Gesture operation device and working method

Abstract

The present invention relates to a gesture operation device, comprising a light-emitting element, a plurality of photosensitive elements distributed in an L-shape around the periphery of the light-emitting element, and a control circuit board electrically connected to the light-emitting element and each photosensitive element; a non-transparent ring is provided outside each photosensitive element, the distance between the photosensitive elements distributed in the horizontal direction is D, and the distance between the photosensitive elements distributed in the vertical direction is H, where D>H. The present invention also relates to a working method of the gesture operation device. The gesture operation device of the present invention is small in size, low in cost, and easy to operate. Through its working method, it can realize multi-dimensional gesture operation and prevent human interference triggering and false triggering due to other environmental factors.

Description

Technical Field

[0001] The present invention relates to a gesture operation device and also relates to a working method of the gesture operation device. Background Art

[0002] Gesture operation devices are widely used in the home appliance market due to their technological sense, low technical cost and mature technology. Due to cost constraints, the market currently mainly uses contactless gesture control devices with single-dimensional gesture control, while contactless gesture control devices that achieve multi-dimensional gesture detection and control mostly use integrated chip circuits, which are relatively expensive.

[0003] Most contactless gesture control devices currently on the market use a photoelectric design. These devices consist of photosensitive components that detect ambient light and then interpret gestures. Due to the unique characteristics of contactless photoelectric gesture control devices, they are often implemented in kitchen appliances by increasing the circuit board size to minimize human interference. For example, in range hoods, the spacing between the two photosensitive detection components is often increased, limiting head interference. This structural design approach results in larger circuit boards or longer connecting cables, which can introduce interference and increase costs. Furthermore, the large hand-wave range of the user can cause operational difficulties and a poor user experience. Furthermore, photoelectric detection structures using dual-paired tube gesture detection cannot mitigate interference and false triggering caused by water vapor accidentally triggering the photosensitive detection components. For example, water vapor from two operating stoves could reach the detection area, triggering an inadvertent gesture trigger, potentially activating the range hood and causing a false trigger. Summary of the Invention

[0004] The first technical problem to be solved by the present invention is to provide a gesture operation device with small size, low cost, capable of realizing multi-dimensional gesture operation, and capable of preventing human interference triggering and false triggering due to other environmental factors in response to the above-mentioned prior art.

[0005] The second technical problem to be solved by the present invention is to provide a working method of a gesture operation device that is simple and convenient to operate and can accurately identify user operations in response to the above-mentioned prior art.

[0006] The technical solution adopted by the present invention to solve the first problem mentioned above is: a gesture operation device, characterized in that it includes a light-emitting element, a plurality of photosensitive elements distributed in an L shape around the periphery of the light-emitting element, and a control circuit board electrically connected to the light-emitting element and each photosensitive element; a non-transparent ring body is provided outside each photosensitive element.

[0007] In order to enable each photosensitive element to obtain a relatively consistent and stable photosensitive signal, the light-emitting element is arranged at the geometric center of the distribution shape of the multiple photosensitive elements.

[0008] To avoid interference from the user's body, the distance between the horizontally distributed photosensitive elements is D, 80mm≤D≤120mm.

[0009] The distance between the photosensitive elements distributed in the vertical direction is H, 20mm≤H≤80mm.

[0010] The structure is simple and the cost is low, and three photosensitive elements are provided.

[0011] The technical solution adopted by the present invention to solve the second problem is: a working method of the aforementioned gesture operation device, characterized in that it includes the following steps:

[0012] S0, initialize each photosensitive element, label it and store the corresponding position;

[0013] Initialize a first time threshold T1 for effectively triggering two adjacent photosensitive elements arranged in the horizontal direction, and set a second time threshold T2 for effectively triggering two adjacent photosensitive elements arranged in the vertical direction; T1>T2;

[0014] S1, real-time detection of effective trigger signals of each photosensitive element;

[0015] S2, after a photosensitive element is effectively triggered, proceed to S3;

[0016] S3, continue to perform effective trigger detection of each photosensitive element to determine whether other photosensitive elements are effectively triggered within T1; if so, proceed to S4; if not, proceed to S8;

[0017] S4, determining the positional relationship of the currently effectively triggered photosensitive element relative to the previously effectively triggered photosensitive element;

[0018] If the currently effectively triggered photosensitive element is arranged horizontally relative to the previously effectively triggered photosensitive element, proceed to S6;

[0019] If the currently effectively triggered photosensitive element is arranged vertically relative to the previously effectively triggered photosensitive element, proceed to S5;

[0020] S5. Determine the time interval T between the currently effectively triggered photosensitive element and the previously effectively triggered photosensitive element, and determine whether T ≤ T2; if so, proceed to S6; if not, proceed to S8; S6. Determine whether effective trigger signals of all photosensitive elements are obtained; if so, proceed to S7; if not, proceed to S3;

[0021] S7, sorting the labels of the photosensitive elements according to the effective triggering time sequence of the photosensitive elements, and then using the label sequence of the photosensitive elements as gesture information, and performing corresponding gesture control according to the gesture information;

[0022] S8. Determine that the gesture operation is invalid.

[0023] In order to promptly detect interference of the user's body on gesture operations, when the effective trigger time interval T≤T3 of the two photosensitive elements, the two photosensitive elements are judged to be triggered simultaneously, and it is correspondingly judged as user body interference, and then determined as an invalid gesture operation; where T3 is the simultaneous triggering time threshold, T3<T2.

[0024] Simply put, for a photosensitive element with a full-scale light intensity detection range of A, the light intensity threshold for the photosensitive element to be effectively triggered is set to kA. When the light intensity of the photosensitive element is detected to be a i When ≥kA, it is determined that the photosensitive element is effectively triggered, where k is a signal parameter that can avoid environmental interference and effectively detect gesture operations, 0<k<1.

[0025] In order to enrich the number of gesture paths in gesture operations, different first time thresholds T1 and second time thresholds T2 are set for arc paths and straight paths, respectively.

[0026] Compared with the existing technology, the advantages of the present invention are: the gesture operation device of the present invention, through its spatial layout and operating method, can realize multiple, multi-dimensional gesture operations while avoiding physical interference and external environmental interference with gesture operations, and has high gesture recognition accuracy and good anti-interference capabilities. Furthermore, the gesture operation device, through the coordinated operation of the photosensitive element and the light-emitting element, can effectively avoid interference with gesture operations caused by external factors such as smoke in the environment, and avoid interference from the user's body during gesture operations, and has strong anti-interference capabilities. Furthermore, the gesture operation device has a small structure, is easy for users to operate, and is low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of the gesture operation device in an embodiment of the present invention.

[0028] Figure 2 2 is a flowchart of the working process of the gesture operation device in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0030] like Figure 1As shown, the gesture operation device in this embodiment includes a light-emitting element 1, multiple photosensitive elements 2 distributed in an L-shape around the periphery of the light-emitting element 1, and a control circuit board electrically connected to the light-emitting element 1 and each photosensitive element 2. The light-emitting element 1 is turned on or off under the control of the control circuit board, and each photosensitive element 2 can transmit the detected photosensitive data to the control circuit board, which performs calculations and analysis based on the photosensitive data. In this embodiment, the light-emitting element 1 is arranged at the geometric center of the distribution shape of the multiple photosensitive elements 2. This makes the photosensitive data generated by the photosensitive elements 2 under the same environment more similar, making the calculation work simpler.

[0031] Each photosensitive element 2 is surrounded by a non-transparent ring 3, the upper end of which extends to or slightly above the top of the photosensitive element 2. When no object passes through the distribution area of the light-emitting elements 1, the light emitted by the light-emitting elements 1 cannot be sensed by the ring 3 and, therefore, no light-sensing signal is generated. However, when an object passes through the distribution area of the light-emitting elements 1, the light signal generated by the light-emitting elements 1 is reflected by the object to the position of the photosensitive elements 2, where it is sensed and transmitted to the control circuit board for calculation and analysis.

[0032] In this embodiment, the distance between the horizontally distributed photosensitive elements 2 is D, which is set to be greater than the width of an average person's palm but less than the width of the body part opposite the gesture operation device. The distance between the vertically distributed photosensitive elements 2 is H, where D>H, and H is set to be less than the length of an average person's palm. For example, when the gesture operation device is used in a range hood, distance D is correspondingly set to be greater than the width of an average person's palm but less than the width of a head. In this embodiment, 80mm≤D≤120mm, and 20mm≤H≤80mm. The L-shaped arrangement of the photosensitive elements 2 facilitates two-dimensional gesture operation, reducing the device's footprint and making it compatible with various electrical appliances. The gestures are simple, easy to remember, and convenient to operate. Furthermore, during operation, the gesture operation is effectively prevented from interfering with the user's body, demonstrating strong anti-interference capabilities. Furthermore, the distances D and H in this device structure make the device compact, easy to operate, and low-cost.

[0033] Simply put, in this embodiment, there are three photosensitive elements 2 , one of which is arranged at the corner of the L-shape, another photosensitive element 2 is arranged above the photosensitive element 2 , and another photosensitive element 2 is arranged to the right of the photosensitive element 2 .

[0034] The gesture operation device can be applied to various electrical appliances that require gesture operation, and is particularly suitable for kitchen appliances such as range hoods that only require simple gesture operation. The gesture operation device is small in size, low in cost, capable of multi-dimensional gesture operation, and easy to operate.

[0035] like Figure 2 As shown, the working method of the aforementioned gesture operation device includes the following steps:

[0036] S0. Initialize each photosensitive element 2, label it, and store the corresponding position. In this embodiment, the three photosensitive elements can be labeled as G1, G2, and G3 respectively.

[0037] Simultaneously, a first time threshold T1 for effectively triggering two adjacent photosensitive elements 2 arranged horizontally is initialized, and a second time threshold T2 for effectively triggering two adjacent photosensitive elements 2 arranged vertically is set; T1>T2. T1 and T2 can be obtained experimentally, with T1 being the time required for a user with slower hand speed to horizontally pass two photosensitive elements 2 separated by a distance D; and T2 being the time required for a user with slower hand speed to vertically pass two photosensitive elements 2 separated by a distance H. To enrich the user's range of gestures and thereby enable control of more diverse functions of the appliance, either an arcuate path or a straight path can be used between the photosensitive elements 2. In this embodiment, different first and second time thresholds T1 and T2 are set for arcuate and straight paths, respectively. An arcuate path passes through adjacent photosensitive elements 2 in an arc shape, while a straight path passes through adjacent photosensitive elements in a straight line. Typically, the first and second time thresholds T1 and T2 corresponding to an arcuate path are greater than the first and second time thresholds T1 and T2 corresponding to a straight path.

[0038] S1, real-time detection of the effective trigger signal of each photosensitive element 2; for the photosensitive element 2 with a full range of light intensity A, the light intensity threshold of the photosensitive element 2 is set to kA. When the light intensity a of the photosensitive element 2 is detected, i When ≥ kA, light-sensing element 2 is determined to be effectively triggered, where k is a signal parameter that can avoid environmental interference and effectively detect gesture operations, 0<k<1, and in this embodiment, k=2 / 3. By setting the light intensity threshold corresponding to the effective trigger signal, it is possible to effectively avoid the misrecognition of gesture operations due to external interference with weak light reflection ability, such as smoke.

[0039] S2. When the control circuit board determines that a photosensitive element 2 is effectively triggered, that is, it determines that the user's gesture operation has started, then proceed to S3.

[0040] S3. Continue to perform effective trigger detection on each photosensitive element 2 to determine whether other photosensitive elements 2 are effectively triggered within T1, that is, determine whether any photosensitive element 2 is effectively triggered within a time length sufficient for the user gesture operation to trigger the next photosensitive element 2.

[0041] If so, the following determination is made: When the effective triggering time interval T of the two photosensitive elements 2 is less than or equal to T3, the two photosensitive elements 2 are considered to have triggered simultaneously. This means that the large object simultaneously covers the distance range within which both photosensitive elements 2 can be triggered simultaneously. In this case, it is determined that the user's body interfered, and the gesture operation is therefore invalid. T3 is the simultaneous triggering time threshold, and T3 < T2. If T > T3, proceed to S4.

[0042] If no other photosensitive element 2 is effectively triggered within T1, it means that other interference objects may have passed through the device and triggered a photosensitive element 2. In this case, S8 is performed.

[0043] S4, determining the positional relationship of the currently effectively triggered photosensitive element 2 relative to the previously effectively triggered photosensitive element 2;

[0044] If the currently effectively triggered photosensitive element 2 is arranged horizontally relative to the previously effectively triggered photosensitive element 2 , then step S6 is performed.

[0045] If the currently effectively triggered photosensitive element 2 is vertically aligned with the previously effectively triggered photosensitive element 2, proceed to S5. S5: Determine the time interval T between the currently effectively triggered photosensitive element 2 and the previously effectively triggered photosensitive element 2, and determine whether T ≤ T2; if so, that is, a valid trigger signal from a photosensitive element 2 is obtained within the time that a normal user gesture operation can trigger a vertically adjacent photosensitive element 2, proceed to S6; if not, proceed to S8.

[0046] S6: Determine whether valid trigger signals of all photosensitive elements 2 are obtained. If yes, proceed to S7; if not, proceed to S3.

[0047] S7 . Sort the labels of the photosensitive elements 2 according to the effective triggering time sequence of the photosensitive elements 2 , and then use the sequence of the labels of the photosensitive elements 2 as gesture information, and perform corresponding gesture control according to the gesture information.

[0048] S8. Determine that the gesture operation is invalid.

[0049] For the photosensitive elements labeled G1, G2, and G3 in this embodiment, the above-mentioned method can effectively identify the clockwise circular operation gesture, counterclockwise circular operation gesture, G1-G2-G3 clockwise arc operation gesture, G1-G3-G2 counterclockwise arc operation gesture, G3-G2-G1 counterclockwise arc operation gesture, G3-G1-G2 clockwise arc operation gesture, G1-G2-G3 L-shaped straight line operation gesture, and G3-G2-G1 L-shaped straight line operation gesture, and then perform control operations corresponding to the gestures.

[0050] The gesture manipulation device of the present invention, through its spatial layout and operating method, can implement diverse and multi-dimensional gesture manipulation while avoiding physical interference and external environmental interference with gesture manipulation. It has high gesture recognition accuracy and excellent anti-interference capabilities. Furthermore, through the coordinated operation of the photosensitive and luminous elements, the gesture manipulation device effectively prevents interference from external factors such as ambient smoke and avoids interference from the user's body during gesture manipulation, demonstrating strong anti-interference capabilities. Furthermore, the gesture manipulation device is compact, easy to operate, and low-cost.

Claims

1. A method for operating a gesture operation device, characterized in that: The gesture operation device comprises a light emitting element (1), a plurality of light sensing elements (2) distributed in an L-shape on the periphery of the light emitting element (1), and a control circuit board connected to the light emitting element (1) and each light sensing element (2) by electrical signals; Each photosensitive element (2) is provided with a non-light-transmissive ring body (3); The working method of the gesture operation device includes the following steps S0, initializing each photosensitive element (2), labeling it and storing the corresponding position; Initializing a first time threshold T1 for effectively triggering two adjacent photosensitive elements (2) arranged in a horizontal direction, and setting a second time threshold T2 for effectively triggering two adjacent photosensitive elements (2) arranged in a vertical direction; T1>T2; S1, detecting effective trigger signals of each photosensitive element (2) in real time; S2, after a photosensitive element (2) is effectively triggered, proceed to S3; S3, continue to perform effective trigger detection of each photosensitive element (2), and determine whether there are other photosensitive elements (2) that are effectively triggered within T1; if so, proceed to S4; if not, proceed to S8; S4, determining the positional relationship between the currently effectively triggered photosensitive element (2) and the previously effectively triggered photosensitive element (2); If the currently effectively triggered photosensitive element (2) is arranged horizontally relative to the previously effectively triggered photosensitive element (2), proceed to S6; If the currently effectively triggered photosensitive element (2) is vertically arranged relative to the previously effectively triggered photosensitive element (2), proceed to S5; S5, determining the time interval T between the currently effectively triggered photosensitive element (2) and the previously effectively triggered photosensitive element (2), and determining whether T≤T2; if so, proceeding to S6; if not, proceeding to S8; S6, judging whether valid trigger signals of all photosensitive elements (2) are obtained, if yes, proceeding to S7; if not, proceeding to S3; S7, sorting the labels of the photosensitive elements (2) according to the effective triggering time sequence of the photosensitive elements (2), and then using the label sequence of the photosensitive elements (2) as gesture information, and performing corresponding gesture control according to the gesture information; S8. Determine that the gesture operation is invalid.

2. The operating method of the gesture operation device according to claim 1, characterized in that: The light-emitting element (1) is arranged at the geometric center of the distribution shape of the plurality of light-sensing elements (2).

3. The operating method of the gesture operation device according to claim 1, characterized in that: The distance between the photosensitive elements (2) distributed in the horizontal direction is D, 80mm≤D≤120mm.

4. The operating method of the gesture operation device according to claim 1, characterized in that: The distance between the photosensitive elements (2) distributed in the vertical direction is H, 20mm≤H≤80mm.

5. The operating method of the gesture operation device according to claim 1, characterized in that: Three photosensitive elements (2) are provided.

6. The operating method of the gesture operation device according to claim 1, characterized in that: When the effective triggering time interval T of the two photosensitive elements (2) is less than or equal to T3, the two photosensitive elements (2) are judged to be triggered simultaneously, which is correspondingly judged as user body interference and further determined to be an invalid gesture operation; wherein T3 is the simultaneous triggering time threshold, and T3<T2.

7. The operating method of the gesture operation device according to any one of claims 1 to 6, characterized in that: For a photosensitive element (2) with a full range of light intensity detection of A, the light intensity threshold value for effective triggering of the photosensitive element (2) is set to kA. When the light intensity of the photosensitive element (2) is detected to be a i When ≥kA, it is determined that the photosensitive element (2) is effectively triggered, wherein k is a signal parameter that can avoid environmental interference and effectively detect gesture operations, and 0<k<1.

8. The operating method of the gesture operation device according to any one of claims 1 to 6, characterized in that: Different first time thresholds T1 and second time thresholds T2 are set for the arc path and the straight path, respectively.

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