基于锁相环的光电传感器信号调理电路

Adjustment Circuit of Photo-electricity Sensor Signal Based on Phase-locked Loop

介绍了梳状光电传感器的工作原理。在分析传感器信号的基础上 ,用 SD- 380动态分析仪对信号作了频谱分析。基于锁相环 CD4 0 4 6 ,设计了适合于处理该信号的具体电路。试验证明 ,该电路跟踪速度快 ,捕捉时间短。基于此技术制作的车速仪 ,测量精度高 。

The principle of the screen photo-electricity sensor is introduced.Based on the analysis of the sensor signal,the frequency spectrum is analyzed with SD-380 dynamic analyzer.According to PLL CD4046,the circuit adaptable to adjust the signal is designed.In the test,it is proved that the speed of following up the signal of the circuit is fast.And the catch time of the circuit is short.The speedometer based on the technology has high precision and avoids the defects of the five-wheel meter.