A device for transmitting alarm low-frequency signal through mains line

Abstract

The invention discloses a device of using a mains supply line for transmitting alarm low-frequency signals. The device comprises a case, a communication controller is arranged in the case, a block relay is installed in the communication controller, oscillators are connected to the two sides of the communication controller, a rotating connector is connected to the top of the communication controller and connected with a high-frequency cable, the high-frequency cable is connected with a frequency converter, and a low pass filter is connected to the top of the frequency converter; a seal device is connected to the top of the low pass filter and comprises a check ring and a seal ring, the check ring and the seal ring are directly connected into an integrated structure, and a flange plate is connected to the top of the seal ring. As the rotating connector is adopted, impact on a precise assembly by external disturbance is reduced, overall stability is improved, and the device has the advantages of being small in size, light in weight, long in service life, compact in structure, simple in design, low in cost and capable of being widely used and popularized and saving space.

Description

technical field [0001] The invention relates to the electric field, in particular to a device for transmitting alarm low-frequency signals through commercial power lines. Background technique [0002] In recent years, with the rapid development of communication technology, how to ensure the smoothness and speed of alarm low-frequency signal transmission has become a key research topic for people today. The initial form of the signal transmission rotary connector is an electric slip ring, which relies on brushes and ring walls. The contact transmits data signals and power current energy from the rotating metal ring to the stationary ring. However, as people's requirements for multimedia signals such as video are getting higher and higher, the electric slip ring shows the limitations of high energy consumption and poor anti-interference performance. , In addition, the electric slip ring relies on brushes to transmit signals, and the quality of the brushes also restricts the qu...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the rapid development of communication technology, how to ensure the smoothness and speed of alarm low-frequency signal transmission has become a key research topic for people today. The initial form of the signal transmission rotary connector is an electric slip ring, which relies on brushes and ring walls. The contact transmits data signals and power current energy from the rotating metal ring to the stationary ring. However, as people's requirements for multimedia signals such as video are getting higher and higher, the electric slip ring shows the limitations of high energy consumption and poor anti-interference performance. , in addition, electric slip rings rely on brushes to transmit signals, and the quality of brushes also restricts the quality of signal transmission

[0003] However, the traditional devices that transmit low-frequency alarm signals through mains lines in the domestic market have weak anti-interference ability to the external environment, poor stability, and poor signal transmission quality.

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