A potato planter and its intelligent seeding device

Abstract

A potato planter and its intelligent seed metering device are disclosed. The potato planter includes a frame, ground wheels mounted on the frame, and an intelligent seed metering device. The intelligent seed metering device includes: a seed metering support mounted on the frame of the potato planter; a seed metering device mounted on the seed metering support, including a spiral friction seed-collecting mechanism and a seed metering disc mechanism, the two ends of which are respectively connected to the seed box of the potato planter and the seed metering disc mechanism; a detection device including a ground wheel speed detector and an empty disc detector, the ground wheel speed detector being mounted on the frame corresponding to the ground wheels of the potato planter, and the empty disc detector being mounted on the seed metering disc mechanism; and a control device mounted on the frame and connected to the seed metering device and the detection device, the control device adjusting the working speed of the spiral friction seed-collecting mechanism and the seed metering disc mechanism in real time according to the ground wheel speed and empty disc information, so as to control the actual planting spacing to a set plant spacing.

Description

Technical Field

[0001] The invention relates to an agricultural seeder, in particular to a potato seeder and a combined intelligent seed metering device thereof. Background Art

[0002] In the development process of potato planters, there have been various seed-seeding device structures that have been widely used within a certain range, including: spoon-disc seed-seeder, needle-piercing seed-seeder, air-suction seed-seeder, belt-spoon seed-seeder, chain-spoon seed-seeder and conveyor-belt seed-seeder.

[0003] In the 1990s, needle-piercing seed meters were widely used. The biggest advantage of this type of seed meter is that it is highly adaptable to the shape and size variations of seed potatoes. However, due to its working method of piercing seeds, it is easy to cross-infect seed potatoes, affecting the quality of harvested tubers. Due to the working form, the needle size is strict, easy to damage and deform, and has low working reliability. The air-suction seed meter uses high negative pressure to absorb seed potatoes. Its seed filling success rate is affected by the shape of the potato. It is only suitable for sowing whole potatoes, not for sowing cut potatoes, and is only suitable for supporting operations with high-horsepower tractors, not for supporting operations with small and medium-sized tractors.

[0004] The spoon-type seeding device includes two types: vertical spoon-type and inclined spoon-type. According to different driving modes, it can be divided into chain spoon type and belt spoon type. The belt spoon type seeding mechanism needs to be tensioned, and the seeding power is provided by the friction between the pulley and the belt. It has a large power demand and is easy to slip, which can easily affect the seeding accuracy. It is mostly used in large and medium-sized models. The belt spoon type seeding device is the most widely used, with the advantages of high reliability, low cost, and adjustable spacing. However, there are problems such as missed seeding, reseeding, and ground wheel slippage, and its seeding performance decreases with the increase of seeding speed. The belt spoon type seeding device is represented by the GL series potato planter produced by Grimme Company in Germany. It integrates electronic monitoring and control, electromechanical and hydraulic joint drive, and has reliable performance; the chain spoon type seeding device has a small power demand and is mostly used in small machines. It is affected by the polygonal effect of chain transmission and has a self-vibration effect. Compared with the belt spoon type seeding device, it has a high empty seed rate and a low reseed rate. In production, the method of artificial assisted reseeding is often used to improve the sowing performance. Manual reseeding can effectively reduce the occurrence of missed seeding, but it is labor-intensive, labor-intensive, and prone to injuries, which limits the improvement of the planter's operating efficiency. In order to improve the performance of the chain-spoon potato planter, some researchers have optimized the seeding speed, the number of seeds in the seed box, and added a vibration device to improve the seeding performance of the seeding device, and have achieved remarkable results. The spoon-type seeding device is the mainstream structure widely used in potato planters at home and abroad.

[0005] The conveyor-belt seeding device has high operating efficiency, no missed planting, no reseeding, and no seed damage. It has been widely used, but the seeding spacing is affected by the size of the seed potatoes, and the accuracy of the plant spacing cannot be guaranteed. Further improvements are needed in the principle of seeding. In the belt-type high-speed seeding device, the seed potatoes are adjusted by the conveyor belt and finally arranged in a column on the feeding belt. The determining factors of the sowing spacing are the size of the potato, the machine feed speed and the seeding belt speed.

[0006] The chain spoon seed metering device of the prior art, due to the blindness of the spoon seeding method, and the improvement of seeding performance is the result of the joint action of multiple variables, adopts the method of optimizing and analyzing the motion parameters of the device structure, although it can partially improve its performance, but it has great limitations; there is also the optimization of the reseeding system, but reseeding after missing seeds is ultimately a remedial measure, although it reduces the missed seeding rate to a certain extent, it cannot solve the problem of the inefficiency of the spoon seed metering device. In short, the prior art cannot fundamentally solve the problem of missed seeds and low efficiency of potato planters. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a potato planter and a combined intelligent seeding device thereof in view of the above-mentioned defects of the prior art, which adopts sensing technology and intelligent control technology to control seeding so as to realize high-speed and precise seeding of the potato planter.

[0008] In order to achieve the above object, the present invention provides an intelligent seed metering device for a potato planter, which comprises:

[0009] A seeding support, mounted on the frame of the potato planter;

[0010] A seeding device, installed on the seeding bracket, comprises a spiral friction seeding mechanism and a seeding disc mechanism, wherein two ends of the spiral friction seeding mechanism are respectively connected to the seed box of the potato planter and the seeding disc mechanism;

[0011] a detection device, comprising a ground wheel speed detector and an empty disc detector, wherein the ground wheel speed detector is mounted on the frame corresponding to the ground wheel of the potato planter, and the empty disc detector is mounted on the seed disc mechanism; and

[0012] A control device is installed on the frame and is connected to the seeding device and the detection device respectively. The control device adjusts the working speed of the spiral friction seed taking mechanism and the seeding disk mechanism in real time according to the ground wheel speed obtained by the ground wheel speed detector and the empty disk information uploaded by the empty disk detector, so as to control the actual sowing spacing to the set plant spacing.

[0013] The above-mentioned intelligent seed metering device, wherein the seed metering disc mechanism comprises:

[0014] A seeding disc is mounted on the seeding bracket, and a plurality of seeding holes for seed potatoes to pass through are evenly distributed on the seeding disc, so as to realize the precise seeding of a single seed potato;

[0015] A seeding tube is arranged below the seeding plate and is adapted to the seeding hole;

[0016] A seeding motor is installed on the seeding bracket and connected to the seeding disc, and the control device is connected to the seeding motor; and

[0017] A seed guide tube is arranged above the seeding disc and is adapted to the seeding hole, and is respectively connected to the seeding disc and the end of the spiral friction seed taking mechanism.

[0018] The above-mentioned intelligent seed metering device, wherein the spiral friction seed taking mechanism comprises:

[0019] A spiral auger is installed on the seeding support and is arranged corresponding to the feeding inlet of the seed box and the seeding tray to separate the seed potatoes into single grains; and

[0020] The auger motor is connected to the spiral auger and the control device respectively. The control device adjusts the rotation speed of the seeding motor and the auger motor in real time according to the distribution of the seed potatoes in the seeding tray to control the actual sowing spacing to the set plant spacing.

[0021] The above-mentioned intelligent seed metering device, wherein the ground wheel speed detector comprises:

[0022] A ground wheel sensor bracket is mounted on the frame;

[0023] A plurality of speed measuring magnetic sheets are evenly installed on the ground wheel;

[0024] A Hall speed sensor is mounted on the ground wheel sensor bracket corresponding to the speed measuring magnetic sheet, and is used to collect a pulse signal when the ground wheel rotates and drives the speed measuring magnetic sheet to pass; and

[0025] The speed signal acquisition board is connected to the pulse output end of the Hall speed sensor and the control device respectively, and is used to calculate the rotation speed of the ground wheel according to the frequency of the pulse signal sent by the Hall speed sensor, and transmit the rotation speed information of the ground wheel to the control device.

[0026] The above-mentioned intelligent seed metering device, wherein the empty tray detector comprises:

[0027] An empty tray sensor bracket is installed on the seed tray mechanism;

[0028] an empty tray photoelectric sensor, mounted on the empty tray sensor bracket, with a detection surface of the empty tray photoelectric sensor facing the seed tray; and

[0029] The empty disk information acquisition board is connected to the pulse output end of the empty disk photoelectric sensor and the control device respectively. The empty disk information acquisition board determines whether there is an empty disk on the seeding disk according to the pulse sequence emitted by the empty disk photoelectric sensor, and generates empty disk information corresponding to the empty disk and transmits it to the control device.

[0030] In the above-mentioned intelligent seed metering device, the auger motor and the seed metering motor are both servo motors.

[0031] The above-mentioned intelligent seed metering device, wherein the control device comprises:

[0032] An intelligent controller is connected to the speed measurement signal acquisition board and the empty disk information acquisition board respectively;

[0033] A first servo driver is connected to the intelligent controller and the auger motor respectively; and

[0034] A second servo driver is connected to the intelligent controller and the seeding motor respectively;

[0035] Among them, the intelligent controller makes a decision after receiving the rotation speed information of the ground wheel transmitted by the speed signal acquisition board and the empty plate information transmitted by the empty plate information acquisition board, and sends instructions to the first servo driver and / or the second servo driver respectively, so as to control the speed of the auger motor and / or the seeding motor to be controlled by the first servo driver and / or the second servo driver accordingly, so as to achieve the actual sowing spacing as the set plant spacing.

[0036] In order to better achieve the above-mentioned purpose, the present invention also provides a potato planter, comprising a frame, a ground wheel and an intelligent seed metering device installed on the frame, wherein the intelligent seed metering device is the above-mentioned intelligent seed metering device.

[0037] The above-mentioned potato planter, wherein the frame is also provided with a control box, and the control device is installed in the control box.

[0038] In the above-mentioned potato planter, the speed signal acquisition board and the empty tray information acquisition board are both installed in the control box.

[0039] The technical effects of the present invention are:

[0040] Compared with the prior art, the invention has a reasonable layout and can fundamentally solve the problems of high seed leakage rate, low efficiency and poor uniformity of plant spacing in the potato sowing process, thereby realizing high-speed and precise sowing of the potato sowing machine.

[0041] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a schematic structural diagram of a potato planter according to an embodiment of the present invention;

[0043] Figure 2 for Figure 1 Left view of

[0044] Figure 3 This is a schematic diagram of the structure of an intelligent seed metering device according to an embodiment of the present invention;

[0045] Figure 4 A schematic diagram of the structure of a ground wheel speed detector according to an embodiment of the present invention;

[0046] Figure 5 This is a schematic diagram of the structure of an empty tray detector according to an embodiment of the present invention;

[0047] Figure 6 It is a schematic diagram of the working principle of the intelligent seed metering device of the present invention.

[0048] Among them, the reference numerals

[0049] 1 Rack

[0050] 2 Ground Wheels

[0051] 3 Intelligent seed meter

[0052] 31 Seed rack

[0053] 32 Spiral friction seed taking mechanism

[0054] 321 Spiral auger

[0055] 322 Auger Motor

[0056] 33 Seed plate mechanism

[0057] 331 Seed Tray

[0058] 332 Seed hole

[0059] 333 Seed Motor

[0060] 334 Seed Guide

[0061] 335 Seed Tube

[0062] 336 Installing the tablet

[0063] 34 Ground wheel speed detector

[0064] 341 Ground wheel sensor bracket

[0065] 342 Speed ​​measuring magnetic disc

[0066] 343 Hall Speed ​​Sensor

[0067] 344 Speed ​​measurement signal acquisition board

[0068] 35 Empty plate detector

[0069] 351 Empty Pan Sensor Bracket

[0070] 352 Empty plate photoelectric sensor

[0071] 353 Empty disk information collection board

[0072] 36 Control Device

[0073] 361 Intelligent Controller

[0074] 362 First Servo Drive

[0075] 363 Second Servo Drive

[0076] 4 Control Box

[0077] 5 types of boxes

[0078] 51 Feeding Entrance

[0079] 52 Seed guard DETAILED DESCRIPTION

[0080] The structural principle and working principle of the present invention are described in detail below in conjunction with the accompanying drawings:

[0081] See also Figure 1 and Figure 2 , Figure 1 FIG. 1 is a schematic structural diagram of a potato planter according to an embodiment of the present invention. Figure 2 for Figure 1 The potato planter of the present invention comprises a frame 1, a ground wheel 2, a seed box 5 and an intelligent seed metering device 3 mounted on the frame 1. The frame 1 is used to install and support various components and realize the connection between the whole machine and the rear three-point suspension of the tractor. The intelligent seed metering device 3 is correspondingly mounted on one side of the seed box 5, and a seed taking guard plate 52 can also be provided on one side of the intelligent seed metering device 3.

[0082] See also Figure 3 , Figure 3The structure diagram of the intelligent seed metering device of one embodiment of the present invention. In this embodiment, the intelligent seed metering device 3 includes: a seeding bracket 31, which is installed on the frame 1 of the potato planter, and is used to realize the installation and fixation of the intelligent seed metering device 3 on the potato planter and the connection and support of other seeding components; a seeding device, which is installed on the seeding bracket 31, includes a spiral friction seeding mechanism 32 and a seeding disc mechanism 33, and the spiral friction seeding mechanism 32 is used to realize the single-grain separation of seed potatoes, and its two ends are respectively connected to the feeding port 51 of the seed box 5 of the potato planter and the seeding disc mechanism 33, and the seeding disc mechanism 33 is used to uniformly discharge the seed potatoes from the seeding tube 335 under the action of the intelligent controller 361; A detection device, including a ground wheel speed detector 34 and an empty disk detector 35, wherein the ground wheel speed detector 34 is installed on the frame 1 corresponding to the ground wheel 2 of the potato planter, and the empty disk detector 35 is installed on the seeding disk mechanism 33; and a control device 36, which is installed on the frame 1 and is respectively connected to the seeding device and the detection device, and the control device 36 adjusts the working speed of the spiral friction seed taking mechanism 32 and the seeding disk mechanism 33 in real time according to the ground wheel speed obtained by the ground wheel speed detector 34 and the empty disk information uploaded by the empty disk detector 35, so as to control the actual sowing spacing to the set plant spacing.

[0083] The seeding disc mechanism 33 comprises: a seeding disc 331, mounted on the seeding bracket 31, on which a plurality of seeding holes 332 for seed potatoes to pass are evenly distributed, so as to realize the precise seeding of single seed potatoes; a seeding tube 335, arranged below the seeding disc 331 and adapted to the seeding holes 332; a seeding motor 333, mounted on the seeding bracket 31 and connected to the seeding disc 331, for driving the seeding disc 331 to rotate to complete seeding, the control device 36 is connected to the seeding motor 333 and controls the rotation speed of the seeding motor 333; and a seed guide tube 334, arranged above the seeding disc 331 and adapted to the seeding holes 332, and respectively connected to the seeding disc 331 and the end of the spiral friction seed taking mechanism 32. The spiral friction seed-taking mechanism 32 includes: a spiral agitator 321, which is installed on the seed-dispensing bracket 31 and is arranged corresponding to the feeding port 51 of the seed box 5 and the seed-dispensing disk 331, so as to realize the single-grain separation of seed potatoes; and an agitator motor 322, which is respectively connected to the spiral agitator 321 and the control device 36. The control device 36 adjusts the rotation speed of the seed-dispensing motor 333 and the agitator motor 322 in real time according to the distribution of the seed potatoes in the seed-dispensing disk 331, so as to control the actual sowing spacing to be the set plant spacing.

[0084] See also Figure 4 , Figure 4The figure is a schematic diagram of the structure of a ground wheel speed detector according to an embodiment of the present invention. The ground wheel speed detector 34 of this embodiment can detect the ground wheel speed of the seeder in real time during the sowing operation to obtain the speed information of the ground wheel 2. The ground wheel speed detector 34 is fixed on the seeder frame 1 via a ground wheel sensor bracket 341, and includes: a ground wheel sensor bracket 341, mounted on the frame 1; a plurality of speed measuring magnetic sheets 342, evenly mounted on the ground wheel 2, for example, 6 speed measuring magnetic sheets 342 can be evenly arranged in the circumferential direction of the axle of the ground wheel 2 of the seeder; a Hall speed sensor 343, mounted on the ground wheel sensor bracket 341 corresponding to the speed measuring magnetic sheet 342, aligned with the speed measuring magnetic sheet 342, for collecting the pulse signal when the ground wheel 2 rotates and drives the speed measuring magnetic sheet 342 to pass; and a speed signal acquisition board 344, respectively connected to the pulse output end of the Hall speed sensor 343 and the control device 36, for calculating the speed of the ground wheel 2 according to the frequency of the pulse signal emitted by the Hall speed sensor 343, and transmitting the speed information of the ground wheel 2 to the control device 36. When the ground wheel 2 rotates, the Hall speed sensor 343 collects the pulse signal when the speed magnetic plate 342 passes by. The pulse output end of the Hall speed sensor 343 is connected to the speed signal acquisition board 344. The speed signal acquisition board 344 calculates the rotation speed of the ground wheel 2 according to the frequency of the pulse signal emitted by the Hall speed sensor 343, and transmits the rotation speed information of the ground wheel 2 to the intelligent controller 361.

[0085] See also Figure 5 , Figure 5Schematic diagram of the structure of an empty tray detector according to an embodiment of the present invention. The empty tray detector 35 of this embodiment can detect the distribution information of seed potatoes in the seed tray 331 in real time to obtain the information of missed seeds. The empty tray detector 35 includes: an empty tray sensor bracket 351, which is installed on the seed tray mechanism 33; an empty tray photoelectric sensor 352, which is installed on the empty tray sensor bracket 351, and the detection surface of the empty tray photoelectric sensor 352 faces the seed tray 331. As shown in the figure, the empty tray photoelectric sensor 352 is fixed on the mounting plate 336 of the seed tube 335 by the empty tray sensor bracket 351, so that the detection surface of the empty tray photoelectric sensor 352 faces the seed tray 331; and an empty tray information collection board 353, which is respectively connected to the pulse output end of the empty tray photoelectric sensor 352 and the control device 36. The empty tray information collection board 353 determines whether there is an empty tray in the seed hole 332 of the seed tray 331 according to the pulse sequence emitted by the empty tray photoelectric sensor 352, and generates empty tray information corresponding to the empty tray of the seed hole 332 and transmits it to the control device 36. During the seeding process, the seed disk 331 rotates, and the empty disk photoelectric sensor 352 generates a pulse sequence due to the obstruction of the seed disk 331 and the seed potatoes in the seeding hole 332. The pulse output end of the empty disk photoelectric sensor 352 is connected to the empty disk information collection board 353. The empty disk information collection board 353 determines whether there is an empty disk based on the pulse sequence emitted by the empty disk photoelectric sensor 352, and transmits the empty disk information to the intelligent controller 361.

[0086] The control device 36 is used to adjust the motor speed of the spiral auger 321 and the seed disk 331 in real time according to the ground wheel speed and the empty disk information. The control device 36 includes: an intelligent controller 361, which is connected to the speed signal acquisition board 344 of the ground wheel speed detector 34 and the empty disk information acquisition board 353 of the empty disk detector 35 respectively. The intelligent controller 361 collects the information recorded by the empty disk detector 35 and the ground wheel speed detector 34 at high frequency, and adjusts the speed of the spiral auger 321 and the seed disk 331 in real time according to a pre-set algorithm, so as to finally achieve the purpose of uniform actual sowing spacing; a first servo driver 362, which is connected to the intelligent controller 361 and the auger motor 322 respectively; and a second servo driver 363, respectively connected to the intelligent controller 361 and the seeding motor 333; wherein the intelligent controller 361 makes a decision after receiving the speed information of the ground wheel 2 transmitted by the speed measurement signal acquisition board 344 and the empty disk information transmitted by the empty disk information acquisition board 353, and issues instructions to the first and / or second servo drivers 362 / 363 respectively to control the speed of the auger motor 322 and the seeding motor 333 to achieve the actual sowing spacing as the set plant spacing. The auger motor 322 and the seeding motor 333 in this embodiment are both servo motors. In addition, a control box 4 may also be provided on the frame 1, and the control device 36 may preferably be installed in the control box 4. The speed measurement signal acquisition board 344 and the empty disk information acquisition board 353 may also be installed in the control box 4, respectively.

[0087] See also Figure 6 , Figure 6 The figure is a schematic diagram of the working principle of the intelligent seeding device of the present invention. When working, the potato planter moves under the traction of the tractor, and the Hall speed sensor 343 collects the speed signal of the ground wheel 2 in real time, and the signal is transmitted to the intelligent controller 361 through the speed signal acquisition board 344; the seed potatoes in the seed box 5 continuously flow into the feeding port 51, and the seed potatoes are separated and transported forward under the disturbance of the spiral auger 321 blades and the support of the seed guard plate 52; the seed potatoes separated by the spiral auger 321 flow into the seeding hole 332 of the seeding disk 331; during the rotation of the seeding disk 331, the empty disk photoelectric sensor 352 collects the information of the cover of the seeding disk 331 in real time. The pulse sequence signal of the block is processed by the empty disk information collection board 353 and then transmitted to the intelligent controller 361. The intelligent controller 361 collects the information recorded by the empty disk detector 35 and the ground wheel speed detector 34 at high frequency, and sends instructions to the first / second servo driver 362 / 363 in combination with the speed and empty seed information according to a preset algorithm. The first / second servo driver 362 / 363 drives the servo motor to adjust the speed of the seed disk 331 and the spiral auger 321, so as to achieve the purpose of uniform actual sowing spacing regardless of whether the seed disk 331 has an empty seed phenomenon.

[0088] The intelligent seed meter of the present invention is a combined seed meter of "spiral friction seed taking + seed tray precision seeding". Through mechatronics design, the spiral friction seed taking mechanism realizes single-grain separation of seed potatoes, and the seed tray mechanism realizes precise seeding of seed potatoes after single-grain separation. The control device adjusts the motor speed in real time according to the distribution of seed potatoes in the seed tray to ensure that the actual seeding spacing is uniform, that is, the actual sowing spacing can be controlled to the set plant spacing.

[0089] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. An intelligent seed metering device for a potato planter, characterized in that: include: A seeding support, mounted on the frame of the potato planter; A seeding device, installed on the seeding bracket, comprises a spiral friction seeding mechanism and a seeding disc mechanism, wherein two ends of the spiral friction seeding mechanism are respectively connected to the seed box of the potato planter and the seeding disc mechanism; A detection device, comprising a ground wheel speed detector and an empty disc detector, wherein the ground wheel speed detector is mounted on the frame corresponding to the ground wheel of the potato planter, and the empty disc detector is mounted on the seed disc mechanism; as well as A control device is installed on the frame and is connected to the seeding device and the detection device respectively. The control device adjusts the working speed of the spiral friction seed taking mechanism and the seeding disc mechanism in real time according to the ground wheel speed obtained by the ground wheel speed detector and the empty disc information uploaded by the empty disc detector, so as to control the actual sowing spacing to be the set plant spacing; The seeding disc mechanism is used to realize the precise seeding of seed potatoes after single seed separation, and comprises: A seeding disc is mounted on the seeding bracket, and a plurality of seeding holes for seed potatoes to pass through are evenly distributed on the seeding disc, so as to realize the precise seeding of a single seed potato; A seeding tube is arranged below the seeding plate and is adapted to the seeding hole; A seeding motor is installed on the seeding bracket and connected to the seeding disc, and the control device is connected to the seeding motor; and A seed guide tube is arranged above the seeding disc and adapted to the seeding hole, and is respectively connected to the seeding disc and the end of the spiral friction seed taking mechanism; The spiral friction seed taking mechanism is used to separate single seeds of seed potatoes, and comprises: A spiral auger is installed on the seeding support and is arranged corresponding to the feeding inlet of the seed box and the seeding tray to separate the seed potatoes into single grains; and An auger motor is connected to the spiral auger and the control device respectively, and the control device adjusts the rotation speed of the seeding motor and the auger motor in real time according to the distribution of the seed potatoes in the seeding tray to control the actual sowing spacing to the set plant spacing; The ground wheel speed detector comprises: A ground wheel sensor bracket is mounted on the frame; A plurality of speed measuring magnetic sheets are evenly installed on the ground wheel; A Hall speed sensor is mounted on the ground wheel sensor bracket corresponding to the speed measuring magnetic sheet, and is used to collect a pulse signal when the ground wheel rotates and drives the speed measuring magnetic sheet to pass; and A speed signal acquisition board, connected to the pulse output end of the Hall speed sensor and the control device respectively, for calculating the rotation speed of the ground wheel according to the frequency of the pulse signal sent by the Hall speed sensor, and transmitting the rotation speed information of the ground wheel to the control device; The empty tray detector comprises: An empty tray sensor bracket is installed on the seed tray mechanism; an empty tray photoelectric sensor, mounted on the empty tray sensor bracket, with a detection surface of the empty tray photoelectric sensor facing the seed tray; and The empty disk information acquisition board is connected to the pulse output end of the empty disk photoelectric sensor and the control device respectively. The empty disk information acquisition board determines whether there is an empty disk on the seeding disk according to the pulse sequence emitted by the empty disk photoelectric sensor, and generates empty disk information corresponding to the empty disk and transmits it to the control device.

2. The intelligent seed metering device according to claim 1, characterized in that: The auger motor and the seeding motor are both servo motors.

3. The intelligent seed metering device according to claim 2, characterized in that: The control device comprises: An intelligent controller is connected to the speed measurement signal acquisition board and the empty disk information acquisition board respectively; A first servo driver is connected to the intelligent controller and the auger motor respectively; and A second servo driver is connected to the intelligent controller and the seeding motor respectively; Among them, the intelligent controller makes a decision after receiving the rotation speed information of the ground wheel transmitted by the speed signal acquisition board and the empty plate information transmitted by the empty plate information acquisition board, and sends instructions to the first servo driver and / or the second servo driver respectively, so as to control the speed of the auger motor and / or the seeding motor to be controlled by the first servo driver and / or the second servo driver accordingly, so as to achieve the actual sowing spacing as the set plant spacing.

4. A potato planter, comprising a frame, a ground wheel mounted on the frame and an intelligent seeding device, characterized in that: The intelligent seed metering device is the intelligent seed metering device described in any one of claims 1-3.

5. The potato planter according to claim 4, characterized in that A control box is also provided on the frame, and the control device is installed in the control box.

6. The potato planter according to claim 5, characterized in that The speed measurement signal acquisition board and the empty disk information acquisition board are both installed in the control box.

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