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Improved Structure of Differential Integrator Acquisition Device

A technology of differential integrator and acquisition device, applied in the direction of differential amplifier, amplifier input/output impedance improvement, DC coupled DC amplifier, etc., to achieve high measurement accuracy, increase input impedance, and improve accuracy

Active Publication Date: 2018-01-30
CHENGDU ZHIRONG ZHICHUANG INTPROP MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, we hope to protect the important components in the integral measurement, but the existing devices cannot meet these requirements

Method used

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  • Improved Structure of Differential Integrator Acquisition Device

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Experimental program
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Effect test

Embodiment 1

[0016] Such as figure 1 As shown, the present invention includes two voltage followers, a fuse, an integrator A, an integrator B, a differential instrumentation amplifier, and a filter, and the integrator A, integrator B, and filter are all connected to the differential instrumentation amplifier, The signal terminal of an input signal Vin1 on the integrator A is connected to the voltage follower A, and the voltage follower A is connected to the fixed terminal a of the SPDT switch S1, and the moving terminal of the SPDT switch S1 is connected to the integrator A. The other input signal Vin2 signal terminal on the integrator A is connected to the voltage follower B, and the voltage follower B is connected to the fixed terminal a of the SPDT switch S2, and the moving terminal of the SPDT switch S2 is connected to the integrator A The signal output end of the filter is also connected to the port a of the switch S3, and the port c of the switch S3 is also connected to the buffer, t...

Embodiment 2

[0019] This embodiment is preferably as follows on the basis of Embodiment 1: After the fuse disconnects the connection path, in order to allow the operator to find out in time, the capacitor discharge control circuit is also connected to an alarm.

[0020] The backplane connector also connects to the capture card. The acquisition card can collect data information, perform digital compensation, and provide data acquisition sampling time, acquisition accuracy and zero offset and other indicators.

[0021] Both the fixed terminal b of the SPDT switch S1 and the fixed terminal b of the SPDT switch S2 are grounded. When the signal under test does not need to be connected, the moving end of the SPDT switch is grounded.

[0022] The input signal Vin1 and the input signal Vin2 are input using SMB coaxial cables. Support high-bandwidth communication to meet the integration measurement requirements of neutron imaging signals in the field of high-energy physics.

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PUM

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Abstract

The invention discloses an improved structure of a differential integrator acquisition device, including two voltage followers, a fuse, an integrator A, an integrator B, a differential instrument amplifier and a filter, and the integrator A, integrator B and filter Both are connected to the differential instrumentation amplifier, and the signal terminal of one input signal Vin1 on the integrator A is connected to the voltage follower A, and the voltage follower A is connected to the fixed terminal a of the SPDT switch S1, and the dynamic signal of the SPDT switch S1 Terminal connected to integrator A, another input signal Vin2 signal terminal on integrator A is connected to voltage follower B, and voltage follower B is connected to fixed terminal a of SPDT switch S2. Through the above principle, the present invention can realize the integral measurement of the measured signal, process the input signal to reduce the interference to the latter part, and perform analog compensation on the signal conditioning, with small offset and small drift. Integrator A is protected from being damaged by excessive current.

Description

technical field [0001] The invention relates to the field of signal integration measurement, in particular to an improved structure of a differential integrator acquisition device. Background technique [0002] In order to use the signal, people have to process it. For example, when the electrical signal is weak, it needs to be amplified; when it is mixed with noise, it needs to be filtered; when the frequency is not suitable for transmission, it needs to be modulated and demodulated; when the signal encounters distortion and distortion, it needs to be equalized ; When there are many signal types, it needs to be identified and so on. Signal processing is the process of extracting characteristic signals during the process of event changes, and processing such as de-interference, analysis, synthesis, transformation, and calculation to obtain information that reflects the nature of event changes or that the processor is interested in. Imaging signal processing systems have be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F1/56H03F3/45
Inventor 罗庆罗世培聂龙华沈军叶富强刘刚庞平
Owner CHENGDU ZHIRONG ZHICHUANG INTPROP MANAGEMENT CO LTD