CN112931445A - Detection device, system and method for sensing quantity and area of tea garden pests based on laser - Google Patents
Detection device, system and method for sensing quantity and area of tea garden pests based on laser Download PDFInfo
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- CN112931445A CN112931445A CN202110119466.3A CN202110119466A CN112931445A CN 112931445 A CN112931445 A CN 112931445A CN 202110119466 A CN202110119466 A CN 202110119466A CN 112931445 A CN112931445 A CN 112931445A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M1/00—Stationary means for catching or killing insects
- A01M1/02—Stationary means for catching or killing insects with devices or substances, e.g. food, pheronones attracting the insects
- A01M1/026—Stationary means for catching or killing insects with devices or substances, e.g. food, pheronones attracting the insects combined with devices for monitoring insect presence, e.g. termites
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M1/00—Stationary means for catching or killing insects
- A01M1/08—Attracting and catching insects by using combined illumination or colours and suction effects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M1/00—Design features of general application
- G06M1/27—Design features of general application for representing the result of count in the form of electric signals, e.g. by sensing markings on the counter drum
- G06M1/272—Design features of general application for representing the result of count in the form of electric signals, e.g. by sensing markings on the counter drum using photoelectric means
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Abstract
The invention relates to a detection device, a system and a method for sensing the quantity and the area of pests in a tea garden based on laser, wherein the device mainly comprises: the device comprises a funnel-shaped perforated wind scooper, a square plate, a connecting arm, an organic glass cylindrical channel, an equilateral triangle groove body, a linear laser, a CCD image sensor, a pest measuring circuit and a shell; the bottom of the funnel-shaped perforated wind scooper is respectively connected with the organic glass cylindrical channel, the connecting plate and the equilateral triangle groove body; the connecting plate is arranged between the bottom of the funnel-shaped perforated wind scooper and the bottom of the equilateral triangle groove body; the square plate is connected with the connecting plate through a connecting arm; the linear laser and the CCD image sensor are arranged in the equilateral triangle groove body, and the organic glass cylindrical channel is arranged in the center of the equilateral triangle groove body; the inner side of the top of the shell is provided with an inner convex sheet. The invention can realize the detection of the area of the pests while counting through laser, and has the advantages of high detection efficiency, accurate detection, high reliability, no need of frequent maintenance and the like.
Description
Technical Field
The invention relates to the technical field of insect pest quantity detection in digital agriculture, in particular to a device, a system and a method for detecting the quantity and the area of insects in a tea garden based on laser sensing.
Background
The agricultural informatization process is a process of continuously expanding the application and service of information technology in the agricultural field, the agricultural resource environment informatization is the embodiment of information agriculture, the agriculture will develop towards digitization, intellectualization and automation in the future, and pests are used as key prevention and control objects for tea protection and are important factors for restricting the quality of tea products. The monitoring of tea garden insect pest can effectively master the pest situation of tea tree, and the ecology in tea garden is fed back from the side simultaneously, is favorable to the healthy development in ecological tea garden. At present, pesticides are the main means for solving insect pests, so that the life health problems of human beings such as pesticide residues of tea leaves and soil and the environmental problems are caused, however, the pesticides are not the fundamental way for controlling the insect pests, the pesticides should not appear in an ecological tea garden, certain relevance exists between the insect pests and the use of the pesticides, whether the pesticides are used in the tea garden can be fed back from the side surface in the monitoring of the insect pests, and therefore the insect pests are the important indexes of the ecological tea garden. In the period of rapid development of block chains, the tea garden pest damage data are linked to just meet the product tracing requirements of tea consumers.
The current insect pest monitoring mainly utilizes a broad-spectrum light source to lure, farmers count the insect pest situation in the field, the workload is large, the time consumption is long, the cost is high, the method is limited by reasons such as weather and manpower, the method is only suitable for small-scale agriculture, and the electronic technology can be applied to insect pest monitoring in areas with large areas and wide area distribution, so that the labor force of the farmers can be released, and the insect pest monitoring can be continuously and efficiently carried out. The method for applying voltage and current pulses to insect pest counting has the defects of low detection precision, high energy consumption and the like, and has safety risk, the method for applying the insect pest image counting can obtain image feedback and the area size of insect pests, but has the problems of complex mechanism, complex algorithm, easiness in being influenced by illumination conditions and the like, and the photographed surface is easy to be dirty, so that false detection is caused, frequent maintenance is required and the like.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides the detection device, the detection system and the detection method for sensing the quantity and the area of the pests in the tea garden based on the laser, the detection of the area of the pests is realized while the laser counting is carried out, and the detection device has the advantages of high detection efficiency, accurate detection, high reliability, no need of frequent maintenance and the like.
The device of the invention is realized by adopting the following technical scheme: a detection device based on laser perception tea garden pest quantity and area mainly includes: the device comprises a funnel-shaped perforated wind scooper, a square plate, a connecting arm, an organic glass cylindrical channel, an equilateral triangle groove body, a linear laser, a CCD image sensor, a pest measuring circuit and a shell;
the bottom of the funnel-shaped perforated wind scooper is respectively connected with the organic glass cylindrical channel, the connecting plate and the equilateral triangle groove body;
the connecting plate is arranged between the bottom of the funnel-shaped perforated wind scooper and the bottom of the equilateral triangle groove body, and a screw hole is drilled on the connecting plate and used for connecting and fixing the funnel-shaped perforated wind scooper and the equilateral triangle groove body;
the edge of the square plate is provided with a plurality of screw holes which are connected with the connecting plate through connecting arms;
the linear laser and the CCD image sensor are arranged in the equilateral triangle groove body, the organic glass cylindrical channel is arranged in the center of the equilateral triangle groove body and is penetrated to the bottom of the equilateral triangle groove body by the funnel-shaped perforated wind scooper;
the inner side of the top of the shell is provided with an inner convex sheet, and the bottom of the shell is provided with an outer concave clip.
The invention relates to a detection system for sensing the quantity and the area of pests in a tea garden based on laser, which is based on the detection device for sensing the quantity and the area of the pests in the tea garden based on laser, and mainly comprises:
a laser counting module: the laser counting device comprises a funnel-shaped perforated wind scooper module, a square plate module, a connecting arm module, an organic glass cylindrical channel module, an equilateral triangle groove body module, a pest measuring circuit and a shell module, wherein all parts of the laser counting module are fixedly connected in a screw and nut mode and are used for counting pests;
a word laser power control module: the laser device is used for emitting the linear laser to irradiate the CCD image sensor control module to form a triangular laser surface;
CCD image sensor control module: the pest number is used for detecting the laser signal.
The invention relates to a detection method for sensing the quantity and the area of pests in a tea garden based on laser, which is based on the detection device and the detection system for sensing the quantity and the area of the pests in the tea garden based on the laser, and mainly comprises the following steps:
s1, powering on the module, supplying voltage to the laser counting module by using a power supply, lighting the trap lamp, starting the operation of the insect suction fan, emitting a linear laser by the linear laser, irradiating the linear laser on a high-sensitivity semiconductor material of the CCD image sensor, converting the laser into charges, converting the charges into digital signals by the analog-to-digital converter chip, starting the detection of the laser signals by the CCD image sensor, and returning the counter to zero;
s2, the pest is led to the vicinity of the lamp body by the trap lamp, the pest is sucked into the funnel-shaped perforated wind guide cover by the pest sucking fan positioned below the lamp body, and the pest is converged to the small round hole at the bottom of the funnel-shaped perforated wind guide cover from the large round hole at the top of the funnel-shaped perforated wind guide cover and then enters the organic glass cylindrical channel;
s3, under the wind pressure of the insect suction fan, pests pass through the triangular laser surface through the organic glass cylindrical channel, the pests block part of the laser light path due to self pests, so that laser signals are changed, the number output by the CCD image sensor is changed, and if the AD value of the image sensing unit is greater than 190 and the number of the image sensing unit is greater than 5, the counter is increased by 1, so that the number information of the pests is obtained;
and S4, acquiring the area size information of the pests.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the pest counting device adopts the light emitting path of the laser and the photosensitive principle of the CCD image sensor to count pests, and has the advantages of low cost, high detection accuracy, low power consumption, simple maintenance and stable work.
2. The funnel-shaped perforated wind scooper adopted by the invention has a rectification effect, the small holes on the conical surface of the funnel-shaped perforated wind scooper have the effect of reducing the wind pressure, so that the wind pressure in the funnel-shaped perforated wind scooper is kept in a proper range, pests are pushed to smoothly enter the laser counting module and pass through the laser plane at a proper speed, the counting accuracy is improved, the captured pests fall in a smaller area through the funnel-shaped perforated wind scooper, the use of materials is saved, the volume of the counting module is reduced, the pests with smaller volume can also generate obvious electric signal change, the interference is reduced, and the detection accuracy is improved.
3. The linear laser and the CCD image sensor are arranged in the mounting groove corresponding to the equilateral triangle groove body, the equilateral triangle groove body is independent of other parts, the laser and the CCD image sensor are well restrained by the equilateral triangle groove body, the equilateral triangle groove body is small in size, assembly errors between the laser and the CCD image sensor are reduced, meanwhile, the horizontal angle of the emitting surface of the laser is convenient to adjust, laser can be projected onto the effective detection surface of the CCD image sensor, the equilateral triangle groove body is mainly in an equilateral triangle shape, is in the most stable structure, is in the structure with the smallest deformation when in use, and the reliability of the method is effectively improved.
4. The laser counting module is an independent module, the top of the shell of the laser counting module is provided with the inner protruding piece, the bottom of the shell is provided with the outer concave clamp, all parts of the counting module are installed in the shell of the module and are connected with the trap lamp, the insect sucking fan and the insect collecting net in a buckling mode, the laser counting module is high in practicability, convenient to detach, maintain and save time, and meanwhile the laser counting module can be connected with other modules in a combined mode, such as a pest image acquisition module or an environment acquisition module, the laser counting module has high flexibility, the counting module only needs to be considered independently when the laser counting module is modified and upgraded, other modules connected with the laser counting module do not need to be considered, the research and development time is saved while the research and development cost is reduced, and.
5. The laser counting module part is connected with the shell by only one plane, the periphery of the top of the shell is provided with the rectangular convex blocks and the screw holes for supporting and fixing the top surface of the funnel-shaped perforated wind guide cover, the top surface of the funnel-shaped perforated wind guide cover is taken as a reference surface, other parts are connected from top to bottom, other parts except the wind guide cover are not connected with the shell, the part installation deviation caused by machining errors is reduced, the reliability and the accuracy of the method are improved, and meanwhile, the method is beneficial to installation and disassembly of the parts and the shell.
6. The organic glass grating cylindrical channel is used for isolating pests from directly contacting the linear laser and the CCD image sensor, so that the pests smoothly pass through a laser surface, and meanwhile, after the equilateral triangle groove body and the organic glass cylindrical channel are installed, the linear laser and the CCD image sensor are in a sealed environment, so that the condition of dust accumulation caused by the passing of the pests is avoided, and the detection accuracy is improved.
7. The triangular body is arranged at the corner of the connecting arm, so that the module is prevented from being deformed laterally, and the strength and the reliability of the connecting piece are improved.
8. The part design of the invention takes the practicability and the difficulty degree of machining into consideration, reduces the difficulty of part machining, ensures that parts are easy to assemble and disassemble, reduces the cost and saves the machining time, adopts the screw and nut mode for part connection, reduces the cost by using uniform screw and nut and is convenient to maintain.
Drawings
FIG. 1 is a schematic diagram of the structural distribution of the apparatus of the present invention;
FIG. 2 is a schematic diagram of the operation of a line laser and a CCD image sensor of the present invention;
FIG. 3 is a schematic view of the complete installation of the device of the present invention;
FIG. 4 is a schematic view of a funnel-shaped perforated wind scooper of the present invention;
FIG. 5 is a schematic view of an equilateral triangular trough structure according to the present invention;
FIG. 6 is a schematic view of the housing construction of the present invention;
FIG. 7 is a schematic diagram of a word line laser control module of the present invention;
FIG. 8 is a schematic diagram of a CCD image sensor control module of the present invention;
FIG. 9 is a process flow diagram of the present invention;
FIG. 10 is a schematic diagram of the area calculation method of the present invention;
in the figure, 1 is funnel-shaped perforated wind scooper, 2 is square plate, 3 is connecting plate, 4 is connecting arm, 5 is organic glass cylindrical channel, 6 is equilateral triangle cell body, 7 is a word line laser, 8 is CCD image sensor, 9 is pest measuring circuit and shell, 10 is pest, 41 is funnel-shaped perforated wind scooper top big round hole, 42 is funnel-shaped perforated wind scooper conical surface, 43 is funnel-shaped perforated wind scooper conical surface pressure relief hole, 44 is funnel-shaped perforated wind scooper bottom small round hole, 51 is CCD image sensor's mounting groove, 52 is organic glass cylindrical channel bracket, 53 is walking hole, 54 is the mounting groove of word line laser.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Examples
As shown in fig. 1-3, the detection device for sensing the number and area of pests in a tea garden based on laser in the embodiment mainly comprises: the device comprises a funnel-shaped perforated wind scooper 1, a square plate 2, a connecting plate 3, a connecting arm 4, an organic glass cylindrical channel 5, an equilateral triangle groove body 6, a linear laser 7, a CCD image sensor 8, a pest measuring circuit and a shell 9;
the bottom of the funnel-shaped perforated wind scooper is respectively connected with the organic glass cylindrical channel, the connecting plate and the equilateral triangle groove body;
the connecting plate is arranged between the bottom of the funnel-shaped perforated wind scooper and the bottom of the equilateral triangle groove body, and a screw hole is drilled on the connecting plate and used for connecting and fixing the funnel-shaped perforated wind scooper and the equilateral triangle groove body;
the edge of the square plate is provided with 4 screw holes which are connected with the connecting plate through a connecting arm;
the corner of the connecting arm is provided with a triangular body for fixing the connecting plate, the connecting arm and the top of the funnel-shaped perforated wind scooper are both provided with small holes, and the funnel-shaped perforated wind scooper is fixedly connected with the equilateral triangular groove body in a bolt mode;
the linear laser and the CCD image sensor are arranged in the equilateral triangle groove body, the organic glass cylindrical channel is arranged in the center of the equilateral triangle groove body and is penetrated to the bottom of the equilateral triangle groove body by the funnel-shaped perforated wind scooper;
the inner side of the top of the shell is provided with an inner convex sheet, and the bottom of the shell is provided with an outer concave clip.
As shown in fig. 4, in this embodiment, the funnel-shaped perforated wind scooper is disposed on the circular bracket with the round hole square plate, the top of the funnel-shaped perforated wind scooper is a large round hole with a diameter of 158 mm, the bottom of the funnel-shaped perforated wind scooper is a small round hole with a diameter of 45 mm, and the height of the funnel-shaped perforated wind scooper is 80 mm, the large round hole at the top of the funnel-shaped perforated wind scooper is connected with the small round hole at the bottom of the funnel-shaped perforated wind scooper through a conical surface of the funnel-shaped perforated wind scooper, a certain number of pressure release holes are drilled on the conical surface of the funnel-shaped perforated wind scooper, pests cannot pass through the pressure release.
As shown in fig. 5, in this embodiment, the equilateral triangle groove is located at the lower part of the connecting plate, the outer sides of the three sides of the equilateral triangle groove are provided with screw holes for connecting the connecting plate at the upper part, the groove of the equilateral triangle groove is an equilateral triangle, the mounting groove of the linear laser, the mounting groove of the CCD image sensor and the organic glass cylindrical channel bracket are arranged in the equilateral triangle. The mounting groove of the linear laser is arranged on the corner of the tank body, the mounting groove of the CCD image sensor is arranged on the edge of the tank body, and the bracket of the organic glass cylindrical channel is arranged in the center of the bottom of the tank body. A word line laser installation groove is the cylinder, and the centre of a circle of cylinder is located the reverse extension line of equilateral triangle angular bisector, makes the light source of a word line laser be located foretell reverse extension line, forms the parallel baffle of certain distance in the both sides in light source the place ahead, avoids the laser that the laser instrument launches to shine to two edges that the place angle is adjacent. The mounting groove of the CCD image sensor is a cuboid and is located on the edge corresponding to the corner where the emitter is located, and a limiting mechanism is arranged in the mounting groove of the CCD image sensor and used for fixing the CCD image sensor. Wire-passing holes are formed in the back of the mounting grooves of the linear laser and the CCD image sensor, and wires are led out from small holes in the back of the mounting grooves. The organic glass cylindrical channel bracket is circular, is positioned in the center of the bottom of the equilateral triangle groove body and is used for supporting and fixing the organic glass cylindrical channel.
In this embodiment, the shape of the linear laser is cylindrical, the projection surface is in a linear shape, a 64-degree triangular laser surface is formed between the emission point and the projection surface, the laser wavelength is 650nm, the color is red light, the laser can continuously work for 24 hours, the linear distance capable of irradiating is 5 meters, and the emitted laser cannot penetrate through pest bodies.
In this embodiment, the CCD image sensor is a linear array CCD image sensor, which has high sensitivity and low dark current, the core component is a semiconductor material with high sensitivity, the number of image sensing elements is 7500, laser light can be converted into electric charge, and the electric charge is converted into digital signals by an analog-to-digital converter chip, and the detection frequency is 180 times/minute.
In the embodiment, the organic glass cylindrical channel is made of organic glass, has good transparency, is arranged at the center of the equilateral triangle groove body, enables captured pests to smoothly pass through the equilateral triangle groove body, and keeps the cleanness of the equilateral triangle groove body and the smoothness of a laser light path.
As shown in fig. 6, in this embodiment, the housing is a cuboid, the cross section is a cube, the top surface and the bottom surface are removed, and the inner side of the top of the housing is provided with an inner protrusion and a screw hole for supporting and fixing the square plate with the circular hole.
In the embodiment, the detection system for sensing the quantity and the area of the tea garden pests by laser is based on the detection device for sensing the quantity and the area of the tea garden pests by laser, and the system detects the pests by utilizing the light path emitted by a linear laser and the photosensitive principle of a CCD (charge coupled device) image sensor, so that the aims of low cost and high detection precision are fulfilled; it includes:
a laser counting module: the laser counting device comprises a funnel-shaped perforated wind scooper module, a square plate module, a connecting arm module, an organic glass cylindrical channel module, an equilateral triangle groove body module, a pest measuring circuit and a shell module, wherein all parts of the laser counting module are fixedly connected in a screw and nut mode and are used for counting pests;
in the embodiment, the top of the laser counting module is provided with a funnel-shaped perforated wind scooper module and a square plate module with a round hole, and the bottom of the funnel-shaped perforated wind scooper module is respectively connected with an organic glass cylindrical channel module, a connecting plate module and an equilateral triangle groove body module;
the connecting plate module is arranged between the bottom of the funnel-shaped perforated wind scooper module and the bottom of the equilateral triangle groove body module, and a screw hole is drilled on the connecting plate module and used for connecting and fixing the funnel-shaped perforated wind scooper module and the equilateral triangle groove body module;
the edge of the square plate module is provided with 4 screw holes and is connected with the connecting plate module through the connecting arm module;
the corner of the connecting arm module is provided with a triangular body for fixing the connecting plate module, the tops of the connecting arm module and the funnel-shaped perforated wind scooper module are both provided with small holes, and the funnel-shaped perforated wind scooper module is fixedly connected with the equilateral triangular groove body module in a bolt mode;
the inner side of the top of the shell module is provided with an inner convex sheet for supporting and fixing a square plate of the circular hole; the bottom of the shell module is provided with an outer concave clamp; the inner convex sheet of the outer shell module is embedded into the outer concave clamp at the bottom of the insect suction fan, the inner convex sheet at the top of the insect collecting net module is embedded into the outer concave clamp, all the inner convex sheets and the outer concave clamps are fixed in a buckling mode, the upper layer is the insect suction fan, the middle layer is the laser counting module, and the lower layer is the layout of the insect collecting net module. Utilize the phototaxis of pest, lure the pest to near the lamp body, when the pest got into the active area of trematode fan, the pest was inhaled in the funnel-shaped perforation wind scooper module and is gone into the little round hole in funnel-shaped perforation wind scooper bottom by the big round hole in funnel-shaped perforation wind scooper top and go out, gets into organic glass cylinder passageway module afterwards.
The laser counting module is connected with the trap lamp, the insect sucking fan and the insect collecting net in a buckling mode, so that the practicability is high, the disassembly and the maintenance are convenient, and the time is saved; the laser counting module can be also combined and connected with other modules, such as a pest image acquisition module or an environment acquisition module, so that the laser counting module has strong flexibility, if the laser counting module is modified and upgraded, only the counting module needs to be considered independently, and other modules connected with the laser counting module do not need to be considered, so that the research and development time is saved while the research and development cost is reduced, and the upgrading and upgrading efficiency is improved.
The laser counting module is characterized in that only one plane is used for connecting other part modules with the shell module, rectangular convex blocks and screw holes are arranged on the periphery of the top of the shell module and used for supporting and fixing the top surface of the funnel-shaped perforated wind scooper module, the top surface of the funnel-shaped perforated wind scooper module is used as a reference surface, other parts are connected from top to bottom, other part modules except the funnel-shaped perforated wind scooper module are not connected with the shell module, part installation deviation caused by machining errors is reduced, reliability and accuracy are improved, and meanwhile, the installation and the disassembly of the part modules and the shell module are facilitated.
A word laser power control module: the laser is used for emitting the linear laser to irradiate the CCD image sensor control module to form a triangular laser surface.
As shown in fig. 7, in this embodiment, the power driver of the power control module circuit of the word laser adopts an LM321 chip, the laser diode adopts a QL63D4S-C, the power regulation of the laser diode adopts a CAT5171TBI-50GT3 chip, the surge protection adopts an SRV05-4 chip, the three-terminal regulator capable of adjusting the voltage value adopts a TL432 chip, the word laser is controlled by a 4P pin, the pin 1 corresponds to VCC, the pin 2 is grounded, the pin 3 corresponds to SCL, and the pin 4 corresponds to SDA.
CCD image sensor control module: the pest number is used for detecting the laser signal.
As shown in fig. 8, in this embodiment, the CCD image sensor has 20 pins, the control module is connected to the CCD image sensor through two 10P pins, pin 1 of pin 8 is connected to the 12V power supply, pin 3 is grounded, and pins 4 to 10 correspond to CCD _ a _ CP ', CCD _ a _ RS ', CCD _ a _2B ', CCD _ a _ EN ', CCD _ a _ SH ', CCD _ a _ O0', and CCD _ a _ O1', respectively, where pins 4 to 10 are connected to the transient voltage suppressor SP0504BAHT, the DC-DC converter SB6286 is used for DC-to-DC conversion, and the low-energy power distribution SY6280AAC chip is used for ac power supply.
In the embodiment, laser emitted by the linear laser power control module forms a triangular laser surface, completely covers the cross section of the organic glass cylindrical channel module, and finally irradiates the detection surface of the linear array CCD image sensor control module to form a linear light spot; the pests block the emission of partial light path when passing through the laser surface, make laser shine the facula vacancy on CCD image sensor control module a section, and the light signal value that CCD image sensor control module detected diminishes in the twinkling of an eye, makes its signal of telecommunication produce the change, if the change value reaches the threshold value of settlement, judges to catch a pest, produces the count.
Specifically, as shown in fig. 9, the program starts, STM32 and ADC are initialized, and the initial value of the number of image sensing units (AD _ Count) with the AD value greater than 190 is 0; i is the ith image sensing unit of the linear array CCD image sensor, the initial Value is 0, AD sampling is carried out every 20 CCD image sensing units at intervals from the 64 th image sensing unit to the 3813 th image sensing unit, an AD Value (AD _ Value) is obtained, if the AD Value is greater than 190, AD _ Count +1 is carried out until the 187 CCD image sensing units needing sampling are traversed, and the current sampling point AD _ Count is obtained; if the AD _ Count is larger than 5, judging that 1 pest is captured, obtaining the length a and the width b of the pest by using an area algorithm, and turning the page turning sheet by 180 degrees by using a worm and gear speed reducing motor after the pest is captured, so that the pest is transferred.
In this embodiment, the detection method for sensing the number and area of the tea garden pests by laser is based on the detection device and system for sensing the number and area of the tea garden pests by laser, and mainly includes the following steps:
s1, the module is powered on, 12V voltage is supplied to the laser counting module by a power supply, the trap lamp is turned on, the insect suction fan starts to run, the linear laser emits linear laser with the wavelength of 650nm, the angle of the linear laser is 60 degrees, the linear laser irradiates on a high-sensitivity semiconductor material of the CCD image sensor, the laser is converted into electric charge and is converted into a digital signal by an analog-to-digital converter chip, the CCD image sensor starts to detect the laser signal, and the counter returns to zero;
s2, the pest is led to the vicinity of the lamp body by the trap lamp, the pest is sucked into the funnel-shaped perforated wind guide cover by the pest sucking fan positioned below the lamp body, and the pest is converged to the small round hole at the bottom of the funnel-shaped perforated wind guide cover from the large round hole at the top of the funnel-shaped perforated wind guide cover and then enters the organic glass cylindrical channel;
s3, under the wind pressure of the insect suction fan, pests pass through the triangular laser surface through the organic glass cylindrical channel, the pests block part of the laser light path due to self pests, so that laser signals are changed, the number output by the CCD image sensor is changed, and if the AD value of the image sensing unit is greater than 190 and the number of the image sensing unit is greater than 5, the counter is increased by 1, so that the number information of the pests is obtained;
and S4, acquiring the area size information of the pests.
As shown in fig. 10, two hexagons are a schematic structural diagram of an equilateral triangle groove, a first line laser emitter a corresponds to a CCD image sensor M, a second line laser emitter B corresponds to a CCD image sensor N, the length and width of the area of the pest are set as a and B, respectively, and the vacant sections of the CCD image sensor M, N are set as M and N, respectively, when the pest passes through the detection surface;
taking an end point O of the CCD image sensor close to one end of the first word line laser emitter A as an origin, constructing a rectangular coordinate system with the unit of millimeter, wherein the coordinates of the first word line laser emitter A are (-8, -13.4), and the coordinates of the first word line laser emitter B are (92.4, -13.4);
the linear relation of the CCD image sensor M is-2 x +168, and the linear relation of the CCD image sensor N is 2 x;
the corresponding midpoints of the vacant sections M and N are respectively C, D, the abscissa of the point C is equal to the product of the occupation ratio of the distance CF from the central point to the end point F in the CCD image sensor M and 34.5 plus 49.5, and the abscissa of the point D is equal to the product of the occupation ratio of the OD in the CCD image sensor N and 34.5;
C. the ordinate of D is obtained from the relationship y-2 x +168, y-2 x of the straight line where the CCD image sensor is located, the intersection of the line segment AC and the BD is the location point E of the pest, and the length and width a ═ BE/BD ═ n, b ═ AE/AC ═ m of the pest according to the principle of similar triangles.
In this embodiment, the specific steps of acquiring the area size information of the pest in step S4 are as follows:
s41, acquiring a rectangular coordinate system, the lengths of the vacant sections m and n, the coordinate information of the laser emitter light source A, B of the first word line and the linear relation in the coordinate system of the CCD image sensor;
s42, obtaining the occupation ratio of the vacancy section m and the vacancy section n in the CCD image sensor according to the distance between the midpoint of the vacancy section m and the sensor end point, and then obtaining the abscissa of the point C, D;
s43, obtaining the longitudinal coordinate of the C, D point according to the linear relation in the coordinate system where the CCD image sensor is located, solving the linear relation between the AC and the BD, and obtaining the coordinate information of the intersection point E through the linear relation;
s44, acquiring the lengths of BE, BD, AE and AC, and according to the similar triangle principle, calculating the length a and the width b of pests according to the following formulas:
a＝(BE/BD)*n，
b＝(AE/AC)*m，
the length a and the width b of the pests are obtained, and the area size information of the pests is obtained.
In the embodiment, a linear laser emits laser at a certain angle to irradiate a CCD image sensor, when captured pests pass through a fully-covered triangular laser surface formed between a laser emitter and the CCD image sensor, a vacant section is formed because the volume of the pests per se blocks part of the laser from emitting to the CCD image sensor, laser signals detected by the CCD image sensor change, and electric signals of a detection circuit change, so that counting is realized;
the configuration of the double laser and the double CCD image sensor is realized through an equilateral triangle groove body, two-dimensional information of pests can be obtained in a working state, a two-dimensional rectangular pest coordinate system is constructed on the basis, and the area size detection of the pests is realized according to the length of the vacancy section, the midpoint of the vacancy section and the occupation ratio thereof, the linear relation of the plane where the sensor is located, the coordinate information of the light source, the intersection point coordinate of the two light paths and the similar triangle principle.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides a detection apparatus based on laser perception tea garden pest quantity and area which characterized in that mainly includes: the device comprises a funnel-shaped perforated wind scooper, a square plate, a connecting arm, an organic glass cylindrical channel, an equilateral triangle groove body, a linear laser, a CCD image sensor, a pest measuring circuit and a shell;
the bottom of the funnel-shaped perforated wind scooper is respectively connected with the organic glass cylindrical channel, the connecting plate and the equilateral triangle groove body;
the connecting plate is arranged between the bottom of the funnel-shaped perforated wind scooper and the bottom of the equilateral triangle groove body, and a screw hole is drilled on the connecting plate and used for connecting and fixing the funnel-shaped perforated wind scooper and the equilateral triangle groove body;
the edge of the square plate is provided with a plurality of screw holes which are connected with the connecting plate through connecting arms;
the linear laser and the CCD image sensor are arranged in the equilateral triangle groove body, the organic glass cylindrical channel is arranged in the center of the equilateral triangle groove body and is penetrated to the bottom of the equilateral triangle groove body by the funnel-shaped perforated wind scooper;
the inner side of the top of the shell is provided with an inner convex sheet, and the bottom of the shell is provided with an outer concave clip.
2. The detection device for sensing the quantity and area of pests in the tea garden based on the laser as claimed in claim 1, wherein a triangular body is arranged at a corner of the connecting arm and used for fixing the connecting plate, small holes are formed in the connecting arm and the top of the funnel-shaped perforated wind scooper, and the funnel-shaped perforated wind scooper is fixedly connected with the equilateral triangular groove body in a bolt mode.
3. The device for detecting the quantity and area of pests in the tea garden based on laser sensing as claimed in claim 2, wherein the funnel-shaped perforated wind scooper is placed on a circular bracket with a round square plate, the top of the funnel-shaped perforated wind scooper is a large round hole, the bottom of the funnel-shaped perforated wind scooper is a small round hole, the large round hole at the top of the funnel-shaped perforated wind scooper is connected with the small round hole at the bottom of the funnel-shaped perforated wind scooper through a conical surface of the funnel-shaped perforated wind scooper, and a pressure release hole is drilled in the conical surface.
4. The device for detecting the quantity and area of pests in a tea garden based on laser sensing as claimed in claim 3, wherein the equilateral triangle groove body is located at the lower portion of the connecting plate, and screw holes are formed in the outer sides of three sides of the equilateral triangle groove body and used for being connected with the connecting plate at the upper portion.
5. The detection device for sensing the quantity and the area of the pests in the tea garden based on the laser as claimed in claim 4, wherein the groove body of the equilateral triangle groove body is an equilateral triangle body, and a mounting groove of the in-line laser, a mounting groove of the CCD image sensor and an organic glass cylindrical channel bracket are arranged in the equilateral triangle body;
the mounting groove of the linear laser is arranged on the corner of the tank body, the mounting groove of the CCD image sensor is arranged on the edge of the tank body, and the bracket of the organic glass cylindrical channel is arranged in the center of the bottom of the tank body;
the mounting groove of the linear laser is a cylinder, and the center of the cylinder is positioned on the reverse extension line of the equilateral triangle angular bisector; the mounting groove of the CCD image sensor is a cuboid and is positioned on the edge corresponding to the corner where the emitter is positioned, a limiting mechanism is arranged in the mounting groove of the CCD image sensor and is used for fixing the CCD image sensor, wiring holes are formed in the mounting groove of the linear laser and the mounting groove of the CCD image sensor, and wires are led out from small holes in the back of the mounting groove; the organic glass cylindrical channel bracket is circular, is positioned in the center of the bottom of the equilateral triangle groove body and is used for supporting and fixing the organic glass cylindrical channel.
6. The laser-based detection device for sensing the number and area of pests in the tea garden according to claim 5, wherein the CCD image sensor is a linear array CCD image sensor.
7. The device for detecting the quantity and area of pests in a tea garden based on laser sensing as claimed in claim 6, wherein the housing is a cuboid with a square cross section, the top surface and the bottom surface are removed, and the inner side of the top of the housing is provided with an inner bump and a screw hole for supporting and fixing a square plate with a round hole.
8. A detecting system based on laser perception tea garden pest quantity and area is characterized by mainly comprising:
a laser counting module: the laser counting device comprises a funnel-shaped perforated wind scooper module, a square plate module, a connecting arm module, an organic glass cylindrical channel module, an equilateral triangle groove body module, a pest measuring circuit and a shell module, wherein all parts of the laser counting module are fixedly connected in a screw and nut mode and are used for counting pests;
a word laser power control module: the laser device is used for emitting the linear laser to irradiate the CCD image sensor control module to form a triangular laser surface;
CCD image sensor control module: the pest number is used for detecting the laser signal.
9. A detection method for sensing the quantity and area of pests in a tea garden based on laser is characterized by comprising the following steps:
s1, powering on the module, supplying voltage to the laser counting module by using a power supply, lighting the trap lamp, starting the operation of the insect suction fan, emitting a linear laser by the linear laser, irradiating the linear laser on a high-sensitivity semiconductor material of the CCD image sensor, converting the laser into charges, converting the charges into digital signals by the analog-to-digital converter chip, starting the detection of the laser signals by the CCD image sensor, and returning the counter to zero;
s2, the pest is led to the vicinity of the lamp body by the trap lamp, the pest is sucked into the funnel-shaped perforated wind guide cover by the pest sucking fan positioned below the lamp body, and the pest is converged to the small round hole at the bottom of the funnel-shaped perforated wind guide cover from the large round hole at the top of the funnel-shaped perforated wind guide cover and then enters the organic glass cylindrical channel;
s3, under the wind pressure of the insect suction fan, pests pass through the triangular laser surface through the organic glass cylindrical channel, the pests block part of the laser light path due to self pests, so that laser signals are changed, the number output by the CCD image sensor is changed, and if the AD value of the image sensing unit is greater than 190 and the number of the image sensing unit is greater than 5, the counter is increased by 1, so that the number information of the pests is obtained;
and S4, acquiring the area size information of the pests.
10. The method for detecting the quantity and area of pests based on laser sensing in the tea garden as claimed in claim 9, wherein the step of obtaining the information of the size of the area of the pests in step S4 comprises the following steps:
s41, acquiring a rectangular coordinate system, the lengths of the vacant sections m and n, the coordinate information of the laser emitter light source A, B of the first word line and the linear relation in the coordinate system of the CCD image sensor;
s42, obtaining the occupation ratio of the vacancy section m and the vacancy section n in the CCD image sensor according to the distance between the midpoint of the vacancy section m and the sensor end point, and obtaining the abscissa of the midpoint C of the vacancy section m and the midpoint D of the vacancy section n;
s43, obtaining the vertical coordinates of the points C and D in the vacant section m and the vacant section n according to the linear relation in the coordinate system where the CCD image sensor is located, solving the linear relation between the AC and the BD, and obtaining the coordinate information of the intersection point E through the linear relation;
s44, acquiring the lengths of BE, BD, AE and AC, and according to the similar triangle principle, calculating the length a and the width b of pests according to the following formulas:
a＝(BE/BD)*n，
b＝(AE/AC)*m，
and (5) finding the length a and the width b of the pests to obtain the area size information of the pests.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203324781U (en) * | 2013-06-09 | 2013-12-04 | 浙江大学 | Pest trapping apparatus and pest remote identifying and monitoring system |
| CN209859186U (en) * | 2019-06-28 | 2019-12-27 | 江西农家宝网络科技股份有限公司 | Intelligent counting and transmitting device for trapping pests |
| CN112232474A (en) * | 2020-09-14 | 2021-01-15 | 华南农业大学 | Capacitance counting module for insect pest detection, insect pest detection device and method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203324781U (en) * | 2013-06-09 | 2013-12-04 | 浙江大学 | Pest trapping apparatus and pest remote identifying and monitoring system |
| CN209859186U (en) * | 2019-06-28 | 2019-12-27 | 江西农家宝网络科技股份有限公司 | Intelligent counting and transmitting device for trapping pests |
| CN112232474A (en) * | 2020-09-14 | 2021-01-15 | 华南农业大学 | Capacitance counting module for insect pest detection, insect pest detection device and method |
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