Apparatus for detecting precision of pressure scan system sensor in real time

Abstract

The invention discloses an apparatus for detecting precision of a pressure scan system sensor in real time. Pressure transducers acquire pressure outputted by a sensor calibration system and send the pressure to a multi-path converter, and simulation pressure data is obtained. Through an AD converted, digital signal pressure data is obtained, through pressure scan acquisition system serial scanning, real-time pressure data is obtained, and simultaneously through high speed parallel acquisition card parallel acquisition, parallel data is obtained and transmitted to an industrial controller. The industrial controller transmits the parallel data to a pressure calibration source, pressure calibration is carried out on each pressure transducer respectively, and calibration data is obtained. The industrial controller takes the calibration data as a pressure standard, carries out precision grade detection on corresponding real-time pressure data, and detects a precision grade of the pressure transducers respectively. According to the invention, detecting precision of the pressure scan system sensor in real time can be carried out, a method is simple and reliable, and practicality is strong.

Description

technical field [0001] The invention relates to the technical field of calibrating pressure scanning system sensors, in particular to a device for calibrating the accuracy of pressure scanning system sensors in real time. Background technique [0002] The pressure scanning system is a pressure scanning pressure acquisition instrument, which is mainly used for the acquisition of airfoil surface pressure distribution and cave wall pressure in wind tunnel experiments. The pressure scanning system is composed of multiple pressure data channels. For example, the current general 9816 Ethernet intelligent pressure scanning system can scan and collect up to thousands of pressure data channels at the same time. The core of the pressure data channel is the pressure sensor. During the process of scanning and collecting data from the pressure sensor, there will be sensor acquisition errors due to various reasons. This problem is not easy to be found in real-time acquisition, which oft...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the prior art that the accuracy of pressure scanning system sensor cannot be verified in real time and the quality of the sensor is reduced, the present invention provides a device for real-time verification of the sensor accuracy of the pressure scanning system, which overcomes the problem that the traditional technology can only verify the accuracy of a single pressure sensor Problems, the real-time verification of the accuracy of the pressure scanning system sensor can detect in time the decrease in the collection accuracy of the pressure sensor and the deterioration of the data collection quality, so as to ensure the accuracy of the data collected by the pressure scanning system sensor

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