CN106970259B - Low-voltage alternating current wireless monitoring device - Google Patents
Low-voltage alternating current wireless monitoring device Download PDFInfo
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- CN106970259B CN106970259B CN201710291655.2A CN201710291655A CN106970259B CN 106970259 B CN106970259 B CN 106970259B CN 201710291655 A CN201710291655 A CN 201710291655A CN 106970259 B CN106970259 B CN 106970259B
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- data transmission
- wireless data
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Abstract
The invention discloses a low-voltage alternating current wireless monitoring device, which comprises a monitoring sampling module and a processing display module, wherein the monitoring sampling module is in communication connection with the processing display module through a wireless data transmission module, and the wireless data transmission module comprises a slave wireless data transmission module which is arranged corresponding to the monitoring sampling module and a master wireless data transmission module which is arranged corresponding to the processing display module; the detection sampling module comprises a high-precision current transformer, an I/V converter and an A/D converter. The invention can realize the measurement of the low-voltage alternating current signal required to be acquired by the test in a complex field test environment, and can transmit the data of the test monitoring point to the test responsible person in real time in a wireless mode, meanwhile, the number of special monitoring staff is reduced, the short-distance contact opportunity of the monitoring staff and the high-voltage electrified equipment is reduced, and the safety coefficient in the test process is improved.
Description
Technical Field
The invention relates to the technical field of test devices for measuring low-voltage alternating current signals, in particular to a low-voltage alternating current wireless monitoring device.
Background
At present, when a large-scale electrical test such as a long-term induction voltage withstanding and partial discharge test of a power transformer is required, current change conditions of an input end and an output end of a monitoring power supply, a variable frequency cabinet or the testing transformer are required to be collected in real time, and because the whole test process is complex and changeable, the current change of the positions can be monitored to timely adjust a test thought, and the occurrence of an event caused by damage of a main test device due to overcurrent in the test process is avoided. The traditional mode is to arrange the clamp ammeter of the monitoring point of the continuous monitoring card of specialized personnel during the test, recite to the test person in charge, judge according to the report number of monitoring personnel by the test person in charge. The mode has lag in counting time, the test person in charge cannot react at the first time, and the monitoring person needs to closely observe the clamp ammeter data, and a certain risk exists when the distance from the high-voltage test equipment is too close.
Disclosure of Invention
The invention aims to provide a low-voltage alternating current wireless monitoring device which can measure low-voltage alternating current signals required to be collected in a complex field test environment, and can transmit the low-voltage alternating current signals in real time in a wireless mode, so that data of test monitoring points can be reflected to test persons in charge at first time, the number of special monitoring persons is reduced, the short-distance contact opportunity of the monitoring persons and high-voltage electrified equipment is reduced, and the safety coefficient in the test process is improved.
The invention adopts the technical scheme that:
the low-voltage alternating current wireless monitoring device comprises a monitoring sampling module and a processing display module, wherein the monitoring sampling module is in communication connection with the processing display module through a wireless data transmission module, and the wireless data transmission module comprises a slave wireless data transmission module which is arranged corresponding to the monitoring sampling module and a master wireless data transmission module which is arranged corresponding to the processing display module; the detection sampling module comprises a high-precision current transformer, an I/V converter and an A/D converter, wherein the high-precision current transformer is fixedly arranged on an alternating current wire outlet at a position to be sampled, the output end of the secondary side of the high-precision current transformer is connected with the input end of the I/V converter, the output end of the I/V converter is connected with the input end of the A/D converter, and the output end of the A/D converter is connected with the input end of the slave wireless data transmission module; the processing display module comprises a key controller, a battery/charging controller, a display unit and a central processing unit, wherein the output end of the main wireless data transmission module is connected with the input end of the central processing unit, the output end of the central processing unit is connected with the output end of the display unit, and the key controller and the battery/charging controller are respectively connected with the central processing unit.
The number of the secondary wireless data transmission modules is also multiple and equal to the number of the secondary wireless data transmission modules; all the slave wireless data transmission modules are correspondingly arranged with the master wireless data transmission module in a time division communication mode, each slave wireless data transmission module has an independent ID address, and data or commands are sent by adopting a data frame with an address code.
The display unit adopts an LCD display.
The invention can realize the measurement of the low-voltage alternating current signal required to be acquired by the test in a complex field test environment, and can transmit the data of the test monitoring point to the test responsible person in real time in a wireless mode, meanwhile, the number of special monitoring staff is reduced, the short-distance contact opportunity of the monitoring staff and the high-voltage electrified equipment is reduced, and the safety coefficient in the test process is improved. The system adopts a wireless transmission mode and combines with low-voltage alternating current measurement, thereby realizing the real-time monitoring of low-voltage alternating current signals in large-scale electrical tests. The system adopts a wireless transmission mode and combines with low-voltage alternating current measurement, thereby realizing the real-time monitoring of low-voltage alternating current signals in large-scale electrical tests.
Drawings
Fig. 1 is a schematic block diagram of the circuit of the present invention.
Detailed Description
As shown in fig. 1, the invention comprises a monitoring sampling module and a processing display module, wherein the monitoring sampling module is in communication connection with the processing display module through a wireless data transmission module, and the wireless data transmission module comprises a slave wireless data transmission module which is arranged corresponding to the monitoring sampling module and a master wireless data transmission module which is arranged corresponding to the processing display module; the detection sampling module comprises a high-precision current transformer, an I/V converter and an A/D converter, wherein the high-precision current transformer is fixedly arranged on an alternating current wire outlet at a position to be sampled, the output end of the secondary side of the high-precision current transformer is connected with the input end of the I/V converter, the output end of the I/V converter is connected with the input end of the A/D converter, and the output end of the A/D converter is connected with the input end of the slave wireless data transmission module; the processing display module comprises a key controller, a battery/charging controller, a display unit and a central processing unit, wherein the output end of the main wireless data transmission module is connected with the input end of the central processing unit, the output end of the central processing unit is connected with the output end of the display unit, and the key controller and the battery/charging controller are respectively connected with the central processing unit.
The number of the secondary wireless data transmission modules is also multiple and equal to the number of the secondary wireless data transmission modules; in order to avoid the problem of co-channel interference, the system adopts a time division technology to separate the communication between the system master wireless data transmission module and any slave wireless data transmission module in a time division mode, each slave wireless data transmission module has an independent ID address, and data or commands are sent by adopting a data frame with an address code.
When the invention works specifically, the response data of the current sampling device is transmitted to the main wireless data transmission module. The I/V converter converts the input secondary current into low voltage, and is convenient for the A/D converter to carry out analog-to-digital conversion. The invention can realize the measurement of the low-voltage alternating current signal required to be acquired by the test in a complex field test environment, and can transmit the data of the test monitoring point to the test responsible person in real time in a wireless mode, meanwhile, the number of special monitoring staff is reduced, the short-distance contact opportunity of the monitoring staff and the high-voltage electrified equipment is reduced, and the safety coefficient in the test process is improved. The system adopts a wireless transmission mode and combines with low-voltage alternating current measurement, thereby realizing the real-time monitoring of low-voltage alternating current signals in large-scale electrical tests. The system adopts a wireless transmission mode and combines with low-voltage alternating current measurement, thereby realizing the real-time monitoring of low-voltage alternating current signals in large-scale electrical tests.
Claims (3)
1. A low-voltage alternating current wireless monitoring device is characterized in that: the system comprises a monitoring sampling module and a processing display module, wherein the monitoring sampling module is in communication connection with the processing display module through a wireless data transmission module, and the wireless data transmission module comprises a slave wireless data transmission module which is arranged corresponding to the monitoring sampling module and a master wireless data transmission module which is arranged corresponding to the processing display module; the monitoring sampling module comprises a high-precision current transformer, an I/V converter and an A/D converter, wherein the high-precision current transformer is fixedly arranged on an alternating current wire outlet at a position to be sampled, the output end of the secondary side of the high-precision current transformer is connected with the input end of the I/V converter, the output end of the I/V converter is connected with the input end of the A/D converter, and the output end of the A/D converter is connected with the input end of the slave wireless data transmission module; the processing display module comprises a key controller, a battery/charging controller, a display unit and a central processing unit, wherein the output end of the main wireless data transmission module is connected with the input end of the central processing unit, the output end of the central processing unit is connected with the output end of the display unit, and the key controller and the battery/charging controller are respectively connected with the central processing unit.
2. The low-voltage ac current wireless monitoring device of claim 1, wherein: the number of the secondary wireless data transmission modules is also multiple and equal to the number of the secondary wireless data transmission modules; all the slave wireless data transmission modules are correspondingly arranged with the master wireless data transmission module in a time division communication mode, each slave wireless data transmission module has an independent ID address, and data or commands are sent by adopting a data frame with an address code.
3. The low voltage ac current wireless monitoring device of claim 1, wherein: the display unit adopts an LCD display.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710291655.2A CN106970259B (en) | 2017-04-28 | 2017-04-28 | Low-voltage alternating current wireless monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710291655.2A CN106970259B (en) | 2017-04-28 | 2017-04-28 | Low-voltage alternating current wireless monitoring device |
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| CN106970259A CN106970259A (en) | 2017-07-21 |
| CN106970259B true CN106970259B (en) | 2023-04-21 |
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| CN201710291655.2A Active CN106970259B (en) | 2017-04-28 | 2017-04-28 | Low-voltage alternating current wireless monitoring device |
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| CN112684381A (en) * | 2020-12-03 | 2021-04-20 | 广东电网有限责任公司中山供电局 | CT polarity tester of hand-held type wireless transmission sampling |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014020861A (en) * | 2012-07-17 | 2014-02-03 | Kawashima Co Ltd | Solar cell module monitoring system |
| CN104698278A (en) * | 2015-02-25 | 2015-06-10 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Alternating current line alternating current lightning arrester live detection system and method |
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2017
- 2017-04-28 CN CN201710291655.2A patent/CN106970259B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014020861A (en) * | 2012-07-17 | 2014-02-03 | Kawashima Co Ltd | Solar cell module monitoring system |
| CN104698278A (en) * | 2015-02-25 | 2015-06-10 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Alternating current line alternating current lightning arrester live detection system and method |
Non-Patent Citations (1)
| Title |
|---|
| 毛东升 ; 王淼 ; .基于无线传输的便携式高压电流互感器变比测试仪设计.电力科学与工程.2009,(11),全文. * |
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