Air conditioner control method and device based on fall detection function, and air conditioner

Abstract

The application provides an air conditioner control method and device based on a fall detection function and an air conditioner, the method comprising: determining a torso transverse width and a torso longitudinal height based on profile information collected by a radar module for each individual in a room; and controlling the air conditioner to issue a first alarm signal in a case where the torso transverse width of a target individual is greater than or equal to a first threshold value, and the number of profile points with Z-axis coordinate values in a first target height interval is greater than or equal to a second threshold value. The air conditioner control method and device based on the fall detection function and the air conditioner provided by the application can determine a lying posture from the transverse width and the longitudinal height of an individual, and further determine that the current lying posture is caused by a fall behavior in combination with the height space distribution of the torso of the individual in the room, so that the fall detection has higher precision and accuracy without worrying about the leakage of privacy by image processing technology, and the user experience is optimized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to an air conditioner control method and device based on a fall detection function and an air conditioner. BACKGROUND

[0002] With more and more air conditioners entering people's daily life and work, people's demand for air conditioners is no longer just to adjust the indoor environment, but also to have security and protection functions, especially for falls that often occur in people's daily life. Different personal physical conditions may cause different degrees of injury, and timely treatment may cause life-threatening.

[0003] The existing contact type fall detection technology is usually based on wearable devices, and the fall state is determined by the motion characteristics of the acceleration sensor. However, the detection accuracy of this kind of fall detection method will be affected by the wearing condition of the wearable device, for example, if the wearing position is incorrect, the detection result will have a large error. The existing non-contact fall detection technology is usually based on image video detection method. However, this method will infringe on people's privacy. Therefore, how to make the household appliance with high recognition accuracy and no privacy leakage risk is an important topic that needs to be solved in the industry. SUMMARY

[0004] The present application provides an air conditioner control method and device based on a fall detection function and an air conditioner to solve the problem that the prior art cannot simultaneously consider high recognition accuracy and no privacy leakage risk.

[0005] The present application provides an air conditioner control method based on a fall detection function, comprising:

[0006] Based on the contour information collected by the radar module for each individual in the room, the transverse width of the torso and the longitudinal height of the torso are determined;

[0007] In the case where the transverse width of the torso of the target individual is greater than or equal to the first threshold value, and the number of contour points with Z-axis coordinate values in the first target height interval is greater than or equal to the second threshold value, the air conditioner is controlled to issue a first alarm signal;

[0008] The first alarm signal is used to sound and light alarm to all individuals in the room in the case of a fall of the target individual; the target individual is any one of the individuals in the room; the first threshold value is determined according to the proportional relationship between the transverse width of the torso and the longitudinal height of the torso when the human individual is in an upright state; the transverse contour point set is determined according to the contour information of the individual's torso in the horizontal direction; and the first target height interval is the height interval occupied by the human body lying or leaning in the multiple sub-intervals obtained by interval division of the indoor height.

[0009] The air conditioner control method based on the fall detection function provided by the application, in the case that the transverse width of the trunk of the target individual is greater than or equal to the first threshold value, and the number of profile points in the first target height interval of the Z-axis coordinate value is greater than or equal to the second threshold value, after the air conditioner sends the first alarm signal, further comprising:

[0010] Continuously monitoring through the radar module within a preset period to determine the latest longitudinal height of the trunk of the target individual;

[0011] In the case that the latest longitudinal height of the trunk of the target individual is greater than or equal to the third threshold value, controlling the air conditioner to cancel the first alarm signal;

[0012] The third threshold value is determined according to the longitudinal height of the trunk of a human individual in an upright state.

[0013] The air conditioner control method based on the fall detection function provided by the application, in the case that the transverse width of the trunk of the target individual is greater than or equal to the first threshold value, and the number of profile points in the first target height interval of the Z-axis coordinate value is greater than or equal to the second threshold value, after the air conditioner sends the first alarm signal, further comprising:

[0014] Receiving the sign information collected by the radar module on the target individual;

[0015] In the case that the sign information of the target individual does not conform to the healthy sign, and the latest longitudinal height of the trunk of the target individual is less than the third threshold value, controlling the air conditioner to send a help signal to a remote associated control terminal.

[0016] The air conditioner control method based on the fall detection function provided by the application, in the case that the transverse width of the trunk of the target individual is greater than or equal to the first threshold value, and the number of profile points in the first target height interval of the Z-axis coordinate value is greater than or equal to the second threshold value, after the air conditioner sends the first alarm signal, further comprising:

[0017] In the case that the transverse width of the trunk of all individuals is less than the first threshold value, or the number of profile points in the first target height interval of the Z-axis coordinate value is less than the second threshold value, controlling the radar module to continuously monitor the individual profile.

[0018] The air conditioner control method based on the fall detection function provided by the application, in the case that the transverse width of the trunk of the target individual is greater than or equal to the first threshold value, and the number of profile points in the first target height interval of the Z-axis coordinate value is greater than or equal to the second threshold value, after the air conditioner sends the first alarm signal, further comprising:

[0019] In the case that the coordinate values of the lowest profile points of all individuals on the Z-axis are in the second target height interval, controlling the air conditioner to close the voice reminding function;

[0020] The second target height interval is a height interval occupied by a space above the bed body surface in a plurality of subintervals obtained by interval division of the indoor height.

[0021] According to the air conditioner control method based on the fall detection function, after the radar module collects the contour information of each individual in the room, the method further comprises the following steps of:

[0022] In a case where it is determined that the coordinate values of the lowest contour points of at least one individual on the Z axis are all in the third target height interval, a second alarm signal is sent through the opened voice reminding function;

[0023] The second alarm signal is used to alarm all individuals in the room in a case where the individuals in the room climb high.

[0024] The application further provides an air conditioner control device based on a fall detection function, comprising:

[0025] The human body perception module is configured to determine the torso transverse width and the torso longitudinal height based on the contour information of each individual in the room collected by the radar module.

[0026] The fall detection module is configured to control the air conditioner to send a first alarm signal in a case where it is determined that the torso transverse width of the target individual is greater than or equal to a first threshold value, and the coordinate values of each point in the transverse contour point set on the Z axis are all in a first target height interval.

[0027] The first alarm signal is used to acousto-optically alarm all individuals in the room in a case where the target individual falls down. The target individual is any one of the individuals in the room. The first threshold value is determined according to the proportional relationship between the torso transverse width and the torso longitudinal height when a human individual is in an upright state. The transverse contour point set is determined according to the contour information of the torso of the individual in the horizontal direction. The first target height interval is a height interval occupied by a human body lying flat or leaning in a plurality of subintervals obtained by interval division of the indoor height.

[0028] The application further provides an air conditioner comprising an indoor unit and an outdoor unit. The indoor unit is provided with a control processor and a radar module. The radar module is arranged on the surface of the shell of the indoor unit. The air conditioner further comprises a memory and a program or instruction stored on the memory and executable on the control processor. The program or instruction is executed by the control processor to execute the air conditioner control method based on the fall detection function according to any one of the above.

[0029] The radar module comprises a millimeter wave radar.

[0030] The application further provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the air conditioner control method based on a fall detection function according to any one of the above.

[0031] The application further provides a computer program product comprising a computer program which, when executed by a processor, implements the air conditioner control method based on a fall detection function according to any one of the above.

[0032] The application provides an air conditioner control method based on a fall detection function, an air conditioner control device and an air conditioner. The application determines, by a radar module, the transverse width and longitudinal height of a body, and determines, after comparison, that the transverse width of the body is greater than the width in an upright state and the body is mostly distributed in a height range close to the ground in the room in a transverse direction. The application determines to use a first alarm signal to sound and light alarm for a target individual falling down. The application determines the lying posture from the transverse width and longitudinal height of the individual, and further determines the current lying posture is caused by falling down by combining the distribution of the body in the height space in the room. The application has higher accuracy and precision for fall detection without worrying about the leakage of privacy by image processing technology, and optimizes the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0034] Figure 1 Fig. 1 is one of the flow diagrams of the air conditioner control method based on a fall detection function provided by the application;

[0035] Figure 2 Fig. 2 is another of the flow diagrams of the air conditioner control method based on a fall detection function provided by the application;

[0036] Figure 3 Fig. 3 is a structural diagram of the air conditioner control device based on a fall detection function provided by the application;

[0037] Figure 4 Fig. 4 is a structural diagram of the air conditioner provided by the application. DETAILED DESCRIPTION

[0038] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below in conjunction with the drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application.

[0039] The terms "first", "second", and the like in the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually a class and do not limit the number of objects, for example, the first object can be one or more.

[0040] It should be understood that the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the present application, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0041] The terms "include" and "contain" indicate the presence of the described features, whole, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, whole, steps, operations, elements, components and / or sets thereof.

[0042] Figure 1 is one of the flowcharts of the air conditioner control method based on the fall detection function provided by the present application. As shown in Figure 1 The air conditioner control method based on the fall detection function provided by the embodiment of the present application comprises: step 101, determining the torso transverse width and the torso longitudinal height based on the contour information collected by the radar module for each individual in the room.

[0043] It should be noted that the execution subject of the air conditioner control method based on the fall detection function provided by the embodiment of the present application is the air conditioner control device based on the fall detection function.

[0044] The application scenario of the air conditioner control method based on the fall detection function provided by the embodiment of the present application is that when the user activates the air conditioner, the contour position of the individual in the space is perceived by the radar module, and the threshold comparison is performed through the width of the individual contour in the horizontal direction and the length in the vertical direction, so as to realize the detection of the fall of the human individual.

[0045] The radar module can periodically collect all individuals in the indoor space at a specified time interval and send the contour information of each individual to the air conditioner control device based on the fall detection function. The working period of the radar module is not limited in the embodiment of the application.

[0046] Optionally, the radar module can collect data at a default working period.

[0047] Optionally, the user can change the working period of the radar module by issuing a period change instruction, and the radar module can receive and respond to the change instruction to change the working period to the period indicated by the instruction.

[0048] It should be noted that before step 101, the user needs to send an activation instruction through a transmission medium to activate the working mode of the air conditioner, so that the indoor unit of the air conditioner operates at the default wind speed in this mode, and the outdoor unit operates at the default frequency in this mode.

[0049] Optionally, the user can transmit the activation instruction through the control device by using the wireless communication between the control device and the air conditioner, so that the air conditioner system initializes the working mode to start the radar module.

[0050] Optionally, the user can issue the activation instruction through voice interaction, and the air conditioner system receives the activation instruction, initializes the working mode, and starts the radar module.

[0051] Specifically, in step 101, the air conditioner starts the default working mode and opens the fall detection function, and the air conditioner control device based on the fall detection function receives the contour information of each individual in the space of the air conditioner collected by the radar module in real time, analyzes the human torso features contained therein, and obtains the torso transverse width of the torso contour of each individual in the horizontal direction and the torso longitudinal height in the vertical direction.

[0052] Step 102, when the torso transverse width of the target individual is greater than or equal to the first threshold value, and the number of contour points with Z-axis coordinate values in the first target height interval is greater than or equal to the second threshold value, the air conditioner is controlled to issue a first alarm signal

[0053] The first alarm signal is used to sound and light alarm to all individuals in the room in the case of falling of the target individual. The target individual is any one of the individuals in the room. The first threshold value is determined according to the proportional relationship between the torso transverse width and the torso longitudinal height of a human individual in an upright state. The set of transverse contour points is determined according to the contour information of the individual torso in the horizontal direction. The first target height interval is the height interval occupied by the human body lying or leaning in the multiple sub-intervals obtained by interval division of the indoor height.

[0054] It should be noted that the first threshold value refers to a threshold value set for the case that the lateral width of the torso of a human individual is greater when lying flat or slightly leaning than when standing upright. The first threshold value is used for comparison with the current lateral width of the torso to determine whether the corresponding individual is lying flat or slightly leaning. The present embodiment does not make a specific limitation on the value of the first threshold value.

[0055] Exemplarily, the first threshold value can be a fixed threshold value representing a basic level obtained by statistical analysis of a large amount of body size data of different individuals in different age groups, so as to determine whether the individual is in a lying flat or slightly leaning state through size comparison.

[0056] Exemplarily, the first threshold value can also be a floating threshold value corresponding to different individuals obtained by statistical analysis of historical body size data of different individuals in the room, so as to determine whether the individual is in a lying flat or slightly leaning state through size comparison between the lateral width of the torso of the individual and the corresponding first threshold value after sensing the contour of the individual.

[0057] For example, since the ratio between the lateral width and the longitudinal length of the torso of an individual in an upright state is relatively fixed, generally 1:4. Therefore, the first threshold value can set the fitted width value of the longitudinal length at this ratio as the critical value of the lateral width to determine the individual form under the current contour.

[0058] It should be noted that before step 102, the indoor position point of the air conditioner on the diagonal line in the three-dimensional space can be taken as the origin of the coordinate system, and a three-dimensional coordinate system can be established according to the indoor space size. The XoY plane composed of the X axis and the Y axis is the horizontal ground of the room, and the Z axis is the direction extending to the roof perpendicular to the XoY plane as the positive direction. At least two continuous subintervals are divided in the Z axis direction to represent different height ranges in the space.

[0059] Among them, the first target height interval is one of the multiple subintervals corresponding to different height ranges. In particular, the first target height interval is the height interval covered by the torso height of the human body when lying flat or leaning, and the lower limit value of this interval is 0 (i.e. the ground), and the upper limit value is the average torso height when lying flat or leaning.

[0060] Exemplarily, the indoor height space can be divided into three intervals, i.e. [0, 30], [31, 60], [60, +∞], to represent the height interval corresponding to the human body falling, the height interval corresponding to the human body sitting or lying, and the height interval corresponding to the human body standing, respectively.

[0061] Further, the second threshold value refers to a threshold value set for the number of profile points whose Z-axis coordinate values are concentrated in the first target height interval, which are collected when the human body falls. The second threshold value is used to compare with the current trunk profile point set to determine whether the corresponding individual is lying flat or slightly standing up and lying obliquely by judging the body distribution range. The present embodiment does not specifically limit the value of the second threshold value.

[0062] Preferably, the second threshold value can be the number of profile points corresponding to any trunk profile point set.

[0063] It can be understood that the more detailed the height interval division is, the more diverse the body posture represented by the trunk longitudinal height can be.

[0064] Specifically, in step 102, the air conditioner control device based on the fall detection function analyzes the profile range covered by the trunk transverse width of each individual, in combination with the trunk transverse width itself and the first threshold value:

[0065] If the trunk transverse width of the individual is greater than or equal to the first threshold value, and the number of profile points distributed in the first target height interval by the individual is greater than or equal to the second threshold value, it means that the individual has already lain flat or obliquely on the ground, and the target individual is locked, the related elements of the air conditioner are controlled to work cooperatively, and the first alarm signal is sent to alarm all individuals in the room in response to the fall of the target individual.

[0066] On the contrary, it means that the individual does not have a fall behavior, and no alarm is needed.

[0067] The type of the first alarm signal can be one or more types of sound alarm, light alarm or vibration alarm, which is not specifically limited by the present embodiment.

[0068] The present embodiment determines to use the first alarm signal to sound and light alarm for the target individual falling by radar module sensing the trunk transverse width and the trunk longitudinal height of the individual, after comparing to determine that the trunk transverse width is greater than the width in the upright state, and the trunk is mostly distributed transversely in the height range close to the ground in the room. The present embodiment realizes the judgment of the lying posture between the individual's own transverse width and longitudinal height, and further judges that the current lying posture is caused by the fall behavior by combining the distribution of the individual's trunk in the height space in the room, which has higher precision and accuracy for fall detection without worrying about the privacy leakage of image processing technology, and optimizes the user experience.

[0069] On the basis of any of the above embodiments, in the case that the transverse width of the trunk of the target individual is greater than or equal to the first threshold value, and the number of profile points in the Z-axis coordinate value in the first target height interval is greater than or equal to the second threshold value, after the air conditioner is controlled to issue the first alarm signal, the method further comprises: continuously monitoring the profile of the target individual through the radar module in a preset period to determine the latest longitudinal height of the trunk of the target individual.

[0070] Specifically, after step 102, the air conditioner control device based on the fall detection function continuously monitors the profile of the target individual through the radar module in a preset period to determine the latest longitudinal height of the trunk of the target individual.

[0071] In the case that the latest longitudinal height of the trunk of the target individual is greater than or equal to the third threshold value, the air conditioner is controlled to cancel the first alarm signal.

[0072] The third threshold value is determined according to the longitudinal height of the trunk of a human individual in an upright state.

[0073] It should be noted that the third threshold value refers to a threshold value set according to the fact that the longitudinal height of the trunk of a human individual in an upright state is greater than the longitudinal height of the trunk of the human individual in a lying or slightly standing state. The third threshold value is used to compare with the latest longitudinal height of the trunk to determine whether the corresponding individual has recovered from the original lying or slightly standing state to a sitting or standing state. The present embodiment does not limit the value of the third threshold value.

[0074] For example, the third threshold value can be a fixed threshold value representing a basic level obtained by statistically analyzing a large amount of body size data of individuals in different age groups in a sitting or standing state, so as to determine whether the individual is in a sitting or standing state by size comparison.

[0075] For example, the third threshold value can also be a floating threshold value corresponding to different individuals obtained by statistically analyzing the historical body size data of different individuals in the room, so as to compare the longitudinal height of the trunk of the individual with the corresponding third threshold value after sensing the profile of the individual, and determine whether the individual is in a corresponding sitting or standing state.

[0076] Specifically, the air conditioner control device based on the fall detection function analyzes the latest longitudinal height of the trunk with the third threshold value:

[0077] If the latest trunk longitudinal height of the target individual who has already fallen down after a subsequent preset time length is greater than or equal to the third threshold value, it indicates that the target individual has changed from the original lying or leaning on the ground after falling down to the standing state, and it is determined that the target individual has recovered normal action ability within the preset time length after falling down, and the first alarm signal is released to alarm all individuals in the room when the falling behavior is detected.

[0078] On the contrary, it indicates that the target individual still maintains the original lying or leaning on the ground after falling down, and it is determined that the target individual has not recovered normal action ability within the preset time length after falling down, and the first alarm signal is continuously sent to alarm.

[0079] It can be understood that the greater the value of the third threshold value, the higher the requirement for the action ability after falling down. If the value of the third threshold value is the height of the standing human body, it is determined that the target individual has not brought life danger after falling down if he or she recovers to the standing state within a short time, and the alarm can be released.

[0080] After the embodiment of the application determines to use the first alarm signal to sound and light alarm for the falling of the target individual, the radar module is used to continuously sense the target individual who has already fallen down, the latest trunk longitudinal height of the target individual is used for threshold value judgment, and the alarm is released if the trunk longitudinal height has recovered to the normal standing state within a short time. The subsequent action of the falling behavior is continuously monitored, and whether the individual can recover normal action ability within a short time after falling down is used as the basis for changing the alarm mode, thereby optimizing the user experience.

[0081] On the basis of any of the above embodiments, while the latest trunk longitudinal height of the target individual is determined by continuously monitoring through the radar module in the preset period, the method further comprises: receiving the sign information collected by the radar module from the target individual.

[0082] Specifically, after step 102, the air conditioner control device based on the falling detection function continuously monitors the outline of the target individual through the radar module in the preset period to analyze the latest trunk longitudinal height of the target individual. At the same time, the sign information collected by the radar module from the vital signs of the target individual is also received.

[0083] The sign information can be the change trend of the heart rate, breathing rate and other indicators within the preset time length after falling down.

[0084] In the case that the sign information of the target individual does not conform to the healthy sign, and the latest trunk longitudinal height of the target individual is less than the third threshold value, the air conditioner sends a help signal to the remote associated control terminal.

[0085] It should be noted that this case is more suitable for the case where the third threshold value is small, so as to distinguish the sitting and lying state with normal signs and the sitting and lying state with abnormal signs presented by the target individual after falling down for a period of time.

[0086] Specifically, the air conditioner control device based on the fall detection function analyzes the size relationship between the latest longitudinal height of the torso and the third threshold value, and the difference between the sign information of the target individual and the standard healthy sign:

[0087] If the latest longitudinal height of the torso presented by the target individual who has already fallen down after a subsequent preset time period is less than the third threshold value, and the sign information during the period does not conform to the healthy sign, it means that the target individual still maintains the original lying or leaning on the ground after falling down and is in danger of life, and it is determined that the target individual has completely lost normal action ability after falling down, the target individual cannot normally receive the issued alarm, and at the same time, an alarm signal is sent to other individuals in the room, and a help signal is sent to the remote associated control terminal to inform the associated personnel of the target individual.

[0088] If the latest longitudinal height of the torso presented by the target individual who has already fallen down after a subsequent preset time period is less than the third threshold value, and the sign information during the period conforms to the healthy sign, it means that the target individual still maintains the original lying or leaning on the ground after falling down but is not in danger of life, and it is determined that the target individual has not completely lost normal action ability after falling down, and the first alarm signal can be used to alert the indoor individuals that the target individual has fallen down.

[0089] If the latest longitudinal height of the torso presented by the target individual who has already fallen down after a subsequent preset time period is greater than or equal to the third threshold value, and the sign information during the period conforms to the healthy sign, it means that the target individual has changed from the original lying or leaning on the ground after falling down to the standing or standing state, and is not in danger of life, and it is determined that the target individual can recover normal action ability after falling down, and the warning can be removed.

[0090] After the embodiment of the present application decides to use the first alarm signal to sound and light alarm for the falling of the target individual, the radar module is used to continuously sense the target individual who has fallen down, the latest longitudinal height of the torso of the target individual and the sign information are combined to make a judgment, and if the longitudinal height of the torso has not recovered to the normal standing state in a short time and is in an abnormal sign, other related relatives are additionally informed remotely. The subsequent action of the falling behavior is continuously monitored, whether the individual can recover normal action in a short time after falling down is taken as the basis for changing the alarm mode, and the user experience is optimized.

[0091] On the basis of any of the above embodiments, after the radar module based on the profile information collected by each individual in the room, the transverse width of the torso and the longitudinal height of the torso are determined, further comprising: in the case that the transverse width of the torso of all individuals is less than the first threshold value, or the number of profile points in the first target height interval is less than the second threshold value, the radar module is controlled to continue monitoring the individual profile.

[0092] Specifically, after step 101, the air conditioner control device based on the fall detection function analyzes the profile range covered by the transverse width of the torso of each individual, and analyzes the transverse width of the torso itself in combination with the first threshold value:

[0093] If the transverse width of the torso of all individuals is less than the first threshold value, or the number of profile points distributed in the first target height interval is less than the second threshold value, it means that the individuals in the room are currently standing on the ground, and the radar module is controlled to continue monitoring the profile changes of all individuals in the room in the activity state.

[0094] The embodiment of the application determines the transverse width of the torso and the longitudinal height of the torso through the radar module, and decides to continue monitoring the individuals in the room by using the radar module when the transverse width of the torso is less than the width in the standing state or the torso is rarely distributed in the height range close to the ground in the room after comparison. The lying posture is determined from the transverse width and the longitudinal height of the individual, or the distribution of the torso in the height space in the room is further determined to determine that no fall behavior occurs at present, which can avoid misjudgment of fall detection and optimize user experience.

[0095] On the basis of any of the above embodiments, after the radar module based on the profile information collected by each individual in the room, further comprising: in the case that the coordinate values of the lowest profile points of all individuals on the Z axis are in the second target height interval, the air conditioner is controlled to close the voice prompt function.

[0096] Among them, the second target height interval is the height interval occupied by the space above the bed surface in the multiple subintervals obtained by interval division of the indoor height.

[0097] It should be noted that the second target height interval is one of the multiple subintervals corresponding to different height ranges, in particular, the second target height interval is the height interval covered by the bed in the room, the lower limit value of this interval is greater than the upper limit value of the first target height interval, and at least the upper surface of the bed is flat, and the upper limit value is not limited.

[0098] Specifically, the air conditioner control device based on the fall detection function receives the contour information of each individual in the space of the air conditioner collected by the radar module in real time, analyzes the human body trunk features contained therein, and obtains the coordinates of the contour points of each individual about their own trunks in the indoor space coordinate system.

[0099] If the lowest contour points (i.e., the contour points with the smallest Z-axis coordinate values) of all individuals are distributed in the second target height interval, it indicates that the current activity range of the indoor group is on the bed surface, and the group is usually in a sitting or lying state on the bed, without considering the case of standing fall. Therefore, the air conditioner is directly controlled to turn off the voice prompt function until there is an individual in the indoor activity range leaving the bed or all individuals have woken up.

[0100] When the radar module senses that the lowest contour points of all individuals in the indoor are distributed in the height range corresponding to the indoor bed, the embodiment of the present application decides to temporarily turn off the voice prompt function. The spatial position of the indoor individual is roughly judged, the voice prompt function is temporarily turned off for the rest tendency of the group in the bed activity, the fall detection is detected based on the overall environment, the fall detection has higher precision and accuracy, and the user experience is optimized.

[0101] On the basis of any of the above embodiments, after the contour information of each individual in the indoor collected by the radar module, it further includes: in the case that the coordinate values of the lowest contour points of at least one individual on the Z-axis are all in the third target height interval, a second alarm signal is issued through the opened voice prompt function.

[0102] The second alarm signal is used to alarm all individuals in the indoor in the case that an individual in the indoor has a climbing behavior. The third target height interval is a height interval with the maximum upper limit value among a plurality of sub-intervals obtained by interval division of the indoor height.

[0103] It should be noted that the third target height interval is one of a plurality of sub-intervals corresponding to different height ranges. In particular, the third target height interval is a height interval covered by the trunk height when standing or climbing, the lower limit value of the interval is greater than the upper limit value of the second target height interval, and at least the highest contour point of the standing individual is flat, and the upper limit value is the indoor height.

[0104] Specifically, the air conditioner control device based on the fall detection function receives the contour information of each individual in the space of the air conditioner collected by the radar module in real time, analyzes the human body trunk features contained therein, and obtains the coordinates of the contour points of each individual about their own trunks in the indoor space coordinate system.

[0105] If the lowest profile points (i.e. the profile points with the minimum Z-axis coordinate values) of at least one individual are all distributed in the third target height interval, it indicates that the current activity range of the indoor group is at a high position above the ground, and therefore, in consideration of the safety of the special individual, the related elements of the air conditioner are controlled to work cooperatively to send a second alarm signal to alarm all individuals in the room in case of climbing.

[0106] The type of the second alarm signal can be one or more of sound alarm, light alarm or vibration alarm, but the second alarm signal is different from the first alarm signal in composition. The present embodiment does not make specific limitation on this.

[0107] Exemplarily, Figure 2 is a flowchart of a second embodiment of the air conditioner control method based on the fall detection function provided by the present application. As shown in Figure 2 , the present embodiment provides a specific implementation of the air conditioner control method based on the fall detection function:

[0108] (1) After the air conditioner is started, the radar module collects the signals of the individuals in the room, and the vertical height L and the horizontal length S of the human body are obtained by analysis. The indoor space is divided into zones in advance, for example:

[0109] The first plane T1 can be set as the horizontal plane with a distance of 0 from the ground;

[0110] The second plane T2 can be set as the horizontal plane with a distance of 30 from the ground;

[0111] The third plane T3 can be set as the horizontal plane with a distance of 60 from the ground.

[0112] So that when the radar senses that the lowest point height of the human body is in the range of [T2, T3] (i.e. the second target height interval), it is considered that the target is active on the bed body, and no voice reminder is made.

[0113] The radar human body lowest point height range can also be in the range of [T3, +∞] (i.e. the third target height interval), and the voice reminder of the climbing risk behavior is made.

[0114] (2) The horizontal length S of the human body is compared and analyzed with the first threshold value (which can be set as 1 / 4L for example), and if S exceeds 1 / 4L, step (3) is executed, otherwise, it jumps to step (5)

[0115] (3) If the Z-axis coordinate values of the profile points covered by the horizontal length S are mostly distributed in the range of [T1, T2] in the vertical direction (i.e. the first target height interval), the air conditioner is controlled to alarm.

[0116] (4) Continue to monitor the human body contour by radar, if the length in the vertical direction is restored to L within 5 minutes, the alarm issued in step (3) is removed. Otherwise, the air conditioner sends a distress signal to the emergency contact person's mobile phone APP.

[0117] (5) Continuous monitoring.

[0118] When the lowest contour points of all individuals in the room sensed by the radar module are distributed in the indoor height range that is higher than the corresponding height range, the embodiment of the present application decides to use a second alarm signal to sound and light alarm for the climbing behavior of the individual. The spatial position of the individual in the room is roughly judged, the safety needs of the individual active in the high place are directly sounded and lighted, the fall detection is detected based on the overall environment, the fall detection has higher precision and accuracy, and the user experience is optimized.

[0119] Figure 3 is a structural schematic diagram of an air conditioner control device based on a fall detection function provided by the present application. On the basis of any of the above embodiments, as shown in Figure 3 , the device comprises a human body sensing module 310 and a fall detection module 320, wherein:

[0120] The human body sensing module 310 is used to determine the torso transverse width and the torso longitudinal height based on the contour information collected by the radar module for each individual in the room.

[0121] The fall detection module 320 is used to control the air conditioner to issue a first alarm signal in the case that the torso transverse width of the target individual is greater than or equal to a first threshold value, and the coordinate value of each point in the transverse contour point set on the Z axis is in a first target height interval.

[0122] The first alarm signal is used to sound and light alarm for all individuals in the room in the case that the target individual falls. The target individual is any one of the individuals in the room. The first threshold value is determined according to the proportional relationship between the torso transverse width and the torso longitudinal height when the human individual is in an upright state. The transverse contour point set is determined according to the contour information of the individual's torso in the horizontal direction. The first target height interval is the height interval occupied by the human body lying or leaning in the multiple sub-intervals obtained by interval division of the indoor height.

[0123] Specifically, the human body sensing module 310 and the fall detection module 320 are sequentially electrically connected.

[0124] The human body perception module 310 opens the fall detection function while the air conditioner starts the default working mode, and then receives the contour information of each individual in the space where the air conditioner is located, which is collected by the radar module in real time, analyzes the human body trunk features contained therein, and obtains the trunk transverse width of the trunk contour of each individual in the horizontal direction and the trunk longitudinal height in the vertical direction.

[0125] The fall detection module 320 analyzes the contour range covered by the trunk transverse width of each individual, and analyzes the trunk transverse width itself and the first threshold value:

[0126] If the trunk transverse width of the individual is greater than or equal to the first threshold value, and the number of contour points of the individual distributed in the first target height interval is greater than or equal to the second threshold value, it means that the individual has lain or leaned on the ground, and the target individual is locked, the related elements of the air conditioner are controlled to work cooperatively, and the first alarm signal is sent to alarm all individuals in the room in response to the fall of the target individual.

[0127] Otherwise, it means that the individual does not have a fall behavior, and no alarm is needed.

[0128] Optionally, the device further comprises a fall human body perception module and a first alarm module, wherein:

[0129] The fall human body perception module is configured to continue monitoring by the radar module in a preset period to determine the latest trunk longitudinal height of the target individual.

[0130] The first alarm module is configured to control the air conditioner to cancel the first alarm signal when it is determined that the latest trunk longitudinal height of the target individual is greater than or equal to a third threshold value.

[0131] The third threshold value is determined according to the trunk longitudinal height of a human individual in an upright state.

[0132] Optionally, the device further comprises a vital sign monitoring module and a help module, wherein:

[0133] The vital sign monitoring module is configured to receive the vital sign information of the target individual collected by the radar module.

[0134] The help module is configured to control the air conditioner to send a help signal to a remote associated control terminal when it is determined that the vital sign information of the target individual does not conform to a healthy vital sign, and the latest trunk longitudinal height of the target individual is less than the third threshold value.

[0135] Optionally, the device further comprises a monitoring module, wherein:

[0136] The monitoring module is configured to control the radar module to continuously monitor the individual profile when it is determined that the torso transverse width of all individuals is less than a first threshold value, or the number of profile points at the Z-axis coordinate value in the first target height interval is less than a second threshold value.

[0137] Optionally, the device further comprises a voice reminder closing module, wherein:

[0138] The voice reminder closing module is configured to control the air conditioner to close the voice reminder function when it is determined that the coordinate values of the lowest profile points of all individuals on the Z-axis are in the second target height interval.

[0139] The second target height interval is a height interval occupied by a space above the bed surface in a plurality of sub-intervals obtained by interval division of the indoor height.

[0140] Optionally, the device further comprises a voice reminder executing module, wherein:

[0141] The voice reminder executing module is configured to issue a second alarm signal through the voice reminder function after being turned on when it is determined that the coordinate values of the lowest profile points of at least one individual on the Z-axis are in the third target height interval.

[0142] The second alarm signal is used to alarm all individuals in the room in the case that an individual in the room climbs high, and the third target height interval is a height interval with the maximum upper limit value in a plurality of sub-intervals obtained by interval division of the indoor height.

[0143] The air conditioner control device based on the fall detection function provided by the embodiments of the present application is used to execute the air conditioner control method based on the fall detection function described above, and has the same beneficial effects as the air conditioner control method based on the fall detection function provided by the present application, and thus will not be described here.

[0144] The embodiments of the present application perceive the torso transverse width and the torso longitudinal height of an individual through a radar module, and when it is determined through comparison that the torso transverse width is greater than the width in the upright state and the torso is mostly distributed in the height range close to the ground in the room, it is decided to use a first alarm signal to sound and light alarm for the target individual falling down. The lying posture is judged from the transverse width and the longitudinal height of the individual, and the distribution of the torso of the individual in the indoor height space is further judged to determine that the current lying posture is caused by the falling behavior, which has higher precision and accuracy for fall detection without worrying about the leakage of privacy by image processing technology, and optimizes the user experience.

[0145] Figure 4is a structural schematic diagram of an air conditioner provided by the present application. On the basis of any of the above embodiments, as shown in the figure, the air conditioner comprises an indoor unit 410 and an outdoor unit 420, the indoor unit 410 is provided with a control processor 411 and a radar module 412, the radar module 412 is arranged on the surface of the shell of the indoor unit. It also includes a memory and a program or instruction stored on the memory and executable on the control processor 411, which executes the air conditioner control method based on the fall detection function when executed by the control processor 411. Figure 4

[0146] Among them, the radar module 412 includes a millimeter wave radar.

[0147] Specifically, the air conditioner is provided with an indoor unit 410 and an outdoor unit 420, and the radar module 412 is embedded on the surface of the shell of the indoor unit 410. The control processor 411 receives the contour information of each individual in the space of the air conditioner collected by the radar module 412 in real time, analyzes the human torso features contained therein, and obtains the torso transverse width of the torso contour of each individual in the horizontal direction and the torso longitudinal height in the vertical direction.

[0148] The control processor 411 analyzes the contour range covered by the torso transverse width of each individual, combined with the torso transverse width itself and the first threshold value:

[0149] If the torso transverse width of the individual is greater than or equal to the first threshold value, and the number of contour points of the individual distributed in the first target height interval is greater than or equal to the second threshold value, it means that the individual has lain or leaned on the ground, and the target individual is locked, the related elements of the air conditioner are controlled to work together, and the first alarm signal is sent to alarm all individuals in the room in response to the fall of the target individual.

[0150] On the contrary, it means that the individual does not have a fall behavior and does not need to be alarmed.

[0151] The embodiment of the present application perceives the torso transverse width and the torso longitudinal height of the individual through the radar module, determines that the torso transverse width is greater than the width in the upright state after comparison, and the torso is mostly distributed in the height range close to the ground in the room, and decides to use the first alarm signal to sound and light alarm for the target individual falling. Realize the judgment between the horizontal posture from the transverse width and the longitudinal height of the individual, and further judge that the current horizontal posture is caused by the fall behavior by combining the distribution of the torso of the individual in the height space in the room. It has higher precision and accuracy for fall detection without worrying about the leakage of privacy by image processing technology, optimizes the user experience.

[0152] ​In addition, the logic instructions in the above-mentioned memory can be implemented in the form of a software function unit and sold or used as an independent product, and can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the parts that contribute to the prior art or parts of the technical solutions can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0153] In another aspect, the present application also provides a computer program product, which comprises a computer program, the computer program can be stored on a non-transitory computer readable storage medium, and the computer program can be executed by a processor to enable a computer to execute the air conditioner control method based on the fall detection function provided by the above-mentioned method, the method comprising: determining the torso transverse width and the torso longitudinal height based on the contour information collected by the radar module for each individual in the room; in the case that the torso transverse width of the target individual is greater than or equal to the first threshold value, and the number of contour points with Z-axis coordinate values in the first target height interval is greater than or equal to the second threshold value, controlling the air conditioner to issue a first alarm signal; wherein the first alarm signal is used to sound and light alarm to all individuals in the room in the case that the target individual falls down; the target individual is any one of the individuals in the room; the first threshold value is determined according to the proportional relationship between the torso transverse width and the torso longitudinal height when the human individual is in an upright state; the transverse contour point set is determined according to the contour information of the individual torso in the horizontal direction; and the first target height interval is a height interval occupied by a human body lying flat or leaning in a plurality of subintervals obtained by interval division of the indoor height.

[0154] In yet another aspect, the present application also provides a non-transitory computer readable storage medium having stored thereon a computer program, which, when executed by a processor, implements the air conditioner control method based on the fall detection function provided by the above method, which comprises: determining the torso transverse width and the torso longitudinal height based on the contour information collected by the radar module for each individual in the room; in the case that the torso transverse width of the target individual is greater than or equal to the first threshold value, and the number of contour points with Z-axis coordinate values in the first target height interval is greater than or equal to the second threshold value, controlling the air conditioner to issue a first alarm signal; wherein the first alarm signal is used to sound and light alarm to all individuals in the room in the case that the target individual falls; the target individual is any one of the individuals in the room; the first threshold value is determined according to the proportional relationship between the torso transverse width and the torso longitudinal height when the human individual is in an upright state; the transverse contour point set is determined according to the contour information of the individual's torso in the horizontal direction; and the first target height interval is the height interval occupied by the human body lying or leaning in the plurality of subintervals obtained by interval division of the indoor height.

[0155] The device embodiments described above are only schematic, wherein the units illustrated as separate components may or may not be physically separate, and the components illustrated as units may or may not be physical units, i.e., may be located in one place or distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. Those skilled in the art can understand and implement without creative labor.

[0156] Through the above description of the embodiments, those skilled in the art can clearly understand that the embodiments can be realized by means of software plus necessary general hardware platforms, and of course can also be realized by hardware. Based on such understanding, the above technical solutions, essentially or in the sense of contribution to the prior art, can be embodied in the form of a software product. The computer software product can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0157] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of controlling an air conditioner based on a fall detection function, characterized by, The method comprises the following steps: Based on the contour information collected by the radar module for each individual in the room, the transverse width of the torso and the longitudinal height of the torso are determined; In the case where the transverse width of the torso of the target individual is greater than or equal to the first threshold value, and the number of contour points with Z-axis coordinate values in the first target height interval is greater than or equal to the second threshold value, the air conditioner is controlled to issue a first alarm signal; The first alarm signal is used to sound and light alarm to all individuals in the room in the case of falling of the target individual; the target individual is any one of the individuals in the room; the first threshold value is determined according to the proportional relationship between the transverse width of the torso and the longitudinal height of the torso of a human individual in an upright state; the transverse contour point set is determined according to the contour information of the individual's torso in the horizontal direction; the first target height interval is the height interval occupied by the human body lying or leaning in the multiple sub-intervals obtained by interval division of the indoor height, and the lower limit value of the first target height interval is 0, i.e. the ground. 2.The air conditioner control method based on a fall detection function according to claim 1, characterized in that, After the air conditioner issues the first alarm signal in the case where the transverse width of the torso of the target individual is greater than or equal to the first threshold value, and the number of contour points with Z-axis coordinate values in the first target height interval is greater than or equal to the second threshold value, the method further comprises the following steps: Continuously monitoring through the radar module within a preset period to determine the latest longitudinal height of the torso of the target individual; In the case where the latest longitudinal height of the torso of the target individual is greater than or equal to the third threshold value, the air conditioner is controlled to cancel the first alarm signal; The third threshold value is determined according to the longitudinal height of the torso of a human individual in an upright state. 3.The air conditioner control method based on a fall detection function according to claim 2, characterized in that, While continuously monitoring through the radar module within a preset period to determine the latest longitudinal height of the torso of the target individual, the method further comprises the following steps: Receiving the sign information collected by the radar module for the target individual; In the case where the sign information of the target individual does not conform to the healthy sign, and the latest longitudinal height of the torso of the target individual is less than the third threshold value, the air conditioner is controlled to send a help signal to a remote associated control terminal.

4. The air conditioner control method based on a fall detection function according to any one of claims 1 to 3, characterized in that, After determining the transverse width of the torso and the longitudinal height of the torso based on the contour information collected by the radar module for each individual in the room, the method further comprises the following steps: In the case where the transverse width of the torso of all individuals is less than the first threshold value, or the number of contour points with Z-axis coordinate values in the first target height interval is less than the second threshold value, the radar module is controlled to continuously monitor the individual contour. 5.The air conditioner control method based on a fall detection function according to claim 4, characterized in that, After the contour information collected by the radar module for each individual in the room, the method further comprises the following steps: In the case where the coordinate values of the lowest contour points of all individuals on the Z-axis are in the second target height interval, the air conditioner is controlled to turn off the voice reminder function; The second target height interval is the height interval occupied by the space above the surface of the bed in the multiple sub-intervals obtained by interval division of the indoor height. 6.The air conditioner control method based on a fall detection function according to claim 4, characterized in that, After the contour information collected by the radar module for each individual in the room, the method further comprises the following steps: In a case where it is determined that the coordinate values of the lowest contour points of at least one individual on the Z axis are all in the third target height interval, a second alarm signal is sent through the voice reminding function after being turned on; The second alarm signal is used to alarm all individuals in the room in a case where the individuals in the room climb up; and the third target height interval is a height interval with the maximum upper limit value among a plurality of sub-intervals obtained by interval division of the indoor height. 7.A method of controlling an air conditioner based on a fall detection function, characterized by, The method comprises: a human body perception module configured to determine a torso transverse width and a torso longitudinal height based on contour information collected by the radar module for each individual in the room; a fall detection module configured to control the air conditioner to send a first alarm signal in a case where the torso transverse width of a target individual is greater than or equal to a first threshold value, and the coordinate values of all points in a transverse contour point set on the Z axis are all in a first target height interval; The first alarm signal is used to sound and light alarm all individuals in the room in a case where the target individual falls; the target individual is any one of the individuals in the room; the first threshold value is determined according to the proportional relationship between the torso transverse width and the torso longitudinal height of a human individual in an upright state; the transverse contour point set is determined according to the contour information of the torso of the individual in the horizontal direction; and the first target height interval is a height interval occupied by a human body lying flat or leaning in a plurality of sub-intervals obtained by interval division of the indoor height, and the lower limit value of the first target height interval is 0, i.e., the ground.

8. An air conditioner comprising an indoor unit and an outdoor unit, characterized by comprising: The indoor unit is provided with a control processor and a radar module, and the radar module is arranged on the surface of the shell of the indoor unit; further comprising a memory and a program or instructions stored on the memory and executable on the control processor, the program or instructions being executed by the control processor to perform the air conditioner control method based on the fall detection function according to any one of claims 1 to 6; The radar module comprises a millimeter wave radar. 9.A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the air conditioner control method based on the fall detection function according to any one of claims 1 to 6.

10. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the air conditioner control method based on the fall detection function according to any one of claims 1 to 6.

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