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Calibration method, device and electronic equipment of height sensor for ultrasonic welding machine

A height sensor, ultrasonic welding technology, applied in the direction of measuring devices, instruments, etc., can solve the problem of large calibration error, to achieve the effect of reducing calibration error and accurate calculation

Active Publication Date: 2022-07-01
SBT ULTRASONIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the pressure is changed, the deformation of the frame will change, resulting in large calibration errors of the existing calibration methods under different pressures

Method used

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  • Calibration method, device and electronic equipment of height sensor for ultrasonic welding machine
  • Calibration method, device and electronic equipment of height sensor for ultrasonic welding machine
  • Calibration method, device and electronic equipment of height sensor for ultrasonic welding machine

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Effect test

Embodiment 1

[0052] figure 1 This is a flowchart of a method for calibrating a height sensor for an ultrasonic welding machine provided in Embodiment 1 of the present invention. This embodiment is applicable to the situation of height sensor calibration. The method can be performed by a height sensor calibration device for an ultrasonic welding machine. Refer to figure 1 , The calibration method of the height sensor for ultrasonic welding machine specifically includes the following steps:

[0053] S110. Under the calibration pressure Pi, measure the calibration data of the first calibration block and the calibration data of the second calibration block; wherein, i is the number of times of inputting the calibration pressure, i=1, 2...m, representing different calibration pressures respectively .

[0054] Specifically, a first calibration block and a second calibration block are respectively placed between the welding head and the bottom mold of the ultrasonic welding machine, the thicknes...

Embodiment 2

[0068] figure 2 This is a flowchart of a method for calibrating a height sensor for an ultrasonic welding machine provided in Embodiment 1 of the present invention. This embodiment is applicable to the situation of height sensor calibration. The method can be performed by a height sensor calibration device for an ultrasonic welding machine. Refer to figure 2 , The calibration method of the height sensor for ultrasonic welding machine specifically includes the following steps:

[0069] S201. Step (1) A first calibration block is placed between the welding head and the bottom mold.

[0070] Specifically, firstly, a first calibration block is placed between the welding head and the low die of the ultrasonic welding machine, the thickness of the first calibration block is Amm, and the height sensor is used to measure the first calibration block.

[0071] S202, step (2) Click the calibration start button of the controller.

[0072]Specifically, after placing the first calibrati...

Embodiment 3

[0117] image 3 This is a schematic structural diagram of a height sensor calibration device for an ultrasonic welding machine provided by the third embodiment of the present invention. A method for calibrating a height sensor for an ultrasonic welding machine has functional modules and beneficial effects corresponding to the execution method. see image 3 , a height sensor calibration device for an ultrasonic welding machine includes:

[0118] The calibration data acquisition module 310 is used to measure the calibration data of the first calibration block and the calibration data of the second calibration block under the calibration pressure Pi; wherein i is the number of times of input calibration pressure, i=1, 2...m, respectively Indicates different calibration pressures;

[0119] The calibration coefficient calculation module 320 is configured to calculate each first calibration coefficient a(P1), a(P2), a(P3), . . . a(Pm) and each second calibration coefficient b(Pi...

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Abstract

The invention discloses a method, device and electronic equipment for calibrating a height sensor for an ultrasonic welding machine. The method comprises: measuring the calibration data of the first calibration block and the calibration data of the second calibration block under the calibration pressure Pi; The calibration data of a calibration block and the second calibration block are calculated by linear fitting to obtain the first calibration coefficients a(P1), a(Pi) and the second calibration coefficients b(Pi); the calibration pressure Pi is used as the independent variable The sampling point of , with a(Pi) as the corresponding dependent variable, the linear fitting method is used to calculate the a under any pressure a (P) and b a , get a=a a (P)*P+b a ; Taking the calibration pressure Pi as the sampling point of the independent variable P, and taking b(Pi) as the corresponding dependent variable, the linear fitting method is used to calculate the a under any pressure b (P) and b b , we get b=a b (P)*P+b b ; Based on the voltage U output by the height sensor, the calculation formula of the height H is obtained as H=[a a (P)*P+b a ]*U+a b (P)+b b . The invention realizes the reduction of the calibration error of the height sensor.

Description

technical field [0001] Embodiments of the present invention relate to a height sensor calibration technology, and in particular, to a height sensor calibration method, device and electronic equipment for an ultrasonic welding machine. Background technique [0002] The welding machine has strict requirements on parameters such as height during the welding process, so the height sensor needs to be calibrated before welding. [0003] In the prior art, the calibration method is to put different calibration blocks with known thicknesses under the set calibration pressure, and obtain the corresponding relationship between the height and the sensor analog data through a linear fitting method. [0004] However, when the pressure is changed, the deformation of the frame will change, resulting in a large calibration error of the existing calibration method under different pressures. SUMMARY OF THE INVENTION [0005] The invention provides a calibration method, device and electronic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/02
CPCG01B21/02
Inventor 周宏建殷万武
Owner SBT ULTRASONIC TECH CO LTD