CN205246801U - Fault detection device - Google Patents
Fault detection device Download PDFInfo
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- CN205246801U CN205246801U CN201521118543.XU CN201521118543U CN205246801U CN 205246801 U CN205246801 U CN 205246801U CN 201521118543 U CN201521118543 U CN 201521118543U CN 205246801 U CN205246801 U CN 205246801U
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Abstract
The utility model discloses a fault detection device, including sampling circuit, treatment circuit and control simulation drive circuit, wherein, sampling circuit, input are connected with mutual -inductor terminal, control simulation drive circuit respectively, gather and come from the signal of telecommunication of mutual -inductor terminal or control simulation drive circuit's the signal of telecommunication, the treatment circuit, acquire and analysis sampling circuit gathers comes from the signal of telecommunication of mutual -inductor terminal to export corresponding control signal, or acquire and analysis sampling circuit gathers comes from control simulation drive circuit's the signal of telecommunication to export corresponding fault indication signal, control simulation drive circuit is according to the signal of telecommunication of control signal output and mutual -inductor output with analog signal frequently. The wiring trouble of utilizing this fault detection device can discover the mutual -inductor in time avoids leading to the measuring result of the system of measurationing inaccurate, protection system loses kickback such as guard action.
Description
Technical field
The utility model relates to electric circuit inspection technical field, is specifically related to a kind of failure detector.
Background technology
Transformer (instrumenttransformer) is called again instrument transformer, is Current Mutual InductanceThe general designation of device and voltage transformer. High voltage can be become to low-voltage, large electric current becomes little electric current, useIn measuring or protection system. Its function is mainly that high voltage or large electric current scaling transformation are become to low-voltage(for example 100V, or lower) or little electric current (for example 5A or 1A, or less), in addition, alsoCan detect residual current, larger residual current (for example 1A or 2A) scaling transformation is becomeLittle residual current (for example 0.5mA or 1mA). To realize measuring instrument, protection equipment and control automaticallyStandardization, the miniaturization etc. of control equipment. Transformer also can be used to separate high-voltage system simultaneously, to protectThe safety of witness's body and equipment.
If mutual inductor interstar connection occurs opening circuit or short trouble, easily cause the measurement result of measurement systemInaccurate, protection system loses protective effect. Cause sometimes more serious consequence, therefore need badlyTechnology that can Real-Time Monitoring mutual inductor interstar connection fault.
Utility model content
Therefore, technical problem to be solved in the utility model be current transformer if there isWiring faults is not easy to be discovered in time, need to investigate one by one.
For this reason, the utility model provides following technical scheme:
A kind of failure detector, comprises sample circuit, treatment circuit and control simulation drive circuit,Wherein,
Sample circuit, input is connected with mutual inductor interstar connection post, control simulation drive circuit respectively, adoptsCollection is from the signal of telecommunication of mutual inductor interstar connection post or the signal of telecommunication of control simulation drive circuit;
Treatment circuit, obtains the signal of telecommunication from mutual inductor interstar connection post that also analytical sampling circuit gathers,And export corresponding control signal; Or, obtain also driving from control simulation of analytical sampling circuit collectionThe signal of telecommunication of moving circuit, and export corresponding fault indication signal;
Control simulation drive circuit, the same frequency of the signal of telecommunication of exporting according to control signal output and transformerAnalog signal.
Preferably, this failure detector also comprises two binding posts, two inputs of sample circuitEnd is connected with two binding posts of transformer by these two binding posts respectively, and control simulation drives electricityRoad is connected with one of them input of sample circuit.
Preferably, this failure detector also comprises amplifying circuit, and amplifying circuit is arranged on sample circuitAnd between treatment circuit.
Preferably, this failure detector also comprises filter circuit, and filter circuit is arranged on amplifying circuitAnd between treatment circuit.
Preferably, this failure detector also comprises A/D convertor circuit, is arranged on filter circuit and processingBetween circuit.
Preferably, this failure detector also comprises display circuit, the fault of receiving processing circuit outputIndex signal also shows accordingly according to fault indication signal.
Preferably, treatment circuit comprises single-chip microcomputer.
Preferably, treatment circuit comprises digital signal processor.
Preferably, this failure detector also comprises remote transmission module, is connected with treatment circuit, usesIn the fault indication signal remote transmission for the treatment of circuit output is arrived to corresponding receiving terminal.
The technical scheme that the utility model provides, tool has the following advantages:
The failure detector that the utility model provides, for detection of the wiring faults of transformer, mutual inductanceWhen device wiring is normal, sample circuit real-time sampling obtains the mutual inductance transmitting by mutual inductor interstar connection postIn the device signal of telecommunication input processing circuit. Once there is wiring faults in transformer, no matter be broken string orShort circuit, all can cause sample circuit not collect the signal of telecommunication from transformer, the signal collectingValue is far smaller than normal value. Now, just need to start fault detect pattern, to determine mutual inductor interstar connectionThe type of fault. , Acquisition Circuit is transferred to treatment circuit signal value and is far smaller than normal signal value(preset value), treatment circuit just judges that wiring faults has appearred in transformer, thus the control of output control signalMake connected control simulation drive circuit startup, the same frequency of the signal of telecommunication of output and transformer outputAnalog signal. This analog signal by sample circuit collection after input processing circuit, treatment circuit just canJudging accordingly mutual inductor interstar connection is disconnection fault or short trouble. Thereby can find in time mutuallyThe wiring faults of sensor, avoids causing the measurement result of measurement system inaccurate, protection system loses guarantorProtect the adverse consequences such as effect, and can determine fault type exactly so that maintenance.
Brief description of the drawings
In order to be illustrated more clearly in the utility model detailed description of the invention or technical side of the prior artCase, does the accompanying drawing to required use in detailed description of the invention or description of the Prior Art simply belowIntroduce, apparently, the accompanying drawing in the following describes is embodiments more of the present utility model, rightIn those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also basisThese accompanying drawings obtain other accompanying drawing.
The structural representation of a kind of failure detector that Fig. 1 provides for embodiment.
Description of reference numerals: 1-sample circuit; 2-amplifying circuit; 3-filter circuit; 4-AD changes electricityRoad; 5-treatment circuit; 6-control simulation drive circuit; 7-display circuit; 8-binding post; 9-connectsTerminal.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described, aobviousSo, described embodiment is the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative workThe every other embodiment obtaining under prerequisite, belongs to the scope that the utility model is protected.
In description of the present utility model, it should be noted that, term " X-axis ", " Y-axis ", " on ",The instructions such as D score, " left side ", " right side ", " vertically ", " level ", " interior ", " outward "Orientation or position relationship be based on orientation shown in the drawings or position relationship, be only for convenience of descriptionThe utility model and simplified characterization, instead of device or the element of instruction or hint indication must have spyFixed orientation, with specific orientation structure and operation, therefore can not be interpreted as limit of the present utility modelSystem. In addition, term " first ", " second ", " the 3rd " be only for describing object, and can notBe interpreted as instruction or hint relative importance.
In addition related technical characterictic in the different embodiments of described the utility model,The conflict of will not forming each other just can mutually combine.
As shown in Figure 1, the present embodiment provides a kind of failure detector, comprises sample circuit 1, locatesReason circuit 5 and control simulation drive circuit 6, wherein,
Sample circuit 1, input is connected with mutual inductor interstar connection post 9, control simulation drive circuit 6 respectively,Gather from the signal of telecommunication of mutual inductor interstar connection post 9 or the signal of telecommunication of control simulation drive circuit 6;
Treatment circuit 5, obtains the telecommunications from mutual inductor interstar connection post 9 that also analytical sampling circuit 1 gathersNumber, and export corresponding control signal; Or, obtain and analytical sampling circuit 1 gather from control mouldIntend the signal of telecommunication of drive circuit 6, and export corresponding fault indication signal; Treatment circuit in the present embodiment5 comprise single-chip microcomputer (MCU), and the core processor of this treatment circuit 5 is single-chip microcomputers; At other canReplace treatment circuit 5 in embodiment and can comprise digital signal processor (DSP), i.e. treatment circuit 5Core processor can be also digital signal processor (DSP), or arm processor.
Control simulation drive circuit 6, the same frequency of the signal of telecommunication of exporting according to control signal output and transformerAnalog signal.
The failure detector that the present embodiment provides, for detection of the wiring faults of transformer, transformerWhen wiring is normal, sample circuit 1 real-time sampling obtains transmit by mutual inductor interstar connection post 9 mutualIn the sensor signal of telecommunication input processing circuit 5. Once there is wiring faults in transformer, no matter be broken stringOr short circuit, all can cause sample circuit 1 not collect the signal of telecommunication from transformer, collectsSignal value be far smaller than normal value (preset value). Now, just need to start fault detect pattern, withDetermine the type of mutual inductor interstar connection fault. It is far away that, Acquisition Circuit 1 is transferred to treatment circuit 5 signal valuesMuch smaller than normal signal value (preset value), treatment circuit 5 just judges that wiring faults has appearred in transformer,Thereby the connected control simulation drive circuit 6 of output control signal control starts, output and mutual inductanceThe signal of telecommunication of device output is with analog signal frequently. This analog signal gathers rear input by sample circuit 1Reason circuit 5, it is disconnection fault or short circuit event that treatment circuit 5 just can be judged mutual inductor interstar connection accordinglyBarrier. Thereby not only can find in time the wiring faults of transformer, avoid causing the survey of measurement systemAmount result is inaccurate, protection system loses the adverse consequences such as protective effect, and can determine exactlyFault type is so that maintenance.
Particularly, the failure detector that the present embodiment provides also comprises two binding posts 8, sampling electricityTwo inputs on road 1 connect by these two binding posts 8 and two binding posts 9 of transformer respectivelyConnect, control simulation drive circuit 6 is connected with one of them input of sample circuit 1.
As preferred embodiment, this failure detector also comprises amplifying circuit 2, amplifying circuit 2Be arranged between sample circuit 1 and treatment circuit 5. Be used for according to the size of current of transformer output, adoptIn the circuit of sample circuit 1 self and subsequent conditioning circuit, the working range of each device zooms in or out sample circuit 1The signal of telecommunication of output, to ensure that follow-up circuit can normally work and be without prejudice.
As further preferred embodiment, this failure detector also comprises filter circuit 3, filteringCircuit 3 is arranged between amplifying circuit 2 and treatment circuit 5. Filter circuit 3 for filtering from the external worldDisturb the coupled interference between (comprise transmitted by transformer interference etc.) and each device, preventCause treatment circuit 5 to do the judgement making mistake because various interfering signals being transferred to treatment circuit 5, improveThe reliability of this failure detector, ensures the normal operation of transformer circuit. Not being provided with of otherIn the detailed description of the invention of amplifying circuit 2, filter circuit 3 can be set directly at sample circuit 1 and process electricityBetween road 5.
As concrete embodiment, this device also comprises A/D convertor circuit 4, is arranged on filter circuit 3And between treatment circuit 5. For the analog signal of previous circuit being converted to data signal for processing electricityRoad 5 identifying processings.
As another preferred embodiment, this failure detector also comprises display circuit 7, reception placeThe fault indication signal that reason circuit 5 is exported also shows accordingly according to fault indication signal. With sideJust user obtains mutual inductor interstar connection fault type intuitively, thereby carries out breakdown maintenance as soon as possible.
As other detailed description of the invention of the present utility model, this failure detector also comprises the electricity of reporting to the policeRoad, this warning circuit can be connected with treatment circuit 5, the indicating fault letter of exporting according to treatment circuit 5Number report to the police. Specifically can utilize buzzer etc. to carry out audible alarm, also can use other warningsMode, thus there is wiring faults in reminding user transformer in time.
In addition, as other preferred embodiment, this device also comprises remote transmission module, and locatesReason circuit 5 connects, for fault indication signal remote transmission the connecing to correspondence that treatment circuit 5 is exportedReceiving end, thus even if make user not near this failure detector, also can know in time mutual inductanceThe wiring faults of device. Corresponding receiving terminal can be the watch-dog in control room, also or mobileTerminal device etc. Wherein, above-mentioned remote transmission module can be wireless transport module, for example, can beBluetooth module, WiFi module etc. As alternative scheme, remote transmission module can be also wiredTransport module, for example equally also can realize by RS485 bus, CAN bus or LAN bus etc.Remote transmission function. In addition, wired transport module can also be on-line module. Or, this deviceWireless transport module and wired transport module can be set simultaneously, thereby can need choosing according to useSelect suitable available transmission means.
As other preferred embodiment, after sample circuit 1, can also be provided with holding circuit, concreteCurrent foldback circuit, overvoltage crowbar etc. can be comprised, thereby follow-up circuit, anti-can be protectedOnly damaged.
Obviously, above-described embodiment is only for example is clearly described, and not to the side of enforcementThe restriction of formula. For those of ordinary skill in the field, also can on the basis of the above descriptionTo make other changes in different forms. Here without also giving all embodimentsWith exhaustive. And the apparent variation of being extended out thus or variation are still created in the utility modelProtection domain among.
Claims (9)
1. a failure detector, is characterized in that, comprises sample circuit (1), treatment circuit (5)With control simulation drive circuit (6), wherein,
Described sample circuit (1), input drives with mutual inductor interstar connection post, described control simulation respectivelyCircuit (6) connects, and gathers the signal of telecommunication or described control simulation drive circuit from mutual inductor interstar connection post(6) the signal of telecommunication;
Treatment circuit (5), obtain and analyze described sample circuit (1) gather from mutual inductor interstar connectionThe signal of telecommunication of post, and export corresponding control signal; Or, obtain and analyze described sample circuit (1)The signal of telecommunication from described control simulation drive circuit (6) gathering, and export corresponding indicating faultSignal;
Control simulation drive circuit (6), the telecommunications according to described control signal output with transformer outputNumber with analog signal frequently.
2. failure detector according to claim 1, is characterized in that: also comprise that two connectLine terminals (8), two inputs of described sample circuit (1) are respectively by these two binding posts (8)Be connected described control simulation drive circuit (6) and described sample circuit with two binding posts of transformer(1) one of them input connects.
3. failure detector according to claim 1 and 2, is characterized in that: also comprise amplificationCircuit (2), described amplifying circuit (2) is arranged on described sample circuit (1) and described treatment circuit(5) between.
4. failure detector according to claim 3, is characterized in that: also comprise filter circuit(3), described filter circuit (3) is arranged on described amplifying circuit (2) and described treatment circuit (5)Between.
5. failure detector according to claim 4, is characterized in that: also comprise AD conversionCircuit (4), is arranged between described filter circuit (3) and described treatment circuit (5).
6. failure detector according to claim 1 and 2, is characterized in that: also comprise aobviousShow circuit (7), receive the fault indication signal of described treatment circuit (5) output and according to described faultIndex signal shows accordingly.
7. failure detector according to claim 1 and 2, is characterized in that: described processing electricityRoad (5) comprises single-chip microcomputer.
8. failure detector according to claim 1 and 2, is characterized in that: described processing electricityRoad (5) comprises digital signal processor.
9. failure detector according to claim 1 and 2, is characterized in that: also comprise long-rangeTransport module, is connected with described treatment circuit (5), for what described treatment circuit (5) was exportedFault indication signal remote transmission is to corresponding receiving terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521118543.XU CN205246801U (en) | 2015-12-29 | 2015-12-29 | Fault detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521118543.XU CN205246801U (en) | 2015-12-29 | 2015-12-29 | Fault detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205246801U true CN205246801U (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521118543.XU Active CN205246801U (en) | 2015-12-29 | 2015-12-29 | Fault detection device |
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| CN (1) | CN205246801U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858977A (en) * | 2021-01-06 | 2021-05-28 | 南京能晶电子科技有限公司 | Hall current sensor chip fault detection circuit and detection method |
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2015
- 2015-12-29 CN CN201521118543.XU patent/CN205246801U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858977A (en) * | 2021-01-06 | 2021-05-28 | 南京能晶电子科技有限公司 | Hall current sensor chip fault detection circuit and detection method |
| CN112858977B (en) * | 2021-01-06 | 2022-08-30 | 南京能晶电子科技有限公司 | Hall current sensor chip fault detection circuit and detection method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Twenty Road, Yueqing Economic Development Zone in Zhejiang province science and Technology Park 325600 Jubang Wei Wenzhou City Patentee after: Grand Group Co., Ltd. Address before: Twenty Road, Yueqing Economic Development Zone in Zhejiang province science and Technology Park 325600 Jubang Wei Wenzhou City Patentee before: JUBANG ELECTRIC CO., LTD. |