Operation state monitoring and emergency stop method for distributed supersonic air flow generation device

Abstract

The invention provides an operation state monitoring and emergency stop method for a distributed supersonic air flow generation device. The method is implemented based on a distributed measurement lower computer cluster and a measurement upper computer, and comprises the following steps that: 1) state characterization parameters are sampled; 2) the parameters are screened; 3) each measurement lower computer unit discriminates corresponding characterization parameter data after parameter screening according to an obtained criterion table; 4) when a certain condition is satisfied, the measurement lower computer unit sends early warning signals of the characterization parameters to the measurement upper computer; and 5) the measurement upper computer conducts early warning summarizing, and sends an emergency stop instruction to a control host when a certain condition is satisfied, so that the supersonic air flow generation device executes an emergency stop program. According to the method, only the criterion table needs to be set and issued on the measurement upper computer, so that the workload is small; and excessive network resources are not occupied, data congestion is avoided, and the risk that equipment is damaged due to the fact that early warning is not conducted in time is reduced.

Description

technical field

[0001] The invention belongs to the technical field of ramjet tests, and in particular relates to a method for monitoring the running state of a distributed supersonic air flow generating device and an emergency stop method. Background technique

[0002] The supersonic air flow generation device continuously heats the continuous supersonic air flow through liquid oxygen and alcohol combustion to generate a continuous supersonic high-temperature air flow, providing a supersonic high-temperature air flow simulation environment for the ramjet test. The supersonic air flow generating device has risks such as leakage of three high-pressure component pipeline media (liquid oxygen, alcohol, air) and device damage during operation, and it cannot be found in the supersonic air flow generating device through human visual observation. In the early stage of the risk, timely response confirmation and emergency shutdown of the device.

[0003] At present, the fault diagno...

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