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Double on-site bus interface converter

A fieldbus interface and converter technology, applied in network connection, data exchange details, comprehensive factory control, etc., can solve the problems of unable to meet the needs of multiple fieldbuses in industrial systems, single interface function, high hardware complexity, etc. Low power consumption, low hardware complexity, and strong flexibility

Inactive Publication Date: 2009-01-14
WUHAN UNIV OF SCI & TECH
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Problems solved by technology

[0003] Although some progress has been made in these technical researches and product applications, they are either aimed at the conversion from a serial port to a single fieldbus or between two types of fieldbuses. Bus conversion, the interface function is single, the flexibility is poor, it cannot meet the needs of the actual industrial system for multiple field buses, and the hardware complexity is high and the volume is large

Method used

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Embodiment Construction

[0055] specific implementation plan

[0056] The present invention will be further described below in conjunction with the accompanying drawings, which is not intended to limit the scope of protection.

[0057] A dual-field bus interface converter is shown in Figure 1: the converter includes a SoC microcontroller 9, a CAN bus communication interface module 12, a Profibus-DP bus communication interface module 7, a serial communication interface module 11, and a power conversion module 3 And bus selection switch module 8.

[0058] Wherein: the CAN bus communication interface module 12 is made up of the CAN controller 10 embedded in the SoC microcontroller 9, the first optocoupler isolation circuit 2 and the CAN bus transceiver 1; the Profibus-DP bus communication interface module 7 is composed of the SPC3 protocol controller 4. The second optocoupler isolation circuit 5 and the RS485 driver 6 are composed.

[0059] Present embodiment is shown in Fig. 1 for example, and one end...

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Abstract

The invention relates to a multi-field bus interface converter, with the technical scheme that: one end of a CAN bus transceiver (1) is connected with the can bus network, and other end is connected with a CAN controller (10) through a first optical coupling isolation circuit (2); one end of a SPC3 protocol controller (4) is connected with a SoC microcontroller (9), and the other end is connected with an RS deliver (6) through a second optical coupling isolation circuit (5); an RS 485 driver (6) is connected with the Profibus-DP bus network; a serial field device or an instrument (13) is connected with the SoC microcontroller (9) through a serial communucation interface module (11); a bus selecting switch module (8) is connected with a Soc microcontroller (1). The protocol converting program between the serial port and the CAN and Profibus-DP bus interface is stored in the SoC microcontroller (9). The invention is characterized by strong flexibility and low hardware complexity and the like, thereby realizing the monitoring management and resource sharing on the same serial device by the two field bus networks, reach interconnection of heterogeneous network.

Description

technical field [0001] The invention belongs to the technical field of field bus. In particular, it relates to a double field bus interface converter. Background technique [0002] The huge demand of actual production has promoted the rapid development of field bus technology and products, and the application of various field communication networks is becoming more and more popular, especially CAN, Profibus-DP and other networks are developing the fastest in our country. However, the equipment and instruments with these fieldbus communication capabilities provided on the market are mainly imported equipment, and the price is high. Therefore, the development of fieldbus interface technology and products is a problem that technicians are more concerned about at present. For example, Beijing Dingshi Innovation Technology Co., Ltd. has developed RS-232 / 485-to-Profibus-DP and RS-232 / 485-to-CAN bus bridges; Sweden's HMS company has developed AnyBus-X series serial port gateways ...

Claims

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Application Information

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IPC IPC(8): H04L12/02H04L12/66G05B19/418
CPCY02P90/02
Inventor 方康玲叶杨婷
Owner WUHAN UNIV OF SCI & TECH
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