Measurement and control device of nitrogen system

Abstract

The invention discloses a measurement and control device of a nitrogen system. The measurement and control device comprises a PLC (Programmable Logic Controller), a field control module, a remote-control module, a first power supply module and a second power supply module, wherein the PLC is controlled through the field control module to measure and control each measurement and control instrument in the nitrogen system, and the remote-control module can also carry out measurement and control; and the first power supply module and the second power supply module are respectively used for supplying power for the PLC and the remote-control module, wherein, the remote-control module is provided with upper computers being standby for each other and Ethernets being standby for each other; the PLC is provided with CPUs (Central Processing Unit) being standby for each other; and both the first power supply module and the second power supply module are provided with a standby power supply for supplying power for the device. The measurement and control device has the advantages that the measurement and the control to various signals in the nitrogen system can be realized, and the measurement and the control to the complex nitrogen system of engine plume and satellite thermal-vacuum tests are met. Through the CPUs, the Ethernets and the upper computers which are standby for each other, faults of the CPUs, the Ethernets or the upper computers are avoided to cause the measurement and the control to fail.

Description

technical field [0001] The invention belongs to the field of vacuum science and technology. The invention relates to a nitrogen system measurement and control device, in particular to a liquid nitrogen gas nitrogen external flow system measurement and control device. Background technique [0002] Under normal circumstances, the engineering applications of engines and satellites are inseparable from rigorous ground tests, and ground tests cannot be performed without measurement and control devices. To evaluate the actual performance of an engine and satellite requires a large amount of test data, which requires the measurement and control device to provide credible data. [0003] The vacuum plume effect test system (multifunctional plume test platform) is a multi-purpose test device, which is mainly used for aerospace attitude and orbit control engine plume test research, and also takes into account thermal vacuum tests such as satellites. There are many nitrogen system equi...

AI Technical Summary

Problems solved by technology

At present, there is no dual-purpose ground test platform measurement and control device in China that can be used for both satellite thermal vacuum tests and engine plume tests

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