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Acceleration measurement device and data acquisition method based on range switching

A technology of acceleration measurement and range switching, which is applied in the direction of acceleration measurement using inertial force, etc., can solve the problems of increased acquisition noise, limited dynamic range of the circuit, and reduced range, etc., and achieve the effect of large measurement range and strong versatility

Active Publication Date: 2016-07-06
TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dynamic range of the circuit is limited, and when the range is large, the acquisition noise also increases; when the noise is small, the range becomes smaller

Method used

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  • Acceleration measurement device and data acquisition method based on range switching
  • Acceleration measurement device and data acquisition method based on range switching
  • Acceleration measurement device and data acquisition method based on range switching

Examples

Experimental program
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Effect test

Embodiment 1

[0061] Such as figure 1 As shown, an acceleration measurement device includes an accelerometer 1, a range switching module 2, a first signal preprocessing module 3, a second signal preprocessing module 4, and a signal processing and control unit 5;

[0062] Accelerometer 1, used to collect acceleration information of the external environment;

[0063] The range switching module 2 is used to connect with the first signal processing module 3 or the second signal processing module 4 according to the control signal sent by the signal processing and control unit 5, and send the collected acceleration information to the first signal processing module 3 or the second signal processing module Two signal processing module 4;

[0064] The first signal preprocessing module 3 is used for preprocessing the received acceleration information;

[0065] The second signal preprocessing module 4 is used for preprocessing the received acceleration information;

[0066] The signal processing an...

Embodiment 2

[0080] Such as figure 2 As shown, an acceleration measurement device includes a first accelerometer 6, a second accelerometer 7, a first signal preprocessing module 3, a second signal preprocessing module 4, and a signal processing and control unit 5;

[0081] The first accelerometer 6 is used to collect the acceleration information of the external environment and send it to the first signal preprocessing module 3;

[0082] The second accelerometer 7 is used to collect the acceleration information of the external environment and send it to the second signal preprocessing module 4;

[0083] The first signal preprocessing module 3 is used to preprocess the acceleration information and send it to the signal processing and control unit 5;

[0084] The second signal preprocessing module 4 is used to preprocess the acceleration information and send it to the signal processing and control unit 5;

[0085] The signal processing and control unit 5 is used to compare the preprocessed...

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Abstract

The invention relates to an acceleration measurement device and a data acquisition method based on range switching. The acceleration measurement device comprises an accelerometer, a range switching module, a first signal preprocessing module, a second signal preprocessing module and a signal processing and control unit. The accelerometer acquires acceleration information. The range switching module is connected with the first signal processing module or the second signal processing module according to a control signal and transmits the acceleration information to the first signal processing module or the second signal processing module. The first signal preprocessing module and the second signal preprocessing module respectively preprocess the acceleration information. The signal processing and control unit compares the preprocessed acceleration information with a preset value and generates the control signal to be transmitted to the range switching module. If the acceleration information is greater than the preset value, the range switching module is controlled to be connected with the first signal preprocessing module; and if the acceleration information is less than the preset value, the range switching module is controlled to be connected with the second signal preprocessing module. Different acceleration measurement requirements can be met.

Description

technical field [0001] The invention relates to microgravity scientific experiment equipment, in particular to an acceleration measuring device and a data acquisition method based on range switching. Background technique [0002] The accelerometer is an inertial device widely used in various instruments and equipment such as aerospace, military industry, industry, and life. Depending on the application, the selected accelerometer is also different. There are different types of accelerometers. [0003] Quartz flexible accelerometers are generally used in inertial measurement applications. However, the quartz accelerometer also has a difference between a large range (such as ±10g) and a small range (such as ±2g or less) according to the difference of the flexible piece. Accelerometers with a large range have poor accuracy (generally greater than 100ug), while accelerometers with better accuracy (for example, on the order of 10ug) generally have a smaller range. [0004] In...

Claims

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Application Information

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IPC IPC(8): G01P15/08
CPCG01P15/08
Inventor 吕世猛董文博王洪阳于梦溪张永康
Owner TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI
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