CN103760819B - A kind of ultrasonic cut sound main shaft condition monitoring system and method - Google Patents
A kind of ultrasonic cut sound main shaft condition monitoring system and method Download PDFInfo
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Abstract
The invention discloses a kind of condition monitoring system and method for ultrasonic cut sound main shaft, comprise main control MCU, human-computer interaction interface device, data collecting system and data-storage system. Sensor output interface is connected with modulate circuit input interface by Du Pont's line, modulate circuit output interface is connected with the GPIO mouth of the built-in ADC of main control MCU by Du Pont's line, human-computer interaction interface device is connected by 16 8080 buses with main control MCU, and data-storage system is connected with main control MCU by spi bus; Main control MCU be provided with USB turn serial ports be used for power supply, be provided with 2MSPI-FLASH for preserving character library, be provided with JTAG/SW mouth and carry out downloading data capture program. Each fault parameter of work in-process of the present invention, while exceeding work permit scope, gives sound and light alarm prompting, thereby improves reliability and the security of processing, strengthens enterprise competitiveness, is more suitable for practical implementation.
Description
Technical field
The present invention relates to the status monitoring field of ultrasonic cut sound main shaft, particularly relate to a kind of ultrasonic cut sound masterSpindle Status monitoring system and method.
Background technology
Cellular composite material has high specific strength, high specific stiffness and high ratio modulus, and good is ageing-resistant and anticorrosiveAbility, has enough fracture toughnesses and good anti-fatigue performance, at Aero-Space, military affairs, electronics, automobileJust obtaining applying more and more widely with the field such as bioengineering, and constantly to new field expansion. JustDue to the performance characteristics of the good uniqueness of cellular composite material, traditional processing method is at crudy, efficiency and ringThere is larger deficiency in guarantor aspect. The development of ultrasonic cut technology has well solved the problems referred to above, compound at honeycombIn the ultrasonic cut of material, ultrasonic cut sound main shaft is main body and the key of its processing, the quality of its combination propertyDirectly affect materials processing quality and working (machining) efficiency. But, in actual cellular composite material ultrasonic cut processIn, usually because sound main shaft coupling is bad, key point excess Temperature, point of a knife vibration weakening, tool wear or brokenThe reason such as split, cause cellular composite material ultrasonic cut superiority to reduce or disappear, even whole sound system damagesBad. At present, having become domestic ultrasonic machining unit for the research of ultrasonic cut sound main shaft reliability drops into rawProduce the bottleneck of application. Its research point disperses relatively, often only carries out the monitoring of single failure parameter, lacks a set ofThe complete monitoring system to ultrasonic cut sound main shaft resultant fault parameter. And, the monitoring system of acoustic current main shaftSystem intellectuality, visual, automaticity is relatively low, the quality personnel of too much dependence specialty to surveyParameter is analyzed judgement, and then affects real-time, reliability and the security of sound main shaft status monitoring, finalHave a strong impact on the marketing development of domestic ultrasonic machining unit.
Summary of the invention
For the deficiencies in the prior art, provide a kind of ultrasonic cut sound main shaft condition monitoring system and method.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of ultrasonic cut sound main shaft condition monitoring system, comprises main control MCU, human-computer interaction interface device, numberAccording to acquisition system and data-storage system. Main control MCU adopts ARMCortex-M3, described data acquisition systemTurnkey is drawn together multiple modulate circuits and multiple sensor; Wherein modulate circuit is divided into the modulate circuit of attenuation module and putsThe modulate circuit of large module;
Sensor output interface is connected with modulate circuit input interface by Du Pont's line, and modulate circuit output interface is logicalCross Du Pont's line and be connected with the GPIO mouth of the built-in ADC of main control MCU, human-computer interaction interface device and main control MCU are logicalCross 16 8080 buses and be connected, data-storage system is connected with main control MCU by spi bus; Main control MCUBe provided with USB turn serial ports be used for power supply, be provided with 2MSPI-FLASH for preserving character library, be provided with JTAG/SW mouthCarry out downloading data capture program;
The modulate circuit of attenuation module comprises the first Voltage Feedback type amplifier U1, the first resistance R 1, the second electricityResistance R2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the first diode D1,The second diode D2, the second operational amplifier U2 and the 3rd operational amplifier U3;
The Vin end of the first resistance R 1 is connected with the output of sensor, the other end and the first diode D1 positive pole,One end of the second diode D2 negative pole, the second resistance R 2, the first Voltage Feedback type amplifier U1 forward inputEnd connects, the other end ground connection of the second resistance R 2, the first diode D1 negative pole and the second diode D2 positive pole,One of one end of the first Voltage Feedback type amplifier U1 reverse input end, the 3rd resistance R 3, the 4th resistance R 4End connects, and the voltage output end of the first Voltage Feedback type amplifier U1 is connected main with the other end of the 3rd resistance R 3The GPIO input port of the built-in ADC of control MCU, first Voltage Feedback type amplifier U1 positive-negative power termination ± 5vVoltage; One of the delivery outlet of the other end of the 4th resistance R 4 and the second operational amplifier U2, the 5th resistance R 5End connects, the other end of the second operational amplifier U2 reverse input end and the 5th resistance R 5, the 6th resistance R 6One end, the second operational amplifier U2 positive input ground connection, the output of the 3rd operational amplifier U3 and anti-Be connected with the other end of the 6th resistance R 6 to input, the positive input of the 3rd operational amplifier U3 meets 5VBias voltage, positive-negative power termination ± 5v voltage of the 3rd operational amplifier U3;
The modulate circuit of amplification module comprises four-operational amplifier U4, the 7th resistance R 7 and swept resistance r;
Described swept resistance r represents 10KNTC thermal resistance temperature sensor, and one termination+3.3V voltage is anotherOne end is connected with the positive input of four-operational amplifier U4, one end of the 7th resistance R 7, and the 4th computing is putThe reverse input end of large device U4 is connected the GPIO input port of the built-in ADC of main control MCU with output;
A kind of ultrasonic cut sound main shaft state monitoring method, specifically comprises the following steps:
Step 1: open system clock initializes, time delay initializes, LED initializes, LCD initializes, ADCInitialization, DMA initialize, touch-screen initializes, memory pool initializes;
Step 2: upgrade character library and interface images;
Step 3: initialize and draw;
Step 4: current operation layer and display layer that multi-page buffer memory is set are 1;
Step 5: main load interface;
Step 6: enter touch point scanning imaging system;
Step 7: judge whether it is touch point 1, if not touch point 1, continue execution step six, asFruit touch point is 1, and first current operation layer and display layer are set is 2, secondly loads main shaft observation interface,Enter adc data collection, processing, routine analyzer, by the data that collect and alarming threshold value contrast, if superCross and to report to the police, and preserve, if do not exceeded, by data in liquid crystal screen display, after showing, enter tactileTouch spot scan program, and determine whether touch point 5, if not, continue in liquid crystal screen display data,Touch point 5 if, returns to execution step four;
Step 8: judge whether it is touch point 2, if not touch point 2, continue execution step six, asFruit touch point is 2, and first current operation layer and display layer are set is 3, and next enters dynamic graph display circleFace, calls adc data collection, processing, routine analyzer, and by AD gather data with curve form at liquidBrilliant screen display, enters touch point scanning imaging system after showing, and determines whether touch point 5, if not,Continue in liquid crystal screen display data, touch point 5 if, returns to execution step four;
Step 9: judge whether it is touch point 3, if not touch point 3, continue execution step six, asFruit touch point is 3, and first current operation layer and display layer are set is 4, and next enters interface is set, and passes throughTouch key-press arranges alarming threshold value, and by alarming threshold value size in liquid crystal screen display, after showing, enter touchSpot scan program, and determine whether touch point 5, if not, continue in liquid crystal screen display data,Touch point 5 if, returns to execution step four;
Step 10: judge whether it is touch point 4, if not touch point 4, continue execution step six, asFruit touch point is 4, and first current operation layer and display layer are set is 5, secondly load document administration interface,And by fault data in liquid crystal screen display, after showing, enter touch point scanning imaging system, and determine whether to touchTouch a little 5, if not, to continue in liquid crystal screen display data, touch point 5 if, returns to executionStep 4.
Beneficial effect of the present invention:
(1) a set of embedded-type condition monitoring system can complete whole ultrasonic cut sound main shaft most common failure ginsengThe monitoring of number;
(2) be directed to the monitoring method at transducer impedance angle, the improved Orthogonal correlation method of sampling, it effectively presses downThe interference of white Gaussian noise processed, and amount of calculation is little, and computational accuracy is high, meets the real-time of monitoring system completelyAnd accuracy.
(3) this monitoring system can make user's status information of acquisition sound main shaft at short notice, anti-interference energyPower is strong, can ensure data effectively, fast, stably transmission;
(4) 7 cun of liquid crystal displays show corresponding the data of malfunction monitoring point and collection, check intuitively sound main shaftStatus monitoring parameter;
(5) this monitoring system can be taken precautions against fault generation early, makes enterprise obtain in time technical support, solvesThe problem of technical force of manufacturing enterprise deficiency, and reduce and safeguard and use cost.
(6) this monitoring system can reduce the after service cost of enterprise, improves after-sale service quality, adapts toManufacture the trend of globalization and Market competition, strengthen enterprise competitiveness.
Brief description of the drawings
Fig. 1: structural representation of the present invention;
Fig. 2: sensor placement figure of the present invention;
Fig. 3: the modulate circuit figure of signal attenuation module of the present invention;
Fig. 4: the modulate circuit figure of signal amplification module of the present invention;
Fig. 5: groundwork flow chart of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described;
As shown in Figure 1, a kind of ultrasonic cut sound main shaft condition monitoring system provided by the invention and method comprise masterControl MCU, man-machine interface interactive device, data collecting system, data-storage system. Data collecting system and ARMCortex-M3 microprocessor is connected, and is connected with monitoring sensor used, for obtaining ultrasonic cut sound masterAxle most common failure parameter, sensor and inner ADC pass through the voltage signal of sensor output by modulate circuitAfter amplification, filtering, be converted to the voltage range that meets ADC input; Human-computer interaction interface device and ARMCortex-M3 microprocessor is connected, for showing the data of ultrasonic cut sound main shaft status monitoring; Data storageSystem is connected with ARMCortex-M3 microprocessor, for fault data is preserved. In addition, this monitoringSystem turns Power supply by USB, preserves character library by 2MSPI-FLASH, by JTAG/SW downloading dataCapture program.
ARMCortex-M3 microprocessor is as control, the data acquisition at main control MCU finishing man-machine interaction interfaceControl, the control of data storage.
Preferably, to adopt the chip model based on ARMCortex-M3 kernel be STM32F103RBT6 to main control MCUAs controller, this chip internal carries the successive approximation type a/d C analog-digital converter of 12 16 passages. ReduceThe complexity of system hardware expansion, improved the reliability of system.
Human-computer interaction interface device is made up of touch-screen driver element, LCD driver element, LCD display. ItsMiddle LCD driver element is connected by 16 8080 buses with ARMCortex-M3 microprocessor, and touch-screen drivesMoving cell is connected by iic bus with ARMCortex-M3 microprocessor. Human-computer interaction interface device can prop upHold 8 pages of video memorys, nearly 5 while touch-controls, use touch function can realize mutual switching and the threshold values at interfaceArranging etc. of parameter, has avoided button operation, more intelligent, practical, convenient. This monitoring system has fiveInterface, main interface, sound main shaft observation interface, dynamic graph display interface, arranges interface, file management interface.Main interface is a start logo interface, shows the function that whole monitoring system has; Main shaft observation interfaceCan show the fault parameter of the each key point of whole sound main shaft completely, clear display understands, to user's zero-basePlinth test; Dynamic graph display interface can be to tool nose's amplitude, impedance angle, transducer voltage, electric current, respectively closeKey point temperature is carried out dynamic graph display, facilitates observed data trend graph, for technical professional researches and develops more realWith sound main shaft technical basis is provided; Interface is set and is used for arranging alarming threshold value; File management interface can be checkedFault alarm parameter.
LCD display is 7 cun of TFT-LCD, and resolution ratio is 800*480. Touch-screen driver element passes through IICCommunication interface is connected to drive touch-screen with main control MCU, for completing mutual switching and the threshold values between each interfaceParameter function is set etc. The chip that touch-screen driver element is GT811 by model forms.
The successive approximation type a/d C of 12 16 passages that carry in data acquisition system adopted ARMCortex-M3 sheetAnalog-digital converter. This ADC analog-digital converter can arrange by software the sample frequency of each passage, facilitates highFrequently signal and low frequency signal gather with different sample frequencys, reach and rationally utilize ARMCortex-M3 micro-The internal resource of processor. ADC analog-digital converter is 0～3.3V to the voltage request scope of input signal, therefore,The signal voltage range of sensor output will amplify through modulate circuit, filtering is converted to and can be adopted by ADCThe voltage of collection. The signal data being gathered by ADC passes through data processing, analyzes afterwards at 7 cun of TFT-LCD liquid crystalScreen display.
SPIFLASH is used for storing character library. SPIFLASH is that W25X16 chip forms by model, and capacity is 2MByte. It is industry control MCU power supply that USB turns serial ports. SD card is used for preserving abnormal data. SD card capacity is 2G.JTAG/SW is for the burning of data acquisition software program.
As shown in Figure 2, the sensing of a kind of ultrasonic cut sound main shaft condition monitoring system provided by the invention and methodDevice layout. Ultrasonic cut sound spindle machine structure division mainly comprises: transducer, ultrasonic transformer, cutter, andSupersonic generator is that power frequency electricity is converted into supersonic frequency, and the work of whole sound main shaft be unable to do without ultrasonic wave and occursDevice. And supersonic generator inside comprises: rectification module, inversion module, matching module. Cut according to ultrasonicCut frame for movement and the service condition of sound main shaft, analyze the each parameter that obtains affecting ultrasonic cut sound spindle processing,And determine that according to each parameter selected sensor is: ACS712ELC-20A DC current sensor 201,10KNTC contact thermal resistance temperature sensor 202, LTSR15-NP AC current sensor 203, CHV-25PAC voltage sensor 204, the infrared noncontacting proximity sensor 205 of OTP-538U, 10KNTC contact thermal resistanceTemperature sensor 206,377C01 microphone 207.
ACS712ELC-20A DC current sensor 201 is for measuring rectification module output current, rectification moduleCommon fault is that rectifier bridge overcurrent is breakdown. ACS712ELC-20A current sensor 201 will monitorCurrent conversion is that corresponding voltage is gathered by AD, finally shows size of current in man-machine interface, if electric currentValue exceedes pre-set threshold value, will occur sound and light alarm, and overcurrent value is saved in to SD card.
10KNTC contact type temperature sensor 202 is for measuring power tube temperature, and power tube most common failure is exactly temperatureDegree raises, and even damages inversion module up to upper Baidu. 10KNTC thermal resistance temperature sensor 202 is by temperatureDegree value is converted to resistance value output, and temperature is higher, and resistance is less. AD analog-digital converter passes through pick-up transducersOutput voltage converses power tube temperature, and in man-machine interface displays temperature size, if temperature value exceedes in advanceIf, will there is sound and light alarm in threshold values, and temperature value is saved in to SD card.
LTSR15-NP AC current sensor 203, CHV-25P AC voltage sensor 204 change for measuringEnergy device input current and transducer both end voltage, sound main shaft most common failure is impedance mismatch, causes sound main shaft systemSystem off resonance or inefficacy. LTSR15-NP AC current sensor 203, CHV-25P AC voltage sensor 204Obtain respectively electric current and the voltage of transducer, and gathered by AD by modulate circuit, gather after voltage,Current digital amount, by the processing of improved Orthogonal correlation method, obtains phase difference between the two, finally on man-machine boundaryFace shows phase difference (being impedance angle) size, if impedance angle value exceedes pre-set threshold value, will occur sound and light alarm,And impedance angle size is saved in to SD card. In addition, can also divide by FFT for the current value after AD conversionAnalyse with correlation computations and obtain supersonic generator output frequency and tool nose's amplitude, and show in man-machine interface.
The infrared noncontacting proximity sensor 205 of OTP-538U is for measurement transducer temperature, and transducer is modal asksTopic is exactly heating problem, the instant heating limit. Because transducer is mainly the conversion that is realized energy by piezoceramic material,And piezoceramic material belongs to ferroelectric material, in large electric field and high-power situation, in piezoceramic materialFerroelectric electric hysteresis loss and the dielectric loss of portion are quite large, can produce a large amount of heats. And sound main shaft is in the course of workIn sometimes in rotation status, therefore need infrared non-contact temperature sensor measure its temperature. Infrared noncontactTemperature value is converted to corresponding magnitude of voltage output by formula sensor 205, through being turned by AD modulus after conditioningParallel operation gather, obtain corresponding temperature value by software processing, and in man-machine interface displays temperature size,If temperature value exceedes pre-set threshold value, will there is sound and light alarm, and temperature value will be saved in to SD card.
10KNTC contact type temperature sensor 206 is for measuring the temperature of sound main shaft Nodes, and node is for solidDetermine sound main shaft itself, Nodes usually due to generation of vibration frictional heat, strengthens the loss of ultrasonic energy, causesSound main shaft tool nose's amplitude is minimum, therefore need measured node temperature. 10KNTC contact type temperature sensor 206 willTemperature value is converted to resistance value output, and temperature is higher, and resistance is less. AD analog-digital converter is by gathering sensingDevice output voltage converses power tube temperature, and in man-machine interface displays temperature size, if temperature value exceedes, will there is sound and light alarm in pre-set threshold value, and temperature value is saved in to SD card.
377C01 microphone 207 is for measuring corner wear noise, and point of a knife in use usually has millDamage, the tool dimension after wearing and tearing changes, thereby causes the node location of ultrasonic vibration system to change, nodeDepart from excessively with clip position, can cause particularly rapidly heating so that damage of bearing of vibrational system. But,Usually because causing point of a knife, system off resonance bursts apart, therefore need to measure corner wear noise. 377C01 microphone 207Pick up the corner wear noise in cellular composite material ultrasonic cut process, the noise signal obtaining is passed through to conditioningAfter circuit, gathered by AD analog-digital converter, the data after collection obtain corresponding sound by software processing, if acoustic pressure grade point exceedes pre-set threshold value, will there is sound and light alarm in the output of pressure grade, and acoustic pressure grade pointBe saved in SD card. In addition, can also obtain sound main shaft by FFT to the noise signal analysis collectingThe resonant frequency of system, and show in man-machine interface.
Above-mentioned all can not be directly by the sheet of ARMCortex-M3 microprocessor by the signal after sensor measurementADC Direct Sampling, therefore need to amplify by modulate circuit, can be sampled after filtering.
As shown in Figure 3,4, a kind of ultrasonic cut sound main shaft condition monitoring system provided by the invention and methodModulate circuit figure. The modulate circuit of this monitoring system comprises two parts: signal attenuation module circuit diagram 3 and signalAmplification module circuit diagram 4.
ACS712ELC-20A DC current sensor 201, LTSR15-NP AC current sensor 203,The voltage signal that CHV-25P AC voltage sensor 204 and 377C01 microphone 207 are exported is greater than built-in ADCInput voltage range 0～3.3V, therefore need modulate circuit that the signal voltage of sensor output is decayed to0～3.3V. As shown in Figure 3, this attenuation module chip used is AD8056 chip, interface input voltage modelEnclose for-10V～+ 10V (being each sensor output voltage scope). After decay, output voltage range is 0～3V, meets the input range of built-in AD chip. Conversion formula is as follows:
As input signal VtnWhen=10V, be input to the signal v of built-in ADAD=Vout=3V；
As input signal VtnWhen=-10V, be input to the signal v of built-in ADAD=Vout=0V。
Temperature sensor 202,206 is contact thermal resistance temperature sensor, and temperature sensor 205 is infraredNoncontacting proximity sensor, 202,206,205 temperature sensors are all to demarcate temperature by the variation of internal resistanceDegree value, and along with the rising resistance value of temperature declines, its output voltage is often several millivolts, than being convenient to ADGather, therefore need modulate circuit that signal voltage is amplified, to reduce measure error. As shown in Figure 4,The amplification module chip used of this modulate circuit is LM358 dual operational amplifier, by resistance r and R dividing potential dropAfter, obtaining Vin voltage range is 0.33～3.3V, its computing formula is as follows:
In the time of variable resistor r minimum, get r=0, now Vtn=Vcc=3.3V。
In the time of variable resistor r maximum, r=900K, now Vtn=0.33V。
Again:
Vout＝Vtn
So output voltage range is also 0.33V～3.3V, meets the input range of built-in AD chip.
As shown in Figure 5, a kind of ultrasonic cut sound main shaft state monitoring method provided by the invention. Whole monitoring isSystem method comprises the hardware initialization of monitoring platform, and the loading of character library, picture is upgraded, the switching at each interface,Touch scanning, data sampling and processing, analysis, demonstration, alarming threshold value setting.
Step 1: open system clock initializes, time delay initializes, LED initializes, LCD initializes, ADCInitialization, DMA initialize, touch-screen initializes, memory pool initializes;
Step 2: upgrade character library and interface images;
Step 3: initialize and draw;
Step 4: current operation layer and display layer that multi-page buffer memory is set are 1;
Step 5: main load interface;
Step 6: enter touch point scanning imaging system;
Step 7: judge whether it is touch point 1, if not touch point 1, continue execution step six, asFruit touch point is 1, and first current operation layer and display layer are set is 2, secondly loads main shaft observation interface,Enter adc data collection, processing, routine analyzer, by the data that collect and alarming threshold value contrast, if superCross and to report to the police, and preserve, if do not exceeded, by data in liquid crystal screen display, after showing, enter tactileTouch spot scan program, and determine whether touch point 5, if not, continue in liquid crystal screen display data,Touch point 5 if, returns to execution step four;
Step 8: judge whether it is touch point 2, if not touch point 2, continue execution step six, asFruit touch point is 2, and first current operation layer and display layer are set is 3, and next enters dynamic graph display circleFace, calls adc data collection, processing, routine analyzer, and by AD gather data with curve form at liquidBrilliant screen display, enters touch point scanning imaging system after showing, and determines whether touch point 5, if not,Continue in liquid crystal screen display data, touch point 5 if, returns to execution step four;
Step 9: judge whether it is touch point 3, if not touch point 3, continue execution step six, asFruit touch point is 3, and first current operation layer and display layer are set is 4, and next enters interface is set, and passes throughTouch key-press arranges alarming threshold value, and by alarming threshold value size in liquid crystal screen display, after showing, enter touchSpot scan program, and determine whether touch point 5, if not, continue in liquid crystal screen display data,Touch point 5 if, returns to execution step four; .
Step 10: judge whether it is touch point 4, if not touch point 4, continue execution step six, asFruit touch point is 4, and first current operation layer and display layer are set is 5, secondly load document administration interface,And by fault data in liquid crystal screen display, after showing, enter touch point scanning imaging system, and determine whether to touchTouch a little 5, if not, to continue in liquid crystal screen display data, touch point 5 if, returns to executionStep 4.
It is the clock that initializes STM32F103RBT6 that system clock initializes major function. Wherein also comprise subtendThe configuration of scale, and the reset of relevant peripheral hardware and configuration.
It is the convenient delay time that directly calls in function that time delay initializes main purpose.
It is to observe the power supply indicator of monitoring system and the indicator lamp of AD data acquisition that LED initializes main purposeWhether normally light, normally show that systems soft ware is in running.
It is to light LCD liquid crystal display that LCD initializes main purpose.
It is the parameters such as input pin that AD is set, sample mode, sample frequency that ADC initializes main purpose.
It is the transmission that facilitates adc data that DMA initializes main purpose, and directly controls transmission without CPU.
It is to realize the touch function of liquid crystal display that touch-screen initializes main purpose.
It is to be character library and interface images storage allocation that memory pool initializes main purpose.
It is the quick switching realizing between each interface that current operation layer and display layer main purpose are set, and mutually itBetween operate noiseless.
The function of a kind of ultrasonic cut sound main shaft condition monitoring system provided by the invention and method comprises: can monitorSupersonic generator output frequency, transducer voltage, electric current, impedance angle, rectification in the sound main shaft course of workElectric current, power tube temperature, node temperature, tool nose's amplitude, the sound main shaft resonant frequency of output module, judge cutterThe parameters such as point weares and teares or bursts apart; Touch control is realized main interface to the switching between each interface, saves complicatedBy key control, make product appearance simple and direct; Display interface variation, have main interface, sound main shaft observation interface,Dynamic graph display interface, interface, file management interface are set; Parameter display is to main axle structure figure at the sound, justIn observing trouble location, simple and clear, convenient and practical.
These are only main principle of the present invention and the spiritual statement of carrying out, be not limited to the present invention, rightIn those skilled in the art, the present invention can have various modifications and variations, all in spirit of the present invention andAny amendment of doing within principle, be equal to replacement, improvement etc., all should be included in protection scope of the present invention itIn.
Claims (2)
1. a ultrasonic cut sound main shaft condition monitoring system, comprises main control MCU, human-computer interaction interface dressPut, data collecting system and data-storage system; Main control MCU adopts ARMCortex-M3, describedData collecting system comprises multiple modulate circuits and multiple sensor; Wherein modulate circuit is divided into attenuation moduleThe modulate circuit of modulate circuit and amplification module;
It is characterized in that: sensor output interface is connected with modulate circuit input interface by Du Pont's line conditioningCircuit output interface is connected with the GPIO mouth of the built-in ADC of main control MCU by Du Pont's line, man-machine interaction circleFace device is connected by 16 8080 buses with main control MCU, data-storage system by spi bus withMain control MCU connects; Main control MCU be provided with USB turn serial ports be used for power supply, be provided with 2MSPI-FLASHBe used for preserving character library, be provided with JTAG/SW mouth and carry out downloading data capture program;
The modulate circuit of attenuation module comprises the first Voltage Feedback type amplifier U1, the first resistance R 1, secondResistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R the 6, the 1 utmost pointPipe D1, the second diode D2, the second operational amplifier U2 and the 3rd operational amplifier U3;
The Vin end of the first resistance R 1 is connected with the output of sensor, and the other end and the first diode D1 are justOne end of the utmost point, the second diode D2 negative pole, the second resistance R 2, the first Voltage Feedback type amplifier U1 are justConnect the other end ground connection of the second resistance R 2, the first diode D1 negative pole and the second diode to inputOne end, the 4th of D2 positive pole, the first Voltage Feedback type amplifier U1 reverse input end, the 3rd resistance R 3One end of resistance R 4 connects, the voltage output end of the first Voltage Feedback type amplifier U1 and the 3rd resistance R 3The other end connect the GPIO input port of main control MCU built-in ADC, the first Voltage Feedback type amplifierU1 positive-negative power termination ± 5v voltage; The other end of the 4th resistance R 4 and the second operational amplifier U2's is defeatedOne end of outlet, the 5th resistance R 5 connects, the second operational amplifier U2 reverse input end and the 5th resistanceThe other end of R5, one end of the 6th resistance R 6 connect, the second operational amplifier U2 positive input ground connection,The output of the 3rd operational amplifier U3 is connected with the other end of the 6th resistance R 6 with reverse input end, and the 3rdThe positive input of operational amplifier U3 connects 5V bias voltage, the positive-negative power of the 3rd operational amplifier U3Termination ± 5v voltage;
The modulate circuit of amplification module comprises four-operational amplifier U4, the 7th resistance R 7 and swept resistance r;
Described swept resistance r represents 10KNTC thermal resistance temperature sensor, one termination+3.3V voltage,The other end is connected with the positive input of four-operational amplifier U4, one end of the 7th resistance R 7, the 4th fortuneThe reverse input end of calculating amplifier U4 is connected the GPIO input port of the built-in ADC of main control MCU with output.
2. a ultrasonic cut sound main shaft state monitoring method, is characterized in that, the method specifically comprises followingStep:
Step 1: open system clock initializes, time delay initializes, LED initializes, LCD initializes,ADC initializes, DMA initializes, touch-screen initializes, memory pool initializes;
Step 2: upgrade character library and interface images;
Step 3: initialize and draw;
Step 4: current operation layer and display layer that multi-page buffer memory is set are 1;
Step 5: main load interface;
Step 6: enter touch point scanning imaging system;
Step 7: judge whether it is touch point 1, if not touch point 1, continue execution step six, asFruit touch point is 1, and first current operation layer and display layer are set is 2, secondly loads main shaft observation interface,Enter adc data collection, processing, routine analyzer, by the data that collect and alarming threshold value contrast, asFruit exceedes reports to the police, and preserves, if do not exceeded, by data in liquid crystal screen display, after demonstrationEnter touch point scanning imaging system, and determine whether touch point 5, if not, continue on liquid crystal displayShow data, touch point 5 if, returns to execution step four;
Step 8: judge whether it is touch point 2, if not touch point 2, continue execution step six, asFruit touch point is 2, and first current operation layer and display layer are set is 3, and next enters dynamic graph display circleFace, calls adc data collection, processing, routine analyzer, and the data that AD is gathered exist with curve formLiquid crystal screen display, enters touch point scanning imaging system after showing, and determines whether touch point 5, ifNot, continue in liquid crystal screen display data, touch point 5 if, returns to execution step four;
Step 9: judge whether it is touch point 3, if not touch point 3, continue execution step six, asFruit touch point is 3, and first current operation layer and display layer are set is 4, and next enters interface is set, and passes throughTouch key-press arranges alarming threshold value, and by alarming threshold value size in liquid crystal screen display, show after enter tactileTouch spot scan program, and determine whether touch point 5, if not, continue at liquid crystal screen display numberAccording to, touch point 5 if, returns to execution step four;
Step 10: judge whether it is touch point 4, if not touch point 4, continue execution step six, asFruit touch point is 4, and first current operation layer and display layer are set is 5, secondly load document administration interface,And by fault data in liquid crystal screen display, after showing, enter touch point scanning imaging system, and determine whetherTouch point 5, if not, continue in liquid crystal screen display data, touch point 5, returns and holds ifRow step 4.
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Citations (4)
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| US4520674A (en) * | 1983-11-14 | 1985-06-04 | Technology For Energy Corporation | Vibration monitoring device |
| WO2005072465A2 (en) * | 2004-01-26 | 2005-08-11 | Anr, L.P. | Flexible process optimizer |
| CN103235202A (en) * | 2012-08-20 | 2013-08-07 | 苏州大学 | Multi-channel analog signal acquisition system with automatic compensation function |
| CN103279100A (en) * | 2013-05-17 | 2013-09-04 | 浙江正泰中自控制工程有限公司 | Universal signal conditioning module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4520674A (en) * | 1983-11-14 | 1985-06-04 | Technology For Energy Corporation | Vibration monitoring device |
| WO2005072465A2 (en) * | 2004-01-26 | 2005-08-11 | Anr, L.P. | Flexible process optimizer |
| CN103235202A (en) * | 2012-08-20 | 2013-08-07 | 苏州大学 | Multi-channel analog signal acquisition system with automatic compensation function |
| CN103279100A (en) * | 2013-05-17 | 2013-09-04 | 浙江正泰中自控制工程有限公司 | Universal signal conditioning module |
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