High-speed space-borne vibration signal measuring system based on ARM

Abstract

The invention discloses a high-speed space-borne vibration signal measuring system based on ARM, which can carry out high-speed acquisition and real-time storage on vibration response data distributed on a satellite. The high-speed space-borne vibration signal measuring system specifically comprises a high-speed data acquisition cache module, a Flash storage module, a data processing module, a CAN (Controller Area Network) bus communication circuit, a power module and multiple vibration sensors, wherein the vibration sensors are distributed on the satellite and used for measuring the mechanical environment of the satellite; the power module is used for converting primary power supply provided by a satellite platform into secondary power supply for the system; the high-speed data acquisition cache module carries out high-speed acquisition and caching on the vibration response data of the sensor; the data processing module interprets and packages the acquired vibration response data, carries out task scheduling on the system and controls the normal operation of the whole system; the Flash storage module is used for storing the vibration response data packaged by the data processing module in real time; and the CAN bus communication circuit carries out bus communication on the satellite platform, receives instructions from the satellite platform and transmits data required by the satellite platform.

Description

technical field [0001] The invention relates to an ARM-based spaceborne vibration signal high-speed measurement system, which belongs to the technical field of aviation testing. Background technique [0002] With the development of my country's aerospace industry, the number of satellites launched every year is increasing day by day, and the reliability design of satellites is becoming more and more important. The anti-mechanical design and mechanical test for satellites play an important role in the reliability design of satellites. The satellite-borne vibration signal acquisition equipment is the equipment that acquires the vibration response data of the satellite in the rocket dynamic environment during the active phase of satellite launch. However, the current traditional spaceborne vibration signal acquisition equipment has various disadvantages: [0003] (1) Low performance and single function. Space-borne vibration signal acquisition equipment needs to collect high...

AI Technical Summary

Problems solved by technology

[0003] (1) Low performance and single function

Space-borne vibration signal acquisition equipment needs to collect high-frequency vibration signals on the satellite system, so it needs a high measurement rate, but due to the limitation of the types and costs of aerospace components, the performance level such as measurement rate is low, and the function is relatively single , making the validity of the measurement data low

[0004] (2) The equipment is complicated and the cost is high

In order to achieve the purpose of high-speed acquisition, the traditional spaceborne vibration signal acquisition equipment usually designs multiple processors or multiple FPGAs; at the same time, in order to realize the communication with the external star service platform, the SJA1000 chip is mostly used as the CAN bus controller, which is large in size. , high power consumption, which is not conducive to the miniaturization design of the equipment; the above designs will increase the complexity of the equipment, making the equipment large in size, heavy in weight, high in power consumption, and the cost of the equipment will also increase significantly

[0005] (3) Low reliability

Due to the complexity of equipment and many electronic components, the traditional spaceborne vibration signal acquisition equipment is prone to single event problems in the complex environment of space, which reduces the reliability of the equipment

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