CN112485782A - Sitting posture monitoring method and device, electronic equipment and readable storage medium - Google Patents
Sitting posture monitoring method and device, electronic equipment and readable storage medium Download PDFInfo
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Abstract
The application discloses a sitting posture monitoring method. The method comprises the following steps: acquiring user attitude information detected by a plurality of millimeter wave radars; determining a deviation parameter between the user posture information and preset posture information; and judging whether the user sitting posture is abnormal according to the deviation parameter, and sending out prompt information when the user sitting posture is abnormal. The sitting posture monitoring method and device, the electronic equipment and the readable storage medium utilize the millimeter wave radar flight time to detect the human body sitting posture information, can detect the distance and the movement accurately to the millimeter level under the condition of low transmitting power, can judge the human body sitting posture condition in real time, and help a user to carry out sitting posture reminding and correction suggestion. Meanwhile, the millimeter wave radar detection can avoid the privacy avoidance problem of camera type image acquisition and avoid the problem that the sitting posture correction mode is not easy to accept and is relatively resistant by placing a seat frame and the like.
Description
Technical Field
The present disclosure relates to the field of electronic technologies, and in particular, to a sitting posture monitoring method and apparatus, an electronic device, and a readable storage medium.
Background
Poor sitting postures of children and teenagers can cause the problems of vision, spinal deformation and the like, the whole life is influenced by the good sitting postures cultivated from childhood, the incidence probability of the scoliosis of children in China is up to 20%, and the main reason of the phenomenon is the poor sitting postures of children besides genetic factors.
At present, similar products are mainly designed for fixed supports, the use mode belongs to forced intervention, and the feeling is poor. In addition, the characteristics of the detection distance of the camera are not sensitive enough, the monitoring precision is not high, and the image acquisition relates to the privacy problem.
Disclosure of Invention
The embodiment of the application provides a sitting posture monitoring method and device, electronic equipment and a readable storage medium.
The embodiment of the application provides a sitting posture monitoring method. The method comprises the following steps: acquiring user attitude information detected by a plurality of millimeter wave radars; determining a deviation parameter between the user posture information and preset posture information; and judging whether the user sitting posture is abnormal according to the deviation parameter, and sending prompt information when the user sitting posture is abnormal.
In some embodiments, the plurality of millimeter wave radars include a first millimeter wave radar, a second millimeter wave radar, and a third millimeter wave radar disposed at different locations, and the obtaining the user posture information detected by the plurality of millimeter wave radars includes: controlling the first millimeter wave radar, the second millimeter wave radar and the third millimeter wave radar to respectively emit millimeter wave signals and detect reflected signals within a preset distance range; judging whether a user exists in the preset distance range or not according to the reflection signal; and when the user exists in the preset distance range, acquiring the user posture information detected by the plurality of millimeter wave radars.
In some embodiments, when there is a user in the preset distance range, acquiring user posture information detected by a plurality of millimeter wave radars includes; determining to receive a preset reflection signal within a preset distance range according to the dielectric constant of the human body; and when the reflection signal is the preset reflection signal, judging that a user exists in the preset distance range.
In some embodiments, the obtaining user posture information detected by a plurality of millimeter wave radars when the user exists in the preset distance range includes: controlling the first millimeter wave radar, the second millimeter wave radar and the third millimeter wave radar to respectively emit millimeter wave signals and detect multiple groups of user profile information distributed according to distances at intervals step by step; processing a plurality of groups of the user profile information to obtain a user plane image; and determining the user pose information from the user plane image.
In certain embodiments, the method comprises: and detecting standard parameters corresponding to the standard sitting postures of the user by using the plurality of millimeter wave radars to obtain the preset posture information.
In some embodiments, the standard parameters include a standard preset angle and a preset distance.
In some embodiments, the determining whether the user sitting posture is abnormal according to the offset parameter, and sending a prompt message when the user sitting posture is abnormal includes: when the offset parameter exceeds a preset range, judging that the user sitting posture state is abnormal; or when the duration of the deviation parameter in a preset range exceeds a preset time, judging that the user sitting posture state is abnormal.
The embodiment of the application also provides a sitting posture monitoring device. The sitting posture monitoring device comprises: the device comprises an acquisition module, a determination module and a judgment module. The acquisition module is used for acquiring user posture information detected by a plurality of millimeter wave radars; the determining module is used for determining a deviation parameter between the user posture information and preset posture information; the judging module is used for judging whether the user sitting posture state is abnormal according to the deviation parameter and sending out prompt information when the user sitting posture state is abnormal.
The embodiment of the application also provides the electronic equipment. The electronic device comprises a processor and a memory, wherein the memory stores a computer program, and the computer program realizes the sitting posture monitoring method of any one of the above embodiments when executed by the processor.
The embodiment of the application also provides a nonvolatile computer readable storage medium of the computer program. The computer program, when executed by one or more processors, implements the sitting posture monitoring method of any of the above embodiments.
The sitting posture monitoring method and device, the electronic equipment and the readable storage medium utilize the millimeter wave radar flight time to detect the human body sitting posture information, can detect the distance and the movement accurately to the millimeter level under the condition of low transmitting power, can judge the human body sitting posture condition in real time, and help a user to carry out sitting posture reminding and correction suggestion. Meanwhile, the millimeter wave radar detector can avoid the privacy avoidance problem of camera type image acquisition and avoid the problem that the sitting posture correction mode is not easy to accept and is relatively resistant when a seat frame is placed.
Additional aspects and advantages of embodiments of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
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The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic flow diagram of a sitting posture monitoring method according to some embodiments of the present disclosure;
FIG. 2 is a schematic structural view of a sitting posture monitoring device according to some embodiments of the present disclosure;
FIG. 3 is a schematic diagram of a sitting posture monitoring method according to some embodiments of the present disclosure;
FIG. 4 is a schematic diagram of a sitting posture monitoring method according to some embodiments of the present disclosure;
FIG. 5 is a schematic illustration of millimeter wave radar signals versus offset angle for certain embodiments of the present application;
FIG. 6 is a schematic structural diagram of an electronic device according to some embodiments of the present application;
FIG. 7 is a schematic structural diagram of a computer-readable storage medium according to some embodiments of the present application;
FIG. 8 is a schematic flow chart diagram of a sitting posture monitoring method according to some embodiments of the present disclosure;
FIG. 9 is a schematic diagram of an acquisition module in the sitting posture monitoring device according to some embodiments of the present disclosure;
FIG. 10 is a schematic illustration of millimeter wave radar signals versus range for certain embodiments of the present application;
FIG. 11 is a schematic flow chart diagram of a sitting posture monitoring method according to some embodiments of the present disclosure;
FIG. 12 is a schematic diagram of an acquisition unit in the sitting posture monitoring device according to some embodiments of the present disclosure;
FIG. 13 is a schematic view of a profile image of a sitting posture monitoring method according to some embodiments of the present disclosure.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the embodiments of the present application, and are not to be construed as limiting the embodiments of the present application.
Referring to fig. 1, the present application provides a sitting posture monitoring method. The method comprises the following steps:
s12: acquiring user attitude information detected by a plurality of millimeter wave radars;
s14: determining a deviation parameter between the user posture information and preset posture information; and
s16: and judging whether the user sitting posture is abnormal or not according to the deviation parameter, and sending prompt information when the user sitting posture is abnormal.
Please refer to fig. 2, a sitting posture monitoring device 10 is also provided. The sitting posture monitoring device 10 includes: an acquisition module 12, a determination module 14 and a judgment module 16.
The step S12 may be implemented by the obtaining module 12, the step S14 may be implemented by the determining module 14, and the step S16 may be implemented by the determining module 16. That is, the obtaining module 12 is configured to obtain user gesture information detected by a plurality of millimeter wave radars. The determining module 14 is configured to determine a shift parameter between the user posture information and the preset posture information. The judging module 16 is used for judging whether the user sitting posture state is abnormal according to the deviation parameter and sending out prompt information when the user sitting posture state is abnormal.
Specifically, the plurality of millimeter wave radars may be 2 or more than 2 millimeter wave radars. The present application takes 3 millimeter wave radars to detect the user attitude information as an example for explanation.
The user posture information includes: a plurality of distances from the user to the plurality of millimeter wave radars, and profile information of the user. The preset posture information is posture information of different users detected by the multiple millimeter wave radars in advance, and the preset posture information comprises standard distance threshold values and standard outline information detected by the multiple millimeter wave radars when the different users correctly sit. Different users may refer to users of different heights, short, fat, thin, or different ages. For example, as shown in fig. 3, the preset posture information of zhang san of the user detected by the three radars R1, R2 and R3 is a distance M in the figure, and the contour information of zhang san is also shown in the right figure in fig. 3, and includes information of the entire outer contour of the human body, which is a three-dimensional human body contour, obtained by scanning the outer surface of the human body by the three radars.
Schematic diagrams of a plurality of millimeter wave radars for detecting user attitude information are shown in fig. 3 and 4, the millimeter wave radars transmit millimeter waves with a certain waveband, receive the millimeter waves reflected by a user, and perform accurate ranging by calculating flight time. Millimeter wave radars are radars that operate in the millimeter wave band (millimeter wave) for detection. Usually, the millimeter wave is in the frequency domain of 30 to 300GHz (with a wavelength of 1 to 10 mm). The millimeter wave radar can perform high-precision multidimensional search measurement and can perform high-precision measurement positioning of distance, direction, frequency and spatial position. The distance from the user to the millimeter-wave radar can be accurately measured using the millimeter-wave radar. The millimeter wave radar can be arranged in different intelligent devices, and can also be independently arranged as a detection device to be placed in front of a user so as to measure the distance from the user to the intelligent devices in real time and detect the outer contour information of the sitting posture of the user in real time. When the millimeter wave radar detects the posture information of the user, facial features or features of other parts of the user do not need to be extracted, and whether the sitting posture of the user is correct can be judged only by detecting the distance and the outline information of the user. That is, millimeter wave radar detection can avoid the privacy of camera class image acquisition to avoid the problem of evading, and avoid with putting the mode that seat frame etc. carried out the position of sitting and correct not easily accepted and make the problem that the people more resist.
The offset parameter may refer to an offset angle and an offset distance by which the user is offset from a preset standard gesture. Specifically, referring to fig. 5, for example, the angle of the user in the preset standard posture may be preset to be 0 °, and the offset distance may refer to the angle between the user and the preset standard posture, for example, the radar wave emitted from the radar R1 to the user is offset by + a degrees in the a direction and-B degrees in the B direction compared to the preset labeling posture. Similarly, the offset distance may be a distance m by which the user is offset toward the millimeter wave radar, that is, attitude information when the user's head is lowered forward, or a distance n by which the user is offset away from the millimeter wave radar, that is, attitude information when the user is bent. Or the distance n by which the user shifts back to the millimeter wave radar, that is, the posture of the user when bending back.
Further, the offset distance may also refer to an offset angle and an offset distance with respect to the front, rear, left, right, and other surrounding areas of the preset standard posture. That is, the offset parameter may also be an angle and a distance of the user offset to each direction in space, that is, when the millimeter radar wave detects that the posture information of the user is offset from the preset standard posture, the offset parameter may be calculated.
When the user sitting posture state is abnormal, the judgment module 16 sends the judgment result to the intelligent device to form prompt information to prompt the user to correct the sitting posture. The prompt message can be a striking text prompt or a voice prompt.
The sitting posture monitoring method of this application utilizes millimeter wave radar flight time to listen human position of sitting information, can be under low transmitting power's condition, and accurate to millimeter level's distance sounding and removal are listened, can judge human position of sitting condition in real time, and the help user carries out the position of sitting and reminds and correct the suggestion. Meanwhile, the millimeter wave radar detection can avoid the privacy avoidance problem of camera type image acquisition and avoid the problem that the sitting posture correction mode is not easy to accept and is relatively resistant by placing a seat frame and the like.
Referring to fig. 6, the present application further provides an electronic device 20. The electronic device 20 comprises a processor 21 and a memory 22, the memory 22 storing a computer program 23 which, when executed by the processor 21, implements: acquiring user attitude information detected by a plurality of millimeter wave radars; determining a deviation parameter between the user posture information and preset posture information; and judging whether the user sitting posture is abnormal according to the deviation parameter, and sending out prompt information when the user sitting posture is abnormal. The electronic device 20 is, for example, a computer, a mobile phone, an ipad, a tablet computer, a game machine, or other smart devices, which are not listed here.
Referring to fig. 7, the present application also provides a non-volatile computer readable storage medium 30 of a computer program, on which a computer program 31 is stored.
The computer program 31, when executed by the one or more processors 32, implements the steps of the model training method of any of the embodiments described above.
For example, the program, when executed by the processor 32, implements the steps of the following meter identification method:
s12: acquiring user attitude information detected by a plurality of millimeter wave radars;
s14: determining a deviation parameter between the user posture information and preset posture information; and
s16: and judging whether the user sitting posture is abnormal or not according to the deviation parameter, and sending prompt information when the user sitting posture is abnormal.
The computer readable storage medium 30 may be disposed in the processor 32 or the data source reader, and at this time, the processor 32 or the data source reader can communicate with the cloud server to obtain the corresponding computer program 31.
It will be appreciated that the computer program 31 comprises computer program code. The computer program code may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable storage medium may include: any entity or device capable of carrying computer program code, recording medium, U-disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), software distribution medium, and the like.
The sitting posture monitoring method and device, the electronic equipment and the readable storage medium utilize the millimeter wave radar flight time to detect the human body sitting posture information, can detect the distance and the movement accurately to the millimeter level under the condition of low transmitting power, can judge the human body sitting posture condition in real time, and help a user to carry out sitting posture reminding and correction suggestion. Meanwhile, the millimeter wave radar detection can avoid the privacy avoidance problem of camera type image acquisition and avoid the problem that the sitting posture correction mode is not easy to accept and is relatively resistant by placing a seat frame and the like.
Referring to fig. 8, in some embodiments, the plurality of millimeter wave radars include a first millimeter wave radar, a second millimeter wave radar, and a third millimeter wave radar disposed at different positions, and step S12 includes:
s121: controlling a first millimeter wave radar, a second millimeter wave radar and a third millimeter wave radar to respectively emit millimeter wave signals and detect reflected signals within a preset distance range;
s122: judging whether a user exists in a preset distance range or not according to the reflection signal;
s123: and when the user exists in the preset distance range, acquiring user posture information detected by the plurality of millimeter wave radars.
Referring to fig. 9, the obtaining module 12 further includes a detecting unit 121, a determining unit 122, and a obtaining unit 123.
Step S11 may be implemented by the detection unit 121, step S122 may be implemented by the determination unit 122, and step S123 may be implemented by the acquisition unit 123. That is, the detection unit 121 is configured to control the first millimeter wave radar, the second millimeter wave radar, and the third millimeter wave radar to respectively emit millimeter wave signals and detect a reflection signal within a preset distance range. The determining unit 122 is configured to determine whether a user exists in the preset distance range according to the reflection signal. The obtaining unit 122 is configured to obtain user posture information detected by a plurality of millimeter wave radars when a user exists in a preset distance range.
Referring to fig. 6 and 7, the processor 21 or the processor 32 is configured to: controlling a first millimeter wave radar, a second millimeter wave radar and a third millimeter wave radar to respectively emit millimeter wave signals and detect reflected signals within a preset distance range; judging whether a user exists in a preset distance range or not according to the reflection signal; and when the user exists in the preset distance range, acquiring user posture information detected by the plurality of millimeter wave radars.
Specifically, the preset distance refers to a distance from the user to the millimeter wave radar. The preset distance may be a distance from a closest point on the user to the millimeter wave radar, such as a distance from the nose, hands, or legs or other parts to the millimeter wave radar, or a distance from the chest, eyes, forehead, shoulders, neck or other parts of the user to the millimeter wave radar, when the user is in a standard sitting posture. The preset distance is a distance of radar wave signal transmission preset in the millimeter wave radar by a user.
It is understood that the relationship between the object dielectric constant and the millimeter wave reflectance is:
wherein, γ: reflectivity,. epsilon.1 material dielectric constant,. epsilon.2 air dielectric constant. That is, the difference in dielectric constant of different objects causes the difference in reflectivity of millimeter waves, and reflected waves collected by the antenna of the millimeter wave radar have energy differences. Therefore, it is possible to distinguish whether the millimeter waves are emitted to the human body, the object, or the wall surface according to the difference in the ability to reflect the waves. When the monitored energy of the reflected wave is the reflected wave energy reflected by the user, judging that the user exists, and starting to acquire the posture information of the user, thereby accurately identifying the sitting posture data of the user. And when the energy of the reflected wave is monitored to be the energy of the reflected wave which is not reflected by the user, such as the energy of the reflected wave reflected by a stool, a plush toy and the like, the millimeter wave radar is controlled not to acquire the posture information of the user at the moment.
In some embodiments, when a user exists in the preset distance range, acquiring user posture information detected by the plurality of millimeter wave radars includes: determining to receive a preset reflection signal within a preset distance range according to the dielectric constant of the human body; and when the reflection signal is the preset reflection signal, judging that a user exists in a preset distance range.
Referring to fig. 9, the obtaining unit 123 is configured to determine that a preset reflection signal within a preset distance range is received according to the human body dielectric constant; and when the reflection signal is the preset reflection signal, judging that a user exists in a preset distance range.
Referring to fig. 5 and fig. 6, the processor 21 or the processor 32 is configured to: determining to receive a preset reflection signal within a preset distance range according to the dielectric constant of the human body; and when the reflection signal is the preset reflection signal, judging that a user exists in a preset distance range.
In particular according to the formula
Wherein, γ: reflectivity,. epsilon.1 material dielectric constant,. epsilon.2 air dielectric constant. The target reflectivity of the preset millimeter reflected wave of the human body within the preset distance range can be calculated according to the dielectric constant of the human body, the reflected signal corresponding to the target reflectivity is the energy signal value of the received reflected wave, and the energy signal value is used as the preset reflected signal. When the reflectivity of the millimeter waves sent by the millimeter wave radar detector at the preset distance is the target reflectivity, namely the energy signal value is the preset reflection signal, the user in the preset distance range is judged to exist.
It can be understood that, since the signal value of the millimeter wave radar is related to the distance of transmission as shown in fig. 10, it can be known from the figure that: the energy signal value of the millimeter wave radar may be set to be the strongest energy signal at the preset distance, and when the user is at the preset distance, for example, the preset distance may be 0.4m, 0.45m, 0.5m, 0.55m, 0.6m, 0.65m, 0.7m, 0.75m, 0.8m, or 0.85m, the reflected wave received by the millimeter wave radar at this time is the largest energy signal value, that is, the presence determining module 13 determines that the user is within the preset distance range. At this time, if the plurality of millimeter wave radars are 3 millimeter wave radars, and the energy signal values detected by the three millimeter wave radars may all be the maximum signal value, it is determined that the user is within the preset distance range. In addition, the sitting posture monitoring method can also be used for judging that the user is in the preset distance range when one or 2 of energy signal values detected by the three millimeter wave radars is the largest.
Referring to fig. 11 and 3, in some embodiments, the step S123 includes:
s1231: controlling a first millimeter wave radar, a second millimeter wave radar and a third millimeter wave radar to respectively emit millimeter wave signals and detect a plurality of groups of user profile information distributed according to distances at intervals step by step;
s1232: processing a plurality of groups of user profile information to obtain a user plane image; and
s1233: user pose information is determined from the user plane image.
Referring to fig. 12, the acquiring unit 123 may include a control unit 1231, a processing unit 1232, and a determining unit 1233.
Step S1231 may be implemented by the control unit 1231, step S1232 may be implemented by the processing unit 1232, and step S1233 may be implemented by the determination unit 1233. That is, the control unit 1231 is configured to control the first millimeter wave radar, the second millimeter wave radar, and the third millimeter wave radar to respectively emit millimeter wave signals and detect multiple sets of user profile information distributed by distance at regular intervals; the processing unit 1232 processes the sets of user profile information to obtain a user plane image; the determining unit 1233 is configured to determine user pose information from the user plane image.
Referring to fig. 6 and 7, the processor 21 or the processor 32 is configured to: controlling a first millimeter wave radar, a second millimeter wave radar and a third millimeter wave radar to respectively emit millimeter wave signals and detect a plurality of groups of user profile information distributed according to distances at intervals step by step; processing a plurality of groups of user profile information to obtain a user plane image; user pose information is determined from the user plane image.
Specifically, please refer to fig. 3 and fig. 4 in combination, the first millimeter wave radar, the second millimeter wave radar, and the third millimeter wave radar are controlled to respectively emit millimeter wave signals and detect multiple sets of user profile information distributed by distance at intervals (the outline information formed by the shadow in fig. 3 is a set of user profile information), where the distance detection may refer to that the three millimeter wave radars emit the millimeter wave radar once every 5mm interval, or emit the millimeter wave radar once every 8mm interval, or emit the millimeter wave radar once every 10mm interval.
In detail, referring to fig. 3 and fig. 4, the three millimeter wave radars are R1, R2, and R3, respectively, and the three-dimensional coordinate system is established with the millimeter wave radar R1 as the origin, so that the coordinates of the three millimeter wave radars are: the positions of three fixed radar points of R1(x1, y1, z1), R2(x2, y2, z2) and R3(x3, y3, z3) are known;
distance measurement in the z direction is stepwise, corresponding to the known fourth radar R4(x4, y4, z 4);
as shown in fig. 4, it is assumed that the point P (x, y, z) is a radar range scan point, and for example, the detection point P is set at a distance z of 0.4m from the R1 in the z direction.
Solving the equation according to the matrix:
(x-x1)2+(y-y1)2+(z-z1)2＝r12；
(x-x2)2+(y-y2)2+(z-z2)2＝r22；
(x-x3)2+(y-y3)2+(z-z3)2＝r32；
(x-x4)2+(y-y4)2+(z-z4)2＝r42；
the equation is transformed into matrix multiplication through processing, and the coordinate of P (x, y, z) can be solved through an inverse matrix;
the whole process is that after the nearest human body point is identified, depth range plane scanning is started (for example, one group of planes is scanned every 5 mm), after range plane scanning is finished, data in the z direction of each point is ignored, a boundary data set in the x and y directions is obtained, contour data is formed and used for distinguishing postures, a contour image formed by the contour data is equivalent to a plane shadow (as shown in figure 13), and the contour data is formed by data points of the edge contour of the human body.
The profile data can be drawn to obtain a user plane profile image, and the determining unit 123 can specifically determine the posture information of the user according to the user plane image, so that the posture information of the user can be determined more accurately in real time, the privacy avoidance problem of camera image acquisition can be avoided, and the problem that the sitting posture correction mode of a seat frame and the like is not easy to accept and is relatively resistant is avoided.
In some embodiments, a plurality of millimeter wave radars may be used to detect standard parameters corresponding to a standard sitting posture of a user to obtain preset posture information. Specifically, the standard parameters may include a standard preset angle and a preset distance. That is, the standard parameters corresponding to the standard sitting posture of the user can be detected according to 2 or more millimeter wave radars, for example, please refer to fig. 4, the preset posture information when the user a is in the standard sitting posture is detected by using 3 millimeter wave radars, the standard preset angle may be an angle corresponding to an angle θ between the radar R1 and the closest point of the user's body (e.g., the tip of the nose) and the Z axis in the Z direction, for example, 40 degrees (i.e., Z is a constant value), and the closest point of the user's body is directly opposite to the radar R1 (i.e., x is 0, y is 0), and 40 degrees is defined as 0 degrees of the standard preset angle. It can be understood that the preset angles corresponding to users with different heights are different, and the included angle theta is larger for users with higher heights, and the included angle theta is smaller for users with lower heights.
In addition, the distance between the user and the R1 in the z direction is defined as a preset distance, for example, z can be a numerical value such as 0.2m, 0.4m or 0.6m, and the numerical value of the distance between the user and the R1 in the z direction is determined according to standard sitting postures of different users.
In some embodiments, determining whether the user sitting posture is abnormal according to the offset parameter, and sending the prompt message when the user sitting posture is abnormal includes: when the offset parameter exceeds a preset range, judging that the sitting posture state of the user is abnormal; or when the duration of the deviation parameter in the preset range exceeds the preset time, judging that the user sitting posture state is abnormal.
Referring to fig. 2, the determination module 16 of the sitting posture monitoring device 10 is configured to: when the offset parameter exceeds a preset range, judging that the sitting posture state of the user is abnormal; or when the duration of the deviation parameter in the preset range exceeds the preset time, judging that the user sitting posture state is abnormal.
Referring to fig. 6 and 7, the processor 21 or the processor 32 is configured to: when the offset parameter exceeds a preset range, judging that the sitting posture state of the user is abnormal; or when the duration of the deviation parameter in the preset range exceeds the preset time, judging that the user sitting posture state is abnormal.
Specifically, since the offset parameter includes an offset angle and an offset distance, that is, the offset parameter exceeding the preset range may be that either one of the offset angle or the offset distance exceeds the preset offset range. For example, the preset offset angle range is 10 °, and when the offset angle of the human body contour plane image monitored by the sitting posture monitoring device 10 is 20 °, 30 °, 40 ° or another angle greater than 10 ° compared to the preset standard posture, the determining module 16 determines that the sitting posture state of the user is in an abnormal state. The preset offset distance is 0.1m, and when the sitting posture monitoring device 10 monitors that the offset distance of the human body contour plane figure compared with the preset standard posture is 0.15m, 0.2m, 0.3m or other offset distances larger than 0.1m, the determining module 16 determines that the sitting posture state of the user is in an abnormal state.
In addition, when the offset angle and the offset distance are both within a corresponding preset range within a certain monitoring time range, the duration that the offset parameter is within the preset range may be calculated, and if the duration exceeds a preset duration, for example, the duration is 10min, the preset duration is 8min, that is, 10min exceeds 8min, the determining module 16 may also determine that the sitting posture of the user is in an abnormal state (fatigue state), and may send information that the relevant duration exceeds the preset duration to prompt the user to need to rest or adjust the sitting posture, thereby alleviating the fatigue of the user in real time.
Claims (10)
1. A sitting posture monitoring method, comprising:
acquiring user attitude information detected by a plurality of millimeter wave radars;
determining a deviation parameter between the user posture information and preset posture information; and
and judging whether the user sitting posture is abnormal or not according to the deviation parameter, and sending prompt information when the user sitting posture is abnormal.
2. The method of claim 1, wherein the plurality of millimeter wave radars includes a first millimeter wave radar, a second millimeter wave radar, and a third millimeter wave radar disposed at different locations, and wherein obtaining user gesture information detected by the plurality of millimeter wave radars includes:
controlling the first millimeter wave radar, the second millimeter wave radar and the third millimeter wave radar to respectively emit millimeter wave signals and detect reflected signals within a preset distance range;
judging whether a user exists in the preset distance range or not according to the reflection signal;
and when the user exists in the preset distance range, acquiring the user posture information detected by the plurality of millimeter wave radars.
3. The method according to claim 2, wherein when the preset distance range has a user, the obtaining of the user posture information detected by the plurality of millimeter wave radars comprises;
determining to receive a preset reflection signal within a preset distance range according to the dielectric constant of the human body;
and when the reflection signal is the preset reflection signal, judging that a user exists in the preset distance range.
4. The method of claim 2, wherein the obtaining user gesture information detected by a plurality of millimeter wave radars when a user is present in the preset distance range comprises:
controlling the first millimeter wave radar, the second millimeter wave radar and the third millimeter wave radar to respectively emit millimeter wave signals and detect multiple groups of user profile information distributed according to distances at intervals step by step;
processing a plurality of groups of the user profile information to obtain a user plane image; and
and determining the user posture information according to the user plane image.
5. The method according to claim 1, characterized in that it comprises:
and detecting standard parameters corresponding to the standard sitting postures of the user by using the plurality of millimeter wave radars to obtain the preset posture information.
6. The method of claim 5, wherein the standard parameters comprise a standard preset angle and a preset distance.
7. The method of claim 1, wherein the determining whether the user sitting posture is abnormal according to the offset parameter and sending a prompt message when the user sitting posture is abnormal comprises:
when the offset parameter exceeds a preset range, judging that the user sitting posture state is abnormal; or
And when the duration of the deviation parameter in a preset range exceeds a preset time, judging that the user sitting posture state is abnormal.
8. A sitting posture monitoring device, comprising:
the acquisition module is used for acquiring user posture information detected by a plurality of millimeter wave radars;
a determination module for determining a deviation parameter between the user posture information and preset posture information; and
and the judging module is used for judging whether the user sitting posture state is abnormal according to the deviation parameter and sending prompt information when the user sitting posture state is abnormal.
9. An electronic device comprising a processor and a memory, the memory storing a computer program that, when executed by the processor, implements the sitting posture monitoring method of any one of claims 1-7.
10. A non-transitory computer-readable storage medium of a computer program, wherein the computer program, when executed by one or more processors, implements the sitting posture monitoring method of any one of claims 1-7.
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