CN205596147U - WirelessHART adapter, network node and network - Google Patents
WirelessHART adapter, network node and network Download PDFInfo
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- CN205596147U CN205596147U CN201620370073.4U CN201620370073U CN205596147U CN 205596147 U CN205596147 U CN 205596147U CN 201620370073 U CN201620370073 U CN 201620370073U CN 205596147 U CN205596147 U CN 205596147U
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Abstract
The utility model discloses a wirelessHART adapter for insert the wirelessHART network with HART equipment. The wirelessHART adapter includes: power module for power consumption part for in the wirelessHART adapter provides the electric energy, the HART module for accord with the data communication that HART agreed with HART equipment, wirelessHART wireless module for and the wireless data communication who accords with the wirelessHART agreement between other nodes in the wirelessHART network and the gateway, control module is connected with HART module, wirelessHART wireless module respectively for realize the data conversion between wirelessHART agreement and the HART agreement. The utility model also discloses a wirelessHART network node and wirelessHART network. The utility model discloses can make things convenient for and realize low -costly the wireless network deployment of present HART equipment.
Description
Technical field
The utility model discloses a kind of WirelessHART adapter, belong to wireless sensor network technology field.
Background technology
HART(Highway
Addressable Remote Transducer), the open communication agreement of highway addressable remote transducer is ROSEMOUNT company of the U.S. released in 1985 a kind of for the communication protocol between field intelligent instrument and control room equipment.HART device provides has relatively low bandwidth, the communication of appropriateness response time, and through the development of more than 20 years, HART technology was the most ripe, and had become the industrial standard of whole world intelligence instrument.Along with the development of wireless technology, a large amount of for scene HART device composition wireless sensor network is also become inevitable to realize data radio communication.
WirelessHART is first open interoperable wireless communication standard, for meeting the crucial requirement of radio communication reliable, stable and safe during process industry is applied for real time plant.Voting through 29 countries, WirelessHART communication criterion (HART7.1) formally obtains the accreditation of international electrical engineering standard committee (IEC) on the 19th in JIUYUE in 2008, becomes a kind of publicly available specification.This standard can be from being formally published to obtain the accreditation of IEC, and reason is: first, and availability and inheritance are fine.Its two, support WirelessHART wireless standard supplier products process never rest.Its three, technology, opening up is relatively good.
WirelessHART is the wireless mesh network communication protocol for crossing process automation.Except keeping existing HART device, order and the ability of instrument, which increase the wireless capability of HART protocol.Each WirelessHART network includes three key components: 1) be connected to the wireless field device of process or shop equipment.2) gateway that the host application program making these equipment and be connected to High speed rear panel or other existing level of factory communication networks can communicate.3) it is responsible for configuration to communicate between network, controlling equipment, manage message routing and monitor the webmastering software of network health.Webmastering software can be integrated together with gateway, host application program or process automation controller.
Developing rapidly with increasingly mature along with wireless communication technology, embedded system and sensor technology, WirelessHART will inevitably replace wired HART.The using and debug very convenient of WirelessHART communication, it can be completely compatible with original instrument and control system, as long as equipment based on HART, application software and workflow etc. all can continue to retain to use.WirelessHART Web vector graphic compatibility operation radio IEEE802.15.4 standard in the frequency ranges such as 2.4GHz industry, science and medicine.
In view of the recoverable amount that industry spot HART device is huge, it is necessary to a kind of WirelessHART adapter of design, at low cost HART device can be accessed WirelessHART network.
Utility model content
Technical problem to be solved in the utility model is to overcome prior art not enough, it is provided that a kind of WirelessHART adapter, can facilitate and be achieved at low cost the wireless networking of existing HART device.
This utility model solves above-mentioned technical problem the most by the following technical solutions:
A kind of WirelessHART adapter, for HART device is accessed WirelessHART network, described WirelessHART adapter includes: power module, for providing electric energy for the consuming parts in WirelessHART adapter；HART module, for carrying out meeting the data communication of HART protocol with HART device；WirelessHART wireless module, is used for carrying out meeting the RFDC of WirelessHART agreement between other node and gateway in WirelessHART network；Control module, is connected with HART module, WirelessHART wireless module respectively, for realizing the data conversion between WirelessHART agreement and HART protocol.
Preferably, the message format meeting HART protocol is utilized to carry out serial communication between control module and WirelessHART wireless module.
Preferably, described WirelessHART adapter has normal mode of operation and two kinds of mode of operations of park mode.
Techniques below scheme can also be obtained according to identical utility model thinking:
A kind of WirelessHART network node, including WirelessHART adapter described in HART device and arbitrary technical scheme of being connected with described HART device.
A kind of WirelessHART network, including gateway and the group node that WirelessHART radio communication is connected can be carried out with gateway, described node is above-mentioned WirelessHART network node.
Compared to existing technology, this utility model has the advantages that
This utility model WirelessHART adapter can make existing a large amount of HART device realize WirelessHART networking efficiently and easily, the information that the premium properties utilizing WirelessHART network realizes industry spot is mutual, and this utility model simple in construction, the matured product on market can be utilized to build, it is achieved with low cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model one specific embodiment of WirelessHART adapter；
Fig. 2 is the software architecture of this utility model WirelessHART adapter；
Fig. 3 is the structural representation of this utility model WirelessHART network.
Detailed description of the invention
Below in conjunction with the accompanying drawings the technical solution of the utility model is described in detail:
This utility model WirelessHART adapter includes: power module, for providing electric energy for the consuming parts in WirelessHART adapter；HART module, for carrying out meeting the data communication of HART protocol with HART device；
WirelessHART wireless module, is used for carrying out meeting the RFDC of WirelessHART agreement between other node and gateway in WirelessHART network；Control module, is connected with HART module, WirelessHART wireless module respectively, for realizing the data conversion between WirelessHART agreement and HART protocol.
Fig. 1 shows a specific embodiment of this utility model WirelessHART adapter.As it is shown in figure 1, this WirelessHART adapter includes: these four critical pieces of power module, HART module, WirelessHART wireless module, control module.
Wherein, power module is to provide stable power supply for system, and the electric energy that battery or external power source are provided is converted to the voltage (such as+3V) suitable with consuming parts in system after power module processes；Using battery to power in the present embodiment, power module uses TPS61020 boost chip.
HART module is connected with on-the-spot HART device by wired mode, and bipartite data communication meets HART protocol；HART module in the present embodiment uses model to be the modem chip of A5191HRT.
WirelessHART wireless module carries out meeting the RFDC of WirelessHART agreement between other node and the gateway wirelessly and in WirelessHART network, in the present embodiment, WirelessHART wireless module model is Awia_220, serial communication is used between itself and control module, this serial ports be AwiaTech company be to enable this module to provide the user with the interface that secondary is developed, and define the form at serial ports transmitting data.This form is a specification communicated with WirelessHART wireless module, and only meeting this form could be with WirelessHART wireless module proper communication.
Control module is the heart of this utility model WirelessHART adapter, for realizing the data conversion between WirelessHART agreement and HART protocol, its main task to be performed includes: measures the current value of 4～20mA analog loopbacks, performs the data that obtain from HART device and control to forward, be responsible for sending order to field instrument and controlling forwarding, receive and send the wireless data etc. from WirelessHART module.In the present embodiment, control module uses model to be the microcontroller of EFM32G230F128, and it is 32 bit processors of whole world lowest power consumption, has energy consumption management system and abundant peripheral interface flexibly.
The main task that this utility model WirelessHART adapter software provides includes: 1) WirelessHART data-transformation facility, to set up the communication with WirelessHART network.2) HART data-transformation facility, this function sets up the HART meter communication of on-the-spot side, to carry out data exchange.3) the process function ordered, to process the order from WirelessHART end or from the reception of HART end.
Fig. 2 shows the software architecture of this utility model WirelessHART adapter.As in figure 2 it is shown, this WirelessHART adapter uses μ C/OS-II as its operating system.μ C/OS-II be obtain American aviation authorities's certification a transplantation, curable, can the multitask preemptive type real time operating system of cutting, its code is increased income, compared to the embedded OS of other main flows, the process that it is transplanted to CPU is relatively simple, more reliable and more stable.WirelessHART adapter software part mainly includes 4 tasks: have line end transformation task, wireless side transformation task, command process task and arbitration machine task.4 tasks work alone, and realize tasks synchronization and data exchange by built-in variable.
Wherein, there is the communication that line end transformation task is mainly responsible between microcontroller EFM32G230F128 and lower floor's HART instrument, the connection of WirelessHART adapter and on-the-spot side HART instrument can be set up by this task.
Wireless side transformation task is mainly responsible for the communication between microcontroller EFM32G230F128 and WirelessHART wireless module, by this task, WirelessHART adapter can be connected to WirelessHART network.
Command process task is mainly responsible for processing the order received from WirelessHART end or HART end, and it is divided into multiple different command process subprogram, to process different orders.
Arbitration machine task is mainly responsible for solving multiple processors and is accessed conflict and the competition that shared resource causes simultaneously, and it had both considered requirement of real time, was automatically adjusted again the bus bandwidth that each processor occupies, and prevented systematic function from declining.
The research of low-power consumption is one of WirelessHART research hot topic, is also the common issue of industry wireless network research.In this detailed description of the invention, WirelessHART adapter also uses the scheme reducing power consumption, particularly as follows: this WirelessHART adapter has normal mode of operation and two kinds of mode of operations of park mode, normal mode of operation is entered when needs carry out data transmission, when no data needs transmission, after waiting Preset Time, system enters the park mode of low-power consumption.
The HART module of this utility model WirelessHART adapter is connected with on-the-spot HART device, i.e. may make up a node of WirelessHART network, thus WirelessHART networking can be carried out.Fig. 3 shows the basic structure of this utility model WirelessHART network, as it is shown on figure 3, this WirelessHART network mainly includes HART field apparatus, WirelessHART adapter, WirelessHART field apparatus, WirelessHART gateway, network manager, security manager, WirelessHART access point, routing device, WirelessHART handheld device and host computer.
Wherein, the HART field apparatus being furnished with WirelessHART adapter is referred to as wireless field device with WirelessHART field apparatus, is to realize on-the-spot perception or perform the basic equipment of function.Field apparatus is connected on industrial process for industrial process is monitored and controlled, and they can produce, collect and route WirelessHART datagram, and supports all HART generic commands, and its power supply mode can be battery, cable power or ring current etc..
HART field apparatus can be connected into WirelessHART network by this utility model WirelessHART adapter, and what it met that HART communication communicates with WirelessHART is required.
WirelessHART gateway is responsible for being connected WirelessHART network with factory automation network, and allows mutual HART command, tunnel information and data diagnostic message between both networks.WirelessHART gateway usually plays the role of server, and its function mainly includes collecting, safeguarding and cache data and the command response coming from the WirelessHART network equipment, then these data and response is sent to host computer.
Network manager is whole WirelessHART server, it is responsible for the management of all WirelessHART networked communication resource, dispatches, monitor and optimize, communicate end to end including building network, the configuration network equipment, monitoring network condition, diagnostic network performance, schedules communication resources, management and set up the secure connection etc. with gateway.
Security manager and network manager collaborative work are to ensure that WirelessHART network is Client/Server pattern from hostile threat, the mode of operation between them.Security manager is responsible for producing and management encrypted message used in WirelessHART network, also is responsible for producing, storing and manage various session key.
WirelessHART access point can not directly be connected with industrial process, being connected with WirelessHART gateway by dedicated communication ports of it, and the other end is connected with factory core network.WirelessHART access point field equipment connecting is to gateway, and passes through network path and field apparatus communication.In large-scale WirelessHART network, it is possible to provide multiple WirelessHART access points strengthen reliability and the effective throughput of network, and realize network redundancy.
In WirelessHART network, routing device can be independent router, it is also possible to served as by the WirelessHART network equipment.Routing device can be that a network equipment forwards data to offer another network equipment.Although installing some independent routers can improve network performance, but under normal conditions, the WirelessHART access point of arranged for redundancy being more preferable, because WirelessHART access point can improve the handling capacity of whole network, it is achieved network redundancy.
WirelessHART handheld device safeguards equipment as a kind of portable network, and it uses special configuration to set up the session between oneself and associated devices.Under normal circumstances, WirelessHART handheld device is restricted to communicate with network manager and gateway, or can only communicate with WirelessHART field apparatus every time every time.
Communication between host computer and WirelessHART gateway is by socket, and wherein the default port of gateway is 8890, and the port default of host computer is 8891.Host computer provides an interface communicated with gateway, in order to carry out data exchange by this interface and gateway.The main task that host computer has needed includes: 1) sends order by network interface to gateway, thus obtains information and the nodal information of gateway lower floor of gateway.2) complete to work from the data receiver of gateway.3) data received are carried out dissection process.4) state of adapter and instrument is shown, it is provided that visualization interface, with easily to WirelessHART adapter and the monitoring state of HART instrument.
It is important to note that software section involved by this utility model all can use prior art to realize, innovation of the present utility model is the structure of adapter；Those skilled in the art can construct the WirelessHART adapter being applicable to existing HART device according to technical scheme disclosed in the utility model.
Claims (8)
1. a WirelessHART adapter, for HART device is accessed WirelessHART network, its feature exists
In, described WirelessHART adapter includes:
Power module, for providing electric energy for the consuming parts in WirelessHART adapter；
HART module, for carrying out meeting the data communication of HART protocol with HART device；
WirelessHART wireless module, is used for carrying out meeting the RFDC of WirelessHART agreement between other node and gateway in WirelessHART network；
Control module, is connected with HART module, WirelessHART wireless module respectively, for realizing the data conversion between WirelessHART agreement and HART protocol.
2. WirelessHART adapter as claimed in claim 1, it is characterised in that control module and WirelessHART
The message format meeting WirelessHART agreement is utilized to carry out serial communication between wireless module.
3. WirelessHART adapter as claimed in claim 1, it is characterised in that it has normal mode of operation and stops
Two kinds of mode of operations of sleep mode.
4. WirelessHART adapter as claimed in claim 1, it is characterised in that described HART module uses model
Modem chip for A5191HRT.
5. WirelessHART adapter as claimed in claim 1, it is characterised in that described control module use model is
The microcontroller of EFM32G230F128.
6. WirelessHART adapter as claimed in claim 1, it is characterised in that the model of WirelessHART module
For Awia_220.
7. a WirelessHART network node, including HART device and be connected with described HART device as power
Profit requires WirelessHART adapter described in 1～6 any one.
8. a WirelessHART network, including gateway and can carry out WirelessHART radio communication with gateway and be connected
A group node, it is characterised in that described node is WirelessHART network node described in claim 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620370073.4U CN205596147U (en) | 2016-04-28 | 2016-04-28 | WirelessHART adapter, network node and network |
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| CN201620370073.4U CN205596147U (en) | 2016-04-28 | 2016-04-28 | WirelessHART adapter, network node and network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106973405A (en) * | 2017-03-28 | 2017-07-21 | 浙江大学 | A kind of platform for WirelessHART wireless industrial agreement security tests |
| CN114616926A (en) * | 2019-09-09 | 2022-06-10 | 艾普顿集团有限责任公司 | Connected control device infrastructure |
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2016
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106973405A (en) * | 2017-03-28 | 2017-07-21 | 浙江大学 | A kind of platform for WirelessHART wireless industrial agreement security tests |
| CN114616926A (en) * | 2019-09-09 | 2022-06-10 | 艾普顿集团有限责任公司 | Connected control device infrastructure |
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