Grain bin material level detection device and harvester

Abstract

The utility model relates to the technical field of agricultural machinery, and discloses a granary material level detection device and a harvester. The granary material level detection device comprises a high-frequency radar material level meter which is arranged in a granary of the harvester and used for obtaining material level information in the granary; and the display unit is arranged in a cab of the harvester and is electrically connected with the high-frequency radar level gage. Due to the fact that the high-frequency radar level gauge usually has high emission frequency and a small beam angle, radar beams emitted by the high-frequency radar level gauge can penetrate through moisture, dust and grain scattered particles in the granary, and the attenuation influence of the interference factors on radar echoes is reduced. And meanwhile, the smaller beam angle can enable the radar beam to point to the grain in the granary more intensively, so that the measurement accuracy can be improved. Furthermore, the high-frequency radar level gage is electrically connected with the display unit, so that a driver can know the storage condition of the granary in time, and the grains are prevented from overflowing out of the granary.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a grain bin level detection device and a combine harvester. Background Art

[0002] In order to avoid grain overflowing from the grain bin during the process of grain purchase, it is usually necessary for the driver to look back at the grain bin to confirm the level information in the grain bin. In this way, not only will the operation efficiency of the combine harvester be affected, but also the labor intensity of the driver will be increased. Therefore, to solve the above problems, a microswitch type full-grain sensor or an ultrasonic radar is usually installed in the grain bin to monitor the height of the grain level in the grain bin.

[0003] However, during the operation of the combine harvester, a large amount of dust will be generated in the grain bin. Therefore, neither the microswitch type full-grain sensor nor the ultrasonic radar can accurately reflect the height of the grain level in the grain bin in the face of a large amount of dust, and thus cannot effectively reduce the labor intensity of the driver and ensure the operation efficiency of the combine harvester. Summary of the Utility Model

[0004] In view of this, the utility model provides a grain bin level detection device and a combine harvester to solve the problem of poor measurement accuracy of the grain bin level detection system in the related art.

[0005] In a first aspect, the utility model provides a grain bin level detection device, including:

[0006] A high-frequency radar level gauge, which is arranged in the grain bin of the combine harvester and is used to obtain the level information in the grain bin;

[0007] A display unit, which is arranged in the cab of the combine harvester and is electrically connected to the high-frequency radar level gauge.

[0008] Beneficial effects: Since the high-frequency radar level gauge usually has a high emission frequency and a small beam angle, the radar beam emitted by the high-frequency radar level gauge can penetrate the moisture, dust and grain sprinkling particles in the grain bin, reducing the attenuation effect of these interference factors on the radar echo. At the same time, the small beam angle can also make the radar beam more concentratedly point to the grain in the grain bin, thereby improving the measurement accuracy. Further, electrically connecting the high-frequency radar level gauge to the display unit can enable the level information of the grain bin to be presented on the display unit in real time. In this way, not only can the driver timely understand the storage status of the grain bin to avoid grain overflowing from the grain bin, but also the labor intensity of the driver can be reduced and the operation efficiency of the combine harvester can be improved.

[0009] In an optional embodiment, the high-frequency radar level gauge is detachably arranged above the preset maximum level in the grain bin.

[0010] Beneficial effects: The high-frequency radar level gauge of the present utility model is detachably arranged in the granary. On the one hand, it can improve the flexibility and convenience of installing the high-frequency radar level gauge; on the other hand, it can improve the convenience of subsequent maintenance and replacement of the high-frequency radar level gauge. In addition, by arranging the high-frequency radar level gauge above the preset maximum level, it can not only enable the high-frequency radar level gauge to more accurately obtain the level information in the granary, but also prevent the grain in the granary from exceeding the preset maximum level, reduce the possibility of mechanical failures or safety accidents, and ensure the safety and continuity of the operation process of the harvester.

[0011] In an alternative embodiment, the granary has a grain inlet, the grain inlet is arranged at the top of the granary or on the side wall of the granary, and the high-frequency radar level gauge is arranged away from the grain inlet.

[0012] Beneficial effects: Since the grain often has a certain speed and impact force when entering the granary from the grain inlet, the present utility model arranges the high-frequency radar level gauge away from the grain inlet, which can reduce the possibility of the high-frequency radar level gauge being hit by the grain, improve the measurement accuracy of the high-frequency radar level gauge, and extend the service life of the high-frequency radar level gauge.

[0013] In an alternative embodiment, the granary level detection device further includes a mounting seat for mounting the high-frequency radar level gauge. The mounting seat is arranged between the opposite side walls of the granary, and the high-frequency radar level gauge is located in the middle area of the mounting seat; or, the mounting seat includes a fixed part and a telescopic part, the telescopic part can telescopically move relative to the fixed part along the length direction of the mounting seat, one of the fixed part and the telescopic part is connected to the side wall of the granary, and the other is connected to the high-frequency radar level gauge, and the high-frequency radar level gauge is arranged away from the side wall of the granary.

[0014] Beneficial effects: The present utility model arranges the high-frequency radar level gauge in the middle area of the mounting seat or away from the side wall of the granary. On the one hand, it can avoid the side wall of the granary from generating interference echoes and ensure the accuracy of the measurement data; on the other hand, it can enable the high-frequency radar level gauge to more evenly receive the radar wave reflection signals from all directions, reduce the measurement errors caused by uneven grain distribution or grain accumulation, and improve the accuracy of the measurement data. In addition, by arranging the high-frequency radar level gauge in the granary through the mounting seat, it can ensure that the high-frequency radar level gauge is firmly and stably installed in the granary, reduce the risk of damage or detachment of the high-frequency radar level gauge due to vibration, and ensure that the high-frequency radar level gauge can work continuously and accurately.

[0015] In an alternative embodiment, a plurality of high-frequency radar level gauges are arranged on the mounting seat, and the plurality of high-frequency radar level gauges are arranged at intervals along the length direction of the mounting seat.

[0016] Beneficial effects: By arranging a plurality of high-frequency radar level gauges on the mounting base and spacing the plurality of high-frequency radar level gauges, on the one hand, the measurement area of the grain bin level detection device can be increased, more comprehensive and detailed grain height information can be obtained, and the measurement accuracy and precision can be improved; on the other hand, since the plurality of high-frequency radar level gauges can all work independently, when a certain high-frequency radar level gauge fails, the remaining high-frequency radar level gauges can still ensure normal working conditions, so that accurate level information can be continuously provided for the driver, ensuring the reliability of the grain bin level detection device.

[0017] In an optional embodiment, the number of the high-frequency radar level gauges and the mounting base is multiple, and the plurality of high-frequency radar level gauges correspond to the mounting base one by one and are spaced above the preset maximum level through the plurality of mounting bases.

[0018] Beneficial effects: By installing a plurality of high-frequency radar level gauges at different positions in the grain bin, the present utility model can achieve all-round monitoring of the grain distribution inside the grain bin, reduce measurement errors caused by local accumulation or vacancy, and greatly improve the measurement accuracy and reliability. Further, by spacing the high-frequency radar level gauges, effective monitoring of the top area of the grain in the grain bin can be realized, avoiding the existence of blind spots. In addition, compared with a single high-frequency radar level gauge, by arranging a plurality of high-frequency radar level gauges, when one or several high-frequency radar level gauges fail, the grain bin level detection device can still ensure normal working conditions, so that accurate level information can be continuously provided for the driver, ensuring the reliability of the grain bin level detection device.

[0019] In an optional embodiment, the high-frequency radar level gauge is arranged on a millimeter-wave radio frequency chip.

[0020] Beneficial effects: By arranging the high-frequency radar level gauge on the millimeter-wave radio frequency chip, the volume and weight of the device can be reduced, making it easier to install and deploy above the grain bin. In addition, by integrating the high-frequency radar level gauge on the millimeter-wave radio frequency chip, a higher signal-to-noise ratio can be achieved, improving the measurement accuracy and reliability. Secondly, due to the characteristics of millimeter waves, the beam angle of the high-frequency radar level gauge can become smaller, so that the energy can become more concentrated, enhancing the echo ability and reducing the measurement blind spot. In this way, the high-frequency radar level gauge can more accurately capture the reflection signal on the surface of the material and obtain more accurate level information.

[0021] In an alternative embodiment, the grain bin level detection device further includes a control unit and an alarm lamp, and the control unit is electrically connected to the high-frequency radar level gauge and the alarm lamp respectively; or, the grain bin level detection device further includes a control unit and a buzzer, and the control unit is electrically connected to the high-frequency radar level gauge and the buzzer respectively.

[0022] Advantageous effects: In the present utility model, the control unit is electrically connected to the high-frequency radar level gauge and the alarm lamp, so that when the height of the grain in the grain bin reaches the preset maximum level, an alarm reminder signal can be sent to the driver in a timely manner, avoiding potential risks caused by human negligence or failure to detect the abnormal level in time. In addition, after the control unit is electrically connected to the high-frequency radar level gauge and the alarm lamp, the driver does not need to frequently turn back to check the height of the grain in the grain bin. In this way, not only can the labor intensity of the driver be reduced, but also the accuracy and reliability of level detection can be greatly improved. Similarly, connecting the control unit to the high-frequency radar level gauge and the buzzer has the same effects as above, which will not be elaborated here.

[0023] In an alternative embodiment, the display unit includes a display screen and control buttons electrically connected to the display screen.

[0024] Advantageous effects: By arranging the display screen in the cab and electrically connecting it to the high-frequency radar level gauge, the present utility model can not only enable the driver to timely understand the storage status of the grain bin, avoid grain overflowing from the grain bin, but also reduce the labor intensity of the driver and improve the operation efficiency of the combine harvester. In addition, by setting the control buttons, the driver can flexibly adjust the alarm height on the display screen according to the operation requirements, improving the adaptability of the combine harvester.

[0025] In a second aspect, the present utility model further provides a combine harvester, including:

[0026] A cab;

[0027] A grain bin located on one side of the cab;

[0028] The above-mentioned grain bin level detection device, the high-frequency radar level gauge is arranged in the grain bin; the display unit is arranged in the cab and electrically connected to the high-frequency radar level gauge.

[0029] Advantageous effects: By arranging the above-mentioned grain bin level detection device on the combine harvester, the driver can understand the level situation in the grain bin in real time, and then can adjust the running state of the combine harvester more accurately, avoiding mechanical failures or safety accidents caused by overloading of the grain bin, ensuring the safety and continuity of the operation process. Description of the Drawings

[0030] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 It is a schematic structural diagram of a harvester according to an embodiment of the present invention;

[0032] Figure 2 For Figure 1 It is a schematic structural diagram of the high-frequency radar level gauge shown;

[0033] Figure 3 It is a connection relationship diagram of a grain bin level detection device according to an embodiment of the present invention;

[0034] Figure 4 It is a connection relationship diagram between the display screen and the control buttons in an embodiment of the present invention.

[0035] Explanation of reference numerals:

[0036] 1. High-frequency radar level gauge; 2. Display unit; 201. Display screen; 202. Control button; 3. Mounting base; 4. Control unit; 5. Alarm lamp; 6. Buzzer; 7. Cab; 8. Grain bin; 801. Grain inlet; 802. Grain outlet. Specific embodiments

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0038] Regarding the problem of poor measurement accuracy in the grain bin level detection system in the related art, the present invention provides a grain bin level detection device and a harvester.

[0039] The following will describe the embodiments of the present invention in conjunction with Figures 1 to 4 , the embodiments of the present invention are described.

[0040] According to an embodiment of the present invention, on the one hand, as Figures 1 to 4 shown, a grain bin level detection device is provided, including: a high-frequency radar level gauge 1 and a display unit 2.

[0041] Specifically, the high-frequency radar level gauge 1 is disposed in the grain bin 8 of the harvester for obtaining the level information in the grain bin 8; the display unit 2 is disposed in the cab 7 of the harvester and is electrically connected to the high-frequency radar level gauge 1.

[0042] Since the high-frequency radar level gauge 1 usually has a relatively high transmission frequency and a small beam angle, the radar beam emitted by the high-frequency radar level gauge 1 can penetrate the moisture, dust and grain-spilling particles in the grain bin 8, reducing the attenuation effect of these interference factors on the radar echo. At the same time, the small beam angle can also make the radar beam more concentratedly directed at the grain in the grain bin 8, thereby improving the measurement accuracy. Further, electrically connecting the high-frequency radar level gauge 1 to the display unit 2 can enable the level information of the grain bin 8 to be presented on the display unit 2 in real time. In this way, not only can the driver timely understand the storage status of the grain bin 8 to avoid grain overflowing from the grain bin 8, but also the labor intensity of the driver can be reduced and the operation efficiency of the harvester can be improved.

[0043] It can be understood that the high-frequency radar level gauge 1 can not only continuously emit radar beams but also continuously receive radar echoes. Therefore, compared with the micro-switch type full-grain sensor in the related art, by disposing the high-frequency radar level gauge 1 in the grain bin 8, continuous monitoring of the level of the grain bin 8 of the harvester can be realized.

[0044] It should be noted that in this embodiment, the level information refers to the height information of the grain in the grain bin 8 within the grain bin 8.

[0045] It should be additionally noted that the electrical connection in this embodiment can be a wireless signal connection or a connection through a signal transmission line. Exemplarily, in a specific embodiment, the high-frequency radar level gauge 1 is connected to the display unit 2 through a CAN bus (Controller Area Network).

[0046] According to an embodiment of the present invention, the high-frequency radar level gauge 1 is detachably disposed above the preset maximum level in the grain bin 8. The embodiment of the present invention detachably disposes the high-frequency radar level gauge 1 in the grain bin 8. On the one hand, it can improve the flexibility and convenience of installing the high-frequency radar level gauge 1; on the other hand, it can improve the convenience of subsequent maintenance and replacement of the high-frequency radar level gauge 1. In addition, disposing the high-frequency radar level gauge 1 above the preset maximum level can not only enable the high-frequency radar level gauge 1 to more accurately obtain the level information in the grain bin 8, but also avoid the grain in the grain bin 8 exceeding the preset maximum level, reducing the possibility of mechanical failures or safety accidents, and ensuring the safety and continuity of the operation process of the harvester.

[0047] For convenience of description,Figure 1 The relative positional relationship of the structures on the grain bin 8 is described in the indicated direction.

[0048] According to an embodiment of the present invention, as Figure 1 shown, the grain bin 8 has a grain inlet 801, and the grain inlet 801 is provided on the top of the grain bin 8 or on the side wall of the grain bin 8. The high-frequency radar level gauge 1 is arranged away from the grain inlet 801. It can be understood that when the grain enters the grain bin 8 from the grain inlet 801, it often has a certain speed and impact force. Therefore, in the present invention, the high-frequency radar level gauge 1 is arranged away from the grain inlet 801, which can reduce the possibility of the high-frequency radar level gauge 1 being hit by the grain, improve the measurement accuracy of the high-frequency radar level gauge 1, and extend the service life of the high-frequency radar level gauge 1.

[0049] In addition, the grain bin 8 also has a grain outlet 802, and the grain outlet 802 is provided on the bottom of the grain bin 8 or on the side wall of the grain bin 8. Exemplarily, in a specific embodiment, both the grain inlet 801 and the grain outlet 802 are provided on the side wall of the grain bin 8.

[0050] According to an embodiment of the present invention, as Figure 1 shown, the grain bin level detection device further includes a mounting seat 3 for mounting the high-frequency radar level gauge 1. The mounting seat 3 is arranged between the opposite side walls of the grain bin 8, and the high-frequency radar level gauge 1 is located in the middle area of the mounting seat 3; or, the mounting seat 3 includes a fixed part and a telescopic part, and the telescopic part can telescopically move relative to the fixed part along the length direction of the mounting seat 3. One of the fixed part and the telescopic part is connected to the side wall of the grain bin 8, and the other is connected to the high-frequency radar level gauge 1, and the high-frequency radar level gauge 1 is arranged away from the side wall of the grain bin 8. In the embodiment of the present invention, the high-frequency radar level gauge 1 is arranged in the middle area of the mounting seat 3 or away from the side wall of the grain bin 8. On the one hand, it can avoid the interference echo generated by the side wall of the grain bin 8 and ensure the accuracy of the measurement data; on the other hand, it can make the high-frequency radar level gauge 1 receive the radar wave reflection signals from all directions more evenly, reduce the measurement error caused by uneven grain distribution or grain accumulation, and improve the accuracy of the measurement data. In addition, by arranging the high-frequency radar level gauge 1 in the grain bin 8 through the mounting seat 3, it can ensure that the high-frequency radar level gauge 1 is firmly and stably installed in the grain bin 8, reduce the risk of damage or detachment of the high-frequency radar level gauge 1 due to vibration, and ensure that the high-frequency radar level gauge 1 can work continuously and accurately.

[0051] According to an embodiment of the present utility model, a plurality of high-frequency radar level gauges 1 are provided on the mounting base 3, and the plurality of high-frequency radar level gauges 1 are arranged at intervals along the length direction of the mounting base 3. In the embodiment of the present utility model, by providing a plurality of high-frequency radar level gauges 1 on the mounting base 3 and arranging the plurality of high-frequency radar level gauges 1 at intervals, on the one hand, the measurement area of the grain bin level detection device can be increased, and more comprehensive and detailed grain height information can be obtained, improving the measurement accuracy and precision; on the other hand, since the plurality of high-frequency radar level gauges 1 can all work independently, when a certain high-frequency radar level gauge 1 fails, the remaining high-frequency radar level gauges 1 can still ensure normal working conditions, so as to continuously provide accurate level information for the driver and ensure the reliability of the grain bin level detection device.

[0052] According to an embodiment of the present utility model, the number of the high-frequency radar level gauges 1 and the mounting bases 3 is multiple, and the plurality of high-frequency radar level gauges 1 correspond to the mounting bases 3 one by one and are arranged at intervals above the preset maximum level through the plurality of mounting bases 3. In the embodiment of the present utility model, by installing a plurality of high-frequency radar level gauges 1 at different positions of the grain bin 8, the omnidirectional monitoring of the internal grain distribution of the grain bin 8 can be realized, reducing the measurement error caused by local accumulation or vacancy, and greatly improving the measurement accuracy and reliability. Further, by arranging the high-frequency radar level gauges 1 at intervals, the effective monitoring of the top area of the grain in the grain bin 8 can be realized, avoiding the existence of blind spots. In addition, compared with a single high-frequency radar level gauge 1, by providing a plurality of high-frequency radar level gauges 1, when one or several high-frequency radar level gauges 1 fail, the grain bin level detection device can still ensure normal working conditions, so as to continuously provide accurate level information for the driver and ensure the reliability of the grain bin level detection device.

[0053] According to an embodiment of the present utility model, the high-frequency radar level gauge 1 is arranged on the millimeter-wave radio frequency chip. In the embodiment of the present utility model, by arranging the high-frequency radar level gauge 1 on the millimeter-wave radio frequency chip, the volume and weight of the device can be reduced, making it easier to install and deploy above the grain bin 8. In addition, by integrating the high-frequency radar level gauge 1 on the millimeter-wave radio frequency chip, a higher signal-to-noise ratio can be achieved, improving the measurement accuracy and reliability. Secondly, due to the characteristics of millimeter waves, the beam angle of the high-frequency radar level gauge 1 can become smaller, so that the energy can become more concentrated, enhancing the echo ability and reducing the measurement blind spot. In this way, the high-frequency radar level gauge 1 can more accurately capture the reflection signal on the surface of the material and obtain more accurate level information.

[0054] According to an embodiment of the present utility model, as Figure 3 and Figure 4As shown, it further includes a control unit 4 and an alarm lamp 5. The control unit 4 is electrically connected to the high-frequency radar level gauge 1 and the alarm lamp 5 respectively. In the embodiment of the present invention, the control unit 4 is electrically connected to the high-frequency radar level gauge 1 and the alarm lamp 5, which can send an alarm reminder signal to the driver in time when the grain height in the granary 8 reaches the preset maximum level, avoiding potential risks caused by human negligence or failure to detect the level abnormality in time. In addition, after the control unit 4 is electrically connected to the high-frequency radar level gauge 1 and the alarm lamp 5, the driver does not need to frequently turn back to check the grain height in the granary 8. In this way, not only can the labor intensity of the driver be reduced, but also the accuracy and reliability of level detection can be greatly improved.

[0055] According to an embodiment of the present invention, as Figure 3 and Figure 4 shown, it further includes a control unit 4 and a buzzer 6. The control unit 4 is electrically connected to the high-frequency radar level gauge 1 and the buzzer 6 respectively. In the embodiment of the present invention, the control unit 4 is electrically connected to the high-frequency radar level gauge 1 and the buzzer 6, which can send an alarm reminder signal to the driver in time when the grain height in the granary 8 reaches the preset maximum level, avoiding potential risks caused by human negligence or failure to detect the level abnormality in time. In addition, after the control unit 4 is electrically connected to the high-frequency radar level gauge 1 and the buzzer 6, the driver does not need to frequently turn back to check the grain height in the granary 8. In this way, not only can the labor intensity of the driver be reduced, but also the accuracy and reliability of level detection can be greatly improved.

[0056] According to an embodiment of the present invention, the display unit 2 includes a display screen 201 and control buttons 202 electrically connected to the display screen 201. The display screen 201 is adapted to be set in the cab 7 and electrically connected to the high-frequency radar level gauge 1. In the embodiment of the present invention, by setting the display screen 201 in the cab 7 and electrically connecting it to the high-frequency radar level gauge 1, not only can the driver timely understand the storage status of the granary 8 to avoid grain overflowing from the granary 8, but also the labor intensity of the driver can be reduced and the operation efficiency of the harvester can be improved. In addition, by setting the control buttons 202, the driver can flexibly adjust the preset maximum level of the granary on the display screen 201 according to the operation requirements, improving the adaptability of the harvester. In addition, in order to further ensure the alarm reminder effect, an alarm pop-up window can be automatically popped up on the display screen 201 after the level height is greater than the preset maximum level of the display screen 201, ensuring that the driver can notice in the first time that the grain height in the granary 8 has exceeded the preset maximum level.

[0057] It can be understood that, in order to reduce the volume of the grain bin level detection device, the control unit 4 and the display screen 201 can be integrated, so that the display screen 201 can not only read the original data of the high-frequency radar level gauge 1, perform algorithm processing, and complete level calculation, but also display the level information of the grain bin 8 in real time in two ways: percentage or progress bar.

[0058] According to an embodiment of the present invention, on the other hand, a harvester is also provided, including: a cab 7, a grain bin 8, and the above-mentioned grain bin level detection device. Specifically, the grain bin 8 is located on one side of the cab 7; the high-frequency radar level gauge 1 is arranged in the grain bin 8; the display unit 2 is arranged in the cab 7 and is electrically connected to the high-frequency radar level gauge 1. By arranging the above-mentioned grain bin level detection device on the harvester, the embodiment of the present invention enables the driver to understand the level situation in the grain bin 8 in real time, and further enables the driver to more accurately adjust the operating state of the harvester, avoiding mechanical failures or safety accidents caused by overloading of the grain bin 8, and ensuring the safety and continuity of the operation process.

[0059] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A granary material level detection device, characterized in that: include: A high-frequency radar material level meter (1) is arranged in a grain bin (8) of a harvester and is used to obtain material level information in the grain bin (8); A display unit (2) is arranged in a cab (7) of the harvester and is electrically connected to the high-frequency radar level meter (1); The invention also comprises a mounting seat (3) for mounting the high-frequency radar level meter (1), the mounting seat (3) being arranged between oppositely arranged side walls of the granary (8), and the high-frequency radar level meter (1) being located in the middle area of ​​the mounting seat (3); or the mounting seat (3) comprises a fixed portion and a telescopic portion, the telescopic portion being capable of telescoping relative to the fixed portion along the length direction of the mounting seat (3), one of the fixed portion and the telescopic portion being connected to the side wall of the granary (8), and the other being connected to the high-frequency radar level meter (1), and the high-frequency radar level meter (1) being arranged away from the side wall of the granary (8).

2. The granary level detection device according to claim 1, characterized in that: The high-frequency radar material level meter (1) is detachably arranged in the granary (8) and is located above a preset maximum material level.

3. The granary level detection device according to claim 2, characterized in that: The granary (8) has a grain inlet (801), and the grain inlet (801) is arranged on the top of the granary (8) or on the side wall of the granary (8), and the high-frequency radar level meter (1) is arranged away from the grain inlet (801).

4. The granary level detection device according to claim 1, characterized in that: A plurality of the high-frequency radar level meters (1) are arranged on the mounting seat (3), and the plurality of the high-frequency radar level meters (1) are arranged at intervals along the length direction of the mounting seat (3).

5. The granary level detection device according to claim 2, characterized in that: The number of the high-frequency radar level meter (1) and the mounting seat (3) is plural, and the plural high-frequency radar level meters (1) correspond to the mounting seats (3) one by one and are arranged above the preset maximum material level at intervals through the plural mounting seats (3).

6. The granary level detection device according to any one of claims 1 to 5, characterized in that: The high-frequency radar level meter (1) is arranged on a millimeter wave radio frequency chip.

7. The granary material level detection device according to any one of claims 1 to 5, characterized in that: The device further comprises a control unit (4) and an alarm light (5), wherein the control unit (4) is electrically connected to the high-frequency radar level meter (1) and the alarm light (5), respectively; or, the device further comprises a control unit (4) and a buzzer (6), wherein the control unit (4) is electrically connected to the high-frequency radar level meter (1) and the buzzer (6), respectively.

8. The granary material level detection device according to any one of claims 1 to 5, characterized in that: The display unit (2) comprises a display screen (201) and a control button (202) electrically connected to the display screen (201).

9. A harvester, characterized in that: include: Cab (7); A granary (8), located on one side of the cab (7); The grain silo level detection device according to any one of claims 1 to 8, wherein the high-frequency radar level meter (1) is arranged in the grain silo (8); and the display unit (2) is arranged in the cab (7) and is electrically connected to the high-frequency radar level meter (1).

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