CN106483891A - A kind of automatic control system for cotton gin - Google Patents
A kind of automatic control system for cotton gin Download PDFInfo
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- CN106483891A CN106483891A CN201510529281.4A CN201510529281A CN106483891A CN 106483891 A CN106483891 A CN 106483891A CN 201510529281 A CN201510529281 A CN 201510529281A CN 106483891 A CN106483891 A CN 106483891A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2604—Test of external equipment
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2609—Process control
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Abstract
The invention belongs to cotton processing machinery field, it is related to a kind of automatic control system for cotton gin.This system is by main control singlechip circuit, sensor, current monitoring circuit, converter, relay, parameter setting and parameter display circuit composition in operation, carry out setting and real-time display operation conditions with the working limit of the major parameter to cotton gin system operation for the parameter display circuit in operation or value range by parameter setting, monitor in real time is carried out to the major parameter running by sensor and current of electric observation circuit, and monitor value is inputed to main control singlechip circuit, by these sensor signal values under the control of program internally of main control singlechip circuit, monitor value is compared with corresponding operating parameter setting value, export the work of the converter to cotton gin for the corresponding control signal or corresponding Control phase induction motor.The present invention is a kind of easy to operate, has intelligent protection function to cotton gin system, controls sensitive automatic control system for cotton gin.
Description
Technical field
The invention belongs to cotton processing machinery field, it is related to a kind of automatic control system for cotton gin.
Background technology
At present in the commonly used traditional Control of Cotton Gossypii processing industry cotton gin control and protection system.Because in overall control, automaticity is too low, the not function such as monitoring, automatic interlock, intelligent protection.Not only high labor intensive in operation, and be difficult to pinpoint the problems in time, cause fault to have a strong impact on production.Its subject matter be following some：(1) blowing licker-in, often due to belt slippage or the unequal reason of flower feeding result in blockage, not only can cause impurity-discharging net and the deformation of impurities removal plate, and clear up especially difficult, have a strong impact on production.(2) unginned cotton processed is due to purchasing or the reason concordance such as to deposit poor, the unginned cotton regain such as abruptly entering hopper in normal work is too high, operative employee can not find again in time, cause unginned cotton volume stall, saw blade frictional force increases, produce fire by friction, sometimes even can burn out the adnexa such as hairbrush and slave computer dirt net.(3) it is impossible to flower feeding regulated quantity is changed according to processing Cotton grade, regulation parameter needed for regain setting, often due to adjusting insensitive, resulting in blockage or fire alarm in frictional force increase in terms of flower feeding amount regulation.(4) because current of electric is excessive, often burn out motor, particularly folding case micromachine, electric current is excessive sometimes can not have a power failure in time, cause motor to burn out, change difficult, impact produces.(5) when can not reflect platform, volume of production and setting limit maximum output, count in producing, keep in repair, changing, maintenance is made troubles.Some processing factories adopt touch screen and PLC in whole ginning system, increase analog input and output module to solve to have problems, but because cost is too high, it is unpractical that the cotton gin realizing single is automatically controlled in operation.
Utility model content
It is an object of the invention to provide a kind of easy to operate, there is control function to operating major parameter, have the automatic control system for cotton gin of intelligent protection function to cotton gin system.
Automatic control system for cotton gin provided by the present invention is by main control singlechip circuit、Outer fault sensor、Detection skin gives clearly cotton shaft speed transducer、Detection blowing licker-in speed probe、Unpacking sensor、Mould assembling sensor、Detection hopper cotton quantity sensor、Detection unginned cotton regain sensor、Skin clear licker-in current of electric supervisory circuit、Pi Qing is to cotton motor current monitoring circuit、Cotton ginning mandrel current of electric supervisory circuit、Blowing licker-in current of electric supervisory circuit、Folding case current of electric supervisory circuit、Converter、Skin clear licker-in motor relay、Pi Qing is to cotton motor relay、Cotton ginning mandrel motor relay、Blowing licker-in motor relay、Unpacking relay、Mould assembling relay、Parameter setting and parameter display circuit composition in operation，Give clearly cotton rotating speed by parameter setting with parameter display circuit in operation to skin、Blowing licker-in rotating speed、Unginned cotton regain、The limiting value for operation of unit-hour output is set，Set skin clear licker-in motor、Pi Qing is to cotton motor、Cotton ginning mandrel motor、Blowing licker-in motor、The current value range of folding case motor and flower feeding amount scope，And input these setting values to main control singlechip circuit，By detection hopper cotton quantity sensor、Outer fault sensor、Unpacking sensor、Mould assembling sensor、Detection skin gives clearly cotton shaft speed transducer、Detection blowing licker-in speed probe、The hopper cotton amount that real-time detection is arrived by detection unginned cotton regain sensor、Outer fault-signal、Unpacking signal、Mould assembling signal、Pi Qing is to cotton rotating speed、Blowing licker-in rotating speed and unginned cotton regain input main control singlechip circuit，The control voltage signal of converter or fault-signal are defeated by by main control singlechip by converter，By skin clear licker-in motor、Pi Qing is to cotton motor、Cotton ginning mandrel motor、Blowing licker-in motor、The current monitoring circuit of folding case motor is to operating skin clear licker-in motor、Pi Qing is to cotton motor、Cotton ginning mandrel motor、Blowing licker-in motor、The electric current of folding case motor carries out monitor in real time，And monitor value is inputted main control singlechip circuit，The control voltage of converter and cotton ginning mandrel current of electric are converted into the real-time monitoring value of unit-hour output and flower feeding amount by main control singlechip circuit under program control，And parameter display circuit shows during they and other real-time monitoring values are sent to parameter setting and are run，Simultaneously，These real-time monitoring values are compared with being stored in corresponding operating parameter setting value in main control singlechip，Export the work of the converter to cotton gin for the corresponding control signal and corresponding Control converter and phase induction motor.
Automatic control system for cotton gin provided by the present invention employs sensing technology and singlechip technology and the major parameter in cotton gin system operation is monitored, to the fault of cotton gin external equipment, the frequency converter failure of flower feeding machine work is controlled all to be monitored, when the corollary equipment outside cotton gin system breaks down or converter breaks down, corresponding signal is had to be delivered to main control singlechip circuit, after being connected to these signals, main control singlechip circuit will send control signal to converter, controls the work of flower feeding motor to avoid accident.By detection hopper cotton quantity sensor, the cotton amount in hopper is monitored, when no cotton amount output in hopper, main control singlechip circuit is internally under the control of program, send control signal to converter, stop converter, the work of flower feeding motor, start relay of unpacking to open chamber door and checked simultaneously, when detect have the output of cotton amount in hopper when system recovery normally run.This automatic control system for cotton gin is provided with the monitoring sensor to skin clearly to cotton rotating speed and blowing licker-in rotating speed, when the rotating speed monitored is less than setting value, main control singlechip circuit sends fault-signal, it is simultaneously emitted by control signal, stop the work of corresponding relay and motor, start relay of unpacking, OOBA fault, after failture evacuation, under the control of main control singlechip, system recovers normal work again.This automatic control system is also provided with monitoring the sensor of unginned cotton regain, real-time monitoring is carried out to unginned cotton regain, when the unginned cotton regain monitor value that main control singlechip circuit is connected to is higher than setting value, send alarm signal, and the work to converter output control signal stopping flower feeding motor, start relay of unpacking simultaneously and open chamber door.Avoid because processing unginned cotton concordance poor, the unginned cotton regain such as abruptly entering hopper in normal work is too high, when operative employee can not find again in time, cause unginned cotton volume stall, saw blade frictional force increases, and produces fire by friction, or even can burn out the severe accident generation of the adnexa such as hairbrush and slave computer dirt net.This automatic control system is also provided with to skin clear licker-in current of electric, Pi Qing is to cotton motor electric current, cotton ginning mandrel current of electric, blowing licker-in current of electric, the observation circuit of folding case current of electric, when main control singlechip circuit be connected to the current monitoring value of certain motor not in set point when, main control singlechip circuit will export the relay that corresponding control signal stops this motor, export the work that corresponding control signal stops converter and feeding motor, start relay of unpacking, checked, after fixing a breakdown, system recovers normal work again, main control singlechip also can be to the flower feeding amount of ginning system, unit-hour output is monitored, when flower feeding amount is more than setting value, the exportable corresponding control voltage of main control singlechip automatically adjusts flower feeding amount;When unit-hour output is less than setting value, system is normally run, when unit-hour output is equal to setting value, main control singlechip sends alarm signal to converter, and output signal controls unit-hour output, such as can not be effectively reduced unit-hour output within the time of regulation, main control singlechip circuit output control signal stops converter, flower feeding motor, and open chamber door, it is to avoid accident.
Automatic control system for cotton gin provided by the present invention employs sensing technology and singlechip technology and the major parameter in cotton gin system operation is monitored, to the fault of cotton gin external equipment, the frequency converter failure of flower feeding machine work is controlled all to be monitored, easily operating major parameter can be set, and have control function, when abnormal phenomena in cotton gin work system, automatic control system for cotton gin timely output control signal can avoid the generation of accident.The present invention is a kind of easy to operate from the above analysis, has control function to operating major parameter, has intelligent protection function to cotton gin system, controls sensitive automatic control system for cotton gin.
The present invention compared with prior art has following advantages：
1st, the unginned cotton adapting to Cotton Gossypii processing enterprise present situation feeds the needs of pattern, be a kind of simple and effective machine automatization feeding pattern, greatly reduce the quantity mitigating recruitment and labor intensity, reduce cost, it is to avoid a huge sum of money that cotton mould feeds cotton pattern puts into；
2 、Efficiently solve that Traditional Man feeds that cotton exists yield poorly, high labor intensive, production cost are high, feed cotton uneven present situation, the mechanization really realizing unginned cotton goods yard feeds automatically；
3 、While realizing the mechanization in unginned cotton goods yard and automatically feed, the effectively foreign impurity in cleaning unginned cotton and other impurity, improve cotton quality；
4 、To China's existing unginned cotton goods yard situation strong adaptability, according to the actual conditions of Cotton Gossypii processing factory, work can be fixed, work of also walking.
Brief description
Fig. 1 is the functional-block diagram of automatic control system for cotton gin provided by the present invention；
Fig. 2 is the circuit theory diagrams of main control singlechip circuit in automatic control system for cotton gin；
Fig. 3 is the circuit theory diagrams of parameter setting in automatic control system for cotton gin and parameter display circuit one in operation；
Fig. 4 is the circuit theory diagrams of parameter setting in automatic control system for cotton gin and parameter display circuit two in operation；
Fig. 5 is the circuit theory diagrams of regain sensor；
Fig. 6 is the control main program block diagram of automatic control system for cotton gin；
Fig. 7 is the monitor speed subprogram block diagram of automatic control system for cotton gin；
Fig. 8 is the external fault of automatic control system for cotton gin, frequency converter failure, folding case monitoring subroutine block diagram；
Fig. 9 is the current of electric of automatic control system for cotton gin, regain, a yield monitoring subroutine block diagram.
It is embodied as measure
The enforcement of the present invention is described below in conjunction with the accompanying drawings.Cotton gin control system provided by the present invention is by main control singlechip circuit as shown in Figure 1、Outer fault sensor、Detection skin gives clearly cotton shaft speed transducer、Detection blowing licker-in speed probe、Unpacking sensor、Mould assembling sensor、Detection hopper cotton quantity sensor、Detection unginned cotton regain sensor、Skin clear licker-in current of electric supervisory circuit、Pi Qing is to cotton motor current monitoring circuit、Cotton ginning mandrel current of electric supervisory circuit、Blowing licker-in current of electric supervisory circuit、Folding case current of electric supervisory circuit、Converter、Skin clear licker-in motor relay、Pi Qing is to cotton motor relay、Cotton ginning mandrel motor relay、Blowing licker-in motor relay、Unpacking relay、Mould assembling relay、Parameter setting and parameter display circuit composition in operation，The input of main control singlechip circuit connects outer fault sensor、Detection skin gives clearly cotton shaft speed transducer、Detection blowing licker-in speed probe、Unpacking sensor、Mould assembling sensor、Detection hopper cotton quantity sensor、Detection unginned cotton regain sensor、Skin clear licker-in current of electric supervisory circuit、Pi Qing is to cotton motor current monitoring circuit、Cotton ginning mandrel current of electric supervisory circuit、Blowing licker-in current of electric supervisory circuit、Folding case current of electric supervisory circuit、Parameter display circuit and converter in parameter setting operation，The output of main control singlechip circuit connects parameter setting and parameter display circuit in operation、Converter、Skin clear licker-in motor relay、Pi Qing is to cotton motor relay、Cotton ginning mandrel motor relay、Blowing licker-in motor relay、Unpacking relay、Mould assembling relay.
Fig. 2 is the circuit theory diagrams of main control singlechip circuit in automatic control system for cotton gin.Described main control singlechip circuit is by main control singlechip " img-format=" TIF " img-content=" drawing " orientation=" portrait " inline=" no "/>
、, communication interface circuit、, cascaded shift registers、With cascaded shift registers、Composition, main control singlechipTwo of middle P2 mouth、, three of Pl mouth, " img-format=" TIF " img-content=" drawing " orientation=" portrait " inline=" no "/>
、、, connect main control singlechip respectivelyTwo of middle P2 mouth、, three of P1 mouth,、、, shift registerSerial input terminal SER connect main control singlechipOne of middle P2 mouth, shift registerSerial input terminal SER connect main control singlechipOne of middle P1 mouth, shift registerData output endConnect main control singlechipTwo of middle P2 mouth、, one of P3 mouthAnd two of P1 mouth、Shift registerData output end-Connect main control singlechipTwo of middle P2 mouth,, three of P3 mouth、、.
Described detection unginned cotton regain sensorConnect main control singlechipMiddle A/D input port, detection hopper cotton quantity sensor, sensor of unpacking, mould assembling sensor, detection skin are clearly to cotton shaft speed transducer, detection blowing licker-in speed probe, outer fault sensor-Output pass through photo-coupler-Connect main control singlechip respectivelyOne of middle P2 mouth, two of P1 mouth、, three of P3 mouth、、.Described skin clear licker-in current of electric observation circuit is by transformer, rectification amplifier Constitute, skin gives clearly cotton motor current monitoring circuit by transformer, rectification amplifier、Constitute, cotton ginning mandrel current of electric observation circuit is by transformer, rectification amplifier、Constitute, blowing licker-in current of electric observation circuit is by transformer, rectification amplifier with、Constitute, folding case current of electric observation circuit is by transformer, rectification amplifier、Constitute, the output of these current of electric supervisory circuits connects main control singlechip successively respectivelyFive of middle P1 mouth-, they are all main control singlechipsA/D converter input port.Main control singlechipOne of middle P3 mouthBy phase inverter, amplifier、Connect the adjustable input of external potentiometer of converter, the adjustable input of external potentiometer of converter also with main control singlechipOne of middle P1 mouthConnect, the fault-signal outfan of converter,By photoelectrical coupler、Connect main control singlechipOne of middle P2 mouth, shift register in main control singlechip circuitSignal output part pass through photoelectrical coupler, audionConnect the reset relay of converter, shift register in main control singlechip circuitSignal output part.By photoelectrical coupler, audionConnect the start-stop relay of converter.Described blowing licker-in motor relay、、, skin is clearly to cotton motor relay, crimp mandrel motor relay、、, blowing licker-in motor relay, unpacking, mould assembling relay、Pass through audion respectively-, photo-coupler-Connect shift register in main control singlechip circuitSignal output part- and shift registerSignal output part-, in relay-Upper difference indication light diode taking alarm-.
Fig. 3 is the circuit theory diagrams of parameter setting in automatic control system for cotton gin and parameter display circuit one in operation.As seen from the figure：By button-, single-chip microcomputer, cascaded shift registers-, charactron-And communication interface circuitParameter display circuit one in constituting parameter setting and running, button-、-、-Connect eight of P1 mouth in single-chip microcomputer-, single-chip microcomputerBy its communication interface circuitWith main control singlechip in Fig. 2Communication interface circuitConnect.
Fig. 4 is the circuit theory diagrams of parameter setting in automatic control system for cotton gin and parameter display circuit two in operation.As seen from the figure：By button-, single-chip microcomputer, cascaded shift registers-, charactron-And communication interface circuitParameter display circuit two in constituting parameter setting and running, button-、-、-Connect single-chip microcomputerFive of middle P1 mouth-, single-chip microcomputerBy its communication interface circuitWith main control singlechip in Fig. 2Communication interface circuitConnect.
Referring to Fig. 6-Fig. 9, Fig. 6 is the control main program block diagram of automatic control system for cotton gin, and Fig. 7-Fig. 9 is subprogram.There is main control singlechip in these programsWithMemorizer in.After system is opened, automatic control system for cotton gin carries out monitoring work in an orderly manner to the equipment in system under program control.
Further illustrate the operation principle of automatic control system for cotton gin provided by the present invention below in conjunction with the accompanying drawings：After system is opened, set to running major parameter with parameter display circuit one, two in operation by parameter setting first.Referring to Fig. 3, Fig. 4, by button in parameter display circuit one in parameter setting and operation-It is configured to cotton motor electric current, blowing licker-in current of electric, cotton ginning mandrel current of electric, unginned cotton regain and unit-hour output clearly skin to clearly cotton rotating speed, blowing licker-in rotating speed, skin clear licker-in current of electric, skin, setting value is inputted single-chip microcomputer, single-chip microcomputerBy its communication interface circuitWith main control singlechipCommunication interface circuit, these data are sent to main control singlechip, it is stored in its interior memorizer, button-It is followed successively by blowing licker-in, skin to open, stop button, button to cotton, cotton ginning mandrel, blowing licker-in relay clearly、It is respectively unpacking, mould assembling relay button, button、Adjust yield ascending, descending button for manual, remaining button is standby button.By button in parameter display circuit two in parameter setting and operation、Cotton ginning mandrel current of electric, flower feeding amount are configured, setting value is inputted single-chip microcomputer, single-chip microcomputerBy its communication interface circuitWith main control singlechipCommunication interface circuit, these data are sent to main control singlechipIt is stored in its interior memorizer, button-It is followed successively by the clear licker-in of skin, skin to open, stop button, button to cotton, cotton ginning mandrel, blowing licker-in relay clearly、It is respectively unpacking, mould assembling relay button, button、Adjust yield ascending, descending button for manual, remaining button is standby button.After parameter setting, system enters monitoring programme, and monitoring programme is followed successively by the subprograms such as monitor speed subprogram, hopper cotton amount, external fault, frequency converter failure, the control of folding case, current of electric, regain, yield monitoring.
Monitor speed：Detection skin gives clearly cotton shaft speed transducer, detection blowing licker-in speed probeMonitoring signals pass through photoelectrical coupler,From main control singlechipOuter interruption 0,1 port、Send into main control singlechip circuit.When the skin monitored is more than setting value to clearly cotton rotating speed, blowing licker-in rotating speed, main control singlechip circuit sends normal operation signal, and cotton gin system remains normal and runs;When the skin monitored is less than setting value to clearly cotton rotating speed or blowing licker-in rotating speed, main control singlechip circuit passes through shift registerOutfanOr shift registerOutfanOutput failure control signal lights fault-signal display lampOr fault-signal display lampStop skin clearly to cotton motor relayOr blowing licker-in motor relay, meanwhile, from shift registerOutfanOutput failure control signal lights fault-signal display lampStart relay of unpacking, open chamber door, after pending fault exclusion, under the control of main control singlechip circuit, cotton gin system recovery normally runs.
Hopper cotton amount is monitored：Detection hopper cotton quantity sensorTransducing signal pass through photoelectrical couplerFrom main control singlechipOne input portSend into main control singlechip circuit.When there being cotton amount in the hopper monitored, system is normally run, when no cotton amount in hopper, shift register in main control singlechip circuitSignal output partBy photoelectrical coupler, audion output alarm signal light light emitting diode, simultaneously to the start-stop relay of converterSend control signal, stop the output of converter, stop flower feeding motor, meanwhile, output failure control signal lights fault-signal display lampStart relay of unpacking, open chamber door.After failture evacuation, when having cotton amount in hopper, under the control of main control singlechip circuit, cotton gin system recovery normally runs.
Outer fault, the monitoring of frequency converter failure：Main control singlechip to cotton gin system outside corollary equipment occur fault or converter break down and can be monitored, outer fault sensorSignal from main control singlechipOne input portSend into main control singlechip circuit, from the fault-signal outfan of converterThe frequency converter failure signal of output passes through photoelectrical coupler、From main control singlechipAn input portSend into main control singlechip circuit, after main control singlechip circuit is connected to these signals, through shift register in main control singlechip circuitSignal output partBy photo-coupler, audionStart-stop relay to converterSend control signal, stop converter, stop the work of flower feeding motor, start relay of unpacking simultaneously and open chamber door, after time delay 10 seconds, the shifted depositor of main control singlechip circuitSignal output partBy photoelectrical coupler, audionReset relay to converterOutput reset signal, converter resets, and flower feeding motor is resumed work.Work as main control singlechipOne of middle P1 mouthIt is connected to mould assembling sensorBy photo-couplerDuring the mould assembling gate signal sent, scm software clock timing.Work as main control singlechipMiddle A/D input portIt is connected to unpacking sensorBy photo-couplerDuring the unpacking gate signal sent, main control singlechip stops timing, and when mould assembling again, main control singlechip recovers timing, meanwhile, main control singlechip againThis signal is passed through main control singlechipAnd its communication interface circuit passes to parameter setting and the single-chip microcomputer running in display circuit twoThe accumulative mould assembling time simultaneously drives its display circuit to show.
Current monitoring：Skin clear licker-in current of electric supervisory circuit, skin give clearly cotton motor current monitoring circuit, blowing licker-in current of electric supervisory circuit, the output rectification amplifier of folding case current of electric supervisory circuit、、、Connect main control singlechip successively respectivelyA/D converter input port、、、, these current of electric monitoring circuit monitors values calculate decimal scale monitoring current value, one side main control singlechip through the internal A/D converter of main control singlechip according to each current transformer ratioBy its communication interface circuitShow in parameter display circuit one during these monitoring current values are delivered to parameter setting and run；These monitor values are compared by main control singlechip with corresponding current of electric setting value simultaneously, when skin clear licker-in current of electric, skin give clearly the monitor value of cotton motor electric current, blowing licker-in current of electric, folding case current of electric in set scope, system is normally run, after skin clear licker-in current of electric monitor value continuous 5 seconds outside fixed scope, main control singlechip circuit sends fault-signal, simultaneously shift register in main control singlechip circuitSignal output part-By photoelectrical coupler- send control signal stopping skin clear licker-in motor relay、、Give clearly cotton motor relay with skin, shift register in main control singlechip circuitSignal output partBy photoelectrical coupler, start-stop relay from three poles to converterSend out control signal and stop converter, flower feeding motor, start relay of unpacking.After skin gives cotton motor current monitoring value continuous 5 seconds outside set scope clearly, main control singlechip circuit sends fault-signal, shift register in main control singlechip circuitSignal go out end-By photoelectrical couplerSend control signal and stop skin to cotton motor relay、、Give clearly cotton motor relay with skin, shift register in main control singlechip circuitSignal output partBy photoelectrical coupler, audionStart-stop relay to converterSend out control signal and stop converter, flower feeding motor, start relay of unpacking.After blowing licker-in current of electric monitor value continuous 5 seconds outside set scope, main control singlechip circuit sends fault-signal, shift register in main control singlechip circuitSignal output partBy photoelectric coupling circuitSend control signal and stop blowing licker-in motor relay, shift register in main control singlechip circuitSignal output partBy photoelectrical coupler, triodeStart-stop relay to converterSend out control signal and stop converter, flower feeding motor, start relay of unpacking.After folding case current of electric monitor value continuous 5 seconds outside set scope, main control singlechip circuit sends fault-signal, shift register in main control singlechip circuitSignal output partBy photoelectrical coupler, audionStart-stop relay to converterSend out control signal and stop converter, flower feeding motor, stop unpacking, mould assembling relay, stop folding case motor.
Cotton ginning mandrel current of electric and flower feeding amount are monitored：The output signal of cotton ginning mandrel current of electric observation circuit is from operational amplifier all entrance main control singlechipA/D converter input portThrough main control singlechip internal A/D converter, decimal scale monitoring current value is calculated according to current transformer ratio, main control singlechip circuit is according to the change adjust automatically flower feeding amount adoption rate integral PID algorithm of cotton ginning mandrel current of electric, calculate flower feeding amount, and carry out than so as to stablize in range of set value with cotton ginning mandrel current of electric, flower feeding amount setting value respectively.Its principle is：(explanation：Flower feeding amount is according to the grade processing unginned cotton and regain and to produce the determination of grade of ginned lint situation, is adjusted to desired value by guidance panel yield lifting key.Processing output is identical, if the grade of unginned cotton mandrel motor working current different with regain also can be different, identical yield grade is high and the low unginned cotton of regain, and mandrel motor working current is little, and grade is low and the high unginned cotton mandrel motor working current of regain is accordingly big.) in normal operation cotton ginning mandrel current of electric be both less than its setting value, but the grade due to unginned cotton and regain concordance difference or enter for adjustment flower feeding amount excessive when, cotton ginning mandrel current of electric can be made excessive, main control singlechip circuit passes through internal ratio integral PID algorithm to main control singlechip when electric current is more than setting valueMiddle PWM delivery outletOutput voltage be adjusted, by phase inverter, amplifier,The frequency of output control converter come to control feeding motor rotating speed to reduce flower feeding amount so as to reach stable in range of set value.Avoid because flower feeding amount inequality result in blockage or frictional force increase fire alarm occurs.After crimping mandrel current of electric monitor value continuous 5 seconds outside set scope, main control singlechip circuit sends fault-signal, shift register in main control singlechip circuitSignal output part、Shift registerSignal output partBy photoelectrical coupler、、Go out control signal and stop cotton ginning mandrel motor relay、、, shift register in main control singlechip circuitSignal output partBy photoelectrical coupler, audionFrequency conversion relaySend out control signal and stop converter, flower feeding motor, start relay of unpacking.
Regain monitors：Fig. 5 show the circuit theory diagrams of regain sensor.As seen from the figure：Regain sensorBy the regain probe being contained in hopperWith by rectification amplifier, and its peripheral resistance, electric capacity, transistorThe transmitter composition constituting, enters the unginned cotton of the cotton gin regain probe in hopper, the unginned cotton moisture content due to entering hopper different (i.e. resistivity is different), can produce the voltage of change, the rectified amplifier of voltage of change in transmitter input, after amplification, through audionIt is changed into electric current output (for reducing remote transmission interference), the resistance through connecting for the transmitter output current with its outfanProduce pressure drop, be changed into relevant voltage value and enter main control singlechipA/D turn thruster input portEnter main control singlechip, regain monitor value compared by main control singlechip with setting value, and when monitor value is less than setting value, system is normally run, when monitor value is more than setting value, shift register in main control singlechip circuitSignal output partBy photoelectrical coupler, audionTo frequency conversion start-stop relay allSend out control signal and stop converter, flower feeding motor, start relay of unpacking.
Cotton ginning yield monitoring：Because cotton gin cotton ginning yield depends on plant feed roller rotating speed, and plant feed roller rotating speed depends on converter external potentiometer input、Between control voltage, external potentiometer input、Between control voltage by main control singlechipPWM delivery outlet output voltage controlled, as long as so change main control singlechipPWM delivery outletOutput voltage just can change plant feed roller rotating speed thus changing cotton ginning yield.Adjustable end by the external potentiometer of converterTo main control singlechipThe A/D input port of middle P1 mouthThe control voltage signal of conveying converter, main control singlechipInternal A/D converter calculates decimal scale yield values according to this control voltage signal and flower feeding rotation speed relation, by main control singlechip,Communication interface circuit、And parameter setting and single-chip microcomputer in parameter display circuit one, two in operation,Communication interface circuit、Single-chip microcomputer,Communication, decimal scale yield values are shown by parameter setting with parameter display circuit one, two in operation, simultaneously, the yield monitoring value of real-time monitoring and yield setting value are compared by main control singlechip circuit, when yield monitoring value is less than yield setting value, system is normally run, when yield monitoring value is relatively low, the person of operation can also be by the yield lifting key in parameter display circuit one, two in parameter setting and operation, the single-chip microcomputer in parameter display circuit one, two in parameter setting and operation、By its communication interface、By signal transmission to main control singlechip circuit, main control singlechipPWM delivery outletOutput voltage increases, by phase inverter, rectification amplifier、Enter the adjustable end of external potentiometer of converter, increase external potentiometer input、Between voltage, thus increasing yield, when yield monitoring value be equal to yield setting value when, send alarm signal, now again press yield lifting key inoperative.Because the cotton gin that each factory produces at present does not have production restriction device, and process different grades and unginned cotton requirement production in different volume range of moisture, as crudy will be had a strong impact on beyond volume range, most of factory all adopts aborning remembers money by part, so operative employee is difficult to produce in the volume range requiring aborning.The system can require to set highest limit value (Quality Inspector's setting and modifying limit value need to input password) according to cotton ginning before manufacture, when in producing, adjustment yield is more than setting highest limit value, output yield is reported to the police, display lamp flashes, operative employee presses the manual fall yield key in parameter setting and operational factor display circuit one or two, the single-chip microcomputer in parameter setting and operational factor display circuit one or two,By its communication interface、By this signal transmission to main control singlechip circuit, main control singlechipPWM delivery outletOutput voltage reduces and passes through phase inverter, rectification amplifier、The adjustable end of external potentiometer to converterSending signal, reduces converter external potentiometer input、Between voltage, thus reducing yield, if such as gas product flow readjustment can not be less than limit value in 5 seconds by operative employee, will automatically turn on chamber door, stopping cotton ginning.The present invention can also easily count the accumulative mandrel working time, and when cotton gin mould assembling crimps, mould assembling sensor output 12V voltage makes photoelectrical coupler turn on, scm software clock timing.Due to frequent opening and closing chamber door in cotton gin work, in the case of originally not having timekeeping system, it is difficult to statistics per tour or annual cotton ginning working time, make troubles to production leadtime replacing saw blade, maintenance etc..This time set can be reset by button, show per tour timing or random timing, in addition can be checked by button and involve timing, can involve timing to embossing saw blade cleaning, replacing, each part maintenance offer foundation by checking, chronometric data power down is not lost.
Automatic control system for cotton gin provided by the present invention employs sensing technology and singlechip technology and the major parameter in cotton gin system operation is monitored; the fault of cotton gin external equipment, frequency converter failure are all monitored; can easily operating major parameter be carried out setting, monitor; when abnormal phenomena in cotton gin system; the present invention timely output control signal can avoid the generation of accident, has intelligent protection function to system.Main control singlechip in main control singlechip circuit、Employ 89C5410 high speed, low-power scm, in single-chip microcomputer, be provided with 8 road A/D converters, therefore, the analogue signal entering main control singlechip circuit can directly enter Cong Zhe eight road A/D converter input port.Due to main control singlechipTwo of middle P2 mouth, three points of P1 mouth separately connect main control singlechip respectivelyTwo of middle P2 mouth, three of P1 mouth, two single-chip microcomputers are accomplished、Input signal have, output signal also can United Dispatching, main control singlechip may also be employed the single-chip microcomputer that One function is powerful, pin is enough.Four cascaded shift registers in main control singlechip circuit、、、Using 74HC595, the various control signals that main control singlechip circuit sends just export from the data output end of this four cascaded shift registers.Photoelectric coupling circuit P521 is all adopted to isolate into and out of between the strong, weak electricity signal of main control singlechip circuit, it is to avoid the interference between strong, weak electricity signal.The present invention is provided with two parameter settings and is separately positioned on general service desk and cotton gin fuselage with operational factor display circuit, makes operation more convenient.Two parameter settings and operational factor display circuit are by two single-chip microcomputers、Communicated by their communication interface circuit main control singlechip circuit, set operating parameter setting value or set point are sent to main control singlechip, the transducing signal that sensor is conveyed by main control singlechip by its communication interface circuit, the monitor value of observation circuit conveying pass to two parameter settings and operational factor display circuit, the ruuning situation of real-time display system.Single-chip microcomputer、It is respectively adopted STC89C52. 89C5410, single-chip microcomputer, cascaded shift registers, charactron and communication interface circuit constitute operational factor display circuit, the cascaded shift registers in parameter setting and operational factor display circuit one, two-、-Using 74HC595 charactron-Using SM4105 communication interface circuit、For ease of operative employee, operational factor is adjusted manually using RS4850, be also provided with some manual regulating keys.Detection hopper cotton quantity sensorHopper bottom is placed on using infrared sensor, detection skin gives clearly cotton shaft speed transducer S：With detection blowing licker-in speed probeThe vicinity clearly to cotton axle, blowing licker-in for the skin is separately mounted to using NPN type proximity switch.Unpacking, mould assembling sensor、Using travel switch.Outer fault sensorServed as by the relay of outside corollary equipment, when the outside corollary equipment of cotton gin breaks down, switching signal is sent to main control singlechip circuit from the relay of corollary equipment.
Automatic control system for cotton gin provided by the present invention employs sensing technology and singlechip technology and the major parameter in cotton gin system operation is monitored, to the fault of cotton gin external equipment, the frequency converter failure of flower feeding machine work is controlled all to be monitored, easily operating major parameter can be set, and have control function, when abnormal phenomena in cotton gin work system, automatic control system for cotton gin timely output control signal can avoid the generation of accident.The present invention is a kind of easy to operate from the above analysis, has control function to primary operating parameter, has intelligent protection function to cotton gin system, controls sensitive automatic control system for cotton gin.
Claims (1)
1. a kind of automatic control system for cotton gin，It is characterized in that this control system is by main control singlechip circuit、Outer fault sensor、Detection skin gives clearly cotton shaft speed transducer、Detection blowing licker-in speed probe、Unpacking sensor、Mould assembling sensor、Detection hopper cotton quantity sensor、Detection unginned cotton regain sensor、Skin clear licker-in current of electric supervisory circuit.、Pi Qing is to cotton motor current monitoring circuit、Cotton ginning mandrel current of electric supervisory circuit、Blowing licker-in current of electric supervisory circuit、Folding case current of electric supervisory circuit、Converter、Skin clear licker-in motor relay、Pi Qing is to cotton motor relay、Cotton ginning mandrel motor relay、Blowing licker-in motor relay、Unpacking relay、Mould assembling relay、Parameter setting and parameter display circuit composition in operation，Give clearly cotton rotating speed by parameter setting with parameter display circuit in operation to skin、Blowing licker-in rotating speed、Unginned cotton regain、The limiting value for operation of unit-hour output is set，Set skin clear licker-in motor、Pi Qing is to cotton motor、Cotton ginning mandrel motor、Blowing licker-in motor、The current value range of folding case motor and flower feeding amount scope，And by defeated for these setting values people to main control singlechip circuit，By detection hopper cotton quantity sensor、Outer fault sensor、Unpacking sensor、Mould assembling sensor、Detection skin gives clearly cotton shaft speed transducer、Detection blowing licker-in speed probe、The hopper cotton amount that real-time detection is arrived by detection unginned cotton regain sensor、Outer fault-signal、Unpacking signal、Mould assembling signal、Pi Qing is to cotton rotating speed、Blowing licker-in rotating speed and unginned cotton regain defeated people main control singlechip circuit，By converter by the control voltage signal of converter or fault-signal defeated people main control singlechip，By skin clear licker-in motor、Pi Qing is to cotton motor、Cotton ginning mandrel motor、Blowing licker-in motor、The current monitoring circuit of folding case motor is to operating skin clear licker-in motor、Pi Qing is to cotton motor、Cotton ginning mandrel motor、Blowing licker-in motor、The electric current of folding case motor carries out monitor in real time，And defeated for monitor value people's main control singlechip circuit，The control voltage of converter and cotton ginning mandrel current of electric are converted into the real-time monitoring value of unit-hour output and flower feeding amount by main control singlechip circuit under program control，And parameter display circuit shows during they and other real-time monitoring values are sent to parameter setting and are run，Simultaneously，These real-time monitoring values are compared with depositing corresponding operating parameter setting value in people's main control singlechip，Export the work of the converter to cotton gin for the corresponding control signal and corresponding Control converter and phase induction motor.
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| CN201510529281.4A CN106483891A (en) | 2015-08-26 | 2015-08-26 | A kind of automatic control system for cotton gin |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109629010A (en) * | 2018-12-20 | 2019-04-16 | 中华全国供销合作总社郑州棉麻工程技术设计研究所 | Parameter regulation means, device, equipment and the storage medium of cotton processing equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101201602A (en) * | 2007-11-25 | 2008-06-18 | 安徽天源棉花机械自动化研究有限公司 | Automatic control system for cotton gin |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101201602A (en) * | 2007-11-25 | 2008-06-18 | 安徽天源棉花机械自动化研究有限公司 | Automatic control system for cotton gin |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629010A (en) * | 2018-12-20 | 2019-04-16 | 中华全国供销合作总社郑州棉麻工程技术设计研究所 | Parameter regulation means, device, equipment and the storage medium of cotton processing equipment |
| CN109629010B (en) * | 2018-12-20 | 2022-01-28 | 中华全国供销合作总社郑州棉麻工程技术设计研究所 | Parameter adjusting method, device and equipment of cotton processing equipment and storage medium |
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