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Converter of 1553B bus remote terminal (RT) node and controller area network (CAN) bus

A CAN bus and converter technology, applied in the field of converters, can solve problems such as reducing the probability of metastable states

Inactive Publication Date: 2014-08-27
SOUTH WEST INST OF TECHN PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, how to design an asynchronous FIFO with high reliability in FPGA to realize the interconnection conversion between high-speed 4Mb / s 1553B bus and 1Mb / s CAN bus and reduce the probability of metastable state has not been completely solved yet.

Method used

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  • Converter of 1553B bus remote terminal (RT) node and controller area network (CAN) bus
  • Converter of 1553B bus remote terminal (RT) node and controller area network (CAN) bus
  • Converter of 1553B bus remote terminal (RT) node and controller area network (CAN) bus

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Embodiment Construction

[0012] refer to figure 1 . 1553B bus remote terminal RT node and CAN bus converter, including DSP chip, Flash data storage chip, FPGA chip and CAN protocol chip. DSP, as the operating platform of bus data conversion and scheduling control software, completes the conversion of 1553B bus RT nodes and CAN bus on the data application layer. The DSP chip is externally connected with multiple indicator lights and RS422 interface, which can [a1] directly access the Flash data storage chip, and access the IP core and CAN protocol chip of the FPGA's 1553B remote terminal RT through the internal address, data and control signal lines, and at the same time receive The interrupt signal generated by the IP core of the FPGA's 1553B remote terminal RT and the CAN protocol chip. The 1553B remote terminal RT module IP core will generate an interrupt to the DSP chip after receiving the 1553B bus data, complete the 1553B protocol layer packaging such as the 1553B start bit, check bit generatio...

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Abstract

The invention provides a converter of a 1553B bus remote terminal (RT) node and a controller area network (CAN) bus and aims to provide a flexible and reliable converter capable of rapidly connecting a 1553bus and the CAN bus. According to the technical scheme of the converter, a digital signal processor (DSP) chip accesses an intellectual property (IP) core of a 1553B RT of a field programmable gate array (FPGA) and a CAN protocol chip through addresses, data and control signal lines, receives an interrupt signal produced by the IP core of the 1553B RT of the FPGA and the CAN protocol chip, dispatches a control software operation platform to read and configure 1553B bus RT node parameters and CAN bus node parameters, and achieves conversion of the 1553B bus RT node and the CAN node on a data application layer. According to an FPGA chip, a mode of the IP core of the 1553B RT is used as a 1553B bus protocol controller, and a 1553B interface drives a transformer circuit to access a 1553B bus network to link a physical layer of a 1553B bus; the CAN protocol chip is combined with a CAN isolation drive circuit to access a CAN bus network.

Description

technical field [0001] The invention relates to a converter related to a 1553B bus RT node and a CAN bus in the technical field of information processing. Background technique [0002] In the control system, the 1553B bus and the CAN bus, which have high reliability, are often used at the same time for device interconnection. More expensive than CAN bus. CAN bus is an industrial bus with higher cost performance. Many industrial equipments are equipped with CAN bus interface. Due to the need of conversion of control mode and information transmission mode, in some measurement and control systems, there is often bus conversion between 1553B bus and CAN bus. Due to the excellent performance of CAN bus in its automotive electronic system, it has received more and more attention and recognition from users. [0003] These two buses are buses with high transmission rate, high reliability and good real-time performance, but they all have certain shortcomings. Any data transmissio...

Claims

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Application Information

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IPC IPC(8): G06F13/40H04L12/40
Inventor 梅员邓洪峰卫攸宁郝红宇赵海波毛微杨鹏李琴琴吴学文
Owner SOUTH WEST INST OF TECHN PHYSICS