Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Experimental Apparatus and Method for Measuring Micro-length Changes of Filament Using Total Reflection Prism

A technology of total reflection prisms and experimental devices, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of difficult adjustment of optical systems, high accuracy of measurement results, and influence on experimental accuracy, and achieve low requirements for operating ability and proficiency , reduce external interference, improve the effect of measurement accuracy

Inactive Publication Date: 2018-05-15
QIQIHAR UNIVERSITY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has simple equipment and is widely used, but the optical system composed of optical lever reflectors, telescopes and scales is difficult to adjust, and it is easily disturbed by the external environment after adjustment. Complicated operation and time-consuming measurement
This requires the experimenter to be precise and skilled when using the optical lever method to measure small changes in the length of the filament. Therefore, the accuracy of the measurement results is greatly affected by human factors.
In practical teaching, it is generally difficult to obtain ideal experimental results due to the limitation of students' hands-on ability and proficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Experimental Apparatus and Method for Measuring Micro-length Changes of Filament Using Total Reflection Prism
  • Experimental Apparatus and Method for Measuring Micro-length Changes of Filament Using Total Reflection Prism
  • Experimental Apparatus and Method for Measuring Micro-length Changes of Filament Using Total Reflection Prism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings and a specific embodiment.

[0035] Such as figure 1 As shown, the experimental device described in this embodiment consists of a top plate 1, a bottom plate 2, a bottom plate prism 3, a top plate prism 4, a turning prism 5, a laser transmitter 6, a laser receiver 7, a laser range finder 8, a filament 9, and a weight Code 10, connecting column 11 form.

[0036] Such as figure 1 As shown, the top plate 1 and the bottom plate 2 are rectangular rigid thin plates, and a laser emitter 6, a laser receiver 7, and a laser rangefinder 8 are arranged on the left inner corner of the upper surface of the bottom plate 2, and the laser emitter 6 and the laser receiver 7 are connected to the laser A range finder 8, the laser range finder 8 is a phase type laser range finder with a measurement accuracy of 1mm.

[0037] Such as figure 1 As shown, four bottom prisms 3 are respectively ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention discloses an experiment device and method of utilizing a total reflection prism to measure tiny length change of a fine wire. The experiment device is composed of a top plate, a bottom plate, a bottom plate prism, a top plate prism, a steering prism, a laser emitter, a laser receiver, a laser range finder, the fine wire and a connection column. The bottom plate prism and the top plate prism enable the laser to turn 180 degrees repeatedly, the steering prism enables the laser to turn 90 degrees, so that a laser loop passing laser emitter, the top plate prism, the bottom plate prism, the steering prism and the laser receiver orderly is formed. By analyzing the change of an overall light path length before and after action, the length change of the fine wire is obtained, the length change measurement of the fine wire of a millimeter level is transformed into the distance measurement of the overall laser loop of a meter level, the measurement precision is improved, and the external environment interference is small. The experiment device and method of the present invention is simple, convenient and rapid, has low requirements for the experiment operation skills, and is suitable for the physics experiment teaching.

Description

technical field [0001] The invention relates to a physical experiment device and method, in particular to an experimental device and method for measuring tiny length changes of filaments by using a total reflection prism. Background technique [0002] Measuring tiny length changes of filaments is a key issue in experiments such as the determination of the elastic modulus of metal wires and the linear expansion coefficient of metal wires. In reality, because the length change of the metal filament in the experiment is usually a small amount, generally between 0.1mm and 1mm, the conventional measurement method cannot meet the experimental accuracy requirements. [0003] The optical lever method is widely used in the existing university physics experiments to measure the small linear deformation of the metal wire. The optical lever method uses the optical lever reflector to tilt as the metal wire elongates, and the inclination of the optical lever reflector is deduced according...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/02
CPCG01B11/02
Inventor 刘相梅
Owner QIQIHAR UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com