Electronic pricing scale surface detection structure

Abstract

The utility model discloses a surface detection structure of an electronic pricing scale, which belongs to the technical field of electronic pricing scales, and comprises an electronic pricing scale body, the top of the electronic pricing scale body is provided with a detection mechanism, and the rear side of the electronic pricing scale body is fixedly connected with a protection box; the detection mechanism comprises a camera, a fixing plate, a stripe laser projection and a supporting rod, the top of the camera is fixedly connected with the bottom of the supporting rod, and the problems that the top of an existing electronic pricing scale is not provided with a structure for detecting the flatness of a symmetric disc, the weighing disc of the electronic pricing scale frequently bears the weight of various objects, and the weight of the weighing disc cannot be detected are solved. The problems that when a heavy object or an object with sharp corners is placed, pressure borne by a scale pan may cause local deformation of the scale pan, recesses of different degrees are generated, whether the scale pan of the electronic pricing scale is in a flat state or not is difficult to judge through naked eyes, and the recesses of the scale pan easily affect accurate weighing and pricing of the object are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic price computing scales, in particular to a surface detection structure of an electronic price computing scale. Background Art

[0002] An electronic pricing scale is an electronic weighing instrument that integrates weighing and pricing functions. It is mainly used in commercial trading places such as supermarkets, vegetable markets, shops, etc. It can quickly and accurately measure the weight of objects and calculate the price of items based on pre-set unit prices.

[0003] After reviewing the motor price calculating scales, the applicant found the following problems: the top of some existing electronic price calculating scales does not have a structure for detecting the flatness of the symmetrical disk. The weighing pan of the electronic price calculating scale frequently bears the weight of various objects. When heavy objects or objects with sharp edges are placed, the pressure on the weighing pan may cause its local deformation and produce varying degrees of depression. It is difficult to judge whether the weighing pan of the electronic price calculating scale is in a flat state by the naked eye. The depression of the weighing pan can easily affect the accurate weighing and pricing of the object.

[0004] Therefore, a surface detection structure of an electronic price scale is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a surface detection structure for an electronic price computing scale, which can solve the problem that the top of some existing electronic price computing scales does not have a structure for detecting the flatness of a symmetrical disk. The weighing pan of the electronic price computing scale frequently bears the weight of various objects. When a heavier object or an object with sharp edges is placed, the pressure on the weighing pan may cause its local deformation and produce different degrees of depression. It is difficult to judge whether the weighing pan of the electronic price computing scale is in a flat state by the naked eye, and the depression of the weighing pan can easily affect the accurate weighing and pricing of the object.

[0006] To achieve the above object, the utility model provides the following technical solutions: an electronic price computing scale surface detection structure, comprising an electronic price computing scale body, a detection mechanism is arranged on the top of the electronic price computing scale body, and a protective box is fixedly connected to the rear side of the electronic price computing scale body;

[0007] The detection mechanism includes a camera, a fixing plate, a stripe laser projector and a support rod. The top of the camera is fixedly connected to the bottom of the support rod, the side of the fixing plate close to the camera is fixedly connected to the camera, and the top of the stripe laser projector is fixedly connected to the bottom of the fixing plate.

[0008] Preferably, a swivel block is provided on the left side of the electronic price computing scale body, the right side of the swivel block passes through the support rod and is fixedly connected to the surface of the electronic price computing scale body, and the swivel block is rotatably connected inside the support rod.

[0009] Preferably, the bottom of the support rod is fixedly connected to a limit block, a limit button is arranged on the left side of the limit block, the right side of the limit button passes through the limit block and extends to the interior of the electronic price calculating scale body, and the surface of the limit button is connected to the internal thread of the limit block.

[0010] Preferably, the left side of the electronic price computing scale body is fixedly connected to a limit bar, and the left side of the support rod is rotatably connected to a shift rod.

[0011] Preferably, both sides of the protection box are fixedly connected with rails, a protection cover is provided on the top of the protection box, and slide grooves are opened on both sides of the protection cover, and the surface of the rails is in active contact with the inner wall of the slide groove.

[0012] Preferably, both sides of the rear side of the protective box are fixedly connected with Velcro fleece surfaces, both sides of the rear side of the protective cover are fixedly connected with connecting blocks, the front side of the connecting block is fixedly connected with Velcro hook surfaces, and the rear side of the Velcro fleece surface is hooked with the front side of the Velcro hook surface.

[0013] Preferably, a pull block is fixedly connected to the rear side of the protective cover.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The present application uses a camera and a projector to optically detect the flatness of the electronic price computing scale's main body weighing plate, and can accurately detect whether the electronic price computing scale's main body weighing plate is flat. When the camera and the projector are not needed, the camera can be rotated backward to the inside of the protective box for protection, so that the camera can be rotated upward to detect the electronic price computing scale's main body weighing plate when needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall structural diagram of the surface detection structure of the electronic price-computing scale of the utility model;

[0017] Figure 2 It is a three-dimensional connection diagram of the protection state of the camera of the electronic price computing scale body in the utility model;

[0018] Figure 3 It is a three-dimensional connection schematic diagram of the detection mechanism in the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the protection box in the utility model;

[0020] Figure 5 It is a schematic diagram of the three-dimensional connection between the protective cover and the connecting block in the utility model.

[0021] In the figure, 1. electronic price computing scale body; 2. detection mechanism; 201. camera; 202. fixing plate; 203. projection; 204. support rod; 3. lever; 4. protective box; 5. limit strip; 6. rotating block; 7. limit button; 8. protective cover; 9. Velcro hook surface; 10. limit block; 11. Velcro fur surface; 12. rail; 13. slide groove; 14. pull block; 15. connecting block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 , the utility model provides a technical solution:

[0024] An electronic price computing scale surface detection structure comprises an electronic price computing scale body 1, a detection mechanism 2 is arranged on the top of the electronic price computing scale body 1, and a protective box 4 is fixedly connected to the rear side of the electronic price computing scale body 1;

[0025] The detection mechanism 2 includes a camera 201, a fixing plate 202, a stripe laser projector 203 and a support rod 204. The top of the camera 201 is fixedly connected to the bottom of the support rod 204, the side of the fixing plate 202 close to the camera 201 is fixedly connected to the camera 201, and the top of the stripe laser projector 203 is fixedly connected to the bottom of the fixing plate 202.

[0026] In this embodiment: by controlling the stripe laser projection 203 to project a stripe light pattern on the top of the weighing plate of the electronic price calculating scale body 1, and then using the camera 201 to capture the stripe pattern and analyze and determine whether there is a dent in the weighing plate of the electronic price calculating scale body 1, the flatness of the weighing plate of the electronic price calculating scale body 1 can be accurately detected.

[0027] Specifically, Figure 1 ,and Figure 3 As shown, a swivel block 6 is provided on the left side of the electronic price computing scale body 1 , and the right side of the swivel block 6 passes through the support rod 204 and is fixedly connected to the surface of the electronic price computing scale body 1 , and the swivel block 6 is rotatably connected inside the support rod 204 .

[0028] Specifically, Figure 1 and Figure 3As shown, the bottom of the support rod 204 is fixedly connected to the limit block 10, and a limit button 7 is arranged on the left side of the limit block 10. The right side of the limit button 7 passes through the limit block 10 and extends to the inside of the electronic price calculating scale body 1, and the surface of the limit button 7 is connected to the internal thread of the limit block 10.

[0029] Specifically, Figure 1 and Figure 3 As shown, the left side of the electronic price computing scale body 1 is fixedly connected to a limit bar 5, and the left side of the support rod 204 is rotatably connected to a lever 3.

[0030] In this embodiment: by rotating the support rod 204 backward and movably connecting the surface of the rotating block 6 with the inside of the support rod 204, the support rod 204 can be easily rotated, and the support rod 204 and the camera 201 and the stripe laser projection 203 are rotated backward to the inside of the protective box 4. At this time, the limit bar 5 contacts the support rod 204 to limit the support rod 204, and the protective box 4 can protect the camera 201 and the stripe laser projection 203. By rotating the limit button 7 and moving the limit button 7 to the inside of the electronic price calculating scale body 1, the support rod 204 can be limited.

[0031] Specifically, Figure 4 and Figure 5 As shown, both sides of the protection box 4 are fixedly connected with rails 12, the top of the protection box 4 is provided with a protection cover 8, both sides of the protection cover 8 are provided with slide grooves 13, and the surface of the rails 12 is in active contact with the inner wall of the slide groove 13.

[0032] Specifically, Figure 2 , Figure 4 and Figure 5 As shown, both sides of the rear side of the protection box 4 are fixedly connected with Velcro fleece surfaces 11, both sides of the rear side of the protection cover 8 are fixedly connected with connecting blocks 15, the front side of the connecting block 15 is fixedly connected with Velcro hook surface 9, and the rear side of the Velcro fleece surface 11 is hooked with the front side of the Velcro hook surface 9.

[0033] Specifically, Figure 5 As shown, a pull block 14 is fixedly connected to the rear side of the protective cover 8 .

[0034] In this embodiment: by moving the protective cover 8 to the slide groove 13 and engaging with the rail 12, and then hooking the Velcro fur surface 11 with the Velcro hook surface 9, the protective cover 8 can be connected to the protective box 4, and the camera 201 can be protected inside the protective box 4, and the protective cover 8 can be pulled by pulling the pull block 14.

[0035] Working principle: The stripe laser projection 203 is used as the active light source for detection. The stripe light it emits has a specific wavelength and light intensity distribution. When the stripe light is projected onto the surface of the scale plate of the electronic price calculating scale body 1, based on the principle of light reflection, on a flat surface, the stripes will be arranged regularly, with uniform stripe spacing and straight stripe shapes. This is because the reflection angle and path of light on a uniform plane are relatively consistent. When the scale plate surface of the electronic price calculating scale body 1 is uneven, according to the principle of triangulation, due to the change in surface height, the reflection path of the stripe light changes, causing the stripe image captured by the camera 201 to be deformed. The optical imaging system of the camera 201 focuses the stripe light reflected from the surface of the scale plate of the electronic price calculating scale body 1 The image sensor is composed of a large number of pixel units. Each pixel unit converts the received light intensity into a corresponding electrical signal, and forms a digital image signal after analog-to-digital conversion. The image collected by the camera 201 is first pre-processed by the built-in data processing unit, including grayscale processing, converting the color image into a grayscale image, reducing the amount of data and highlighting the contrast of the stripes, and then performing filtering operations such as Gaussian filtering or median filtering to remove noise points in the image. These noises may be caused by ambient light interference, thermal noise of electronic components, etc., and then feature extraction is performed. For the stripe image, the edge contour of the stripe is accurately extracted through the edge detection algorithm, and then the stripe straight line is fitted using methods such as Hough transform to calculate the actual stripe. The parameters such as the inter-spatial spacing and slope are compared with the parameters of the original projected fringes. The mathematical model established according to the triangulation principle is used to calculate the height difference of each point on the surface of the weighing plate of the electronic price computing scale body 1 relative to the reference plane by using the change of the fringes parameters. Finally, according to the calculated height difference data, the flatness evaluation index is used to judge whether the surface of the weighing plate of the electronic price computing scale body 1 is flat. If it exceeds the preset flatness standard range, it is judged that the surface has defects or is uneven, and the detection result is displayed through the external display terminal. When the camera 201 and the projector 203 are not needed, the limit button 7 is turned to move the limit button 7 out of the inside of the electronic price computing scale body 1, and then the support rod 204 is turned backward until the camera 201 is inside the protective box 4. Then move the protective cover 8 to the slide groove 13 and engage with the rail 12, then hook the Velcro fur surface 11 with the Velcro hook surface 9, and then the protective cover 8 can be connected to the protective box 4, and the camera 201 can be protected inside the protective box 4, and then turn the limit button 7, and move the limit button 7 to the inside of the electronic price computing scale body 1 again, so that the camera 201 can be limited inside the protective box 4, and when necessary, the camera 201 can be rotated to the outside of the protective box 4, so that the flatness of the weighing plate of the electronic price computing scale body 1 can be easily detected to determine whether the weighing plate of the electronic price computing scale body 1 needs to be replaced, thereby avoiding the problem that the top of some existing electronic price computing scales does not have a structure for detecting the flatness of the symmetrical plate, and the weighing plate of the electronic price computing scale frequently bears the weight of various objects.When placing heavy objects or objects with sharp corners, the pressure on the weighing pan may cause local deformation and different degrees of depression. It is difficult to judge whether the weighing pan of the electronic price computing scale is flat by naked eyes. The depression of the weighing pan can easily affect the accurate weighing and pricing of the object.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A surface detection structure for an electronic price-computing scale, comprising an electronic price-computing scale body (1), characterized in that: A detection mechanism (2) is provided on the top of the electronic price computing scale body (1), and a protective box (4) is fixedly connected to the rear side of the electronic price computing scale body (1); The detection mechanism (2) comprises a camera (201), a fixing plate (202), a stripe laser projector (203) and a support rod (204); the top of the camera (201) is fixedly connected to the bottom of the support rod (204); a side of the fixing plate (202) close to the camera (201) is fixedly connected to the camera (201); and the top of the stripe laser projector (203) is fixedly connected to the bottom of the fixing plate (202).

2. The surface detection structure of an electronic price-computing scale according to claim 1 is characterized in that: A rotating block (6) is arranged on the left side of the electronic price computing scale body (1); the right side of the rotating block (6) passes through the support rod (204) and is fixedly connected to the surface of the electronic price computing scale body (1); the rotating block (6) is rotatably connected inside the support rod (204).

3. The surface detection structure of an electronic price-computing scale according to claim 1 is characterized in that: The bottom of the support rod (204) is fixedly connected to a limit block (10), a limit button (7) is arranged on the left side of the limit block (10), the right side of the limit button (7) passes through the limit block (10) and extends to the inside of the electronic price calculating scale body (1), and the surface of the limit button (7) is connected to the inner thread of the limit block (10).

4. The surface detection structure of an electronic price-computing scale according to claim 1 is characterized in that: The left side of the electronic price computing scale body (1) is fixedly connected to a limit bar (5), and the left side of the support rod (204) is rotatably connected to a shifting rod (3).

5. The surface detection structure of an electronic price-computing scale according to claim 1 is characterized in that: Both sides of the protection box (4) are fixedly connected with rails (12), the top of the protection box (4) is provided with a protection cover (8), both sides of the protection cover (8) are provided with slide grooves (13), and the surface of the rails (12) is in active contact with the inner wall of the slide groove (13).

6. The surface detection structure of an electronic price-computing scale according to claim 5, characterized in that: Both sides of the rear side of the protection box (4) are fixedly connected with Velcro fleece surfaces (11), both sides of the rear side of the protection cover (8) are fixedly connected with connection blocks (15), the front side of the connection block (15) is fixedly connected with Velcro hook surfaces (9), and the rear side of the Velcro fleece surfaces (11) is hooked with the front side of the Velcro hook surfaces (9).

7. The surface detection structure of an electronic price-computing scale according to claim 5, characterized in that: A pull block (14) is fixedly connected to the rear side of the protective cover (8).

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