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Excitation source circuit of welding seam tracking sensor

A source circuit, sensor technology, applied in instruments, simulators, computer control and other directions, can solve the problem of square wave and sine wave frequency and amplitude cannot be adjusted

Inactive Publication Date: 2013-12-18
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the frequency and amplitude of the square wave and sine wave used in the existing hardware excitation cannot be adjusted, the present invention proposes an excitation source circuit for a weld seam tracking sensor

Method used

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  • Excitation source circuit of welding seam tracking sensor
  • Excitation source circuit of welding seam tracking sensor
  • Excitation source circuit of welding seam tracking sensor

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Experimental program
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specific Embodiment approach 1

[0009] Specific implementation mode 1. Combination figure 1 Describe this embodiment, the excitation source circuit of a seam tracking sensor described in this embodiment, the circuit includes a single-chip circuit 1, a keyboard circuit 2, a differential circuit 3 and a power amplifier circuit 4; the amplitude control signal input of the single-chip circuit 1 terminal is connected to the output terminal of the amplitude control signal of the keyboard circuit 2, the input terminal of the frequency control signal of the single-chip microcomputer circuit 1 is connected to the output terminal of the frequency control signal of the keyboard circuit 2, the sinusoidal signal output terminal of the single-chip microcomputer circuit 1 is connected to the sinusoidal signal input terminal of the differential circuit 3, and the differential The differential signal output end of the circuit 3 is connected to the differential signal input end of the power amplifier circuit 4 .

[0010] Thro...

specific Embodiment approach 2

[0014] Embodiment 2. This embodiment is a further description of the excitation source circuit of a seam tracking sensor described in Embodiment 1. The differential circuit 2 includes the No. 1 interface circuit CON1, the No. 1 resistor R1, and the No. 2 resistor R2 , No. 1 capacitor C1, No. 2 capacitor C2, No. 1 operational amplifier U1, No. 3 resistor R3, No. 3 capacitor C3, No. 1 adjustable potentiometer P3, No. 4 capacitor C4, No. 5 resistor R5, No. 5 capacitor C5, No. 6 resistor R6, No. 2 adjustable potentiometer P6, No. 2 operational amplifier U2 and No. 7 resistor R7;

[0015] The No.1 interface of the No.1 two-terminal interface CON1 is grounded, the No.2 interface of the No.1 two-terminal interface CON1 is connected to one end of the No.1 resistor R1, and the other end of the No.1 resistor R1 is connected to the inverting input terminal of the No.1 operational amplifier U1 at the same time. One end of the first capacitor C1 and one end of the second resistor R2, the n...

specific Embodiment approach 3

[0017] Specific Embodiment 3. This embodiment is a further description of the excitation source circuit of a seam tracking sensor described in Specific Embodiment 1. The power amplifying circuit 3 includes No. 8 resistor R8, No. 3 operational amplifier U3, No. 1 pole Capacitor C6, Capacitor C7 No. 7, Resistor R9 No. 9, Capacitor No. 8 C8, Capacitor No. 2 Polarity C9, Capacitor No. 10 C10 and No. 2 Two-terminal Interface CON2;

[0018] One end of the eighth resistor R8 is the differential signal input end of the power amplifier circuit 4, the other end of the eighth resistor R8 is connected to the inverting input end of the third operational amplifier U3, the non-inverting input end of the third operational amplifier U3 is grounded, and the third operational amplifier U3 is grounded. The positive power supply end of the amplifier U3 is connected to one end of the No. 7 capacitor C7 at the same time, the positive pole of the No. 1 polar capacitor C6 and the positive 12V power sup...

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Abstract

The invention provides an excitation source circuit of a welding seam tracking sensor and relates to the technical field of electronic circuits. The excitation source circuit solves the problem that the frequency and the amplitude of a square wave adopted in existing hardware excitation and the frequency and the amplitude of a sine wave adopted in the exciting hardware excitation cannot be adjusted. The excitation source circuit comprises a single chip microcomputer circuit, a keyboard circuit, a differential circuit and a power amplification circuit; the amplitude control signal input end of the single chip microcomputer circuit is connected with the amplitude control signal output end of the keyboard circuit, the frequency control signal input end of the single chip microcomputer circuit is connected with the frequency control signal output end of the keyboard circuit, a sine signal output end of the single chip microcomputer circuit is connected with the sine signal input end of the differential circuit, and the differential signal output end of the differential circuit is connected with the differential signal input end of the power amplification circuit. The excitation source circuit is suitable for the technical field of electronic circuits.

Description

technical field [0001] The invention relates to the technical field of electronic circuits. Background technique [0002] Common differential transformer excitation methods are usually hardware excitation, including square wave excitation and sine wave excitation. The square wave excitation has high-frequency clutter, the transformer needs a large excitation current and power, and the heating life of the components is also reduced. At the same time, the output signal of the sensor has many clutter and poor stability; while the hardware sine wave excitation overcomes the influence of high-frequency clutter, Small heat production and good stability. However, the hardware excitation can only adjust the frequency and amplitude of the excitation signal through the potentiometer, so that the signal frequency and amplitude cannot be obtained accurately. Moreover, the excitation signal frequency and amplitude cannot be intelligently and accurately adjusted according to the needs, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
Inventor 张忠典王天祥薄红伟夏裕俊吴来军朱世良李奇伟刘殿宝李大用齐嵩宇
Owner HARBIN INST OF TECH