CN216886472U - Directional sounder and pedestrian warning device - Google Patents
Directional sounder and pedestrian warning device Download PDFInfo
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- CN216886472U CN216886472U CN202122713797.8U CN202122713797U CN216886472U CN 216886472 U CN216886472 U CN 216886472U CN 202122713797 U CN202122713797 U CN 202122713797U CN 216886472 U CN216886472 U CN 216886472U
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Abstract
The application provides a directional sounder and pedestrian device of warning, directional sounder in this application first aspect includes: the shell is of a bowl-shaped structure; the sounding device is arranged in the inner concave cavity of the shell and located at the bottom of the inner concave cavity, and the sounding part of the sounding device faces the opening of the shell. The directional sounder casing that this application first aspect provided sets up to bowl form structure, and places the bottom that the casing was arranged in to the sound generating mechanism's interior concave cavity and was located the concave cavity in, and sound generating mechanism's sound-producing portion sets up towards the opening of casing. The sound wave draws in when being provided with of casing does benefit to the sound generating mechanism sound production, and sound generating mechanism's sound is propagated towards the opening orientation of casing, has avoided the sound wave to dispersing all around, and reinforcing sound is from the car to pedestrian direction transmission effect to play reinforcing effect and reinforcing to the sound wave and to the warning effect of pedestrian, guarantee the car security of traveling.
Description
Technical Field
The application relates to the technical field of directional sounding, in particular to a directional sounder and a pedestrian warning device.
Background
A common automobile alarm sounder generates sound waves which are emitted to the periphery in a diffusion mode, when a distance between a pedestrian and an automobile is far, due to the attenuation effect of the sound waves, the warning sound received by the pedestrian is weak, and the pedestrian is difficult to be effectively reminded of paying attention to the driving of the automobile.
In view of this, there is a need for a new directional sounder and pedestrian warning device.
Disclosure of Invention
The first aspect of the application provides a directional sound generator which reduces sound wave divergence and enhances the transmission of sound from a vehicle to a pedestrian.
The directional sounder in a first aspect of the present application, comprising:
the shell is of a bowl-shaped structure;
the sounding device is arranged in the inner concave cavity of the shell and located at the bottom of the inner concave cavity, and the sounding part of the sounding device is arranged towards the opening of the shell.
The directional sounder casing that this application first aspect provided sets up to bowl form structure, and places the bottom that the casing was arranged in to the sound generating mechanism's interior concave cavity and was located the concave cavity in, and sound generating mechanism's sound-producing portion sets up towards the opening of casing. The sound wave draws in when being provided with of casing does benefit to the sound generating mechanism sound production, and sound generating mechanism's sound is propagated towards the opening orientation of casing, has avoided the sound wave to dispersing all around, and reinforcing sound is from the car to pedestrian direction transmission effect to play reinforcing effect and reinforcing to the sound wave and to the warning effect of pedestrian, guarantee the car security of traveling.
In some alternative embodiments of the first aspect of the present application, the housing comprises:
a sound insulation support layer, wherein the sound insulation support layer is provided with an opposite inner concave side and an outer convex side in the thickness direction of the sound insulation support layer,
and the sound insulation foaming layer is arranged on the concave side and the convex side.
In some alternative embodiments of the first aspect of the present application, the sound-insulating support layer comprises a fibrous cellular sound-insulating sheet material and the sound-insulating foam layer comprises an article of polyethylene terephthalate material.
In some optional embodiments of the first aspect of the present application, the directional sounder further comprises:
the dustproof net covers the opening of the shell, and the aperture value range of the meshes of the dustproof net is between 0.2mm and 0.4 mm.
In some optional embodiments of the first aspect of the present application, a through hole is formed in a bottom portion of the housing, and a power cord of the sound generating device extends out of the inner cavity of the housing through the through hole.
In some optional embodiments of the first aspect of the present application, a sound-proof sealing ring is disposed between the through hole and the power line.
In some alternative embodiments of the first aspect of the present application, the directional sounder further comprises a base,
the base is arranged on the outer convex side of the shell and is opposite to the sound generating device.
The pedestrian warning device comprises a directional sounder, a thermal sensing detector and an electronic control unit;
the heat induction detector is connected with the electronic control unit and used for detecting the position information of the automobile and the life body in the driving direction of the automobile in real time and sending the position information to the electronic control unit;
the electronic control unit is connected with the directional sounder and used for receiving the position information sent by the thermal sensing detector, generating a control command according to the position information, sending the control command to the directional sounder and controlling the automobile to decelerate, or controlling the automobile to run at the original speed according to the control command;
the directional sounder is used for receiving a control command sent by the electronic control unit and giving out warning sound according to the control command, and the directional sounder is the directional sounder of the first aspect of the application.
The pedestrian warning device that this application second aspect provided, the position information of car and life body on the direction of travel of car is surveyed in real time to heat-sensitive detector in the pedestrian warning device, and the electronic control unit generates control command according to position information. The directional sounder gives out warning sound according to the control instruction, and does not simply send the warning sound to the front of the vehicle in the low-speed running process. The pedestrian warning device provided by the second aspect of the application reduces the NVH value (N represents Noise, V represents Vibration and H represents Harshness sound and Vibration roughness) of the vehicle during driving, reduces the pollution of the warning device to Noise in the vehicle, and improves the driving and riding comfort. Meanwhile, the directional sounder enhances the directional propagation performance of the warning sound to pedestrians, plays an effective reminding role for the pedestrians in front of the running vehicle, and avoids potential safety hazards in the running process of the vehicle.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a top view of a directional sounder in embodiment 1 of the first aspect of the present application;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
fig. 3 is a side view of a directional sounder in embodiment 1 of the first aspect of the present application;
fig. 4 is a flowchart of the operation of the pedestrian warning apparatus in embodiment 2 of the second aspect of the present application;
in the figure:
a housing-11; sound insulation support layer-111; a first sound-insulating foam layer-112 a; a second sound-insulating foam layer-112 b;
a sound-producing device-12; a base-13; a power supply line-14; a dust screen-15.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The inventor finds that the noise of the vehicle, especially the electric vehicle, is low during the running process, so that pedestrians cannot find the running vehicle out of the visual field of the pedestrians, and the vehicle has a great potential safety hazard. And when the sound production attention device among the general pedestrian warning device sounded for the sound wave is to diffusion all around, and the influence is propagated to pedestrian's acoustic output and has been weakened warning sound simultaneously and has been warned the effect to pedestrian's warning. When the sounding of the sounding warning device is transmitted to the periphery, the sound can be transmitted to the inside of the vehicle, so that the noise in the vehicle is too large, the NVH value of the vehicle running is reduced, and the riding comfort is greatly reduced.
A first aspect of the present application provides a directional sounder comprising a housing and a sounding device.
The casing is bowl form structure, places the interior concave cavity of casing in the sound generating mechanism and is located the bottom of interior concave cavity, and sound generating mechanism's sound production portion sets up towards the opening of casing.
The directional sounder casing that this application first aspect provided sets up to bowl form structure, and places the bottom that the casing was arranged in to the sound generating mechanism's interior concave cavity and was located the concave cavity in, and sound generating mechanism's sound-producing portion sets up towards the opening of casing. The sound wave draws in when being provided with of casing does benefit to the sound generating mechanism sound production, and sound generating mechanism's sound is propagated towards the opening orientation of casing, has avoided the sound wave to dispersing all around, and reinforcing sound is from the car to pedestrian direction transmission effect to play reinforcing effect and reinforcing to the sound wave and to the warning effect of pedestrian, guarantee the car security of traveling.
In some alternative embodiments, the shell includes an acoustically insulating support layer and an acoustically insulating foam layer.
In the thickness direction of the sound insulation support layer, the sound insulation support layer is provided with opposite concave sides and convex sides. The sound insulation foaming layer comprises a first sound insulation foaming layer and a second sound insulation foaming layer. The first sound insulation foaming layer is arranged on the concave side of the sound insulation supporting layer, and the second sound insulation foaming layer is arranged on the convex side of the sound insulation supporting layer.
In these alternative embodiments, the housing is bowl-shaped and has multiple layers of sound insulation, the housing enhancing the divergent sound waves emitted from the sound generator and directing the sound waves from the bowl opening of the housing. The bowl-shaped shell with the sound insulation is beneficial to directionally transmitting the sound emitted by the sound generating device to the range needing to be covered, and under the condition that the generating amount of the sound generating device is the same, the sound generating device provided by the embodiment can directionally transmit warning sounds to pedestrians by intersecting with a common sound generating device, so that the pedestrians in the front of the vehicle can be effectively reminded, and the driving safety performance is enhanced.
In some alternative embodiments, the sound insulating support layer comprises a fibrous porous sound insulating sheet material and the sound insulating foam layer comprises an article of polyethylene terephthalate material.
In some specific examples, the sound-insulating support layer comprises a fibrous porous sound-insulating sheet material having a thickness of 1mm, the first and second sound-insulating foam layers each have a thickness of 5mm, and both the first and second sound-insulating foam layers comprise a polyethylene terephthalate material product.
In some optional embodiments, the directional sounder further comprises a dust screen, the dust screen is covered on the opening of the housing, and the aperture of the mesh of the dust screen ranges from 0.2mm to 0.4 mm.
In the embodiments, the arrangement of the dustproof net ensures the tone quality and simultaneously avoids the directional sounder from being influenced by dust and other sundries, thereby indirectly improving the driving safety performance of the vehicle.
In some optional embodiments, the bottom of the casing is provided with a through hole, and a power line of the sound generating device extends out of the inner cavity of the casing through the through hole.
In some optional embodiments, a sound-proof sealing ring is arranged between the through hole and the power line. In some specific examples, the sound-proof sealing ring is made of an elastic polymer material, and the sound-proof sealing ring is arranged to enable no gap to exist between the through hole and the power line, so that sound waves emitted from the sound generating device are further prevented from being transmitted outwards from the gap, and the situation that the directional transmission effect of the sound emitted by the directional sound generating device is weakened by the arrangement of the through hole is avoided.
In some optional embodiments, the directional sounder further comprises a base disposed on the outer convex side of the housing and disposed opposite the sound emitting device. In some embodiments, the base and the housing are fixedly or rotatably connected. The base is fixedly arranged on the vehicle, so that the shell and the sound generating device are arranged on the vehicle.
The pedestrian warning device comprises a directional sounder, a thermal sensing detector and an electronic control unit;
the heat induction detector is connected with the electronic control unit and used for detecting the position information of the automobile and the life body in the driving direction of the automobile in real time and sending the position information to the electronic control unit;
the electronic control unit is connected with the directional sounder and used for receiving the position information sent by the thermal sensing detector, generating a control command according to the position information, sending the control command to the directional sounder and controlling the automobile to decelerate, or controlling the automobile to run at the original speed according to the control command;
the directional sounder is used for receiving a control command sent by the electronic control unit and giving out warning sound according to the control command, and the directional sounder is the directional sounder provided by the first aspect of the application.
The pedestrian warning device that this application second aspect provided, the position information of car and life body on the direction of travel of car is surveyed in real time to heat-sensitive detector in the pedestrian warning device, and the electronic control unit generates control command according to position information. The directional sounder gives out warning sound according to the control instruction, and does not simply send the warning sound to the front of the vehicle in the low-speed running process. The pedestrian warning device provided by the second aspect of the application reduces the NVH value (N represents Noise, V represents Vibration and H represents Harshness sound and Vibration roughness) of the vehicle during driving, reduces the pollution of the warning device to Noise in the vehicle, and improves the driving and riding comfort. Meanwhile, the directional sounder enhances the directional propagation performance of the warning sound to pedestrians, plays an effective reminding role for the pedestrians in front of the running vehicle, and avoids potential safety hazards in the running process of the vehicle.
In some optional embodiments, the position information includes that a distance value between the automobile and the living body is greater than a first preset threshold; the electronic control unit is used for generating a control instruction according to the position information and controlling the automobile to run at an original speed according to the control instruction, and comprises:
the electronic control unit is used for generating a control instruction when the distance value between the automobile and the life body is larger than a first preset threshold value;
and controlling the automobile to run at the original speed according to the control instruction.
In some examples, the first preset threshold is 5 meters.
In some optional embodiments, the position information includes that a distance value between the automobile and the living body is less than or equal to a first preset threshold; generating a control instruction according to the position information, sending the control instruction to a directional sounder and controlling the automobile to decelerate, and comprising the following steps:
and the electronic control unit is used for generating a control command when the distance value between the automobile and the life body is less than or equal to a first preset threshold value, sending the control command to the directional sounder and controlling the automobile to decelerate.
In some optional embodiments, the electronic control unit is configured to generate a control command when a distance value between the vehicle and the living body is less than or equal to a first preset threshold, send the control command to the sounder, and control the vehicle to decelerate, and includes:
and the electronic control unit is used for generating a control command when the distance value between the automobile and the life body is less than or equal to a first preset threshold value and greater than a second preset threshold value, sending the control command to the directional sounder and controlling the automobile to decelerate to a preset speed.
In some examples, the first preset threshold is 5 meters and the second preset threshold is 1 meter.
In some optional embodiments, the electronic control unit is configured to generate a control command when a distance value between the vehicle and the living body is less than or equal to a first preset threshold, send the control command to the sounder, and control the vehicle to decelerate, and includes:
and the electronic control unit is used for generating a control command when the distance value between the automobile and the life body is less than or equal to a second preset threshold value, sending the control command to the directional sounder and controlling the automobile to decelerate to 0.
In some examples, the second preset threshold is 1 meter.
In some optional embodiments, the electronic control unit is further configured to generate a control instruction when the re-acquired distance value between the automobile and the living body is greater than a first preset threshold, and the control instruction is used for controlling the directional sounder to turn off the warning sound and controlling the automobile to return to the original speed for driving.
In some examples, the first preset threshold is 5 meters.
In some optional embodiments, the electronic control unit is further configured to generate a start control command and send the start control command to the directional sound generator when the driving speed of the automobile is less than or equal to the first speed threshold;
and the thermal sensing detector is also used for receiving the starting control instruction and starting to detect the position information of the automobile and the life body in the driving direction of the automobile in real time according to the starting control instruction.
In some examples, the first speed threshold is 10 km/h.
Example 1
As shown in fig. 1 to 3, a directional sound generator includes a housing 11 and a sound generating device 12. Casing 11 is bowl-shaped structure, and sound generating mechanism 12 places in casing 11's interior concave cavity and is located the bottom of interior concave cavity, and sound generating mechanism 12's sound-producing portion sets up towards the opening of casing 11.
The housing 11 includes a sound-insulating support layer 111 and a sound-insulating foam layer. In the thickness direction of sound-insulating support layer 111, sound-insulating support layer 111 has opposite concave and convex sides. The sound-insulating foam layer includes a first sound-insulating foam layer 112a and a second sound-insulating foam layer 112 b. The first sound insulation foam layer 112a is provided on the concave side of the sound insulation support layer 111, and the second sound insulation foam layer 112b is provided on the convex side of the sound insulation support layer 111.
The sound insulation support layer 111 comprises a fibrous porous sound insulation plate with the thickness of 1mm, the first sound insulation foam layer 112a and the second sound insulation foam layer 112b are both 5mm thick, and the first sound insulation foam layer 112a and the second sound insulation foam layer 112b both comprise polyethylene terephthalate material products.
The directional sounder further comprises a dust screen 15, the dust screen 15 is arranged at the opening of the shell 11 in a covering mode, and the aperture range of meshes of the dust screen 15 is between 0.2mm and 0.4 mm.
The bottom of the casing 11 is provided with a through hole, and the power cord 14 of the sound generating device 12 extends out of the inner cavity of the casing 11 through the through hole.
A sound insulating gasket is provided between the through hole and the power supply line 14. The sound insulation sealing ring is made of elastic high polymer materials.
The directional sounder further includes a base 13, and the base 13 is disposed on the outer convex side of the housing 11 and is opposite to the sounding device 12. In some embodiments, the base 13 is fixedly or rotatably coupled to the housing 11. The housing 11 and the sound emission device 12 are mounted on the vehicle by fixedly mounting the base 13 on the vehicle.
Example 2
Embodiment 2 provides a pedestrian warning device, and pedestrian warning device sets up in electric automobile, and pedestrian warning device includes directional sounder, thermal sensing detector and electronic control unit.
And the heat sensing detector is connected with the electronic control unit and used for detecting the position information of the automobile and the life body in the driving direction of the automobile in real time and sending the position information to the electronic control unit. The thermal sensing detector is an infrared thermal sensing detector.
And the electronic control unit is connected with the directional sounder and used for receiving the position information sent by the thermal sensing detector, generating a control command according to the position information, sending the control command to the directional sounder and controlling the automobile to decelerate, or controlling the automobile to run at the original speed according to the control command.
And the directional sounder is used for receiving the control instruction sent by the electronic control unit and sending out warning sound according to the control instruction, and is the directional sounder in the embodiment 1.
As shown in fig. 4, the pedestrian warning apparatus operates in the following manner during the driving of the electric vehicle:
and the electronic control unit is used for generating a starting control instruction when the running speed of the automobile is less than or equal to 10km/h and sending the starting control instruction to the directional sounder. And the thermal sensing detector is used for receiving the starting control instruction and starting to detect the position information of the automobile and the life body in the driving direction of the automobile in real time according to the starting control instruction.
(1) And when the position information comprises that the distance value between the automobile and the life body in the driving direction of the automobile is larger than 5m, the electronic control unit generates a control instruction, and the electronic control unit controls the automobile to drive at the original speed according to the control instruction.
(2) And when the position information comprises that the distance value between the automobile and the life body is less than or equal to 5m, the electronic control unit generates a control instruction according to the position information, sends the control instruction to the directional sounder and controls the automobile to decelerate, the automobile decelerates to 5km/h, and the directional sounder starts to give an alarm to the life body.
(2.1) when the position information comprises that the distance value between the automobile and the life body is less than or equal to 5 meters and more than 1 meter, the electronic control unit generates a control command, sends the control command to the directional sounder and controls the automobile to decelerate, the automobile decelerates to 5km/h, and the directional sounder starts to give an alarm to the life body.
(2.1.1) when the position information comprises that the distance value between the automobile and the life body is smaller than or equal to 1m, the electronic control unit generates a control instruction, sends the control instruction to the directional sounder and controls the automobile to decelerate to 0, and the automobile decelerates to 0 and the directional sounder starts to give an alarm to the life body.
(3) And when the distance value between the automobile and the life body acquired by the electronic control unit again is larger than 5m, the electronic control unit generates a control instruction, and the control instruction is used for controlling the directional sounder to turn off the warning sound and controlling the automobile to return to the original speed for running.
In this embodiment 2, the living body refers to a living human or an animal.
The pedestrian warning device in embodiment 2 can intelligently identify position information between the living body in front of the vehicle and the electric vehicle when the electric vehicle runs at a low speed, and an electronic control unit in the pedestrian warning device makes a control instruction according to the position information between the living body and the electric vehicle as required, for example, controls a directional sound-producing device to produce sound to remind the living body, and controls the electric vehicle to decelerate to protect the safety of the living body. The directional sounder is designed to enhance the directional sounding performance, enhance the sound wave intensity and more effectively remind a living body in front of the running vehicle. After the life body is far away from the electric automobile, the electronic control unit generates a control instruction, and the control instruction is used for controlling the directional sounder to actively close the warning tone, so that the noise pollution around the electric automobile is reduced, the energy consumption is reduced, the NVH value in the automobile is improved, and the cruising mileage of the electric automobile is improved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (14)
1. A directional sounder, comprising:
the shell is of a bowl-shaped structure;
the sounding device is arranged in the inner concave cavity of the shell and located at the bottom of the inner concave cavity, and the sounding part of the sounding device faces the opening of the shell.
2. The directional sounder according to claim 1, wherein the housing comprises:
a sound-insulating support layer having opposite concave and convex sides in a thickness direction of the sound-insulating support layer,
and the sound insulation foaming layer is arranged on the concave side and the convex side.
3. The directional sounder according to claim 2, wherein the sound insulating support layer comprises a fibrous porous sound insulating sheet material and the sound insulating foam layer comprises a product of polyethylene terephthalate material.
4. The directional sounder according to any one of claims 1 to 3, further comprising:
the dustproof net cover is arranged at the opening of the shell, and the aperture value range of the meshes of the dustproof net is between 0.2mm and 0.4 mm.
5. The directional sounder according to claim 3, wherein a through hole is formed in a bottom of the housing, and a power cord of the sounder extends out of the housing recess through the through hole.
6. The directional sounder according to claim 5, wherein a sound insulating seal is provided between the through hole and the power line.
7. The directional sounder according to claim 5, further comprising a base,
the base is arranged on the convex side of the shell and is opposite to the sound generating device.
8. A pedestrian warning device is characterized by being arranged on an automobile and comprising a directional sounder, a thermal sensing detector and an electronic control unit;
the thermal induction detector is connected with the electronic control unit and used for detecting the position information of the automobile and the life body in the driving direction of the automobile in real time and sending the position information to the electronic control unit;
the electronic control unit is connected with the directional sounder and used for receiving the position information sent by the thermal sensing detector, generating a control command according to the position information, sending the control command to the directional sounder and controlling the automobile to decelerate, or controlling the automobile to run at an original speed according to the control command;
the directional sounder is used for receiving the control instruction sent by the electronic control unit and giving out warning sound according to the control instruction, and the directional sounder is according to any one of claims 1 to 7.
9. A pedestrian warning device as claimed in claim 8, characterized in that the position information comprises a distance value between the car and the living body being greater than a first preset threshold value;
the electronic control unit is used for generating the control instruction when the distance value between the automobile and the life body is larger than a first preset threshold value;
and controlling the automobile to run at the original speed according to the control instruction.
10. The pedestrian warning device according to claim 8, wherein the position information includes a distance value between the automobile and the living body being equal to or less than a first preset threshold value;
and the electronic control unit is used for generating the control instruction when the distance value between the automobile and the life body is smaller than or equal to the first preset threshold value, sending the control instruction to the directional sounder and controlling the automobile to decelerate.
11. A pedestrian warning apparatus as claimed in claim 10,
and the electronic control unit is used for generating the control command when the distance value between the automobile and the life body is smaller than or equal to a first preset threshold value and larger than a second preset threshold value, sending the control command to the directional sounder and controlling the automobile to decelerate to a preset speed.
12. A pedestrian warning apparatus as claimed in claim 11,
and the electronic control unit is used for generating the control instruction when the distance value between the automobile and the life body is smaller than or equal to the second preset threshold value, sending the control instruction to the directional sounder and controlling the automobile to decelerate to 0.
13. The pedestrian warning device of claim 9, wherein the electronic control unit is further configured to generate the control command when the re-acquired distance value between the automobile and the living body is greater than the first preset threshold, the control command being configured to control the directional sound generator to turn off a warning sound and to control the automobile to return to the original speed for driving.
14. A pedestrian warning device according to any one of claims 8 to 13, wherein the electronic control unit is further configured to generate an activation control command when the driving speed of the automobile is equal to or less than a first speed threshold value, and send the activation control command to the directional sound generator;
the thermal sensing detector is further used for receiving the starting control instruction and starting to detect the position information of the automobile and the life body in the driving direction of the automobile in real time according to the starting control instruction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122713797.8U CN216886472U (en) | 2021-11-08 | 2021-11-08 | Directional sounder and pedestrian warning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122713797.8U CN216886472U (en) | 2021-11-08 | 2021-11-08 | Directional sounder and pedestrian warning device |
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| CN216886472U true CN216886472U (en) | 2022-07-05 |
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