An intelligent sensor for detecting crop growth information

Abstract

The utility model relates to crop detection technical field especially, it is an intelligent sensor for detecting crop growth information, include: upper casing, upper casing bottom end detachable fixed installation has lower casing, the circuit board top end has two photosensitive elements one, the circuit board bottom end has two photosensitive elements two, the upper casing and lower casing middle part left and right sides are equipped with two detection holes one and two detection holes two respectively, upper slide cover and lower slide cover are detachable respectively and are connected in the top middle part of upper casing and the bottom middle part of lower casing, upper slide cover top end left and right sides are equipped with two through -holes one respectively, lower slide cover bottom end left and right sides are equipped with two through -holes two respectively, the optical lens assembly one that can eliminate the influence of solar intensity and incident angle is arranged in through -hole one, the optical lens assembly two that can eliminate the influence of solar intensity is arranged in through -hole two, the utility model provides an intelligent sensor that high accuracy and convenient to carry use.

Description

Technical Field

[0001] This utility model relates to the field of crop detection technology, and in particular to an intelligent sensor for detecting crop growth information. Background Technology

[0002] Accurate acquisition of crop growth information plays a crucial role in smart agriculture, providing real-time and precise monitoring data for the crop growth process, which can effectively improve crop yield, quality, and planting efficiency.

[0003] Traditional sensors struggle to switch seamlessly between different crops when monitoring their growth information, necessitating the use of separate equipment for each crop type, increasing cost and operational complexity. Furthermore, most sensors are affected by sunlight intensity and incident angle, impacting measurement accuracy. In addition, many existing sensor devices are bulky, expensive, and lack ease of use, hindering their widespread adoption in agricultural production. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent sensor for detecting crop growth information, so as to solve the technical problems existing in the background art.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A smart sensor for detecting crop growth information includes: an upper housing, a lower housing, an upper sliding cover, and a lower sliding cover. The lower housing is detachably fixed to the bottom of the upper housing. A circuit board is fixedly installed inside the cavity between the upper and lower housings. Two photosensitive elements are integrated on the left and right sides of the top center of the circuit board, and two photosensitive elements are integrated on the left and right sides of the bottom center of the circuit board. Two detection holes and two detection holes are respectively opened on the left and right sides of the middle of the upper and lower housings. The upper sliding cover and the lower sliding cover are detachably snapped onto the top center of the upper housing and the bottom center of the lower housing, respectively. Two through holes are formed on the top left and right sides respectively, and two through holes are formed on the bottom left and right sides respectively. Two photosensitive elements, two detection holes, and two through holes are respectively arranged accordingly. Two photosensitive elements, two detection holes, and two through holes are respectively arranged accordingly. An optical lens assembly 1 capable of eliminating the influence of sunlight intensity and incident angle is set in the through hole 1. An optical lens assembly 2 capable of eliminating the influence of sunlight intensity is set in the through hole 2. A Type-C interface is also integrated on the circuit board. The sunlight information detected by photosensitive elements 1 and 2 is output through the Type-C interface.

[0007] Furthermore, it also includes: stepped fixing blocks, the orthographic projection of the upper shell, lower shell and circuit board are all rectangular, four stepped fixing blocks are provided, the four stepped fixing blocks are symmetrically fixedly connected to the four corners of the lower cavity of the upper shell, the four rectangular corners of the circuit board are respectively fixedly installed on the lower part of the steps of the four stepped fixing blocks; the lower shell is detachably fixedly installed on the upper part of the steps of the four stepped fixing blocks.

[0008] Furthermore, a transverse through-slot is formed at the center of the top of the upper housing. Two parallel locking blocks (block 1) are symmetrically fixedly connected to the right side of the bottom of the slot, and a locking block (block 2) is fixedly connected to the center of the left side of the bottom of the slot. Both locking blocks (block 1 and block 2) have right-angled trapezoidal cross-sections with their top and bottom surfaces parallel. The long side of locking block 1 is transverse and parallel to the transverse long side of the slot. The long side of locking block 2 is longitudinal and perpendicular to the transverse long side of the slot. The inclined surfaces of both locking blocks (block 1 and block 2) face outwards from the upper housing. The first locking block does not contact the side wall of the strip groove; the upper sliding cover is rectangular and matches the strip groove, and the bottom end of the upper sliding cover is pulled out to form a concave cavity 1. Two locking blocks 5 are symmetrically fixedly connected to the front and rear inner walls of the right side of the concave cavity 1, and a locking block 6 is fixedly connected to the middle of the left inner wall of the concave cavity 1. The cross-section of the locking block 6 and the two locking blocks 5 are all right-angled triangles. The inclined surfaces of the locking blocks 6 and 5 are both set towards the inside of the concave cavity 1. When the upper sliding cover is fully engaged with the strip groove, the inclined surfaces of the two locking blocks 5 respectively contact and engage with the inclined surfaces of the two locking blocks 1, and the inclined surface of the locking block 6 contacts and engages with the inclined surface of the locking block 2.

[0009] Furthermore, the optical lens assembly includes: a black foam cotton, a filter, an neutral density filter, and a cosine corrector. A circular groove is formed at the bottom of the detection hole. Two black foam cotton units are hollow, stepped shafts, and are respectively inserted into the two circular grooves and the two detection holes. The bottom of the black foam cotton is pressed against the top of the circuit board. The black foam cotton is fitted onto the outside of the photosensitive element. A circular slot is formed on the lower inner wall of the through hole. A filter, a neutral density filter, and a cosine corrector are stacked sequentially from the inside out within the circular slot. The top edge of the cosine corrector is pressed against the top surface of the circular slot, and the bottom of the filter is pressed against the top of the black foam cotton.

[0010] Furthermore, the lower housing has a Z-shaped cross-section, and the upper housing has two symmetrical recesses on the left and right sides of its bottom end. The width and depth of the recesses are the same as the width and depth of the recesses in the lower housing, respectively. When the lower housing is installed at the bottom of the upper housing, the recesses are aligned with the recesses in the lower housing. Two locking blocks (3) are symmetrically fixed to the left side of the bottom end of the recessed portion of the lower housing, and the two locking blocks (3) are parallel to each other. A locking block (4) is fixedly connected to the middle of the right side of the bottom end of the recessed portion of the lower housing. The cross-sections of locking blocks (3) and (4) are both right-angled trapezoids, with their top and bottom surfaces parallel. The long side of locking block (3) is horizontally oriented, and its horizontal long side is parallel to the horizontal long side of the recessed portion of the lower housing. The long side of locking block (4) is vertically oriented, and its vertical long side is parallel to the horizontal long side of the recessed portion of the lower housing. The horizontal long side is set vertically; the inclined surfaces of the three and four locking blocks are both set towards the outside of the lower housing, and the three locking blocks do not contact the side wall of the inner concave part of the lower housing; the sliding cover is rectangular and matches the inner concave part and two inner openings of the lower housing respectively. The top of the sliding cover is pulled out to form an inner concave cavity two. Two locking blocks seven are symmetrically fixedly connected to the left front and rear inner walls of the inner concave cavity two. A locking block eight is fixedly connected to the middle of the right inner wall of the inner concave cavity two. The cross-section of the eight locking blocks and the two seven locking blocks is a right triangle. The inclined surfaces of the eight locking blocks and the seven locking blocks are both set towards the inside of the inner concave cavity two. When the sliding cover is fully matched with the inner concave part and the two inner openings of the lower housing, the inclined surfaces of the two seven locking blocks respectively contact and match the inclined surfaces of the two three locking blocks, and the inclined surface of the eight locking blocks contacts and matches the inclined surface of the four locking blocks.

[0011] Furthermore, the optical lens assembly two includes: a black foam cotton 2, a neutral density filter 2, and a light filter 2. Two cylinders are fixedly connected to the top of the lower housing. The two cylinders are coaxially arranged with the two detection holes 2 respectively. The inner diameter of the cylinder is larger than the diameter of the detection hole 2. The black foam cotton 2 is hollow and stepped, and there are two of them. The two black foam cotton 2 are respectively inserted into the two cylinders and the two detection holes 2. The top of the black foam cotton 2 is pressed against the bottom of the circuit board. The black foam cotton 2 is sleeved on the outside of the photosensitive element 2. A circular groove 2 is opened on the upper inner wall of the through hole 2. The neutral density filter 2 and the light filter 2 are stacked sequentially from the inside to the outside in the circular groove 2. The bottom edge of the light filter 2 is pressed against the bottom surface of the circular groove 2. The top of the neutral density filter 2 is pressed against the bottom of the black foam cotton 2.

[0012] Furthermore, an interface opening is provided on the front end face of the upper housing, and the Type-C interface is disposed in the interface opening and cooperates with the interface opening.

[0013] Furthermore, it also includes: an LED light, a sunlight blocking mechanism, and a photoresistor. The circuit board also integrates a lithium battery. An embedded hole is provided on the rear end face of the upper housing, and the LED light is installed in the embedded hole. A sunlight blocking mechanism is fixedly installed on the rear top side of the upper housing. A photoresistor is provided inside the sunlight blocking mechanism. The LED light, the photoresistor, and the lithium battery are connected in series. When the photoresistor is completely blocked by the sunlight blocking mechanism, the resistance of the photoresistor is at its maximum, and the LED light is turned off.

[0014] Furthermore, the sunlight blocking mechanism includes: a circular base, columns, and a circular baffle. Several columns are provided, and the circular baffle is fixedly connected to the top of the circular base through several columns. The photoresistor is conical, and the diameter of the bottom circle of the photoresistor is smaller than the diameter of the circular baffle. The bottom end of the photoresistor is fixedly installed at the top of the circular base and located directly below the circular baffle.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention features a detachable upper and lower sliding cover. The upper sliding cover houses a first filter, a first neutral density filter, and a cosine corrector, which reduces the impact of sunlight intensity and incident angle on the sensor to some extent. The lower sliding cover houses a second neutral density filter and a second filter, further reducing the impact of sunlight intensity on the sensor, thus ensuring the overall measurement accuracy. When detecting growth information for different crops, only the filter compatible with the sensitive spectral band of the crop needs to be replaced, eliminating the need for a complete sensor replacement and reducing costs. The entire sensor is compact, making it easy to carry and use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a rear bottom view of the present invention;

[0019] Figure 3 This is a transverse longitudinal sectional view of the present invention;

[0020] Figure 4 This is a structural view of the upper shell in this utility model;

[0021] Figure 5 This is a bottom view of the upper shell in this utility model;

[0022] Figure 6 This is a structural view of the lower shell of this utility model;

[0023] Figure 7This is a top view of the lower housing in this utility model;

[0024] Figure 8 This is a structural view of the circuit board in this utility model;

[0025] Figure 9 This is a bottom view of the circuit board in this utility model;

[0026] Figure 10 This is a bottom view of the present invention after the lower shell has been removed;

[0027] Figure 11 This is a bottom view of the upper sliding cover in this utility model;

[0028] Figure 12 This is a top view of the sliding cover in this utility model.

[0029] The labels in the attached diagram are as follows: 1-Upper shell, 101-Strip groove, 102-Detection hole one, 103-Circular groove, 104-Interface opening, 105-Embedded hole, 2-Lower shell, 201-Detection hole two, 3-Upper sliding cover, 301-Through hole one, 302-Inner cavity one, 4-Lower sliding cover, 401-Through hole two, 402-Inner cavity two, 5-Clamping block one, 6-Clamping block two, 7-Stepped fixing block, 8-Clamping block three, 9-Clamping block four, 10-Circular groove 11-Circuit board, 12-Photosensitive element one, 13-Photosensitive element two, 14-Type-C interface, 15-Card block five, 16-Card block six, 17-Card block seven, 18-Card block eight, 19-Black foam cotton one, 20-Filter one, 21-Neutral neutral density filter one, 22-Cosine correction filter, 23-Black foam cotton two, 24-Neutral neutral density filter two, 25-Filter two, 26-LED light, 27-Sunlight blocking mechanism, 28-Photoresistor. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] See Figures 1-12As shown, an intelligent sensor for detecting crop growth information includes: an upper housing 1, a lower housing 2, an upper sliding cover 3, and a lower sliding cover 4. The lower housing 2 is detachably fixed to the bottom of the upper housing 1. A circuit board 11 is fixedly installed inside the cavity between the upper housing 1 and the lower housing 2. Two photosensitive elements 12 are integrated on the left and right sides of the top center of the circuit board 11, and two photosensitive elements 13 are integrated on the left and right sides of the bottom center of the circuit board 11. Two detection holes 102 and two detection holes 201 are respectively opened on the left and right sides of the middle of the upper housing 1 and the lower housing 2. The upper sliding cover 3 and the lower sliding cover 4 are detachably snapped onto the top center of the upper housing 1 and the bottom center of the lower housing 2, respectively. Two through holes 301 are respectively opened on the left and right sides of the top of the upper sliding cover 3. Two through holes 401 are respectively opened on the left and right sides of the bottom of the sliding cover 4. Two photosensitive elements 12, two detection holes 102 and two through holes 301 are respectively set. Two photosensitive elements 13, two detection holes 201 and two through holes 401 are respectively set. An optical lens assembly 1 capable of eliminating the influence of sunlight intensity and incident angle is set in the through hole 301. An optical lens assembly 2 capable of eliminating the influence of sunlight intensity is set in the through hole 401. A Type-C interface 14 is also integrated on the circuit board 11. The sunlight information detected by photosensitive elements 12 and 13 is output through the Type-C interface 14. The model of photosensitive elements 12 and 13 is TSL2561T.

[0032] In this embodiment, the smart sensor further includes: stepped fixing blocks 7. The orthographic projections of the upper housing 1, the lower housing 2, and the circuit board 11 are all rectangular. Four stepped fixing blocks 7 are provided, and the four stepped fixing blocks 7 are symmetrically fixedly connected to the four corners of the lower cavity of the upper housing 1. The four rectangular corners of the circuit board 11 are respectively fixedly installed on the lower part of the steps of the four stepped fixing blocks 7. The lower housing 2 is detachably fixedly installed on the upper part of the steps of the four stepped fixing blocks 7. The lower housing 2 and the circuit board 11 are both fixed to the stepped fixing blocks 7 by screws.

[0033] In this embodiment, a transverse through-slot 101 is provided at the center of the top of the upper shell 1. Two parallel locking blocks 5 are symmetrically fixedly connected to the right side of the bottom of the slot 101. A locking block 6 is fixedly connected to the center of the left side of the bottom of the slot 101. The cross-sections of the locking blocks 5 and 6 are both right-angled trapezoids with their top and bottom surfaces parallel. The long side of the locking block 5 is transverse and parallel to the transverse long side of the slot 101. The long side of the locking block 6 is longitudinal and perpendicular to the transverse long side of the slot 101. The inclined surfaces of the locking blocks 5 and 6 face outwards from the upper shell 1. The locking block 5 does not contact the side wall of the slot 101. The upper sliding cover 3 is rectangular and fits into the slot 101. The bottom of the upper sliding cover 3 is pulled out to form a concave cavity 302. Symmetrically fixed to the right side of the concave cavity 302 are... There are two locking blocks 15. A locking block 16 is fixedly connected to the middle of the left inner wall of the concave cavity 302. The cross-section of the locking block 16 and the two locking blocks 15 are both right-angled triangles. The inclined surfaces of the locking blocks 16 and 15 are both set towards the inside of the concave cavity 302. When the upper sliding cover 3 is fully engaged with the strip groove 101, the inclined surfaces of the two locking blocks 15 are in contact with the inclined surfaces of the two locking blocks 15 respectively, and the inclined surface of the locking block 16 is in contact with the inclined surface of the locking block 26. During installation, simply align the upper sliding cover 3 with the strip groove 101 and offset it laterally by a certain distance. Then, press the upper sliding cover 3 into the strip groove 101. Next, slide it laterally to the right until the inclined surface of the locking block 16 abuts against the inclined surface of the locking block 26. At this time, the inclined surfaces of the two locking blocks 15 are in contact with the inclined surfaces of the two locking blocks 15 respectively, and the left and right ends of the upper sliding cover 3 are flush with the left and right ends of the upper shell 1.

[0034] In this embodiment, the optical lens assembly includes: black foam cotton 19, a filter 20, a neutral density filter 21, and a cosine corrector 22. A circular groove 103 is provided at the bottom of the detection hole 102. The black foam cotton 19 is hollow and stepped, and two are provided. The black foam cotton 19 is opaque. The two black foam cotton 19s are respectively inserted into the two circular grooves 103 and the two detection holes 102. The bottom end of the black foam cotton 19 is pressed against the top end of the circuit board 11. The black foam cotton 19 is sleeved on the outside of the photosensitive element 12. The lower inner wall of the through hole 301 is provided with... There is a circular slot 1, and inside the circular slot 1, a filter 20, a neutral density filter 21, and a cosine corrector 22 are stacked sequentially from the inside out. The top edge of the cosine corrector 22 is pressed into contact with the top surface of the circular slot 1, and the bottom end of the filter 20 is pressed into contact with the top of the black foam cotton 19. The light intensity attenuation rate of the neutral density filter 21 is 20%, thereby reducing the intensity of sunlight to a certain extent. The cosine corrector 22 is a polytetrafluoroethylene reflective sheet, which can eliminate the influence of sunlight entering the sensor at different angles to a certain extent. The light passing through the two filters 20 is in different wavelengths.

[0035] In this embodiment, the lower housing 2 has a Z-shaped cross-section. Two recessed openings are symmetrically formed on the left and right sides of the bottom end of the upper housing 1. The width and depth of the recessed openings are the same as the width and depth of the recessed portion of the lower housing 2, respectively. When the lower housing 2 is installed at the bottom end of the upper housing 1, the recessed openings are aligned with the recessed portion of the lower housing 2. Two locking blocks 3 8 are symmetrically fixedly connected to the left side of the bottom end of the recessed portion of the lower housing 2, and the two locking blocks 3 8 are parallel to each other. A locking block 4 9 is fixedly connected to the middle of the right side of the bottom end of the recessed portion of the lower housing 2. Locking blocks 3 8 and 4 9... All the cross-sections are right-angled trapezoids with their top and bottom surfaces parallel. The long side of the locking block 3 8 is horizontally positioned, parallel to the horizontal long side of the recessed portion of the lower housing 2. The long side of the locking block 4 9 is vertically positioned, perpendicular to the horizontal long side of the recessed portion of the lower housing 2. The inclined surfaces of both locking blocks 3 8 and 4 9 face outwards from the lower housing 2, and locking block 3 8 does not contact the sidewall of the recessed portion of the lower housing 2. The sliding cover 4 is rectangular and mates with the recessed portion and two recessed openings of the lower housing 2 respectively. The top of the sliding cover 4 is pulled out to form a concave cavity 402. Two locking blocks 7 17 are symmetrically fixedly connected to the left front and rear inner walls of the concave cavity 402. A locking block 8 18 is fixedly connected to the middle of the right inner wall of the concave cavity 402. The cross-section of the locking block 8 18 and the two locking blocks 7 17 are all right-angled triangles. The inclined surfaces of the locking blocks 8 18 and 7 17 are both set towards the inside of the concave cavity 402. When the sliding cover 4 is fully engaged with the concave part and the two concave openings of the lower shell 2, the inclined surfaces of the two locking blocks 7 17 respectively engage with the two locking blocks 3 The inclined surfaces of the 8th and 18th blocks are in contact with each other, and the inclined surfaces of the 8th and 9th blocks are in contact with each other. During installation, simply align the sliding cover 4 with the concave part of the lower housing 2 and offset it laterally by a certain distance from the concave opening on the right side. Then press the sliding cover 4 into the concave part of the lower housing 2. Next, slide the sliding cover 4 laterally until the inclined surfaces of the 8th and 18th blocks abut against the inclined surfaces of the 9th blocks. At this time, the inclined surfaces of the two 7th blocks 17 are in contact with the inclined surfaces of the two 3rd blocks 8 respectively. The left and right ends of the sliding cover 4 are flush with the left and right ends of the upper housing 1.

[0036] In this embodiment, the optical lens assembly 2 includes: black foam cotton 23, neutral density filter 24, and filter 25. Two cylinders 10 are fixedly connected to the top of the lower housing 2. The two cylinders 10 are coaxially arranged with two detection holes 201, respectively. The inner diameter of the cylinder 10 is larger than the diameter of the detection hole 201. The black foam cotton 23 is hollow and stepped, and there are two of them. The black foam cotton 23 is opaque. The two black foam cotton 23s are respectively inserted into the two cylinders 10 and the two detection holes 201. The top of the black foam cotton 23 is pressed against the bottom of the circuit board 11. The black foam cotton 23 is sleeved on the outside of the photosensitive element 13. Through hole 401... The upper inner wall is provided with a circular slot 2. Inside the circular slot 2, a light-reducing filter 24 and a light filter 25 are stacked sequentially from the inside to the outside. The bottom edge of the light filter 25 is pressed against the bottom surface of the circular slot 2, and the top of the light-reducing filter 24 is pressed against the bottom of the black foam cotton 23. The light intensity attenuation rate of the light-reducing filter 24 is 20%, thereby reducing the intensity of reflected sunlight to a certain extent. The light passing bands of the two filters 25 are different, and the light passing band of one filter 25 is the same as that of one filter 20, and the light passing band of the other filter 25 is the same as that of the other filter 20.

[0037] In this embodiment, an interface opening 104 is provided on the front end face of the upper housing 1. A Type-C interface 14 is disposed in the interface opening 104 and cooperates with the interface opening 104. The Type-C interface 14 communicates with a mobile phone or computer through a Type-C data cable. At the same time, the Type-C interface 14 can also charge the lithium battery on the circuit board 11.

[0038] In this embodiment, the intelligent sensor also includes: an LED light 26, a sunlight blocking mechanism 27, and a photoresistor 28. The circuit board 11 also integrates a lithium battery. An embedded hole 105 is provided on the rear end face of the upper housing 1, and the LED light 26 is installed in the embedded hole 105. A sunlight blocking mechanism 27 is fixedly installed on the rear top side of the upper housing 1. A photoresistor 28 is disposed within the sunlight blocking mechanism 27. The LED light 26, the photoresistor 28, and the lithium battery are connected in series. When the photoresistor 28 is completely blocked by the sunlight blocking mechanism 27, the resistance of the photoresistor 28 is at its maximum, and the LED light 26 is turned off. 27 includes: a circular base, columns, and a circular baffle. Several columns are provided, and the circular baffle is fixedly connected to the top of the circular base through several columns. The photoresistor 28 is conical, and the diameter of the bottom circle of the photoresistor 28 is smaller than the diameter of the circular baffle. The bottom end of the photoresistor 28 is fixedly installed on the top of the circular base and located directly below the circular baffle. When the entire sensor is working normally, the LED light 26 is in a constantly lit state, and the LED light 26 can be used to determine whether the lithium battery is powered. When the photoresistor 28 is completely blocked from sunlight by the circular baffle, the LED light 26 is turned off, and the angle of incidence of the sun can be determined at this time.

[0039] It should be noted that the circuit board 11 also integrates a microcontroller of model MSP430I2041TPWR. The lithium battery powers the microcontroller. The microcontroller collects the direct sunlight signal received by two photosensitive elements 12 and the sunlight emission signal received by two photosensitive elements 13, and transmits them to a mobile phone or computer via the Type-C interface 14 and Type-C data cable. The reflectance of crops to different spectral bands of sunlight is then displayed on the mobile phone or computer.

[0040] Working principle: Based on the two sensitive spectral bands of the crop to be tested, replace two filters 20 and two filters 25 respectively. Then, stack the two filters 20, two neutral density filters 21, and two cosine correctors 22 in the two circular slots 1 opened on the lower inner wall of the two through holes 301 respectively. Install the upper sliding cover 3 in the strip groove 101 at the top of the upper housing 1. Stack the two neutral density filters 24 and two filters 25 in the two circular slots 2 opened on the upper inner wall of the two through holes 401 respectively. Install the lower sliding cover 4 in the recess of the lower housing 2. Then, insert one end of the Type-C data cable into the Type-C interface 14 and the other end into a mobile phone or computer. Then, align the two through holes 401 with the target crop. The system detects the leaves of crops and determines the angle of sunlight incidence. Simply hold the smart sensor and completely block sunlight from the photoresistor 28 with a circular baffle, turning off the LED 26. The incident light passes through two filters 21 and is collected by two photosensitive elements 12, yielding two light intensity values ​​(I), which are used as calibration values. Simultaneously, the reflected light from the leaves passes through two filters 25 and is collected by two photosensitive elements 13, yielding two light intensity values ​​(II). The ratio of these two light intensity values ​​to the two light intensity values ​​(I) represents the leaf's reflectivity. This reflectivity algorithm is written into the microcontroller, and a program written to a mobile phone or computer can then visually display the reflectivity of the two wavelengths. The reflectivity of these two wavelengths allows for the extraction of crop growth information (such as vegetation index, leaf area index, etc.).

[0041] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made by those skilled in the art to the above embodiments without departing from the scope of the present utility model's technical solution and based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model's technical solution.

Claims

1. A smart sensor for detecting crop growth information, characterized in that, include: The upper housing (1), lower housing (2), upper sliding cover (3), and lower sliding cover (4) are provided. The lower housing (2) is detachably fixed to the bottom of the upper housing (1). A circuit board (11) is fixedly installed inside the cavity between the upper housing (1) and the lower housing (2). Two photosensitive elements (12) are integrated on the left and right sides of the top center of the circuit board (11), and two photosensitive elements (13) are integrated on the left and right sides of the bottom center of the circuit board (11). Two detection holes (102) and two detection holes (201) are respectively opened on the left and right sides of the middle of the upper housing (1) and the lower housing (2). The upper sliding cover (3) and the lower sliding cover (4) are detachably snapped into the top center of the upper housing (1) and the bottom center of the lower housing (2). The upper sliding cover (3) is opened on the left and right sides of the top center. The circuit board (11) is provided with two through holes (301) and two through holes (401) are respectively opened on the left and right sides of the bottom end of the sliding cover (4). Two photosensitive elements (12), two detection holes (102) and two through holes (301) are respectively arranged. Two photosensitive elements (13), two detection holes (201) and two through holes (401) are respectively arranged. An optical lens assembly (1) capable of eliminating the influence of sunlight intensity and incident angle is provided in the through hole (301). An optical lens assembly (2) capable of eliminating the influence of sunlight intensity is provided in the through hole (401). A Type-C interface (14) is also integrated on the circuit board (11). The sunlight information detected by the photosensitive elements (12) and the photosensitive elements (13) is output through the Type-C interface (14).

2. The intelligent sensor for detecting crop growth information according to claim 1, characterized in that: Also includes: The stepped fixing blocks (7) are rectangular in shape, and the upper shell (1), lower shell (2) and circuit board (11) are rectangular in shape. Four stepped fixing blocks (7) are provided. The four stepped fixing blocks (7) are symmetrically fixedly connected to the four corners of the lower cavity of the upper shell (1). The four rectangular corners of the circuit board (11) are respectively fixedly installed on the lower part of the steps of the four stepped fixing blocks (7). The lower shell (2) is detachably fixedly installed on the upper part of the steps of the four stepped fixing blocks (7).

3. The intelligent sensor for detecting crop growth information according to claim 1, characterized in that: The upper shell (1) has a transverse through-slot (101) at the top center. Two parallel locking blocks (5) are symmetrically fixed to the right side of the bottom of the slot (101). A locking block (6) is fixed to the middle of the left side of the bottom of the slot (101). The cross-sections of the locking blocks (5) and (6) are both right trapezoidal and their top and bottom surfaces are parallel. The long side of the locking block (5) is transverse and parallel to the transverse long side of the slot (101). The long side of the locking block (6) is longitudinal and perpendicular to the transverse long side of the slot (101). The inclined surfaces of the locking blocks (5) and (6) face outward from the upper shell (1). The locking block (5) is not connected to the slot (101). The upper sliding cover (3) is rectangular and matches the strip groove (101). The bottom of the upper sliding cover (3) is pulled out to form an inner cavity 1 (302). Two locking blocks 5 (15) are symmetrically fixedly connected on the front and rear inner walls of the right side of the inner cavity 1 (302). A locking block 6 (16) is fixedly connected in the middle of the left inner wall of the inner cavity 1 (302). The cross-section of the locking block 6 (16) and the two locking blocks 5 (15) are all right-angled triangles. The inclined surfaces of the locking blocks 6 (16) and the locking blocks 5 (15) are both set towards the inner side of the inner cavity 1 (302). When the upper sliding cover (3) is fully matched with the strip groove (101), the inclined surfaces of the two locking blocks 5 (15) respectively contact and match the inclined surfaces of the two locking blocks 1 (5). The inclined surface of the locking block 6 (16) contacts and matches the inclined surface of the locking block 2 (6).

4. The intelligent sensor for detecting crop growth information according to claim 3, characterized in that: The optical lens assembly includes: a black foam cotton (19), a filter (20), a neutral density filter (21), and a cosine corrector (22). A circular groove (103) is provided at the bottom of the detection hole (102). Two hollow, stepped black foam cotton pieces (19) are provided, each inserted into one of the two circular grooves (103) and one of the two detection holes (102). The bottom of each black foam cotton piece (19) is connected to the circuit board (11). The top of the black foam cotton (19) is pressed into contact with the outside of the photosensitive element (12). The lower inner wall of the through hole (301) is provided with a circular slot. The circular slot contains a filter (20), an neutral density filter (21), and a cosine corrector (22) stacked from the inside to the outside. The top edge of the cosine corrector (22) is pressed into contact with the top surface of the circular slot. The bottom of the filter (20) is pressed into contact with the top of the black foam cotton (19).

5. The intelligent sensor for detecting crop growth information according to claim 1, characterized in that: The cross-section of the lower housing (2) is in a U-shape. On the left and right sides of the bottom end of the upper housing (1), two concave openings are symmetrically provided. The width and depth of the concave openings are respectively the same as the width and depth of the concave part of the lower housing (2). When the lower housing (2) is installed at the bottom end of the upper housing (1), the concave openings are aligned with the concave part of the lower housing (2). On the left side of the bottom end of the concave part of the lower housing (2), two third clamping blocks (8) are symmetrically and fixedly connected in the front and back. The two third clamping blocks (8) are parallel to each other. In the middle of the right side of the bottom end of the concave part of the lower housing (2), a fourth clamping block (9) is fixedly connected. The cross-sections of the third clamping block (8) and the fourth clamping block (9) are both right-angled trapezoids, and the top surface is parallel to the bottom surface. The long side of the third clamping block (8) is arranged horizontally, and the horizontal long side of the third clamping block (8) is parallel to the horizontal long side of the concave part of the lower housing (2). The long side of the fourth clamping block (9) is arranged vertically, and the vertical long side of the fourth clamping block (9) is perpendicular to the horizontal long side of the concave part of the lower housing (2). The inclined surfaces of the third clamping block (8) and the fourth clamping block (9) are both arranged towards the outside of the lower housing (2). The third clamping block (8) does not contact the side wall of the concave part of the lower housing (2). The lower sliding cover (4) is rectangular and is respectively matched with the concave part of the lower housing (2) and the two concave openings. An inner concave cavity two (402) is formed by shelling at the top end of the lower sliding cover (4). On the front and back inner walls on the left side of the inner concave cavity two (402), two seventh clamping blocks (17) are symmetrically and fixedly connected. In the middle of the right inner wall of the inner concave cavity two (402), an eighth clamping block (18) is fixedly connected. The cross-sections of the eighth clamping block (18) and the two seventh clamping blocks (17) are both right-angled triangles. The inclined surfaces of the eighth clamping block (18) and the seventh clamping blocks (17) are both arranged towards the inside of the inner concave cavity two (402). When the lower sliding cover (4) is completely matched with the concave part of the lower housing (2) and the two concave openings, the inclined surfaces of the two seventh clamping blocks (17) are respectively in contact and cooperation with the inclined surfaces of the two third clamping blocks (8), and the inclined surface of the eighth clamping block (18) is in contact and cooperation with the inclined surface of the fourth clamping block (9).

6. The intelligent sensor for detecting crop growth information according to claim 5, characterized in that: The optical lens assembly two includes: black foam cotton two (23), light-reducing filter two (24), and light filter two (25). Two cylinders (10) are fixedly connected to the top of the lower housing (2). The two cylinders (10) are coaxially arranged with the two detection holes two (201) respectively. The inner diameter of the cylinder (10) is larger than the diameter of the detection hole two (201). The black foam cotton two (23) is hollow stepped shaft and there are two of them. The two black foam cotton two (23) are respectively inserted into the two cylinders (10) and the two detection holes two (201). Inside, the top of the black foam cotton 2 (23) is pressed against the bottom of the circuit board (11). The black foam cotton 2 (23) is sleeved on the outside of the photosensitive element 2 (13). A circular slot 2 is opened on the upper inner wall of the through hole 2 (401). An neutral density filter 2 (24) and a filter 2 (25) are stacked in the circular slot 2 from the inside to the outside. The bottom edge of the filter 2 (25) is pressed against the bottom surface of the circular slot 2. The top of the neutral density filter 2 (24) is pressed against the bottom of the black foam cotton 2 (23).

7. The intelligent sensor for detecting crop growth information according to claim 1, characterized in that: An interface opening (104) is provided on the front end face of the upper housing (1), and the Type-C interface (14) is disposed in the interface opening (104) and cooperates with the interface opening (104).

8. The intelligent sensor for detecting crop growth information according to claim 1, characterized in that: Also includes: The circuit board (11) also integrates a lithium battery. An embedded hole (105) is provided on the rear end face of the upper housing (1). The LED lamp (26) is installed in the embedded hole (105). The solar shading mechanism (27) is fixedly installed on the rear side of the top of the upper housing (1). A photoresistor (28) is provided in the solar shading mechanism (27). The LED lamp (26), the photoresistor (28) and the lithium battery are connected in series. When the photoresistor (28) is completely blocked by the solar shading mechanism (27), the resistance of the photoresistor (28) is at its maximum and the LED lamp (26) is turned off.

9. A smart sensor for detecting crop growth information according to claim 8, characterized in that: The solar shading mechanism (27) includes: a circular base, columns and a circular baffle. Several columns are provided. The circular baffle is fixedly connected to the top of the circular base through several columns. The photoresistor (28) is conical. The diameter of the bottom circle of the photoresistor (28) is smaller than the diameter of the circular baffle. The bottom end of the photoresistor (28) is fixedly installed at the top of the circular base and located directly below the circular baffle.

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