Software Design of Intelligent Quartz Crystal Vacuum Gauge Qi Bensheng, Wang Huaping, Ling Mingfang (Department of Information and Electronic Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China). The V/F-converted output signal fp and quartz-crystal resonant frequency fc collected by a single-chip microcomputer are collected and filtered by software, and a combination of timed interruption and external pulse count interruption is used to improve the accuracy of the acquisition. Through a large number of monotonicity due to the /cT relationship, the ZT relationship can be transformed into a Z/c relationship to consider setting AZ' as an additional shift due to the shift of the temperature of the crystal impedance due to the temperature at different temperatures, thus having hingfe. Qi Bensheng, et al.: Intelligence. Quartz crystal vacuum gauge software design a total of 6 bytes. Among them, ID is a multi-frame identification word, the program is set to A5H; GAS is a gas type, including air oxygen, chlorine, argon, etc.; TEMPR is temperature data, by /,. Converted; DHDL is the high and low 8-bit data of fp respectively; SUM is the check sum, which is obtained by accumulating the first 5 bytes. It is used to determine whether the data has errors in the transmission process. 4 Experimental results In order to determine the accuracy of the quartz crystal vacuum gauge, a 2D quartz vacuum gauge and a condenser vacuum gauge manufactured by MKS, USA were connected to the same vacuum test system for comparative test. The condenser vacuum gauge manufactured by MKS is used as a standard gauge and its measurement error is in the entire measuring range. Predictive control. Beijing: National Defense Industry Press, 1993. An excavator hydraulic breaker is a powerful attachment that is used with excavators to break or demolish hard materials like concrete, rocks, and asphalt. It is also known as a hydraulic hammer or a rock breaker. The hydraulic breaker is attached to the excavator's arm and is operated by the hydraulic system of the excavator. The hydraulic pressure generated by the excavator's hydraulic system is used to power the breaker's piston, which strikes the material with great force. The hydraulic breaker is commonly used in construction, demolition, and mining industries. It is designed to provide high productivity, low maintenance, and long-lasting performance. Exca Breaker,Excavator Rock Breaker,excavator Hydraulic Breaker,Poclain Rock Breaker CATSU Hydraulic Machinery Equipment Co.,Ltd , https://www.tiltrotatorcat.com
Software Design of Intelligent Quartz Crystal Vacuum Gauge
Core Tips: Software Design of Smart Quartz Crystal Vacuum Gauge Qi Bensheng, Wang Huaping, Ling Mingfang (Department of Information and Electronic Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China). The resonant frequency fc of the V/F-converted output signal fp and the quartz crystal oscillator collected by the single-chip microcomputer is collected and filtered by the software.