Digital multi-meter automatically-calibrating system based on the virtual instrument technology

• Main Authors: SUN CHANGHE, DENG ZHIJUN, YANG YINGXUAN, ZHANG YAN, ZHOU JIE, LIU HUA, LI WEIBING, ZHI YUANQING, SONG JINLIANG, WANG ZHOUNING, ZHANG LISHA
• Format: Patent
• Language: Chinese; English
• Published: 01.05.2013
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The utility model relates to a digital multi-meter calibrating system based on virtual instrument technology, belongs to the field of automation, and especially relates to a digital multi-meter automatically-calibrating system based on the virtual instrument technology. According to the utility model, a communication module is adopted as a communication base. An upper computer is connected with a physical device through an RS-232 or an IEEE488 communication interface. A VDM (Virtual Digital Meter) is adopted for recognizing instructions and a data processing module is utilized for processing converting data. Computer technology is utilized fully in a measuring and control field. Upper computer software is adopted as a control core. Data sampling of a standard device and a device to be calibrated is realized and manifold cycle error calculation of the standard device and the device to be calibrated are realized through A/D conversion and by adopting the communication interfaces. The communication interfaces ad