CN113438780A - Brightness adjusting method, brightness adjusting device and storage medium - Google Patents
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- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/115—Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings
- H05B47/125—Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings by using cameras
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
The invention discloses a brightness adjusting method, a brightness adjusting device and a storage medium, wherein the brightness adjusting method comprises the following steps: periodically acquiring image data of at least one visual area; judging whether the image data contains information of an object to be detected which meets a preset threshold value or not according to the acquired image data; when the image data is judged not to contain the information of the object to be detected which accords with the preset threshold value, determining the state of the object to be detected, wherein the state of the object to be detected comprises at least one of the number of the object to be detected and the distance value of the object to be detected; judging whether the state of the object to be detected in the front frame image data and the back frame image data changes or not; and when judging whether the state of the object to be detected in the two frames of image data changes, generating a corresponding control signal and sending the control signal to the lighting device. The invention not only can adjust the brightness of the illumination device according to the change of the target object in the visible area, but also can accurately obtain the position and the number of the target object.
Description
Technical Field
The invention relates to the field of smart home, in particular to a brightness adjusting method, a brightness adjusting device and a storage medium.
Background
Intelligent lighting is increasingly emphasized by various manufacturers in the field of lighting fixtures, and an important problem is how to realize intelligent control on lighting fixtures. In the prior art, by using various sensors, whether a user exists in a sensor visual area is detected, and the corresponding lighting lamp is controlled to be turned on or off. However, when an object (e.g., a person) is in a static state in the sensor visible area, part of the sensors may assume that the object has left the visible area, thereby causing erroneous judgment of the object. One solution is to delay the lighting device, so that the sensor still keeps on the lighting device for a certain time when the sensor cannot detect the target object, which not only wastes electric energy, but also affects user experience.
Disclosure of Invention
The invention aims to provide a brightness adjusting method, a brightness adjusting device and a storage medium, which can solve the problem that the lighting device is turned off by mistake when the target is in a static state by detecting the image data (such as the distance difference between the head and the shoulders of a person) of the target (such as a person) to accurately calculate the position and the number of the target.
In order to achieve the above object, the present invention provides a brightness adjustment method, including: periodically acquiring image data of at least one visual area; judging whether the image data contains information of an object to be detected which meets a preset threshold value or not according to the acquired image data; when the image data is judged not to contain the information of the object to be detected which accords with the preset threshold value, determining the state of the object to be detected, wherein the state of the object to be detected comprises at least one of the number of the object to be detected and the distance value of the object to be detected; judging whether the state of the object to be detected in the front frame image data and the back frame image data changes or not; and when judging whether the state of the object to be detected in the two frames of image data changes, generating a corresponding control signal and sending the control signal to the lighting device.
Further, the step of determining whether the image data contains information of an object to be measured which meets a preset threshold value according to the acquired image data includes the following steps: acquiring information of pixel points in the image data; judging whether the difference of the distance value between one pixel point and two adjacent pixel points accords with a preset value or not according to the information of the pixel points; if so, determining that the image data contains information of the object to be detected which meets a preset threshold value; if not, determining that the image data does not contain the information of the object to be detected which meets a preset threshold value.
Further, after the step of determining whether the image data includes information of an object to be measured that meets a preset threshold according to the acquired image data, the method further includes: and generating a corresponding control signal to turn off the lighting device when the image data is judged not to contain the information of the object to be detected which meets the preset threshold value.
Further, the image data includes: a set of distance values corresponding to each of the pixel points.
Further, the present invention provides a brightness adjusting device for adjusting the brightness of at least one lighting device, the brightness adjusting device comprising: the distance sensing device is used for periodically acquiring image data of at least one visual area; the control device is connected with the distance sensing device; the control device includes: the first judgment module is used for judging whether the image data contains information of an object to be detected which accords with a preset threshold value; the second judgment module is used for judging whether the state of the object to be detected in the two frames of image data changes or not; and the control signal output module is used for generating a corresponding control signal when the state of the object to be detected in the two frames of image data before and after the change is judged.
Further, the control device further includes: and the closing signal output module is used for generating a corresponding control signal to close the lighting device when the image data is judged not to contain the information of the object to be detected which accords with the preset threshold value.
Further, the distance sensing device comprises a plurality of sensors, and the offset angle of each sensor is determined according to the visual angle range of the sensor.
Further, the offset angle is half of a viewing angle of the sensor.
Further, the sensor is one of a TOF sensor, an ultrasonic sensor, a laser sensor and a structured light sensor.
Further, the distance sensing device further comprises a communication module, and the communication module is used for transmitting the acquired image data to the control device.
The present invention also provides a storage medium for storing codes, and at least one processor executes an executable computer program corresponding to the codes by reading the codes to perform at least one step of the brightness adjustment method according to any embodiment of the present invention.
The brightness adjusting method in the embodiment of the invention increases the detection range of each sensor by arranging the sensors in an offset manner, and judges the positions and the number of the target objects (such as the positions of people and the number of people) in the visible area through the distance value obtained by each sensor. Furthermore, the method can accurately detect whether a person exists in the visible area by measuring the distance difference between the head and the shoulder of the person, and the lighting device cannot be turned off after the person is in a static state for a certain time. The same is true for the brightness adjusting device in the embodiment of the present invention.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a brightness adjustment method according to an embodiment of the present invention.
Fig. 2 is a structural diagram of a brightness adjusting apparatus according to an embodiment of the present invention.
Fig. 3 is a block diagram of a control device in the brightness adjusting device according to the embodiment of the present invention.
Fig. 4 is a usage state diagram of a distance sensing device according to an embodiment of the present invention.
Fig. 5 is a usage state diagram of the brightness adjusting apparatus according to an embodiment of the present invention.
FIG. 6 is a diagram illustrating image data of an object in a brightness adjusting apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 2, an embodiment of the present invention provides a brightness adjusting device, which is used for adjusting the brightness of at least one lighting device, and includes a distance sensing device 110, configured to periodically acquire image data of at least one visible area; and a control device 120 connected to the distance sensing device 110. The lighting device is connected to the control device 120 for receiving corresponding control signals, and the brightness can be further adjusted.
In this embodiment, the distance sensing device 110 may include a communication module 130 for transmitting the acquired image data to the control device 120. The communication module 130 may be a bluetooth communication module, a WIFI communication module, or a wired communication module.
As shown in fig. 3, the control device 120 may include a processor CPU, and may further include the following modules.
The control device 120 may include: a first determining module 121, configured to determine whether the image data includes information of an object to be detected that meets a preset threshold; the second judging module 122 is configured to judge whether a state of an object to be detected in two frames of image data before and after changes; the control signal output module 123 is configured to generate a corresponding control signal when it is determined that the state of the object to be detected in the two frames of image data before and after the change; and a turn-off signal output module 124, configured to generate corresponding control information (e.g., a turn-off signal) to turn off the lighting device when it is determined that the image data does not include the information of the object to be measured meeting the preset threshold.
Illustratively, the object state includes at least one of the number of objects to be measured and a distance value from the object to be measured to the distance sensor. When the control signal output module 123 determines that the number of pieces of information of the object to be measured that meet the preset threshold becomes large, the first control signal is generated to increase the brightness of the lighting device, for example, when the control signal output module 123 determines that the number of pieces of information of the object to be measured that meet the preset threshold increases, for example, the object to be measured is a person, that is, when it is determined that the number of persons in the visible area increases, the control signal output module 123 generates the first control signal, and the first control signal instructs the lighting device to adjust the brightness. It should be noted that the increase, decrease or maintenance of the illumination device brightness after receiving the first control signal is determined according to the internal program of the control device 120. For example, the initial number of pieces of information of the object to be measured that meet the preset threshold is zero, and then, when the number of pieces of information of the object to be measured that meet the preset threshold increases, the first control signal may instruct the brightness adjustment device to turn on the illumination device.
The lighting device may be formed by combining two or more brightness adjusting devices, the interior of the lighting device is also divided into different lighting areas, and the different lighting areas correspond to different control signal output modules 123. When the different control signal output modules 123 determine that the number of pieces of information of the object to be measured that meet the preset threshold in the corresponding illumination area increases, for example, the object to be measured is a person, that is, it is determined that the number of persons in the visible area increases, the control signal output module 123 generates a first control signal, the first control signal indicates the corresponding illumination device to adjust the brightness, exemplarily, the initial number of pieces of information of the object to be measured that meet the preset threshold is zero, and then, when the number of pieces of information of the object to be measured that meet the preset threshold increases, the first control signal indicates the brightness adjustment device to turn on the corresponding illumination device.
In addition, when the control signal output module 123 determines that the number of pieces of information of the object to be measured that meet the preset threshold value becomes smaller, the second control signal is generated to adjust the brightness of the lighting apparatus, for example, when the control signal output module 123 determines that the number of pieces of information of the object to be measured that meet the preset threshold value is smaller, for example, when the object to be measured is a person, that is, it is determined that the number of people in the visible area is smaller, the control signal output module 123 generates the second control signal, and the second control signal instructs the lighting apparatus to adjust the brightness. It should be noted that the increase, decrease or maintenance of the illumination device brightness after receiving the second control signal is determined according to the internal program of the control device 120. For example, when the value of the object information to be measured meeting the preset threshold is reduced to zero, the second control signal instructs the brightness adjusting device to turn off the lighting device.
The lighting device may be formed by combining two or more brightness adjusting devices, the interior of the lighting device is also divided into different lighting areas, the different lighting areas correspond to different control signal output modules 123, when the different control signal output modules 123 determine that the number of pieces of information of the object to be measured, which meet a preset threshold value, in the corresponding lighting area is reduced, that is, when it is determined that the number of people in the visible area is reduced, the control signal output module 123 generates a second control signal, and the second control signal indicates the corresponding lighting device to adjust the brightness. For example, when the value of the object information to be measured meeting the preset threshold is reduced to zero, the second control signal instructs the brightness adjusting device to turn off the corresponding lighting device.
Illustratively, the control signal output module 123 is further configured to generate a third control signal to adjust the brightness of the lighting device when it is determined that the sum of the distance values in the information of the object to be measured that meets the preset threshold becomes smaller, for example, when it is determined that the sum of the distance values in the information of the object to be measured that meets the preset threshold becomes smaller, that is, it is determined that the distance between the human body and the lighting device in the visible area decreases, the user approaches the lighting device, and the control signal output module 123 generates the third control signal, where the third control signal instructs the brightness adjustment device to adjust the brightness of the lighting device. It should be noted that the increase, decrease or the constant of the illumination device brightness after receiving the third control signal is determined according to the internal program of the control device 120.
When the control signal output module 123 determines that the sum of the distance values in the information of the object to be measured which meets the preset threshold becomes large, a fourth control signal is generated to adjust the brightness of the lighting device, for example, when the control signal output module 123 determines that the sum of the distance values in the information of the object to be measured which meets the preset threshold becomes large, that is, when it is determined that the distance between the human body and the lighting device in the visible area increases, the user is far away from the lighting device, the control signal output module 123 generates the fourth control signal, and the fourth control signal instructs the brightness adjustment device to adjust the brightness of the lighting device. It should be noted that the increase, decrease or maintenance of the brightness of the lighting device after receiving the fourth control signal is determined according to the internal program of the control device 120.
The lighting device is preferably an LED lamp, but is not limited thereto, and may be a fluorescent lamp or the like in other embodiments.
As shown in fig. 1 to 3, the distance sensing device 110 includes at least one sensor, which may be a TOF sensor, but may also be an ultrasonic sensor, a laser sensor, or a structured light sensor.
Further, as shown in fig. 4, the offset angle b of each sensor is determined according to the range of the visible angle a. Specifically, the offset angle b of the sensor is half of the visual angle a of the sensor, and the aim of expanding the detection range of the sensor is achieved by adjusting the installation angle of the sensor, so that the brightness adjusting device disclosed by the invention has higher practicability.
As shown in fig. 5, in order to ensure that the distance sensing device 110 has accurate detection results of the presence or absence of the user 1, it is necessary to ensure consistency of the detection range. The visible areas of the sensors may overlap, and the overlapping degree between the visible areas S1, S2, S3 and S4 is determined according to the placement positions of the sensors, which follow two principles: the first is that the visible range has continuity, and the second is that the illumination range corresponding to the lighting device in which the sensor is located is matched, so in this embodiment, four TOF sensors can be used. A plurality of sensors may be provided on one lighting device. Multiple sensors may also be provided on multiple lighting devices. If a plurality of sensors can be disposed on a plurality of lighting apparatuses, the control device 120 can correspondingly control different lighting apparatuses according to the image data collected by each sensor. In addition, the plurality of sensors and the plurality of lighting devices may implement a preset logic control relationship through the control device 120, such as: the control device can detect whether a person exists in one visual area through the sensor corresponding to the visual area, and can generate a control signal to the lighting device corresponding to the other visual area so as to adjust the brightness of the lighting device, thereby realizing the centralized control of the lighting in a larger visual area (comprising a plurality of smaller visual areas).
The brightness adjusting device provided by the embodiment of the invention increases the detection range of each sensor by arranging the sensors in an offset manner, and judges the positions and the number of the target objects (such as the positions of people and the number of people) in the visible area by the distance value obtained by each sensor. Furthermore, the method can accurately detect whether a person exists in the visible area by measuring the distance difference between the head and the shoulder of the person, and the lighting device can not be turned off after the person is in a static state for a certain time.
As shown in fig. 1, based on the brightness adjusting apparatus, the present invention further provides a brightness adjusting method, which includes steps S101 to S105.
Step S101, the distance sensing device periodically collects image data of at least one visual area.
And S102, judging whether the image data contains information of the object to be detected which accords with a preset threshold value or not by the control device according to the acquired image data.
As shown in fig. 6, specifically, it may be determined by the control device whether the image data 1211 contains information of the object-to-be-measured information that meets a preset threshold. The preset threshold is a preset difference range between any one pixel and an adjacent pixel in the image data 1211, where the difference range is determined according to a distance from a head to a shoulder of a person, the image data 1211 includes a set of distance values corresponding to each pixel, where the image data is a dot matrix image composed of p (1) -p (16), and the image data 1211 includes each distance value obtained by the distance sensing device 110 and also includes a p-point coordinate corresponding to each distance value, i.e., a position of the pixel.
Further, the distance between each pixel point and the target object (e.g., a human body) can be measured by the distance sensing device 110. For example: when a person walks into the visual area of the distance sensing device 110, the distance value between the shoulder and the sensor is different from the distance value between the head and the sensor, and these distance values show a relationship. In other words, the difference between the pixel points corresponding to the two shoulders and the pixel point corresponding to the head is approximately the same, and the difference is about the vertical distance between the head and the shoulders of the standard adult, and the distance value exhibits a certain boundary characteristic, for example, as shown in fig. 6, the distance value obtained at p10 has a specific difference relationship with p9 and p11, the specific difference is the distance value between the average human head and the shoulders, and the distance value of p10 is smaller than the distance values of p11 and p9, so that the control device 120 can confirm that the target object exists in the visible range. In other embodiments, the control device 120 may analyze two image data acquired continuously to calculate the direction of the movement of the target 1.
Step S103, when the control device judges that the image data contains the information of the object to be measured which accords with the preset threshold value, the state of the object to be measured is determined. When the control device 120 determines that the image data does not include the information of the object to be measured meeting the preset threshold, a corresponding control signal is generated to turn off the lighting device. The information of the object to be measured conforming to the preset threshold is the pixel point position occupied by the area where the target object (i.e. the user) is located, which is determined by the control device 120, wherein the state of the object to be measured includes at least one of the number of the object to be measured and the distance value of the object to be measured.
And step S104, the control device judges whether the state of the object to be detected in the two frames of image data changes or not. This step is to ensure that the control device 120 does not send a turn-off command to the illumination device when the target is in a stationary state.
And step S105, when the control device judges that the state of the object to be measured in the two frames of image data is changed, generating a corresponding control signal to adjust the brightness of the lighting device.
Wherein, the increase, decrease or keeping of the brightness of the lighting device after receiving the control signal is determined according to the internal program of the control device 120.
The brightness adjusting method in the embodiment of the invention increases the detection range of each sensor by arranging the sensors in an offset manner, and judges the positions and the number of the target objects (such as the positions of people and the number of people) in the visible area through the distance value obtained by each sensor. Furthermore, the method can accurately detect whether a person exists in the visible area by measuring the distance difference between the head and the shoulder of the person, and the lighting device can not be turned off after the person is in a static state for a certain time.
Based on the brightness adjustment method, an embodiment of the present invention further provides a storage medium for storing codes, and at least one processor runs an executable computer program corresponding to the codes by reading the codes to perform at least one step of the brightness adjustment method according to any one of the embodiments of the present invention.
The computer program when executed by a processor implementing the steps of:
periodically acquiring image data of at least one visual area;
judging whether the image data contains information of an object to be detected which meets a preset threshold value or not according to the acquired image data;
when the image data is judged not to contain the information of the object to be detected which accords with the preset threshold value, determining the state of the object to be detected, wherein the state of the object to be detected comprises at least one of the number of the object to be detected and the distance value of the object to be detected; and
judging whether the state of the object to be detected in the front frame image data and the back frame image data changes or not;
and when judging whether the state of the object to be detected in the two frames of image data changes, generating a corresponding control signal and sending the control signal to the lighting device.
The brightness adjusting method, the brightness adjusting device and the storage medium provided by the embodiments of the present invention are described in detail above, and the principle and the implementation of the present invention are explained in this document by applying specific examples, and the description of the above embodiments is only used to help understanding the technical scheme and the core idea of the present invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. A brightness adjustment method, comprising:
periodically acquiring image data of at least one visual area;
judging whether the image data contains information of an object to be detected which meets a preset threshold value or not according to the acquired image data;
when the image data is judged to contain information of the objects to be detected which accord with a preset threshold value, determining the state of the objects to be detected, wherein the state of the objects to be detected comprises at least one of the number of the objects to be detected and the distance value of the objects to be detected; and
judging whether the state of the object to be detected in the front frame image data and the back frame image data changes or not; and
and when judging whether the state of the object to be detected in the two frames of image data changes, generating a corresponding control signal and sending the control signal to the lighting device.
2. The brightness adjusting method according to claim 1, wherein the step of determining whether the image data contains information of an object to be measured that meets a preset threshold value according to the collected image data includes the steps of:
acquiring information of pixel points in the image data;
judging whether the difference of the distance value between one pixel point and two adjacent pixel points accords with a preset value or not according to the information of the pixel points;
if so, determining that the image data contains information of the object to be detected which meets a preset threshold value;
if not, determining that the image data does not contain the information of the object to be detected which meets a preset threshold value.
3. The brightness adjusting method according to claim 1, wherein after the step of determining whether the image data includes information of an object to be measured that meets a preset threshold value according to the acquired image data, the method further comprises:
and generating a corresponding control signal to turn off the lighting device when the image data is judged not to contain the information of the object to be detected which meets the preset threshold value.
4. The luminance adjustment method according to claim 2, wherein the image data includes: a set of distance values corresponding to each of the pixel points.
5. A brightness adjustment device for adjusting the brightness of at least one lighting device, comprising:
the distance sensing device is used for periodically acquiring image data of at least one visual area;
the control device is connected with the distance sensing device; the control device includes: the first judgment module is used for judging whether the image data contains information of an object to be detected which accords with a preset threshold value; the second judgment module is used for judging whether the state of the object to be detected in the two frames of image data changes or not; and the control signal output module is used for generating a corresponding control signal when the state of the object to be detected in the two frames of image data before and after the change is judged.
6. The luminance adjustment device as claimed in claim 5, wherein the control device further comprises: and the closing signal output module is used for generating a corresponding control signal to close the lighting device when the image data is judged not to contain the information of the object to be detected which meets a preset threshold value.
7. The luminance adjusting apparatus as claimed in claim 5, wherein the distance sensing means comprises a plurality of sensors, and the offset angle of each of the sensors is determined according to the visual angle range thereof.
8. The luminance adjustment device as claimed in claim 7, wherein the offset angle is half of a visible angle of the sensor.
9. The apparatus of claim 7, wherein the sensor is one of a TOF sensor, an ultrasonic sensor, a laser sensor, and a structured light sensor.
10. The brightness adjustment device according to claim 7, wherein the distance sensing device further comprises a communication module for transmitting the acquired image data to the control device.
11. A storage medium storing code, wherein at least one processor executes an executable computer program corresponding to the code by reading the code to perform at least one step of the brightness adjustment method according to any one of claims 1 to 4.
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| CN117500120A (en) * | 2023-12-29 | 2024-02-02 | 深圳市正远科技有限公司 | Induction type LED illumination method and system and intelligent warehouse |
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