CN107389694A - A kind of more ccd video camera synchronous signal acquisition apparatus and method - Google Patents

A kind of more ccd video camera synchronous signal acquisition apparatus and method Download PDF

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Publication number
CN107389694A
CN107389694A CN201710748686.6A CN201710748686A CN107389694A CN 107389694 A CN107389694 A CN 107389694A CN 201710748686 A CN201710748686 A CN 201710748686A CN 107389694 A CN107389694 A CN 107389694A
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CN
China
Prior art keywords
conveyer belt
ccd video
potato
level conveyer
level
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Pending
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CN201710748686.6A
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Chinese (zh)
Inventor
汤全武
汤哲君
李晨
史崇升
周金龙
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Ningxia University
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Ningxia University
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Priority to CN201710748686.6A priority Critical patent/CN107389694A/en
Publication of CN107389694A publication Critical patent/CN107389694A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/89Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901Optical details; Scanning details
    • G01N21/8903Optical details; Scanning details using a multiple detector array
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/89Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8914Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the material examined
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N2021/8466Investigation of vegetal material, e.g. leaves, plants, fruits
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00Features of devices classified in G01N21/00
    • G01N2201/10Scanning
    • G01N2201/102Video camera
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00Features of devices classified in G01N21/00
    • G01N2201/12Circuits of general importance; Signal processing
    • G01N2201/126Microprocessor processing

Abstract

The invention discloses a kind of more ccd video camera synchronous signal acquisition device and methods, harvester includes light optional equipment, one-level conveyer belt, two level conveyer belt;Two level conveyer belt is arranged at the rear side lower end of one-level conveyer belt;Arranged in space of the light optional equipment between two conveyer belts in positive tetrahedron;Photoelectric sensor is provided with above the rear end of one-level conveyer belt;The output end of photoelectric sensor is connected by wire with synchronizing signal controller;The output end of synchronizing signal controller is connected with light optional equipment;The potato image information that light optional equipment collects is sent in main control computer by PCI-Express.The present invention realizes that the synchronous of signal is triggered by synchronizing signal controller, has the advantages of triggering precision is high, it is ensured that property while shooting image, improve the acquisition authenticity of potato surface information;In addition, by the synchronous acquisition of multiple video cameras, the same area multiple images can be achieved without dead angle synchronous acquisition, material is provided for panoramic mosaic.

Description

A kind of more ccd video camera synchronous signal acquisition apparatus and method
Technical field
The present invention relates to a kind of harvester and method, more particularly to a kind of more ccd video camera synchronous signal acquisition devices With method.
Background technology
The automation classification of potato is to promote the value-added important channel of potato.Machine vision technique has real-time, visitor The advantages that seeing, be lossless, it is adapted to be classified the agricultural product including potato according to external sort.With machine vision Fast development, the multi-vision visual of initial monocular vision, binocular vision till now.Multi-vision visual is because can be from more polygonal The observation object of degree, obtains more three-dimensional informations, is increasingly paid close attention to by machine vision researcher.But at the same time, increase Add the number of video camera, the problem of also just bringing multiple-camera Synchronization Control.The synchronous control mode of traditional multiple-camera is Software controls, i.e., carrying out Initialize installation to video camera by software is simultaneously emitted by trigger signal, and driving multiple-camera is synchronously right Object carries out IMAQ.But requirement of this control mode for trigger signal is higher, because sending multichannel by software Trigger signal, can because cause synchronous precision very low the reason for electrical equipment and circuit itself, even if using trigger signal all the way, Can be because the delay of triggering circuit causes the asynchronous of triggering.
The content of the invention
In order to solve the weak point present in above-mentioned technology, the invention provides a kind of more ccd video camera synchronizing signals Harvester and method.
In order to solve the above technical problems, the technical solution adopted by the present invention is:A kind of more ccd video camera synchronizing signals are adopted Acquisition means, including light optional equipment, one-level conveyer belt, two level conveyer belt, synchronizing signal controller;Two level conveyer belt is arranged at one-level The rear side lower end of conveyer belt;Level interval, vertical interval between one-level conveyer belt and two level conveyer belt are with potato from one-level It is foundation on safe falling to two level conveyer belt after being dished out in conveyer belt;
Light optional equipment is divided into No.1 ccd video camera, No. two ccd video cameras, No. three ccd video cameras, No. four CCD video cameras; No.1 ccd video camera, No. two ccd video cameras, No. three ccd video cameras, No. four ccd video cameras transmit in one-level conveyer belt and two level Arranged in space between band in positive tetrahedron, for carrying out the bat at comprehensive no dead angle to it in potato descent According to;
Photoelectric sensor is provided with above the rear end of one-level conveyer belt;The output end of photoelectric sensor by wire with it is synchronous Signal controller is connected;The output end of synchronizing signal controller is taken the photograph with No.1 CCD video cameras, No. two CCD respectively by wire Camera, No. three ccd video cameras, No. four ccd video cameras are connected;
Photoelectric sensor detect potato since the rear end of one-level conveyer belt by and will level throw motion when, will examine Survey signal and be sent to synchronizing signal controller in real time, four ccd video cameras are controlled under the control action of synchronizing signal controller The potato dished out is synchronized and taken pictures, ensures image information while property;
The potato that No.1 ccd video camera, No. two ccd video cameras, No. three ccd video cameras, No. four ccd video cameras collect Surface image information is sent in main control computer by the PCI-Express of four-way;Main control computer divides image information After analysis processing, the potato self-grading device to two level conveyer belt rear end sends control signal, realize to potato defect and The classification of size.
Collect conveying device with potato and be connected in the front end of one-level conveyer belt;The transporting velocity of one-level conveyer belt is compared with Ma Ling It is fast that potato collects conveying device, the transporting velocity of two level conveyer belt, is easy to pull open the transmission range between adjacent potato, convenient to clap According to.
Synchronizing signal controller is also connected by wire with main control computer, and synchronizing signal controller is receiving photoelectricity After the signal that sensor is sent, four ccd video cameras of control, which synchronize, under the control action of main control computer takes pictures.
Vertical interval between one-level conveyer belt and two level conveyer belt is 1-10cm.
One-level conveyer belt, the lower end of two level conveyer belt are respectively arranged with No.1 variable-frequency motor, No. two variable-frequency motors.
A kind of more ccd video camera synchronous signal acquisition methods, its overall step are as follows:
Ith, the transmission speed of one-level conveyer belt and two level conveyer belt is adjusted, while adjusts the two level interval and Vertical Square Upward distance of rising and falling, allows potato to be dropped down onto from one-level conveyer belt upthrow on two level conveyer belt, and will not be to potato Cause to damage;
IIth, when potato reaches the end of one-level conveyer belt, photoelectric sensor sends detection to synchronizing signal controller Signal;Synchronizing signal controller sends synchronizing signal to four ccd video cameras immediately after detection signal is received;Four CCD Video camera is after synchronizing signal is received while starts, and 360 ° of IMAQs without dead angle are carried out to potato;
IIIth, obtained image information is passed through CAT by four ccd video cameras after potato surface image information is collected Netting twine sends the data buffer area of PCI-Express to;PCI-Express is again conveyed the great amount of images data received by pci interface Into main control computer;
IVth, main control computer handles out control signal and is sent to Ma Ling after the image of ccd video camera collection is received Potato self-grading device, so as to realize damage and the weight grading to potato.
The present invention realizes that the synchronous of signal is triggered by synchronizing signal controller, has the advantages of triggering precision is high, can be with Ensure shooting image while property, improve the acquisition authenticity of potato surface information;In addition, the synchronization by multiple video cameras Collection, the same area multiple images can be achieved without dead angle synchronous acquisition, so as to provide material for panoramic mosaic.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the circuit control principle figure of synchronizing signal controller.
Fig. 3 is the square-wave signal flow chart of single-chip microcomputer.
In figure:1st, No.1 ccd video camera;2nd, No. two ccd video cameras;3rd, No. three ccd video cameras;4th, No. four ccd video cameras; 5th, one-level conveyer belt;6th, two level conveyer belt;7th, No.1 variable-frequency motor;8th, No. two variable-frequency motors;9th, potato;10th, PCI-Express; 11st, synchronizing signal controller;12nd, main control computer;13rd, wire;14th, CAT netting twines;15th, photoelectric sensor.
Embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
As shown in figure 1, a kind of more ccd video camera synchronous signal acquisition devices include light optional equipment, one-level conveyer belt 5, two Level conveyer belt 6, synchronizing signal controller 11;Two level conveyer belt 6 is arranged at the rear side lower end of one-level conveyer belt 5;One-level conveyer belt 5 Safe falling is to two after level interval, vertical interval between two level conveyer belt 6 are dished out with potato from one-level conveyer belt 5 It is foundation on level conveyer belt 6;
Light optional equipment is divided into the ccd video camera 3, four of ccd video camera 2, three of No.1 ccd video camera 1, two CCD shootings Machine 4;3, No. four CCD video cameras 4 of ccd video camera of ccd video camera 2, three of No.1 ccd video camera 1, two are in one-level conveyer belt 5 Arranged in space between two level conveyer belt 6 in positive tetrahedron, it is comprehensive for being carried out in potato descent to it Taking pictures without dead angle;Ccd video camera can be set up on camera mount.
Photoelectric sensor 15 is provided with above the rear end of one-level conveyer belt 5;The output end of photoelectric sensor 15 passes through wire 13 are connected with synchronizing signal controller 11;The output end of synchronizing signal controller 11 is imaged with No.1 CCD respectively by wire 3, No. four ccd video cameras 4 of ccd video camera of ccd video camera 2, three of machine 1, two are connected;
Photoelectric sensor 15 detect potato since the rear end of one-level conveyer belt 5 by and will level throw motion when, Detection signal is sent to synchronizing signal controller 11 in real time, four are controlled under the control action of synchronizing signal controller 11 Ccd video camera is synchronized to the potato dished out and taken pictures, and ensures image information while property;
The horse that 3, No. four ccd video cameras 4 of ccd video camera of ccd video camera 2, three of No.1 ccd video camera 1, two collect Bell potato surface image information is sent in main control computer 12 by the PCI-Express 10 of four-way;Main control computer 12 is to image After information is analyzed and processed, the potato self-grading device to the rear end of two level conveyer belt 6 sends control signal, realizes to horse The classification of bell potato defect and size.
Collect conveying device with potato and be connected in the front end of one-level conveyer belt 5;The transporting velocity of one-level conveyer belt 5 is compared with horse It is fast that bell potato collects conveying device, the transporting velocity of two level conveyer belt 6, is easy to pull open the transmission range between adjacent potato, side Just take pictures, but they are uniform motion.
Synchronizing signal controller 11 is also connected by wire with main control computer 12, and synchronizing signal controller 11 is connecing After receiving the signal that photoelectric sensor 15 is sent, four ccd video cameras are controlled to enter under the control action of main control computer 12 Row synchronous photo taking.
Vertical interval between one-level conveyer belt 5 and two level conveyer belt 6 is 1-10cm, it is ensured that is pacified after the flat throwing of potato It is high-fall fall not damaged.
One-level conveyer belt 5, the lower end of two level conveyer belt 6 are respectively arranged with 7, No. two variable-frequency motors 8 of No.1 variable-frequency motor, lead to The transmission speed of conveyer belt is adjusted the rotating speed for overregulating variable-frequency motor.
A kind of more ccd video camera synchronous signal acquisition methods, its overall step are as follows:
Ith, the transmission speed of one-level conveyer belt 5 and two level conveyer belt 6 is adjusted, while adjusts the level interval and vertical of the two Distance of rising and falling on direction, potato is set to be dropped down onto from the upthrow of one-level conveyer belt 5 on two level conveyer belt 6, and will not be to horse Bell potato causes to damage;
IIth, when potato reaches the end of one-level conveyer belt 5, photoelectric sensor 15 is sent to synchronizing signal controller 11 Detection signal;Synchronizing signal controller 11 sends synchronizing signal to four ccd video cameras immediately after detection signal is received;Four Platform ccd video camera is after synchronizing signal is received while starts, and 360 ° of IMAQs without dead angle are carried out to potato;
IIIth, obtained image information is passed through CAT by four ccd video cameras after potato surface image information is collected Netting twine 14 sends the data buffer area of PCI-Express 10 to;PCI-Express 10 is again connect the great amount of images data received by PCI Mouth is delivered in main control computer 12;
IVth, main control computer 12 handles out control signal and is sent to horse after the image of ccd video camera collection is received Bell potato self-grading device, so as to realize damage and the weight grading to potato.
Synchronizing signal controller 11 in the present invention by STC89C52 single chip, 1602 liquid crystal displays, amplifying circuit and Matrix keyboard forms, and its circuit control principle figure is as shown in Figure 2.It make use of the timer module of single-chip microcomputer, and generation can touch The square-wave signal of ccd video camera collection is sent out, simultaneously because the voltage that single-chip microcomputer individually exports does not meet the trigger voltage of camera, is made The amplification to voltage is realized with amplifying circuit, meets the triggering requirement for voltage to camera.The main function of matrix keyboard It is to realize the setting to square wave signal frequency and dutycycle, 1602 liquid crystal displays are primarily to the square wave of real-time display output The frequency and dutycycle of signal.
Wherein, the square-wave signal flow chart of single-chip microcomputer is as shown in Figure 3.The present invention to the timing function of single-chip microcomputer by setting Put, realize the control to low and high level output time, and then obtain triggering the pulse signal of camera collection.Can by Fig. 3 Know, whether the mode inquired about using single-chip microcomputer, the count value for understanding low and high level in real time meets count requirement, accelerates CPU place The time is managed, realizes the real-time output of waveform.
The present invention is realized using the scheme of flat throwing and machine vision technique and the complete of potato integral surface information is adopted Collection, at the same control the quality of feed belt and the movement velocity of two conveyer belts and both horizontally and vertically on distance, It ensure that potato will not be by too big impact after falling so that potato surface will not be by secondary damage.
Above-mentioned embodiment is not limitation of the present invention, and the present invention is also not limited to the example above, this technology neck The variations, modifications, additions or substitutions that the technical staff in domain is made in the range of technical scheme, also belong to this hair Bright protection domain.

Claims (6)

  1. A kind of 1. more ccd video camera synchronous signal acquisition devices, it is characterised in that:It includes light optional equipment, one-level conveyer belt (5), two level conveyer belt (6), synchronizing signal controller (11);After the two level conveyer belt (6) is arranged at one-level conveyer belt (5) Side lower end;Level interval, vertical interval between one-level conveyer belt (5) and two level conveyer belt (6) are transmitted with potato from one-level On safe falling to two level conveyer belt (6) it is foundation after being dished out in band (5);
    The smooth optional equipment be divided into No.1 ccd video camera (1), No. two ccd video cameras (2), No. three ccd video cameras (3), No. four Ccd video camera (4);The No.1 ccd video camera (1), No. two ccd video cameras (2), No. three ccd video cameras (3), No. four CCD take the photograph Arranged in space of the camera (4) between one-level conveyer belt (5) and two level conveyer belt (6) in positive tetrahedron, in potato Comprehensive no dead angle is carried out in descent to it to take pictures;
    Photoelectric sensor (15) is provided with above the rear end of the one-level conveyer belt (5);The output of the photoelectric sensor (15) End is connected by wire (13) with synchronizing signal controller (11);The output end of the synchronizing signal controller (11) is by leading Line respectively with No.1 ccd video camera (1), No. two ccd video cameras (2), No. three ccd video cameras (3), No. four ccd video camera (4) phases Connection;
    The photoelectric sensor (15) detect potato since the rear end of one-level conveyer belt (5) by and will level throw motion When, detection signal is sent to synchronizing signal controller (11) in real time, controlled under the control action of synchronizing signal controller (11) Four ccd video cameras of system synchronize to the potato dished out takes pictures, and ensures image information while property;
    The No.1 ccd video camera (1), No. two ccd video cameras (2), No. three ccd video cameras (3), No. four ccd video cameras (4) are adopted The potato surface image information collected is sent in main control computer (12) by the PCI-Express (10) of four-way;The master After control computer (12) analyzes and processes to image information, to the potato self-grading device of two level conveyer belt (6) rear end Control signal is sent, realizes the classification to potato defect and size.
  2. 2. more ccd video camera synchronous signal acquisition devices according to claim 1, it is characterised in that:The one-level transmission Collect conveying device with potato and be connected in the front end of band (5);The transporting velocity of one-level conveyer belt (5) collects conveying compared with potato Device, the transporting velocity of two level conveyer belt (6) are fast, are easy to pull open the transmission range between adjacent potato, conveniently take pictures.
  3. 3. more ccd video camera synchronous signal acquisition devices according to claim 1, it is characterised in that:The synchronizing signal Controller (11) is also connected by wire with main control computer (12), and synchronizing signal controller (11) is receiving photoelectric sensing After the signal that device (15) is sent, four ccd video cameras are controlled to synchronize bat under the control action of main control computer (12) According to.
  4. 4. more ccd video camera synchronous signal acquisition devices according to claim 1 or 2, it is characterised in that:The one-level passes It is 1-10cm to send the vertical interval between band (5) and two level conveyer belt (6).
  5. 5. more ccd video camera synchronous signal acquisition devices according to claim 4, it is characterised in that:The one-level transmission Band (5), the lower end of two level conveyer belt (6) are respectively arranged with No.1 variable-frequency motor (7), No. two variable-frequency motors (8).
  6. A kind of 6. more ccd video camera synchronous signal acquisition methods, it is characterised in that:The overall step of methods described is as follows:
    Ith, one-level conveyer belt (5) and the transmission speed of two level conveyer belt (6) are adjusted, while adjusts the level interval and vertical of the two Distance of rising and falling on direction, potato is set to be dropped down onto from one-level conveyer belt (5) upthrow on two level conveyer belt (6), and will not Potato is caused to damage;
    IIth, when potato reaches the end of one-level conveyer belt (5), photoelectric sensor (15) is sent out to synchronizing signal controller (11) Go out detection signal;Synchronizing signal controller (11) sends synchronizing signal and imaged to four CCD immediately after detection signal is received Machine;Four ccd video cameras are after synchronizing signal is received while start, and 360 ° of IMAQs without dead angle are carried out to potato;
    IIIth, obtained image information is passed through CAT netting twines by four ccd video cameras after potato surface image information is collected (14) data buffer area of PCI-Express (10) is sent to;The great amount of images data received are passed through PCI by PCI-Express (10) again Interface is delivered in main control computer (12);
    IVth, main control computer (12) handles out control signal and is sent to Ma Ling after the image of ccd video camera collection is received Potato self-grading device, so as to realize damage and the weight grading to potato.
CN201710748686.6A 2017-08-28 2017-08-28 A kind of more ccd video camera synchronous signal acquisition apparatus and method Pending CN107389694A (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108253908A (en) * 2017-12-29 2018-07-06 浙江大学 The image detecting method of contact point radius of curvature in a kind of potato compression test
CN109100364A (en) * 2018-06-29 2018-12-28 杭州国翌科技有限公司 A kind of tunnel defect monitoring system and monitoring method based on spectrum analysis
CN110567371A (en) * 2018-10-18 2019-12-13 天目爱视(北京)科技有限公司 Illumination control system for 3D information acquisition

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108253908A (en) * 2017-12-29 2018-07-06 浙江大学 The image detecting method of contact point radius of curvature in a kind of potato compression test
CN108253908B (en) * 2017-12-29 2019-08-30 浙江大学 The image detecting method of contact point radius of curvature in a kind of potato compression test
CN109100364A (en) * 2018-06-29 2018-12-28 杭州国翌科技有限公司 A kind of tunnel defect monitoring system and monitoring method based on spectrum analysis
CN110567371A (en) * 2018-10-18 2019-12-13 天目爱视(北京)科技有限公司 Illumination control system for 3D information acquisition

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