Illumination control device for fruit detection
By using the light detection and supplementary lighting unit of the light control device, the problem of inaccurate image data caused by uneven lighting is solved, thus achieving accurate detection of the external quality of fruits.
Patent Information
- Application Number
- CN202320229349.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-02-16
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2033-02-16
AI Technical Summary
Existing fruit testing equipment suffers from inaccurate image data due to uneven lighting and unsuitable intensity, affecting the accuracy of fruit quality analysis.
A light control device is adopted, including a light detection unit and a supplementary light unit. The light intensity is detected by a light sensor group and the brightness of the supplementary light unit is adjusted to provide uniform lighting conditions.
This ensures uniform lighting inside the testing chamber, improves the quality of fruit images captured by the camera, and guarantees the accuracy of fruit external quality testing.
Smart Images
Figure CN223883437U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fruit detection related technical field field, concretely relates to a light control device for fruit detection. BACKGROUND
[0002] The quality and safety problem of fruits is a problem that consumers pay close attention to, and fruit quality detection is one of important links in commercial treatment after fruit picking, directly influences the storage mode and the benefit of sales in the process of packaging treatment, transportation, and accurately and quickly detecting the quality of fruits is the guarantee of high quality of fruits. Fruit quality detection includes external quality detection and internal quality detection, wherein the fruit external quality detection is based on the size, shape, color of fruit on vision, and the fruit detection based on vision will cause the inaccuracy of fruit image data shot by equipment and affect the accurate analysis of subsequent fruit quality because of the non-uniform and inappropriate intensity of detection light source. Therefore, it is of great significance to develop a light control device for fruit detection. SUMMARY
[0003] In view of the above problems, a light control device for fruit detection is provided, which can realize the monitoring of light intensity of multiple sites by providing a light detection unit, and provide a basis for the regulation of the light environment in the detection box. The light control device for fruit detection can realize the automatic adjustment of the brightness of the lighting terminal by the light supplement unit, and provide more uniform light conditions for the fruit detection based on vision.
[0004] To solve the problems in the prior art, the utility model adopts the technical scheme that:
[0005] A light control device for fruit detection, comprising a detection box, the detection box is arranged on a fruit conveying belt, a camera is arranged in the detection box, the light control device comprises a light supplement unit, a light detection unit and a main control unit arranged in the detection box, the detection box has two side plates and a top plate, the two side plates are arranged on both sides of the conveying belt, the top plate is fixedly connected to the top of the two side plates, the light supplement unit is arranged below the top plate, the light detection unit is arranged below the inner side of the two side plates, and the light supplement unit and the light detection unit are electrically connected with the main control unit.
[0006] Preferably, the light detection unit comprises a first light sensor group and a second light sensor group, and the first light sensor group and the second light sensor group are symmetrically arranged with respect to the conveying belt.
[0007] Preferably, the first light sensor group and the second light sensor group are both composed of a plurality of light sensors arranged in a matrix.
[0008] Preferably, the light supplement unit comprises a lamp plate and a plurality of lamp beads arranged on the lamp plate.
[0009] Preferably, the lamp beads include a center lamp bead arranged at a center position of the lamp panel, and at least three annular bands are arranged outside the center lamp bead, and a plurality of peripheral lamp beads are uniformly arranged on each annular band.
[0010] Preferably, the number of the annular bands is three, and the number of the peripheral lamp beads arranged on each annular band is the same.
[0011] Preferably, two peripheral lamp beads are arranged on each annular band, the two peripheral lamp beads on each annular band are arranged in a mirror image relative to the center lamp bead, and the connecting line of the two peripheral lamp beads on the annular band of the inner ring is perpendicular to the connecting line of the two peripheral lamp beads on the annular band of the adjacent outer ring.
[0012] Beneficial effects: The system light source is controllable, the light detection unit is used for sensing the light intensity around the fruit to be detected, when the light is uneven, the system automatically adjusts the brightness of the light supplement unit, and more uniform light conditions are provided for the fruit detection based on vision. BRIEF DESCRIPTION OF DRAWINGS
[0013] Fig. 1 It is a structure schematic view of the light control device for fruit detection, and the structure schematic view of the fruit detection device on the automatic sorting conveying belt.
[0014] Fig. 2 It is a schematic view of the light control device for fruit detection.
[0015] Fig. 3 It is a schematic view of the light supplement unit of the light control device for fruit detection.
[0016] Marked numbers in the figure are:
[0017] 1, conveying belt;
[0018] 2, camera;
[0019] 3, detection box; 31, side plate; 32, top plate;
[0020] 4, light supplement unit; 41, lamp panel; 42, center lamp bead; 43, peripheral lamp bead; 44, first annular band; 45, second annular band; 46, third annular band;
[0021] 5, light detection unit; 51, first light sensor group;
[0022] 6, main control unit. DETAILED DESCRIPTION
[0023] In order to further understand the characteristics, technical means and specific purposes and functions achieved by the utility model, the utility model will be described in further detail in combination with the drawings and specific embodiments.
[0024] Referring to Figs. 1-2 The light control device for fruit detection shown in the figure comprises a detection box 3 arranged on a fruit conveying belt 1, a camera 2 arranged in the detection box 3, a light supplementing unit 4, a light detection unit 5 and a main control unit 6 arranged in the detection box 3, the detection box 3 has two side plates 31 arranged on the two sides of the conveying belt 1 respectively and a top plate 32 fixedly connected to the top of the two side plates 31, the light supplementing unit 4 is arranged below the top plate 32, the light detection unit 5 is arranged below the inner sides of the two side plates 31, and the light supplementing unit 4 and the light detection unit 5 are electrically connected to the main control unit 6.
[0025] The main control unit 6 is used for receiving light data information collected by the light detection unit 5 for data analysis and judgment and sending control instructions to the light supplementing unit 4, and the light supplementing unit 4 performs work according to the control instructions. The main control unit 6 has a single-chip microcomputer therein, the single-chip microcomputer is used for auxiliary driving of the light detection unit 5, the light detection unit 5 detects ambient light information and transmits the information to the single-chip microcomputer, the single-chip microcomputer is signal connected to the main control unit 6 and is used for processing light data information sent by the light detection unit 5 and sending control instructions to the light supplementing unit 4.
[0026] The light detection unit 5 comprises a first light sensor group and a second light sensor group, and the first light sensor group and the second light sensor group are symmetrically arranged relative to the conveying belt 1.
[0027] The first light sensor group and the second light sensor group are both composed of a plurality of light sensors arranged in a matrix.
[0028] The light sensor groups are arranged at each collection site below the two side plates 31 of the detection box 3 by a fixing method such as blue tape, and the light sensor groups are symmetrically arranged on the left and right sides of the inner side of the detection box 3, so that the multi-site light information monitoring function can be realized. Moreover, the light sensor groups are arranged in a matrix, the collected ambient light information is relatively uniform and accurate, and the collection of sensing information is affected to a very small extent.
[0029] Referring to Fig. 3 The light supplementing unit 4 comprises a lamp plate 41 and a plurality of lamp beads arranged on the lamp plate 41.
[0030] The lamp beads comprise a center lamp bead 42 arranged at the center position of the lamp plate 41, at least three annular bands are arranged at the periphery of the center lamp bead 42, and a plurality of peripheral lamp beads 43 are uniformly arranged on each annular band.
[0031] The number of the annular bands is three, and the number of the peripheral lamp beads 43 arranged on each annular band is the same.
[0032] The three annular bands are named as a first annular band 44, a second annular band 45 and a third annular band 46, and the same as the center lamp bead 42, the light-on and light-off and the light intensity adjustment of the lamp beads are realized according to the control instruction, and the uniformity of the light intensity in the detection box 3 is ensured. The light sensor group senses the light environment in the detection box 3, and generates a light value signal. After the main control unit receives the light value signal, the light value of the light value signal is compared with the set threshold value, and the set threshold value here is a threshold value range.
[0033] In order to accurately control the light-on and light-off of each lamp bead, four threshold values are set here, threshold value 1, threshold value 2, threshold value 3 and threshold value 4 are sequentially decreased and have no intersection; the control mode of the light supplement unit 4 is illustrated by taking the threshold value 1 and the threshold value 2 as examples. At the beginning, the center lamp bead 42 and the peripheral lamp bead 43 are all turned off, when the light value is lower than the set threshold value 1, the main control unit 3 generates a current control signal 1, controls the center lamp bead 42 to be lighted and be the highest brightness; when the light value is higher than the set threshold value 1, the main control unit 3 generates a current control signal 2, controls the center lamp bead 42 to be turned off; when the light value is in the set threshold value 1 range, the main control unit 3 generates a current adjustment signal 1, adjusts the light-emitting brightness of the center lamp bead 42 according to the need; when the light value is lower than the set threshold value 2, the main control unit 3 generates a current control signal 3, controls the lamp beads on the first annular band 44 to be lighted and be the highest brightness, when the light value is in the set threshold value 2 range, the main control unit 3 generates a current adjustment signal 2, adjusts the light-emitting brightness of the lamp beads on the first annular band 44 according to the need; the control modes of the lamp beads on the second annular band 45 and the third annular band 46 are the same as above; wherein the data processing module stores the set threshold value data.
[0034] Two peripheral lamp beads 43 are arranged on each annular band, the two peripheral lamp beads 43 on each annular band are mirror arranged relative to the center lamp bead 42, and the connecting line of the two peripheral lamp beads 43 on the annular band located in the inner ring is perpendicular to the connecting line of the two peripheral lamp beads 43 on the annular band of the adjacent outer ring.
[0035] The lamp beads arranged layer by layer in this way can make the light more uniform, so that the picture captured by the camera 2 is clearer, and the good and bad of the external quality of the fruit is easy to detect.
[0036] The above embodiment only expresses one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.
Claims
1. A light control device for fruit detection, comprising a detection box, the detection box is arranged on a fruit conveying belt, a camera is arranged in the detection box, characterized in that, The light control device comprises a light supplement unit, a light detection unit and a main control unit arranged in a detection box, the detection box has two side plates and a top plate, the two side plates are arranged on the two sides of the conveying belt respectively, the top plate is fixedly connected to the top of the two side plates, the light supplement unit is arranged below the top plate, the light detection unit is arranged below the inner side of the two side plates, and the light supplement unit and the light detection unit are electrically connected with the main control unit.
2. The light control device for fruit detection according to claim 1, wherein, The light detection unit comprises a first light sensor group and a second light sensor group, and the first light sensor group and the second light sensor group are symmetrically arranged relative to the conveying belt.
3. The light control device for fruit detection according to claim 2, wherein The first light sensor group and the second light sensor group are both composed of a plurality of light sensors arranged in a matrix.
4. The light control device for fruit detection according to any one of claims 1-3, wherein, The light supplement unit comprises a lamp plate and a plurality of lamp beads arranged on the lamp plate.
5. The light control device for fruit detection according to claim 4, wherein, The lamp beads comprise a center lamp bead arranged at the center position of the lamp plate, at least three annular bands are arranged around the center lamp bead, and a plurality of peripheral lamp beads are uniformly arranged on each annular band.
6. The light control device for fruit detection according to claim 5, wherein The number of the annular bands is three, and the number of the peripheral lamp beads arranged on each annular band is the same.
7. The light control device for fruit detection according to claim 6, wherein Two peripheral lamp beads are arranged on each annular band, the two peripheral lamp beads on each annular band are mirror images relative to the center lamp bead, and the connecting line of the two peripheral lamp beads on the annular band of the inner ring is perpendicular to the connecting line of the two peripheral lamp beads on the annular band of the adjacent outer ring.