In this section, the DS18B20 temperature sensor is introduced, including its function, structure, driving method, etc. (1) Introduction to DS18B20 temperature sensor The DS18B20 digital thermometer provides 9-bit to 12-bit (configurable) temperature readings, indicating the temperature on the device. Data information is transmitted through a 1Wire interface, that is, only one line is needed to connect many DS18B20s to the central processor. At the same time, the power supply for reading data and temperature conversion can also be provided through the data line without the need for an external power supply. Since each DS18B20 has a unique serial number inside, multiple DS18B20s can exist on the 1Wire bus at the same time. In this way, multiple temperature sensors can be placed in different locations. It can be widely used in environmental control, measurement of internal temperature of buildings, equipment or machines, and process monitoring and control.
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