CN101859482B - Broadband signal transmission system based on wireless transmission in high-potential environment - Google Patents
Broadband signal transmission system based on wireless transmission in high-potential environment Download PDFInfo
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- CN101859482B CN101859482B CN2010101785275A CN201010178527A CN101859482B CN 101859482 B CN101859482 B CN 101859482B CN 2010101785275 A CN2010101785275 A CN 2010101785275A CN 201010178527 A CN201010178527 A CN 201010178527A CN 101859482 B CN101859482 B CN 101859482B
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Abstract
The invention relates to a broadband signal transmission system based on wireless transmission in a high-potential environment, and belongs to the technical field of high-voltage test equipment and measurement. The broadband signal receiving device comprises a sensor, a signal processing module and a signal processing module, wherein the sensor is used for receiving an original signal of a broadband signal to be transmitted and converting the original signal into a voltage signal; the remote unit is used for receiving the voltage signal, performing analog-to-digital conversion to obtain a digital signal, and is connected with the sensor and installed in a high-potential environment; the local unit is used for receiving the digital signal and sending the digital signal to the terminal computer; and the terminal computer is used for receiving the digital signal of the local unit, displaying the waveform of the original signal received by the sensor, storing the waveform and finishing data storage and analysis. The signal transmission system can realize the measurement of various physical quantities in a high potential environment, such as voltage, current, an electromagnetic field, power, temperature and the like by matching with a proper sensor probe, and can realize the long-term all-weather online acquisition and transmission of data in a severe natural environment and an electromagnetic environment for a long time.
Description
Technical field
The present invention relates to a kind ofly, belong to high-voltage testing equipment and field of measuring technique based on the broadband signal transmission system under the high potential environment of wireless transmission.
Background technology
Having several distinct issues in the measurement of the above noble potential occasion of number kV, at first is that the measuring position current potential is high, the signal transmission difficulty of equipment; Secondly, the long-term supply of electrical energy difficulty of measuring equipment is big; The 3rd, the common electromagnetic environment of noble potential occasion is abominable, and electromagnetism pulsation crowd, thunderbolt and the switching overvoltage that corona discharge produces all possibly influence the operate as normal of electronic system.
Aspect data acquisition equipment; It is a lot of to conduct a research both at home and abroad; And autonomous device and integrated circuit board that a large amount of maturations are arranged can realize wideband data acquisition transmission, uses but this kind equipment is used for the electronegative potential occasion, has when noble potential uses that electromagnetic immunity degree level is low, the problem of dielectric level difference.High pressure area research mechanism has carried out research for many years to the measuring system of noble potential; And produced data acquisition and transmission system based on light; Bandwidth covers the measurement mechanism of direct current to number MHz; These devices applicability in laboratory study is very strong, but out of doors or under the rugged surroundings, the optical fiber that connects high-pressure side and low pressure end can influence the insulating property of system under test (SUT).Adopt the device of Optical Fiber Composite insulated column can solve Insulation Problems.But such apparatus insulated device manufacturing and installation are complicated, and cost is high, are difficult to flexible Application in test or the online detection range out of doors.Therefore develop a kind of little to the insulation influence, can be used for the collection of noble potential physical quantity, the strong wideband data acquiring and transmission system of natural conditions applicability had very outstanding construction value.
Summary of the invention
The objective of the invention is to propose a kind of based on the broadband signal transmission system under the high potential environment of wireless transmission; To obtain the broadband signal under the high potential environment; Measuring-signal adopts wireless transmission, so that at abominable physical environment and the medium-term and long-term on-line operation of electromagnetic environment.
The present invention propose based on the broadband signal transmission system under the high potential environment of wireless transmission, comprise;
Sensor is used to receive the original signal of broadband signal to be transmitted, and converts original signal into voltage signal, and described sensor places under the high potential environment;
Far-end unit; Be used for the voltage signal that receiving sensor is exported, and voltage signal is carried out obtaining digital signal after the analog to digital conversion, digital signal is through radio wave transmissions to local unit; Described far-end unit links to each other with sensor, and is installed under the high potential environment;
Local unit is used to receive the digital signal of far-end unit, and this digital signal is sent to terminal computer;
Terminal computer is used to receive the digital signal of local unit, shows the waveform of the original signal that sensor receives, and storage, accomplishes data storing and analysis, and described terminal computer links to each other with local unit.
In the above-mentioned signal transmission system, described far-end unit comprises:
Holding circuit is used for that the voltage signal that receives is carried out peak value and suppresses, and obtains the voltage of specified input range, and described holding circuit is made up of electric capacity and voltage dependent resistor (VDR), and electric capacity and voltage dependent resistor (VDR) are parallel with one another;
The A/D modular converter is used for above-mentioned voltage is carried out the A/D conversion, obtains digital signal, and described A/D converter links to each other with holding circuit;
Wireless transport module is used to receive above-mentioned digital signal, and this signal is sent to local unit, described wireless transport module and A/D modular converter through antenna with the form of radiowave
Supply module, being used to be respectively A/D modular converter and wireless transport module provides working power, and described supply module links to each other with wireless transport module with the A/D modular converter respectively.
In the above-mentioned signal transmission system, described local unit comprises:
Wireless transport module is used to receive the digital signal from far-end unit;
Interface convertor is used for the digital signal of above-mentioned reception is carried out being sent to terminal computer after the protocol conversion, and described interface convertor links to each other with wireless transport module.
The present invention propose based on the broadband signal transmission system under the high potential environment of wireless transmission, its advantage is: the measuring-signal bandwidth can reach 50MHz.Measuring-signal is through wireless transmission, and no external insulation problem realizes power supply continuously through absorbing sun power.Utilize signal transmission system of the present invention; Cooperate the right sensors probe; Can realize multiple measurements that is in the physical quantity in the high potential environment such as voltage, electric current, electromagnetic field, power, temperature, can be in abominable physical environment and medium-term and long-term long-term round-the-clock online acquisition and the transmission that realizes data of electromagnetic environment.
Description of drawings
Fig. 1 is the structured flowchart of signal transmission system of the present invention.
Fig. 2 is the circuit diagram of holding circuit in the signal transmission system far-end unit shown in Figure 1.
Embodiment
The present invention propose based on the broadband signal transmission system under the high potential environment of wireless transmission, its structure is as shown in Figure 1, comprising:
Sensor is used to receive the original signal of broadband signal to be transmitted, and converts original signal into voltage signal, and described sensor places under the high potential environment;
Far-end unit; Be used for the voltage signal that receiving sensor is exported, and voltage signal is carried out obtaining digital signal after the analog to digital conversion, digital signal is through radio wave transmissions to local unit; Described far-end unit links to each other with sensor, and is installed under the high potential environment;
Local unit is used to receive the digital signal of far-end unit, and this digital signal is sent to terminal computer;
Terminal computer is used to receive the digital signal of local unit, shows the waveform of the original signal that sensor receives, and storage, accomplishes data storing and analysis, and described terminal computer links to each other with local unit.
Far-end unit in the above-mentioned signal transmission system comprises:
Holding circuit is used for that the voltage signal that receives is carried out peak value and suppresses, and obtains the voltage of specified input range, and described holding circuit is made up of electric capacity and voltage dependent resistor (VDR), and electric capacity and voltage dependent resistor (VDR) are parallel with one another, and the circuit diagram of holding circuit is as shown in Figure 2;
The A/D modular converter is used for above-mentioned voltage is carried out the A/D conversion, obtains digital signal, and described A/D converter links to each other with holding circuit;
Wireless transport module is used to receive above-mentioned digital signal, and this signal is sent to local unit, described wireless transport module and A/D modular converter through antenna with the form of radiowave
Supply module, being used to be respectively A/D modular converter and wireless transport module provides working power, and described supply module links to each other with wireless transport module with the A/D modular converter respectively.
Local unit in the above-mentioned signal transmission system comprises:
Wireless transport module is used to receive the digital signal from far-end unit;
Interface convertor is used for the digital signal of above-mentioned reception is carried out being sent to terminal computer after the protocol conversion, and described interface convertor links to each other with wireless transport module.
Among the embodiment based on the broadband signal transmission system under the high potential environment of wireless transmission that the present invention proposes, the sensor and the far-end unit of signals collecting part are installed on the high voltage occasion.The original signal of sensor acquisition becomes the digital signal that is used for communication after holding circuit and D/A converter module conversion.Holding circuit is as shown in Figure 2.Voltage signal converts the digital signal that can be used for communication into through analog-to-digital conversion module, and it is the A/D converter of NIUSB-5133 that analog-to-digital conversion module adopts the model of being produced by America NI company.Transmission system is in waiting status in the ordinary course of things, and after receiving acquisition instructions, system begins image data; The data of gathering are transmitted to local unit by wireless transport module through A/D conversion back; Low, the strong anti-interference performance of the bit error rate, antenna are dipole-type, and length can be 10cm; Wireless transport module can be to grind magnificent company by Taiwan to produce, and model is UNO-1150-G20E.Adopting total power is that the general solar cell panel combination 12V of 40W, the general lead-acid accumulator parallel connection of 20AH are A/D modular converter in the far-end unit and wireless transport module power supply.Local unit is used for the control to far-end unit, and receives the data of far-end unit transmission, and realization is connected with terminal computer.Local unit through with far-end unit in identical wireless transport module (UNO-1150-G20E) receive signal; Through general interface convertor (model is the universal of LAN-USB) LAN interface in the wireless transport module is connected with the USB interface of terminal computer, terminal computer shows that on the interface current waveform stores simultaneously.Terminal computer is realized the mutual of system and user, accomplishes data storing and analysis.Terminal computer of the present invention can adopt general PC, requires more than the CPU frequency 1.8GHz, more than the internal memory 1G, WindowsXP operating system is installed.
The wideband online measuring system of corona current of high-voltage transmission line of the present invention can carry out on-line measurement to the corona current transient waveform of ultra-high-tension power transmission line, and bandwidth can reach 50MHz, can install and use at 1000kV and on line.Far-end unit wherein converts voltage signal into can be used for communication digital signal, and transmits logarithmic data through wireless data transfer module to said local unit, low, the strong anti-interference performance of the bit error rate, and communication distance can reach 1km.Far-end unit in the system adopts solar panels to combine storage battery power supply; Adopt power-supply controller of electric to coordinate the energy stream between solar panels, accumulator and the consumer; And adopt power electronics formula voltage changer to guarantee the compatibility of intermodule voltage, can long-term non-maintaining operation.
Claims (1)
1. one kind based on the broadband signal transmission system under the high potential environment of wireless transmission; Described broadband signal carries out on-line measurement through the corona current transient waveform to ultra-high-tension power transmission line and obtains; The bandwidth of broadband signal reaches 50MHz; Install and use at 1000kV and on, it is characterized in that this transmission system comprises with line;
Sensor is used to receive the original signal of broadband signal to be transmitted, and converts original signal into voltage signal, and described sensor places under the high potential environment;
Far-end unit is used for the voltage signal that receiving sensor is exported, and voltage signal is carried out obtaining digital signal after the analog to digital conversion; Digital signal is through radio wave transmissions to local unit; Described far-end unit links to each other with sensor, and is installed under the high potential environment, and described far-end unit comprises: holding circuit; Being used for that the voltage signal that receives is carried out peak value suppresses; Obtain the voltage of specified input range, described holding circuit is made up of electric capacity and voltage dependent resistor (VDR), and electric capacity and voltage dependent resistor (VDR) are parallel with one another; The A/D modular converter is used for above-mentioned voltage is carried out the A/D conversion, obtains digital signal, and described A/D converter links to each other with holding circuit; Wireless transport module is used to receive above-mentioned digital signal, and this signal is sent to local unit through antenna with the form of radiowave, and described wireless transport module links to each other with the A/D modular converter; Supply module, being used to be respectively A/D modular converter and wireless transport module provides working power, and described supply module links to each other with wireless transport module with the A/D modular converter respectively;
Local unit is used to receive the digital signal of far-end unit, and this digital signal is sent to terminal computer, and described local unit comprises: wireless transport module is used to receive the digital signal from far-end unit; Interface convertor is used for the digital signal of above-mentioned reception is carried out being sent to terminal computer after the protocol conversion, and described interface convertor links to each other with wireless transport module;
Terminal computer is used to receive the digital signal of local unit, shows the waveform of the original signal that sensor receives, and storage, accomplishes data storing and analysis, and described terminal computer links to each other with local unit.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102818928A (en) * | 2011-12-16 | 2012-12-12 | 清华大学 | Current probe-based on-line measuring system for high-frequency corona pulse current on high-voltage line |
| CN102928711A (en) * | 2012-11-01 | 2013-02-13 | 中联重科股份有限公司 | Broadband synchronous online measurement system for conductive electromagnetic disturbance of engineering machinery |
| CN103048507B (en) * | 2012-11-27 | 2015-05-13 | 电子科技大学 | Short-distance operable digital oscilloscope |
| CN106230665B (en) * | 2016-09-09 | 2023-04-07 | 深圳市艾特智能科技有限公司 | Debugging device |
| CN110445676B (en) * | 2019-07-23 | 2023-04-18 | 深圳和而泰智能控制股份有限公司 | Data monitoring system, method and device and computer readable storage medium |
| CN110798234B (en) * | 2019-10-15 | 2021-08-17 | 深圳和而泰智能控制股份有限公司 | Method and equipment for improving communication sensitivity in 433MHZ wireless communication |
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|---|---|---|---|---|
| CN101320059A (en) * | 2008-07-23 | 2008-12-10 | 董震 | Device and method for high voltage current measurement |
| CN201185036Y (en) * | 2008-01-10 | 2009-01-21 | 武汉慧测科技有限公司 | Transmission electricity on-line monitoring device base on wireless sensing technology |
| CN201392372Y (en) * | 2009-01-12 | 2010-01-27 | 尚雪嵩 | On-line monitoring and wireless remote transmission device of lightning arrester |
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| EP0482229B1 (en) * | 1990-10-22 | 1994-08-10 | Asea Brown Boveri Ag | Device for monitoring partial discharges in winding elements of an electric machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201185036Y (en) * | 2008-01-10 | 2009-01-21 | 武汉慧测科技有限公司 | Transmission electricity on-line monitoring device base on wireless sensing technology |
| CN101320059A (en) * | 2008-07-23 | 2008-12-10 | 董震 | Device and method for high voltage current measurement |
| CN201392372Y (en) * | 2009-01-12 | 2010-01-27 | 尚雪嵩 | On-line monitoring and wireless remote transmission device of lightning arrester |
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Owner name: CSG ELECTRIC POWER RESEARCH INSTITUTE CO., LTD. Free format text: FORMER OWNER: SOUTHERN POWER GRID TECHNOLOGY RESEARCH CENTER |
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Effective date of registration: 20111009 Address after: 100084 Beijing City, Haidian District Tsinghua Yuan Applicant after: TSINGHUA University Co-applicant after: China South Power Grid International Co.,Ltd. Address before: 100084 Beijing City, Haidian District Tsinghua Yuan Applicant before: Tsinghua University Co-applicant before: Southern Power Grid Technology Research Center |
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