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CN-224230923-U - Structured light imaging system for detecting object size change at high temperature

CN224230923UCN 224230923 UCN224230923 UCN 224230923UCN-224230923-U

Abstract

The utility model relates to a structured light imaging system for detecting dimensional changes of objects at high temperature, which comprises a heating furnace, a temperature control module and a data processing unit, wherein a target object heating chamber is arranged in the heating furnace, an observation window is arranged at an opening of the heating chamber, a sensor assembly is used for detecting the dimensions of the target object at different temperatures through the observation window, an adjustable bracket is used for adjusting the position of the sensor assembly so as to enable the sensor assembly to detect the target object at different positions, the temperature control module is used for controlling the temperature of the heating furnace, and the data processing unit is used for receiving detection data of the sensor assembly and calculating the dimensional changes of the target object. The adjustable support drives the sensor assembly to move in a three-dimensional space (in the horizontal and vertical directions), and multiple groups of structured light pattern data with different visual angles are collected at the same temperature. The data processing unit fuses a plurality of groups of data based on the triangulation principle, eliminates errors caused by light refraction and scattering in a high-temperature environment, and enables measurement results to be more accurate.

Inventors

  • LIU HANSONG
  • HUANG HUACHUAN

Assignees

  • 西南科技大学

Dates

Publication Date
20260512
Application Date
20250716

Claims (7)

  1. 1. A structured light imaging system for detecting dimensional changes of an object at high temperature, the system comprising: The heating furnace is internally provided with a target object heating chamber, and an opening of the heating chamber is provided with an observation window for placing and heating the target object; A sensor assembly for detecting the dimensions of the target object at different temperatures through the viewing window; The adjustable bracket is connected with the sensor assembly and used for adjusting the position of the sensor assembly so as to enable the sensor assembly to detect a target object at different positions; The temperature control module is arranged on the heating furnace and used for controlling the temperature of the heating furnace; And the data processing unit is electrically connected with the sensor assembly and is used for receiving detection data of the sensor assembly and calculating the dimensional change of the target object.
  2. 2. The structured light imaging system for detecting dimensional changes of objects at elevated temperatures of claim 1, wherein: the adjustable bracket includes: A mounting table; the two support plates are oppositely arranged on the mounting table; the screw rod is rotatably arranged between the two support plates; the two sliding rods are fixedly arranged between the two support plates; The sliding block is matched with the screw rod in a threaded manner and is sleeved on the two sliding rods in a sliding manner; The stepping motor is arranged on the support plate, and the output end of the stepping motor is connected with the screw rod; and the placement plate is arranged on the sliding block, and the sensor assembly is placed on the placement plate.
  3. 3. The structured light imaging system for detecting dimensional changes of an object at a high temperature as recited in claim 2, wherein a fixed clamping plate and a sliding clamping plate are disposed opposite to each other at an end of said placement plate away from said slider, such that a clamping space is formed between said fixed clamping plate and said sliding clamping plate, and said sensor assembly is disposed inside said clamping space.
  4. 4. The structured light imaging system for detecting dimensional changes of an object at a high temperature as recited in claim 3, wherein said placement plate has a protrusion on a side of said sliding clamping plate away from said clamping space, a threaded rod is disposed through said protrusion, and one end of said threaded rod is rotatably connected to said sliding clamping plate.
  5. 5. The structured light imaging system of claim 2, wherein said tunable support further comprises: one end of the electric push rod is connected with one end of the mounting table far away from the support plate; And the foundation plate is arranged at one end of the electric push rod, which is far away from the mounting table.
  6. 6. The structured light imaging system for detecting dimensional changes of an object at a high temperature as recited in claim 5, wherein a positioning groove is formed in said heating furnace; The adjustable bracket further comprises: The positioning block is positioned in the positioning groove and is connected with the heating furnace through a screw; the guide rod is arranged at one end of the positioning block, which is far away from the positioning groove, and the guide rod penetrates through the foundation plate in a sliding manner.
  7. 7. The structured light imaging system for detecting dimensional changes of an object at high temperature as recited in claim 6, wherein said base plate has a plurality of rollers at an end thereof remote from said electric putter.

Description

Structured light imaging system for detecting object size change at high temperature Technical Field The utility model belongs to the technical field of structured light imaging equipment, and particularly relates to a structured light imaging system for detecting the dimensional change of an object at high temperature. Background The structured light imaging technology is used as an advanced non-contact measurement means, and has wide application range and good effect in normal temperature measurement. The principle is that a specific structured light pattern is projected to a measured object, a deformation pattern is acquired through a camera, and three-dimensional coordinates of the surface of the object are calculated by utilizing a triangulation principle, so that high-precision measurement is realized. But in high temperature environment applications, a series of difficulties are faced. The high-temperature object radiates strong light to interfere with the receiving of the structured light pattern, so that the quality of the collected image of the camera is reduced, and the structured light pattern information is difficult to accurately extract. The high temperature causes the temperature of the air medium to be uneven, light propagates in an uneven temperature field to generate refraction and scattering, the structural light transmission path is changed, the traditional structural light measurement algorithm based on the assumption of ideal linear propagation fails, and the measurement result deviation is large. Currently, there are some improved methods for high temperature environment measurement, but there are limitations. Therefore, providing a structured light imaging system for detecting dimensional changes of objects at high temperature is an experimental basis for finding data testing conditions and subsequent improvement methods in high temperature environments. Disclosure of utility model The utility model aims to provide a structured light imaging system for detecting the dimensional change of an object at high temperature, which is used for solving the problems in the background technology. In order to achieve the technical purpose, the utility model adopts the following technical scheme: A structured light imaging system for detecting dimensional changes of an object at high temperature, the system comprising: The heating furnace is internally provided with a target object heating chamber, and an opening of the heating chamber is provided with an observation window for placing and heating the target object; A sensor assembly for detecting the dimensions of the target object at different temperatures through the viewing window; The adjustable bracket is connected with the sensor assembly and used for adjusting the position of the sensor assembly so as to enable the sensor assembly to detect a target object at different positions; The temperature control module is arranged on the heating furnace and used for controlling the temperature of the heating furnace; And the data processing unit is electrically connected with the sensor assembly and is used for receiving detection data of the sensor assembly and calculating the dimensional change of the target object. Optionally, the adjustable bracket includes: A mounting table; the two support plates are oppositely arranged on the mounting table; the screw rod is rotatably arranged between the two support plates; the two sliding rods are fixedly arranged between the two support plates; The sliding block is matched with the screw rod in a threaded manner and is sleeved on the two sliding rods in a sliding manner; The stepping motor is arranged on the support plate, and the output end of the stepping motor is connected with the screw rod; and the placement plate is arranged on the sliding block, and the sensor assembly is placed on the placement plate. Optionally, the one end of keeping away from on the board of placing the slider is equipped with fixed splint and slip splint relatively, so that fixed splint with form the centre gripping space between the slip splint, the sensor subassembly is located inside the centre gripping space. Optionally, the placing plate is provided with a bump on one side of the sliding clamping plate far away from the clamping space, a screw rod penetrates through the bump, and one end of the screw rod is rotationally connected with the sliding clamping plate. Optionally, the adjustable bracket further comprises: one end of the electric push rod is connected with one end of the mounting table far away from the support plate; And the foundation plate is arranged at one end of the electric push rod, which is far away from the mounting table. Optionally, a positioning groove is formed in the heating furnace; The adjustable bracket further comprises: The positioning block is positioned in the positioning groove and is connected with the heating furnace through a screw; the guide rod is arranged at one end of the positioni