智能仪表中的频率测量方法

A Method of Frequency Measurement of the Intelligent Instrument

介绍了一种适用于智能仪表的频率测量方法 ,无须增加任何硬件开销 ,即可完成频率测量 .对适用于单片机应用的两种频率信号测量方法进行了比较 ,详细阐述了频率信号测量中“计数”与“计时”间软同步的实现方法 。

A method of frequency measurement of the intelligent instrument was introduced. It can perform frequency measurement without any additional hardware. The comparison of two measurement methods of the frequency signals applied in the microprocessor fields was studied. The paper also disserted how to achieve the software synchronous between counting and timing in the frequency measurement. The measure errors of the method are also analyzed in this paper.