Indoor and outdoor microwave transmitting and receiving communication monitoring method and communication monitoring system thereof

Abstract

The invention discloses an indoor and outdoor microwave transmitting and receiving communication monitoring system which comprises an indoor subsystem and an outdoor subsystem and is characterized in that the indoor subsystem comprises an indoor broadcast television signal processing module, a first filter, a second filter, an indoor FSK modulation module and an indoor host computer; an asynchronous transmitting / receiving module communication interface of the indoor host computer is connected with the indoor FSK modulation module, the indoor FSK modulation module is connected with the second filter, the indoor broadcast television signal processing module is connected with the first filter, the first filter is connected with a capacitor, and the other end of the capacitor and a signal terminal of the second filter are connected with an indoor terminal of a communication power supply cable. The invention adopts a wireless communication module with the model of SM-36C, modulates a TTL level signal into an FSK modulation signal and transfers the FSK modulation signal through the prior communication power supply cable assisted by a specially arranged communication protocol, thereby well communicating with an outdoor unit, a repeater station, and the like and having strong capacity of resisting disturbance, low error rate and cost and favorable application value.

Description

technical field [0001] The invention relates to the field of microwave communication, in particular to an indoor and outdoor microwave transceiver communication monitoring method and a communication monitoring system suitable for radio frequency and intermediate frequency parts of a radio and television transceiver system. Background technique [0002] The transmitter and receiver of the radio and television transceiver system are generally installed on the outdoor transmission tower. In order to facilitate the monitoring of its working status, the data collected by the A / D conversion module needs to be sent to the indoor single-chip computer in the monitoring room through the outdoor single-chip microcomputer and displayed. [0003] In order to ensure the transmission of important signals such as radio and television, and to monitor the operation of the equipment at any time, the communication equipment installed on the outdoor radio and television transmission tower usually...

AI Technical Summary

Problems solved by technology

This method does not need to add too much additional hardware, and the cost and implementation difficulty are low. However, due to the complex electromagnetic environment in the space near the transmitting tower, the bit error rate is high, and because there are many communication devices on the actual transmitting tower, different equipment Monitoring signals are easy to interact with each other, channel allocation is difficult, and even wrong communication signals may be obtained, resulting in false alarms and misoperations

[0005] 2. Wired communication Since there is a certain distance between the monitoring room and the top of the transmission tower, it uses differential transmission such as RS485, which can well overcome problems such as voltage drop interference, but requires additional communication lines, which increases the cost and increases the difficulty of the project.

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