Encoding and decoding method for wireless radio frequency remote control

Abstract

The invention provides an encoding method for wireless radio frequency remote control, which is characterized in that a wireless radio frequency remote controller sequentially sends data frames consisting of boot codes, start codes, function codes and check codes to a receiver. Meanwhile, the invention further provides a decoding method which corresponds to the encoding method. Due to that the data frames for remote control encoding adopt Manchester codes, the frequency band occupied by signal transmission is narrow; the check of remote control encoding data adopts CRC check, thereby providing lower bit error rate; and the data frames for remote control encoding increase the boot codes, thereby leading the average value during detection after the remote controller receives data codes to be smooth and improving the signal-to-noise ratio of the detection.

Description

technical field [0001] The invention relates to the signal coding and decoding technology in the field of radio frequency remote control. Background technique [0002] The coding solution method of the traditional radio frequency remote control is that the radio frequency remote control device sends data frames to the receiving device. and turn left, go forward and turn right, go back and turn left, go back and turn right, etc., where the data frame described is as figure 1 As shown, it is composed of a start code W2 and a function code W1. The start code W2 is a synchronization pulse with the same 4 cycles. The synchronization pulse, such as figure 2 As shown, it is composed of data pulses with a duty cycle of 75%. The function code W1 is composed of m data pulses. The data pulses are composed of high and low levels with a duty cycle of 50%. When the number of m is different, it represents Different functions, such as forward is represented by 4 sync pulses and 10 data p...

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Problems solved by technology

[0003] The disadvantage of the above method is that the number of data pulses of each function bit is large, and the number of pulses when realizing various functions is inconsistent, the frequency bandwidth occupied, the remote control response is slow, and the data frame sent by the transmitting device cannot be verified at the same time. The data is susceptible to interference from external signals

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