CN201749450U - Touch screen man-machine interface system of digital arc welding power supply - Google Patents

Touch screen man-machine interface system of digital arc welding power supply Download PDF

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Publication number
CN201749450U
CN201749450U CN201020275674XU CN201020275674U CN201749450U CN 201749450 U CN201749450 U CN 201749450U CN 201020275674X U CN201020275674X U CN 201020275674XU CN 201020275674 U CN201020275674 U CN 201020275674U CN 201749450 U CN201749450 U CN 201749450U
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touch screen
main control
control chip
computer interface
power supply
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薛家祥
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Guangdong East Power Co Ltd
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薛家祥
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Abstract

The utility model relates to the technical field of touch screen man-machine interfaces, in particular to a touch screen man-machine interface system of a digital arc welding power supply, and comprises a touch screen man-machine interface module, a main control chip and a serial port circuit; the main control chip is provided with a general purpose input/output (GPIO) interface, a liquid crystal display (LCD) controller and an analog to digital converter(ADC); the touch screen man-machine interface module comprises a resistance-type touch screen and an LCD which are matched; the resistance-type touch screen is provided with a touch screen detection device; the GPIO interface of the main control chip is connected with a main circuit of a welding power supply through the serial port circuit; the LCD controller of the main control chip is connected with the LCD; and the ADC of the main control chip is connected with the touch screen detection device of the resistance-type touch screen. The touch screen man-machine interface system of the digital arc welding power supply has the advantages of simpler panel interface, smaller size, high portability, good compatibility, a large amount of displayed information and sufficient display brightness, and is friendlier and more powerful.

Description

The touch screen human-computer interface system of digitized arc welding power supply
Technical field:
The utility model relates to the touch screen human-computer interface technical field, relates in particular to the touch screen human-computer interface system of digitized arc welding power supply.
Background technology:
Development along with welding technology, the appearance of technologies such as especially aluminium alloy welding, mariages pulse MIG/MAG welding, arc brazing, low-yield arc-welding, plasma welding and constantly development, problems such as the energy control that Arc Welding Power faced, wire feed control are developing to the direction of precision, face simultaneously higher system stability problem again, complicated can't the avoidance of source of welding current control.In addition, source of welding current work under bad environment, load variations are violent, and the source of welding current is not only the energy feed unit of welding technology, and it is also bearing the function that welding procedure is detected, judges, controls, and directly determines welding quality.Therefore, the development of digitized arc welding power supply is inevitable and irreversible.
Abroad, with Austrian FRONIUS, German CLOOS, Japanese OTC is the well-known in the world welding gear company of representative, a series of digitizing welder systems that have expert database have all been developed, the fetch long price of these digitizing welder systems, one of its gordian technique are to realize the digitizing man-machine interface.At present, domestic digitizing welding machine is in development, and the companies such as Tangshan Panasonic, Shanxi nebula, Beijing epoch, the big Ao Tai in mountain that mainly contain are in exploitation, and part is released digitizing welding machine product.No matter it is domestic still external, the man-machine interface of existing digitizing welding machine product adopts the mode of charactron and button mostly, the parameter input and the demonstration great majority that are its source of welding current adopt charactrons, LED lamp and buttons to realize, portioned product adopts monochromatic liquid crystal display cooperation button operation mode.These Input/Output Devices are controlled a large amount of I/O pin of needs, and this interface that just causes panel is huger than complexity and volume, and simultaneously, the portability between different type of machines is not high, poor compatibility.In addition, the quantity of information that the charactron mode shows is limited, and the display brightness of single color LCD screen is not enough, is difficult to satisfy the request for utilization under strong surround lighting of welding occasion and the arc light interference.Therefore, for the client provides a cover friendly more and powerful human-computer interface system, will become the inexorable trend of digitizing field of power supplies development.
Touch screen technology will certainly be applied to the human-computer interface system of digitized arc welding power supply along with the development of digitizing field of power supplies as comparatively friendly in each application and powerful human-computer interaction technology.Yet, existing touch screen correction method such as triplet, four point calibration methods, five point calibration methods etc., the human-computer interface system that all can't satisfy digitized arc welding power supply well is fast for correction rate, accurate positioning and the simple requirement of algorithm.
The utility model content:
The purpose of this utility model is at the deficiencies in the prior art, a kind of touch screen human-computer interface system of digitized arc welding power supply is provided, the interface of its panel is simpler, volume is less, portable height between different type of machines, compatible good, the display message amount is big, and display brightness is enough, and friendly and powerful more.
For achieving the above object, the utility model is achieved through the following technical solutions:
The touch screen human-computer interface system of digitized arc welding power supply, it comprises touch screen human-computer interface module, main control chip and serial port circuit, described main control chip is provided with GPIO interface, lcd controller and ADC analog to digital converter, described touch screen human-computer interface module comprises resistive touch screen and the LCD display that is used, and resistive touch screen is provided with touch screen detection device; The GPIO interface of described main control chip is connected with source of welding current main circuit by serial port circuit, and the lcd controller of main control chip connects LCD display, and the ADC analog to digital converter of main control chip connects the touch screen detection device of resistive touch screen.
Wherein, described resistive touch screen is a four-wire resistance type touch screen.
Wherein, this touch screen human-computer interface system also comprises usb circuit, and described main control chip is provided with the USB module, and the USB module of main control chip connects described usb circuit.
Wherein, this touch screen human-computer interface system also comprises hummer, and described main control chip is provided with the PWM driver module, and the PWM driver module of main control chip connects described hummer.
Wherein, this touch screen human-computer interface system also comprises the SD card interface circuit, and the GPIO interface of described main control chip connects described SD card interface circuit.
Wherein, described main control chip is provided with the 100M ethernet port.
Wherein, described source of welding current main circuit comprises dsp processor TMS320F2808, and the GPIO interface of described main control chip connects dsp processor TMS320F2808 by serial port circuit.
Wherein, the model of described main control chip is ARM9-S3C2440.
The utility model beneficial effect is:
The touch screen human-computer interface system of digitized arc welding power supply described in the utility model, comprise touch screen human-computer interface module, main control chip and serial port circuit, main control chip is provided with GPIO interface, lcd controller and ADC analog to digital converter, the touch screen human-computer interface module comprises resistive touch screen and the LCD display that is used, and resistive touch screen is provided with touch screen detection device; The GPIO interface of main control chip is connected with source of welding current main circuit by serial port circuit, and the lcd controller of main control chip connects LCD display, and the ADC analog to digital converter of main control chip connects the touch screen detection device of resistive touch screen.The touch screen human-computer interface system of this digitized arc welding power supply is used above-mentioned touch screen correction method when work, finish correction apace, and the reflection point touches operation exactly.Operation interface by resistive touch screen, can control the function mode of welding machine easily, and can momentarily observe current running status by LCD display, the structure of panel is simpler simultaneously, volume is less, the portable height between different type of machines, compatible good, and the display message amount is big, display brightness is enough, and friendly and powerful more.
Description of drawings:
Fig. 1 adopts the correction chart of least square method for the utility model;
Fig. 2 is the theory diagram of the touch screen human-computer interface system of digitized arc welding power supply of the present utility model;
Fig. 3 is the schematic diagram of four-wire resistance type touch screen of the present utility model;
Fig. 4 is the synoptic diagram of four-wire resistance type touch screen of the present utility model when two-layer contacting;
Fig. 5-1 for main control chip of the present utility model be ARM9-S3C2440 circuit diagram wherein a part;
Fig. 5-2 is circuit diagram another part of ARM9-S3C2440 for main control chip of the present utility model;
Fig. 6 is the circuit theory diagrams of serial port circuit of the present utility model;
Fig. 7-1 is that the circuit theory diagrams of 100M ethernet port of the present utility model are wherein a part of;
Fig. 7-2 is circuit theory diagrams another part of 100M ethernet port of the present utility model;
Fig. 8 is a course of work man-machine interaction software flow pattern of the present utility model;
Fig. 9 is provided with the interface synoptic diagram for the main interface of operation and the parameter of touch screen human-computer interface system of the present utility model;
Figure 10 is that the welding method of touch screen human-computer interface system of the present utility model is selected the interface synoptic diagram;
Figure 11 is that the welding material of touch screen human-computer interface system of the present utility model is selected the interface synoptic diagram;
Figure 12 is that the gage of wire of touch screen human-computer interface system of the present utility model is selected the interface synoptic diagram;
Figure 13 is that the bond pattern of touch screen human-computer interface system of the present utility model is selected the interface synoptic diagram.
Embodiment:
Below in conjunction with drawings and Examples the utility model is further described:
As shown in figure 1 to figure 13, the touch screen human-computer interface system of digitized arc welding power supply, it comprises touch screen human-computer interface module 2, main control chip 1 and serial port circuit 3, described main control chip 1 is provided with GPIO interface 10 (General-Purpose IO ports, universal I/O port just), lcd controller 15 and ADC analog to digital converter 14, described touch screen human-computer interface module 2 comprises resistive touch screen 21 and the LCD display 20 that is used, and resistive touch screen 21 is provided with touch screen detection device 22; The GPIO interface 10 of described main control chip 1 is connected with source of welding current main circuit 4 by serial port circuit 3, the lcd controller 15 of main control chip 1 connects LCD display 20, and the ADC analog to digital converter 14 of main control chip 1 connects the touch screen detection device 22 of resistive touch screen 21.Wherein, the model of described main control chip 1 is ARM9-S3C2440, described resistive touch screen 21 is a four-wire resistance type touch screen, described source of welding current main circuit 4 comprises dsp processor TMS320F2808, and the GPIO interface 10 of described main control chip 1 connects dsp processor TMS320F2808 by serial port circuit 3.Resistive touch screen 21 and LCD display 20 are 7 inches liquid crystal displays, and this human-computer interface system can intuitively at length show various failure messages.
Further, this touch screen human-computer interface system also comprises usb circuit 7, and described main control chip 1 is provided with USB module 12, and the USB module 12 of main control chip 1 connects described usb circuit 7.Further, this touch screen human-computer interface system also comprises hummer 5, and described main control chip 1 is provided with PWM driver module 11, and the PWM driver module 11 of main control chip 1 connects described hummer 5.Further, this touch screen human-computer interface system also comprises SD card interface circuit 6, and the GPIO interface 10 of described main control chip 1 connects described SD card interface circuit 6.
As shown in Figure 2, touch screen human-computer interface module 2 comprises resistive touch screen 21 and the LCD display 20 that is used, and resistive touch screen 21 is installed in the front end of LCD display 20, and resistive touch screen 21 is provided with touch screen detection device 22.When being put, resistive touch screen 21 touches when operation, produce pressure in screen surface, thereby 21 liang of conductive layers of resistive touch screen are connected, in case touch screen detection device 22 monitors user's touch location, just the positional information that obtains is sent into 8 tunnel 10 built-in ADC analog to digital converters 14 of ARM9-S3C2440, and these signals are handled, convert voltage signal to digital signal, the ARM9-S3C2440 that delivers in the mode of interrupting calculates contact coordinate simultaneously.After waiting for a period of time, call the function that obtains the touch-screen position, the function of this function is, at first obtain the coordinate figure of x axle from 14 1 passages of built-in ADC analog to digital converter, and then obtain the coordinate figure of y axle from another passage, judge and return the touch point coordinate figure whether in effective range, if in effective range, then deliver to ARM9-S3C2440, thereby control LCD display 20 shows with interrupt mode.When breaking down, except LCD display 20 shows the fault-signal, the also alarm that can send different frequency and volume by the hummer 5 that control PWM driver module 11 drives, thus different faults is reacted.Simultaneously, but various operations and operation information under the SD card real time record that SD card interface circuit 6 connects, so that the operator in time investigates the reason that produces fault.In addition, the usb circuit 7 that this system provides, its USB interface can be changed or ROMPaq whenever and wherever possible for operating personnel.
Be illustrated in figure 3 as resistive touch screen 21 of the present utility model and be the schematic diagram of four-wire resistance type touch screen, x+, y+, x-, y-represent four lines of four-wire resistance type touch screen among the figure.Four-wire resistance type touch screen comprises two resistive layers, and wherein one deck respectively has a vertical busses in the left and right edges of screen, and another layer respectively has a horizontal bus at the bottom and the top of screen.In order to measure at the x direction of principal axis, the left side bus is biased to 0V, the right side bus is biased to VREF.Top or bottom bus are connected to ADC analog to digital converter 14, when top layer and bottom contact, can make one-shot measurement.In order to measure at the y direction of principal axis, the top bus is biased to VREF, the bottom bus is biased to 0V.With ADC analog to digital converter 14 input termination left side bus or right side buses, when contacting with bottom, can measure top layer voltage.For four-wire resistance type touch screen, optimal method of attachment is to be biased to the positive reference input of the bus interface ADC analog to digital converter 14 of VREF, and will be set to the negative reference input of the bus interface ADC analog to digital converter 14 of 0V.Figure 4 shows that the simplified model of four-wire resistance type touch screen when two-layer contacting, comprise stylus 8 among the figure, soft plastics sheet 91, metallic coating 90, insulation fulcrum 93 and cloche 92.
As Fig. 5-1, Fig. 5-2 and shown in Figure 6, represented the driving circuit structure of the touch screen human-computer interface system of digitized arc welding power supply described in the utility model.The main control chip 1 of this circuit is ARM9-S3C2440, it is a powerful of Samsung's release, the ARM9 embedded type CPU that power consumption is extremely low adopts the 3.3V power supply, by the communication of serial port circuit 3 realizations with the dsp processor TMS320F2808 of source of welding current main circuit 4.By the communication of serial port circuit 3, main control chip 1 can carry out the transmission of parameter with the source of welding current main circuit 4 of the master control board of digitizing welding machine, mainly comprises welding initiation parameter and status information, and fault alarm information.The electric current and the information of voltage of welding dynamic process because data volume is big, then directly by current-voltage sampling circuit giving master control board simultaneously, also deliver in the main control chip 1, after 14 conversions of ADC analog to digital converter, show.
The driving circuit of the touch screen human-computer interface system of above-mentioned digitized arc welding power supply also has the 100M ethernet port 13 of 100M DM9000 network interface card, can realize the networking operation of many digitizing welding machines, form the robotization welding production line, be depicted as the circuit theory of 100M ethernet port 13 as Fig. 7-1 and Fig. 7-2.By the pattern of extended network interface, can realize the interconnected of many digital welding power source, thereby constitute the robotization welding production line.By Ethernet, can collect, handle, feed back the various information of welding process in real time, and, production line be controlled by computing machine or other control systems.On the basis of Ethernet, digital welding power source can link with upper PC, and the status information of transmittance process is used for the management of production run.
Extremely shown in Figure 13 as Fig. 8, the touch screen human-computer interface system of digitized arc welding power supply described in the utility model, its Control Software module comprises the expert control system of multifunctional digital welding machine, welding expert system can be stored the optimised welding procedure scheme under multiple welding method, different welding material and the different technical parameters, gives full play to digitizing welding machine advantage easy and simple to handle.Adopt the picture and text form to realize the parameter setting of welding process on resistive touch screen 21 and LCD display 20, the selection of welding method, bond pattern, weld diameter and welding material makes the simple, intuitive of controlling of welding process.
Wherein, be illustrated in figure 8 as course of work man-machine interaction software flow pattern of the present utility model, the I/O mouth of self is at first carried out in start afterwards based on the control panel of ARM9-S3C2440, interrupt, the initialization of serial port circuit 3 and LCD display 20, man-machine interactive system based on ARM9-S3C2440 enters duty then, wait for that dsp processor TMS320F2808 sends the welding commencing signal to the man-machine interactive system based on ARM9-S3C2440 earlier, and welding parameter is obtained in reception, the beginning striking, enter normal welding process after the striking success, judge and the selection welding manner.If impulse welding, dsp processor TMS320F2808 controls first source of welding current master electricity output peak point current, second source of welding current main circuit 4 is exported background currents simultaneously, when first source of welding current main circuit, 4 output peak point currents finish to enter the background current output state, second source of welding current main circuit 4 enters the peak point current output state, so circulation guarantees that two power pulse output phases differ 180 ° repeatedly; If submerged arc welding, then dsp processor TMS320F2808 carries out constant current control respectively to two closed loops; If CO 2Weldering, then dsp processor TMS320F2808 carries out constant voltage control respectively to two closed loops.When welding finishes, enter simultaneously and receive the arc control program.After receiving the arc end, send the welding end signal to the man-machine interactive system based on ARM9-S3C2440, control system is got back to the state that wait is welded next time.
Wherein, as shown in Figure 9, for the main interface of the operation of touch screen human-computer interface system of the present utility model and parameter are provided with the interface synoptic diagram; Behind digitizing power supply opening initialization, system enters the main operation interface, comprise following submenu on the right side at main interface: welding parameter, welding method, gage of wire, welding material, bond pattern, point is got on the screen behind the corresponding zone of each menu, promptly enter each submenu, can carry out the operation of next step.In the left side at main interface is radio button, comprising: unusual, inspection gas, preservation, lock, call, monofilament/mariages, point is got above-mentioned button area and can be carried out welding technology motion action and welding parameter access.Zone line at main interface is welding current and voltage viewing area, and for the monofilament weldering, the window on the right shows electric current, the window display voltage on the left side; Window for Double Wire Welding the right and left can show electric current and voltage respectively by switching.
Wherein, as shown in figure 10, for the welding method of touch screen human-computer interface system of the present utility model is selected the interface synoptic diagram.Click " welding method " submenu, can enter the selection interface of welding method.In this submenu, can select " dipulse " weldering, be used for the welding of alloy in lightweight materials such as magnalium; Select " pulse MIC " weldering, can carry out carbon steel, alloy steel and stainless welding; Select " CO 2/ MAG " weldering, can weld common iron; Select " submerged arc welding ", can realize technology of automatic submerged arc.
Wherein, as shown in figure 11, for the welding material of touch screen human-computer interface system of the present utility model is selected the interface synoptic diagram.Under this submenu, can select common several welding materials, comprising: carbon steel, alloy steel, aluminium alloy and special material.According to selected welding material, call corresponding welding technology database, make its welding quality reach optimum condition.
Wherein, as shown in figure 12, for the gage of wire of touch screen human-computer interface system of the present utility model is selected the interface synoptic diagram.Under this submenu, can carry out the selection of gage of wire.Protect welder's skill for gas, the gage of wire that can select comprises: 0.8mm, 1.0mm, 1.2mm, 1.6mm, 2.0mm, can select for submerged welding process: 2.0mm, 2.4mm, 3.2mm, 4.0mm.For Double Wire Welding, the match selection of weld diameter.
Wherein, as shown in figure 13, for the bond pattern of touch screen human-computer interface system of the present utility model is selected the interface synoptic diagram.Bond pattern is selected.Under this submenu, can select: two steps, four steps, spot welding and four kinds of operator schemes of special welding.Wherein the operation of two steps is fit to the welding of short weld seam, when pressing arc welding gun switch, begins welding, unclamps arc welding gun switch and stops welding; FOUR EASY STEPS has auto-lock function, begins welding when for the first time pressing arc welding gun switch, unclamp arc welding gun switch after, continue to keep welding; After for the second time pressing arc welding gun switch, enter and receive the arc stage, unclamp arc welding gun switch again and promptly stop welding.
The touch screen human-computer interface system of digitized arc welding power supply described in the utility model in touching positioning control, is taked the touch screen correction method of secondary linear fit, the accurate location of having realized the bit manipulation of touch-screen point.Its touch screen correction method of implementing may further comprise the steps:
Steps A before the operation of system master routine, is carried out n point successively along resistive touch screen 21 diagonal line and is touched to operate and sample;
Main control chip 1 obtains n group touch-screen sample coordinate value (xdata by serial port circuit 3 feedbacks i, ydata i), wherein, xdata iThe x axle sample coordinate value of representing the resistive touch screen 21 of correspondence when the i time point touches operation, ydata iThe y axle sample coordinate value of representing the resistive touch screen 21 of correspondence when the i time point touches operation, i=1,2 ... n;
Main control chip 1 is according to n group touch-screen sample coordinate value (xdata i, ydata i) map out n group display screen sample coordinate value (x i, y i), wherein, x iRepresent that the i time point touches when operating according to xdata iThe x axle sample coordinate value of the LCD display 20 that maps out, y iRepresent that the i time point touches when operating according to ydata iThe y axle sample coordinate value of the LCD display 20 that maps out, i=1,2 ... n;
Step B sets sampling fit equation formula, and the employing least square method is finished the linear fit to sampling fit equation formula, asks for fitting parameter, and is specific as follows:
Step B1, the x axle sample coordinate value x of setting LCD display 20 iSampling fit equation formula, and the y axle sample coordinate value y of LCD display 20 iSampling fit equation formula:
x i *＝a×xdata i+b，
y i *＝c×ydata i+d，
Wherein, x i *The x axle sample coordinate value x of expression LCD display 20 iThe sampling match value, y i *The y axle sample coordinate value y of expression LCD display 20 iThe sampling match value, a, b, c, d are fitting parameter;
Step B2, according to principle of least square method,
Obtain x iWith x i *Residual values e Xi, e Xi=x i-x i *,
Make residual values e XiQuadratic sum Q be minimum, that is:
Make Q = Σ i = 1 n e xi 2 = Σ i = 1 n ( x i - x i * ) 2 = Σ i = 1 n ( x i - a × xdata i - b ) 2 Be minimum;
Obtain y iWith y i *Residual values f Yi, f Yi=y i-y i *,
Make residual values f YiQuadratic sum G be minimum, that is:
Make G = Σ i = 1 n f yi 2 = Σ i = 1 n ( y i - y i * ) 2 = Σ i = 1 n ( y i - c × ydata i - d ) 2 Be minimum;
Step B3,
Make that Q is that minimum should satisfy following two groups of null system of equations of partial derivative:
∂ Q ∂ a = 0 ,
∂ Q ∂ b = 0 ,
Ask for fitting parameter a value and b value according to system of equations;
Make that G is that minimum should satisfy following two groups of null system of equations of partial derivative:
∂ G ∂ c = 0 ,
∂ G ∂ d = 0 ,
Ask for fitting parameter c value and d value according to system of equations;
Step C, the operational system master routine;
The correction fit equation formula that is used to touch correction after the operation of initialization system master routine:
x *＝a×xdata+b，
y *＝c×ydata+d，
With a value, b value, c value, the above-mentioned correction fit equation of the corresponding substitution of d value formula, finish to touch and proofread and correct, thereby control LCD display 20 shows;
Wherein, after xdata represented system's master routine operation, main control chip 1 fed back the x axial coordinate value of the resistive touch screen 21 of the correspondence of obtaining by serial port circuit 3 when 21 of resistive touch screens touch operation; x *The x axial coordinate value of the LCD display 20 after expression is proofreaied and correct; After ydata represented system's master routine operation, main control chip 1 fed back the y axial coordinate value of the resistive touch screen 21 of the correspondence of obtaining by serial port circuit 3 when 21 of resistive touch screens touch operation; y *The y axial coordinate value of the LCD display 20 after expression is proofreaied and correct.
In sum, the touch screen human-computer interface system of digitized arc welding power supply described in the utility model, a kind of Control Welding Process picture and text touch-screen man-machine interactive system that show, that have higher manual dexterity and accuracy that is used for is provided, use the method that more accurate touch-screen is proofreaied and correct, can realize that dipulse weldering aluminium, monopulse MIG weldering, CO2/MAG gas are protected and welded, the debugging and the control of the multiple welding technique of submerged arc welding.The touch screen human-computer interface system of digitized arc welding power supply described in the utility model is by the operation interface of resistive touch screen 21, can control the function mode of welding machine easily, and can momentarily observe current running status by LCD display 20, and can observe current running status at any time, the structure of panel is simpler simultaneously, volume is less, simple to operate, portable height between different type of machines, compatible good, the display message amount is big, display brightness is enough, and friendly and powerful more.The upgrading of this system can directly be finished by upgrade software, can satisfy current demand to product diversification, low cost and short-life-cycle.
The above only is preferred embodiment of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.

Claims (8)

1. the touch screen human-computer interface system of digitized arc welding power supply, it is characterized in that: it comprises touch screen human-computer interface module, main control chip and serial port circuit, described main control chip is provided with GPIO interface, lcd controller and ADC analog to digital converter, described touch screen human-computer interface module comprises resistive touch screen and the LCD display that is used, and resistive touch screen is provided with touch screen detection device; The GPIO interface of described main control chip is connected with source of welding current main circuit by serial port circuit, and the lcd controller of main control chip connects LCD display, and the ADC analog to digital converter of main control chip connects the touch screen detection device of resistive touch screen.
2. the touch screen human-computer interface system of digitized arc welding power supply according to claim 1, it is characterized in that: described resistive touch screen is a four-wire resistance type touch screen.
3. the touch screen human-computer interface system of digitized arc welding power supply according to claim 1, it is characterized in that: this touch screen human-computer interface system also comprises usb circuit, described main control chip is provided with the USB module, and the USB module of main control chip connects described usb circuit.
4. the touch screen human-computer interface system of digitized arc welding power supply according to claim 1, it is characterized in that: this touch screen human-computer interface system also comprises hummer, described main control chip is provided with the PWM driver module, and the PWM driver module of main control chip connects described hummer.
5. the touch screen human-computer interface system of digitized arc welding power supply according to claim 1, it is characterized in that: this touch screen human-computer interface system also comprises the SD card interface circuit, the GPIO interface of described main control chip connects described SD card interface circuit.
6. the touch screen human-computer interface system of digitized arc welding power supply according to claim 1, it is characterized in that: described main control chip is provided with the 100M ethernet port.
7. the touch screen human-computer interface system of digitized arc welding power supply according to claim 1, it is characterized in that: described source of welding current main circuit comprises dsp processor TMS320F2808, and the GPIO interface of described main control chip connects dsp processor TMS320F2808 by serial port circuit.
8. according to the touch screen human-computer interface system of each described digitized arc welding power supply of claim 1 to 7, it is characterized in that: the model of described main control chip is ARM9-S3C2440.
CN201020275674XU 2010-07-29 2010-07-29 Touch screen man-machine interface system of digital arc welding power supply Expired - Fee Related CN201749450U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT512737A1 (en) * 2012-03-23 2013-10-15 Fronius Int Gmbh welding machine
CN103902071A (en) * 2012-12-24 2014-07-02 南宁市跃龙科技有限公司 Touch type man-machine interaction system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT512737A1 (en) * 2012-03-23 2013-10-15 Fronius Int Gmbh welding machine
AT512737B1 (en) * 2012-03-23 2016-06-15 Fronius Int Gmbh welding machine
CN103902071A (en) * 2012-12-24 2014-07-02 南宁市跃龙科技有限公司 Touch type man-machine interaction system

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