Application of Entire Synchronization in Frequency Measurement for SAW Sensors

The high precision measure frequency is a key technology in SAW gas sensors, because the output of SAW CO gas sensors is frequency. This paper takes the SAW CO gas sensor as an example. Based on the analyzing currently method of measure frequency, the principle of high quality measure frequency for SAW CO gas sensors is brought forward with the aid of the entire synchronized mechanism. And the system structure of measure frequency and electronic element are presented.