【摘要】 介绍一种集转速、频率与温度测量于一体的多功能一体化仪表设计方法.测量转速与频率时,通过MCS-51单片机的内部定时器及外部中断口,测算出外部输入转速信号、频率信号的周期长度,并换算成相应的转速与频率值.温度测量时,应用美国Dallas半导体公司研制的新型单线总线式数字化温度传感器,DS18B20获取现场温度信号,并通过单片机处理显示所测量温度值.更多还原

【Abstract】 Multifunctional meter integrated with tachometer,thermometry and frequency measuring was designed.Based on internal timer and external interrupt of MCS-51 Microprocessor,external input rotating speed signal,cycle length of frequency signal and relevant conversion to the value were achieved.Digital temperature sensor of single track bus produced by Dallas Semiconductor was used for measuring temperature, which was obtained by DS18B20 and displayed by means of Microprocessor.更多还原