Trigger force feedback device, method, trigger and handle

Abstract

The present invention discloses a trigger force feedback device, method, trigger and handle, the trigger force feedback device comprises: a magnetic part, arranged on the trigger button, the magnetic part moves between a first position and a second position under the drive of the trigger button; an electric control board, arranged in the trigger; an induction coil, arranged on the electric control board, the induction coil is used to sense the induced current generated when the magnetic part moves between the first position and the second position; a current detection control circuit, arranged on the electric control board, and arranged in series with the induction coil; a current detection control circuit, which is used to determine the current user action intention according to the induced current and the current application scenario, and adjust the current parameters flowing through the induction coil according to the current user action intention to generate corresponding force feedback information. The present invention can realize the trigger to perform corresponding force feedback according to the application scenario.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent game devices, and in particular to a trigger force feedback device, method, trigger and handle. Background Art

[0002] At present, most of the trigger buttons on the human-computer interaction devices on the market, such as game controllers and VR controllers, do not have force feedback function. The force applied by the trigger button to the user's hand is usually a simple spring force, and the specific force value cannot be set according to the specific game / usage scenario. It is impossible to achieve the effect of closely combining the feel with the game / usage scenario, and the user experience is monotonous. Summary of the invention

[0003] The main purpose of the present invention is to provide a trigger force feedback device, method, trigger and handle, aiming to achieve corresponding force feedback of the trigger according to the application scenario.

[0004] To achieve the above object, the present invention provides a trigger force feedback device, which is applied to a trigger, wherein the trigger includes a trigger rotation axis and a trigger button rotatable relative to the trigger rotation axis, and the trigger force feedback device includes:

[0005] A magnetic member is disposed on the trigger button, and driven by the trigger button, the magnetic member moves between a first position and a second position;

[0006] An electric control panel, disposed inside the trigger;

[0007] an induction coil, disposed on the electric control board, and used for sensing an induced current generated when the magnetic member moves between the first position and the second position;

[0008] A current detection control circuit is arranged on the electric control board and is arranged in series with the induction coil; the current detection control circuit is used to determine the current user action intention according to the induced current and the current application scenario, and adjust the current parameters flowing through the induction coil according to the current user action intention to generate corresponding force feedback information.

[0009] Optionally, the current detection control circuit is specifically used to increase the current flowing through the induction coil when it is determined that the current user action intention is to press the trigger, so as to feedback the repulsive force to the trigger button through the magnetic member.

[0010] Optionally, the current detection control circuit is specifically used to increase the current flowing through the induction coil when it is determined that the current user action intention is to release the trigger, so as to feedback the attractive force to the trigger button through the magnetic member.

[0011] Optionally, the current detection control circuit is specifically used to adjust the magnitude and direction of the current flowing through the induction coil when it is determined that the current user action intention is to pull the trigger, so as to feedback the shaking force to the trigger button through the magnetic member.

[0012] Optionally, the current detection control circuit includes:

[0013] A current detection circuit and a current control circuit are arranged in series with the induction coil, and the current detection circuit is used to detect the induced current;

[0014] A main controller is connected to the current detection circuit and the current control circuit respectively. The main controller is used to output a corresponding control signal to the current control circuit according to the size and change rate of the induced current to adjust the current parameters flowing through the induction coil.

[0015] Optionally, the current control circuit includes a power supply and a switch device, the controlled ends of the power supply and the switch device are respectively connected to the main controller, and the power supply and the switch device are arranged in series at both ends of the induction coil; wherein,

[0016] The main controller is also used to control the power supply to superimpose a corresponding current on the induction coil; and

[0017] The conduction degree of the switch device is controlled to adjust the magnitude of the current flowing through the induction coil.

[0018] The present invention further provides a trigger, comprising a trigger button, a trigger shaft spring and the trigger force feedback device as described above; wherein:

[0019] The trigger button is rotatably connected to the trigger rotation axis;

[0020] The trigger button drives the magnetic component of the trigger force feedback device to move between a first position and a second position relative to the induction coil of the trigger force feedback device.

[0021] The present invention further provides a handle, comprising the trigger force feedback device as described above; and / or,

[0022] Includes trigger as described above.

[0023] The present invention further provides a trigger force feedback method, which is applied to a trigger, wherein the trigger includes a trigger rotation axis, a trigger button rotatable relative to the trigger rotation axis, a magnetic member disposed on the trigger, and an induction coil disposed opposite to the magnetic member. The trigger force feedback method includes the following steps:

[0024] acquiring an induced current generated when the induction coil moves between a first position and a second position;

[0025] Determining the current user action intention according to the induced current and the current application scenario;

[0026] According to the current user action intention, the current parameters flowing through the induction coil are adjusted to generate corresponding force feedback information.

[0027] Optionally, the step of adjusting the current parameter flowing through the induction coil according to the current user action intention to generate corresponding force feedback information specifically includes:

[0028] When it is determined that the current user action intention is to press the trigger, the magnitude of the current flowing through the induction coil is increased so as to feedback a repulsive force to the trigger button through the magnetic member;

[0029] When it is determined that the current user action intention is to release the trigger, the magnitude of the current flowing through the induction coil is increased so as to feedback the attraction force to the trigger button through the magnetic member; or,

[0030] When it is determined that the current user action intention is to pull the trigger, the magnitude and direction of the current flowing through the induction coil are adjusted to feedback the shaking force to the trigger button through the magnetic member.

[0031] The trigger force feedback device of the present invention arranges a magnetic part on the trigger button so that the magnetic part can move between the first position and the second position under the drive of the trigger button. The present invention is also provided with a current detection control circuit, which determines the current user action intention according to the induction current generated by the induction coil when the magnetic part moves between the first position and the second position and the current application scenario, and adjusts the current parameters flowing through the induction coil according to the current user action intention to generate corresponding force feedback information. The present invention connects a closed induction coil to the electric control board, replaces the existing general magnetic induction device trigger detection method, realizes the detection of the user's trigger operation, and can perform corresponding force feedback on the trigger, enriching the user's use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 It is a structural schematic diagram of an embodiment of a trigger force feedback device of the present invention applied to a trigger;

[0034] Figure 2 It is a schematic diagram of the circuit structure of an embodiment of the trigger force feedback device of the present invention;

[0035] Figure 3 It is a flow chart of an embodiment of a trigger force feedback method of the present invention.

[0036] Description of Figure Numbers:

[0037] Label name Label name 10 Magnetic parts 42 Current control circuit 20 Electric control panel 43 Main Controller 30 Induction coil 100 Trigger button 40 Current detection control circuit 200 Trigger rotation axis 41 Current detection circuit 300 Elastic parts

[0038] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0043] The present invention provides a trigger force feedback device, which is applied to a trigger. The trigger comprises a trigger rotation axis and a trigger button rotatable relative to the trigger rotation axis.

[0044] With the development of virtual reality technology and network technology, more and more users are beginning to pay attention to VR and game interactive products. As an important part of them, the handle directly affects the user's product experience. The trigger button on the handle can simulate some real-life operation modes, so it plays an important role in the application of the handle. Taking the VR handle as an example, the current mainstream VR handles mostly use magnetic parts and magnetic induction devices to detect the trigger action. Although this method can well detect the pressing action and pressing method of the trigger, it cannot provide a force feedback to the user, resulting in the user not being able to obtain a rich user experience. In response to the above shortcomings, the current game handle adopts the method of adding a rotor motor next to the trigger to give the trigger a force feedback by driving the gear to rotate. Although this method can achieve force feedback, it will also increase the complexity of the system and reduce the reliability of the trigger life to a certain extent.

[0045] In order to solve the above problems, the present invention proposes a trigger force feedback device, referring to Figure 1 and Figure 2 In one embodiment of the present invention, the trigger force feedback device comprises:

[0046] The magnetic member 10 is disposed on the trigger button 100. The magnetic member 10 moves between a first position and a second position under the drive of the trigger button 100.

[0047] An electric control panel 20 is disposed inside the trigger;

[0048] An induction coil 30 is disposed on the electric control board 20, and the induction coil 30 is used to sense an induced current generated when the magnetic member 10 moves between the first position and the second position;

[0049] The current detection control circuit 40 is arranged on the electric control board 20 and is arranged in series with the induction coil 30; the current detection control circuit 40 is used to determine the current user action intention according to the induced current and the current application scenario, and adjust the current parameters flowing through the induction coil 30 according to the current user action intention to generate corresponding force feedback information.

[0050] In this embodiment, the magnetic member 10 can be implemented by a permanent magnet, which is fixed inside the trigger button 100 and can rotate with the trigger button 100 around the trigger rotation axis 200, so as to move between a first position (position A) and a second position (position B), wherein position A and position B are two card positions of the trigger movement, respectively, and can control the trigger stroke. The two ends of the induction coil 30 are respectively fixed on the electric control board 20, forming a conductive loop with the current detection control circuit 40 on the electric control board 20; the electric control board 20 and the trigger rotation axis 200 are both fixed inside the handle or the trigger, and the permanent magnet can be driven to change its relative position with the induction coil 30 during the rotation of the trigger.

[0051] According to the principle of electromagnetic induction, the induction coil 30 and the current detection control circuit 40 on the electric control board 20 form a conductive loop. During the rotation of the trigger, when the magnetic member 10 follows the trigger to move between the first position and the second position, the relative position of the magnetic member 10 and the induction coil 30 changes, so that the magnetic flux in the closed induction coil 30 caused by the magnetic member 10 changes, and then an induced current and an induced magnetic field are generated, and the magnitude of the induced current is related to the magnetic field strength of the permanent magnet and the movement speed relative to the induction coil 30. In the present invention, the trigger drives the permanent magnet and the induction coil 30 to move relative to each other, and the magnetic flux of the induction coil 30 also changes accordingly, and then a changing induced current is generated. The current detection control circuit 40 on the electric control board 20 can detect different current changes and determine the movement mode of the magnetic member 10 (i.e., the user's trigger pressing action or trigger releasing action).

[0052] It is understandable that the trigger can be applied to a game controller, and the user interacts with the virtual character through the game controller, including direction, movement, walking, jumping, attacking, weapon firing and other actions can be completed through the trigger setting. The game scene is different, and the trigger button command triggered by the user when pressing the trigger or releasing the trigger is also different. For this reason, this embodiment realizes different trigger feedback experiences according to the game content or the current scene. When the magnetic part 10 moves in the direction close to the induction coil 30, an induced current will be generated in the induction coil 30, thereby generating an induced magnetic field, which prevents the magnetic part 10 from approaching the induction coil 30. For the user, the trigger will resist the force of the user's finger pressing, thereby providing force feedback to the user. When the magnetic part 10 moves away from the induction coil 30, an induced current will also be generated in the induction coil 30, thereby generating an induced magnetic field, which prevents the magnetic part 10 from leaving the induction coil 30. For the user, the trigger will be released slowly, thereby providing force feedback to the user. For different application scenarios, users need to obtain different degrees of force feedback, and then require different strengths of magnetic fields to be generated in the induction coil 30. Therefore, the induced current in the induction coil 30 alone may not be able to generate a magnetic field with a sufficiently large or small strength. To this end, the current detection control circuit 40 in this embodiment detects the current flowing through the induction coil 30 under the current game content or the current scene. When the user presses or releases the trigger, the speed of the trigger pressing action and the pressing force and other parameters are determined by detecting the magnitude and change rate of the current, and then the user's action intention is determined: pressing the trigger or releasing the trigger). Combined with the actual use scenario of the handle at this time, the current size in the induction coil 30 is adjusted, thereby changing the magnetic field strength and even the direction of the magnetic field in the induction coil 30. The trigger can provide the user with a corresponding feedback force according to the force of the user's operation of the trigger, that is, it can enhance the force feedback generated by the relative distance between the induction coil 30 and the magnetic part 10 to the user, and complete the feedback of the corresponding force. In this way, the current detection control circuit 40 can obtain and provide the feedback force required by the use scenario in real time.

[0053] The trigger force feedback device of the present invention sets the magnetic member 10 on the trigger button 100, so that the magnetic member 10 can move between the first position and the second position driven by the trigger button 100. The present invention is also provided with a current detection control circuit 40, which determines the current user action intention according to the induction current generated by the induction coil 30 when the magnetic member 10 moves between the first position and the second position and the current application scenario, and adjusts the current parameters flowing through the induction coil 30 according to the current user action intention to generate corresponding force feedback information. The present invention connects the closed induction coil 30 to the electric control board 20, replaces the existing general magnetic induction device trigger detection method, realizes the detection of the user's trigger operation, and can perform corresponding force feedback on the trigger, enriching the user's use experience.

[0054] Reference Figure 1 and Figure 2 In one embodiment, the current detection control circuit 40 is specifically used to increase the current flowing through the induction coil 30 when it is determined that the current user action intention is to press the trigger, so as to feedback the repulsive force to the trigger button 100 through the magnetic member 10.

[0055] In this embodiment, an induced current I1 and a magnetic field that repels the magnetic poles of the permanent magnet are generated in the induction coil 30, thereby hindering the trigger pressing action. At this time, it can be determined that the user's action intention is to press the trigger. According to the current application scenario, for example, the game scenario is that the game character pulls the trigger of a weapon (such as a pistol), the current detection control circuit 40 determines that it is necessary to provide a greater feedback force to the user according to the application scenario and the current magnitude and current direction, and then increases the current magnitude of the induction coil 30. And the superimposed current I2 output by the current detection control circuit 40 is a variable value, and its magnitude can be adjusted according to the application scenario. For example, the magnitude of the current superimposed output to the current loop of the induction coil 30 is I2, then the total current I in the induction coil 30 is I1+I2, so that a repulsive magnetic field with a greater magnetic field strength is generated in the induction coil 30. At this time, the permanent magnet will generate a force opposite to the direction of the trigger movement under the action of the magnetic field, so that the user feels the opposite repulsive force, thereby increasing the feedback force of the user's pressing.

[0056] Reference Figure 1 and Figure 2 In one embodiment, the current detection control circuit 40 is specifically used to increase the current flowing through the induction coil 30 when it is determined that the current user action intention is to release the trigger, so as to feedback the attractive force to the trigger button 100 through the magnetic member 10.

[0057] In this embodiment, an induced current Ia and a magnetic field that attracts the magnetic poles of the permanent magnet are generated in the induction coil 30, thereby hindering the trigger release action. At this time, it can be determined that the user's action intention is to release the trigger, and the trigger release action needs to be slowed down. According to the current application scenario, for example, the game scenario is that the game character releases the heavy machinery trigger. The current detection control circuit 40 determines that it is necessary to provide a greater feedback force to the user according to the application scenario and the current magnitude and current direction. Then, the current magnitude of the induction coil 30 is increased, and the superimposed current Ib output by the current detection control circuit 40 is a variable value, and its magnitude can be adjusted according to the application scenario. For example, the magnitude of the current superimposed and output to the current loop of the induction coil 30 is Ib, then the total current Ic in the induction coil 30 is Ia+Ib, so that a magnetic field with a greater magnetic field strength is generated in the induction coil 30. At this time, the permanent magnet will generate a force opposite to the direction of the trigger movement under the action of the magnetic field, so that the user feels the opposite suction force, thereby weakening the rebound of the trigger and generating corresponding force feedback to the user.

[0058] Reference Figure 1 and Figure 2 In one embodiment, the current detection control circuit 40 is specifically used to adjust the magnitude and direction of the current flowing through the induction coil 30 when it is determined that the current user action intention is to pull the trigger, so as to feedback the shaking force to the trigger button 100 through the magnetic member 10.

[0059] In this embodiment, an induced current and a magnetic field that repels the magnetic poles of the permanent magnet are generated in the induction coil 30, thereby hindering the trigger pressing action. At this time, it can be determined that the user's action intention is to press the trigger. According to the current application scenario, for example, the game scenario is that the game character performs the machine gun trigger pulling action. The current detection control circuit 40 determines that the trigger needs to shake continuously after the user presses the trigger according to the application scenario and the current magnitude and current direction, and needs to give the user a real force feedback. The magnitude and direction of the current in the induction coil 30 are changed at a certain frequency, so that the polarity (repulsion and attraction) of the induced magnetic field in the induction coil 30 and the magnitude of the magnetic field are constantly changing. At this time, the permanent magnet will generate repeatedly changing repulsive and attractive forces under the action of the magnetic field, thereby causing the trigger to shake, so that the user can feel the shaking feedback force. In this process, the current detection control circuit 40 monitors the magnitude of the current flowing through the induction coil 30 in real time, and performs closed-loop adjustment on the current in the induction coil 30.

[0060] Reference Figure 1 and Figure 2 In one embodiment, the current detection control circuit 40 includes:

[0061] A current detection circuit 41 and a current control circuit 42 are connected in series to the induction coil 30, and the current detection circuit 41 is used to detect the induced current;

[0062] The main controller 43 is connected to the current detection circuit 41 and the current control circuit 42 respectively. The main controller 43 is used to output a corresponding control signal to the current control circuit 42 according to the size and change rate of the induced current to adjust the current parameters flowing through the induction coil 30.

[0063] In this embodiment, the main controller 43 can be implemented by a microprocessor such as a single chip microcomputer, DSP, FPGA, etc. The main controller 43 can be the control center of the handle, and various interfaces and lines are used to connect the various parts of the entire handle. By running or executing software programs and / or modules stored in the memory, and calling data stored in the memory, the various functions of the handle are executed and data are processed, thereby monitoring the handle as a whole. The main controller 43 may include one or more processing units; the main controller 43 may integrate an application processor, and the application processor mainly processes the operating system, user interface, and application program, etc. The current detection circuit 41 can be implemented by a circuit composed of discrete devices such as resistors, or by a special current detection device. The current detection circuit 41, the current control circuit 42, and the induction coil 30 can form a current closed loop. The current detection circuit 41 can detect the size and direction of the induced current and feed it back to the main controller 43. The main controller 43 can determine the user's current action intention based on the size and direction of the induced current and the current application scenario, and then output a corresponding control signal to control the current control circuit 42 to output a current of corresponding direction and size, and superimpose the current on the induced current to adjust the direction and size of the current on the induction coil 30, thereby generating corresponding force feedback to the user to hinder the trigger from being pressed or released.

[0064] Reference Figure 1 and Figure 2 In one embodiment, the current control circuit 42 includes a power supply and a switch device, the controlled ends of the power supply and the switch device are respectively connected to the main controller 43, and the power supply and the switch device are arranged in series at both ends of the induction coil 30; wherein,

[0065] The main controller 43 is also used to control the power supply to superimpose a corresponding current on the induction coil 30; and

[0066] The conduction degree of the switch device is controlled to adjust the magnitude of the current flowing through the induction coil 30 .

[0067] In this embodiment, when the user presses or releases the trigger, an induced current will be generated in the induction coil 30, and the current detection circuit 41 in the circuit will detect the current change in the induction coil 30 and send a signal to the main controller 43 module. The main controller 43 determines the speed and pressing force of the trigger pressing action by detecting the magnitude and change rate of the current. In combination with the actual application scenario of the handle at this time, the power supply is controlled to provide a current in a corresponding direction, and the conduction degree of the switch device is controlled to adjust the magnitude of the current obtained in the induction coil 30, thereby changing the magnetic field strength and / or magnetic field direction in the induction coil 30, and then feedback the magnitude of the pressing and releasing force of the trigger to the user.

[0068] The invention also provides a trigger.

[0069] Reference Figure 1 and Figure 2 The trigger includes a trigger button 100, a trigger shaft spring and the trigger force feedback device as described above. The detailed structure of the trigger force feedback device can refer to the above embodiment, which will not be described in detail here; it can be understood that since the above trigger force feedback device is used in the trigger of the present invention, the embodiment of the trigger of the present invention includes all technical solutions of all embodiments of the above trigger force feedback device, and the technical effects achieved are also exactly the same, which will not be described in detail here.

[0070] The trigger button 100 is rotatably connected to the trigger rotation axis 200;

[0071] The trigger button 100 drives the magnetic member 10 of the trigger force feedback device to move between a first position and a second position relative to the induction coil 30 of the trigger force feedback device.

[0072] In this embodiment, the electric control board 20 and the trigger rotating shaft 200 are fixed inside the handle or the trigger, and the permanent magnet can be driven to change its relative position with the induction coil 30 during the rotation of the trigger. In the process of using the trigger, the user presses the trigger or releases the trigger, and the permanent magnet can follow the trigger button 100 to rotate around the trigger rotating shaft 200, so as to move between the first position (position A) and the second position (position B), for example, from the first position to the second position, at this time, the magnetic part 10 and the coil are close to each other, and the two generate a repulsive magnetic field. When moving from the second position to the first position, the magnetic part 10 and the coil are far away from each other, and the two generate an attractive magnetic field. Among them, position A and position B are two card positions of the trigger movement, which can control the trigger stroke. In some embodiments, the trigger is also provided with an elastic member 300, such as a spring. The elastic member 300 is located between the trigger and the inner shell of the handle, and can provide an auxiliary rebound force to the trigger button. The elastic force of the elastic member 300, the repulsive feedback force or the attractive feedback force between the induction coil 30 and the magnetic member 10 work together to enable the trigger to provide feedback force to the user, thereby increasing the feedback force of the trigger. It can be applied to game scenarios such as heavy firearms, marching, jumping, attacking, and releasing skills to provide corresponding feedback force.

[0073] The present invention also provides a handle, comprising the trigger force feedback device as described above; and / or, comprising the trigger as described above.

[0074] The detailed structure of the trigger force feedback device and the trigger can refer to the above-mentioned embodiments, which will not be described in detail here; it can be understood that since the above-mentioned trigger force feedback device and the trigger are used in the electrical equipment of the present invention, the embodiments of the electrical equipment of the present invention include all technical solutions of all embodiments of the above-mentioned trigger force feedback device and the trigger, and the technical effects achieved are also exactly the same, which will not be described in detail here.

[0075] The present invention also proposes a trigger force feedback method, which is applied to a trigger, wherein the trigger includes a trigger rotation axis, a trigger button rotatable relative to the trigger rotation axis, a magnetic member arranged on the trigger, and an induction coil arranged opposite to the magnetic member.

[0076] Reference Figure 3 , the trigger force feedback method includes the following steps:

[0077] Step S100, obtaining an induced current generated when the induction coil moves between a first position and a second position;

[0078] In this embodiment, the magnetic member can be implemented by a permanent magnet, which is fixed inside the trigger button and can rotate with the trigger button around the trigger rotation axis, thereby moving between a first position (position A) and a second position (position B), where position A and position B are two card positions for the trigger movement, respectively, and can control the trigger travel. The two ends of the induction coil are respectively fixed on the electric control board to form a conductive loop with the electric control board; the electric control board and the trigger rotation axis are both fixed inside the handle or the trigger, and the permanent magnet can be driven to change its relative position with the induction coil during the rotation of the trigger.

[0079] According to the principle of electromagnetic induction, the induction coil and the electric control board form a conductive loop. During the rotation of the trigger, when the magnetic part follows the trigger to move between the first position and the second position, the relative position of the magnetic part and the induction coil changes, so that the magnetic flux in the closed induction coil caused by the magnetic part changes, thereby generating an induced current and an induced magnetic field. The magnitude of the induced current is related to the magnetic field strength of the permanent magnet and the movement speed relative to the induction coil.

[0080] Step S200, determining the current user action intention according to the induced current and the current application scenario;

[0081] In an embodiment, the trigger drives the permanent magnet and the induction coil to move relative to each other, and the magnetic flux of the induction coil also changes accordingly, thereby generating a changing induced current. Different current changes can be detected to determine the movement mode of the magnetic part (i.e., the user's trigger pressing action or trigger releasing action).

[0082] Step S300: According to the current user action intention, adjust the current parameters flowing through the induction coil to generate corresponding force feedback information.

[0083] Specifically, when it is determined that the current user action intention is to press the trigger, the magnitude of the current flowing through the induction coil is increased so as to feedback a repulsive force to the trigger button through the magnetic member;

[0084] When it is determined that the current user action intention is to release the trigger, the magnitude of the current flowing through the induction coil is increased so as to feedback the attraction force to the trigger button through the magnetic member; or,

[0085] When it is determined that the current user action intention is to pull the trigger, the magnitude and direction of the current flowing through the induction coil are adjusted to feedback the shaking force to the trigger button through the magnetic member.

[0086] The trigger can be applied to a game controller, and the user interacts with the virtual character through the game controller, including direction, movement, walking, jumping, attacking, weapon firing and other actions can be completed through the trigger setting. The game scene is different, and the trigger button command triggered by the user when pressing the trigger or releasing the trigger is also different. For this reason, this embodiment realizes different trigger feedback experiences according to the game content or the current scene. When the magnetic part moves in the direction of the induction coil, an induced current will be generated in the induction coil, thereby generating an induced magnetic field, which prevents the magnetic part from approaching the induction coil. For the user, the trigger will resist the force of the user's finger pressing, thereby providing force feedback to the user. When the magnetic part moves away from the induction coil, an induced current will also be generated in the induction coil, thereby generating an induced magnetic field, which prevents the magnetic part from leaving the induction coil. For the user, the trigger will be released slowly, thereby providing force feedback to the user. For different application scenarios, the user needs to obtain different degrees of force feedback, and then requires different strengths of magnetic fields to be generated in the induction coil. Therefore, the induced current in the induction coil alone may not be able to generate a magnetic field with a large enough or small enough strength. To this end, this embodiment detects the magnitude of the current flowing through the induction coil under the current game content or the current scene. When the user presses or releases the trigger, the magnitude of the current and the rate of change are detected to determine the speed of the trigger pressing action and the parameters such as the pressing force, so as to determine the user's action intention: pressing the trigger action or releasing the trigger action), and in combination with the actual use scenario of the handle at this time, the magnitude of the current obtained in the induction coil is adjusted, thereby changing the magnetic field strength and even the magnetic field direction in the induction coil, and then changing the magnitude of the force required for pressing the trigger, giving the user a force feedback greater than the force generated by the relative distance between the induction coil and the magnetic part. Such a setting makes it possible to obtain and provide the feedback force required by the use scenario in real time. The present invention can determine the user's current action intention according to the magnitude and direction of the induced current and the current of the corresponding direction and magnitude, and superimpose the current on the induced current to adjust the direction and magnitude of the current on the induction coil, thereby generating corresponding force feedback to the user that hinders the trigger from being pressed or released.

[0087] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A trigger force feedback device, applied to a trigger, wherein the trigger comprises a trigger rotation axis and a trigger button rotatable relative to the trigger rotation axis, characterized in that: The trigger force feedback device comprises: A magnetic member is disposed on the trigger button, and driven by the trigger button, the magnetic member moves between a first position and a second position; An electric control panel, disposed inside the trigger; an induction coil, disposed on the electric control board, and used for sensing an induced current generated when the magnetic member moves between the first position and the second position; a current detection control circuit, which is arranged on the electric control board and is arranged in series with the induction coil; the current detection control circuit is used to detect the magnitude and change rate of the induced current flowing through the induction coil in the current application scenario, and determine the current user action intention according to the magnitude and change rate of the induced current and the current application scenario, and adjust the current parameters flowing through the induction coil according to the current user action intention to generate corresponding force feedback information; The current detection control circuit comprises: A current detection circuit and a current control circuit are arranged in series with the induction coil, and the current detection circuit is used to detect the induced current; A main controller is connected to the current detection circuit and the current control circuit respectively. The main controller is used to output a corresponding control signal to the current control circuit according to the size and change rate of the induced current to adjust the current parameters flowing through the induction coil.

2. The trigger force feedback device according to claim 1, characterized in that: The current detection control circuit is specifically used to increase the current flowing through the induction coil when it is determined that the current user action intention is to press the trigger, so as to feedback the repulsive force to the trigger button through the magnetic member.

3. The trigger force feedback device according to claim 1, characterized in that: The current detection control circuit is specifically used to increase the current flowing through the induction coil when it is determined that the current user action intention is to release the trigger, so as to feedback the attraction force to the trigger button through the magnetic member.

4. The trigger force feedback device according to claim 1, characterized in that: The current detection control circuit is specifically used to adjust the magnitude and direction of the current flowing through the induction coil when it is determined that the current user action intention is to pull the trigger, so as to feedback the shaking force to the trigger button through the magnetic member.

5. The trigger force feedback device according to claim 1, characterized in that: The current control circuit includes a power supply and a switch device, the controlled ends of the power supply and the switch device are respectively connected to the main controller, and the power supply and the switch device are arranged in series at both ends of the induction coil; wherein, The main controller is also used to control the power supply to superimpose a corresponding current on the induction coil; and The conduction degree of the switch device is controlled to adjust the magnitude of the current flowing through the induction coil.

6. A trigger, characterized in that: It comprises a trigger button, a trigger shaft spring and a trigger force feedback device as claimed in any one of claims 1 to 5; wherein, The trigger button is rotatably connected to the trigger rotation axis; The trigger button drives the magnetic component of the trigger force feedback device to move between a first position and a second position relative to the induction coil of the trigger force feedback device.

7. A handle, characterized in that: comprising the trigger force feedback device according to any one of claims 1 to 5; and / or, Comprising a trigger as claimed in claim 6.

8. A trigger force feedback method, applied to a trigger, wherein the trigger is the trigger as claimed in claim 6, the trigger comprising a trigger rotation axis, a trigger button rotatable relative to the trigger rotation axis, a magnetic member disposed on the trigger, and an induction coil disposed opposite to the magnetic member, wherein: The trigger force feedback method comprises the following steps: Obtaining the magnitude and change rate of the induced current generated when the induction coil moves between the first position and the second position; Determine the current user action intention according to the magnitude and change rate of the induced current and the current application scenario; According to the current user action intention, the current parameters flowing through the induction coil are adjusted to generate corresponding force feedback information.

9. The trigger force feedback method according to claim 8, characterized in that: The step of adjusting the current parameter flowing through the induction coil according to the current user action intention to generate corresponding force feedback information specifically includes: When it is determined that the current user action intention is to press the trigger, the magnitude of the current flowing through the induction coil is increased so as to feedback a repulsive force to the trigger button through the magnetic member; When it is determined that the current user action intention is to release the trigger, the magnitude of the current flowing through the induction coil is increased so as to feedback the attraction force to the trigger button through the magnetic member; or, When it is determined that the current user action intention is to pull the trigger, the magnitude and direction of the current flowing through the induction coil are adjusted to feedback the shaking force to the trigger button through the magnetic member.

Images