Oxygen automatic control system and method for rescue capsule

Abstract

The invention discloses an oxygen automatic control system and method for a rescue capsule, and belongs to a gas automatic control system and method. Oxygen automatic control in the rescue capsule comprises the system and the method. The gas source apparatus of the system is sequentially connected with a gas pressure reduction apparatus and a gas flow velocity measuring feedback apparatus through a gas busbar, the gas outlet of the gas flow velocity measuring feedback apparatus is connected with an oxygen output solenoid valve; the signal output end of the gas flow velocity measuring feedback apparatus, together with the output end of an oxygen sensor, is connected with the input end of a master controller, the master controller is connected with a host computer, and the control output end of the master controller is connected with the oxygen output solenoid valve for randomly controlling the oxygen output solenoid valve; and the selection of the gas flow velocity measuring feedback apparatus enables a feedback loop to be formed during oxygen control. A fuzzy PID algorithm embedded in a system controller can realize adaptability to the time-varying characteristic of a system model so as to realize accurate oxygen supply. The selection of the gas flow velocity measuring feedback apparatus can realize a system oxygen dynamic time limit pre-estimation function.

Description

technical field [0001] The invention relates to an automatic gas control system and method, in particular to an automatic control system and method for oxygen in a rescue cabin. Background technique [0002] The existing gas regulation technology occasions such as granaries, vegetable and fruit greenhouses and other gas regulation basically belong to switch regulation, that is, the output control only has two modes of on and off or chemical oxygen supply, which requires manual control and cannot be accurately controlled. The human body is a complex tissue, and simple switch adjustment and primitive chemical oxygen supply cannot meet the harsh requirements of the human body for the living environment. [0003] Invention patent application No. 201110339596.4 provides an intelligent air conditioning device. The working principle is that when the oxygen concentration in the confined space is low, when the carbon dioxide concentration is greater than 1.0%, or when each gas parame...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide an automatic control system and method for oxygen in the rescue cabin, to solve the problem that the existing oxygen control method has a certain delay, and cannot adjust oxygen on-line in real time, accurately Oxygen supply and oxygen dynamic time limit estimation function, not suitable for rescue cabin oxygen control scheme

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