A fast detection device for cut-off frequency gear of signal conditioner

A signal conditioner and cut-off frequency technology, which is applied in the field of fast detection devices for cut-off frequency gears, can solve problems such as damage to the quality and reliability of wind tunnel tests, error filtering processing, etc., and achieve the effect of guaranteeing quality and test capabilities

Active Publication Date: 2020-11-03
INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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Problems solved by technology

Due to human error in the process of using the signal conditioner or the abnormality of the equipment itself, the working position of the cutoff frequency is abnormal, so that the front-end signal to be processed is filtered in a wrong way, resulting in the acquisition of the back-end measurement system. Large volumes of noise and interference data undermine the quality and reliability of wind tunnel tests

Method used

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  • A fast detection device for cut-off frequency gear of signal conditioner
  • A fast detection device for cut-off frequency gear of signal conditioner
  • A fast detection device for cut-off frequency gear of signal conditioner

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Embodiment Construction

[0041] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0042] Such as figure 1 As shown, the inventive device is mainly composed of four main modules: a signal injection module, a signal measurement module, a signal switching module, and a central processing module.

[0043] Signal injection module: The signal injection module provides a certain index of voltage signal, which is the signal source at the front end of the signal conditioner of the wind tunnel measurement system; at the same time, the signal injection module can provide other electrical signals, which can be selected according to the needs (including range and accuracy requirements); available A function generator or standard signal source equipment implements the signal injection function.

[0044] Signal measurement module: The signal measurement module can collect the output sign...

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Abstract

The invention discloses a cut-off frequency shift quick testing device of a signal conditioner. The cut-off frequency shift quick testing device comprises the components of a signal injection module which is used for supplying a signal source to the signal conditioner, a signal measuring module which is used for acquiring an output signal of the signal conditioner, a signal switching module whichis used for switching different input channels between the signal injection module and the signal conditioner, and a central processor which is connected with the three modules. The device can performchecking and conformation on the cut-off frequency of signal conditioning equipment before a wind tunnel test, thereby preventing testing quality reduction caused by incapability of performing filtering on a measuring system signal according to an expected shift in a wind tunnel testing period because of human factors or equipment self factors. Furthermore after the abnormity occurs, problems ofartificial rechecking and low abnormity checking efficiency are prevented, and data quality and testing capability of a wind tunnel measuring system are ensured.

Description

technical field [0001] Signal Conditioner The invention belongs to the field of electronic signal monitoring, in particular to a fast detection device for cutoff frequency gear of a signal conditioner in a wind tunnel measurement system. Background technique [0002] Signal conditioner In the wind tunnel test, the signal conditioner is one of the core equipment of the measurement system, the performance of the equipment will inevitably affect the result and quality of the wind tunnel test. Due to human error in the process of using the signal conditioner or the abnormality of the equipment itself, the working position of the cutoff frequency is abnormal, so that the front-end signal to be processed is filtered in a wrong way, resulting in the acquisition of the back-end measurement system. A large amount of noise and interference data undermine the quality and reliability of wind tunnel tests. Contents of the invention [0003] Signal Conditioner The purpose of the presen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/04
CPCG01M9/04
Inventor 范金磊宋元邓晓曼贾霜洪兴福蔄元臣阎成唐亮任朝旭李平黄辉
Owner INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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