Citrus fruit maturity measuring device

By designing a citrus ripening device with integrated hardness measurement, juice detection and light technology, the subjectivity and accuracy of traditional detection methods are solved, and a more efficient and accurate citrus ripening is achieved.

CN120177260APending Publication Date: 2025-06-20ENVIRONMENT & PLANT PROTECTION INST CHINESE ACADEMY OF TROPICAL AGRI SCI
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Patent Information

Application Number
CN202510339011.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-21
Publication Date
2025-06-20

AI Technical Summary

Technical Problem

Traditional citrus fruit maturity detection methods have problems such as strong subjectivity, low efficiency and poor consistency, and the ripening of citrus cannot be accurately judged by detecting hardness alone.

Method used

A citrus fruit ripening device is designed, including a measuring table, an extrusion tank, a hardness measuring mechanism, a steering mechanism, a juice measuring mechanism and a centrifugal heating mechanism. By detecting the hardness of the fruit and the light characteristics of the juice, combined with light and centrifugal heating technology, a more accurate maturity measurement is achieved.

Benefits of technology

It improves the accuracy and efficiency of citrus ripening, reduces the deviation of detection data, and can more accurately judge the ripening citrus.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention belongs to the technical field of citrus maturity measurement, and discloses a citrus fruit maturity measurement device which comprises a measurement table, an extrusion groove is fixed to the top end of the measurement table, and a centrifugal heating mechanism is fixed to one end in the measurement table. According to the device, when the device is used for measuring the maturity of citrus fruits, the citrus fruits can be placed in an extrusion groove and located between a first extrusion block and a second extrusion block, and a first air cylinder and a second air cylinder are started, so that the first extrusion block and the second extrusion block are close to each other and extrude the citrus fruits; the two groups of pressure measuring blocks are in contact and drive the two groups of pistons to extrude inwards, so that air pressure in inner cavities of the first extrusion block and the second extrusion block is compressed, pressure values are displayed through the two groups of pressure measuring meters, and the maturity of the fruits is detected through the hardness of the fruits; therefore, the purpose that the device can conveniently detect the hardness of the citrus fruits so as to judge the maturity of the fruits is achieved.
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Description

Technical Field

[0001] The present invention belongs to the technical field of citrus maturity determination, and specifically relates to a device for determining the maturity of citrus fruits. Background Art

[0002] In the citrus industry, the accurate determination of fruit maturity directly affects post-harvest sorting, storage, and commercial processing. Traditional maturity detection methods rely on manual experience, which has problems such as strong subjectivity, low efficiency, and poor consistency. The maturity of citrus fruits is determined by a fruit hardness meter, which can reasonably control the maturity of various fruits such as apples, pears, watermelons, and bananas, as well as the cultivation of improved varieties, picking time, and processing time.

[0003] This is mainly judged by measuring the hardness of fruits with a fruit hardness meter. It is suitable for use in fruit tree research departments, fruit tree farms, fruit companies, universities, and other units. The fruit hardness meter is small in size, light in weight, has an intuitive reading, and is convenient to carry. It is especially suitable for on-site detection. In the prior art, although physical detection means can perform quantitative analysis, the number of detection points and angles are limited, and it is easily interfered by the morphological differences of fruits, resulting in data deviation. Moreover, it is impossible to accurately judge the maturity of citrus fruits only by detecting the hardness of citrus fruits.

[0004] While measuring the maturity of citrus fruits by the hardness of the device, it can also detect the juice of citrus fruits, thereby improving the accuracy of users using the device to determine the maturity of citrus fruits. By separating pectin and suspended particles in citrus juice, the standard deviation of light transmittance is reduced, which is convenient for detection institutions to observe. Summary of the Invention

[0005] To solve the problems raised in the above background art, the present invention provides a device for determining the maturity of citrus fruits.

[0006] To achieve the above object, the present invention provides the following technical solution: A device for determining the maturity of citrus fruits, including a measurement table, a squeezing groove is fixed at the top of the measurement table, a hardness measurement mechanism is arranged inside the squeezing groove, a steering mechanism is installed at the top of the measurement table, a juice measurement mechanism is installed at one end inside the measurement table, and a centrifugal heating mechanism is fixed at one end inside the measurement table;

[0007] The hardness measurement mechanism includes a first cylinder, a first squeezing block, and a pressure measurement block. The first cylinder is fixed inside the squeezing groove, a first squeezing block is fixed at one end of the first cylinder, and a pressure measurement block is slidably connected inside the first squeezing block;

[0008] The steering mechanism includes a filter block, a collection pipe, and a solenoid valve. The filter block is installed at the top of the measurement table. The collection pipe is rotatably connected inside the measurement table, and a solenoid valve is installed at one end of the collection pipe.

[0009] The juice measurement mechanism includes a connection seat and a light collection box. The connection seat is fixed to the bottom end inside the measurement table, and a light collection box is fixed to the top of the connection seat.

[0010] Preferably, a piston is fixed to the outside of the pressure measuring block, a pressure gauge is fixed to the top end of the first cylinder, a second cylinder is fixed inside the extrusion groove, a second extrusion block is fixed to the outside of the second cylinder, the outer walls of the first extrusion block and the second extrusion block are close to the inner wall of the extrusion groove, the first extrusion block and the second extrusion block are slidably connected to the extrusion groove, there are two sets of pistons, and the pistons are symmetrically distributed about the central axis of the pressure measuring block.

[0011] Preferably, a first connecting rod is fixed to the bottom end of the collection pipe, a first bevel gear is fixed to the bottom end of the first connecting rod, a second connecting rod is rotatably connected inside the measurement table, a second bevel gear is fixed to the outside of the second connecting rod, a first servo motor is fixed to the outside of the second bevel gear, and a knob is fixed to the outside of the second bevel gear.

[0012] Preferably, the input end of the collection pipe is communicated with an extrusion groove. The first connecting rod is rotatably connected to the measurement table. There are several groups of teeth on the outer wall of the first bevel gear, and several groups of teeth on the outer wall of the second bevel gear. The first bevel gear and the second bevel gear are meshed. The first servo motor is fixed to the outside of the measurement table, and there are several groups of anti-slip lines on the outer wall of the knob. The anti-slip lines are arranged at equal intervals about the central axis of the knob.

[0013] Preferably, a drain port is communicated with one end of the light collection box. A third cylinder is fixed inside the connection seat, a combined light source is fixed to the telescopic end of the third cylinder, a light collection disc is rotatably connected inside the connection seat, a second servo motor is fixed to one end of the light collection disc, and a determination camera is fixed to the top end inside the measurement table.

[0014] Preferably, there are two sets of the third cylinders, and the third cylinders are symmetrically distributed about the central axis of the combined light source. The second servo motor is fixed to the outside of the connection seat, and there are three sets of determination cameras.

[0015] Preferably, the centrifugal heating mechanism includes a collection bucket and a third servo motor. The collection bucket is fixed to the bottom end inside the measurement table, and the third servo motor is fixed to the bottom end of the measurement table. A third connecting rod is fixed to the top end of the third servo motor, a stirring blade is fixed to the outside of the third connecting rod, a centrifugal filter cylinder is fixed to the top end of the third connecting rod, and a heating wire is fixed inside the collection bucket.

[0016] Preferably, a number of groups of filter holes are provided on the outer wall of the centrifugal filter cylinder, and the filter holes are evenly distributed about the central axis of the centrifugal filter cylinder. A number of groups of heating wires are provided, and the heating wires are arranged at equal intervals about the central axis of the collection bucket.

[0017] Preferably, a support base is installed at the bottom end of the measurement table. A first door body is movably connected to one end of the measurement table, and a second door body is movably connected to one end of the measurement table. A first display screen is fixed to the outside of the extrusion groove, a first control component is installed on the outside of the extrusion groove, a second display screen is fixed to the outside of the extrusion groove, and a second control component is provided on the outside of the extrusion groove.

[0018] Preferably, there are four groups of support bases, and the support bases are symmetrically distributed about the central axis of the measurement table. The first display screen, the first control component, the second display screen, and the second control component are symmetrically distributed about the central axis of the extrusion groove.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] Through the cooperation of structures such as the first cylinder, the first extrusion block, and the pressure measurement block, the present invention enables the device to place the citrus fruit in the extrusion groove and between the first extrusion block and the second extrusion block when measuring the maturity of the citrus fruit. Start the first cylinder and the second cylinder, so that the first extrusion block and the second extrusion block approach and squeeze the citrus fruit. Synchronously, the two pressure measurement blocks come into contact and drive the two pistons to squeeze inward, so that the air pressure in the inner chambers of the first extrusion block and the second extrusion block is compressed and the pressure values are displayed by the two pressure gauges. Furthermore, the maturity of the fruit is detected by the hardness of the fruit. Further, through the wrapping of the extrusion groove, the citrus juice can enter the inside of the collection pipe through the filter block for collection, so as to achieve the purpose of facilitating the device to detect the hardness of the citrus fruit and then judge the fruit maturity.

[0021] Through the cooperation of structures such as a filter block, a collection pipe, and a solenoid valve, the present invention enables the device to allow citrus juice to enter the interior of the collection pipe after passing through the filter block, and the solenoid valve can block the citrus juice. The user can start the first servo motor to drive the second connecting rod and the second bevel gear to rotate, thereby driving the first bevel gear, the first connecting rod, and the collection pipe to rotate, so that the juice outlet direction of the citrus juice can be changed. The user can choose whether to directly measure the light maturity of the citrus juice or to measure it after separating the pectin and suspended particles in the citrus juice, so as to achieve the purpose of facilitating the device to freely select the outlet position of the citrus juice.

[0022] Through the cooperation of structures such as a connection seat, a light collection box, and a drainage port, the present invention enables the device to start the combined light source to emit light to illuminate the citrus juice inside the light collection box after the citrus juice enters the interior of the light collection box, and observe the distribution state of the light through multiple measurement cameras to judge the maturity of the citrus fruit. Further, the maturity of the citrus fruit can be measured more accurately by starting the second servo motor to drive the light collection disc to rotate and starting the third cylinder to adjust the illumination direction of the combined light source, so as to achieve the purpose of facilitating the device to measure the maturity of the citrus fruit through the citrus juice.

[0023] Through the cooperation of structures such as a collection barrel, a third servo motor, and a third connecting rod, the present invention enables the device to start the third servo motor to drive the third connecting rod, the stirring blade, and the centrifugal filter barrel to rotate after the citrus juice enters the centrifugal filter barrel, pre-separate the pectin and suspended particles by rotation, reduce the standard of light transmittance, reduce the influence of juice turbidity on the light path scattering, and further improve the accuracy of the measurement by heating the juice with a heating wire, so as to achieve the purpose of facilitating the device to perform centrifugal heating on the citrus juice to improve the accuracy rate of detecting maturity. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is a schematic diagram of the cross-sectional structure of the main part of the present invention;

[0026] Figure 3 is a schematic diagram of the overall cross-sectional structure of the present invention;

[0027] Figure 4 is a schematic diagram of the overall right cross-sectional view of the present invention;

[0028] Figure 5 is a schematic diagram of the structure of the hardness measurement mechanism of the present invention;

[0029] Figure 6 is a schematic diagram of the structure of the steering mechanism of the present invention;

[0030] Figure 7 Structural schematic diagram of the juice measuring mechanism of the present invention;

[0031] Figure 8 Structural schematic diagram of the centrifugal heating mechanism of the present invention.

[0032] In the figure: 1, measuring table; 2, support seat; 3, first door body; 4, second door body; 5, extrusion groove; 6, hardness measuring mechanism; 601, first cylinder; 602, first extrusion block; 603, pressure measuring block; 604, piston; 605, pressure gauge; 606, second cylinder; 607, second extrusion block; 7, first display screen; 8, first control component; 9, second display screen; 10, second control component; 11, steering mechanism; 1101, filter block; 1102, collection pipe; 1103, solenoid valve; 1104, first connecting rod; 1105, first bevel gear; 1106, second connecting rod; 1107, second bevel gear; 1108, first servo motor; 1109, knob; 12, juice measuring mechanism; 1201, connecting seat; 1202, light collection box; 1203, drain port; 1204, third cylinder; 1205, combined light source; 1206, light collection disc; 1207, second servo motor; 1208, determination camera; 13, centrifugal heating mechanism; 1301, collection bucket; 1302, third servo motor; 1303, third connecting rod; 1304, stirring blade; 1305, centrifugal filter cylinder; 1306, heating wire. Specific implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Such as Figures 1 to 8As shown in the figure, the present invention provides a device for measuring the maturity of citrus fruits, including a measuring table 1. At the top of the measuring table 1, there is a fixed extrusion groove 5. Inside the extrusion groove 5, there is a hardness measuring mechanism 6. At the top of the measuring table 1, there is a steering mechanism 11 installed. At one end inside the measuring table 1, there is a juice measuring mechanism 12 installed. At one end inside the measuring table 1, there is a centrifugal heating mechanism 13 fixed. At the bottom of the measuring table 1, there is a support base 2 installed. At one end of the measuring table 1, there is a first door 3 movably connected. At one end of the measuring table 1, there is a second door 4 movably connected. Outside the extrusion groove 5, there is a first display screen 7 fixed. Outside the extrusion groove 5, there is a first control component 8 installed. Outside the extrusion groove 5, there is a second display screen 9 fixed. Outside the extrusion groove 5, there is a second control component 10 arranged. There are four groups of support bases 2, and the support bases 2 are symmetrically distributed about the central axis of the measuring table 1. The first display screen 7, the first control component 8, the second display screen 9, and the second control component 10 are symmetrically distributed about the central axis of the extrusion groove 5.

[0035] Adopting the above solution: By displaying the maturity data judged by the hardness of the citrus fruit on the surface of the first display screen 7 and displaying the maturity data judged by the citrus juice on the surface of the second display screen 9, it enables users to judge the maturity of citrus fruits more quickly and accurately when using the device, improving the accuracy of the measurement.

[0036] As Figures 1 to 8 shown in the figure, the hardness measuring mechanism 6 includes a first cylinder 601, a first extrusion block 602, and a pressure measuring block 603. The first cylinder 601 is fixed inside the extrusion groove 5. At one end of the first cylinder 601, there is a first extrusion block 602 fixed. Inside the first extrusion block 602, there is a pressure measuring block 603 slidably connected. Outside the pressure measuring block 603, there is a piston 604 fixed. At the top of the first cylinder 601, there is a pressure gauge 605 fixed. Inside the extrusion groove 5, there is a second cylinder 606 fixed. Outside the second cylinder 606, there is a second extrusion block 607 fixed. The outer walls of the first extrusion block 602 and the second extrusion block 607 are close to the inner wall of the extrusion groove 5. The first extrusion block 602 and the second extrusion block 607 are slidably connected to the extrusion groove 5. There are two groups of pistons 604, and the pistons 604 are symmetrically distributed about the central axis of the pressure measuring block 603.

[0037] Adopting the above solution: By starting the first cylinder 601 and the second cylinder 606, the first extrusion block 602 and the second extrusion block 607 are made to approach and squeeze the citrus fruit. Synchronously, the two pressure measuring blocks 603 come into contact and drive the two pistons 604 to squeeze inward, so that the air pressure in the inner chambers of the first extrusion block 602 and the second extrusion block 607 is compressed and the pressure values are displayed through the two pressure gauges 605, thereby detecting the maturity of the fruit through the hardness of the fruit.

[0038] As Figures 1 to 8As shown in the figure, the steering mechanism 11 includes a filter block 1101, a collecting pipe 1102, and a solenoid valve 1103. The filter block 1101 is installed at the top of the measuring table 1. The collecting pipe 1102 is rotatably connected inside the measuring table 1. One end of the collecting pipe 1102 is installed with a solenoid valve 1103. A first connecting rod 1104 is fixed to the bottom end of the collecting pipe 1102. A first bevel gear 1105 is fixed to the bottom end of the first connecting rod 1104. A second connecting rod 1106 is rotatably connected inside the measuring table 1. A second bevel gear 1107 is fixed to the outside of the second connecting rod 1106. A first servo motor 1108 is fixed to the outside of the second bevel gear 1107. A knob 1109 is fixed to the outside of the second bevel gear 1107. The input end of the collecting pipe 1102 communicates with an extrusion groove 5. The first connecting rod 1104 is rotatably connected to the measuring table 1. A number of groups of teeth are provided on the outer wall of the first bevel gear 1105. A number of groups of teeth are provided on the outer wall of the second bevel gear 1107. The first bevel gear 1105 and the second bevel gear 1107 are meshed and connected. The first servo motor 1108 is fixed to the outside of the measuring table 1. A number of groups of anti-slip lines are provided on the outer wall of the knob 1109. The anti-slip lines are arranged at equal intervals about the central axis of the knob 1109.

[0039] Adopting the above solution: By starting the first servo motor 1108 to drive the second connecting rod 1106 and the second bevel gear 1107 to rotate, thereby driving the first bevel gear 1105, the first connecting rod 1104, and the collecting pipe 1102 to rotate, and opening the solenoid valve 1103 to discharge the citrus juice after rotating to the specified position, so that the juice outlet direction of the citrus juice can be changed.

[0040] As Figures 1 to 8 As shown in the figure, the juice measuring mechanism 12 includes a connecting seat 1201 and a light collecting box 1202. The connecting seat 1201 is fixed to the bottom end inside the measuring table 1. A light collecting box 1202 is fixed to the top end of the connecting seat 1201. One end of the light collecting box 1202 communicates with a drain port 1203. A third cylinder 1204 is fixed inside the connecting seat 1201. A combined light source 1205 is fixed to the telescopic end of the third cylinder 1204. A light collecting disc 1206 is rotatably connected inside the connecting seat 1201. A second servo motor 1207 is fixed to one end of the light collecting disc 1206. A measuring camera 1208 is fixed to the top end inside the measuring table 1. There are two groups of the third cylinders 1204, and the third cylinders 1204 are symmetrically distributed about the central axis of the combined light source 1205. The second servo motor 1207 is fixed to the outside of the connecting seat 1201. There are three groups of the measuring cameras 1208.

[0041] Adopt the above solution: The combined light source 1205 is activated to illuminate the citrus juice inside the light collection box 1202, and the maturity of the citrus fruit is judged by observing the distribution state of the light through multiple groups of measurement cameras 1208. Further, the rotation of the light collection disc 1206 can be driven by activating the second servo motor 1207, and the illumination direction of the combined light source 1205 can be adjusted by activating the third cylinder 1204, so as to measure the maturity of the citrus fruit more accurately. The mature juice shows a more obvious orange-yellow tone under light. This is mainly because after the decomposition of chlorophyll, the proportion of carotenoids such as β-carotene and lutein increases. And due to the high sugar-acid ratio of the mature juice, the refractive index of the juice increases, showing a brighter amber reflection under light. While the immature juice retains more chlorophyll, revealing a blue-green base under light, with a higher juice turbidity. The poor light transmittance is caused by the insufficient degradation of pectin substances. And the carotenoids in the mature juice undergo photooxidation under continuous light, and the color saturation drops by about 15% after 24 hours. The precipitation of sugar crystals leads to a decrease in light transmittance. While in the light, the chlorophyll in the immature juice decomposes rapidly, and the green base turns into yellowish-brown after 48 hours. The activity of pectinase increases, and the turbidity can be reduced by 30-50%. The maturity of the citrus can be accurately measured through the monitoring of multiple groups of measurement cameras 1208.

[0042] As Figures 1 to 8 shown, the centrifugal heating mechanism 13 includes a collection barrel 1301 and a third servo motor 1302. The collection barrel 1301 is fixed at the bottom end inside the measurement table 1, and the third servo motor 1302 is fixed at the bottom end of the measurement table 1. A third connecting rod 1303 is fixed to the top end of the third servo motor 1302. A stirring blade 1304 is fixed to the outside of the third connecting rod 1303. A centrifugal filter cylinder 1305 is fixed to the top end of the third connecting rod 1303. A heating wire 1306 is fixed inside the collection barrel 1301. A number of filter holes are formed in the outer wall of the centrifugal filter cylinder 1305, and the filter holes are equidistantly distributed about the central axis of the centrifugal filter cylinder 1305. A number of heating wires 1306 are provided, and the heating wires 1306 are arranged equidistantly about the central axis of the collection barrel 1301.

[0043] Adopt the above solution: By activating the third servo motor 1302 to drive the third connecting rod 1303, the stirring blade 1304 and the centrifugal filter cylinder 1305 to rotate, the pectin and suspended particles are separated in advance by rotation, the light transmittance standard is reduced, and the influence of the juice turbidity on the light path scattering is reduced. And the juice is heated at a constant temperature by the heating wire 1306 to maintain the sample stability and avoid the refractive index fluctuation caused by thermal expansion and contraction in the subsequent light detection.

[0044] Working principle and usage process of the present invention: Place the citrus fruit in the extrusion groove 5, and position it between the first extrusion block 602 and the second extrusion block 607. Start the first cylinder 601 and the second cylinder 606, so that the first extrusion block 602 and the second extrusion block 607 approach and squeeze the citrus fruit. Synchronously, the two pressure measuring blocks 603 contact and drive the two pistons 604 to squeeze inward, causing the air pressure in the inner chambers of the first extrusion block 602 and the second extrusion block 607 to be compressed and the pressure values to be displayed through the two pressure gauges 605. Then, the maturity of the fruit is detected by the hardness of the fruit. Further, through the wrapping of the extrusion groove 5, the citrus juice can enter the inside of the collection pipe 1102 after passing through the filter block 1101 for collection. The solenoid valve 1103 can block the citrus juice. The user can drive the second connecting rod 1106 and the second bevel gear 1107 to rotate by starting the first servo motor 1108, and then drive the first bevel gear 1105, the first connecting rod 1104 and the collection pipe 1102 to rotate, so that the juice outlet direction of the citrus juice can be changed. The user can choose whether to directly measure the maturity by light of the citrus juice or to measure after separating the pectin and suspended particles in the citrus juice. And by starting the combined light source 1205 to emit light to illuminate the citrus juice inside the light collection box 1202, and observing the distribution state of the light through multiple measurement cameras 1208 to judge the maturity of the citrus fruit. Further, the illumination direction of the combined light source 1205 can be adjusted by starting the second servo motor 1207 to drive the light collection disc 1206 to rotate and starting the third cylinder 1204, so as to measure the maturity of the citrus fruit more accurately. The mature juice shows a more obvious orange-yellow tone under light. This is mainly because after the decomposition of chlorophyll, the proportion of carotenoids β-carotene and lutein increases. And due to the high sugar-acid ratio of the mature juice, the refractive index of the juice increases, showing a brighter amber reflection under light. While the immature juice retains more chlorophyll, showing a greenish-blue base under light, with a higher juice turbidity. The pectin substances are not fully degraded, resulting in poor light transmittance. And the carotenoids in the mature juice undergo photooxidation under continuous light, and the color saturation decreases by about 15% after 24 hours. The crystallization of sugar causes the light transmittance to decrease. While in the light, the chlorophyll in the immature juice decomposes rapidly, and the green base turns yellow-brown after 48 hours. The pectinase activity increases, and the turbidity can be reduced by 30-50%. Through the monitoring of multiple measurement cameras 1208, the maturity of the citrus can be measured accurately. The user can also rotate and first add the citrus juice into the centrifugal filter cylinder 1305, start the third servo motor 1302 to drive the third connecting rod 1303, the stirring blade 1304 and the centrifugal filter cylinder 1305 to rotate, and pre-separate the pectin and suspended particles by rotation, so as to reduce the light transmittance standard and reduce the influence of juice turbidity on the light path scattering. And the juice is heated at a constant temperature by the heating wire 1306 to maintain the sample stability.Avoid refractive index fluctuations caused by thermal expansion and contraction in subsequent light detection.

[0045] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A citrus fruit maturity measuring device, comprising a measuring platform (1), characterized in that: An extrusion groove (5) is fixed on the top of the measuring platform (1), a hardness measuring mechanism (6) is arranged inside the extrusion groove (5), a steering mechanism (11) is installed on the top of the measuring platform (1), a juice measuring mechanism (12) is installed at one end inside the measuring platform (1), and a centrifugal heating mechanism (13) is fixed at one end inside the measuring platform (1); The hardness measuring mechanism (6) comprises a first cylinder (601), a first extrusion block (602) and a pressure measuring block (603); the first cylinder (601) is fixed inside the extrusion groove (5); the first extrusion block (602) is fixed at one end of the first cylinder (601); and the pressure measuring block (603) is slidably connected inside the first extrusion block (602); The steering mechanism (11) comprises a filter block (1101), a collection pipe (1102) and a solenoid valve (1103); the filter block (1101) is mounted on the top of the measuring platform (1); the collection pipe (1102) is rotatably connected to the inside of the measuring platform (1); and a solenoid valve (1103) is mounted on one end of the collection pipe (1102); The juice measuring mechanism (12) comprises a connecting seat (1201) and a light collecting box (1202); the connecting seat (1201) is fixed to the bottom end inside the measuring platform (1); and the light collecting box (1202) is fixed to the top end of the connecting seat (1201).

2. The citrus fruit maturity measuring device according to claim 1, characterized in that: A piston (604) is fixed to the outside of the pressure measuring block (603), a pressure gauge (605) is fixed to the top of the first cylinder (601), a second cylinder (606) is fixed to the inside of the extrusion groove (5), a second extrusion block (607) is fixed to the outside of the second cylinder (606), the outer walls of the first extrusion block (602) and the second extrusion block (607) are close to the inner wall of the extrusion groove (5), the first extrusion block (602) and the second extrusion block (607) are slidably connected to the extrusion groove (5), and two groups of pistons (604) are provided, and the pistons (604) are symmetrically distributed about the central axis of the pressure measuring block (603).

3. The citrus fruit maturity measuring device according to claim 1, characterized in that: A first connecting rod (1104) is fixed to the bottom end of the collecting tube (1102), a first bevel gear (1105) is fixed to the bottom end of the first connecting rod (1104), a second connecting rod (1106) is rotatably connected to the inside of the measuring platform (1), a second bevel gear (1107) is fixed to the outside of the second connecting rod (1106), a first servo motor (1108) is fixed to the outside of the second bevel gear (1107), and a knob (1109) is fixed to the outside of the second bevel gear (1107).

4. The citrus fruit maturity measuring device according to claim 3, characterized in that: The input end of the collecting tube (1102) is connected to an extrusion groove (5); the first connecting rod (1104) is rotatably connected to the measuring platform (1); the outer wall of the first bevel gear (1105) is provided with a plurality of groups of teeth; the outer wall of the second bevel gear (1107) is provided with a plurality of groups of teeth; the first bevel gear (1105) and the second bevel gear (1107) are meshingly connected; the first servo motor (1108) is fixed to the outside of the measuring platform (1); the outer wall of the knob (1109) is provided with a plurality of groups of anti-slip grooves; the anti-slip grooves are arranged at equal intervals about the central axis of the knob (1109).

5. The citrus fruit maturity measuring device according to claim 1, characterized in that: One end of the light collecting box (1202) is connected to a drainage port (1203); a third cylinder (1204) is fixed inside the connecting seat (1201); a combined light source (1205) is fixed to the telescopic end of the third cylinder (1204); a light collecting disc (1206) is rotatably connected inside the connecting seat (1201); a second servo motor (1207) is fixed to one end of the light collecting disc (1206); and a measuring camera (1208) is fixed to the top end inside the measuring platform (1).

6. The citrus fruit maturity measuring device according to claim 5, characterized in that: The third cylinders (1204) are provided in two groups, and the third cylinders (1204) are symmetrically distributed about the central axis of the combined light source (1205). The second servo motor (1207) is fixed on the outside of the connecting seat (1201), and the measuring cameras (1208) are provided in three groups.

7. The citrus fruit maturity measuring device according to claim 1, characterized in that: The centrifugal heating mechanism (13) comprises a collecting barrel (1301) and a third servo motor (1302); the collecting barrel (1301) is fixed at the bottom end of the measuring platform (1); the third servo motor (1302) is fixed at the bottom end of the measuring platform (1); a third connecting rod (1303) is fixed at the top end of the third servo motor (1302); a stirring blade (1304) is fixed to the outside of the third connecting rod (1303); a centrifugal filter cartridge (1305) is fixed to the top end of the third connecting rod (1303); and a heating wire (1306) is fixed to the inside of the collecting barrel (1301).

8. The citrus fruit maturity measuring device according to claim 7, characterized in that: The outer wall of the centrifugal filter cylinder (1305) is provided with a plurality of groups of filter holes, and the filter holes are distributed at equal intervals about the central axis of the centrifugal filter cylinder (1305). The heating wires (1306) are provided with a plurality of groups, and the heating wires (1306) are arranged at equal intervals about the central axis of the collection barrel (1301).

9. The citrus fruit maturity measuring device according to claim 1, characterized in that: A support seat (2) is installed at the bottom end of the measuring platform (1), one end of the measuring platform (1) is movably connected to a first door body (3), and one end of the measuring platform (1) is movably connected to a second door body (4). A first display screen (7) is fixed to the outside of the extrusion groove (5), a first control component (8) is installed to the outside of the extrusion groove (5), a second display screen (9) is fixed to the outside of the extrusion groove (5), and a second control component (10) is arranged on the outside of the extrusion groove (5).

10. The citrus fruit maturity measuring device according to claim 9, characterized in that: The support base (2) is provided in four groups, the support base (2) is symmetrically distributed about the central axis of the measuring platform (1), and the first display screen (7), the first control component (8), the second display screen (9), and the second control component (10) are symmetrically distributed about the central axis of the extrusion groove (5).