CN102393665B - Profibus filed bus type electric actuating mechanism controller - Google Patents
Profibus filed bus type electric actuating mechanism controller Download PDFInfo
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- CN102393665B CN102393665B CN 201110373623 CN201110373623A CN102393665B CN 102393665 B CN102393665 B CN 102393665B CN 201110373623 CN201110373623 CN 201110373623 CN 201110373623 A CN201110373623 A CN 201110373623A CN 102393665 B CN102393665 B CN 102393665B
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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 Industrial Ethernet, 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, finishes every 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 as 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 electric actuator 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 electric operator based on the Profibus agreement of development support slave station redundancy has very big realistic meaning.
Controller for electric actuating mechanism is the core ingredient of electric operator, finishes every control function of electric operator, thereby realizes the control of electric operator to valve, gate, air door and associated fluid equipment.
By to publication analysis, there is the defective of following several respects in relevant patent:
1) integrated circuit of forming by contactor and controllable silicon is realized the rotating switching of motor and is regulated, find in actual applications, 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) to the consideration deficiency of backup battery and management circuit;
3) realize that by 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 present invention specifically by the following technical solutions.
A kind of Profibus field bus type controller for electric actuating mechanism comprises power conversion unit, Power Management Unit, CPU (central processing unit), signal processing unit and power control unit; It is characterized in that:
The external 380V AC power of described 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 (central processing unit) and signal processing unit;
Power Management Unit is used to finish 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, described Power Management Unit is controlled described power conversion unit and is output as CPU (central processing unit) and signal processing unit power supply, and by the charging circuit in the described power-supply management system backup battery is charged; When the power conversion unit input end does not have external 380V AC power, by the switching controls of described Power Management Unit, by described backup battery to CPU (central processing unit) and signal processing unit power supply;
Analog quantity input signals such as valve position signal that described 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 described signal processing unit links to each other with the input end of LCD interface and CPU (central processing unit) respectively, export the various signals that collect to LCD interface and CPU (central processing unit), finish the demonstration of human-computer interaction interface and check by LCD interface, described various signals are handled according to set control strategy and protection logic by CPU (central processing unit), generated corresponding motor control signal and protection actuating signal;
Described CPU (central processing unit) links to each other with the communication interface card of upper strata control system by 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 by network interface integrated on the CPU (central processing unit) or serial ports and is uploaded, downloads;
Described CPU (central processing unit) links to each other with power control unit, exports described 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 (central processing unit) 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.
Described 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 (central processing unit) 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, data are sent by the same CPU of CPU (central processing unit), and send by two VPC3+ chips, two VPC3+ work simultaneously, and by the data bus swap data of CPU (central processing unit), every VPC3+ is by 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 the adjusting continuously of three phase electric machine positive and negative rotating controller control motor, thereby realize noiseless control, reduced noise;
2) in Power Management Unit, add microswitch, connecting microswitch after manually rocking handle pushes on the spot is battery charge; after rocking handle ejects; disconnect microswitch; thus thoroughly outage of realization under the prerequisite of preserving real time data; 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 by 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 Power Management Unit principle of work synoptic diagram.
Embodiment
According to Figure of description, in conjunction with the preferred embodiments technical scheme is further described below.
As shown in Figure 1, Profibus field bus type controller for electric actuating mechanism mainly comprises power conversion unit, Power Management Unit, CPU (central processing unit), signal processing unit and five parts of power control unit.
Power conversion unit is converted to two groups of power supplys of 24VDC, 5VDC with the 380VAC of input, and respectively signal processing unit and CPU (central processing unit) is powered by Power Management Unit; Power Management Unit is mainly finished the switching of power supply mode under the situation that has or not the external power supply input, and provide charging circuit, 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 powered in CPU (central processing unit), signal processing unit and motor speed pulse and direction detection module by backup battery.
Power conversion unit is converted to two groups of power supplys of 24VDC, 5VDC with the 380VAC of input, and respectively signal processing unit and CPU (central processing unit) is powered by Power Management Unit; Power Management Unit is mainly finished the switching of power supply mode under the situation that has or not the external power supply input, and provide charging circuit, 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 (central processing unit), signal processing unit power supply, finish 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 (central processing unit) respectively; export the positional information, the status information that collect to LCD interface and CPU (central processing unit); finish the demonstration of human-computer interaction interface and check by LCD interface; handle according to set control strategy and protection logic by CPU (central processing unit), as starting protection etc. according to heat protection alerting signal.
CPU (central processing unit) links to each other with the communication in monitoring system card by 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 by network interface integrated on the CPU (central processing unit) or serial ports and is uploaded, downloads.
CPU (central processing unit) 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 (central processing unit) 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, data are sent by the same CPU of CPU (central processing unit), and send by two VPC3+ chips, two VPC3+ work simultaneously, and by the data bus swap data of CPU (central processing unit), every VPC3+ is by 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 of Cai Yonging is LSF-T4Z90DD2 in the present embodiment,, inside is the high triple interlocking designs of reliability, antijamming capability is strong.Connect 24Vdc module working power input end during use earlier, connect OPEN+, OPEN-then as required motor is just changeed, or connection CLOSE+, CLOSE-make the motor counter-rotating.
Shown in Figure 3 is the signal of Profibus field bus type controller for electric actuating mechanism Power Management Unit principle of work.Power control unit is finished the switching of electricity commonly used and standby 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 standby electricity is topworks's power supply, thereby guarantees that CPU (central processing unit) 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 solution of the present invention, and above technology of foundation and method do certain modification and the equivalent embodiment that is considered 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, Power Management Unit, CPU (central processing unit), signal processing unit and power control unit; It is characterized in that:
The external 380V AC power of described 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 (central processing unit) and signal processing unit;
Power Management Unit is used to finish 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, described Power Management Unit is controlled described power conversion unit and is output as CPU (central processing unit) and signal processing unit power supply, and by the charging circuit in the described Power Management Unit backup battery is charged; When the power conversion unit input end does not have external 380V AC power, by manual operation, connect the microswitch that connects described Power Management Unit and backup battery, by described backup battery to CPU (central processing unit) and signal processing unit power supply;
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 backup battery is topworks's power supply, thereby guarantees that CPU (central processing unit) has time enough to carry out the real-time running data storage;
The valve position signal that described signal processing unit receiving position sensor sends, with motor three-phase current, motor coil temperature, backup battery temperature simulation amount input signal, heat protection alerting signal, and the long-range on the spot switching signal that sends of local operation button;
The output terminal of described signal processing unit links to each other with the input end of LCD interface and CPU (central processing unit) respectively, export the various signals that collect to LCD interface and CPU (central processing unit), finish the demonstration of human-computer interaction interface and check by LCD interface, described various signals are handled according to set control strategy and protection logic by CPU (central processing unit), generated corresponding motor control signal and protection actuating signal;
Described CPU (central processing unit) links to each other with the communication interface card of upper strata control system by 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 by network interface integrated on the CPU (central processing unit) or serial ports and is uploaded, downloads;
Described CPU (central processing unit) links to each other with power control unit, to power control unit output motor control signal, drives asynchronous three phase electric machine action, realizes the control to electric operator;
Wherein, described 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 three phase electric machine positive and negative rotating controller is built-in two groups of controllable silicons, first group of controllable silicon (U1, V1, W1) comprise first controllable silicon (U1), second controllable silicon (V1), the 3rd controllable silicon (W1) is serially connected in respectively on the three-phase power line of three phase electric machine, second group of controllable silicon (U2, W2) comprise the 4th controllable silicon (U2), the 5th controllable silicon (W2), the head end of the 4th controllable silicon (U2) is connected to the head end of first controllable silicon (U1), the tail end of the 4th controllable silicon (U2) is connected to the tail end of the 3rd controllable silicon (W1), the head end of the 5th controllable silicon (W2) is connected to the head end of the 3rd controllable silicon (W1), and the tail end of the 5th controllable silicon (W2) is connected to the tail end of first controllable silicon (U1); When controller is applied in positive rotaring signal, first group of controllable silicon (U1, V1, W1) conducting, second group of controllable silicon (U2, W2) ends, thus the positive rotaring signal of output motor; When controller is applied in reverse signal, the 4th controllable silicon (U2), second controllable silicon (V1), the 5th controllable silicon (W2) conducting, first controllable silicon (U1), the 3rd controllable silicon (W1) end, thus the output motor reverse signal.
2. Profibus field bus type controller for electric actuating mechanism according to claim 1, it is characterized in that: the SCR control signal that described power control unit sends according to CPU (central processing unit) 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: described redundant PROFIBUS interface adopts the hardware redundancy mode, data are sent by the same CPU of CPU (central processing unit), and send by two VPC3+ chips, two VPC3+ work simultaneously, and pass through the data bus swap data of CPU (central processing unit) between the electric operator body, every VPC3+ is by the watch dog monitoring program run, in case wherein a VPC3+ chip damages, other one tunnel operate as normal can keep described controller for electric actuating mechanism operate as normal.
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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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| 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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| 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 |
|---|---|---|---|---|
| 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 |
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