CN219284979U - Novel fruit sugar degree infrared nondestructive measurement device - Google Patents

Abstract

The utility model discloses a novel fruit sugar degree infrared nondestructive measurement device which comprises a base, a dimple, a dovetail groove support, a dovetail groove, a sliding platform, a dovetail guide rail, an external light blocking sucker, a hollow screw, a screw fixing nut, a spring, an upper end fixing nut, an infrared light source circuit board, a sleeve, light emergent grinding glass, an internal light blocking sucker, an infrared LED lamp, a phototriode, light incident grinding glass, a signal wire, a lower end fixing nut and a power wire. The sliding platform can slide on the dovetail groove bracket according to the size of fruits so as to be adjusted to a proper position. The hollow screw rod can be controlled to move up and down by compressing the spring until the inner light blocking sucker and the outer light blocking sucker are clung to fruits, so that parasitic light interference is prevented. The utility model irradiates fruits with infrared light, and the photoelectric conversion circuit analyzes the transmitted infrared light intensity, thereby realizing nondestructive detection.

Description

Novel fruit sugar degree infrared nondestructive measurement device

Technical Field

The utility model relates to the technical field of photoelectron technology detection and analysis, in particular to a novel fruit sugar degree infrared nondestructive measurement device.

Background

China is one of the largest fruit producing countries, fruit importation countries and fruit exportation countries worldwide, the fruit planting area is over 1200 ten thousand hectares, and the yield is close to 2.8 hundred million tons. The quality of fruits directly affects sales conditions, and an important research topic is how to measure fruit sugar degree. The existing nondestructive detection instruments for fruits are mainly divided into two types, one type is that a conventional measuring instrument adopts destructive measurement, juice is analyzed after crushing and juicing fruits, waste is caused in the measuring process due to damage to fruit samples, the measuring efficiency is low, and defects such as individual sugar degree growth monitoring of the fruits cannot be realized. The other is a nondestructive testing glucometer represented by Japan Izod, and the infrared light is used for irradiating and analyzing the optical signals to obtain the fruit sugar degree. In summary, the nondestructive testing mode and the sale price of the current commercial testing instrument cannot be simultaneously considered, so that the popularization is difficult.

Disclosure of Invention

The utility model aims to design a novel fruit sugar degree infrared nondestructive measurement device, which avoids the defects of destructive type sugar degree detection and the cost performance of the existing products, is convenient and quick to use, saves time and labor, does not damage a test sample, realizes nondestructive detection, and can improve the measurement efficiency and assist in fruit planting.

The utility model is realized by the following technical scheme: the utility model provides a novel fruit sugar degree infrared nondestructive measurement device, includes base, dovetail support, sliding platform and hollow screw rod, the dovetail support sets up on the base, and sliding platform movable fit is on the dovetail support, the outside sucking disc that is in light is installed to the sliding platform below, the cover of hollow screw rod top has screw rod fixation nut, hollow screw rod runs through sliding platform, installs spring, upper end fixation nut, infrared light source circuit board, sleeve, play smooth sand glass, lower extreme fixation nut, inside smooth sucking disc that is in light on the inside hollow screw rod of sliding platform, install 9 infrared LED lamps on the infrared light source circuit board, interior sucking disc is equipped with the phototriode and goes into smooth sand glass, the pin of phototriode passes inside smooth sucking disc bottom is connected with the signal line, and the power is supplied power for infrared light source circuit board and phototriode through the power cord during the use.

Further, in order to better realize the novel fruit sugar degree infrared nondestructive measurement device, the following arrangement structure is adopted: and a dimple is arranged on the base, which is opposite to the sliding platform.

Further, in order to better realize the novel fruit sugar degree infrared nondestructive measurement device, the following arrangement structure is adopted: two dovetail grooves are formed in the dovetail groove support, dovetail rails are arranged on the sliding platform, and the dovetail grooves are matched with the dovetail rails.

Further, in order to better realize the novel fruit sugar degree infrared nondestructive measurement device, the following arrangement structure is adopted: the hollow screw rod is hung on the sliding platform through the screw rod fixing nut.

Further, in order to better realize the novel fruit sugar degree infrared nondestructive measurement device, the following arrangement structure is adopted: 9 infrared LED lamps on the infrared light source circuit board are distributed at equal intervals along the circumference, and the angle interval between two adjacent infrared LED lamps is 40 degrees.

Further, in order to better realize the novel fruit sugar degree infrared nondestructive measurement device, the following arrangement structure is adopted: when fruit is measured, the spring provides elasticity to make inside light blocking sucking disc and outside light blocking sucking disc all hug closely with fruit surface.

Further, in order to better realize the novel fruit sugar degree infrared nondestructive measurement device, the following arrangement structure is adopted: the light emitting module is formed by the infrared light source circuit board, the infrared LED lamp, the sleeve and the light emitting frosted glass, the light receiving module is formed by the phototriode and the light entering frosted glass, and the light emitting module is fixed on the hollow screw rod by the upper end fixing nut and the lower end fixing nut; the inner light blocking sucker fixes the light receiving module at the tail end of the hollow screw rod; in the vertical movement process of the hollow screw rod, the relative positions of the light emitting module and the light receiving module are unchanged.

Compared with the prior art, the utility model has the following advantages:

according to the utility model, damage to a test sample is avoided, the sugar degree information is obtained by utilizing infrared light irradiation, and the measuring efficiency is improved, apples are not lost, and time and labor are saved on the premise of not damaging fruits.

Compared with the existing nondestructive detection, the utility model avoids the influence of complex optical signals such as external spectrum, wavelength and the like, simplifies the technical scheme by utilizing the light intensity measurement, and can directly measure on the tree.

Compared with the prior similar technical products, the utility model has the advantages of low cost by about 10 times, economy and wider audience group.

According to the fruit sugar degree nondestructive testing device, the infrared LED lamp and the phototriodes are arranged, infrared light penetrates through fruits, different sugar degrees absorb infrared light to different degrees, the phototriodes detect the intensity of infrared light reflected by the fruits, and the fruit sugar degree can be measured by analyzing the electric signals carried by the phototriodes, so that nondestructive testing is realized.

The utility model utilizes the dovetail rail, so that the sliding platform can relatively slide in the dovetail groove to adapt to the size of the fruit to be detected, and the universality of the device is improved.

According to the utility model, the spring sleeved on the hollow screw rod is compressed, so that the light emitting module and the light receiving module can move upwards simultaneously until the inner light blocking sucker and the outer light blocking sucker are attached to the surface of the fruit, and the optimal measuring effect is achieved.

According to the utility model, the infrared light source circuit board is arranged, so that the angle interval between the infrared LED lamps is 40 degrees, and the irradiation intensity and the uniformity of light are greatly improved.

Drawings

Fig. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a cross-sectional view of the sliding platform of the present utility model.

Fig. 3 is a bottom view of the sliding platform of the present utility model.

Fig. 4 is a disassembled view of the internal structure of the present utility model.

Fig. 5 is a diagram showing a preferred circuit configuration of the infrared light source circuit board of the present utility model.

Fig. 6 is a preferred circuit diagram of the light receiving module of the present utility model.

FIG. 7 is a graph showing the change in sugar degree-voltage at 26℃in Shandong Red Fuji test using the measuring device.

The LED lamp comprises a 1-base, a 2-nest, a 3-dovetail bracket, a 4-dovetail, a 5-sliding platform, a 6-dovetail rail, a 7-external light blocking sucker, an 8-hollow screw, a 9-screw fixing nut, a 10-spring, an 11-upper end fixing nut, a 12-infrared light source circuit board, a 13-sleeve, 14-light emergent abrasive glass, a 15-internal light blocking sucker, a 16-infrared LED lamp, a 17-phototriode, 18-light emergent abrasive glass, 19-signal wires, 20-lower end fixing nuts and 21-power wires.

Detailed Description

The present utility model will be described in further detail with reference to examples, but embodiments of the present utility model are not limited thereto.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience in describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "disposed," "deployed," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, particularly by means other than by screwing, interference fit, riveting, screw-assisted connection, and the like, in any of a variety of conventional mechanical connection means. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Example 1:

as shown in figures 1-4, the novel fruit sugar degree infrared nondestructive measurement device is convenient and quick to use, time-saving and labor-saving, and free of damage to a test sample, can realize nondestructive measurement, can improve measurement efficiency and assist fruit planting, and comprises a base 1, a dovetail groove support 3, a sliding platform 5 and a hollow screw rod 8, wherein the dovetail groove support 3 is arranged on the base 1, the sliding platform 5 is movably matched on the dovetail groove support 3, an external light blocking sucker 7 is arranged below the sliding platform 5, a screw fixing nut 9 is sleeved above the hollow screw rod 8, the hollow screw rod 8 penetrates through the sliding platform 5, a spring 10, an upper end fixing nut 11, an infrared light source circuit board 12, a sleeve 13, light-emitting sand glass 14, a lower end fixing nut 20 and an internal light blocking sucker 15 are arranged on the infrared light source circuit board 12, a phototriode 17 and an internal light blocking sucker 18 are arranged in the internal sucker 15, a screw rod fixing nut 9 is sleeved above the hollow screw rod 8, the hollow screw rod 8 penetrates through the sliding platform 5, the hollow screw rod 8 is provided with a spring 10, the upper end fixing nut 11, the infrared light source circuit board 12, the sleeve 13 is provided with a light blocking glass 14, the lower end fixing nut 20 and the internal light blocking sucker 15, and the infrared light blocking sucker 17 is connected with the infrared light source circuit 17 through the infrared light source circuit board through the light source circuit 17.

When in use, the signal wire 19 is connected with a measurement display circuit (which can be independently arranged and can be directly arranged on the measuring device, and the preferable measurement display circuit is built on the basis of an STM32 type MCU chip), when in measurement, fruits to be detected can be limited below the sliding platform 5 by using a frame-shaped structure, and the inner light blocking sucker 15 is contacted with the surfaces of the fruits by moving the position of the sliding platform 5 on the dovetail groove bracket 3 up and down. At the same time, due to the self weight of the sliding platform 5, the spring 10 which is sleeved on the hollow screw 8 is compressed, so that the hollow screw 8 moves upwards. When the inner light blocking sucker 15 and the outer light blocking sucker 7 are tightly attached to the surfaces of fruits, the position adjustment is completed at the moment, so that no external light enters an infrared light irradiation part, and the interference of stray light is eliminated. Finally, the infrared light source circuit board 12 is electrified, the infrared light emitted by the infrared LED lamp 16 irradiates into the fruit to be detected, part of reflected light is received by the phototriode 17 through the fruit, then the sugar degree matching is completed according to the voltage generated by measuring the reflected light through the measurement display circuit, and the nondestructive detection can be completed, as shown in fig. 7, at 26 ℃, the sugar degree-voltage change curve of Shandong red Fuji is detected by using the measurement device.

Voltage and sugar degree matching process: and (3) detecting a large amount of fruit samples of the same variety at a certain temperature, recording voltage values corresponding to the emergent light, simultaneously adopting a standard glycometer to measure the sugar degree of each sample, and fitting the data to obtain the sugar degree-voltage relationship of the fruit of the variety at the temperature. Similarly, the utility model can be used for measuring the sugar degree-voltage relationship of different varieties of fruits, and a large amount of sample data ensures the accuracy of the fitting relationship. In actual measurement, therefore, the known voltage value is calculated from the fitted polynomial function (y=2×10 ^-5 x ² -0.0324 x+24.712) the corresponding sugar degree can be calculated, thereby realizing non-destructive detection.

Example 2:

the embodiment is further optimized based on the above embodiment, and the same features as the foregoing technical solutions are not repeated herein, as shown in fig. 1 to fig. 4, and in order to better implement the novel infrared nondestructive measurement device for fruit sugar degree according to the present utility model, the following arrangement structure is specifically adopted: be provided with nest 2 to slide platform 5 department on the base 1, when using, owing to nest 2's setting, can directly put the apple that waits to detect in nest 2 to need not to restrict the apple that waits to detect in slide platform 5 below with extra limit structure, thereby reach better detection effect.

Example 3:

the embodiment is further optimized on the basis of any one of the embodiments, and the same features as the foregoing technical solutions are not repeated herein, as shown in fig. 1 to fig. 4, and in order to better implement the novel infrared nondestructive measurement device for fruit sugar degree according to the present utility model, the following arrangement structure is specifically adopted: two dovetail grooves 4 are formed in the dovetail groove bracket 3, a dovetail rail 6 is arranged on the sliding platform 5, and the dovetail grooves 4 are matched with the dovetail rail 6; so that the measuring device detects. The inner light blocking sucker 15 and the outer light blocking sucker 7 on the sliding platform 5 can be clung to the fruit to be measured by changing the position of the dovetail rail 6 on the dovetail groove 4 according to the size of the fruit to be measured.

Example 4:

the embodiment is further optimized on the basis of any one of the embodiments, and the same features as the foregoing technical solutions are not repeated herein, as shown in fig. 1 to fig. 4, and in order to better implement the novel infrared nondestructive measurement device for fruit sugar degree according to the present utility model, the following arrangement structure is specifically adopted: the hollow screw rod 8 is hung on the sliding platform 5 through the screw rod fixing nut 9; namely, a screw fixing nut 9 sleeved above the hollow screw 8 is arranged, so that the bottom surface of the screw fixing nut 9 is in contact with the sliding platform 5, but no connection exists, and the hollow screw 8 can move up and down in the sliding platform 5.

Example 5:

the embodiment is further optimized on the basis of any one of the embodiments, and the same features as the foregoing technical solutions are not repeated herein, as shown in fig. 1 to fig. 4, and in order to better implement the novel infrared nondestructive measurement device for fruit sugar degree according to the present utility model, the following arrangement structure is specifically adopted: the 9 infrared LED lamps 16 on the infrared light source circuit board 12 are distributed at equal intervals along the circumference, and the angle interval between two adjacent infrared LED lamps 16 is 40 degrees, so that the irradiation intensity of light and the uniformity of light are greatly improved.

Example 6:

the embodiment is further optimized on the basis of any one of the embodiments, and the same features as the foregoing technical solutions are not repeated herein, as shown in fig. 1 to fig. 4, and in order to better implement the novel infrared nondestructive measurement device for fruit sugar degree according to the present utility model, the following arrangement structure is specifically adopted: when fruit is measured, the spring 10 provides elasticity, so that the inner light blocking sucker 15 and the outer light blocking sucker 7 are tightly attached to the surface of the fruit, and no external light enters the infrared light irradiation part, so that stray light interference is eliminated, and the optimal measurement effect is achieved.

Example 7:

the embodiment is further optimized on the basis of any one of the embodiments, and the same features as the foregoing technical solutions are not repeated herein, as shown in fig. 1 to fig. 4, and in order to better implement the novel infrared nondestructive measurement device for fruit sugar degree according to the present utility model, the following arrangement structure is specifically adopted: the infrared light source circuit board 12, the infrared LED lamp 16, the sleeve 13 and the light-emitting frosted glass 14 form a light-emitting module, the phototransistor 17 and the light-entering frosted glass 18 form a light-receiving module, and the upper end fixing nut 11 and the lower end fixing nut 20 fix the light-emitting module on the hollow screw rod 8; the inner light blocking sucker 15 fixes the light receiving module at the tail end of the hollow screw rod 8; in the up-and-down movement process of the hollow screw rod 8, the relative positions of the light emitting module and the light receiving module are unchanged, and errors caused by distance change are greatly reduced.

When the fruit-peeling machine is used, after a power supply supplies power to the infrared light source circuit board 12 and the phototriode 17 through the power line 21, the infrared sensing circuit board 12 drives the infrared LED lamp 16 to emit infrared light to irradiate fruits, the reflected infrared light is received by the phototriode 17, the illumination conduction characteristic of the reflected infrared light can generate voltage, an optical signal is converted into an electric signal which is easy to analyze, the electric signal is transmitted to the measurement display circuit through the signal line 19, and according to the voltage generated by measuring reflected light, the sugar degree matching is completed, so that the nondestructive detection can be completed.

Example 8:

the present embodiment is further optimized based on any one of the foregoing embodiments, and is the same as the foregoing technical solutions, and is not described herein, as shown in fig. 1 to 6, when the infrared light source circuit board 12 is specifically configured for use, a preferred specific circuit is designed, as shown in fig. 6, and includes a step-down constant current source PT4115, a capacitor C (100 uF), a resistor R (0.33 Ω), an inductance L (68 uH), a zener diode Z, 9 infrared LED lamps 16 (preferably, infrared LED lamps with luminous intensity of 965nm, that is, LEDs 1 to 9) are adopted, and an MCU chip STM32 is connected to a DIM pin of the step-down constant current source PT 4115; the preferred circuit of the light receiving module is shown in fig. 6, and comprises a phototriode Q (S2386-18K) 17, 3 resistors (R1 (2K), R2 (10K) and R3 (200K)), an operational amplifier U (LM 358), and the output of the operational amplifier is connected with an MCU (STM 32); the power supply adopts a 12V direct current stabilized voltage power supply.

When the infrared light source circuit board is used, a 12V direct-current stabilized power supply supplies power to the infrared light source circuit board 12 and the light receiving module (phototriode 17) through the power line 21, after the infrared light source circuit board is electrified, the infrared LED lamp 16 emits infrared light with specified wavelength, the phototriode 17 converts a light intensity signal into a voltage signal which is easy to analyze, and meanwhile, the voltage is amplified by the LM358 for 20 times and then is sent to the STM32 of the measurement display circuit. The measurement display circuit has two main functions:

1. a pulse signal with a period of 100ms is generated to control the infrared light source circuit board 12 to light the infrared LED lamp 16.

2. And carrying out A/D conversion on the output voltage of the light receiving module, converting the output voltage into an analog voltage value, and then carrying out data analysis to obtain a sugar degree value.

Fructose has an absorption effect on infrared light, fruits with different sugar contents have different absorption degrees on infrared light, the higher the sugar content is, the stronger the absorption on infrared light is, and the absorption is particularly remarkable in the wave band of 800nm-1000 nm. According to the utility model, a 12V direct current stabilized power supply is adopted to perform 600mA constant current driving on the infrared LED lamp 16 with the luminous intensity of 965nm, and the luminous power of the infrared LED lamp 16 is controlled to be fixed at 3W so as to generate infrared light with fixed luminous intensity. When the circuit is electrified, the infrared LED lamp 16 emits light to irradiate the fruit to be detected, after infrared light penetrates into the fruit, diffuse reflection occurs in the fruit, and part of reflected light penetrates out of the fruit around the irradiation point and is received by the infrared phototriode 17. Because of the existence of infrared absorption phenomenon, the intensity of emergent light is smaller than the intensity of incident light in value, but the intensity is not easy to be measured directly. Therefore, the higher the sugar content of the fruit, the weaker the intensity of the emitted light, and thus the smaller the voltage value converted from the intensity, i.e. the negative correlation between sugar content and voltage value.

Voltage and sugar degree matching process: and (3) detecting a large amount of fruit samples of the same variety at a certain temperature, recording voltage values corresponding to the emergent light, simultaneously adopting a standard glycometer to measure the sugar degree of each sample, and fitting the data to obtain the sugar degree-voltage relationship of the fruit of the variety at the temperature. Similarly, the utility model can be used for measuring the sugar degree-voltage relationship of different varieties of fruits, and a large amount of sample data ensures the accuracy of the fitting relationship. In actual measurement, therefore, the known voltage value is calculated from the fitted polynomial function (y=2×10 ^-5 x ² -0.0324x+24.712, wherein y is the sugar degree and x is the voltage) can calculate the corresponding sugar degree, thereby realizing the apple sugar degree nondestructive test.

Temperature also has an effect on the sugar degree measurement, which must be considered in practical applications (typically 26 ℃ for all).

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present utility model are within the scope of the present utility model.

Claims (7)

1. The utility model provides a novel fruit sugar degree infrared nondestructive measurement device which characterized in that: including base (1), dovetail support (3), slide platform (5) and hollow screw rod (8), dovetail support (3) set up on base (1), slide platform (5) movable fit is on dovetail support (3), outside sucking disc (7) that is in light is installed to slide platform (5) below, the cover of hollow screw rod (8) top has screw rod fixation nut (9), hollow screw rod (8) run through slide platform (5), install spring (10), upper end fixation nut (11), infrared light source circuit board (12), sleeve (13), play light sand glass (14), lower extreme fixation nut (20), inside sucking disc (15) that is in light, install 9 infrared LED lamps (16) on infrared light source circuit board (12), inside sucking disc (15) are equipped with photosensitive triode (17) and income light sand glass (18), the pin of photosensitive triode (17) is passed inside sucking disc (15) bottom is connected with signal line (19) when being used for infrared light source circuit (21) and power supply triode (17).

2. The novel fruit sugar degree infrared nondestructive measurement device according to claim 1, wherein: the base (1) is provided with a nest (2) facing the sliding platform (5).

3. The novel fruit sugar degree infrared nondestructive measurement device according to claim 1, wherein: two dovetail grooves (4) are formed in the dovetail groove support (3), dovetail rails (6) are mounted on the sliding platform (5), and the dovetail grooves (4) are matched with the dovetail rails (6).

4. The novel fruit sugar degree infrared nondestructive measurement device according to claim 1, wherein: the hollow screw (8) is hung on the sliding platform (5) through the screw fixing nut (9).

5. The novel fruit sugar degree infrared nondestructive measurement device according to claim 1, wherein: 9 infrared LED lamps (16) are distributed on the infrared light source circuit board (12) at equal intervals along the circumference.

6. The novel fruit sugar degree infrared nondestructive measurement device according to claim 1, wherein: when fruit is measured, the spring (10) provides elasticity, so that the inner light blocking sucker (15) and the outer light blocking sucker (7) are clung to the surface of the fruit.

7. The novel fruit sugar degree infrared nondestructive measurement device according to claim 1, wherein: the infrared light source circuit board (12), the infrared LED lamp (16), the sleeve (13) and the light-emitting frosted glass (14) form a light-emitting module, the phototriode (17) and the light-entering frosted glass (18) form a light-receiving module, and the upper end fixing nut (11) and the lower end fixing nut (20) fix the light-emitting module on the hollow screw (8); the inner light blocking sucker (15) is used for fixing the light receiving module at the tail end of the hollow screw rod (8); in the up-and-down movement process of the hollow screw (8), the relative positions of the light emitting module and the light receiving module are unchanged.

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