CN205193146U - Electroscope is discerned in wireless electrification - Google Patents
Electroscope is discerned in wireless electrification Download PDFInfo
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- CN205193146U CN205193146U CN201520911385.7U CN201520911385U CN205193146U CN 205193146 U CN205193146 U CN 205193146U CN 201520911385 U CN201520911385 U CN 201520911385U CN 205193146 U CN205193146 U CN 205193146U
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Abstract
Electroscope is discerned in wireless electrification, including voltage signal sensor, filter circuit, signal acquisition module, control module and the signal transmission module who connects gradually, voltage signal is gathered from the high voltage live body to the voltage signal sensor, signal transmission module and outside processing terminal are connected, with signal transmission to outside processing terminal, signal transmission module including communication the control unit, with wireless communication module that communication the control unit links to each other and lie in processing terminal on the 2nd wireless communication module, the control of communication the control unit a wireless communication module opens / closes, signal transmission module is through first, the 2nd wireless communication module to processing terminal transmitting data. The utility model discloses a voltage signal is gathered to the voltage signal sensor, carries out the post -filter by filter circuit, conveys to signal acquisition element and carries out signal processing, adopts wireless communication module to realize the data transmission between electroscope and the processing terminal, conveniently tests the electricity operation.
Description
Technical field
The utility model belongs to electroscopy equipment technical field, particularly relates to a kind of for detecting the whether charged electroscope of the electrified bodys such as transmission line of electricity cable.
Background technology
Overhaul charging equipment is the important means grasping grid equipment ruuning situation, Timeliness coverage and treatment facility defect.According to the regulation of electric power safety working regulation, the electrical equipment of brownout work or before dead line job site attaching ground wire, first electrical verification, identifying equipment or the true no-voltage of circuit.Namely electroscope is for detecting on power equipment whether one of common tool that there is voltage.Clearly verified by electroscope and after repair apparatus but no-voltage, carried out other operation again, electrical ground line can be prevented, touched the serious accident generations such as electric equipment by mistake.Investigate the evidence of a case power mode and classify, electroscope can be divided into contact electroscope and non-contact type electricity checking device.Wherein, non-contact type electricity checking device can not directly contact with object under test due to during operation, becomes study hotspot gradually.The principle of work of non-contact type electricity checking device carries out threshold triggers based on to the measurement of power-frequency electric field strength, thus whether judgment object is charged, sent electricity or without telecommunications breath, be widely used in the electrical verification of the dangerous objects such as high-tension electricity at present by signal designation.
It is a kind of for UHV (ultra-high voltage) and extra-high voltage AC non-contact type electricity checking method and electroscopic device that the patent No. is that the Chinese invention patent of ZL201410249785.6 discloses, this electroscopic device is by measuring below transmission line of electricity, perpendicular to ground and perpendicular to the intensity of power-frequency electric field strength component of transmission line of electricity trend and distribution situation, the standard field intensity distribution curve obtained with emulation is compared, thus judge the charged situation of power line cables, this electricity-testing method can avoid the harmful effect produced electrical verification complicated and changeable of the formate field intensity around larger the caused charging equipment of the interference around transmission line of electricity between the charging equipment such as transformer station and current conversion station, improve accuracy of detection.But the signal acquisition module in this electroscopic device and adopt optical fiber to connect between processing terminal, makes the relative position of signal acquisition module and processing terminal, distance etc. be subject to many restrictions, brings inconvenience to electrical verification operating process in practical operation.
Summary of the invention
The purpose of this utility model is to provide a kind of easy to operate wireless live identification electroscope adapting to various measurement environment.
To achieve these goals, the utility model takes following technical solution:
Wireless live identification electroscope, comprise: the voltage signal sensor connected successively, filtering circuit, signal acquisition module, control module and signal transmission module, described voltage signal sensor gathers voltage signal from high-voltage charged body, described signal transmission module is connected with external treatment terminal, by Signal transmissions to external treatment terminal; The second wireless communication module that described signal transmission module comprises communication control unit, the first wireless communication module be connected with described communication control unit and is arranged on processing terminal, described communication control unit is made up of the level shifting circuit be connected with described control module and the on-off circuit that is connected with described level shifting circuit, it controls the On/Off of described first wireless communication module, and described signal transmission module transmits data by first, second wireless communication module to processing terminal.
Further, described signal acquisition module also comprises the counter be electrically connected with described control module, the voltage signal that described counter is used for gathering counts, and send count value to described control module, described control module controls described signal acquisition module according to count value and starts or stop data collection, and control described signal transmission module start or stop transmit data.
Further, described signal acquisition module comprises the amplifying circuit, low-pass filter circuit, A/D convertor circuit, 50Hz filtering circuit, half-wave rectifying circuit and the circuit of averaging that connect successively, and described control module is connected with described low-pass filter circuit and amplifying circuit.
Further, described first wireless communication module is the HLK-RM04UART-ETH-WIFI module of Shenzhen Hai Lingke Electronics Co., Ltd..
Electroscope of the present utility model gathers voltage signal by voltage signal sensor, after carrying out filtering by filtering circuit, be sent to signal gathering unit and carry out signal transacting, simultaneously, by control module, the amplifying circuit in signal gathering unit and low-pass filter circuit are controlled, according to the gain of voltage range signalization and change signal cutoff frequency, thus improve stability and the precision of signal, and the data adopting wireless communication module to realize between electroscope and processing terminal are transmitted, and facilitate electrical verification to operate; For eliminating the interference that transmission of wireless signals is brought electric field, signal acquisition module has carried out time-division processing to data acquisition and data transmission, namely when data acquisition, closes wireless communication module; When data are transmitted, open wireless communication module, do not carry out data acquisition simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment, simple introduction is done below by the accompanying drawing used required in embodiment or description of the prior art, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit block diagram of the utility model embodiment;
Fig. 2 is the circuit block diagram of the utility model signal acquisition module;
Fig. 3 is the circuit block diagram of the utility model signal transmission module;
Fig. 4 is that the utility model electrical verification detects schematic diagram.
Below in conjunction with accompanying drawing and each embodiment, the utility model is further described.
Embodiment
As shown in Figure 1, electroscope of the present utility model comprises the voltage signal sensor 1, filtering circuit 2, signal acquisition module 3, control module 4 and the signal transmission module 5 that connect successively.Voltage signal sensor 1 gathers the voltage signal on high-voltage charged body, after filtering circuit 2 filtering, send signal acquisition module 3 to, carry out analog to digital conversion by signal acquisition module 3 pairs of signals and become digital signal, signal transmission module 5 is sent to by control module 4, signal exports and is sent to outside processing terminal by signal transmission module 5, is analyzed according to signal data by processing terminal, thus differentiates that whether electrified body is charged.External treatment terminal of the present utility model is computer, or mobile intelligent terminal, such as, be provided with the panel computer of operating system, smart mobile phone or personal digital assistant (PDA).
Voltage signal sensor 1 is connected with filtering circuit 2, and the voltage signal sensed is sent to filtering circuit 2, carries out filtering high frequency spurs by filtering circuit 2 to the voltage signal received.Voltage signal sensor 1 of the present utility model adopts the differential type field strength measurement sensor that market is sold, and filtering circuit is low-pass filter.
Filtering circuit 2 is connected with signal acquisition module 3, as shown in Figure 2, signal acquisition module 3 comprise connect successively amplifying circuit 3-1, low-pass filter circuit 3-2, A/D convertor circuit 3-3,50Hz filtering circuit 3-4, half-wave rectifying circuit 3-5 and the circuit 3-6 that averages.Filtering circuit 2 sends signal to amplifying circuit 3-1, amplifying circuit 3-1 amplifies the voltage signal sensed, secondary filtering is carried out through low-pass filter circuit 3-2 through amplifying signal, filtering high-frequency signal, again improve the precision of signal, signal after filtering carries out analog to digital conversion by A/D convertor circuit 3-3 and is converted to digital signal, digital signal carries out third time filtering through 50Hz filtering circuit 3-4, other compositions of filtering, extract power frequency component, power frequency component eliminates negative value through half-wave rectifying circuit 3-5, then the circuit 3-6 that averages is sent to, the circuit 3-6 that averages stores the sampled value of setting quantity, then the mean value of these sampled values is calculated, thus obtain a stable power frequency component value, finally this signal is delivered to control module 4.
The operation of control module 4 control signal acquisition module 3, the control module of the present embodiment is single-chip microcomputer.Control module 4 is connected with the low-pass filter circuit 3-2 of signal acquisition module 3, changes the cutoff frequency of low-pass filter circuit thus the clutter of filtering different frequency by first via feedback control signal, improves the stability of signal; Control module 4 is also connected with the amplifying circuit 3-1 of signal acquisition module 3 simultaneously, changes amplifying circuit to the enlargement factor of signal, thus improves the conversion accuracy of A/D convertor circuit, improve the resolution of AD by the second tunnel feedback control signal.After control module 4 receives the signal value of zones of different, judge the scope belonging to voltage, controlled the gain size of amplifying circuit by the second tunnel feedback control signal, improve the resolution of AD.
As shown in Figure 3, the signal transmission module 5 of the present embodiment the second wireless communication module 5-3 of comprising communication control unit 5-1, the first wireless communication module 5-2 and being positioned on processing terminal.Communication control unit 5-1 is made up of level shifting circuit and on-off circuit, level shifting circuit carries out level conversion to the rs 232 serial interface signal that control module 4 exports, for the first wireless communication module 5-2 provides suitable voltage, on-off circuit controls the opening and closing of the first wireless communication module; Signal transmission module 5 transmits data by the first wireless communication module 5-2 and the second wireless communication module 5-3 to processing terminal.The first wireless communication module 5-2 of the present embodiment adopts HLK-RM04UART-ETH-WIFI (serial ports-Ethernet-wireless network) module of Shenzhen Hai Lingke Electronics Co., Ltd., second wireless communication module 5-3 adopts Broadcom802.11abgnwirelessSDIOadapter wireless network card, is the wireless network card on panel computer.
In order to the acquisition and processing making the work of wireless communication module not affect front end data, communication control unit 5-1 controls according to the opening and closing of the signal of control module 4 to the first wireless communication module 5-2, when signal acquisition module collection and when processing data, communication control unit 5-1 makes the first wireless communication module 5-2 close, after data acquisition and process complete, start the first wireless communication module 5-2, realize the transmission of data.
For avoiding the frequent switch of wireless communication module, further, signal acquisition module also comprises counter, counter counts the voltage signal gathered, counter is electrically connected with control module 4 and transmits count value to control module, and when counting reaches preset value N, control module 4 sends the order stopping gathering to signal acquisition module, signal acquisition module is stopped data collection, and unison counter resets; Control module 4 sends startup command to communication control unit 5-1 simultaneously, and communication control unit 5-1 opens the first wireless communication module 5-2 and carries out data transmission; After being transmitted, control module 4 recovers data acquisition and process, and counter starts counting, is cycled to repeat above step.
Below in conjunction with Fig. 4, the course of work of the present utility model is described:
When carrying out electrical verification detection, measurement point is distributed on the measuring route a perpendicular to power transmission line bearing of trend, direction is measured by measurement point successively along arrow x in Fig. 4, voltage signal sensor 1 induces the magnitude of voltage at each measurement point vertical interval d two ends in measuring route according to electromagnetic induction principle, then by filtering circuit 2 filtering, signal is outputted to signal acquisition module 3, signal acquisition module 3 pairs of signals amplify, filtering, analog to digital conversion and averaging, digital signal is outputted to control module 4, signal is sent to processing terminal by optical fiber by control module 4, after the data of all measurement points have all been measured, computational analysis is carried out according to the data collected by processing terminal, finally obtain charged recognition result.
Above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although be described in detail the utility model with reference to above-described embodiment, those of ordinary skill in the field are to be understood that, still can modify to embodiment of the present utility model or equivalent replacement, and not departing from any amendment of the utility model spirit and scope or equivalent replacement, it all should be encompassed among right of the present utility model.
Claims (4)
1. wireless live identification electroscope, comprise: the voltage signal sensor connected successively, filtering circuit, signal acquisition module, control module and signal transmission module, described voltage signal sensor gathers voltage signal from high-voltage charged body, described signal transmission module is connected with external treatment terminal, by Signal transmissions to external treatment terminal;
It is characterized in that:
The second wireless communication module that described signal transmission module comprises communication control unit, the first wireless communication module be connected with described communication control unit and is arranged on processing terminal, described communication control unit is made up of the level shifting circuit be connected with described control module and the on-off circuit that is connected with described level shifting circuit, it controls the On/Off of described first wireless communication module, and described signal transmission module transmits data by first, second wireless communication module to processing terminal.
2. wireless live identification electroscope according to claim 1, it is characterized in that: described signal acquisition module also comprises the counter be electrically connected with described control module, the voltage signal that described counter is used for gathering counts, and send count value to described control module, described control module controls described signal acquisition module according to count value and starts or stop data collection, and control described signal transmission module start or stop transmit data.
3. wireless live identification electroscope according to claim 1, it is characterized in that: described signal acquisition module comprises the amplifying circuit, low-pass filter circuit, A/D convertor circuit, 50Hz filtering circuit, half-wave rectifying circuit and the circuit of averaging that connect successively, and described control module is connected with described low-pass filter circuit and amplifying circuit.
4. wireless live identification electroscope according to claim 1, is characterized in that: described first wireless communication module adopts the HLK-RM04UART-ETH-WIFI module of Shenzhen Hai Lingke Electronics Co., Ltd..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520911385.7U CN205193146U (en) | 2015-11-16 | 2015-11-16 | Electroscope is discerned in wireless electrification |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520911385.7U CN205193146U (en) | 2015-11-16 | 2015-11-16 | Electroscope is discerned in wireless electrification |
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| CN205193146U true CN205193146U (en) | 2016-04-27 |
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| CN201520911385.7U Expired - Fee Related CN205193146U (en) | 2015-11-16 | 2015-11-16 | Electroscope is discerned in wireless electrification |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291081A (en) * | 2016-08-17 | 2017-01-04 | 众芯汉创（北京）科技有限公司 | Far-field region electrical verification system and method |
-
2015
- 2015-11-16 CN CN201520911385.7U patent/CN205193146U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291081A (en) * | 2016-08-17 | 2017-01-04 | 众芯汉创（北京）科技有限公司 | Far-field region electrical verification system and method |
| CN106291081B (en) * | 2016-08-17 | 2023-11-21 | 众芯汉创（北京）科技有限公司 | Far field electric testing system and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160427 Termination date: 20171116 |
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| CF01 | Termination of patent right due to non-payment of annual fee |