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Roundness meter data acquisition circuit and method

A technology of data acquisition circuit and roundness meter, which is applied in the direction of instruments, measuring devices, etc., can solve the problems of poor scalability, expensive data acquisition card, slow data transmission speed, etc., and achieve cost reduction, promising prospects and ensure reliability. Effect

Inactive Publication Date: 2018-05-08
SOUTHWEST UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One is to use a data acquisition card, which is expensive and limited by the number of computer slots, addresses, and interrupt resources, and has poor scalability;
[0006] The other is to use external sampling and connect to the PC through RS-232C. This method is convenient to connect, but the data transmission speed is very slow, and the maximum data transmission speed does not exceed 115kb / s

Method used

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  • Roundness meter data acquisition circuit and method

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] refer to figure 1 , the present invention provides a data acquisition circuit for a roundness meter, comprising operational amplifiers U1 and U2, a reference voltage source U3, an ADC chip U4, three-terminal regulators U5, U6 and U7, a rectifier bridge U8, a single-chip microcomputer U9 and a liquid crystal display Screen U10. The detected signal of the sensor is input to the operational amplifier U1, and the operational amplifiers U1, U2, ADC chip U4,...

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Abstract

The invention discloses a roundness meter data acquisition circuit and method and relates to the technical field of mechanical error measurement. A 16-bit AD7961 is used to realize high-precision dataacquisition, an MCU is used as a core of a roundness measurement and analysis integrated machine, the intelligent and embedded roundness measurement is achieved, an MCU system is ready to use, a traditional data acquisition card is substituted by the 16-bit AD7961, a traditional PC is substituted by the MCU system, and the cost is reduced for at least 30 times. EEPROM is built into a selected STC15W4K61S4 single chip microcomputer, thus off-chip resources are saved, and the circuit is more convenient to use. Under the automation and intelligence trend of current 'Industry 4.0' large background, the prospect of the circuit is considerable, and the circuit and the method have strong engineering practice significances.

Description

technical field [0001] The invention relates to the technical field of mechanical error measurement, in particular to a roundness meter data acquisition circuit and a method thereof. Background technique [0002] Roundness refers to the degree of out-of-roundness of the surface shape of a circular part in a plane perpendicular to its axis. It belongs to the macroscopic geometric shape error. The measurement of roundness error is a very important content in the mechanical field. Roundness error directly affects zero. Fitting accuracy, rotation accuracy, friction, vibration, noise, etc. of components. The instrument used for roundness measurement is mainly a roundness meter, which uses its high-precision rotary axis as the measurement reference, and uses the sensor to contact (such as an inductive probe) or non-contact (such as a capacitive probe) with the measured part. The change from the actual contour of the corner position to the radius of the center of rotation is used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/20
Inventor 袁野
Owner SOUTHWEST UNIV
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