Trunk intelligent opening and closing method and device based on projection atmosphere lamp and action induction

Abstract

The invention provides a trunk intelligent opening and closing method and device based on a projection atmosphere lamp and action induction. According to the method disclosed by the invention, the opening and closing of the trunk are controlled by identifying the footstep actions of people. The circuit system is mainly composed of a microcontroller, a wireless identification module, a projection atmosphere lamp module and antenna sensors arranged in a matrix. When a user carries a key near the wireless identification module, the microcontroller enters a pre-opening state, and the microcontroller controls the projection atmosphere lamp module to project a dynamic pattern for sliding unlocking on the ground in the pre-opening state. Meanwhile, an antenna sensor is driven to collect parameters regularly, pattern recognition is conducted through a footstep action recognition algorithm, the three states of object existence, left sliding and right sliding can be recognized, and opening and closing of the trunk are controlled according to the recognition result. The circuit system also has a self-defining function, can set animation effect pictures projected by the projection lamp, and can set trunk control operations corresponding to different actions.

Description

Technical Field

[0001] The present invention relates to the technical field related to automobile electronics, and in particular to a method and device for intelligently opening and closing a trunk based on projection atmosphere lights and motion sensing. Background Art

[0002] Ambient lighting technology was originally used to enhance the aesthetics and luxury of the interior of the car, achieving rich color changes through LED light sources and RGB color modes to enhance the driving experience. With the development of technology, ambient lighting has become dynamic, intelligent and customized. It can not only change color and brightness according to driving mode or user preference, but also link with other systems in the car to provide a more personalized driving experience.

[0003] Motion sensing technology detects and identifies human movements through various sensors such as optical sensors, infrared sensors, radars, etc., and can be controlled without contact. This technology has been widely used in smart homes, game control, health care and other fields, and provides a technical basis for realizing the intelligent opening and closing of the trunk.

[0004] The traditional way of opening and closing the trunk is not convenient in some cases, such as when holding objects or when the hands are inconvenient. How to intelligently open and close the trunk based on projection ambient light and motion sensing is an urgent problem to be solved in the current market. Summary of the invention

[0005] The purpose of the present invention is to solve at least one of the deficiencies of the prior art and to provide a method and device for intelligently opening and closing a trunk based on projection atmosphere lights and motion sensing.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] Specifically, a trunk intelligent opening and closing method based on projection atmosphere light and motion sensing is proposed, including the following:

[0008] Step 110, obtaining a trigger signal of the wireless identification module, and when receiving the trigger signal of the wireless identification module, the control circuit system enters a pre-start state and goes to step 120;

[0009] Step 120, control the projection atmosphere light module to project the first frame of the preset animation according to the preset projection scheme and go to step 130;

[0010] Step 130, identifying the current footstep action of the user through the antenna sensor module, if the current footstep action is the same as the associated trigger action of the first frame of preset animation, then go to step 140, if the current footstep action is different from the associated trigger action of the first frame of preset animation, then give an error reminder and repeat step 130;

[0011] Step 140, control the projection atmosphere light module to project the next frame of preset animation according to the preset projection scheme and go to step 130, if there is no next frame of preset animation, go to step 150;

[0012] Step 150, control the trunk to open, and at the same time control the circuit system to enter the pre-closing state and go to step 160;

[0013] Step 160: Determine whether there is any trunk closing event, and if so, control the trunk to close.

[0014] Further, specifically, the triggering method of the wireless identification module includes:

[0015] When any user carrying the paired key of the current vehicle stays within a first preset distance of the trunk for more than a first time period, the camera module captures an image to obtain a captured image, and performs face recognition on the captured image. If the face recognition is successful, the wireless recognition module sends a trigger signal.

[0016] Further, specifically, the antenna sensor module is used to identify the user's current footsteps, including:

[0017] The antenna sensor module includes 8 antenna sensors, which are arranged in 2 rows and 4 columns. The number of any antenna sensor is a ij , where i represents the row index and j represents the column index,

[0018] The recognition principle of the foot sliding to the right is as follows:

[0019] D R =a 11 (t1)×a 12 (t2)×a 13 (t3)×a 21 (t1)×a 22 (t2)×a 23 (t3)||a 12 (t1)×a 13 (t2)×a 14 (t3)×a 22 (t1)×a 23 (t2)×a 24 (t3)(a)

[0020] The recognition principle of sliding left is as follows:

[0021] D L =a 13 (t1)×a 12 (t2)×a11(t3)×a 23 (t1)×a 22 (t2)×a21 (t3)||a 14 (t1)×a 13 (t2)×a 12 (t3)×a 24 (t1)×a 23 (t2)×a 22 (t3)(b)

[0022] where a ij (t m ) is the level value fed back by the antenna sensor at the i-th row and j-th column sampled for the m-th time, and the sampling frequency is 5 Hz.

[0023] When D R is 1 and D L When D is 0, it is judged as sliding to the right; L is 1 and D R When D is 0, it is judged as sliding to the left; R is l and D L When it is 1, the signal is collected again and recognized.

[0024] Further, specifically, the trunk closing event includes,

[0025] The first item is when any user carrying the paired key of the current vehicle stays outside the first preset distance of the trunk for more than a second time period;

[0026] The second item is that the user presses a preset button in the current vehicle;

[0027] The third item is to use the antenna sensor module to recognize the user’s footsteps when they complete the projector shutdown process.

[0028] Further, specifically, the user completes the step recognition of closing the projection scheme, including:

[0029] The preset projection scheme in step 120 is replaced with the projection closing scheme, and steps 120 to 140 are repeated. In step 140, if there is no next frame of preset animation, the trunk is closed.

[0030] Further, specifically, the projection atmosphere light module is implemented based on DLP (Digital Light Processing) technology, and projects an image frame on the ground. A preset projection scheme is played in the image frame. The preset projection scheme is used to guide the user to make an instruction action to open or close the trunk.

[0031] The present invention also proposes a trunk intelligent switch device based on projection atmosphere light and motion sensing, which applies the above-mentioned trunk intelligent switch method based on projection atmosphere light and motion sensing. The device includes the following:

[0032] The power management module includes a DC-DC chip, two feedback resistors, a diode, and a filter capacitor, which is used to convert the vehicle's 12V power supply into a 3.3V power supply to power the entire device;

[0033] A wireless identification module, used to determine whether the user with pre-recorded identity information is staying in the trunk based on the key;

[0034] Antenna sensor module, used to identify the user's footsteps;

[0035] Projection atmosphere light module, used for animation projection according to preset projection scheme;

[0036] The control module is electrically connected to the power management module, the wireless identification module, the antenna sensor module and the projection atmosphere light module.

[0037] Further, specifically, the working mode of the wireless identification module is:

[0038] When any user carrying the paired key of the current vehicle stays within a first preset distance of the trunk for more than a first time period, the camera module captures an image to obtain a captured image, and performs face recognition on the captured image. If the face recognition is successful, the wireless recognition module sends a trigger signal.

[0039] Further, specifically, the antenna sensor module is installed under the trunk of the car, and consists of 8 sensors, 4 sensors are arranged in each row, and the interval between every two sensors is 20 cm. There are 2 rows in total, and the interval between each row is 10 cm.

[0040] The beneficial effects of the present invention are:

[0041] The trunk intelligent switch method based on projection atmosphere light and motion sensing provided by the present invention combines the atmosphere light with the motion sensing technology, and controls the opening and closing of the trunk by identifying the footsteps of the person. The intelligent switch for the trunk can not only provide visual feedback, but also realize non-contact control through motion sensing. This system can automatically open the trunk when the user approaches the vehicle or makes a specific action, and at the same time provide visual prompts through the projection atmosphere light to enhance the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above and other features of the present disclosure will become more obvious by describing in detail the embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings of the present disclosure represent the same or similar output voltages. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure. For those skilled in the art, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0043] Figure 1 This is the structural principle diagram of the trunk intelligent switch device based on projection ambient light and motion sensing.

[0044] Figure 2 It is a schematic diagram of the operation flow of the trunk intelligent opening and closing method based on projection ambient light and motion sensing.

[0045] Figure 3 This is a schematic diagram of the function of the trunk intelligent switch device based on projection ambient light and motion sensing.

[0046] Figure 4 This is a structural schematic diagram of the projection atmosphere light module in the trunk intelligent switch device based on projection atmosphere light and motion sensing.

[0047] Figure 5 This is the layout diagram of the trunk when the trunk intelligent switch device based on projection ambient light and motion sensing is actually used. DETAILED DESCRIPTION

[0048] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0049] Reference Figure 2 , Embodiment 1, the present invention proposes a trunk intelligent opening and closing method based on projection atmosphere light and motion sensing, including the following,

[0050] Step 110, obtaining a trigger signal of the wireless identification module, and when receiving the trigger signal of the wireless identification module, the control circuit system enters a pre-start state and goes to step 120;

[0051] Step 120, control the projection atmosphere light module to project the first frame of the preset animation according to the preset projection scheme and go to step 130;

[0052] Step 130, identifying the current footstep action of the user through the antenna sensor module, if the current footstep action is the same as the associated trigger action of the first frame of preset animation, then go to step 140, if the current footstep action is different from the associated trigger action of the first frame of preset animation, then give an error reminder and repeat step 130;

[0053] Step 140, control the projection atmosphere light module to project the next frame of preset animation according to the preset projection scheme and go to step 130, if there is no next frame of preset animation, go to step 150;

[0054] Step 150, control the trunk to open, and at the same time control the circuit system to enter the pre-closing state and go to step 160;

[0055] Step 160: Determine whether there is any trunk closing event, and if so, control the trunk to close.

[0056] In this embodiment 1, the system enters the standby state after the car is parked. When the wireless identification module is triggered, a signal is sent to the MCU, and the MCU controls the circuit system to enter the pre-opening state. At this time, if the user carries the key away from the wireless identification module, the system enters the standby state again. In the pre-opening state, the MCU drives the projection atmosphere light module to project a dynamic pattern of sliding unlocking on the ground; the antenna sensor analyzes the user's footsteps, and the trunk automatically unlocks and rises after determining that the collected signal is information for opening the trunk. When the trunk is fully raised, the MCU control system enters the pre-closing state. In this state, the trunk can be closed by three methods: in-car button control, footsteps control, and key away. The trunk is controlled by the trunk control device.

[0057] As a preferred embodiment of the present invention, specifically, the triggering method of the wireless identification module includes:

[0058] When any user carrying the paired key of the current vehicle stays within a first preset distance of the trunk for more than a first time period, the camera module captures an image to obtain a captured image, and performs face recognition on the captured image. If the face recognition is successful, the wireless recognition module sends a trigger signal.

[0059] In this preferred embodiment, in order to prevent false triggering, the above method can provide double assurance, that is, confirming that the user is the user who entered the information and carries the key to ensure safety.

[0060] As a preferred embodiment of the present invention, specifically, identifying the current footsteps of the user through the antenna sensor module includes:

[0061] The antenna sensor module includes 8 antenna sensors, which are arranged in 2 rows and 4 columns. The number of any antenna sensor is a ij , where i represents the row index and j represents the column index,

[0062] The recognition principle of the foot sliding to the right is as follows:

[0063] D R =a 11 (t1)×a 12 (t2)×a 13 (t3)×a 21 (t1)×a 22 (t2)×a 23(t3)||a 12 (t1)×a 13 (t2)×a 14 (t3)×a 22 (t1)×a 23 (t2)×a 24 (t3)(a)

[0064] Among them, a ij (t m ) is the antenna sensor value of the i-th row and j-th column sampled for the mth time, and the sampling frequency is 5Hz. In order to avoid errors, the sensor module can only be considered to have recognized the rightward movement of the footsteps when the sensors in the first and second rows detect the movement of the footsteps at the same time. 11 (t1), a 12 (t2), a 13 (t3) represent sensor a 11 、a 12 、a 13 The detection level of the sensor at the first, second, and third sampling. When a person's footsteps move to the right, the position of the footsteps gradually moves to the right with the number of samplings, which can satisfy a 11 、a 12 、a 13 The levels detected at the first, second, and third sampling are all high levels. 11 (t1)×a 12 (t2)×a 13 The value of (t3) is 1. Similarly, a 21 (t1)×a 22 (t2)×a 23 The value of (t3) is also 1. In addition, in order to avoid the situation where the human body is relatively far to the right and a 11 and a 21 When the sensor cannot detect the position of a person's footsteps, formula (a) uses an OR operation. If one of the first, second and third column sensors or the second, third and fourth column sensors successfully detects the rightward movement of a person's footsteps, it can be considered that the sensor module recognizes the rightward movement of the footsteps.

[0065] The recognition principle of sliding left is as follows:

[0066] D L =a 13 (t1)×a 12 (t2)×a 11 (t3)×a 23 (t1)×a 22 (t2)×a 21 (t3)||a 14 (t1)×a 13 (t2)×a12 (t3)×a 24 (t1)×a 23 (t2)×a 22 (t3)(b)

[0067] where a ij (t m ) is the level value of the antenna sensor feedback in the i-th row and j-th column sampled for the mth time, and the sampling frequency is 5Hz. 13 (t1), a 12 (t2), a 11 (t3) represent sensor a 13 、a 12 、a 11 The detection level of the sensor at the first, second, and third sampling. When a person's footsteps move to the left, the position of the footsteps gradually moves to the left with the number of samplings, which can satisfy a 13 、a 12 、a 11 The levels detected at the first, second, and third sampling are all high levels. 13 (t1)×a 12 (t2)×a 11 The value of (t3) is 1. Similarly, a 23 (t1)×a 22 (t2)×a 21 The value of (t3) is also 1. In addition, in order to avoid the situation where the human body is relatively far to the right and a 11 and a 21 When the sensor cannot detect the position of human footsteps, formula (b) adopts an OR operation. If one of the sensors in the third column, the second column and the first column or the sensors in the fourth column, the third column and the second column successfully detects the leftward movement of human footsteps, it can be regarded as the sensor module recognizing the leftward movement of the footsteps.

[0068] When D R is 1 and D L When D is 0, it is judged as sliding to the right; L is 1 and D R When D is 0, it is judged as sliding to the left; R is 1 and D L When it is 1, the signal is collected again and recognized.

[0069] In this preferred embodiment, the antenna sensor group senses the human foot extending into the projection frame. When the antenna sensor module senses the sliding information of the human foot, it makes a judgment based on the above information data and sends a trunk opening or closing instruction to the trunk control device. Upon receiving the opening instruction, the trunk control device opens and raises the trunk; upon receiving the closing instruction, the trunk control device lowers and closes the trunk. Figure 5 As shown, Figure 5 1 to 8 are antenna sensors, 9 is the trunk lid, 10 is the support rod, and 11 is the inside of the trunk. The 8 antenna sensors are arranged in 2 rows and 4 columns to form a footstep motion sensor module. For easier explanation, sensors 1 to 8 are renumbered as a ij , where i represents the row index and j represents the column index. When an antenna sensor detects an object, the sensor sends a high level to the MCU, and outputs a low level when no object is detected. When a person's foot approaches any two antenna sensors that are not in the same row, the sensor module recognizes the presence of footsteps.

[0070] As a preferred embodiment of the present invention, specifically, the trunk closing event includes:

[0071] As a preferred embodiment of the present invention, when any user carrying the paired key of the current vehicle stays outside the first preset distance of the trunk for more than a second time period; the second time period here is slightly longer than the first time period setting. Considering that in actual application scenarios, it is often easier to judge when the user needs to open the trunk (there are fewer cases of misjudgment because people generally do not linger at the trunk when there is no need), and when the trunk needs to be closed after opening, there are often more interference scenarios (such as moving things, etc., which will cause the user to stay away from the trunk for a period of time). Therefore, the second time period needs to be set longer. Preferably, the first time period is set to 3 seconds and the second time period is set to 10 seconds. This is a better implementation method during testing.

[0072] The second item is that the user presses a preset button in the current vehicle;

[0073] The third item is to use the antenna sensor module to recognize the user’s footsteps when they complete the projector shutdown process.

[0074] Specifically, the user completes the step recognition of closing the projection solution, including:

[0075] The preset projection scheme in step 120 is replaced with the projection closing scheme, and steps 120 to 140 are repeated. In step 140, if there is no next frame of preset animation, the trunk is closed.

[0076] In this preferred embodiment, three trunk closing events are preset: one is when the distance between the key and the wireless identification module exceeds the limit and the time is greater than 10 seconds, the trunk automatically lowers and locks, and the projection pattern is turned off; the second is when the user presses the corresponding button in the car, the trunk lowers and locks; the third is when the user slides according to the instructions of the projected image, the trunk automatically lowers and locks. The above three methods can almost cope with most of the scenarios where users need to intelligently close the trunk.

[0077] As a preferred embodiment of the present invention, specifically, the projection atmosphere light module is implemented based on DLP (Digital Light Processing) technology, and projects an image frame on the ground. A preset projection scheme is played in the image frame, and the preset projection scheme is used to guide the user to make an instruction action to open or close the trunk.

[0078] In this preferred embodiment, when the wireless module detects that the current effective distance between the remote control key and the vehicle is less than 5 meters and the stay time exceeds 3 seconds, the rear of the vehicle is detected. When the moving object behind the vehicle is detected as a human body with recorded information, the projection atmosphere light module is turned on. Figure 3 and Figure 4 As shown in the figure, the projection atmosphere light module uses DLP (Digital Light Processing) technology to project an image frame on the ground. The frame contains a pre-set dynamic picture. Here is a sliding dotted line to guide the user to open or close the trunk. The projection atmosphere light module is installed in the middle of the antenna sensor matrix. The projection atmosphere light's instruction animation can be customized by the user through the Bluetooth transmission protocol.

[0079] Reference Figure 1 The present invention also proposes a trunk intelligent switch device based on projection atmosphere light and motion sensing, which applies the above-mentioned trunk intelligent switch method based on projection atmosphere light and motion sensing. The device includes the following:

[0080] The power management module includes a DC-DC chip, two feedback resistors, a diode, and a filter capacitor, which is used to convert the vehicle's 12V power supply into a 3.3V power supply to power the entire device;

[0081] A wireless identification module, used to determine whether the user with pre-recorded identity information is staying in the trunk based on the key;

[0082] Antenna sensor module, used to identify the user's footsteps;

[0083] Projection atmosphere light module, used for animation projection according to preset projection scheme;

[0084] The control module is electrically connected to the power management module, the wireless identification module, the antenna sensor module and the projection atmosphere light module.

[0085] As a preferred embodiment of the present invention, specifically, the working mode of the wireless identification module is:

[0086] When any user carrying the paired key of the current vehicle stays within a first preset distance of the trunk for more than a first time period, the camera module captures an image to obtain a captured image, and performs face recognition on the captured image. If the face recognition is successful, the wireless recognition module sends a trigger signal.

[0087] As a preferred embodiment of the present invention, specifically, the antenna sensor module is installed under the trunk of the car, and consists of 8 sensors, 4 sensors are arranged in each row, 20 cm between every two sensors, and 2 rows are arranged in total, with 10 cm between each row.

[0088] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

[0089] In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of software functional modules.

[0090] If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0091] Although the description of the present invention has been quite detailed and specifically describes several described embodiments, it is not intended to be limited to any of these details or embodiments or any particular embodiment, but should be regarded as providing a broad possible interpretation of these claims in view of the prior art by reference to the appended claims, thereby effectively covering the intended scope of the present invention. In addition, the above description of the present invention is based on the embodiments foreseeable by the inventor, and its purpose is to provide a useful description, and those non-substantial changes to the present invention that have not yet been foreseen may still represent equivalent changes to the present invention.

[0092] The above is only a preferred embodiment of the present invention. The present invention is not limited to the above implementation. As long as the technical effect of the present invention is achieved by the same means, it should belong to the protection scope of the present invention. Within the protection scope of the present invention, its technical scheme and / or implementation method can have various modifications and changes.

Claims

1. A trunk intelligent opening and closing method based on projection atmosphere light and motion sensing, characterized in that: Including the following, Step 110, obtaining a trigger signal of the wireless identification module, and when receiving the trigger signal of the wireless identification module, the control circuit system enters a pre-start state and goes to step 120; Step 120, control the projection atmosphere light module to project the first frame of the preset animation according to the preset projection scheme and go to step 130; Step 130, identifying the current footstep action of the user through the antenna sensor module, if the current footstep action is the same as the associated trigger action of the first frame of preset animation, then go to step 140, if the current footstep action is different from the associated trigger action of the first frame of preset animation, then give an error reminder and repeat step 130; Step 140, control the projection atmosphere light module to project the next frame of preset animation according to the preset projection scheme and go to step 130, if there is no next frame of preset animation, go to step 150; Step 150, control the trunk to open, and at the same time control the circuit system to enter the pre-closing state and go to step 160; Step 160: Determine whether there is any trunk closing event, and if so, control the trunk to close.

2. The method for intelligently opening and closing a trunk based on projection atmosphere light and motion sensing according to claim 1, characterized in that: Specifically, the triggering method of the wireless identification module includes: When any user carrying the paired key of the current vehicle stays within a first preset distance of the trunk for more than a first time period, the camera module captures an image to obtain a captured image, and performs face recognition on the captured image. If the face recognition is successful, the wireless recognition module sends a trigger signal.

3. The method for intelligently opening and closing a trunk based on projection atmosphere light and motion sensing according to claim 2, characterized in that: Specifically, the antenna sensor module recognizes the user's current footsteps, including: The antenna sensor module includes 8 antenna sensors, which are arranged in 2 rows and 4 columns. The number of any antenna sensor is a ij , where i represents the row index and j represents the column index, The recognition principle of the foot sliding to the right is as follows: <h2 style=";text-align:left;direction:ltr">D<h2 style=";text-align:left;direction:ltr"> R <h2 style=";text-align:left;direction:ltr"> =a<h2 style=";text-align:left;direction:ltr"> 11 <h2 style=";text-align:left;direction:ltr"> (t1)×a<h2 style=";text-align:left;direction:ltr"> 12 <h2 style=";text-align:left;direction:ltr"> (t2)×a<h2 style=";text-align:left;direction:ltr"> 13 <h2 style=";text-align:left;direction:ltr"> (t3)×a<h2 style=";text-align:left;direction:ltr"> 21 <h2 style=";text-align:left;direction:ltr"> (t1)×a<h2 style=";text-align:left;direction:ltr"> 22 <h2 style=";text-align:left;direction:ltr"> (t2)×a<h2 style=";text-align:left;direction:ltr"> 23 <h2 style=";text-align:left;direction:ltr"> (t3)||a<h2 style=";text-align:left;direction:ltr"> 12 <h2 style=";text-align:left;direction:ltr"> (t1)×a<h2 style=";text-align:left;direction:ltr"> 13 <h2 style=";text-align:left;direction:ltr"> (t2)×a<h2 style=";text-align:left;direction:ltr"> 14 <h2 style=";text-align:left;direction:ltr"> (t3)×a<h2 style=";text-align:left;direction:ltr"> 22 <h2 style=";text-align:left;direction:ltr"> (t1)×a<h2 style=";text-align:left;direction:ltr"> 23 <h2 style=";text-align:left;direction:ltr"> (t2)×a<h2 style=";text-align:left;direction:ltr"> 24 <h2 style=";text-align:left;direction:ltr"> (t3) (a) The recognition principle of sliding left is as follows: <h2 style=";text-align:left;direction:ltr">D<h2 style=";text-align:left;direction:ltr"> L <h2 style=";text-align:left;direction:ltr"> =a<h2 style=";text-align:left;direction:ltr"> 13 <h2 style=";text-align:left;direction:ltr"> (t1)×a<h2 style=";text-align:left;direction:ltr"> 12 <h2 style=";text-align:left;direction:ltr"> (t2)×a<h2 style=";text-align:left;direction:ltr"> 11 <h2 style=";text-align:left;direction:ltr"> (t3)×a<h2 style=";text-align:left;direction:ltr"> 23 <h2 style=";text-align:left;direction:ltr"> (t1)×a<h2 style=";text-align:left;direction:ltr"> 22 <h2 style=";text-align:left;direction:ltr"> (t2)×a<h2 style=";text-align:left;direction:ltr"> 21 <h2 style=";text-align:left;direction:ltr"> (t3)||a<h2 style=";text-align:left;direction:ltr"> 14 <h2 style=";text-align:left;direction:ltr"> (t1)×a<h2 style=";text-align:left;direction:ltr"> 13 <h2 style=";text-align:left;direction:ltr"> (t2)×a<h2 style=";text-align:left;direction:ltr"> 12 <h2 style=";text-align:left;direction:ltr"> (t3)×a<h2 style=";text-align:left;direction:ltr"> 24 <h2 style=";text-align:left;direction:ltr"> (t1)×a<h2 style=";text-align:left;direction:ltr"> 23 <h2 style=";text-align:left;direction:ltr"> (t2)×a<h2 style=";text-align:left;direction:ltr"> 22 <h2 style=";text-align:left;direction:ltr"> (t3) (b) where a ij (t m ) is the level value of the antenna sensor feedback at the i-th row and j-th column sampled for the mth time, and the sampling frequency is 5 Hz. When D R is 1 and D L When D is 0, it is judged as sliding to the right; L is 1 and D R When D is 0, it is judged as sliding to the left; R is 1 and D L When it is 1, the signal is collected again and recognized.

4. The method for intelligently opening and closing a trunk based on projection atmosphere light and motion sensing according to claim 2, characterized in that: Specifically, the trunk closing event includes: The first item is when any user carrying the paired key of the current vehicle stays outside the first preset distance of the trunk for more than a second time period; The second item is that the user presses a preset button in the current vehicle; The third item is to use the antenna sensor module to recognize the user’s footsteps when they complete the projector shutdown process.

5. The method for intelligently opening and closing a trunk based on projection atmosphere light and motion sensing according to claim 4, characterized in that: Specifically, the user completes the step recognition of closing the projection solution, including: The preset projection scheme in step 120 is replaced with the projection closing scheme, and steps 120 to 140 are repeated. In step 140, if there is no next frame of preset animation, the trunk is closed.

6. The method for intelligently opening and closing a trunk based on projection atmosphere light and motion sensing according to claim 1, characterized in that: Specifically, the projection atmosphere light module is implemented based on DLP (Digital Light Processing) technology, and projects an image frame on the ground. A preset projection scheme is played in the image frame. The preset projection scheme is used to guide the user to make an instruction action to open or close the trunk.

7. The intelligent trunk switch device based on projection atmosphere light and motion sensing is characterized in that: The method for intelligently opening and closing a trunk based on projection atmosphere light and motion sensing according to any one of claims 1 to 6 is applied, wherein the device comprises the following: The power management module includes a DC-DC chip, two feedback resistors, a diode, and a filter capacitor, which is used to convert the vehicle's 12V power supply into a 3.3V power supply to power the entire device; A wireless identification module, used to determine whether the user with pre-recorded identity information is staying in the trunk based on the key; Antenna sensor module, used to identify the user's footsteps; Projection atmosphere light module, used for animation projection according to preset projection scheme; The control module is electrically connected to the power management module, the wireless identification module, the antenna sensor module and the projection atmosphere light module.

8. The intelligent trunk switch device based on projection atmosphere light and motion sensing according to claim 7 is characterized in that: Specifically, the working mode of the wireless identification module is: When any user carrying the paired key of the current vehicle stays within a first preset distance of the trunk for more than a first time period, the camera module captures an image to obtain a captured image, and performs face recognition on the captured image. If the face recognition is successful, the wireless recognition module sends a trigger signal.

9. The intelligent trunk switch device based on projection atmosphere light and motion sensing according to claim 7, characterized in that: Specifically, the antenna sensor module is installed under the trunk of the car, and consists of 8 sensors, 4 sensors are arranged in each row, 20 cm between every two sensors, and 2 rows in total, with 10 cm between each row.

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