CN114291034A - Kick control method and kick control system for electric tail gate of automobile - Google Patents
Kick control method and kick control system for electric tail gate of automobile Download PDFInfo
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Abstract
The invention discloses a kick control method and a kick control system for an electric tail gate of an automobile, and particularly relates to the technical field of automobile electronics, wherein the kick control method comprises a human body position sensing module, a projection device and a human foot action sensing module, wherein the human body position sensing module regularly acquires signals of the distance, the signal intensity and the azimuth angle between a human body and an automobile body under the control of a main control chip and feeds back the signals to the main control chip; the human body position sensing module judges that the distance between the human body and the vehicle body is a first distance and a second distance; triggering the projection device to project light to the ground to form a sensing area at a first distance; when the human body position sensing module is in a first distance, the human foot action sensing module is triggered to sense the human foot action, the main control chip controls the human foot action in the periodic scanning sensing area, and signals are fed back to the main control chip and the human body position sensing module; the human body position sensing module judges that the motion of the human foot meets the requirements, and then the electric tail gate is opened, otherwise, the human body position sensing module is in a standby state or a scanning state. Effectively avoiding opening the electric tail gate by mistake.
Description
Technical Field
The application relates to the technical field of automotive electronics, in particular to a kick control method and a kick control system for an automotive electric tail gate.
Background
In recent years, along with the popularization of automobiles and the gradual improvement of the intelligent degree of the automobiles, automobiles with higher configuration such as SUVs, saloon cars and the like are sequentially provided with electric tail gate products and kick products, the electric opening and closing of the tail gate are realized in a kick triggering mode, and the comfort level and the brand value of users are greatly improved.
However, because the foot kicking products used by the current automobiles are basically arranged in the sensing areas below the rear tail boxes of the automobiles, the risks of car washing and false triggering of running water to open the rear tail boxes exist all the time, and all manufacturers need to perform a lot of tests and set use limits aiming at the problem of false triggering to start the tail doors of the automobiles when designing the foot kicking products for the automobiles, so that the user experience is influenced.
The technical means adopted for solving the problem of false triggering and opening the rear tail box in the prior art comprises the steps that a capacitance type kick induction is installed in a reserved clamping groove of a rear bumper of an automobile, two induction antennas or built-in antennas are configured in the capacitance type kick induction, and kick actions are identified by detecting capacitance changes around the antennas. However, the sensitivity and the installation position of the capacitive kick sensing are high, if the sensitivity of the capacitive kick sensing is too high, the tail door is opened after being triggered by car washing, rain and other conditions, and the sensitivity of the capacitive kick sensing is too low, so that the problem of influence on the identification of the kick is solved; in addition, the antenna induction of the capacitive kick induction needs to be designed for the automobile model without a reserved clamping groove on the rear bumper of the automobile, so that the cost is increased.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a kick control method and a kick control system for an electric tailgate of an automobile, so as to solve the technical problems that the electric tailgate of the automobile is easily opened by false triggering, the kick sensing is poor, the installation cost of the kick system is high, and the like.
In order to achieve the technical purpose, the application provides a kick control method of an electric tail gate of an automobile, which comprises the following steps:
a human body position sensing module is arranged, a main control chip controls to periodically acquire signals of the distance, the signal intensity and the azimuth angle between a human body and a vehicle body, and the signals are fed back to the main control chip;
the human body position sensing module judges that the distance between the human body and the vehicle body is a first distance and a second distance;
the method comprises the steps that a projection device is arranged, when the distance between a human body and a vehicle body is a first distance, a human body position sensing module outputs a trigger signal to the projection device, and the projection device is triggered to project light rays to the ground to form a sensing area;
setting a human foot action sensing module, wherein when the distance between a human body and a vehicle body is in a second distance, the human body position sensing module outputs a trigger signal to the human foot action sensing module, the human foot action sensing module is triggered to sense and periodically scan the human foot action in a sensing area under the control of a main control chip, and a signal is fed back to the main control chip and the human body position sensing module is made to judge the human foot action;
if the human body position sensing module judges that the motion of the human feet in the sensing area accords with the set motion, an instruction is sent to the electric tail gate system to execute the operation of opening the electric tail gate, and if not, the human body position sensing module is in a standby state or a scanning state.
Furthermore, the human body position sensing module is provided with a transmitting antenna and at least two receiving antennas through an array, calculates and processes the distance, the signal intensity and the azimuth angle between the obtained human body and the vehicle body, and sends the processed data to the main control chip.
Furthermore, the human foot action sensing module is provided with a transmitting antenna and a receiving antenna through an array, and the human foot action sensing module calculates and processes the obtained kick speed change rate, signal intensity and azimuth angle of the human foot and sends the processed data to the human body position sensing module and the main control chip.
Furthermore, the human foot action sensing module acquires the speed change rate of the kicking of the human foot and feeds the speed change rate back to the human body position sensing module, and the human body position sensing module compares the speed change rate of the kicking with the set human foot action data.
Further, the human body position sensing module judges that the first distance value between the human body and the vehicle body is 0.6m-2 m.
Further, the human body position sensing module judges that a second distance value between the human body and the vehicle body is 0m-0.5 m.
The application also provides a control system is played to foot of electronic tail-gate of car, includes: the human body position sensing module, the projection device, the human foot action sensing module and the main control chip are arranged on the main control chip;
the human body position sensing module is respectively connected with the projection device and the human foot action sensing module;
the main control chip is in communication connection with the human body position sensing module and the human foot action sensing module;
the human body position sensing module is used for acquiring the distance between a human body and a vehicle body, the signal intensity and the azimuth angle signal and judging the distance between the human body and the vehicle body to be a first distance and a second distance, and the human body position sensing module is provided with a trigger circuit connected with the electric tail gate system;
the human body position sensing module triggers the projection device to project light to the ground through the trigger circuit to form a sensing area;
the human body position sensing module triggers the human foot action sensing module to sense the human foot action in the sensing area through the trigger circuit.
Further, the sensing area is the range of human foot motion detection, the planar shape of the sensing area comprises a circle, a sector or a polygon, and the area of the sensing area is 50cm2-500cm2。
Furthermore, the human body position sensing module, the human foot action sensing module and the projection device are respectively arranged at the rear part of the vehicle body;
human position response module reaches people's foot action response module has arranged emitting antenna and receiving antenna respectively in array, just emitting antenna arranges in the centre, receiving antenna arranges respectively in emitting antenna's both sides side.
Further, the human body position sensing module is a microwave chip or a millimeter wave chip, and the human foot action sensing module is a microwave chip or a millimeter wave chip.
According to the technical scheme, the kick control method of the electric tail gate of the automobile, provided by the application, can periodically acquire signals of the distance, the signal intensity and the azimuth angle between a human body and an automobile body by arranging the human body position sensing module under the control of the main control chip, and judges the distance between the human body and the automobile body as the first distance and the second distance;
the projection device and the human foot action sensing module are also arranged, when a human body is positioned at a first distance, the projection device is started to project a sensing area for sensing the human foot action on the ground, the light projected by the projection device is more convenient for a user to identify the sensing area, the user can conveniently kick without hindrance, and meanwhile, the specific sensing area also reduces the condition that the electric tail gate is opened by misoperation;
when the human body is at the second distance, the human foot action sensing module is started, and the human foot action in the sensing area can be periodically scanned under the control of the main control chip, so that the recognition success rate is high, the requirement on the kicking action of the user is low, and the main control chip and the human body position sensing module are fed back to make human foot action judgment so as to determine whether the electric tailgate is opened or not;
therefore, the recognition distance is far, the damage of the electric tail gate or other obstacles to a user is reduced, and the condition of mistakenly opening the electric tail gate can be effectively avoided by mutually supporting and having an interaction relation in functions among the human body position sensing module, the projection device and the human foot action sensing module.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a block diagram illustrating a flow of a kick control method for an electric tailgate of an automobile according to an embodiment of the present disclosure;
fig. 2 is a flowchart of an actual operation of a kick control method for an electric tailgate of an automobile according to an embodiment of the present application;
fig. 3 is a schematic diagram illustrating a module connection of a kick control system of an electric tailgate of an automobile according to an embodiment of the present disclosure;
fig. 4 is a schematic layout of receiving antennas and transmitting antennas provided in the embodiments of the present application;
fig. 5 is a schematic view of a kick provided in an embodiment of the present application.
In the figure:
10. a human body position sensing module; 101. a trigger circuit;
20. a projection device;
30. a human foot action sensing module;
40. a main control chip;
50. a power supply module;
60. electric tail gate system.
Detailed Description
The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "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 in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
The embodiment of the application discloses a kick control method and a kick control system for an electric tail gate of an automobile.
The electric tail gate is used for solving the problem that the conventional automobile electric tail gate is easily triggered and opened by mistake, and also has the problems of insensitive kick induction and higher kick installation cost.
Fig. 1-2 show a block flow diagram and a flowchart of a kick control method for an electric tailgate of an automobile according to an embodiment of the present application.
According to the technical scheme, the distance between the user and the vehicle body is judged by arranging the human body position sensing module 10, and the distance between the human body and the vehicle body is planned and divided, namely, the distance between the human body and the vehicle body is divided into a first distance and a second distance. The distance between the human body and the vehicle body of the embodiment may be a distance between the upper half of the human body and the vehicle body, or a distance between the lower half of the human body and the vehicle body, such as a distance between the leg and the vehicle body; preferably, the human body position sensing module 10 senses the distance between the leg and the vehicle body, so that the human body position sensing module 10 can sense and trigger the projection device 20 and the human foot motion sensing module 30 to perform corresponding motions with respect to the leg at different distances.
Hereinafter, the distance between the leg and the vehicle body sensed by the human body position sensing module 10 will be mainly described as reference.
Specifically, as follows, when the leg is at the first distance, the human body position sensing module 10 triggers the projection device 20 to start, when the leg is at the second distance, the human body position sensing module 10 triggers the human foot action sensing module 30 to start, then the human body position sensing module 10 feeds back the main control chip 40, and the human body position sensing module 10 triggers the electric tailgate system 60 to control the opening of the electric tailgate. The purpose of opening the electric tail gate of the automobile by kick control is realized step by step, and regular and continuous induction and scanning can be carried out by controlling the main control chip 40, the normal work of the system is stabilized, the electric tail gate is prevented from being opened accidentally, and the insensitivity of kick induction is also avoided.
The human body position sensing module 10, the projection device 20 and the human foot action sensing module 30 are combined and mounted on the same structural shell, so that the mounting cost can be reduced; or the installation is carried out separately, so that the installation convenience of the device and the module is improved.
Referring to fig. 1, a block diagram of a flow process of an embodiment of the present application is shown, where the method includes:
s1, arranging a human body position sensing module 10, periodically acquiring signals of the distance between the legs and the vehicle body, the signal strength and the azimuth angle under the control of the main control chip 40, and feeding the signals back to the main control chip 40;
s2, the human body position sensing module 10 judges that the distance between the leg and the vehicle body is a first distance and a second distance;
s3, arranging a projection device 20, and when the distance between the leg and the vehicle body is a first distance, outputting a trigger signal to the projection device 20 by the human body position sensing module 10, and triggering the projection device 20 to project light to the ground to form a sensing area;
s4, arranging a human foot action sensing module 30, when the distance between the leg and the vehicle body is a second distance, the human body position sensing module 10 outputs a trigger signal to the human foot action sensing module 30, the human foot action sensing module 30 is triggered to sense human foot actions and periodically scan the human foot actions in a sensing area under the control of the main control chip 40, and signals are fed back to the main control chip 40 and the human body position sensing module 10 to make human foot action judgment;
s5, if the human body position sensing module 10 determines that the motion of the human foot in the sensing area matches the set motion, it sends an instruction to the electric tailgate system 60 to open the electric tailgate, otherwise, the human body position sensing module 10 is in a standby state or a scanning state.
More specifically, the human body position sensing module 10, the projection apparatus 20 and the human foot movement sensing module 30 of this embodiment are powered by the power module 50 installed on the vehicle body, the human body position sensing module 10 and the human foot movement sensing module 30 are respectively connected with the projection apparatus 20 through hard wires, and the used projection apparatus 20 at least includes a projection lamp (such as a high-brightness LED lamp bead). Therefore, the human body position sensing module 10 controls the projection device 20 to be turned on and off, in addition to sensing a signal between the leg and the vehicle body.
The projection lamp works on the principle that after the power module 50(+12V) powers on the projection lamp, the driving circuit lights the projection lamp according to the set current (LED constant current driving IC), the projection lamp is turned off after the power module 50 is switched off, and the power module 50 is controlled to be turned on or off when the projection lamp needs to flicker.
As shown in fig. 5, the circuit of the projection lamp is a hardware circuit, and the human body position sensing module 10 can control the specific functions thereof to realize the result, so that when the projection lamp projects light to the ground, a set logo image is formed. The area size of the logo image is the size of the sensing range, then a user steps on the logo image, and can also kick according to a set action above the logo image, so that the user is limited to execute a specific action in a specified area. Therefore, the situation that the user mistakenly opens the electric tail gate when walking at ordinary times or in the environment interference is avoided.
The human body position sensing module 10 operates according to the principle that the human body position sensing module 10 is configured with the trigger circuit 101, that is, the human body position sensing module 10 is connected to the electric tailgate system 60 or the vehicle outside handle switch through a trigger line, and generally speaking, the connection between the human body position sensing module 10 and the electric tailgate system 60 or the vehicle outside handle switch can be connected by an IO method or an LIN network communication. Therefore, the human body position sensing module 10 can be started to enter a standby state or a scanning state after being powered by the power module 50, and is ready to scan a human body close to a vehicle body at any time.
When the human body position sensing module 10 scans that a leg enters a first distance, the human body position sensing module 10 starts the projection device 20 to project light on a designated ground, and a sensing area with a logo image is displayed on the ground.
When the human body position sensing module 10 scans that a leg enters a second distance, a user makes a kicking action on a sensing area according to a prompt, the human body position sensing module 10 starts the kicking action of the human foot action sensing module 30 in the sensing area of the logo image, then the human foot action sensing module 30 feeds back a signal to the main control chip 40 and the human body position sensing module 10, when the human body position sensing module 10 judges that the kicking action accords with a set action, the human body position sensing module 10 sends an instruction to the electric tailgate system 60 to start the electric tailgate, and then the tailgate is closed after the leg leaves a specified range distance; if the human body position sensing module 10 determines that the kick action does not conform to the set action, it will continuously wait until the kick recognition time is over and enter the standby state.
The principle of the human foot motion sensing module 30 is that the human foot motion sensing module 30 is configured with the trigger circuit 101, that is, the human foot motion sensing module 30 is connected to the main control chip 40 through the trigger line, when the human foot motion sensing module 30 scans the human foot motion, a feedback signal is sent to the human body position sensing module 10 and the main control chip 40, and then the human body position sensing module 10 determines the human foot motion.
Thus, by arranging the human body position sensing module 10 and under the control of the main control chip 40, signals of the distance between the leg and the vehicle body, the signal strength and the azimuth angle can be acquired regularly, and the distance between the leg and the vehicle body is judged as a first distance and a second distance;
the projection device 20 and the human foot action sensing module 30 are further arranged, when the leg is located at the first distance, the projection device 20 is started to project a sensing area for sensing the human foot action on the ground, the light projected by the projection device 20 is more convenient for a user to identify the sensing area, the user can conveniently kick without hindrance, and meanwhile, the situation that the electric tail gate is opened by misoperation is reduced due to the specific sensing area;
when the leg is at the second distance, the human foot action sensing module 30 is started, and under the control of the main control chip 40, the human foot action in the sensing area can be periodically scanned, the recognition success rate is high, the requirement on the kicking action of the user is low, and the human foot action judgment is made by the main control chip 40 and the human body position sensing module 10 in a feedback manner, so that whether the electric tail gate is opened or not is determined;
therefore, according to the distance judgment of the human body position sensing module 10, the recognition distance is long, the harm of the electric tail gate or other obstacles to the human body is reduced, and the situation of mistakenly opening the electric tail gate can be effectively avoided through mutual support and interaction among the human body position sensing module 10, the projection device 20 and the human foot action sensing module 30 in function.
Referring to fig. 4, the human body position sensing module 10 is connected to the main control chip 40 through serial ports, IIC, SPI, and the like, and the human body position sensing module 10 has two or four receiving antennas, specifically, when one transmitting antenna is provided, two or four receiving antennas are provided, and when two transmitting antennas are provided, two or four receiving antennas are provided, which certainly does not exclude other combination methods; the transmitting antenna is arranged among the plurality of receiving antennas to form an array arrangement relation. The human body position sensing module 10 sends out the high frequency wave line through transmitting antenna, calculate through the data that a plurality of receiving antenna received and handle, calculate the angle that the shank is located through the difference of the signal strength that the receiving antenna who arranges in transmitting antenna both sides received and the deviation of received strength, it has the solidification procedure to calculate the data in the human body position sensing module 10 to this distance, signal strength and azimuth between shank and the automobile body who obtains, and send the data of handling to main control chip 40.
Since the human body position sensing module 10 of this embodiment can obtain the azimuth angle of the user, that is, can determine the specific position of the user station in the middle of the rear portion of the vehicle or on the left or right, the user starts the projection device 20 to project light when approaching the first distance from the rear portion of the vehicle. Like this, when the user walks from vehicle left direction to right direction, perhaps when walking from the vehicle rear right direction to left direction, can not carry out the foot and play the discernment action, the response region of human position response module discernment shank is the perpendicular dead back of rear of a vehicle, so can greatly avoid the people to take place in the condition that the back tail gate was opened in the mistake trigger when walking outside the vehicle at will.
As shown in fig. 4, the human foot motion sensing module 30 is connected to the main control chip 40 through serial ports, IIC, SPI, and the like, and the human foot motion sensing module 30 has a transmitting antenna and a receiving antenna, in this embodiment, the transmitting antenna is preferably set as one, and the corresponding receiving antenna is set as one, although other combination methods are not excluded; the transmitting antenna and the receiving antenna can also form an array arrangement relationship. The human body position sensing module 10 sends out the high frequency wave line through transmitting antenna, carry out calculation processing through the data that receiving antenna received, calculate the angle that the people's foot is located through the difference of signal intensity and the deviation of received intensity that receiving antenna received, the people's foot here refers to parts such as sole, has solidification procedure in the people's foot action sensing module 30 to carry out calculation processing to data, speed change rate, signal intensity and the azimuth of the kicking of people's foot that obtain with this to send the data of processing to human body position sensing module 10 and main control chip 40.
The human foot action sensing module 30 of this embodiment can also acquire the azimuth of the user, thereby set for a less azimuth, make the foot step action of user only can realize the effect that the tail gate after the car was started to the kick in the response region of setting for, the human foot action sensing module discerns the response region of human foot and is the region that the car tail is close to ground downwards in the slant, also be that projection light of projection arrangement is from the tail of a vehicle downwards in the slant throw on ground, so can greatly avoid the user to trigger the condition emergence of opening the tail gate by mistake. Aiming at the situation of a user with thin feet and small change rate of the kicking distance, the human foot action sensing module 30 mainly calculates the scanned distance change rate to obtain data such as the kicking speed, the kicking distance change rate and the like, so as to judge whether the kicking action conforms to the set action range.
Preferably, the human foot action sensing module 30 obtains the kicking speed of the human foot, the human foot action sensing module 30 feeds back the scanned information to the human body position sensing module 10, the human body position sensing module 10 compares the kicking speed change rate with the set human foot action data, and the automobile rear tail door is selectively opened or closed according to the comparison result.
Preferably, the human body position sensing module 10 determines that the first distance between the leg and the vehicle body is 0.6m-2m, for example, when the user approaches to a range of 1.5m from the rear of the vehicle, the human body position sensing module 10 controls the projection device 20 to operate, and the projection device 20 projects light to the ground to form a sensing area for the user to kick.
Preferably, the human body position sensing module 10 determines that the second distance between the leg and the vehicle body is 0m-0.5m, for example, when the user approaches the range of 0.3 m in front of the sensing area. The human body position sensing module 10 controls the human foot action sensing module 30 to work, so that the human foot action sensing module 30 scans and identifies the human foot action on the sensing area and feeds back the human foot action to the human body position sensing module 10.
Fig. 3 is a schematic diagram of a module connection of a kick control system of an electric tailgate of an automobile according to an embodiment of the present application.
A kick control system of an automotive electric tailgate, comprising: the human body position sensing module 10, the projection device 20, the human foot action sensing module 30 and the main control chip 40; the human body position sensing module 10 is respectively connected with the projection device 20 and the human foot action sensing module 30; the main control chip 40 is connected with the human body position sensing module 10 and the human foot action sensing module 30 in a communication way; the human body position sensing module 10 is used for acquiring the distance between the leg and the vehicle body, the signal strength and the azimuth angle signal, and judging the distance between the leg and the vehicle body to be a first distance and a second distance, and the human body position sensing module 10 is provided with a trigger circuit 101 connected with the electric tailgate system 60; the human body position sensing module 10 triggers the projection device 20 to project light to the ground through the trigger circuit 101 to form a sensing area; the human body position sensing module 10 triggers the human foot motion sensing module 30 to sense the motion of the human foot in the sensing area through the trigger circuit 101.
Thus, by arranging the human body position sensing module 10 and under the control of the main control chip 40, signals of the distance between the leg and the vehicle body, the signal strength and the azimuth angle can be acquired regularly, and the distance between the leg and the vehicle body is judged as a first distance and a second distance;
the projection device 20 and the human foot action sensing module 30 are further arranged, when the leg is located at the first distance, the projection device 20 is started to project a sensing area for sensing the human foot action on the ground, the light projected by the projection device 20 is more convenient for a user to identify the sensing area, the user can conveniently kick without hindrance, and meanwhile, the situation that the electric tail gate is opened by misoperation is reduced due to the specific sensing area;
when the leg is at the second distance, the human foot action sensing module 30 is started, and under the control of the main control chip 40, the human foot action in the sensing area can be periodically scanned, the recognition success rate is high, the requirement on the kicking action of the user is low, and the human foot action judgment is made by the main control chip 40 and the human body position sensing module 10 in a feedback manner, so that whether the electric tail gate is opened or not is determined;
therefore, according to the distance judgment of the human body position sensing module 10, the recognition distance is long, the harm of the electric tail gate or other obstacles to the human body is reduced, and the situation of mistakenly opening the electric tail gate can be effectively avoided through mutual support and interaction among the human body position sensing module 10, the projection device 20 and the human foot action sensing module 30 in function.
Preferably, the sensing area projected by the projection device 20 is used as a range for detecting the motion of the human foot, and specifically, the planar shape of the sensing area includes a circle, a fan, or a polygon. For avoiding the situation that the user mistakenly triggers to open the back door due to the overlarge area, the area of the sensing area is preferably 50cm in the embodiment2-500cm2According to the actual use condition, the sensing area is preferentially set to be a circular area with the radius of 4cm, 5cm and 6 cm. Therefore, the area of the induction area is limited, and the situation that a user opens the rear tail door of the automobile when walking near the automobile can be effectively avoided.
Preferably, the human body position sensing module 10, the human foot motion sensing module 30 and the projection device 20 are respectively arranged at the rear part of the vehicle body, and can be specifically mounted on the inner wall of a rear bumper at the rear part of the vehicle; the human body position sensing module 10 and the human foot motion sensing module 30 are respectively arranged with transmitting antennas and receiving antennas in an array, the transmitting antennas are arranged in the middle, and the receiving antennas are respectively arranged at two sides of the transmitting antennas. Through the reasonable arrangement of the transmitting antenna and the receiving antenna, the human body position sensing module 10 can sense and scan the user in several dimensions of distance, signal strength and azimuth angle. Therefore, the human body position recognition effect with high efficiency and high quality is realized.
Preferably, the human body position sensing module 10 in this embodiment at least includes a microwave chip or a millimeter wave chip, and the human foot motion sensing module 30 includes a microwave chip or a millimeter wave chip, wherein the type of the microwave chip may be TS24GTR 12S. The used microwave chip and millimeter wave chip are respectively configured with the transmitting antenna and the receiving antenna, and the transmitting antenna and the receiving antenna are installed in an array arrangement mode, so that data such as distance, distance change, signal intensity deviation and the like are provided for the human body position sensing module 10 and the human foot action sensing module 30, data calculation is conveniently carried out on human foot actions, and a more accurate judgment result is obtained.
In the above description, the kick control method and the kick control system for the electric tailgate of the vehicle provided by the present application are described in detail, and a person skilled in the art may change the specific implementation manner and the application scope according to the idea of the embodiment of the present application.
Claims (10)
1. A kick control method for an electric tail gate of an automobile is characterized by comprising the following steps:
a human body position sensing module is arranged, a main control chip controls to periodically acquire signals of the distance, the signal intensity and the azimuth angle between a human body and a vehicle body, and the signals are fed back to the main control chip;
the human body position sensing module judges that the distance between the human body and the vehicle body is a first distance and a second distance;
the method comprises the steps that a projection device is arranged, when the distance between a human body and a vehicle body is a first distance, a human body position sensing module outputs a trigger signal to the projection device, and the projection device is triggered to project light rays to the ground to form a sensing area;
setting a human foot action sensing module, wherein when the distance between a human body and a vehicle body is in a second distance, the human body position sensing module outputs a trigger signal to the human foot action sensing module, the human foot action sensing module is triggered to sense and periodically scan the human foot action in a sensing area under the control of a main control chip, and a signal is fed back to the main control chip and the human body position sensing module is made to judge the human foot action;
if the human body position sensing module judges that the motion of the human feet in the sensing area accords with the set motion, an instruction is sent to the electric tail gate system to execute the operation of opening the electric tail gate, and if not, the human body position sensing module is in a standby state or a scanning state.
2. The kick control method for an electric tailgate of an automobile according to claim 1, wherein the human body position sensing module is arranged with a transmitting antenna and at least two receiving antennas by an array, calculates the obtained distance between the human body and the automobile body, signal intensity and azimuth angle, and transmits the processed data to the main control chip.
3. The kicking control method of an electric tailgate of an automobile according to claim 1, wherein the human foot motion sensing module is arranged with a transmitting antenna and a receiving antenna by an array, the human foot motion sensing module calculates and processes the obtained speed change rate, signal intensity and azimuth angle of the kicking of the human foot, and sends the processed data to the human body position sensing module and the main control chip.
4. The kicking control method of the electric tailgate of the automobile according to claim 3, wherein the kicking speed variation rate of the human foot is obtained by the human foot action sensing module and fed back to the human body position sensing module, and the human body position sensing module compares the kicking speed variation rate with the set human foot action data.
5. The kick control method of an electric tailgate of an automobile according to claim 1, wherein the human body position sensing module determines that the first distance value between the human body and the automobile body is 0.6m-2 m.
6. The kick control method of an electric tailgate of an automobile according to claim 1, wherein the human body position sensing module determines that the second distance between the human body and the automobile body is 0m to 0.5 m.
7. The utility model provides a control system is played to foot of electronic tail-gate of car which characterized in that includes: the human body position sensing module, the projection device, the human foot action sensing module and the main control chip are arranged on the main control chip;
the human body position sensing module is respectively connected with the projection device and the human foot action sensing module;
the main control chip is in communication connection with the human body position sensing module and the human foot action sensing module;
the human body position sensing module is used for acquiring the distance between a human body and a vehicle body, the signal intensity and the azimuth angle signal and judging the distance between the human body and the vehicle body to be a first distance and a second distance, and the human body position sensing module is provided with a trigger circuit connected with the electric tail gate system;
the human body position sensing module triggers the projection device to project light to the ground through the trigger circuit to form a sensing area;
the human body position sensing module triggers the human foot action sensing module to sense the human foot action in the sensing area through the trigger circuit.
8. The kick control system of an electric tailgate according to claim 7, wherein the sensing region is a region for detecting human foot motion, the planar shape of the sensing region includes a circle, a sector, or a polygon, and the area of the sensing region is 50cm2-500cm2。
9. The kick control system of an electric tailgate of an automobile according to claim 7, wherein the human body position sensing module, the human foot motion sensing module and the projection device are respectively provided at a rear portion of an automobile body;
human position response module reaches people's foot action response module has arranged emitting antenna and receiving antenna respectively in array, just emitting antenna arranges in the centre, receiving antenna arranges respectively in emitting antenna's both sides side.
10. The kick control system of an electric tailgate of an automobile according to claim 9, wherein the human body position sensing module is a microwave chip or a millimeter wave chip, and the human foot motion sensing module is a microwave chip or a millimeter wave chip.
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