A high-reliability and high-frequency satellite wireless data acquisition system and method

A wireless data and acquisition system technology, applied in the space field, can solve problems such as retakes and data loss, achieve high-reliability and high-frequency acquisition, reduce system weight, and solve the effects of data loss

Active Publication Date: 2022-04-08
BEIJING INST OF CONTROL ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is to overcome the deficiencies of the prior art and provide a highly reliable and high-frequency satellite wireless data acquisition system and method. The two-stage frequency solves the contradiction between high-speed acquisition and large wireless time delay. The area cache solves the problem of data loss and retake caused by the wireless delay fluctuation conference. This method can be applied to the vibration measurement system and meets the needs of the flexible identification algorithm.

Method used

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  • A high-reliability and high-frequency satellite wireless data acquisition system and method
  • A high-reliability and high-frequency satellite wireless data acquisition system and method
  • A high-reliability and high-frequency satellite wireless data acquisition system and method

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Experimental program
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Effect test

Embodiment 1

[0078] ■Embodiment 1: The delay is relatively increased.

[0079] The delay sequence is [0.0,0.0,0.9,0.0,0.0,0.0,0.0,0.0]. Simulation results such as Figure 8 and 9 Shown:

Embodiment 2

[0080] ■Embodiment 2: The time delay is relatively reduced.

[0081] The delay sequence is [0.9,0.9,0.9,0.0,0.9,0.9,0.9,0.9,0.9]. Simulation results such as Figure 10 and 11 Shown:

[0082] The waveforms of the above simulation results clearly show the relationship between command acquisition timing, data update timing, WriteBuff and ReadBuff when the wireless delay is relatively increased and relatively decreased. The simulation results are consistent with the timing analysis results in Section 2. The above simulation results show that: in the case of large wireless communication delays and large delay fluctuations, the two-level frequency and four-area buffering acquisition method can ensure that the data collected at high frequencies is continuous and complete in real time, without packet loss or repacket .

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Abstract

A highly reliable and high-frequency satellite wireless data acquisition system and method belong to the field of space technology. The invention includes a collection unit and several sensitive units, the collection unit communicates with the sensitive units through a wireless network; each sensitive unit includes sensitive components and at least four storage buffers. The frequency of the acquisition unit and the sensitive unit are different. The two-level frequency solves the contradiction between high-speed acquisition and large wireless delay. The four-area cache solves the problem of data loss and retake caused by wireless delay fluctuations. This method can be applied In the vibration measurement system of the large flexible body satellite and its components, the requirements of the flexibility identification algorithm are met, and the data is collected with high reliability and high frequency.

Description

technical field [0001] The invention relates to a highly reliable and high-frequency satellite wireless data acquisition system and method, belonging to the field of space technology. Background technique [0002] The traditional communication interfaces on satellites are wired communication interfaces such as RS422, 1553 bus, and CAN bus. Although the transmission timing is stable and reliable, cable networks need to be laid, which increases the weight of the system and cannot meet the needs of specific application scenarios where cables cannot be laid. Most of the traditional wireless data acquisition technologies are used in the industrial field, and the requirements for the reliability, equal periodicity, real-time performance and acquisition frequency of the collected data are not high. In military fields such as aerospace, there are generally high requirements for data reliability, equal periodicity, real-time performance, and update frequency, such as vibration measur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185G08C17/02
CPCH04B7/1851G08C17/02
Inventor 郭朝礼郎燕梁鹤张锦江张迎发王妍宋晓光蔡彪蒋金哲高莉
Owner BEIJING INST OF CONTROL ENG
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