CN102393665A - Profibus filed bus type electric actuating mechanism controller - Google Patents
Profibus filed bus type electric actuating mechanism controller Download PDFInfo
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- CN102393665A CN102393665A CN201110373623XA CN201110373623A CN102393665A CN 102393665 A CN102393665 A CN 102393665A CN 201110373623X A CN201110373623X A CN 201110373623XA CN 201110373623 A CN201110373623 A CN 201110373623A CN 102393665 A CN102393665 A CN 102393665A
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Abstract
The invention discloses a profibus filed bus type electric actuating mechanism controller. The controller comprises: a power supply conversion unit, which is used for conversion between an external alternating current power supply and a system power supply; a power supply management unit, which is used for switching of power supply modes and charging management of a backup battery; a signal processing unit, which is used for collection and output of information; a power control unit, which uses a three-phase motor positive and reverse rotation controller as a main part and is used for driving the mechanism to make motions; a central processing unit, which is connected with the power supply conversion unit, a power management unit, a signal processing unit, and a power processing unit and is used for managing various control signals; a redundant Profibus communication interface, which is used for make communication with an upper-level monitoring system; a serial port and a port; besides, the serial port and the port are used for uploading and downloading of debugging information. According to the invention, the above-mentioned design scheme enables reliability and availability of an electric actuating mechanism based on a Profibus bus protocol to be substantially improved.
Description
Technical field
Electric operator can be widely used in the production run of industrial sectors such as metallurgy, oil, power station, chemical industry, light textile to be regulated automatically.The invention belongs to the industrial control network technical field, relate in particular to a kind of field bus type digitizing electric operator.
Background technology
Electric operator is one of automatic field three big main instrument, and the production run that is widely used in industries such as electric power, metallurgy, petrochemical industry is regulated automatically.Along with the application at industrial control field of fieldbus and EPA, networking, total linearize, intellectuality becomes with the electric operator is the development trend of the instrument and meter for automation of representative.Controller for electric actuating mechanism is the core ingredient of electric operator, accomplishes each item control function of electric operator.Because the field bus protocol kind is more; The electric operator of main field bus protocol stipulations has also appearred supporting on the market; Support the Modbus agreement like ZL200720043659.0 disclosed " based on the LD intelligent electric actuating mechanism of Modbus field bus protocol "; ZL200520130603.X disclosed " intelligent bus type electric operator " supports the Profibus-DP agreement; ZL200620091945 " LonWorks bus type intelligent electric operator " supports the LonWorks agreement; ZL200520130603.X disclosed " intelligent bus type electric operator " supports the Profibus-DP agreement, and ZL200420070325 " CAN bus type intelligent YE control device " supports the CAN bus.Profibus is a kind of open standard agreement, has especially obtained widespread use in power industry, but is based on the importance consideration of industries such as electric power, and the redundant electric operator based on the Profibus agreement of development support slave station has very big realistic meaning.
Controller for electric actuating mechanism is the core ingredient of electric operator, accomplishes each item control function of electric operator, thereby realizes the control of electric operator to valve, gate, air door and associated fluid equipment.
Through to publication analysis, there is the defective of following several respects in related patent U.S. Patent No.:
1) integrated circuit of forming through contactor and controllable silicon is realized the rotating switching of motor and is regulated; In practical application, find; The electromagnetic field that the folding excessive velocities of contactor produces can produce silicon controlled control and disturb, and the sound of contactor is also excessive, has noise;
2) not enough to the consideration of backup battery and management circuit;
3) realize that through serial ports Debugging message uploads download, the interface and the connecting line of debug terminal had certain requirement, convenience is poor.
Summary of the invention
In order to overcome the above problem that prior art exists, the application proposes a kind of Profibus field bus type controller for electric actuating mechanism design proposal, improves the practicality and the security of Related product.
The following technical scheme of the concrete employing of the present invention.
A kind of Profibus field bus type controller for electric actuating mechanism comprises power conversion unit, PMU, CPU, signal processing unit and power control unit; It is characterized in that:
The external 380V AC power of said power conversion unit input end, output 24V direct current and two groups of power supplys of 5V direct current are respectively the power supply of CPU and signal processing unit;
PMU is used to accomplish the switching in power supply mode under the situation that has or not the external power supply input: when the power conversion unit input end has external 380V AC power; Said PMU is controlled said power conversion unit and is output as CPU and signal processing unit power supply, and through the charging circuit in the said power-supply management system backup battery is charged; When the power conversion unit input end does not have external 380V AC power, through the switching controls of said PMU, by said backup battery to CPU and signal processing unit power supply;
Analog quantity input signals such as valve position signal that said signal processing unit receiving position sensor sends and motor three-phase current, motor coil temperature, backup battery temperature, and the long-range on the spot switching signal that sends of local operation button;
The output terminal of said signal processing unit links to each other with the input end of LCD interface and CPU respectively; Export the various signals that collect to LCD interface and CPU; Accomplish the demonstration of human-computer interaction interface and check by LCD interface; Said various signals are handled according to set control strategy and protection logic by CPU, generated corresponding motor control signal and protection actuating signal;
Said CPU links to each other with the communication interface card of upper strata control system through redundant PROFIBUS interface; Be used to receive the upper strata control system open and close, stop or valve opening instruction other signal that receives to the actual valve position signal of upper strata control system feedback and signal processing unit simultaneously; Debug terminal is realized the modification of Debugging message through network interface integrated on the CPU or serial ports and is uploaded, downloads;
Said CPU links to each other with power control unit, exports said Motor Control signal to power control unit, drives asynchronous three phase electric machine action, realizes the control to electric operator.
The positional information of " opening " that CPU transmits redundant PROFIBUS interface, " pass ", " stopping " or valve position action command and signal processing unit collection compares computing, exports the SCR control signal to power control unit according to the deviation of the two.
Said power control unit is made up of SCR control circuit and three phase electric machine positive and negative rotating controller; Link to each other with threephase asynchronous machine; The SCR control signal that sends according to CPU realize threephase asynchronous machine just commentaries on classics, reverse and stop, thereby realize the valve position control of topworks.
Redundant PROFIBUS interface adopts the hardware redundancy mode, and data are sent by the same CPU of CPU, and see off through two VPC3+ chips; Two VPC3+ work simultaneously; And through the data bus swap data of CPU, every VPC3+ is through the watch dog monitoring program run between the electric operator body, in case wherein a VPC3+ chip damages; Other one tunnel operate as normal, system still can keep operate as normal.
The present invention has following beneficial effect:
1) improves power control unit, used the rotating and adjusting continuously of three phase electric machine positive and negative rotating controller control motor, thereby realize noiseless control, reduced noise;
2) in PMU, add microswitch; Connecting microswitch after manually rocking handle pushes on the spot is battery charge, after rocking handle ejects, breaks off microswitch; Thereby under the prerequisite of preserving real time data, realize thoroughly outage; Reduce the not guilty loss of battery, thereby dwindle the capacity and the volume of battery, simplify the operation;
3) redundant PROFIBUS interface has improved the reliability of electric operator, and the user can freely select to debug through Ethernet interface or serial ports, and is convenient more flexibly.
Description of drawings
Fig. 1 is a Profibus field bus type controller for electric actuating mechanism structured flowchart;
Fig. 2 is a Profibus field bus type controller for electric actuating mechanism power control unit circuit structure diagram;
Fig. 3 is a Profibus field bus type controller for electric actuating mechanism PMU principle of work synoptic diagram.
Embodiment
Below according to Figure of description, in conjunction with the preferred embodiments to the technical scheme further explain.
As shown in Figure 1, Profibus field bus type controller for electric actuating mechanism mainly comprises power conversion unit, PMU, CPU, signal processing unit and five parts of power control unit.
Power conversion unit converts the 380VAC of input into 24VDC, two groups of power supplys of 5VDC, and respectively signal processing unit and CPU is supplied power through PMU; PMU is mainly accomplished the switching of power supply mode under the situation that has or not the external power supply input; And charging circuit is provided, backup battery is charged having under the situation of power supply, under topworks's power-down conditions; On the spot during manual operation; Connect microswitch, the real-time detection of completing place is supplied power in CPU, signal processing unit and motor speed pulse and direction detection module by backup battery.
Power conversion unit converts the 380VAC of input into 24VDC, two groups of power supplys of 5VDC, and respectively signal processing unit and CPU is supplied power through PMU; PMU is mainly accomplished the switching of power supply mode under the situation that has or not the external power supply input; And charging circuit is provided, backup battery is charged having under the situation of power supply, under topworks's power-down conditions; On the spot during manual operation; Connect microswitch, to CPU, signal processing unit power supply, accomplish the real-time detection and the storage of current valve location (being umber of pulse) and direction by backup battery.
The valve position signal that signal processing unit receiving position sensor sends, the long-range on the spot switching signal that analog quantity input signal, local operation buttons such as motor three-phase current, motor coil temperature, backup battery temperature send.Position transducer adopts the Hall non-contacting sensor in the present embodiment.
The output terminal of signal processing unit links to each other with the input end of LCD interface and CPU respectively; Export the positional information that collects, status information to LCD interface and CPU; Accomplish the demonstration of human-computer interaction interface and check by LCD interface; Handle according to set control strategy and protection logic by CPU, as starting protection etc. according to heat protection alerting signal.
CPU links to each other with the communication in monitoring system card through redundant PROFIBUS interface, is used to receive the instruction of upper strata control system, simultaneously to upper strata control system feedback topworks status information; Debug terminal is realized the modification of Debugging message through network interface integrated on the CPU or serial ports and is uploaded, downloads.
CPU links to each other with power control module, to power control module output motor control signal.Detailed process is: the positional information of " opening " that CPU transmits redundant PROFIBUS interface, " pass ", " stopping " or valve position action command and signal processing unit collection compares computing; Export the SCR control signal to power control module according to the deviation of the two, and then drive the threephase asynchronous machine action.
Redundant PROFIBUS interface adopts the hardware redundancy mode, and data are sent by the same CPU of CPU, and see off through two VPC3+ chips; Two VPC3+ work simultaneously; And through the data bus swap data of CPU, every VPC3+ is through the watch dog monitoring program run between the electric operator body, in case wherein a VPC3+ chip damages; Other one tunnel operate as normal, system still can keep operate as normal.The VPC3+ that adopts in the present embodiment is a kind of PROFIBUS special-purpose asic chip of communicating by letter, and can be operated under the 12Mbit/s.
As shown in Figure 2, power control unit is made up of three phase electric machine positive and negative rotating controller and Group of Silicon Controlled Rectifier, and the three phase electric machine positive and negative rotating controller is realized the stepless control of motor forward and backward, and Group of Silicon Controlled Rectifier realizes the crawl control of motor.The three phase electric machine positive and negative rotating controller is built-in two groups of controllable silicons, when controller is applied in positive rotaring signal, controllable silicon U1, V1, W1 conducting, controllable silicon U2, W2 end, thus the positive rotaring signal of output motor; When controller is applied in reverse signal, controllable silicon U2, V1, W2 conducting, controllable silicon U1, W1 end, thus the output motor reverse signal.The three phase electric machine positive and negative rotating controller model that adopts in the present embodiment is LSF-T4Z90DD2,, inside is the high triple interlocking designs of reliability, antijamming capability is strong.Connect earlier 24Vdc module working power input end during use, connect OPEN+ as required then, OPEN-just changes motor, or connect CLOSE+, CLOSE-makes the motor counter-rotating.
Shown in Figure 3 is the signal of Profibus field bus type controller for electric actuating mechanism PMU principle of work.Power control unit is accomplished the switching of electricity commonly used and subsequent use electricity.Under topworks's power-down state; Take manual operation on the spot, connect microswitch, power control unit, microswitch and backup battery form discharge path; By subsequent use electricity is topworks's power supply, thereby guarantees that CPU has time enough to carry out the real-time running data storage.
The embodiment that more than provides is in order to explanation the present invention and its practical application; Be not that the present invention is done any pro forma restriction; Any one professional and technical personnel is in the scope that does not depart from technical scheme of the present invention, and above technology of foundation and method do certain modification and the equivalent embodiment that is regarded as equivalent variations is worked as in change.
Claims (3)
1. a Profibus field bus type controller for electric actuating mechanism comprises power conversion unit, PMU, CPU, signal processing unit and power control unit; It is characterized in that:
The external 380V AC power of said power conversion unit input end, output 24V direct current and two groups of power supplys of 5V direct current are respectively the power supply of CPU and signal processing unit;
PMU is used to accomplish the switching in power supply mode under the situation that has or not the external power supply input: when the power conversion unit input end has external 380V AC power; Said PMU is controlled said power conversion unit and is output as CPU and signal processing unit power supply, and through the charging circuit in the said power-supply management system backup battery is charged; When the power conversion unit input end does not have external 380V AC power, through manual operation, connect the microswitch that connects said PMU and backup battery, by said backup battery CPU and signal processing unit are supplied power;
The valve position signal that said signal processing unit receiving position sensor sends; With analog quantity input signals such as motor three-phase current, motor coil temperature, backup battery temperature, heat protection alerting signal, and the long-range on the spot switching signal that sends of local operation button;
The output terminal of said signal processing unit links to each other with the input end of LCD interface and CPU respectively; Export the various signals that collect to LCD interface and CPU; Accomplish the demonstration of human-computer interaction interface and check by LCD interface; Said various signals are handled according to set control strategy and protection logic by CPU, generated corresponding motor control signal and protection actuating signal;
Said CPU links to each other with the communication interface card of upper strata control system through redundant PROFIBUS interface; Be used to receive the upper strata control system open and close, stop or valve opening instruction other signal that receives to the actual valve position signal of upper strata control system feedback and signal processing unit simultaneously; Debug terminal is realized the modification of Debugging message through network interface integrated on the CPU or serial ports and is uploaded, downloads;
Said CPU links to each other with power control unit, exports said Motor Control signal to power control unit, drives asynchronous three phase electric machine action, realizes the control to electric operator.
2. Profibus field bus type controller for electric actuating mechanism according to claim 1; It is characterized in that: said power control unit is made up of SCR control circuit and three phase electric machine positive and negative rotating controller; Link to each other with threephase asynchronous machine; The SCR control signal that sends according to CPU realize threephase asynchronous machine just commentaries on classics, reverse and stop, thereby realize the valve position control of topworks.
3. Profibus field bus type controller for electric actuating mechanism according to claim 1; It is characterized in that: said redundant PROFIBUS interface adopts the hardware redundancy mode, and data are sent by the same CPU of CPU, and see off through two VPC3+ chips; Two VPC3+ work simultaneously; And through the data bus swap data of CPU, every VPC3+ is through the watch dog monitoring program run between the electric operator body, in case wherein a VPC3+ chip damages; Other one tunnel operate as normal can keep said controller for electric actuating mechanism operate as normal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110373623 CN102393665B (en) | 2011-11-22 | 2011-11-22 | Profibus filed bus type electric actuating mechanism controller |
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| CN 201110373623 CN102393665B (en) | 2011-11-22 | 2011-11-22 | Profibus filed bus type electric actuating mechanism controller |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977881A (en) * | 2015-06-18 | 2015-10-14 | 陕西法士特齿轮有限责任公司 | Actuator controller based on communication bus and control method |
| CN105425738A (en) * | 2014-09-12 | 2016-03-23 | 费希尔-罗斯蒙特***公司 | Methods and apparatuses to communicatively couple on/off valves to controllers in a process control systam |
| CN109613875A (en) * | 2019-01-24 | 2019-04-12 | 上海思岚科技有限公司 | A kind of robot chassis control system |
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| CN201422090Y (en) * | 2009-05-26 | 2010-03-10 | 太原惠特科技有限公司 | Soft starter with PROFIBUS-DP communication function |
| CN101706654A (en) * | 2009-11-19 | 2010-05-12 | 北京华电天仁电力控制科技有限公司 | Digitized controller for electric actuating mechanism |
| CN201656556U (en) * | 2009-11-02 | 2010-11-24 | 国电南京自动化股份有限公司 | 400V low-voltage protection measurement and control device based on double Profibus-DP bus interfaces |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201422090Y (en) * | 2009-05-26 | 2010-03-10 | 太原惠特科技有限公司 | Soft starter with PROFIBUS-DP communication function |
| CN201656556U (en) * | 2009-11-02 | 2010-11-24 | 国电南京自动化股份有限公司 | 400V low-voltage protection measurement and control device based on double Profibus-DP bus interfaces |
| CN101706654A (en) * | 2009-11-19 | 2010-05-12 | 北京华电天仁电力控制科技有限公司 | Digitized controller for electric actuating mechanism |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425738A (en) * | 2014-09-12 | 2016-03-23 | 费希尔-罗斯蒙特***公司 | Methods and apparatuses to communicatively couple on/off valves to controllers in a process control systam |
| US10725442B2 (en) | 2014-09-12 | 2020-07-28 | Fisher-Rosemount Systems, Inc. | Methods and apparatus to communicatively couple on/off valves to controllers in a process control system |
| CN104977881A (en) * | 2015-06-18 | 2015-10-14 | 陕西法士特齿轮有限责任公司 | Actuator controller based on communication bus and control method |
| CN109613875A (en) * | 2019-01-24 | 2019-04-12 | 上海思岚科技有限公司 | A kind of robot chassis control system |
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