DOMESTIC GAS FLOW AND LEAKAGE CONTROL SYSTEM IN APARTMENT BUILDINGS Russian patent published in 2011 - IPC G08B17/10 G08B25/00 

FIELD: instrument making.

SUBSTANCE: domestic gas flow and leakage control system in apartment buildings includes apartment vapour detectors 1.i, apartment gas flow metres 2.i with pulsed output, apartment gas flow isolation valve 3.i, OR logic element 4.i, apartment comparing unit 5.i of vapour level with allowable value, apartment source 6.i of reference voltage of level of allowable gas content, apartment pulse counter 7.i, apartment converter 8.i of pulse frequency to analogue signal, hall gas content sensor 9.j, hall gas flow metre 10.j with pulsed output, hall gas supply isolation valve 11.j, OR logic element 12.j, hall comparing unit 13.j of gas content level with allowable value, hall sensor 14.J of reference voltage of level of allowable gas content, hall pulse counter 15.j, hall converter 16.j of pulse frequency to analogue signal, adder 17.j of total gas content of the hall, comparing unit 18.j of level of total gas content with allowable value, source 19.j of reference voltage of level of total gas content, adder 20.j of imbalance, selection unit 21.j of imbalance module, evaluation unit 22.j of current gas flow imbalance in the hall, source 23.j of reference voltage of level of allowable imbalance, cellular modem 24, apartment alarm module 25.i, apartment warning lamp 26.i, apartment audio warning device 27.i, generator 28.i of "ПСП", key 29.i, delay line 30.i, OR logic element 31.i, hall alarm module 32.i, hall warning lamp 33.j, hall audio warning device 34.j, generator 35j of "ПСП", key 36.j, delay line 37.j, hall warning lamp 38.j, hall audio warning device 39.j, generator 40.j of "ПСП", key 41.j, delay line 42.j, OR logic element 43.j, building generator 44 of "ПСП", adder 45, master generator 46, phase manipulator 47, power amplifier 48 and transmitting antenna 49 (i=1, 2,…, n, j=1, 2,…, m, where n - number of apartments in the hall, m - number of halls in apartment building). Panoramic receiver includes receiving antenna 50, high frequency amplifier 51, searching unit 52, heterodyne oscillator 53, mixer 54, intermediate frequency amplifier 55, detector 56 of phase-shift keyed signals, spectrum analysers 57 and 59, phase doubler 58, comparing unit 60, threshold unit 61, delay line 62, key 63, narrow-band filters 64 and 66, scale-of-two phase-splitting circuit 65, phase detector 67, and recording and analysing unit 68.

EFFECT: enlarging functional capabilities of the device owing to using warning lamps and audio warning devices both in individual apartments, and in halls in general, and improving reliability and accuracy of transmitted warning information to operative dispatching department by using radio channel and complex signals with phase manipulation.

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