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Multi-channel data collection control circuit and method for satellite

A data acquisition and control circuit technology, applied in the program control and electrical program control of the sequence/logic controller, etc., can solve the problems of increasing CPU load, increasing CPU participation time, increasing AD acquisition time, etc., to improve the utilization rate , Reduce acquisition delay and save acquisition time

Inactive Publication Date: 2014-11-26
NO 771 INST OF NO 9 RES INST CHINA AEROSPACE SCI & TECH
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AI Technical Summary

Problems solved by technology

The main control CPU responds to the whole process, which increases the load on the CPU; in addition, the stabilization time of switching between channels, the interval time between multiple acquisitions of a single channel and the readback of AD acquisition are also completed by the main control unit, considering the instability of the software delay In software design, the waiting delay time will be appropriately increased to ensure the stability of the channel and data, which increases the participation time of the CPU and also increases the AD acquisition time

Method used

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  • Multi-channel data collection control circuit and method for satellite
  • Multi-channel data collection control circuit and method for satellite

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Embodiment Construction

[0017] see figure 1 , the present invention includes a multi-channel electronic switch, a voltage quantity acquisition chip, and an FPGA control module for realizing multi-channel electronic switch channel switching, voltage quantity acquisition timing work control, data smoothing operation, and data storage and reading functions; the multi-channel electronic switch Several input terminals of the multi-channel electronic switch are respectively connected with corresponding signal sources, the analog signal output terminals of the multi-channel electronic switch are connected with the analog signal input terminals of the voltage quantity acquisition chip, and the control signal input terminals of the multi-channel electronic switch and the voltage quantity acquisition chip The terminals are respectively connected with the FPGA control module; the data output terminal of the voltage quantity acquisition chip is connected with the data input terminal of the FPGA control module. T...

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Abstract

The invention discloses a multi-channel data collection control circuit and method for a satellite. The multi-channel data collection control circuit comprises multi-channel electronic switches, a voltage collection chip and an FPGA control module, and the FPGA control module is used for achieving switching of channels of the multi-channel electronic switches, control over the voltage collection time sequence work, data smoothing operation and the data storage and reading function. The hardware circuit formed by the FPGA control module, the multi-channel electronic switches and the voltage collection chip is used for replacing the complex software function, the collection function and the data processing and storage function can get rid of control of a processor, the resources of a CPU are effectively released, collection time is saved, and process control is more stable. An independent system for achieving collection modularization and control process intellectualization is achieved, and the far-reaching significance in satellite-borne integration of a satellite system is achieved.

Description

technical field [0001] The invention relates to a satellite multi-channel data acquisition control circuit and control method. Background technique [0002] In the satellite system, there are a large number of acquisition tasks such as voltage and temperature. In the existing design, the traditional RTU lower computer is used to control the acquisition by the main control unit CPU of the star computer. [0003] In the original design, channel switching, multi-acquisition smoothing, AD conversion control, data smoothing processing, and acquisition data reading are all completed by the application software of the main control unit. The main control CPU responds to the whole process, which increases the load on the CPU; in addition, the stabilization time of switching between channels, the interval time between multiple acquisitions of a single channel and the readback of AD acquisition are also completed by the main control unit, considering the instability of the software del...

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Application Information

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IPC IPC(8): G05B19/04
Inventor 孟猛肖国尧吕仲基何小青白荣侠李彦妮
Owner NO 771 INST OF NO 9 RES INST CHINA AEROSPACE SCI & TECH
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