CN1466023A - In site bus control system based on controlling local total circuit - Google Patents
In site bus control system based on controlling local total circuit Download PDFInfo
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- CN1466023A CN1466023A CNA021333572A CN02133357A CN1466023A CN 1466023 A CN1466023 A CN 1466023A CN A021333572 A CNA021333572 A CN A021333572A CN 02133357 A CN02133357 A CN 02133357A CN 1466023 A CN1466023 A CN 1466023A
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- local bus
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Abstract
The invention discloses a spot-bus control system based on the control local-area total line, its character: the analog signals: temperature, flow, pressure, etc., as well as the switch signals like limit switch, position switch, etc., are converted by the module into digital signals, which transmitted to CAS bus, then reaching PC through the adapter, and after processed by the industrial configuration software, sent to the CAN bus through the adapter, the analog and switch quantum output modules convert the digital signals from the CAN bus into analog signals and switch quanta, respectively, the analog signals controlling the actuators like valve and the switch quanta controlling the equipments like brake valve, electric machine, etc.
Description
(1). technical field
The invention belongs to industrial control field, the control system of particularly a kind of site of deployment system.
(2). background technology
At present, dcs (hereinafter to be referred as " DCS ") can directly be finished many control function.Widespread use along with computing machine, signal waiting for transmission sharply increases between the on-the-spot checkout equipment and the automation equipment of computerizeing control, in DCS, adopt signal of a cable one-way transmission, become the bottleneck of control system, can not satisfy the needs of digital, two-way, the multivariate communication of current control system.
(3). summary of the invention
Purpose of the present invention provides a kind of fieldbus (hereinafter to be referred as the CAN bus) control system based on control local bus road.It can realize all dataization, two-way, multivariable communication control procedure, is applicable to the on-the-spot checkout equipment of computer control.
For reaching above-mentioned purpose, the present invention is based on the field bus control system on control local bus road, be used for the total digitalization between intelligent field apparatus and pulpit automated system, the communication regulations of two-way many information of multi-master bus formula, realize operation mutually and digital sharing, it is characterized in that: the temperature in the production run, flow, simulating signals such as pressure, and limit switch, switching signals such as position switch, become digital signal to send on the Can bus through the module converts circuit conversion, accept by PC through adapter, after handling, (as adds up industrial control configuration software in PC, report to the police, control etc.) deliver on the Can bus through adapter again, the digital signal that output module transmits the Can bus converts topworkies such as simulating signal by-pass valve control to, the digital signal that output module transmits the Can bus is converted to switching value control gate valve, equipment such as motor, valve, topworks, the variation of the technological parameter that causes after gate valve and the Electric Machine Control, again through module or be sent on the Can bus, with the control whole process of production.
Provide the monitoring station employing of control local bus in computing machine, to deposit industrial control configuration software.
The communication adapter on control local bus road is built on the supervisory control comuter PC slot, has two control local bus road interfaces and connects the communication component of controlling between local bus road and the supervisory control comuter.
Input/output module is analog quantity or digital quantity or other special input/output module.
Computing machine is handled processing such as adopting addition subtraction multiplication and division, evolution power, linearization, mathematical model with the numerical value of in-site measurement signal.The on-the-spot topworks of control is valve, motor, gate valve, relay.
The present invention adopts the CAN bus to support multimode work, and any node can initiatively send information to other node at any time on the network, with acceptance and the transmission data of supporting point-to-point and global network.The present invention adopts the bus arbitration mode, when several nodes occurring simultaneously in Network Transmission information, the node that priority is high continues the transmission data, the node that priority is low initiatively stops to send, to avoid bus collision, therefore the present invention can realize total digitalization, two-way, multivariable communication control procedure, is applicable to the on-the-spot checkout equipment of computer control.
The present invention is described further below in conjunction with accompanying drawing.
(4). description of drawings
Fig. 1 is CAN bus transfer of the present invention, controlling party block diagram.
(5). embodiment
The CAN bus system is made up of intelligent node, CAN bus adapter, upper monitoring station computing machine, network communication media and relevant monitoring software.Wherein:
CAN bus intelligent node is the elementary cell of CAN bus control system, also is the elementary cell of directly carrying out with field apparatus that I/O is connected and carrying out network service with the CAN bus.It provides the I/O of module and digital quantity, directly or by transmitter is communicated with multiple standards signal transducer, actuator, and directly the weak signal of processes sensor is exported control signal according to the calculation process at upper monitoring station.
CAN bus communication adapter built-in with upper monitoring computer PC slot on, have two CAN bus interface, be the communication component that connects between CAN bus network and the upper monitoring computing machine.
CAN bus node intelligent object divides CAN communication module, communication control module and I/O communication module.The CAN communication module is responsible for and CAN network service, mainly is made up of CAN communication controler, CAN transceiver and monolithic processor (MPU), provides power supply by the DC-DC conversion to other module; Communication control module is a core with monolithic processor (MPU), includes circuit such as mould-number and number-Mo conversion, and each I/O communication is gathered and handled, and carries out exchanges data with the CAN communication module; The I/O communication module mainly to the analog quantity and the switching signal at scene gather, signal condition and output.
Referring to Fig. 1.Analog signals, switching signal are converted to data and CAN bus communication signal by the input node, give computing machine through CAN bus and adapter passes, deposit industrial control configuration software in computing machine.Computing machine is with the in-site measurement signal, handle and various control computer through numerical value, computing machine is handled processing such as adopting addition subtraction multiplication and division, evolution power, linearization, mathematical model with the numerical value of in-site measurement signal, its result is passed to output node by adapter and bus, the communication adapter on control local bus road is built on the supervisory control comuter PC slot, has two control local bus road interfaces and connects the communication component of controlling between local bus road and the supervisory control comuter.Change control signal into by node, to control on-the-spot topworks such as valve, motor, gate valve, relay etc.Input/output module is analog quantity or digital quantity or other special input/output module.
Temperature in the production run, flow, simulating signals such as pressure, and limit switch, switching signals such as position switch, converting digital signal to through module 4 or module 6 change-over circuits sends on the Can bus 3, accept by PC 1 through adapter 2, after handling, (as adds up industrial control configuration software in PC 1, report to the police, control etc.) deliver on the Can bus 3 through adapter 2 again, the digital signal that output module 5 transmits Can bus 3 converts topworkies such as simulating signal by-pass valve control to, the digital signal that output module 7 transmits the Can bus is converted to switching value control gate valve, equipment such as motor, valve, topworks, the variation of the technological parameter that causes after gate valve and the Electric Machine Control, be sent on the Can bus 3 through module 4 or 6 again, back and forth make whole process of production realize control automatically thus.
Claims (6)
1. field bus control system based on control local bus road, be used for the total digitalization between intelligent field apparatus and pulpit automated system, the communication regulations of two-way many information of multi-master bus formula, realize operation mutually and digital sharing, it is characterized in that: the temperature in the production run, flow, simulating signals such as pressure, and limit switch, switching signals such as position switch, converting digital signal to through module 4 or module 6 change-over circuits sends on the Can bus 3, accept by PC 1 through adapter 2, after handling, (as adds up industrial control configuration software in PC 1, report to the police, control etc.) deliver on the Can bus 3 through adapter 2 again, the digital signal that output module 5 transmits Can bus 3 converts topworkies such as simulating signal by-pass valve control to, the digital signal that output module 7 transmits the Can bus is converted to switching value control gate valve, equipment such as motor, valve, topworks, the variation of the technological parameter that causes after gate valve and the Electric Machine Control, be sent on the Can bus 3 through module 4 or 6 again, with the control whole process of production.
2. the field bus control system based on control local bus road according to claim 1 is characterized in that: provide the monitoring station employing of control local bus to deposit industrial control configuration software in computing machine.
3. the field bus control system based on control local bus road according to claim 1, it is characterized in that: the communication adapter on control local bus road is built on the supervisory control comuter PC slot, has two control local bus road interfaces and connects the communication component of controlling between local bus road and the supervisory control comuter.
4. the field bus control system based on control local bus road according to claim 1, it is characterized in that: input/output module is analog quantity or digital quantity or other special input/output module.
5. the field bus control system based on control local bus road according to claim 1 is characterized in that: computing machine is handled processing such as adopting addition subtraction multiplication and division, evolution power, linearization, mathematical model with the numerical value of in-site measurement signal.
6. the field bus control system based on control local bus road according to claim 1 is characterized in that: the on-the-spot topworks of control is valve, motor, gate valve, relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021333572A CN1466023A (en) | 2002-06-24 | 2002-06-24 | In site bus control system based on controlling local total circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021333572A CN1466023A (en) | 2002-06-24 | 2002-06-24 | In site bus control system based on controlling local total circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1466023A true CN1466023A (en) | 2004-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021333572A Pending CN1466023A (en) | 2002-06-24 | 2002-06-24 | In site bus control system based on controlling local total circuit |
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| Country | Link |
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| CN (1) | CN1466023A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100395675C (en) * | 2005-10-20 | 2008-06-18 | 同济大学 | Remountable production line control system for vehicle electric machine |
| CN101825889A (en) * | 2010-04-15 | 2010-09-08 | 中国地震局地震研究所 | Intelligent measurement control system |
| US8806092B2 (en) | 2004-02-20 | 2014-08-12 | Fmc Kongsberg Subsea As | Control system for a subsea installation |
| CN104360630A (en) * | 2014-11-11 | 2015-02-18 | 宁夏嘉翔自控技术有限公司 | Central PLC (programmable logic controller) controlled tap water supply system |
| CN104993582B (en) * | 2015-01-27 | 2017-11-14 | 卢洁 | The control method and device of power system |
-
2002
- 2002-06-24 CN CNA021333572A patent/CN1466023A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8806092B2 (en) | 2004-02-20 | 2014-08-12 | Fmc Kongsberg Subsea As | Control system for a subsea installation |
| CN100395675C (en) * | 2005-10-20 | 2008-06-18 | 同济大学 | Remountable production line control system for vehicle electric machine |
| CN101825889A (en) * | 2010-04-15 | 2010-09-08 | 中国地震局地震研究所 | Intelligent measurement control system |
| CN104360630A (en) * | 2014-11-11 | 2015-02-18 | 宁夏嘉翔自控技术有限公司 | Central PLC (programmable logic controller) controlled tap water supply system |
| CN104993582B (en) * | 2015-01-27 | 2017-11-14 | 卢洁 | The control method and device of power system |
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