Method for controlling lamp by using gestures, lamp, and lighting system

Abstract

A method for controlling a lamp by using gestures, a lamp, and a lighting system. A distance sensor is used to recognize various gestures, so as to control, on the basis of gestures of a user, the ON / OFF, and changes in scenes, color temperature, and brightness of the lamp.

Description

Method for controlling lamps with gestures, lamps, and lighting system

[0001] Cross-references

[0002] This application claims priority to a Chinese patent application filed with the Patent Office of China on September 25, 2023, with application number 202311244202.6 and invention name “Method for gesture-controlled lamps, lamps and lighting systems”. The entire contents of the application are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of lighting technology, and in particular to a gesture control method, a lamp, and a lighting system. Background Art

[0004] With the development of artificial intelligence, gesture recognition, as an emerging human-computer interaction technology, has been applied to more and more fields. Gesture recognition technology can free users from the constraints of physical input devices and bring great convenience to users with its unique advantages of non-contact and what-you-do-is-what-you-get.

[0005] Lighting also incorporates gesture recognition technology. Currently, the sensors commonly used in lighting fixtures are standard infrared presence sensors, which can only detect whether an object is moving. Therefore, the lighting fixture can only recognize a hand gesture and then implement one of the following functions: turning on or off, changing brightness, or switching color temperature. This single function cannot meet the needs. Control solutions that require multiple gesture recognition typically require capturing an image of the user's hand, identifying the gestures in the image, and then determining the interaction command and executing the corresponding operation. This requires the addition of an image sensor to the lighting fixture, and image processing also requires a relatively complex controller, which is costly.

[0006] Summary of the Invention

[0007] The purpose of this application is to solve the above problems and provide a simple, low-cost method for gesture-controlled lighting, a lighting fixture, and a lighting system.

[0008] To achieve the above-mentioned objectives, the technical solution adopted in the present application is to provide a method for controlling a lamp by gesture, which uses a distance sensor to control the working state of the lamp according to at least one of the following control modes: in a first control mode, when the distance sensor detects an object for a time greater than a first predetermined time and less than a second predetermined time, and no longer detects the object within a third predetermined time, the lamp changes its working state; in a second control mode, when the distance sensor detects an object for a time greater than the first predetermined time and less than the second predetermined time, and then detects the object again within a preset interval time, and the time is greater than the first predetermined time and less than the second predetermined time, the lamp changes its working state; in a third control mode, when the distance sensor detects an object for a time greater than a fourth predetermined time and the distance change is less than the first preset distance, the lamp changes its working state; in a fourth control mode, when the distance sensor detects an object for a time greater than the second preset distance within a fifth preset time, the lamp changes its working state.

[0009] The present application also provides a lamp, which is provided with a distance sensor and a controller, and the controller controls the lamp according to the method for controlling the lamp by gesture as described above.

[0010] The present application also provides a lighting system, which includes at least one lamp, a distance sensor, and a controller, and the controller controls the lamp according to the method for controlling the lamp by gesture as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG1 is a schematic structural diagram of a lamp according to an embodiment of the present application;

[0012] FIG2 is a schematic diagram of a first control mode in a method for controlling a lamp using gestures according to an embodiment of the present application;

[0013] FIG3 is a schematic diagram of a second control mode in a method for controlling a lamp using gestures according to an embodiment of the present application;

[0014] FIG4 is a schematic diagram of a third control mode in a method for controlling a lamp using gestures according to an embodiment of the present application;

[0015] FIG. 5 is a schematic diagram of a fourth control mode in a method for controlling a lamp with gestures according to an embodiment of the present application. DETAILED DESCRIPTION

[0016] The method for controlling a lamp by gesture, the lamp, and the lighting system proposed in this application are further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 shows a lamp 1 according to an embodiment of the present application. Lamp 1 is a pendant lamp, and a distance sensor 101 is disposed on its lamp body. In other preferred embodiments, the lamp may also be a ceiling lamp, a wall lamp, a floor lamp, a table lamp, etc., which is not limited in this application. A controller (not shown) is disposed within the lamp body. The controller receives detection signals from distance sensor 101 and controls the lamp based on the received detection signals.

[0018] This embodiment provides four control modes for controlling the lamp 1, each corresponding to a gesture. When the user performs a corresponding gesture, the lamp 1 changes its operating state, which can include on, off, brightness change, color temperature change, or color change. Different gestures change different operating states. Gestures and changed operating states can be flexibly combined. The following briefly describes the gestures corresponding to the four control modes in this embodiment and the functions they achieve.

[0019] The first control mode, shown in Figure 2, uses a waving motion to turn lamp 1 on and off. When waving in front of distance sensor 101, the hand passes in front of distance sensor 101 along a specific trajectory. Distance sensor 101 detects an object within the short period between when the hand enters and leaves its sensing range. A single waving motion lasts for a period of 0.1 to 2 seconds. Simply recording the time it takes for distance sensor 101 to detect the object allows for identification of the waving motion. Therefore, we define a waving motion as one in which the time it takes for distance sensor 101 to detect an object is greater than a first predetermined time and less than a second predetermined time. To avoid misjudgments and ensure a complete waving motion, we also specify that the hand will not detect an object within a third predetermined time, meaning it will not return after waving, to avoid confusion with a lingering motion near an edge. The first predetermined time is 0.1 to 0.2 seconds, or 0.1 in this embodiment; the second predetermined time is 1.5 to 2 seconds, or 2 seconds in this embodiment; and the third predetermined time is 1 to 2 seconds, or 1 second in this embodiment. In this embodiment, when the time when the distance sensor 101 detects an object meets the above setting, the working state of the lamp 1 switches between on and off, and the currently on state becomes off, and the currently off state becomes on.

[0020] The second control mode, shown in Figure 2, detects back-and-forth hand waving. This occurs when a hand passes in front of the distance sensor 101 along a specific trajectory and then passes in front of the distance sensor 101 again in the opposite direction. The method for detecting a single hand wave is similar to the first control mode. When the time between the distance sensor 101 detecting an object is greater than a first predetermined time and less than a second predetermined time, it is counted as a single hand wave. The value ranges for the first and second predetermined times are the same as those for the first control mode. In this embodiment, the specific values ​​are also the same: the first predetermined time is 0.1 seconds, and the second predetermined time is 2 seconds. Subsequently, when the distance sensor 101 detects an object again within a preset interval, and the time is greater than the first predetermined time and less than the second predetermined time, it is counted as a second hand wave. The preset interval ranges from 0.3 to 2 seconds. It is important to note that the preset interval should be less than the third predetermined time; otherwise, the lamp will switch on and off according to the first control mode, failing to recognize the back-and-forth hand wave. In this embodiment, the interval is 0.8 seconds. Upon recognizing a back-and-forth waving gesture, lamp 1 changes its operating state, specifically, its application scenario. To accommodate diverse user needs, lamp 1 includes preset operating scenarios, such as cool white light with high brightness for work, candlelight for leisure, and warm white light with a moderate brightness for meetings. Lamp 1 also offers user-defined scenarios, allowing users to customize their preferences. Upon recognizing a back-and-forth waving gesture, users can switch between these scenarios.

[0021] The third control mode is shown in Figure 4. This control mode recognizes a hovering gesture. When the distance sensor 101 detects an object for a time greater than the fourth predetermined time and the distance change is less than the first predetermined distance, it is considered that the user has made the gesture. The fourth predetermined time ranges from 1.5 to 2.5 seconds, and in this embodiment, it is 2 seconds; the first preset distance ranges from 2 to 4 cm, and in this embodiment, it is 3 cm. When the above conditions are met and it is recognized as a hovering gesture, the lamp 1 changes its color temperature. The change in color temperature is similar to the change in the application scenario. The lamp 1 has several preset color temperatures, which change in sequence.

[0022] The fourth control mode is shown in Figure 5. This control mode identifies the pulling action, that is, the hand is in front of the distance sensor 101, moving away from or approaching the lamp 1. When the distance sensor 101 detects that the change in the distance of the object within the fifth preset time is greater than the second preset distance, the action is confirmed. The fifth preset time value range is 0.4 to 0.8 seconds, and in this embodiment it is 0.5 seconds; the second preset distance value range is 3 to 10 cm, and in this embodiment it is 3 cm. When the above conditions are met, it is recognized as a pulling gesture, and the brightness of the lamp 1 changes. As the hand moves from far to near, the lamp 1 becomes darker, and as the hand moves from near to far, the lamp 1 becomes brighter. Of course, in other embodiments, it can also become brighter from far to near, and darker from near to far.

[0023] In this embodiment, the lamp 1 simultaneously adopts the above four control modes to control the switch, scene, color temperature, and brightness respectively. In other preferred embodiments, only two or three of them can be used for control. Generally speaking, waving is easier to recognize and is a more commonly used gesture. It is more suitable for switch operation, while controlling the brightness through the pulling gesture is more intuitive. In conventional lamps, these two combinations are more suitable. Of course, waving back and forth and hovering actions can also be used to control the switch of the lamp, and this application does not limit this. However, generally speaking, waving back and forth and hovering actions can be used as gestures for mode switching. Regardless of whether the application scene changes or the color temperature changes, one of the two can be used for control. When both need to be controlled at the same time, the gesture and the specific content of the control can be arbitrarily matched.

[0024] For gesture control, although it is contactless, we still require that gesture actions should be completed within a certain range in front of the distance sensor 101. This range is called the effective sensing distance. The effective sensing distance of the distance sensor 101 is not the distance it can actually measure, but the distance we set. Actions outside this range will not be recognized. This can effectively prevent people from walking or other non-control actions from falsely triggering the lamp 1. Only actions that enter the effective sensing distance of the distance sensor 101 will be recognized. The effective sensing distance of the distance sensor 101 is 0 to 50 cm, and in this embodiment it is 20 cm.

[0025] The above embodiment provides a gesture-controlled lamp. Another preferred embodiment may be a lighting system. The lighting system may include multiple lamps, a distance sensor, and a controller. The distance sensor may be located on one of the lamps or on a separate control device external to the lamp. The specific gesture control mode is similar to that used in the lamp and will not be further described here. The controller controls each lamp based on gesture commands transmitted from the distance sensor.

[0026] The above description of the embodiments of the present application is for illustration and description, and is not intended to be exhaustive or limited to the specific forms disclosed. Obviously, many modifications and changes may be made, which may be obvious to those skilled in the art and should be included within the scope of the present application defined by the appended claims.

Claims

1. A method for controlling a lamp by gesture, wherein: The distance sensor is used to control the working state of the lamp according to at least one of the following control modes: In the first control mode, when the distance sensor detects an object for a time greater than a first predetermined time and less than a second predetermined time, and no longer detects an object within a third predetermined time, the lamp changes its working state; In the second control mode, when the distance sensor detects an object for a time greater than the first predetermined time and less than the second predetermined time, and then detects an object again within a preset interval, and the time is greater than the first predetermined time and less than the second predetermined time, the lamp changes its working state; In a third control mode, when the distance sensor detects an object for a time greater than a fourth predetermined time and the distance change is less than the first preset distance, the lamp changes its working state; In the fourth control mode, when the distance sensor detects that the change in the distance of the object within the fifth preset time is greater than the second preset distance, the lamp changes its working state.

2. The method for controlling a lamp by gesture according to claim 1, wherein: The working state of the lamp is one of on, off, brightness change, color temperature change, and color change. When more than two control modes are included at the same time, the working states changed in each control mode are not.

3. The method for controlling a lamp by gesture according to claim 2, wherein: The first preset time is 0.1 to 0.2 seconds, the second preset time is 1.5 to 2 seconds, the third preset time is 1 to 2 seconds, the preset interval time is 0.3 to 2 seconds, the fourth preset time is 1.5 to 2.5 seconds, the fifth preset time is 0.4 to 0.8 seconds, the first preset distance is 2 to 4 cm, and the second preset distance is 3 to 10 cm.

4. The method for controlling a lamp by gesture according to claim 3, wherein: In the first control mode, the lamp changes its working state by switching between on and off; in the second and third control modes, the lamp changes its working state by switching between different scenes or different color temperatures; in the fourth control mode, the lamp changes its working state by adjusting the brightness.

5. The method for controlling a lamp by gesture according to claim 4, wherein: When the distance between the object and the distance sensor changes from far to near, the brightness of the lamp becomes darker, and when the distance between the object and the distance sensor changes from near to far, the brightness of the lamp becomes brighter.

6. The method for controlling a lamp by gesture according to claim 4, wherein: The method for controlling a lamp with gestures includes a first control mode and a fourth control mode.

7. The method for controlling a lamp by gesture according to claim 6, wherein: The method for controlling a lamp with gesture control further includes one of a second control mode and a third control mode, or includes both the second control mode and the third control mode.

8. The method for controlling a lamp by gesture according to any one of claims 1 to 7, wherein: The effective sensing distance of the distance sensor is 0 to 50 cm.

9. A lamp, wherein: The lamp is provided with a distance sensor and a controller, and the controller controls the lamp according to the method for controlling a lamp with gestures as claimed in any one of claims 1 to 8.

10. A lighting system, wherein: The lighting system comprises at least one lamp, a distance sensor, and a controller, and the controller controls the lamp according to the method for controlling a lamp with gestures as claimed in any one of claims 1 to 8.

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