Vehicle mounted communication device

Abstract

A vehicle-mounted communication device, which is used for early warning and forecasting of train approaching, is installed on a locomotive, and includes: a driving data acquisition box, connected to several sensors installed on the train, and used to receive driving data; a data conversion platform, connected to the driving data acquisition box , including a microprocessor for controlling the work of the vehicle-mounted communication device and a storage unit for storing the driving data sent by the driving data acquisition box; an encoding unit, the encoding unit includes a main encoding unit for digitally encoding the received driving data; sending and receiving The transceiver unit includes at least the main transceiver unit, which is used to modulate the coded data, amplify the power, send the driving data and receive the alarm data sent from the crossing machine, construction machine or portable machine; the high-frequency power synthesizer is used for the main The conversion control of the radio frequency signal between the transceiver unit and the antenna; the antenna is used for transmitting and receiving the radio frequency signal, and the alarm device is used for decoding the alarm data received by the main transceiver unit and giving an alarm.

Description

technical field [0001] The invention relates to a vehicle-mounted communication device, in particular to a vehicle-mounted communication device used for early warning and forecasting of train approaching. Background technique [0002] In the railway system, trains must run normally, and railway facilities need to be repaired and maintained by staff. This creates contradictions and conflicts between railway facility maintenance and train operation, and even vicious safety accidents such as vehicle crashes and casualties occur. In the past, the timing of on-site operations was mainly based on the train diagram. When an emergency occurs, the diagram must be changed temporarily. If there are people working on the railway ahead, their lives will be threatened. On the other hand, during the operation of the train, when the staff finds a major safety hazard on the road but fails to inform the train driver who is exercising, the consequences will be disastrous. [0003] In order to...

AI Technical Summary

Problems solved by technology

[0004] (1) Using medium and short wave frequency bands for transmission and reception, the signal is easily interfered and the signal is easy to interfere with the transmission and reception of other equipment, and the full time domain transmission is performed, the frequency occupation time is long, and the frequency utilization rate is low

Besides, using analog signals for transmission, the device has poor anti-interference and poor error correction ability

[0005] (2) The train approaching alarm device usually uses the sound source as the signal source or the light sensor or the track sensor to collect the signal at a fixed point, and then emit an alarm. The scope of use and the environment are greatly limited, which is not conducive to widespread use

Moreover, the alarms all use audible and visual alarms, without vehicle driving data, it is difficult for receiving terminals such as crossings and railway construction sites to learn the train driving information as soon as possible, so safety precautions should be taken in advance

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