Universal HART gateway data communication method based on industrial wireless network
An industrial wireless network and data communication technology, applied in the field of wireless communication, can solve the problems of increased installation, use and maintenance costs, inconvenient access to wired connections, complex and changeable instrument installation locations, etc., to achieve flexible layout and management, convenient query, The effect of removing space constraints
Inactive Publication Date: 2014-06-25
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
View PDF5 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In the prior art, most of the widely used hart systems are wired connections, and the upper computer communicates with the instrument through a wired connection; since the application environment of the hart instrument is mostly a factory environment, the installation location of the instrument is complex and changeable, and wired Connection access has many inconveniences
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] The present invention will be further described in detail below with reference to the drawings and embodiments.
[0028] Such as figure 1 As shown, the concepts involved in the present invention are as follows:
[0029] 1) WIA: As the WIA industrial wireless network uses a time-division multiplex communication mode, all devices in the entire network must operate in time slots according to the same network time. The time of the entire network is the absolute time carried in the broadcast message of the gateway. The node parses out the absolute network time of several broadcast messages continuously received from the synchronization time source, and uses the FTSP synchronization algorithm to complete time synchronization.
[0030] 2) HART: When the radio frequency module sends a wireless message, it first detects whether other nodes are sending messages. If there are already nodes in the process of sending messages, the CCA detection will feedback conflicts. According to the c...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to an universal HART gateway based on an industrial wireless network. For a hart response message uploaded by a terminal adapter connected onto a hart instrument, analysis is performed by the gateway to extract the address of the hart instrument, establish a data structure corresponding to the hart instrument information by taking the address as the index, and store the related hart instrument information into the data structure. For a hart command configured and issued by an upper computer, at first, the hart instrument address is analyzed, the corresponding information data structure is retrieved through the hart instrument address, and a response hart message is constructed and sent to the upper computer through a serial port. The universal HART gateway data communication method of the invention is compatible with various hart upper computer software and hart instruments, and at the same time, the wireless network is adopted, so the wired connection in the industrial field can be omitted, the hart instrument information can be acquired in a remote manner, and the upper computer software response speed is closed to a wired hart adapter.
Description
Technical field [0001] The present invention relates to wireless communication technology, and specifically describes a data communication method of a universal hart gateway based on a WIA industrial wireless network. Background technique [0002] Industrial wireless network WIA (Wireless Networks for Industrial Automation) technology is a highly reliable, ultra-low power intelligent multi-hop wireless sensor network technology with independent intellectual property rights launched by the Shenyang Institute of Automation, Chinese Academy of Sciences. This technology provides a self-organizing , The self-healing intelligent Mesh network routing mechanism can maintain high reliability and strong stability of network performance in response to dynamic changes in application conditions and environments. [0003] HART (Highway Addressable Remote Transducer), an open communication protocol for addressable remote sensor high-speed channels, is a communication protocol for on-site intellig...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40
Inventor 郑军曾鹏赵雪峰牛泽田徐洪垚
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI