Noise reduction distance measurement early warning helmet

Abstract

The utility model discloses a noise reduction distance measurement early warning helmet which comprises a helmet body, a radar distance measurement module is arranged outside the helmet body, the positions, corresponding to the ears of the human body, of the two sides of the helmet body are each provided with an earmuff hole, a noise reduction earmuff is arranged in each earmuff hole, and a noise reduction module and an early warning headset are arranged in each noise reduction earmuff. The early warning headset is in wireless connection with the control module, and the control module is connected with the radar ranging module; the noise reduction module comprises a plurality of layers of sound-absorbing cotton strips, the layers of sound-absorbing cotton strips are mutually independent, and the size of each layer of sound-absorbing cotton strips is matched with the internal size of the earmuff shell. According to the helmet, the multiple layers of sound-absorbing cotton strips are arranged in the earmuffs of the helmet body to reduce external wind noise and high-light trumpet sound, voice reminding is provided through the early warning headset, safe driving of a driver is effectively improved, and physical and mental pleasure is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of cycling safety, in particular to a noise reduction, ranging and early warning helmet. Background Art

[0002] In recent years, with the continuous development of battery technology and the improvement of battery life, electric vehicles have become an essential means of transportation for students, office workers, and various delivery personnel. Its auxiliary safety product, helmets, is also an indispensable safety device for people. However, traditional helmets only provide a certain level of safety and wind protection. Regarding some scenarios during riding, we believe that traditional helmets have several shortcomings: 1. When riding and turning, some drivers do not pay attention to the vehicles coming from behind or have blind spots, which does not serve as a warning; 2. When riding on roads with loud horns such as large trucks, helmets do not play a role in reducing noise. Especially when riding on roads with large trucks, facing sudden loud horns or cars suddenly overtaking, will cause great fluctuations in the physical and mental state of electric vehicle drivers, affecting driving safety. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a noise reduction and ranging warning helmet which can improve the noise reduction function of the helmet and can provide timely warning.

[0004] In order to solve the above technical problems, the utility model provides a noise reduction and ranging warning helmet, which includes a helmet body. A radar ranging module is arranged on the outside of the helmet body, and the radar ranging module is connected to a control module.

[0005] Furthermore, there are two radar ranging modules, which are respectively arranged on the left and right sides of the helmet body. The radar ranging module includes a radar ranging sensor, and each of the radar ranging sensors is provided with two probes, and the directions of the two probes correspond to the left front, left rear, right front and right rear of the helmet body respectively.

[0006] The radar ranging sensor is used to accurately identify the position and orientation of the front and rear vehicles.

[0007] The radar ranging sensor is used to obtain information about vehicles in front and behind. If the current rear vehicle is within 20 meters of the vehicle, the radar ranging sensor will transmit the detected information to the control module. The control module is used to receive the distance and direction information detected by the radar ranging sensor to determine the distance of the rear vehicle. If the distance of the front or rear vehicle reaches the preset distance, the vehicle warning is triggered.

[0008] An earmuff hole is provided on both sides of the helmet body at positions corresponding to the positions of human ears, a noise reduction earmuff is provided in each earmuff hole, a noise reduction module and an early warning headset are provided in each noise reduction earmuff, and the early warning headset is wirelessly connected to the control module. When the vehicle early warning is triggered, the control module sends an alarm message through the early warning headset.

[0009] Furthermore, the noise-reducing earmuff includes an earmuff shell, which is a semicircular hollow shell with an open base. A baffle is provided at the opening of the earmuff shell, and four plastic springs are evenly distributed on the lower end surface of the baffle near the edge. An inlet and outlet are provided in the middle position of the baffle, and the inlet and outlet can pass through the upper and lower end surfaces of the baffle to connect the inside and outside of the earmuff shell. A first screw hole is provided on the baffle near the inlet and outlet, and the warning headset is fixed by a first screw using the first screw hole.

[0010] Furthermore, the warning headset includes a playback end and a handle end, the handle end is provided with a fourth screw hole, and the first screw fixes the warning headset to the baffle through the first screw hole and the fourth screw hole.

[0011] Furthermore, two second screw holes are provided on the top of the earmuff shell, a bolt is provided in each of the two second screw holes, and nuts are provided on the two bolts.

[0012] Furthermore, the noise reduction module includes multiple layers of sound-absorbing cotton strips, each layer of the sound-absorbing cotton strips is independent of each other, and the size of each layer of the sound-absorbing cotton strips matches the internal size of the earmuff shell. The multiple layers of sound-absorbing cotton strips can reduce external wind noise and high-brightness speaker sounds.

[0013] Multi-layer sound-absorbing cotton strips can reduce the spread of noise by absorbing the energy in sound waves, reducing the noise level to below the preset decibel threshold.

[0014] Furthermore, two third screw holes are provided on each layer of the sound-absorbing cotton strips corresponding to the two second screw holes. After the corresponding bolts pass through the corresponding second screw holes and third screw holes, the corresponding nuts are used to fix the multiple layers of the sound-absorbing cotton strips in the earmuff shell.

[0015] The bolts and nuts can be fixed and disassembled as needed, so the number and thickness of the multi-layer sound-absorbing cotton strips can be manually adjusted according to needs. By adjusting the multi-layer sound-absorbing cotton strips of different thicknesses or densities, the sound absorption effect can be adjusted to adapt to noises of different frequencies and intensities, thereby improving the controllability of the sound absorption effect.

[0016] Furthermore, the edge portion of each layer of the sound-absorbing cotton strips is arranged in the space between the baffle and the earmuff shell, which can beautify the appearance of the sound-reducing earmuff.

[0017] The sound-absorbing cotton strips are made of fiber products and are easy to bend, so they can be put into the earmuff shell from the entrance and exit. When put in, the sound-absorbing cotton strips will be deformed due to the obstruction of the inner edge of the baffle. After putting it in, the obstruction is eliminated and the sound-absorbing cotton strips return to their original shape.

[0018] The warning earphone can broadcast the direction information and distance information of the oncoming vehicle from my car by voice; the playback end of the warning earphone is arranged on the outside of the multiple layers of the sound-absorbing cotton strips, located at the entrance and exit, close to the direction of the human ear, to prevent the sound-absorbing cotton strips from weakening the volume of the warning earphone.

[0019] A circle of protrusions is provided on the inner side wall of the earmuff hole. When installing the earmuff, the earmuff shell is placed into the earmuff hole. During the placement process, the plastic spring piece on the earmuff shell will be concave inward due to the interaction between the force and the protrusion. When the plastic spring piece falls below the protrusion, there is no squeezing of the protrusion on the plastic spring piece, and it returns to its original position and is stuck under the protrusion, thereby being fixed on the helmet body.

[0020] The beneficial effects of the utility model are:

[0021] 1. This helmet reduces external wind noise and loud horn sounds by installing multiple layers of sound-absorbing cotton strips inside the helmet's earmuffs. The reduced loud horn sounds will not cause physical or mental harm to the rider. In addition, by installing a radar ranging sensor and warning headset on the helmet itself, the rider can receive voice reminders of oncoming vehicles in front and behind when wearing the helmet. In case of turns or other areas that are beyond vision, the rider is reminded to turn safely. Therefore, while reducing noise, the helmet can also provide voice reminders. Therefore, this helmet can effectively improve driver safety and maintain physical and mental well-being.

[0022] 2. The multi-layer sound-absorbing cotton strips on this helmet can achieve noise suppression effects through manual adjustment. The noise suppression effect can be controlled by increasing or decreasing the number or thickness of the sound-absorbing cotton strips. It is equipped with manually adjustable bolts and nuts, allowing users to freely adjust the number of sound-absorbing cotton strips according to needs, thereby improving the controllability of the sound absorption effect.

[0023] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only three of the drawings in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1: Front view of the helmet of the device;

[0026] Figure 2 : Figure 1 Right view;

[0027] Figure 3 : Figure 1 Rear view;

[0028] Figure 4 : Figure 1 A partial view of the earmuff holes on the helmet body where the middle noise-reduction earmuffs cover;

[0029] Figure 5 : Schematic diagram of the structure of noise reduction earmuffs;

[0030] Figure 6 : Figure 5 Bottom view of

[0031] Figure 7 : Side view of noise-canceling earmuffs Figure 1 (The protrusions and sound-absorbing cotton strips are not drawn);

[0032] Figure 8 : Side view of noise-canceling earmuffs Figure 2 (The protrusions are not shown). DETAILED DESCRIPTION

[0033] The following describes embodiments of the present invention in more detail with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0034] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, they may be fixedly connected, detachably connected, or integrated. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0035] The names of the messages or information exchanged between multiple devices in the embodiments of the present invention are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0036] Example: As shown in the figure, 1- helmet body, 2- radar ranging sensor, 3- earmuff hole, 4- noise reduction earmuff, 5- warning headset, 6- earmuff shell, 7- baffle, 8- plastic shrapnel, 9- inlet and outlet, 10- first screw hole, 11- bolt, 12- nut, 13- sound-absorbing cotton strip, 14- protrusion, 15- first screw.

[0037] A noise reduction and ranging warning helmet comprises a helmet body 1. A radar ranging module is provided on both the left and right sides of the exterior of the helmet body 1. The radar ranging module is used to accurately identify the position and orientation of vehicles in front and behind.

[0038] The radar ranging module adopts an LCFM radar ranging sensor 2 . Each radar ranging sensor 2 is provided with two probes, and the directions of the two probes correspond to the left front, left rear, right front and right rear of the helmet body 1 respectively.

[0039] The LCFM radar ranging sensor 2, measuring just 50 mm x 25 mm, offers low power consumption, low cost, fast dynamic response, minimal temperature drift, and a long lifespan, making it ideal for structural monitoring. The low-power co-phase radar uses low-power pulses to transmit co-phase frequency-modulated radar signals. The reflected signals can be superimposed, ensuring a high signal-to-noise ratio that meets precise ranging requirements while maintaining low power consumption. Testing has verified that the LCFM radar achieves 1 mm accuracy for frequency ranging within a 12 m range and 0.1 mm accuracy for phase ranging within a 4.2 m range. Structural monitoring practitioners can choose from a variety of application scenarios based on the performance characteristics of the LCFM.

[0040] The radar ranging sensor 2 is wirelessly connected to the control module, which uses the STM32F10VET6 main control microcontroller.

[0041] The LCFM radar ranging sensor 2 is used to obtain information about vehicles in front and behind. The radar ranging sensor 2 transmits the detected information to the control module. When the vehicle in front and behind is within 20 meters of the vehicle, the control module triggers a vehicle warning.

[0042] An earmuff hole 3 is provided on both sides of the helmet body 1 corresponding to the position of the human ear, and a noise reduction earmuff 4 is provided in each earmuff hole 3. Each noise reduction earmuff 4 is provided with a noise reduction module and an early warning headset 5. The early warning headset 5 is wirelessly connected to the control module. When the vehicle early warning is triggered, the control module sends an alarm message through the early warning headset 5.

[0043] Each radar ranging sensor 2 is equipped with two probes, and the directions of the two probes correspond to the left front, left rear, right front, and right rear of the helmet body 1, respectively, so that the horizontal detection range of the helmet can basically reach 360 degrees. Motor vehicles within 30 meters can detect the direction and distance and feedback to the control module. Within 20 meters, the control module will cause the warning headset 5 to issue an alarm to remind the rider of the vehicle's direction information and distance. The detection frequency is 40 Hz. Of course, in other embodiments, only the rear probe can be set according to actual needs, and the detection frequency can also be adjusted.

[0044] The noise reduction earmuff 4 includes an earmuff shell 6, which is a semicircular hollow shell with an open metal base. A baffle 7 is provided at the opening of the earmuff shell 6. The earmuff shell 6 and the baffle 7 are an integrated structure. Four plastic springs 8 are evenly distributed on the lower end surface of the baffle 7 near the edge. An inlet and outlet 9 is provided in the middle position of the baffle 7. The inlet and outlet 9 can pass through the upper and lower end surfaces of the baffle 7. A first screw hole 10 is provided on the baffle 7 near the inlet and outlet 9.

[0045] Two second screw holes are provided at the top of the earmuff shell 6 , a bolt 11 is provided in each of the two second screw holes, and a nut 12 is provided on each of the two bolts 11 .

[0046] The noise reduction module includes multiple layers of sound-absorbing cotton strips 13, each layer of sound-absorbing cotton strips 13 is independent of each other, and the size of each layer of sound-absorbing cotton strips 13 matches the internal size of the earmuff shell 6. The multiple layers of sound-absorbing cotton strips 13 can reduce external wind noise and high-brightness speaker sounds.

[0047] Two third screw holes are provided on each layer of sound-absorbing cotton strips 13 corresponding to the two second screw holes. After the corresponding bolts 11 pass through the corresponding second screw holes and third screw holes, the multi-layer sound-absorbing cotton strips 13 are fixed in the earmuff shell 6 using the corresponding nuts 12.

[0048] Through various scene tests, the noise decibel value of large trucks on the road can reach 60-80 decibels. Research data shows that the most comfortable decibel value for human ears is below 40 decibels. Therefore, the multi-layer sound-absorbing cotton strips 13 only need to reduce the noise by 20-40 decibels.

[0049] In this embodiment, the signal processed by the multi-layer sound insulation cotton noise suppression module will enter the human ear canal, ensuring that the incoming sound signal will not be greater than the preset sound decibel value.

[0050] The warning headset 5 includes a playback end and a handle end. The handle end is provided with a fourth screw hole. The warning headset 5 is fixed to the baffle 7 by using a first screw 15 through the first screw hole 10 and the fourth screw hole.

[0051] The edge portion of each layer of sound-absorbing cotton strips 13 is arranged in the space between the baffle 7 and the earmuff shell 6, which can beautify the appearance of the noise-reducing earmuff.

[0052] The playback end of the warning earphone 5 is arranged outside the multi-layer sound-absorbing cotton strip 13 , close to the human ear, to prevent the sound-absorbing cotton strip 13 from weakening the volume of the warning earphone 5 .

[0053] There are two early warning earphones 5 , which are respectively arranged in two noise reduction earmuffs 4 , and the positions of the two early warning earphones 5 correspond to the positions of the human ears.

[0054] The function of the early warning headset 5 is to accurately broadcast the position and direction of the vehicles in front and behind. Specifically, in this embodiment, the control module receives external information in real time through the radar ranging module and selects to play the pre-set "1-4 voice playback package" through the early warning headset 5.

[0055] The voice announcements for Voice Playback Package 1 are "The vehicle behind you is 20 meters away on the left," "The vehicle behind you is 15 meters away on the left," "The vehicle behind you is 10 meters away on the left," and "The vehicle behind you is 5 meters away on the left." The voice announcement for distances within 5 meters is "Pay attention to the vehicle coming from behind you on the left."

[0056] The voice announcements for Voice Playback Package 2 are "The vehicle in front of you on the left is 20 meters away," "The vehicle in front of you on the left is 15 meters away," "The vehicle in front of you on the left is 10 meters away," and "The vehicle in front of you on the left is 5 meters away." The voice announcement for distances within 5 meters is "Watch out for vehicles coming from the left."

[0057] The voice announcements for Voice Playback Package 3 are "The vehicle behind you is 20 meters away," "The vehicle behind you is 15 meters away," "The vehicle behind you is 10 meters away," and "The vehicle behind you is 5 meters away." The voice announcement for vehicles within 5 meters is "Watch out for vehicles coming from behind you."

[0058] The voice broadcast package No. 4 is as follows: "The vehicle in front of you is 20 meters away on the right", "The vehicle in front of you is 15 meters away on the right", "The vehicle in front of you is 10 meters away on the right", "The vehicle in front of you is 5 meters away on the right", and the voice broadcast within 5 meters is "Watch out for vehicles coming from the right".

[0059] If there are vehicles in front and behind, the priority is to broadcast the voice warning to the vehicle closest to the electric vehicle.

[0060] A circle of protrusions 14 is provided on the inner wall of the earmuff hole 3. When installing the earmuff, the earmuff shell 6 is placed into the earmuff hole 3. During the placement process, the plastic spring piece 8 on the earmuff shell 6 will be concave inward due to the interaction between the force and the protrusion 14. When the plastic spring piece 8 falls below the protrusion 14, the plastic spring piece 8 is no longer squeezed by the protrusion 14 and returns to its original position, getting stuck under the protrusion 14 and then being fixed to the helmet body 1.

[0061] The process of using the overall technical solution formed by the above embodiments is as follows: when a person wearing a helmet puts on the helmet and goes on the road, the radar ranging module is used to obtain the distance to the surrounding vehicles, and the radar ranging sensor 2 transmits the signal to the control module in real time. When the radar ranging sensor 2 detects that the distance between the front and rear vehicles and the vehicle reaches a dangerous distance, the control module will issue an alarm through the early warning headset 5, and voice broadcast the direction information and vehicle distance information of the oncoming vehicle from the vehicle to remind the driver; at the same time, the multi-layer sound-absorbing cotton strips 13 arranged in the earmuffs of the helmet body 1 can reduce external wind noise and high-brightness horn sounds, and the reduced high-brightness horn sounds will not cause harm to people's physical and mental health.

[0062] Note that the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are readily apparent to those skilled in the art without departing from the scope of protection of the present invention. Therefore, while the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the appended claims.

Claims

1. A noise reduction and ranging warning helmet, comprising a helmet body, characterized by: The outside of the helmet body is provided with a radar ranging module, and an earmuff hole is provided at both sides of the helmet body corresponding to the position of the human ear, and a noise reduction earmuff is provided in each earmuff hole, and the noise reduction earmuff is provided with a noise reduction module and an early warning ear microphone, the early warning ear microphone is wirelessly connected to the control module, and the control module is connected to the radar ranging module; the noise reduction earmuff includes an earmuff shell, the earmuff shell is a semicircular hollow shell open base, a baffle is provided at the opening of the earmuff shell, four plastic spring pieces are evenly distributed on the lower end surface of the baffle near the edge, an inlet and outlet are provided in the middle position of the baffle, and a A first screw hole is provided, and the warning earphone is fixed with a first screw through the first screw hole; two second screw holes are provided at the top of the earmuff shell, and a bolt is provided in each of the two second screw holes, and nuts are provided on the two bolts; the noise reduction module includes multiple layers of sound-absorbing cotton strips, each layer of the sound-absorbing cotton strips is independent of each other, and the size of each layer of the sound-absorbing cotton strips matches the internal size of the earmuff shell; two third screw holes are provided on each layer of the sound-absorbing cotton strips corresponding to the two second screw holes, and the corresponding bolts pass through the corresponding second screw holes and third screw holes and then use the corresponding nuts to fix the multiple layers of the sound-absorbing cotton strips in the earmuff shell.

2. The noise reduction and ranging warning helmet according to claim 1, characterized in that: There are two radar ranging modules, which are respectively arranged on the left and right sides of the helmet body. The radar ranging module includes a radar ranging sensor. Each radar ranging sensor is provided with two probes, and the directions of the two probes correspond to the left front, left rear, right front and right rear of the helmet body respectively.

3. The noise reduction and ranging warning helmet according to claim 2, characterized in that: The edge portion of each layer of the sound-absorbing cotton strips is arranged in the space between the baffle and the earmuff shell.

4. The noise reduction and ranging warning helmet according to claim 3 is characterized by: The early warning earphone includes a playback end and a handle end, the handle end is provided with a fourth screw hole, the first screw fixes the early warning earphone to the baffle through the first screw hole and the fourth screw hole, and the playback end of the early warning earphone is arranged outside the multiple layers of the sound-absorbing cotton strips, close to the direction of the human ear.

5. The noise reduction and ranging warning helmet according to claim 4 is characterized by: A circle of protrusions is arranged on the inner side wall of the earmuff hole.

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