CN220898053U - Explosion-proof helmet with sound pickup, noise reduction and sound wave impact prevention functions - Google Patents
Explosion-proof helmet with sound pickup, noise reduction and sound wave impact prevention functions Download PDFInfo
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- CN220898053U CN220898053U CN202322457051.4U CN202322457051U CN220898053U CN 220898053 U CN220898053 U CN 220898053U CN 202322457051 U CN202322457051 U CN 202322457051U CN 220898053 U CN220898053 U CN 220898053U
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- proof helmet
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- 230000006870 function Effects 0.000 title claims abstract description 14
- 230000002265 prevention Effects 0.000 title claims abstract description 14
- 210000005069 ears Anatomy 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims description 33
- 238000004891 communication Methods 0.000 claims description 18
- 239000011241 protective layer Substances 0.000 claims description 12
- 230000002708 enhancing effect Effects 0.000 claims description 10
- 239000010410 layer Substances 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 description 24
- 238000013022 venting Methods 0.000 description 18
- 239000002360 explosive Substances 0.000 description 14
- 210000003128 head Anatomy 0.000 description 8
- 230000007613 environmental effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 210000000707 wrist Anatomy 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009982 effect on human Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 210000003454 tympanic membrane Anatomy 0.000 description 1
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- Helmets And Other Head Coverings (AREA)
Abstract
The utility model discloses an explosion-proof helmet with sound pickup, noise reduction and sound wave impact prevention functions, which comprises the following components: an explosion-proof helmet body; the sound pick-up body is arranged on the outer side wall of the explosion-proof helmet body and is arranged near the rear part of the top part of the explosion-proof helmet body; one end of the sound pressure level threshold on-off switch is connected to the pickup body through a wire; the loudspeaker is arranged on the inner side wall of the explosion-proof helmet body and is close to the position where the human ear is close to, and the loudspeaker is connected with the other end of the sound pressure level threshold on-off switch through an electric wire. According to the utility model, the sound pick-up body is arranged on the outer side wall of the explosion-proof helmet body and is close to the top of the explosion-proof helmet body, and the sound pressure level threshold on-off switch and the loudspeaker are sequentially connected with the sound pick-up body, so that an explosion-proof person can more easily judge the azimuth and the approximate distance of a sound source, and the sound pick-up body has a protective effect on human ears.
Description
Technical Field
The utility model relates to the field of explosion-proof helmets. More particularly, the utility model relates to an explosion-proof helmet with sound pickup, noise reduction and sound wave impact prevention functions.
Background
In the anti-terrorism explosive-removing and mine-removing processes, explosive-removing personnel wear explosive-removing clothes and explosive-removing helmets when moving, removing and destroying explosives, and the explosive-removing helmets provide critical protection for the heads of the personnel. The helmet is formed by adopting a nonmetal composite bulletproof material in a compression molding way, and is provided with a bulletproof mask, an illuminating lamp, a ventilation fan, a two-way communication headset and the like; the explosion venting personnel generally wear a common pickup arranged on the controller through the waist or the wrist to acquire the sound of the surrounding environment, and can also perform two-way communication with a remote commander through a two-way communication headset.
However, such a pickup has the following problems in the mine discharge process:
1. Because the pick-up position is far away from the ear, the position and the distance judgment of the sound source are easy to cause problems;
2. Because the surrounding environment is noisy, the picked sound is not clear enough, and the explosion-discharging concentration degree of explosion-discharging personnel is affected;
3. The tiny sound generated by a timer, an electric switch and the like in the explosive can not be heard or heard;
4. Once accidental explosion occurs on the explosion-discharging site, the generated high-decibel sound wave can directly impact human ears through the pickup, so that the eardrum is broken and other injuries are caused.
Therefore, it is worth to know how to design the explosion-proof helmet with the sound pick-up to solve the above-mentioned defects.
Disclosure of utility model
It is an object of the present utility model to solve at least the above problems and to provide at least the advantages to be described later.
To achieve these objects and other advantages and in accordance with the purpose of the utility model, there is provided an explosion-proof helmet having sound pickup, noise reduction, and sound wave impact prevention functions, comprising:
an explosion-proof helmet body;
The sound pick-up body is arranged on the outer side wall of the explosion-proof helmet body and is arranged close to the rear part of the head top part of the explosion-proof helmet body;
One end of the sound pressure level threshold on-off switch is connected to the pickup body through a wire;
The loudspeaker is arranged on the inner side wall of the explosion-proof helmet body and is close to the position where the human ears are close to, and the loudspeaker is connected with the other end of the sound pressure level threshold on-off switch through an electric wire.
Preferably, the number of the pick-up bodies and the number of the loudspeakers are two, and the two pick-up bodies and the two loudspeakers are respectively and correspondingly arranged on the left outer side wall, the right outer side wall and the left inner side wall of the explosion-proof helmet body.
Preferably, a flexible protective layer is arranged in the explosion-proof helmet body.
Preferably, the flexible protective layer is concavely provided with a pair of grooves;
The two speakers are correspondingly arranged in the pair of grooves.
Preferably, a sound-permeable sponge layer is arranged on one side of the loudspeaker, which faces away from the flexible protective layer.
Preferably, the sound pressure level sensor further comprises an active noise reduction processing module which is arranged on the pickup body, one end of the active noise reduction processing module is connected with the sound pressure level threshold on-off switch through an electric wire, and the other end of the active noise reduction processing module is connected with the loudspeaker through an electric wire.
Preferably, the device further comprises a bass amplifying and enhancing module, wherein the bass amplifying and enhancing module is arranged on the pickup body, one end of the bass amplifying and enhancing module is connected with the active noise reduction processing module through an electric wire, and the other end of the bass amplifying and enhancing module is connected with the loudspeaker through an electric wire.
Preferably, the explosion venting helmet further comprises a command communication audio module which is arranged at the top of the head of the explosion venting helmet body, one end of the command communication audio module is connected with the loudspeaker through a wire, and the other end of the command communication audio module is connected with a headset for a far-end commander in a wireless mode.
The utility model at least comprises the following beneficial effects:
According to the utility model, the sound pick-up body is arranged on the outer side wall of the explosion-proof helmet body and close to the rear part of the head top part of the explosion-proof helmet body, and the sound pressure level threshold on-off switch and the loudspeaker are sequentially connected with the sound pick-up body, so that explosion-proof personnel can judge the azimuth and approximate distance of a sound source more easily through the sound pick-up body, and the sound pick-up body has a protective effect on human ears.
Secondly, the utility model meets the requirement of the explosive ordnance disposal personnel for multi-azimuth listening to the environmental sound by arranging the pickup body and the loudspeaker of the left and right sound channels, thereby being convenient for intuitively judging the azimuth and the approximate distance of the sound source.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
Fig. 1 is a schematic side structural view of the explosion venting helmet according to one embodiment of the present utility model;
Fig. 2 is a side cross-sectional view of the explosive-handling helmet according to one of the aspects of the present utility model;
fig. 3 is a side view of the explosive ordnance disposal helmet according to one of the aspects of the present utility model;
Fig. 4 is a flowchart of the operation of the pickup body according to one embodiment of the present utility model.
Detailed Description
The present utility model is described in further detail below with reference to the drawings to enable those skilled in the art to practice the utility model by referring to the description.
It should be noted that the experimental methods described in the following embodiments, unless otherwise specified, are all conventional methods, and the reagents and materials, unless otherwise specified, are all commercially available; in the description of the present utility model, the orientation or positional relationship indicated by the terms are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
As shown in fig. 1 to 4, the present utility model provides an explosion-proof helmet with sound pickup, noise reduction and sound wave impact prevention functions, comprising:
An explosion-proof helmet body 1; the explosion-proof helmet body 1 is formed by adopting a nonmetal composite elastic material in a compression molding mode, and is provided with conventional equipment such as a bulletproof mask, an illuminating lamp, a ventilation fan, a two-way communication headset and the like;
the pickup body 2 is arranged on the outer side wall of the explosion-proof helmet body 1 and is arranged near the rear part of the top part of the explosion-proof helmet body 1; the position of the pickup body 2 is set, so that the pickup body 2 is close to the human ear, the distance of the sound source can be judged more clearly, the natural hearing state of the human ear is met, the pickup body 2 is provided with an acquisition processing module, and the acquisition processing module is used for acquiring sound, processing the sound to obtain a sound pressure level signal and then outputting the sound pressure level signal;
One end of the sound pressure level threshold on-off switch is connected to the pickup body 2 through a wire; specifically, the model number of the control chip in the sound pressure level threshold on-off switch is M62429, the sound pressure level threshold on-off switch is used for acquiring the sound pressure level signal output by the acquisition processing module, comparing the sound pressure level signal with the sound pressure level threshold preset in the sound pressure level threshold on-off switch and outputting the sound pressure level signal, when the acquired sound pressure level signal is greater than the preset sound pressure level threshold, the sound pressure level threshold on-off switch stops outputting, if the preset sound pressure level threshold is 80dB, and when the sound pressure level signal acquired by the pickup body 2 is greater than 80dB, the sound pressure level threshold on-off switch immediately stops outputting, so that sound cannot be transmitted into human ears;
the loudspeaker 4 is arranged on the inner side wall of the explosion-proof helmet body 1 and is close to the human ear, and the loudspeaker 4 is connected with the other end of the sound pressure level threshold on-off switch through an electric wire; the speaker 4 is close to the human ear, helps the explosive ordnance disposal personnel to more fresh and listen to the sound output from the speaker 4, wherein, the speaker 4 is provided with an output processing module, and the output processing module is used for obtaining the sound pressure level signal output by the sound pressure level threshold on-off switch, and then processing the sound signal and outputting the sound signal.
In the above technical solution, the sound collector body 2 disposed on the explosion venting helmet body 1 is used to collect the sound around the explosion venting personnel (including the tiny sound coming out from the explosive), the sound collector body 2 is disposed on the explosion venting helmet, compared with the sound collector body disposed on the waist or wrist of the explosion venting personnel, the sound collector body 2 is more distant from the human ear, so that the direction and distance of the sound source can be more clearly judged, and after the sound around the explosion venting personnel is collected from the sound collector body 2, the sound is transmitted to the speaker 4 disposed on the inner side of the explosion venting helmet body 1 and close to the human ear, and the sound is output to the human ear, so that the explosion venting personnel can more easily judge the direction and approximate distance of the sound source through the sound collector body 2; the sound pressure level threshold on-off switch is connected with the pickup body 2 and the loudspeaker 4 through wires respectively, so that the explosion-proof helmet has a good effect of automatically cutting off or communicating according to the size of the sound pressure level, the sound pressure level of impact sound waves can be heard by a person wearing the explosion-proof helmet below a threshold when accidental explosion occurs, once the sound pressure level reaches or exceeds the threshold (such as 80 dB), the sound pressure level threshold on-off switch can automatically cut off transmission of sound immediately, and connection is automatically restored immediately when the sound pressure level falls below the threshold, so that the protection effect on human ears is achieved.
In another technical scheme, the number of the pickup bodies 2 and the number of the loudspeakers 4 are two, and the two pickup bodies 2 and the two loudspeakers 4 are respectively and correspondingly arranged on the left outer side wall and the right outer side wall of the explosion venting helmet body 1 and the left inner side wall and the right inner side wall of the explosion venting helmet body; wherein, two adapter bodies 2 and two speakers 4 correspond respectively arrange about the explosive-proof helmet body 1 and set up to left sound channel and right sound channel, satisfied explosive-proof personnel and heard the demand of environmental sound through the adapter body 2 of controlling the sound channel to can reach the stereophonic effect of synchronous human ear through the speaker 4 of controlling the sound channel, can judge the position and the approximate distance of sound source directly perceivedly.
In another technical scheme, the explosion-proof helmet is characterized in that a flexible protective layer 3 is arranged in the explosion-proof helmet body 1; the flexible protective layer 3 has certain elasticity, and its material can be sponge or latex material, flexible protective layer 3 is receiving the explosion impact on the one hand and can playing the cushioning effect for the protection is arranged and is exploded personnel's head, and on the other hand also promotes the comfort after wearing the helmet for the head, makes it can laminate the head form, can not rock.
In another technical scheme, the flexible protective layer 3 is concavely provided with a pair of grooves;
The two speakers 4 are correspondingly arranged in the pair of grooves; the grooves are matched with the specifications of the speakers 4, the pair of grooves are correspondingly concavely arranged on the left side and the right side of the flexible protective layer 3 corresponding to the explosion-proof helmet, the speakers 4 are embedded and arranged in the grooves so that the two speakers 4 correspondingly arranged in the pair of grooves are closer to the close position of human ears, and the human ears of explosion-proof personnel can more easily hear the sound output by the speakers 4.
In another technical scheme, a sound-permeable sponge layer 5 is arranged on one side of the loudspeaker 4, which faces away from the flexible protective layer 3; the sound-permeable sponge layer 5 is basically not blocked to sound, and the sound-permeable sponge layer 5 is covered on the output surface of the loudspeaker 4 and is used for spacing the loudspeaker 4 and the ears of explosive personnel, so as to prevent the loudspeaker 4 from colliding with and rubbing against the ears of the head explosive personnel due to shaking of the explosive helmet body 1 and the like, and ensure that the explosive personnel cannot be scratched by the shell of the loudspeaker 4.
In another technical scheme, the sound pressure level threshold on-off switch also comprises an active noise reduction processing module which is arranged on the pickup body 2, wherein one end of the active noise reduction processing module is connected with the sound pressure level threshold on-off switch through an electric wire, and the other end of the active noise reduction processing module is connected with the loudspeaker 4 through an electric wire; specifically, the model of the active noise reduction processing module is CM2102S (DAC+DSP); when the active noise reduction processing module is connected with the pickup body 2 through a wire, the acquisition processing module of the pickup body 2 is used for processing sound to obtain a frequency signal and outputting the frequency signal to the sound pressure level threshold on-off switch, the active noise reduction processing module is used for acquiring the frequency signal output by the sound pressure level threshold on-off switch and outputting the frequency signal to the output processing module after comparing the frequency signal with a noise frequency signal preset in the active noise reduction processing module, wherein the active noise reduction processing module does not output a frequency signal higher than the noise frequency signal, and the arrangement of the active noise reduction processing module is beneficial to filtering environmental noise audio acquired by the pickup body 2 so as to reduce the influence of environmental noise on the explosion venting process of explosion venting personnel and improve the explosion venting safety.
In another technical scheme, the device further comprises a bass amplification enhancement module which is arranged on the pickup body 2, wherein one end of the bass amplification enhancement module is connected with the active noise reduction processing module through an electric wire, and the other end of the bass amplification enhancement module is connected with the loudspeaker 4 through an electric wire; specifically, the model of the bass amplifying and enhancing module is TDA1308, and the bass amplifying and enhancing module is configured to obtain a frequency signal output by the active noise reduction processing module and a sound pressure level signal corresponding to the frequency signal, and amplify the sound pressure level signal output by the active noise reduction processing module and output the amplified sound pressure level signal to the output processing module, so that after the active noise reduction processing module filters out ambient noise, the noise-reduced ambient audio can be reduced and amplified, and relatively low or abrupt sound can be enhanced, such as timer dripping sound, internal ignition sound, actuation sound of a remote control electrical switch and a magnetic attraction switch, and relatively weak sound related to explosion-release safety, so as to ensure that an explosion-release person can accurately hear abnormal sound inside the explosive in a closed explosion-release helmet and take countermeasures in time.
In another technical scheme, the explosion venting helmet further comprises a command communication audio module which is arranged at the top of the explosion venting helmet body 1, one end of the command communication audio module is connected with the loudspeaker 4 through a wire, and the other end of the command communication audio module is connected with a headset for a far-end commander in a wireless manner; specifically, the model of command communication audio module is SIP2701V, and the remote commander communicates with the explosive ordnance in the scene in real time through command communication audio module the headset that speaker 4 used is according to the headset that the remote commander used, and wherein, the headset that the remote commander used turns into electrical signal, magneto-electric wave signal, and rethread wireless connection transmits to command communication audio module on the explosive ordnance, command communication audio module receives the electromagnetic wave signal that the headset that the remote commander used transmitted and output, and transmits to speaker 4, by speaker 4 to explosive ordnance disposal personnel people ear transmission output sound.
Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (8)
1. Explosive-proof helmet with pick-up, noise reduction and sound wave impact prevention functions is characterized by comprising:
an explosion-proof helmet body;
The sound pick-up body is arranged on the outer side wall of the explosion-proof helmet body and is arranged close to the rear part of the head top part of the explosion-proof helmet body;
One end of the sound pressure level threshold on-off switch is connected to the pickup body through a wire;
The loudspeaker is arranged on the inner side wall of the explosion-proof helmet body and is close to the position where the human ears are close to, and the loudspeaker is connected with the other end of the sound pressure level threshold on-off switch through an electric wire.
2. The explosion-proof helmet with sound pickup, noise reduction and sound wave impact prevention functions according to claim 1, wherein the number of the sound pickup bodies and the number of the loudspeakers are two, and the two sound pickup bodies and the two loudspeakers are respectively and correspondingly arranged on the left outer side wall and the right outer side wall of the explosion-proof helmet body.
3. The explosion-proof helmet with the functions of sound pickup, noise reduction and sound wave impact prevention according to claim 2, wherein a flexible protective layer is arranged in the explosion-proof helmet body.
4. The explosion-proof helmet with sound pickup, noise reduction and sound wave impact prevention functions according to claim 3, wherein a pair of grooves are concavely formed on the flexible protective layer;
The two speakers are correspondingly arranged in the pair of grooves.
5. The explosion-proof helmet with sound pickup, noise reduction and sound wave impact prevention functions according to claim 4, wherein a sound-transmitting sponge layer is arranged on one side of the loudspeaker, which is away from the flexible protective layer.
6. The explosion-proof helmet with sound pickup, noise reduction and sound wave impact prevention functions according to claim 1, further comprising an active noise reduction processing module, wherein the active noise reduction processing module is arranged on the pickup body, one end of the active noise reduction processing module is connected with the sound pressure level threshold on-off switch through an electric wire, and the other end of the active noise reduction processing module is connected with the loudspeaker through an electric wire.
7. The explosion-proof helmet with sound pickup, noise reduction and sound wave impact prevention functions according to claim 6, further comprising a bass amplifying and enhancing module, wherein the bass amplifying and enhancing module is arranged on the sound pickup body, one end of the bass amplifying and enhancing module is connected with the active noise reduction processing module through a wire, and the other end of the bass amplifying and enhancing module is connected with the loudspeaker through a wire.
8. The explosion-proof helmet with sound pickup, noise reduction and sound wave impact prevention functions according to claim 1, further comprising a command communication audio module, wherein the command communication audio module is arranged at the top of the head of the explosion-proof helmet body, one end of the command communication audio module is connected with the loudspeaker through a wire, and the other end of the command communication audio module is connected with a headset for a far-end commander in a wireless mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322457051.4U CN220898053U (en) | 2023-09-11 | 2023-09-11 | Explosion-proof helmet with sound pickup, noise reduction and sound wave impact prevention functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322457051.4U CN220898053U (en) | 2023-09-11 | 2023-09-11 | Explosion-proof helmet with sound pickup, noise reduction and sound wave impact prevention functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220898053U true CN220898053U (en) | 2024-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322457051.4U Active CN220898053U (en) | 2023-09-11 | 2023-09-11 | Explosion-proof helmet with sound pickup, noise reduction and sound wave impact prevention functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220898053U (en) |
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2023
- 2023-09-11 CN CN202322457051.4U patent/CN220898053U/en active Active
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