CN104071717A - Frequency converter and winch system based on PLC and control method thereof - Google Patents
Frequency converter and winch system based on PLC and control method thereof Download PDFInfo
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- CN104071717A CN104071717A CN201410296428.5A CN201410296428A CN104071717A CN 104071717 A CN104071717 A CN 104071717A CN 201410296428 A CN201410296428 A CN 201410296428A CN 104071717 A CN104071717 A CN 104071717A
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Abstract
The invention discloses a frequency converter and winch system based on PLC. The frequency converter and winch system comprises a control console, an electric reactor, a frequency converter, a motor and a winch; repeaters, hand-held devices, emergency shutdown control cabinets and acoustic-optical signalers are uniformly arranged in a coal mine roadway; the repeaters are in communication with the control console after being connected by a leaky cable. A control method of the frequency converter and winch system based on PLC comprises: a, setting a password; b, setting an identification card, c, checking the password; d, judging the identification card; e, judging whether a rectifying unit is started; f. judging whether faults exist; g, selecting a control mode; h, starting the winch and operating; i, judging whether overspeeds; j, judging whether needs to be stopped; k, controlling to stop; l, stopping by a winch driver. According to the winch system and the control method, through the dual assurance of the password and information of the identification card, non-operating person is prohibited from operation; emergency stop can be achieved by the hand-held devices and the emergency shutdown control cabinets, and meanwhile a fault point can be easy to find and analyze through the functions of audible and visual alarm and fault memory, thus bringing about great economic and social benefits.
Description
Technical field
The present invention relates to a kind of frequency converter hoister system and control method thereof based on PLC, in particular, relate in particular to a kind of staff and can carry out wireless communication and remote frequency converter hoister system and control method thereof based on PLC of stopping.
Background technology
Along with the requirement of people to energy-conserving and environment-protective in recent years, frequency converter is used widely under coal mine, is mainly reflected in the application of the stepless time adjustment aspects such as blowdown fan, ventilating set, lifting means, winch, travelling apron.Use frequency converter can reduce electric power line voltage fluctuation, reduce electrical network is impacted, and there are adjustable acceleration function, running velocity and torque limit, the controlled mode that stops, controlled electric motor starting electric current, the wearing and tearing that reversible operation is controlled and reduced coal mine machinery equipment, can effectively reduce costs, improve system stability.Be applied in and in lifting means, winch, not only can reduce the power that the pulling force of this equipment steel rope in starting process and barrel and bend wheel bear, if and do not adopt frequency converter in decentralization process, potential energy can transform heat energy and waste, and also can shorten service life of equipment; The electric energy feedback electrical network that frequency converter can be transformed this part by potential energy now, has accomplished that energy-conservation and potential energy utilizes once again.
Frequency converter is high-tension apparatus, current mine-used frequency-converter voltage is 630V, 1140V, some has reached 3300V, although colliery mechanism has carried out safety standard training to operating personal, but still have personnel to ignore safety regulation for operations due to a variety of causes, and then cause the generation of accident, personal safety is threatened.For the advantage that can bring into play better frequency converter does not produce and threatens the personal safety of colliery operating personal again, so invented, a kind ofly based on S7-1200PLC, solve the method to Frequency Converter Control and various defencive functions under coal mine.Meet Safety of Coal Mine Production requirement, reduced " high investment, low output " phenomenon, complied with country to energy-conserving and environment-protective requirement.
Summary of the invention
The present invention, in order to overcome the shortcoming of above-mentioned technical matters, provides a kind of frequency converter hoister system and control method thereof based on PLC.
Frequency converter hoister system based on PLC of the present invention, comprise control desk, reactor, frequency converter, motor and winch, control desk has collection, computing, communication and control function, control desk is controlled the operation of motor by frequency converter, frequency converter is carried out to overvoltage protection with reactor and Anti-surging impacts, the running state of control desk Real-Time Monitoring frequency converter, is provided with speed sensor on winch; In coal mine roadway, be provided with track; Its special feature is: in coal mine roadway, be evenly laid with repeater, hand-held set, anxious control box and the acousto-optic signal of stopping, repeater connects afterwards by leaky cable and control desk communicates, and hand-held set is realized with wireless communication and anxious the stopping of winch of control desk and being controlled by repeater; Acousto-optic signal is arranged on turnout, plays street lamp and reminding effect; Suddenly stop to be provided with and to control winch scram button out of service on control box.
Frequency converter hoister system and control method thereof based on PLC of the present invention, the stem of described track and afterbody are provided with pulleying switch, and pulleying switch is connected with control desk.
The control method of the frequency converter hoister system based on PLC of the present invention, its special feature is, realizes: a) by following steps. password setting, and the password to control desk while using for the first time arranges, password is revised as to the easily password of memory of operating personal, execution step b); B). identification card setting, select whether use identification card, if choice for use identification card, typing has the personnel's of winch operation qualification identification card number information, so that the identity of identification hoistman; If do not used identification card, without typing identification card information; C). cryptographic check, in use procedure, first the password of staff's input is carried out to verification, and judge the correctness of password, if password is correct, perform step d); If password bad, does not allow next step operation, wait for and re-enter password; D). judgement identification card information, the identification card of wearing by scanning work personnel, obtains identification card information, and whether the identification card information that judgement is read is present in the identification card information of typing, if existed, show that this staff is for hoistman, execution step e); If there is no, rescan identification card information; E). whether rectification unit starts, and judges whether hoistman is opened reactor, if reactor is opened, performs step f); If reactor is not opened, wait for that staff opens reactor; F). judge whether to exist fault, by detecting winch along line states and frequency converter state, judge whether it exists fault, if the fault of existence skips to step c); If there is no fault, performs step g); G). select mode, hoistman is selected the mode of frequency converter according to actual conditions, if be chosen as automatic control, frequency converter starts winch according to constant speed, after winch starting, according to the speed of setting, moves; If be chosen as manual control, frequency converter starts winch under the control action of regulating handle, makes winch move to actual demand speed; H). winch starting and operation, in winch starting process, control desk is controlled suddenly and is stopped the audio alert signal that control box sends " frequency converter ready to start ", and sends red light signal by acousto-optic signal; After winch starting, in the process of normal operation, acousto-optic signal sends audio alert signal and the red alarm signal of " drive a vehicle, forbid pedestrian ", to avoid personnel to enter driving tunnel; I). hypervelocity judgement, the speed that control desk is measured according to speed sensor on winch, whether the moving velocity that judges winch exceeds the speed limit, if hypervelocity, automatically stop the operation of frequency converter, by urgency, stop control box simultaneously and send because hypervelocity causes the voice messaging stopping, so that staff finds out fault cause maintenance in time; J). judge whether to occur parking condition, in the process of Frequency Converter Control winch operation, if there is the situation of necessary parking in tunnel, staff in tunnel is by pressing anxious scram button on control box or the scram button on hand-held set of stopping, send stop signal to control desk, execution step k); K). stop and control, control desk receives after the stop signal that suddenly stops control box or hand-held set transmission, automatically stops the operation of frequency converter, realizes and stopping; If the parking of being undertaken by hand-held set stops control box by urgency and sends the related voice of stopping by hand-held set, if stop by urgency the stop signal that control box sends, by urgency, stop control box and send the related voice of stopping control box parking by urgency; Acousto-optic signal red light alerting signal becomes green simultaneously, and time, reason that frequency converter is stopped are carried out record; L). hoistman stops, if winch has possessed the condition of orderly shutdown, hoistman, by pressing the stop button on control desk, stops the operation of frequency converter.
The control method of the frequency converter hoister system based on PLC of the present invention, step a) in the information of typing also comprise the girth of length, hypervelocity value, pulse number and the belt pulley of tunnel inner orbit.
The invention has the beneficial effects as follows: the frequency converter hoister system based on PLC of the present invention, be provided with frequency converter, control desk and reactor, the control by frequency converter to winch operation, has realized the smooth starting of winch motor, has reduced the impact to electrical network; By repeater is set in tunnel, make hand-held set pass through repeater and can realize the wireless telecommunications with control desk, not only there is voice call and get function ready, and while there is unsafe condition in tunnel, staff can directly stop the operation of winch by hand-held set, realize timely parking in emergency circumstances, avoided the generation of Peril Incident; By arranging in tunnel suddenly, stop control box, staff not only can stop the operation that control box stops winch by urgency, and stops by urgency the voice signal that control box sends, and can judge fast the anxious guilty culprit stopping of winch, so that on-call maintenance; By combined aural and visual alarm is set in tunnel, when winch operation and fault generation, can produce corresponding sound and light alarm signal, guaranteed to greatest extent winch safe in operation.
The control method of the frequency converter hoister system based on PLC of the present invention, adopts cryptographic check and identification card information checking double verification mode, has accomplished that non-competent person can not cycling start, has ensured the safe operation of winch.In tunnel, occurred affecting after the situation of Safety for mine car operation, the scram button that staff in tunnel can stop on control box or hand-held set by urgency is directly closed frequency converter, stop the operation of winch, realized timely parking, avoided the generation of Peril Incident; Also can stop control box and acousto-optic signal sends corresponding voice and light warning signal by urgency, in the time of not only can avoiding driving a vehicle, personnel enter tunnel, but also are convenient to search and analysis of failure point, to the winch on-call maintenance breaking down simultaneously.Frequency converter hoister system and control method based on PLC of the present invention, for society brings larger economic benefit and social benefit, beneficial effect is remarkable, is convenient to application.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the frequency converter hoister system based on PLC of the present invention;
Fig. 2 is the diagram of circuit of the control method of the frequency converter hoister system based on PLC of the present invention.
In figure: 1 control desk, 2 reactors, 3 frequency converters, 4 motors, 5 tracks, 6 winches, 7 repeater, 8 hand-held sets, 9 pulleying switches, the 10 anxious control boxs, 11 acousto-optic signals of stopping.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, provided the frequency converter hoister system based on PLC of the present invention, it comprises control desk 1, reactor 2, frequency converter 3, motor 4, winch 6, repeater 7, hand-held set 9, anxious control box 10 and the combined aural and visual alarm 11 of stopping, the control that shown control desk 1 is realized reactor 2 and frequency converter 3, and can monitor in real time the mode of operation of frequency converter 3.Control desk 1 has acquisition of signal, data operation, communication and output control function, under the effect of reactor 2, can realize the overvoltage protection of frequency converter 3 and Anti-surging are impacted.Frequency converter 3 is realized the smooth starting of motor 4 under the control action of control desk 1, to drive winch 6 operations.
Shown track 5 is arranged in coal mine roadway, and the mine car on 6 pairs of tracks 5 of winch carries out towage.Repeater 7 evenly arranges in tunnel, repeater 7 connects afterwards by leaky cable and control desk 1 carries out communication, hand-held set 8 can be realized the wireless communication function with control desk 1 under the effect of repeater 7, and the winch that can stop moving by hand-held set 8, hand-held set 8 also has the function of getting ready simultaneously, and in tunnel, staff can be whenever and wherever possible by the operating personal of hand-held set 8 contact control deskes 1.Shown urgency stops control box 10 and combined aural and visual alarm 11 is also evenly arranged in tunnel, after it is connected by connection, then is connected with control desk 1; Suddenly stop being provided with scram button on control box 10, can stop the operation of winch, and at winch, occur the anxious stopping time, suddenly stop control box 10 under the control action of control desk, can send corresponding sound fault alarm message, so that in time to maintenance of equipment.Stem and the afterbody of shown track 5 are provided with pulleying switch 9, to prevent winch 6 pulleying.On winch 6, be also provided with speed sensor, so that control desk 1 detects the running velocity of winch 6 in real time.
As shown in Figure 2, provided the diagram of circuit of the control method of the frequency converter hoister system based on PLC of the present invention, it is realized by following steps:
A). password setting, the password to control desk while using for the first time arranges, and password is revised as to the easily password of memory of operating personal, execution step b);
In this step, the information of typing also comprises the girth of length, hypervelocity value, pulse number and the belt pulley of tunnel inner orbit.Because the length of coal mine roadway is different, need set according to actual conditions; When winch moves, when speed is greater than hypervelocity value, understand automatic train stop and send alarm message; In the situation that speed sensor adopts hall speed sensor, the girth of one week corresponding pulse number and belt pulley need be set, to calculate winch speed;
B). identification card setting, select whether use identification card, if choice for use identification card, typing has the personnel's of winch operation qualification identification card number information, so that the identity of identification hoistman; If do not used identification card, without typing identification card information;
C). cryptographic check, in use procedure, first the password of staff's input is carried out to verification, and judge the correctness of password, if password is correct, perform step d); If password bad, does not allow next step operation, wait for and re-enter password;
D). judgement identification card information, the identification card of wearing by scanning work personnel, obtains identification card information, and whether the identification card information that judgement is read is present in the identification card information of typing, if existed, show that this staff is for hoistman, execution step e); If there is no, rescan identification card information;
E). whether rectification unit starts, and judges whether hoistman is opened reactor, if reactor is opened, performs step f); If reactor is not opened, wait for that staff opens reactor;
F). judge whether to exist fault, by detecting winch along line states and frequency converter state, judge whether it exists fault, if the fault of existence skips to step c); If there is no fault, performs step g);
G). select mode, hoistman is selected the mode of frequency converter according to actual conditions, if be chosen as automatic control, frequency converter starts winch according to constant speed, after winch starting, according to the speed of setting, moves; If be chosen as manual control, frequency converter starts winch under the control action of regulating handle, makes winch move to actual demand speed;
H). winch starting and operation, in winch starting process, control desk is controlled suddenly and is stopped the audio alert signal that control box sends " frequency converter ready to start ", and sends red light signal by acousto-optic signal; After winch starting, in the process of normal operation, acousto-optic signal sends audio alert signal and the red alarm signal of " drive a vehicle, forbid pedestrian ", to avoid personnel to enter driving tunnel;
I). hypervelocity judgement, the speed that control desk is measured according to speed sensor on winch, whether the moving velocity that judges winch exceeds the speed limit, if hypervelocity, automatically stop the operation of frequency converter, by urgency, stop control box simultaneously and send because hypervelocity causes the voice messaging stopping, so that staff finds out fault cause maintenance in time;
J). judge whether to occur parking condition, in the process of Frequency Converter Control winch operation, if there is the situation of necessary parking in tunnel, staff in tunnel is by pressing anxious scram button on control box or the scram button on hand-held set of stopping, send stop signal to control desk, execution step k);
K). stop and control, control desk receives after the stop signal that suddenly stops control box or hand-held set transmission, automatically stops the operation of frequency converter, realizes and stopping; If the parking of being undertaken by hand-held set stops control box by urgency and sends the related voice of stopping by hand-held set, if stop by urgency the stop signal that control box sends, by urgency, stop control box and send the related voice of stopping control box parking by urgency; Acousto-optic signal red light alerting signal becomes green simultaneously, and time, reason that frequency converter is stopped are carried out record;
L). hoistman stops, if winch has possessed the condition of orderly shutdown, hoistman, by pressing the stop button on control desk, stops the operation of frequency converter.
Frequency converter hoister system and control method thereof based on PLC, control frequency converter by Frequency Converter Control platform, and Keep Clear-High Voltage to have avoided frequency converter, guarantees the personal safety of operating personal; By the double shield of password and identification card information, accomplished that NOT operation personnel can not cycling start.Also there is fault memory function, be convenient to search analysis of failure point, effectively shorten the maintenance of equipment time, for society brings larger economic and social benefit.
Claims (4)
1. the frequency converter hoister system based on PLC, comprise control desk (1), reactor (2), frequency converter (3), motor (4) and winch (6), control desk has collection, computing, communication and control function, control desk is controlled the operation of motor by frequency converter, frequency converter is carried out to overvoltage protection with reactor and Anti-surging impacts, the running state of control desk Real-Time Monitoring frequency converter, is provided with speed sensor on winch; In coal mine roadway, be provided with track (5); It is characterized in that: in coal mine roadway, be evenly laid with repeater (7), hand-held set (8), anxious control box (10) and the acousto-optic signal (11) of stopping, repeater connects afterwards by leaky cable and control desk communicates, and hand-held set is realized with wireless communication and anxious the stopping of winch of control desk and being controlled by repeater; Acousto-optic signal is arranged on turnout, plays street lamp and reminding effect; Urgency stops control box and control desk communicates, and suddenly stops to be provided with and to control winch scram button out of service on control box.
2. the frequency converter hoister system based on PLC according to claim 1, is characterized in that: the stem of described track (5) and afterbody are provided with pulleying switch (9), and pulleying switch is connected with control desk.
3. the control method based on the frequency converter hoister system based on PLC claimed in claim 1, is characterized in that, by following steps, realizes:
A). password setting, the password to control desk while using for the first time arranges, and password is revised as to the easily password of memory of operating personal, execution step b);
B). identification card setting, select whether use identification card, if choice for use identification card, typing has the personnel's of winch operation qualification identification card number information, so that the identity of identification hoistman; If do not used identification card, without typing identification card information;
C). cryptographic check, in use procedure, first the password of staff's input is carried out to verification, and judge the correctness of password, if password is correct, perform step d); If password bad, does not allow next step operation, wait for and re-enter password;
D). judgement identification card information, the identification card of wearing by scanning work personnel, obtains identification card information, and whether the identification card information that judgement is read is present in the identification card information of typing, if existed, show that this staff is for hoistman, execution step e); If there is no, rescan identification card information;
E). whether rectification unit starts, and judges whether hoistman is opened reactor, if reactor is opened, performs step f); If reactor is not opened, wait for that staff opens reactor;
F). judge whether to exist fault, by detecting winch along line states and frequency converter state, judge whether it exists fault, if the fault of existence skips to step c); If there is no fault, performs step g);
G). select mode, hoistman is selected the mode of frequency converter according to actual conditions, if be chosen as automatic control, frequency converter starts winch according to constant speed, after winch starting, according to the speed of setting, moves; If be chosen as manual control, frequency converter starts winch under the control action of regulating handle, makes winch move to actual demand speed;
H). winch starting and operation, in winch starting process, control desk is controlled suddenly and is stopped the audio alert signal that control box sends " frequency converter ready to start ", and sends red light signal by acousto-optic signal; After winch starting, in the process of normal operation, acousto-optic signal sends audio alert signal and the red alarm signal of " drive a vehicle, forbid pedestrian ", to avoid personnel to enter driving tunnel;
I). hypervelocity judgement, the speed that control desk is measured according to speed sensor on winch, whether the moving velocity that judges winch exceeds the speed limit, if hypervelocity, automatically stop the operation of frequency converter, by urgency, stop control box simultaneously and send because hypervelocity causes the voice messaging stopping, so that staff finds out fault cause maintenance in time;
J). judge whether to occur parking condition, in the process of Frequency Converter Control winch operation, if there is the situation of necessary parking in tunnel, staff in tunnel is by pressing anxious scram button on control box or the scram button on hand-held set of stopping, send stop signal to control desk, execution step k);
K). stop and control, control desk receives after the stop signal that suddenly stops control box or hand-held set transmission, automatically stops the operation of frequency converter, realizes and stopping; If the parking of being undertaken by hand-held set stops control box by urgency and sends the related voice of stopping by hand-held set, if stop by urgency the stop signal that control box sends, by urgency, stop control box and send the related voice of stopping control box parking by urgency; Acousto-optic signal red light alerting signal becomes green simultaneously, and time, reason that frequency converter is stopped are carried out record;
L). hoistman stops, if winch has possessed the condition of orderly shutdown, hoistman, by pressing the stop button on control desk, stops the operation of frequency converter.
4. the control method of the frequency converter hoister system based on PLC according to claim 3, is characterized in that: step a) in the information of typing also comprise the girth of length, hypervelocity value, pulse number and the belt pulley of tunnel inner orbit.
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| CN201410296428.5A CN104071717B (en) | 2014-06-27 | 2014-06-27 | Frequency converter and winch system based on PLC and control method thereof |
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| CN201410296428.5A CN104071717B (en) | 2014-06-27 | 2014-06-27 | Frequency converter and winch system based on PLC and control method thereof |
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| CN104071717B CN104071717B (en) | 2015-06-10 |
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| CN106081834A (en) * | 2016-08-30 | 2016-11-09 | 山西科达富升智能控制技术有限公司 | A kind of mine vertical shaft elevator unmanned control system and control method thereof |
| CN107171698A (en) * | 2017-07-14 | 2017-09-15 | 淮南矿业(集团)有限责任公司 | A kind of mine inspection system based on leaky feeder communication |
| CN107188064A (en) * | 2017-06-06 | 2017-09-22 | 哈尔滨理工大学 | A kind of frequency converter hoister system and its control method based on PLC |
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| CN104071717B (en) | 2015-06-10 |
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Denomination of invention: PLC based inverter winch system and its control method Effective date of registration: 20201106 Granted publication date: 20150610 Pledgee: Shandong Zoucheng rural commercial bank Limited by Share Ltd. Pledgor: SHANDONG SHIJI MINING ELECTROMECHANICAL Co.,Ltd. Registration number: Y2020980007651 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Frequency converter winch system based on PLC and its control method Effective date of registration: 20221123 Granted publication date: 20150610 Pledgee: Shandong Zoucheng rural commercial bank Limited by Share Ltd. Pledgor: SHANDONG SHIJI MINING ELECTROMECHANICAL Co.,Ltd. Registration number: Y2022980023364 |