Satellite power supply lower computer system with 1553B interface chip to replace data memory

Abstract

A satellite power supply lower computer system with a 1553B interface chip to replace a data memory comprises a CPU minimum system module, a communication module, a telemetering acquisition module and an instruction execution module. The CPU minimum system module comprises a CPU and a peripheral circuit, and the CPU is used for executing stored programs, sending generated data to the communication module and reading needed data from the communication module; the communication module comprises a 1553B interface chip and a peripheral circuit, and the 1553B interface chip completes 1553B communication with an integrated electronic subsystem and stores data sent by the CPU minimum system module at the same time; the telemetering acquisition module acquires various telemetering quantities and converts the telemetering quantities into digital quantities; the instruction execution module performs level instruction control on the power supply controller control mechanism through the latch, and performs OC instruction control on the power supply controller control mechanism through the decoder and the OC instruction chip. According to the invention, a data memory is removed, and the memory space of the 1553B interface chip is used for accessing the data cache; resource waste is avoided, cost is saved, and reliability is improved.

Description

technical field [0001] The invention belongs to the field of satellite lower computers, and relates to a satellite power lower computer system in which a 1553B interface chip replaces a data memory. Background technique [0002] In the application process of the lower computer of the satellite power controller, when using the 1553B interface chip, the communication protocol often does not use all the 1553B memory space for data transmission. At the same time, the space utilization rate of the CPU for the data memory is often low. [0003] Due to the limitation of the amount of information transmitted by the on-board measurement and control system, the telemetry data transmitted by the power controller to the integrated electronics through 1553B communication is generally on the order of tens to hundreds of bytes, while the commonly used 1553B interface chip has a memory capacity of 8192 bytes , most of the memory space is redundant, and this part of memory will not be used ...

AI Technical Summary

Problems solved by technology

[0005] The 1553B interface chips and data memory listed above are aerospace-grade chips with the smallest memory space available in the same type, and cannot be replaced with small-capacity memory chips. Under the premise of derating, a certain degree of waste of storage space is caused

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