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Labview-based numerical control machine tool temperature measurement system

A temperature measurement, CNC machine tool technology, applied in general control systems, control/regulation systems, thermometers, etc., can solve problems such as inaccurate measurement values, achieve the effect of improving accuracy and eliminating external electromagnetic interference

Inactive Publication Date: 2018-10-09
ANHUI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] In order to solve the problem of inaccurate measured values ​​caused by single software filtering or single hardware filtering in traditional temperature acquisition, the technical solution adopted by the present invention is:

Method used

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  • Labview-based numerical control machine tool temperature measurement system
  • Labview-based numerical control machine tool temperature measurement system

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Embodiment Construction

[0008] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the invention.

[0009] Such as figure 1 As shown, the hardware filter circuit structure diagram of the temperature measurement system of CNC machine tools based on Labview includes PT100 platinum resistance, bridge circuit, voltage stabilizing circuit, integrated addition and subtraction circuit, and active low-pass filter circuit. The PT100 platinum resistance is connected to one end of the bridge circuit, and the PT100 is placed in a mixture of ice and water at 0°C. T...

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Abstract

The invention discloses a Labview-based numerical control machine tool temperature measurement system, which comprises a PT100 platinum resistor, a bridge circuit, a voltage stabilization circuit, anintegrated addition and subtraction operation circuit, an active low-pass filter circuit, a USB acquisition card and a software filter interface. When temperature at the measurement place of the machine tool changes, the resistance of the PT100 changes, the voltage stabilization circuit provides a stable voltage source for the bridge circuit, under effects of the bridge circuit at the moment, thechange of the resistance is converted to the change of the voltage, common-mode signals in the signals are removed through the integrated addition and subtraction operation circuit, further through the active low-pass filter circuit, high-frequency interference signals contained in the signals are removed, the outputted signals are connected onto a wiring terminal of the USB acquisition card, thesignals are then acquired in the Labview through a data acquisition unit of the software filter interface, and through the data filter unit, the interference signals are removed completely and the processed signals are stored. The user interaction interface built with the Labview as a software platform is convenient to operate, powerful in functions, short in development period, energy-saving, environmental-friendly and has a good application prospect.

Description

Technical field [0001] The invention relates to the technical field of temperature measurement, in particular to a Labview-based numerical control machine tool temperature measurement system. Background technique [0002] Research has shown that the error caused by the machine tool heating accounts for 40% to 70% of the machine tool error. Therefore, measuring the temperature of the machine tool to optimize the structure of the machine tool, or to perform thermal error compensation to improve the accuracy of the machine tool is important. However, in the actual temperature measurement of machine tools, because the structure of the machine tool is more complicated, there are more points that need to measure the temperature, the working environment of the machine tool is relatively poor, and the measured temperature is susceptible to electromagnetic interference, which brings difficulties to accurate temperature measurement. Summary of the invention [0003] In order to solve the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/18G05B19/4062
CPCG05B19/4062G01K7/18Y02P90/02
Inventor 陈邦晟徐傲
Owner ANHUI UNIV OF SCI & TECH
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