CN106787965A - A kind of underground coal mine dual processors soft start control system - Google Patents
A kind of underground coal mine dual processors soft start control system Download PDFInfo
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- CN106787965A CN106787965A CN201611207662.1A CN201611207662A CN106787965A CN 106787965 A CN106787965 A CN 106787965A CN 201611207662 A CN201611207662 A CN 201611207662A CN 106787965 A CN106787965 A CN 106787965A
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- Prior art keywords
- circuit
- contactor
- coal mine
- underground coal
- control system
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
- H02P1/265—Means for starting or running a triphase motor on a single phase supply
Abstract
A kind of underground coal mine dual processors soft start control system; underground coal mine safety requirements occasion higher is applicable, it includes contactor control circuit, button, leakage protection circuit, controllable silicon overheating protection circuit, liquid crystal display, synchronous signal acquisition circuit, triggers circuit, current detection circuit, IGCT component SCR, threephase asynchronous, CPU, contactor；Connected by RS485 interfaces between two CPU; contactor control circuit, button, leakage protection circuit, controllable silicon overheating protection circuit are connected with a CPU; current detection circuit, liquid crystal display and synchronization signal detection circuit are connected with the 2nd CPU; 2nd CPU is connected by triggers circuit with IGCT component; second contactor and IGCT modules in parallel, first contactor are connected with threephase asynchronous again after being connected with IGCT component.The present invention can prevent equipment malfunction from making, and security performance is more excellent.
Description
Technical field
The present invention relates to a kind of underground coal mine dual processors soft start control system, particularly suitable coal mine downhole safety requirement compared with
Occasion high, the soft start for realizing underground threephase asynchronous.
Background technology
Threephase asynchronous is applied to all trades and professions because of its irreplaceable advantage, underground coal mine scrapper conveyor, elevating conveyor,
Disintegrating machine etc. is all driven using threephase asynchronous mostly.The larger starting current of threephase asynchronous to motor in itself
Larger harm is all caused with power network, this problem can install soft starter solution additional before threephase asynchronous.It is modern soft
The dynamic device overwhelming majority is the soft starter with IGCT as core devices, it is necessary to control the Trigger Angle of IGCT using control chip
Realize control of soft.Current most of soft starters are controlled using single single-chip microcomputer, and single-chip microcomputer is good at the number of complexity
Learn and calculate, but be easily interfered.Under the complicated environmental condition of underground, when emergency such as urgent block signal is run into,
Single-chip microcomputer needs to judge interrupt priority level that the reaction time is long；On the other hand, urgent block signal cannot be processed when being interfered
When, the underground security of the lives and property can be threatened greatly, and great potential safety hazard is brought to normal coal production.The present invention is related to
And a kind of underground coal mine dual processors soft start control system can effectively solve the above problems, single-chip microcomputer is responsible for trigger pulse
The judgement of complicated calculations and event, the security-related starting of PLC treatment, stoppings, static pulse, failure, contactor control,
The items such as earth leakage protective, even if single-chip microcomputer breaks down does not interfere with the security of whole system yet.Soft of underground coal mine dual processors
People-oriented to coal industry for autocontrol system, and safety in production has important realistic meaning.
The content of the invention
Based on the security hidden trouble that the conventional list CPU soft start control systems in underground are present is solved, the present invention proposes a kind of
Underground coal mine dual processors soft start control system, to realize the safe soft start of underground coal mine threephase asynchronous.
To achieve the above object, the present invention proposes a kind of underground coal mine dual processors soft start control system technical scheme.
A kind of underground coal mine dual processors soft start control system, including：Contactor K1, contactor K2, contactor control electricity
Road, button, leakage protection circuit, controllable silicon overheating protection circuit, PLC, C8051F040 single-chip microcomputer, liquid crystal display, synchronizing signal
Acquisition Circuit, triggers circuit, current detection circuit, IGCT component SCR, threephase asynchronous M；PLC and C8051F040 is mono-
Piece machine is connected by RS485 interfaces, contactor control circuit, button, leakage protection circuit, controllable silicon overheating protection circuit difference
It is connected with PLC, current detection circuit, liquid crystal display and synchronization signal detection circuit are connected with C8051F040 single-chip microcomputers respectively,
C8051F040 single-chip microcomputers are connected by triggers circuit with IGCT component SCR, and contactor K2 is in parallel with IGCT component SCR, connects
Tentaculum K1 is connected with threephase asynchronous again with after Thyristors in series.
The contactor K1 is connected on the front end of IGCT component SCR, used as main loop master switch, phase asynchronous electricity
When motivation needs to start, contactor K1 is closed first；
The contactor K2 is connected in parallel on IGCT component SCR two ends, plays bypass contactor, and threephase asynchronous is started
After end, contactor K2 is closed, IGCT component is discharged from major loop, extend its life-span；
The contactor control circuit is connected between PLC and two contactor, for driving two contactors；
The button is 8 bit switch amounts stand alone type input block, is connected with PLC input terminals；
The leakage protection circuit is connected, for detecting major loop drain conditions on main loop with PLC；
The controllable silicon overheating protection circuit is connected, the temperature for detecting IGCT component on IGCT component with PLC
Degree；
The PLC is a control CPU of system, is overheated with contactor control circuit, button, leakage protection circuit, controllable silicon
Protection circuit and C8051F040 single-chip microcomputers are connected；
The C8051F040 single-chip microcomputers are another control CPU of system, with liquid crystal display, synchronous signal acquisition, triggering electricity
Road, current detection circuit and PLC connection；
The liquid crystal display is TFT480272RS-4.3 LCDs, LCDs（4、5、6、7）Pin with
C8051F040 single-chip microcomputers（U22）P7.6, P0.1, P0.0 be connected with P7.7；
The synchronous signal acquisition circuit introduces synchrotrans collection signal TC1, TC2, TC3 and carries out resistance point by terminal
Pressure, diode voltage protection and voltage offset electric circuit（U7A）With C8051F040 single-chip microcomputers（U22）P2.2, P2.3, P2.4,
P2.5, P2.6, P2.7 are connected；
The triggers circuit is that IGCT component SCR passes through optocoupler（U1、U2、U3、U4、U5、U6）With C8051F040 single-chip microcomputers
（U22）P3.5, P3.6, P3.7 connection；
The current detection circuit is by terminal by output signal TA1, TA2 of current transformer, TA3 by modulate circuit
（U7B、U8A、U8B）With C8051F040 single-chip microcomputers（U22）AIN0.0, AIN0.1, AIN0.2 connection；
The IGCT component SCR is connected in major loop, is made up of three groups of two-way anti-parallel thyristors；
The threephase asynchronous M is connected with IGCT component SCR.
The present invention is used for underground coal mine dual processors soft start control system, and wherein dual processors are PLC and C8051F040 monolithics
Machine.C8051F040 single-chip microcomputers and control IGBT group signal correlation unit synchronization signal detection circuit, triggers circuit, electric current
Detection circuit, liquid crystal display connection, while being communicated to connect by RS485 with PLC, are mainly used in the synchronization letter according to system feedback
Number, the signal such as current acquisition carries out computing and sends IGCT component SCR trigger signals.PLC and system safe signal correlation unit
Button, leakage protection circuit, controllable silicon overheating protection circuit and contactor control circuit connection, while with C8051F040 monolithics
Machine is communicated.
The work of C8051F040 single-chip microcomputers is controlled by PLC, C8051F040 single-chip microcomputers and PLC mutually coordinated, the two phase of work
Auxiliary to coordinate, associated safety control signal of the invention is all completed by PLC, and complex logic computing of the invention is mono- by C8051F040
Piece machine is completed, and the two respectively takes the chief and completes all working of the present invention jointly, improves reliability of the invention and security.
Underground coal mine dual processors soft start control system proposed by the invention has advantages below compared with prior art：
（1）When interference and error code that single-chip microcomputer is subject to are acted, PLC can in time disconnect contactor, cut off major loop, stop IGCT
Trigger pulse triggers, it is ensured that personal security, prevent equipment malfunction from making；（2）Three be internally integrated using C8051F040 single-chip microcomputers
Schmidt's voltage comparator detection voltage synchronizing signal, and the A/D sample circuits being internally integrated, greatly simplifie controller
Peripheral circuit, control system is reliable and stable；（3）Three-phase mains voltage signal is independently monitored, existing detection one is different from
Phase winding voltage, then by the phase relation of other two-phases of time delay estimation, advantage is to be adapted to underground coal mine three
Phase power phase imbalance problem, the voltage-phase according to actual three-phase triggers correspondence IGCT respectively, improves system reliability.
Brief description of the drawings
Fig. 1 is the general structure principle schematic of underground coal mine dual processors soft start control system of the present invention；
Fig. 2 is that the C8051F040 single-chip minimum systems principle of underground coal mine dual processors soft start control system of the present invention is illustrated
Figure；
Fig. 3 is underground coal mine dual processors soft start control system PLC catenation principle schematic diagrames of the present invention；
Fig. 4 is underground coal mine dual processors soft start control system synchronization signal detection circuit principle schematic of the present invention；
Fig. 5 is underground coal mine dual processors soft start control system current detection circuit principle schematic of the present invention；
Fig. 6 is underground coal mine dual processors soft start control system triggers circuit principle schematic of the present invention；
Fig. 7 is underground coal mine dual processors soft start control system RS485 Principle of Communication schematic diagrames of the present invention.
Specific embodiment
Soft of underground coal mine dual processors alleged by the present invention are described in further detail with specific embodiment below in conjunction with the accompanying drawings
Autocontrol system, the technical staff in the field can realize technology of the present invention after this specific embodiment has been read
Scheme, while can also embody advantage of the present invention and good effect.
As shown in figure 1, underground coal mine dual processors soft start control system, whole system includes tentaculum K1, contactor K2, connects
Tentaculum control circuit, button, leakage protection circuit, controllable silicon overheating protection circuit, PLC, C8051F040 single-chip microcomputer, liquid crystal
Show, synchronous signal acquisition circuit, triggers circuit, current detection circuit, IGCT component SCR, threephase asynchronous M.Wherein：
Described C8051F040 single-chip microcomputers include CPU（U22）, reset circuit（U9）, crystal oscillator（Y1）And the jtag interface for debugging
（P3）；Described synchronous signal acquisition circuit includes the circuit of voltage follow（U7A）, to synchronous voltage signal TC1, TC2, TC3
Enter single-chip microcomputer after being processed（U22）；The triggers circuit includes 6 road optical coupling isolation circuits（U1、U2、U3、U4、U5、U6）；
The current detection circuit includes 3 road signal conditioning circuits（U7B、U8A、U8B）.
As shown in Fig. 2 the C8051F040 single-chip minimum systems of underground coal mine dual processors soft start control system are included again
Position circuit（U9）And crystal oscillator（Y1）With CPU（U22）Correspondence pin is connected, JTAG（P3）Directly and CPU（U22）JTAG pins
It is connected.
As shown in figure 3, underground coal mine dual processors soft start control system PLC catenation principle schematic diagrames, PLC is logical by RS485
Letter interface and single-chip microcomputer（U22）The relay connection of connection, Q0.5, Q0.6 and contactor control circuit, Q0.4 connects with indicator lamp
Display system malfunction is connect, by PLC I/O mouthfuls and single-chip microcomputer（U22）Connection, realizes soft/soft stop, control failure, pulse
Static, controller reset function.
As shown in figure 4, underground coal mine dual processors soft start control system synchronization signal detection circuit, by outside three-phase voltage
Voltage signal TC1, TC2, TC3 of transformer output are protected by electric resistance partial pressure and diode voltage clamper, and by voltage
Follower（U7A）Voltage bias treatment after with C8051F040 single-chip microcomputers（U22）P2.2, P2.3, P2.4, P2.5, P2.6,
P2.7 is connected, and voltage ratio is carried out inside single-chip microcomputer relatively and synchronizing signal is produced.
As shown in figure 5, underground coal mine dual processors soft start control system current detection circuit is by the defeated of foreign current transformer
Go out signal by modulate circuit（U7B、U8A、U8B）With single-chip microcomputer（U22）AIN0.0, AIN0.1, AIN0.2 connection, single-chip microcomputer
A/D samplings, data processing are carried out to it.
As shown in fig. 6, underground coal mine dual processors soft start control system triggers circuit is IGCT component SCR passes through optocoupler
（U1、U2、U3、U4、U5、U6）With single-chip microcomputer（U22）P3.5, P3.6, P3.7 connection, single-chip microcomputer is sent by computing
Start pulse signal forms thyristor triggering impulse and IGCT component SCR is triggered by light-coupled isolation voltage amplification.
As shown in fig. 7, underground coal mine dual processors soft start control system RS485 communication interface circuits, PLC is logical by RS485
Letter interface circuit and single-chip microcomputer（U22）TX0, RX0, P4.3 be connected, PLC and single-chip microcomputer（U22）Between by MAX485 cores
Piece realizes RS485 communication functions after carrying out level conversion.
The present invention on the basis of a kind of above-mentioned hardware configuration of underground coal mine dual processors soft start control system, this professional skill
Art personnel can obtain the combination of corresponding system software and software, and can realize that underground threephase asynchronous can
By safe soft start, other technology contents are related in this manual and technical term should be according to normal known in this area
Know and usual technological means understands and implements, it is also possible to set by rational analysis ratiocination and implemented.
Claims (10)
1. a kind of underground coal mine dual processors soft start control system, including：First contactor K1, second contactor K2, contactor control
Circuit processed, button, leakage protection circuit, controllable silicon overheating protection circuit, liquid crystal display, synchronous signal acquisition circuit, triggering
Circuit, current detection circuit, IGCT component SCR, threephase asynchronous, two CPU；It is characterized in that：Between two CPU
Connected by RS485 interfaces, contactor control circuit, button, leakage protection circuit, controllable silicon overheating protection circuit are with first
CPU is connected, and current detection circuit, liquid crystal display and synchronization signal detection circuit are connected with the 2nd CPU, and the 2nd CPU passes through
Triggers circuit is connected with IGCT component SCR, and second contactor K2 is in parallel with IGCT component SCR, first contactor K1 with it is brilliant
It is connected with threephase asynchronous again after brake tube component SCR series connection.
2. a kind of underground coal mine dual processors soft start control system according to claim 1 a, it is characterized in that CPU is adopted
Use PLC；2nd CPU is C8051F040 single-chip microcomputers.
3. a kind of underground coal mine dual processors soft start control system according to claim 1, it is characterized in that the first contactor
K1 is connected on the front end of IGCT component SCR, first when threephase asynchronous needs to start as main loop master switch
First close first contactor K1.
4. a kind of underground coal mine dual processors soft start control system according to claim 1, it is characterized in that the second contactor
K2 is connected in parallel on IGCT component SCR two ends, plays bypass contactor, after threephase asynchronous proceed-to-send, closure the
Two contactor K2, IGCT component SCR is discharged from major loop, extends its life-span.
5. a kind of underground coal mine dual processors soft start control system according to claim 1, it is characterized in that the contactor is controlled
Circuit is connected between the first CPU and two contactor, for driving two contactors.
6. a kind of underground coal mine dual processors soft start control system according to claim 1, it is characterized in that the controllable silicon is overheated
Protection circuit is installed in being connected on IGCT component SCR and with a CPU, the temperature for detecting IGCT component SCR.
7. a kind of underground coal mine dual processors soft start control system according to claim 1, it is characterized in that the synchronizing signal is adopted
Collector is to introduce synchrotrans collection signal by terminal to carry out electric resistance partial pressure, diode voltage protection and voltage bias electricity
Road U7A is connected with P2.2, P2.3, P2.4, P2.5, P2.6, P2.7 terminal of C8051F040 single-chip microcomputers.
8. a kind of underground coal mine dual processors soft start control system according to claim 1, it is characterized in that the triggers circuit is
IGCT component SCR is connected by optocoupler with P3.5, P3.6, P3.7 terminal of C8051F040 single-chip microcomputers.
9. a kind of underground coal mine dual processors soft start control system according to claim 1, it is characterized in that the current detecting is electric
Road be by terminal by the output signal of current transformer by modulate circuit and C8051F040 single-chip microcomputers AIN0.0,
AIN0.1, AIN0.2 terminal are connected.
10. a kind of underground coal mine dual processors soft start control system according to claim 1, it is characterized in that the thyristor groups
Part SCR is made up of three groups of two-way anti-parallel thyristors；IGCT component SCR is connected in major loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611207662.1A CN106787965A (en) | 2016-12-23 | 2016-12-23 | A kind of underground coal mine dual processors soft start control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611207662.1A CN106787965A (en) | 2016-12-23 | 2016-12-23 | A kind of underground coal mine dual processors soft start control system |
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| Publication Number | Publication Date |
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| CN106787965A true CN106787965A (en) | 2017-05-31 |
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|---|---|---|---|
| CN201611207662.1A Pending CN106787965A (en) | 2016-12-23 | 2016-12-23 | A kind of underground coal mine dual processors soft start control system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5760556A (en) * | 1996-01-26 | 1998-06-02 | General Electric Company | Motor controller and protector unit |
| CN101699702A (en) * | 2009-11-04 | 2010-04-28 | 佛山市柏克电力设备有限公司 | Multi-mode working UPS |
| CN201584933U (en) * | 2009-10-30 | 2010-09-15 | 武汉理工大学 | Medium-high voltage magnetic control soft start controller |
| CN202405646U (en) * | 2011-11-18 | 2012-08-29 | 山宇自动化科技(上海)有限公司 | Soft starting device of asynchronous motor |
| CN105186935A (en) * | 2015-09-06 | 2015-12-23 | 上海工程技术大学 | Digital control system of asynchronous motor soft starter |
| CN106026787A (en) * | 2016-07-11 | 2016-10-12 | 太原理工大学 | Five-stage discrete frequency-conversion soft-start device based on power factor angle closed-loop control |
-
2016
- 2016-12-23 CN CN201611207662.1A patent/CN106787965A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5760556A (en) * | 1996-01-26 | 1998-06-02 | General Electric Company | Motor controller and protector unit |
| CN201584933U (en) * | 2009-10-30 | 2010-09-15 | 武汉理工大学 | Medium-high voltage magnetic control soft start controller |
| CN101699702A (en) * | 2009-11-04 | 2010-04-28 | 佛山市柏克电力设备有限公司 | Multi-mode working UPS |
| CN202405646U (en) * | 2011-11-18 | 2012-08-29 | 山宇自动化科技(上海)有限公司 | Soft starting device of asynchronous motor |
| CN105186935A (en) * | 2015-09-06 | 2015-12-23 | 上海工程技术大学 | Digital control system of asynchronous motor soft starter |
| CN106026787A (en) * | 2016-07-11 | 2016-10-12 | 太原理工大学 | Five-stage discrete frequency-conversion soft-start device based on power factor angle closed-loop control |
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Application publication date: 20170531 |
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