This part of the circuit is mainly composed of 315MHz wireless data receiving module, decoding integrated PT2272, D flip-flop 4013 and relay circuit. There are two kinds of 315MHz wireless data receiving modules: super-regenerative receiving module and super-heterodyne receiving module. The performance of super-regenerative and super-heterodyne circuits have their own advantages and disadvantages. The receiving sensitivity of the super-regenerative receiving module is -105dBm, the anti-interference ability is poor, and the frequency is subject to large temperature drift. The copper core inductance with the skeleton is adjusted to 315MHz and then sealed. The temperature, humidity stability and resistance to mechanical vibration are greatly improved. The superheterodyne receiver module has strong anti-interference ability, its own radiation is extremely small, and the back is shielded by a meshed ground copper foil, which can reduce the leakage of its own oscillation and the intrusion of external interference signals; The signal is a short needle pulse, unlike the super regenerative receiving circuit will produce a dense noise waveform, but there may be blocking phenomenon when the signal is strong at close range. Four-way remote control receiving circuit:
Solar home energy storage power supply
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