Gas concentration detecting and supplementing system for premixing gas cylinder of deep diving respirator

The invention discloses a gas concentration detection and supplement system for a premixing gas cylinder of a deep diving respirator. The gas concentration detection and supplement system comprises the premixing gas cylinder, a weighing device, an oxygen concentration analyzer, an oxygen source cylinder, a helium source cylinder and a computer, the oxygen concentration analyzer is used for detecting the oxygen concentration # imgabs0 # of the mixed gas in the premixing gas bottle; the weighing device is used for weighing the total mass # imgabs 1 # of the premixing gas cylinder; when the oxygen concentration # imgabs2 # is not within the allowable error range of the required oxygen concentration # imgabs3 #, if the measured oxygen concentration # imgabs4 # is smaller than the required oxygen concentration # imgabs5 #, the computer calculates the mass # imgabs6 # of oxygen needing to be supplemented to the premixing gas bottle, the oxygen source bottle supplements oxygen with the mass # imgabs7 #, and if the m