Satellite instruction driving capacity expanding circuit
An instruction and circuit technology, applied in the field of on-board instruction drive expansion circuits, can solve the problem of low instruction drive power, and achieve the effects of enhancing reliability, improving drive capability, and avoiding early failure.
Active Publication Date: 2016-09-21
BEIJING SATELLITE MFG FACTORY
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Problems solved by technology
The low command drive power is caused by the fact that the drive current provided by the whole satellite remote control unit is generally not greater than 200mA, and the number of relays that the aerospace power supply needs to drive is large.
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Embodiment Construction
[0021] In order to improve the command driving ability of the aerospace power supply and realize the reliable power on and off of multiple outputs, the present invention proposes an on-board command drive expansion circuit, which indirectly drives multiple magnetic latching relays by driving two series-connected electromagnetic relays. Among them, In order to ensure the reliability requirements of the aerospace power supply, the relay contacts in the drive expansion circuit of the present invention generally adopt a series-parallel connection. The drive expansion circuit of the present invention adopts two electromagnetic relays to be connected in series, and the two sets of contacts of each electromagnetic relay are respectively connected in parallel. In addition, in the process of realizing the circuit, the purpose of redundant design is achieved through the serial and parallel connection of the relays.
[0022] The command-driven expansion circuit of the present invention in...
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Provided is a satellite instruction driving capacity expanding circuit, comprising an electromagnetic relay solenoid current limiting circuit, an electromagnetic relay solenoid bleeder circuit, and a starting or shutdown instruction capacity expanding circuit. The electromagnetic relay solenoid current limiting circuit is used for performing current-limiting on a power up instruction pulse or power off instruction pulse; the starting or shutdown instruction capacity expanding circuit is used for connecting the relay power up solenoids or the power off solenoids in the instruction switching circuit of a primary bus loop and a secondary power supply; the electromagnetic relay solenoid bleeder circuit is used for discharging charges on the starting or shutdown instruction capacity expanding circuit. The satellite instruction driving capacity expanding circuit employs the electromagnetic relay in the starting or shutdown instruction capacity expanding circuit to drive the magnetic latching relay in an instruction switching circuit, avoids the space radiation influences (such as instability and initial failure) of a traditional digital logic circuit to a space-borne satellite load power supply, and has better applicability.
Description
technical field [0001] The invention relates to a control circuit, in particular to an on-board command drive expansion circuit. Background technique [0002] With the development of aerospace power supply in the direction of multi-output and multi-step sequence control, the limited output capability of the satellite remote control unit will hinder this development. Therefore, improving the command drive capability has become a method to solve this problem. The relay is one of the main electronic components in the aerospace power supply, and its reliable opening and closing will directly affect the reliability of the power system. The low command driving power is caused by the fact that the driving current provided by the whole satellite remote control unit is generally not more than 200mA, and the number of relays that the aerospace power supply needs to drive is large. With the development of multi-output aerospace power supplies and the increase in timing requirements, t...
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Patent Timeline
Login to View More IPC IPC(8): G05B19/042
CPCG05B19/042G05B2219/25341
Inventor 张倩倩陈永刚王儒雷卫军
Owner BEIJING SATELLITE MFG FACTORY