CN104535205A - Multi-channel temperature value real-time transmission method based on FF protocol - Google Patents
Multi-channel temperature value real-time transmission method based on FF protocol Download PDFInfo
- Publication number
- CN104535205A CN104535205A CN201510003485.4A CN201510003485A CN104535205A CN 104535205 A CN104535205 A CN 104535205A CN 201510003485 A CN201510003485 A CN 201510003485A CN 104535205 A CN104535205 A CN 104535205A
- Authority
- CN
- China
- Prior art keywords
- microprocessor
- data
- transmission method
- method based
- temperature data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000004891 communication Methods 0.000 claims abstract description 33
- 238000012856 packing Methods 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 230000004044 response Effects 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000006870 function Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000012369 In process control Methods 0.000 description 1
- 125000002015 acyclic group Chemical group 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010965 in-process control Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004801 process automation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a multi-channel temperature value real-time transmission method based on an FF protocol, and relates to the field of on-site bus communication methods. Multiple temperature sensors obtain multiple temperature data in real time and transmit the temperature data to a microprocessor, and the microprocessor stores the temperature data into specific units. FF protocol communication units obtain FF bus signals, and transmit the FF bus signals to the microprocessor after modulation, demodulation and level switching, data packets are unpacked through the microprocessor according to the FF protocol format, then the microprocessor performs FF format data packet packing on the temperature data of corresponding channels, and transmits the data packets to the FF protocol communication units, and the FF protocol communication units transmit the data packets to an FF bus. The data of the temperature sensors are stored inside the microprocessor, and the temperature data of the corresponding temperature sensors are read through the corresponding FF protocol communication units.
Description
Technical field
The present invention relates to a kind of field bus communication method, particularly relate to a kind of multichannel temperature value live transmission method based on FF agreement.
Background technology
Foundation fieldbus (Fieldbus Foundation), based on ISO/OSI the Open Systems Interconnection model, gets its Physical layer, corresponding level that data link layer, application layer are FF traffic model, and adds client layer on the application layer.The needs that client layer is applied mainly for automatic measure control, define the uniform rules of Information Access, adopt device Description Language to define general functional block collection.The main technical content of foundation fieldbus comprises FF communication protocol, for completing the communication stack of 2-7 layer communication protocol in opening and interconnecting pattern, for describing device characteristics, parameter, the DDL device Description Language of attribute and operation-interface, device description dictionary, measure for realizing, control, the functional block of the functions such as quantities conversion, realize system configuration, scheduling, the systems software technology of the functions such as management and construct integrated automation system, the system integration technology of network system.
FF is the solution for process automation.FF can linking automation system and the field apparatus comprising pressure, temperature and level transmitter.FF can replace 4 ~ 20mA technology.FF can save the cost more than 40% in plan, wiring, debugging and maintenance phase, and greatly improves at functional and secure context.
FF requires less cable, and when using traditional wiring method, each independent signal wire must be connected to the I/O module of Process Control System, and each equipment needs an independently power supply.By contrast, when using FF, only need two line cables just can transmit power supply needed for all information and field apparatus.This not only reduces wiring cost, and decrease I/O module number required in Process Control System.FF allows to realize measuring, control and demarcating by simple two line cables; It even also allows in intrinsic safety region power supply to the device.FF allows at run duration maintenance, connect/disconnect equipment, and does not affect other stations, even also allows so to do at potential blast area.FF has carried out with the user of process control industries (NAMUR) and has cooperated closely, and meets the particular requirement of this application:
In industrial process automation system, the measurement of temperature is essential, the instrument of common FF agreement is the temperature of an instrument measurement point for measuring temperature, and industrial process automation system is general all very huge, need to arrange a large amount of points for measuring temperature, therefore the metered quantity needed is also very surprising, also makes the wiring of instrument very complicated simultaneously.If based on a parallel temperature measure method for FF technology, make to use the instrument of the FF agreement of the method can realize the temperature of a multiple point for measuring temperature of instrument measurement, so will reduce the cost of industrial process automation system and reduce the complicacy of instrument wiring.
Summary of the invention
The invention discloses a kind of multichannel temperature value live transmission method based on FF agreement, cannot the problem of temperature measuring multiple point for measuring temperature in order to the instrument solving FF agreement of the prior art.
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
A kind of multichannel temperature value live transmission method based on FF agreement, wherein, comprise: the multiple temperature data of multiple temperature sensor Real-time Obtainings, and multiple temperature data is transferred to microprocessor, multiple temperature data is stored to designating unit by microprocessor respectively; FF protocol communication unit obtains FF bus signals, signal is delivered to microprocessor by modulation /demodulation, level conversion by FF protocol communication unit, microprocessor carries out deblocking according to FF protocol format to packet, the temperature data of respective channel is carried out the encapsulation of FF formatted data bag by microprocessor afterwards, afterwards microprocessor by data packet transmission to FF protocol communication unit, FF protocol communication unit by data packet transmission to FF bus.
As above based on the multichannel temperature value live transmission method of FF agreement, wherein, the multiple temperature data of multiple temperature sensor Real-time Obtainings, is transferred to microprocessor by multiple temperature data by multiple temperature data after signal condition and analog to digital conversion.
As above based on the multichannel temperature value live transmission method of FF agreement, wherein, multiple temperature data carries out analog to digital conversion and comprises: filtering, amplification, conversion.
As above based on the multichannel temperature value live transmission method of FF agreement, wherein, multiple temperature data is stored to designating unit by microprocessor respectively, and refreshes designating unit in real time.
As above based on the multichannel temperature value live transmission method of FF agreement, wherein, multiple temperature data is carried out temperature signal calculating, Linearized correction by microprocessor.
As above based on the multichannel temperature value live transmission method of FF agreement, wherein, multiple temperature data transfers to and is with EEPROM (Electrically Erasable Programmable Read Only Memo) to back up by microprocessor.
As above based on the multichannel temperature value live transmission method of FF agreement, wherein, FF bus by data packet transmission to FF main website.
As above based on the multichannel temperature value live transmission method of FF agreement, wherein, before the multiple temperature data of multiple temperature sensor Real-time Obtainings, first carry out instrument initialization operation.
As above based on the multichannel temperature value live transmission method of FF agreement, wherein, the FF request that microprocessor receives FF protocol communication unit is interrupted, and microprocessor takes out the temperature data stored and carries out FF response, and microprocessor sends response message backed off after random and interrupts.
As above based on the multichannel temperature value live transmission method of FF agreement, wherein, FF response comprises: by the temperature value stored in microprocessor by FF protocol requirement carry out packet packing, the judgement of communication frame correctness, function code and length judgement, send respective frame etc. according to request.
In sum, owing to have employed technique scheme, the instrument that the invention solves FF agreement of the prior art cannot the problem of temperature measuring multiple point for measuring temperature, by the data of multiple temperature sensor are stored in microprocessor respectively, and the temperature data being realized corresponding temperature sensor by corresponding FF protocol communication unit is read, the present invention has: a transmitter can substitute the traditional independent mount type instrument of multiple stage, temperature survey is carried out to multiple spot adjacent to each other, reduce the complicacy that measurement point is set, only need to carry out configuration to the parameter of a multi-passage temp. variable transporting device, support FF protocol transmission, be applicable to essential safety occasion, temperature acquisition and request-reply can be carried out in real time, reduce costs, the electronic unit total price of a multi-passage temp. variable transporting device than eight traditional single point temperature transmitters with low 5-6 advantage doubly.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the multichannel temperature value live transmission method that the present invention is based on FF agreement;
Fig. 2 is the FB(flow block) of an embodiment of the multichannel temperature value live transmission method that the present invention is based on FF agreement.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described further:
Fig. 1 is the structured flowchart of the multichannel temperature value live transmission method that the present invention is based on FF agreement, refer to Fig. 1, a kind of multichannel temperature value live transmission method based on FF agreement, wherein, the multiple temperature data of multiple temperature sensor 6 Real-time Obtaining, and multiple temperature data is transferred to microprocessor 1, multiple temperature data is stored to designating unit by microprocessor 1 respectively; FF protocol communication unit 3 obtains FF bus 7 signal, signal is delivered to microprocessor 1 by modulation /demodulation, level conversion by FF protocol communication unit 3, microprocessor 1 carries out deblocking according to FF protocol format to packet, the temperature data of respective channel is carried out the encapsulation of FF formatted data bag by microprocessor 1 afterwards, afterwards microprocessor 1 by data packet transmission to FF protocol communication unit 3, FF protocol communication unit 3 by data packet transmission to FF bus 7.FF protocol communication unit 3 realizes the function of the protocol physical layers of FF, as the modulation /demodulation etc. of synchronous transfer module, level conversion, Manchester's cde, power supply and signal, and carries out bus-powered to instrument.
The multiple temperature data of the present invention's multiple temperature sensor 6 Real-time Obtaining, multiple temperature data is transferred to microprocessor 1 by multiple temperature data after signal condition 4 and analog to digital conversion 2, analog to digital conversion 2 realizes the conversion of temperature signal from analog quantity to digital quantity, signal condition 4 realizes the filtering of analog quantity temperature signal, the undesired signal of filtering industry spot, and realize switching between multiple passage.
The multiple temperature data of the present invention carries out analog to digital conversion 2 and comprises: filtering, amplification, conversion.
Multiple temperature data is stored to designating unit by microprocessor 1 of the present invention respectively, and refreshes designating unit in real time.
More than 1 temperature data is carried out temperature signal calculating, Linearized correction by microprocessor of the present invention.
More than 1 temperature data is transferred to band EEPROM (Electrically Erasable Programmable Read Only Memo) (EEPROM) 5 and backs up by microprocessor of the present invention; EEPROM5 be used for store power down must preserve data.
FF bus 7 of the present invention by data packet transmission to FF main website.
Fig. 2 is the FB(flow block) of an embodiment of the multichannel temperature value live transmission method that the present invention is based on FF agreement, refer to Fig. 2, in one embodiment of the invention: industrial control network supports FF protocol transmission, wherein FF main website, primary responsibility communication cycle, or acyclic communications function, the request of data of appropriate address is handed down to the intelligent multi-channel temperature transmitter met the demands by it by FF bus, after intelligent multi-channel temperature transmitter have received FF claim frame, carry out a temperature acquisition, gather after terminating and return to FF main website by FF bus again.
First carry out instrument initialization operation before the multiple temperature data of the present invention's multiple temperature sensor 6 Real-time Obtaining, instrument initialization is a series of actions of instrument powered on moment.
Further, in one embodiment of the invention: instrument initialization, comprise the operations such as CPU initialization of register, SPC4-2 initialization, communication module initialization, Measurement channel initialization, wherein CPU initialization of register contains the configuration of I/O mouth, house dog configuration and interrupt configuration; SPC4-2 initialization relates to RAM configuration, the initialization of SAP region, buffer zone initialization and DPV0/DPV1 and serves initial configuration; Measurement channel initialization makes AD controller enter into default conditions, to start sampling work at any time.
The FF request that microprocessor of the present invention receives FF protocol communication unit 3 is interrupted, and microprocessor 1 takes out the temperature data stored and carries out FF response, and microprocessor 1 sends response message backed off after random and interrupts.
Further, FF asks to interrupt, the data mainly in SPC4-2 intelligent communication chip automatic reception FF bus, and notifies CPU in the mode of interrupting.Interrupt service routine will set reception buffer zone when message just receives, to be received complete after, data reading is transmitted parsing.
FF of the present invention response comprises: by the temperature value stored in microprocessor 1 by FF protocol requirement carry out packet packing, the judgement of communication frame correctness, function code and length judgement, send respective frame etc. according to request.
The present invention also comprises: AD sampling and process, mainly realizes reading A/D sampled value, data processing, the functions such as conversion unit.
Claims (10)
1. the multichannel temperature value live transmission method based on FF agreement, it is characterized in that, the multiple temperature data of multiple temperature sensor Real-time Obtainings, and multiple temperature data is transferred to microprocessor, multiple temperature data is stored to designating unit by microprocessor respectively; FF protocol communication unit obtains bus signals, signal is delivered to microprocessor by modulation /demodulation, level conversion by FF protocol communication unit, microprocessor carries out deblocking according to FF protocol format to packet, the temperature data of respective channel is carried out the encapsulation of FF formatted data bag by microprocessor afterwards, afterwards microprocessor by data packet transmission to FF protocol communication unit, FF protocol communication unit by data packet transmission to bus.
2. the multichannel temperature value live transmission method based on FF agreement according to claim 1, it is characterized in that, the multiple temperature data of multiple temperature sensor Real-time Obtainings, is transferred to microprocessor by multiple temperature data by multiple temperature data after signal condition and analog to digital conversion.
3. the multichannel temperature value live transmission method based on FF agreement according to claim 2, it is characterized in that, multiple temperature data carries out analog to digital conversion and comprises: filtering, amplification, conversion.
4. the multichannel temperature value live transmission method based on FF agreement according to claim 1, it is characterized in that, multiple temperature data is stored to designating unit by microprocessor respectively, and refreshes designating unit in real time.
5. the multichannel temperature value live transmission method based on FF agreement according to claim 1, it is characterized in that, multiple temperature data is carried out temperature signal calculating, Linearized correction by microprocessor.
6. the multichannel temperature value live transmission method based on FF agreement according to claim 1, is characterized in that, multiple temperature data is transferred to band EEPROM (Electrically Erasable Programmable Read Only Memo) and backs up by microprocessor.
7. the multichannel temperature value live transmission method based on FF agreement according to claim 1, is characterized in that, bus by data packet transmission to FF main website.
8. the multichannel temperature value live transmission method based on FF agreement according to claim 1, is characterized in that, first carries out instrument initialization operation before the multiple temperature data of multiple temperature sensor Real-time Obtainings.
9. the multichannel temperature value live transmission method based on FF agreement according to claim 8, it is characterized in that, the FF request that microprocessor receives FF protocol communication unit is interrupted, and microprocessor takes out the temperature data stored and carries out FF response, and microprocessor sends response message backed off after random and interrupts.
10. the multichannel temperature value live transmission method based on FF agreement according to claim 9, it is characterized in that, FF response comprises: by the temperature value stored in microprocessor by FF protocol requirement carry out packet packing, the judgement of communication frame correctness, function code and length judgement, send respective frame etc. according to request.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510003485.4A CN104535205A (en) | 2015-01-06 | 2015-01-06 | Multi-channel temperature value real-time transmission method based on FF protocol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510003485.4A CN104535205A (en) | 2015-01-06 | 2015-01-06 | Multi-channel temperature value real-time transmission method based on FF protocol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104535205A true CN104535205A (en) | 2015-04-22 |
Family
ID=52850779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510003485.4A Pending CN104535205A (en) | 2015-01-06 | 2015-01-06 | Multi-channel temperature value real-time transmission method based on FF protocol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104535205A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112596428A (en) * | 2020-12-02 | 2021-04-02 | 浙江中控技术股份有限公司 | FF field bus intrinsic safety isolation gate and signal bidirectional transmission method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2582057Y (en) * | 2002-11-18 | 2003-10-22 | 中国船舶重工集团公司第七一一研究所 | Main circuit board based on field bus for temp/pressure sensor |
| CN102087144A (en) * | 2009-12-03 | 2011-06-08 | 北京华控技术有限责任公司 | Foundation field bus (FF) H1 temperature measuring device |
| US20130282931A1 (en) * | 2012-04-23 | 2013-10-24 | General Electric Company | Automatic foundation fieldbus device commissioning |
-
2015
- 2015-01-06 CN CN201510003485.4A patent/CN104535205A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2582057Y (en) * | 2002-11-18 | 2003-10-22 | 中国船舶重工集团公司第七一一研究所 | Main circuit board based on field bus for temp/pressure sensor |
| CN102087144A (en) * | 2009-12-03 | 2011-06-08 | 北京华控技术有限责任公司 | Foundation field bus (FF) H1 temperature measuring device |
| US20130282931A1 (en) * | 2012-04-23 | 2013-10-24 | General Electric Company | Automatic foundation fieldbus device commissioning |
Non-Patent Citations (4)
| Title |
|---|
| 党昊驰等: ""多点输入温度变送器的应用"", 《石油化工自动化》 * |
| 王东华: ""温度变送器的应用"", 《电气时代 自动化系统工程专辑》 * |
| 王凯: ""首批经现场总线基金会注册的温度变送器"", 《微计算机信息》 * |
| 蒋丽: "《计算机网络技术与应用 第2版》", 31 March 2013 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112596428A (en) * | 2020-12-02 | 2021-04-02 | 浙江中控技术股份有限公司 | FF field bus intrinsic safety isolation gate and signal bidirectional transmission method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106131056B (en) | Industrial wireless adapter and working method thereof | |
| US20120230446A1 (en) | Method and Apparatus for Incorporating a WirelessHART-Enabled Device into a Wired HART Network | |
| CN102375437A (en) | Device and method for data acquisition and transmission during wireless production process based on IEEE802.15.4 protocol and PLCs (programmable logic controllers) | |
| CN103123470A (en) | Method for controlling a field device | |
| CN104820395A (en) | Wireless remote water quality multiparameter measurement and control system based on king view and PLC, and method thereof | |
| CN104965808A (en) | Device for implementing serial port multiplexing and serial port multiplexing method | |
| CN104486783B (en) | Polymorphic wireless gateway system and control method for polymorphic wireless monitor network | |
| CN103984323A (en) | Integrated configurable industrial information monitoring, analyzing and controlling system | |
| CN103326936A (en) | Multi-protocol gateway of Internet of Things allowing unified access of various heterogeneous sensing layer networks | |
| CN104506401A (en) | Method for achieving Modbus protocol transmission based on ISA100.11a industrial sensor network | |
| CN104659918A (en) | Smart grid information management device fused with IEC (international electrotechnical commission) 61850 protocol | |
| CN103728957B (en) | HART (highway addressable remote transducer) field equipment management method and system based on real-time database | |
| CN103763395A (en) | Middleware connecting internet of things management platform with terminal device and working method of middleware | |
| CN108345558A (en) | It is a kind of that the RS485 collection of multi-protocols is supported to match unit | |
| US20210271228A1 (en) | Terminal module, head module, and system for collecting data from an automation system | |
| CN104535205A (en) | Multi-channel temperature value real-time transmission method based on FF protocol | |
| CN207457812U (en) | Numerical control communication apparatus | |
| CN110166970A (en) | A kind of comprehensive energy monitoring system and method | |
| CN204612811U (en) | Support the intelligent multi-channel temperature transmitter of FF agreement | |
| CN104616477A (en) | Profibus-PA technology-based multi-channel real-time temperature measurement method | |
| CN104714493B (en) | A kind of intelligent automation network communicated based on IP agreement | |
| CN202231741U (en) | Frequency converter communication system | |
| CN106776435A (en) | intelligent CAN hub | |
| CN204423035U (en) | A kind of DT-CM128 bus acquisition monitoring device | |
| CN105049432A (en) | Protocol conversion method of Ethernet based on real-time data bus and 2M multiplex channel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI AUTOMATION INSTRUMENTATION CO., LTD. Free format text: FORMER OWNER: SHANGHAI AUTOMATIC INDUSTRUMENT AND METER CO LTD Effective date: 20150608 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150608 Address after: Zhabei District Shanghai City 200072 West Guangzhong Road No. 191 Building No. 7 Applicant after: Shanghai instrument and meter for automation company limited Address before: Zhabei District Shanghai City 200072 West Guangzhong Road No. 191 Building No. 7 Applicant before: Shanghai Automatic Industrument and Meter Co., Ltd. |
|
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150422 |
|
| RJ01 | Rejection of invention patent application after publication |