CN204241618U - Fault detector - Google Patents
Fault detector Download PDFInfo
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- CN204241618U CN204241618U CN201420671086.6U CN201420671086U CN204241618U CN 204241618 U CN204241618 U CN 204241618U CN 201420671086 U CN201420671086 U CN 201420671086U CN 204241618 U CN204241618 U CN 204241618U
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- 238000007493 shaping process Methods 0.000 claims abstract description 36
- 238000004891 communication Methods 0.000 claims abstract description 35
- 230000003321 amplification Effects 0.000 claims abstract description 31
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 31
- 238000012545 processing Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000004148 unit process Methods 0.000 claims abstract description 3
- 238000001914 filtration Methods 0.000 claims description 12
- 239000013307 optical fiber Substances 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 7
- 230000015556 catabolic process Effects 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
A kind of fault detector, comprising: for detecting the fault of automation equipment and generating the failure detector circuit of light signal; For the photoelectric switching circuit exported after light signal is converted to electric signal; For carrying out the shaping amplification circuit exported after process is amplified in shaping to electric signal; For the central processing unit that the electric signal after shaping amplification circuit being carried out to shaping amplification process processes; And for the electric signal after central processing unit process being converted to wireless signal and the radio communication circuit exported.Shaping amplification circuit comprises the first triode, the first resistance and the second resistance; The collector of the first triode the first resistance of connecting is connected with power supply; The collector of the first triode is also connected with central processing unit; Be connected with the output terminal of photoelectric switching circuit after base series second resistance of the first triode; The grounded emitter of the first triode.The data transmission correctness of above-mentioned fault detector is high, breakdown judge precision is higher and power consumption is lower.
Description
Technical field
The utility model relates to feeder line fault checkout equipment technical field, particularly relates to a kind of fault detector.
Background technology
Fault detector is used for detecting the short circuit, earth fault etc. of the support equipment of the urban distribution network system power circuits such as ring main unit and indicating.Traditional fault detector can be detected the fault (such as short trouble, earth fault) of service cable circuit and be shown by display panel by failure message, thus makes tour personnel to determine rapidly according to display information the track section that breaks down and to find out trouble spot.
Traditional fault detector is, by optical fiber, fault information data is transferred to communication terminal.Although Optical Fiber Transmission long transmission distance, under high/low temperature and equipment corona discharge, there is optical fiber easily impaired, aging, and impaired or aging rear all existence affect the defect of transmission range and data transmission quality.Meanwhile, optical fiber transmits data in high/low temperature situation be there will be signal distortion, has a strong impact on transmission quality, causes fault to fail to report and wrong report situation, thus makes data transmission correctness lower, has a strong impact on the safe operation of electrical network.In addition, the breakdown judge precision of traditional fault detector is lower and power consumption is higher.
Utility model content
Based on this, be necessary for the problems referred to above, provide that a kind of data transmission correctness is high, breakdown judge precision is higher and the fault detector that power consumption is lower.
A kind of fault detector, for detecting the fault of automation equipment and indicating, comprising: for detecting the fault of automation equipment and generating light signal and the failure detector circuit exported; The photoelectric switching circuit that light signal for being exported by described failure detector circuit exports after being converted to electric signal; For carrying out the shaping amplification circuit exported after process is amplified in shaping to described electric signal; For the central processing unit that the electric signal after described shaping amplification circuit being carried out to shaping amplification process processes; And for the electric signal after central processing unit process being converted to wireless signal and the radio communication circuit exported; Described failure detector circuit is connected with described photoelectric switching circuit by optical fiber; Described photoelectric switching circuit, described shaping amplification circuit, central processing unit and radio communication circuit are electrically connected successively; Described shaping amplification circuit comprises the first triode, the first resistance and the second resistance; The collector of described first triode the first resistance of connecting is connected with power supply; The collector of described first triode is also connected with described central processing unit; Be connected with the output terminal of described photoelectric switching circuit after base series second resistance of described first triode; The grounded emitter of described first triode.
Wherein in an embodiment, described photoelectric switching circuit comprises phototriode, and the collector of described phototriode is connected with described power supply; The base stage of described phototriode receives the light signal of described failure detector circuit output; Be connected with the base stage of described first triode after described second resistance of emitter series connection of described phototriode.
Wherein in an embodiment, described fault detector also comprises filtering circuit; Described filtering circuit is connected with described photoelectric switching circuit, described shaping amplification circuit respectively.
Wherein in an embodiment, described filtering circuit comprises filter resistance and filter capacitor; One end of described filter resistance is connected with the emitter of described phototriode, other end ground connection; One end of described filter capacitor is connected with the emitter of described phototriode, other end ground connection.
Wherein in an embodiment, the frequency of operation of described radio communication circuit is 433 megahertzes.
Wherein in an embodiment, the chip that described radio communication circuit is A7129 by model realizes.
Wherein in an embodiment, described fault detector also comprises first interface and the second interface; Described second interface is integrated with all wireless transmission interfaces of described radio communication circuit; Described second interface is connected with described radio communication circuit; Described first interface connects to described central processing unit and can carry out corresponding connection with described second interface thus realize the connection of described central processing unit and described radio communication circuit.
Wherein in an embodiment, described fault detector also comprises the display panel for showing failure message; Described display panel and described central processing unit are electrically connected.
Wherein in an embodiment, described fault detector also comprises the oscillograph for checking the electric signal after described shaping amplification circuit process, and described oscillograph is connected to the collector of described first triode.
Above-mentioned fault detector realizes the conversion of photosignal by photoelectric switching circuit, and carries out amplification process by the first triode in shaping amplification circuit to the electric signal after conversion, can improve the precision of breakdown judge.Meanwhile, because the quiescent dissipation of the first triode is almost nil, the low-power consumption requirement of fault detector can not be affected, make it can keep the characteristic of low-power consumption.And, communication terminal is exported to after electric signal after shaping being amplified is converted to wireless signal by radio communication circuit, fiber data can be overcome because property at high and low temperature causes the impact of signal attenuation and wave form distortion, improve the correctness of data transmission, ensure the precision of breakdown judge further.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the fault detector in an embodiment;
Fig. 2 be embodiment illustrated in fig. 1 in the schematic diagram of the photoelectric switching circuit of fault detector, shaping amplification circuit and filtering circuit;
Fig. 3 be embodiment illustrated in fig. 1 in the schematic diagram of radio communication circuit of fault detector;
Fig. 4 be embodiment illustrated in fig. 1 in the schematic diagram of first interface J7 of fault detector.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Figure 1 shows that the structured flowchart of the fault detector in an embodiment.In the present embodiment, fault detector is used for detecting the short circuit of the support equipment of the urban distribution network such as feeder pillar, ring main unit system power circuit and earth fault and showing.Fault detector comprises failure detector circuit 110, photoelectric switching circuit 120, shaping amplification circuit 130, central processing unit 140 and radio communication circuit 150, also comprises display panel 160.Wherein, failure detector circuit 110 is connected with photoelectric switching circuit 120 by optical fiber.Photoelectric switching circuit 120, shaping amplification circuit 130, central processing unit 140 and radio communication circuit 150 are electrically connected successively.Display panel 160 and central processing unit 140 are electrically connected.
Failure detector circuit 110 for detecting the fault such as short circuit and ground connection of equipment, and after forming light signal by Optical Fiber Transmission to photoelectric switching circuit 120.In the present embodiment, failure detector circuit 110 comprises short-circuit sensor and grounding sensor, is respectively used to detect rear formation light signal to short trouble and earth fault and exports.In other examples, failure detector circuit 110 only can arrange one of them, or the corresponding pick-up unit of the fault verification detected according to actual needs.
Photoelectric switching circuit 120 is exported to shaping amplification circuit 130 and is carried out shaping amplification process after being converted to electric signal for the light signal exported failure detector circuit 110.In the present embodiment, fault detector also comprises filtering circuit.As shown in Figure 2, photoelectric switching circuit 120 comprises phototriode Q1 to the circuit theory of photoelectric switching circuit 120, shaping amplification circuit 130 and filtering circuit, and shaping amplification circuit 130 comprises the first triode Q2, the first resistance R1 and the second resistance R2.Filtering circuit comprises filter capacitor C1 and filter resistance R3.Particularly, the collector of phototriode Q1 is connected with power supply VCC3_6.The base stage of phototriode Q1 receives the light signal of failure detector circuit 110 output.The emitter of photosensitive triode Q1 is connected after the second resistance R2 and is connected with the base stage of the first triode Q2.The collector of the first triode Q2 is connected after the first resistance R1 and is connected with the collector of phototriode Q1.The collector of the first triode Q2 is also connected with central processing unit 140.The grounded emitter of the first triode Q2.The collector of phototriode Q1 also connect with filter capacitor C1, filter resistance R3 respectively after ground connection.
Phototriode Q1 can realize the conversion of the photosignal to fiber data, and by exporting central processing unit 140 after the filtering process of filter capacitor C1 and filter resistance R3 and the amplification process of the first triode Q2.By carrying out filtering to the electric signal after conversion, process is amplified in shaping, can improve the precision of breakdown judge, to improve equipment reliability of operation.Meanwhile, due to fault detector many employings lithium battery power supply, without other external power source, therefore it requires the operating characteristic with low-power consumption.The quiescent dissipation of the first triode is almost nil, therefore can not affect the low-power consumption requirement of fault detector, makes it meet the characteristic requirements of low-power consumption.In the present embodiment, fault detector can also comprise oscillograph, is connected to the collector (TP1 place) of the first triode Q2.Oscillograph is used for checking the electrical signal data after shaping is amplified.
Central processing unit 140 exports to display panel 160 after being processed accordingly by the electric signal after shaping amplification circuit 130 shaping is amplified.Display panel 160 can show relevant information such as failure message etc., thus makes staff can region, localization of faults position rapidly, is convenient to the carrying out of maintenance work.
Central processing unit 140 also exports after electric signal being carried out corresponding process.Electric signal after central processing unit 140 processes by radio communication circuit 150 is converted to wireless signal and sends to communication terminal, namely wirelessly relevant failure message and status of equipment is uploaded to communication terminal and carries out analyzing and positioning.Staff also can be configured by some information of radio communication circuit 150 pairs of fault detectors simultaneously, makes operating process more flexible, saves the time of staff, realize quick position.Particularly, the circuit theory of radio communication circuit 150 as shown in Figure 3.The integrated chip that radio communication circuit 150 is A7129 by model realizes, and its frequency of operation is 433 megahertzes.In the present embodiment, above-mentioned fault detector also comprises first interface J7 and the second interface J2.Wherein.Second interface J2 is connected with radio communication circuit 150, and it is integrated with all wireless transmission interfaces of radio communication circuit 150.First interface J7 connects to central processing unit 140 and can carry out corresponding connection with the second interface J2 thus realize central processing unit 140 and the connection of radio communication circuit 150, realizes wireless transmission function.Realized the connection of central processing unit 140 and radio communication circuit 150 by first interface J7 and the second interface J2, can connection procedure be simplified.The schematic diagram of first interface J7 as shown in Figure 4.
As shown in Figure 4, central processing unit 140 is by receive data by wireless RX_Wireless, wireless data transmission TX_Wireless, Wireless clock signal Clock_Wireless and without line options Select_Wireless tetra-SPI (Serial Peripheral Interface, Serial Peripheral Interface (SPI)) mouth is connected with radio communication circuit 150, Wireless Markup signal Flag_Wireless is then connected with radio communication circuit 150 by IO (input and output) mouth, thus realizes the wireless transmission function of fault detector.
Above-mentioned fault detector realizes the conversion of photosignal by phototriode Q1, and carries out amplification process by the first triode Q2 in shaping amplification circuit 130 to the electric signal after conversion, can improve the precision of breakdown judge.Meanwhile, because the quiescent dissipation of the first triode is almost nil, the low-power consumption requirement of fault detector can not be affected, make it can keep the characteristic of low-power consumption.And, communication terminal is sent to after electric signal after shaping being amplified is converted to wireless signal by radio communication circuit 150, fiber data can be overcome because property at high and low temperature causes the impact of signal attenuation and wave form distortion, improve the correctness of data transmission, ensure the precision of breakdown judge further.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (9)
1. a fault detector, for detecting the fault of automation equipment and indicating, is characterized in that, comprising: for detecting the fault of automation equipment and generating light signal and the failure detector circuit exported; The photoelectric switching circuit that light signal for being exported by described failure detector circuit exports after being converted to electric signal; For carrying out the shaping amplification circuit exported after process is amplified in shaping to described electric signal; For the central processing unit that the electric signal after described shaping amplification circuit being carried out to shaping amplification process processes; And for the electric signal after central processing unit process being converted to wireless signal and the radio communication circuit exported; Described failure detector circuit is connected with described photoelectric switching circuit by optical fiber; Described photoelectric switching circuit, described shaping amplification circuit, central processing unit and radio communication circuit are electrically connected successively;
Described shaping amplification circuit comprises the first triode, the first resistance and the second resistance; The collector of described first triode the first resistance of connecting is connected with power supply; The collector of described first triode is also connected with described central processing unit; Be connected with the output terminal of described photoelectric switching circuit after base series second resistance of described first triode; The grounded emitter of described first triode.
2. fault detector according to claim 1, is characterized in that, described photoelectric switching circuit comprises phototriode, and the collector of described phototriode is connected with described power supply; The base stage of described phototriode receives the light signal of described failure detector circuit output; Be connected with the base stage of described first triode after described second resistance of emitter series connection of described phototriode.
3. fault detector according to claim 2, is characterized in that, described fault detector also comprises filtering circuit; Described filtering circuit is connected with described photoelectric switching circuit, described shaping amplification circuit respectively.
4. fault detector according to claim 3, is characterized in that, described filtering circuit comprises filter resistance and filter capacitor; One end of described filter resistance is connected with the emitter of described phototriode, other end ground connection; One end of described filter capacitor is connected with the emitter of described phototriode, other end ground connection.
5. fault detector according to claim 1, is characterized in that, the frequency of operation of described radio communication circuit is 433 megahertzes.
6. fault detector according to claim 5, is characterized in that, the chip that described radio communication circuit is A7129 by model realizes.
7. fault detector according to claim 1, is characterized in that, described fault detector also comprises first interface and the second interface; Described second interface is integrated with all wireless transmission interfaces of described radio communication circuit; Described second interface is connected with described radio communication circuit; Described first interface connects to described central processing unit and can carry out corresponding connection with described second interface thus realize the connection of described central processing unit and described radio communication circuit.
8. fault detector according to claim 1, is characterized in that, described fault detector also comprises the display panel for showing failure message; Described display panel and described central processing unit are electrically connected.
9. fault detector according to claim 1, is characterized in that, described fault detector also comprises the oscillograph for checking the electric signal after described shaping amplification circuit process, and described oscillograph is connected to the collector of described first triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420671086.6U CN204241618U (en) | 2014-11-11 | 2014-11-11 | Fault detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420671086.6U CN204241618U (en) | 2014-11-11 | 2014-11-11 | Fault detector |
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| CN204241618U true CN204241618U (en) | 2015-04-01 |
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| CN201420671086.6U Expired - Fee Related CN204241618U (en) | 2014-11-11 | 2014-11-11 | Fault detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388381A (en) * | 2015-12-10 | 2016-03-09 | 国网北京市电力公司 | Power supply state monitoring system |
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2014
- 2014-11-11 CN CN201420671086.6U patent/CN204241618U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388381A (en) * | 2015-12-10 | 2016-03-09 | 国网北京市电力公司 | Power supply state monitoring system |
| CN105388381B (en) * | 2015-12-10 | 2019-06-21 | 国网北京市电力公司 | Monitoring system for power supply status |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20201111 |
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| CF01 | Termination of patent right due to non-payment of annual fee |