CN110796767A - Method and system for realizing key-free automobile key control based on gesture recognition - Google Patents
Method and system for realizing key-free automobile key control based on gesture recognition Download PDFInfo
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- CN110796767A CN110796767A CN201911048723.8A CN201911048723A CN110796767A CN 110796767 A CN110796767 A CN 110796767A CN 201911048723 A CN201911048723 A CN 201911048723A CN 110796767 A CN110796767 A CN 110796767A
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00571—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by interacting with a central unit
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/20—Movements or behaviour, e.g. gesture recognition
- G06V40/28—Recognition of hand or arm movements, e.g. recognition of deaf sign language
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
- G07C2009/00809—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission through the human body
Abstract
The invention discloses a method and a system for realizing key-free automobile key control based on gesture recognition, which comprises the following steps that when a capacitance sensing module recognizes that an operator holds a key, the capacitance sensing module sends a power-on signal to a chip module; the chip module receives the power-on signal and is awakened from a sleep state; the ultrasonic sensing module starts to send a detection sound wave pulse, the chip module receives a reflected sound wave of the sound wave pulse and generates gesture information, the gesture information is compared with a stored model for identification, and the associated definition operation is matched after the identification is successful; and the chip module generates an execution instruction according to the matched definition operation and sends the execution instruction to the vehicle domain controller module. The invention has the beneficial effects that: the novel experience of interaction between a key-free key and an automobile is presented for a user, the operation is convenient, the technological sense is strong, and the novel automobile key is suitable for being used on high-grade automobiles.
Description
Technical Field
The invention relates to the technical field of keyless automobile keys, in particular to a method and a system for realizing keyless automobile key control based on gesture recognition.
Background
In recent years, a multi-sensor fusion technology is widely used on intelligent equipment, and the basic principle of the multi-sensor information fusion technology is the same as the process of comprehensively processing information by a human brain, so that various sensors are subjected to multi-level and multi-space information complementation and optimized combination processing, and finally, the consistency explanation of the observation environment is generated. In the process, multi-source data is fully utilized for reasonable administration and use, and the final goal of information fusion is to derive more useful information by multi-level and multi-aspect combination of information based on the separated observation information obtained by each sensor.
Not only is the advantage of mutual cooperation of a plurality of sensors utilized, but also the data of other information sources are comprehensively processed to improve the intelligence of the whole sensor system. For example, the screen is lightened by lifting the wrist, the gesture recognition is carried out, and the application of the Bluetooth and wireless data transmission technology on the automobile key replaces the recognition of the traditional automobile mechanical lock structure on the key.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above-mentioned conventional problems.
Therefore, one of the technical problems solved by the present invention is: the method for realizing the key-free function of the automobile key has the advantages that the operation of a user is convenient, and the user can enter another experience of interaction with the automobile without the key.
In order to solve the technical problems, the invention provides the following technical scheme: a method for realizing key-free automobile key control based on gesture recognition comprises the following steps that when a capacitance sensing module recognizes that an operator holds a key by hand, the capacitance sensing module sends a power-on signal to a chip module; the chip module receives the power-on signal and is awakened from a sleep state; the ultrasonic sensing module starts to send a detection sound wave pulse, the chip module receives a reflected sound wave of the sound wave pulse and generates gesture information, the gesture information is compared with a stored model for identification, and the associated definition operation is matched after the identification is successful; and the chip module generates an execution instruction according to the matched definition operation and sends the execution instruction to the vehicle domain controller module, and the vehicle domain controller module controls the vehicle to complete corresponding instruction operation.
As a preferred scheme of the method for realizing the key-free automobile key control based on the gesture recognition, the method comprises the following steps: the capacitance sensing module judges whether the key is in a handheld state or not by identifying the wrapping position of the hand of the operator on the key, and can distinguish the condition that the key is placed in a pocket or a bag.
As a preferred scheme of the method for realizing the key-free automobile key control based on the gesture recognition, the method comprises the following steps: the method comprises the steps of determining the relative position of an object, wherein the ultrasonic sensing module sends out sound wave pulses through a transmitting module; the sound wave pulse rebounds to a receiving module in the chip module to be received after contacting the object, the flight time of the sound wave pulse is calculated through the chip module, and the position of the object relative to the key is determined.
As a preferred scheme of the method for realizing the key-free automobile key control based on the gesture recognition, the method comprises the following steps: after the chip module is awakened, the method also comprises a judging step, wherein the ultrasonic sensing module transmits sound wave pulses; the chip module receives the reflected sound wave pulse and judges the position information between the vehicle and the key; when the fact that the distance between the key and the vehicle is a meter without obstacles or the distance between the key and the vehicle is b meters with obstacles is detected, the key and the vehicle are communicated through the wireless module and the Bluetooth module, and the authority obtained by the user is judged to comprise opening the door of the automobile or starting the engine.
As a preferred scheme of the method for realizing the key-free automobile key control based on the gesture recognition, the method comprises the following steps: the judgment further comprises the following steps that when the distance between the obstacles is larger than a meter or the distance between the obstacles is larger than b meters; and judging that the key is in a state of being far away from the vehicle, and performing data interaction between the key and the vehicle by using the 4G module, wherein the authority of the user is limited at the moment, and only the instant information of the vehicle can be read.
As a preferred scheme of the method for realizing the key-free automobile key control based on the gesture recognition, the method comprises the following steps: the definition operation comprises a ring-drawing command which is a door-opening command and a click command with different rhythms which is a command for checking information in the automobile, wherein the ring-drawing command is a key-holding command, and a thumb draws a circle on the ultrasonic sensing module.
As a preferred scheme of the method for realizing the key-free automobile key control based on the gesture recognition, the method comprises the following steps: the method also comprises the step that the ultrasonic receiving signal is always at a lower level in a period of time by the chip module, and the chip module enters the sleep mode again.
As a preferred scheme of the method for realizing the key-free automobile key control based on the gesture recognition, the method comprises the following steps: further comprising waking up the chip module from a sleep state; only when only the read operation right exists, the authentication can be skipped, the chip module directly sends a read command to the vehicle domain controller module, and the chip module sends the current vehicle state information to a client registered by a user; if the operation or the higher-level authority is required to be written, authentication is required, including identification through vehicle owner identity information, living body fingerprint or voiceprint identification, so that the operation authority is obtained.
Therefore, the technical problem solved by the invention is as follows: the control method can be realized by depending on the system.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a realize no button car key control system based on gesture recognition which characterized in that: the device comprises a capacitance sensing module, an ultrasonic sensing module and a vehicle domain controller module which are arranged in a key and are respectively connected with a chip module; the capacitance sensing module is arranged in an area where hands can easily hold the two sides and the back of the key and is used for detecting the state of the key and awakening the chip; the ultrasonic sensing module emits sound wave pulses, and the reflected sound waves are received by the chip module; the chip module is used for calculating flight time according to the sound wave pulse, so that the position information or the recognition gesture information of the object and the key is determined, and an operation instruction is sent to the vehicle domain controller module.
As a preferred scheme for realizing the keyless automobile key control system based on the gesture recognition, the invention comprises the following steps: the chip module also comprises a receiving module, a wireless module, a Bluetooth module and a 4G module; the receiving module receives the sound wave pulse transmitted by the transmitting module in the ultrasonic sensing module, and the wireless module, the Bluetooth module and the 4G module are used for communication among the chip module, the vehicle domain controller module and the user terminal.
The invention has the beneficial effects that: the novel experience of interaction between a key-free key and an automobile is presented for a user, the operation is convenient, the technological sense is strong, and the novel automobile key is suitable for being used on high-grade automobiles.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is a schematic overall flow chart of a method for implementing a keyless automobile key control based on gesture recognition according to a first embodiment of the present invention;
FIG. 2 is a flowchart illustrating a defining operation according to a first embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an overall principle of a system for implementing a keyless entry control system based on gesture recognition according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a transmitting module and a receiving module according to a second embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments accompanied with figures are described in detail below, and it is apparent that the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
The present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially in general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Meanwhile, in the description of the present invention, it should be noted that the terms "upper, lower, inner and outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and operate, and thus, cannot be construed as limiting the present invention. Furthermore, the terms first, second, or third are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The terms "mounted, connected and connected" in the present invention are to be understood broadly, unless otherwise explicitly specified or limited, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to the schematic diagrams of fig. 1-2, the embodiment provides a method for realizing key-free automobile key control based on gesture recognition, and the method adopts multi-sensor fusion and comprises an ultrasonic sensor, a capacitor and a fingerprint sensor; and the communication mode comprises Bluetooth, wifi and 4G/5G communication, and a brand-new experience of no key and automobile interaction is presented for a user, so that the vehicle interaction operation is convenient and fast, and the science and technology sense is strong. Meanwhile, the safety performance of the vehicle in the use process is improved.
The multi-sensor information fusion is an information processing process which is carried out by utilizing computer technology to automatically analyze and synthesize information and data from multiple sensors or multiple sources under certain criteria so as to complete needed decision and estimation. Is an information processing technique for incorporating multiple or multiple sensors at different locations. With the development and maturity of sensor application technology, data processing technology, computer software and hardware technology and industrial control technology, the multi-sensor information fusion technology has formed a popular emerging subject and technology. Specifically, the method for implementing keyless entry control based on gesture recognition in this embodiment includes the following steps,
detecting the key state:
when the capacitive sensing module 100 recognizes that the operator holds the key, the capacitive sensing module 100 sends a power-on signal to the chip module 200, wherein the capacitive sensing module 100 determines whether the key is held by the operator by recognizing the wrapping position of the operator's hand on the key, and can distinguish the situation that the key is placed in a pocket or a bag. The technology is widely applied to mobile phone touch screens and household electrical equipment. The principle of the capacitive sensor is as follows: a capacitive sensor is generally composed of two parallel electrodes, air is used as a medium between the two electrodes, and without considering edge effect, the capacitance can be expressed as C ═ S/d, where ∈ represents the dielectric constant of the medium (i.e., air) between the two electrodes, S represents the area covered by the two electrodes, and d represents the distance between the two electrodes. The capacitive sensor is of the area change type (the change in S is therefore the change in C). It is easy to find that the conventional key for wireless start includes a power module for supplying power, so that the consumption of power and endurance are problems to be solved at present, and the embodiment enables the key to have good endurance by means of phase wake-up. In this embodiment, the test data and the process of the performance of the key and the conventional key applied with work simultaneously are specifically as follows:
in the embodiment, England is selected to push out an EN series single chip microcomputer and a NXPPCF8885 capacitance sensor, a current tester is used for respectively carrying out current detection on the single chip microcomputer and the NXPPCF8885 capacitance sensor, a test scene comprises a standby state and an awakening state, the detection time is 10min, 20min, 30min and 1h, and 4 groups of tests are respectively carried out.
The power consumption test results of the sleep mode standby without low power consumption and the sleep mode with low power consumption are shown in the following table 1:
table 1: standby state test data table
The power consumption of the single chip microcomputer in the interrupt mode is 100uA, and the power consumption of the PCF8885 in the interrupt mode is 10 uA. The power consumption of the singlechip in the interrupt mode is 100uA, and the standby current in the sleep mode is 1 uA. PCF8885 operates with a power consumption of 10 uA. The capacitive sensor works in the sleep mode of the single chip microcomputer, the single chip microcomputer is awakened after the capacitive sensor successfully identifies, and only the working power consumption of the capacitive sensor is 11 uA. When the scheme of triggering low power consumption by adopting a capacitive sensor is not adopted for comparison, the working power consumption of the system is 110uA, the power consumption difference of the two schemes is 10 times, and the benefit is obvious.
The chip module 200 receives the power-on signal and is awakened from the sleep state, and in this step, after the chip module 200 is awakened, the method further includes a step of determination,
the ultrasonic sensing module 300 emits a sonic pulse;
the chip module 200 receives the reflected sound wave pulse and judges the position information between the vehicle and the key;
when the fact that the distance between the key and the vehicle is kept at a meter without the obstacle or the distance between the key and the vehicle is detected at b meter with the obstacle is detected, the key and the vehicle are communicated through the wireless module 202 and the Bluetooth module 203, and the authority obtained by the user is judged to comprise opening of a door of the automobile or starting of an engine.
When the distance between the obstacles is larger than a meter or the distance between the obstacles is larger than b meters; and when the key is determined to be away from the vehicle, the key and the vehicle perform data interaction by using the 4G module 204, and at the moment, the authority of the user is determined to be limited, and only the instant information of the vehicle can be read. It should be noted that, although the value a is 50 and the value b is 10 in this embodiment, it is obvious to those skilled in the art that the above values are not limited to the examples of this embodiment.
Meanwhile, if the chip module 200 is still in a low level for a period of time, the chip module 200 enters the sleep mode again. The period of time used here is 5 minutes in this example.
The method further comprises an authentication step after the chip module 200 is awakened from the sleep state, as follows:
only when only the read operation right is available, the authentication can be skipped, and the chip module 200 directly sends a read command to the vehicle domain controller module 400, which sends the current vehicle state information to the client registered by the user;
if the operation or the higher-level authority is required to be written, authentication is required, including identification through vehicle owner identity information, living body fingerprint or voiceprint identification, so that the operation authority is obtained.
Recognizing gesture information and associating definition operations: the ultrasonic sensing module 300 starts to send a detection sound wave pulse, the chip module 200 receives a reflected sound wave of the sound wave pulse and generates gesture information, the gesture information is compared with a stored model for identification, and the associated definition operation is matched after the identification is successful; it should be noted that, the gesture information is realized by detecting the position information, and the ultrasonic sensor uses the small ultrasonic transducer array to emit a sound wave pulse when working. The method comprises the steps of determining the relative position of an object, wherein an ultrasonic sensing module 300 sends out sound wave pulses through a transmitting module 301; the sound wave pulse bounces to the receiving module 201 in the chip module 200 after contacting the object and is received, the chip module 200 calculates the flight time of the sound wave pulse, and the position of the object relative to the key is determined.
This is as if the bats were located using echoes, with the sound waves bouncing off an object (such as an operator's hand) to the chip. Therefore, by calculating the flight time, the chip can determine the position of the object relative to the device, for example, gesture information can be generated by the position information detected in the real-time hand action process, and then the associated defining operation which is set in the chip module 200 as a comparison template in advance is matched with the identified gesture information after being compared, for example, the defining operation includes a step of drawing a circle as a car door opening instruction, and a step of clicking different rhythms as an in-car information viewing instruction, wherein the step of drawing the circle is to hold a key, and simultaneously, a thumb draws a circle on the ultrasonic sensing module 300. It should be understood that the process of implementing the gesture (i.e. the position information of the gesture may be determined to be a circle) is stored in the chip module 200, and the associated definition operation is a door opening instruction, so that the chip module 200 may match the door opening instruction after recognizing the gesture, and send the door opening instruction to the vehicle-mounted controller for execution, thereby controlling the vehicle to complete the door opening action.
In this embodiment, for example, while holding the key, the thumb draws a circle with a radius of 3cm at a position 5cm above the sensor, the position information of the series of circles drawn by the thumb is entered into the memory of the ultrasonic sensor as a template in advance, the template is compared with the created template, and after the identification is successful, the operation defined by the association of the upper layer is executed, for example, an execution command is sent to open the car door, the flow is as illustrated in fig. 2,
vehicle control: the generating chip module 200 generates an execution instruction according to the matched defined operation and sends the execution instruction to the vehicle domain controller module 400, and the vehicle domain controller module 400 controls the vehicle to complete the corresponding instruction operation, for example, controls the vehicle to open the door, start the engine, and the like.
Example 2
Referring to the illustrations of fig. 3 to 4, the illustration is that a system for realizing key-free automobile key control based on gesture recognition is provided in the embodiment, and the control method of the embodiment can be realized and operated depending on the system. Specifically, the system includes a capacitive sensing module 100, a chip module 200, an ultrasonic sensing module 300, and a vehicle domain controller module 400. The capacitive sensing module 100, the chip module 200, and the ultrasonic sensing module 300 are disposed in a key, and the vehicle domain controller module 400 is a controller disposed in a vehicle, such as an on-board computer or an on-board host. The capacitance sensing module 100, the ultrasonic sensing module 300 and the vehicle domain controller module 400 are also respectively connected with the chip module 200, and can communicate with each other in a wireless transmission mode. The vehicle domain controller module 400 is a microcontroller disposed in a vehicle, and the controller is a master command device for controlling the starting, speed regulation, braking and reversing of a motor by changing the wiring of a master circuit or a control circuit and changing the resistance value in the circuit according to a predetermined sequence, and comprises a program counter, a command register, a command decoder, a time sequence generator and an operation controller, and is a decision mechanism for issuing commands, namely, completing the coordination and commanding of the operation of the whole computer system.
Furthermore, it should be noted that the capacitive sensing module 100 is an area capacitive sensor that is disposed on both sides and the back of the key of the automobile and is easily held by a human hand, and the risk of erroneous touch is reduced to the greatest extent due to the layout on multiple surfaces of the key. The capacitance sensor is a sensor which converts the change of a measured object (such as size, pressure and the like) into the change of capacitance, when the measured object changes, the change of the capacitance can cause the change of the capacitance, and then the change of the capacitance is converted into an electric signal to be output through a matched measuring circuit, if the hand holding is identified, the capacitance sensor sends a power-on signal to a chip, the chip is awakened from a dormant state, and the ultrasonic sensor in the key starts to work. For example, in this embodiment, a low-power-consumption high-precision capacitive sensor chip of the type FDC2214 may be adopted, and the capacitive sensor chip and the chip module 200 are integrated and connected to realize the judgment of whether the key is held by hand.
In this embodiment, the chip module 200 is an SOC chip, which is called a system on chip and is a hardware device of an integrated circuit board. The SOC chip contains logic cores including CPUs, clock circuits, timers, interrupt controllers, serial-parallel interfaces, other peripherals, I/O ports, and glue logic for between various IP cores, etc.; the memory core comprises various volatile memories, nonvolatile memories, Cache memories and the like; the analog core comprises an ADC, a DAC, a PLL and analog circuits used in some high-speed circuits, and has very powerful data processing functions. An integrated circuit with a dedicated target, which contains the whole system and has the whole content of embedded software, is a technology for realizing the whole process from determining the system function, dividing the system into software and hardware and completing the design, and also can be a chip integration of the core of an information system from a narrow point of view, integrating the key components of the system on one chip, or from a broad point of view, an SOC is a miniature system, for example, a central processing unit is the brain, and an SOC chip is a system including the brain, the heart, the eyes and the hands. Therefore, the chip module 200 further includes a receiving module 201, a wireless module 202, and a bluetooth module 203 and a 4G module 204; the receiving module 201 receives the sound wave pulse transmitted by the transmitting module 301 in the ultrasonic sensing module 300, and the wireless module 202, the bluetooth module 203 and the 4G module 204 are used for communication between the chip module 200 and the vehicle domain controller module 400 and the user terminal. The 4G module 204 may also be in a 5G communication mode, and the wireless module 202 is in WiFi connection, and when the key is far away from the vehicle, the 4G or 5G is used to support communication.
Further, the ultrasonic sensing module 300 emits an acoustic pulse, and the reflected acoustic is received by the chip module 200; the chip module 200 is configured to calculate a flight time according to the acoustic pulse, thereby determining position information or recognition gesture information of the object and the key, and sending an operation instruction to the vehicle domain controller module 400. The ultrasonic sensing module 300 includes a plurality of ultrasonic sensors disposed on the key, and uses a small ultrasonic transducer array to emit a sound pulse, and the ultrasonic transducer functions to convert the input electric power into mechanical power (i.e., ultrasonic waves) and transmit the mechanical power, and consumes a small amount of power by itself, and can emit the sound pulse. It should be noted that, in this embodiment, it is proposed that the chip module 200 receives the reflected sound wave pulse, and from the pulse that is just started to be transmitted to the received pulse, the chip module 200 calculates the time of flight of the sound wave, so as to determine the distance. However, it is obvious that, in this embodiment, the ultrasonic sensing module 300 may independently complete the transmission and reception of the acoustic wave, and the chip module 200 is connected to the ultrasonic sensing module 300 to obtain the time of the front pulse and the back pulse, and the time of flight may be calculated to determine the distance of the obstacle, where the above determination of the position information may be implemented.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A method for realizing key-free automobile key control based on gesture recognition is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
when the capacitance sensing module (100) recognizes that an operator holds a key by hand, the capacitance sensing module (100) sends a power-on signal to the chip module (200);
the chip module (200) receives the power-on signal and is awakened from a sleep state;
the ultrasonic sensing module (300) starts to send a detection sound wave pulse, the chip module (200) receives a reflected sound wave of the sound wave pulse and generates gesture information, the gesture information is compared with a stored model for identification, and after the identification is successful, the associated definition operation is matched;
the chip module (200) generates an execution instruction according to the matched definition operation and sends the execution instruction to the vehicle domain controller module (400), and the vehicle domain controller module (400) controls the vehicle to complete corresponding instruction operation.
2. The method for realizing keyless automobile key control based on gesture recognition as claimed in claim 1, wherein: the capacitance sensing module (100) judges whether the key is in a handheld state or not by identifying the position of the hand of an operator relative to the key from multiple angles, and can distinguish the condition that the key is placed in a pocket or a bag.
3. The method for realizing keyless automobile key control based on gesture recognition according to claim 1 or 2, wherein: comprising the step of determining the relative position of the object,
the ultrasonic sensing module (300) sends out sound wave pulses through the transmitting module (301);
the sound wave pulse bounces to a receiving module (201) in the chip module (200) after contacting an object and is received, the chip module (200) calculates the flight time of the sound wave pulse, and the position of the object relative to a key is determined.
4. The method for realizing keyless automobile key control based on gesture recognition as recited in claim 3, wherein: after the chip module (200) is awakened, the method also comprises a judging step,
the ultrasonic sensing module (300) emits a sonic pulse;
the chip module (200) receives the reflected sound wave pulse and judges the position information between the vehicle and the key;
when the fact that the distance between the key and the vehicle is kept at a meter without an obstacle or at b meter with the obstacle is detected, the key and the vehicle are communicated through the wireless module (202) and the Bluetooth module (203), and the authority obtained by the user is judged to comprise opening the door of the automobile or starting the engine.
5. The method for realizing keyless automobile key control based on gesture recognition as recited in claim 4, wherein: the determination further comprises the step of,
when the distance between the obstacles is larger than a meter or the distance between the obstacles is larger than b meters;
and judging that the key is in a state of being away from the vehicle, and performing data interaction between the key and the vehicle by using a 4G module (204), wherein the authority of the user is limited at the moment, and only the instant information of the vehicle can be read.
6. The method for realizing keyless automobile key control based on gesture recognition according to claim 4 or 5, wherein the method comprises the following steps: the defining operation comprises the steps of drawing a circle as a door opening instruction and clicking with different rhythms as an in-vehicle information viewing instruction, wherein the circle is drawn by a thumb on the ultrasonic sensing module (300) while a key is held.
7. The method for realizing keyless automobile key control based on gesture recognition as recited in claim 6, wherein: the method also comprises the step that the ultrasonic receiving signal is always at a lower level in a period of time by the chip module (200), and the chip module (200) enters the sleep mode again.
8. The method for realizing keyless automobile key control based on gesture recognition as recited in claim 6, wherein: further comprising waking up the chip module (200) from a sleep state;
only when only the read operation right is available, the authentication can be skipped, and the chip module (200) directly sends a read command to the vehicle domain controller module (400), which sends the current vehicle state information to the client registered by the user;
if the operation or the higher-level authority is required to be written, authentication is required, including identification through vehicle owner identity information, living body fingerprint or voiceprint identification, so that the operation authority is obtained.
9. The utility model provides a realize no button car key control system based on gesture recognition which characterized in that: the key comprises a chip module (200) arranged in the key, and a capacitance sensing module (100), an ultrasonic sensing module (300) and a vehicle domain controller module (400) which are respectively connected with the chip module (200);
the capacitance sensing module (100) is arranged in an area where hands can easily hold the two sides and the back of the key and used for detecting the state of the key and awakening the chip; the ultrasonic sensing module (300) emits sound wave pulses, and the reflected sound waves are received by the chip module (200); the chip module (200) is used for calculating flight time according to the sound wave pulse, so that the position information or the recognition gesture information of an object and a key is determined, and an operation instruction is sent to the vehicle domain controller module (400).
10. The system for implementing keyless entry of a vehicle according to claim 9, wherein the gesture recognition based system comprises: the chip module (200) further comprises a receiving module (201), a wireless module (202), a Bluetooth module (203) and a 4G module (204);
the receiving module (201) receives the sound wave pulse transmitted by the transmitting module (301) in the ultrasonic sensing module (300), and the wireless module (202), the Bluetooth module (203) and the 4G module (204) are used for communication among the chip module (200), the vehicle domain controller module (400) and the user terminal.
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