Introduction of the working principle of the wireless smart doorbell outdoor unit
Many people are using wireless doorbells now, because smart homes are more and more widely used, but many people still don't know much about wireless doorbells. Let Jiasong editor introduce the working principle of the outdoor unit to everyone:
1. The outdoor unit uses the microphone and camera to collect voice and image signals, and then the outdoor unit can convert the collected wireless signal into a digital signal. Then the main processor of the outdoor unit can perform certain compression and enhancement processing on the voice and image signals, and finally the main controller transmits the compressed signal through the wireless transmitter;
2. Peripherals are needed, for example, the signal generated by the doorbell button can be directly transmitted through the wireless transmitter;
3. When the wireless receiver receives the wireless signal of the indoor unit, the main processor will decode the received voice signal, and then convert it into a digital-to-analog conversion to an analog signal, and play it out through the speaker;
4. Generally speaking, the wireless signal receiver can receive the signals transmitted by the indoor unit, and then the main processor can convert those received signals into the control commands of the lock, and then can pass the short-distance wireless transmission device. The device generally uses the 433 signal to transmit to the unlocking controller.