说明：  美国 Dallas 半导体公司生产的数字化温度传感器 DS18B20,采用导热 性高的密封胶灌封，保证了温度传感器的高灵敏性，极小的温度延迟。该温 度传感器支持“一线总线”接口（1-Wire），现场温度直接以“一线总线” 的数字方式传输，大大提高了系统的抗干扰性。适合于恶劣环境的现场温度 测量。DS18B20 数字温度传感器都具有唯一的编号，温度采集设备通过编号 来识别对应的温度传感器器。
(The digital temperature sensor DS18B20 produced by Dallas semiconductor company of America adopts heat conduction. The high sealing sealant ensures the high sensitivity of the temperature sensor and the minimal temperature delay. The temperature The degree sensor supports the "1-wire bus" interface (1-Wire), and the field temperature is directly based on the "1-wire bus". The digital mode transmission greatly improves the anti-interference capability of the system. Site temperature suitable for harsh environment Measurement. DS18B20 digital temperature sensors have unique numbers, and temperature collection devices are numbered. To identify the corresponding temperature sensor.)