CN203385784U - Contactless electroscope used for electric power maintenance operation - Google Patents
Contactless electroscope used for electric power maintenance operation Download PDFInfo
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- CN203385784U CN203385784U CN201320343670.4U CN201320343670U CN203385784U CN 203385784 U CN203385784 U CN 203385784U CN 201320343670 U CN201320343670 U CN 201320343670U CN 203385784 U CN203385784 U CN 203385784U
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Abstract
The utility model discloses a contactless electroscope used for electric power maintenance operation. The contactless electroscope comprises a single-chip microcomputer control module individually connected with an electric field signal acquisition and processing module, a temperature measurement and control module, a probe communication module, an acousto-optic alarm module, a display module and a power supply module. The contactless electroscope used for the electric power maintenance operation is not contacted with a high-voltage line directly and is not required to operate a long insulating bar; workload of maintenance workers for power verification operation can be reduced, work efficiency can be improved, personal safety of the maintenance workers can be guaranteed, and the contactless electroscope is beneficial to ensuring safe and reliable operation of a high-voltage power grid; and a digital integrated circuit is used, the contactless electroscope is characterized by small size, light weight, low power consumption, stable and reliable operation performance and portable performance and the like, and the contactless electroscope is a kind of extremely effective electric power safety operation tool for electric special operation personnel.
Description
Technical field
The utility model belongs to high voltage detection technique field, is specifically related to a kind of electroscope of the non-contact type for the electric power overhaul operation.
Background technology
When the interruption maintenance of electric system high-tension line, must follow power failure, electrical verification, hanging earthing conductor, then start the regulation of operation.The electrical verification operation of ultra-high-tension power transmission line and high-tension apparatus must complete by high voltage electroscope.Current electroscope on the market is substantially all the contact electroscope, and this class electroscope all must directly contact with ultra-high-tension power transmission line or converting equipment, and with long insulating bar.Experience according to the site operation personnel, rising along with electric pressure, require safe distance more large, insulating bar is just longer, particularly when the electrical verification of high-altitude, operating personnel easily collide with and cause the electrical verification tool damage in upper and lower tower and electric operating process, security incident also easily occurs on tower or under strong wind atmosphere, exist and use inconvenience, the electrical verification distance is little, be not easy to carry, insufficient sensitivity waits well not enough, also there is the using area restriction in some occasion, anti-interference and poor sensitivity, the shortcomings such as the signal transmission is unstable, and traditional contact electroscope is only applicable to in-site measurement, measurement result can only be with color, sound etc. show, inconvenient data are transmitted by transmission line in other words conj.or perhaps, in other words can not be with digital form transmission and display measurement result, can't realize operated from a distance and remote monitor.Therefore, traditional electroscope of the contact with long insulating bar more and more has been difficult to meet the requirement of power industry development, and the demand in market has also just been echoed in novel contactless galvanoscopic generation.The non-contact type high-voltage detecting device is a kind of novel electroscope, also in research and development and experimental stage, almost there is no suitable product on market at present.
The utility model content
The purpose of this utility model is to provide a kind of electroscope of the non-contact type for the electric power overhaul operation, has solved that the use that existing contact electroscope exists is inconvenient, the electrical verification distance is little, is not easy to carry, insufficient sensitivity is good, unsettled problem is transmitted in using area restriction, signal.
The technical scheme that the utility model adopts is, a kind of electroscope of the non-contact type for the electric power overhaul operation, comprise single chip control module, be connected with respectively electric field signal collection and processing module, temperature survey and control module, probe communication module, sound and light alarm module, display module and power module on single chip control module.
Characteristics of the present utility model also are,
Single chip control module wherein adopts the C8051F020 single-chip microcomputer.
Electric field signal collection wherein comprises with processing module electric field signal collection and amplifying circuit, double-T network and the current rectifying and wave filtering circuit be connected successively, also is connected with the 50Hz/60Hz self-test signal on double-T network and produces circuit.
Temperature survey wherein and control module adopt the DS18B20 digital temperature sensor.
Display module wherein adopts 128*64 dot matrix Chinese character figure type liquid crystal display.
Probe communication module wherein comprises power frequency electric field probe, photoelectric commutator and the communication interface circuit connected successively.
The beneficial effects of the utility model are directly with hi-line, not contact the insulating bar that does not need operation to grow, workload in the time of can reducing maintainer's electrical verification operation, increase work efficiency, ensure maintainer's personal safety, also be conducive to guarantee the safe and reliable operation of high-tension electricity network; What adopt is digital integrated circuit, has a volume little, lightweight, and power consumption is little, stable and reliable working performance, and the characteristics such as be easy to carry, be a kind of very effectively electric power safety power tool of electrician's job that requires special skills personnel.
The accompanying drawing explanation
Fig. 1 is that the utility model is for the galvanoscopic structural representation of the non-contact type of electric power overhaul operation;
Fig. 2 is electric field signal collection and processing module block scheme in the utility model electroscope;
Fig. 3 is electric field signal collection and amplifying circuit schematic diagram in the utility model electroscope;
Fig. 4 is that in the utility model electroscope, the 50Hz/60Hz self-test signal produces circuit theory diagrams;
Fig. 5 is temperature survey and control module schematic diagram in the utility model electroscope;
Fig. 6 is sound and light alarm module principle figure in the utility model electroscope;
Fig. 7 is display module schematic diagram in the utility model electroscope;
Fig. 8 is probe communication module block scheme in the utility model electroscope;
Fig. 9 is the global procedures frame diagram;
Figure 10 is the single-chip microcomputer main program flow chart.
In figure, 1. single chip control module, 2. electric field signal collection and processing module, 3. temperature survey and control module, 4. probe communication module, 5. sound and light alarm module, 6. display module, 7. power module, 8. electric field signal collection and amplifying circuit, 9. double-T network, the 10.50Hz/60Hz self-test signal produces circuit, 11. current rectifying and wave filtering circuits, 12. temperature sensor, 13. liquid crystal display, 14. power frequency electric field probes, 15. photoelectric commutator, 16. communication interface circuits.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
The utility model is for the galvanoscopic structure of non-contact type of electric power overhaul operation, as shown in Figure 1, comprise single chip control module 1, be connected with respectively electric field signal collection and processing module 2, temperature survey and control module 3, probe communication module 4, sound and light alarm module 5, display module 6 and power module 7 on single chip control module 1.
Electric field signal collection and transport module 2 complete the collection of induction field signal, read near the electric field signal of power transmission line, after 50Hz/60Hz frequency selection circuit and current rectifying and wave filtering circuit, carry out again analog to digital conversion, convert thereof into corresponding level signal, enter single chip control module 1, carry out the data storage in C8051F020 inside and compare with threshold values, and by display module 6 display measurement results, exceed threshold values system triggers sound and light alarm module 5 carry out the sound and light alarm prompting.Probe communication module 4, for the outside expansion, can realize accurately measuring at a distance.The temperature detecting function of temperature survey and control module 3 implement devices is to realize the system automatic heating when the battery module temperature of device is too low, to guarantee that electroscope still can work under low temperature condition.The C8051F020 single-chip microcomputer is to take 3.3V low-power consumption, the high-speed microprocessor that the MCS51 series monolithic is kernel, and its peripheral hardware or functional part have comprised Multipexer selector switch, programmable gain amplifier, ADC, DAC, voltage comparator, temperature sensor, voltage reference, UART, SPI, SMBbus/I2C, programmable counter/timer array (PCA), digital I/O port, timer, supply monitor, clock oscillator and house dog (WDT) etc.RAM on the internal RAM of built-in 256 bytes and 4KB sheet, and 64K FLASH program storage simultaneously.Owing to having adopted high performance microcontroller, saved a large amount of peripheral components, as external RAM, ROM storer etc., can greatly simplify hardware configuration, improved the reliability of system.
As shown in Figure 2, the electric field signal collection comprises with processing module 2 electric field signal collection and amplifying circuit 8, double-T network 9 and the current rectifying and wave filtering circuit 11 be connected successively, also is connected with the 50Hz/60Hz self-test signal on double-T network 9 and produces circuit 10.
Fig. 3 is electric field signal collection and amplifying circuit 8 schematic diagrams, it has utilized the fundamental characteristics of field effect transistor, be that field effect transistor is voltage control device, it is to utilize the field effect of input circuit to carry out a kind of semiconductor devices of output control loop electric current, utilizes the induced charge of NMOS pipe to change the electric current produced and detects ultra-high-tension power transmission line and high voltage electric power equip ment electric field intensity.When field effect transistor is operated in non-saturated region, the variation delta I of drain electrode-source current
dSto tested electric field E, be directly proportional; And in saturation region, only measuring electric field hour, the variation delta I of drain electrode-source current
dSbe approximated to direct ratio with tested electric field E; When the measurement electric field is larger, the variation delta I of drain electrode-source current
dSbecome serious nonlinear relationship with tested electric field E.M is the electric charge induction sheet.
Fig. 4 is that the 50Hz/60Hz self-test signal produces circuit 10 schematic diagrams.Because the utility model can only be to electrical network electric field (50Hz ± 5Hz/60Hz ± 5Hz) sensitivity, so self-checking circuit be actually one identical with overhead transmission line radiation field frequency, for generation of the low-frequency sine signal of 50Hz/60Hz, circuit consists of the two-stage total radio amplifier, wherein RC bridge-type sine wave generation circuit be take the RC series-parallel network as frequency selection network and positive feedback network, take the Voltage Series negative feedback amplifier circuit as amplifying element, there is oscillation frequency stable, the characteristics such as carrying load ability is strong, and the output voltage distortion is little.R by the circuit frequency selection network rationally is set and the numerical value of C, make self-test signal produce the sine wave signal of circuit output 50Hz/60Hz, and the frequency of sine wave output signal is
Fig. 5 is temperature survey and control module 3 schematic diagrams.Temperature survey and control module 3 comprise temperature measuring circuit and heated at constant temperature circuit.The utility model is to utilize the DS18B20 digital temperature sensor 12 of DALLAS company to realize temperature survey, this sensor belongs to single wire bus device, have the advantages that circuit is simple, volume is little, form temp measuring system with it, an order wire is arranged, just can hang a lot of such digital thermometers, circuit is simple, very convenient.The heated at constant temperature circuit adopts PTC heated at constant temperature material, and can produce high heating-up temperature is 50 ℃, realizes the heating function to non-contact type high voltage electroscope system.When the temperature of non-contact type high voltage electroscope battery module, during lower than-10 ℃, the electroscope host computer system can be opened heater circuit automatically, is heated.When this material surface temperature reaches 50 ℃, system stops heating, has guaranteed the safe and reliable operation of high voltage electroscope main frame.
Fig. 6 is sound and light alarm module 5 schematic diagrams.Sound and light alarm module 5 has realized the sound and light of alarm of non-contact type high voltage electroscope system, when electroscope detects ultra-high-tension power transmission line electricity is arranged, send high level to the P1.6 mouth by single chip control module 1, make the triode V2 conducting of sound and light alarm module 5, red light emitting diodes is bright, and hummer sends the alarm sound of " dichloro-diphenyl-dichlorothane ... ".When electroscope detects ultra-high-tension power transmission line and there is no electricity, send high level to the P1.7 mouth by single chip control module 1, make the triode V3 conducting of sound and light alarm module 5, green LED is bright.
Fig. 7 is display module 6 schematic diagrams.The utility model is selected 128*64 dot matrix Chinese character figure type liquid crystal display 13, and its model is HS128642-1, from tape controller KS0108, uses the low power supply of 3.3V just can work.This display directly hangs in the address space of C8051F020 single-chip microcomputer, can use bus mode to be driven.
Fig. 8 is probe communication module 4 block schemes.Probe communication module 4 is external expansion module that the utility model is set up, and with the range of application of expanding unit, increases detection range and detection accuracy, comprises the power frequency electric field probe 14, photoelectric commutator 15 and the communication interface circuit 16 that connect successively.
Fig. 9 is the global procedures frame diagram.Software for Design of the present utility model mainly comprises single-chip microcomputer master routine, signals collecting program, liquid crystal display program, Temperature Measuring Program etc.
Figure 10 is the single-chip microcomputer main program flow chart.The hardware address that the single-chip microcomputer master routine completes data structure show, system distributes, interrupts arranging the functions such as (comprising Interruption and interface interruption etc.), system initialization, System self-test, real time data measurement, be responsible for the tissue of each functional module of Single Chip Microcomputer (SCM) system and realize, and special event is processed.
The utility model is to take the non-contact type high-voltage detecting device that the C8051F020 single-chip microcomputer is core, the integrated circuit system is divided into to three large modules: induction module is signals collecting, identification module is that signal is processed, transport module is output and the transmission of data, it is the electric field theory according to high pressure overhead power line, judge that by surveying power circuit electric field on every side whether circuit is charged, by the NMOS field effect transistor, the induction field signal collected is carried out to shaping simultaneously, filtering, the processing such as amplification, send into single-chip computer control system, the signal that is about to signal acquisition module output carries out the signal processing in single-chip microcomputer, then trigger the acousto-optic module by single-chip microcomputer and carry out acousto-optic hint.The power module that whole circuit adopts rechargeable battery and stabilized voltage supply to form provides the energy support.
Be provided with a power switch button on non-contact type high voltage electroscope guidance panel, for galvanoscopic start, shut-off function, short in being start, long by being shutdown.Charger is external charger for lithium ion battery.System adopts the lithium ion battery power supply.After system powers on, system starts module by the internal storage of automatically packing into of the boot on the FLASH storer, and guiding C8051F020 chip enable, can work system.
At first carry out galvanoscopic self check, press and stir button, the selective system self check, to produce the power frequency sine wave signal by self-checking circuit, after the A/D conversion, complete processing and the demonstration of measuring-signal in single chip control module 1, simultaneously sound and light alarm, show that electroscope is working properly, can be used for actual test.
Then select electrical verification to measure, galvanoscopic electric field signal collection and processing module 2 complete the collection of induction field signal, read near the electric field signal of power transmission line, after the 50Hz/60Hz self-test signal produces circuit 10, then carry out analog to digital conversion, convert thereof into corresponding level signal, enter single-chip microcomputer and carry out the signal processing, carry out threshold values in single-chip microcomputer inside relatively, and by liquid crystal display 13 display measurement values, exceed threshold values system send the sound and light alarm signal and carry out the sound and light alarm prompting.
Claims (6)
1. the electroscope of the non-contact type for the electric power overhaul operation, it is characterized in that, comprise single chip control module (1), be connected with respectively electric field signal collection and processing module (2), temperature survey and control module (3), probe communication module (4), sound and light alarm module (5), display module (6) and power module (7) on single chip control module (1).
2. the electroscope of the non-contact type for the electric power overhaul operation according to claim 1, is characterized in that, described single chip control module (1) adopts the C8051F020 single-chip microcomputer.
3. the electroscope of the non-contact type for the electric power overhaul operation according to claim 1, it is characterized in that, described electric field signal collection comprises with processing module (2) electric field signal collection and amplifying circuit (8), double-T network (9) and the current rectifying and wave filtering circuit (11) be connected successively, also is connected with the 50Hz/60Hz self-test signal on double-T network (9) and produces circuit (10).
4. the electroscope of the non-contact type for the electric power overhaul operation according to claim 1, is characterized in that, described temperature survey and control module (3) adopt DS18B20 digital temperature sensor (12).
5. the electroscope of the non-contact type for the electric power overhaul operation according to claim 1, is characterized in that, described display module (6) adopts 128*64 dot matrix Chinese character figure type liquid crystal display (13).
6. the electroscope of the non-contact type for the electric power overhaul operation according to claim 1, it is characterized in that, described probe communication module (4) comprises power frequency electric field probe (14), photoelectric commutator (15) and the communication interface circuit (16) connected successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320343670.4U CN203385784U (en) | 2013-06-14 | 2013-06-14 | Contactless electroscope used for electric power maintenance operation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320343670.4U CN203385784U (en) | 2013-06-14 | 2013-06-14 | Contactless electroscope used for electric power maintenance operation |
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| CN203385784U true CN203385784U (en) | 2014-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320343670.4U Expired - Lifetime CN203385784U (en) | 2013-06-14 | 2013-06-14 | Contactless electroscope used for electric power maintenance operation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049137A (en) * | 2014-06-10 | 2014-09-17 | 国家电网公司 | Electricity measurement system for cable clamp |
| CN104730322A (en) * | 2015-03-05 | 2015-06-24 | 三峡大学 | Non-contact high voltage electroscope |
| CN106443158A (en) * | 2016-11-04 | 2017-02-22 | 优利德科技(中国)有限公司 | Sensing method for displaying multi-state NCV and sensing device |
| CN110456143A (en) * | 2019-08-19 | 2019-11-15 | 三峡大学 | The transformer belt electricity condition detection device of survey is sentenced based on light current magnetic signal |
-
2013
- 2013-06-14 CN CN201320343670.4U patent/CN203385784U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049137A (en) * | 2014-06-10 | 2014-09-17 | 国家电网公司 | Electricity measurement system for cable clamp |
| CN104730322A (en) * | 2015-03-05 | 2015-06-24 | 三峡大学 | Non-contact high voltage electroscope |
| CN104730322B (en) * | 2015-03-05 | 2017-12-15 | 三峡大学 | A kind of non-contact type high-voltage detecting device |
| CN106443158A (en) * | 2016-11-04 | 2017-02-22 | 优利德科技(中国)有限公司 | Sensing method for displaying multi-state NCV and sensing device |
| CN110456143A (en) * | 2019-08-19 | 2019-11-15 | 三峡大学 | The transformer belt electricity condition detection device of survey is sentenced based on light current magnetic signal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NANJING DUNJIE ELECTRIC TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: XI'AN UNIV. OF SCIENCE AND ENGINEERING Effective date: 20141009 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 710048 XI'AN, SHAANXI PROVINCE TO: 211500 NANJING, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20141009 Address after: 211500 Jiangsu city in Nanjing Province Economic Development Zone Liuhe Longchi street Xiongzhou Road No. 399 Building No. 7 Hengli Park 222 Patentee after: NANJING DUNJIE ELECTRIC TECHNOLOGY CO.,LTD. Address before: 710048 Shaanxi city of Xi'an Province Jinhua Road No. 5 Patentee before: Xi'an University of Technology |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140108 |