基于单片机的遥控扩音装置设计-学位论文.doc

wireless remote control, infrared remote control, etc. The main function of the infrared remote control receiver is to convert the infrared light signals sent by the remote control transmitter into electrical signals, amplify, limit, detect, and shape them to form remote control command pulses, and output them to the remote control microprocessor. In this design, a universal infrared remote control is used, and an integrated infrared receiver is used to receive the infrared signals and convert them into level signals. The STC12C2052 microcontroller is used as the remote control microprocessor to process the received signals and complete the command requirements of the remote control. The role of the infrared remote control module is to receive the instructions transmitted by the remote control through the infrared receiver, and output instructions to control the resistance value of the X9511 digital potentiometer, thereby controlling the output voltage of the audio signal and controlling the amplification factor of the power amplifier to adjust the speaker output volume. Keywords: microcontroller, microprocessor, infrared remote control, speaker