Secondary high-frequency solder resist current signal processing system
A current signal and processing system technology, applied in welding power supply, resistance welding equipment, welding equipment, etc., can solve the problems of fast changing frequency, poor working stability, low measurement accuracy, etc., and achieve high measurement accuracy, stable working performance, Effect of eliminating magnetic field loss
Inactive Publication Date: 2019-08-16
天津七所高科技有限公司
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[0002] The working current acquisition of the resistance spot welding machine is generally divided into two types. The signal acquisition of the welding current is divided into primary detection and secondary detection. The secondary current is the current flowing through the workpiece. Due to the instability of the current of the resistance spot welding machine and The frequency of change is relatively fast, and the existing current detection device is difficult to eliminate the influence of magnetic field loss, and cannot truly reflect the welding current, and the working stability is poor and the measurement accuracy is low
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[0018] Sub-high frequency welding resistance welding machine welding working current acquisition system, it comprises the following steps:
[0019] Sub-high frequency solder mask current signal processing system, such as figure 1 As shown, it includes a Rogowski coil 4 and a current detection system 3 for detecting the current terminal of the sub-high frequency resistance welding machine 1. The sub-high frequency resistance welding machine is equipped with a fixed electrode 2 and is located above the fixed electrode and is driven by a cylinder 6 to move up and down. Electrode 5, the Rogowski coil is placed on the periphery of the fixed electrode. The Rogowski coil has a simple structure, and there is no problem of stability of electricity and heat, and it has a wide measurement range, wide response frequency, small size, and easy installation. The real-time current signal of the electrode is converted into an electromagnetic signal, and the current detection system such as f...
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The invention relates to the technical field of spot welding machine current signal processing, in particular to a secondary high-frequency solder resist current signal processing system. The secondary high-frequency solder resist current signal processing system comprises a rogowski coil and a current detection system, wherein the current detection system comprises a working power supply and voltage conversion module, a system working state indicator lamp, a current collecting and processing filtering module, a single-chip microcomputer and an LCD display module, wherein the rogowski coil isconnected with an input end of the current collecting and processing filtering module, an output end of the current collecting and processing filtering module is connected with a current collecting and processing filtering module interface of the single-chip microcomputer, a power interface of the single-chip microcomputer is connected with the working power supply and the voltage conversion module, an indicator lamp interface of the single-chip microcomputer is connected with the system working state indicator lamp, a display interface of the single-chip microcomputer is connected with the LCD display module, and the current acquisition and processing filtering module comprises a smoothing, an amplification and an integrating circuit. According to the secondary high-frequency solder resist current signal processing system, the influence of magnetic field loss can be eliminated, the welding current can be really reflected, the working stability is high, and the measuring precision is high.
Description
technical field [0001] The invention relates to the technical field of current signal acquisition and processing of a welding resistance machine, in particular to a sub-high frequency welding resistance current signal processing system. Background technique [0002] The working current acquisition of the resistance spot welding machine is generally divided into two types. The signal acquisition of the welding current is divided into primary detection and secondary detection. The secondary current is the current flowing through the workpiece. Due to the instability of the current of the resistance spot welding machine and The frequency of change is relatively fast, and the existing current detection device is difficult to eliminate the influence of magnetic field loss, cannot truly reflect the welding current, and has poor working stability and low measurement accuracy. Contents of the invention [0003] The technical problem to be solved by the present invention is to prov...
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IPC IPC(8): B23K11/25
CPCB23K11/257
Inventor 吴铁东尹戈翟宝亮路向琨
Owner 天津七所高科技有限公司