求翻译：将脉冲调制光源的光信号转换为电信号，因光电转换的信号十分微弱，需对信号放大和滤波处理，并进行模数转换，最后利用单片机进行数字信号的处理。是什么意思？

Converts the optical signal of the pulse modulated light into an electrical signal is very weak due to the photoelectric conversion signal processing, the need for signal amplification and filtering, and analog to digital conversion, and finally the use of single-chip digital signal processing.

Pulse modulation of the light source to convert optical signals to electrical signals, and the photoelectric conversion of the weak signal 10, you will need to signal processing, amplification and filtering and analog to digital conversion, and finally using a single chip for digital signal processi

正在翻译，请等待...

Optical signal into electrical signal of pulse-modulated light source, for photoelectric conversion signals are very weak, needed for signal amplification and filtering, and analog to digital conversion, finally using single-chip digital signal processing.

正在翻译，请等待...