CN110125527A - Secondary high frequency welding resistance current signal processing system - Google Patents
Secondary high frequency welding resistance current signal processing system Download PDFInfo
- Publication number
- CN110125527A CN110125527A CN201910375006.XA CN201910375006A CN110125527A CN 110125527 A CN110125527 A CN 110125527A CN 201910375006 A CN201910375006 A CN 201910375006A CN 110125527 A CN110125527 A CN 110125527A
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- China
- Prior art keywords
- current
- chip microcontroller
- module
- filter module
- high frequency
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/24—Electric supply or control circuits therefor
- B23K11/25—Monitoring devices
- B23K11/252—Monitoring devices using digital means
- B23K11/257—Monitoring devices using digital means the measured parameter being an electrical current
Abstract
The present invention relates to mash welder current signal processing technology fields, more particularly to secondary high frequency welding resistance current signal processing system, it includes Rogowski coil and current detecting system, current detecting system includes working power and voltage transformation module, working state of system indicator light, current acquisition handles filter module, single-chip microcontroller and LCD display module, Rogowski coil is connect with the input terminal of current acquisition processing filter module, current acquisition handles the current acquisition processing filter module interface connection of the output end and single-chip microcontroller of filter module, the power interface of single-chip microcontroller is connect with working power and voltage transformation module, the indicator light interface of single-chip microcontroller is connect with working state of system indicator light, the display interface of single-chip microcontroller is connect with LCD display module, it includes filtering that current acquisition, which handles filter module, amplification and integrating circuit.System provided by the invention can eliminate the influence of loss of field, really reflect welding current and job stability is strong, measurement accuracy is high.
Description
Technical field
The present invention relates to the acquisition of welding binder current signal and processing technology field more particularly to secondary high frequency welding resistance current signals
Processing system.
Background technique
The operating current acquisition of resistance spot weld generally be divided to two kinds, and the signal acquisition of welding current is divided into primary detection and secondary
Two kinds of grade detection, secondary current is exactly the electric current for flowing through workpiece, due to the unstability and change frequency of resistance spot weld electric current
Than very fast, existing current detection means is difficult to eliminate the influence of loss of field, cannot really reflect the electric current of welding,
And job stability is poor, low measurement accuracy.
Summary of the invention
Technical problem to be solved by the invention is to provide the influences that can eliminate loss of field, really reflect welding
Electric current and the secondary high frequency welding resistance current signal processing system that job stability is strong, measurement accuracy is high.
The present invention is to be achieved by the following technical programs:
Secondary high frequency welding resistance current signal processing system comprising detect time Rogowski coil and electricity of high frequency welding binder current terminal
Detection system is flowed, fixed electrode is installed on the secondary high frequency welding binder and above fixed electrode and is driven by the cylinder upper and lower
The float electrode of movement, the Rogowski coil set are put in fixed electrode periphery, the current detecting system include working power and
Voltage transformation module, working state of system indicator light, current acquisition processing filter module, single-chip microcontroller and LCD display module, it is described
Rogowski coil is connect with the input terminal of current acquisition processing filter module, and current acquisition handles the output end and monolithic of filter module
The current acquisition processing filter module interface connection of machine, the power interface and working power and voltage transformation module of single-chip microcontroller connect
It connects, the indicator light interface of single-chip microcontroller is connect with working state of system indicator light, and the display interface and LCD display module of single-chip microcontroller connect
It connects, the current acquisition processing filter module includes filtering, amplification and integrating circuit.
Further, Rogowski coil is annular and is equipped with opening, and the opening is separately installed with connecing of being connected by a snap
Head.
Further, current acquisition processing filter module further includes that signal follows circuit and signal condition and protection circuit.
Beneficial effects of the present invention
Secondary high frequency welding resistance current signal processing system provided by the invention is turned the welding current of acquisition by Rogowski coil
It is melted into electromagnetic signal, filters mould at signal is sent to after voltage signal using the filtering sampling circuit conversion in current detecting system
Block will be filtered amplification, and being converted into amplified minor change voltage signal by integrating circuit can Chip Microcomputer A/D acquisition
Straight voltage signal, the influence of loss of field can be eliminated, really reflect the electric current of welding, and working performance is more steady
Fixed, the precision of measurement is relatively high.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is current detecting system structural schematic diagram；
Fig. 3 is current detecting system schematic illustration；
Fig. 4 is working power and voltage transformation module theory structure schematic diagram；
Fig. 5 is single-chip microcontroller STM32F107 chip pin schematic diagram；
Fig. 6 is signal condition and protection circuit schematic diagram；
Fig. 7 is that signal follows circuit diagram；
In figure: 1. high frequency welding binders, 2. fixed electrodes, 3. current detecting systems, 4. Rogowski coils, 5. float electrodes,
6. cylinder, 7. connectors.
Specific embodiment
Secondary high frequency welding binder welding current acquisition system comprising following steps:
Secondary high frequency welding resistance current signal processing system, as shown in Figure 1 comprising detect time 1 current terminal of high frequency welding binder
Rogowski coil 4 and current detecting system 3, fixed electrode 2 is installed on secondary high frequency welding binder and be located above fixed electrode and by
The float electrode 5 that the driving of cylinder 6 moves up and down, the Rogowski coil set are put in fixed electrode periphery, and Rogowski coil structure is simple,
The stable problem of electric power and heating power is not present in itself, and measurement range is wide, response band is wide, small in size, easy for installation, can be with
It will be converted to electromagnetic signal by the real-time current signal of spot welding electrode, the current detecting system is as shown in Fig. 2, include work
Make power supply and voltage transformation module, working state of system indicator light, current acquisition processing filter module, single-chip microcontroller and LCD are shown
Module, the Rogowski coil are connect with the input terminal of current acquisition processing filter module by shielding line, current acquisition processing filter
The current acquisition processing filter module interface connection of the output end and single-chip microcontroller of wave module, facilitates current acquisition to handle filter module
The electromagnetic signal of Rogowski coil is received, and is filtered, amplifies, integrating, AD analog-to-digital conversion, the power interface of single-chip microcontroller and work
Power supply and voltage transformation module connection, the indicator light interface of single-chip microcontroller are connect with working state of system indicator light, and single-chip microcontroller is shown
Show that interface is connect with LCD display module, the current acquisition processing filter module includes filtering, amplification and integrating circuit.
Further, Rogowski coil is annular and is equipped with opening, and the opening is separately installed with connecing of being connected by a snap
First 7, facilitate the dismounting of Rogowski coil.
Further, current acquisition processing filter module further includes that signal follows circuit and signal condition and protection circuit.
Specifically, the single-chip microcontroller is STM32F107 chip, current acquisition handles filter module and uses LM469 integrator
Chip.
When secondary high frequency welding resistance current signal processing system works, welding machine real work current signal is by electromagnetic principle sense
Should be into Rogowski coil, coil is transferred to corresponding current signal by shielding line the current acquisition in current detecting system
Filter module is handled, passes through sampling resistor R in filtering processing circuit firstSCurrent signal is converted into voltage signal, voltage letter
Enter integrating circuit number after signal follows circuit to be further processed, obtains corresponding voltage signal after integral, this electricity
Pressure signal is transmitted to single-chip microcontroller with protection circuit using signal condition and obtains corresponding welding machine operating current, and aobvious by single-chip microcontroller
Show on an lcd display.
In conclusion secondary high frequency welding resistance current signal processing system provided by the invention, can eliminate the shadow of loss of field
It rings, really reflects welding current and job stability is strong, measurement accuracy is high.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (3)
1. time high frequency welding resistance current signal processing system, it is characterised in that: including detecting time Roche of high frequency welding binder current terminal
Coil and current detecting system are equipped with fixed electrode on secondary high frequency welding binder and above fixed electrode and are driven by the cylinder
The float electrode of up and down motion, the Rogowski coil set are put in fixed electrode periphery, and the current detecting system includes work electricity
Source and voltage transformation module, working state of system indicator light, current acquisition processing filter module, single-chip microcontroller and LCD display module,
The input terminal of the Rogowski coil and current acquisition processing filter module connect, current acquisition handle filter module output end and
The current acquisition processing filter module interface connection of single-chip microcontroller, the power interface and working power and voltage transformation module of single-chip microcontroller
Connection, the indicator light interface of single-chip microcontroller are connect with working state of system indicator light, the display interface and LCD display module of single-chip microcontroller
Connection, the current acquisition processing filter module include filtering, amplification and integrating circuit.
2. secondary high frequency welding resistance current signal processing system according to claim 1, which is characterized in that the Rogowski coil is
Annular and it is equipped with opening, the opening is separately installed with the connector being connected by a snap.
3. secondary high frequency welding resistance current signal processing system according to claim 1, which is characterized in that current acquisition processing filter
Wave module further includes that signal follows circuit and signal condition and protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910375006.XA CN110125527A (en) | 2019-05-07 | 2019-05-07 | Secondary high frequency welding resistance current signal processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910375006.XA CN110125527A (en) | 2019-05-07 | 2019-05-07 | Secondary high frequency welding resistance current signal processing system |
Publications (1)
| Publication Number | Publication Date |
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| CN110125527A true CN110125527A (en) | 2019-08-16 |
Family
ID=67576586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910375006.XA Pending CN110125527A (en) | 2019-05-07 | 2019-05-07 | Secondary high frequency welding resistance current signal processing system |
Country Status (1)
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| CN (1) | CN110125527A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111505539A (en) * | 2020-05-08 | 2020-08-07 | 麦克斯(郑州)医疗科技有限公司 | Transient magnetic field measurement system |
| CN113093084A (en) * | 2021-03-26 | 2021-07-09 | 天津市职业大学 | Online detection system and detection method for internal resistance and on-off performance of Rogowski coil |
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| CN113093084B (en) * | 2021-03-26 | 2022-11-15 | 天津市职业大学 | Online detection system and detection method for internal resistance and on-off performance of Rogowski coil |
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Application publication date: 20190816 |
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