Alarm clock capable of directionally transmitting sound

Abstract

The invention relates to the field of alarm clocks, and particularly discloses an alarm clock capable of directionally transmitting sound. The alarm clock capable of directionally transmitting sound is formed by arranging the mounting shell, the controller, the loudspeaker array, the scanning and positioning assembly and the direction adjusting support, a user can position the position of the mounting shell relative to the user through the scanning and positioning assembly, and the controller memorizes the position; and when the time is close to the set alarm time of the user in the direction, the controller controls the loudspeaker array on the mounting shell to emit directional sound waves towards the direction of the user to prompt the user, so that the user in the corresponding direction is accurately prompted while noise pollution is effectively avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of alarm clocks, and in particular relates to an alarm clock capable of directionally propagating sound. Background Art

[0002] An alarm clock is a common device in daily life. Users can set the alarm time on the alarm clock. When the alarm time is reached, the alarm clock's sounding mechanism will make a sound to remind the user. The traditional sounding mechanism of the alarm clock is mainly a mechanical pendulum and a speaker. The sound of the mechanical pendulum will spread around and affect others. Although the propagation direction of the speaker is smaller than the sound propagation range of the mechanical pendulum, the propagation angle of the sound is still large, and it will still cause noise pollution within a large angle range in one direction.

[0003] With the development and maturity of acoustic positioning technology, this technology can be applied to the sounder of an alarm clock, so that the alarm clock can emit directional sound waves in one direction, avoiding noise pollution while achieving accurate wake-up of the user. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention aims to provide an alarm clock that can propagate sound in a directionally-directed manner, so as to solve the problem that traditional alarm clocks have a wide sound range and may produce noise that affects others.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An alarm clock capable of directional sound transmission, comprising:

[0007] An installation shell with a controller connected inside;

[0008] a speaker array, connected to the mounting housing, for emitting sound waves outward according to instructions from the controller;

[0009] A scanning and positioning assembly, connected to the mounting shell for scanning and positioning a user, comprising a positioning scanner connected to the mounting shell and a sighting star connected to the positioning scanner, wherein the positioning scanner comprises a laser TOF ranging module and a gyroscope module;

[0010] The direction adjustment bracket is connected to the mounting shell and is used to adjust the orientation of the mounting shell.

[0011] Preferably, the speaker array and the positioning scanner are both electrically connected to the controller, and the controller is configured to:

[0012] The speaker array is controlled to emit directional sound waves in a direction angle range set by the user.

[0013] Preferably, the controller has a built-in beamforming algorithm for controlling the speaker array to emit sound waves within a set angle range.

[0014] Preferably, the beamforming algorithm operates as follows:

[0015] Calculate the relative delay between the speaker elements of the speaker array and express the position of the nth speaker element as The time delay of the loudspeaker array element relative to the center of the loudspeaker array is:

[0016] Design the fractional delay filter, the formula is expressed as: Where L is the filter order and w(k) is the window function;

[0017] A variable window function is used to suppress the side lobes, and the weight coefficient Wn is defined as: Used to update weights based on real-time angles, where Taylro is used to customize the sidelobe level (SLL) and mainlobe width;

[0018] The input signal S(t) of each speaker is passed through the corresponding h delay (k), we get: Sn(t)=S(t)*h delay (k), and after amplitude weighting, we get S′n(t)=Wn·Sn(t), and then superimpose the output to get

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention comprises an alarm clock that propagates sound in a directionally-oriented manner by providing an installation shell, a controller, a speaker array, a scanning and positioning component, and a direction-adjusting bracket. A user can locate the user's position relative to the installation shell through the scanning and positioning component, and the controller memorizes the position. When the time approaches the set alarm time of the user in that position, the controller controls the speaker array on the installation shell to emit directional sound waves toward the user's position to remind the user, thereby effectively avoiding noise pollution and accurately reminding the user in the corresponding position. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0022] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the direction-adjusting bracket of the present invention;

[0024] Figure 4This is a schematic diagram of the cross-sectional structure of the installation shell of the present invention;

[0025] In the figure: 1. Base; 2. Rotating drum; 3. Internal tooth groove; 4. First motor; 5. Gear; 6. Rotating plate; 7. Second motor; 8. Mounting shell; 9. Speaker array; 10. Positioning scanner; 11. Aiming star; 12. Controller. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1:

[0028] See also Figure 1 - Figure 4 As shown, an alarm clock for directional sound propagation, comprising:

[0029] The mounting housing 8 has a controller 12 connected thereto;

[0030] a speaker array 9 connected to the mounting housing 8 and configured to emit sound waves according to instructions from the controller 12;

[0031] A scanning and positioning component, connected to the mounting shell 8 for scanning and positioning a user, comprising a positioning scanner 10 connected to the mounting shell 8 and a sighting star 11 connected to the positioning scanner 10, wherein the positioning scanner 10 is composed of a laser TOF ranging module and a gyroscope module;

[0032] The direction adjustment bracket is connected to the mounting shell 8 and is used to adjust the orientation of the mounting shell 8 .

[0033] As can be seen from the above, by setting up an installation shell 8, a controller 12, a speaker array 9, a scanning positioning component and a direction adjustment bracket to form an alarm clock that transmits sound in a direction, the user can locate the user's position relative to the installation shell through the scanning positioning component, and the controller 12 memorizes the position. When the time is close to the set alarm time of the user in that position, the controller 12 controls the speaker array 9 on the installation shell to emit directional sound waves toward the user's position to remind the user, while effectively avoiding noise pollution. At the same time, it accurately reminds the user in the corresponding position.

[0034] The speaker array 9 and the positioning scanner 10 are both electrically connected to the controller 12, and the controller 12 is configured to:

[0035] The direction of the speaker array 9 after the direction adjustment bracket is rotated and adjusted is recorded. At this time, the controller 12 records the parameters of the laser TOF ranging module and the gyroscope module as the user positioning data in this direction. The user can judge the direction of the speaker array 9 by the aiming star 11. When the user rotates the adjustment bracket, the controller 12 will correspondingly record the parameters of the laser TOF ranging module and the gyroscope module as the positioning data of the center line of the directional sound wave sent by the speaker array 9;

[0036] The speaker array 9 is controlled to emit directional sound waves in the direction angle range set by the user. Through the superposition of the sound wave phase, the direction of the sound wave is accurately controlled, effectively avoiding the diffusion of the sound wave and the generation of noise.

[0037] The controller 4 has a built-in beamforming algorithm for controlling the speaker array 9 to emit sound waves within a set angle range.

[0038] The beamforming algorithm operates as follows:

[0039] Calculate the relative delay between the speaker array elements of the speaker array 9 and express the position of the nth speaker array element as The time delay of the loudspeaker element relative to the center of the loudspeaker array 9 is:

[0040] Design the fractional delay filter, the formula is expressed as: Where L is the filter order and w(k) is the window function;

[0041] A variable window function is used to suppress the side lobes, and the weight coefficient Wn is defined as: Used to update weights based on real-time angles, where Taylro is used to customize the sidelobe level (SLL) and mainlobe width;

[0042] The input signal S(t) of each speaker is passed through the corresponding h delay (k), we get: Sn(t)=S(t)*h delay (k), and after amplitude weighting, we get S′n(t)=Wn·Sn(t), and then superimpose the output to get

[0043] Example 2:

[0044] See also Figure 1 - Figure 4 As shown, an alarm clock for directional sound propagation, comprising:

[0045] The mounting housing 8 has a controller 12 connected thereto;

[0046] a speaker array 9 connected to the mounting housing 8 and configured to emit sound waves according to instructions from the controller 12;

[0047] A scanning and positioning component, connected to the mounting shell 8 for scanning and positioning a user, comprising a positioning scanner 10 connected to the mounting shell 8 and a sighting star 11 connected to the positioning scanner 10, wherein the positioning scanner 10 is composed of a laser TOF ranging module and a gyroscope module;

[0048] The direction adjustment bracket is connected to the mounting shell 8 and is used to adjust the orientation of the mounting shell 8 .

[0049] As can be seen from the above, by setting up an alarm clock that transmits sound in a directionally controlled manner, including an installation shell 8, a controller 12, a speaker array 9, a scanning and positioning component, and a direction adjustment bracket, the user can locate the user's position relative to the installation shell through the scanning and positioning component, and the controller 12 memorizes the position. When the time is close to the set alarm time of the user in that position, the controller 12 controls the direction adjustment bracket to rotate so that the speaker array 9 on the installation shell faces the user's position, and then the speaker array 9 emits directional sound waves to remind the user, effectively avoiding noise pollution while accurately reminding the user in the corresponding position.

[0050] See also Figure 2 - Figure 4 As shown, the direction adjustment bracket includes a base 1, a rotating drum 2 rotatably connected to the base 1 and a rotating plate 6 rotatably connected to the rotating drum 2, the base 1 is provided with an internal tooth groove 3, the inner wall of the rotating drum 2 is fixedly connected to a first motor 4, and the end of the output shaft of the first motor 4 is fixedly connected to a gear 5 meshing with the internal tooth groove 3, the side wall of the rotating drum 2 is fixedly connected to a second motor 7, and the output shaft of the second motor 7 is fixedly connected to the rotating plate 6.

[0051] See also Figure 3 - Figure 4 As shown, when the output shaft of the first motor 4 drives the gear 5 to rotate, the gear 5 will rotate inside the inner tooth groove 3. At this time, the gear 5 will drive the rotating drum 2 to rotate through the first motor 4. At this time, the horizontal rotation of the mounting shell 8 and the speaker array 9 can be achieved. When the output shaft of the second motor 7 rotates, the output shaft of the second motor 7 will drive the rotating plate 6 to rotate. At this time, the pitch adjustment of the mounting shell 8 and the speaker array 9 can be achieved. Through two adjustments, the speaker array 9 can be accurately directed towards the user.

[0052] The first motor 4, the second motor 7, the speaker array 9 and the positioning scanner 10 are all electrically connected to the controller 12, and the controller 12 is configured to:

[0053] The direction adjustment bracket is controlled to rotate to adjust the direction of the speaker array 9. At this time, the controller 12 records the parameters of the laser TOF ranging module and the gyroscope module as the user's positioning data in this direction. The user can determine the direction of the speaker array 9 by the aiming star 11;

[0054] The speaker array 9 is controlled to emit directional sound waves in the direction angle range set by the user. Through the superposition of the sound wave phase, the direction of the sound wave is accurately controlled, effectively avoiding the diffusion of the sound wave and the generation of noise.

[0055] The controller 4 has a built-in beamforming algorithm for controlling the speaker array 9 to emit sound waves within a set angle range.

[0056] The beamforming algorithm operates as follows:

[0057] Calculate the relative delay between the speaker array elements of the speaker array 9 and express the position of the nth speaker array element as The time delay of the loudspeaker element relative to the center of the loudspeaker array 9 is:

[0058] Design the fractional delay filter, the formula is expressed as: Where L is the filter order and w(k) is the window function;

[0059] A variable window function is used to suppress the side lobes, and the weight coefficient Wn is defined as: Used to update weights based on real-time angles, where Taylro is used to customize the sidelobe level (SLL) and mainlobe width;

[0060] The input signal S(t) of each speaker is passed through the corresponding h delay (k), we get: Sn(t)=S(t)*h delay (k), and after amplitude weighting, we get S′n(t)=Wn·Sn(t), and then superimpose the output to get

[0061] During use, the user can control the first motor 4 and the second motor 7 to rotate through the controller 12 so that the speaker array 9 is aligned with the user. The user in the corresponding position can judge whether the direction of the speaker array 9 is aligned through the aiming star 11, and the controller 12 records the parameters of the laser TOF ranging module and the gyroscope module in this posture, and then sets the alarm time through the controller 12. When the time is about to approach the alarm start time, the controller 12 controls the first motor 4 and the second motor 7 to rotate according to the recorded parameters of the laser TOF ranging module and the gyroscope module, and then adjusts the direction of the speaker array 9. Then, the controller 12 controls the speaker array 9 to emit directional sound waves to the user in this position. In order to prevent the user in this position from positional deviation, the controller 12 can be used to The controller 12 controls the sound wave emission angle of the speaker array 9 so that the sound waves are sent within a certain angle cone range with the set direction as the center line. The sound wave scanning is used to avoid as much as possible the situation where the user cannot receive the directional sound waves. The user can set multiple alarm times through the controller 12, and each alarm time corresponds to a direction. The controller 12 records the parameters of the laser TOF ranging module and the gyroscope module of the direction. After the set alarm time is reached, the controller 12 controls the first motor 4 and the second motor 7 to rotate, adjust the direction of the speaker array 9, and realize the wake-up function at different times and directions. In addition, the communication interface of the controller 12 can be reserved on the mounting shell 8, which is convenient for the user to adjust the function of the controller 12 and independently set the alarm time, alarm music, etc.

[0062] All standard parts used in the present invention can be purchased commercially, and special-shaped parts can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. In addition, the circuit connections adopt conventional connection methods in the prior art and will not be described in detail here. Any matters not described in detail in this specification belong to the prior art known to professionals in this field.

[0063] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. "Multiple" means two or more, unless otherwise specifically defined.

[0064] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0065] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0066] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0067] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

Claims

1. An alarm clock with directional sound transmission, characterized in that: include: A mounting shell (8) is internally connected to a controller (12); A speaker array (9) is connected to the mounting shell (8) and is used to emit sound waves outward according to instructions from the controller (12); a scanning and positioning component connected to the mounting shell (8) for scanning and positioning a user, comprising a positioning scanner (10) connected to the mounting shell (8) and a sighting star (11) connected to the positioning scanner (10), wherein the positioning scanner (10) is composed of a laser TOF ranging module and a gyroscope module; A direction adjustment bracket is connected to the mounting shell (8) and is used to adjust the orientation of the mounting shell (8).

2. The directional sound propagation alarm clock according to claim 1, characterized in that: The speaker array (9) and the positioning scanner (10) are both electrically connected to the controller (12), and the controller (12) is configured to: The loudspeaker array (9) is controlled to emit directional sound waves in a direction angle range set by a user.

3. The directional sound propagation alarm clock according to claim 2, characterized in that: The controller (4) has a built-in beamforming algorithm for controlling the speaker array (9) to emit sound waves within a set angle range.

4. The alarm clock with directional sound transmission according to claim 3, characterized in that: The beamforming algorithm operates as follows: Calculate the relative delay between the speaker elements of the speaker array (9), and express the position of the nth speaker element as The time delay of the loudspeaker array element relative to the center of the loudspeaker array (9) is: Design the fractional delay filter, the formula is expressed as: Where L is the filter order and w(k) is the window function; A variable window function is used to suppress the side lobes, and the weight coefficient Wn is defined as: Used to update weights based on real-time angles, where Taylro is used to customize the sidelobe level (SLL) and mainlobe width; The input signal S(t) of each speaker is passed through the corresponding h delay (k), we get: Sn(t)=S(t)*h delay (k), and after amplitude weighting, we get S′n(t)=Wn·Sn(t), and then superimpose the output to get

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