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Device used for wind tunnel strain type balance state-of-health monitoring

A healthy state, strain-type technology, applied in the field of wind tunnel experiments, can solve the problems of large volume, achieve small volume, reduce volume, and facilitate the traceability of failure causes

Active Publication Date: 2017-04-26
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device adopts carrier technology, which can effectively filter out interference signals and has high acquisition accuracy, but it is large in size and is not suitable for frequent moving scenes such as model disassembly and transportation.

Method used

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  • Device used for wind tunnel strain type balance state-of-health monitoring
  • Device used for wind tunnel strain type balance state-of-health monitoring
  • Device used for wind tunnel strain type balance state-of-health monitoring

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Embodiment Construction

[0029] The technical solution of the present invention is: the main control circuit of the present invention, the signal conditioning and acquisition circuit, the battery charge and discharge power management circuit, the alarm indication circuit, the data display module, the battery and the casing.

[0030] The signal conditioning acquisition circuit includes collecting the balance excitation voltage, battery voltage and balance six-component signal, performing A / D conversion after amplification and filtering, and sending the A / D converted data to the main control circuit; receiving the alarm signal sent by the main control circuit and Send to the alarm indication circuit;

[0031] The battery charge and discharge power management circuit controls the battery charge and discharge, and provides stable power supply for the wind tunnel strain-type balance health status monitoring device and balance;

[0032] The main control circuit receives the signal and adjusts the balance ex...

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Abstract

The present invention relates to a device used for wind tunnel strain type balance state-of-health monitoring. The device comprises a main control circuit, a signal conditioning acquisition circuit, a battery charging and discharging power source management circuit, an alarm indication circuit, a data display module and a battery. The device of the invention is suitable for conditions where portability is required in wind tunnel model installation, balance transport and the like. The size of the device is decreased as much as possible with measurement accuracy satisfied under a condition that high accuracy is not required. According to the device of the invention, an embedded system is adopted; a high-energy-density battery is adopted, so that reliance on a fixed power source is decreased; and therefore, the device is has the advantages of small size, light weight, portable convenience and convenience in use. Judgment is performed on based on delta Vtj / Vtj; a requirement for a high-precision power source is eliminated; and the size of the device is decreased with the accuracy of the device ensured within an accepted range.

Description

technical field [0001] The invention relates to a device for monitoring the health state of a wind tunnel strain balance, which belongs to the field of wind tunnel experiments. Background technique [0002] A wind tunnel balance is a device used to support a model and measure the magnitude, direction and point of action of the aerodynamic forces acting on the model. A balance that uses a resistance strain gauge pasted on the balance element as a transducer to measure the corresponding aerodynamic force (moment) is called a wind tunnel strain balance. This type of balance is precision equipment, and it is easy to cause damage due to vibration and shock during transportation and knocking during installation and use. Monitoring the health status of the balance during transportation and use, and recording the data of the balance damage process are of great significance for tracing the cause of balance damage and protecting the balance. [0003] Balance damage is mainly caused ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/06
CPCG01M9/062
Inventor 刘吴月孙日明袁明伦李辰宋可清李海燕毕志献陈星张冰冰
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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