Design of domestic production temperature measurement module based on national technology MCU
Design a thermal resistance measurement module based on the domestic chips,using N32G45X MCU as a processor and Ruimeng MS5194T as temperature measuring chip,using CA-IS3742HW isolation,the module has the ability of hot-plug,using full-duplex serial 422 realize data communication with other modules,through the MCU GPIO pin connected to the communication chip en-able send signal to control the module,avoid other modules from receiving incorrect data.Analysis of second line wiring,three line wiring,four wire wiring mode and error,exchange constant exciting current channel while measuring the REF resistance terminal voltage and using the same reference voltage to measure the thermal resistance,through the high and low temperature test verify its feasibility and accura-cy,the module all based on the domestic components,ensure the security of the chip supply chain.
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维普
