Method for communication between two-wire system devices based on polar Manchester code

The invention discloses a polar Manchester code-based communication method between two-wire system devices. The method comprises the following steps of: 1, sending query information of which the head position is provided with a flag bit to a slave device from a master device; 2, after the slave device receives the query information, if the flag bit is detected and the data is 01, the slave device replies the data to the master device and stores the replied data information; and step 3, the master device sends broadcast data, and each slave device determines whether to adopt the improved polarity Manchester encoding to decode the broadcast data to obtain corresponding data information based on whether to receive the query information with the flag bit, so as to realize data communication of any two slave devices. According to the polar Manchester code-based communication method between the two-wire system devices, two groups of data can be decoded by one section of code through improved polar Manchester coding