A finite cascade automatic reconfiguration network routing device and its network in star structure

Abstract

The invention discloses a limited cascading automatic reconfiguration network routing device of star structure and its network. Table and E 2 PROM, the routing device adopts the star networking protocol to realize the interconnection and communication between the single devices at the same level, and one of the standard ports is a dedicated port for the cascading connection between the routing device at the current level and the routing device at the upper level. The upper-level routing device communicates with the upper-level routing device through this dedicated port, and the other at least 7 standard ports are used to connect at least 7 stand-alone devices, or at least 6 stand-alone devices and a lower-level routing device for lower-level expansion. The routing device is used to realize the automatic cascading networking between different levels of single-machine measuring equipment, which is convenient for network expansion and eliminates the threshold of networking.

Description

technical field [0001] The invention relates to the field of measurement and control applied in the aerospace industry, in particular to a limited cascading automatic reconfiguration network routing device of a star structure and a network thereof. Background technique [0002] With the development of space exploration technology such as aerospace, the measurement system for obtaining equipment working status data has become more and more important. The data logger of the measurement system is an effective means of obtaining measurement data. At present, domestic data loggers exist in a stand-alone mode in the measurement system. Regardless of whether the measurement system contains one or more measurement devices, the measurement system operates each measurement device separately. This operation method has the following problems: [0003] 1) Although various industrial field buses currently available for measurement can achieve high transmission rates, they have poor netwo...

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Problems solved by technology

[0003] 1) Although various industrial field buses currently available for measurement can achieve high transmission rates, they have poor networking capabilities, require complex configurations, complex protocols, and poor real-time performance; and buses with strong real-time The age is relatively early, and there are common problems of low speed and complex configuration, which are far from meeting the real-time measurement and transmission requirements of large amounts of information in the industry.

[0004] 2) Due to the different requirements of the measurement system, the communication interface between the measurement system and the measurement equipment is constantly changed according to the task requirements, resulting in inconsistent and uncertain communication interfaces between the two test equipment, that is, each equipment must be Independent interface design and development lead to low reusability of software and hardware, new equipment needs to be retested, and reliability cannot be guaranteed;

[0005] 3) The inconsistency of the interface causes the self-test of the measuring equipment or the acquisition of the test data of the measuring equipment to be carried out one-to-one, and the test lines cannot be reused, resulting in the need for each equipment to be connected to a dedicated ground measurement equipment for testing. This increases the input and output interfaces of the measurement system, making the measurement system more complex, which is not conducive to the stable realization of the overall function of the measurement system;

[0007] 5) In non-standardized design, the different functional requirements and uneven design levels of test equipment are not conducive to the popularization of advanced technology, and at the same time, inconsistent design circuits and unbalanced design capabilities also directly determine the performance of test equipment. It is not conducive to the mass production and popularization of test equipment

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