Working principle of ask wireless receiving module

Working principle of ask wireless receiving module

Ask receiving module is widely used in daily life due to its low cost and convenient use. Many products integrate ask wireless receiving module and ask wireless receiving module. The products include the receiving end of car remote control key, remote control rolling shutter door, remote control parking lot railing and so on.

The handheld part of this kind of products is the remote control, which integrates the ask transmitting module and the ask receiving module.

The working principle of ask receiving module is also relatively simple. The core of ask receiving module is to demodulate the amplitude modulation signal with frequency of 433.92mhz (or 315MHz) into digital signal, and then MCU decodes the digital signal and converts it into general binary signal.

Circuit diagram of ask receiving module:

Working principle of ask receiving module:

Convert the received AM signal into digital signal and output it through do. MCU receives the digital signal and demodulates the binary signal. As shown in the figure: