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图1所示电路采用了Dallas Semiconductor公司的DS1820型单线数字式温度计,用在多点温度测量系统中。DS1820型传感器可以测量分布温度,而且数据传输和电源供电只用一根传输线。并可方便地把这根单线的接口电路接至μC(在本例中为PIC16C63)。系统
The circuit shown in Figure 1 uses the Dallas Semiconductor DS1820 single-wire digital thermometer for multipoint temperature measurement. DS1820-type sensor can measure the distribution temperature, and data transmission and power supply using only one transmission line. This single-wire interface circuit can easily be connected to μC (PIC16C63 in this example). system