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Bus system and data transmission method based on combination of polling and uniform time slots

A bus system and combined technology, applied in transmission systems, bus networks, digital transmission systems, etc., can solve the problems of inconsistent data traffic, poor maintenance, and complicated cable network layout among multiple electronic devices, and improve real-time response characteristics. , Low power consumption, the effect of reducing the average waiting time

Active Publication Date: 2018-09-04
中国航天电子技术研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention is applied to the data exchange and system control of the airborne and ground electronic system wired communication networks of medium and large UAV systems, and solves the problems of inconsistent data exchange of multiple electronic equipment data traffic and complicated cable network layout and poor maintainability

Method used

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  • Bus system and data transmission method based on combination of polling and uniform time slots
  • Bus system and data transmission method based on combination of polling and uniform time slots
  • Bus system and data transmission method based on combination of polling and uniform time slots

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Embodiment 1

[0036] The present embodiment provides a kind of LHDBUS bus technology, comprises following three parts:

[0037] (1) LHDBUS bus architecture, (2) time slot allocation management, (3) network control optimization.

[0038] The LHDBUS bus architecture is the bus hardware composition and access mode, the time slot allocation management is the bus protocol design, and the network control optimization is the bus control method design.

[0039] The following describes the implementation process of LHDBUS bus technology in detail from three parts: LHDBUS bus structure, time slot allocation management, and network control optimization:

[0040] LHDBUS bus structure

[0041] The LHDBUS bus is composed of a differential bus, a bus adapter and electronic equipment, and its structural diagram is as follows figure 1 shown. The LHDBUS bus is based on differential transmission, and the bus circuit presents an open-circuit mode. The bus adapter is used to connect various electronic device...

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Abstract

The invention relates to the technical field of data bus communication, and particularly relates to a bus system and a data transmission method based on a combination of polling and uniform time slots. The bus system includes a bus, bus adapters and electronic equipment, wherein the bus performs two-way communication with multiple bus adapters, and each of the bus adapters performs two-way or one-way communication with multiple sets of electronic equipment; and the communication between the bus and the bus adapters adopts the combination of polling and uniform time slots. According to the scheme of the invention, a combination of polling and competitive time slots is adopted, burst services can be processed in time through the uniform distribution of the competitive time slots, the mean waiting time can be reduced, the real-time response characteristics of the system can be improved, and meanwhile, by setting the polling time slots, congestion data caused by competitive collisions canbe effectively eliminated, the network congestion rate can be reduced, the system throughput can be guaranteed, and the polling and competitive time slots can be customized.

Description

technical field [0001] The invention relates to the technical field of data bus communication, in particular to a bus system and a data transmission method based on the combination of polling and uniform time slots. Background technique [0002] At present, the data bus standard widely used in aviation and aerospace systems is MIL-STD-1553B bus, which is a centralized time-division serial bus whose main features are distributed processing, centralized control and real-time response. The MIL-STD-1553B bus is a digital command / response time-division multiplexed data bus with a transmission rate of 1Mbit / s. The communication rate of the bus is increased from 1Mbps to 5Mbps. The 1553B bus message is composed of three words, the word length is 20 bits, and the effective data length is 16 bits; half-duplex transmission mode is adopted, and the transmission medium is shielded twisted pair. Its reliability mechanism includes error prevention, fault tolerance, error detection and l...

Claims

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Application Information

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IPC IPC(8): H04L12/40H04L12/403
CPCH04L12/40006H04L12/403H04L12/4035H04L2012/4028
Inventor 刘套张心玥王小刚胡延奇赵甲
Owner 中国航天电子技术研究院
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