阅读说明：本技术 一种用于微细镍钛相变温度测试的视觉加强组件 (Visual enhancement assembly for testing phase transition temperature of micro nickel-titanium ) 是由 张文雄 陈军 于 2020-04-29 设计创作，主要内容包括：本发明涉及一种用于微细镍钛相变温度测试的视觉加强组件,包括下光源和设置在下光源下方的视觉加强背板,所述视觉加强背板包括发光底板；所述视觉加强背板上方设置有用于采集影像数据的摄像头。通过这样的设计,在下光源的下部设置视觉加强背板,使得被拍摄物体的拍摄背景为自发光背景,这样以来,可以排除掉许多阴影和杂光线的影像,为微细镍钛材料测试提供足够的光线保障,极大的提高拍摄的清晰度。(The invention relates to a visual enhancement assembly for testing the phase transition temperature of superfine nickel titanium, which comprises a lower light source and a visual enhancement back plate arranged below the lower light source, wherein the visual enhancement back plate comprises a luminous bottom plate; a camera used for collecting image data is arranged above the visual enhancement backboard. Through the design, the visual enhancement back plate is arranged at the lower part of the lower light source, so that the shooting background of a shot object is a self-luminous background, images of a plurality of shadows and parasitic rays can be eliminated, enough light guarantee is provided for testing a fine nickel-titanium material, and the shooting definition is greatly improved.)

1. A visual enhancement subassembly that is used for fine nickel titanium phase transition temperature to test which characterized in that: the visual enhancement backboard comprises a lower light source and a visual enhancement backboard arranged below the lower light source, wherein the visual enhancement backboard comprises a light-emitting bottom board; a camera used for collecting image data is arranged above the visual enhancement backboard.

2. The visual enhancement assembly for Nitinol fine temperature measurement according to claim 1, wherein said light emitting substrate is an L ED light emitting panel.

3. The visual enhancement assembly of claim 1 or 2 for use in fine nitinol transformation temperature testing, wherein: the vision enhancement backboard further comprises a light filtering film, and the light filtering film covers the upper surface of the light emitting base plate.

4. The visual enhancement assembly for microtniti phase transition temperature testing of claim 3, wherein: the visual enhancement backboard further comprises a heating pad, the heating pad is arranged between the filter coating and the light-emitting bottom plate, and the heating pad comprises a light-transmitting packaging layer and an electric heating wire packaged in the light-transmitting packaging layer.

5. The visual enhancement assembly for microtniti phase transition temperature testing of claim 4, wherein: the visual enhancement backboard is connected to the base, a central groove for accommodating the visual enhancement backboard is formed in the base, fixing lugs are arranged at four corners of the central groove, and fixing pieces are connected to the fixing lugs.

6. The visual enhancement assembly of claim 1 or 5 for use in fine nitinol transformation temperature testing, wherein: the visual enhancement backboard comprises a visual enhancement backboard body, wherein a transparent container is placed on the visual enhancement backboard, a storage rack is placed in the transparent container, the storage rack comprises a storage flat board and support columns for storing four corners of the storage flat board, and the storage flat board is a light-passing board.

7. The visual enhancement assembly for microtniti phase transition temperature testing of claim 6, wherein: the light-transmitting container is a glass container, and the object placing plate is a polyformaldehyde resin plastic plate with a smooth and light-transmitting surface.

8. The visual enhancement assembly of claim 1 or 7 for use in fine nitinol transformation temperature testing, wherein: an upper light source is arranged above the lower light source, a lampshade covers the upper light source, and the light rays emitted by the upper light source, the lower light source and the vision enhancement back plate are all shielded in the lampshade; go up light source, lower light source, vision reinforcing back plate, lamp shade, camera and all connect on the frame.

9. The visual enhancement assembly for microtniti phase transition temperature testing of claim 1, wherein: the lower light source irradiates downwards.

10. The visual enhancement assembly for microtniti phase transition temperature testing of claim 8, wherein: the upper light source is symmetrically arranged in two numbers, and the irradiation direction of the upper light source is obliquely upward.

11. The visual enhancement assembly for microtniti phase transition temperature testing of claim 3, wherein: the light filtering film is a polyimide single-layer film or a double-layer or multi-layer film.

Technical Field

The invention relates to a visual enhancement assembly for a micro nickel titanium phase transition temperature test.

Background

Nickel titanium alloy has shape memory property and superelasticity property, and is widely used in various fields such as medical treatment, building, aerospace, military and the like. The shape memory property and the superelasticity of the nickel-titanium alloy are both caused by internal phase change, so that the phase change temperature becomes an important parameter for considering the functional performance of the shape memory alloy.

In recent years, the development of small nickel titanium products such as artificial muscles in the medical industry is gradually going to be finer and smaller, and most of the original phase transition temperature test systems cannot meet the fine phase transition temperature test of nickel titanium.

In the DSC test method, the nickel titanium product is broken into small particles, and the phase change is driven to occur purely in the form of heat. In actual use, most of the nickel-titanium products absorb heat to recover shapes under the condition of deformation, so that the phase change is driven by energy in the form of heat and mechanical energy. Therefore, the phase transition temperature of the nickel-titanium product tested by the DSC method is often greatly different from the phase transition temperature in actual use, and the difference is unacceptable in the medical industry, especially in interventional products.

L VDT and RVDT test systems, both of them use displacement sensors, which means that the sensors apply a resistance to the nickel-titanium product during recovery, which tends to affect the test results when the nickel-titanium product is small (< 0.3mm in the standard), the error due to this resistance becomes very large, when the nickel-titanium product is very fine, such as when the diameter of the nickel-titanium wire is 0.03mm (for nerve supports), the nickel-titanium wire cannot push the displacement sensors during the test, i.e. the resistance from the sensors is much larger than the force of the nickel-titanium wire during recovery, and the phase transition temperature cannot be measured.

A nondestructive, non-contact and closer visual test system for the nickel-titanium phase transition temperature to the actual use condition of the product appears later, and the shape change of the nickel-titanium wire is captured in real time through a camera, so that experimental data are obtained. However, the existing visual test system for the nickel-titanium phase transition temperature can only stably detect nickel-titanium wires with the size larger than 0.1mm, and when the micro nickel-titanium materials with the size smaller than 0.1mm are detected, the existing single light irradiation assembly is poor in irradiation effect, shadows and fuzzy states exist, so that images captured by a camera are fuzzy, and the detection precision is influenced. The prior art urgently needs a visual enhancement component for testing the phase transition temperature of the fine nickel-titanium, which can improve the shooting precision and eliminate the negative factors such as shadow, blur and the like.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a visual enhancement assembly for a micro nickel-titanium phase transition temperature test, which can improve the shooting precision and eliminate the negative factors such as shadow, blur and the like.

The technical scheme of the invention provides a visual enhancement assembly for testing the phase transition temperature of fine nickel titanium, which comprises a lower light source and a visual enhancement back plate arranged below the lower light source, wherein the visual enhancement back plate comprises a light-emitting bottom plate; a camera used for collecting image data is arranged above the visual enhancement backboard.

Through the design, the visual enhancement back plate is arranged at the lower part of the lower light source, so that the shooting background of a shot object is a self-luminous background, images of a plurality of shadows and parasitic rays can be eliminated, the shooting definition is greatly improved, and sufficient light guarantee is provided for testing of a fine nickel-titanium material.

Preferably, the luminous bottom plate is an L ED luminous plate.

Preferably, the vision-enhancing backboard further comprises a filter film, the filter film covers the upper surface of the light-emitting baseplate, and the filter film is a polyimide single-layer film or a double-layer or multi-layer film. Such a design may filter out a portion of the stray light.

Preferably, the vision-enhancing backboard further comprises a heating pad, the heating pad is arranged between the filter film and the light-emitting bottom plate, and the heating pad comprises a light-transmitting packaging layer and an electric heating wire packaged in the light-transmitting packaging layer. Such design is convenient for integrate heating and light filling together, combines reasonable compactness.

Preferably, the vision reinforcing back plate is connected to the base, a central groove for accommodating the vision reinforcing back plate is formed in the base, fixing convex blocks are arranged at four corners of the central groove, and fixing pieces are connected to the fixing convex blocks. Such a design facilitates the fixation of the visual enhancement back plate.

As preferred, the printing opacity container has been placed on the backplate is strengthened to the vision, the supporter has been placed in the printing opacity container, the supporter is including putting the dull and stereotyped support column of putting the dull and stereotyped four corners of thing, it is the light-passing board to put the thing flat board. By means of the design, objects to be measured can be shot on the object placing flat plate, and the environment medium is injected into the light-transmitting container, so that the variation range of the environment temperature can be enlarged. The object placing flat plate is a light-transmitting plate, light rays of the vision reinforcing back plate can penetrate through the light-transmitting container and the object placing flat plate, the object placing flat plate is changed into a background plate with backlight, and shadow and stray light influence is eliminated.

Preferably, the light-transmitting container is a glass container, and the flat storage plate is a polyoxymethylene resin plastic plate with a smooth and light-transmitting surface. The design is convenient for light to penetrate.

Preferably, an upper light source is further arranged above the lower light source, a lampshade covers the upper light source, and the light rays emitted by the upper light source, the lower light source and the vision enhancement back plate are all shielded in the lampshade; go up light source, lower light source, vision reinforcing back plate, lamp shade, camera and all connect on the frame. According to the design, supplementary atmosphere light is generated through diffuse reflection of the upper light source and the inner wall of the lampshade, the light intensity is further enhanced, the lampshade can eliminate the influence of external stray light, and the illumination stability is further improved.

Preferably, the lower light source irradiates downwards. The design mainly irradiates the object to be measured through the light of the lower light source, and reflects the light to the camera to form a captured image.

Preferably, the upper light sources are symmetrically arranged in two, and the irradiation direction of the upper light sources is obliquely upward. Due to the design, a more uniform upper light source diffuse reflection effect is convenient to obtain.

The invention has the advantages and beneficial effects that: through the design, the visual enhancement back plate is arranged at the lower part of the lower light source, so that the shooting background of a shot object is a self-luminous background, images of a plurality of shadows and parasitic rays can be eliminated, the shooting definition is greatly improved, and sufficient light guarantee is provided for testing of a fine nickel-titanium material.

Drawings

FIG. 1 is an exploded view of a vision-enhancing backing plate according to the present invention;

FIG. 2 is a schematic view of a heating mat according to the present invention;

FIG. 3 is a schematic cross-sectional view of a heating mat according to the present invention;

FIG. 4 is a schematic view of the principle of the present invention that the lower light source, the upper light source and the vision-enhancing back plate are used in cooperation.

In the figure: 1. a lower light source; 2. a vision-enhancing back panel; 3. a light emitting backplane; 4. a light filtering film; 5. a heating pad; 6. a light-transmitting encapsulation layer; 7. an electric heating wire; 8. a base; 9. a central slot; 10. fixing the bump; 11. a fixing member; 12. a light-transmissive container; 13. placing a flat plate; 14. a support pillar; 15. an upper light source; 16. a lamp shade; 17. a frame; 18. a camera is provided.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.