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At present, the technology of the intelligent sensor is in booming period, representative products are typical American honeywell ST series intelligent transmitter and German sterman company 2 d acceleration sensor, and the other containing the microprocessor (MCU) monolithic integrated pressure sensors, smart sensors with multidimensional detection ability and solid image sensor (SSIS), etc. At the same time, the new intelligent sensor based on fuzzy theory and neural network technology in the research and development of intelligent sensor system is also increasingly being the important functions of the relevant researchers of great importance to it. Despite all the digital intelligent sensor system itself, but its communication protocol is still need to be by means of 4 ~ 20 mA standard analog signals. Some international standardization research institute is currently actively study the relevant general fieldbus digital signal transmission standards; However, in the current transition stage are still mostly USES the long distance bus addressing sensor (HART) protocol, namely Highway Addressable Remote Transducer. This is a kind of communication protocol suitable for intelligent sensor, and currently use 4 ~ 20 ma analog signal of the system is fully compatible with, analog signals and digital signals can communicate at the same time, so that different manufacturer's product has the versatility. Relevant search: temperature sensors, dongguan dongcheng power sensors, guan city power sensors, south side temperature sensor, temperature sensor in shenzhen, dongguan, capacitor, dongguan power sensors, foshan capacitor |