CN102608957A - Industrial network type two-stage combined control system and method - Google Patents
Industrial network type two-stage combined control system and method Download PDFInfo
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- CN102608957A CN102608957A CN2011100979742A CN201110097974A CN102608957A CN 102608957 A CN102608957 A CN 102608957A CN 2011100979742 A CN2011100979742 A CN 2011100979742A CN 201110097974 A CN201110097974 A CN 201110097974A CN 102608957 A CN102608957 A CN 102608957A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The invention discloses an industrial network type two-stage combined control system and method. The whole control system connects a long-distance centralized control center and a plurality of field control units through an MODIBUS, wherein the long-distance centralized control center is used for simultaneously monitoring and controlling the field control units through a field bus protocol. The method comprises a PLC (Programmable Logic Controller) automatic control method, a relay logic field manual control method and an industrial control computer instruction long-distance control method. Through adoption of the industrial network type two-stage combined control system and method, a measurement function of sensors can be enhanced and a gate inclination hidden danger caused when signal amounts of the left and right sensors are not consistent can be effectively handled, so as to operate the operation safety and the stability of a gate. Since gate sensors adopt absolute contact type axial angle encoders to measure rotating angle signals of a gate support arm, the influences such as probability to electromagnetic interference and power-failure memory loss, caused by a common encoder, are overcome. Meanwhile, a PLC input module in the system is improved, so that the input efficiency is improved and the hardware cost is reduced.
Description
Technical field
What the present invention relates to is a kind of secondary combined control system and control method that is used for reservoir, the up-down of power station hydraulic headstock gear gate, belongs to technical field of automatic control.
Background technology
Big-and-middle-sized sluice is the important building in the water-control project, in reservoirs such as water drainage, flood discharge, retaining, flow regulation, the management of power station actual motion, plays an important role.The mode that the up-down of big-and-middle-sized sluice often takes hydraulic pressure to open and close, its reason is that hydraulic headstock gear has characteristics such as volume is little, in light weight, hoisting capacity is big.Simultaneously, the in-oil cylinder fluid of hydraulic gate hoist is the flexible working medium, and high-velocity flow has the effect that realizes the gate even running to the vibration that gate produces in the time of can alleviating the unlatching of gate part.
The most basic gate opening/closing mode is to use relay logic circuit that gate is carried out the hand-operated lifting operation.This mode designs and realizes more or less freelyly, with low cost, but function singleness does not possess the automatic deviation correction function to left and right sides gate oil pump motor aperture, is only applicable to control function is required easy gate control situation.Simultaneously, relay logic circuit complex structure, electrical equipment too Pang are many, cause the difficulty of maintenance and renewal of its electrical equipment bigger.The integrated level of relay logic circuit is lower slightly, in some complicated gate control occasion, if need other purposes and the function of expansion electrical equipment, must design control circuit again, and its practicality is affected.The visual degree of the control of relay logic circuit is not high, can not give operating personnel a kind of effectively monitoring mode directly perceived.For this reason, the automatic control mode based on PLC begins to apply in the hydraulic headstock gear gate control occasion.This mode is through calling rising door, falling instructions such as door, shutdown of PLC equipment, and control PLC performance element carries out corresponding automation mechanized operation according to embedded program to gate.The conventional hydraulic headstock gear gate up-down mode based on PLC control has following defective:
(1) reservoir, gate of hydropower station generally adopt gates of segmental shape.Gates of segmental shape has the dash gate flap of circular arc, and when opening and closing gate, the gate support arm rotates around the transverse axis of fixing branch hinge, goes up and down thereby drive gate.For gates of segmental shape, the PLC automatic control equipment adopts float-type directly to measure the aperture amount of gate bottom to the top usually.This methodological function is too single, can only measure the aperture size of gate, can not obtain the gone up and down amount of correlated information of gate support arm of actual impetus of gate.When the aperture amount that causes the left and light brake door sensor to record when extraneous high-velocity flow effect or other enchancement factors is inconsistent, be difficult to effectively adjust the rotational angle of corresponding gate support arm, cause gate left and right sides oil cylinder working-pressure unbalance, gate tilts, and very easily causes accident.
(2) gate sensor commonly used has coil resistor-type scrambler, hall device type scrambler and photoelectric encoder.These sensors divide incremental and absolute type again, general under wide range the sensor price of incremental lower, but can lose whole measurement data in the past when shortcoming is power down, practicality is restricted.The sensor of absolute type price under wide range is higher.Hall device type scrambler, photoelectric encoder and coil resistance type scrambler belong to the electromagnetic type sensor, are subject to electromagnetic interference (EMI) at strong industrial noise scene, and bigger error can appear in measurement data.The sensor all is not suitable for the High Accuracy Control of gate, influences the reliability of gate opening/closing.But absolute type contact shaft-position encoder price is moderate, and its principle of work does not belong to electromagnetic type, therefore has good anti-electromagnetic interference performance.
(3) the gate automatic open close mode based on PLC control needs two load modules usually, is respectively applied for and receives left and light brake door sensor signal, handles to offer CPU element.This input structure is redundant, and efficient is on the low side, and equipment size is bigger than normal, has had more unnecessary hardware cost.
Summary of the invention
The present invention seeks to defective, designed a kind of improved bilateral balancing a survey control system of gate hydraulic headstock gear that is applicable to reservoir, power station to the hydraulic headstock gear gate control mode that adopts single relay logic and conventional PLC.This system mainly adopts PLC equipment, through industrial computer gate is controlled automatically through touch control flow or in remote centralized control center at the gate scene.The user is the real-time running state of monitoring hydraulic headstock gear and gate on observing and controlling screen or industrial computer directly, and directly imports data, click commands button above that.
The present invention adopts following technical scheme for realizing above-mentioned purpose:
Industrial network type secondary combined control system of the present invention is characterized in that having comprised remote centralized control center.Remote centralized control center monitors, controls a plurality of local control units simultaneously through the MODIBUS field bus protocol; Said local control unit comprises terrain control circuit, hydraulic headstock gear, left and light brake door motor control module and input gating switch; Wherein the output terminal of terrain control circuit connects the input end of left and light brake door motor control module and hydraulic headstock gear respectively; The output terminal of left and light brake door motor control module connects the input end of hydraulic headstock gear respectively; The input end of the output termination input gating switch of hydraulic headstock gear, the input end of the output termination terrain control circuit of input gating switch.
Said terrain control circuit comprises control relay circuit, gatage display and PLC control circuit.
Said hydraulic headstock gear comprises left and light brake door sensor and oil circuit solenoid valve.
The terrain autocontrol method based on PLC of industrial network type secondary combined control system is following: left and right sides gate jaw opening sensor signal is sent into the PLC load module and is handled.Operation power SS is used for from " the gate terrain is controlled automatically ", " a gate distant place is controlled automatically " and " the gate terrain is manually controlled " selection corresponding work mode, when selecting a kind of mode, and all the other mode automatic blockings.Push corresponding liter door, fall door or stop button, send command signal; When system produces fault, can be by fault SR reset system state.PLC is according to the embedded instructions program work; Its output signal both can show the hydraulic headstock gear gate rising, descend, stop and the oil pump malfunction; Again can be to surplus valve, gate rising solenoid valve, gate decline solenoid valve and the energising of left and right sides gate oil pump motor contactor coil, to start corresponding systemic-function; When serious problems appearred in system, the warning reminding user noted automatically, takes corresponding measure.
The terrain hand operated control method based on relay logic of industrial network type secondary combined control system is following: after the external communication electricity that is introduced into converts direct current to, be supplied to whole control relay circuit, and by automatic air-break switch control break-make; To operate the power SS and get to " terrain is manual " position, press tail gates rising button, at this moment auxiliary reclay line Bao Dedian; Gate Oil pump electrical machinery and power of electromagnetic valve indication are started simultaneously; Normally open contact is closed, and gate rising pilot lamp is lighted, and therefore time relay line bag gets; Cause contact closure, the surplus valve energising; The oil circuit pressure control valve is opened, and prevents the oil pump systems overload, keeps the oil circuit constant pressure; In a single day time relay contact breaks off, the relay coil dead electricity, and the surplus valve function stop, gate vertical relay line Bao Dedian rises a door solenoid valve function on simultaneously, and gate begins rising; In the uphill process, if press tail gates up-down stop button, control relay circuit breaks off, and gate oil pump motor function stop goes up and down to stop pilot lamp being lighted, and gate keeps stationary state.
If press tail gates decline button, auxiliary reclay line Bao Dedian, contact closure, therefore time relay line bag gets electric, and gate decline pilot lamp is lighted, and the surplus valve function is unlocked; After time relay contact broke off, surplus valve was out of service, and normally open contact is closed, falls a solenoid valve function on, and gate begins to descend; If press stop button during this period, the gate oil pump motor stops to descend, and goes up and down to stop pilot lamp being lighted.
The long-range control method based on the industrial computer instruction of industrial network type secondary combined control system is following: the industrial computer in the remote centralized control center adopts the MODIBUS agreement to set up with the PLC communication module in the local control unit and links; PLC uploads the gate running status and the aperture signal is given long-range industrial computer, and the user can independently call and rise door, fall instruction operated from a distance PLC equipment such as door or shutdown through industrial computer and realize the automatic control to the hydraulic headstock gear gate.
The present invention has following beneficial effect:
(1) native system has control function able to programme, and the user can be according to demand, through working out embedded PLC program, and expanding system function or function reconfigured at any time.System design and debugging work load are little, and be easy to maintenance, transforms easily, and practicality is very strong.
(2) the native system metering system has the balancing a survey characteristic.An angular transducer respectively is installed on the gate support arm of left and light brake door sensor, is measured the corner α of support arm
1And α
2, according to the match relation of support arm corner α and gatage H, converse gatage value H again.Matched curve is as shown in Figure 1.Fitting function is stored in the CPU element of PLC, when an outer corner measurement signal input PLC handles, will call the fitting function function automatically, and obtain the real-time aperture amount of gate at once.If left and right sides gate opening value is not for the moment, i.e. H
1≠ H
2, PLC through adjusting corresponding gate support arm corner size, reaches the Balance Control to left and right sides gatage by embedded correction program.The balancing a survey method can obtain the angle of rotation tolerance of gatage amount and gate support arm simultaneously, effectively eliminates external interference, guarantees security and stability that the hydraulic headstock gear gate goes up and down to control constantly.
(3) left and right sides gate angle signal sensor of native system all adopts absolute type contact shaft-position encoder.This type of scrambler utilizes whether contacting of metallic brush and code-disc electricity lead ring, and the output make-and-break signal has the function of angular displacement, length detection and location.This sensor has the power-failure memory function, need not to be provided with power failure holding circuit and RP, even power cut-off, because the Mechanical Contact invariant position of code-disc metallic brush, after the energized, the data of scrambler still can normally be exported once more.And absolute type encoder does not receive the influence of electromagnetic interference (EMI).Make the anti-interference of scrambler and the reliability of data improve greatly.
(4) the PLC input pattern of native system adopts the gate type data to read mode, make the left and right sides same PLC load module of gate jaw opening sensor signal common of gate hydraulic headstock gear handle.Left and right sides sensor input signal is sent into CPU element by turns by the time-division principle and is handled.The time subdivided gap conversion realize by the embedded program of PLC.This gating technique can reduce the input equipment of a PLC, improves input efficiency, reduces hardware cost.
(5) native system uses the industrial network type control mode of field control and the combination of distant place control two-stage; Promptly on the industrial computer of remote centralized control center; Through the MODIBUS field bus protocol; Link with the PLC communication module of N reservoir, power station local control unit, and PLC equipment is separately sent command signal respectively, to reach the effect of the gate hydraulic headstock gear of local control unit being carried out bilateral balancing a survey and control.Simultaneously; Consider that PLC equipment breaks down or receives other stochastic factor, cause the PLC control function to start, for guaranteeing in emergency circumstances still to open and close gate; The safe balancing reservoir water yield, the present invention has kept the manual control function based on relay logic.And will be based on the terrain manual control mode of conventional relay logic, combine based on the terrain automatic control mode of PLC with based on the Long-distance Control mode of industrial computer instruction, form a multi-functional industrial network type secondary combined control system.According to actual conditions, operate the up-down of gate hydraulic headstock gear in reservoir, gate of hydropower station field by using automatic or manual mode; And in remote centralized control center, by the automatic control function of industrial computer far call PLC, the up-down of control gate hydraulic headstock gear.The switching of operation power can be selected by the change-over switch on the electric controling screen panel, also can be by the industrial computer Instruction Selection of remote centralized control center.When selecting a kind of control mode, other mode lockings.The operation of control gate hydraulic headstock gear more reliably of this Combination Control structure.Three kinds of control modes can not have the disturbance switching, meet consumers' demand.
Description of drawings
Fig. 1 is the matched curve figure of hydraulic headstock gear gate support arm corner of the present invention and gatage.
Fig. 2 is a module general structure block diagram of the present invention.
Fig. 3 is PLC configuration circuit figure of the present invention.
Fig. 4 is a PLC gating load module circuit of the present invention.
Fig. 5 is a PLC control signal load module circuit of the present invention.
Fig. 6 is a PLC output module circuit of the present invention.
Fig. 7 is the left and right sides gate oil pump motor control circuit of the present invention's invention.
Fig. 8 is relay logic control circuit figure of the present invention.
Embodiment
Below accompanying drawing 2～8 be will combine, deployed with devices situation of the present invention and concrete method of work discussed in detail.
Module syndeton of the present invention is as shown in Figure 2.The gate scene in different reservoirs, power station is by the keying state of separately its hydraulic headstock gear gate of local control unit control, and the gate running status of a plurality of local control units then can monitored, control to long-range industrial computer simultaneously through the MODIBUS field bus protocol.
Local control unit comprises terrain control circuit, hydraulic headstock gear, left and light brake door motor control module and input gating switch.Wherein the terrain control circuit comprises PLC control circuit and control relay circuit, is respectively applied for the gate hydraulic headstock gear is done automatically and the hand-operated lifting operation.The gatage numerical signal of PLC control circuit output shows through the gatage display in real time.
Probe of contactor in the left and light brake door motor control loop is closed through the energising of the contactor coil in PLC control circuit or the control relay circuit, selects the running of left and right sides gate oil pump motor in the hydraulic headstock gear.Be provided with oil circuit solenoid valve and gate angular transducer in the hydraulic headstock gear.The oil circuit solenoid valve is used to control rising, decline and the relief function of hydraulic headstock gear gate.The gate angular transducer is measured the corner size of left and right sides gate support arm in real time, and corner numerical value is transferred to the PLC gating load module of local control unit.Industrial computer in the remote centralized control center adopts the MODIBUS agreement to set up with the PLC communication module in the local control unit and links; PLC uploads the gate running status and the aperture signal is given long-range industrial computer, and the user can call and rise door, fall instruction operated from a distance PLC equipment such as door or shutdown through industrial computer and realize the automatic control to the hydraulic headstock gear gate.
Based on the terrain automatic control mode of PLC shown in Fig. 3～6.Wherein, PLC configuration circuit figure of the present invention is as shown in Figure 3.The PLC electrical control equipment contains 6 sub-module altogether, is respectively a communication module, a CPU module, two switching input modules and two switching value output modules.Communication module is used for setting up communication link with long-range industrial computer, satisfies the Long-distance Control requirement of industrial computer to PLC.CPU is the control maincenter of PLC, receives and storaging user data and order, presses embedded program actuating logic or arithmetic operator, and the result is sent to corresponding output device.One of switching input module is used to receive 16 the left and right sides gate angular transducer signal after gating is handled, and this signal has the balancing a survey function.Another is used to receive each control signal of gate hydraulic headstock gear.The output signal of switching value output module comprises solenoid valve circuit controls signal, left and light brake door motor gating signal and gate condition indicative signal, to reach robotization control and the status display function to the gate hydraulic headstock gear.The user can connect other electrical equipments in addition according to real needs on the spare interface of input, output module, in order to expand or to reconfigure input, the output module function of PLC.PLC gating load module circuit is as shown in Figure 4.Left and right sides gate angular transducer signal adopts the shared same 16 bit switch amount load module TWDDDI16DT of time-division principle as input equipment; Switching through the left and right sides gate oil pump motor probe of contactor (KA_L, KA_R) in the circuit; Connect corresponding gate probe power, make the CPU element of PLC read corresponding gate angle-data and handle.Behind certain time slot, the probe of contactor of this gate motor breaks off, and the probe of contactor of another gate motor is closed, thereby drives the processing of another switch door angle-data.System is operation so back and forth.This time slot conversion is accomplished by the embedded Automatic Program of PLC, need not artificial the intervention.Be connected through diode between the data transmission pin of gate angular transducer and the PLC load module, effectively prevent the phase mutual interference between the two-way gate angular transducer signal.
PLC control signal load module circuit is as shown in Figure 5.This circuit is same to adopt one 16 bit switch amount load module TWDDDI16DT as input equipment, an external switch and 4 control knobs.Operation power SS (SA) is used for from " the gate terrain is controlled automatically ", " a gate distant place is controlled automatically " and " the gate terrain is manually controlled " selection corresponding work mode, when selecting a kind of mode, and all the other mode automatic blockings.And then the gate hydraulic headstock gear operated, push corresponding liter door (SB1), fall door (SB2) or a stop button (SB3), send command signal.When system produces fault, can be by fault SR (SB4) reset system state.PLC is according to instruction repertorie work separately, and its result is exported by the output module circuit.The subsequent use pin of load module can insert other electrical equipments according to user's request, the expanding system input function.
PLC output module circuit is as shown in Figure 6.After input control signal is pressed the embedded routine processes of PLC, export 16 switching value output module TWDDRA16RT to.The output signal both can show the rising (HL1) of hydraulic headstock gear gate, descend (HL2), stop (HL3) and oil pump malfunction (HL4); Again can be to surplus valve (KC), gate rising solenoid valve (K1), gate decline solenoid valve (K2) and left and right sides gate oil pump motor contactor coil (KA_L, KA_R) energising, to start corresponding systemic-function.When serious problems appearred in system, the warning reminding user noted automatically, takes corresponding measure.Subsequent use output interface is used to the expansion output function of the system that realizes.
Left and right sides gate oil pump motor control circuit is as shown in Figure 7.The Oil pump electrical machinery control loop adopts three-phase supply power supply, automatic air-break switch (QF1, QF1 ') break-make power supply.According to the energising of its contactor coil whether left and light brake door motor probe of contactor (KA_L, KA_R) selects corresponding Oil pump electrical machinery running.Electrothermal relay thermal element (FR, FR ') links to each other with Oil pump electrical machinery, makes motor under high-temperature work environment, automatic shutdown protection.Fuse (FU1, FU1 ') links to each other with voltage table, and mutual inductor (TA, TA ') links to each other with reometer (PA, PA '), is used to show voltage, the current status of gate motor circuit.Phase (1W2) in the three-phase supply is drawn, and is used for the relay manual control circuit is supplied power.
Terrain manual control mode based on relay logic is as shown in Figure 8.After the 220V alternating current that is introduced into converts the 24V direct current to, be supplied to whole control relay circuit, and by automatic air-break switch (QF0) control break-make.To operate power SS (SA ') and get to " terrain is manual " position, press tail gates rising button (SB1 '), auxiliary reclay line bag this moment (KA_R, KA_L, KA5, KA3); Gate Oil pump electrical machinery and power of electromagnetic valve indication are started simultaneously; Normally open contact (KA3) closure, gate rising pilot lamp (HL7) is lighted, and time relay line bag (KT1) therefore gets; Cause contact (KA2) closure, surplus valve (YV1) energising.The oil circuit pressure control valve is opened, and prevents the oil pump systems overload, keeps the oil circuit constant pressure.Time relay contact (KT1) in a single day breaks off, relay coil (KA2) dead electricity, and the surplus valve function stop, while gate vertical relay line bag (KA13) gets electric, rises solenoid valve (YV2) function on, and gate begins to rise.In the uphill process, if press tail gates up-down stop button (SB3 '), control relay circuit breaks off, and gate oil pump motor function stop is gone up and down to stop pilot lamp (HL6) and lighted, and gate keeps stationary state.
If press tail gates decline button (SB2 '), auxiliary reclay line bag (KA_R, KA_L, KA5, KA4) electric, contact (KA4) closure, time relay line bag (KT1) therefore electric, gate decline pilot lamp (HL8) is lighted, surplus valve (YV1) function is unlocked.After time relay contact (KT1) broke off, surplus valve was out of service, and a solenoid valve (YV3) function on falls in normally open contact (KA14) closure, and gate begins to descend.If press stop button (SB3 ') during this period, the gate oil pump motor stops to descend, and goes up and down to stop pilot lamp (HL6) and is lighted.
The present invention has designed the bilateral balancing a survey control system of a kind of gate hydraulic headstock gear under the prerequisite based on the PLC automatic control technology.This system can strengthen the measurement function of sensor, successfully manages the gate inclination hidden danger that causes when inconsistent because of left and right sides sensor signal amount, improves the security and the stability of operating gate.The gate sensor has adopted a kind of novel absolute type encoder to measure the angular signal of gate support arm, has overcome the influence that is subject to electromagnetic interference (EMI), power down memory loss that scrambler commonly used brings.Simultaneously, the gate type data that PLC adopts read technology, have improved the PLC load module, have improved input efficiency, have reduced hardware cost.
Claims (6)
1. an industrial network type secondary combined control system is characterized in that having comprised remote centralized control center, and remote centralized control center monitors, controls a plurality of local control units simultaneously through the MODIBUS field bus protocol; Said local control unit comprises terrain control circuit, hydraulic headstock gear, left and light brake door motor control module and input gating switch; Wherein the output terminal of terrain control circuit connects the input end of left and light brake door motor control module and hydraulic headstock gear respectively; The output terminal of left and light brake door motor control module connects the input end of hydraulic headstock gear respectively; The input end of the output termination input gating switch of hydraulic headstock gear, the input end of the output termination terrain control circuit of input gating switch.
2. industrial network type secondary combined control system according to claim 1 is characterized in that said terrain control circuit comprises control relay circuit, gatage display and PLC control circuit.
3. industrial network type secondary combined control system according to claim 1 is characterized in that said hydraulic headstock gear comprises left and light brake door sensor and oil circuit solenoid valve.
4. PLC terrain autocontrol method based on the described industrial network type of claim 1 secondary combined control system, it is characterized in that said method is following: left and right sides gate jaw opening sensor signal is sent into the PLC load module and is handled; Operation power SS (SA) is used for from " the gate terrain is controlled automatically ", " a gate distant place is controlled automatically " and " the gate terrain is manually controlled " selection corresponding work mode, when selecting a kind of mode, and all the other mode automatic blockings; Push corresponding liter door (SB1), fall door (SB2) or stop button (SB3), send command signal.When system produces fault, can be by fault SR (SB4) reset system state; PLC is according to the embedded instructions program work; Its output signal both can show the rising (HL1) of hydraulic headstock gear gate, descend (HL2), stop (HL3) and oil pump malfunction (HL4); Again can be to surplus valve (KC), gate rising solenoid valve (K1), gate decline solenoid valve (K2) and left and right sides gate oil pump motor contactor coil (KA_L, KA_R) energising, to start corresponding systemic-function; When serious problems appearred in system, (R) call user's attention of can also reporting to the police was automatically taked corresponding measure.
5. relay logic terrain hand operated control method based on the described industrial network type of claim 1 secondary combined control system; It is characterized in that said method is following: after the 220V alternating current that is introduced into converts the 24V direct current to; Be supplied to whole control relay circuit, and by automatic air-break switch (QF0) control break-make; To operate power SS (SA ') and get to " terrain is manual " position, press tail gates rising button (SB1 '), auxiliary reclay line bag this moment (KA_R, KA_L, KA5, KA3); Gate Oil pump electrical machinery and power of electromagnetic valve indication are started simultaneously; Normally open contact (KA3) closure, gate rising pilot lamp (HL7) is lighted, and time relay line bag (KT1) therefore gets; Cause contact (KA2) closure, surplus valve (YV1) energising; The oil circuit pressure control valve is opened, and prevents the oil pump systems overload, keeps the oil circuit constant pressure; Time relay contact (KT1) in a single day breaks off, relay coil (KA2) dead electricity, and the surplus valve function stop, while gate vertical relay line bag (KA13) gets electric, rises solenoid valve (YV2) function on, and gate begins to rise; In the uphill process, if press tail gates up-down stop button (SB3 '), control relay circuit breaks off, and gate oil pump motor function stop is gone up and down to stop pilot lamp (HL6) and lighted, and gate keeps stationary state;
If press tail gates decline button (SB2 '), auxiliary reclay line bag (KA_R, KA_L, KA5, KA4) electric, contact (KA4) closure, time relay line bag (KT1) therefore electric, gate decline pilot lamp (HL8) is lighted, surplus valve (YV1) function is unlocked.After time relay contact (KT1) broke off, surplus valve was out of service, and a solenoid valve (YV3) function on falls in normally open contact (KA14) closure, and gate begins to descend.If press stop button (SB3 ') during this period, the gate oil pump motor stops to descend, and goes up and down to stop pilot lamp (HL6) and is lighted.
6. one kind based on the industrial computer of the described industrial network type of claim 1 secondary combined control system instruction long-range control method; It is characterized in that said method is following: the industrial computer in the remote centralized control center adopts the MODIBUS agreement to set up with the PLC communication module in the local control unit and links; PLC uploads the gate running status and the aperture signal is given long-range industrial computer, and the user can independently call and rise door, fall instruction operated from a distance PLC equipment such as door or shutdown through industrial computer and realize the automatic control to the hydraulic headstock gear gate.
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| CN106597986A (en) * | 2017-01-23 | 2017-04-26 | 重庆师范大学 | PID-based double-stage pusher centrifuge control device and method |
| CN109240122A (en) * | 2018-08-31 | 2019-01-18 | 江西洪都航空工业集团有限责任公司 | A kind of method for real-time monitoring and its device based on distributing emulation system |
| CN109443424A (en) * | 2018-10-12 | 2019-03-08 | 湖北工业大学 | A kind of arc open-close sluice gate status monitoring and error comprehensive diagnosis method |
| CN109471426A (en) * | 2018-12-28 | 2019-03-15 | 山东省水利勘测设计院 | A kind of sluice control system with remote fault diagnosis and multistage execution feedback |
| CN110892348A (en) * | 2017-07-20 | 2020-03-17 | 霍尼韦尔国际公司 | Conventional control function in NEWGEN controller and NEWGEN control function |
| CN113422934A (en) * | 2021-06-30 | 2021-09-21 | 江西武大扬帆科技有限公司 | Embedded in-situ control box gate remote monitoring system based on RTSP protocol |
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| CN110892348A (en) * | 2017-07-20 | 2020-03-17 | 霍尼韦尔国际公司 | Conventional control function in NEWGEN controller and NEWGEN control function |
| CN109240122A (en) * | 2018-08-31 | 2019-01-18 | 江西洪都航空工业集团有限责任公司 | A kind of method for real-time monitoring and its device based on distributing emulation system |
| CN109443424A (en) * | 2018-10-12 | 2019-03-08 | 湖北工业大学 | A kind of arc open-close sluice gate status monitoring and error comprehensive diagnosis method |
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