A handheld fruit internal quality detection device

Abstract

The present application relates to the field of agricultural technology, and more particularly to a handheld fruit internal quality detection device, comprising a support, the support is provided with a controller, a movable handle and a movable clamp jaw for clamping fruits, a transmission mechanism is transmissionally connected between the movable handle and the movable clamp jaw, the movable handle controls the movable clamp jaw to close through the transmission mechanism, further comprising a light source module for generating transmitted light and a photoelectric detector for receiving the transmitted light, the photoelectric detector and the light source module are respectively electrically connected to the controller and are respectively arranged at different positions of the movable clamp jaw and correspondingly close to each other with the closing of the movable clamp jaw. The present application can not only perform real-time quality identification in the field of fruit picking, sampling and selecting, but also makes the operation process of fruit detection more convenient, greatly improves the detection efficiency, and can more deeply detect the internal fruit, so that the detection accuracy of fruit quality can be effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural technology, in particular to a handheld fruit internal quality detection device. BACKGROUND

[0002] The fruit internal quality nondestructive detection technology generally uses optical methods to predict the internal quality of fruits, such as sugar content, acidity, VC content, and ice sugar core size, etc. The detection means mainly includes a reflection sampling method and a transmission detection method. At the same time, when the fruit farmers pick the fruit, the dealers test, and the customers select, they often need to use handheld detection equipment for real-time detection on the spot to detect the internal quality of the fruit. In order to solve this problem, the existing solutions are: a handheld near-infrared probe and a detection method for nondestructive detection of the internal quality of fruits (a Chinese patent with patent number CN201010150517.0 is recorded) and a portable detection device and a detection method for rapidly detecting the internal quality of fruits (a Chinese patent with patent number CN201710434363.X is recorded). The former uses four specific wavelength LEDs as light sources, and the latter integrates 5-500 wavelength LED point light sources in the 500nm-1800nm interval to sample and analyze the full spectrum. Although the modeling analysis methods of the above two technical solutions are different, they both use the reflection sampling method, that is, the light source detector is divided and installed in an outer shell, and the light source is detected at one end of the fruit. On the one hand, the above two solutions still have the problems of inconvenient operation and low detection efficiency, and on the other hand, the reflection sampling method used in the above two solutions has a shallow detection depth of the fruit, and the detection accuracy is relatively low. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides a handheld fruit internal quality detection device, which can not only perform real-time quality identification on the spot during fruit picking, testing, and selection, but also has a more convenient operation process, greatly improves the detection efficiency, and can more deeply detect the internal quality of the fruit, so as to effectively improve the detection accuracy of the fruit quality.

[0004] The present application provides a handheld fruit internal quality detection device, which comprises a support, the support is provided with a controller, a movable handle, and a movable clamping jaw for clamping fruits, a transmission mechanism is transmissionally connected between the movable handle and the movable clamping jaw, the movable handle controls the movable clamping jaw to close through the transmission mechanism, and the device further comprises a light source module for generating transmission light and a photodetector for receiving the transmission light, the photodetector and the light source module are electrically connected to the controller and are respectively arranged at different positions of the movable clamping jaw and correspondingly close to each other with the closing of the movable clamping jaw.

[0005] According to the handheld fruit internal quality detection device, the movable clamping jaw comprises a plurality of flexible clamping fingers arranged in a circumferential direction, the transmission mechanism comprises a push plate, a movable shaft and a plurality of connecting rods respectively corresponding to the flexible clamping fingers, the movable handle is connected to the push plate through the movable shaft and can push the push plate to move back and forth, and each flexible clamping finger is respectively hinged at two ends to the push plate and the connecting rod.

[0006] According to the handheld fruit internal quality detection device, a reset spring is sleeved on the movable shaft, and two ends of the reset spring are respectively elastically abutted against the bracket and the push plate.

[0007] According to the handheld fruit internal quality detection device, a light-shielding curtain is connected between each flexible clamping finger, and a gap space between each flexible clamping finger is covered through the light-shielding curtain.

[0008] According to the handheld fruit internal quality detection device, the light source module comprises a plurality of LED lamps, and different wavelengths of transmission light for penetrating fruits are respectively generated through the LED lamps.

[0009] According to the handheld fruit internal quality detection device, the wavelength range of light generated by each LED lamp is 710nm-960nm.

[0010] According to the handheld fruit internal quality detection device, the light source module further comprises a key switch electrically connected to each LED lamp, and the key switch is triggered to be turned on by being pressed against fruits when the movable clamping jaw is closed.

[0011] According to the handheld fruit internal quality detection device, the bracket is further provided with a display screen and a battery electrically connected to the controller.

[0012] According to the handheld fruit internal quality detection device, a handheld frame is formed on the bracket, the movable handle is movably arranged in an internal space of the handheld frame, the controller and the battery are arranged at an end of the handheld frame and away from the movable handle, and the display screen is arranged on a side wall of the handheld frame.

[0013] According to the handheld fruit internal quality detection device, the lightening frequency of the LED lamp is modulated, and the received signal of the photodetector is filtered to reduce the interference of external ambient light.

[0014] The hand-held fruit internal quality detection device provided by the application is designed in the form of a clamping jaw, so that the fruit can be grabbed by folding the movable clamping jaw, and the photoelectric detector and the light source module are arranged at different positions of the movable clamping jaw, so that the photoelectric detector and the light source module correspond to each other and approach each other with the folding of the movable clamping jaw, so that the photoelectric detector and the light source module can be distributed on both sides of the fruit at the same time with the folding of the movable clamping jaw when the fruit is grabbed, so that the transmitted light generated by the light source module can fully penetrate the fruit and then be received by the photoelectric detector, and the photoelectric detector transmits the received transmitted light parameters to the controller, and the controller obtains the detection result related to the fruit quality, such as sugar content, acidity, VC content, and sugar core size, according to the model algorithm of the transmission detection method through the transmission parameters of the transmitted light, so that the detection device of the application can help to simultaneously perform real-time fruit quality identification when the fruit is grabbed in the fruit picking, sampling, and selecting field, and the operation process of fruit detection is more convenient, the detection efficiency is greatly improved, and the application is more suitable for the application scenarios of fruit picking by farmers, sampling by dealers, and selection by customers, has the characteristics of small structure, direct detection when taken, higher efficiency, and the like, and the fruit quality is identified by using the transmission detection method of the existing optical detection means, so that the fruit can be more deeply detected, and the detection accuracy of the fruit quality can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0016] Fig. 1 is a structural schematic diagram of the application in an open state;

[0017] Fig. 2 is a structural schematic diagram of the application in a folded state.

[0018] Reference signs:

[0019] 200-fruit; 1-bracket; 2-movable handle; 3-link; 4-flexible finger; 5-photoelectric detector; 6-light source module; 7-shade curtain; 8-push plate; 9-movable shaft; 10-handheld frame; 11-controller; 12-battery; 13-display screen; 14-Y-shaped platform; 15-center hole; 21-return spring; 61-key switch; 62-LED lamp. DETAILED DESCRIPTION

[0020] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below in conjunction with the drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present application.

[0021] As shown in the drawings, Figs. 1-2 A handheld fruit internal quality detection device comprises a support 1, the support 1 is provided with a controller 11, a movable handle 2 and movable clamping jaws for clamping fruits, a transmission mechanism is in transmission connection between the movable handle 2 and the movable clamping jaws, the movable handle 2 controls the movable clamping jaws to close and open through the transmission mechanism, the movable clamping jaws are further provided with a light source module 6 and a photoelectric detector 5, the light source module 6 is used for generating transmission light outwardly, the photoelectric detector 5 is used for receiving the transmission light generated from the light source module 6, the photoelectric detector 5 and the light source module 6 are electrically connected to the controller 11 respectively, the photoelectric detector 5 and the light source module 6 are respectively installed at different positions of the movable clamping jaws and approach each other correspondingly with the closing of the movable clamping jaws, that is to say, when the movable clamping jaws are opened, the photoelectric detector 5 and the light source module 6 are away from each other, when the movable clamping jaws need to clamp fruits and enter the closing state, the photoelectric detector 5 and the light source module 6 also approach each other correspondingly at both sides of the fruits, at this time, the transmission light generated by the light source module 6 can penetrate the fruits and then enter the photoelectric detector 5.

[0022] The light source module 6 is electrically connected to the controller 11, so that the wavelength of the transmission light generated by the light source module 6 can be adjusted by the controller 11, so that the transmission light can penetrate the fruits. The photoelectric detector 5 is electrically connected to the controller 11, so that the photoelectric detector 5 can transmit the received transmission light parameters to the controller 11, and the controller 11 can process the parameters of the transmission light.

[0023] The embodiment utilizes the transmission detection method in the existing optical detection means, compared with the reflection detection method, the transmission detection can obtain the internal quality signal of the deeper part (fruit core) and has high accuracy.

[0024] The embodiment is characterized in that the detection device is designed in the form of a clamp, and the transmission mechanism is arranged between the movable handle 2 and the movable clamp, so that the movable handle 2 can be used to control the movable clamp to close, thereby facilitating the grasping of fruits, and the photoelectric detector 5 and the light source module 6 are arranged at different positions of the movable clamp, so that the photoelectric detector 5 and the light source module 6 are correspondingly closed to each other with the closing of the movable clamp, thereby the photoelectric detector 5 and the light source module 6 can be distributed on both sides of the fruit with the closing of the movable clamp when the fruit is grasped, so that the transmitted light generated by the light source module 6 can fully penetrate the fruit and then be received by the photoelectric detector 5, and the photoelectric detector 5 transmits the received transmitted light parameters to the controller 11, and the controller 11 obtains the detection result related to the fruit quality, such as the sugar content, the acidity, the VC content, the size of the sugar core, etc., according to the model algorithm of the transmission detection method based on the penetration parameters of the transmitted light, so that the detection device can be used to simultaneously grasp the fruit and identify the quality of the fruit in real time when the fruit is picked, tested and selected, the operation process of the fruit detection is more convenient, the detection efficiency is greatly improved, and the detection device is more suitable for the application scenarios of fruit picking, testing and selection, has the characteristics of small structure, direct detection when taken, high efficiency, etc., and can more deeply detect the inside of the fruit by using the transmission detection method of the existing optical detection means, so that the detection accuracy of the fruit quality can be effectively improved.

[0025] Specifically, the surface of the movable handle 2 corresponding to the positions of the fingers is formed with four finger concave surfaces for facilitating the user to hold, so that the operation is more convenient.

[0026] Specifically, the movable clamp includes three flexible clamping fingers 4 arranged in a circle, the transmission mechanism includes a push plate 8, a movable shaft 9 and three connecting rods 3, the three connecting rods 3 are also arranged in a circle and correspond to the flexible clamping fingers 4 respectively, the movable handle 2 is connected to the push plate 8 through the movable shaft 9 and can push the push plate 8 to reciprocate, that is, the two ends of the movable shaft 9 are connected to the movable handle 2 and the push plate 8 respectively, in addition, the three flexible clamping fingers 4 are respectively hinged to the push plate 8 and the connecting rod 3 from both ends, that is, the push plate 8 and the connecting rod 3 are hinged at different positions of the flexible clamping fingers 4, and the two ends of each connecting rod 3 are respectively hinged to the flexible clamping finger 4 and the bracket 1, that is, one end of the connecting rod 3 is hinged to the flexible clamping finger 4, and the other end is hinged to the bracket 1.

[0027] It can be understood that in the above structural scheme, the flexible fingers 4 are respectively connected with the push plate 8 and the connecting rod 3 at two points to form a rotating pair, the bracket 1 is connected with the connecting rod 3 to form a rotating pair, and the handle 2, the movable shaft 9 and the push plate 8 form a moving pair, so that the bracket 1, the handle 2, each connecting rod 3 and each flexible finger 4 together form a plurality of four-bar mechanisms, wherein the bracket 1 is a rack, and the handle 2 is a driving member. Therefore, the user can control the reciprocating movement of the movable shaft 9 and the push plate 8 by moving the handle 2, and in the process of reciprocating movement of the push plate 8, each flexible finger 4 can reciprocate and deflect along the hinge shaft, so that each flexible finger 4 can approach each other and separate from each other, and when each flexible finger 4 approaches each other, the fruit can be grabbed, and when each flexible finger 4 separates from each other, the fruit can be released, which is convenient to use.

[0028] Specifically, the flexible fingers 4 are fin structures, which can help to avoid rigid contact of the flexible fingers 4 with the surface of the fruit, so as to realize adaptability to fruits of different sizes and protection of the skin of the fruit, and prevent the fruit from being damaged by pressure during clamping.

[0029] However, in the embodiment, the number of photodetectors 5 is two, and the number of light source modules 6 is one, and the two photodetectors 5 and the one light source module 6 are respectively distributed on the three flexible fingers 4, so that the transmitted light generated by the light source module 6 can be received from multiple directions, so that the detection accuracy of the quality of the fruit can be effectively improved.

[0030] Further, the bracket 1 is further provided with a display screen 13 and a battery 12 electrically connected to the controller 11. The bracket 1 is formed with a hand-held frame 10, the movable handle 2 is movably installed in the inner space of the hand-held frame 10, and the controller 11 and the battery 12 are arranged at the end of the hand-held frame 10 and away from the movable handle 2, so that part of the weight can be dispersed to the end position of the hand-held frame 10, avoiding that the detection device is too heavy at the claw position, reducing the mass at the claw end, and improving the flexibility of the device during use.

[0031] At the same time, the battery 12 can also be used to supply power to the photodetector 5 and each light source module 6. In addition, the detection result can be displayed outside by using the display screen 13, so as to facilitate the user to intuitively identify the quality of the fruit, and the display screen 13 is inlaid in the side wall of the hand-held frame 10, which is also convenient for observation.

[0032] Specifically, the top of the hand-held frame 10 is fixed with a Y-shaped platform 14, and the three extending ends of the Y-shaped platform are respectively hinged with each connecting rod 3, so that the structure is more stable. In addition, a center hole 15 is formed in the center of the Y-shaped platform 14, the movable shaft 9 passes through the center hole 15 of the Y-shaped platform 14 and extends to the bottom of the push plate 8 above and is connected with the push plate 8.

[0033] Specifically, the reset spring 21 is sleeved on the movable shaft 9, and the two ends of the reset spring 21 are elastically abutted against the bracket 1 and the push plate 8 respectively. Thus, each flexible clamp finger 4 can be automatically elastically reset.

[0034] Further, the light-shielding curtain 7 is connected between each flexible clamp finger 4, and the gap space between each flexible clamp finger 4 is covered by the light-shielding curtain 7. Thus, each flexible clamp finger 4 has the light-shielding curtain 7 similar to duck webbing, which can be used to shield external ambient light and thus can reduce external interference and avoid affecting the detection result.

[0035] Further, the light-shielding curtain 7 is made of elastic material, so that when the fruit is grabbed, the flexible clamp finger 4 can be stretched, and the detection device can grab the fruit with a larger volume, and the light-shielding curtain 7 can also shield the external environment.

[0036] Specifically, the light source module 6 includes a plurality of LED lamps 62, and each LED lamp 62 generates a different wavelength of transmission light for penetrating the fruit. Thus, the plurality of LED lamps 62 can penetrate the fruit with different wavelengths of transmission light and feedback to the photodetector 5, so that the controller 11 can obtain the penetration parameters of the transmission light with different wavelengths, and the controller 11 can obtain the detection results such as sugar content, acidity, VC content, and sugar core size according to the model algorithm of the transmission detection method based on the penetration information of the transmission light with different wavelengths.

[0037] Further, the wavelength range of the light generated by each LED lamp 62 is 710nm-960nm. When the fruit is detected, the chemical information represented by the transmittance of the light in this wavelength range can effectively represent the sugar acidity information after being combined with the algorithm, so as to optimize the detection effect.

[0038] Specifically, the wavelengths of the light generated by the six LED lamps 62 are 715nm, 760nm, 810nm, 840nm, 880nm, and 940nm respectively. This ensures that the controller 11 can obtain the detection results such as sugar content, acidity, VC content, and sugar core size based on the penetration information of the light with the six different wavelengths and according to the model algorithm of the transmission detection method, so that the results of each different detection index are more accurate.

[0039] Further, the lighting frequency of the LED lamp 62 is modulated, and the received signal of the photodetector 5 is filtered to reduce the interference of external ambient light.

[0040] Further, the light source module 6 further comprises a push-button switch 61 electrically connected to each LED lamp 62, which is triggered to turn on by being pressed by the fruit when the movable clamping jaw is closed. Specifically, the push-button switch 61 is also mounted on the surface of the flexible clamping finger 4, and it can be understood that when the fruit is grabbed, each flexible clamping finger 4 respectively presses the fruit, at which time the push-button switch 61 is triggered synchronously to trigger the opening of each LED lamp 62, that is, when the flexible clamping finger 4 is in contact with the fruit, the quality detection inside the fruit can be automatically started, so that the detection operation is more simple and more practical and convenient.

[0041] Based on the present embodiment, in actual use, the user holds the handheld frame 10 by the palm, and as long as the movable handle 2 is pinched and pulled down, each flexible clamping finger 4 can be closed inward and tightened to clamp the fruit 200. When each flexible clamping finger 4 contacts the fruit 200, the push-button switch 61 is triggered, and the six LED lamps 62 of different wavelengths are sequentially and timely lit. The light is transmitted through the fruit 200 and received by the photodetector module 5 and sent to the controller 11. The controller 11 obtains the detection results of the sugar content, the acidity, the VC content, and the size of the sugar core according to the model algorithm through the transmission information of the six different wavelengths of light, and displays the results on the display screen 13. When the fruit needs to be released, the movable handle 2 is loosened, and the reset spring 21 automatically pushes the push plate 8 upward, so that each flexible clamping finger 4 is separated from each other, thereby releasing the fruit inside.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hand-held fruit internal quality detection apparatus, characterized by, The application relates to a fruit picking device, which comprises a support (1) provided with a controller (11), a movable handle (2) and movable clamping paws for clamping fruits, a transmission mechanism is in transmission connection between the movable handle (2) and the movable clamping paws, the movable handle (2) controls the movable clamping paws to close through the transmission mechanism, a light source module (6) for generating transmitted light and a photoelectric detector (5) for receiving the transmitted light, the photoelectric detector (5) and the light source module (6) are electrically connected to the controller (11) respectively and are arranged at different positions of the movable clamping paws and approach each other correspondingly with the closing of the movable clamping paws. The movable clamping paws comprise a plurality of flexible clamping fingers (4) arranged in a circumferential direction, the transmission mechanism comprises a push plate (8), a movable shaft (9) and a plurality of connecting rods (3) corresponding to the flexible clamping fingers (4) respectively, the movable handle (2) is connected to the push plate (8) through the movable shaft (9) and can push the push plate (8) to move back and forth, each flexible clamping finger (4) is hingedly connected to the push plate (8) and the connecting rod (3) from two ends respectively, and the two ends of the connecting rod (3) are hingedly connected to the flexible clamping finger (4) and the support (1) respectively. A reset spring (21) is sleeved on the movable shaft (9), and the two ends of the reset spring (21) are elastically abutted against the support (1) and the push plate (8) respectively. An opaque curtain (7) is connected between the flexible clamping fingers (4), and the gap space between the flexible clamping fingers (4) is covered through the opaque curtain (7).

2. The handheld internal quality detection device of fruit according to claim 1, characterized in that, The light source module (6) comprises a plurality of LED lamps (62), and each LED lamp (62) generates transmitted light of different wavelengths for penetrating fruits.

3. The handheld fruit internal quality detection device according to claim 2, wherein, The wavelength range of the light generated by each LED lamp (62) is 710nm-960nm.

4. The handheld fruit internal quality detection device according to claim 2, wherein, The light source module (6) further comprises a key switch (61) electrically connected to each LED lamp (62), and the key switch (61) is triggered to be turned on by pressing the fruits when the movable clamping paws are closed.

5. The handheld internal quality detection device of fruit according to claim 1, characterized in that, A display screen (13) and a battery (12) electrically connected to the controller (11) are further arranged on the support (1).

6. The handheld internal quality detection device of fruit according to claim 5, characterized in that, A handheld frame (10) is formed on the support (1), the movable handle (2) is movably arranged in the internal space of the handheld frame (10), the controller (11) and the battery (12) are arranged at the end of the handheld frame (10) and face away from the movable handle (2), and the display screen (13) is arranged on the side wall of the handheld frame (10).

7. The handheld fruit internal quality detection device according to claim 2, wherein, The lightening frequency of the LED lamp (62) is modulated, and the received signal of the photoelectric detector (5) is filtered to reduce the interference of external ambient light.

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