is connected with controller by trigger circuit, described comparator circuit is connected with fault treating apparatus by logic processing circuit, and described controller is connected with fault treating apparatus by logic processing circuit.
Described comparator circuit is voltage comparator, trigger circuit are trigger, described reference signal is connected with the input end of voltage comparator with sampled signal, and the output terminal of voltage comparator is connected with the input end of trigger, and the output terminal of described voltage comparator is connected with logic processing circuit.
Described logic processing circuit by not gate D1, with door a D2, with door a D3 form, the output terminal of described controller is connected respectively with door D2 with the input end of door D3, the output terminal of described voltage comparator be connected with the input end of door D3, the output terminal of described voltage comparator is connected with the input end of not gate D1, the output terminal of not gate D1 be connected with the input end of door D2, described is all connected with fault treating apparatus with door D2 with the output terminal of door D3.
Described controller is counter, and described voltage comparator is connected with the reset terminal of counter by trigger, and synchronization pulse is directly connected with the counting end of counter.
Described trigger is monostalbe trigger.
A kind of fault detection system of charge-discharge circuit, synchronization pulse is connected with the input end of controller, described reference signal is connected with comparator circuit with sampled signal simultaneously, described comparator circuit is connected with controller by trigger circuit, described comparator circuit is connected with fault treating apparatus by logic processing circuit, described controller is connected with fault treating apparatus by logic processing circuit, use simple circuit to realize that trigger switch is failure to actuate, the detection of two kinds of faults of charging load short circuit simultaneously, significantly simplify the circuit of classic method; Sensitivity can regulate, and is applicable to the occasion of different demands; Carry out adjustment of sensitivity by the desired value that regulates counter, convenient and reliable; Cost is lower.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model;
In Fig. 1,1, controller; 2, trigger; 3, voltage comparator; 4, fault treating apparatus.
Embodiment
A kind of fault detection system of charge-discharge circuit as shown in Figure 1, comprise synchronization pulse, reference signal, sampled signal, described synchronization pulse is connected with the input end of controller, and described reference signal is connected with comparator circuit with sampled signal simultaneously, and described comparator circuit is connected with controller by trigger circuit, described comparator circuit is connected with fault treating apparatus by logic processing circuit, and described controller is connected with fault treating apparatus by logic processing circuit.
Described comparator circuit is voltage comparator, trigger circuit are trigger, described reference signal is connected with the input end of voltage comparator with sampled signal, and the output terminal of voltage comparator is connected with the input end of trigger, and the output terminal of described voltage comparator is connected with logic processing circuit.
Described logic processing circuit by not gate D1, with door a D2, with door a D3 form, the output terminal of described controller is connected respectively with door D2 with the input end of door D3, the output terminal of described voltage comparator be connected with the input end of door D3, the output terminal of described voltage comparator is connected with the input end of not gate D1, the output terminal of not gate D1 be connected with the input end of door D2, described is all connected with fault treating apparatus with door D2 with the output terminal of door D3.
Described controller is counter, and described voltage comparator is connected with the reset terminal of counter by trigger, and synchronization pulse is directly connected with the counting end of counter.
Described trigger is monostalbe trigger.
Detect hour counter synchronization pulse is counted, generate a reset signal to counter always make count value zero clearing in the time of normal work, stop the input of reset signal in the time that fault occurs, at this moment count value increases.If fault recurs, count value can continue to increase.Count value is set in software and reaches certain default value hour counter output high level, can realize judgement and the protection of two kinds of different faults in conjunction with the output level of voltage comparator now.
Reference signal, voltage sampling signal access counter by trigger 2 after accessing voltage comparator 3 simultaneously; Synchronization pulse directly accesses counter, the output access of the output terminal of counter and voltage comparator 3 and door D3, and the output terminal of counter and voltage comparator 3 are through the reverse signal access and door D2 of not gate D1.
Voltage comparator 3 accesses the reset terminal of counter by trigger 2, synchronization pulse directly accesses the counting end of counter.
Trigger is monostalbe trigger.
Synchronization pulse is directly inputted to the counting end of counter; The voltage sampling signal of detected charge-discharge circuit load is input to voltage comparator 3, and voltage comparator 3 is connected with trigger 2, and the pulse shaping circuit that trigger 2 triggers as negative edge is input to the reset terminal of counter.
In trouble-free situation, the normal output voltage that reference signal is not more than circuit is set makes the output of voltage comparator 3 according to the timing synchronization upset of high-power charge-discharge circuit, the output terminal of trigger 2 is exported with the reset signal of high-power charge-discharge circuit timing synchronization to counter always, counter is zero clearing always, be output as low level, two is all just also low level with the output of door D2, D3.
When charge-discharge circuit occurs when abnormal, be divided into that trigger switch is failure to actuate and two kinds of situations of charging load short circuit.
In the time there is the fault that trigger switch is failure to actuate, the electricity being full of in load cannot discharge, and remains on the voltage being full of always, and the output of voltage comparator 3 is low level state always.The input end of trigger 2 does not have to make the negative edge of its triggering, does not just have output yet.Counter does not receive reset signal, and counter starts to count according to synchronization pulse.When after the default desired value of reaching through value of counter; counter output becomes high level; because the output of voltage comparator 3 is low always; not gate D1 is output as height; with door D2 output high level; can be used for judging the situation that trigger switch is failure to actuate, coordinate fault treating apparatus 4 to reach the effect of protection.
In the time of the fault of charging load short circuit, in load, cannot fill electricity with, the output of voltage comparator 3 is high level state always.The input end of trigger 2 does not still make the negative edge of its triggering, does not have output.Counter can not receive reset signal, counts equally according to synchronization pulse.When after the default desired value of reaching through value of counter; counter output becomes high level, because the output of voltage comparator 3 is high always, with door D3 output high level; just can be used for judging the situation of charging load short circuit, coordinate fault treating apparatus 4 to reach the effect of protection.
If need to regulate the sensitivity detecting, only need to revise the goal-selling value of counter in program, and can control accurately the number of the situation that breaks down continuously.Said structure can simply be realized circuit that trigger switch is failure to actuate, the detection of two kinds of faults of charging load short circuit simultaneously, significantly simplifies the circuit of classic method; Sensitivity can regulate, and is applicable to the occasion of different demands; Carry out adjustment of sensitivity by the desired value that regulates counter, convenient and reliable; Cost is lower.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as the various improvement that adopted technical solutions of the utility model to carry out; or directly apply to other occasion without improvement, all within protection domain of the present utility model.
Claims (5)
1. the fault detection system of a charge-discharge circuit, comprise synchronization pulse, reference signal, sampled signal, it is characterized in that: described synchronization pulse is connected with the input end of controller (1), described reference signal is connected with comparator circuit with sampled signal simultaneously, described comparator circuit is connected with controller by trigger circuit, described comparator circuit is connected with fault treating apparatus by logic processing circuit, and described controller is connected with fault treating apparatus (4) by logic processing circuit.
2. the fault detection system of a kind of charge-discharge circuit according to claim 1, it is characterized in that: described comparator circuit is voltage comparator (3), trigger circuit are trigger (2), described reference signal is connected with the input end of voltage comparator (3) with sampled signal, the output terminal of voltage comparator (3) is connected with the input end of trigger (2), and the output terminal of described voltage comparator (3) is connected with logic processing circuit.
3. the fault detection system of a kind of charge-discharge circuit according to claim 2, it is characterized in that: described logic processing circuit is by not gate D1, with door D2, form with door D3, the output terminal of described controller (1) is connected respectively with door D2 with the input end of door D3, the output terminal of described voltage comparator (3) be connected with the input end of door D3, the output terminal of described voltage comparator (3) is connected with the input end of not gate D1, the output terminal of not gate D1 be connected with the input end of door D2, described is all connected with fault treating apparatus (4) with door D2 with the output terminal of door D3.
4. according to the fault detection system of a kind of charge-discharge circuit described in claim 2 or 3, it is characterized in that: described controller (1) is counter, described voltage comparator (3) is connected with the reset terminal of counter by trigger, and synchronization pulse is directly connected with the counting end of counter.
5. according to the fault detection system of a kind of charge-discharge circuit described in claim 2 or 3, it is characterized in that: described trigger (2) is monostalbe trigger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320780226.9U CN203838302U (en) | 2013-11-30 | 2013-11-30 | Fault detection system for charge-discharge circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320780226.9U CN203838302U (en) | 2013-11-30 | 2013-11-30 | Fault detection system for charge-discharge circuit |
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| Publication Number | Publication Date |
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| CN203838302U true CN203838302U (en) | 2014-09-17 |
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| CN201320780226.9U Expired - Lifetime CN203838302U (en) | 2013-11-30 | 2013-11-30 | Fault detection system for charge-discharge circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652562A (en) * | 2016-03-31 | 2016-06-08 | 中国工程物理研究院流体物理研究所 | Flashometer capable of preventing high-speed photography image loss and design method thereof |
| CN106325265A (en) * | 2016-10-27 | 2017-01-11 | 山东省科学院自动化研究所 | Fault diagnosis circuit and method of vehicle control module |
| CN107786077A (en) * | 2017-12-08 | 2018-03-09 | 深圳瑞丰恒激光技术有限公司 | A kind of Q-switch driving power controller failure detection means and method |
| CN109425642A (en) * | 2017-08-28 | 2019-03-05 | 上海花小二科技有限公司 | Dedicated processes chip based on electrode method testing soil moisture |
-
2013
- 2013-11-30 CN CN201320780226.9U patent/CN203838302U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652562A (en) * | 2016-03-31 | 2016-06-08 | 中国工程物理研究院流体物理研究所 | Flashometer capable of preventing high-speed photography image loss and design method thereof |
| CN105652562B (en) * | 2016-03-31 | 2018-04-03 | 中国工程物理研究院流体物理研究所 | A kind of stroboscope for preventing High Speed Photography Images from losing and design method |
| CN106325265A (en) * | 2016-10-27 | 2017-01-11 | 山东省科学院自动化研究所 | Fault diagnosis circuit and method of vehicle control module |
| CN106325265B (en) * | 2016-10-27 | 2019-01-22 | 山东省科学院自动化研究所 | A kind of method for diagnosing faults of automobile body control module |
| CN109425642A (en) * | 2017-08-28 | 2019-03-05 | 上海花小二科技有限公司 | Dedicated processes chip based on electrode method testing soil moisture |
| CN107786077A (en) * | 2017-12-08 | 2018-03-09 | 深圳瑞丰恒激光技术有限公司 | A kind of Q-switch driving power controller failure detection means and method |
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