Uniform light correlation sensing device
By using a uniform light beam sensing device in a photoelectric yarn defect detection sensor, the problem of low precision and accuracy of traditional detection methods is solved, and accurate detection of yarn edge contours and yarn defects is achieved.
Patent Information
- Application Number
- CN202520173246.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-01-24
AI Technical Summary
Traditional capacitance detection methods suffer from low accuracy and precision during yarn production due to factors such as temperature drift, zero drift, and metal wire contamination in fibers. In photoelectric yarn defect detection sensors, the point light source cannot emit parallel light, affecting the accuracy of yarn edge contour and defect identification.
A uniform light beam sensing device is adopted. By installing a high-power infrared emitting tube at the emitting end of the light guide and combining it with the exit lens and the incident lens to form a U-shaped structure, the light field is diffused and homogenized. The photodiode receives the electrical signal to improve the detection accuracy.
The detection accuracy and precision of the photoelectric yarn defect detection sensor have been improved, enabling precise identification of yarn edge contours and yarn defects.
Smart Images
Figure CN223857090U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the yarn textile technical field especially, relates to a uniform light opposite radiation sensing device. BACKGROUND
[0002] At present, in the yarn production and bobbin process yarn cleaning link of the textile field, if the production environment humidity changes greatly or the spinning fiber is mixed with metal wire, the traditional capacitance detection mode accuracy is greatly reduced due to the influence of temperature drift, zero drift too large and detection capacitance dielectric constant mutation, but the photoelectric detection principle is applied to make a sensor, which can easily realize yarn edge profile detection and yarn defect identification, and the most critical component for completing original signal acquisition in the photoelectric yarn defect detection sensor is the photoelectric signal sensing device. In the existing device, the point light source in the detection space cannot emit parallel light, so the detection accuracy and accuracy are low when detecting the yarn edge profile and yarn defect identification. UTILITY MODEL CONTENT
[0003] In view of the above defects or deficiencies, the purpose of the utility model is to provide a uniform light opposite radiation sensing device.
[0004] In order to achieve the above purpose, the technical scheme of the utility model is:
[0005] A uniform light opposite radiation sensing device, comprising: a light guide body, an infrared emitter tube is installed at the bottom end of the closed space of the emission end of the light guide body, a detection area is arranged in the middle of the light guide body, a group of exit lenses and incident lenses are installed on the detection area, a photoelectric diode is installed at one end of the light guide body, the photoelectric diode corresponds to the incident lens, and is connected with the incident lens receiving circuit board.
[0006] The detection area is a U-shaped structure, the exit lenses and incident lenses are symmetrically arranged on both sides of the U-shaped joint, and the exit lenses and incident lenses are the same size.
[0007] The detection inclination angle is 4.1°±0.1°, and the total length of the light path is 21mm±0.2mm.
[0008] The length of the exit lens or incident lens is 6mm±0.1mm, the width is 3.5mm±0.1mm, and the thickness is 1.5mm±0.1mm.
[0009] The exit lens is a lens formed by coating astigmatism powder on a PC plane mirror.
[0010] The light guide body is a white light guide body.
[0011] The white light guide body is coated with a titanium white powder layer.
[0012] The power of the infrared emission tube is 50mW-75mW.
[0013] Compared with the prior art, the utility model has the beneficial effects that:
[0014] The utility model discloses a uniform light opposite emission sensing device, and is matched with electronic yarn clearer photoelectric yarn defect detection sensor and is used, installs the high -power infrared emission tube on the bottom of the airtight space of the light guide body emission end, and the photodiode is welded on the receiving circuit board of the opposite detection area incident lens, and the detection area light exit lens, incident lens are symmetrical fastening on the both sides of the detection groove bottom, realize the problem of light field divergence and homogenization. The uniform light opposite emission sensing device is an important component of the photoelectric yarn defect detection sensor, effectively solves the problem that the point light source in the limited detection space cannot emit parallel light to realize uniform light field accurate detection yarn edge profile and yarn defect identification, and improves the detection precision and accuracy of the photoelectric electronic yarn clearer when working. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is the uniform light opposite emission sensing device structure schematic diagram of the utility model,
[0016] Figure 2 It is the appearance structure diagram of the utility model uniform light opposite emission sensing device,
[0017] Figure 3 It is the detection area schematic diagram of the utility model,
[0018] Figure 4 It is the exit lens structure diagram of the utility model,
[0019] Figure 5 It is the light path schematic diagram of the utility model.
[0020] In the drawing, 1 - shell, 2 - light guide body, 3 - infrared emission tube, 4 - photodiode, 5 - exit lens, 6 - incident lens, 7 - detection area. DETAILED DESCRIPTION
[0021] The utility model will be described in detail below in conjunction with the drawings, obviously, the described embodiment is only a part of the embodiment of the utility model, not all embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the protection scope of the utility model.
[0022] As Figure 1 , 2As shown in the utility model provides a kind of even light pair of shot sensing device, including shell 1, the light guide body 2 is installed in the shell 1, the bottom end of the closed space of the emission end of the light guide body 2 is equipped with infrared emission tube 3, the middle part of the light guide body 2 is equipped with detection area 7, the detection area 7 is equipped with a group of exit lens 5 and incident lens 6, one end of light guide body 2 is equipped with photodiode 4, the photodiode 4 corresponds with the incident lens 6, and is connected with the receiving circuit board of the incident lens 6, exemplary, photodiode 4 is welded on the receiving circuit board of the incident lens 6 directly opposite detection area 7.
[0023] As Figure 3 As shown, the detection area 7 is U-shaped structure, the exit lens 5 and incident lens 6 are symmetrically arranged on both sides of U-shaped joint, realize the problem of light field divergence and uniformization, and the exit lens 5 and incident lens 6 are the same size. The length of the detection area 7 of the utility model is 3.5mm, the bottom width is 2.4mm, the top width is 2.9mm, the height is 9mm, the inclination angle is 4.0°-4.2°, preferably 4.1°, and the total length of the light path is 21mm.
[0024] As Figure 4 As shown, the length of the exit lens 5 or incident lens 6 is 6mm±0.1mm, the width is 3.5mm±0.1mm, and the thickness is 1.5mm±0.1mm. The exit lens 5 is a lens formed by coating 3% astigmatism powder on PC plane mirror, so that the light entering the detection area 7 is similar to parallel light.
[0025] It should be noted that the light guide body 2 is a white light guide body that is not transparent. The light guide body is formed by coating titanium white powder on white light-transmitting nylon material to create a limited closed space for the light emitted by the high-power infrared emission tube to create a diffuse reflection environment. The lens window uses PC plane mirror + 3% astigmatism powder to make the light entering the detection area 7 similar to parallel light. The photodiode 4 receives the pair of shot light signals carrying the edge profile information of the detection object on the other side of the incident lens opposite the rear position, and simultaneously realizes the goal of converting the optical signal into an electrical signal.
[0026] The power of the infrared emission tube 3 of the utility model is 50mW-75mW, preferably 60mW. When the yarn moves in the detection groove, the light field of the detection area is more uniform, the light is closer to parallel light, and the test result is more accurate. As Figure 5As shown, in order to realize dynamic and accurate detection of yarns with diameters ranging from 0.05mm to 1.0mm, a light guide is used in combination with a high-power infrared emitter 3 and a photodiode 4 to form a diffuse reflection uniform light field transmission sensing device. When the yarn to be detected moves up and down in the limited detection area 7, the amplitude of the actual measurement signal at the receiving end is very stable, which ensures the accuracy of the yarn edge profile detection and defect identification. Due to the limited installation space, the size of the light guide is limited, and the distance between the light out and the incident lens in the detection area 7 is only 2.4mm to 2.9mm. Through the uniform light transmission sensing device, the problem of narrow half-power angle of point light source and the inability to achieve parallel light in a short distance can be effectively solved, thereby effectively improving the detection accuracy and accuracy of the photoelectric yarn defect detection sensor of the electronic yarn clearer.
[0027] It is obvious for those skilled in the art that the above specific embodiments are only preferred schemes of the present application, and therefore, any improvement or change made by those skilled in the art to some parts of the present application still embodies the principles of the present application and achieves the purpose of the present application, and all of them belong to the scope of protection of the present application.
Claims
1. A uniform light beam sensing device, characterized in that, The application relates to a light guide body (2) which is provided with an infrared emitting tube (3) at the bottom end of an end-closed space, a detection area (7) is arranged in the middle of the light guide body (2), a group of exit lenses (5) and incident lenses (6) are arranged in the detection area (7), a photoelectric diode (4) is arranged at one end of the light guide body (2), the photoelectric diode (4) corresponds to the incident lenses (6), and the photoelectric diode (4) is connected with a receiving circuit board of the incident lenses (6). The detection area (7) is in a U-shaped structure, the exit lenses (5) and the incident lenses (6) are symmetrically arranged at two sides of the U-shaped joint, and the exit lenses (5) and the incident lenses (6) are of the same size.
2. The uniform light shot detection sensor apparatus according to claim 1, wherein The detection inclination angle is 4.1 DEG+ / -0.1 DEG, and the total length of the light path is 21mm+ / -0.2mm.
3. The uniform light shot detection sensor apparatus according to claim 2, wherein The length of the exit lens (5) or the incident lens (6) is 6mm+ / -0.1mm, the width is 3.5mm+ / -0.1mm, and the thickness is 1.5mm+ / -0.1mm.
4. The uniform light shot detection sensor apparatus according to claim 2, wherein The exit lens (5) is a lens formed by coating astigmatism powder on a PC plane mirror.
5. The uniform light pair sensing device according to claim 3 or 4, characterized in that, The light guide body (2) is white and non-transparent.
6. The uniform light shot detection sensor apparatus according to claim 1, wherein Titanium white powder is coated on the white and non-transparent light guide body.
7. The uniform light shot detection sensor apparatus according to claim 6, wherein The power of the infrared emitting tube (3) is 50mW-75mW.
8. The uniform light shot detection sensor apparatus according to claim 6, wherein