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Measurement and control system capable of isolating strong impulse interference

A technology of measurement and control system and strong pulse, applied in the field of measurement and control system, can solve problems such as test system damage, and achieve the effect of reducing damage, low cost and reducing range

Active Publication Date: 2014-02-12
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is found that about ±100V AC signal is coupled into the wire, if the interference signal is not suppressed, it will cause damage to the test system
At the same time, while suppressing the interference signal, it cannot cause the loss of the useful signal

Method used

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  • Measurement and control system capable of isolating strong impulse interference
  • Measurement and control system capable of isolating strong impulse interference
  • Measurement and control system capable of isolating strong impulse interference

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 As shown, a measurement and control system capable of isolating strong pulse interference is used for high-energy pulsed gas lasers with pulsed power supplies, and is characterized in that:

[0026] The pressure transmitter 4 is connected to the discharge chamber 7, and is responsible for measuring the gas pressure in the discharge chamber when the discharge circuit composed of the pulse high-voltage power supply 1, the discharge anode 2, and the discharge cathode 3 discharges the gas in the chamber;

[0027] The isolation circuit 5 is connected to the electrical signal output of the pressure transmitter 4 to sample the output signal; and can realize complete electrical isolation of input and output signals; and realize linear conversion of input and output;

[0028] The acquisition system 6 is connected with the output of the isolation circuit 5, collects the non-interference signal output by the isolation circuit into the computer system, and displays...

Embodiment 2

[0043] The output signal of the pressure transmitter is a 4-20mA current signal, so the figure 2 way to make electronic circuit boards. The input terminal is connected to the output of the pressure transmitter, and the output terminal is connected to the acquisition system. Select suitable electronic components so that the linear coefficient of the optocoupler is:

[0044] K3=K1 / K2=1 (1)

[0045] In this way, the relationship between the output voltage Vout and the input current Iloop can be obtained:

[0046] Vout / IlooP=K3*R3*R5 / (R3+R5) (2)

[0047] The applicant chooses R3 and R5 to be 25Ω and 80KΩ respectively, so that the input 4-20mA current signal is linearly converted into a 0.8-4V voltage signal

[0048] The invention works by isolating the interfering signal coupled to the transmission line of the pressure transmitter during high power pulse discharge. It effectively reduces the amplitude of the strong pulse interference and prevents the damage of the strong pul...

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Abstract

The invention discloses a measurement and control system capable of isolating strong impulse interference. The measurement and control system comprises a pressure transmitter, an isolating circuit and a collecting system. The pressure transmitter is connected with a discharging cavity, and is used for measuring the pressure of the gas inside the discharging cavity when a discharging circuit discharges for the gas inside the cavity. The isolating circuit is connected with the output end of the pressure transmitter, and is used for sampling output electrical signals to electrically isolate input signals from the output signals and to achieve linear conversion between the input signals and the output signals. The collecting system is connected with the output end of the isolating circuit, and is used for collecting clear signals output by the isolating circuit to a computer system, and the clear signals are displayed through measurement and control software. According to the measurement and control system, interference signals coupled to a testing signal transmission line are isolated in the period of discharging to high-power impulses, and therefore the amplitude of the interference of strong impulses is effectively reduced, the damage to a testing system from the strong impulse interference signals is prevented, and the signals cannot lose. The measurement and control system has the advantages of being compact and ingenious in structure, safe, reliable, convenient and fast to use and the like.

Description

technical field [0001] The invention relates to a measurement and control system capable of isolating strong pulse interference, which is applied to a high-energy pulse gas laser with a pulse power supply. Background technique [0002] Oxygen-iodine chemical laser is the chemical laser with the shortest wavelength at present. It has the characteristics of high energy, high efficiency, excellent beam quality and low loss fiber transmission efficiency. However, with the in-depth research on the interaction between laser and matter, high-energy pulsed laser has attracted more and more international attention. Studies in cutting, target destruction, oil drilling, etc. have confirmed that with appropriate pulse frequency and laser energy, the plasma effect and nonlinear effect caused by high-energy continuous wave laser on the surface of the material can be avoided, and the penetration depth is deeper and the speed is higher. faster. Continuous wave high-power laser will produc...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 于海军李国富多丽萍金玉奇桑凤亭汪健王增强
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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