Double-sided detection device and detection system

Abstract

The invention provides a double-sided detection device and system, and the device comprises a feeding conveying belt which is used for conveying a to-be-detected material entering from the outside; the discharging conveying belt and the feeding conveying belt are arranged in an up-down staggered butt joint mode, and a preset height difference exists between the discharging conveying belt and the feeding conveying belt; visual clamping assemblies are arranged in pairs in a fall space at the joint of the two conveying belts, and are used for clamping and shooting two opposite surfaces of a to-be-detected material falling and conveyed from the feeding conveying belt; the visual clamping assembly comprises a transparent clamping plate, a first shooting device arranged on the back of the clamping plate, and a telescopic driving part for driving the transparent clamping plate to stretch out and draw back. In the material falling process, the material is clamped, the image information of the two opposite faces of the to-be-detected material can be shot at the same time, double-face detection is achieved, the double-face image information of the material can be obtained at a time without overturning the material, and therefore the detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of double-side detection, and in particular to a tobacco leaf double-side detection device and a control method. Background Art

[0002] Tobacco leaf detection refers to the use of computer vision and image processing technology to automatically identify, detect and analyze tobacco leaves in tobacco plants. This technology is mainly used in the agricultural field, especially in tobacco planting.

[0003] In the prior art, people often ensure that tobacco leaves can be laid flat on the conveyor belt, and use the CCD probe installed above to take pictures and detect the shape and state of the tobacco leaves. However, in actual use, since the single-side detection of tobacco leaves cannot fully reflect the overall shape and surface state of the tobacco leaves, if the side of the tobacco leaves that cannot be detected is in a bad state, it cannot be identified;.

[0004] In the prior art, the collection of the front and back images of tobacco leaves mainly relies on the following two methods: by setting cameras on the upper and lower sides of a transparent conveyor belt to shoot the front and back images of tobacco leaves, or by grabbing and flipping tobacco leaves with a robotic arm to shoot the front and back images of tobacco leaves. Both of the above methods have certain shortcomings. For example, the transparent conveyor belt is easily scratched during use, forming scratches on the conveyor belt, and the light transmission effect at the scratched part is poor, which makes the camera set under the transparent conveyor belt have poor shooting effect, affecting the accuracy of image recognition; the method of setting a robotic arm to grab and flip tobacco leaves is less efficient, requires a long flipping time, and its overall detection efficiency is low.

[0005] Therefore, there is an urgent need for a double-sided detection device and a detection system that can realize double-sided detection of tobacco leaves without turning the tobacco leaves, thereby improving the detection efficiency. Summary of the invention

[0006] The purpose of the present invention is to provide a double-sided detection device and a detection system, aiming to solve the technical problem that traditional detection equipment cannot realize double-sided detection and has low detection efficiency.

[0007] To achieve the above objectives, in a first aspect, the present invention provides a double-sided detection device, comprising:

[0008] Feed conveyor belt, used to convey materials to be tested from outside;

[0009] The discharging conveyor belt is staggered and docked with the feeding conveyor belt up and down, and has a preset height difference with the feeding conveyor belt;

[0010] Visual clamping components are arranged in pairs in the drop space at the joint of the two conveyor belts, and are used to clamp and photograph the two opposite sides of the material to be inspected that falls from the feed conveyor belt;

[0011] The visual clamping assembly includes a transparent clamping plate, a first shooting device arranged behind the clamping plate, and a telescopic driving component for driving the transparent clamping plate to extend and retract.

[0012] As a further improvement of the above scheme, a second shooting device is also provided directly above the feed conveyor belt, for preliminarily acquiring shape information of the material to be detected on the feed conveyor belt;

[0013] The second camera is communicatively connected to the first camera, and is used to transmit the shape information of the material to be detected obtained by the second camera to the first camera, and the first camera automatically adjusts the focus according to the received shape information of the material to be detected.

[0014] As a further improvement of the above scheme, the double-sided detection device is also provided with an adsorption component, which is arranged at the docking end of the discharge conveyor belt and is located between the visual clamping component and the discharge conveyor belt, and is used to assist the material to be detected to fall at a uniform speed so that the visual clamping component can accurately clamp the material to be detected.

[0015] As a further improvement of the above solution, the visual clamping assembly also includes a fill light source, and the fill light source can be rotatably arranged adjacent to the first shooting device.

[0016] As a further improvement of the above solution, the first shooting device is an RGB camera.

[0017] As a further improvement of the above solution, the second shooting device is a monochrome camera.

[0018] As a further improvement of the above solution, the telescopic driving component is a cylinder.

[0019] As a further improvement of the above solution, the visual clamping assembly further includes a support block, and the first shooting device is arranged in the middle of the support block;

[0020] The telescopic driving components are arranged in pairs on both sides of the first shooting device, and the driving ends thereof are telescopically connected to the transparent clamping plate;

[0021] The fill light source can be rotatably arranged on the supporting block and is located between the first shooting device and the telescopic driving component.

[0022] As a further improvement of the above solution, a weighing roller is further provided inside the feed conveyor belt to obtain the weight information of the material to be tested thereon;

[0023] The weighing roller is in communication connection with the adsorption component, and is used to adjust the suction force of the adsorption component according to the weight information of the corresponding material to be detected obtained by the weighing roller.

[0024] As a further improvement of the above scheme, the adsorption assembly includes an adsorption channel adapted to the width of the discharge conveyor belt, a hollow baffle plate arranged at the air inlet of the adsorption channel, and a negative pressure fan connected to the adsorption channel;

[0025] The negative pressure fan is used to generate negative pressure, and the hollow baffle has a curved surface that is convenient for guiding the detection material to fall.

[0026] In a second aspect, the present invention further provides a detection system for a double-sided detection device, comprising:

[0027] A mechanical motion module, including a speed control unit and a standby control unit, for controlling the running speeds of the feed conveyor belt and the discharge conveyor belt;

[0028] A visual communication module, including an image acquisition unit, a feature definition unit and a target detection unit, is used to control the operation state, image acquisition and image detection of the visual clamping component;

[0029] The sensor module includes a sensing detection unit, a signal transmission unit and a signal processing unit, and is used to control each group of sensors inside the device and transmit their detection signals;

[0030] A data processing module, including an image processing unit, a decision control unit and a data storage unit, is used to receive data information sent by the mechanical motion module, the visual communication module and the data processing module, and process the data information to give corresponding feedback information;

[0031] The abnormality detection module is respectively connected to the visual communication module and the data processing module in communication, and includes an abnormality monitoring unit, an abnormality coding unit and an auxiliary decision-making unit, which are used to monitor abnormal states that may occur during the operation of the device and make corresponding feedback.

[0032] As a further improvement of the above scheme, the speed control unit is connected to the sensor module for communication, and controls the running speed of the feed conveyor belt so that adjacent materials to be detected have a preset interval according to whether the sensor arranged on the feed conveyor belt detects the materials to be detected waiting to be transported;

[0033] The standby control unit is in communication connection with the sensor module, and determines whether an operation instruction needs to be executed according to whether a sensor arranged on the discharge conveyor belt detects materials waiting to be transported.

[0034] As a further improvement of the above solution, the image acquisition unit is used to control the first shooting device to shoot and collect images, the number of shots, and obtain the length and width information of the shot object;

[0035] The feature definition unit is used to define edge feature point information of the photographed object during image acquisition, and to determine the state of the photographed object by identifying the edge feature point information.

[0036] The target detection unit is used to detect whether there is a specific detection target in the photographed object, and transmit the detection data to the data processing module or the abnormality detection module according to the determination result.

[0037] As a further improvement of the above scheme, the sensor detection unit is used to control the normal power supply and operation of each group of sensors inside the device; at the same time, according to the different port codes of sensors set at different positions, a characteristic port code for synchronous transmission of the signal is given before the data transmission of the sensor signal is carried out.

[0038] The signal transmission unit is used to transmit the sensing signal output by the sensor to the data processing module in real time;

[0039] The signal processing unit is used to filter the sensing signal during signal transmission.

[0040] As a further improvement of the above solution, the signal filtering method of the signal processing unit is as follows:

[0041] Let the input signal be x(n), the filter weight be w(n), and the filter output be y(n);

[0042] Filter output calculation: y(n) = w(n)^T(n)*x(n), where w(n)^T(n) is the transpose of the filter weights;

[0043] According to the correlation between the error signal and the input signal, the filter weight is adjusted to reduce the error;

[0044] Weight update rule: w(n+1)=w(n)+\mue(n)*x(n), where \mue is an adaptability parameter.

[0045] As a further improvement of the above solution, the image processing unit is used to pre-process the image information during the transmission process;

[0046] The decision control unit is used to coordinate the matching operation of the sensor module, the mechanical motion module, and the visual communication module; and calculate the start timing of the telescopic drive component of the visual clamping assembly and the shooting timing of the first shooting device according to the preset height difference between the two conveyor belts, the falling speed of the material, and the rotation speed of the feed conveyor belt;

[0047] The data storage unit is used to match and store the captured material images and corresponding detection data.

[0048] As a further improvement of the above scheme, the abnormal monitoring unit is used to monitor various abnormal conditions inside the device, and is also used to receive abnormal alarm information fed back from the sensor module, the mechanical motion module and the visual communication module and transmit it to the abnormal coding unit;

[0049] The abnormality coding unit is used to match the detected abnormality information with the abnormal fault coding information stored in the database;

[0050] The auxiliary decision unit is used to perform fault analysis based on the abnormal fault coding information obtained through actual matching, and synchronously feed back abnormal handling suggestions to the touch digital display screen to assist operators in eliminating abnormal conditions.

[0051] As a further improvement of the above-mentioned scheme, the detection system of the double-sided detection device also includes a user interface module, including a UI distribution unit, a control feedback unit and a parameter setting unit; it is used to feed back the operating status of the equipment and the detection status of the visual communication module to the touch digital display screen of the processing terminal.

[0052] Since the present invention adopts the above technical solution, the beneficial effects of this application are:

[0053] 1. A double-sided inspection device provided by the present invention comprises: a feeding conveyor belt for conveying materials to be inspected entering from the outside; a discharging conveyor belt, which is arranged to be staggered and docked with the feeding conveyor belt up and down, and has a preset height difference with the feeding conveyor belt; a pair of visual clamping components are arranged in the drop space at the docking point of the two conveyor belts, which are used to clamp and photograph the two opposite sides of the materials to be inspected that are dropped and transmitted from the feeding conveyor belt; the visual clamping components include a transparent clamping plate, a first photographing device arranged behind the clamping plate, and a telescopic driving component for driving the transparent clamping plate to be extended and retracted; in the present invention, an image acquisition device for obtaining double-sided information of the materials to be inspected is arranged between two conveyor belts with a preset height difference, and the materials are clamped during the falling process and the image information of the two opposite sides of the materials to be inspected can be photographed at the same time, thereby realizing double-sided inspection, and the double-sided image information of the materials can be obtained at one time without turning the materials over, thereby improving the inspection efficiency;

[0054] Compared with setting cameras on the upper and lower surfaces of the transparent conveyor belt to obtain double-sided image information, although the transparent clamping plate of the present invention also has a certain degree of wear, the transparent clamping plate set on the visual clamping assembly is easy to replace, which makes the maintenance of the equipment more convenient and low-cost compared with replacing the conveyor belt;

[0055] In addition, a second camera is provided directly above the feed conveyor belt of the present invention, for preliminarily acquiring shape information of the material to be detected on the feed conveyor belt; and the second camera is communicatively connected with the first camera, for transmitting the acquired shape information of the material to be detected to the first camera, and the first camera automatically adjusts the focus according to the received shape information of the material to be detected; such a setting, for non-standard or non-identical specification detection materials, by setting the second camera to preliminarily acquire the shape information of the detection material, and adjusting the focal length of the first camera based on the shape information, can improve the quality of the acquired image information, thereby improving the detection accuracy;

[0056] Furthermore, the present invention also provides an adsorption component, which is arranged at the docking end of the discharge conveyor belt and between the visual clamping component and the discharge conveyor belt, and is used to assist the material to be detected to fall at a uniform speed so that the visual clamping component can accurately clamp the material to be detected; the adsorption component is arranged so that the detected material falls evenly, which makes it easy to calculate the start timing of the telescopic drive component and thus can accurately clamp the fallen detected material; in addition, it is convenient to further improve the detection efficiency of the entire equipment by adjusting the suction force of the adsorption component and the telescopic speed of the telescopic drive component according to the different detected materials.

[0057] 2. The present invention provides a detection system for a double-sided detection device, comprising: a mechanical motion module, including a speed control unit and a standby control unit, for controlling the running speed of a feed conveyor belt and a discharge conveyor belt; a visual communication module, including an image acquisition unit, a feature definition unit and a target detection unit, for controlling the running state, image acquisition and image detection of a visual clamping component; a sensor module, including a sensor detection unit, a signal transmission unit and a signal processing unit, for controlling each group of sensors inside the device and transmitting their detection signals; a data processing module, including an image processing unit, a decision control unit and a data storage unit, for receiving data information sent by the mechanical motion module, the visual communication module and the data processing module And the data information is processed to give corresponding feedback information; the abnormality detection module is respectively connected to the visual communication module and the data processing module in communication, and includes an abnormality monitoring unit, an abnormality coding unit and an auxiliary decision-making unit, which are used to monitor the abnormal state that may be generated during the operation of the equipment and make corresponding feedback; in the present invention, the signal data in the transmission process is filtered and processed by setting a signal processing unit, so as to avoid signal transmission abnormality caused by signal waveform distortion caused by interference during the process of sensor signal transmission. At the same time, when the filtered signal is read by the data processing module, the data processing module can omit the corresponding signal identification process, thereby improving the overall response speed of the system, and thus improving the detection efficiency of the system;

[0058] In addition, in the present invention, an abnormality detection module is also provided, including an abnormality monitoring unit, an abnormality coding unit and an auxiliary decision unit, which are used to monitor abnormal conditions that may be generated during the operation of the equipment and make corresponding feedback; by pre-entering the abnormal conditions that may be generated during the operation of the equipment into the database, and when the equipment operation abnormality occurs, the abnormal conditions can be coded and classified by the abnormal coding unit, so that the debugging personnel can quickly check the abnormal conditions of the equipment according to the abnormality code and the suggested processing method fed back at the touch digital display screen, thereby reducing the downtime loss caused by the equipment abnormality and further improving the detection efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0060] Figure 1 It is a three-dimensional schematic diagram of a double-sided detection device disclosed in the present invention;

[0061] Figure 2 It is a three-dimensional schematic diagram of the internal structure of a double-sided detection device disclosed in the present invention;

[0062] Figure 3 It is a three-dimensional schematic diagram of the visual clamping assembly disclosed in the present invention;

[0063] Figure 4 It is a three-dimensional schematic diagram of the visual clamping assembly without the transparent clamping plate disclosed in the present invention;

[0064] Figure 5 It is a three-dimensional schematic diagram of the joint of two conveyor belts of a double-sided detection device disclosed in the present invention;

[0065] Figure 6 A schematic block diagram of a detection system of a double-sided detection device disclosed in the present invention;

[0066] Figure 7 It is a flowchart of the sensor module disclosed in the present invention;

[0067] Figure 8 It is a program flowchart of the mechanical motion module disclosed in the present invention;

[0068] Fig. 9 It is a flowchart of the visual communication module disclosed in the present invention;

[0069] Fig.10It is a flowchart of the data processing module disclosed in the present invention;

[0070] Fig.11 A flowchart of a user interface module disclosed in the present invention;

[0071] Fig.12 This is a flowchart of the abnormal feedback module disclosed in the present invention.

[0072] Reference numerals:

[0073] 1. Feed conveyor belt; 2. Discharge conveyor belt; 3. Visual clamping assembly; 31. Transparent clamping plate; 32. First shooting device; 33. Telescopic driving component; 34. Fill light source; 35. Support block; 4. Second shooting device;

[0074] 5. Adsorption component; 51. Adsorption channel; 52. Hollow baffle; 6. Weighing roller; 7. Frame; 8. Processing terminal; 9. Sensor.

[0075] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0076] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0077] It should be noted that all directional indications (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0078] In addition, in the present invention, the descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0079] Furthermore, the technical solutions between the various embodiments of the present invention may be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in the field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0080] Embodiment 1:

[0081] See also Figure 1-5 In order to better explain the inventive concept of the present invention, tobacco leaves are used as the detection material for description, that is, in this embodiment, tobacco leaves of non-uniform specifications and shapes are used as the detection object for description. A double-sided detection device provided by the present invention includes: a frame 7,

[0082] The feeding conveyor belt 1 provided on the frame 7 is used to convey the materials to be tested entering from the outside;

[0083] The discharging conveyor belt 2 is arranged on the frame 7, and the discharging conveyor belt 2 is staggered and docked with the feeding conveyor belt 1 up and down, and has a preset height difference with the feeding conveyor belt 1; in this embodiment, the preset height difference is set between 40 and 60 cm; sensors 9 are provided at both ends of the docking point between the feeding conveyor belt 1 and the discharging conveyor belt 2, respectively used to detect whether there are tobacco leaves to be dropped at the unloading end of the feeding conveyor belt 1 and to detect whether there are tobacco leaves to be transported outward at the feeding end of the discharging conveyor belt 2 to start the rotation and transportation of the discharging conveyor belt 2;

[0084] A pair of visual clamping components 3 are arranged in the drop space at the joint of the two conveyor belts, and are used to clamp and photograph the two opposite sides of the material to be inspected that falls from the feed conveyor belt 1;

[0085] Each of the visual clamping components 3 includes a transparent clamping plate 31, a first shooting device 32 arranged behind the clamping plate, and a telescopic driving component 33 for driving the transparent clamping plate 31 to extend and retract;

[0086] Specifically, the tobacco leaves to be inspected need to be placed on the upper surface of the feed conveyor belt 1. The feed conveyor belt 1 will continuously transport the tobacco leaves to the visual clamping component 3 during movement. When the tobacco leaves move to the edge of the feed conveyor belt 1, they lose support and fall downward. At the same time, the sensor 9 at the unloading end of the feed conveyor belt 1 will also feed back the corresponding detection signal to the telescopic drive component 33 according to the position of the tobacco leaves. At this time, the telescopic drive component 33 will extend during the falling process of the tobacco leaves, and the transparent clamping plate 31 will clamp and fix the tobacco leaves during the falling process. At the same time, the first shooting device 32 arranged behind the transparent clamping plate 31 obtains the image information of the corresponding surface. In this embodiment, the first shooting device 32 is an RGB camera so that various image information of the tobacco leaves can be fully identified.

[0087] Then the image data information obtained by shooting is fed back to the processing terminal 8 for real-time observation by the operator. After shooting is completed, the telescopic driving component 33 is controlled to retract and allow the tobacco leaves to fall to the discharge conveyor belt 2 below. At this time, the sensor 9 at the upper end of the discharge conveyor belt 2 will detect the signal that the tobacco leaves have arrived at the conveyor belt, and drive the discharge conveyor belt 2 to move to transport the tobacco leaves out of the equipment;

[0088] In the present invention, an image acquisition device for acquiring double-sided information of a material to be inspected is arranged between two conveyor belts with a preset height difference, and the material is clamped during the falling process and image information of two opposite sides of the material to be inspected can be simultaneously captured, thereby realizing double-sided inspection, and double-sided image information of the material can be obtained at one time without turning the material over, thereby improving the inspection efficiency;

[0089] Compared with setting cameras on the upper and lower surfaces of the transparent conveyor belt to obtain double-sided image information, although the transparent clamp 31 of the present invention also has a certain degree of wear, the transparent clamp 31 set on the visual clamping component 3 is easy to replace, which makes the maintenance of the equipment more convenient and low-cost compared to replacing the conveyor belt.

[0090] As a preferred embodiment, a second photographing device 4 is further provided directly above the feed conveyor belt 1, for preliminarily acquiring shape information of the material to be detected on the feed conveyor belt 1. In this embodiment, the second photographing device 4 is a monochrome camera;

[0091] The second camera 4 is in communication connection with the first camera 32, and is used to transmit the shape information of the material to be detected obtained by the second camera 4 to the first camera 32, and the first camera 32 automatically adjusts the focus according to the received shape information of the material to be detected;

[0092] With such a configuration, the tobacco leaves are preferentially detected by the first photographing device 32 before they fall into the visual clamping assembly 3, and the acquired appearance shape information is transmitted to the visual clamping assembly 3.

[0093] For non-standard or non-uniform specification inspection materials, such as tobacco leaves, by setting the second shooting device 4 to initially obtain appearance shape information and adjusting the focal length of the first shooting device 32 based on the appearance shape information, the quality of the acquired image information can be improved, thereby improving the accuracy of the inspection.

[0094] As a preferred embodiment, the double-sided detection device is further provided with an adsorption component 5, which is arranged at the butt end of the discharge conveyor belt 2 and is located between the visual clamping component 3 and the discharge conveyor belt 2, and is used to assist the material to be detected to fall at a uniform speed so that the visual clamping component 3 can accurately clamp the material to be detected;

[0095] The adsorption assembly 5 includes an adsorption channel 51 adapted to the width of the discharge conveyor belt 2, a hollow baffle 52 arranged at the air inlet of the adsorption channel 51, and a negative pressure fan connected to the adsorption channel 51;

[0096] The negative pressure fan is used to generate negative pressure;

[0097] Specifically, when the sensor 9 at the unloading end of the feed conveyor belt 1 detects tobacco leaves, the negative pressure fan is started to continuously generate negative pressure attraction, thereby ensuring that the tobacco leaves can fall at a uniform speed, and then it is convenient to calculate the start timing of the telescopic drive component 33 so as to accurately clamp the fallen test materials; in addition, it is convenient to further improve the detection efficiency of the entire equipment by adjusting the suction force of the adsorption component 5 and the telescopic speed of the telescopic drive component 33 according to the different test materials;

[0098] The adsorption component 5 also includes a controller and an electromagnetic valve connected to the negative pressure fan, which can perform intermittent adsorption during the process of tobacco leaf unloading; the hollow baffle plate 52 has an arc surface that is convenient for guiding the detection of material falling, so that the tobacco leaves are not easy to fall out of the discharge conveyor belt 2, and also enable the tobacco leaves to fall into the discharge conveyor belt 2 along the arc surface when falling.

[0099] As a preferred embodiment, the visual clamping component 3 also includes a fill light source 34, and the fill light source 34 can be rotated to be arranged adjacent to the first shooting device 32. The setting of the fill light source 34 provides sufficient light source for the first shooting device 32 to capture inclined images.

[0100] As a preferred embodiment, the visual clamping assembly 3 further includes a support block 35, and the first shooting device 32 is arranged in the middle of the support block 35; specifically, in this embodiment, a groove is opened at the center of the inner surface of the support block 35, and the first shooting device 32 is arranged in the groove;

[0101] The telescopic driving components 33 are arranged in pairs on both sides of the first shooting device 32, and the driving ends thereof are telescopically connected to the transparent clamping plate 31; in this embodiment, the telescopic driving components 33 are cylinders, specifically four micro cylinders, which are respectively arranged at the four corners of the supporting block 35, and are used to drive the telescopic movement of the transparent clamping plate 31;

[0102] The fill light source 34 is rotatably disposed on the support block 35 and is located between the first shooting device 32 and the telescopic driving component 33; a rotation damping is provided at the rotation connection between the fill light source 34 and the support block 35, so that the position of the fill light source 34 can be adjusted according to actual shooting requirements, and after adjustment, the movement of the fill light source 34 can be hindered due to the damping at the rotation location;

[0103] In the present invention, the first shooting device 32 for obtaining an image and the transparent clamping plate 31 for clamping tobacco leaves are combined and arranged on the support block 35, which has a simple structure and is convenient for simultaneously capturing image information of both sides of the tobacco leaves during the clamping process;

[0104] In some preferred embodiments, the transparent clamping plate 31 is made of an acrylic plate, and the transparent clamping plate 31 and the driving end of the telescopic driving component 33 are detachably connected, thereby facilitating maintenance and replacement.

[0105] As a preferred embodiment, a weighing roller 6 is further provided inside the feed conveyor belt 1 for obtaining weight information of the material to be tested thereon;

[0106] The weighing roller 6 is in communication connection with the adsorption assembly 5 and is used to adjust the suction force of the adsorption assembly 5 according to the weight information of the corresponding material to be detected obtained by the weighing roller 6, so as to ensure that the tobacco leaves can fall at a uniform speed.

[0107] As a preferred embodiment, the frame 7 can also be rotatably connected to a processing terminal 8, so as to facilitate the operator to control and observe the obtained tobacco leaf image information in real time.

[0108] It should be noted that, in this embodiment, the detection object is a roasted tobacco leaf, which has a moisture content of about 40%, has good flexibility, and is suitable for clamping and shooting.

[0109] Embodiment 2:

[0110] See also Figure 6-12 The present invention also provides a detection system for a double-sided detection device, comprising:

[0111] The mechanical motion module includes a speed control unit and a standby control unit, which are used to control the running speeds of the feed conveyor belt 1 and the discharge conveyor belt 2;

[0112] A visual communication module, including an image acquisition unit, a feature definition unit and a target detection unit, is used to control the operating state, image acquisition and image detection of the visual clamping component 3;

[0113] The sensor module includes a sensing detection unit, a signal transmission unit and a signal processing unit, and is used to control each group of sensors 9 inside the device and transmit their detection signals;

[0114] A data processing module, including an image processing unit, a decision control unit and a data storage unit, is used to receive data information sent by the mechanical motion module, the visual communication module and the data processing module, and process the data information to give corresponding feedback information;

[0115] An abnormality detection module, which is respectively connected to the visual communication module and the data processing module in communication, comprises an abnormality monitoring unit, an abnormality coding unit and an auxiliary decision-making unit, and is used to monitor abnormal states that may occur during the operation of the device and make corresponding feedback;

[0116] In the present invention, a signal processing unit is provided to filter and process the signal data in the transmission process, thereby avoiding signal transmission abnormality caused by signal waveform distortion caused by interference during the signal transmission process of the sensor 9. At the same time, when the filtered signal is read by the data processing module, the data processing module can omit the corresponding signal identification process, thereby improving the overall response speed of the system, and thus improving the detection efficiency of the system;

[0117] In addition, in the present invention, an abnormality detection module is also provided, including an abnormality monitoring unit, an abnormality coding unit and an auxiliary decision unit, which are used to monitor abnormal conditions that may be generated during the operation of the equipment and make corresponding feedback; by pre-entering the abnormal conditions that may be generated during the operation of the equipment into the database, and when the equipment operation abnormality occurs, the abnormal conditions can be coded and classified by the abnormal coding unit, so that the debugging personnel can quickly check the abnormal conditions of the equipment according to the abnormality code and the suggested processing method fed back at the touch digital display screen, thereby reducing the downtime loss caused by the equipment abnormality and further improving the detection efficiency of the equipment.

[0118] As a preferred embodiment, the speed control unit is communicatively connected with the sensor module, and controls the running speed of the feed conveyor belt 1 so that adjacent materials to be detected have a preset interval according to whether the sensor 9 arranged on the feed conveyor belt 1 detects the materials to be detected waiting to be transported;

[0119] The standby control unit is in communication connection with the sensor module, and determines whether the operation instruction needs to be executed according to whether the sensor 9 arranged on the discharge conveyor belt 2 detects the material waiting to be transported;

[0120] When there are no tobacco leaves waiting to be transported above the discharging conveyor belt 2, the discharging conveyor belt 2 is placed in a standby state to reduce energy loss.

[0121] As a preferred embodiment, the image acquisition unit is used to control the first shooting device 32 to shoot and collect images, the number of shots, and obtain the length and width information of the shot object; specifically, by setting its shooting frequency, the number of shots when the tobacco leaves pass by can be adjusted, and at the same time, the length and width of the current tobacco leaves are calculated according to the ratio between the pixel distance and the actual distance during the image calibration process;

[0122] The feature definition unit is used to define edge feature point information of the photographed object during image acquisition, and to determine the state of the photographed object by identifying the edge feature point information.

[0123] The target detection unit is used to detect whether there is a specific detection target in the photographed object, and transmit the detection data to the data processing module or the abnormality detection module according to the determination result.

[0124] As a preferred embodiment, the sensing detection unit is used to control the normal power supply and operation of each group of sensors 9 inside the device; at the same time, according to the different port codes of the sensors 9 arranged at different positions, a characteristic port code for synchronous transmission of the signal is given before the data transmission of the sensing signal is performed.

[0125] The signal transmission unit is used to transmit the sensing signal output by the sensor 9 to the data processing module in real time;

[0126] The signal processing unit is used to filter the sensor signal during the signal transmission process to improve the response efficiency of the subsequent data processing module to the sensor signal. The signal filtering algorithm is as follows:

[0127] Let the input signal be x(n), the filter weight be w(n), and the filter output be y(n);

[0128] Filter output calculation: y(n) = w(n)^T(n)*x(n), where w(n)^T(n) is the transpose of the filter weights;

[0129] According to the correlation between the error signal and the input signal, the filter weight is adjusted to reduce the error;

[0130] Weight update rule: w(n+1)=w(n)+\mue(n)*x(n), where \mue is an adaptability parameter.

[0131] By setting up a signal processing unit to filter and process the signal data in the transmission process, the signal waveform distortion caused by interference in the process of sensor 9 transmitting the signal can be avoided, causing signal transmission abnormality. At the same time, when the filtered signal is read by the data processing module, the data processing module can omit the corresponding signal identification process, thereby improving the overall response speed of the system and thus improving the detection efficiency of the system.

[0132] As a preferred embodiment, the image processing unit is used to pre-process the image information during the transmission process, and adjust the contrast and brightness information in the feedback image, and feed back the adjusted image information to the user interface module for the operator to review;

[0133] The decision control unit is used to coordinate the matching operation of the sensor module, the mechanical motion module, and the visual communication module; and according to the preset height difference between the two conveyor belts, the falling speed of the material, and the rotation speed of the feed conveyor belt 1, the start timing of the telescopic driving component 33 of the visual clamping assembly 3 and the shooting timing of the first shooting device 32 are calculated, so that the tobacco leaves can be squeezed and clamped by the transparent clamping plate 31 pushed by the telescopic driving component 33 during the falling process, and kept at the center position of the transparent clamping plate 31 to facilitate the first shooting device 32 to shoot and detect it;

[0134] The specific falling speed of the material can be obtained through preliminary experimental tests. When the adsorption component 5 is provided, the adsorption component 5 is conducive to the uniform falling speed of the tobacco leaves, so that it is easy to measure the falling speed V of the tobacco leaves. The distance S from the center position of the transparent clamping plate 31 to the end of the discharge conveyor belt 2 is determined, and then the time for the tobacco leaves to reach the center can be obtained through S / V to control the start timing of the telescopic driving component 33; the time for the tobacco leaves to reach the center of the transparent clamping plate 31 can also be obtained through multiple experiments, and then the average value is taken as the start timing of the telescopic driving component 33;

[0135] The data storage unit is used to match and store the captured material images and the corresponding detection data, and supports customized data tracing time. When the data stored in the data storage unit reaches the tracing time, the data storage unit will synchronize the corresponding tobacco leaf information data to the cloud data storage device and maintain sufficient data storage margin in the data storage unit.

[0136] As a preferred embodiment, the abnormality monitoring unit is used to monitor various abnormal conditions inside the device, and is also used to receive abnormal alarm information fed back from the sensor module, the mechanical motion module and the visual communication module and transmit it to the abnormality coding unit;

[0137] The abnormal coding unit is used to match the detected abnormal information with the abnormal fault coding information stored in the database, and after the abnormal fault coding is matched, it is fed back to the touch digital display screen to warn the operator to handle the abnormal state. At the same time, when the equipment leaves the factory, it will be equipped with an abnormal handling manual to record the fault abnormality number, so that people can understand the abnormal cause of the equipment through the fault manual or the touch digital display screen;

[0138] The auxiliary decision unit is used to perform fault analysis based on the abnormal fault coding information actually matched, and synchronously feed back the abnormal handling suggestions to the touch digital display screen to assist the operator in eliminating the abnormal state;

[0139] By pre-entering the abnormal conditions that may occur during the operation of the equipment into the database, and encoding and classifying the abnormal conditions through the abnormal coding unit when the equipment operates abnormally, the debugging personnel can quickly check the abnormal conditions of the equipment according to the abnormal codes and recommended processing methods fed back on the touch digital display screen, thereby reducing the downtime losses caused by equipment abnormalities and further improving the detection efficiency of the equipment.

[0140] As a preferred embodiment, the detection system of the double-sided detection device also includes a user interface module, including a UI distribution unit, a control feedback unit and a parameter setting unit; which is used to feed back the operating status of the equipment and the detection status of the visual communication module to the touch digital display screen of the processing terminal 8.

[0141] The UI distribution unit is used to control the operation button UI data in the touch digital display screen, and transmit the operator's operation control information to the control feedback unit for control information processing according to the set operation button UI; the control feedback unit is used to receive the control information triggered by each button in the UI distribution unit, and can control the touch screen page to jump to the specified feedback page after receiving the corresponding control information; the parameter setting unit is used to adjust the various parameters of the device during operation through the touch digital display screen, and synchronize the corresponding parameter change information to each group of servo motors and sensors 9 inside the device after people adjust the parameters through the touch digital display screen.

[0142] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A double-sided detection device, It is characterized in that include: Feed conveyor belt, used to convey materials to be tested from outside; The discharging conveyor belt is staggered and docked with the feeding conveyor belt up and down, and has a preset height difference with the feeding conveyor belt; Visual clamping components are arranged in pairs in the drop space at the joint of the two conveyor belts, and are used to clamp and photograph the two opposite sides of the material to be inspected that falls from the feed conveyor belt; The visual clamping assembly includes a transparent clamping plate, a first shooting device arranged behind the clamping plate, and a telescopic driving component for driving the transparent clamping plate to extend and retract.

2. A double-sided detection device according to claim 1, It is characterized in that A second photographing device is also provided directly above the feed conveyor belt, for preliminarily acquiring shape information of the material to be inspected on the feed conveyor belt; The second camera is communicatively connected to the first camera, and is used to transmit the shape information of the material to be detected obtained by the second camera to the first camera, and the first camera automatically adjusts the focus according to the received shape information of the material to be detected.

3. A double-sided detection device according to claim 1 or 2, It is characterized in that The double-sided detection device also includes an adsorption component, which is arranged at the butt end of the discharge conveyor belt and is located between the visual clamping component and the discharge conveyor belt, and is used to assist the material to be detected to fall at a uniform speed so that the visual clamping component can accurately clamp the material to be detected.

4. A double-sided detection device according to claim 1 or 2, It is characterized in that The visual clamping assembly further includes a support block and a fill light source, and the first shooting device is arranged in the middle of the support block; The telescopic driving components are arranged in pairs on both sides of the first shooting device, and the driving ends thereof are telescopically connected to the transparent clamping plate; The fill light source can be rotatably arranged on the supporting block and is located between the first shooting device and the telescopic driving component.

5. A double-sided detection device according to claim 3, It is characterized in that A weighing roller is also provided inside the feed conveyor belt to obtain the weight information of the material to be tested thereon; The weighing roller is in communication connection with the adsorption component and is used to adjust the suction force of the adsorption component according to the weight information of the corresponding material to be detected obtained by the weighing roller.

6. A detection system for a double-sided detection device, It is characterized in that include: A mechanical motion module, including a speed control unit and a standby control unit, for controlling the running speeds of the feed conveyor belt and the discharge conveyor belt; A visual communication module, including an image acquisition unit, a feature definition unit and a target detection unit, is used to control the operation state, image acquisition and image detection of the visual clamping component; The sensor module includes a sensing detection unit, a signal transmission unit and a signal processing unit, and is used to control each group of sensors inside the device and transmit their detection signals; A data processing module, including an image processing unit, a decision control unit and a data storage unit, is used to receive data information sent by the mechanical motion module, the visual communication module and the data processing module, and process the data information to give corresponding feedback information; The abnormality detection module is respectively connected to the visual communication module and the data processing module in communication, and includes an abnormality monitoring unit, an abnormality coding unit and an auxiliary decision-making unit, which are used to monitor abnormal states that may occur during the operation of the device and make corresponding feedback.

7. A double-sided detection device according to claim 6, It is characterized in that The speed control unit is in communication with the sensor module, and controls the running speed of the feed conveyor belt so that adjacent materials to be detected have a preset interval according to whether the sensor arranged on the feed conveyor belt detects the materials to be detected waiting to be transported; The standby control unit is in communication connection with the sensor module, and determines whether an operation instruction needs to be executed according to whether a sensor arranged on the discharge conveyor belt detects materials waiting to be transported.

8. A double-sided detection device according to claim 6 or 7, It is characterized in that The image acquisition unit is used to control the first shooting device to shoot and collect images, the number of shots, and obtain the length and width information of the shot object; The feature definition unit is used to define edge feature point information of the photographed object during image acquisition, and to determine the state of the photographed object by identifying the edge feature point information. The target detection unit is used to detect whether there is a specific detection target in the photographed object, and transmit the detection data to the data processing module or the abnormality detection module according to the determination result.

9. A double-sided detection device according to claim 6 or 7, It is characterized in that The sensor detection unit is used to control the normal power supply and operation of each group of sensors inside the device; at the same time, according to the different port codes of sensors set at different positions, a characteristic port code for synchronous transmission of the signal is given before the data transmission of the sensor signal is carried out. The signal transmission unit is used to transmit the sensing signal output by the sensor to the data processing module in real time; The signal processing unit is used to filter the sensing signal during signal transmission.

10. A double-sided detection device according to claim 6 or 7, It is characterized in that The image processing unit is used to pre-process the image information during the transmission process; The decision control unit is used to coordinate the matching operation of the sensor module, the mechanical motion module, and the visual communication module; and calculate the start timing of the telescopic drive component of the visual clamping assembly and the shooting timing of the first shooting device according to the preset height difference between the two conveyor belts, the falling speed of the material, and the rotation speed of the feed conveyor belt; The data storage unit is used to match and store the captured material images and corresponding detection data.

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