CN117008075A - Wireless gesture acquisition method and system based on microwave antenna array - Google Patents
Wireless gesture acquisition method and system based on microwave antenna array Download PDFInfo
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Classifications
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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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
- G01S7/411—Identification of targets based on measurements of radar reflectivity
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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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
- G01S7/417—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section involving the use of neural networks
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/60—Type of objects
- G06V20/64—Three-dimensional objects
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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
Abstract
The invention relates to the field of signal analysis, and discloses a wireless gesture acquisition method based on a microwave antenna array, which comprises the following steps: after transmitting a microwave signal to a gesture area to be acquired, receiving the echo signal, calculating echo signal delay, and positioning an echo point according to the echo delay; calculating an echo angle according to the echo point, calculating an excitation phase of an echo signal according to the echo angle, and identifying a motion track of a gesture to be acquired according to the excitation phase; constructing an array space of microwave signals, mapping echo signals into the array space to obtain space signals, calculating phase differences of the echo signals based on the space signals, and identifying motion amplitudes of gestures to be acquired according to the phase differences; and constructing a three-dimensional effect diagram of the gesture to be acquired according to the motion track and the motion amplitude, identifying the motion characteristics of the gesture to be acquired by utilizing the three-dimensional effect diagram, and analyzing the gesture information of the gesture to be acquired according to the motion characteristics. The method and the device can improve the accuracy of wireless gesture analysis.
Description
Technical Field
The invention relates to the field of signal analysis, in particular to a wireless gesture acquisition method and system based on a microwave antenna array.
Background
Gestures are one way of signal transmission, are applied to various fields such as traffic police in traffic, often use gestures to command traffic, and have more purposes in navigation and troops, so that the gesture information analysis method has great significance for the gesture information of the collector of the gestures.
At present, a gesture acquisition method is generally based on a visual network, and information to be transmitted by a gesture is obtained by collecting gesture images and analyzing the gesture images, however, in some scenes, for example, the acquired images are not clear enough due to more interference factors at sea, so that the gesture analysis is not accurate enough.
Disclosure of Invention
In order to solve the technical problems, the invention provides a wireless gesture acquisition method and a wireless gesture acquisition system based on a microwave antenna array, which improve the accuracy of wireless gesture analysis.
In a first aspect, the present invention provides a wireless gesture acquisition method based on a microwave antenna array, including:
after transmitting a microwave signal to a gesture area to be acquired by utilizing a microwave antenna array device, receiving an echo signal reflected back into the microwave antenna array device from the gesture area to be acquired, calculating echo delay of the echo signal, and positioning an echo point of the gesture area to be acquired according to the echo delay;
According to the echo point, calculating an echo angle of the echo signal, calculating an excitation phase of the echo signal according to the echo angle, and identifying a motion track of a gesture to be acquired in the gesture area to be acquired according to the excitation phase;
constructing an array space of the microwave signals, mapping the echo signals into the array space to obtain space signals, calculating phase differences of the echo signals based on the space signals, and identifying the motion amplitude of the gesture to be acquired according to the phase differences;
and constructing a three-dimensional effect diagram of the gesture to be acquired according to the motion track and the motion amplitude, identifying the motion characteristics of the gesture to be acquired by utilizing the three-dimensional effect diagram, and analyzing gesture information of the gesture to be acquired according to the motion characteristics.
In a possible implementation manner of the first aspect, the calculating, according to the echo point, an echo angle of the echo signal includes:
constructing a rectangular coordinate system of the echo point;
taking the microwave antenna array device as a coordinate origin of the echo point, and constructing a rectangular coordinate system of the echo point by taking the coordinate origin as a center;
Connecting the echo point with the origin of coordinates in the rectangular coordinate system to obtain an echo straight line;
and calculating an included angle between the echo straight line and a horizontal axis in the rectangular coordinate system to obtain an echo angle.
In a possible implementation manner of the first aspect, the calculating an excitation phase of the echo signal includes:
constructing a rectangular waveguide of the echo signals, distributing the echo signals in the rectangular waveguide, and calculating excitation phases of the echo signals distributed in the rectangular waveguide by using the following formula:
；
wherein,represents the excitation phase +.>Vacuum dielectric constant indicative of said echo signal, < >>Vacuum permeability indicative of said echo signal, +.>、/>、/>Respectively representing the respective side lengths of the rectangles in the rectangular waveguide, a represents the derivative +_ of the echo signal in the rectangular waveguide>The signal strength of the side, b, represents the derivative +_of the echo signal in the rectangular wave>Signal intensity of edge,/">Representing the echo signal at the rectangular wave derivative +.>Signal strength of the edge.
In a possible implementation manner of the first aspect, the identifying a motion trajectory of the gesture to be acquired in the gesture area to be acquired according to the excitation phase includes:
Identifying a phase point in the excitation phase, and inquiring an excitation node corresponding to the phase point;
constructing a motion curve graph of the gesture to be acquired according to the phase point and the excitation node;
and determining the motion trail of the gesture to be acquired according to the motion curve graph.
In a possible implementation manner of the first aspect, the calculating the phase difference of the echo signals based on the spatial signal includes:
converting the spatial signal into a digital signal, and calculating the phase maximum value of the echo signal according to the digital signal by using the following formula:
；
wherein,represents the phase maximum, +.>Representing the number of array element antennas in the X-axis in the three-dimensional coordinate space corresponding to the digital signal,/->Representing the number of array element antennas in the Y-axis in the three-dimensional coordinate space corresponding to the digital signal,digital signal value representing the echo signal at the ith array element antenna,/for the antenna>Digital signal value representing the echo signal at the j-th array element antenna,/for the antenna>Representing the spacing of the array element antennas in the X-axis in said three-dimensional coordinate space,/for each of the array element antennas>Representing the spacing of the array element antennas in the Y-axis in said three-dimensional coordinate space,/for each of the array element antennas>Represents the echo angle, +. >Representing a signal emission angle corresponding to the echo signal;
the phase minimum of the echo signal is calculated using the following formula:
；
wherein,representing the minimum value of phase +.>Representing the correspondence of the digital signalThe number of array element antennas in the X-axis in the three-dimensional coordinate space,/->Representing the number of array element antennas in the Y-axis in the three-dimensional coordinate space corresponding to the digital signal,digital signal value representing the echo signal at the ith array element antenna,/for the antenna>Digital signal value representing the echo signal at the j-th array element antenna,/for the antenna>Representing the spacing of the array element antennas in the X-axis in said three-dimensional coordinate space,/for each of the array element antennas>Representing the spacing of the array element antennas in the Y-axis in said three-dimensional coordinate space,/for each of the array element antennas>Represents the echo angle, +.>Representing a signal emission angle corresponding to the echo signal;
the phase difference of the echo signals is calculated using the following formula:
；
wherein,indicating phase difference>Represents the phase maximum, +.>Representing phase minimaThe digital signal refers to a discrete signal for describing the spatial distribution state of the signal.
In a possible implementation manner of the first aspect, the identifying, according to the phase difference, a motion amplitude of the gesture to be acquired includes:
Generating a difference parameter of the phase difference;
inputting the difference parameter into a pre-constructed motion function;
and calculating the motion amplitude of the gesture to be acquired by utilizing the motion function and combining the difference parameter.
In a possible implementation manner of the first aspect, the constructing the three-dimensional effect graph level of the gesture to be acquired according to the motion trail and the motion amplitude includes:
constructing a three-dimensional model of the gesture to be acquired;
converting the motion trail into a trail, and distributing the trail in the three-dimensional model to obtain a trail distributed in the three-dimensional model;
taking the motion amplitude as the peaks and troughs distributed to the track lines in the three-dimensional model, and according to the distribution, distributing the motion amplitude to track nodes of the track lines in the three-dimensional model;
and carrying out line painting on the track lines distributed in the three-dimensional model to obtain the three-dimensional effect graph of the gesture to be acquired.
In a possible implementation manner of the first aspect, the identifying, by using the three-dimensional effect map, a motion feature of the gesture to be acquired includes:
simulating gesture actions of the gesture to be acquired by utilizing the three-dimensional effect graph;
Making the gesture action into a dynamic graph;
and extracting dynamic characteristics of the dynamic graph, and determining motion characteristics of the gesture to be acquired based on the dynamic characteristics.
In a possible implementation manner of the first aspect, the analyzing gesture information of the gesture to be acquired according to the motion feature includes:
extracting action semantics of the gesture to be acquired from the motion characteristics;
and determining gesture information of the gesture to be acquired based on the action semantics.
In a second aspect, the present invention provides a wireless gesture acquisition system based on a microwave antenna array, the system comprising:
the echo positioning module is used for receiving echo signals reflected back into the microwave antenna array device from the gesture area to be acquired after transmitting microwave signals to the gesture area to be acquired by utilizing the microwave antenna array device, calculating echo delay of the echo signals, and positioning echo points of the gesture area to be acquired according to the echo delay;
the motion trail analysis module is used for calculating the echo angle of the echo signal according to the echo point, calculating the excitation phase of the echo signal according to the echo angle, and identifying the motion trail of the gesture to be acquired in the gesture area to be acquired according to the excitation phase;
The motion amplitude recognition module is used for constructing an array space of the microwave signals, mapping the echo signals into the array space to obtain space signals, calculating phase differences of the echo signals based on the space signals, and recognizing the motion amplitude of the gesture to be acquired according to the phase differences;
the gesture information analysis module is used for constructing a three-dimensional effect diagram of the gesture to be acquired according to the motion track and the motion amplitude, identifying the motion characteristics of the gesture to be acquired by utilizing the three-dimensional effect diagram, and analyzing gesture information of the gesture to be acquired according to the motion characteristics.
Compared with the prior art, the technical principle and beneficial effect of this scheme lie in:
according to the scheme, after a microwave antenna array device is used for transmitting a microwave signal to a gesture area to be acquired, an echo signal reflected from the gesture area to be acquired back to the microwave antenna array device is received, so that the microwave signal of the gesture area to be acquired can be obtained, further gesture analysis is carried out according to the microwave signal, the distance between a target area and the transmitting area of the device can be calculated by calculating the echo delay of the echo signal, and further a reliable basis can be provided for the accurate position of a target point to be positioned subsequently; further, according to the embodiment of the invention, the signal distribution condition of the echo signals of the gesture area to be acquired in the microwave antenna array device can be known by calculating the echo angle of the echo signals according to the echo points, the influence of other external factors on an analysis result is further avoided, the motion amplitude of the gesture to be acquired when the gesture to be acquired is transmitted can be known by calculating the excitation phase of the echo signals according to the echo angle, the array space of the microwave signals is constructed, the echo signals are mapped into the array space, the distribution condition of each array element antenna of the echo signals of the gesture to be acquired in the microwave antenna array device can be known by obtaining space signals, the motion amplitude of the gesture to be acquired can be recognized according to the phase difference, the change amplitude of each gesture change of the gesture to be acquired can be further analyzed, the gesture signal of the gesture to be acquired can be further analyzed according to the change amplitude, and the three-dimensional effect map of the gesture to be acquired can be more beneficial to the information to be displayed and the gesture to be acquired. Therefore, the wireless gesture acquisition method based on the microwave antenna array provided by the embodiment of the invention can improve the accuracy of wireless gesture analysis.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic flow chart of a wireless gesture collection method based on a microwave antenna array according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a wireless gesture acquisition system based on a microwave antenna array according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an internal structure of an electronic device for implementing a wireless gesture collection method based on a microwave antenna array according to an embodiment of the present invention.
Detailed Description
It should be understood that the detailed description is presented by way of example only and is not intended to limit the invention.
The embodiment of the invention provides a wireless gesture acquisition method based on a microwave antenna array, and an execution subject of the wireless gesture acquisition method based on the microwave antenna array comprises, but is not limited to, at least one of a server, a terminal and the like which can be configured to execute the method provided by the embodiment of the invention. In other words, the wireless gesture collection method based on the microwave antenna array may be performed by software or hardware installed in a terminal device or a server device, where the software may be a blockchain platform. The service end includes but is not limited to: a single server, a server cluster, a cloud server or a cloud server cluster, and the like. The server may be an independent server, or may be a cloud server that provides cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, content delivery networks (Content Delivery Network, CDN), and basic cloud computing services such as big data and artificial intelligence platforms.
Referring to fig. 1, a flow chart of a wireless gesture collection method based on a microwave antenna array according to an embodiment of the invention is shown. The wireless gesture acquisition method based on the microwave antenna array depicted in fig. 1 comprises the following steps S1-S4:
s1, after a microwave antenna array device is used for transmitting a microwave signal to a gesture area to be acquired, receiving an echo signal reflected back into the microwave antenna array device from the gesture area to be acquired, calculating echo delay of the echo signal, and positioning an echo point of the gesture area to be acquired according to the echo delay.
According to the embodiment of the invention, after the microwave antenna array device is used for transmitting the microwave signals to the gesture area to be acquired, the echo signals reflected back into the microwave antenna array device from the gesture area to be acquired can be received, so that the microwave signals of the gesture area to be acquired can be obtained, and further gesture analysis is performed according to the microwave signals, wherein the microwave antenna array device refers to an aggregate formed by a plurality of microwave antennas, each microwave antenna is an independent transmitting and receiving unit, and the microwave antennas can be connected together in a specific mode to form an array, and the echo signals refer to signals returned to the microwave device by the target area after the signals are transmitted to the target area by the microwave device.
Furthermore, the embodiment of the invention can calculate the distance between the target area and the device transmitting area by calculating the echo delay of the echo signal, thereby providing a reliable basis for the accurate position of the subsequent positioning target point, wherein the echo delay is the time interval of returning the signal from the target point when the signal is transmitted to the target point.
Optionally, the calculating the echo delay of the echo signal is obtained by calculating a difference between a time point of transmitting a signal by the microwave antenna array device and a time point of receiving the echo signal, for example, the time point of transmitting the signal is 12:30:10, echo signal time points are 12:30:30, the echo delay is 20s.
According to the embodiment of the invention, the specific position of the gesture to be acquired can be determined by positioning the echo point of the gesture area to be acquired according to the echo delay, so that the echo signal analysis is carried out on the point, and other signal interference is avoided, wherein the echo point is the gesture point to be acquired.
Optionally, the echo point of the gesture area to be acquired is positioned according to the echo delay, the distance between the echo point and the microwave antenna array device is calculated according to the echo delay through a millimeter wave radar, and infrared rays are emitted to the area according to the distance to position the human body, so that the corresponding position of the echo point is obtained.
S2, calculating an echo angle of the echo signal according to the echo point, calculating an excitation phase of the echo signal according to the echo angle, and identifying a motion track of the gesture to be acquired in the gesture area to be acquired according to the excitation phase.
According to the embodiment of the invention, the signal distribution condition of the echo signals of the gesture area to be acquired in the microwave antenna array device can be known by calculating the echo angle of the echo signals according to the echo points, so that the influence of other external factors on an analysis result is further avoided, wherein the echo angle refers to the angle of the echo signals of the target area to the signal transmitting device.
As one embodiment of the present invention, the calculating the echo angle of the echo signal according to the echo point includes: and constructing a rectangular coordinate system of the echo point, taking the microwave antenna array device as a coordinate origin of the echo point, constructing the rectangular coordinate system of the echo point by taking the coordinate origin as a center, connecting the echo point with the coordinate origin in the rectangular coordinate system to obtain an echo straight line, and calculating an included angle between the echo straight line and a horizontal axis in the rectangular coordinate system to obtain an echo angle.
Wherein the rectangular coordinate system refers to a position and a direction for describing a spatial midpoint, and the origin of coordinates refers to a center point of the coordinate system, which is generally defined as (0, 0).
Optionally, the rectangular coordinate system is generated through a coordinate tool generated by java language.
Further, according to the embodiment of the invention, the motion amplitude of the gesture to be acquired can be known when the gesture is transmitted by calculating the excitation phase of the echo signal according to the echo angle, wherein the excitation phase is used for reflecting the motion frequency or period of the object.
As an embodiment of the present invention, the calculating the excitation phase of the echo signal includes: constructing a rectangular waveguide of the echo signals, distributing the echo signals in the rectangular waveguide, and calculating excitation phases of the echo signals distributed in the rectangular waveguide by using the following formula:
；
wherein,represents the excitation phase +.>Vacuum dielectric constant indicative of said echo signal, < >>Vacuum permeability indicative of said echo signal, +.>、/>、/>Respectively representing the respective side lengths of the rectangles in the rectangular waveguide, a represents the derivative +_ of the echo signal in the rectangular waveguide>The signal strength of the side, b, represents the derivative +_of the echo signal in the rectangular wave >Signal intensity of edge,/">Representing the echo signal at the rectangular wave derivative +.>Signal strength of the edge.
The rectangular waveguide refers to a rectangular space used for reflecting the magnetic field distribution condition of signals.
Optionally, the rectangular waveguide is constructed by cst studio suite software, and the echo signals are distributed in the rectangular waveguide by a signal filter.
Furthermore, in the embodiment of the present invention, the motion trail of the gesture to be acquired in the gesture area to be acquired is identified according to the excitation phase, so that the change condition of the gesture to be acquired in the acquisition time can be known, and an important basis is provided for subsequent analysis of gesture information, wherein the motion trail refers to the condition that the description object changes with time in space.
As one embodiment of the present invention, the identifying the motion trail of the gesture to be acquired in the gesture area to be acquired according to the excitation phase includes: and identifying a phase point in the excitation phase, inquiring an excitation node corresponding to the phase point, constructing a motion curve graph of the gesture to be acquired according to the phase point and the excitation node, and determining a motion track of the gesture to be acquired according to the motion curve graph.
The phase points refer to each phase point of an excitation phase in space, the excitation node refers to a time node generated by the phase point, and the motion curve graph refers to an image of recorded data changing along with time.
Optionally, the phase point is obtained by querying an echo signal distribution diagram received by the microwave antenna array, the excitation node is obtained by querying a time point of the echo signal received by the microwave antenna array, the diagram is constructed by excel, and according to the diagram, the motion track of the gesture to be acquired is determined by observing a curve in the diagram according to the curve trend of the excitation node.
S3, constructing an array space of the microwave signals, mapping the echo signals into the array space to obtain space signals, calculating phase differences of the echo signals based on the space signals, and recognizing motion amplitudes of the gestures to be acquired according to the phase differences.
According to the embodiment of the invention, the array space of the microwave signals is constructed, the echo signals are mapped into the array space, so that the spatial signals can be obtained, and the distribution condition of the echo signals of the gesture to be acquired in each array element antenna in the microwave antenna array device can be known, wherein the array space refers to a three-dimensional coordinate space constructed according to each array element antenna in the microwave antenna array device.
Optionally, the array space of microwave signals is constructed by autocad.
Further, according to the embodiment of the invention, the relative position of the gesture to be acquired during movement can be known by calculating the phase difference of the echo signals based on the spatial signals, for example, the gesture moves from bottom to top, wherein the phase difference refers to the relative phase difference or the time difference of two signal waves.
As an embodiment of the present invention, the calculating the phase difference of the echo signals based on the spatial signals includes: converting the spatial signal into a digital signal, and calculating the phase maximum value of the echo signal according to the digital signal by using the following formula:
；
wherein,represents the phase maximum, +.>Representing the number of array element antennas in the X-axis in the three-dimensional coordinate space corresponding to the digital signal,/->Representing the number of array element antennas in the Y-axis in the three-dimensional coordinate space corresponding to the digital signal,digital signal value representing the echo signal at the ith array element antenna,/for the antenna>Digital signal value representing the echo signal at the j-th array element antenna,/for the antenna>Representing the spacing of the array element antennas in the X-axis in said three-dimensional coordinate space,/for each of the array element antennas>Representing the spacing of the array element antennas in the Y-axis in said three-dimensional coordinate space,/for each of the array element antennas >Represents the echo angle, +.>Representing a signal emission angle corresponding to the echo signal;
the phase minimum of the echo signal is calculated using the following formula:
；
wherein,representing the minimum value of phase +.>Representing the number of array element antennas in the X-axis in the three-dimensional coordinate space corresponding to the digital signal,/->Representing the number of array element antennas in the Y-axis in the three-dimensional coordinate space corresponding to the digital signal,digital signal value representing the echo signal at the ith array element antenna,/for the antenna>Representation ofThe digital signal value of the echo signal at the j-th array element antenna is +.>Representing the spacing of the array element antennas in the X-axis in said three-dimensional coordinate space,/for each of the array element antennas>Representing the spacing of the array element antennas in the Y-axis in said three-dimensional coordinate space,/for each of the array element antennas>Represents the echo angle, +.>Representing a signal emission angle corresponding to the echo signal;
the phase difference of the echo signals is calculated using the following formula:
；
wherein,indicating phase difference>Represents the phase maximum, +.>Representing the phase minima, the digital signal refers to a discrete signal that describes the state of the signal in space.
Optionally, the converting the spatial signal into a digital signal is through binary code conversion.
Further, according to the embodiment of the invention, the motion amplitude of the gesture to be acquired can be recognized according to the phase difference, so that the gesture signal of the gesture to be acquired can be analyzed according to the change amplitude, and the information expressed by the left hand swinging from left to the middle of the body and swinging to right hand in a traffic command scene is different. The motion amplitude refers to the change amplitude of the object in the space motion, if the object moves from the point a to the point b, the distance difference between the point b and the point a is the motion amplitude.
As one embodiment of the present invention, the identifying the motion amplitude of the gesture to be acquired according to the phase difference includes: and generating a difference parameter of the phase difference, inputting the difference parameter into a pre-constructed motion function, and calculating the motion amplitude of the gesture to be acquired by utilizing the motion function and combining the difference parameter. The difference parameter refers to a parameter converted by the phase difference, and the motion function refers to a program created to realize or complete a certain task.
Optionally, the difference parameter is generated by java, the motion amplitude of the gesture to be acquired is calculated by combining the motion function and the difference parameter, and the motion amplitude is calculated by a preset parameter corresponding relation, if the phase difference is 2, the corresponding actual gesture motion distance is 20cm.
S4, constructing a three-dimensional effect diagram of the gesture to be acquired according to the motion track and the motion amplitude, identifying motion characteristics of the gesture to be acquired by utilizing the three-dimensional effect diagram, and analyzing gesture information of the gesture to be acquired according to the motion characteristics.
According to the embodiment of the invention, the three-dimensional effect graph of the gesture to be acquired is constructed according to the motion trail and the motion amplitude, so that the gesture information to be acquired can be clearly displayed, and analysis of the information to be transmitted by the gesture to be acquired is more facilitated. The three-dimensional effect graph refers to a computer-generated image, and can vividly present the spatial information of the object.
As one embodiment of the present invention, the constructing the three-dimensional effect map of the gesture to be acquired according to the motion track and the motion amplitude includes: the three-dimensional model of the gesture to be acquired is constructed, the motion trail is converted into a trail, the trail is distributed in the three-dimensional model to obtain a trail distributed in the three-dimensional model, the motion amplitude is used as the wave crest and the wave trough of the trail distributed in the three-dimensional model, and according to the trail nodes of the trail distributed in the three-dimensional model, the trail distributed in the three-dimensional model is subjected to line painting to obtain the three-dimensional effect graph of the gesture to be acquired.
The three-dimensional model is used for describing mathematical representation of the shape structure and appearance of an object or a scene in space, the track line is used for describing a line of a running track, the origin of the line represents the starting point of the movement, the end point of the line represents the shape formed by the end point line of the movement and represents the track of the movement, the crest is the highest point of the track line, the trough is the lowest point of the track line, the track line is colored, the change of the gesture to be acquired is represented by the change of color, the track node is the node of the track line, if the track line moves from the point a to the point b, the line ab is a track node, and if the track line moves from the point b to the point c, the line bc is a track node.
Optionally, the three-dimensional model is built through a matlab modeling tool, the motion track is converted into a conversion track line, the conversion script is generated through java, the line painting is painted through a 3d rendering tool, if the initial point of a first track line is a, the initial point of a second track line is c, and the end point of a third track line is d, the first track line is painted into red, and if the end point of the second track line is b, the first track line is painted into yellow.
Further, according to the embodiment of the invention, the motion characteristics of the gesture to be acquired can be known by utilizing the motion characteristics of the gesture to be acquired, wherein the motion characteristics refer to characteristics or properties describing an object or a motion system.
As one embodiment of the present invention, the identifying the motion feature of the gesture to be acquired by using the three-dimensional effect graph includes: and simulating the gesture motion of the gesture to be acquired by using the three-dimensional effect graph, manufacturing the gesture motion into a dynamic graph, extracting dynamic characteristics of the dynamic graph, and determining the motion characteristics of the gesture to be acquired based on the dynamic characteristics.
Wherein, the dynamic graph refers to animation produced by simulating the real action effect of the object.
Optionally, the gesture is made into a dynamic graph, the dynamic feature of the dynamic graph is extracted through a convolutional neural network according to the dynamic graph through a blunder software 3d animation making function, and the dynamic feature of the dynamic graph is obtained through analysis of a feature analysis model obtained through deep learning model through a large amount of historical gesture data training according to the dynamic graph.
According to the embodiment of the invention, the gesture information of the gesture to be acquired can be analyzed according to the motion characteristics, so that the information which is required to be transmitted to the user of the microwave antenna array device by the gesture to be acquired can be known, and further the relative operation can be performed.
As one embodiment of the present invention, the analyzing the gesture information of the gesture to be acquired according to the motion feature includes: and extracting action semantics of the gesture to be acquired from the motion characteristics, and determining gesture information of the gesture to be acquired based on the action semantics.
Wherein, the action semantics refers to meaning or information represented by the action.
Optionally, translating the action semantics of the gesture to be acquired according to the motion characteristics, performing data mining on the motion characteristics through feature engineering to obtain mining information, translating the action semantics of the gesture to be acquired according to the mining information, and recognizing the action semantics by converting the action semantics into semantic texts, wherein the semantic texts are matched and recognized with a pre-constructed gesture text library.
It can be seen that, according to the scheme, after a microwave antenna array device is utilized to transmit a microwave signal to a gesture area to be acquired, an echo signal reflected from the gesture area to be acquired back into the microwave antenna array device is received, so that the microwave signal of the gesture area to be acquired can be obtained, further gesture analysis is performed according to the microwave signal, and the echo delay of the echo signal is calculated, so that the distance between a target area and the transmitting area of the device can be calculated, and a reliable basis can be provided for the accurate position of a subsequent positioning target point; further, according to the embodiment of the invention, the signal distribution condition of the echo signals of the gesture area to be acquired in the microwave antenna array device can be known by calculating the echo angle of the echo signals according to the echo points, the influence of other external factors on an analysis result is further avoided, the motion amplitude of the gesture to be acquired when the gesture to be acquired is transmitted can be known by calculating the excitation phase of the echo signals according to the echo angle, the array space of the microwave signals is constructed, the echo signals are mapped into the array space, the distribution condition of each array element antenna of the echo signals of the gesture to be acquired in the microwave antenna array device can be known by obtaining space signals, the motion amplitude of the gesture to be acquired can be recognized according to the phase difference, the change amplitude of each gesture change of the gesture to be acquired can be further analyzed, the gesture signal of the gesture to be acquired can be further analyzed according to the change amplitude, and the three-dimensional effect map of the gesture to be acquired can be more beneficial to the information to be displayed and the gesture to be acquired. Therefore, the wireless gesture acquisition method based on the microwave antenna array provided by the embodiment of the invention can improve the accuracy of wireless gesture analysis.
FIG. 2 is a functional block diagram of a wireless gesture acquisition system based on a microwave antenna array according to the present invention.
The wireless gesture acquisition system 200 based on the microwave antenna array can be installed in electronic equipment. Depending on the functions implemented, the wireless gesture acquisition system based on the microwave antenna array may include an echo positioning module 201, a motion trajectory analysis module 202, a motion amplitude recognition module 203, and a gesture information analysis module 204.
The module of the invention, which may also be referred to as a unit, refers to a series of computer program segments, which are stored in the memory of the electronic device, capable of being executed by the processor of the electronic device and of performing a fixed function.
In the embodiment of the present invention, the functions of each module/unit are as follows:
the echo positioning module 201 is configured to receive an echo signal reflected from the gesture area to be acquired back into the microwave antenna array device after transmitting a microwave signal to the gesture area to be acquired by using the microwave antenna array device, calculate an echo delay of the echo signal, and position an echo point of the gesture area to be acquired according to the echo delay;
The motion trajectory analysis module 202 is configured to calculate an echo angle of the echo signal according to the echo point, calculate an excitation phase of the echo signal according to the echo angle, and identify a motion trajectory of a gesture to be acquired in the gesture area to be acquired according to the excitation phase;
the motion amplitude recognition module 203 is configured to construct an array space of the microwave signals, map the echo signals into the array space to obtain space signals, calculate a phase difference of the echo signals based on the space signals, and recognize the motion amplitude of the gesture to be acquired according to the phase difference;
the gesture information analysis module 204 is configured to construct a three-dimensional effect diagram of the gesture to be collected according to the motion track and the motion amplitude, identify motion features of the gesture to be collected according to the three-dimensional effect diagram, and analyze gesture information of the gesture to be collected according to the motion features.
In detail, the modules in the wireless gesture collection system 200 based on a microwave antenna array in the embodiment of the present invention use the same technical means as the wireless gesture collection method based on a microwave antenna array described in fig. 1, and can produce the same technical effects, which are not described herein.
Fig. 3 is a schematic structural diagram of an electronic device 1 for implementing a wireless gesture collection method based on a microwave antenna array according to an embodiment of the present invention.
The electronic device 1 may comprise a processor 10, a memory 11, a communication bus 12 and a communication interface 13, and may further comprise a computer program stored in the memory 11 and executable on the processor 10, such as a wireless gesture acquisition method program based on a microwave antenna array.
The processor 10 may be formed by an integrated circuit in some embodiments, for example, a single packaged integrated circuit, or may be formed by a plurality of integrated circuits packaged with the same function or different functions, including one or more central processing units (Central Processing Unit, CPU), a microprocessor, a digital processing chip, a graphics processor, a combination of various control chips, and so on. The processor 10 is a Control Unit (Control Unit) of the electronic device 1, connects respective parts of the entire electronic device using various interfaces and lines, executes or executes programs or modules stored in the memory 11 (for example, executes a wireless gesture acquisition method program based on a microwave antenna array, etc.), and invokes data stored in the memory 11 to perform various functions of the electronic device and process data.
The memory 11 includes at least one type of readable storage medium including flash memory, a removable hard disk, a multimedia card, a card type memory (e.g., SD or DX memory, etc.), a magnetic memory, a magnetic disk, an optical disk, etc. The memory 11 may in some embodiments be an internal storage unit of the electronic device, such as a mobile hard disk of the electronic device. The memory 11 may in other embodiments also be an external storage device of the electronic device, such as a plug-in mobile hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) or the like, which are provided on the electronic device. Further, the memory 11 may also include both an internal storage unit and an external storage device of the electronic device. The memory 11 may be used to store not only application software installed in an electronic device and various data, such as a code of a wireless gesture acquisition method program based on a microwave antenna array, but also temporarily store data that has been output or is to be output.
The communication bus 12 may be a peripheral component interconnect standard (Peripheral Component Interconnect, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, among others. The bus may be classified as an address bus, a data bus, a control bus, etc. The bus is arranged to enable a connection communication between the memory 11 and at least one processor 10 etc.
The communication interface 13 is used for communication between the electronic device 1 and other devices, including a network interface and a user interface. Optionally, the network interface may include a wired interface and/or a wireless interface (e.g., WI-FI interface, bluetooth interface, etc.), typically used to establish a communication connection between the electronic device and other electronic devices. The user interface may be a Display (Display), an input unit such as a Keyboard (Keyboard), or alternatively a standard wired interface, a wireless interface. Alternatively, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch, or the like. The display may also be referred to as a display screen or display unit, as appropriate, for displaying information processed in the electronic device and for displaying a visual user interface.
Fig. 3 shows only an electronic device with components, it being understood by a person skilled in the art that the structure shown in fig. 3 does not constitute a limitation of the electronic device 1, and may comprise fewer or more components than shown, or may combine certain components, or may be arranged in different components.
For example, although not shown, the electronic device 1 may further include a power source (such as a battery) for supplying power to each component, and preferably, the power source may be logically connected to the at least one processor 10 through a power management device, so that functions of charge management, discharge management, power consumption management, and the like are implemented through the power management device. The power supply may also include one or more of any of a direct current or alternating current power supply, recharging device, power failure detection circuit, power converter or inverter, power status indicator, etc. The electronic device 1 may further include various sensors, bluetooth modules, wi-Fi modules, etc., which will not be described herein.
It should be understood that the embodiments described are for illustrative purposes only and are not limited to this configuration in the scope of the patent application.
The quantitative determination method program of the development and construction period of the conjugate shear crack stored in the memory 11 in the electronic device 1 is a combination of a plurality of instructions, and when running in the processor 10, it can be implemented:
after transmitting a microwave signal to a gesture area to be acquired by utilizing a microwave antenna array device, receiving an echo signal reflected back into the microwave antenna array device from the gesture area to be acquired, calculating echo delay of the echo signal, and positioning an echo point of the gesture area to be acquired according to the echo delay;
According to the echo point, calculating an echo angle of the echo signal, calculating an excitation phase of the echo signal according to the echo angle, and identifying a motion track of a gesture to be acquired in the gesture area to be acquired according to the excitation phase;
constructing an array space of the microwave signals, mapping the echo signals into the array space to obtain space signals, calculating phase differences of the echo signals based on the space signals, and identifying the motion amplitude of the gesture to be acquired according to the phase differences;
and constructing a three-dimensional effect diagram of the gesture to be acquired according to the motion track and the motion amplitude, identifying the motion characteristics of the gesture to be acquired by utilizing the three-dimensional effect diagram, and analyzing gesture information of the gesture to be acquired according to the motion characteristics.
In particular, the specific implementation method of the above instructions by the processor 10 may refer to the description of the relevant steps in the corresponding embodiment of the drawings, which is not repeated herein.
Further, the modules/units integrated in the electronic device 1 may be stored in a computer readable storage medium if implemented in the form of software functional units and sold or used as separate products. The computer readable storage medium may be volatile or nonvolatile. For example, the computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM).
The present invention also provides a computer readable storage medium storing a computer program which, when executed by a processor of an electronic device, can implement:
after transmitting a microwave signal to a gesture area to be acquired by utilizing a microwave antenna array device, receiving an echo signal reflected back into the microwave antenna array device from the gesture area to be acquired, calculating echo delay of the echo signal, and positioning an echo point of the gesture area to be acquired according to the echo delay;
according to the echo point, calculating an echo angle of the echo signal, calculating an excitation phase of the echo signal according to the echo angle, and identifying a motion track of a gesture to be acquired in the gesture area to be acquired according to the excitation phase;
constructing an array space of the microwave signals, mapping the echo signals into the array space to obtain space signals, calculating phase differences of the echo signals based on the space signals, and identifying the motion amplitude of the gesture to be acquired according to the phase differences;
and constructing a three-dimensional effect diagram of the gesture to be acquired according to the motion track and the motion amplitude, identifying the motion characteristics of the gesture to be acquired by utilizing the three-dimensional effect diagram, and analyzing gesture information of the gesture to be acquired according to the motion characteristics.
In the several embodiments provided in the present invention, it should be understood that the disclosed apparatus, device and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be other manners of division when actually implemented.
The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical units, may be located in one place, or may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional module in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units can be realized in a form of hardware or a form of hardware and a form of software functional modules.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.
The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims shall not be construed as limiting the claim concerned.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A wireless gesture acquisition method based on a microwave antenna array, the method comprising:
after transmitting a microwave signal to a gesture area to be acquired by utilizing a microwave antenna array device, receiving an echo signal reflected back into the microwave antenna array device from the gesture area to be acquired, calculating echo delay of the echo signal, and positioning an echo point of the gesture area to be acquired according to the echo delay;
according to the echo point, calculating an echo angle of the echo signal, calculating an excitation phase of the echo signal according to the echo angle, and identifying a motion track of a gesture to be acquired in the gesture area to be acquired according to the excitation phase;
Constructing an array space of the microwave signals, mapping the echo signals into the array space to obtain space signals, calculating phase differences of the echo signals based on the space signals, and identifying the motion amplitude of the gesture to be acquired according to the phase differences;
and constructing a three-dimensional effect diagram of the gesture to be acquired according to the motion track and the motion amplitude, identifying the motion characteristics of the gesture to be acquired by utilizing the three-dimensional effect diagram, and analyzing gesture information of the gesture to be acquired according to the motion characteristics.
2. The method for wireless gesture collection based on a microwave antenna array according to claim 1, wherein the calculating the echo angle of the echo signal according to the echo point comprises:
constructing a rectangular coordinate system of the echo point;
taking the microwave antenna array device as a coordinate origin of the echo point, and constructing a rectangular coordinate system of the echo point by taking the coordinate origin as a center;
connecting the echo point with the origin of coordinates in the rectangular coordinate system to obtain an echo straight line;
and calculating an included angle between the echo straight line and a horizontal axis in the rectangular coordinate system to obtain an echo angle.
3. The method for wireless gesture collection based on a microwave antenna array according to claim 1, wherein the calculating the excitation phase of the echo signal comprises:
constructing a rectangular waveguide of the echo signals, distributing the echo signals in the rectangular waveguide, and calculating excitation phases of the echo signals distributed in the rectangular waveguide by using the following formula:
；
wherein,represents the excitation phase +.>Vacuum dielectric constant indicative of said echo signal, < >>Vacuum permeability indicative of said echo signal, +.>、/>、/>Respectively representing the respective side lengths of the rectangles in the rectangular waveguide, a represents the derivative +_ of the echo signal in the rectangular waveguide>The signal strength of the side, b, represents the derivative +_of the echo signal in the rectangular wave>Signal intensity of edge,/">Representing the echo signal at the rectangular wave derivative +.>Signal strength of the edge.
4. The method for acquiring the wireless gesture based on the microwave antenna array according to claim 1, wherein the step of identifying the motion track of the gesture to be acquired in the gesture area to be acquired according to the excitation phase comprises the steps of:
identifying a phase point in the excitation phase, and inquiring an excitation node corresponding to the phase point;
Constructing a motion curve graph of the gesture to be acquired according to the phase point and the excitation node;
and determining the motion trail of the gesture to be acquired according to the motion curve graph.
5. The method for wireless gesture collection based on a microwave antenna array according to claim 1, wherein the calculating the phase difference of the echo signals based on the spatial signals comprises:
converting the spatial signal into a digital signal, and calculating the phase maximum value of the echo signal according to the digital signal by using the following formula:
；
wherein,represents the phase maximum, +.>Representing the number of array element antennas in the X-axis in the three-dimensional coordinate space corresponding to the digital signal,/->Representing the number of array element antennas in the Y-axis in the three-dimensional coordinate space corresponding to the digital signal,/->Digital signal value representing the echo signal at the ith array element antenna,/for the antenna>Digital signal value representing the echo signal at the j-th array element antenna,/for the antenna>Representing the spacing of the array element antennas in the X-axis in said three-dimensional coordinate space,/for each of the array element antennas>Representing the spacing of the array element antennas in the Y-axis in said three-dimensional coordinate space,/for each of the array element antennas>Echo angle representing the echo signalDegree (f)>Representing a signal emission angle corresponding to the echo signal;
The phase minimum of the echo signal is calculated using the following formula:
；
wherein,representing the minimum value of phase +.>Representing the number of array element antennas in the X-axis in the three-dimensional coordinate space corresponding to the digital signal,/->Representing the number of array element antennas in the Y-axis in the three-dimensional coordinate space corresponding to the digital signal,/->Digital signal value representing the echo signal at the ith array element antenna,/for the antenna>Digital signal value representing the echo signal at the j-th array element antenna,/for the antenna>Representing the spacing of the array element antennas in the X-axis in said three-dimensional coordinate space,/for each of the array element antennas>Representing the spacing of the array element antennas in the Y-axis in said three-dimensional coordinate space,/for each of the array element antennas>Represents the echo angle, +.>Representing a signal emission angle corresponding to the echo signal;
the phase difference of the echo signals is calculated using the following formula:
；
wherein,indicating phase difference>Represents the phase maximum, +.>Representing the phase minima, the digital signal refers to a discrete signal that describes the state of the signal in space.
6. The method for wireless gesture collection based on a microwave antenna array according to claim 1, wherein the step of identifying the motion amplitude of the gesture to be collected according to the phase difference comprises:
Generating a difference parameter of the phase difference;
inputting the difference parameter into a pre-constructed motion function;
and calculating the motion amplitude of the gesture to be acquired by utilizing the motion function and combining the difference parameter.
7. The method for wireless gesture collection based on a microwave antenna array according to claim 1, wherein the constructing the three-dimensional effect graph of the gesture to be collected according to the motion trail and the motion amplitude comprises:
constructing a three-dimensional model of the gesture to be acquired;
converting the motion trail into a trail, and distributing the trail in the three-dimensional model to obtain a trail distributed in the three-dimensional model;
taking the motion amplitude as the peaks and troughs distributed to the track lines in the three-dimensional model, and according to the distribution, distributing the motion amplitude to track nodes of the track lines in the three-dimensional model;
and carrying out line painting on the track lines distributed in the three-dimensional model to obtain the three-dimensional effect graph of the gesture to be acquired.
8. The method for wireless gesture collection based on a microwave antenna array according to claim 1, wherein the identifying the motion feature of the gesture to be collected by using the three-dimensional effect map comprises:
Simulating gesture actions of the gesture to be acquired by utilizing the three-dimensional effect graph;
making the gesture action into a dynamic graph;
and extracting dynamic characteristics of the dynamic graph, and determining motion characteristics of the gesture to be acquired based on the dynamic characteristics.
9. The method for wireless gesture collection based on a microwave antenna array according to claim 8, wherein the analyzing gesture information of the gesture to be collected according to the motion feature comprises:
extracting action semantics of the gesture to be acquired from the motion characteristics;
and determining gesture information of the gesture to be acquired based on the action semantics.
10. A wireless gesture acquisition system based on a microwave antenna array, the system comprising:
the echo positioning module is used for receiving echo signals reflected back into the microwave antenna array device from the gesture area to be acquired after transmitting microwave signals to the gesture area to be acquired by utilizing the microwave antenna array device, calculating echo delay of the echo signals, and positioning echo points of the gesture area to be acquired according to the echo delay;
the motion trail analysis module is used for calculating the echo angle of the echo signal according to the echo point, calculating the excitation phase of the echo signal according to the echo angle, and identifying the motion trail of the gesture to be acquired in the gesture area to be acquired according to the excitation phase;
The motion amplitude recognition module is used for constructing an array space of the microwave signals, mapping the echo signals into the array space to obtain space signals, calculating phase differences of the echo signals based on the space signals, and recognizing the motion amplitude of the gesture to be acquired according to the phase differences;
the gesture information analysis module is used for constructing a three-dimensional effect diagram of the gesture to be acquired according to the motion track and the motion amplitude, identifying the motion characteristics of the gesture to be acquired by utilizing the three-dimensional effect diagram, and analyzing gesture information of the gesture to be acquired according to the motion characteristics.
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