Portable multi-grain multi-parameter rapid intelligent detection device

Abstract

The utility model provides a portable multi-grain multi-parameter rapid intelligent detection device which comprises a machine body, a grain detection bin is arranged on the machine body, a capacitance sensor and a temperature sensor are arranged in the grain detection bin, the capacitance sensor is connected with the temperature sensor, and the temperature sensor is connected with the temperature sensor. The dielectric constant of to-be-detected grains is detected; and the temperature sensor is used for detecting the temperature of the to-be-detected grains. According to the technical scheme, by arranging the capacitance sensor and the temperature sensor, detection of the dielectric constant and the temperature of the to-be-detected grain can be achieved at the same time, the detection efficiency is improved, the detection time and the labor cost are saved, and the grain storage quality can be detected more comprehensively.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent detection, in particular to a portable multi-grain multi-parameter rapid intelligent detection device. Background Art

[0002] During grain storage, mildew and insect pests are the main factors that damage grain quality and endanger food security. In order to effectively avoid mildew and insect pests and safeguard food security, the bulk density, temperature, moisture content, and freshness of grains have become important parameters reflecting grain quality. It is very important to accurately and efficiently detect these parameters. Existing grain detection devices are not only unable to detect multiple parameters at the same time, but also have various disadvantages such as large size, high manufacturing cost, long detection time, and low automation of the detection process. For this reason, it is urgent to invent a portable multi-grain multi-parameter rapid intelligent detection device to achieve faster and more efficient grain detection. Utility Model Content

[0003] The utility model provides a portable multi-grain multi-parameter rapid intelligent detection device, which is used to improve detection efficiency, save detection time and labor costs, and more comprehensively detect grain storage quality.

[0004] The utility model provides a portable multi-grain multi-parameter rapid intelligent detection device, comprising a machine body, wherein a grain detection bin is arranged on the machine body.

[0005] The grain detection bin is provided with a capacitance sensor and a temperature sensor.

[0006] The capacitive sensor is used to detect the dielectric constant of the grain to be detected;

[0007] The temperature sensor is used to detect the temperature of the grain to be detected.

[0008] In the above technical solution, by setting up a capacitive sensor and a temperature sensor, the dielectric constant and temperature of the grain to be detected can be detected simultaneously, thereby improving detection efficiency, saving detection time and labor costs, and being able to more comprehensively detect the grain storage quality.

[0009] In a specific embodiment, the capacitive sensor includes an inner electrode and an outer electrode arranged in a package.

[0010] The inner electrode and the grain detection bin are arranged on the same central axis.

[0011] The outer electrode is arranged on the side wall of the grain detection bin. The capacitive sensor has a simple structure and high detection accuracy, thereby ensuring the accuracy of the grain moisture content.

[0012] In a specific implementation scheme, a gas sensor is provided in the grain detection bin.

[0013] The gas sensor is used to detect the freshness of the grain to be detected. The gas sensor determines the freshness of the grain to be detected by detecting the gas concentration of alcohols, ketones, aldehydes and carboxylic acids produced by the decomposition of carbohydrates, and has high sensitivity.

[0014] In a specific implementation scheme, a weighing platform is provided on the machine body, and a weighing sensor is provided on the weighing platform.

[0015] The weighing sensor is used to detect the weight of the grain to be detected. The weighing sensor weighs the grain to be detected with a fixed volume to determine the bulk density of the grain to be detected. The weighing sensor has a simple structure and ensures the accuracy and reliability of the detection.

[0016] In a specific implementation scheme, a bottom plate is provided at the bottom of the grain detection bin, and a movable baffle is provided on the bottom plate of the grain detection bin, and the movable baffle is used to open and close the discharge port of the grain detection bin;

[0017] The discharge port of the grain detection bin is arranged relative to the weighing platform. By arranging the movable baffle, the grain detection bin can be emptied quickly, saving detection time.

[0018] In a specific embodiment, the movable baffle is connected to a baffle control mechanism. By setting up the baffle control mechanism, the degree of automation is improved and the labor cost is reduced.

[0019] In a specific implementation scheme, the baffle control mechanism includes a stepper motor and a ball screw.

[0020] The stepper motor is fixedly connected to the machine body.

[0021] The power output shaft of the stepper motor is fixedly connected to the ball screw.

[0022] The movable baffle is fixedly connected to the slider of the ball screw. By arranging the stepping motor and the ball screw, the structure is simple and reliable, and the control accuracy and control reliability are improved.

[0023] In a specific embodiment, it further comprises a discharge box, wherein the discharge box is arranged on the weighing platform;

[0024] The discharging box is arranged relative to the discharging port of the grain detection bin. By arranging the discharging box, the discharging efficiency is improved, thereby improving the detection efficiency.

[0025] In a specific implementation scheme, a circuit box is provided on the machine body, and the circuit box is provided with a control circuit board.

[0026] The control circuit board is electrically connected to the capacitance sensor, the temperature sensor, the gas sensor, the weighing sensor and the stepping motor respectively. By setting the control circuit board, the automation degree is improved and the labor cost is reduced.

[0027] In a specific implementation method, a display screen is provided on the machine body, and the display screen is electrically connected to the control circuit board. By providing the display screen, the detection results can be output intuitively, thus achieving a better human-computer interaction function. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A structural schematic diagram (stereoscopic diagram) of a portable multi-grain multi-parameter rapid intelligent detection device provided by an embodiment of the utility model;

[0029] Figure 2 A structural schematic diagram (cross-sectional view) of a portable multi-grain multi-parameter rapid intelligent detection device provided by an embodiment of the utility model;

[0030] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0031] Figure 4 A schematic diagram of the structure of the baffle control mechanism provided by an embodiment of the utility model;

[0032] Figure 5 This is an electrical block diagram of a portable multi-grain multi-parameter rapid intelligent detection device provided in an embodiment of the utility model.

[0033] Among them, 1-upper cover, 2-upper cover handle, 3-gas sensor, 4-inner electrode fixing ring, 5-feed chute, 6-temperature sensor, 7-display screen, 8-circuit box door, 9-baffle A, 10-circuit box, 11-inner electrode, 12-grain measuring bin, 13-outer electrode, 14-cavity, 15-baffle B, 16-movable baffle, 17-discharge box handle, 18-discharge box, 19-weighing platform, 20-weighing sensor, 21-stepping motor, 22-ball screw. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present invention will become clearer and more specific.

[0035] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.

[0036] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] To facilitate understanding of the portable multi-grain multi-parameter rapid intelligent detection device provided by the embodiment of the utility model, its application scenario is first explained. The portable multi-grain multi-parameter rapid intelligent detection device provided by the embodiment of the utility model is used to improve detection efficiency, save detection time and labor costs, and more comprehensively detect the storage quality of grains. In the process of grain storage, mildew and insect pests are the main factors that damage grain quality and endanger food security. In order to effectively avoid mildew and insect pests and protect food security, the bulk density, temperature, moisture content, and freshness of grains become important parameters reflecting the quality of grains. It is very important to accurately and efficiently detect these parameters. The existing grain detection device is not only unable to detect multiple parameters at the same time, but also accompanied by various disadvantages such as large size, high manufacturing cost, long detection time, and low automation of the detection process. For this reason, the embodiment of the utility model provides a portable multi-grain multi-parameter rapid intelligent detection device to improve detection efficiency, save detection time and labor costs, and more comprehensively detect the storage quality of grains. The following is a detailed description of the embodiment in conjunction with specific drawings.

[0038] refer to Figures 1 to 5 , Figure 1 A structural schematic diagram (stereoscopic diagram) of a portable multi-grain multi-parameter rapid intelligent detection device provided by an embodiment of the utility model; Figure 2 A structural schematic diagram (cross-sectional view) of a portable multi-grain multi-parameter rapid intelligent detection device provided by an embodiment of the utility model; Figure 3 for Figure 2 A partial enlarged view of the middle A; Figure 4 A schematic diagram of the structure of the baffle control mechanism provided by an embodiment of the utility model; Figure 5 This is an electrical block diagram of a portable multi-grain multi-parameter rapid intelligent detection device provided in an embodiment of the utility model.

[0039] exist Figure 1 The embodiment of the utility model provides a portable multi-grain multi-parameter rapid intelligent detection device, including a machine body, on which a grain detection bin 12 is arranged.

[0040] The grain detection bin 12 is provided with a capacitance sensor and a temperature sensor 6.

[0041] Capacitive sensor for detecting the dielectric constant of the grain to be tested;

[0042] The temperature sensor 6 is used to detect the temperature of the grain to be detected.

[0043] In the above technical solution, by setting up the capacitive sensor and the temperature sensor 6, the dielectric constant and temperature of the grain to be detected can be detected simultaneously, thereby improving the detection efficiency, saving detection time and labor costs, and being able to more comprehensively detect the grain storage quality.

[0044] In a specific embodiment, the capacitive sensor includes an inner electrode 11 and an outer electrode 13 arranged in a package.

[0045] The inner electrode 11 and the grain detection bin 12 are arranged on the same central axis.

[0046] The outer electrode 13 is arranged as the side wall of the grain detection bin 12. The capacitance sensor has a simple structure and high detection accuracy, thereby ensuring the accuracy of the grain moisture content.

[0047] In a specific implementation scheme, a gas sensor 3 is provided in the grain detection bin 12.

[0048] The gas sensor 3 is used to detect the freshness of the grains to be tested. The gas sensor determines the freshness of the grains to be tested by detecting the concentration of alcohols, ketones, aldehydes and carboxylic acids produced by the decomposition of carbohydrates, and has high sensitivity.

[0049] In a specific implementation scheme, a weighing platform 19 is provided on the machine body, and a weighing sensor 20 is provided on the weighing platform 19.

[0050] The weighing sensor 20 is used to detect the weight of the grain to be detected. The weighing sensor weighs a fixed volume of the grain to be detected to determine the bulk density of the grain to be detected. The weighing sensor has a simple structure and ensures the accuracy and reliability of the detection.

[0051] In a specific implementation scheme, a bottom plate 15 is provided at the bottom of the grain detection bin 12, and a movable baffle 16 is provided on the bottom plate 15 of the grain detection bin 12, and the movable baffle 16 is used to open and close the discharge port of the grain detection bin 12;

[0052] The discharge port of the grain detection bin 12 is arranged relative to the weighing platform 19. By arranging the movable baffle, the grain detection bin can be emptied quickly, saving the time of detection.

[0053] In a specific embodiment, the movable baffle 16 is connected to a baffle control mechanism. By setting the baffle control mechanism, the degree of automation is improved and the labor cost is reduced.

[0054] In a specific embodiment, the baffle control mechanism includes a stepper motor 21 and a ball screw 22.

[0055] The stepper motor 21 is fixedly connected to the machine body.

[0056] The power output shaft of the stepper motor 21 is fixedly connected to the ball screw 22.

[0057] The movable baffle 16 is fixedly connected to the slider of the ball screw 22. By arranging the stepping motor and the ball screw, the structure is simple and reliable, and the control accuracy and control reliability are improved.

[0058] In a specific embodiment, it further includes a discharge box 18, which is disposed on a weighing platform 19;

[0059] The discharge box 18 is arranged relative to the discharge port of the grain detection bin 12. By arranging the discharge box, the discharge efficiency is improved, thereby improving the detection efficiency.

[0060] In a specific implementation scheme, a circuit box 10 is provided on the machine body, and the circuit box 10 is provided with a control circuit board.

[0061] The control circuit board is electrically connected to the capacitance sensor, the temperature sensor 6, the gas sensor 3, the weighing sensor 20 and the stepping motor 21. By setting the control circuit board, the automation degree is improved and the labor cost is reduced.

[0062] Specifically, the technical solution of the utility model integrates a temperature sensor, a weighing sensor, a moisture content detection system (implemented by a capacitive sensor), and a gas sensor, in order to realize the detection of grain temperature, bulk density, moisture content, and freshness. Both bulk density detection and temperature detection use traditional sensor methods with high accuracy. The detected temperature includes the temperature of the grain and the air temperature in the circuit box, using a temperature sensor. The principle of bulk density detection is to ensure that the volume of grains put into the grain measuring bin is constant each time, and the weight is measured using a weight sensor, and the weight is divided by the volume to obtain the bulk density. The moisture content detection is realized by a moisture content detection system, which specifically includes a grain measuring bin composed of two thin hollow circular tube electrodes with unequal radii and equal heights and a dielectric constant detection circuit, and the moisture content of the grain and the dielectric constant have a stable functional relationship. The capacitance method for detecting moisture content has the advantages of being non-destructive, fast, and low cost. Freshness detection is realized by a gas sensor, which detects the concentration of alcohols, ketones, aldehydes, and carboxylic acids produced by the decomposition of carbohydrates, with high sensitivity.

[0063] In a specific implementation method, a display screen 7 is provided on the machine body, and the display screen 7 is electrically connected to the control circuit board. By providing the display screen, the detection results can be outputted intuitively, thus achieving a better human-computer interaction function.

[0064] In a specific implementation scheme, in order to better understand the solution of the utility model, the following description is made: Figures 1 to 5 , including a machine body, a sensor and detection mechanism, a control circuit system and a discharging mechanism.

[0065] The machine body is provided with a display screen 7, a circuit box door 8, and an upper cover 1: the display screen 7 is used for human-machine interaction; the circuit box door 8 is detachable, which is convenient for maintaining the circuit in the circuit box; the upper cover 1 can be opened and closed, and a feed chute 5 can be seen after opening, and the feed chute 5 is used to load the grain to be tested;

[0066] The sensing and detecting mechanism comprises an inner electrode 11, an outer electrode 13, a grain measuring bin 12, a temperature sensor 6, a gas sensor 3, and a weighing sensor 20: the inner electrode 11 and the outer electrode 13 are two thin hollow circular tubes with different radii and equal heights, which are combined into a cylindrical capacitive sensor, and the space between the two electrodes is the grain measuring bin 12; the temperature sensor 6, the gas sensor 3, and the weighing sensor 20 are respectively placed on both sides of the top of the grain measuring bin 12 and below the discharge box 20, to detect the temperature, freshness and weight of the grains respectively;

[0067] The control circuit board includes the control circuit system, which is placed in the circuit box; the control circuit system includes a main controller, a dielectric constant detection circuit, a stepper motor drive circuit, a signal conditioning circuit, and a power supply system: the main controller uses an STM32F103 series single-chip microcomputer; the dielectric constant detection circuit is connected to the two electrodes of the cylindrical capacitance sensor to detect the dielectric constant, and then the main controller calculates the moisture content; the stepper motor drive circuit is used to drive the stepper motor; the signal conditioning circuit is used to amplify the electrical signal of the sensor; the power supply system includes a 12V lithium battery, a DC-DC circuit, and an LDO voltage stabilizing circuit to realize power supply to circuits at all levels; the specific structures and control principles of the main controller, the dielectric constant detection circuit, the stepper motor drive circuit, the signal conditioning circuit and the power supply system are all prior art and will not be repeated here;

[0068] The discharging mechanism includes a stepper motor 21 , a ball screw 22 , a movable baffle 16 , and a discharging box 18 : the stepper motor 21 moves, and the movable baffle 16 moves through the ball screw 22 , and the grains fall from the grain measuring bin 12 to the discharging box 18 .

[0069] In the above technical solution, the operator first takes out the discharge box 18 through the discharge box handle 17, empties the discharge box 18, and then selects "calibrate weighing sensor" on the display screen 7, and the detection value of the weighing sensor 20 will be calibrated to zero. The upper cover 1 is opened through the upper cover handle 2, and the grains to be tested are poured from the feed chute 5, and the grains will fall into the grain measuring bin 12. The type of grain to be tested is selected on the display screen 7 to start the test. After the main controller obtains the detection data of the temperature sensor 6, the gas sensor 3, and the dielectric constant detection circuit, it drives the stepper motor 21 to move the movable baffle 16, and the grains will fall into the discharge box 18. After the grains have fully fallen, the main controller obtains the detection data of the weight sensor 20, and calculates the temperature, bulk density, moisture content, and freshness of the grains based on all the data, and finally sends it to the display screen 7 for display.

[0070] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships in the working state of the present invention, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0071] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] The present invention has been described above in conjunction with preferred embodiments, but these embodiments are only exemplary and serve only as an illustration. On this basis, the present invention may be subjected to a variety of substitutions and improvements, all of which fall within the scope of protection of the present invention.

Claims

1. A portable multi-grain multi-parameter rapid intelligent detection device, characterized in that: The machine comprises a machine body, on which a grain detection bin (12) is arranged. The grain detection bin (12) is provided with a capacitance sensor and a temperature sensor (6). The capacitive sensor is used to detect the dielectric constant of the grain to be detected; The temperature sensor (6) is used to detect the temperature of the grain to be detected.

2. The portable multi-grain multi-parameter rapid intelligent detection device according to claim 1 is characterized in that: The capacitive sensor comprises an inner electrode (11) and an outer electrode (13) which are arranged in a package. The inner electrode (11) and the grain detection bin (12) are arranged on a common central axis. The outer electrode (13) is arranged as a side wall of the grain detection bin (12).

3. The portable multi-grain multi-parameter rapid intelligent detection device according to claim 2 is characterized in that: The grain detection bin (12) is provided with a gas sensor (3). The gas sensor (3) is used to detect the freshness of the grain to be detected.

4. The portable multi-grain multi-parameter rapid intelligent detection device according to claim 3 is characterized in that: A weighing platform (19) is provided on the machine body, and a weighing sensor (20) is provided on the weighing platform (19). The weighing sensor (20) is used to detect the weight of the grain to be detected.

5. The portable multi-grain multi-parameter rapid intelligent detection device according to claim 4 is characterized in that: The bottom of the grain detection bin (12) is provided with a bottom plate (15), and a movable baffle (16) is provided on the bottom plate (15) of the grain detection bin (12), and the movable baffle (16) is used to open and close the discharge port of the grain detection bin (12); The discharge port of the grain detection bin (12) is arranged opposite to the weighing platform (19).

6. The portable multi-grain multi-parameter rapid intelligent detection device according to claim 5 is characterized in that: The movable baffle (16) is connected to a baffle control mechanism.

7. The portable multi-grain multi-parameter rapid intelligent detection device according to claim 6 is characterized in that: The baffle control mechanism comprises a stepping motor (21) and a ball screw (22). The stepping motor (21) is fixedly connected to the machine body. The power output shaft of the stepping motor (21) is fixedly connected to the ball screw (22). The movable baffle (16) is fixedly connected to the slider of the ball screw (22).

8. The portable multi-grain multi-parameter rapid intelligent detection device according to claim 7 is characterized in that: It also includes a discharge box (18), wherein the discharge box (18) is arranged on the weighing platform (19); The discharge box (18) is arranged relative to the discharge port of the grain detection bin (12).

9. The portable multi-grain multi-parameter rapid intelligent detection device according to claim 8 is characterized in that: The machine body is provided with a circuit box (10), and the circuit box (10) is provided with a control circuit board. The control circuit board is electrically connected to the capacitive sensor, the temperature sensor (6), the gas sensor (3), the weighing sensor (20) and the stepping motor (21) respectively.

10. The portable multi-grain multi-parameter rapid intelligent detection device according to claim 9 is characterized in that: A display screen (7) is provided on the machine body, and the display screen (7) is electrically connected to the control circuit board.

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