Serial bus equipment extension method of diagnostic system

Abstract

The invention discloses a serial bus equipment extension method of a diagnostic system. The serial bus equipment extension method is implemented by an equipment address word register, an equipment tagged word register, an equipment parameter word register, a parallel data bit extension register, a shifting register, a shifting counter, a system clock and a switch. The serial bus equipment extension method is applied to equipment extension on a serial bus of the diagnostic system, and has the characteristics of being simple, convenient and reliable.

Description

technical field [0001] The invention belongs to the field of mechanical diagnosis, in particular to a serial bus device expansion method of a diagnosis system. Background technique [0002] There are more and more modern mechanical diagnosis system equipment, and the data bus is getting longer and longer, which puts forward high requirements on the reliability and stability of the system data bus. Although the parallel bus expansion equipment is simple, there are many data lines. The reliability of the system decreases geometrically, and the expansion of the equipment needs to be considered from the serial bus, but at the same time, a lot of hardware cannot be added. Contents of the invention [0003] The object of the present invention is to provide a serial bus device expansion method of the diagnosis system, which is used for the expansion of the serial bus device of the diagnosis system. [0004] The technical solution for realizing the above-mentioned purpose is: a s...

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Problems solved by technology

[0002] There are more and more modern mechanical diagnosis system equipment, and the data bus is getting longer and longer, which puts forward high requirements on the reliability and stability of the system data bus. Although the parallel bus expansion equipment is simple, there are many data lines. The reliability of the system decreases geometrically, and it is necessary to consider the expansion of the device from the serial bus, but at the same time, it cannot increase a lot of hardware

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