Pressure And Other Multi-parameter Test System Design, Dynamic Calibration And Application

For the practical testing needs of engine water pressure and cannon chamber pressure, a dynamic testing system and dynamic pressure calibration system based on cannon chamber pressure testing are designed and produced for multi-parameter such as pressure, angle displacement and so on For actual engine water pressure experiment, sensor is selected in according to the practical need and its performance. The basic circuit, multi-parameter testing system and application software are designed and made. The testing system also is be calibrated. In addition, the noise processing of power supply, interface circuit with computer and application of program language-VB are analyzed in details. On the basis of constructing the dynamic calibration system, all the interference and factor contribute to error are analyzed all around. The device used is calibrated by means of stationary and dynamic methods. a data processing method also is designed. All kinds of the testing system error is eliminated effectively by means of the method;In the practical application, the multi-parameter testing system, which is used in water pressure testing experiment of engine, can satisfy the need. All its characters fulfill the requirement。On the basis of the digital data processing,the decision of the cannon chamber testing system is less than 0.7%,which satisfy the need of setting cannon chamber pressure dynamic testing calibration system.