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High precision strain detection and simulation device adaptive for multiple sensor

A simulation device, high-precision technology, applied in the direction of measurement devices, instruments, special data processing applications, etc., can solve the problem of inability to adapt to a variety of strain sensors, transmitters, strain detectors, etc.

Inactive Publication Date: 2006-12-20
INST OF GEODESY & GEOPHYSICS CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
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Problems solved by technology

[0003] At present, among such instruments, there are more direct strain sensing transmitters and capacitive strain sensing transmitters in China, but there is no strain detector that can adapt to a variety of strain sensing transmitters.

Method used

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  • High precision strain detection and simulation device adaptive for multiple sensor
  • High precision strain detection and simulation device adaptive for multiple sensor
  • High precision strain detection and simulation device adaptive for multiple sensor

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Embodiment Construction

[0082] *Depend on figure 2 It can be seen that the circuits of the first buffer 1, the second buffer 3, the third buffer 5, and the fourth buffer 11 are the same, all including U 1 MAX400. The signal is input from terminal 3 and output from terminal 6. The voltage deviation of the input terminal is not more than ±2μV, and the temperature drift of the input terminal voltage is ≤0.03μV / ℃.

[0083] *Depend on image 3 It can be seen that the direct amplifier 2 includes U 2 The 235L module forms an inverting amplifier with a gain of G=30. The signal is input from the Vin terminal and output from the Vout terminal. The voltage deviation at the input terminal is not more than ±2μV, and the temperature drift of the input terminal voltage is ≤0.03μV / ℃.

[0084] *Depend on Figure 4 It can be seen that the AC amplifier 4 includes U 3 MAX400 composes an AC proportional amplifier with the same phase, and the gain is G=30. The signal is input from the Vin terminal and output from...

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Abstract

This invention discloses a strain test artificial device with high accuracy adapting to multi-sensor. This invention comprises direct enlargement channel A, locking phase enlargement channel B, digit analogue signal generator C, DSP and virtual meter terminal D. The direct enlargement channel A comprises the first buffer 1 and direct enlargement device 2 connected together; the enlargement channel B comprises second buffer 3, alternating enlargement device 4, third buffer 5, phase detector 6 and amplitude stabilizer oscillator 7; the digit analogue signal generator comprises first serial communication interface 8, first single machine 9, D / A converter 10, and fourth buffer 11; the DSP and its virtual meter terminal D comprises multiple-path switch 12, A / D converter 13, second single machine 14, second serial communication port 15, and PC terminal 16

Description

technical field [0001] The invention relates to a strain detection instrument, in particular to a high-precision strain detection simulation device adapted to various sensors. Background technique [0002] Strain detection technology is widely used for the identification of various engineering construction and quality, for the response identification of various products and devices under stress, and for the basic theory and experimental research of geosciences. Generally used in engineering and material performance research, the strain detection accuracy is 10 -4 level, the minimum output voltage of the strain sensor is mostly millivolt level voltage; for some special researches such as the earth tide strain detection, the detection accuracy is 10 -10 The minimum output voltage of the strain sensor is generally above ±100μv. The weak signal detection capability of some domestic strain detection instruments generally requires that the minimum input signal must be above ±10μ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/00G06F17/00
Inventor 潘显章谢中华
Owner INST OF GEODESY & GEOPHYSICS CHINESE ACADEMY OF SCI
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