CHANNEL OF RADIO COMMUNICATION WITH DISCRETE INFORMATION FOR MEANS OF TRANSPORT Russian patent published in 2010 - IPC G08B25/10 B60R25/10 H04B1/68 H04B7/12 

FIELD: information technologies.

SUBSTANCE: invention is intended for transfer of discrete information messages, in particular alarm messages, along radio communication channel from security objects, in particular from means of transport, to station of centralised surveillance. Receiving part of radio communication channel is located in station of centralised surveillance and includes receiving antenna, unit of receivers, unit of information processing, antenna coupler and information receiver. At the same time input of antenna coupler is connected to receiving antenna, and outputs via unit of receivers are connected to unit of information processing, output of which is connected to input of information receiver. Transmitting part installed on each security object comprises a source of information, modulator of bearing frequency, generator of bearing frequency, balance modulator, power amplifier, summator, generator of subcarrier frequency, generator of unbalance voltage and transmitting antenna arranged with the possibility to send messages on air to receiving antenna in station of centralised surveillance. At the same time output of information source via modulator of bearing frequency is connected to additional control input of bearing frequency generator. Output of bearing frequency generator is connected to information input of high frequency of balance modulator, output of which via power amplifier is connected to transmitting antenna. Control input of low frequency of balance modulator is connected to output of summator, to inputs of which there are subcarrier frequency generator and unbalance voltage generator outputs connected.

EFFECT: simplified design of transmitting part and improved noise immunity of information sent by security object.

2 cl, 2 dwg