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CAN network using method

A CAN bus and network technology, applied in the field of computer network transmission, can solve problems such as low anti-electromagnetic interference performance, and achieve the effects of strong anti-electromagnetic interference performance, thick diameter and small loss

Inactive Publication Date: 2017-06-09
重庆健旺科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a CAN network usage method to solve the problems of the traditional twisted pair CAN's low anti-electromagnetic interference performance, etc., and achieve the purpose of real-time data transmission

Method used

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  • CAN network using method

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Embodiment 1

[0019] Such as figure 1 As shown, the first multiple communication nodes of the CAN network of the present invention transmit data to the hub through the optical fiber, and transmit the data to the CAN bus through the electromagnetic compatibility circuit under the processing of the hub; the data on the CAN bus can also pass through the electromagnetic compatibility circuit, The hub transmits back to each communication node, and the setting of the electromagnetic compatibility circuit can make the hub communicate with other nodes in the dielectric network, and realize the hybrid network communication where optical and dielectric coexist;

[0020] The CAN network includes multiple communication nodes, optical fiber, hub and CAN bus, the communication nodes are connected to the hub through the optical fiber, the hub is connected to the CAN bus, and the hub is connected to the CAN bus through an electromagnetic compatibility circuit. Multiple communication nodes transmit data to ...

Embodiment 2

[0024] Such as figure 1 As shown, this embodiment is based on Embodiment 1, preferably, the optical fiber is a polymer optical fiber. Polymer optical fiber is composed of a transparent polymer core layer with a high refractive index and a transparent polymer cladding layer with a low refractive index. It has a thick diameter, good flexibility, low density, and low loss in the visible light region. The loss is small, and the anti-electromagnetic interference is strong, so that it is widely used in sensors and local area networks.

[0025] Preferably, the transmitter A and transmitter B are HFBR-1414TZ (Beijing Jiemei Chuangxin Electronic Technology Co., Ltd.). HFBR-1414TZ can use low-cost 1mm diameter POF fiber or 200μm HCS fiber; it can be installed horizontally or vertically on the PCB circuit board; the transmitter is LED light source , wavelength 650nm or 660nm.

[0026] Preferably, the integrated receiver A and the integrated receiver B are HFBR-2412T (Beijing Huike Zh...

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Abstract

The invention discloses a method for using a CAN network. Firstly, a plurality of communication nodes of the CAN network transmit data to a hub through an optical fiber, and then transmit data to the CAN bus through an electromagnetic compatibility circuit under the processing of the hub; the data on the CAN bus can also be reversed. It is transmitted back to each communication node through the electromagnetic compatibility circuit and the hub in turn. The setting of the electromagnetic compatibility circuit can make the hub communicate with other nodes in the dielectric network, and realize the hybrid network communication where optical and dielectric coexist.

Description

technical field [0001] The invention relates to computer network transmission technology, in particular to a method for using a CAN network. Background technique [0002] CAN, or Controller Area Network, is one of the most widely used field buses in the world. Initially, CAN was designed as a microcontroller communication in the automotive environment, exchanging information between the electronic control devices ECU in the vehicle to form an automotive electronic control network. For example: CAN control devices are embedded in engine management systems, gearbox controllers, instrumentation equipment, and electronic backbone systems. In a single network composed of CAN bus, in theory, countless nodes can be connected. In practical applications, the number of nodes is limited by the electrical characteristics of the network hardware. For example, when using Philips P82C250 as a CAN transceiver, 110 nodes are allowed to be connected in the same network. CAN can provide da...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40H04B10/25H04B10/278
CPCH04L12/40H04B10/25H04B10/278H04L2012/40215
Inventor 聂建仙
Owner 重庆健旺科技有限公司
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