A method and apparatus for gear position recognition based on an electromagnetic induction switch

Abstract

This invention provides a gear position recognition method and device based on an electromagnetic induction switch. The method involves moving the magnet closer to the electromagnetic induction switch when the manual transmission gear position switch moves, thereby causing the electromagnetic induction switch to generate a current and output a level signal. Based on the level signal, the current gear position of the manual transmission can be obtained, improving the gear position recognition speed, avoiding the mechanical structure of traditional contact switches, and reducing after-sales failures.

Description

Technical Field

[0001] This invention relates to the technical field of automobile design, and in particular to a method and device for gear position recognition based on an electromagnetic induction switch. Background Technology

[0002] In the current commercial truck market, manual transmission models still account for over 90% of the market share. Most manual transmissions are equipped with neutral and reverse switches, used for functions such as engine start-in protection and reversing light control, respectively. However, almost all commercial truck transmissions on the market use simple mechanical contact switches. In the complex and harsh operating environment of trucks, these contact switches frequently experience problems such as contact breakage and foreign objects at the contacts, leading to poor contact continuity, abnormal vehicle function, high after-sales failure rates, and numerous customer complaints. Summary of the Invention

[0003] This invention provides a gear position recognition method and device based on an electromagnetic induction switch, which improves gear position recognition speed and reduces after-sales failures.

[0004] To achieve the above objectives, the present invention provides a gear position recognition method based on an electromagnetic induction switch, specifically including:

[0005] The electromagnetic induction switch in the manual transmission is activated according to the movement and change of the gear position switch.

[0006] According to the movement and change of the gear switch, the magnet in the gearbox is gradually brought closer to the electromagnetic induction switch, so that the Hall switch in the electromagnetic induction switch forms a level, and according to the level, a first level signal is output in the electromagnetic induction switch.

[0007] Based on the first level signal, a current loop is formed through the field-effect transistor in the electromagnetic induction switch to output a second level signal;

[0008] Based on the second level signal output by the electromagnetic induction switch, it is determined that the gear position switch is closed, so that other systems connected to the gear position switch can obtain the current gear of the manual transmission.

[0009] This invention provides a gear position recognition method based on an electromagnetic induction switch. The method activates an electromagnetic induction switch located within the transmission by moving the manual transmission gear position switch, improving the recognition speed during gear changes. Then, based on the movement of the gear position switch, a magnet within the transmission is brought close to the electromagnetic induction switch to generate an electrical level, further improving the accuracy of gear position recognition. The electromagnetic induction switch then generates a current based on this level, outputting a signal indicating that the current gear position switch is closed. Other systems in the vehicle connected to the transmission receive this signal to determine the current gear position, further enhancing the speed of gear position recognition during gear changes. Furthermore, this invention uses an electromagnetic induction switch, eliminating traditional mechanical contacts and avoiding issues such as contact breakage or foreign objects at the contact points, thus reducing after-sales failure rates.

[0010] As a preferred example, prior to activating the electromagnetic induction switch in the manual transmission, the procedure specifically includes:

[0011] Based on the vehicle's overall circuit design, the current vehicle's circuit structure is determined to be either a first acquisition circuit structure or a second acquisition circuit structure; wherein, the first acquisition circuit structure is the circuit structure required by the overall vehicle circuit design for the vehicle to acquire high-level signals; and the second acquisition circuit structure is the circuit structure required by the overall vehicle circuit design for the vehicle to acquire low-level signals.

[0012] Based on the determined circuit structure, the electromagnetic induction switch is configured for the vehicle.

[0013] According to the circuit design requirements during vehicle design, this invention selects a corresponding electromagnetic induction switch to make the output conform to the level signal received by other systems of the vehicle connected to the transmission, thereby improving the accuracy of the vehicle in obtaining the current gear status.

[0014] As a preferred example, configuring the electromagnetic induction switch for the vehicle according to the determined circuit structure specifically includes:

[0015] If the determined circuit structure is the first acquisition circuit structure, a high-level electromagnetic induction switch is configured for the vehicle; if the circuit structure is the second acquisition circuit structure, a low-level electromagnetic induction switch is selected.

[0016] When the high-level electromagnetic induction switch is closed, the second level signal output by the electromagnetic induction switch is a 24V high-level signal.

[0017] When the low-level electromagnetic induction switch is closed, the second level signal output by the electromagnetic induction switch is a 0V ground low-level signal.

[0018] This invention selects an electromagnetic induction switch that matches the vehicle's overall circuit design, ensuring that other systems can accurately receive the current level signal and promptly obtain the current gear status, thereby improving the speed of gear recognition.

[0019] As a preferred example, the Hall switch in the electromagnetic induction switch generates a level, and based on the level, the electromagnetic induction switch outputs a first level signal, specifically including:

[0020] According to the movement and change of the gear switch, the magnetic sticker is continuously brought closer to the Hall switch in the electromagnetic induction switch, so that the Hall switch in the electromagnetic induction switch outputs a low-level signal; the first level signal is the low-level signal.

[0021] The electromagnetic induction switch designed in this invention is activated by the movement of the magnet. It eliminates the need for traditional mechanical contacts, thus avoiding problems such as contact breakage and foreign objects at the contacts, reducing the after-sales failure rate. At the same time, the movement of the magnet can instantly detect changes in gear position, improving the speed of gear recognition.

[0022] As a preferred example, the current loop formed by the field-effect transistor disposed in the electromagnetic induction switch specifically includes:

[0023] If the electromagnetic induction switch is a high-efficiency electromagnetic induction switch, according to the first level signal, the field-effect transistor in the high-efficiency electromagnetic induction switch generates a voltage difference, thereby generating current in the two stages of the field-effect transistor.

[0024] Based on the current, the input and output terminals of the electromagnetic induction switch form a current loop.

[0025] This invention utilizes the voltage level generated when a magnet approaches, causing a voltage difference to form in the field-effect transistor installed in the electromagnetic induction switch, thereby generating a current. This allows the electromagnetic induction switch to form a current loop, completing the operation of the entire switch and enabling the subsequent output of a high-level signal to meet the circuit design requirements of the vehicle. It eliminates the need for traditional mechanical contacts, thus improving the usage time of the method.

[0026] As a preferred example, the current loop formed by the field-effect transistor disposed in the electromagnetic induction switch specifically includes:

[0027] If the electromagnetic induction switch is a low-activity electromagnetic induction switch, according to the first level signal, a low-level signal is output through one end of the transistor set in the low-activity electromagnetic induction switch, and a current loop is formed at the other two ends.

[0028] According to the current loop, the voltage difference formed by the field-effect transistor in the low-effectiveness electromagnetic induction switch causes the field-effect transistor to form a voltage difference, thereby causing a current to be formed across the two ends of the field-effect transistor.

[0029] Based on the current, the input and output terminals of the electromagnetic induction switch form a current loop.

[0030] This invention utilizes the voltage level generated when a magnet approaches, causing a voltage difference to form in the transistor installed in the electromagnetic induction switch, which in turn generates a current. This voltage difference then forms in the field-effect transistor, which in turn generates a current, thus creating a current loop in the electromagnetic induction switch and completing the operation of the entire switch. This allows for the subsequent output of a low-level signal to meet vehicle requirements. There are no traditional mechanical contacts, which improves the usage time of the method.

[0031] As a preferred example, the output second-level signal specifically includes:

[0032] Based on the current generated by the field-effect transistor installed in the electromagnetic induction switch, the output and input terminals of the electromagnetic induction switch thus form a current loop.

[0033] According to the current loop, the output terminal of the electromagnetic induction switch outputs a level signal.

[0034] This invention enables the vehicle to obtain the gear position of the transmission through a simple output level signal. By using simple electromagnetic induction, the current gear position of the vehicle can be obtained, avoiding the disadvantages of traditional mechanical systems that are prone to damage, while improving the recognition speed.

[0035] On the other hand, the present invention provides a gear position recognition device based on an electromagnetic induction switch, including a start module, a sensing module, an output module and a recognition module;

[0036] The starting module is used to activate the electromagnetic induction switch in the manual transmission according to the movement and change of the gear position switch of the manual transmission.

[0037] The sensing module is used to gradually bring the magnet in the gearbox closer to the electromagnetic induction switch according to the movement of the gear switch, so that the Hall switch in the electromagnetic induction switch forms a level, and outputs a first level signal in the electromagnetic induction switch according to the level.

[0038] The output module is used to output a second level signal by forming a current loop through the field-effect transistor in the electromagnetic induction switch according to the first level signal;

[0039] The identification module is used to determine that the gear position switch is closed based on the second level signal output by the electromagnetic induction switch, so that other systems connected to the gear position switch can obtain the current gear of the manual transmission.

[0040] This invention provides a gear position recognition device based on an electromagnetic induction switch. The device activates an electromagnetic induction switch located in the transmission via a start-up module, which moves the manual transmission gear position switch, improving the recognition speed during gear changes. Then, a sensing module controls a magnet in the transmission to approach the electromagnetic induction switch based on the movement of the gear position switch, creating an electrical level and improving the accuracy of gear change recognition. Next, an output module controls the electromagnetic induction switch to generate a current based on the electrical level, outputting an electrical signal indicating that the current gear position switch is closed. Other systems in the vehicle connected to the transmission receive this signal through a recognition module to obtain the current gear position, further improving the speed of gear position recognition during gear changes. Furthermore, this invention uses an electromagnetic induction switch, eliminating traditional mechanical contacts and avoiding problems such as contact breakage or foreign objects at the contacts, thus reducing after-sales failure rates.

[0041] As a preferred example, the startup module includes a judgment unit and a matching unit;

[0042] The determination unit is used to determine, based on the vehicle's overall circuit design, whether the current vehicle's circuit structure is a first acquisition circuit structure or a second acquisition circuit structure; wherein, the first acquisition circuit structure is a circuit structure required by the vehicle's overall circuit design to acquire a high-level signal; the second acquisition circuit structure is a circuit structure required by the vehicle's overall circuit design to acquire a low-level signal; and according to the determined circuit structure, the electromagnetic induction switch is configured for the vehicle.

[0043] The matching unit is used to configure a high-level electromagnetic induction switch for the vehicle if the determined circuit structure is a first acquisition circuit structure; and to select a low-level electromagnetic induction switch if the circuit structure is a second acquisition circuit structure. When the high-level electromagnetic induction switch is the gear switch closed, the second-level signal output by the electromagnetic induction switch is a 24V high-level signal; when the low-level electromagnetic induction switch is the gear switch closed, the second-level signal output by the electromagnetic induction switch is a 0V ground low-level signal.

[0044] This invention obtains the current vehicle's circuit structure through a judgment unit, and then selects the corresponding electromagnetic induction switch according to the circuit structure designed in the vehicle by a matching unit, so that the output matches the level signal received by other automotive systems connected to the transmission, thereby improving the accuracy of the vehicle in obtaining the current gear position and enabling the vehicle to accurately obtain the current gear position of the manual transmission.

[0045] As a preferred example, the output module includes a low-level output unit and a high-level output unit;

[0046] The high-level output unit is used to generate a voltage difference in the field-effect transistor in the high-efficiency electromagnetic induction switch according to the first level signal when the electromagnetic induction switch is a high-efficiency electromagnetic induction switch, thereby generating current in the two stages of the field-effect transistor; according to the current, the input and output terminals of the electromagnetic induction switch form a current loop; according to the current loop, the output terminal of the electromagnetic induction switch outputs a high-level signal.

[0047] The low-level output unit is used to, when the electromagnetic induction switch is a low-activity electromagnetic induction switch, output a low-level signal through one end of the transistor in the low-activity electromagnetic induction switch according to the first level signal, and form a current loop at the other two ends; according to the current loop, the voltage difference formed by the field-effect transistor in the low-activity electromagnetic induction switch causes the field-effect transistor to form a voltage difference, thereby causing a current to form across the field-effect transistor; according to the current, the input and output ends of the electromagnetic induction switch form a current loop; according to the current loop, the output end of the electromagnetic induction switch outputs a low-level signal.

[0048] The present invention uses the high-active and low-active electromagnetic induction switches to form a current loop according to the voltage level, and outputs a high-level or low-level signal so that other systems connected to the gearbox can receive the high-level or low-level signal, obtain the current gear position status of the gearbox, and improve the gear position recognition speed. Attached Figure Description

[0049] Figure 1 : A schematic flowchart of a gear position recognition method based on an electromagnetic induction switch provided in an embodiment of the present invention;

[0050] Figure 2 : A schematic diagram of a gear position recognition device based on an electromagnetic induction switch provided in an embodiment of the present invention;

[0051] Figure 3 : A schematic diagram of the structure of a Hall switch in an electromagnetic induction switch provided in an embodiment of the present invention;

[0052] Figure 4 : A schematic diagram of the circuit structure of a highly effective electromagnetic induction switch provided in an embodiment of the present invention;

[0053] Figure 5 : A circuit structure diagram of a low-effectiveness electromagnetic induction switch provided in an embodiment of the present invention. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] Example 1

[0056] Please refer to Figure 1 This is a flowchart illustrating a gear position recognition method based on an electromagnetic induction switch provided by an embodiment of the present invention, mainly including steps 101 to 104, specifically including:

[0057] Step 101: Activate the electromagnetic induction switch in the manual transmission according to the movement of the gear position switch of the manual transmission.

[0058] In this embodiment, before performing this step, the method further includes: determining, based on the vehicle's overall circuit design, whether the current vehicle's circuit structure is a first acquisition circuit structure or a second acquisition circuit structure; wherein, the first acquisition circuit structure is a circuit structure required by the vehicle's overall circuit design to acquire a high-level signal; the second acquisition circuit structure is a circuit structure required by the vehicle's overall circuit design to acquire a low-level signal; and configuring the electromagnetic induction switch for the vehicle based on the determined circuit structure.

[0059] In this embodiment, configuring the electromagnetic induction switch specifically includes: if the determined circuit structure is a first acquisition circuit structure, configuring a high-level electromagnetic induction switch for the vehicle; if the circuit structure is a second acquisition circuit structure, selecting a low-level electromagnetic induction switch; when the high-level electromagnetic induction switch is used when the gear switch is closed, the second-level signal output by the electromagnetic induction switch is a 24V high-level signal; when the low-level electromagnetic induction switch is used when the gear switch is closed, the second-level signal output by the electromagnetic induction switch is a 0V ground low-level signal.

[0060] Step 102: Based on the movement of the gear switch, gradually bring the magnet in the gearbox closer to the electromagnetic induction switch so that the Hall switch in the electromagnetic induction switch forms a level, and output a first level signal in the electromagnetic induction switch according to the level.

[0061] In this embodiment, the step specifically involves: according to the movement of the gear switch, the magnet is continuously brought closer to the Hall switch in the electromagnetic induction switch, so that the Hall switch in the electromagnetic induction switch outputs a low-level signal; the first level signal is the low-level signal.

[0062] Step 103: Based on the first level signal, the electromagnetic induction switch forms a current loop through the field-effect transistor set in the electromagnetic induction switch and outputs a second level signal.

[0063] In this embodiment, the step specifically involves: if the electromagnetic induction switch is a high-activity electromagnetic induction switch, according to the first level signal, a voltage difference is generated in the field-effect transistor (FET) of the high-activity electromagnetic induction switch, thereby causing current to be generated at both ends of the FET; according to the current, a current loop is formed between the input and output ends of the electromagnetic induction switch; according to the current loop, a high-level signal is output at the output end of the electromagnetic induction switch. If the electromagnetic induction switch is a low-activity electromagnetic induction switch, according to the first level signal, a low-level signal is output at one end of the transistor in the low-activity electromagnetic induction switch, and a current loop is formed at the other two ends; according to the current loop, a voltage difference is generated in the FET of the low-activity electromagnetic induction switch, thereby causing a voltage difference to be generated at both ends of the FET; according to the current, a current loop is formed between the input and output ends of the electromagnetic induction switch; according to the current loop, a low-level signal is output at the output end of the electromagnetic induction switch.

[0064] Step 104: Based on the second level signal output by the electromagnetic induction switch, determine that the gear position switch is closed, so that other systems connected to the gear position switch can obtain the current gear of the manual transmission.

[0065] In this embodiment, the step specifically involves: when the current level signal is obtained, it means that the gear shift switch of the manual transmission is closed, and vehicles connected to different gears receive the corresponding level signals. Based on the level signal, the current gear of the vehicle is obtained.

[0066] Please refer to Figure 2 The diagram below shows a gear position recognition device based on an electromagnetic induction switch, which is provided in an embodiment of the present invention. It mainly includes a start-up module 201, a sensing module 202, an output module 203, and a recognition module 204.

[0067] The starting module 201 is used to activate the electromagnetic induction switch in the manual transmission according to the movement and change of the gear position switch of the manual transmission.

[0068] The sensing module 202 is used to gradually bring the magnet in the gearbox closer to the electromagnetic induction switch according to the movement change of the gear switch, so that the Hall switch in the electromagnetic induction switch forms a level, and outputs a first level signal in the electromagnetic induction switch according to the level.

[0069] The output module 203 is used to output a second level signal by forming a current loop through the field-effect transistor in the electromagnetic induction switch according to the first level signal.

[0070] The identification module 204 is used to determine that the gear switch is closed based on the second level signal output by the electromagnetic induction switch, so that other systems connected to the gear switch can obtain the current gear of the manual transmission.

[0071] In this embodiment, the startup module 201 includes a judgment unit and a matching unit.

[0072] The determination unit is used to determine, based on the vehicle's overall circuit design, whether the current vehicle's circuit structure is a first acquisition circuit structure or a second acquisition circuit structure; wherein, the first acquisition circuit structure is a circuit structure required by the vehicle's overall circuit design to acquire a high-level signal; the second acquisition circuit structure is a circuit structure required by the vehicle's overall circuit design to acquire a low-level signal; and according to the determined circuit structure, the electromagnetic induction switch is configured for the vehicle.

[0073] The matching unit is used to configure a high-level electromagnetic induction switch for the vehicle if the determined circuit structure is a first acquisition circuit structure; and to select a low-level electromagnetic induction switch if the circuit structure is a second acquisition circuit structure. When the high-level electromagnetic induction switch is the gear switch closed, the second-level signal output by the electromagnetic induction switch is a 24V high-level signal; when the low-level electromagnetic induction switch is the gear switch closed, the second-level signal output by the electromagnetic induction switch is a 0V ground low-level signal.

[0074] The output module 203 includes a low-level output unit and a high-level output unit.

[0075] The high-level output unit is used to generate a voltage difference in the field-effect transistor in the high-efficiency electromagnetic induction switch according to the first level signal when the electromagnetic induction switch is a high-efficiency electromagnetic induction switch, thereby generating current in the two stages of the field-effect transistor; according to the current, the input and output terminals of the electromagnetic induction switch form a current loop; according to the current loop, the output terminal of the electromagnetic induction switch outputs a high-level signal.

[0076] The low-level output unit is used to, when the electromagnetic induction switch is a low-activity electromagnetic induction switch, output a low-level signal through one end of the transistor in the low-activity electromagnetic induction switch according to the first level signal, and form a current loop at the other two ends; according to the current loop, the voltage difference formed by the field-effect transistor in the low-activity electromagnetic induction switch causes the field-effect transistor to form a voltage difference, thereby causing a current to form across the field-effect transistor; according to the current, the input and output ends of the electromagnetic induction switch form a current loop; according to the current loop, the output end of the electromagnetic induction switch outputs a low-level signal.

[0077] Please refer to Figure 3 This is a schematic diagram of the structure of a Hall switch in an electromagnetic induction switch provided by an embodiment of the present invention, which mainly includes a magnet and a unipolar Hall switch.

[0078] In this embodiment, as the gear switch moves, the S pole of the magnet gradually approaches the silkscreen surface of the Hall switch. In this embodiment, the unipolar Hall switch is AH3144 as an example.

[0079] Please refer to Figure 4 The diagram below is a circuit structure diagram of a highly effective electromagnetic induction switch provided in an embodiment of the present invention.

[0080] In this embodiment, PIN1 is the switch input terminal (connected to power supply), and PIN2 is the switch output terminal. These two PINs are equivalent to the two contacts of a mechanical contact switch; PIN3 is the working ground terminal. The "Hall" in the structural diagram refers to a unipolar Hall switch. This embodiment uses AH3144 as an example. When the S pole of a magnet is close to the silkscreen surface of the Hall switch (e.g....), Figure 3 (Illustrative image) The Hall switch outputs a low level at its OUT pin; otherwise, it outputs an open circuit. When the gear shift switch is actually closed, the gear shift switch pushes the magnet's S pole close to the Hall switch's silkscreen surface, causing the OUT pin to output a low level. At this time, a voltage difference will be generated between VGS and S of the PMOS transistor (the S pole potential is higher than the G pole potential), causing the S and D poles of the PMOS transistor to conduct, and current will flow from the S pole to the D pole. At this time, PIN1 to PIN2 of the entire inductive switch will form a current loop, and other systems in the vehicle can acquire a high-level signal from the electromagnetic switch's PIN2 pin, completing the high-effectiveness switch signal acquisition link.

[0081] Please refer to Figure 5 The diagram below is a schematic diagram of a low-efficiency electromagnetic induction switch provided in an embodiment of the present invention.

[0082] In this embodiment, PIN1 is the switch input terminal (connected to power supply), and PIN2 is the switch output terminal. These two pins are equivalent to the two contacts of a mechanical contact switch; PIN3 is the working ground terminal. The "Hall" in the schematic diagram refers to a unipolar Hall switch. This embodiment uses AH3144 as an example. When the S pole of a magnet is close to the silkscreen surface of the Hall switch (e.g....),... Figure 3 (Illustrative image) The Hall switch outputs a low level at its OUT pin; otherwise, it outputs an open-drain state. When the actual gear shift switch is closed, the gear shift switch pushes the magnet's S pole close to the Hall switch's silkscreen surface, causing the OUT pin to output a low level. At this time, the B pole of the PNP transistor is low, and the E and C poles conduct to form a current loop. The VGS of the NMOS transistor will then generate a voltage difference (the G pole potential is higher than the S pole), causing the D pole and S pole of the NMOS transistor to conduct, and current flows from the D pole to the S pole. At this time, the entire inductive switch from PIN1 to PIN2 will form a current loop, and other vehicle systems can acquire a low-level ground signal from the electromagnetic switch's PIN2 pin, completing the low-active-level switch signal acquisition link.

[0083] In this embodiment, the electromagnetic induction gear switch used has no traditional mechanical contacts, which avoids problems such as contact breakage and foreign objects at the contacts, reducing after-sales failure rate and complaints. Simultaneously, a Hall effect switch is used to determine the gear position, resulting in fast reversal speed, strong consistency, and high reliability.

[0084] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention for those skilled in the art.

Claims

1. A method for gear position recognition based on an electromagnetic induction switch, characterized in that, Specifically, it includes; Based on the movement of the gear shift switch in the manual transmission, the electromagnetic induction switch in the manual transmission is activated. Before activating the electromagnetic induction switch, the vehicle's overall circuit design is used to determine whether the current vehicle circuit structure is a first or second acquisition circuit structure. The first acquisition circuit structure is one where the vehicle's circuit design requires the vehicle to acquire a high-level signal; the second acquisition circuit structure is one where the vehicle's circuit design requires the vehicle to acquire a low-level signal. Based on the determined circuit structure, the electromagnetic induction switch is configured for the vehicle. If the determined circuit structure is the first acquisition circuit structure, a high-level electromagnetic induction switch is configured for the vehicle; if the circuit structure is the second acquisition circuit structure, a low-level electromagnetic induction switch is selected. The high-level electromagnetic induction switch outputs a 24V high-level signal when the gear shift switch is closed; the low-level electromagnetic induction switch outputs a 0V ground low-level signal when the gear shift switch is closed. According to the movement of the gear switch, the magnet in the gearbox is gradually brought closer to the electromagnetic induction switch, so that the Hall switch in the electromagnetic induction switch forms a level, and according to the level, a first level signal is output in the electromagnetic induction switch; wherein, according to the movement of the gear switch, the magnet is continuously brought closer to the Hall switch in the electromagnetic induction switch, so that the Hall switch in the electromagnetic induction switch outputs a low level signal; the first level signal is the low level signal; Based on the first level signal, a current loop is formed through the field-effect transistor (FET) in the electromagnetic induction switch, and a second level signal is output. Specifically, if the electromagnetic induction switch is a high-activity electromagnetic induction switch, a voltage difference is generated in the FET based on the first level signal, causing current to flow through the two terminals of the FET. Based on this current, a current loop is formed between the input and output terminals of the electromagnetic induction switch. Based on this current loop, a high-level signal is output from the output terminal of the electromagnetic induction switch. If the electromagnetic induction switch is a low-activity electromagnetic induction switch, a low-level signal is output from one end of the transistor in the low-activity electromagnetic induction switch based on the first level signal, and a current loop is formed between the other two ends. Based on this current loop, a voltage difference is generated through the FET in the low-activity electromagnetic induction switch, causing a voltage difference in the FET, which in turn causes current to flow through its terminals. Based on this current, a current loop is formed between the input and output terminals of the electromagnetic induction switch. Based on this current loop, a low-level signal is output from the output terminal of the electromagnetic induction switch. Based on the second level signal output by the electromagnetic induction switch, it is determined that the gear position switch is closed, so that other systems connected to the gear position switch can obtain the current gear of the manual transmission.

2. A gear position recognition device based on an electromagnetic induction switch, characterized in that, It includes a startup module, a sensing module, an output module, and a recognition module; The starting module is used to activate the electromagnetic induction switch in the manual transmission according to the movement of the gear shift switch. The starting module includes a judgment unit and a matching unit. The judgment unit is used to determine, based on the vehicle's overall circuit design, whether the current vehicle's circuit structure is a first acquisition circuit structure or a second acquisition circuit structure. The first acquisition circuit structure is a circuit structure required by the vehicle's overall circuit design to acquire a high-level signal; the second acquisition circuit structure is a circuit structure required by the vehicle's overall circuit design to acquire a low-level signal. Based on the determined circuit structure, the electromagnetic induction switch is configured for the vehicle. The matching unit is used to configure a high-level electromagnetic induction switch for the vehicle if the determined circuit structure is the first acquisition circuit structure; if the circuit structure is the second acquisition circuit structure, a low-level electromagnetic induction switch is selected. The high-level electromagnetic induction switch outputs a 24V high-level signal when the gear shift switch is closed; the low-level electromagnetic induction switch outputs a 0V ground low-level signal when the gear shift switch is closed. The sensing module is used to gradually bring a magnet in the gearbox closer to the electromagnetic induction switch according to the movement of the gear switch, so that the Hall switch in the electromagnetic induction switch forms a level, and outputs a first level signal in the electromagnetic induction switch according to the level; wherein, according to the movement of the gear switch, the magnet continuously approaches the Hall switch in the electromagnetic induction switch, so that the Hall switch in the electromagnetic induction switch outputs a low level signal; the first level signal is the low level signal; The output module is used to output a second level signal based on the first level signal, forming a current loop through the field-effect transistor in the electromagnetic induction switch; wherein, the output module includes a low-level output unit and a high-level output unit; the high-level output unit is used to generate a voltage difference in the field-effect transistor in the high-efficiency electromagnetic induction switch according to the first level signal when the electromagnetic induction switch is a high-efficiency electromagnetic induction switch, thereby generating a current between the two terminals of the field-effect transistor; based on the current, the input and output terminals of the electromagnetic induction switch form a current loop; based on the current loop, the output terminal of the electromagnetic induction switch outputs a high-level signal. The low-level output unit is used to output a low-level signal through one end of a transistor in the low-active-mode electromagnetic induction switch when the electromagnetic induction switch is a low-active-mode electromagnetic induction switch, based on the first level signal, and to form a current loop at the other two ends; based on the current loop, the voltage difference formed by the field-effect transistor in the low-active-mode electromagnetic induction switch causes the field-effect transistor to form a voltage difference, thereby causing a current to form across the field-effect transistor; based on the current, the input and output ends of the electromagnetic induction switch form a current loop; based on the current loop, the output end of the electromagnetic induction switch outputs a low-level signal; The identification module is used to determine that the gear position switch is closed based on the second level signal output by the electromagnetic induction switch, so that other systems connected to the gear position switch can obtain the current gear of the manual transmission.

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