Analog quantity telemetering acquisition method and system based on sampling address

Abstract

The invention provides an analog quantity telemetering acquisition method based on sampling addresses. The method comprises the steps that S1, a processor writes a group of analog quantity telemetering sampling addresses into an FPGA; S2, the processor writes a telemetry acquisition starting signal into the FPGA; S3, after the FPGA receives the signal, a first sampling address is read; S4, the FPGA performs parallel-serial conversion on the read sampling address, and inputs the sampling address into an AD conversion circuit; S5, the FPGA reads analog quantity telemetering parameters from the AD conversion circuit and stores the analog quantity telemetering parameters in a telemetering data cache register; S6, the next sampling address is read from the FPGA, and the steps S4-S5 are repeatedly executed until the N analog quantity remote measurement sampling addresses finish acquisition; S7, the FPGA outputs an acquisition interrupt signal to the processor; S8, after the processor receives the signal, an analog quantity telemetering parameter corresponding to the analog quantity telemetering sampling address is read from a telemetering data cache register; S9, the next group of analogquantity remote measurement sampling addresses is written into the FPGA, and the steps S2-S8 are repeatedly executed. The method flexibly adapts to telemetering acquisition requirements of differentmodels, and realizes an analog telemetering system of centralized control and distributed acquisition.

Description

technical field [0001] The present invention relates to the technical field of satellite-borne electronic equipment, in particular to an analog remote measurement acquisition method and acquisition system based on a sampling address. Background technique [0002] The star computer completes the functions of telemetry acquisition, package, frame, and downloading of many analog quantities in the entire satellite. With the increase in the complexity of satellite functions, the demand for analog telemetry acquisition changes frequently, and the implementation methods are diverse. It is the design of the telemetry implementation plan and implementation difficulties. [0003] The Space Data System Advisory Committee recommends various protocols and requirements from PCM fixed-format telemetry, conventional packetized telemetry to advanced on-orbit data systems, increasing the flexibility of telemetry design to meet escalating requirements and reduce external product changes Press...

AI Technical Summary

Problems solved by technology

This method cannot adapt to the sampling requirements of different spacecraft, nor can the sampling address be changed on-orbit by note numbers

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