Anti-intrusion device for cable television network and manufacturing method thereof

Abstract

The invention discloses an anti-intrusion device for a cable television network and a manufacturing method thereof, which are applied to a circuit amplifier of a network. The anti-intrusion device comprises a single chip computer, an FSK demodulator, a signal sensor, an open shell sensor, an electronic switch, a driving circuit, a memory, an automatic reset circuit and a buzzer warning circuit, which are connected according to the design requirements; the signal sensor sends radio-frequency signals to the FSK demodulator to be demodulated; the demodulated data enters the single chip computer, and is compared, identified and judged with the data of the internal memory to generate a control signal; the control signal is sent to the driving circuit; the driving circuit controls the electronic switch to turn off the power supply of the circuit amplifier so that the intrusion signals cannot be continuously transmitted downwards. When a shell of the circuit amplifier is opened, the signal of the open shell sensor is transmitted to the single chip computer, and the single chip computer turns off the power supply of the circuit amplifier and meanwhile drives a warning buzzer to sound.

Description

technical field [0001] The invention relates to an anti-intrusion device in a cable television network and a manufacturing method thereof, in particular to an anti-intrusion device installed in a line amplifier to increase the signal for identifying broken lines and overlapping intrusions of broken lines, cut off the power supply of the line amplifier, and prevent intrusion. An anti-intrusion device for a cable TV network with functions such as signal continuation and a manufacturing method thereof. Background technique [0002] The cable radio and television network is an important part of the country's informatization construction and the infrastructure of the radio and television industry. In the cable broadcasting TV network, there are a large number of line amplifiers installed in the main line, branch line, branch line and other lines to compensate the loss caused by the cable during the signal transmission process, so that the signal can be transmitted by the The fro...

AI Technical Summary

Problems solved by technology

[0004] Due to the intrusion of illegal signals, the line is destroyed, resulting in the degradation of the transmission signal quality, infringing on the legitimate rights and interests of cable TV users, and causing great economic losses to the operators and managers of cable TV networks.

Images