Design and research of wireless thermometer based on Bluetooth 5.0
Temperature is a very important physical parameter in freezing field excavation engineering such as tunnel and mine,which plays a decisive role in construction safety and progress.A multi-point wireless temperature measurement system based on nRF52832 Bluetooth chip,STM32F429 microcontroller and single-bus DS18B20 temperature sensor is proposed in this paper.The system uses nRF52832 chip running Bluetooth 5.0 protocol stack as the control core of acquisition terminal and instru-ment gateway,and STM32F429 chip as the core control end of instrument.Each temperature measuring terminal is equipped with a single bus DS18B20 device,which forms a star network with the gateway.The gateway is responsible for transmitting the acquisi-tion terminal data to the STM32F429 through the serial port,and the latter is responsible for the task scheduling and control of the thermometer.After testing,the temperature measuring system shows stable and reliable temperature data acquisition,portable ac-quisition and monitoring,and has ultra-low power consumption characteristics.
Bluetooth 5.0frozen layermultipoint wireless temperature measurement systemportable
NETL
NSTL
万方数据
