DEVICE FOR CONTROLLED OBJECTS PROTECTION AGAINST FALSIFIED DATA ENTRY WITH RESPONSE TIME DELAY Russian patent published in 2016 - IPC G08B25/10 G08B29/04 H04L9/22 

FIELD: fire safety.

SUBSTANCE: invention relates to security and fire alarm systems, in particular to devices for controlled objects protection against falsified data entry, and can be used for protection of objects. Device comprises a control unit, including a control device, a unit of sensor preparation for operation, sensors table PROM unit, a unique identifier generator, an adder, pseudorandom sequence generators, buffers of incoming and outgoing codegrams, a codegram buffering unit, a unit of the receiving-transmitting device, a sensor initialization line, pseudorandom sequence RAM units, an "excluding OR" unit, a FIFO buffer, communication line, fault monitoring unit, a serial number comparing unit, and a sensor unit comprising a serial number ROM unit, a sensor initialization unit, a unique identifier PROM unit, a timer, an adder, a pseudorandom sequence generator, buffers outgoing and incoming codegrams, a buffer, a unit for generating the outgoing codegram, a key, a unit of the receiving-transmitting device.

EFFECT: technical result is dynamic change of the list of controlled objects due to adding and removing sensors, difficulty of detection of a tested at the moment controlled object by an external observer due to simultaneous individual authentication of the required sensor and check of availability of all the other sensors per one polling slot.

1 cl, 2 dwg