CN102298380A - Intelligent control network on the basis of on-site bus technology - Google Patents
Intelligent control network on the basis of on-site bus technology Download PDFInfo
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- CN102298380A CN102298380A CN2011102427614A CN201110242761A CN102298380A CN 102298380 A CN102298380 A CN 102298380A CN 2011102427614 A CN2011102427614 A CN 2011102427614A CN 201110242761 A CN201110242761 A CN 201110242761A CN 102298380 A CN102298380 A CN 102298380A
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Abstract
The invention discloses an intelligent control network on the basis of an on-site bus technology. The intelligent control network comprises a CAN controller and CAN terminal nodes. The network is characterized in that: a CAN bus protocol is employed for communication between the CAN bus controller and the CAN terminal nodes; and the CAN bus protocol is also utilized to carry out communication between the CAN terminal nodes. According to the intelligent control network on the basis of the on-site bus technology provided in the invention, due to a simple and unified CAN bus mode, a long- distance control system that has advantages of high real-time performance, low failure rate, strong scalability, stability and reliability and wide applicability is realized.
Description
Technical field
The present invention relates to a kind of intelligent control network, relate in particular to intelligent control network based on field bus technique.
Background technology
CAN is the serial communication protocol of iso standardization, and the CAN field bus technique is widely used in aspects such as Auto Electronic Controlled System, industrial shipboard automation, medical treatment and commercial unit with many technical advantages such as its traffic rate height, antijamming capability are strong, communication distance is long (can reach more than the km), communication stable, cost is lower.Perfect along with technology is applied in the Industry Control scene more widely.
The CAN bus is a kind of many principals and subordinates bus system, and arbitrary node can initiatively send information to online other nodes at any one time on the network, is regardless of the principal and subordinate, is convenient to make up dcs.Communication media can be twisted-pair feeder, concentric cable or optical fiber, and traffic rate can reach 1Mbps.
Multiple intelligence control system has appearred at present, as the power switch of Smart Home power supply control, the total line traffic control of CAN, housing intelligent control device etc., widespread use the CAN bus.
CN201020219542.5 discloses a kind of Smart Home power-supply controller of electric, structure as shown in Figure 1, and it relates to a kind of by Local Control Module and Long-distance Control control techniques, uses general purpose controller to realize remote household electrical appliance, equipment wireless control.The controller of the duty of infrared remote-control device interface control household electrical source and household electrical appliance, embedded microprocessor connects Local Control Module, RCI, Power Management Unit and actuator apparatus.Local Control Module is that infrared transceiver is formed.RCI has Zigbee wave point and CAN bus interface.The in check output pin of the digital power switch of actuating unit links to each other with the live wire of AC power, the supply socket of output termination household electrical source, electrical equipment.This utility model is by the duty of Local Control Module and RCI control household electrical source and household electrical appliance, satisfy the user at any time, anywhere, the demand of power supply and electrical work state in the control man under the free position.
Yet it will be noted that the disclosed system of this application can only control limited digital power switch, only can realize controller control forceful electric power switch, and then the start and stop function of the equipment of realization; Can only concentrate reading state and sending controling instruction by master controller; CAN interface and Zigbee wireless communication interface are provided roughly, do not relate to the design and the realization of communication network protocol between the controller; Do not relate to host computer Control on Communication principle; The infrared control interface function is single, can not adapt to each kind, multiple model device, and the disclosed technology switch of this application uses the digital power switch, and thermal value is big, the cost height, and turn-off unreliablely, leakage current is arranged.It is fixing to should be noted that simultaneously Control Network that this technology can realize makes up, and can't realize real-time carry.
CN200720139203.4 discloses the power switch of the total line traffic control of a kind of CAN, as shown in Figure 2, includes solid-state relay, CAN node, CAN node power module and auxiliary circuit and forms.Based on the Can bussing technique, host computer can be controlled power switch by twisted-pair feeder, realize the control that turns on and off of power supply, and the on off state of power supply own can feed back to host computer by the CAN bus.This power switch all component all is solidificated in the integrated module of a compact conformation, constitutes the power switch of the band CAN bus control interface of independent completion.
Yet the disclosed technology of this application is used solid-state relay, can produce leakage current, and pressure drop is big, temperature rise, and product reliability is low; Employed MCU, CAN controller, transceiver etc. are individual components, can increase cost, reduce reliability, increase small product size and power consumption.
The power switch of employed independent completion means that extendability is poor, function singleness, and range of application is little.
It is bigger to encapsulate for the power switch of long-time use problem such as heat radiation fully, and failure rate raises.
This technology concentrates on the switch control application of individual node on the whole, and function is simple, and applicable surface is narrow.
CN01246833.9 discloses a kind of housing intelligent control device, as shown in Figure 3, is a kind of intelligent apparatus that is used for dwelling house security and intelligent monitoring.This device mainly solves the monitoring alarm of dwelling house, and " three tables " far-end is sent a duplicate to the comprehensive intelligent chemical control system problem of remote control residential electricity.Whole device comprises the dwelling house main control system, access controller, hand-held remote control unit, household electrical appliance on-off controller, household appliance remote control controller, wireless door magnetic sensor, seven parts such as wireless probe adapter.Main frame externally connects telephone wire and cell management data bus respectively, internally distinguishes various controllers and sensor in the junction chamber, carries out monitor alarm, and instrument is sent a duplicate to, the electrical equipment remote control.Main frame is provided with telephone wire, CAN bus, inner RS232, probe and a plurality of interfaces of radio.Existing wired connection passage has radio link channel again, and existing telephone line interface is used for the networking of Da Qu system, has field-bus interface to be used for cell networking again.
Yet there is following defective in the disclosed technical scheme of this application:
1, interface quantity is many, and unfavorable signal is unified to be transmitted, and hardware and software cost all has significantly lifting;
2, the whole host-guest architecture that belongs to, the reading of signal handled, and the transmission of order all is to be finished by central control unit, and error probability is big, systemic breakdown possibility height, and can't in time handle for the real-time request.
3, power module is handled simply, is unfavorable for stable power-supplying, the failure rate height.
4, system's bulky complex is unfavorable for maintenance and expansion.
5, do not relate to the design and use of upper-layer protocol.
Comprehensive above-mentionedly can see, existing control system, be applied to the control of industry spot and household automation for the CAN bussing technique, prior art mainly concentrates on the realization of single switch node, do not relate to each internodal logic control agreement and with the mutual implementation of host computer.Use for Smart Home, the switch of only controlling power supply obviously is not the perfect condition of future life mode, and for comfortable reliable mode of operation, the realization of various and compatible good terminal operation is badly in need of can realizing by research of technique.And for industry spot, intelligent building Control Network etc., safe and reliable communication and control, stablizing various mode of operation then is the problem that needs most concern.
Technical scheme disclosed by the invention by simple unified bus mode, realizes long distance, high real-time, and less trouble, extensibility is strong, and is reliable and stable, widely applicable control system.
Summary of the invention
The invention discloses intelligent control network based on field bus technique, at having now based on the existing problem of bus-structured intelligence control system, provide a kind of comprehensive, the solution that extendability is strong, satisfy the user and whenever and wherever possible system is operated and monitors, and have outstanding operating experience.
Intelligent control network based on field bus technique disclosed by the invention, comprise CAN controller and CAN terminal node, it is characterized in that adopting between the described CAN terminal node CAN bus protocol to carry out communication, adopt the CAN bus protocol to carry out communication between CAN controller and the CAN terminal node.
Among the present invention, used the communication between the CAN bus protocol realization CAN node, on this basis, the present invention is also further by internodal identification of upper-layer protocol standard and priority, realize information communication between node, and realize the real-time carry of system node by the mode of consulting with exchange, finish the formulation of system's baud rate.Described upper-layer protocol is packed according to rule to data, transmit, and from each primitive frame (the basic communication unit of CAN) of CAN, extract the information of transmission, and judge in the transmittance process and whether make mistakes because be interfered, and finally obtain complete, available data, thus realize data communication.Thereby information Recognition and definition have more accurately been realized, in order in the CAN network, and CAN network and host computer communicate, at big data quantity, realize the affirmation of internodal identification and priority in the multinode network, realize information communication between node, and realize the real-time carry of system node, and finish the formulation of system's baud rate by mode with the exchange negotiation.By adopting upper-layer protocol to communicate, the data that further guaranteed intelligence control system can be carried out accurate, reliable on bus, transmit also timely and are understood.
To those skilled in the art, also can adopt the communication between some other field bus protocol realization node, for example RS485, Profibus, X-10, CEBus, EIB, ApBus, I2C, SPI, LonWork, HART, FF, Zigbee etc., above-mentioned field bus protocol is widely known, the technology contents of its representative can learn from disclosed technical standard that all suchlike technological concept, technology contents, implementation method are that those skilled in the art can be known and realize.Adopt this type of bus protocol substitute CAN bus protocol of the present invention realize communication between terminal node be those skilled in the art expect easily be equal to replacement, still belong to protection scope of the present invention.Yet it is optimum for the present invention, adopting the CAN bus protocol.
In the present invention, described CAN controller is integrated in MCU inside, and the CAN controller is realized communicating by letter of CAN terminal node and bus by the CAN transponder chip.CAN bus communication among the present invention can be by multiple chip microcontroller, comprise the STC series of products, the PIC series of products, the AVR series of products, it is widely used that ATM series of products etc. are this area, the chip that integrated CAN bus controller is wherein arranged, also have by CAN bus transceivers such as CAN bus controllers such as SJA1000 connection 82C250 and realize communication, yet this implementation reliability is lower, the circuit complexity, the power consumption height, chip area is big, therefore used MCU is preferably STM8 and STM32 series monolithic among the present invention, and its inner integrated CAN controller is realized communicating by letter of CAN node and bus by CAN transponder chip 82C250.
In the present invention, the CAN terminal node is connected with A/D modular converter and digital control module, realizes that the signal of multiple terminal receives, and dissection process becomes corresponding data, realizes control to terminal device for other CAN terminal node by the communication of CAN bus protocol.
Described multiple terminal comprises sensor, switch, controller.Described sensor comprises one or more in infrared sensor, pressure transducer, humidity sensor, the temperature sensor; Described switch comprises one or more in mechanical switch, touch key-press, touch draw runner, the touch roller; Described controller comprises one or more in temperature control, acoustic control, light-operated, the infrared remote control.
Above-mentioned touch key-press especially can be a RC capacitance touch button, realize contactless, the impression of the execute-in-place of high degree of comfort.
Although the above-mentioned type of enumerating common terminal of applicant, the impossible exhaustive all sensors of applicant, switch, controller for those skilled in the art, so long as meet the described terminal type of the present invention's spirit, are all contained by the present invention.
After by the CAN bus terminal signaling being transferred to the CAN terminal node that is used to control, it exports control signal, comprises by PWM or other signal controlling MOSFET pipe, controllable silicon, IGBT etc. realizing electric machine speed regulation, one or more during the light light and shade is regulated; Or by the control of switching signal being realized in electromagnetic valve switch, alarm start and stop, electromagnetic relay switch, the signal receiver start and stop one or more.
On the basis of the above, intelligent control network based on field bus technique of the present invention, the CAN controller is connected with host computer, controller is connected the signal transmission that realizes intelligent control network and host computer with host computer by USB interface or other interface, thereby realizes that host computer is by the real-time operation to each node of intelligent control network of visual software window realization.
Further, intelligent control network based on field bus technique of the present invention can be realized mutual with external network by host computer, by communicating by letter between host computer and the external network, and then reach each node of remote control system and real time inspection supervisory system information and the method by Script Programming realizes the purpose of control automatically.With the connected mode of external network can be that mode by the internet is connected, and can also be that the mode by mobile communications network connects.To those skilled in the art, concrete internet type and mobile communications network type are not restricted, described internet can be based on the cable network of copper cash transmission, can also be the cable network by Optical Fiber Transmission, can also be the cable network by line of electric force or television signal line transmission; Described mobile communications network comprises 3G, the 4G evolution version of GSM network, cdma network and GSM network, cdma network.
In order to realize short-distance wireless communication between the CAN node, strengthened the scope of application of total system, intelligent control network based on field bus technique of the present invention can also further connect the Zigbee wireless network by being provided with, and described Zigbee wireless network comprises Zigbee network interface that is connected on the CAN bus and the Zigbee terminal that is connected with Zigbee network excuse.
In order to realize the universal equipment remote control, the intelligent control network based on field bus technique of the present invention is connectionist learning type infrared remote control further, thereby makes that applicable surface of the present invention is big, and is easy to use and reliable.
Further,, the invention also discloses a kind of industry spot and household automation intelligence control method, comprise the steps: according to above-mentioned intelligent control network based on field bus technique
(1) the CAN terminal node receives the signal of multiple terminal, and described multiple terminal comprises sensor, switch, controller;
(2) the CAN controller is given other CAN terminal node with the signal that is received by the communication of CAN bus protocol by the CAN terminal node of CAN transceiver performing step (1) and communicating by letter of bus;
(3) step (2) CAN terminal node is realized electric machine speed regulation by exporting PWM or other signal controlling MOSFET pipe, controllable silicon, IGBT etc., one or more during the light light and shade is regulated; Or by the control of switching signal being realized one or more or the switching signal in electromagnetic valve switch, alarm start and stop, electromagnetic relay switch, the signal receiver start and stop.
Compared with prior art, the present invention has following remarkable technical advantage:
(1) realizes that by making up CAN bus communication and upper-layer protocol the signal between each node and the master controller transmits and control, reaches reliable and stable, the purpose that antijamming capability is strong;
(2) reduce cost by using the MCU of integrated CAN controller, reaching, reduce power consumption, improve reliability, reduce the purpose of individual node volume;
(3) host computer and external network are realized the remote automation operation alternately by using mobile communications network and master control PC;
(4) terminal node carries out the motor speed adjusting and reaches stepless time adjustment, the purpose of safe operation by realizing outputs such as PWM or other signal controlling MOSFET pipe, controllable silicon, IGBT;
(5) by using electromagnetic relay, realize the switch reliable turn-off, the effect that thermal value is low;
(6) realized real-time carry recognition function by node and bus negotiation mechanism.
Description of drawings
Accompanying drawing 1 is the structural representation of CN201020219542.5;
Accompanying drawing 2 is the structural representation of CN200720139203.4;
Accompanying drawing 3 is the structural representation of CN01246833.9;
Accompanying drawing 4 is the intelligent control network structural representation based on field bus technique of the present invention;
Accompanying drawing 5 is the intelligent control network structural representation based on field bus technique of the present invention;
The accompanying drawing 6 intelligent control network structural representations based on field bus technique of the present invention are connected with the Zigbee wireless network;
Accompanying drawing 7 is the intelligent control network structural representation based on field bus technique of the present invention, is connected with learning type infrared remote control;
Embodiment
Below in conjunction with accompanying drawing the present invention is further explained:
Shown in accompanying drawing 4, accompanying drawing 5, the intelligent control network based on field bus technique disclosed by the invention comprises CAN controller and CAN terminal node, adopts the CAN bus protocol to carry out communication between the CAN terminal node.Adopt the CAN bus protocol to carry out communication between CAN controller and the CAN terminal node.The CAN terminal node is from other terminal received signal, and dissection process becomes corresponding data to give the control of other CAN terminal node realization to terminal device by the communication of CAN bus protocol.Further, intelligent control network based on field bus technique of the present invention passes through internodal identification of upper-layer protocol standard and priority on the basis of CAN bus protocol, realize information communication between node, and realize the real-time carry of system node by the mode of consulting with exchange, finish the formulation of system's baud rate.
After by the CAN bus terminal signaling being transferred to the CAN terminal node that is used to control, it exports control signal, comprises by PWM or other signal controlling MOSFET pipe, controllable silicon, IGBT realizing electric machine speed regulation, one or more during the light light and shade is regulated; Or by the control of switching signal being realized in electromagnetic valve switch, alarm start and stop, electromagnetic relay switch, the signal receiver start and stop one or more.
On the basis of the above, intelligent control network based on field bus technique of the present invention, its controller is connected with host computer, controller is connected the signal transmission that realizes intelligent control network and host computer with host computer by USB interface or other interface, thereby realizes that host computer is by the real-time operation to each node of intelligent control network of visual software window realization.
Further, intelligent control network based on field bus technique of the present invention can be realized mutual with external network by host computer, by communicating by letter between host computer and the external network, and then reach the purpose of each node of remote control system and real time inspection supervisory system information.With the connected mode of external network can be that mode by the internet is connected, and can also be that the mode by mobile communications network connects.To those skilled in the art, concrete internet type and mobile communications network type are not restricted, described internet can be based on the cable network of copper cash transmission, can also be the cable network by Optical Fiber Transmission, can also be the cable network by line of electric force or television signal line transmission; Described mobile communications network comprises 3G, the 4G evolution version of GSM network, cdma network and GSM network, cdma network.
Structure shown in the accompanying drawing 6 on the basis of accompanying drawing 5, further is connected with connection Zigbee wireless network, and described Zigbee wireless network comprises Zigbee network interface that is connected on the CAN bus and the Zigbee terminal that is connected with the Zigbee network interface.
Structure shown in the accompanying drawing 7 on the basis of accompanying drawing 5, further is connected with learning type infrared remote control.
Claims (10)
1. based on the intelligent control network of field bus technique, comprise CAN controller and CAN terminal node, it is characterized in that adopting between the described CAN terminal node CAN bus protocol to carry out communication, adopt the CAN bus protocol to carry out communication between described CAN controller and the CAN terminal node.
2. the intelligent control network based on field bus technique according to claim 1 is characterized in that described CAN controller is integrated in MCU inside, and described CAN controller is realized communicating by letter of CAN terminal node and bus by the CAN transponder chip.
3. the intelligent control network based on field bus technique according to claim 1, it is characterized in that described CAN terminal node is connected with A/D modular converter and digital control module, the signal of realizing multiple terminal receives and control, and dissection process becomes corresponding data to give other CAN terminal node by the communication of CAN bus protocol; Described multiple terminal comprises sensor, switch, controller.
4. the intelligent control network based on field bus technique according to claim 3 is characterized in that described sensor comprises in infrared sensor, pressure transducer, humidity sensor, the temperature sensor one or more being arranged; Described switch comprises one or more in mechanical switch, touch key-press, touch draw runner, the touch roller; Described controller comprises one or more in speed governing, pressure regulation, frequency modulation, temperature control, acoustic control, light-operated, the infrared remote control.
5. the intelligent control network based on field bus technique according to claim 1, it is characterized in that described CAN terminal node output control signal, comprise by PWM or other signal controlling MOSFET pipe, controllable silicon, IGBT and realize electric machine speed regulation, one or more during the light light and shade is regulated; Or by the control of switching signal being realized in electromagnetic valve switch, alarm start and stop, electromagnetic relay switch, the signal receiver start and stop one or more.
6. the intelligent control network based on field bus technique according to claim 1, the CAN controller is connected with host computer, it is characterized in that described CAN controller connects host computer by USB interface or serial ports, realize the signal transmission of intelligent control network and host computer, host computer is realized real-time operation to each node of intelligent control network by software.
7. the intelligent control network based on field bus technique according to claim 6, also be connected with external network, be used for long-range the check real-time monitor message of described intelligent control network and the operation of the described intelligent control network of control, it is characterized in that described intelligent control network is connected with the mode of external network by internet or mobile communications network, described mobile communications network comprises 3G, the 4G evolution version of GSM network, cdma network and GSM network, cdma network.
8. the intelligent control network based on field bus technique according to claim 1 also comprises by the Zigbee wireless network communication and realizes radio communication between the CAN node, strengthens the scope of application of intelligent control network; Described Zigbee wireless network comprises Zigbee network interface that is connected on the CAN bus and the Zigbee terminal that is connected with the Zigbee network interface.
9. the intelligent control network based on field bus technique according to claim 1 also comprises being connected with learning type infrared remote control.
10. industry spot and household automation intelligence control method comprise the steps:
(1) the CAN terminal node receives the signal of multiple terminal, and described multiple terminal comprises sensor, switch, controller;
(2) the CAN controller is given other CAN terminal node with the signal that is received by the communication of CAN bus protocol by the CAN terminal node of CAN transceiver performing step (1) and communicating by letter of bus;
(3) step (2) CAN terminal node is realized electric machine speed regulation by output PWM or other signal controlling MOSFET pipe, controllable silicon, IGBT, one or more in the adjusting of light light and shade; Or by switching signal or other configuration information are controlled realizing one or more equipment in electromagnetic valve, alarm, electromagnetic relay, the signal receiver.
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| CN103645702A (en) * | 2013-12-03 | 2014-03-19 | 大连大学 | Embedded integrated remote monitoring device |
| CN104578396A (en) * | 2013-10-22 | 2015-04-29 | 丹阳市中远车灯有限公司 | Security relay system |
| CN104881004A (en) * | 2015-03-26 | 2015-09-02 | 杭州电子科技大学 | Electric power online monitoring equipment based on CAN bus |
| CN105357822A (en) * | 2015-11-11 | 2016-02-24 | 浙江中控研究院有限公司 | Intelligent home control system and control method thereof |
| CN105435616A (en) * | 2015-11-07 | 2016-03-30 | 常州大学 | Spray and semi-dry desulfurization facility monitoring terminal |
| CN107896174A (en) * | 2017-11-28 | 2018-04-10 | 深圳市瑞意博科技股份有限公司 | A kind of intelligent medicine-chest master controller and its control method |
| CN107966929A (en) * | 2017-11-22 | 2018-04-27 | 杭州高品自动化设备有限公司 | A kind of control method of host computer |
| CN110132500A (en) * | 2019-04-23 | 2019-08-16 | 上海海事大学 | One kind being based on can bus floor heating pipeline leak point positioning device and method |
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