DEVICE FOR TRANSMISSION AND PROCESSING OF DATA ABOUT STATE OF OBJECTS Russian patent published in 1997 - IPC

FIELD: security and fire alarm systems, other monitoring equipment. SUBSTANCE: device has detectors which are connected to monitored objects, and station which has detectors hub which output is connected to input of data processing unit. In addition station has at least one operator board which is connected through receiver and transmitter of joint signal to station data processing unit. In addition device has N-1 stations at least N-2 of which are connected to two other stations and each remaining station is connected to one another station with two-wire lines, N is greater than 1. In addition each station has receiver and transmitter of main signal and receiver and transmitter of additional signal, first, second, third and fourth commutators, first and second differential systems. Stations are connected to provide transmission of signal in direction which is opposite to main one. This results in possibility to decrease information losses after failure of several transmission lines. EFFECT: increased number of detectors to be connected, increased validity of information transmission, increased reliability. 2 cl, 15 dwg