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Single event risk group detection method based on LET accompanying monitoring

A detection method and single-particle technology, which can be applied to spaceflight equipment, spaceflight vehicles, spaceflight equipment, etc., can solve the problems of difficult use of information and high false alarm rate of single particle risk, and achieve low cost and easy realization Effect

Pending Publication Date: 2021-04-16
NO 63921 UNIT OF PLA
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Problems solved by technology

The conventional single event risk has a high false alarm rate and the information is difficult to use

Method used

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  • Single event risk group detection method based on LET accompanying monitoring
  • Single event risk group detection method based on LET accompanying monitoring

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Embodiment Construction

[0020] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0021] The invention provides a single event risk group detection method based on LET accompanying monitoring. Based on the abundance of sensitive devices such as FPGA and SRAM on the satellite body, firstly, the satellite sensitive devices are classified according to the single event protection level of the device, and then the satellites are in orbit The type and probability of single event occurrence, and the relationship between the single event event of different protection level devices corresponding to the LET spectrum data carried by the satellite and the telemetry data of the particle radiation detector, and finally based on the found relationship and the real-time data of the particle radiation detector. Self-monitoring of stellar single-event risk, and early warning when particle radiation energy or cumulative dose is found to be close to or exce...

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Abstract

The invention discloses a single event risk group detection method based on LET accompanying monitoring. According to the invention, the type and probability of the single event effect of the carried sensitive devices when the spacecraft fails are combined with LET monitoring space particle environment data, and a single event information group coupling detection mode is formed by using the single event protection level of each sensitive device of the spacecraft; a risk identification mode combining point detection and satellite body monitoring is realized, a particle radiation environment causing a single event effect of a device in a satellite cabin can be accurately acquired in real time, and an effective monitoring method is provided for satellite in-orbit risk early warning. According to the method, spacecraft sensitive device information multiplexing is utilized, extra devices are not added, the cost is low, and implementation is easy.

Description

technical field [0001] The invention relates to the technical field of on-orbit satellite single-event risk detection, in particular to a single-event risk group detection method based on LET accompanying monitoring, which is a risk self-monitoring method integrated with single-point LET detection and star single-event failure. Background technique [0002] The single event effect is one of the most harmful radiation effects to the spacecraft electronic system. Single event effects can change the logic state of electronic devices used in satellites, circuit logic function disorder, errors in data processed by computers, errors in instructions, program "running away", computer paralysis, bulk silicon CMOS devices and power devices are induced by it The large current burns out, causing abnormalities and failures of the satellite, and even putting the satellite in a catastrophic situation. [0003] The probability of a single event failure in a device is closely related to the...

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Application Information

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IPC IPC(8): B64G1/66
Inventor 全林李泠沈国红王东亚荆涛冷佳醒王鲲鹏吴文堂段美亚赵蓓蕾
Owner NO 63921 UNIT OF PLA
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