Apparatus and method for measuring peripheral shape of cylindrical body

A technology for measuring devices and peripheral shapes, applied in measuring devices, using optical devices, diagnostic recording/measurement, etc., can solve problems such as laser radiation, complex constraints of measuring equipment, and laser entering human eyes, etc., and achieve the effect of simple structure

Active Publication Date: 2017-01-04
NANJING STARTON MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the laser scanning head also has the problem of laser radiation. For example, when measuring the head, it is necessary to prevent the laser from entering the human eye.
[0005] It can be seen from the above that the measuring equipment in the prior art is relatively complicated and has many restrictions, and is not suitable for measuring cylindrical bodies or human bodies

Method used

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  • Apparatus and method for measuring peripheral shape of cylindrical body
  • Apparatus and method for measuring peripheral shape of cylindrical body
  • Apparatus and method for measuring peripheral shape of cylindrical body

Examples

Experimental program
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Effect test

Embodiment 1

[0087] to combine Figure 12 and 13 , assuming that the swivel of the device of the present invention is equipped with 4 detectors, the swivel is designed to be a standard circle, and the distance from each detector to the center of the swivel is S, but in fact there will be errors caused by various factors , one of which is that the swivel is not an exact circle, and the other is that each measuring probe also has an error after it is installed on the swivel; the measurement value of each detector is different, so it needs to be calibrated.

[0088] Place the measuring device of the present invention upright on a horizontal surface, such as a horizontal desktop, place two stages 30 on both sides of the measuring device, and use the positioning holes on the measuring device to locate the positions of the stages, and mark the The object 29 is placed on the stage 30, the radius of the calibration object is R, the position of the stage just makes the center of the calibration ob...

Embodiment 2

[0100] The device of the present invention is used for the measurement of the head shape and head circumference of children, see schematic diagram Figure 14 . According to the size of the child's head shape usually, the size of the device of the present invention is determined, two measuring probes are installed on the measuring ring, and the measuring device is installed on one end of a child's bed. When measuring, the measuring device is initialized first, and the user places the child on the measuring bed, puts the head into the measuring swivel, and starts the measurement. The measuring device controls the rotating ring to rotate 180 degrees. According to the set data collection requirements, the system collects data through two measuring heads. With the known measuring device parameters and calibration parameters, the head shape data of the child under test can be obtained.

[0101] Based on the head shape data, the head shape curve can be drawn, and the data about the...

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Abstract

The invention discloses a cylindrical object peripheral shape measuring device and method. The device and method can measure the peripheral shape of a cylindrical object such as a material object or a human body or an animal to obtain shape data of one section of the cylindrical object. The device has the advantages of being simple in structure, flexible and high in precision, and is applicable to medical measurement or industrial measurement or other situations where the peripheral shape of the cylindrical object needs to be measured. The device is composed of a mechanical scanning annular structure, an optical ranging probe, a motion control module, a position feedback module and a data collection and analysis system. The measuring device does not make contact with the surface of the object, the object is not damaged, no radiation exists, use is safe, and no special requirements for environment exist.

Description

technical field [0001] The invention relates to a measuring device and method for the shape of an object, in particular to a measuring device and method for the peripheral shape of a cylindrical body. Background technique [0002] In medical measurement and industrial measurement, people often need to measure the shape and size of objects. The current measurement equipment includes: three-coordinate measurement system, fixed laser scanning system and mechanical arm copying machine. The above-mentioned equipment can not only measure the object in three dimensions, but also can measure the outer peripheral shape of the columnar body. However, the above-mentioned equipment has high requirements on the size and measurement state of the object during measurement. For example, during measurement, the measured object must be able to be placed on the measuring device, and the measured object cannot move freely during the measurement process; and the traditional All measuring probes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/24G01B17/06A61B5/107
Inventor 王维平
Owner NANJING STARTON MEDICAL TECH CO LTD
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