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Multifunctional HART (Highway Addressable Remote Transducer) communication interface

A communication interface, multi-functional technology, applied in electrical components, transmission systems, etc., to achieve the effect of large selection flexibility

Inactive Publication Date: 2012-06-27
SHANGHAI INST OF PROCESS AUTOMATION & INSTR
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The present invention aims at the problem that the current HART communication interface can only adapt to a specific HART master station, and proposes a multifunctional HART communication interface, which can connect HART field devices to a variety of specific communication master stations, increasing the application of HART field devices range, increased flexibility

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  • Multifunctional HART (Highway Addressable Remote Transducer) communication interface

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Embodiment Construction

[0013] Such as figure 1 The shown schematic diagram shows the position of the multifunctional HART communication interface in the system. The multifunctional HART communication interface 103 can establish the communication between the HART field device 105 and the master station 101 . The standard HART communication protocol 104 is between the HART field devices and the multi-function HART communication interface. The multifunctional HART communication interface 103 has a built-in standard HART master station data link layer and other standard master station protocol stacks, which can convert the HART protocol into a standard communication protocol 102 that can be recognized by various types of master stations, such as MODBUS , HART, TCP / IP, etc., and the physical interface can also choose different types such as RS232, RS485, USB, Bluetooth, etc.

[0014] Such as figure 2 In the structural block diagram of the multifunctional HART communication interface system shown, the ...

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Abstract

The invention relates to a multifunctional HART (Highway Addressable Remote Transducer) communication interface, comprising a communication interface bottom board and a digital board card, wherein the communication interface bottom board comprises a communication interface module, a power module and an HART communication channel; the digital board card is a logical chip circuit board card or a digital board card with a MCU (micro control unit); HART site equipment sends data into the digital board card for data processing and protocol conversion by the HART communication channel and is connected with a main station by the communication interface module; and the power module supplies power to the modules on the communication interface bottom board. The multifunctional HART communication interface has the advantages that different main-station communication physical interfaces are provided and can be conveniently replaced with any of RS232, RS485, USB (Universal Serial Bus) and Bluetooth, and the selection flexibility for the physical interfaces is large; seamless connection between multiple main-station protocols and HART field buses is realized, so that the HART equipment can be more conveniently accessed into the existing main-station system; and a complete HART main-station data link layer is established inside and can be compatible with all HART site equipment.

Description

technical field [0001] The invention relates to the field of industrial automation process control, in particular to a multifunctional HART communication interface. Background technique [0002] As an open protocol, the HART protocol has now become the "de facto" standard for smart meters. Judging from the authoritative automation market analysis report in the United States, the demand for global intelligent instruments, especially those conforming to the HART protocol, is still increasing year by year. Although HART instruments have been widely used, their digital communication capabilities have not been fully utilized, mainly due to the lack of relevant digital signal transmission channels and application solutions. As HART continues to evolve, the HART communication interface is an easy solution. However, the existing HART communication interfaces on the market can only cooperate with a specific HART master station, and it is difficult to adapt to the coexistence of mul...

Claims

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Application Information

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IPC IPC(8): H04L29/10H04L29/08
Inventor 陈俊杰
Owner SHANGHAI INST OF PROCESS AUTOMATION & INSTR
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