CN106973345A - A kind of police car Special flexible multifunctional acoustic wave defence equipment and control method - Google Patents
A kind of police car Special flexible multifunctional acoustic wave defence equipment and control method Download PDFInfo
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- CN106973345A CN106973345A CN201710361125.0A CN201710361125A CN106973345A CN 106973345 A CN106973345 A CN 106973345A CN 201710361125 A CN201710361125 A CN 201710361125A CN 106973345 A CN106973345 A CN 106973345A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
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- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
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- Acoustics & Sound (AREA)
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- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The present invention relates to a kind of police car Special flexible multifunctional acoustic wave defence equipment and control method.The equipment is arranged on police car and powered by police car vehicle power, including computer, power amplifier, camera, single-chip microcomputer and multiple transducers, camera is connected with computer, computer is connected with single-chip microcomputer, single-chip microcomputer is connected with multiple metal-oxide-semiconductors, each metal-oxide-semiconductor is connected after a transducer formation transducer array parallel with one another again respectively, and transducer array is in parallel with power amplifier again to form sound wave defence device, and sound wave defence device is distributed in the both sides of camera.The present invention can be according to where dispersing target azimuth-range, adjustment acoustic emission direction and maximum sound pressure level, the function with flexible combination, the electric energy usage amount reduction for equipping sound wave defence.Warning lamp on casing not only has alarm function, also with lightweight, small volume the characteristics of, make police car that there is the function of reducing air drag, reduce police car fuel consumption in the process of moving.
Description
Technical field
The present invention relates to strong sound denial equipment technical field, specifically, refer to a kind of police car Special flexible Multi-functional sound
Ripple defence equipment and control method.
Background technology
Sound wave defence equipment be a kind of sound directional transmissions equipment, can realize propaganda directed to communicate, alert at a distance, deterring function,
Can be extremely remote, or even pass through some buildings and transmit extraordinary clear sound effect.Sound wave defence equipment difference
In traditional acoustic wave device, with directive property is strong, operating distance is remote, high sound pressure level and using it is safe the features such as, ensure that
While the validity and accuracy of remote sound transmission, the non-security for dispersing target group also ensure that.
In the prior art, people generally equip sound wave defence installed in the top of police car, and being equipped in sound wave defence makes
Used time can reach the anti-probably purpose such as stability maintenance, area outlook, law enforcement, protection, but vehicle-mounted sound wave defence equipment of the prior art
During work, whole transducers for being installed are always while use, simultaneously close off, and orientation that can not be according to where dispersing target
With the distance for dispersing target range, come carry out transducer flexible combination work so that the electric energy usage amount of vehicle power is big
Width increase.And vehicle-mounted sound wave defence equipment overall weight of the prior art is big, volume is big, and structure design is unreasonable, so that
Make police car in the process of moving, when especially running at high speed, produce very big air drag, be unfavorable for consuming during police car traveling
The reduction of oil mass.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of police car Special flexible multifunctional acoustic wave defence equipment and controlled
Method processed, makes orientation and disperse the distance of target range that sound wave defence equipment can be according to where dispersing target, to be changed
The flexible combination work of energy device, so that sound wave defence equipment can be adjusted to the direction of the launch and maximum sound pressure level of sound wave
It is whole, to reach the purpose of the electric energy usage amount that while target is dispersed sound wave defence can equip reduction again.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of police car Special flexible multifunctional acoustic wave defence dress
It is standby, its be arranged on police car on and powered by police car vehicle power, including computer, with attack sound or MP3 audio input ports
Power amplifier, camera, single-chip microcomputer and multiple transducers, the camera is connected with computer, computer and monolithic
Machine is connected, and single-chip microcomputer is connected with multiple metal-oxide-semiconductors, and each metal-oxide-semiconductor is connected after a transducer respectively, and formation parallel with one another is changed again
Energy device array, transducer array is in parallel with power amplifier again to form sound wave defence device, and sound wave defence device is distributed in the two of camera
Side.
The beneficial effects of the invention are as follows：Camera collection disperses target image and sends image information to computer, meter
Calculation machine according to image information obtain dispersing target on the left of police car or right side azimuth information and obtain police car with dispersing
The distance between target information, and generate operating transducers sequence number and send to single-chip microcomputer, single-chip microcomputer is according to operating transducers sequence number
In the break-make of azimuth information control metal-oxide-semiconductor determine on the left of camera the sound wave defence device work on the right side of either camera,
And range information of the single-chip microcomputer in operating transducers sequence number controls the break-make of metal-oxide-semiconductor to determine transducing in sound wave defence device
The work number of device, to adjust acoustic emission direction and the maximum sound pressure level of sound wave defence equipment, so that sound wave defence is equipped
Electric energy usage amount reduction.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, in addition to integrally formed casing and bottom plate, provided with camera mounting hole and transducer positioning hole before
Panel and the rear board provided with cable hole, between transducer array and the camera plate forward-mounted and rear board, and
And front panel is arranged on the front of casing, rear board is arranged on the back side of casing.
Beneficial effect using above-mentioned further scheme is：Casing, bottom plate, front panel and rear board can be to cameras
Play a part of being connected with transducer array, protect, the cable hole on rear board is easy to the power line of camera, signal wire
And the power line of transducer concentrates merger, so as to ensure the attractive in appearance of police car.
Further, the top of the casing is provided with warning lamp support, is provided with warning lamp support and uses high-brightness LED lamp
The warning lamp being made.
Beneficial effect using above-mentioned further scheme is：The characteristics of high-brightness LED lamp has energy-conservation, service life is long, adopts
The warning lamp being made of high-brightness LED lamp contributes to police car to run over compared to the warning lamp of traditional police car, lightweight, small volume
Cheng Zhong, when especially running at high speed, reduces air drag, reduces the fuel consumption of police car.
Further, it is additionally provided with reinforcer between the casing and bottom plate.
Beneficial effect using above-mentioned further scheme is：The connection that reinforcer can strengthen between casing and bottom plate is strong
Degree, during the traveling of police car, be conducive to weakening sound wave defence equipment due to the vibration that center of gravity height is brought it is big the problem of.
Further, the material of the casing, bottom plate, front panel and rear board is aluminium alloy.
Beneficial effect using above-mentioned further scheme is：Aluminium alloy density is low, intensity is high, can ensure sound wave defence
While equipment configuration resistance to overturning, mitigate the overall weight of sound wave defence equipment, so that further reduction police car is run over
Fuel consumption in journey.
Further, provided with the perpendicular support member of rear board cross support and rear board between the casing and rear board, and
Rear board and rear board cross support, rear board set rubber strip between erecting support member.
Beneficial effect using above-mentioned further scheme is：Rear board cross support is erected behind support member convenience with rear board
Plate is arranged on casing, and rubber strip has sealing, the effect of buffering, be ensure that sound wave defence equipment is more accurate, is reduced
Transducer rocking in casing.
Further, the guard of stainless steel is additionally provided with the outside of the front panel.
Beneficial effect using above-mentioned further scheme is：Guard can avoid transducer exposure outside, and contribute to
Ensure the cleaning of transducer, so as to play a part of protecting inner transducer.
The present invention also provides a kind of control method of police car Special flexible multifunctional acoustic wave defence equipment, including following step
Suddenly：
S1. the image of target is dispersed in camera collection, and is generated image information and sent to computer；
S2. computer according to image information obtain dispersing target relative to the azimuth information of police car and disperse target and police car it
Between range information, and generate operating transducers sequence number and send to single-chip microcomputer；
S3. single-chip microcomputer controls the break-make of corresponding metal-oxide-semiconductor according to operating transducers sequence number, to determine the sound on the left of camera or right side
The number of transducer in the sound wave defence device whether ripple defence device works and work.
Beneficial effect using above-mentioned further scheme is：Camera collection disperses target image and sends image information
To computer, computer according to image information obtain dispersing target on the left of police car or right side azimuth information and obtain
Police car is sent to single-chip microcomputer with dispersing the distance between target information, and generating operating transducers sequence number, and single-chip microcomputer is according to work
Azimuth information in transducer sequence number controls the break-make of metal-oxide-semiconductor to determine that the sound wave on the left of camera or on the right side of camera is refused
Only device works, and range information of the single-chip microcomputer in operating transducers sequence number controls the break-make of metal-oxide-semiconductor to determine that sound wave is refused
Only in device transducer work number, with adjust sound wave defence equipment acoustic emission direction and maximum sound pressure level so that sound
The electric energy usage amount reduction of ripple defence equipment.
Further, the array transducers in the sound wave defence device work for the row rectangle battle array of 2 row 4, and sound wave defence device
Pattern is that 4 transducers work simultaneously or 6 transducers work simultaneously or 8 transducers work simultaneously.
Beneficial effect using above-mentioned further scheme is：
When transducer work number is 4 in sound wave defence device, the maximum sound pressure level of sound wave defence equipment is 144 decibels, is fitted
Dispersed for target closely；Or
When transducer work number is 6 in sound wave defence device, the maximum sound pressure level of sound wave defence equipment is 148 decibels, is fitted
Target for middle distance is dispersed；Or
When transducer work number is 8 in sound wave defence device, the maximum sound pressure level of sound wave defence equipment is 150 decibels, is fitted
Dispersed for remote target.
Further, the single-chip microcomputer controls the break-make of metal-oxide-semiconductor according to operating transducers sequence number, with the following manner：
When dispersing the distance between target and police car less than 40 meters, the transducer work number in sound wave defence device is 4；Or
When to disperse the distance between target and police car be 40 meters to 76 meters, the transducer work number in sound wave defence device is 6；
Or
When dispersing the distance between target and police car more than 76 meters, the transducer work number in sound wave defence device is 8.
Beneficial effect using above-mentioned further scheme is：When the sound wave defence device using the row rectangle battle array of 2 row 4, disperse
When closely, to disperse the distance between target and police car being 40 meters to 76 meters when the distance between target and police car are less than 40 meters
It is remote when dispersing the distance between target and police car more than 76 meters for middle distance, is dispersed so as to enable the invention to basis
The distance of target adjusts the maximum sound pressure level of acoustic emission.
The present invention has an advantageous effect in that relative to prior art：The present invention can be according to where dispersing target side
Position and distance, the acoustic emission direction of adjustment sound wave defence equipment and maximum sound pressure level, the function with flexible combination, make sound wave
The electric energy usage amount reduction of defence equipment.And the warning lamp on casing not only has alarm function, compared to traditional warning
Lamp, also with lightweight, small volume the characteristics of, police car is had in the process of moving and reduce air drag, reduce police car oil consumption
The function of amount.
Brief description of the drawings
Structural representations of the Fig. 1 for the present invention on police car；
Fig. 2 is positive overall structure diagram of the invention；
Fig. 3 removes the structural representation of guard for the present invention；
Fig. 4 is the overall structure diagram at the back side of the present invention；
Fig. 5 removes the structural representation of rear board for the present invention；
Fig. 6 is the structural representation of front panel；
Fig. 7 is the structural representation of rear board；
Fig. 8 is the structural representation of bottom plate；
Fig. 9 is the structural representation of transducer；
Figure 10 is control method schematic diagram of the invention.
In accompanying drawing, the list of parts representated by each label is as follows：
1st, casing, 2, reinforcer, 3, bottom plate, 4, front panel, 5, camera, 6, camera bearing, 7, guard, 8, warning lamp branch
Frame, 9, warning lamp, 10, a transducers, 11, b transducers, 12, c transducers, 13, d transducers, 14, e transducers, 15, f transducings
Device, 16, g transducers, 17, h transducers, 18, guard assembling auxiliary member, 19, rear board, 20, rear board cross support, 21, after
Panel erects support member, and 22, camera mounting hole, 23, mounting hole before transducer, 24, transducer positioning hole, 25, rear board installs
Hole, 26, mounting hole after transducer, 27, cable hole, 28, bottom plate mounting hole.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
Embodiment 1：
A kind of police car Special flexible multifunctional acoustic wave defence equipment, as shown in figure 1, it is arranged on police car and by police car vehicle mounted electric
Source powers, as shown in Figure 2 and Figure 3, and it includes computer, the power amplifier with attack sound or MP3 audio input ports, had
Camera 5, single-chip microcomputer and a transducers 10, b transducers 11, c transducers 12, d transducers 13, the e transducings of image collecting function
Device 14, f transducers 15, g transducers 16, h transducers 17, as shown in Figure 10, camera 5 is connected with computer, computer with
Single-chip microcomputer is connected, and single-chip microcomputer is connected with multiple metal-oxide-semiconductors, each metal-oxide-semiconductor respectively with a transducers 10, b transducers 11, c transducers
12nd, formation parallel with one another is changed again after d transducers 13, e transducers 14, f transducers 15, g transducers 16, h transducers 17 are connected
Energy device array, transducer array is in parallel with power amplifier again to form sound wave defence device, and sound wave defence device is distributed in a left side for camera 5
Side, similarly, structure identical sound wave defence device, and the sound wave defence device on left side and right side is also provided with the right side of camera 5
Share a power amplifier and power supply etc..
The present invention operation principle be：The collection of camera 5 disperses target image and sends image information to computer, meter
Calculation machine according to image information judge disperse target positioned at police car left side or right side this azimuth information, and judge police car with
The distance between target information is dispersed, and generates the operating transducers sequence number being made up of azimuth information and range information and is sent to list
Piece machine, azimuth information of the single-chip microcomputer in operating transducers sequence number controls the break-make of metal-oxide-semiconductor to determine the sound in the left side of camera 5
Ripple defence device works, or the sound wave defence device on the right side of camera 5 works, and single-chip microcomputer is according in operating transducers sequence number
The break-make of range information control metal-oxide-semiconductor determine the work number of transducer in sound wave defence device, to adjust sound wave defence dress
Standby acoustic emission direction and maximum sound pressure level, so that the electric energy usage amount reduction of sound wave defence equipment.
Above-mentioned single-chip microcomputer determines the work number of transducer in sound wave defence device by controlling metal-oxide-semiconductor, with the following group
Conjunction mode：
（1）A transducers 10, b transducers 11, h transducers 17, g transducers 16；Or
（2）B transducers 11, c transducers 12, g transducers 16, f transducers 15；Or
（3）C transducers 12, d transducers 13, e transducers 14, f transducers 15；Or
（4）A transducers 10, b transducers 11, c transducers 12, f transducers 15, g transducers 16, h transducers 17；Or
（5）B transducers 11, c transducers 12, d transducers 13, e transducers 14, f transducers 15, g transducers 16；Or
（6）A transducers 10, b transducers 11, c transducers 12, d transducers 13, e transducers 14, f transducers 15, g transducers 16,
H transducers 17.
It is above-mentioned（1）、（2）、（3）Worked simultaneously for 4 transducers, the maximum sound pressure level of sound wave defence device is 144 decibels, is fitted
Used in dispersing when the distance between target and police car are less than 40 meters；（4）、（5）Worked simultaneously for 6 transducers, sound wave defence
The maximum sound pressure level of device is 148 decibels, suitable for disperse the distance between target and police car for 40 meters to 76 meters when use；（6）For 8
Individual transducer works simultaneously, and the maximum sound pressure level of sound wave defence device is 150 decibels, suitable for dispersing the distance between target and police car
Used during more than 76 meters.
Therefore, the present invention has the feature of flexible group battle array, can adjust sound wave hair according to the azimuth-range for dispersing target
The direction penetrated and maximum sound pressure level, so that the electric energy usage amount reduction of sound wave defence equipment.
As shown in Fig. 2 to Fig. 9, for the ease of the implementation of the present invention, in addition to integrally formed casing 1 and bottom plate 3, it is provided with
Rear board 19 of the camera mounting hole 22 with the front panel 4 of transducer positioning hole 24 and provided with cable hole 27, bottom plate 3 carries arc
Shape structure, and the radian of bottom plate 3 can be fitted with the roof arcuate structure of police car, and bottom plate mounting hole 28 is provided with bottom plate 3,
Bottom plate 3 is arranged on police car roof through bottom plate mounting hole 28 using screw, reinforcer 2 is welded between casing 1 and bottom plate 3.
Circumference of the transducer front face along transducer positioning hole 24 is evenly distributed with 4 holes, sets relative with this 4 holes on front panel 4
Mounting hole 23 before the transducer answered, blending bolt on transducer plate 4 forward-mounted, will make transducer be positioned at transducer positioning
In hole 24, because the spacing between transducer positioning hole 24 on front panel 4 is too small, it can be cut before processing during panel 4 using water
Method is cut, to avoid the thermal deformation that other processing methods are brought, in addition, being also welded with guard assembling auxiliary in the front of front panel 4
Guard 7 is installed on part 18, guard assembling auxiliary member 18.There is 1 hole at the transducer back side, is set and this 1 on plate 19 below
Mounting hole 26 after the corresponding transducer in hole, and transducer is arranged on rear board 19 with screw.At camera mounting hole 22
Camera bearing 6 is welded with, camera 5 is arranged in camera bearing 6, and positions fixation by camera mounting hole 22.Before
Panel 4 is arranged on the front of casing 1, and rear board 19 is arranged on the back side of casing 1, rear board horizontal support is welded with casing 1
Part 20 erects support member 21 with rear board, and is erected in plate cross support 20 below and rear board on support member 21 provided with rear board peace
Hole 25 is filled, rear board 19 is arranged on rear board cross support 20 by screw and erected with rear board on support member 21, in plate 19 below
Rubber strip is added between erecting support member 21 with rear board cross support 20, rear board.Said machine casing 1, bottom plate 3, front panel 4 and
The material of rear board 19 is aluminium alloy, and the material of guard 7 is stainless steel.
As shown in Figures 1 to 9, the top of casing 1 leads to provided with 4 warning lamp supports 8, and warning lamp support 8 with casing 1
Cross the strip warning lamp 9 for being provided with and being made of high-brightness LED lamp on mode connects for screw, each two warning lamp support 8, warning lamp 9
Using high-brightness LED lamp, it can realize that red blue light alternately flashes, not only act as warning function, also solved traditional warning lamp stupid
Weight, bulky shortcoming.Warning lamp 9, the power line of camera 5 and sound wave defence device, signal wire are by rear board 19
Cable hole 27 concentrate merger, it is ensured that the aesthetic property of police car.
Embodiment 2：
A kind of control method of police car Special flexible multifunctional acoustic wave defence equipment, using the array transducers in sound wave defence device as
Exemplified by the row rectangle battle array of 2 row 4, as shown in Figure 10, comprise the following steps：
S1. the image of target is dispersed in camera collection, and is generated image information and sent to computer；
S2. computer according to image information obtain dispersing target relative to the azimuth information of police car and disperse target and police car it
Between range information, and generate operating transducers sequence number and send to single-chip microcomputer；
S3. single-chip microcomputer controls the break-make of corresponding metal-oxide-semiconductor according to operating transducers sequence number, to determine the sound on the left of camera or right side
The work number of transducer in the work of ripple defence device and sound wave defence device.
In step S3, single-chip microcomputer determines the work number of transducer in sound wave defence device by controlling the break-make of metal-oxide-semiconductor,
Including in the following manner：
When dispersing the distance between target and police car and being less than 40 meters, transducer work number is 4, sound wave defence device it is most loud
Arbitrarily downgrade as 144 decibels；Or
When to disperse the distance between target and police car be 40 meters to 76 meters, transducer work number is 6, and sound wave defence device is most
Sound pressure level is 148 decibels；Or
When dispersing the distance between target and police car and being more than 76 meters, transducer work number is 8, sound wave defence device it is most loud
Arbitrarily downgrade as 150 decibels.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. a kind of police car Special flexible multifunctional acoustic wave defence equipment, it is arranged on police car and powered by police car vehicle power,
It is characterized in that：Power amplifier, camera including computer, with attack sound or MP3 audio input ports（5）, single-chip microcomputer
And multiple transducers, the camera（5）It is connected with computer, computer is connected with single-chip microcomputer, single-chip microcomputer is connected with
Multiple metal-oxide-semiconductors, each metal-oxide-semiconductor is connected after a transducer formation transducer array parallel with one another again respectively, and transducer array is again
Formation sound wave defence device in parallel with power amplifier, sound wave defence device is distributed in camera（5）Both sides.
2. police car Special flexible multifunctional acoustic wave defence equipment according to claim 1, it is characterised in that：Also include one
The casing of shaping（1）With bottom plate（3）, provided with camera mounting hole（22）With transducer positioning hole（24）Front panel（4）And
Provided with cable hole（27）Rear board（19）, the transducer array and camera（5）Plate forward-mounted（4）With rear board
（19）Between, and front panel（4）Installed in casing（1）Front, rear board（19）Installed in casing（1）The back side.
3. police car Special flexible multifunctional acoustic wave defence equipment according to claim 2, it is characterised in that：The casing
（1）Top be provided with warning lamp support（8）, in warning lamp support（8）On the warning lamp being made of high-brightness LED lamp is installed
（9）.
4. police car Special flexible multifunctional acoustic wave defence equipment according to claim 2, it is characterised in that：The casing
（1）With bottom plate（3）Between be additionally provided with reinforcer（2）.
5. police car Special flexible multifunctional acoustic wave defence equipment according to claim 2, it is characterised in that：The casing
（1）, bottom plate（3）, front panel（4）And rear board（19）Material be aluminium alloy.
6. police car Special flexible multifunctional acoustic wave defence equipment according to claim 2, it is characterised in that：The casing
（1）With rear board（19）Between be provided with rear board cross support（20）Support member is erected with rear board（21）, and in plate below
（19）With rear board cross support（20）, rear board erect support member（21）Between rubber strip is set.
7. police car Special flexible multifunctional acoustic wave defence equipment according to claim 2, it is characterised in that：The front panel
（4）Outside is additionally provided with the guard of stainless steel（7）.
8. a kind of control method of the equipment of the police car Special flexible multifunctional acoustic wave defence as described in any one of claim 1 to 7, its
It is characterised by, comprises the following steps：
S1. the image of target is dispersed in camera collection, and is generated image information and sent to computer；
S2. computer according to image information obtain dispersing target relative to the azimuth information of police car and disperse target and police car it
Between range information, and generate operating transducers sequence number and send to single-chip microcomputer；
S3. single-chip microcomputer controls the break-make of corresponding metal-oxide-semiconductor according to operating transducers sequence number, to determine the sound on the left of camera or right side
The number of transducer in the sound wave defence device whether ripple defence device works and work.
9. control method according to claim 8, it is characterised in that：Array transducers in the sound wave defence device are 2
The row rectangle gust of row 4, and sound wave defence device mode of operation is that 4 transducers work or the work or 8 simultaneously of 6 transducers simultaneously
Individual transducer works simultaneously.
10. control method according to claim 9, it is characterised in that the single-chip microcomputer is according to operating transducers sequence number control
The break-make of metal-oxide-semiconductor processed, with the following manner：
When dispersing the distance between target and police car less than 40 meters, the transducer number worked in sound wave defence device is 4；Or
When to disperse the distance between target and police car be 40 meters to 76 meters, the transducer number worked in sound wave defence device is 6；
Or
When dispersing the distance between target and police car more than 76 meters, the transducer number worked in sound wave defence device is 8.
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| CN201710361125.0A CN106973345B (en) | 2017-05-22 | 2017-05-22 | A kind of police car Special flexible multifunctional acoustic wave defence equipment and control method |
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| CN201710361125.0A CN106973345B (en) | 2017-05-22 | 2017-05-22 | A kind of police car Special flexible multifunctional acoustic wave defence equipment and control method |
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| CN107804224A (en) * | 2017-12-12 | 2018-03-16 | 成都电科海立科技有限公司 | Alarm device for police car roof |
| CN110213693A (en) * | 2019-07-08 | 2019-09-06 | 辽宁科技大学 | A kind of intelligent video speaker |
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| CN106162436A (en) * | 2016-06-30 | 2016-11-23 | 广东美的制冷设备有限公司 | Player method based on multi-loudspeaker and system |
| CN206049483U (en) * | 2016-08-30 | 2017-03-29 | 昆明征盟经贸有限公司 | Dash forward at a kind of police patrol of synthesis car |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107804224A (en) * | 2017-12-12 | 2018-03-16 | 成都电科海立科技有限公司 | Alarm device for police car roof |
| CN110213693A (en) * | 2019-07-08 | 2019-09-06 | 辽宁科技大学 | A kind of intelligent video speaker |
| CN110213693B (en) * | 2019-07-08 | 2024-04-09 | 辽宁科技大学 | Intelligent video sound box |
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| CN106973345B (en) | 2019-06-21 |
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