CN205263270U - Multiway switch series fault detection circuitry - Google Patents
Multiway switch series fault detection circuitry Download PDFInfo
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- CN205263270U CN205263270U CN201521107417.4U CN201521107417U CN205263270U CN 205263270 U CN205263270 U CN 205263270U CN 201521107417 U CN201521107417 U CN 201521107417U CN 205263270 U CN205263270 U CN 205263270U
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- variable connector
- failure detector
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Abstract
The utility model discloses a multiway switch series fault detection circuitry, its characterized in that: detection circuitry include that the switching element that high voltage power supply inserted a plurality of series connection inserts the load, voltage sample treatment circuit carries on sending entry control the unit with the judged result after the comparison is carried out with the benchmark value to the voltage sample to one of them cluster switch device. Since the above structure is adopted, the utility model discloses a protection is realized to the voltage of a set of switching element of taking a sample alone, has solved that the multiunit is taken a sample simultaneously, the loaded down with trivial details scheduling problem of multichannel high voltage isolation, trouble centralized processing, has simplified sample protect function, has also improved fault detection's accuracy and reliability greatly, optimizes the circuit performance of series switch subassembly.
Description
Technical field
The utility model relates to the fault detect while series connection for variable connector, particularly a kind of variable connectorSeries connection failure detector circuit.
Background technology
Along with making constant progress of semiconductor device art, solid switch device with its life-span length, low cost,The advantage ranges of application such as volume is little are more and more extensive, and corresponding application technology also reaches its maturity. But due at presentThe restriction of the indexs such as the electric current and voltage of single solid-state semiconductor device, often needs in practical application by string alsoThe mode that joint group closes, to meet the instructions for use of high voltage and large electric current.
When the series connection of variable connector device, owing to there is certain difference between single switch device, need to solveThe voltage conforming problem that distributes, otherwise can inconsistently cause whole tandem tap device whole owing to all pressingPuncture inefficacy, therefore adopt the failure detector circuit of tandem tap to be extremely necessary.
The fault detect of existing switching device series connection is to adopt multichannel sampling (each road samples separately), faultThe mode focusing on, this detection mode is often inconsistent due to the relative current potential of each switching device, needsSolve voltage isolating problem, realize circuit loaded down with trivial details, and due to the inconsistency of each testing circuit parameter,Easily cause fault misdescription, accuracy is poor.
For the problems referred to above, a kind of novel testing circuit is provided, realize the accurate of variable connector series connection faultDetect.
Utility model content
Technical problem to be solved in the utility model is, a kind of variable connector series connection failure detector circuit is provided,Realize the accurate detection of variable connector series connection fault.
For achieving the above object, the technical solution of the utility model is, a kind of variable connector series connection fault detectCircuit, is characterized in that: described testing circuit comprises that the switching device that high voltage source accesses multiple series connection connectsEnter load, voltage sampling treatment circuit carries out voltage sampling to one group of switching device wherein, and enters with a reference valueRow is sent judged result into control module more afterwards.
Described voltage sampling treatment circuit adopts the form of optical signal that judged result is sent into control module.
Described voltage sampling treatment circuit comprises that voltage sampling resistor R01 and R02 are parallel on switching device, electricityThe sampling voltage Vsamp that resistance R01 and the two tie point of R02 are corresponding accesses comparator N1 through resistance R 03; ElectricitySource VCC produces reference voltage by resistance R 04, R05, R06, R07 and sends into comparator N1.
Described comparator N1 is connected with optical device N2 (HFBR1414), and optical device N2 is by resistance R 08VCC is connected with power supply.
The resistance of described sample resistance R01, R02 be connected in parallel on resistance R n two ends after equivalent resistance consistent.
A kind of variable connector series connection failure detector circuit, owing to adopting foregoing circuit, the utility model is by singleSolely the voltage of one group of switching device of sampling is realized protection, solved many groups sample simultaneously, the isolation of multichannel high pressure,The problem such as it is loaded down with trivial details that fault focuses on, simplified sampling defencive function, also greatly improved fault detectAccuracy and reliability, the circuit performance of optimization tandem tap assembly.
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 the composition schematic diagram of a kind of variable connector series connection of the utility model failure detector circuit;
Fig. 2 is the circuit diagram of a kind of variable connector series connection of the utility model failure detector circuit;
In Fig. 1,1, high voltage source; 2, switching device; 3, voltage sampling treatment circuit; 4, controlUnit; 5, load.
Detailed description of the invention
The utility model utilizes the static state voltage equipoise circuit in tandem tap application, only to wherein one group carry out voltageSampling, compares according to sampling voltage value and a reference value, judges in tandem tap assembly by hardware circuitWhether occur that overvoltage causes single tube punch-through, the form that wherein judged result of hardware circuit can optical signalDirectly deliver to control system, realize failure protection function. It is multiple that the utility model comprises that high voltage source 1 accessesThe switching device 2 of series connection accesses load 5, and voltage sampling treatment circuit 3 carries out one group of switching device 2 whereinAfter voltage sampling and a reference value compare, judged result is sent into control module 4. Voltage sampling treatment circuit 3Adopt the form of optical signal that judged result is sent into control module 4.
Specifically as shown in Figure 1, the circuit of switching device 2 includes the switching device (V1～Vn) of multiple series connectionComposition, each switching device 2 is parallel with the static voltage sharing (R1～Rn=R) of improve parameter unification, described electricityAfter pressing sampled signal via signal processing circuit, feed back to control module by the mode of optical signal, it is right to realizeThe protection of switch module.
Voltage sampling treatment circuit 3 comprises voltage sampling resistor R01 and R02, the two tie point corresponding sampleVoltage Vsamp is connected with 5 pin and 6 pin of comparator N1 (LM339) through resistance R 03, describedPower supply VCC is connected with resistance R 04, the other end of resistance R 04 and resistance R 05 and comparator N1(LM339) 4 pin are connected, and the voltage that described tie point is corresponding is Vref1, another termination of resistance R 05Ground, described power supply VCC is connected with resistance R 06, the other end of resistance R 06 and resistance R 07 and ratioBe connected compared with 7 pin of device N1 (LM339), the voltage that described tie point is corresponding is Vref2, resistance R 07Other end ground connection, 2 pin of described comparator N1 (LM339) are connected with 1 pin, and with optical device N2(HFBR1414) 3 pin are connected, and 2,6,7 pin of optical device N2 (HFBR1414) pass through resistanceR08 is connected with power supply VCC.
The switching device 2 (V1～Vn) of series connection is not when triggering and conducting, and high direct voltage signal is through equalizing resistanceR1～Rn and load form loop, and resistance R 01～R02 realizes the voltage sampling to switch Vn, sampling voltageSignal Vsamp is passed to 5 pin and 7 pin of comparator N1 (LM339), resistance R 04～R07 by resistance R 03Realize the dividing potential drop to low-tension supply Vcc, obtain voltage reference Vref1 and Vref2 (Vref1 < Vref2).
In the time of voltage sampling signal Vsamp < Vref1, the 2 pin output low levels of comparator N1 (LM339),The optical fiber N2 (HFBR-1414) that makes a start is luminous, and switching device Vn abnormal (puncturing) is described.
In the time of voltage sampling signal Vref1 < Vsamp < Vref2,2 pin and 1 of comparator N1 (LM339)Pin output high level, the optical fiber N2 (HFBR1414) that makes a start is unglazed, illustrates that switching device V1～Vn is normal.
In the time of voltage sampling signal Vref2 < Vsamp, the 2 pin output high level of comparator N1 (LM339),The 1 pin output low level of N1 (LM339), the optical fiber N2 (HFBR1414) that makes a start is luminous, and switch is describedDevice V2～Vn abnormal (having a damage at least).
Requirement to some extent when the resistance of sample resistance R01～R02 is chosen, should meet and be connected in parallel on behind resistance R n two endsEquivalence resistance is consistent with R01～R02, guarantees all to press effect.
By reference to the accompanying drawings the utility model is exemplarily described above, obviously the utility model specific implementationBe not subject to the restrictions described above, if the various improvement that adopted technical solutions of the utility model to carry out, orDirectly apply to other occasion without improvement, all within protection domain of the present utility model.
Claims (5)
1. a variable connector series connection failure detector circuit, is characterized in that: described testing circuit comprises heightVoltage source (1) accesses switching device (2) the access load (5) of multiple series connection, voltage sampling treatment circuit(3) to one group of switching device (2) wherein carry out voltage sampling and a reference value compare after by judged resultSend into control module (4).
2. a kind of variable connector series connection failure detector circuit according to claim 1, is characterized in that:Described voltage sampling treatment circuit (3) adopts the form of optical signal that judged result is sent into control module (4).
3. a kind of variable connector series connection failure detector circuit according to claim 1, is characterized in that:Described voltage sampling treatment circuit comprises that voltage sampling resistor R01 and R02 are parallel on switching device, resistanceThe sampling voltage Vsamp that the two tie point of R01 and R02 is corresponding accesses comparator N1 through resistance R 03; Power supplyVCC produces reference voltage by resistance R 04, R05, R06, R07 and sends into comparator N1.
4. according to a kind of variable connector series connection failure detector circuit described in claim 2 or 3, it is characterized in that:Described comparator N1 is connected with optical device N2, and optical device N2 is connected with power supply VCC by resistance R 08.
5. a kind of variable connector series connection failure detector circuit according to claim 3, is characterized in that:The resistance of described sample resistance R01, R02 be connected in parallel on resistance R n two ends after equivalent resistance consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521107417.4U CN205263270U (en) | 2015-12-25 | 2015-12-25 | Multiway switch series fault detection circuitry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521107417.4U CN205263270U (en) | 2015-12-25 | 2015-12-25 | Multiway switch series fault detection circuitry |
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| Publication Number | Publication Date |
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| CN205263270U true CN205263270U (en) | 2016-05-25 |
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| CN201521107417.4U Active CN205263270U (en) | 2015-12-25 | 2015-12-25 | Multiway switch series fault detection circuitry |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788363A (en) * | 2017-01-11 | 2017-05-31 | 惠州祺瑞电工有限公司 | A kind of electronic time-delay switch of achievable fault diagnosis |
| CN108646164A (en) * | 2018-07-26 | 2018-10-12 | 大力电工襄阳股份有限公司 | High-pressure thyristor on-Line Monitor Device |
| CN108845238A (en) * | 2018-07-26 | 2018-11-20 | 大力电工襄阳股份有限公司 | High-pressure thyristor on-Line Monitor Device and multiple groups high-pressure thyristor monitoring device |
| CN111245045A (en) * | 2018-11-29 | 2020-06-05 | 丰田自动车株式会社 | Power supply system |
| CN112379205A (en) * | 2020-11-18 | 2021-02-19 | 东风汽车集团有限公司 | Electrical matching performance test system and test method thereof |
-
2015
- 2015-12-25 CN CN201521107417.4U patent/CN205263270U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788363A (en) * | 2017-01-11 | 2017-05-31 | 惠州祺瑞电工有限公司 | A kind of electronic time-delay switch of achievable fault diagnosis |
| CN106788363B (en) * | 2017-01-11 | 2023-11-17 | 惠州祺瑞电工有限公司 | Electronic time delay switch capable of realizing fault diagnosis |
| CN108646164A (en) * | 2018-07-26 | 2018-10-12 | 大力电工襄阳股份有限公司 | High-pressure thyristor on-Line Monitor Device |
| CN108845238A (en) * | 2018-07-26 | 2018-11-20 | 大力电工襄阳股份有限公司 | High-pressure thyristor on-Line Monitor Device and multiple groups high-pressure thyristor monitoring device |
| CN111245045A (en) * | 2018-11-29 | 2020-06-05 | 丰田自动车株式会社 | Power supply system |
| CN111245045B (en) * | 2018-11-29 | 2023-08-04 | 丰田自动车株式会社 | Power supply system |
| CN112379205A (en) * | 2020-11-18 | 2021-02-19 | 东风汽车集团有限公司 | Electrical matching performance test system and test method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |