CN106786386B - Big inertia motor starts intelligent protection device - Google Patents
Big inertia motor starts intelligent protection device Download PDFInfo
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- CN106786386B CN106786386B CN201710013911.1A CN201710013911A CN106786386B CN 106786386 B CN106786386 B CN 106786386B CN 201710013911 A CN201710013911 A CN 201710013911A CN 106786386 B CN106786386 B CN 106786386B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
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Abstract
The invention discloses a kind of big inertia motors to start intelligent protection device, includes main control singlechip IC1, enabling signal input circuit, motor current detecting circuit, control relay circuit, display circuit and the key circuit connecting respectively with main control singlechip IC1.Main control singlechip IC1 of the present invention acquires real-time starting current by motor current detecting circuit; then it is compared with setting electric motor protecting current value; and will within the unit time real-time current reduced value within the unit time setting electric current reduced value comparison compare; then control relay circuit realization is controlled according to comparison result to control the on-off of motor; cleaning equipment is avoided to occur blocking or the problem of other failures cause over current of motor, cause motor damage.
Description
Technical field
The present invention relates to cotton processing machinery field, specifically a kind of big inertia motor starts intelligent protection device.
Background technique
At present in cotton processing industry, the cleaning equipment that cotton processing needs is more, and is all huge in cleaning equipment
High speed operate licker-in, on startup, since licker-in operating inertia is big, the starting time is long for equipment motor, conventional heat after
Electric appliance, motor overcurrent protection device are difficult to play ideal protecting effect because some licker-ins will in tens seconds could completely
Starting, if the motor overcurrent protection device setting time extended to complete to start, if there is overcurrent during production
Overlong time cannot be shut down in time, be may cause motor and burnt out.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of big inertia motors to start intelligent protection device, sets big inertia
Standby motor start-up has intelligent protection function.
The technical solution of the present invention is as follows:
Big inertia motor starts intelligent protection device, includes main control singlechip IC1, connects respectively with main control singlechip IC1
Enabling signal input circuit, motor current detecting circuit, control relay circuit, display circuit and the key circuit connect；
The enabling signal input circuit includes rectifier diode D5, filter resistance R3, filter resistance R4, filtered electrical
Hold C3, filter capacitor C4 and photo-coupler V1, the anode of starting voltage output the port INV and rectifier diode D5 of power module
Connection, the cathode of rectifier diode D5 connect with one end of filter resistance R3, one end of filter capacitor C3, filter resistance R4 one
End connect with the other end of filter resistance R3, one end of filter capacitor C4, photo-coupler V1 light emitting diode it is positive with
The other end of filter resistance R4 connects, the other end of filter capacitor C3, the other end of filter capacitor C4, photo-coupler V1 luminous two
The cathode of pole pipe is all connected with neutral point N, the collector of photo-coupler V1 phototriode and the port P1.3 of main control singlechip IC1
Connection, the emitter ground connection of photo-coupler V1 phototriode；
The motor current detecting circuit include mutual inductor TA, rectifier diode D1-D4, sampling adjustable resistance R1,
The current output terminal of filter resistance R2, filter capacitor C1 and filter capacitor C2, motor M are connect with the input terminal of mutual inductor TA, whole
The cathode of the anode, rectifier diode D2 that flow diode D1 is connect with the output end L1 of mutual inductor TA, rectifier diode D3's
Positive, rectifier diode D4 cathode is connect with the output end L2 of mutual inductor TA, the cathode of rectifier diode D1, two poles of rectification
The cathode of pipe D3, the one end for sampling adjustable resistance R1, filter capacitor C1 one end connect with one end of filter resistance R2, filtering
The other end of resistance R2, one end of filter capacitor C2 are connect with the port P1.2 of main control singlechip IC1, rectifier diode D2's
Anode, the anode of rectifier diode D4, the sampling other end of adjustable resistance R1, the other end of filter capacitor C1, filter capacitor C2
The other end be grounded；
The control relay circuit includes relay JK1, resistance R5-R7, photo-coupler V2, triode U1, two
Pole pipe D6 and luminous tube LED, one end of the resistance R5 are connect with the port P5.5 of main control singlechip IC1, and resistance R5's is another
One end is connect with the cathode of photo-coupler V2 light emitting diode, the positive connection+5V power supply of photo-coupler V2 light emitting diode, light
The collector of coupler V2 phototriode, the cathode of diode D6, one end of resistance R7, relay JK1 one end with+
The connection of 12V power supply, the other end of resistance R7 are connect with the anode of luminous tube LED, the emitter of photo-coupler V2 phototriode
It being connect with one end of resistance R6, the other end of resistance R6 is connect with the base stage of triode U1, the emitter ground connection of triode U1, and three
The collector of pole pipe U1, the anode of diode D6, luminous tube LED cathode connect with the other end of relay JK1；
The display circuit includes shift register IC2, charactron DS1-DS4, resistance R8-R19 and triode U2-
The port P3.7 of the serial data input SER and main control singlechip IC1 of U5, the shift register IC2 are connect, and displacement is posted
The port P1.0 of the input end of clock mouth SRCLK and main control singlechip IC1 of storage IC2 are connect, and the clock of shift register IC2 is defeated
Inbound port RCLK is connect with the port P1.1 of main control singlechip IC1, and eight parallel output ports of shift register IC2 lead to respectively
It crosses resistance R8-R15 to connect with charactron DS1, charactron DS1-DS4 is sequentially connected in series, the collector difference of triode U2-U5
Corresponding access charactron DS1-DS4, the base stage of triode U2-U5 pass through resistance R16-R19's and main control singlechip IC1 respectively
The port P3.6, the port the P3.2 port P3.1 are connected with the port P3.0, and the emitter of triode U2-U5 is connect with 5V power supply.
The power module by contactor KB1 electromagnetic system respectively with one end of contactor KB1 auxiliary contact, starting
One end of button SB2 connects, the starting voltage output port INV access contactor KB1 electromagnetic system of the power module
Output end, the other end of contactor KB1 auxiliary contact, the other end of start button SB2 connect with one end of stop button SB1
It connects, the other end of stop button SB1 is connect with one end of the relay JK1, and contactor KB1 main contact is connected to motor M
Current output terminal and disconnecting switch QS1 between, the other end of relay JK1, which is linked into, contactor KB1 main contact and keeps apart
At the tie point for closing QS1.
The key circuit includes function key S1, shift key S2 and digital plus key S3, one end of function key S1 and master
The port the P1.4 connection of single-chip microcontroller IC1 is controlled, one end of shift key S2 is connect with the port P1.5 of main control singlechip IC1, and number adds
One end of key S3 is connect with the port P5.4 of main control singlechip IC1, the other end of function key S1, shift key S2 and digital plus key S3
It is grounded.
Advantages of the present invention:
Main control singlechip IC1 of the present invention acquires real-time starting current by motor current detecting circuit, then electric with setting
Machine protective current value comparison, and will within the unit time real-time current reduced value within the unit time setting electric current reduced value pair
Than comparison, control relay circuit realization is then controlled according to comparison result, the on-off of motor is controlled, cleaning equipment is avoided to go out
The problem of now blocking or other failures cause over current of motor, cause motor damage.
Detailed description of the invention
Fig. 1 is the principle of the present invention block diagram.
Fig. 2 is the control flow chart of main control singlechip of the present invention.
Fig. 3 is the circuit connection diagram of motor and relay of the present invention.
Fig. 4 is the structure chart of main control singlechip IC1 of the present invention.
Fig. 5 is the circuit diagram of enabling signal input circuit of the present invention.
Fig. 6 is the circuit diagram of motor current detecting circuit of the present invention.
Fig. 7 is the circuit diagram of invention relay control circuit.
Fig. 8 is the circuit diagram the invention shows circuit.
Fig. 9 is the circuit diagram of key circuit of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
See Fig. 1, it includes main control singlechip IC1 that big inertia motor, which starts intelligent protection device, respectively with main control singlechip
It the enabling signal input circuit of IC1 (see Fig. 4) connection, motor current detecting circuit, control relay circuit, display circuit and presses
Key circuit；
See that Fig. 5, enabling signal input circuit include rectifier diode D5, filter resistance R3, filter resistance R4, filtered electrical
Hold C3, filter capacitor C4 and photo-coupler V1, the anode of starting voltage output the port INV and rectifier diode D5 of power module
Connection, the cathode of rectifier diode D5 connect with one end of filter resistance R3, one end of filter capacitor C3, filter resistance R4 one
End connect with the other end of filter resistance R3, one end of filter capacitor C4, photo-coupler V1 light emitting diode it is positive with
The other end of filter resistance R4 connects, the other end of filter capacitor C3, the other end of filter capacitor C4, photo-coupler V1 luminous two
The cathode of pole pipe is all connected with neutral point N, the collector of photo-coupler V1 phototriode and the port P1.3 of main control singlechip IC1
Connection, the emitter ground connection of photo-coupler V1 phototriode；The starting voltage of power module enters rectifier diode through INV
D5, filter resistance R3, filter resistance R4, filter capacitor C3 and filter capacitor C4 rectifying and wave-filtering after, by under photo-coupler V1
Enter the port P1.3 of main control singlechip IC1 after drawing, system generates enabling signal；
Wherein, see that Fig. 3, power module pass through one of contactor KB1 electromagnetic system respectively with contactor KB1 auxiliary contact
One end connection at end, start button SB2, the starting voltage output port INV access contactor KB1 electromagnetic system of power module
Output end, the other end of contactor KB1 auxiliary contact, the other end of start button SB2 connect with one end of stop button SB1
It connects, the other end of stop button SB1 is connect with one end of relay JK1, and contactor KB1 main contact is connected to the electric current of motor M
Between output end and disconnecting switch QS1, the other end of relay JK1 is linked into contactor KB1 main contact and disconnecting switch QS1
At tie point；
See Fig. 6, motor current detecting circuit include mutual inductor TA, rectifier diode D1-D4, sampling adjustable resistance R1,
The current output terminal of filter resistance R2, filter capacitor C1 and filter capacitor C2, motor M are connect with the input terminal of mutual inductor TA, whole
The cathode of the anode, rectifier diode D2 that flow diode D1 is connect with the output end L1 of mutual inductor TA, rectifier diode D3's
Positive, rectifier diode D4 cathode is connect with the output end L2 of mutual inductor TA, the cathode of rectifier diode D1, two poles of rectification
The cathode of pipe D3, the one end for sampling adjustable resistance R1, filter capacitor C1 one end connect with one end of filter resistance R2, filtering
The other end of resistance R2, one end of filter capacitor C2 are connect with the port P1.2 of main control singlechip IC1, rectifier diode D2's
Anode, the anode of rectifier diode D4, the sampling other end of adjustable resistance R1, the other end of filter capacitor C1, filter capacitor C2
The other end be grounded；The output electric current of motor M enters after entering diode D1-D4 rectification by mutual inductor TA after electric motor starting
Adjustable resistance R1 is sampled, according to power of motor, adjusting resistance R1 makes the detection voltage into the port main control singlechip IC1P1.2 exist
Between 0-5V, detection voltage is converted into corresponding current value after the AD conversion of main control singlechip IC1；
See that Fig. 7, control relay circuit include relay JK1, resistance R5-R7, photo-coupler V2, triode U1, two
One end of pole pipe D6 and luminous tube LED, resistance R5 are connect with the port P5.5 of main control singlechip IC1, the other end of resistance R5 with
The cathode of photo-coupler V2 light emitting diode connects, the positive connection+5V power supply of photo-coupler V2 light emitting diode, photo-coupler
The collector of V2 phototriode, the cathode of diode D6, one end of resistance R7, relay JK1 one end with+12V power supply
Connection, the other end of resistance R7 are connect with the anode of luminous tube LED, the emitter and resistance R6 of photo-coupler V2 phototriode
One end connection, the other end of resistance R6 connect with the base stage of triode U1, and the emitter of triode U1 is grounded, triode U1's
Collector, the anode of diode D6, luminous tube LED cathode connect with the other end of relay JK1；Main control singlechip IC1
The port P5.5 export and by light-coupled isolation control relay JK1 on-off；
See that Fig. 8, display circuit include shift register IC2, charactron DS1-DS4, resistance R8-R19 and triode U2-
The port P3.7 of the serial data input SER and main control singlechip IC1 of U5, shift register IC2 are connect, shift register
The port P1.0 of the input end of clock mouth SRCLK and main control singlechip IC1 of IC2 are connect, the input end of clock of shift register IC2
Mouth RCLK is connect with the port P1.1 of main control singlechip IC1, and eight parallel output ports of shift register IC2 pass through electricity respectively
Resistance R8-R15 is connect with charactron DS1, and charactron DS1-DS4 is sequentially connected in series, and the collector of triode U2-U5 respectively corresponds
Charactron DS1-DS4 is accessed, the base stage of triode U2-U5 passes through the P3.6 of resistance R16-R19 Yu main control singlechip IC1 respectively
Port, the port P3.2, the port P3.1 are connected with the port P3.0, and the emitter of triode U2-U5 is connect with 5V power supply；Display electricity
The port P3.7, P1.0, P1.1 that 4 Digital sum pipe DS1-DS4 and shift register IC2 meet main control singlechip IC1 is routed, realizes section
Choosing, position choosing input connect the port P3.0, P3.1, P3.2, P3.6 of main control singlechip IC1 respectively；
See Fig. 9, key circuit includes function key S1, shift key S2 and digital plus key S3, one end of function key S1 and master
The port the P1.4 connection of single-chip microcontroller IC1 is controlled, one end of shift key S2 is connect with the port P1.5 of main control singlechip IC1, and number adds
One end of key S3 is connect with the port P5.4 of main control singlechip IC1, the other end of function key S1, shift key S2 and digital plus key S3
It is grounded.
See Fig. 2, the working principle of the invention:
(1), master programs to main control singlechip IC1 first, provides system components operating voltage by power module,
Control parameter is set using key circuit and display circuit before booting, and parameter value is sent into inside main control singlechip IC1 and is deposited
Reservoir saves, and power down will not lose；
(2), after power supply is connected, big inertia motor starting intelligent protection device is waiting starting state, and relay JK1 is in
On state, program start bit F0=0；SB2 key is pressed, KB1 is attracted and self-locking, electric motor starting, while starting voltage through the end INV
Mouthful output, makes the P1.3 port voltage quilt of main control singlechip IC1 after the rectifying and wave-filtering of activated signal input circuit, light-coupled isolation
Drop-down, system generate enabling signal；
(3), starting current enters main control singlechip IC1 operation by motor current detecting circuit, by real-time starting current
With setting electric motor protecting current value comparison, and will within the unit time real-time current reduced value within the unit time setting electric current
Reduced value comparison: electric motor protecting current value and the real-time current reduced value within the unit time a, are set when real-time starting current is greater than
Greater than the setting electric current reduced value within the unit time, illustrate that starting current is normally declining, motor is in normal starting；B, work as reality
When starting current be greater than setting electric motor protecting current value and within the unit time real-time current reduced value be less than within the unit time
Setting electric current reduced value illustrates that starting current is abnormal, motor may stall or other failures, main control singlechip IC1 by after
Electrical apparatus control circuit disconnects relay JK1, and motor stops starting, can restart after the reset that need to ascertain the reason；C, when real-time
When starting current is less than setting electric motor protecting current value, electric motor starting terminates, program start bit F0=1, and motor enters normal fortune
Turn state；Under normal operation, over current of motor is caused if there is blocking or other failures, is greater than when the continuous overcurrent time
Over current of motor delay downtime is set, control single-chip microcontroller IC1 is disconnected relay JK1 by control relay circuit, and motor stops
Only start, can restart after the reset that need to ascertain the reason.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (3)
1. big inertia motor starts intelligent protection device, it is characterised in that: include main control singlechip IC1, respectively with master control list
Enabling signal input circuit, motor current detecting circuit, control relay circuit, display circuit and the key of piece machine IC1 connection
Circuit；
The enabling signal input circuit includes rectifier diode D5, filter resistance R3, filter resistance R4, filter capacitor
C3, filter capacitor C4 and photo-coupler V1, the anode of the starting voltage output port INV and rectifier diode D5 of power module are even
Connect, the cathode of rectifier diode D5 is connect with one end of filter resistance R3, one end of filter capacitor C3, filter resistance R4 one end
Connect with the other end of filter resistance R3, one end of filter capacitor C4, photo-coupler V1 light emitting diode anode with filter
The other end of wave resistance R4 connects, the other end of filter capacitor C3, the other end of filter capacitor C4, photo-coupler V1 light-emitting diodes
The cathode of pipe is all connected with neutral point N, and the collector of photo-coupler V1 phototriode and the port P1.3 of main control singlechip IC1 connect
It connects, the emitter ground connection of photo-coupler V1 phototriode；
The motor current detecting circuit includes mutual inductor TA, rectifier diode D1-D4, sampling adjustable resistance R1, filtering
The current output terminal of resistance R2, filter capacitor C1 and filter capacitor C2, motor M are connect with the input terminal of mutual inductor TA, rectification two
The anode of pole pipe D1, the cathode of rectifier diode D2 are connect with the output end L1 of mutual inductor TA, the anode of rectifier diode D3,
The cathode of rectifier diode D4 is connect with the output end L2 of mutual inductor TA, cathode, the rectifier diode D3 of rectifier diode D1
Cathode, sample one end of adjustable resistance R1, one end of filter capacitor C1 is connect with one end of filter resistance R2, filter resistance
The other end of R2, one end of filter capacitor C2 are connect with the port P1.2 of main control singlechip IC1, and rectifier diode D2 is just
Pole, the anode of rectifier diode D4, the sampling other end of adjustable resistance R1, the other end of filter capacitor C1, filter capacitor C2
The other end is grounded；
The control relay circuit includes relay JK1, resistance R5-R7, photo-coupler V2, triode U1, diode
D6 and luminous tube LED, one end of the resistance R5 are connect with the port P5.5 of main control singlechip IC1, the other end of resistance R5
It is connect with the cathode of photo-coupler V2 light emitting diode, the positive connection+5V power supply of photo-coupler V2 light emitting diode, optical coupling
The collector of device V2 phototriode, the cathode of diode D6, one end of resistance R7, one end of relay JK1 are electric with+12V
Source connection, the other end of resistance R7 are connect with the anode of luminous tube LED, the emitter and resistance of photo-coupler V2 phototriode
One end of R6 connects, and the other end of resistance R6 is connect with the base stage of triode U1, the emitter ground connection of triode U1, triode U1
Collector, the anode of diode D6, the cathode of luminous tube LED connect with the other end of relay JK1；
The display circuit includes shift register IC2, charactron DS1-DS4, resistance R8-R19 and triode U2-U5,
The port P3.7 of the serial data input SER and main control singlechip IC1 of the shift register IC2 are connect, shift LD
The port P1.0 of the input end of clock mouth SRCLK and main control singlechip IC1 of device IC2 are connect, the clock input of shift register IC2
Port RCLK is connect with the port P1.1 of main control singlechip IC1, and eight parallel output ports of shift register IC2 pass through respectively
Resistance R8-R15 is connect with charactron DS1, and charactron DS1-DS4 is sequentially connected in series, and the collector of triode U2-U5 is right respectively
Charactron DS1-DS4 should be accessed, the base stage of triode U2-U5 passes through resistance R16-R19's and main control singlechip IC1 respectively
The port P3.6, the port the P3.2 port P3.1 are connected with the port P3.0, and the emitter of triode U2-U5 is connect with 5V power supply.
2. big inertia motor according to claim 1 starts intelligent protection device, it is characterised in that: the power module
It is connect respectively with one end of one end of contactor KB1 auxiliary contact, start button SB2 by contactor KB1 electromagnetic system, it is described
Power module starting voltage output port INV access contactor KB1 electromagnetic system output end, contactor KB1 auxiliary touching
Head the other end, start button SB2 the other end connect with one end of stop button SB1, the other end of stop button SB1 and
One end of the relay JK1 connects, and contactor KB1 main contact is connected to the current output terminal and disconnecting switch QS1 of motor M
Between, the other end of relay JK1 is linked at the tie point of contactor KB1 main contact and disconnecting switch QS1.
3. big inertia motor according to claim 1 starts intelligent protection device, it is characterised in that: the key circuit
It include that one end of function key S1, shift key S2 and digital plus key S3, function key S1 and the port P1.4 of main control singlechip IC1 connect
It connects, one end of shift key S2 is connect with the port P1.5 of main control singlechip IC1, one end of digital plus key S3 and main control singlechip
The port P5.4 of IC1 connects, and the other end of function key S1, shift key S2 and digital plus key S3 are grounded.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710013911.1A CN106786386B (en) | 2017-01-09 | 2017-01-09 | Big inertia motor starts intelligent protection device |
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| CN201710013911.1A CN106786386B (en) | 2017-01-09 | 2017-01-09 | Big inertia motor starts intelligent protection device |
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| CN106786386B true CN106786386B (en) | 2019-01-08 |
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| CN108681265A (en) * | 2018-03-23 | 2018-10-19 | 高湍斌 | The time relay and its control method |
| CN108549258A (en) * | 2018-03-23 | 2018-09-18 | 高湍斌 | The time relay and its control method for multi-channel control |
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| CN101402260A (en) * | 2008-11-08 | 2009-04-08 | 安徽天源棉花机械自动化研究有限公司 | Energy conservation control device of cotton press |
| CN103401217A (en) * | 2013-08-07 | 2013-11-20 | 浙江纪元电力自动化科技有限公司 | Intelligent motor protector |
| CN103544522A (en) * | 2013-09-30 | 2014-01-29 | 河北航天信息技术有限公司 | Packaged cotton counter and counting method |
| CN104360649A (en) * | 2014-10-10 | 2015-02-18 | 上海大学 | Automatic cotton-picking machine packaging control system |
| CN206370679U (en) * | 2017-01-09 | 2017-08-01 | 奎屯东盛禾木电子科技有限公司 | Big inertia motor starts intelligent protection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103208776A (en) * | 2013-01-23 | 2013-07-17 | 陈泽 | Breaker circuit with fault self-detection function |
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| CN101402260A (en) * | 2008-11-08 | 2009-04-08 | 安徽天源棉花机械自动化研究有限公司 | Energy conservation control device of cotton press |
| CN103401217A (en) * | 2013-08-07 | 2013-11-20 | 浙江纪元电力自动化科技有限公司 | Intelligent motor protector |
| CN103544522A (en) * | 2013-09-30 | 2014-01-29 | 河北航天信息技术有限公司 | Packaged cotton counter and counting method |
| CN104360649A (en) * | 2014-10-10 | 2015-02-18 | 上海大学 | Automatic cotton-picking machine packaging control system |
| CN206370679U (en) * | 2017-01-09 | 2017-08-01 | 奎屯东盛禾木电子科技有限公司 | Big inertia motor starts intelligent protection device |
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