CN112526453B - User positioning method and intelligent terminal - Google Patents
User positioning method and intelligent terminal Download PDFInfo
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- CN112526453B CN112526453B CN201910877685.0A CN201910877685A CN112526453B CN 112526453 B CN112526453 B CN 112526453B CN 201910877685 A CN201910877685 A CN 201910877685A CN 112526453 B CN112526453 B CN 112526453B
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- 238000004364 calculation method Methods 0.000 description 3
- 238000013473 artificial intelligence Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
- G01S5/22—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
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Abstract
The invention discloses a user positioning method and an intelligent terminal, wherein the method is characterized in that the time point of each pickup on the intelligent terminal receiving sound is obtained, the sound is emitted by a remote controller when a user operates the remote controller, the user is positioned based on the position information of each pickup and the time point of receiving the sound, and the intelligent terminal performs related operation according to the position of the user by positioning the position of the user carrying the remote controller, so that the user does not need to frequently operate the remote controller, the intelligence of the terminal is improved, and convenience is brought to the user.
Description
Technical Field
The present invention relates to the field of electronic devices, and in particular, to a user positioning method and an intelligent terminal.
Background
Along with the rapid development of AI (artificial intelligence), in order to improve the user experience process, facilitate user operation and increase interest, the intellectualization of devices is becoming more and more important, and terminals in the prior art often execute corresponding operations through manual setting by users or timing operation instructions, so that intelligent television is regarded as an example, when people are in far or near positions during watching television, parameters such as backlight, definition and the like of people often need to be manually adjusted, and frequent manual adjustment operations bring a lot of inconvenience to users.
Accordingly, the prior art is still in need of improvement and development.
Disclosure of Invention
The invention aims to solve the technical problem of providing a user position positioning method based on a pickup and an intelligent terminal aiming at the defects in the prior art. Aims to solve at least one of the technical problems.
The technical scheme adopted for solving the technical problems is as follows:
the user positioning method is characterized by being applied to an intelligent terminal, wherein the intelligent terminal comprises at least three sound pick-up devices, and the positions of any two sound pick-up devices are inconsistent; the user positioning method comprises the following steps:
acquiring a time point when each pickup receives sound, wherein the sound is emitted by a remote controller when a user operates the remote controller;
And positioning the user based on the position information of each pickup and the time point when the sound is received.
The user positioning method, before the step of obtaining the time point when each pickup receives the sound, further includes:
establishing a three-dimensional coordinate system by taking a geometric center point of the intelligent terminal as a coordinate origin of the three-dimensional coordinate system;
And respectively storing three-dimensional coordinate information of each pickup in the three-dimensional coordinate system into a memory.
The user positioning method, wherein the user positioning method includes, at the same time as the step of acquiring the time point at which each of the sound pickup receives sound:
Acquiring a remote control code sent by the remote controller and received by each pickup;
and acquiring the time point of the sound sent by the remote controller according to the timestamp carried in the remote control code.
The user positioning method, wherein the step of positioning the user based on the position information of each pickup and the time point when the sound is received includes:
Calculating a distance value of the sound transmitted to each pickup according to a time point of the sound emitted by each pickup when the remote controller is operated, the acquired time point of the sound emitted by the remote controller and a preset sound transmission speed;
Calculating the position information of a remote controller according to the calculated distance value of the sound transmitted to each sound pick-up and the prestored position information of each sound pick-up;
And positioning the user position according to the calculated position information of the remote controller.
The user positioning method, wherein the step of calculating the position information of the remote controller according to the calculated distance value of the sound transmitted to each sound pickup and the prestored position information of each sound pickup comprises the following steps:
Selecting distance values of the sound transmitted to any three sound pickups in each sound pickup;
Acquiring identification information of the three selected sound pickup devices, and searching the position information of the three sound pickup devices from a memory according to the identification information;
And calculating the position information of the remote controller according to the distance values transmitted to the three sound pick-up devices by the sound and the position information of the three sound pick-up devices.
The user positioning method, wherein the step of calculating the position information of the remote controller according to the distance values transmitted to the three sound pickups by the sound and the position information of the three sound pickups comprises:
according to the corresponding relation between three distance values transmitted to the three sound pick-up devices by the sound and three dimensional coordinate difference values of the distances between the three sound pick-up devices and the remote controller, a three-dimensional linear equation set is established;
And respectively substituting the distance values of the sound transmitted to the three sound pick-up devices and the three-dimensional coordinate information of the three sound pick-up devices into the three-dimensional linear equation set to calculate the position information of the remote controller.
The user positioning method, wherein the step of positioning the user position according to the calculated position information of the remote controller comprises the following steps:
According to the calculated three-dimensional coordinate values of the remote controller and the coordinate origin of the three-dimensional coordinate system, calculating the vertical distance between the remote controller and the coordinate origin;
and positioning the user position according to the calculated vertical distance.
An intelligent terminal, wherein, include: at least three pickups and a data processing module; any two of the sound pick-up devices are inconsistent in position;
The sound pick-up is used for receiving sound generated when a user operates the remote controller;
The data processing module is used for acquiring the time point of each sound pickup when receiving the sound generated when the remote controller is operated by a user, and positioning the user based on the position information of each sound pickup and the time point of the sound generated when the remote controller is operated.
The intelligent terminal is characterized in that the number of the sound pick-up devices is three, and the intelligent terminal is an intelligent television.
The intelligent terminal, wherein, the intelligent terminal still includes: a storage module;
the data processing module is further used for establishing a three-dimensional coordinate system by taking the geometric center point of the intelligent terminal as the coordinate origin of the three-dimensional coordinate system;
The storage module is used for storing three-dimensional coordinate information of each pickup in the three-dimensional coordinate system.
The beneficial effects are that: compared with the prior art, the method for positioning the user and the intelligent terminal provided by the invention have the advantages that the time point of receiving the sound by each sound pick-up on the intelligent terminal is obtained, wherein the sound is emitted by the remote controller when the user operates the remote controller, and the user is positioned based on the position information of each sound pick-up and the time point of receiving the sound. The intelligent terminal can execute related operations according to the position of the user, frequent manual operations of the user are not needed, the intelligence of the terminal is improved, and convenience is brought to the user.
Drawings
FIG. 1 is a flow chart of a preferred embodiment of the user positioning method of the present invention;
FIG. 2 is a schematic spatial illustration of a three-point positioning method used in the method of the present invention;
FIG. 3 is a schematic spatial diagram of an example television set in the method of the present invention;
FIG. 4 is a flow chart of a preferred application embodiment of the user positioning method of the present invention;
fig. 5 is a functional block diagram of a preferred embodiment of the intelligent terminal of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear and clear, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a flowchart of a user positioning method according to a preferred embodiment of the present invention. As shown in fig. 1, the user positioning method according to the embodiment of the present invention includes:
Step 100, obtaining a time point when each pickup receives a sound, wherein the sound is emitted by a remote controller when a user operates the remote controller.
Before implementation, at least three sound pickups are required to be installed on the intelligent terminal in advance, the positions of any two sound pickups are inconsistent, the sound is used for collecting sound sent when a user operates the remote controller and is transmitted to a data processing module in the intelligent terminal, meanwhile, a three-dimensional coordinate system is established by taking the geometric center point of the intelligent terminal as the coordinate origin of the three-dimensional coordinate system, and three-dimensional coordinate information of each sound pickup in the three-dimensional coordinate system is stored in a memory of the intelligent terminal.
In a specific embodiment, three sound pickups may be symmetrically disposed on an upper surface of the intelligent terminal, and sound transmitted to three different directions from the same remote controller may be acquired.
In the embodiment of the invention, when a user operates the remote controller to control the intelligent terminal, the remote controller can emit corresponding sound, and when each pickup on the intelligent terminal acquires the sound emitted by the remote controller, the data processing module records the time point of the sound emitted by the remote controller received by each pickup.
It should be noted that, when the user controls the intelligent terminal through the remote controller, the remote controller will send out the corresponding remote control code, the intelligent terminal receives the remote control code to execute the corresponding operation, and the sound sent out by the user when operating the remote controller and the time when the remote control sends out the remote control code are synchronous, so the corresponding time stamp is carried in the corresponding remote control code when the intelligent terminal receives the remote control code, and the time point of the sound sent out by the remote control when the user operates the remote control is obtained according to the time stamp carried in the remote control code.
And step 200, positioning the user based on the position information of each pickup and the time point of receiving the sound.
According to the embodiment of the invention, according to the time point when each sound pickup receives the sound generated when the remote controller is operated and the time point when the sound generated by the remote controller is acquired when the remote controller is operated, the time spent by transmitting the sound generated by the remote controller to each sound pickup can be obtained, and the distance value of transmitting the sound generated by the remote controller to each sound pickup can be calculated by combining the preset sound transmission speed (340 m/s), and the position information of the remote controller can be calculated according to the calculated distance value of transmitting the sound generated by the remote controller to each sound pickup and the prestored position information of each sound pickup.
Because a plurality of pickups are installed on the intelligent terminal, only any three pickups need to be selected for calculation, and it is worth noting that any two installation positions of the pickups on the intelligent terminal are different, so that the time consumed for transmitting sound sent by the remote controller to each pickups is different, the distance value to each pickups is also different, the equipment identification number of the intelligent terminal is identified through the three pickups, and the position information of the corresponding three pickups is searched from the memory according to the equipment identification number of the pickups. The position information of the remote controller can be calculated by calculating the distance value of the sound transmitted to the three selected sound pick-up devices by the remote controller and acquiring the coordinate information stored in advance by the three selected sound pick-up devices and combining a three-point positioning method.
Specifically, according to the corresponding relation between three different distance values transmitted to the three selected sound pickups by the remote controller and three dimensional coordinate differences of distances between the three sound pickups and the remote controller, a three-dimensional linear equation set is established, the distance values transmitted to the three sound pickups by the remote controller and the three dimensional coordinate information of the three sound pickups are substituted into the three-dimensional linear equation set respectively, and the position information of the remote controller is calculated.
Further, according to the calculated three-dimensional coordinate values of the remote controller and the coordinate origin of the three-dimensional coordinate system, the vertical distance between the remote controller and the coordinate origin is calculated, and the geometric center point of the intelligent terminal is set to be the coordinate origin of the three-dimensional coordinate system in advance, namely, the vertical distance between the remote controller and the intelligent terminal is calculated, and then the specific position of the user is positioned according to the calculated vertical distance, so that the position of the user carrying the remote controller is obtained.
The following uses three sound pickups to describe in more detail how to locate the user position by using the three-point locating method:
As shown in fig. 2, the position of a certain device is set as an origin O, three sound pickups are mounted on the origin O, the positions are A, B and C respectively, and the position of a remote controller of a matching device is set as G. When a user controls the device through the remote controller, sound emitted by the remote controller is acquired by a pickup on the device. Knowing the speed of sound propagation in the atmosphere and the time that the sound reaches the pick-up at A, B and C from point G, the distances from point G to A, B and C can be derived. The locations of points A, B and C are known, from which the location of point G, i.e., the relative location of the user to the device, can be calculated.
Specifically, three points which are not overlapped with each other on the three-dimensional space based on the original point O (0, 0) are set to be A (x 1, y1, z 1), B (x 2, y2, z 2) and C (x 3, y 3.z3) respectively, namely three-dimensional coordinate values of three sound pick-ups on a coordinate system established by a terminal, and the other point is set to be G (x, y, z), namely the position of a user and the position of a remote controller. The distances from the G point to the A, B, C points are known as L1, L2 and L3, and the position of the G point is calculated.
A. the vectors from B, C three points to G point are respectively:
The distances from the G point to the A, B, C points are L1, L2 and L3 respectively, and then the following are:
L1==/>
L2==/>
L3==/>
The method comprises the following steps:
The three phases are subtracted to obtain:
Simplifying and obtaining:
Let matrix M, N be:
；
；
Then there are: ；
if M is reversible, let its inverse matrix be The values of x, y and z can be found, i.e. the position of the G point satisfies:
if the origin O is on the plane determined by the three points A, B and C, M is irreversible, where z1=z2=z3=0, so the above equation can be simplified:
Let matrix R, S be:
Then there are:
If R is reversible, the inverse matrix is set as The values of x and y are easily determined:
Substituting x and y into The value of z is obtained to obtain the position (x, y, z) of the G point.
Further, the distance from the point G to the origin O is known as:
The intelligent terminal can be an intelligent television, firstly, sound collectors are arranged on the television, the best installation position is the middle position above the machine body and the middle positions on two sides, the space position coordinates of the three sound collectors are stored in a memory of the television, after the user position carrying a remote controller is obtained through calculation, the intelligent television executes default operation based on the user position, the default operation is preset in advance by the user, different operations are executed according to the adjustment of the user position, for example, when the user position is judged to be close to the television, the television volume, backlight and brightness are weakened, when the user position is far from the television, the television volume, the backlight and the brightness are increased, the adjustment size can be preset in advance by the user, the position of the user is positioned through sound emitted when the user operates the remote controller, and accordingly the intelligent terminal executes corresponding operations according to the difference of the user position.
Referring to fig. 3, 3 sound pickups A, B and C are mounted on the frame of the tv screen, the origin O is the geometric center of the tv screen, and G is the remote control.
Let the coordinates of the pickups be a (0,30,0), B (-40, -30, 0), and C (40, -30, 0), respectively, the distances l1=220, l2=200, and l3=180 from the remote to the pickups. Because the origin O is on the plane defined by the microphones A, B and C, the substitution pattern isThe method comprises the following steps of:
Solving to obtain x is 47.5, y is-115, and substituting the obtained product into formula 26 to obtain . Let z be approximately equal to 118.5 if the front of the television screen is positive, so that the position of the remote control G is known as: (47.5, -115, 118.5), further knowing that the viewer is in front of and to the right of the geometric center point O of the television screen, a vertical distance to the television screen of about 118.5, a distance to the geometric center point O of the television screen of about:
It is conceivable that if more than three sound pickups are provided on the intelligent terminal, the distance between the remote controller and the intelligent terminal can be calculated only by the time of the sound acquired by the three sound pickups and the position information of the three sound pickups in the calculation, so that when the plurality of sound pickups are provided in the intelligent terminal, three sound time points acquired by the three sound time points can be arbitrarily selected for calculating the position information of the remote controller, and the position of the user can be located according to the position of the remote controller when the user operates the remote controller.
Referring to fig. 4, a flowchart of a preferred application embodiment of the user positioning method of the present invention specifically includes the following steps:
S1, a user holds a remote controller to make a sound, and the remote controller sends out a remote control code;
S2, each pickup receives sound generated when a user operates the remote controller, and a time point for receiving the sound is acquired;
S3, receiving a remote control code sent by a remote controller, and acquiring a time stamp in the remote control code to obtain a time point of sound sent when the remote controller is operated at the time point of the remote control code sent by the remote controller;
S4, calculating the distance value of the sound transmitted to any three sound pickups according to the time point of the sound transmitted by each sound pickup when the remote controller is operated, the acquired time point of the sound transmitted by the remote controller and the preset sound transmission speed;
S5, acquiring the identification information of any three sound pick-up devices, searching the position information of the three sound pick-up devices from the memory according to the identification information, executing S6 if the acquisition is successful, otherwise returning to S2;
S6, positioning the position of the user carrying the remote controller according to the receiving time of the sound sent by the remote controller, the sending time of the sound sent by the remote controller and the position information of the three pickups searched from the memory.
From the above, the invention provides a user positioning method, which aims to position the position of a user by sound emitted by a remote controller when the remote controller is operated by the user through a sound pick-up, and an intelligent terminal executes corresponding operation according to different positions of the user without the need of manual operation of the user, so that the intelligence of the terminal is improved, and convenience is brought to the user.
Based on the above method embodiment, as shown in fig. 5, the present invention further provides an intelligent terminal 50, where the intelligent terminal includes:
a sound pickup 510 for receiving sound emitted when a user operates the remote controller; the function of which is as described in step S1.
The data processing module 520 is configured to obtain a time point when each of the sound pickup devices receives a sound generated when the remote controller is operated by a user, and locate the user based on the position information of each of the sound pickup devices and the time point when the sound generated when the remote controller is operated is received; the function of which is as described in step S2.
Further, the number of the sound pickup devices arranged on the intelligent terminal is three, and the intelligent terminal is an intelligent television.
The data processing module is further used for establishing a three-dimensional coordinate system by taking the geometric center point of the intelligent terminal as the coordinate origin of the three-dimensional coordinate system.
Further, the intelligent terminal further comprises: the storage module is used for storing three-dimensional coordinate information of each pickup in the three-dimensional coordinate system, and the intelligent terminal comprises the user positioning method, and the method is specifically described above.
In summary, compared with the prior art, the method for positioning the user and the intelligent terminal provided by the invention have the advantages that the time point of receiving the sound by each sound pick-up on the intelligent terminal is obtained, wherein the sound is the sound emitted by the remote controller when the user operates the remote controller, the user is positioned based on the position information of each sound pick-up and the time point of receiving the sound, and the intelligent terminal can execute related operation according to the position of the user by positioning the position of the user carrying the remote controller, so that the user does not need to frequently operate the terminal, the intelligence of the terminal is improved, and convenience is brought to the user.
Of course, those skilled in the art will appreciate that implementing all or part of the above-described methods may be implemented by a computer program for instructing relevant hardware (e.g., a processor, a controller, etc.), where the program may be stored in a computer-readable storage medium, and where the program may include the steps of the above-described method embodiments when executed. The storage medium may be a memory, a magnetic disk, an optical disk, or the like.
It is to be understood that the invention is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.
Claims (8)
1. The user positioning method is characterized by being applied to an intelligent terminal, wherein the intelligent terminal comprises at least three sound pick-up devices, and the positions of any two sound pick-up devices are inconsistent; the user positioning method comprises the following steps:
acquiring a time point when each pickup receives sound, wherein the sound is emitted by a remote controller when a user operates the remote controller;
Positioning the user based on the position information of each sound pick-up and the time point when the sound is received;
simultaneously with the step of acquiring the time point when each of the sound pickup receives sound, the user positioning method includes:
Acquiring a remote control code sent by the remote controller and received by each pickup;
acquiring a time point of the sound sent by the remote controller according to the timestamp carried in the remote control code;
The step of locating the user based on the position information of each of the sound pickup and the time point when the sound is received includes:
Calculating a distance value of the sound transmitted to each pickup according to a time point of the sound emitted by each pickup when the remote controller is operated, the acquired time point of the sound emitted by the remote controller and a preset sound transmission speed;
Calculating the position information of a remote controller according to the calculated distance value of the sound transmitted to each sound pick-up and the prestored position information of each sound pick-up;
positioning the user position according to the calculated position information of the remote controller;
The distance value transmitted to the three selected sound pick-up devices by the sound sent by the remote controller is calculated, coordinate information stored in advance by the three selected sound pick-up devices is obtained, and the position information of the remote controller is calculated by combining a three-point positioning method.
2. The user positioning method according to claim 1, wherein before the step of acquiring the time point at which each of the sound pickup receives sound, further comprising:
establishing a three-dimensional coordinate system by taking a geometric center point of the intelligent terminal as a coordinate origin of the three-dimensional coordinate system;
And respectively storing three-dimensional coordinate information of each pickup in the three-dimensional coordinate system into a memory.
3. The user positioning method according to claim 1, wherein the step of calculating the position information of the remote controller based on the calculated distance value of the sound transmitted to each of the sound pickup and the prestored position information of each of the sound pickup includes:
Selecting distance values of the sound transmitted to any three sound pickups in each sound pickup;
Acquiring identification information of the three selected sound pickup devices, and searching the position information of the three sound pickup devices from a memory according to the identification information;
And calculating the position information of the remote controller according to the distance values transmitted to the three sound pick-up devices by the sound and the position information of the three sound pick-up devices.
4. The user positioning method according to claim 3, wherein the step of calculating the position information of the remote controller based on the distance values of the sound transmitted to the three sound pickups and the position information of the three sound pickups includes:
according to the corresponding relation between three distance values transmitted to the three sound pick-up devices by the sound and three dimensional coordinate difference values of the distances between the three sound pick-up devices and the remote controller, a three-dimensional linear equation set is established;
And respectively substituting the distance values of the sound transmitted to the three sound pick-up devices and the three-dimensional coordinate information of the three sound pick-up devices into the three-dimensional linear equation set to calculate the position information of the remote controller.
5. The user positioning method according to claim 1, wherein the step of positioning the user position based on the calculated position information of the remote controller comprises:
According to the calculated three-dimensional coordinate values of the remote controller and the coordinate origin of the three-dimensional coordinate system, calculating the vertical distance between the remote controller and the coordinate origin;
and positioning the user position according to the calculated vertical distance.
6. An intelligent terminal, characterized by comprising: at least three pickups and a data processing module; any two of the sound pick-up devices are inconsistent in position;
The sound pick-up is used for receiving sound generated when a user operates the remote controller;
The data processing module is used for acquiring the time point of the sound emitted by each sound pickup when the remote controller is operated by a user, and positioning the user based on the position information of each sound pickup and the time point of the sound emitted by the remote controller;
the data processing module is also used for acquiring remote control codes sent by the remote controllers and received by each pickup; acquiring a time point of the sound sent by the remote controller according to the timestamp carried in the remote control code;
Calculating a distance value of the sound transmitted to each pickup according to a time point of the sound emitted by each pickup when the remote controller is operated, the acquired time point of the sound emitted by the remote controller and a preset sound transmission speed;
Calculating the position information of a remote controller according to the calculated distance value of the sound transmitted to each sound pick-up and the prestored position information of each sound pick-up;
positioning the user position according to the calculated position information of the remote controller;
The distance value transmitted to the three selected sound pick-up devices by the sound sent by the remote controller is calculated, coordinate information stored in advance by the three selected sound pick-up devices is obtained, and the position information of the remote controller is calculated by combining a three-point positioning method.
7. The intelligent terminal of claim 6, wherein the number of the sound pick-up devices is three, and the intelligent terminal is an intelligent television.
8. The intelligent terminal of claim 6, wherein the intelligent terminal further comprises: a storage module;
the data processing module is further used for establishing a three-dimensional coordinate system by taking the geometric center point of the intelligent terminal as the coordinate origin of the three-dimensional coordinate system;
The storage module is used for storing three-dimensional coordinate information of each pickup in the three-dimensional coordinate system.
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