CN108011796A - A kind of intelligent temperature acquisition system - Google Patents
A kind of intelligent temperature acquisition system Download PDFInfo
- Publication number
- CN108011796A CN108011796A CN201711295056.4A CN201711295056A CN108011796A CN 108011796 A CN108011796 A CN 108011796A CN 201711295056 A CN201711295056 A CN 201711295056A CN 108011796 A CN108011796 A CN 108011796A
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- China
- Prior art keywords
- connection
- terminal
- acquisition system
- temperature acquisition
- intelligent temperature
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40052—High-speed IEEE 1394 serial bus
- H04L12/40078—Bus configuration
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40169—Flexible bus arrangements
- H04L12/40176—Flexible bus arrangements involving redundancy
- H04L12/40182—Flexible bus arrangements involving redundancy by using a plurality of communication lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40228—Modbus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The present invention relates to data acquisition and field of communication technology data acquisition and field of communication technology, especially a kind of intelligent temperature acquisition system, including collection in worksite module, data conversion module and real-time communication module, further include preceding terminated line, preceding terminated line includes power cord, connection and analog measurement front end signal wiring, connection is 485 dual bus, communication can not be carried out at the same time and influence each other by effectively solving existing monobus, it not can connect to two different systems, can not realize real double character coupling problem；In addition network redundancy configuration is lifted, it is ensured that communication security.
Description
Technical field
The present invention relates to data acquisition and field of communication technology, especially a kind of intelligent temperature acquisition system.
Background technology
There are many data acquisitions for all kinds simulation monitoring point and the headend equipment to communicate in the prior art,
But existing composition network can not be carried out at the same time communication for a bus under normal conditions, cannot also be connected to two differences at the same time
System, can not realize double character coupling；Existing facility environment adapts at the same time and antijamming capability is very weak, can not be suitable for pot
The more severe place of the temperature environments such as furnace roof portion, can not obtain the popularization and application of large area.
The content of the invention
The technical problem to be solved in the present invention is：In order to solve existing monobus can not be carried out at the same time communication and mutual shadow
Ring, it is impossible to be connected to two different systems, can not realize real double character coupling problem, the present invention provides a kind of intelligence
Temperature acquisition system, including collection in worksite module, data conversion module and real-time communication module, further include preceding terminated line, institute
Terminated line includes power cord, connection and analog measurement front end signal wiring before stating, and the connection is dual bus, effectively
Solve existing monobus can not be carried out at the same time communication and influence each other, it is impossible to be connected to two different systems, Wu Fashi
Now real double character coupling problem.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of intelligent temperature acquisition system, including collection in worksite module, data conversion module and real-time communication module, also
Including preceding terminated line, the preceding terminated line includes power cord, connection and analog measurement front end signal wiring, the simulation
The wiring of measurement front end signal includes thermocouple signal measurement wiring, the measurement wiring of three-wire system thermal resistance and two-wire system transducer
Wiring is measured, wherein, the connection is 485 dual bus.
Further, can when measured resistance resistance value is larger, and error caused by lead resistance is not enough to influence measurement accuracy
By L, G end, short circuit, i.e., described three-wire system thermal resistance measurement wiring are changed into two-wire system thermal resistance measurement and connect directly at wire connection terminal
Line.
Further, firewire access is denoted as the terminal of " L " in the power cord, zero curve should access the end for being denoted as " N "
Son, ground wire should access the terminal for being denoted as " G ".
Further, the model of the thermal resistance can be BA1, BA2, Pt100, Cu50, Cu100 and G53.
Further, the connection uses 485 bus MODBUS communications protocol as linear bus structure, i.e., all extensions
The "+" for the front end being connected in a network, "-" terminal are connected by communication bus order.
Further, the communication bus of A nets is connected to the A nets communication terminal ("+" of communication bus of No. 1 front end from DCS sides
Termination " A+ ", negative terminal connect " A- ") and then at terminal and it is connected to A nets communication terminal (" A+ " of i.e. No. 1 front end of No. 2 front ends again
Be connected with " A+ " of No. 2 front ends, " A- " of No. 1 front end is connected with " A- " of No. 2 front ends), be equally linked in sequence to No. 3 and after
The front end in face；Wherein, the mode of connection of B nets and A nets are identical.
Further, the connection uses Shielded Twisted Pair, line footpath 0.6-1mm.
Further, the connection uses the twisted-pair feeder of model RVVP-2 × 0.75.
The beneficial effects of the invention are as follows：
(1) the present invention provides a kind of intelligent temperature acquisition system, including collection in worksite module, data conversion module and
Real-time communication module, further includes preceding terminated line, and the preceding terminated line includes power cord, connection and analog measurement front end letter
Number wiring, the connection is dual bus, and communication can not be carried out at the same time and influence each other by effectively solving existing monobus, no
Two different systems are can connect to, can not realize real double character coupling problem；
(2) double-serial port is used, dual bus can be carried out at the same time communication and be independent of each other after forming network, and two networks can use
Different baud rates, can also be connected to two different systems at the same time, be real double character coupling, open strong, due to adopting
With field bus technique, long-distance intelligent I/O have it is open well, communications protocol be it is complete open and disclosed, very
It is easy to network with other systems particularly DCS；Scene display and configuration HK-IDAS remote I/O equipment utilization liquid crystal displays are adopted
With menu in Chinese interface, make live configuration very convenient, test data shows more directly perceived；High anti-jamming capacity and environment adapt to
Property, balanced differential transmission mode and the babinet knot designed for the severe feature of industrial environment that intelligent monitoring front end uses
Structure, has very strong environment adaptation and antijamming capability, and distributed remote intelligence I/O environment temperatures are -20 DEG C~70 DEG C, are prevented
Shield grade is IP56, therefore suitable for more severe places of temperature environment such as boiler tops.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the power supply terminal wiring diagram of the present invention；
Fig. 2 is connection connection diagram between front end of the invention；
Fig. 3 is the IDCB-4E terminal arrangement schematic diagrames of the present invention；
Fig. 4 is the thermocouple temperature measurement wiring diagram schematic diagram of the present invention, wherein, a cold ends front end at wire connection terminal is mended automatically
Repay；B cold ends constant temperature in thermostat compensates；C cold ends are at other terminal boxes；
Fig. 5 is the three-wire system thermal resistance measurement wiring schematic diagram of the present invention；
Fig. 6 is the two-wire system resistance measurement wiring schematic diagram of the present invention；
Fig. 7 is the two-wire system transducer measurement wiring schematic diagram of the present invention；
Fig. 8 is connection wiring schematic diagram.
In figure：, should be with the temperature at another channel measurement terminal box, then with the measurement of the passage in the c figures of Fig. 4
Value is compensated as cold junction temperature；In Fig. 3, H, L, G of each passage represent the cathode of signal input, anode 1 successively in figure
With anode 2.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows composition related to the present invention.
A kind of intelligent temperature acquisition system, including collection in worksite module, data conversion module and real-time communication module, also
Including preceding terminated line, the preceding terminated line includes power cord, connection and analog measurement front end signal wiring, the simulation
The wiring of measurement front end signal includes thermocouple signal measurement wiring, the measurement wiring of three-wire system thermal resistance and two-wire system transducer
Wiring is measured, wherein, the connection is dual bus.
In a kind of embodiment, when measured resistance resistance value is larger, error caused by lead resistance is not enough to influence
, can short circuit, i.e. three-wire system thermal resistance measurement wiring be changed into two-wire system directly at wire connection terminal by L, G end during measurement accuracy
Thermal resistance measures wiring.
In a kind of embodiment, firewire access is denoted as the terminal of " L " in the power cord, zero curve should access mark
It is shown as the terminal of " N ", ground wire should access the terminal for being denoted as " G ".
In a kind of embodiment, the model of the thermal resistance can be BA1, BA2, Pt100, Cu50, Cu100 and
G53。
In a kind of embodiment, the connection is using 485 bus MODBUS communications protocol as linear bus
Structure, i.e., the "+" of all front ends being articulated in a network, "-" terminal are connected by communication bus order.
In a kind of embodiment, the communication bus of A nets is connected to the A net communication terminals of No. 1 front end from DCS sides
("+" termination " A+ ", the negative terminal of communication bus connect " A- ") and then at terminal and it is connected to the A net communication terminals of No. 2 front ends again
It is (" A+ " of i.e. No. 1 front end is connected with " A+ " of No. 2 front ends, " A- " of No. 1 front end is connected with " A- " of No. 2 front ends), same suitable
Sequence is connected to No. 3 and front end below；Wherein, the mode of connection of B nets and A nets are identical.
In a kind of embodiment, the connection uses Shielded Twisted Pair, line footpath 0.6-1mm.
In a kind of embodiment, the connection uses the twisted-pair feeder of model RVVP-2 × 0.75.
It is as follows with the physical interface mode situation of DCS system interface
Communication modes：Half-duplex asynchronous communication；
Network redundancy：Double 485 buses, can simultaneous communications；
Connecter type：RS485/232 interfaces；
Communications protocol：ModBus RTU；
Master slave relation：DCS is main website, and remote I/O front end is slave station；
Communication speed：2.4Kbps, 4.8Kbps, 9.6Kbps and 19.2Kbps are optional；
Data format：1/ data bit of start bit, 8/ stop position, 1/ no parity.
Remote I/O MODBUS network technology indexs are as follows:
Linked network main website number：1~2
The front end address range of definition is：1~255
Main website type：DCS, industrial personal computer, compatible, notebook, portable machine.
Linked network slave station number (the front end number that can be mounted in a network)：≤50
Network topology structure：Linear bus, are having terminal organ (build-out resistor) at both ends when distance is longer, and stub≤
0.3m, no branch
Transmission medium：Shielded Twisted Pair
Communication speed：2.4K, 4.8K, 9.6K, 19.2K can be set.
Basic communication distance:1.2km
Network communication mode：Half-duplex asynchronous communication
Communication physical layer：RS485
Network Isolation degree：600V
Data format：1 start bit, 8 data bit, a stop position, no parity
Communications protocol：MODBUS agreement RTU modes
Communication verification：CRC cyclic redundancy check
Analog measurement front end the key technical indexes is as follows:
Input channel number:20 tunnel, three terminal Differential Input
Channel separation voltage:400V (peak-to-peak value)
Network Isolation voltage：600V
Thermocouple:S、K、J、T、R、B、N、E
Thermal resistance:Pt100、Cu50、Cu100、BA1、BA2、G53
Cold junction compensation mode:Automatically (environment temperature) compensation, constant temperature compensation, other channel compensations
Thermal resistance measurement method：3/2 line system
Transmitter measurement method：4/2 line system, 4mA -20mA measurement ranges
Resolution ratio:16
Measurement accuracy：0.1 grade
The channel sample time:30mS/ passages
Common-mode rejection ratio:120dB
Series mode rejection ratio:70dB
Major function：Thermal resistance, thermocouple conversion, transmitter data collection conversion, system calibration, watchdog circuit, show
Field display and configuration；
Environment temperature：- 20 DEG C~70 DEG C
Relative humidity≤95%
Power supply：165~250VAC
Degree of protection：IP56
It is complete by above-mentioned description, relevant staff using the above-mentioned desirable embodiment according to the present invention as enlightenment
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to determines its technical scope according to right.
Claims (8)
1. a kind of intelligent temperature acquisition system, including collection in worksite module, data conversion module and real-time communication module, it is special
Sign is：Preceding terminated line is further included, the preceding terminated line connects including power cord, connection and analog measurement front end signal
Line, the analog measurement front end signal wiring include thermocouple signal measurement wiring, three-wire system thermal resistance measurement wiring and
Two-wire system transducer measures wiring, wherein, the connection is dual bus.
A kind of 2. intelligent temperature acquisition system as claimed in claim 1, it is characterised in that：When measured resistance resistance value is larger, draw
Error caused by line resistance be not enough to influence measurement accuracy when, can by L, G end directly at wire connection terminal short circuit, i.e., described three line
Thermal resistance measurement wiring is changed into the measurement wiring of two-wire system thermal resistance.
A kind of 3. intelligent temperature acquisition system as claimed in claim 1, it is characterised in that：Firewire access mark in the power cord
It is shown as the terminal of " L ", zero curve should access the terminal for being denoted as " N ", ground wire should access the terminal for being denoted as " G ".
A kind of 4. intelligent temperature acquisition system as claimed in claim 1, it is characterised in that：The model of the thermal resistance can be
BA1, BA2, Pt100, Cu50, Cu100 and G53.
A kind of 5. intelligent temperature acquisition system as claimed in claim 1, it is characterised in that：The connection is using 485 communications
Bus is suitable by communication bus as linear bus structure, i.e., the "+" of all front ends being articulated in a network, "-" terminal
Sequence is connected.
A kind of 6. intelligent temperature acquisition system as claimed in claim 1, it is characterised in that：The communication bus of A nets connects from DCS sides
It is connected to the A nets communication terminal ("+" termination " A+ ", the negative terminal of communication bus connect " A- ") of No. 1 front end and then at terminal and connects again
To the A nets communication terminals of No. 2 front ends, (" A+ " of i.e. No. 1 front end is connected with " A+ " of No. 2 front ends, " A- " of No. 1 front end and No. 2
" A- " of front end be connected), the front end that is equally linked in sequence to No. 3 and below；Wherein, the mode of connection of B nets and A nets are identical.
A kind of 7. intelligent temperature acquisition system as claimed in claim 6, it is characterised in that：The connection is using shielding multiple twin
Line, line footpath 0.6-1mm.
A kind of 8. intelligent temperature acquisition system as claimed in claim 7, it is characterised in that：The connection uses model
The twisted-pair feeder of RVVP-2 × 0.75.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711295056.4A CN108011796A (en) | 2017-12-08 | 2017-12-08 | A kind of intelligent temperature acquisition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711295056.4A CN108011796A (en) | 2017-12-08 | 2017-12-08 | A kind of intelligent temperature acquisition system |
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| Publication Number | Publication Date |
|---|---|
| CN108011796A true CN108011796A (en) | 2018-05-08 |
Family
ID=62057787
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711295056.4A Pending CN108011796A (en) | 2017-12-08 | 2017-12-08 | A kind of intelligent temperature acquisition system |
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| Country | Link |
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| CN (1) | CN108011796A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556655A (en) * | 2018-11-19 | 2019-04-02 | 河北省机电体化中试基地 | A kind of regenerative heat-exchange system temperature and liquid level integral type acquire pick-up device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504554A (en) * | 2009-02-23 | 2009-08-12 | 桂林工学院 | Input signal processing method for on-site bus type temperature observing and controlling module |
| CN203758635U (en) * | 2013-12-31 | 2014-08-06 | 上海自动化仪表股份有限公司 | Wireless intelligent temperature transmitter |
-
2017
- 2017-12-08 CN CN201711295056.4A patent/CN108011796A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504554A (en) * | 2009-02-23 | 2009-08-12 | 桂林工学院 | Input signal processing method for on-site bus type temperature observing and controlling module |
| CN203758635U (en) * | 2013-12-31 | 2014-08-06 | 上海自动化仪表股份有限公司 | Wireless intelligent temperature transmitter |
Non-Patent Citations (1)
| Title |
|---|
| JHB20JHB05: "IDCB系列前端命名方式及基本型号介绍", 《百度文库》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556655A (en) * | 2018-11-19 | 2019-04-02 | 河北省机电体化中试基地 | A kind of regenerative heat-exchange system temperature and liquid level integral type acquire pick-up device |
| CN109556655B (en) * | 2018-11-19 | 2021-04-27 | 河北省机电一体化中试基地 | Temperature and liquid level integrated acquisition and transmission device of heat accumulating type heat exchange system |
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Application publication date: 20180508 |
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