Automatic reseeding system based on electromagnetic ridge searching

By combining electromagnetic row-finding technology and a camera module, the automatic replanting system achieves fully automatic replanting, solving the problem of low efficiency of existing replanting machines, improving replanting efficiency and reducing time costs.

CN223857608UActive Publication Date: 2026-01-30广州软件学院
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Patent Information

Application Number
CN202520545074.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-25
Publication Date
2026-01-30
Estimated Expiration
2035-03-25

AI Technical Summary

Technical Problem

The existing replanting machines are semi-automatic, requiring manual assistance to search for farmland, resulting in low replanting efficiency and high time costs, making it impossible to efficiently complete replanting operations in cases of large-scale seedling shortages.

Method used

Electromagnetic ridge-finding technology is used. A ridge-finding guide line is erected above the soil ridge and connected to an electromagnetic generator. The automatic replanting mobile device moves along the guide line using electromagnetic induction. Combined with a camera module, it identifies the missed planting locations and automatically replants. The controller drives the replanting module to perform the replanting action.

Benefits of technology

It has achieved fully automated replanting, which has improved replanting efficiency, reduced time costs, and increased the accuracy and efficiency of detecting missed planting.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of agricultural intelligence, in particular to an automatic reseeding system based on electromagnetic ridge searching, which comprises an automatic reseeding mobile device and a ridge searching guide line. The ridge searching guide line is erected above the soil ridge along the soil ridge, and the ridge searching guide line is electrically connected with the electromagnetic generator; the automatic reseeding mobile equipment is provided with a controller, an electromagnetic ridge searching module, a reseeding module and a camera module; the electromagnetic ridge searching module, the reseeding module and the camera module are electrically connected with the controller; the controller drives the automatic reseeding mobile equipment to track and move along the ridge searching guide line through electromagnetic induction between the electromagnetic ridge searching module and the ridge searching guide line; during moving, the controller visually identifies the seed leakage position in the ridge through the camera module and drives the reseeding module to execute reseeding action; the problems that a semi-automatic reseeding mode is low in reseeding efficiency and high in time cost are solved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural intelligent technical field, especially an automatic reseeding system based on electromagnetic ridge searching. BACKGROUND

[0002] The reseeding machine has very important significance in agricultural application, can assist staff to realize large-scale seeding, improve work efficiency, and ensure planting density. At present, the reseeding machine on the market still stays in semi-automation, only through infrared detection to detect whether it is missed seeding, then drive relevant mechanism to execute reseeding action, this process needs manual assistance (driving or pushing) reseeding machine to search all farmland, in the case of large area seedling shortage, this semi-automatic reseeding mode greatly increases time cost, and may miss the farm time due to waste a lot of time. UTILIT Y MODEL CONTENT

[0003] In view of the above-mentioned defects, the utility model aims at providing an automatic reseeding system based on electromagnetic ridge searching, which solves the problems of low reseeding efficiency and high time cost of semi-automatic reseeding mode.

[0004] To achieve this purpose, the utility model adopts the following technical scheme:

[0005] An automatic reseeding system based on electromagnetic ridge searching, comprising an automatic reseeding mobile device and a ridge searching guide line, the ridge searching guide line is erected above the soil ridge along the soil ridge, and the ridge searching guide line is electrically connected with an electromagnetic generator;

[0006] The automatic reseeding mobile device is provided with a controller, an electromagnetic ridge searching module, a reseeding module and a camera module, the electromagnetic ridge searching module, the reseeding module and the camera module are electrically connected with the controller respectively;

[0007] The controller drives the automatic reseeding mobile device to move along the ridge searching guide line through electromagnetic induction between the electromagnetic ridge searching module and the ridge searching guide line, the controller drives the reseeding module to execute reseeding action through visual identification of the missed seeding position in the soil ridge by the camera module in the moving process.

[0008] Further, the controller comprises a microprocessor and an integrated mainboard, the microprocessor and the integrated mainboard are electrically connected, the camera module and the integrated mainboard are electrically connected, and the electromagnetic ridge searching module and the reseeding module are electrically connected with the microprocessor respectively;

[0009] The data processing capacity of the integrated mainboard is greater than that of the microprocessor, and the microprocessor is used for feeding back signals to the integrated mainboard and executing action instructions issued by the integrated mainboard.

[0010] Further, the electromagnetic ridge-finding module comprises an LC resonance frequency selection circuit and a gain amplification circuit; the LC resonance frequency selection circuit is electrically connected with the controller through the gain amplification circuit.

[0011] Further, each column of the ridges is provided with the ridge-finding guide wire, and each ridge-finding guide wire is electrically connected with the electromagnetic generator of a different frequency band.

[0012] The electromagnetic ridge-finding module comprises a plurality of LC resonance frequency selection circuits, each of which is electrically connected with the ridge-finding guide wire and is electrically connected with the gain amplification circuit.

[0013] Further, the LC resonance frequency selection circuit comprises an inductor L4 and a capacitor C21; one end of the inductor L4 and one end of the capacitor C21 are grounded; the other end of the inductor L4 and the other end of the capacitor C21 are electrically connected with the gain amplification circuit after being connected together.

[0014] Further, the reseeding module comprises a seed remaining amount detection and alarm circuit and at least one reseeding action driving circuit; the seed remaining amount detection and alarm circuit and the reseeding action driving circuit are electrically connected with the controller respectively.

[0015] The seed remaining amount detection and alarm circuit detects the seed remaining amount in the seed tank of the automatic reseeding mobile device and feeds back the seed remaining amount to the controller, the controller drives the reseeding action driving circuit to work cooperatively according to the seed remaining amount; and when the seed remaining amount is lower than a warning threshold, the controller controls the seed remaining amount detection and alarm circuit to issue a warning of insufficient seed remaining amount.

[0016] Further, the seed remaining amount detection and alarm circuit comprises a buzzer sub-circuit and at least one detection sub-circuit; the buzzer sub-circuit and the detection sub-circuit are electrically connected with the controller respectively.

[0017] The detection sub-circuit is used to detect the seed remaining amount and feed back the seed remaining amount to the controller.

[0018] The buzzer sub-circuit is used to issue a warning of insufficient seed remaining amount under the control of the controller.

[0019] Further, the detection sub-circuit is an ultrasonic detection circuit.

[0020] When the detection sub-circuit is one, a probe of the detection sub-circuit is arranged at the top center of the seed tank and faces the bottom of the seed tank.

[0021] When the detection sub-circuit is multiple, the probes of the detection sub-circuit are uniformly arranged on the top of the seed box and all face the bottom of the seed box.

[0022] Further, the automatic reseeding mobile device is also provided with a watering module; the watering module is electrically connected with the controller; the watering module is used for detecting the temperature and humidity feedback of the soil ridge to the controller, and is also used for executing the watering action under the control of the controller.

[0023] Further, the watering module comprises at least one temperature and humidity detection circuit and at least one watering action driving circuit; the temperature and humidity detection circuit and the watering action driving circuit are electrically connected with the controller respectively.

[0024] The temperature and humidity detection circuit is used for detecting the temperature and humidity feedback to the controller.

[0025] The watering action driving circuit is used for executing the watering action under the control of the controller.

[0026] The technical scheme provided by the utility model can have the following beneficial effects: considering that a row of neat soil ridges will be formed in a farmland where crops are planted, generally, reseeding operation is to check all the soil ridges to find whether there is a large-interval missing seed position in the same row of soil ridges; based on this, in order to realize full-automatic reseeding without manual assistance, a ridge searching guide line is arranged above the soil ridges in the farmland and is electrically connected with an electromagnetic generator, so that when the electromagnetic generator sends a specific frequency signal to the ridge searching guide line (such as a lacquered wire), an automatic reseeding mobile device (such as a reseeding machine) can drive the automatic reseeding mobile device to move along the ridge searching guide line through electromagnetic induction between the electromagnetic ridge searching module and the ridge searching guide line, the automatic reseeding mobile device can automatically check all the soil ridges in turn, and in this process, the missing seed position in the soil ridge is visually recognized through the camera module, the missing seed checking efficiency and accuracy in the rapid ridge checking process are improved, then the reseeding module is driven to execute the reseeding action, and full-automatic reseeding is completed, the reseeding efficiency is improved, and the time cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a principle diagram of an automatic reseeding system based on electromagnetic ridge searching which is one of the embodiments of the utility model.

[0028] Figure 2 is a circuit schematic view of the electromagnetic ridge searching module as shown in Figure 1 .

[0029] Figure 3 is a partial circuit schematic view of the reseeding module as shown in Figure 1 .

[0030] Figure 4 is a circuit schematic view of the reseeding module as shown inFigure 1 The circuit schematic diagram of the watering module is shown.

[0031] Wherein: the ridge guiding line 1, the soil ridge 2, the controller 3, the electromagnetic ridge searching module 4, the reseeding module 5, the camera module 6, the microprocessor 31, the integrated mainboard 32, the LC resonant frequency selection circuit 41, the gain amplification circuit 42, the inductor L4, the capacitor C21, the seed residual amount detection and alarm circuit 51, the buzzer sub-circuit 511, the detection sub-circuit 512, the watering module 7, the temperature and humidity detection circuit 71, and the watering action driving circuit 72. DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0033] In the description of the embodiments of the present application, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0034] In the description of the embodiments of the present application, it should be noted that, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0035] The embodiments of the present application are described below in combination with Figures 1 to 4 , an automatic reseeding system based on electromagnetic ridge searching.

[0036] An automatic reseeding system based on electromagnetic ridge searching, comprising an automatic reseeding mobile device and a ridge guiding line 1; the ridge guiding line 1 is arranged above the soil ridge 2 along the soil ridge 2, and the ridge guiding line 1 is electrically connected with an electromagnetic generator;

[0037] The automatic reseeding mobile device is provided with a controller 3, an electromagnetic ridge searching module 4, a reseeding module 5 and a camera module 6; the electromagnetic ridge searching module 4, the reseeding module 5 and the camera module 6 are electrically connected with the controller 3 respectively;

[0038] The controller 3 drives the automatic reseeding mobile device to move along the ridge guide line 1 through electromagnetic induction between the electromagnetic ridge searching module 4 and the ridge guide line 1; the controller 3 visually identifies the missing seed position in the soil ridge 2 through the camera module 6 during the movement, and drives the reseeding module 5 to perform the reseeding action.

[0039] In the preferred embodiment of the automatic reseeding system based on electromagnetic ridge searching, as shown in Figure 1 It is considered that a row of neat soil ridges 2 will be formed in the field where crops are planted, and the general reseeding operation is to check all the soil ridges 2 to find whether there is a missing seed position with a large interval in the same row of soil ridges 2; based on this, in order to realize the whole process of reseeding operation without manual assistance, the ridge guide line 1 is erected above the soil ridges 2 in the field and is electrically connected with the electromagnetic generator, so that when the electromagnetic generator sends a specific frequency signal to the ridge guide line 1 (such as a painted line), the automatic reseeding mobile device (such as a reseeding machine) can be driven to move along the ridge guide line 1 through electromagnetic induction between the electromagnetic ridge searching module 4 and the ridge guide line 1, the automatic reseeding mobile device can automatically check all the soil ridges 2 in turn, and in this process, the missing seed position in the soil ridge 2 can be visually identified through the camera module 6, the missing seed detection efficiency and accuracy in the process of rapid ridge inspection are improved, then the reseeding action is performed through the driving of the reseeding module 5, and the whole automatic reseeding is completed, the reseeding efficiency is improved, and the time cost is reduced.

[0040] Further, the controller 3 includes a microprocessor 31 and an integrated mainboard 32; the microprocessor 31 and the integrated mainboard 32 are electrically connected, the camera module 6 and the integrated mainboard 32 are electrically connected, and the electromagnetic ridge searching module 4 and the reseeding module 5 are electrically connected with the microprocessor 31 respectively;

[0041] The data processing capacity of the integrated mainboard 32 is greater than that of the microprocessor 31; the microprocessor 31 is used for feeding back signals to the integrated mainboard 32 and executing the action instructions sent by the integrated mainboard 32.

[0042] In the embodiment, the controller 3 adopts a dual-processor architecture, can support multiple modules to work at the same time, reduces the system power consumption, and also reserves a data processing capacity margin for subsequent expansion modules. More importantly, the two processors are also divided, the microprocessor 31 (such as the MCU minimum system) with smaller data processing capacity is used to be responsible for the signal feedback of each module, and to drive each module to execute corresponding actions according to the action instructions; the integrated mainboard 32 (such as the Raspberry Pi integrated mainboard, which is integrated with Figure 1The multiple modules shown are used for centralized processing and judgment of the module signal feedback data and visual identification data; thereby through functional division, the data processing efficiency is improved.

[0043] Further, the electromagnetic ridge searching module 4 comprises an LC resonance frequency selection circuit 41 and a gain amplification circuit 42; the LC resonance frequency selection circuit 41 is electrically connected with the controller 3 through the gain amplification circuit 42.

[0044] In the embodiment, as shown in the figure, Figure 2 The electromagnetic ridge searching module 4 is preferably composed of the LC resonance frequency selection circuit 41 and the gain amplification circuit 42, and the use of the LC circuit instead of the traditional inductive sensor can effectively improve the detection range and has better anti-interference ability, which is more conducive to electromagnetic induction with the ridge searching guide wire 1 erected above.

[0045] It should be noted that the electromagnetic ridge searching module 4 can also be provided with an electromagnetic ridge searching power indicator light (such as a power series resistor R29 and a light emitting diode LED2 connected to ground) for prompting the working state of the electromagnetic ridge searching module 4.

[0046] Further, the ridge searching guide wire 1 is erected separately for each row of soil ridge 2, and each ridge searching guide wire 1 is electrically connected with an electromagnetic generator of different frequency band;

[0047] The electromagnetic ridge searching module 4 comprises multiple LC resonance frequency selection circuits 41, each of which is electrically connected with the ridge searching guide wire 1 one by one, and each of which is electrically connected with the gain amplification circuit 42.

[0048] In the embodiment, in order to expand the path of electromagnetic ridge searching, the independent frequency band is preferably used for each row of soil ridge 2, so that the automatic reseeding mobile device has the ability to cross the ridge and can perform specific ridge searching operation without needing to patrol all soil ridges 2 each time.

[0049] At this time, the gain amplification circuit 42 can be composed of an integrated operational amplifier chip and its peripheral circuit (taking the U5 chip circuit in the figure as an example), and each LC resonance frequency selection circuit 41 is electrically connected with one operational amplifier circuit in the gain amplification circuit 42, so as to realize the gain amplification feedback of the multiple frequency band signals to the microprocessor 31. Figure 2

[0050] Further, the LC resonance frequency selection circuit 41 comprises an inductor L4 and a capacitor C21; one end of the inductor L4 and one end of the capacitor C21 are both grounded; the other end of the inductor L4 and the other end of the capacitor C21 are commonly connected and electrically connected with the gain amplification circuit 42.

[0051] ​In this embodiment, the LC resonant frequency selection circuit 41 is provided with multiple LC resonant frequency selection circuits for simplifying the circuit, and the LC resonant frequency selection circuit 41 is preferably composed of an inductor L4 and a capacitor C21 in parallel to form an LC circuit.

[0052] Further, the reseeding module 5 comprises a seed residual amount detection and alarm circuit 51 and at least one reseeding action driving circuit; the seed residual amount detection and alarm circuit 51 and the reseeding action driving circuit are electrically connected with the controller 3 respectively;

[0053] The seed residual amount detection and alarm circuit 51 detects the seed residual amount in the seed tank of the automatic reseeding mobile device and feeds back to the controller 3, the controller 3 drives the reseeding action driving circuit to work cooperatively according to the seed residual amount; and when the seed residual amount is lower than the warning threshold, the controller 3 controls the seed residual amount detection and alarm circuit 51 to issue a warning of insufficient seed residual amount.

[0054] In this embodiment, the reseeding module 5 needs the seed residual amount detection and alarm circuit 51 to detect the seed residual amount and issue a warning to remind the staff to replenish the seed in time and prevent the reseeding action driving circuit from being driven uselessly. At the same time, since the reseeding action may need one or more driving mechanisms (such as a motor or a rudder) to drive the related mechanical members to complete a series of reseeding actions such as seed taking, soil digging, seed placing, and soil covering, at least one reseeding action driving circuit (such as a relay circuit, the related mechanical members act after the relay is attracted) is needed to execute the reseeding action.

[0055] Further, the seed residual amount detection and alarm circuit 51 comprises a buzzer sub-circuit 511 and at least one detection sub-circuit 512; the buzzer sub-circuit 511 and the detection sub-circuit 512 are electrically connected with the controller 3 respectively;

[0056] The detection sub-circuit 512 is used to detect the seed residual amount and feed back to the controller 3;

[0057] The buzzer sub-circuit 511 is used to issue a warning of insufficient seed residual amount under the control of the controller 3.

[0058] In this embodiment, as shown in Figure 3 The two functions of the seed residual amount detection and alarm circuit 51 are realized by the buzzer sub-circuit 511 and the detection sub-circuit 512 (such as infrared detection, ultrasonic detection, etc.) respectively.

[0059] Further, the detection sub-circuit 512 is an ultrasonic detection circuit;

[0060] When the detection sub-circuit 512 is one, the probe of the detection sub-circuit 512 is arranged at the top center of the seed tank and faces the bottom of the seed tank;

[0061] When the detection sub-circuit 512 is multiple, the probes of the detection sub-circuit 512 are uniformly distributed on the top of the seed tank and all face the bottom of the seed tank.

[0062] In the embodiment, based on the fact that the seeds are generally placed in the tank, in order to make the detection sub-circuit 512 more accurately detect the seed reserves in the tank, the detection sub-circuit 512 preferably adopts an ultrasonic detection circuit (for example, an ultrasonic sensor U8 and its peripheral circuit as shown in Figure 3 , and the probe (i.e. the ultrasonic sensor U8) is arranged at the center of the top of the seed tank or arrayed on the top of the seed tank, so as to expand the coverage of the ultrasonic wave on the seed pile and accurately judge the descending condition of the seed pile.

[0063] Further, the automatic reseeding mobile device is also provided with a watering module 7; the watering module 7 is electrically connected with the controller 3; the watering module 7 is used for detecting the temperature and humidity of the soil ridge 2 and feeding back to the controller 3, and is also used for executing the watering action under the control of the controller 3.

[0064] In the embodiment, based on the fact that watering is generally needed at the reseeding position after reseeding to help the growth of the seeds, therefore, the automatic reseeding mobile device can also be expanded with the watering module 7, and the position with insufficient water in the soil ridge 2 can also be watered through temperature and humidity detection during the ridge inspection process.

[0065] Further, the watering module 7 comprises at least one temperature and humidity detection circuit 71 and at least one watering action driving circuit 72; the temperature and humidity detection circuit 71 and the watering action driving circuit 72 are respectively electrically connected with the controller 3;

[0066] The temperature and humidity detection circuit 71 is used for detecting the temperature and humidity and feeding back to the controller 3;

[0067] The watering action driving circuit 72 is used for executing the watering action under the control of the controller 3.

[0068] In the embodiment, as shown in Figure 4 , the functions of the watering module 7 are respectively realized by the temperature and humidity detection circuit 71 (for example, a temperature and humidity sensor U9 and its peripheral circuit as shown in Figure 4 ) and the watering action driving circuit 72 (for example, a relay RLY1 and its peripheral circuit as shown in Figure 4 ).

[0069] It should be noted that the number of the temperature and humidity detection circuit 71 can be increased or decreased according to the actual detection environment and the detection accuracy requirement; the number of the watering action driving circuit 72 is increased or decreased according to the number of the driving mechanism (for example, a motor or a rudder) required to complete the watering action.

[0070] Other configurations and operations of the automatic reseeding system based on electromagnetic ridge searching according to the embodiments of the utility model are known to those skilled in the art, and will not be described in detail here.

[0071] In the description of the present specification, the description referring to the terms "embodiment", "example", and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0072] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An automatic replanting system based on electromagnetic row finding, characterized by: The automatic reseeding mobile device and the ridge-seeking guide line; the ridge-seeking guide line is erected above the soil ridge along the soil ridge, and the ridge-seeking guide line is electrically connected with the electromagnetic generator; The automatic reseeding mobile device is provided with a controller, an electromagnetic ridge-seeking module, a reseeding module and a camera module; the electromagnetic ridge-seeking module, the reseeding module and the camera module are electrically connected with the controller respectively; The controller drives the automatic reseeding mobile device to move along the ridge-seeking guide line through electromagnetic induction between the electromagnetic ridge-seeking module and the ridge-seeking guide line; the controller visually identifies the missing seed position in the soil ridge through the camera module during the movement, and drives the reseeding module to perform the reseeding action.

2. The automatic replanting system based on electromagnetic furrow searching according to claim 1, characterized in that: The controller includes a microprocessor and an integrated mainboard; the microprocessor and the integrated mainboard are electrically connected, the camera module and the integrated mainboard are electrically connected, and the electromagnetic ridge-seeking module and the reseeding module are electrically connected with the microprocessor respectively; The data processing capacity of the integrated mainboard is greater than that of the microprocessor; the microprocessor is used for feeding back signals to the integrated mainboard and executing action instructions issued by the integrated mainboard.

3. The automatic replanting system based on electromagnetic furrow searching according to claim 1, characterized in that: The electromagnetic ridge-seeking module includes an LC resonance frequency selection circuit and a gain amplification circuit; the LC resonance frequency selection circuit is electrically connected with the controller through the gain amplification circuit.

4. The automatic replanting system based on electromagnetic furrow searching according to claim 3, characterized in that: Each of the soil ridges is erected with the ridge-seeking guide line, and each of the ridge-seeking guide lines is electrically connected with the electromagnetic generator of different frequency bands; The electromagnetic ridge-seeking module includes a plurality of LC resonance frequency selection circuits, the LC resonance frequency selection circuits are electrically connected with the ridge-seeking guide lines one by one, and the LC resonance frequency selection circuits are electrically connected with the gain amplification circuit respectively.

5. The automatic replanting system based on electromagnetic furrow searching according to claim 3, characterized in that: The LC resonance frequency selection circuit includes an inductor L4 and a capacitor C21; one end of the inductor L4 and one end of the capacitor C21 are grounded; the other end of the inductor L4 and the other end of the capacitor C21 are connected in common and electrically connected with the gain amplification circuit.

6. The automatic replanting system based on electromagnetic furrow searching according to claim 1, characterized in that: The reseeding module includes a seed remaining amount detection and alarm circuit and at least one reseeding action driving circuit; the seed remaining amount detection and alarm circuit and the reseeding action driving circuit are electrically connected with the controller respectively; The seed remaining amount detection and alarm circuit detects the seed remaining amount in the seed box of the automatic reseeding mobile device and feeds back to the controller, the controller drives the reseeding action driving circuit to work cooperatively according to the seed remaining amount; and when the seed remaining amount is lower than the warning threshold, the controller controls the seed remaining amount detection and alarm circuit to issue a warning of insufficient seed remaining amount.

7. The automatic replanting system based on electromagnetic furrow searching according to claim 6, characterized in that: The seed remaining amount detection and alarm circuit includes a buzzer sub-circuit and at least one detection sub-circuit; the buzzer sub-circuit and the detection sub-circuit are electrically connected with the controller respectively; The detection sub-circuit is used for detecting the seed remaining amount and feeding back to the controller; The buzzer sub-circuit is used for issuing a warning of insufficient seed remaining amount under the control of the controller.

8. The automatic replanting system based on electromagnetic furrow searching according to claim 7, characterized in that: The detection sub-circuit is an ultrasonic detection circuit; When the detection sub-circuit is one, a probe of the detection sub-circuit is arranged at the top center of the seed box and faces the bottom of the seed box; When the detection sub-circuit is multiple, probes of the detection sub-circuits are uniformly arranged at the top of the seed box and all face the bottom of the seed box.

9. The automatic replanting system based on electromagnetic furrow searching according to claim 1, characterized in that: The automatic reseeding mobile device is further provided with a watering module; the watering module is electrically connected with the controller; the watering module is used for detecting the temperature and humidity feedback of the soil ridge to the controller, and is also used for executing the watering action under the control of the controller.

10. The automatic seed replenishment system based on electromagnetic furrow searching according to claim 9, characterized in that: The watering module comprises at least one temperature and humidity detection circuit and at least one watering action driving circuit; the temperature and humidity detection circuit and the watering action driving circuit are respectively electrically connected with the controller; The temperature and humidity detection circuit is used for detecting the temperature and humidity feedback to the controller; The watering action driving circuit is used for executing the watering action under the control of the controller.