A rapid detection device for grain quality index

Abstract

The present invention relates to a rapid detection device for grain quality indicators, the rapid detection device for grain quality indicators comprising a detection chamber, the detection chamber comprising a tube body and a sealing cover rotatably mounted at one end of the tube body, an ultra-wideband signal transmitter is arranged at one end of the tube body away from the sealing cover, an ultra-wideband signal receiver is arranged on the sealing cover, the ultra-wideband signal transmitter and the ultra-wideband signal receiver are adapted to each other; a connecting rod is arranged on the detection chamber, a handle is arranged on the connecting rod, a mobile power supply is arranged on the handle, and a controller is arranged on the connecting rod. The present invention uses an ultra-wideband signal of a specific frequency to detect the moisture content of grains, and obtains an effective detection distance by stacking model modules, eliminating the interference of gaps between grains on the detection, greatly improving the detection accuracy, enhancing the reliability of grain moisture content detection, and is easy to carry, and can be used for rapid sampling detection.

Description

Technical Field

[0001] The invention belongs to the technical field of grain detection, and in particular relates to a grain quality index rapid detection device. Background Art

[0002] During the grain storage process, grain needs to be tested, and the moisture content of grain is the main content of the test. Too high a moisture content can easily cause the grain to germinate, become moldy, and become difficult to store. Too low a moisture content can destroy the internal physical structure of the grain, thereby reducing its nutritional value. At present, most methods for testing grain moisture content use infrared irradiation, which can only detect the moisture on the surface of the grain, and the results obtained are very inaccurate. In addition, the existing methods do not consider the gaps between the grains, which will cause errors in the results.

[0003] Therefore, it is necessary to provide a new grain quality index rapid detection device to solve the above technical problems. Summary of the invention

[0004] The purpose of the present invention is to provide a grain quality index rapid detection device in order to solve the above-mentioned problem.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A grain quality index rapid inspection device comprises a detection chamber, wherein the detection chamber comprises a tube body and a sealing cover rotatably mounted at one end of the tube body, an ultra-wideband signal transmitter is arranged at one end of the tube body away from the sealing cover, an ultra-wideband signal receiver is arranged on the sealing cover, and the ultra-wideband signal transmitter and the ultra-wideband signal receiver are adapted to each other;

[0007] The detection chamber is provided with a connecting rod, the connecting rod is provided with a handle, the handle is provided with a mobile power supply, the connecting rod is provided with a controller, and the ultra-wideband signal transmitter, the ultra-wideband signal receiver and the mobile power supply are all connected to the controller;

[0008] The controller can obtain the energy attenuation of the ultra-wideband signal after passing through the grain. The controller is provided with a stacking model module, which is used to simulate the proportion of grain gaps per unit thickness after various types of grain are stacked, and calculate the effective distance of the ultra-wideband signal passing through the grain according to the distance between the ultra-wideband signal transmitter and the ultra-wideband signal receiver; the controller calculates the moisture content of the grain according to the effective distance and the energy attenuation.

[0009] As a further optimization solution of the present invention, a display screen is provided on the detection chamber, and the display screen is connected to the controller.

[0010] As a further optimization scheme of the present invention, the step of the controller obtaining the energy attenuation of the ultra-wideband signal after passing through the grain is:

[0011] The controller is provided with an attenuation calculation module, which obtains the initial energy value of the ultra-wideband signal during transmission from the ultra-wideband signal transmitter, and the ultra-wideband signal receiver inputs the final energy value of the received ultra-wideband signal into the attenuation calculation module, and the attenuation calculation module performs a difference operation between the final energy value and the initial energy value to obtain the energy attenuation.

[0012] As a further optimization scheme of the present invention, the specific steps of calculating the effective distance by the stacking model module are:

[0013] Input the food types into the stacking model module;

[0014] The stacking model module simulates the proportion x of grain gaps per unit thickness after the grain is stacked;

[0015] The effective distance h is calculated according to the following formula:

[0016] h=(1-x)*H

[0017] Wherein, h is the effective distance; x is the proportion of grain gaps per unit thickness; and H is the distance between the ultra-wideband signal transmitter and the ultra-wideband signal receiver.

[0018] As a further optimization scheme of the present invention, the specific steps of the controller calculating the moisture content of the grain according to the effective distance and the energy attenuation are:

[0019] The controller is provided with a moisture content calculation module. After obtaining the energy attenuation and the effective distance, the moisture content calculation module calculates the moisture content of the grain according to the following formula:

[0020] L=(Q-|τ|e -2ah cos2Bh) / 8.7aρ'kh}

[0021] Among them, L is the moisture content of the tested grain;

[0022] Q is the energy attenuation;

[0023] a is the dielectric constant of water contained in the grain;

[0024] ρ' is the density difference between the water contained in the grain and the grain;

[0025] h is the effective distance;

[0026] |τ| is the modulus of the reflection coefficient between air and the object being measured;

[0027] B is the phase difference of the ultra-wideband signal passing through the water-containing substance;

[0028] k is the calibration constant, which is different for different grain varieties.

[0029] As a further optimization scheme of the present invention, a storage module and a comparison and judgment module are provided in the controller. The storage module stores the moisture content range data of various types of grains that meet the standards. The comparison and judgment module is used to compare the moisture content calculated by the moisture content calculation module with the moisture content range data of the standards in the storage module, and judge whether the calculated moisture content is within the moisture content range data of the standards in the cloud database, output the result, and display it on the display screen.

[0030] The beneficial effects of the present invention are:

[0031] The present invention adopts a specific frequency ultra-wideband signal to detect the moisture content of grains, and obtains an effective detection distance through stacking model modules, thereby eliminating the interference of gaps between grains on detection, greatly improving the detection accuracy, enhancing the reliability of grain moisture content detection, and being easy to carry, and capable of rapid sampling detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the cross-sectional structure of the detection chamber of the present invention;

[0034] Figure 3 It is a principle block diagram of the present invention.

[0035] In the figure: 1. detection chamber; 2. tube body; 3. sealing cover; 4. ultra-wideband signal transmitter; 5. ultra-wideband signal receiver; 6. connecting rod; 7. handle; 8. mobile power supply; 9. controller; 10. display screen. DETAILED DESCRIPTION

[0036] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0037] The amplitude (i.e. energy) of the ultra-wideband signal is fixed. After the signal passes through a certain thickness of grain, the signal energy will be attenuated to a certain extent. The different moisture content of the grain will result in different attenuation values ​​of the signal energy.

[0038] like Figure 1-3As shown, a rapid inspection device for food quality indicators comprises a detection chamber 1, wherein the detection chamber 1 comprises a tube body 2 and a sealing cover 3 rotatably mounted at one end of the tube body 2, an ultra-wideband signal transmitter 4 is arranged at one end of the tube body 2 away from the sealing cover 3, and the frequency of the ultra-wideband signal emitted by the ultra-wideband signal transmitter 4 is 5.5-8.0 GHz, an ultra-wideband signal receiver 5 is arranged on the sealing cover 3, the ultra-wideband signal transmitter 4 and the ultra-wideband signal receiver 5 are adapted, and a display screen 10 is arranged on the detection chamber 1;

[0039] The detection chamber 1 is provided with a connecting rod 6, the connecting rod 6 is provided with a handle 7, the handle 7 is provided with a mobile power supply 8, the connecting rod 6 is provided with a controller 9, and the ultra-wideband signal transmitter 4, the ultra-wideband signal receiver 5, the mobile power supply 8 and the display screen 10 are all connected to the controller 9;

[0040] The controller 9 can obtain the energy attenuation of the ultra-wideband signal after passing through the grain. The controller 9 is provided with a stacking model module, and the stacking model module is used to simulate the proportion of grain gaps per unit thickness after various types of grains are stacked, and calculate the effective distance of the ultra-wideband signal passing through the grain according to the distance between the ultra-wideband signal transmitter 4 and the ultra-wideband signal receiver 5; the controller 9 calculates the moisture content of the grain according to the effective distance and the energy attenuation.

[0041] The controller 9 obtains the energy attenuation of the ultra-wideband signal after passing through the grain in the following steps:

[0042] The controller 9 is provided with an attenuation calculation module, which obtains the initial energy value of the ultra-wideband signal during transmission from the ultra-wideband signal transmitter 4. The ultra-wideband signal receiver 5 inputs the final energy value of the received ultra-wideband signal into the attenuation calculation module, and the attenuation calculation module performs a difference operation between the final energy value and the initial energy value to obtain the energy attenuation.

[0043] The specific steps of calculating the effective distance of the stacking model module are:

[0044] Input the food types into the stacking model module;

[0045] The stacking model module simulates the proportion x of grain gaps per unit thickness after the grain is stacked;

[0046] The effective distance h is calculated according to the following formula:

[0047] h=(1-x)*H

[0048] Among them, h is the effective distance; x is the proportion of grain gaps per unit thickness; H is the distance between the ultra-wideband signal transmitter 4 and the ultra-wideband signal receiver 5, that is, the length of the tube body 2.

[0049] The specific steps of the controller 9 calculating the moisture content of grain according to the effective distance and the energy attenuation are as follows:

[0050] The controller 9 is provided with a moisture content calculation module. After obtaining the energy attenuation and the effective distance, the moisture content calculation module calculates the moisture content of the grain according to the following formula:

[0051] L=(Q-|τ|e -2ah cos2Bh) / 8.7aρ'kh}

[0052] Among them, L is the moisture content of the tested grain;

[0053] Q is the energy attenuation;

[0054] a is the dielectric constant of water contained in the grain;

[0055] ρ' is the density difference between the water contained in the grain and the grain;

[0056] h is the effective distance;

[0057] |τ| is the modulus of the reflection coefficient between air and the object being measured;

[0058] B is the phase difference of the ultra-wideband signal passing through the water-containing substance;

[0059] k is the calibration constant, which is different for different grain varieties.

[0060] The controller 9 is provided with a storage module and a comparison and judgment module. The storage module stores the moisture content range data of various types of grains that meet the standards. The comparison and judgment module is used to compare the moisture content calculated by the moisture content calculation module with the moisture content range data of the storage module that meet the standards, and judge whether the calculated moisture content is within the moisture content range data of the cloud database and output the result, which is displayed on the display screen 10; the storage module stores the moisture content range data of various types of grains that meet the standards, and the types of grains are roughly divided into: oil crops, which at least include the following varieties: sunflower seeds, sesame, soybeans, peanuts, castor beans, perilla seeds and rapeseed;

[0061] Small grain crops, which include at least the following varieties: rice and wheat;

[0062] Coarse grain crops, which include at least the following varieties: corn, red bean, mung bean, black bean, buckwheat and barley;

[0063] Among them, the frequency of the ultra-wideband signal emitted by the ultra-wideband signal transmitter when detecting oil crops is 5.5GHz-6.5GHz; the frequency of the ultra-wideband signal emitted by the ultra-wideband signal transmitter when detecting fine grain crops is 6.5GHz-6.8GHz; the frequency of the ultra-wideband signal emitted by the ultra-wideband signal transmitter when detecting coarse grain crops is 6.8GHz-8.0GHz.

[0064] The working principle of the grain quality index rapid detection device provided by the present invention is as follows:

[0065] When grain detection is required, the sealing cover 3 is opened, the grain is loaded into the tube body 2 and then the sealing cover 3 is closed, the type of grain is input through the controller 9, the stacking model module calculates the effective distance of measurement, the ultra-wideband signal transmitter 4 and the ultra-wideband signal receiver 5 are started through the controller 9, the ultra-wideband signal transmitter 4 transmits the ultra-wideband signal, the ultra-wideband signal receiver 5 receives the ultra-wideband signal after passing through the grain, and then the ultra-wideband signal receiver 5 transmits the signal to the attenuation calculation module, the attenuation calculation module calculates the energy attenuation; then the moisture content calculation module calculates the moisture content of the grain according to the effective distance and the energy attenuation; then the calculated moisture content is compared with the qualified moisture content range data in the storage module through the comparison and judgment module, and it is judged whether the calculated moisture content is within the qualified moisture content range data and the result is output, and the result is displayed on the display screen 10.

[0066] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A rapid inspection device for grain quality indicators, characterized in that: The detection chamber (1) comprises a tube body (2) and a sealing cover (3) rotatably mounted on one end of the tube body (2); an ultra-wideband signal transmitter (4) is arranged at one end of the tube body (2) away from the sealing cover (3); an ultra-wideband signal receiver (5) is arranged on the sealing cover (3); the ultra-wideband signal transmitter (4) and the ultra-wideband signal receiver (5) are adapted to each other; The detection chamber (1) is provided with a connecting rod (6), the connecting rod (6) is provided with a handle (7), the handle (7) is provided with a mobile power supply (8), the connecting rod (6) is provided with a controller (9), and the ultra-wideband signal transmitter (4), the ultra-wideband signal receiver (5) and the mobile power supply (8) are all connected to the controller (9); The controller (9) can obtain the energy attenuation of the ultra-wideband signal after passing through the grain. The controller (9) is provided with a stacking model module, which is used to simulate the proportion of grain gaps per unit thickness after various types of grain are stacked, and calculate the effective distance of the ultra-wideband signal passing through the grain according to the distance between the ultra-wideband signal transmitter (4) and the ultra-wideband signal receiver (5); the controller (9) calculates the moisture content of the grain according to the effective distance and the energy attenuation; The controller (9) obtains the energy attenuation of the ultra-wideband signal after passing through the grain in the following steps: The controller (9) is provided with an attenuation calculation module, the attenuation calculation module obtains the initial energy value of the ultra-wideband signal during transmission from the ultra-wideband signal transmitter (4), the ultra-wideband signal receiver (5) inputs the final energy value of the received ultra-wideband signal into the attenuation calculation module, and the attenuation calculation module performs a difference operation between the final energy value and the initial energy value to obtain the energy attenuation; The specific steps of calculating the effective distance of the stacking model module are: Input the food types into the stacking model module; The stacking model module simulates the proportion x of grain gaps per unit thickness after the grain is stacked; The effective distance h is calculated according to the following formula: h=(1-x)*H Wherein, h is the effective distance; x is the proportion of grain gaps per unit thickness; H is the distance between the ultra-wideband signal transmitter (4) and the ultra-wideband signal receiver (5); The specific steps of the controller (9) calculating the moisture content of the grain according to the effective distance and the energy attenuation are: The controller (9) is provided with a moisture content calculation module. After obtaining the energy attenuation and the effective distance, the moisture content calculation module calculates the moisture content of the grain according to the following formula: L=(Q-|τ|e -2ah cos2Bh) / 8.7aρ'kh} Among them, L is the moisture content of the tested grain; Q is the energy attenuation; a is the dielectric constant of water contained in the grain; ρ' is the density difference between the water contained in the grain and the grain; h is the effective distance; |τ| is the modulus of the reflection coefficient between air and the object being measured; B is the phase difference of the ultra-wideband signal passing through the water-containing substance; k is the calibration constant, which is different for different grain varieties; The controller (9) is provided with a storage module and a comparison and judgment module. The storage module stores the moisture content range data of various types of grains that meet the standards. The comparison and judgment module is used to compare the moisture content calculated by the moisture content calculation module with the moisture content range data of the standards in the storage module, and judge whether the calculated moisture content is within the moisture content range data of the standards in the cloud database and output the result, which is displayed on the display screen (10).

2. A grain quality index rapid detection device according to claim 1, characterized in that: The detection chamber (1) is provided with a display screen (10), and the display screen (10) is connected to the controller (9).

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