CN101581737A - Microwave current transducer - Google Patents
Microwave current transducer Download PDFInfo
- Publication number
- CN101581737A CN101581737A CNA2008100710310A CN200810071031A CN101581737A CN 101581737 A CN101581737 A CN 101581737A CN A2008100710310 A CNA2008100710310 A CN A2008100710310A CN 200810071031 A CN200810071031 A CN 200810071031A CN 101581737 A CN101581737 A CN 101581737A
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- current
- microwave
- current transducer
- current transformer
- semiconductor integrated
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- Testing Of Individual Semiconductor Devices (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention relates to a microwave current transducer which adopts electric waves to transmit current information and a current transformer to obtain the current information. Electricity between high voltage and low voltage is thoroughly isolated, and a high voltage security problem is thoroughly solved. The current transducer can be manufactured to be very small and greatly enhances the measuring accuracy by an idiostatic measure, and the problem of the electricity of each semiconductor integrated circuit can be reliably and economically solved in such a way that a power supply current transducer provides a power supply for the semiconductor integrated circuits.
Description
The present invention relates to a kind of current sample and change and send device.It has not only improved the current measurement precision, and can transmit tested current information at a distance.
At present, semiconductor integrated technology, radio involve optical communication technique and develop rapidly.The current value of electric system high-voltage circuit can be modulated into light signal and transmit with optical fiber after current transformer extracts.Optical fiber is insulator, and it not only transmits signal but also serve as the barrier of insulation between high and low pressure.Because this advantage, now many domestic and international electricians scientific research institution is all in the research of being devoted to the optical current transmitter.But because tested lead to the power supply supply problem of the integrated circuit between the optical fiber, luminotron etc. makes existing optical current transmitter, price ratio low.And optical cable is with the same lay cables for it of cable raceway groove.
The purpose of this invention is to provide a kind of current sample, become the system and device that send, shows.It sends current information aloft by electric wave and needn't lay cables and pipeline.Device has not only solved each SIC (semiconductor integrated circuit) electrical problem, and has improved the current measurement precision greatly.
The object of the present invention is achieved like this: device is provided with three mutual inductors such as main current mutual-inductor, compensation current transformer, power current transformer.Tested lead penetrates this three little mutual inductors one by one.Each current transformer and operation coding device electrical ties, operation coding device carry out electrical ties with the Digital Microwave modulator again.With magnetic core, the Secondary Winding of thin wire with each current transformer, operation coding device, digital modulator are transferred with tested lead single-point and are communicated with in addition, and it is idiostatic that they are formed.
Main current mutual-inductor carries out current sample, collects to such an extent that current value is modulated into electric impulse signal through the operation coding device.Pulse signal becomes the Digital Microwave signal to send through the Digital Microwave modulators modulate.The Digital Microwave signal is recalled to electric signal for digital instrument metering and demonstration after being received, decode by specific Digital Microwave signal receiver.
Power current transformer in the device offers the electricity consumption of SIC (semiconductor integrated circuit) such as operation coding device, Digital Microwave modulator.Compensation current transformer substitutes the main current mutual-inductor running when the circuit underload, (load below 20%) measuring accuracy during with raising circuit underload.
Adopt the current signal of electric wave transmission high-tension line, the electric isolation that obtains up hill and dale between the high and low pressure, therefore the high-voltage safety problem is solved up hill and dale.Idiostatic measure allows current transformer do very for a short time, and has improved measuring accuracy.
The present invention is further described below in conjunction with drawings and Examples.
Figure one is an electric diagram of the present invention.
Tested lead 13. idiostatic lead 14. microwave signal receivers 15. instrument and meters of iron core 9. main current mutual-inductor Secondary Winding 10. compensation current transformer Secondary Winding, 11. power current transformer Secondary Winding 12. of iron core 8 power current transformers of iron core 7. compensation current transformers of 1. main current mutual-inductors, 2. compensation current transformers, 3. power current transformers, 4. operation coding devices, 5. Digital Microwave modulators, 6. main current mutual-inductors among the figure
Tested lead (12) penetrates main current mutual-inductor (1), compensation current transformer (2), power current transformer (3) one by one in figure one.With iron core (6), (7), (8) of idiostatic lead (13) with tested lead (12) and each mutual inductor, Secondary Winding (9), (10), (11) and operation coding device (4), the public ground (GND) of Digital Microwave modulator (5) is communicated with to get up, and allows their tools become idiostatic.
Main current mutual-inductor (1) carries out current sample to tested lead (12), collects to such an extent that current value is modulated into electric impulse signal through operation coding device (4).Pulse signal is modulated into the Digital Microwave signal through Digital Microwave modulator (5) and sends.The Digital Microwave signal is recalled to electric signal for instrument and meter (15) metering and demonstration after being received, decode by specific Digital Microwave signal receiver (14).
Power current transformer in the device (3) provides power supply for operation coding device (4), Digital Microwave modulator SIC (semiconductor integrated circuit) such as (5).Compensation current transformer (2) substitutes main current mutual-inductor work when the circuit underload, (load below 20%) measuring accuracy during with raising circuit underload.
Claims (1)
1. a microwave current transducer is made up of current transformer, operation coding device, Digital Microwave modulator, microwave channel, microwave signal receiver, instrument and meter, it is characterized in that: the SIC (semiconductor integrated circuit) electricity consumption before the microwave channel is provided by current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100710310A CN101581737A (en) | 2008-05-13 | 2008-05-13 | Microwave current transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100710310A CN101581737A (en) | 2008-05-13 | 2008-05-13 | Microwave current transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101581737A true CN101581737A (en) | 2009-11-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100710310A Pending CN101581737A (en) | 2008-05-13 | 2008-05-13 | Microwave current transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101581737A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163347A (en) * | 2013-03-13 | 2013-06-19 | 绍兴电力局 | Adjustable current transducer with high accuracy |
-
2008
- 2008-05-13 CN CNA2008100710310A patent/CN101581737A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163347A (en) * | 2013-03-13 | 2013-06-19 | 绍兴电力局 | Adjustable current transducer with high accuracy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20091118 |
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| RJ01 | Rejection of invention patent application after publication |