CN207255436U - The controller of gas shielded arc welding power supply inverter - Google Patents
The controller of gas shielded arc welding power supply inverter Download PDFInfo
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- CN207255436U CN207255436U CN201720840988.1U CN201720840988U CN207255436U CN 207255436 U CN207255436 U CN 207255436U CN 201720840988 U CN201720840988 U CN 201720840988U CN 207255436 U CN207255436 U CN 207255436U
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Abstract
It the utility model is related to gas shielded arc welding technical field; in particular to the controller of gas shielded arc welding power supply inverter, including Digital Signal Processing DSP, be connected with PC machine communication module, shown for welding current and voltage serial D/A modules, the parallel D/A module for setting weldingvoltage and electric current, the analog signal of welding current and voltage is inputted to the first A/D modules of DSP and inputs arc welding gun switch and arcing signals to the 2nd A/D modules of DSP.Controller described in the utility model possesses faster processing speed and more preferably computing capability, and dynamic responding speed faster, there is preferable versatility, modularization and dilatancy.
Description
Technical field
Gas shielded arc welding technical field is the utility model is related to, in particular to the control of gas shielded arc welding power supply inverter
Device.
Background technology
Gas shielded arc welding be in gas atmosphere, using electric arc be energy to by weldering metal carry out high honour weldering welding side
Method, also abbreviation electrogas arc welding.Gas shielded arc welding progressively grows up in manual electric arc welding on the basis of, particularly
In last century the forties, due to advancing by leaps and bounds for science and technology and developing rapidly for modern industry, various new metal materials
Increasingly higher demands are proposed to welding technique and quality with new product structure, more promote the universal of electrogas process
Promote and develop.By constantly putting into practice, using the low-alloy structural steel welding wire of the deoxidant elements such as silicon, manganese, and go deep into grasping gas
The metallurgy characteristic and Process Law of weldering are protected, has substantially solved the problems such as oxidation, stomata are with splashing, so as to ensure that gas is protected
Protect the welding quality of weldering.Therefore gas shielded arc welding is from after early fifties are applied in welding production, and pole is by the joyous of countries in the world
Meet and actively promote the use of, become welding carbon steel, the most frequently used welding method of low-alloy structural steel member so far, there is height
Effect, energy saving, inexpensive superiority.
With the development of Power Electronic Technique, huge differentiation occurs for gas shielded arc welding power supply, is mainly welded using rotary DC
Machine.At the beginning of 60, there is transformer tapping formula diode rectification welding machine and magnetic puts formula metal rectifier welding set.The late sixties, and go out
Existing thyristor rectification welder.This half control formula welding machine realizes external characteristics control, compensation of line voltage and overload protection etc., so as to improve
Processing performance, has effectively promoted the development of welding technique.The introducing of inversion transformation technique, especially with MOS, GTR, IGBT etc.
High frequency, fully-controlled type device for power switching so that gas shielded welding power-supply produces essence change.But conventional contravariant weldering
The control system for connecing power supply is built by analog electronics, by arc voltage sensor sample, obtains welding current, voltage etc.
Parameter, goes control PWM module, so as to control the break-make of power device to reach control by voltage comparator, then by simulation PI
The ON time of high frequency transformer, realizes the purpose of dynamic welding process.Whole control circuit is completed by analog device entirely, device
Parameter discrete is big, and control parameter commissioning is inconvenient, and function is single, and welding quality is not high.
Utility model content
The purpose of this utility model seeks to the controller of the gas shielded arc welding power supply inverter provided, it possesses faster
Processing speed and more preferably computing capability, dynamic responding speed faster, there is preferable versatility, modularization and dilatancy.
To achieve the above object, the controller of the gas shielded arc welding power supply inverter designed by the utility model, including
Digital Signal Processing DSP, the communication module being connected with PC machine, the serial D/A modules shown for welding current and voltage, be used for
Set the parallel D/A modules of weldingvoltage and electric current, input the analog signal of welding current and voltage to the first A/D of DSP
Module and arc welding gun switch and arcing signals are inputted to the 2nd A/D modules of DSP.
Further, the DSP respectively with communication module, serial D/A modules, parallel D/A modules, the first A/D modules and
2nd A/D modules are connected.
Further, the communication module is connected with the SCI interfaces of DSP, and the SPI of the serial D/A modules and DSP connect
Mouth is connected, and parallel D/A modules, the first A/D modules and the 2nd A/D modules are connected on the different I/O interfaces of DSP.
Yet further, the controller further includes the jtag interface being connected with host computer, the jtag interface and DSP
UART interface is connected.
Also further, the controller further includes level shifting circuit and power-switching circuit, the level conversion electricity
Road and power-switching circuit are connected with DSP respectively.
Further, the controller further includes data storage and program storage.
Preferably, EMIF interfaces different from DSP's are connected respectively for the data storage and program storage.
In the above-mentioned technical solutions, the DSP is TMS320LF2812 chips, and the communication module is MAX3232 level
Conversion chip, the serial D/A modules are TLV5619 chips, and the parallel D/A modules are TLV5608 chips.
In the above-mentioned technical solutions, the power-switching circuit is TPS76733 chips.
In the above-mentioned technical solutions, the data storage is CY7C1021CV33SRAM chips, described program memory
For SST39VF512FLASH rom chips.
In the utility model, the core devices using DSP as the controller.Arc welding gun switch and arcing signals pass through
Two A/D modules enter the I/O interfaces of DSP, and various setting signals and voltage, current signal are acquired by the first A/D modules.
Since solder shorts and over-current signal occur at random, it is proper to handle them using external interrupt, so both
The occurrence of can ensureing that system loading is unlikely to excessive, and solder shorts and overcurrent protection can be timely responded to.Welding electricity
The control of pressure, electric current by parallel D/A modules by being completed.The display of welding current and voltage is realized by serial D/A modules.DSP
Communication with PC machine is completed by communication module by level conversion.Therefore controller described in the utility model possesses faster place
Manage speed and more preferably computing capability, dynamic responding speed faster, there is preferable versatility, modularization and dilatancy.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
In figure：DSP1, communication module 2, serial D/A modules 3, parallel D/A modules 4, the first A/D modules 5, the 2nd A/D moulds
Block 6, jtag interface 7, level shifting circuit 8, power-switching circuit 9,.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
As shown in Figure 1, the controller of gas shielded arc welding power supply inverter described in the utility model, including digital signal
Processing DSP1, be connected with PC machine communication module 2, shown for welding current and voltage serial D/A modules 3, for setting
The parallel D/A modules 4 of weldingvoltage and electric current, input the analog signal of welding current and voltage to the first A/D moulds of DSP1
Block 5 and arc welding gun switch, arcing signals are inputted to the 2nd A/D modules 6 of DSP1, the jtag interface 7, the level that are connected with host computer
Conversion circuit 8 and power-switching circuit 9, data storage 10 and program storage 11.
DSP1 respectively with communication module 2, serial D/A modules 3, parallel D/A modules 4, the first A/D modules 5 and the 2nd A/D moulds
Block 6 is connected.Communication module 2 is connected with the SCI interfaces of DSP1, and serial D/A modules 3 are connected with the SPI interface of DSP1, parallel D/A
Module 4, the first A/D modules 5 and the 2nd A/D modules 6 are connected on the different I/O interfaces of DSP1；Jtag interface 7 and DSP1
UART interface be connected, level shifting circuit 8 and power-switching circuit 9 are connected with DSP1 respectively；Data storage 10 and program
EMIF interfaces different from DSP1's are connected memory 11 respectively.
DSP1 is TMS320LF2812 chips, and communication module 2 is MAX3232 electrical level transferring chips, and serial D/A modules 3 are
TLV5619 chips, parallel D/A modules 4 are TLV5608 chips.Data storage 10 is CY7C1021CV33SRAM chips, program
Memory 11 is SST39VF512FLASH rom chips.Power-switching circuit 9 is TPS76733 chips.
In the utility model, a series of function elements are extended out around TMS320LF2812 chips, so as at utmost sharp
With its function.Since TMS320LF2812 chips require 3.3V power supplies, the low voltage difference conversion chip TPS76733 of TI is used on plate
Externally input 5V is transformed into 3.3V.Jtag interface 7 is the marginal testing port of standard, can easily realize computer
On-line debugging.The random access memory ram extended out is as data storage 7, in order to facilitate program debugging, while extend out
Flash memory FLASH can be stored with some cured data forms etc. as program storage 8.MAX3232 electrical level transferring chips are used
In realizing the communication between DSP and PC machine.Serial and concurrent A/D modules and the first and second D/A modules are used for analog quantity
Output and input.In addition consider that quite a few circuit is still powered using 5V till now, in order to enable DSP with using 5V logics
The digital circuit of level communicates, and devises the level shifting circuit 8 of 3.3V-5V.
Core devices using DSP1 as the controller.Arc welding gun switch and arcing signals are entered by the 2nd A/D modules 6
To the I/O interfaces of DSP1, various setting signals and voltage, current signal are acquired by the first A/D modules 5.It is short due to welding
Road and over-current signal occur at random, therefore it is proper using external interrupt to handle them, so can both ensure be
System load is unlikely to excessive, and the occurrence of solder shorts and overcurrent protection can be timely responded to.The control of weldingvoltage, electric current
System by parallel D/A modules 4 by being completed.The display of welding current and voltage is realized by serial D/A modules 3.DSP and PC machine it is logical
Letter is completed by communication module by level conversion.
First A/D modules 5 are that DSP1 is used for gathering analog signal, and the quality of its forward path design is directly related to A/
D sampling precisions, accordingly also influence the precision of follow-up signal processing.Adopted built in the analog-to-digital conversion module band of TMS320LF2812
10 analog-to-digital conversion ADC of sample/holding (S/H), possess 16 analog input channels (ADCIN0~ADCIN15).Auto-sequencing
Ability, once can perform " automatic conversion " of most 16 passages, and can all be selected by programming per the passage of secondary conversion
Select.Built-in checking mode and self-testing mode.In addition TMS320LF2812 can also be by adjusting sampling/holding module of ADC
To adapt to the change of input signal impedance.
In order to facilitate the communication and debugging of DSP1 and PC machine, carried out using the serial connection of TMS320LF2812 and PC machine
Communication.It is different from the TTL standards of DSP1 serial ports but the logic level of PC machine serial ports is using RS232 standards, so not
It can be directly connected to, this is solved the problems, such as using MAX3232 electrical level transferring chips for this.
Due to the D/A modular converters not integrated inside TMS320LF2812, two panels D/A is extended out in the design and has been turned
Change the mold block：Serial D/A modules 3 and parallel D/A modules 4.Serial D/A modules 3 are TLV5619 chips, and parallel D/A modules 4 are
TLV5608 chips.TLV5619 is the COMS 12 parallel-by-bit interface digital analog converters of high speed of TI companies of Texas Instruments production,
For providing the set-point of weldingvoltage and welding current to the source of welding current, due to being parallel interface, speed, can meet
Requirement of the system to real-time.TLV5619 is the serial 8 passage digital analog converter of TI companies of Texas Instruments production, it is logical
SPI interface is crossed to connect with DSP1.It is mainly used for the wire feeding motor speed preset not high to conversion speed requirements, welding current, electricity
The purposes such as pressure display.
TMS320LF2812 is internally integrated the RAM of the FLASH and 2.5K words of 32K words, and since debugging needs, the system needs to expand
Fill external RAM.FLASH inside TMS320LF2812 can be used as program storage, but the development phase uses FLASH as journey
Sequence memory is extremely inconvenient, because the modification per secondary program is required for being purged FLASH, wipes and programming operation, and
Carry out that Hardware Breakpoint can only be set during CCS debugging, therefore consider from debugging angle, program RAM should be expanded.For convenience of debugging and program
Exploitation, the external bus interface EMIF growth datas memory 7 and program storage 8 that the design passes through TMS320LF2812.Number
It is CY7C1021CV33SRAM chips according to memory 7, program storage 8 is SST39VF512FLASH rom chips.
Controller described in the utility model possesses faster processing speed and more preferably computing capability, dynamic responding speed
Faster, there are preferable versatility, modularization and dilatancy.
Above example is only the more representational example of the utility model.Obviously, the utility model is not limited to above-mentioned reality
Example is applied, there can also be many deformations.Every technical spirit according to the present invention to any simple modification made for any of the above embodiments,
Equivalent variations and modification, are considered as belonging to the scope of protection of the utility model.
Claims (10)
1. a kind of controller of gas shielded arc welding power supply inverter, it is characterised in that including Digital Signal Processing DSP（1）And
The communication module that PC machine is connected（2）, serial D/A modules for showing for welding current and voltage（3）, for setting weldingvoltage
With the parallel D/A modules of electric current（4）, the analog signal of welding current and voltage inputted to DSP（1）The first A/D modules（5）
Inputted with by arc welding gun switch and arcing signals to DSP（1）The 2nd A/D modules（6）.
2. the controller of gas shielded arc welding power supply inverter according to claim 1, it is characterised in that the DSP（1）
Respectively with communication module（2）, serial D/A modules（3）, parallel D/A modules（4）, the first A/D modules（5）With the 2nd A/D modules
（6）It is connected.
3. the controller of gas shielded arc welding power supply inverter according to claim 2, it is characterised in that the communication mould
Block（2）With DSP（1）SCI interfaces be connected, the serial D/A modules（3）With DSP（1）SPI interface be connected, the parallel D/
A modules（4）, the first A/D modules（5）With the 2nd A/D modules（6）It is connected to DSP（1）Different I/O interfaces on.
4. the controller of gas shielded arc welding power supply inverter according to claim 1, it is characterised in that the controller
Further include the jtag interface being connected with host computer（7）, the jtag interface（7）With DSP（1）UART interface be connected.
5. the controller of gas shielded arc welding power supply inverter according to claim 1, it is characterised in that the controller
Further include level shifting circuit（8）And power-switching circuit（9）, the level shifting circuit（8）And power-switching circuit（9）Point
Not and DSP（1）It is connected.
6. the controller of gas shielded arc welding power supply inverter according to claim 1, it is characterised in that the controller
Further include data storage（10）And program storage（11）.
7. the controller of gas shielded arc welding power supply inverter according to claim 6, it is characterised in that the data are deposited
Reservoir（10）And program storage（11）Respectively with DSP（1）Different EMIF interfaces be connected.
8. the controller of gas shielded arc welding power supply inverter according to any one of claim 1 to 7, its feature exist
In the DSP（1）For TMS320LF2812 chips, the communication module（2）It is described serial for MAX3232 electrical level transferring chips
D/A modules（3）For TLV5619 chips, the parallel D/A modules（4）For TLV5608 chips.
9. the controller of gas shielded arc welding power supply inverter according to claim 5, it is characterised in that the power supply turns
Change circuit（9）For TPS76733 chips.
10. the controller of the gas shielded arc welding power supply inverter according to claim 6 or 7, it is characterised in that the number
According to memory（10）For CY7C1021CV33 sram chips, described program memory（11）For SST39VF512 FLASH ROM
Chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720840988.1U CN207255436U (en) | 2017-07-12 | 2017-07-12 | The controller of gas shielded arc welding power supply inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720840988.1U CN207255436U (en) | 2017-07-12 | 2017-07-12 | The controller of gas shielded arc welding power supply inverter |
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| Publication Number | Publication Date |
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| CN207255436U true CN207255436U (en) | 2018-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111992850A (en) * | 2020-08-28 | 2020-11-27 | 北京博清科技有限公司 | Welding control equipment and welding system |
-
2017
- 2017-07-12 CN CN201720840988.1U patent/CN207255436U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111992850A (en) * | 2020-08-28 | 2020-11-27 | 北京博清科技有限公司 | Welding control equipment and welding system |
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