Opening of photoelectric inspection device

Abstract

The present invention discloses a photoelectric inspection device for the start of a shift, comprising a detection head, an observation head and a connecting tube, wherein the detection head and the observation head are respectively fixed on the two ends of the connecting tube, the detection head comprises a detection housing, a light-emitting element and a photosensitive element, the detection housing is made of a light-shielding material, a detection slot is formed in the detection housing, the light-emitting element is arranged on the bottom of the detection slot, the photosensitive element is installed at a position close to the light-emitting element on the bottom of the detection slot, an optical fiber is provided in the connecting tube, and the photosensitive element is connected to the optical fiber to transmit the detection light reflected after passing through the photoelectric head to the observation head through the optical fiber. The photoelectric inspection device for the start of a shift of the present invention can simply and effectively detect whether the photoelectric head is contaminated by foreign matter by means of the arrangement of the detection head, the observation head and the connecting tube.

Description

Technical Field

[0001] The present invention relates to a spot inspection device, and more particularly to a photoelectric spot inspection device for starting a shift. Background Art

[0002] The photoelectric inspection at the beginning of a shift is an inspection process carried out on the photoelectric equipment before it starts working. Its purpose is to ensure the normal operation of the equipment and production safety. The more common photoelectric equipment failure at present is that foreign matter covers the photosensitive part of the photoelectric equipment, thereby blocking light from entering the photoelectric equipment, and then causing the photoelectric equipment to be unable to work effectively. The current existing technology for checking whether the photoelectric equipment is covered by foreign matter and affecting its work mainly involves observing the photoelectric head with the naked eye, so as to judge with the naked eye whether the photoelectric head is covered by foreign matter. However, the method of observation with the naked eye, on the one hand, the position distribution of the photoelectric equipment on the machine is diverse, and it is difficult to observe directly. On the other hand, it is easy for the naked eye to fail to observe under the influence of ambient light. Therefore, the current existing technology for detecting whether the photoelectric equipment is contaminated by foreign matter has the problems of low efficiency and low accuracy. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a photoelectric inspection device that can effectively improve the efficiency and accuracy of detecting whether a photoelectric device is contaminated by foreign matter.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a photoelectric inspection device for opening a shift, comprising a detection head, an observation head and a connecting tube, wherein the detection head and the observation head are respectively fixed on the two ends of the connecting tube, the detection head comprises a detection shell, a light-emitting element and a photosensitive element, the detection shell is made of a light-shielding material, a detection slot is formed in the detection shell, the light-emitting element is arranged on the bottom of the detection slot, and is used to emit detection light toward the photoelectric head, the photosensitive element is installed at a position close to the light-emitting element at the bottom of the detection slot, and is used to receive the detection light reflected after passing through the photoelectric head, an optical fiber is provided in the connecting tube, and the photosensitive element is connected to the optical fiber to transmit the detection light reflected after passing through the photoelectric head to the observation head through the optical fiber.

[0005] As a further improvement of the present invention, an imaging pattern is provided in the light-emitting element, and the detection light emitted by the light-emitting element is pattern projection light. An electronic photosensitive element and a wireless communication device are provided in the observation head. The electronic photosensitive element is connected to the optical fiber in the connecting tube to receive the detection light transmitted by the optical fiber and reflected after passing through the photoelectric head, and convert it into electrical signal image data and send it to the wireless communication device. The wireless communication device is communicatively connected to the external image recognition server to transmit the image data to the external image recognition server. The external image recognition server recognizes the image of the image data and then determines whether there is foreign matter contamination on the photoelectric head.

[0006] As a further improvement of the present invention, the specific way in which the external image recognition server determines whether the photoelectric head is contaminated by foreign matter is as follows: after receiving the image data, the server parses the image corresponding to the image data, compares it with the preset pattern stored internally, identifies the area different from the preset pattern, and calculates the recognition loss at the same time. If the calculated recognition loss is within the preset normal range, it is determined that the photoelectric head is not contaminated by foreign matter. If the recognition loss exceeds the preset normal range, it is determined that the photoelectric head is contaminated by foreign matter.

[0007] As a further improvement of the present invention, a rubber sheet is fixed to the notch of the detection slot, and the rubber sheet is provided with a plurality of cutting edges distributed in a circumference to form a plurality of triangular sheet structures inside the rubber sheet.

[0008] As a further improvement of the present invention, a clamping rod is slidably provided on the groove wall of the detection groove, one end of the clamping rod penetrates the groove wall of the detection groove to the outside, and the other end is coaxially fixed with a chuck, and a reset spring is coaxially sleeved on the clamping rod, and the two ends of the reset spring are respectively fixed to the end face of the chuck and the groove wall of the detection groove.

[0009] As a further improvement of the present invention, a conductive sheet is fixed on the side wall of the clamping rod, a sensing wire is passed through the detection shell, the sensing wire is connected to the observation head, a sliding channel is opened on the groove wall of the detection groove, the clamping rod is slidably arranged in the sliding channel, the end of the sensing wire extends to the sliding channel, and a contact sheet is fixed on the inner side wall of the sliding channel, the contact sheet is connected to the sensing wire, when the clamping rod slides to the conductive sheet and contacts the contact sheet, the sensing wire is connected, and a positioning signal is sent to the observation head.

[0010] As a further improvement of the present invention, it further comprises a viewing head, wherein the viewing head is threadedly connected to the end of the connecting pipe.

[0011] The beneficial effect of the present invention is that, by setting up a detection slot in the detection shell, the photoelectric head can be effectively covered to avoid the influence of ambient light during the detection process, and the setting of light-emitting elements and photosensitive elements can effectively realize the use of the overall mirror-like manner of the photoelectric head when it is not started to detect whether the surface of the photoelectric head is contaminated by foreign matter, and the use of a connecting tube composed of optical fibers as a connecting component can effectively achieve inconsistent angles between the detection head and the observation head, thereby reducing the influence of the installation position of the photoelectric head on the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the photoelectric spot inspection device for starting a shift of the present invention;

[0013] Figure 2 for Figure 1 Schematic diagram of the internal structure of the detection head;

[0014] Figure 3 for Figure 1 Schematic diagram of the end face structure of the detection head;

[0015] Figure 4 for Figure 2 Enlarged view of part A in the middle. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0017] Reference Figure 1As shown, a photoelectric inspection device for starting a shift in this embodiment is mainly used to detect whether the surface of the photoelectric head is contaminated before the equipment starts a shift, including a detection head 1, an observation head 2 and a connecting tube 3. The detection head 1 and the observation head 2 are respectively fixed on the two ends of the connecting tube 3. The detection head 1 includes a detection shell 11, a light-emitting element 12 and a photosensitive element 13. The detection shell 11 is made of a light-shielding material. A detection groove is formed in the detection shell 11. The light-emitting element 12 is arranged on the bottom of the detection groove for emitting detection light toward the photoelectric head. The photosensitive element 13 is installed at the bottom of the detection groove near the light-emitting element 12 for receiving detection light reflected after passing through the photoelectric head. Photometry, an optical fiber is provided in the connecting tube 3, and the photosensitive element 13 is connected to the optical fiber to transmit the detection light reflected after passing through the photoelectric head to the observation head 2 through the optical fiber. During the detection process, the detection personnel only need to put the detection head 1 on the photoelectric head to be detected, and then they can use the light-emitting element 12 and the photosensitive element 13 therein to realize the detection of surface contamination of the photoelectric head while avoiding the influence of ambient light. The setting of the optical fiber in the connecting tube 3 can achieve that the angles between the detection head 1 and the observation head 2 do not need to be consistent, and will not affect the transmission of the sensing light. In addition, the volume of the detection head 1 can be made as small as possible, so that it can be better inserted into the mechanical equipment and put on the photoelectric head.

[0018] Based on the above-mentioned structure of the detection head 1, observation head 2 and connecting tube 3, this embodiment adopts the observation head 2 as an image acquisition device, and then uses the external server calculation method to realize the automatic judgment of foreign matter contamination on the photoelectric head. Specifically: the reflected sensing light is first transmitted to the external image recognition server through the electronic photosensitive element and the wireless communication device, and then the external image recognition server parses the image corresponding to the image data in the server after receiving the image data, and compares it with the preset pattern stored internally, identifies the area different from the preset pattern, and calculates the recognition loss at the same time. If the calculated recognition loss is within the preset normal range, it is judged that the photoelectric head is not contaminated by foreign matter. If the recognition loss exceeds the preset normal range, it is judged that the photoelectric head is contaminated by foreign matter.

[0019] Furthermore, in order to enhance the light-shielding performance of the detection head 1, in this embodiment, a rubber sheet 4 is provided at the notch of the detection slot to achieve light-shielding, and a plurality of circularly distributed cutting edges are provided on the rubber sheet 4 to form a plurality of triangular sheet structures inside the rubber sheet 4, which can effectively facilitate the insertion of the photoelectric head.

[0020] In the actual use of the detection head 1, people are often unable to judge whether the position of the photoelectric head inserted into the detection head 1 is appropriate. Therefore, in this embodiment, a combined structure of the clamping rod 5 and the clamping plate 6 is used to realize the soft positioning of the photoelectric head, so that the position of the photoelectric head is more appropriate and reliable. Furthermore, in order to understand whether the position of the photoelectric head has reached the appropriate detection position, in this embodiment, a conductive sheet 51 is fixed on the side wall of the clamping rod 5, and a sensing wire 111 is passed through the detection shell 11. The sensing wire 111 is connected to the observation head 2, and a sliding channel is provided on the groove wall of the detection groove. The clamping rod 5 can be slidably set in the sliding channel, and the end of the sensing wire 111 extends to the sliding channel. A contact sheet 8 is fixed on the inner wall of the sliding channel, and the contact sheet 8 is connected to the sensing wire 111. When the clamping rod 5 slides to the conductive sheet 51 and contacts the contact sheet 8, as shown Figure 4 As shown, the clamping rod 5 is squeezed and pushed by the photoelectric head to slide to the left, so that the conductive sheet 51 contacts the contact sheet 8. After the detection is completed, since the photoelectric head is pulled out, the clamping rod 5 slides to the right and resets under the action of the reset spring, so that the conductive sheet 51 is separated from the contact sheet 8, and the sensing wire 111 is connected, and a position signal is sent to the observation head 2. The detection position can be understood by using the sensing wire 111. In this embodiment, an LED light is set on the side wall of the connecting tube 3 to indicate whether there is a position signal. It is simple and clear. In addition, in this embodiment, a flange is formed on the conductive sheet 51 to utilize the elasticity of the material of the conductive sheet 51 itself to achieve the effect of maintaining contact.

[0021] Since image recognition may also have certain misidentification situations, this embodiment also provides a viewing head 7 that can be observed with the naked eye to implement further manual identification of the photoelectric head that is felt to have misdetected. On the one hand, it can optimize the algorithm in the server, and on the other hand, it can ensure the reliability of the final detection result.

[0022] In summary, in this embodiment, by configuring the detection head 1 , the observation head 2 and the connecting tube 3 , it is possible to simply and effectively implement light shielding detection for foreign matter contamination of the photoelectric head.

[0023] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A photoelectric spot inspection device for opening a shift, characterized by: The invention comprises a detection head (1), an observation head (2) and a connecting tube (3), wherein the detection head (1) and the observation head (2) are respectively fixed on both ends of the connecting tube (3), the detection head (1) comprises a detection housing (11), a light-emitting element (12) and a photosensitive element (13), the detection housing (11) is made of a light-shielding material, a detection groove is formed in the detection housing (11), the light-emitting element (12) is arranged on the bottom of the detection groove and is used to emit detection light toward the photoelectric head, and the photosensitive element (13) is installed At a position near the light-emitting element (12) at the bottom of the detection groove, it is used to receive the detection light reflected by the photoelectric head. The connecting tube (3) is provided with an optical fiber, and the photosensitive element (13) is connected to the optical fiber to transmit the detection light reflected by the photoelectric head to the observation head (2) through the optical fiber; the light-emitting element (12) is provided with an imaging pattern, and the detection light emitted by the light-emitting element (12) is pattern projection light. The observation head (2) is provided with an electronic photosensitive element and a wireless communication device, and the electronic photosensitive element is connected to the connecting tube. (3) is connected to the optical fiber to receive the detection light reflected by the optical fiber after passing through the photoelectric head, and convert it into electrical signal image data and send it to the wireless communication device. The wireless communication device is connected to the external image recognition server to transmit the image data to the external image recognition server. The external image recognition server recognizes the image of the image data and then determines whether there is foreign matter contamination on the photoelectric head. The specific way for the external image recognition server to judge whether there is foreign matter contamination on the photoelectric head is as follows: after receiving the image data, the image corresponding to the image data is parsed in the server, and compared with the preset pattern stored internally, and the area different from the preset pattern is identified, and the recognition loss is calculated at the same time. If the calculated recognition loss is within the preset normal range, it is judged that the photoelectric head is not contaminated by foreign matter. If the recognition loss exceeds the preset normal range, it is judged that the photoelectric head is contaminated by foreign matter. The notch of the detection slot is fixed with a rubber sheet (4), and the rubber sheet (4) is provided with a plurality of cut edges distributed in a circle to form a plurality of triangular sheet structures inside the rubber sheet (4).

2. The photoelectric inspection device for starting a shift according to claim 1, characterized in that: A clamping rod (5) is slidably provided on the groove wall of the detection groove, one end of the clamping rod (5) penetrates the groove wall of the detection groove to the outside, and a clamping disc (6) is coaxially fixed to the other end. A reset spring is coaxially sleeved on the clamping rod (5), and the two ends of the reset spring are respectively fixed to the end surface of the clamping disc (6) and the groove wall of the detection groove.

3. The photoelectric inspection device for starting a shift according to claim 2, characterized in that: A conductive sheet (51) is fixed on the side wall of the clamping rod (5), a sensing wire (111) is passed through the detection housing (11), and the sensing wire (111) is connected to the observation head (2). A sliding channel is provided on the wall of the detection slot, and the clamping rod (5) is slidably arranged in the sliding channel. The end of the sensing wire (111) extends to the sliding channel, and a contact sheet (8) is fixed on the inner side wall of the sliding channel. The contact sheet (8) is connected to the sensing wire (111). When the clamping rod (5) slides to the conductive sheet (51) and contacts the contact sheet (8), the sensing wire (111) is connected, and a position signal is sent to the observation head (2).

4. The photoelectric inspection device for the start of a shift according to claim 3, characterized in that: It also includes a viewing head (7), wherein the viewing head (2) is threadedly connected to the end of the connecting pipe (3), and the viewing head (7) is threadedly connected to the end of the connecting pipe (3).

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