CN115993661A - Human motion detection method, device and air treatment system - Google Patents
Human motion detection method, device and air treatment system Download PDFInfo
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Abstract
The embodiment of the invention provides a method and a device for detecting human actions and an air treatment system. Judging whether human actions occur according to the changes of two light intensity signals obtained by simultaneously detecting the first wave band light and the second wave band light in the indoor environment light, wherein the changes of the light intensity signals generated after the first wave band light and the second wave band light are shielded are different, and judging by combining the changes of the two light intensity signals, so that the detection result is reliable and high in accuracy; the complex processing is not needed, the response is rapid, and the calculated amount is small; in addition, the active luminous component is not required, so that the cost is low and the installation is convenient; in addition, it is not necessary to obtain privacy-related data such as video images of users, and the security is high.
Description
Technical Field
The present invention relates to the field of air treatment, and in particular, to a method and apparatus for detecting human motion, and an air treatment system.
Background
In recent years, motion detection has been widely used in various fields. For example, human motion recognition and detection has wide application in the fields of smart home, medical health, smart care, motion capture, and the like.
Currently, human motion recognition and detection is mostly performed based on video images or based on information collected by wearable devices integrated with inertial sensing units (IMUs, inertial measurement unit). For example, image recognition is performed on the acquired video images to detect human actions; or detecting the action of the user of the wearable device according to the acquisition signal of the inertial sensing unit.
In addition, a method of detecting the motion of a person using an infrared light sensor has also been proposed. For example, an active infrared light sensor includes a transmitting unit and a receiving unit, and the transmitting unit emits infrared light, and when the emitted infrared light is blocked and the light signal received by the receiving unit changes, a human motion is detected.
It should be noted that the foregoing description of the background art is only for the purpose of providing a clear and complete description of the technical solution of the present invention and is presented for the convenience of understanding by those skilled in the art. The above-described solutions are not considered to be known to the person skilled in the art simply because they are set forth in the background of the invention section.
Disclosure of Invention
However, the inventor finds that the detection method based on the video image is easy to violate the privacy of the user, and the human body action recognition based on the wearable device requires the user to wear the device all the time, so that the use is inconvenient and the detection precision is not high. The infrared light sensor detects the motion of a person, is easily interfered by environmental noise, so that the detection result is inaccurate, and in addition, the active infrared light sensor has higher cost and higher requirements on design and installation.
In order to solve at least one of the above problems, embodiments of the present invention provide a method, an apparatus, and an air processing system for detecting a human motion, where whether a human motion occurs is determined according to a change of two light intensity signals obtained by detecting a first band light and a second band light in indoor environment light at the same time, and the detection result is reliable and accurate by combining the two light intensity signal changes because the light intensity signal changes generated after the first band light and the second band light are blocked are different; the complex processing is not needed, the response is rapid, and the calculated amount is small; in addition, the active luminous component is not required, so that the cost is low and the installation is convenient; in addition, it is not necessary to obtain privacy-related data such as video images of users, and the security is high.
According to a first aspect of an embodiment of the present invention, there is provided a method of detecting a motion of a person, the method comprising: detecting first band light and second band light in indoor environment light at the same time to obtain a first light intensity signal and a second light intensity signal corresponding to the same time; and determining whether a human motion has occurred in the room according to the change of the first light intensity signal and the change of the second light intensity signal.
According to a second aspect of embodiments of the present invention, there is provided a detection apparatus for human motion, the apparatus comprising: the detection module is used for detecting the first wave band light and the second wave band light in indoor environment light at the same time to obtain a first light intensity signal and a second light intensity signal corresponding to the same time; and a judging module for determining whether the human motion occurs in the room according to the change of the first light intensity signal and the change of the second light intensity signal.
According to a third aspect of an embodiment of the present invention, there is provided an air treatment system comprising: a detection device of a human motion according to a second aspect of an embodiment of the present invention; and an air treatment device for performing air treatment based on the detection result of the human motion by the detection device.
One of the beneficial effects of the embodiment of the invention is that: judging whether human actions occur according to the changes of two light intensity signals obtained by simultaneously detecting the first wave band light and the second wave band light in the indoor environment light, wherein the changes of the light intensity signals generated after the first wave band light and the second wave band light are shielded are different, and judging by combining the changes of the two light intensity signals, so that the detection result is reliable and high in accuracy; the complex processing is not needed, the response is rapid, and the calculated amount is small; in addition, the active luminous component is not required, so that the cost is low and the installation is convenient; in addition, it is not necessary to obtain privacy-related data such as video images of users, and the security is high.
Specific embodiments of the invention are disclosed in detail below with reference to the following description and drawings, indicating the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not limited in scope thereby. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims.
The feature information described and illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments in combination with or instead of the feature information in other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
Many aspects of the invention can be better understood with reference to the following drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention. Corresponding parts in the drawings may be exaggerated or reduced in order to facilitate the illustration and description of some parts of the present invention. The elements and feature information described in one drawing or embodiment of the invention may be combined with the elements and feature information shown in one or more other drawings or embodiments. Furthermore, in the drawings, like reference numerals designate corresponding parts throughout the several views, and may be used to designate corresponding parts as used in more than one embodiment.
In the drawings:
FIG. 1 is a flowchart of a method for detecting a human motion according to embodiment 1 of the present invention;
FIG. 2 is another flow chart of the detection method of the human action of embodiment 1 of the present invention;
FIG. 3 is a diagram showing the ratio of the variation degrees of the first light intensity signal and the second light intensity signal according to the embodiment 1 of the present invention;
FIG. 4 is a block diagram of a human motion detection device according to embodiment 2 of the present invention;
fig. 5 is a structural view of an air treatment system of embodiment 3 of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
Example 1
Embodiment 1 of the present invention provides a method for detecting a human motion. Fig. 1 is a flowchart of a method for detecting a human motion according to embodiment 1 of the present invention. As shown in fig. 1, the method includes:
step 101: detecting first band light and second band light in indoor environment light at the same time to obtain a first light intensity signal and a second light intensity signal corresponding to the same time; and
step 102: and determining whether human actions occur in the room according to the change of the first light intensity signal and the change of the second light intensity signal.
In this way, according to the change of two light intensity signals obtained by detecting the first wave band light and the second wave band light in the indoor environment light at the same time, whether the action of a person occurs is judged, and because the change of the light intensity signals generated after the first wave band light and the second wave band light are shielded is different, the judgment is carried out by combining the change of the two light intensity signals, so that the detection result is reliable and has high accuracy; the complex processing is not needed, the response is rapid, and the calculated amount is small; in addition, the active luminous component is not required, so that the cost is low and the installation is convenient; in addition, it is not necessary to obtain privacy-related data such as video images of users, and the security is high.
In the embodiment of the invention, the first band light and the second band light in the indoor environment light are detected. The ambient light in the room may be various lights present in the room, for example, the ambient light in the room includes: natural light radiated from the outside into the room, lights in the room, lights emitted from other luminous objects, and the like.
In the embodiment of the present invention, for the first band light and the second band light, the first band light and the second band light may be different, for example, the first band light and the second band light are completely different, or the first band light includes the second band light, or the first band light and the second band light partially overlap.
For example, the first band of light is 400nm to 750nm visible light and the second band of light is 800nm to 900nm infrared light, i.e., the first band and the second band are completely different;
for example, the first band of light is 400nm to 900nm (visible light and infrared light), and the second band of light is 800nm to 900nm of infrared light, i.e., the first band of light includes the second band of light;
for example, the first band light is 400nm to 850nm light (visible light and infrared light), and the second band light is 800nm to 900nm infrared light, that is, the first band and the second band partially overlap.
For example, the first band of light includes visible light and the second band of light includes infrared light. For another example, the first band of light includes red, blue, or green light in visible light.
For example, the first band light includes red light in visible light, and the second band light includes infrared light, so that the first light intensity signal obtained by detecting the first band light is stronger due to more red light components of the visible light, and the discrimination degree through threshold comparison is high, so that the reliability and accuracy of detection can be further improved.
Since the bands of the first band light and the second band light are not exactly the same, when the first band light and the second band light are blocked or partially blocked due to the action of a person in the room, the change of the detected light intensity signal thereof is different.
For example, the first band of light includes visible light, visible light is in a polarized light type, and after the ambient light is blocked to a certain extent, the detected intensity of the light intensity signal drops more; the second wave band light comprises infrared light, the infrared light deflects radiation type light, the surface with a certain temperature can radiate infrared light, and after the ambient light is blocked by a certain degree, the decrease of the intensity of the detected light intensity signal is less than that of visible light; in addition, since the change of the outdoor environment (for example, the shielding of light by the cloud) is slow and the influence of the motion of the person is fast, the influence of the background (outdoor environment) on the detection result can be eliminated by introducing time, that is, detecting based on the change of the light intensity signal.
In step 101, the first band light and the second band light in the indoor environment light are detected simultaneously, so as to obtain a first light intensity signal and a second light intensity signal corresponding to the same time. In the embodiment of the invention, the first band light and the second band light in the indoor environment light can be detected simultaneously by the detection module, so that a first light intensity signal and a second light intensity signal corresponding to the same time are obtained.
For example, the detection module includes a first detection module and a second detection module, the first detection module is a first light sensor with a response band of a first band, and the second detection module is a second light sensor with a response band of a second band. That is, the first light sensor outputs a first light intensity signal of the first band light in real time, and the second light sensor outputs a second light intensity signal of the second band light in real time.
For another example, the detection module is a third detection module, which detects the first band light and the second band light at the same time, so as to obtain a first light intensity signal and a second light intensity signal corresponding to the same time.
For example, the third detection module is a third light sensor whose response band includes a first band and a second band, and the third light sensor outputs a first light intensity signal of the first band light and a second light intensity signal of the second band light, respectively, in real time.
In addition, the first light intensity signal and the second light intensity signal corresponding to the same time may be stored in time series.
In an embodiment of the present invention, the first detection module and the second detection module, i.e. the first light sensor and the second light sensor, may be arranged adjacent to each other. Alternatively, as described above, the detection of the first band light and the second band light is performed simultaneously by one third detection module, i.e., a third light sensor.
In the embodiment of the present invention, the detection range for the human motion may be set according to the actual situation. For example, the entire indoor space, or a specific region of the room.
In addition, the number of the first detection modules and the second detection modules, or the number of the third detection modules may be set according to actual needs, that is, the first band light and the second band light within the detection range of the set human motion can be detected.
For example, when the detection range of the set motion of the person is large, the set detection range is covered by providing a plurality of first detection modules and a plurality of second detection modules in the room, or the set detection range is covered by providing a plurality of third detection modules in the room.
In an embodiment of the invention, the detection module may be arranged at the lower part and/or the bottom of the room. In this way, since natural light or lamplight is generally irradiated from the upper or middle portion of the room, the influence of a person on light can be better detected by the photosensor.
After the first light intensity signal and the second light intensity signal corresponding to the same time are obtained, in step 102, it is determined whether a human motion has occurred in the room according to the change of the first light intensity signal and the change of the second light intensity signal.
In an embodiment of the present invention, the change of the first light intensity signal and the change of the second light intensity signal are changes in the value of the light intensity signal.
For example, the change of the first light intensity signal is a change of the light intensity signal value of the first light intensity signal at the current time t1 with respect to the previous time t0, and the change of the second light intensity signal is a change of the light intensity signal value of the second light intensity signal at the current time t1 with respect to the previous time t 0.
That is, at each time, it is possible to determine whether or not a human motion has occurred in the room in real time.
In the embodiment of the invention, whether the human action occurs in the room is determined according to the change of the first light intensity signal and the change of the second light intensity signal.
In one embodiment, it may be determined whether or not a human motion has occurred in the room based on the first amount of change in the first light intensity signal and the second amount of change in the second light intensity signal over a prescribed time. The first variation is the difference between the light intensity signal values of the first light intensity signal before and after the prescribed time, and the second variation is the difference between the light intensity signal values of the second light intensity signal before and after the prescribed time.
For example, in the time from time t0 to time t1, the first variation of the first light intensity signal (GA) is GA1-GA0, the second variation of the second light intensity signal (GB) is GB1-GB0, wherein GA1 is the light intensity signal value of the first light intensity signal at time t1, GA0 is the light intensity signal value of the first light intensity signal at time t0, GB1 is the light intensity signal value of the second light intensity signal at time t1, and GB0 is the light intensity signal value of the second light intensity signal at time t 0.
For example, when GA1-GA0 and GB1-GB0 are both greater than a preset threshold, or when GA1-GA0 and GB1-GB0 are each greater than different thresholds, it is determined that a human action has occurred indoors.
In the embodiment of the present invention, the predetermined time is, for example, a time interval between the current time and the previous time. The specific time length of the prescribed time may be set according to the actual situation.
In another embodiment, whether the human action occurs in the room may be determined according to the first variation degree of the first light intensity signal and the second variation degree of the second light intensity signal within a prescribed time;
for example, the first degree of change is a ratio of a difference between the light intensity signal values of the first light intensity signal before and after the prescribed time to the light intensity signal value of the first light intensity signal before the prescribed time, and the second degree of change is a ratio of a difference between the light intensity signal values of the second light intensity signal before and after the prescribed time to the light intensity signal value of the second light intensity signal before the prescribed time.
For example, in the time from the time t0 to the time t1, the first degree of change and the second degree of change are (GA 1-GA 0)/GA 0 and (GB 1-GB 0)/GB 0, respectively, where GA1 is the light intensity signal value of the first light intensity signal at the time t1, GA0 is the light intensity signal value of the first light intensity signal at the time t0, GB1 is the light intensity signal value of the second light intensity signal at the time t1, and GB0 is the light intensity signal value of the second light intensity signal at the time t 0.
In the embodiment of the invention, whether the human action occurs in the room can be determined according to the relation between the first change degree of the first light intensity signal and the second change degree of the second light intensity signal. In this way, by using the difference in response of the first and second band lights to the blocked light to determine whether or not a human motion has occurred in the room, the processing speed and detection accuracy can be further improved.
For example, whether or not a human motion has occurred in the room is determined based on the relationship between the ratio of the first degree of change to the second degree of change or the difference between the first degree of change and the second degree of change and the first threshold. For example, the ratio of the first degree of variation to the second degree of variation may be [ (GA 1-GA 0)/GA 0]/[ (GB 1-GB 0)/GB 0]; the difference between the first degree of variation and the second degree of variation may be [ (GA 1-GA 0)/GA 0] - [ (GB 1-GB 0)/GB 0], wherein GA1 is the light intensity signal value of the first light intensity signal at time t1, GA0 is the light intensity signal value of the first light intensity signal at time t0, GB1 is the light intensity signal value of the second light intensity signal at time t1, and GB0 is the light intensity signal value of the second light intensity signal at time t 0.
In the embodiment of the present invention, when the ratio of the first variation degree to the second variation degree is used to compare with the first threshold value, and when the difference between the first variation degree and the second variation degree is used to compare with the first threshold value, the value of the first threshold value may be different, and the specific value may be set according to the actual situation.
For example, the first wavelength band light may include a first wavelength that is less than a second wavelength band light may include a first wavelength band that is substantially different from the second wavelength band, or the first wavelength band may include a second wavelength band, or the first and second wavelength bands may partially overlap.
For example, the first band of light comprises 400nm to 850nm and the second band of light comprises 800nm to 900nm, and then the first band of light comprises 650nm wavelengths less than 850nm wavelengths comprised by the second band of light.
When the ratio or difference between the first degree of change and the second degree of change is greater than the first threshold, it is determined that a human action has occurred in the room.
In the embodiment of the present invention, the first threshold may be set according to actual situations. The first threshold is determined, for example, based on at least one of weather information, time information, and illumination intensity.
For example, when the illumination is strong in sunny days, the indoor light is sufficient, and when the light is blocked by a person, the change of the detection signal is obvious, so that the first threshold value can be set to be a larger value;
for another example, when the time is early morning, the light in the room is insufficient, and when the light is blocked by a person, the change in the detection signal thereof may not be obvious, and therefore, the first threshold value may be set to a smaller value.
Therefore, a reasonable first threshold value can be set according to the actual light condition, so that the reliability and accuracy of the detection result are further improved.
In the embodiment of the invention, whether the human action occurs in the room can also be determined according to the first change degree of the first light intensity signal and the second change degree of the second light intensity signal respectively.
For example, when the first degree of change is greater than the third threshold T3 and the second degree of change is greater than the fourth threshold T4, it is determined that a human motion has occurred indoors.
Thus, when the degree of change of the first band light and the second band light is large and the degree of change of the first band light is larger than the degree of change of the second band light, it is determined that a human motion is generated indoors, and the reliability of the detection result is further improved.
In step 102, when the change value of the first light intensity signal and/or the second light intensity signal at the front and rear moments is smaller than the second threshold value, it is determined that no human action occurs in the room.
In the embodiment of the present invention, for the first light intensity signal and the second light intensity signal, the values of the second threshold values used for comparison may be different, for example, the second threshold value used for comparison with the first light intensity signal is greater than the second threshold value used for comparison with the second light intensity signal, and the specific value of the second threshold value may be set according to the actual situation.
In the embodiment of the present invention, the fact that the change value of the first light intensity signal and/or the second light intensity signal at the front and rear moments is smaller than the second threshold value means that the first light intensity signal and/or the second light intensity signal is substantially unchanged at the front and rear moments.
In this case, the degree of change with time is not determined, and it is determined that there is no human operation by the fact that the value of the light intensity signal is not substantially changed, so that the calculation amount can be reduced.
In the embodiment of the invention, the detection method of the actions of the person can be started under a certain condition.
For example, as shown in fig. 1, the method further includes:
step 103: acquiring at least one of time information and illumination intensity; and
step 104: and starting the detection method according to at least one of the time information and the illumination intensity.
Therefore, the detection method is started under the condition of good light conditions, so that the reliability and the accuracy of the detection result are ensured.
For example, when the time is night, there is no natural light in the room, but the normal light may not include light of the second wavelength band, or the light component of the second wavelength band is small, so that reliable detection cannot be performed.
In an embodiment of the present invention, for example, as shown in fig. 1, the method further includes:
step 105: when the change trend of the first light intensity signal is opposite to the change trend of the second light intensity signal, determining the current first light intensity signal and second light intensity signal as abnormal data; and
step 106: the abnormal data is excluded.
The change trend of the first light intensity signal and the change trend of the second light intensity signal are generally consistent, when the change trend of the first light intensity signal and the change trend of the second light intensity signal are opposite, an abnormal condition is indicated, and then the current detection signal is directly regarded as abnormal data to be eliminated, namely, the judgment of the action of a person in the next step is not carried out, the unnecessary calculation power occupation can be reduced, and the running load of a processor is lightened.
For example, the trend of the first light intensity signal and the second light intensity signal is determined by the difference between the light intensity signal value at the current time t1 and the light intensity signal value at the previous time t 0. When the difference value of the first light intensity signal is a positive value and the difference value of the second light intensity signal is a negative value, the change trend of the first light intensity signal and the second light intensity signal is opposite.
In the embodiment of the present invention, step 103, step 104, step 105 and step 106 in fig. 1 are optional steps.
Fig. 2 is another flowchart of the detection method of the human action of embodiment 1 of the present invention. As shown in fig. 2, the method includes:
step 201: judging whether the current time is daytime or not; when the judgment result is yes, the step 202 is entered, and when the judgment result is no, the step returns;
step 202: detecting first band light and second band light in indoor environment light at the same time to obtain a first light intensity signal and a second light intensity signal corresponding to the same time;
step 203: judging whether the variation trend of the first light intensity signal is opposite to the variation trend of the second light intensity signal, when the judgment result is yes, entering a step 204, and when the judgment result is no, entering a step 205;
step 204: determining the current first light intensity signal and the second light intensity signal as abnormal data;
step 205: judging whether the change value of the first light intensity signal and/or the second light intensity signal at the front moment and the rear moment is smaller than a second threshold value, when the judgment result is yes, entering a step 206, and when the judgment result is no, entering a step 207;
step 206: determining that no human action is occurring in the room;
step 207: judging whether the ratio or the difference between the first variation degree of the first light intensity signal and the second variation degree of the second light intensity signal is larger than a first threshold value; when the determination result is "yes", step 208 is entered, and when the determination result is "no", step 206 is entered;
step 208: it is determined that a human action has occurred in the room.
In the embodiment of the present invention, the implementation of each step may refer to the specific description of the related steps in fig. 1, which is not repeated herein.
Fig. 3 is a diagram showing the ratio of the degree of change of the first light intensity signal and the second light intensity signal according to embodiment 1 of the present invention. As shown in fig. 3, in the period from time t1 to time t2 and time t3 to time t4, if the ratio of the first degree of change of the first light intensity signal to the second degree of change of the second light intensity is smaller than the first threshold value, it is determined that no human action occurs in the period from time t1 to time t2 and time t3 to time t 4; if the ratio of the first degree of change of the first light intensity signal to the second degree of change of the second light intensity is greater than the first threshold value in the period from time t5 to time t6 and from time t7 to time t8, it is determined that the human motion has occurred in the period from time t5 to time t6 and from time t7 to time t 8.
In the embodiment of the present invention, the ordinate shown in fig. 3 is a ratio of the first variation degree of the first light intensity signal to the second variation degree of the second light intensity signal, and in addition, the ordinate may be a difference between the first variation degree of the first light intensity signal and the second variation degree of the second light intensity signal, and the value of the first threshold may be adjusted accordingly.
According to the embodiment, whether the human action occurs is judged according to the change of the two light intensity signals obtained by simultaneously detecting the first wave band light and the second wave band light in the indoor environment light, and the detection result is reliable and high in accuracy due to the fact that the judgment is carried out by combining the change of the two light intensity signals; the complex processing is not needed, the response is rapid, and the calculated amount is small; in addition, the active luminous component is not required, so that the cost is low and the installation is convenient; in addition, it is not necessary to obtain privacy-related data such as video images of users, and the security is high.
Example 2
Embodiment 2 of the present invention provides a human motion detection device corresponding to the human motion detection method described in embodiment 1, and specific implementation thereof may refer to implementation of the method described in embodiment 1, and description thereof will not be repeated where the content is the same or relevant.
Fig. 4 is a configuration diagram of a human motion detection device according to embodiment 2 of the present invention, and as shown in fig. 4, a human motion detection device 400 includes:
the detection module 401 detects the first band light and the second band light in the indoor environment light at the same time to obtain a first light intensity signal and a second light intensity signal corresponding to the same time; and
a determining module 402 determines whether a human motion has occurred in the room based on the change in the first light intensity signal and the change in the second light intensity signal.
For example, the detection module 401 includes a first detection module and a second detection module, the first detection module is a first light sensor with a response band of a first band, and the second detection module is a second light sensor with a response band of a second band. That is, the first light sensor outputs a first light intensity signal of the first band light in real time, and the second light sensor outputs a second light intensity signal of the second band light in real time.
For another example, the detection module 401 is a third detection module that detects the first band light and the second band light at the same time, and obtains a first light intensity signal and a second light intensity signal corresponding to the same time.
For example, the third detection module is a third light sensor whose response band includes a first band and a second band, and the third light sensor outputs a first light intensity signal of the first band light and a second light intensity signal of the second band light, respectively, in real time.
In addition, the first light intensity signal and the second light intensity signal corresponding to the same time may be stored in time series.
In an embodiment of the present invention, the first detection module and the second detection module, i.e. the first light sensor and the second light sensor, may be arranged adjacent to each other. Alternatively, as described above, the detection of the first band light and the second band light is performed simultaneously by one third detection module, i.e., a third light sensor.
In the embodiment of the present invention, the detection range for the human motion may be set according to the actual situation. For example, the entire indoor space, or a specific region of the room.
In addition, the number of the first detection modules and the second detection modules, or the number of the third detection modules may be set according to actual needs, that is, the first band light and the second band light within the detection range of the set human motion can be detected.
For example, when the detection range of the set motion of the person is large, the set detection range is covered by providing a plurality of first detection modules and a plurality of second detection modules in the room, or the set detection range is covered by providing a plurality of third detection modules in the room.
In an embodiment of the present invention, the detection module 401 may be disposed at a lower portion and/or bottom of the room. In this way, since natural light or lamplight is generally irradiated from the upper or middle portion of the room, the influence of a person on light can be better detected by the photosensor.
In the embodiment of the present invention, the determining module 402 determines whether a human motion occurs in the room according to the first variation degree of the first light intensity signal and the second variation degree of the second light intensity signal within the predetermined time.
For example, the determination module 402 determines whether a human action has occurred in the room based on the relationship between the first degree of change and the second degree of change.
For example, the determination module 402 determines whether a human action has occurred in the room based on the relationship between the first degree of change and the ratio or difference representing the second degree of change and a first threshold.
For example, when the value of the change in the first light intensity signal and/or the second light intensity signal at the front and rear time is less than the second threshold, the determination module 402 determines that no human action is occurring in the room.
In the embodiment of the present invention, the structure and the function of each module may refer to the specific content of the corresponding step in embodiment 1, which is not described herein.
In an embodiment of the present invention, the function of the determining module 402 may be implemented by means of a processor (e.g., a central processing unit CPU) and a memory, which is coupled to the processor. Wherein the memory can store various data, and further store a program for information processing, and the program is executed under the control of the processor.
According to the embodiment, whether the human action occurs is judged according to the change of the two light intensity signals obtained by simultaneously detecting the first wave band light and the second wave band light in the indoor environment light, and the detection result is reliable and high in accuracy due to the fact that the judgment is carried out by combining the change of the two light intensity signals; the complex processing is not needed, the response is rapid, and the calculated amount is small; in addition, the active luminous component is not required, so that the cost is low and the installation is convenient; in addition, it is not necessary to obtain privacy-related data such as video images of users, and the security is high.
Example 3
Embodiment 3 of the present invention provides an air treatment system including the apparatus for detecting a human motion described in embodiment 2, and the specific implementation thereof may refer to the apparatus described in embodiment 2 and the method described in embodiment 1, and the description thereof will not be repeated.
FIG. 5 is a block diagram of an air treatment system according to embodiment 3 of the present invention, and as shown in FIG. 5, an air treatment system 500 includes:
a detection device 501 for human motion; and
and an air treatment device 502 for performing air treatment based on the detection result of the human motion by the detection means.
In an embodiment of the present invention, the air treatment device 502 may be various air treatment devices including, for example, at least one of an air conditioning device, a fresh air device, and an air cleaning device.
In an embodiment of the present invention, at least one of the air conditioning apparatus, the fresh air apparatus, and the air cleaning apparatus may include a tuyere device provided at a lower portion and/or a bottom portion of the room. The tuyere device may be used for air outlet and/or for air suction.
In the embodiment of the present invention, the specific structure and function of the human motion detection device 501 may refer to the device described in embodiment 2 and the method described in embodiment 1, and the description thereof will not be repeated here.
In the embodiment of the present invention, the detecting device 501 for human motion may be a separate device, or may be disposed in whole or in part in the air processing device 502.
In the embodiment of the present invention, the air treatment device 502 performs air treatment according to the detection result of the motion of the person by the detection device.
For example, when the human motion detection means 501 detects human motion for the first time after being turned on, the air treatment device 502 is turned on accordingly, that is, when a human enters an indoor space, the air treatment device 502 is turned on. Thus, the air treatment equipment can be automatically started at a proper time, and the user experience is improved.
For example, when the detection means 501 of the motion of the person detects the motion of the person, when the preset time is exceeded without detecting the motion of the person, the air treatment device 502 is turned off or the air treatment device 502 is controlled to enter a sleep state, that is, when the preset time is exceeded without detecting the motion of the person, it is indicated that the person may leave the indoor space, or in a rest state, at which time the air treatment device 502 is turned off or the air treatment device 502 is controlled to enter the sleep state. Thus, the electric energy can be effectively saved.
For example, when the detecting means 501 for the motion of the person detects the motion of the person frequently, the air treatment device 502 is controlled to enter a high-power operation state, that is, when the detecting means 501 for the motion of the person detects the motion of the person frequently, it indicates that the activity of the current user is high, and by increasing the operation power of the air treatment device 502, the air treatment effect is improved, so that the user experience can be improved.
According to the embodiment, whether the human action occurs is judged according to the change of the two light intensity signals obtained by simultaneously detecting the first wave band light and the second wave band light in the indoor environment light, and the detection result is reliable and high in accuracy due to the fact that the judgment is carried out by combining the change of the two light intensity signals; the complex processing is not needed, the response is rapid, and the calculated amount is small; in addition, the active luminous component is not required, so that the cost is low and the installation is convenient; in addition, it is not necessary to obtain privacy-related data such as video images of users, and the security is high.
And, air treatment equipment carries out air treatment according to the detection result of the detection device to the action of people, can improve air treatment equipment's operating efficiency to promote user experience.
The device and the method of the embodiment of the invention can be realized by hardware or can be realized by combining hardware with software. The present invention relates to a computer-readable program which, when executed by a logic means, enables the logic means to implement the above means or constituent elements, or enables the logic means to implement the above various methods or steps.
The embodiment of the invention also relates to a storage medium such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory and the like for storing the above program.
While the invention has been described in connection with specific embodiments, it will be apparent to those skilled in the art that the description is intended to be illustrative and not limiting in scope. Various modifications and alterations of this invention will occur to those skilled in the art in light of the spirit and principles of this invention, and such modifications and alterations are also within the scope of this invention.
Claims (20)
1. A method of detecting a human motion, the method comprising:
detecting first band light and second band light in indoor environment light at the same time to obtain a first light intensity signal and a second light intensity signal corresponding to the same time; and
and determining whether human actions occur in the room according to the change of the first light intensity signal and the change of the second light intensity signal.
2. The method of claim 1, wherein said determining whether a human action has occurred in the room based on the change in the first light intensity signal and the change in the second light intensity signal comprises:
and determining whether human actions occur in the room according to the first change degree of the first light intensity signal and the second change degree of the second light intensity signal in the specified time.
3. The method of claim 2, wherein determining whether a human action has occurred in the room based on the first degree of change in the first light intensity signal and the second degree of change in the second light intensity signal over a prescribed time period comprises:
and determining whether human actions occur in the room according to the relation between the first change degree and the second change degree.
4. A method according to claim 3, wherein said determining whether a human action has occurred in said room based on a relationship between said first degree of change and said second degree of change comprises:
determining whether a human action has occurred in the room based on a relationship between a ratio or a difference between the first degree of change and the second degree of change and a first threshold.
5. The method of claim 4, wherein the step of determining the position of the first electrode is performed,
the first band of light comprises a first wavelength that is less than a second wavelength comprised by the second band of light,
said determining whether a human action has occurred in said room based on a relationship between a ratio or a difference between said first degree of variation and said second degree of variation and a first threshold value, comprising:
when the ratio or difference between the first degree of change and the second degree of change is greater than the first threshold, it is determined that a human action has occurred in the room.
6. The method according to claim 4 or 5, characterized in that the method further comprises:
acquiring at least one of weather information, time information and illumination intensity; and
and determining the first threshold according to at least one of the weather information, the time information and the illumination intensity.
7. The method according to claim 1, wherein the method further comprises:
acquiring at least one of time information and illumination intensity; and
and starting the detection method according to at least one of the time information and the illumination intensity.
8. The method of claim 1, wherein said determining whether a human action has occurred in the room based on the change in the first light intensity signal and the change in the second light intensity signal comprises:
and when the change value of the first light intensity signal and/or the second light intensity signal at the front moment and the rear moment is smaller than a second threshold value, determining that no action of a person occurs in the room.
9. The method according to claim 1, wherein the method further comprises:
when the change trend of the first light intensity signal is opposite to the change trend of the second light intensity signal, determining the current first light intensity signal and second light intensity signal as abnormal data; and
and eliminating the abnormal data.
10. The method of claim 1, wherein the step of determining the position of the substrate comprises,
the first band of light includes visible light and the second band of light includes infrared light.
11. The method of claim 10, wherein the step of determining the position of the first electrode is performed,
the first band of light includes red, blue, or green light in visible light.
12. A device for detecting a motion of a person, the device comprising:
the detection module is used for detecting the first wave band light and the second wave band light in indoor environment light at the same time to obtain a first light intensity signal and a second light intensity signal corresponding to the same time; and
and the judging module is used for determining whether the indoor motion of a person occurs according to the change of the first light intensity signal and the change of the second light intensity signal.
13. The apparatus of claim 12, wherein the device comprises a plurality of sensors,
the detection module is arranged at the lower part and/or the bottom of the chamber.
14. The apparatus of claim 12, wherein the device comprises a plurality of sensors,
the judging module determines whether the human action occurs in the room according to the first change degree of the first light intensity signal and the second change degree of the second light intensity signal in the set time.
15. The apparatus of claim 14, wherein the determination module determines whether human activity is occurring in the room based on a relationship between the first degree of change and the second degree of change.
16. The apparatus of claim 15, wherein the determination module determines whether human action is occurring in the room based on a relationship between a ratio or a difference between the first degree of change and the second degree of change and a first threshold.
17. The apparatus of claim 12, wherein the device comprises a plurality of sensors,
when the change value of the first light intensity signal and/or the second light intensity signal at the front moment and the rear moment is smaller than a second threshold value, the judging module determines that no human action occurs in the room.
18. An air treatment system, the system comprising:
the detection device of human actions according to any one of claims 12 to 17; and
and an air treatment device for performing air treatment according to the detection result of the human motion by the detection device.
19. The system of claim 18, wherein the system further comprises a controller configured to,
the air treatment apparatus includes: at least one of an air conditioning device, a fresh air device and an air purifying device.
20. The system of claim 19, wherein the system further comprises a controller configured to control the controller,
at least one of the air conditioning apparatus, the fresh air apparatus, and the air cleaning apparatus includes a tuyere device provided at a lower portion and/or a bottom portion of the room.
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| CN202111220504.0A CN115993661A (en) | 2021-10-20 | 2021-10-20 | Human motion detection method, device and air treatment system |
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| CN202111220504.0A CN115993661A (en) | 2021-10-20 | 2021-10-20 | Human motion detection method, device and air treatment system |
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