High Signal-to-Noise Ratio Coaxial Cable Connectors for Current Measurement

A coaxial cable, high signal-to-noise ratio technology, applied in the direction of connection, connection component installation, two-component connection device, etc., can solve the problems of ns-kA current measurement system redundancy, etc., to avoid attenuators and high signal-to-noise ratio , the effect of easy installation

Active Publication Date: 2019-03-08
NORTHWEST INST OF NUCLEAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the invention is to solve the problem of redundancy of the ns-kA current measurement system of the existing pulse power system

Method used

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  • High Signal-to-Noise Ratio Coaxial Cable Connectors for Current Measurement
  • High Signal-to-Noise Ratio Coaxial Cable Connectors for Current Measurement
  • High Signal-to-Noise Ratio Coaxial Cable Connectors for Current Measurement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Such as Figure 5 As shown, the high signal-to-noise ratio coaxial cable connector installed on the surface of the installation workpiece 5 itself includes signal sampling and attenuation functions. At the same time, the gold-plated outer conductor 6 and the gold-plated inner conductor 7 at one end of the coaxial cable connector only need to be connected with the Rogowski coil 10, and the outgoing outer conductor 8 at the other end of the coaxial cable connector only needs to be connected with the oscilloscope 14 through the cable 12. Can measure ns-kA level current signal, see Figure 4 .

[0049] Consider a set of actual parameters: the number of turns of the Rogowski coil N=1000; the large resistor R for voltage division 1 =500Ω; a single parallel sampling resistor is 200Ω, and the number of parallel connections is n=4, so the sampling resistor R s =50Ω; cable impedance R 2 =50Ω. According to the formula Then U s (t) / i 1 (t) = 1 / 220V / A. If the current to be...

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Abstract

The invention belongs to the technical field of pulse power, and particularly relates to a high-signal-to-noise-ratio coaxial cable connector for measuring the current. The coaxial cable connector comprises a gold-plated outer conductor, a leading-out outer conductor, a threaded outer conductor, a leading-out inner conductor, a gold-plated inner conductor, a voltage-dividing large resistor and n parallel sampling resistors, wherein n is larger than or equal to 3. According to the technical scheme of the invention, the internal space of the connector and the characteristic impedance of a transmission cable are utilized for signal sampling and attenuation, so that no attenuator is adopted. The entire measurement system of the connector is compact. According to the connector, firstly, a sampling resistor Rs of a moderate resistance value is adopted to amplify a current signal. After that, a series circuit formed by a resistor R1 and a resistor R2 is adopted to attenuate both useful signals and noises. Therefore, the signal to noise ratio is high.

Description

technical field [0001] The invention belongs to the technical field of pulse power, in particular to a coaxial cable connector with high signal-to-noise ratio for current measurement. Background technique [0002] The signal measurement system generally consists of a signal acquisition unit, a cable connector (coaxial cable connector), a transmission cable, a signal conditioning unit, and a signal display unit (oscilloscope). [0003] In the pulse power system, the signal measurement system used to realize ns-kA level current such as figure 1 As shown, it includes Rogowski coil (10, hereinafter referred to as Rogowski coil), coaxial cable connector (11), cable (12), attenuator (13) and oscilloscope (14). Wherein the coaxial cable connector (11) such as Figure 7 As shown, it is used to connect the Rogowski coil (10) and the cable (12); the attenuator (13) is used to attenuate the voltage signal with relatively large amplitude to the acceptable amplitude range of the oscill...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R24/38H01R13/66H01R13/73H01R13/516H01R13/03H01R13/40
CPCH01R13/03H01R13/40H01R13/516H01R13/6616H01R13/73H01R24/38
Inventor 赵亮李锐喻斌雄李梅曾搏程杰苏建仓
Owner NORTHWEST INST OF NUCLEAR TECH
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