CN204166319U - A kind of less glue binding machine control system - Google Patents
A kind of less glue binding machine control system Download PDFInfo
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- CN204166319U CN204166319U CN201420556391.0U CN201420556391U CN204166319U CN 204166319 U CN204166319 U CN 204166319U CN 201420556391 U CN201420556391 U CN 201420556391U CN 204166319 U CN204166319 U CN 204166319U
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Abstract
The utility model discloses a kind of less glue binding machine control system, comprise ARM main control unit, described ARM main control unit is connected with touch-screen with FPGA driver element, infrared sensor, optoelectronic switch, relay, heat block, thermopair respectively, and described FPGA driver element is connected with mucilage binding motor with clamping motor, charging motor respectively by constant current subdivision driver element; Wherein, described ARM main control unit comprises main control chip, and the power circuit be connected with main control chip, clock circuit, reset circuit, parallel port display interface, Parallel Interface Communication interface, JTAG debugging interface, AccessPort interface, temperature control circuit, sensor detection circuit, ridge bar testing circuit and control relay circuit.There is good stability, noise be low, mucilage binding quality is good, efficiency is high, the feature such as diverse in function.
Description
Technical field
The utility model relates to a kind of less glue binding machine control system, belongs to print machinery technical field.
Background technology
Less glue binding machine be a kind ofly collect mechanical, electrical, the high precision completing adhesive bookbinding, the high-tech equipment of light one, can be used for the books such as bound book, photograph album, scratchpad, de luxe edition, be particularly suitable for diagram text manufacture center, library, photo studio, medium and small printing enterprise, designing institute, research institute, publishing centre, the file bookbinding purposes of the mechanism such as government bodies, large enterprise, coordinate the output instrument of high-quality and the printing sheets of high-quality, be the optimal selection of short run fast-assembling books, bidding documents bookbinding, mucilage binding effect more can embody the professional standards of file.Primarily of clamp device, feed arrangement, mucilage binding device, heat block, sensing device, shell and control system composition, mainly there is following several defect in traditional cementing machine:
1, drive stable poor, the noise of each motor-drive circuit of clamp device, feed arrangement, mucilage binding device greatly and efficiency is low;
2, lack human-computer interaction interface, user can not each instruction of input/output as requested.
In view of this, the present inventor studies this, and develop a kind of less glue binding machine control system specially, this case produces thus.
Utility model content
The purpose of this utility model is to provide a kind of less glue binding machine control system, has good stability, noise is low, mucilage binding quality is good, efficiency is high, the feature such as diverse in function.
To achieve these goals, solution of the present utility model is:
A kind of less glue binding machine control system, comprise ARM main control unit, described ARM main control unit is connected with touch-screen with FPGA driver element, infrared sensor, optoelectronic switch, relay, heat block, thermopair respectively, and described FPGA driver element is connected with mucilage binding motor with clamping motor, charging motor respectively by constant current subdivision driver element; Wherein, described ARM main control unit comprises main control chip, and the power circuit be connected with main control chip, clock circuit, reset circuit, parallel port display interface, Parallel Interface Communication interface, JTAG debugging interface, AccessPort interface, temperature control circuit, sensor detection circuit, ridge bar testing circuit and control relay circuit.
As preferably, described main control chip adopts ST(STMicw Electronics) the STM32 family chip produced of company, specifically can select 32 based on the STM32F103ZET6 of Cortex-M3 kernel, there is the features such as high-performance, low cost, low-power consumption, and abundant Peripheral Interface well supports the exploitation of less glue binding machine control system.
The Cyclone family chip that described FPGA driver element adopts Altera company to produce, specifically can select model to be the chip of EP1C6T144C8N.The feature of Cyclone family chip is low-power consumption, low cost and interface function are enriched, and adds the cooperation of peripheral circuit, well can complete the control of stepper motor.
Described constant current subdivision driver element comprises level shifting circuit, first photoelectric isolating circuit, DAC-circuit, voltage comparator circuit, filter amplification circuit, second photoelectric isolating circuit, and be respectively used to drive clamping motor, 3 driving chip of charging motor and mucilage binding motor, the signal of the 3.3V of the I/O mouth of FPGA driver element is first converted to the signal of 5V by level shifting circuit, and by the first photoelectric isolating circuit by front end and load completely isolated, be kept at the sine and cosine numerical value in FPGA driver element in advance, analog voltage is become by DAC circuit conversion, the feedback current of stepper motor two phase winding becomes feedback voltage through detecting resistance, then through filter amplification circuit, feedback voltage after amplification again by voltage comparator circuit compared with changed analog voltage, comparative result feeds back to FPGA driver element by the second photoelectric isolating circuit, thus realize the constant current subdivision of stepper motor.
Less glue binding machine control system principle of work: after heat block completes heating, first fix by clamp device the books and periodicals that will bind, thickness is calculated by optoelectronic switch, infrared sensor and ARM main control unit, then ridge bar corresponding is with it selected, ridge bar is inserted again from feed arrangement, after pressing bookbinding button, control system completes the bookbinding to books and periodicals according to technological process, and the bookbinding time of single copy of book periodical is 20 seconds.Above-mentioned less glue binding machine control system mainly has following several advantage:
(1) owing to binding the requirement of flow process, motor needs start and stop frequently, this just makes the bookbinding time greatly increase, the increase of bookbinding time must affect binding efficiency, originally be that utility model realizes Comprehensive Control by ARM main control unit, FPGA driver element and constant current subdivision driver element and constant current subdivision drives, the flexible acceleration and deceleration of each motor can not only ensure the stability of system, the bookbinding time can also be shortened, reach fast, accurate and stable control overflow, ensure the binding efficiency of less glue binding machine;
(2) man-machine interaction is realized by parallel port touch-screen, touch-screen primary responsibility user is to the setting of various bookbinding parameter, the duty of simultaneous display machine, allow user understand the working condition of less glue binding machine at any time, occur that condition feedback is to user, graphical interfaces operation format reduces the operation easier of user, user is facilitated to operate cementing machine, relative serial ports touch-screen, parallel port touch-screen is convenient to develop graceful interactive interface, can also ensure the stability of system simultaneously;
(3) temperature control is the requirement of less glue binding machine binding process, and will heat heat block after start, temperature just can carry out stapling operation after reaching requirement.Heat time is short as much as possible, in forwarding, will provide the environment of a constant temperature as far as possible, the stickiness that the hot melt adhesive competence exertion above such ridge bar is maximum, ensures the technique of bookbinding flow process, binds out books and periodicals attractive in appearance.Thermopair is selected to carry out the detection of temperature, temperature value is converted to electric signal, electric signal is transferred to the process of ARM main control unit again, ARM main control unit process electric signal obtains temperature and rate of change thereof, then by temperature circuit, temperature control algorithm process is carried out to the temperature detected, control heat block finally by heating control circuit to heat, realize isoperibol.
(4) ridge bar is the auxiliary material of less glue binding machine, be intended for the spine of bookbinding books and periodicals, ridge bar scribbles the light and dark hot melt adhesive of striated, it is the important medium of bookbinding books and periodicals, hot melt adhesive presents cohesive after being melted down, and cohesive is the strongest within specified temperatures, and it is the insertion ridge bar helping user correct that ridge bar detects, guarantee that in forwarding, ridge bar is in correct position, ensure the fastness of spine and the aesthetic property of books and periodicals.The detection of ridge bar is by identifying that the hot melt adhesive of striated light and dark on ridge bar realizes, utilize the dieletric reflection rate that light is different to thickness, surfaceness is different different, emitting diode is adopted to irradiate ridge bar, again the light of reflection is detected, the hot melt adhesive of light and dark striated presents different reflectivity to the light irradiated, and finally receives the light of reflection with photoresistance, produces correlation detection signal, identify and analytic signal, reach the object identifying ridge bar.
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the less glue binding machine control system module frame chart of the present embodiment;
Fig. 2 is the ARM main control unit block diagram of the present embodiment;
Fig. 3 is the present embodiment ARM main control unit power circuit principle figure;
Fig. 4 is the present embodiment ARM main control unit clock and reset circuit schematic diagram;
Fig. 5 is the present embodiment ARM main control unit JTAG debug circuit figure;
Fig. 6 is the present embodiment ARM main control unit temperature sensing circuit figure;
Fig. 7 is the present embodiment ARM main control unit heating control circuit figure;
Fig. 8 is the present embodiment ARM main control unit zero cross detection circuit figure;
Fig. 9 is the testing circuit figure of the present embodiment ARM main control unit X7 and X8;
Figure 10 is the present embodiment ARM main control unit radiating circuit figure;
Figure 11 is the present embodiment ARM main control unit receiving circuit figure;
Figure 12 is the present embodiment ARM main control unit control relay circuit figure;
Figure 13 is the constant current subdivision driver element block diagram of the present embodiment.
Embodiment
As shown in Figure 1, a kind of less glue binding machine control system, comprise ARM main control unit 1, described ARM main control unit 1 is connected with touch-screen 8 with FPGA driver element 2, infrared sensor 3, optoelectronic switch 4, relay 5, heat block 6, thermopair 7 respectively, and described FPGA driver element 2 is connected with mucilage binding motor 10c with clamping motor 10a, charging motor 10b respectively by constant current subdivision driver element 9.The core of the less glue binding machine control system described in the present embodiment is that ARM main control unit 1, ARM main control unit 1 drives clamping motor 10a, charging motor 10b and mucilage binding motor 10c by parallel port connection FPGA driver element 2, FPGA driver element 2.ARM main control unit 1 connects touch-screen 8 as display and operation interface, connect thermopair 7 and heat block 6 and be used for detection and control temperature, connection infrared sensor 3 and optoelectronic switch 4 detect the position of books and periodicals, the striped of ridge bar and have assisted bookbinding flow process, connect relay 5 and complete the logic control of binding in flow process.
As shown in Figure 2, in the present embodiment, described ARM main control unit 1 comprises main control chip 11, and the power circuit 12 be connected with main control chip 11, clock circuit 13, reset circuit 14, parallel port display interface 15, Parallel Interface Communication interface 16, JTAG debugging interface 17, AccessPort interface 18, temperature control circuit 19, sensor detection circuit 20, ridge bar testing circuit 21 and control relay circuit 22.Described main control chip 11 adopts ST(STMicw Electronics) company produce STM32 family chip, concrete selection 32 STM32F103ZET6 based on Cortex-M3 kernel, there is the features such as high-performance, low cost, low-power consumption, and abundant Peripheral Interface well supports the exploitation of less glue binding machine control system.
As shown in Figure 3, ARM main control unit 1 has two kinds of voltage: 5V and 3.3V, 3.3V is transformed through AMS1117 chip by the 5V that powers, its most High Output Current can reach 1A, the precision of output voltage is within ± 1%, and the effect of TL431 can be equivalent to voltage stabilizing diode, and 3.3V is supply voltage, VDDA is ADC/DAC voltage, and VREF+ is ADC/DAC reference voltage.In order to allow system that real-time clock (RTC) can be kept after a power failure normally to work, employ 3V lithium battery to power.There is interference mutually between mimic channel and digital circuit, by magnetic bead of connecting between analog power and digital power, reduce the noise between analog power and digital power.
As shown in Figure 4, clock circuit 13 provides driving clock for system, because external crystal-controlled oscillation can produce point-device major clock, so be used for drive system clock adopt be HSE crystal oscillator clock (high speed outer clock signal), what drive real-time clock to adopt is the LSE crystal oscillator (low speed external crystal oscillator) of 32.768kHz, its advantage is to provide a low speed for real-time clock, but highly accurate clock source.For guaranteeing the stable and reliable operation of control system circuit, reset circuit is absolutely necessary a part, and the function of reset circuit is: provide reset signal during system electrification, until after system power good, cancels reset signal.For the purpose of reliable, also just will can cancel reset signal through certain time delay after power good, affect reset to prevent because of the shake of power switch, RC reset circuit just can realize above-mentioned functions.
Main control chip 11 STM32F103ZET6 chip has multiple start-up mode, determines three kinds of different start-up mode by BOOT [1:0] pin.Two pin BOOT0 and BOOT1 on STM32 chip, start after the level state of these two pins when chip reset determines chip reset in which way.BOOT1=X, BOOT0=0, start from main flash storer, this is normal mode of operation; BOOT1=0, BOOT0=1, start from system storage, and the program function that this pattern starts is arranged by producer; BOOT1=1, BOOT0=1, start from built-in SRAM, and this pattern may be used for debugging.That download debugging interface is selected is 20 pin JTAG, JTAG (Joint TestAction Group, combined testing action group) be a kind of international standard test protocol, be mainly used in chip internal to test and emulate system, debug, JTAG technology is a kind of embedded type debugging technology, it encapsulates special test circuit TAP(Test Access Port at chip internal, test access mouth), by special JTAG testing tool, internal node is tested, as shown in Figure 5.
Temperature control circuit 19 is for very important less glue binding machine, and accurate control is the guarantee to bookbinding quality, and temperature control circuit 19 is made up of temperature sensing circuit, heating control circuit and zero cross detection circuit.In the present embodiment, what thermopair 7 was selected is K type paster thermopair, the measurement range of K type paster thermopair is+500 DEG C ~-50 DEG C, measuring accuracy 0.1 DEG C, meet the measurement requirement of less glue binding machine control system to bookbinding temperature completely, K type paster thermopair compact, easy for installation, low price, the thermopair of other model, is more suitable for less glue binding machine relatively.
Temperature sensing circuit adopts special chip to process, as shown in Figure 6, select be Maxim(U.S. letter semiconductor) company produce MAX31855.MAX31855 carries cold junction compensation, and the voltage signal of thermopair is converted into digital quantity temperature, outputs signal tape symbol 14 scale-of-two into SPI form, signal is read-only, measurement range is-270 DEG C ~+1800 DEG C, and precision is 0.25 DEG C, and connected mode as shown in the figure.The thermoelectrical potential that thermopair produces is very faint, and can produce very large interference to thermoelectrical potential when three motors of less glue binding machine run, solution is exactly at thermopair two ends shunt capacitance, filtering high frequency interference.
Temperature control signals controls heat block by MOC3043 and BTA16, MOC3043 is bidirectional triode thyristor optocoupler, BTA16 is bidirectional triode thyristor, because heat block uses alternating current, fit like a glove so use bidirectional triode thyristor optocoupler and bidirectional triode thyristor to control heat block, heating control circuit as shown in Figure 7.
Heat block uses alternating current, must know that zero crossing could control the conduction angle of bidirectional triode thyristor, the size of conduction angle determines silicon controlled ON time, thus control the ON time of heat block, as shown in Figure 8, what zero cross detection circuit detected is the zero crossing of alternating current to zero cross detection circuit.When being in positive half-wave, diode D6, D7 conducting, optocoupler input end LEDs ON, output terminal photodiode one end ground connection, the other end and ground conducting, after 74LVC14, signal INT0 is low; When being in negative half-wave, diode D6, D7 turn off, optocoupler input end turns off, output terminal one end ground connection, the other end is pulled up resistance and draws high, and equally through 74LVC14, signal INT0 is high, so the rising edge of signal INT0 corresponding be exactly alternating current is proceeded to negative half-wave zero crossing by positive half-wave, what in like manner the rising edge of signal INT1 was corresponding is another zero crossing.
Less glue binding machine control system described in the present embodiment employs 8 sensor assemblies, from X1 to X8, have different effects respectively.Comprising 3 pairs of infrared emission sensors and 4 optoelectronic switches, because less glue binding machine heat block temperature is higher, interference can be produced to infrared emission sensor, so the employing of driving infrared emission sensor is particular frequencies.
(1) effect of X1 is the detection of mucilage binding motor position, when less glue binding machine is initialized, allows mucilage binding motor forward initial zero position to, is reference, detects the position of mucilage binding motor in bookbinding flow process with initial zero;
(2) X2 and X3 defines infrared emission, X2 is 2 infrared emission sensors, X3 is 2 infrared receiver sensors, these 2 pairs of sensors are used to the position detecting ridge bar, one is referred to as wide correlation, ridge bar width is detected time ridge bar just inserts, another is long correlation, when wide correlation has detected that ridge bar inserts, charging motor starts to rotate, meanwhile carry out the bar detection of ridge bar, the effect of long correlation is exactly after ridge bar has detected, determine the position of ridge bar, so that charging motor starts to accelerate,
(3) effect of X5 is the detection of ridge bar position, coordinate the wide correlation of X2 and X3, the books and periodicals of bookbinding are needed to have different thickness, different-thickness will select dissimilar ridge bar, and dissimilar ridge bar width is different, if system prompt uses wide ridge bar, and user has taken narrow ridge bar, when inserting ridge bar, X5 and wide correlation can not detect ridge bar simultaneously, and system will point out user to change ridge bar;
(4) effect of X6 is the detection of clamping motor position, X6 is integrated with 2 optoelectronic switches, these 2 optoelectronic switches and physical construction coordinate, add the counting to stepper motor steps, the thickness being clamped the books and periodicals that are in sheets can be calculated relatively accurately, and complete the logic control of various bookbinding flow process;
X7 and X8 testing circuit:
(5) whether X7 and X8 is another transmitting and receiving sensor to infrared emission respectively, when their effect is the books and periodicals when gripping means grips will be bound, detects and be in place by bookbinding books and periodicals.If be not in place the bookbinding effect that can have a strong impact on less glue binding machine.As shown in Figure 9, the testing circuit of other sensor is similar for the testing circuit of X7 and X8.
Proper use of ridge bar for less glue binding machine bookbinding effect extremely important.Ridge bar scribbles the light and dark hot melt adhesive of striated, this design is exactly the problem detected to solve ridge bar.The striated hot melt adhesive thickness that ridge bar is coated with is different, and the roughness on surface is also different simultaneously, which results in light reflectance different, utilizes this point, less glue binding machine has been installed a reflective photoelectric sensor X4.When after insertion ridge bar, systems axiol-ogy opens ridge bar measuring ability to ridge bar, reflective photoelectric sensor X4 transmitting terminal just launches the light of specific wavelength, X4 receiving end is irradiated to by after the reflection of transparence hot melt adhesive, through the signal processing circuit be made up of amplifier, feed back to system, complete the detection of ridge bar.Ridge bar testing circuit is divided into radiating circuit and receiving circuit.
(1) radiating circuit
The essence of reflective photoelectric sensor X4 transmitting terminal is light emitting diode, and radiating circuit controls luminous intensity by control flow check through the electric current of light emitting diode.Radiating circuit as shown in Figure 10; after detection striped function is opened; system provides control signal; open reflective photoelectric sensor transmitting terminal, after transistor base provides signal, transistor collector and emitter conducting; electric current is regulated by regulating slide resistor R315; the effect of resistance R314 is Limited Current, prevents light emitting diode from burning because electric current is excessive, plays a protective role.
(2) receiving circuit
The essence of reflective photoelectric sensor X4 receiving end is photoresistance, radiating circuit controls the luminous intensity of light emitting diode, the illumination sent is mapped on the light and dark hot melt adhesive of striated that ridge bar is smeared, reflex to reflective photoelectric sensor X4 receiving end, receiving end photoresistance, according to the power of the light received, presents different resistance, and the signal received is through the process of receiving circuit, feed back to system, complete the detection of ridge bar.Receiving circuit as shown in figure 11, the TLV274 that is made up of 4 amplifiers of chip that signal transacting uses.The effect of first order amplifier is that electric current turns voltage, and input end is because the change of photoresistance resistance, and cause the change of electric current, reacting at output terminal is exactly that voltage constantly changes; The effect of second level amplifier is rectification superposition, and carry out rectification to the signal that first order amplifier exports, superposed by the output voltage of two amplifiers, the polar capacitor of output terminal has sluggish effect simultaneously; The effect of third level amplifier is voltage compare, the signal of in-phase input end is from first order amplifier, the signal of reverse input end is from second level amplifier, these two signals compare, third level amplifier is the voltage comparator with hysteresis loop, so just make output terminal more stable, the change of output terminal can not be caused because of the tiny fluctuation of input end.The function of ridge bar testing circuit is exactly whether detect the position of the ridge bar be inserted into correct, as long as detect that the reflectivity of light and dark striated hot melt adhesive and spacing meet the requirements, just thinks that its position is correct.
Relay is the logic control that cooperative mechanical system completes various less glue binding machine bookbinding flow process, what less glue binding machine adopted is 24V relay, because relay can not conducting for a long time, so need design control relay circuit, relay can not be allowed to generate heat because of long-time conducting.As shown in figure 12, build oscillator with ICM7555, and the cycle and dutycycle adjustable, then by light every control Darlington transistor TIP142, thus the conducting of pilot relay.
In the present embodiment, the Cyclone family chip that described FPGA driver element 2 adopts Altera company to produce, specifically can select model to be the chip of EP1C6T144C8N.The feature of Cyclone family chip is low-power consumption, low cost and interface function are enriched, and adds the cooperation of peripheral circuit, well can complete the control of stepper motor.
As shown in figure 13, described constant current subdivision driver element 9 comprises level shifting circuit 91, first photoelectric isolating circuit 92, DAC-circuit 93, voltage comparator circuit 94, filter amplification circuit 95, second photoelectric isolating circuit 96, and be respectively used to drive clamping motor 10a, the first driving chip 97a of charging motor 10b and mucilage binding motor 10c, second driving chip 97b, 3rd driving chip 97c, the I/O mouth voltage of FPGA driver element 2 is 3.3V, the subsequent conditioning circuit voltage of constant current subdivision driver element 9 is 5V, the signal of 3.3V is first converted to the signal of 5V by level shifting circuit 91, strengthen the driving force of FPGA simultaneously, can subsequent conditioning circuit be driven, and by the first photoelectric isolating circuit 92 make front end and load completely isolated, the security of accentuator, reduce the interference of voltage simultaneously, simplify the design of circuit, first driving chip 97a of stepper motor, second driving chip 97b, that the 3rd driving chip 97c adopts is L298N, constant current subdivision drives can reduce step angle, alleviate motor oscillating, reduce system noise, make motor even running.Driving for realizing constant current subdivision, making biphase current by sine and cosine rule even variation.Sine and cosine numerical tabular is stored in advance in FPGA driver element 1, then analog voltage is converted to by DAC circuit 93, the feedback current of each stepper motor two phase winding becomes feedback voltage through detecting resistance, then through filter amplification circuit 95, filter amplification circuit 95 is the high frequency noises in order to filtering motor itself produces, amplify feedback voltage simultaneously, feedback voltage after amplification again by voltage comparator circuit compared with changed analog voltage, comparative result feeds back to FPGA driver element 2 by the second photoelectric isolating circuit 96, thus realize the constant current subdivision of stepper motor.
Above-described embodiment and graphic and non-limiting product form of the present utility model and style, any person of an ordinary skill in the technical field, to its suitable change done or modification, all should be considered as not departing from patent category of the present utility model.
Claims (6)
1. a less glue binding machine control system, it is characterized in that: comprise ARM main control unit, described ARM main control unit is connected with touch-screen with FPGA driver element, infrared sensor, optoelectronic switch, relay, heat block, thermopair respectively, and described FPGA driver element is connected with mucilage binding motor with clamping motor, charging motor respectively by constant current subdivision driver element; Wherein, described ARM main control unit comprises main control chip, and the power circuit be connected with main control chip, clock circuit, reset circuit, parallel port display interface, Parallel Interface Communication interface, JTAG debugging interface, AccessPort interface, temperature control circuit, sensor detection circuit, ridge bar testing circuit and control relay circuit.
2. a kind of less glue binding machine control system as claimed in claim 1, is characterized in that: the STM32 family chip that described main control chip adopts ST company to produce.
3. a kind of less glue binding machine control system as claimed in claim 2, is characterized in that: described main control chip adopts 32 based on the STM32F103ZET6 of Cortex-M3 kernel.
4. a kind of less glue binding machine control system as claimed in claim 1, is characterized in that: the Cyclone family chip that described FPGA driver element adopts Altera company to produce.
5. a kind of less glue binding machine control system as claimed in claim 4, is characterized in that: described FPGA driver element selects model to be the chip of EP1C6T144C8N.
6. a kind of less glue binding machine control system as claimed in claim 1, it is characterized in that: described constant current subdivision driver element comprises level shifting circuit, first photoelectric isolating circuit, DAC-circuit, voltage comparator circuit, filter amplification circuit, second photoelectric isolating circuit, and be respectively used to drive clamping motor, 3 driving chip of charging motor and mucilage binding motor, the signal of the 3.3V of the I/O mouth of FPGA driver element is first converted to the signal of 5V by level shifting circuit, and by the first photoelectric isolating circuit by front end and load completely isolated, be kept at the sine and cosine numerical value in FPGA driver element in advance, analog voltage is become by DAC circuit conversion, the feedback current of stepper motor two phase winding becomes feedback voltage through detecting resistance, then through filter amplification circuit, feedback voltage after amplification again by voltage comparator circuit compared with changed analog voltage, comparative result feeds back to FPGA driver element by the second photoelectric isolating circuit, thus realize the constant current subdivision of stepper motor.
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| CN201420556391.0U CN204166319U (en) | 2014-09-26 | 2014-09-26 | A kind of less glue binding machine control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777862A (en) * | 2015-04-10 | 2015-07-15 | 张立 | Voltage current frequency modulator of wireless bonding machine |
| CN108051101A (en) * | 2017-12-06 | 2018-05-18 | 华中科技大学 | A kind of engine temperature test system based on STM32 microcontrollers |
-
2014
- 2014-09-26 CN CN201420556391.0U patent/CN204166319U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777862A (en) * | 2015-04-10 | 2015-07-15 | 张立 | Voltage current frequency modulator of wireless bonding machine |
| CN108051101A (en) * | 2017-12-06 | 2018-05-18 | 华中科技大学 | A kind of engine temperature test system based on STM32 microcontrollers |
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