阅读说明：本技术 一种随环境变化的报警器 (Alarm changing along with environment ) 是由 崔岳成 王晓 崔东辉 崔鲁合 肖娜 于 2021-08-23 设计创作，主要内容包括：本发明提供一种随环境变化的报警器,属于汽车技术领域,该随环境变化的报警器包括防护外壳,防护外壳内设置有警报组件,警报组件用于进行报警器的警报驱动,防护外壳的前侧设置有开关机构,开关机构便于对警报组件进行更换维护,防护外壳的两侧设置有安装机构,安装机构用于对防护外壳进行安装固定,安装机构与开关机构之间设置有连接机构,连接机构用于连接安装机构与开关机构,旨在解决现有技术中大部分的报警器通常是通过外侧的螺栓进行组装,在进行内部的检修与维护时不方便,另外大部分报警器输出时的频率为固定频率,不能够跟随环境变化发生改变,因此在实际应用方面容易产生一定的问题。(The invention provides an alarm changing with environment, belonging to the technical field of automobiles, comprising a protective shell, wherein an alarm component is arranged in the protective shell and used for carrying out alarm driving on the alarm, a switch mechanism is arranged at the front side of the protective shell and is convenient for replacing and maintaining the alarm component, mounting mechanisms are arranged at two sides of the protective shell and are used for mounting and fixing the protective shell, a connecting mechanism is arranged between the mounting mechanism and the switch mechanism and is used for connecting the mounting mechanism and the switch mechanism, aiming at solving the problems that in the prior art, most alarms are usually assembled through bolts at the outer side and are inconvenient to carry out internal maintenance, in addition, the frequency of most alarms output is fixed frequency and cannot change along with the change of the environment, therefore, a problem is likely to occur in practical use.)

1. The utility model provides an alarm along with environmental change, includes protective housing (1), its characterized in that: the alarm device is characterized in that an alarm assembly is arranged in the protective shell (1), the alarm assembly is used for alarm driving of an alarm, a switch mechanism is arranged on the front side of the protective shell (1), the switch mechanism is convenient to replace and maintain the alarm assembly, mounting mechanisms are arranged on two sides of the protective shell (1), the mounting mechanisms are used for fixedly mounting the protective shell (1), a connecting mechanism is arranged between the mounting mechanisms and the switch mechanism and used for connecting the mounting mechanisms and the switch mechanism, a heat dissipation mechanism is arranged at the lower end of the protective shell (1), and the heat dissipation mechanism is used for dissipating heat of the alarm assembly.

2. An environmentally variable alarm according to claim 1, wherein: the alarm assembly comprises a power supply module (101), an audio power amplification module (102), an MCU micro-central processing module (103), an audio processing module (104) and a sound receiving and transmitting device (105), wherein the power supply module (101), the audio power amplification module (102), the MCU micro-central processing module (103), the audio processing module (104) and the sound receiving and transmitting device (105) are all arranged in the protective shell (1), the power supply module (101) is electrically connected with an external power supply, the audio power amplification module (102), the MCU micro-central processing module (103) and the audio processing module (104) are all electrically connected with the power supply module (101), the MCU micro-central processing module (103) is electrically connected with the audio power amplification module (102), the MCU micro-central processing module (103) is electrically connected with the audio processing module (104), and the audio power amplification module (102) is electrically connected with the sound receiving and transmitting device (105), the sound receiving and transmitting device (105) is electrically connected with the audio processing module (104).

3. An environmentally variable alarm according to claim 2, wherein: the sound receiving and transmitting device (105) comprises a buzzing sound production module (1051) and a noise receiving module (1052).

4. An environmentally variable alarm according to claim 3, wherein: switch mechanism includes protective cover (2), protective cover (2) sliding connection is in the front side of protecting sheathing (1), the firm slider (201) of the equal fixedly connected with in both sides of protective cover (2), the both sides of protecting sheathing (1) are all excavated spacing spout (202), two firm slider (201) sliding connection respectively in two spacing spout (202).

5. An environmentally variable alarm according to claim 4 wherein: installation mechanism includes two sets of installation pieces (3), and is two sets of installation piece (3) articulate in the both sides of protecting sheathing (1) through the hinge activity respectively, and every group installation piece (3) be two, every group two equal fixedly connected with connecting rod (302) between installation piece (3), it is two sets of mounting hole (301) have all been dug to the rear end of installation piece (3).

6. An environmentally variable alarm according to claim 5, wherein: the connecting mechanism comprises two groups of fixing blocks (4), the two groups of fixing blocks (4) are respectively and fixedly connected with the two sides of the upper part of the protective shell (1), and each group of two fixing blocks (4) is provided, a screw (401) is rotationally connected between each two fixing blocks (4), the front ends of the two screws (401) respectively penetrate through the two fixing blocks (4) positioned at the front side, the front ends of the two screws (401) are fixedly connected with gears (402), both sides of the upper part of the protective cover (2) are fixedly connected with racks (403), and two racks (403) are respectively meshed with the two gears (402), the surfaces of the two screws (401) are respectively in threaded connection with stroke nuts (404), the upper ends of the two mounting blocks (3) positioned on the upper side are respectively in rotary connection with rotary columns (405), and the two rotary columns (405) are respectively in movable hinge connection with the two stroke nuts (404) to form folding connecting rods (406).

7. An environmentally variable alarm according to claim 6, wherein: the heat dissipation mechanism comprises a heat dissipation opening (5), the heat dissipation opening (5) is formed in the lower side of the protective shell (1), the heat dissipation opening (5) corresponds to the power module (101), a heat dissipation fan (501) is fixedly connected in the heat dissipation opening (5), and the heat dissipation fan (501) is electrically connected with the power module (101).

8. An environmentally variable alarm according to claim 7, wherein: the lower end of the protective shell (1) is fixedly connected with a protective screen (6), and the protective screen (6) corresponds to the cooling fan (501).

9. An environmentally variable alarm according to claim 8, wherein: the upside fixedly connected with pull handle (7) of protective cover (2), the front side of pull handle (7) is opened chisel and is had finger groove (8), the front side of protective cover (2) is provided with observation window (9).

10. An environmentally variable alarm according to claim 9, wherein: the upper end of the protective shell (1) is provided with a plurality of sound spreading holes (10) in a chiseling mode, and the sound spreading holes (10) correspond to the sound receiving and transmitting device (105).

Technical Field

The invention belongs to the technical field of automobiles, and particularly relates to an alarm changing along with environment.

Background

In the prior art, an alarm is an electronic product that reminds or warns people of taking some action in the form of sound, light, air pressure and the like in order to prevent or prevent the consequences caused by an event. The alarm comprises a mechanical alarm and an electronic alarm. With the progress of science and technology, mechanical alarms are increasingly replaced by advanced electronic alarms, are often applied to the fields of system faults, safety precaution, transportation, medical treatment and rescue, emergency relief, induction detection and the like, and are inseparable from social production.

At present, the alarm can be used frequently in the automotive filed, most alarms are assembled through bolts on the outer side generally, the inside overhaul and the maintenance are inconvenient, and the frequency when most alarms are output is fixed frequency and cannot be changed along with the environmental change, so that certain problems are easily caused in the aspect of practical application.

Disclosure of Invention

The invention aims to provide an alarm changing along with environment, and aims to solve the problems that in the prior art, most alarms are usually assembled through bolts on the outer side, the inside overhaul and maintenance are inconvenient, and in addition, the frequency of the output of most alarms is fixed and cannot be changed along with the environment change, so that certain problems are easily caused in the aspect of practical application.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an alarm along with environmental change, includes protective housing, be provided with the alarm subassembly in the protective housing, the alarm subassembly is used for carrying out the alarm drive of alarm, protective housing's front side is provided with switching mechanism, switching mechanism is convenient for change the maintenance to the alarm subassembly, protective housing's both sides are provided with installation mechanism, installation mechanism is used for installing protective housing fixedly, be provided with coupling mechanism between installation mechanism and the switching mechanism, coupling mechanism is used for connecting installation mechanism and switching mechanism, protective housing's lower extreme is provided with heat dissipation mechanism, heat dissipation mechanism is used for dispelling the heat to the alarm subassembly.

As a preferred scheme of the present invention, the alarm component includes a power module, an audio power amplification module, an MCU micro-central processing module, an audio processing module, and a sound transceiver, the power module, the audio power amplification module, the MCU micro-central processing module, the audio processing module, and the sound transceiver are all installed in the protective housing, the power module is electrically connected to an external power source, the audio power amplification module, the MCU micro-central processing module, and the audio processing module are all electrically connected to the power module, the MCU micro-central processing module is electrically connected to the audio power amplification module, the MCU micro-central processing module is electrically connected to the audio processing module, the audio power amplification module is electrically connected to the sound transceiver, and the sound transceiver is electrically connected to the audio processing module.

As a preferable scheme of the present invention, the transceiver includes a buzzer sound module and a noise receiving module.

As a preferable scheme of the invention, the switch mechanism comprises a protective cover, the protective cover is slidably connected to the front side of the protective shell, both sides of the protective cover are fixedly connected with stabilizing sliding blocks, both sides of the protective shell are respectively provided with a limiting sliding chute, and the two stabilizing sliding blocks are respectively slidably connected in the two limiting sliding chutes.

As a preferred scheme of the invention, the mounting mechanism comprises two groups of mounting blocks, the two groups of mounting blocks are respectively and movably hinged on two sides of the protective shell through hinge shafts, each group of mounting blocks is two, a connecting rod is fixedly connected between the two mounting blocks of each group, and mounting holes are drilled at the rear ends of the two groups of mounting blocks.

As a preferred scheme of the invention, the connecting mechanism comprises two groups of fixed blocks, the two groups of fixed blocks are respectively and fixedly connected to two sides of the upper part of the protective shell, each group of two fixed blocks is provided with two fixed blocks, a screw rod is rotatably connected between the two fixed blocks of each group, the front ends of the two screw rods respectively penetrate through the two fixed blocks positioned on the front side, the front ends of the two screw rods are respectively and fixedly connected with a gear, two sides of the upper part of the protective cover are respectively and fixedly connected with a rack, the two racks are respectively meshed with the two gears, the surfaces of the two screw rods are respectively and threadedly connected with a stroke nut, the upper ends of the two mounting blocks positioned on the upper side are respectively and rotatably connected with a rotary column, and a folding connecting rod is movably hinged between the two rotary columns and the two stroke nuts.

As a preferred aspect of the present invention, the heat dissipation mechanism includes a heat dissipation opening, the heat dissipation opening is cut at a lower side of the protective housing, and the heat dissipation opening corresponds to the power module, the heat dissipation opening is internally and fixedly connected with a heat dissipation fan, and the heat dissipation fan is electrically connected to the power module.

As a preferred scheme of the present invention, the lower end of the protective casing is fixedly connected with a protective screen plate, and the protective screen plate corresponds to the heat dissipation fan.

In a preferred aspect of the present invention, a pull handle is fixedly connected to an upper side of the protective cover, a finger groove is formed in a front side of the pull handle, and an observation window is disposed in a front side of the protective cover.

As a preferable aspect of the present invention, the upper end of the protective casing is perforated with a plurality of sound diffusing holes, and the plurality of sound diffusing holes correspond to the sound receiving and emitting device.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, when the alarm needs to be used, the switch mechanism is closed and installed on the alarm component in the protective shell by closing the switch mechanism, the installation mechanism can be unfolded by the connecting mechanism when the switch mechanism is closed, then the protective shell is installed on a vehicle by the installation mechanism, the switch mechanism is limited by the connecting mechanism after the installation mechanism is fixed, so that the switch mechanism cannot be opened, the installation mechanism and the switch mechanism are in a fixed state, then the alarm component is started by an external power supply, the alarm component carries out noise detection and collection, the alarm component can send out different buzzing alarms according to noise information, meanwhile, the heat dissipation mechanism can also be started, the heat dissipation of the alarm component is accelerated by the heat dissipation mechanism, and the service life of the alarm component is effectively prolonged.

2. According to the invention, the mounting mechanism and the switch mechanism are mutually matched and fixed through the connecting mechanism, so that the fixing effect is good, the alarm assembly in the protective shell can be effectively prevented from being influenced by external factors during use, when the alarm assembly needs to be overhauled and maintained, the mounting mechanism and the vehicle body are disassembled, the switch mechanism is not limited after the mounting mechanism is disassembled, and the alarm assembly in the protective shell can be quickly overhauled and maintained by opening the switch mechanism.

3. In the invention, when the alarm component is used, the power supply module provides ripple-free linear current for the audio power amplification module, the MCU micro central processing module and the audio processing module, the sound receiving and transmitting device collects external noise, the collected noise is processed by the audio processing module and converted into an electric signal which is sent to the MCU micro central processing module, the MCU micro central processing module calculates the noise electric signal of the audio processing module, the calculated audio electric signal is output to the audio power amplification module for amplification, the audio power amplification module drives the sound receiving and transmitting device to emit buzzing sound meeting the sound pressure level for alarming, the sound sampling and sound output in the alarm adopt the same sound receiving and transmitting device which can collect the noise of all frequencies, the sound pressure level of the buzzing sound output by the sound receiving and transmitting device is higher than the sound pressure level of the collected noise by five decibels, therefore, the output buzzing sound of the sound receiving and transmitting device can be automatically adjusted according to the change of the external environment.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a front view of the present invention;

FIG. 2 is a first elevational view of the present invention;

FIG. 3 is a second elevational view of the present invention;

FIG. 4 is an exploded view of the present invention;

FIG. 5 is an elevational view of a portion of the structure of the present invention;

FIG. 6 is a front cross-sectional view of the present invention;

FIG. 7 is a block flow diagram of the present invention;

FIG. 8 is a block flow diagram of a portion of the architecture of the present invention.

In the figure: 1. a protective housing; 101. a power supply module; 102. an audio power amplification module; 103. MCU micro central processing module; 104. an audio processing module; 105. a transceiver device; 1051. a buzzing and sounding module; 1052. a noise receiving module; 2. a protective cover; 201. a stable sliding block; 202. a limiting chute; 3. mounting blocks; 301. mounting holes; 302. a connecting rod; 4. a fixed block; 401. a screw; 402. a gear; 403. a rack; 404. a travel nut; 405. turning the column; 406. folding the connecting rod; 5. a heat dissipation port; 501. a heat radiation fan; 6. a protective mesh plate; 7. a pull handle; 8. a finger groove; 9. an observation window; 10. and (4) a sound diffusion hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Examples

Referring to fig. 1-8, the present invention provides the following technical solutions:

the utility model provides an alarm along with environmental change, including protective housing 1, be provided with the alarm subassembly in protective housing 1, the alarm subassembly is used for carrying out the alarm drive of alarm, protective housing 1's front side is provided with switching mechanism, switching mechanism is convenient for change the maintenance to the alarm subassembly, protective housing 1's both sides are provided with installation mechanism, installation mechanism is used for installing fixedly protective housing 1, be provided with coupling mechanism between installation mechanism and the switching mechanism, coupling mechanism is used for connecting installation mechanism and switching mechanism, protective housing 1's lower extreme is provided with heat dissipation mechanism, heat dissipation mechanism is used for dispelling the heat to the alarm subassembly.

In the embodiment of the invention, when the alarm needs to be used, the switch mechanism is closed to install the alarm component in the protective shell 1 by closing the switch mechanism, the mounting mechanism is unfolded by the connecting mechanism when the switch mechanism is closed, then the protective shell 1 is mounted on the vehicle by the mounting mechanism, the switch mechanism is limited by the connecting mechanism after the mounting mechanism is fixed, so that the switch mechanism can not be opened, the mounting mechanism and the switch mechanism are in a fixed state, then the alarm component is started by an external power supply, the alarm component carries out noise detection and collection, the alarm component can give out different buzzing alarms according to noise information, the heat dissipation mechanism is also started, the heat dissipation mechanism accelerates the heat dissipation of the alarm component, the service life of the alarm component is effectively prolonged, and the mounting mechanism and the switch mechanism are mutually matched and fixed by the connecting mechanism, not only fixed effectual, can effectually prevent in addition that external factor from influencing the alarm subassembly in protective housing 1 when using, when needs overhaul and maintain the alarm subassembly, through dismantling between installation mechanism and the automobile body, installation mechanism dismantles the back and does not restrict switching mechanism, and through opening switching mechanism this moment, can carry out quick maintenance and maintenance to the inside alarm subassembly of protective housing 1.

Specifically, the alarm component includes a power module 101, an audio power amplification module 102, an MCU micro-cpu 103, an audio processing module 104 and a sound transceiver 105, the power module 101, the audio power amplification module 102, the MCU micro-cpu 103, the audio processing module 104 and the sound transceiver 105 are all installed in the protective housing 1, the power module 101 is electrically connected to an external power source, the audio power amplification module 102, the MCU micro-cpu 103, the audio processing module 104 are electrically connected to the power module 101, the MCU micro-cpu 103 is electrically connected to the audio power amplification module 102, the MCU micro-cpu 103 is electrically connected to the audio processing module 104, the audio power amplification module 102 is electrically connected to the sound transceiver 105, and the sound transceiver 105 is electrically connected to the audio processing module 104.

In the specific embodiment of the present invention, when the alarm component is in use, the power module 101 provides a ripple-free linear current for the audio power amplification module 102, the MCU micro-cpu 103 and the audio processing module 104, the transceiver 105 collects external noise, the collected noise is processed by the audio processing module 104 and converted into an electrical signal, the electrical signal is sent to the MCU micro-cpu 103, the MCU micro-cpu 103 computes the noise electrical signal of the audio processing module 104, and then outputs the computed audio electrical signal to the audio power amplification module 102 for amplification, the audio power amplification module 102 drives the transceiver 105 to emit a buzzer meeting a sound pressure level for alarm, the same transceiver 105 is used for sound sampling and sound output in the alarm, the transceiver 105 can collect noise of all frequencies, the sound pressure level of the buzzer output by the transceiver 105 is higher than the sound pressure level of the collected noise by five decibels, therefore, the output buzzing sound of the transceiver device 105 can be automatically adjusted according to the external environment.

Specifically, the transceiver 105 includes a buzzer sound module 1051 and a noise receiving module 1052.

In an embodiment of the present invention, the sound pressure level of the buzzing sound module 1051 is five decibels higher than the sound pressure level of the noise receiving module 1052, the buzzing sound module 1051 outputs a fixed-frequency buzzing sound, and the noise receiving module 1052 can collect noise of all frequencies.

Specifically, the switch mechanism includes protective cover 2, and 2 sliding connection of protective cover are in protective housing 1's front side, and the equal fixedly connected with in both sides of protective cover 2 stabilizes slider 201, and protective housing 1's both sides are all excavated spacing spout 202, and two stabilize slider 201 are sliding connection respectively in two spacing spouts 202.

In the embodiment of the present invention, the protecting cover 2 is slidably connected to the front side of the protecting casing 1 through the sliding connection between the two stable sliding blocks 201 and the two limiting sliding grooves 202, the protecting casing 1 is opened by pulling the protecting cover 2 upwards, the maintenance of the alarm component in the protecting casing 1 can be facilitated, and when the protecting cover 2 is closed, the protecting cover 2 can unfold the mounting mechanism through the connecting mechanism.

Specifically, installation mechanism includes two sets of installation pieces 3, and two sets of installation pieces 3 articulate in the both sides of protecting sheathing 1 through the hinge activity respectively, and every group installation piece 3 be two, equal fixedly connected with connecting rod 302 between two installation pieces 3 of every group, and the rear end of two sets of installation pieces 3 has all been dug mounting hole 301.

In the embodiment of the present invention, when the protecting cover 2 is in the open state, the two sets of mounting blocks 3 are in the folded state through the two connecting rods 302 and the connecting mechanism, and when the protecting cover 2 is in the closed state, the two sets of mounting blocks 3 are in the unfolded state through the two connecting rods 302 and the connecting mechanism, and the two sets of mounting blocks 3 after being unfolded can be mounted in the vehicle through the plurality of mounting holes 301 and the bolts.

Specifically, coupling mechanism includes two sets of fixed blocks 4, two sets of fixed blocks 4 are fixed connection in the upper portion both sides of protecting sheathing 1 respectively, and every fixed block 4 of group is two, all rotate between two fixed blocks 4 of every group and be connected with screw rod 401, and two fixed blocks 4 that are located the front side are run through respectively to the front end of two screw rods 401, the equal fixedly connected with gear 402 in front end of two screw rods 401, the equal fixedly connected with rack 403 in upper portion both sides of protective cover 2, and two rack 403 mesh with two gear 402 respectively, the equal threaded connection in surface of two screw rods 401 has stroke nut 404, the upper end of two installation pieces 3 that are located the upside all rotates and is connected with rotary column 405, two rotary column 405 respectively with two stroke nut 404 between the activity hinge have folding connecting rod 406.

In the embodiment of the invention, when the protective cover 2 moves upwards and is opened, the two racks 403 can respectively drive the two gears 402 to rotate, the two gears 402 respectively rotate the two screws 401 through the two groups of fixing blocks 4, the two screws 401 enable the two stroke nuts 404 to move backwards, the two stroke nuts 404 respectively expand the two groups of mounting blocks 3 through the folding connecting rod 406 and the two rotating columns 405, the two groups of mounting blocks 3 are fixedly mounted in a vehicle through the mounting holes 301 and the bolts, at the moment, the protective cover 2 cannot move and is limited, the protective cover 2 cannot move by fixing one mounting mechanism, the protective cover 2 can conveniently protect the structure in the protective housing 1, and after the two groups of mounting blocks 3 are detached from the vehicle body, the opening and closing mechanism can be opened again.

Specifically, the heat dissipation mechanism includes a heat dissipation opening 5, the heat dissipation opening 5 is cut on the lower side of the protective housing 1, the heat dissipation opening 5 corresponds to the power module 101, a heat dissipation fan 501 is fixedly connected in the heat dissipation opening 5, and the heat dissipation fan 501 is electrically connected with the power module 101.

In the embodiment of the present invention, when the alarm device is used, a certain amount of heat is generated, the power module 101 may start the heat dissipation fan 501, and the heat dissipation fan 501 may rapidly discharge the heat of the alarm device through the heat dissipation opening 5, thereby prolonging the service life of the alarm device.

Specifically, the lower end of the protective housing 1 is fixedly connected with a protective screen 6, and the protective screen 6 corresponds to the heat dissipation fan 501.

In the embodiment of the present invention, the protection screen 6 has a certain dustproof effect, and can protect the heat dissipation fan 501 without affecting the heat dissipation process of the heat dissipation opening 5.

Specifically, the upper side of the protecting cover 2 is fixedly connected with a pulling handle 7, a finger groove 8 is chiseled at the front side of the pulling handle 7, and an observation window 9 is arranged at the front side of the protecting cover 2.

In the embodiment of the present invention, the pulling of the protecting cover 2 is facilitated by the pulling handle 7 and the finger groove 8, and the viewing window 9 facilitates the viewing of the components inside the protecting cover 1.

Specifically, the upper end of the protective casing 1 is perforated with a plurality of sound emission holes 10, and the plurality of sound emission holes 10 correspond to the sound receiving/emitting device 105.

In the embodiment of the present invention, the collection of noise and the output of the buzzer sound by the sound emitting/receiving device 105 can be facilitated by the plurality of sound emitting holes 10.

The working principle and the using process of the invention are as follows: when the alarm needs to be used, the switch mechanism is closed to install the alarm component in the protective shell 1, when the switch mechanism is closed, the installation mechanism is unfolded through the connecting mechanism, then the protective shell 1 is installed on a vehicle through the installation mechanism, after the installation mechanism is fixed, the switch mechanism is limited through the connecting mechanism, so that the switch mechanism cannot be opened, the installation mechanism and the switch mechanism are in a fixed state, then the alarm component is started through an external power supply, the noise detection and collection are carried out on the alarm component, when the alarm component is used, the power supply module 101 provides ripple-free linear current for the audio power amplification module 102, the MCU micro-central processing module 103 and the audio processing module 104, the transceiver 105 collects external noise, the collected noise is processed through the audio processing module 104 and converted into an electric signal to be sent to the MCU micro-central processing module 103, the MCU micro central processing module 103 calculates the noise electric signal of the audio processing module 104, and then outputs the calculated audio electric signal to the audio power amplifying module 102 for amplifying, the audio power amplifying module 102 drives the sound receiving and transmitting device 105 to send out buzzing sound meeting the sound pressure level for alarming, the sound sampling and sound output in the alarm adopt the same sound receiving and transmitting device 105, the sound receiving and transmitting device 105 can collect the noise of all frequencies, the sound pressure level of the buzzing sound output by the sound receiving and transmitting device 105 is higher than the sound pressure level of the collected noise by five decibels, therefore, the buzzing sound output by the sound receiving and transmitting device 105 can automatically adjust the volume according to the external environment change, different buzzing alarms can be sent out according to the noise information alarm component, meanwhile, the heat dissipation mechanism can also be started, the heat dissipation mechanism speeds up the heat dissipation of the alarm component, and the service life of the alarm component is effectively prolonged, when needs overhaul and maintain the alarm subassembly, through dismantling between installation mechanism and the automobile body, installation mechanism dismantles the back and does not restrict switching mechanism, and through opening switching mechanism this moment, can carry out quick maintenance to the alarm subassembly of protective housing 1 inside.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.