A remote measurement and control insulation monitoring device
An insulation monitoring device and technology of measurement and control, applied in the field of aerospace measurement and control, can solve the problems of long-distance data transmission and short transmission distance of the measurement and control system, and achieve flexible monitoring switching, improved safety, and improved automation degree of effect
Active Publication Date: 2018-01-05
BEIJING AEROSPACE AUTOMATIC CONTROL RES INST +1
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Problems solved by technology
In the above literature, the technical means to obtain the insulation condition are similar, but they can only monitor the insulation condition between a DC bus and the casing, and the RS485 bus or CAN bus is used to communicate with the host computer, and the transmission distance is too short to be able to Meet the needs of long-distance data transmission of the measurement, launch and control system
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Embodiment
[0043] In this embodiment, the insulation state monitoring of the M1 busbar and the M2 busbar is realized by means of a remote measurement, transmission, control and insulation monitoring device.
[0044] Among them, the front-end power supply module and the back-end power supply module use CS1D-PD024, which uses 24V power supply as input to provide DC 5V and 12V power supply for other modules. Both the front-end switch input module and the back-end switch input module use CS1W-ID211, which are used to receive the channel selection signal sent by the channel selection circuit. CS1W-0C211 is selected as the switching value output module, which is used to control the switching of the M1 bus and M2 bus monitoring channels. The analog acquisition module selects CS1W-AD081, and collects the voltage on the positive and negative current-limiting resistors of the two DC buses M1 and M2 under the control of the front-end central processing module. The front-end and back-end communicat...
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The invention provides a long-distance measurement and control insulation monitoring device, which includes a front-end monitoring subsystem, a front-end channel selection circuit, a front-end power supply module, a back-end monitoring subsystem, a back-end channel selection circuit, a back-end power supply module and an Ethernet network communication module. Among them, the optical fiber communication module is used for communication between the front-end and the rear-end monitoring subsystem, which can realize long-distance measurement and control; and in the present invention, the voltage of the current-limiting resistor between the busbar and the casing is selected to be collected, and the voltage The monitoring realizes insulation monitoring, which is convenient for sampling and long-distance transmission; in the monitoring channel switching, the front and rear end switching instructions are mutually exclusive through the front-end central processing module. When the front and rear end switching channel numbers are different, the status of the monitoring channel remains unchanged. Thus avoiding the occurrence of "series electricity" caused by overlapping busbars of different channels.
Description
technical field [0001] The invention relates to the technical field of aerospace measurement, launch and control, in particular to an insulation monitoring device for remote measurement, launch and control. Background technique [0002] In the field of aerospace test, launch and control technology, various DC power supply buses are often designed inside the test, launch and control system equipment to meet the power consumption needs of various loads in the test, launch and control system. If the positive and negative terminals of a certain DC bus are connected to the case at the same time, it will cause the positive and negative bus to be connected through the case, and a short circuit accident will occur. Therefore, in the working process of the measurement, emission and control system, it is very important for the safety of the emission to maintain insulation between each DC positive and negative busbar and the casing. [0003] The measurement, launch and control system ...
Claims
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IPC IPC(8): G01R31/12
Inventor 梁海波刘志华司文杰李浩梁婕吕章刚许昊
Owner BEIJING AEROSPACE AUTOMATIC CONTROL RES INST