Electric retractable door remote control works

Electric retractable door remote control works

Electric retractable door remote control is a remote control device that uses radio signals to control various remote institutions. After these signals are received by remote receiving devices, they can command or drive various other appropriate mechanical or electronic devices to complete various operations, such as closing the circuit, moving the handle, and starting the motor, and then performing the required operations by these machines. As a kind of remote controller complementary to infrared remote controller, it has been widely used in garage doors, electric doors, remote control of barrier gates, burglar alarms, industrial control, and wireless smart home.

Commonly used electric retractable door remote control system is generally divided into transmitting and receiving two parts.

The launch part is generally divided into two types, remote control and transmission module. The remote control and remote control module are for use. The remote control can be used as a complete machine. The external lead wire has a wiring pile head; The module is used as a component in a circuit and is applied according to its pin definition. The advantage of using the remote control module is that it can be seamlessly connected with the application circuit, small in size, low in price, and use for the best, but the user must really understand the circuit. Principle, otherwise it is convenient to use a remote control.

The receiving part is generally divided into two types, ie, superheterodyne and super-regenerating receiving methods. The super-regenerative demodulating circuit is also called a super-regenerative detecting circuit. It is actually a regenerative detecting circuit operating under intermittent oscillation. The super-heterodyne demodulation circuit is the same as the superheterodyne radio. It sets a local oscillation circuit to generate an oscillation signal. After being mixed with the received carrier frequency signal, an intermediate frequency (typically 465 kHz) signal is obtained, and the intermediate frequency is amplified and amplified. Detects and demodulates the data signal. Because the frequency of the carrier frequency is fixed, its circuit is simpler than the radio. The super-heterodyne receiver is stable, high-sensitivity and anti-jamming capability is relatively good; the super-regenerative receiver is small and cheap.

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