First of all, we need to understand the working principle of photoelectric encoder. A photoelectric encoder usually consists of a photoelectric sensor and an encoding disk. There are many black and white stripes engraved on the encoding disk. When the encoder rotates, the photoelectric sensor will detect the change of black and white stripes and output pulse signals. By calculating the pulse number and direction, the position and motion state of the object can be determined.
Next, you need to choose the appropriate interface mode. There are two common interface modes: serial port and pulse interface. Serial port needs to use serial communication protocol, which can communicate through UART module of single chip microcomputer. The pulse interface directly outputs the pulse signal, which can be counted by external interrupt of single chip microcomputer or counter module.
Finally, you need to write the corresponding program. For serial interface, it is necessary to write the sending and receiving program of serial communication protocol. For the pulse interface, it is necessary to write the interrupt service program of external interrupt or counter module, as well as the program to calculate the number and direction of pulses.
In a word, the connection between photoelectric encoder and single chip microcomputer needs to choose the appropriate interface mode and write the corresponding program. In practical application, factors such as signal stability and anti-interference ability need to be considered to ensure the reliability and stability of the system.