WO2018223463A1 - 多功能警用喇叭 - Google Patents
多功能警用喇叭 Download PDFInfo
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- WO2018223463A1 WO2018223463A1 PCT/CN2017/091156 CN2017091156W WO2018223463A1 WO 2018223463 A1 WO2018223463 A1 WO 2018223463A1 CN 2017091156 W CN2017091156 W CN 2017091156W WO 2018223463 A1 WO2018223463 A1 WO 2018223463A1
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
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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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Definitions
- the invention relates to the field of horn control, in particular to a multifunctional police horn.
- Speakers made with high-performance speakers mean lower transient distortion and better sound quality.
- Ordinary multimedia speakers woofer speakers are mostly between 3 and 5 inches.
- Speakers made with high-performance speakers also mean lower transient distortion and better sound quality.
- Conical paper cone speakers are mainly composed of magnetic circuit system (permanent magnet, core column, magnetic conductive plate), vibration system (paper cone, voice coil) and support auxiliary system (centering piece, basin frame, cushion). Partial composition.
- Voice coil The voice coil is the driving unit of the cone-shaped cone speaker. It is wound on the paper tube by two layers of very thin copper wire. Generally, it is wound around several dozen turns, also called coil, placed on the magnetic core. The magnetic interference gap formed by the column and the magnetic conductive plate. The voice coil is fixed with the paper cone. When the sound current signal enters the voice coil, the voice coil vibration drives the paper cone to vibrate.
- Paper cone There are many kinds of materials used for the cone diaphragm of the cone cone. There are two types of natural fiber and man-made fiber. Natural fibers are usually made of cotton, wood, wool, silk, etc., and rayon is made of rayon, nylon, glass fiber, and the like. Since the paper cone is the sound radiating device of the horn, the vocal performance of the horn is determined to a considerable extent, so no matter which kind of paper cone, it is required to be light and rigid, and cannot be deformed due to changes in ambient temperature and humidity. .
- Folding ring is set to ensure the movement of the paper cone along the axial direction of the horn and to limit the lateral movement. At the same time, it acts to block the front and back of the paper cone.
- the material of the folding ring is in addition to the paper cone In addition to the material, it is also bonded to the paper cone by hot pressing using plastic, natural rubber, and the like.
- Centering piece The centering piece is used to support the joint of the voice coil and the paper cone to ensure that it is vertical without skewing. There are many concentric rings on the centering piece, so that the voice coil can freely move up and down in the magnetic gap without lateral movement, ensuring that the voice coil does not touch the magnetic plate.
- the dust cover on the centering piece is to prevent the external dust from falling into the magnetic gap, avoiding the friction between the dust and the voice coil, and causing the horn to produce an abnormal sound.
- the police horn in the prior art cannot detect suspicious persons around, and cannot perform high-decibel shock based on the detection result of the suspicious person, resulting in waste of hardware resources of the police horn in the prior art.
- the present invention provides a multi-function police horn, which performs suspicious person trajectory detection on the surrounding image, and issues a suspicious person alarm signal when determining that there is a suspicious person with a suspicious person trajectory, otherwise, no
- the suspicious person signal when receiving the suspicious person alarm signal, simultaneously transmits a high-decibel speaker driving signal to the speaker driver and the auxiliary audio signal source, and is further configured to: when receiving the suspicious person signal, to the speaker driver Simultaneously transmitting the low-decibel speaker driving signal with the auxiliary sound signal source, thereby ensuring the shock to the surrounding suspicious persons without wasting energy.
- a multi-function police horn comprising an auxiliary sound signal source, a horn main body, a horn driver and a main control device, wherein the main control device and the auxiliary sound signal source respectively
- the horn main body and the horn driver are connected, the horn driver is configured to control a utterance mode of the horn main body, and the main control device simultaneously transmits a horn driving signal to the horn driver and the auxiliary audio signal source;
- the auxiliary sound signal source receives the speaker driving signal, enters a working mode from the power saving mode, and performs corresponding auxiliary sound playing.
- the method further includes:
- the horn fixing device is disposed on the roof of the police car and connected to the horn main body for fixing the horn main body.
- the method further includes:
- a navigation device disposed in the front panel of the police car, connected to the main control device, and used for Obtaining a current navigation position of the horn from the navigation satellite, and transmitting the current navigation position of the horn to the main control device.
- the method further includes:
- a wireless communication interface coupled to the navigation device, for receiving a current navigation position of the speaker, and wirelessly transmitting the current navigation position of the speaker to a remote police center server.
- the method further includes:
- the anti-theft device includes a vibration sensor connected to the horn main body for detecting a vibration value at the horn main body, and transmitting the vibration value at the horn main body to the horn drive when the vibration value is greater than or equal to a preset vibration threshold value Buzzer drive signal;
- the horn driver controls the horn body to emit a buzzer sound when receiving the buzzer driving signal;
- the high-definition image sensing device is embedded in the outer casing of the horn body for performing an image on a scene surrounding the police car Data acquisition to obtain images of surrounding scenes;
- a first filtering device connected to the high-definition image sensing device, configured to receive a surrounding scene image, and simultaneously perform wavelet filtering processing, Wiener filtering processing, median filtering processing, and Gaussian low-pass filtering processing on the surrounding scene image, Obtaining a first filtered image, a second filtered image, a third filtered image, and a fourth filtered image, respectively, and simultaneously for the first filtered image, the second filtered image, the third filtered image, and the fourth Filtering the image to perform signal-to-noise ratio analysis to obtain a first signal to noise ratio, a second signal to noise ratio, a third signal to noise ratio, and a fourth signal to noise ratio, respectively, and selecting a signal to noise ratio having the largest value from the four signal to noise ratios As the target signal to noise ratio, the filtered image corresponding to the target signal to noise ratio is used as the target filtered image;
- An edge enhancement device coupled to the first filtering device, configured to perform edge enhancement processing on the target filtered image to obtain an edge enhanced image
- a noise analysis device coupled to the edge enhancement device, configured to perform noise component analysis on the edge enhancement image to obtain various noise types in the edge enhancement image and corresponding noise signal components respectively, and obtain respective noises Selecting three noise signal components having the largest amplitude among the signal components and sorting them as the first noise signal component, the second noise signal component and the third noise signal component according to the amplitude from large to small;
- a second filtering device coupled to the edge enhancement device and the noise analysis device, respectively, for searching from the image filtering template library with the first noise signal component, the second noise signal component, and
- the image filtering template corresponding to the third noise signal component respectively serves as a first filtering template, a second filtering template, and a third filtering template, based on the first filtering template, the second filtering template, and the third filtering template pair
- the edge enhancement image performs a filtering process to obtain a final filtered image
- a trajectory detecting device is connected to the second filtering device, configured to perform suspicious person trajectory detection on the final filtered image, and issue a suspicious person alarm signal when determining that a suspicious person having a suspicious person trajectory exists in the final filtered image Otherwise, a signal of no suspicious person is issued;
- the main control device is further connected to the trajectory detecting device, and is configured to simultaneously send a high-decibel speaker driving signal to the horn driver and the auxiliary audio signal source when receiving the suspicious person alarm signal, and is also used for Receiving the low-decibel speaker driving signal to the speaker driver and the auxiliary audio signal source when receiving the unsuspecting person signal;
- the performing, by the second filtering device, performing filtering processing on the edge enhanced image based on the first filtering template, the second filtering template, and the third filtering template to obtain a final filtered image includes: first using the first Performing a filtering process on the edge enhancement image to obtain a first intermediate filtered image, and performing filtering processing on the first intermediate filtered image by using the second filtering template to obtain a second intermediate filtered image, and finally using the filtering template
- the third filtering template performs filtering processing on the second intermediate filtered image to obtain a final filtered image.
- the first filtering device, the edge enhancement device, the noise analysis device, the second filtering device, and the trajectory detecting device respectively adopt different on-chip
- the chip is implemented.
- the first filtering device, the edge enhancement device, the noise analysis device, the second filtering device, and the trajectory detecting device are respectively located in different integrations On the board.
- the first filtering device, the edge enhancement device, the noise analysis device, the second filtering device, and the trajectory detecting device are all disposed in a police car Inside the front panel.
- the method further includes:
- a liquid crystal display device is disposed in the front panel of the police car, and is connected to the main control device for displaying the current navigation position of the speaker in real time, and is also used for real-time display and the suspicious person alarm signal or the unsuspecting The text warning information corresponding to the character signal.
- FIG. 1 is a block diagram showing the structure of a multi-function police horn shown in accordance with an embodiment of the present invention.
- FIG. 2 is a block diagram showing the structure of an antitheft device for a multi-function police horn according to an embodiment of the present invention.
- speakers There are many types of speakers, which can be divided into electric type (ie, moving coil type), electrostatic type (ie, capacitive type), electromagnetic type (ie, reed type), and piezoelectric type (ie, crystal type) according to the principle of transducing.
- electric type ie, moving coil type
- electrostatic type ie, capacitive type
- electromagnetic type ie, reed type
- piezoelectric type ie, crystal type
- the split type electric
- capacitive electrostatic
- piezoelectric crystal or ceramic
- electromagnetic pressure spring
- electric ion and pneumatic horn etc.
- the horn has the advantages of good electroacoustic performance, firm structure and low cost, and is widely used;
- the paper basin type, the horn type and the diaphragm type according to the shape of the paper cone, the circular shape, the oval shape, the double paper cone and the rubber folding ring; according to the working frequency, the bass, the middle sound, the high sound, and some are divided into Recorder-specific, TV-specific, normal and high-fidelity speakers; low-impedance and high-impedance by voice coil impedance; direct-spoke and ambient sound according to the effect.
- the speaker is divided into a built-in speaker and an external speaker, and the external speaker is generally referred to as a speaker.
- the built-in speaker means that the MP4 player has a built-in speaker, so that the user can listen to the sound of the MP4 player through the headphone jack or through the built-in speaker.
- the MP4 player with built-in speaker can eliminate the need for external speakers, and can avoid the inconvenience caused by wearing headphones for a long time.
- the current police horn only has the function of playing the voice of police officers and playing the warning tone, which cannot provide more help for police officers.
- the present invention constructs a multifunctional police horn, which integrates more police functions on the current police horn.
- the system includes an auxiliary sound signal source, a speaker body, a speaker driver and a master control device, wherein the master control device is respectively connected to the auxiliary sound signal source, the speaker body and the speaker driver, and the speaker driver is used for controlling a sounding mode of the speaker body, the master device simultaneously transmitting a speaker driving signal to the speaker driver and the auxiliary sound signal source;
- the auxiliary sound signal source receives the speaker driving signal, enters a working mode from the power saving mode, and performs corresponding auxiliary sound playing.
- the multifunctional police horn further includes:
- the horn fixing device is disposed on the roof of the police car and connected to the horn main body for fixing the horn main body.
- the multifunctional police horn further includes:
- a navigation device disposed in the front panel of the police car, connected to the main control device, configured to acquire a current navigation position of the speaker from the navigation satellite, and send the current navigation position of the speaker to the main control device.
- the multifunctional police horn further includes:
- a wireless communication interface coupled to the navigation device, for receiving a current navigation position of the speaker, and wirelessly transmitting the current navigation position of the speaker to a remote police center server.
- the multifunctional police horn further includes:
- the anti-theft device includes a vibration sensor, a memory, a comparator, and an output unit
- the vibration sensor is connected to the horn main body for detecting a vibration value at the horn main body
- the memory is used for storing a preset vibration threshold
- the comparator being respectively connected to the vibration sensor, the memory, and the output unit, and configured to pass through the output unit when a vibration value at the horn main body is greater than or equal to a preset vibration threshold Sending a buzzer driving signal to the speaker driver;
- the horn driver controls the horn body to emit a buzzer sound when receiving the buzzer driving signal;
- the high-definition image sensing device is embedded in the outer casing of the horn body for performing an image on a scene surrounding the police car Data acquisition to obtain images of surrounding scenes;
- a first filtering device connected to the high-definition image sensing device for receiving a surrounding scene image
- wavelet filtering processing, Wiener filtering processing, median filtering processing, and Gaussian low-pass filtering processing are simultaneously performed on the surrounding scene image to obtain a first filtered image, a second filtered image, a third filtered image, and a fourth, respectively.
- An edge enhancement device coupled to the first filtering device, configured to perform edge enhancement processing on the target filtered image to obtain an edge enhanced image
- a noise analysis device coupled to the edge enhancement device, configured to perform noise component analysis on the edge enhancement image to obtain various noise types in the edge enhancement image and corresponding noise signal components respectively, and obtain respective noises Selecting three noise signal components having the largest amplitude among the signal components and sorting them as the first noise signal component, the second noise signal component and the third noise signal component according to the amplitude from large to small;
- a second filtering device which is respectively connected to the edge enhancement device and the noise analysis device, and is configured to search, from the image filtering template library, respectively, corresponding to the first noise signal component, the second noise signal component, and the third noise signal component.
- the image filtering template is used as a first filtering template, a second filtering template, and a third filtering template, and performing filtering processing on the edge enhanced image based on the first filtering template, the second filtering template, and the third filtering template Obtain a final filtered image;
- a trajectory detecting device is connected to the second filtering device, configured to perform suspicious person trajectory detection on the final filtered image, and issue a suspicious person alarm signal when determining that a suspicious person having a suspicious person trajectory exists in the final filtered image Otherwise, a signal of no suspicious person is issued;
- the main control device is further connected to the trajectory detecting device, and is configured to simultaneously send a high-decibel speaker driving signal to the horn driver and the auxiliary audio signal source when receiving the suspicious person alarm signal, and is also used for Receiving the low-decibel speaker driving signal to the speaker driver and the auxiliary audio signal source when receiving the unsuspecting person signal;
- the performing, by the second filtering device, performing filtering processing on the edge enhanced image based on the first filtering template, the second filtering template, and the third filtering template to obtain a final filtered image includes: first using the first Performing a filtering process on the edge enhancement image to obtain a first intermediate filtered image, and then using the second filtering template to the first intermediate filtering image And performing a filtering process to obtain a second intermediate filtered image, and finally performing filtering processing on the second intermediate filtered image using the third filtering template to obtain a final filtered image.
- the first filtering device, the edge enhancement device, the noise analysis device, the second filtering device, and the trajectory detecting device respectively adopt different on-chip
- the chip is implemented.
- the first filtering device, the edge enhancement device, the noise analysis device, the second filtering device, and the trajectory detecting device are respectively located on different integrated circuit boards.
- the first filtering device, the edge enhancement device, the noise analysis device, the second filtering device, and the trajectory detecting device are all disposed in a front panel of the police car .
- the multifunctional police horn further includes:
- a liquid crystal display device is disposed in the front panel of the police car, and is connected to the main control device for displaying the current navigation position of the speaker in real time, and is also used for real-time display and the suspicious person alarm signal or the unsuspecting The text warning information corresponding to the character signal.
- image filtering that is, suppressing the noise of the target image under the condition of retaining the details of the image as much as possible, is an indispensable operation in image preprocessing, and the processing effect will directly affect the effective image processing and analysis. Sex and reliability.
- noise is introduced into the resulting image when the input image object is not as expected in some parts of the image processing.
- noise often appear as an isolated pixel or block of pixels that cause a strong visual effect on the image.
- the noise signal is uncorrelated with the object to be studied. It appears in the form of useless information, disturbing the observable information of the image.
- the noise table is a large or small extreme value. These extreme values act on the true gray value of the image pixels by adding and subtracting, causing bright and dark interference to the image, which greatly reduces the image quality and influences.
- the nonlinear filter in general, when the signal When the spectrum is mixed with the noise spectrum, or when there is non-superimposed noise in the signal, such as noise caused by system nonlinearity or non-Gaussian noise, etc., traditional linear filtering techniques, such as Fourier transform, filter out noise. In some way, the image details (such as edges) are blurred in some way, which leads to a decrease in the positioning accuracy of the linear features and the extractability of the features.
- the nonlinear filter is based on a nonlinear mapping relationship with the input signal. It is often possible to map a particular noise to approximately zero while preserving the characteristics of the signal, so that it can overcome the linear filter to a certain extent. Inadequacies.
- the multi-function police horn of the invention aims at the technical problem of the single function of the police horn in the prior art, by modifying the hardware structure of the police horn in the prior art, integrating multiple high-precision image processing devices to the nearby image
- the suspicious person trajectory detection is carried out, and when a suspicious person is detected, the suspicious person is subjected to a high decibel shock, thereby effectively preventing the occurrence of criminal behavior.
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Abstract
一种多功能警用喇叭，包括辅助音信号源（1）、喇叭主体（2）、喇叭驱动器（3）和主控设备（4），主控设备（4）分别与辅助音信号源（1）、喇叭主体（2）以及喇叭驱动器（3）连接，喇叭驱动器（3）用于控制喇叭主体（2）的发音模式，主控设备（4）向喇叭驱动器（3）和辅助音信号源（1）同时发送喇叭驱动信号；其中，辅助音信号源（1）在接收到喇叭驱动信号后，从省电模式进入工作模式，进行相应的辅助音的播放，有效扩展了警用喇叭的功能。
Description
本发明涉及喇叭控制领域，尤其涉及一种多功能警用喇叭。
喇叭尺寸自然是越大越好，大口径的低音喇叭能在低频部分有更好的表现，他是在选购之中可以挑选的。用高性能的喇叭制造的音箱意味着有更低的瞬态失真和更好的音质。普通多媒体音箱低音喇叭的喇叭多为3～5英寸之间。用高性能的喇叭制造的音箱也意味着有更低的瞬态失真和更好的音质。
最常见的电动式锥形纸盆喇叭。电动式锥形喇叭即过去常说成纸盆喇叭，尽管2014年振膜仍以纸盆为主，但同时出现了许多高分子材料振膜、金属振膜，用锥形喇叭称呼就名符其实了。锥形纸盆喇叭大体由磁回路系统(永磁体、芯柱、导磁板)、振动系统(纸盆、音圈)和支撑辅助系统(定心支片、盆架、垫边)等三大部分构成。
1.音圈：音圈是锥形纸盆喇叭的驱动单元，他是用很细的铜导线分两层绕在纸管上，一般绕有几十圈，又称线圈，放置于导磁芯柱与导磁板构成的磁疑隙中。音圈与纸盆固定在一起，当声音电流信号通入音圈后，音圈振动带动着纸盆振动。
2.纸盆：锥形纸盆喇叭的锥形振膜所用的材料有很多种类，一般有天然纤维和人造纤维两大类。天然纤维常采用棉、木材、羊毛、绢丝等，人造纤维则采用人造丝、尼龙、玻璃纤维等。由于纸盆是喇叭的声音辐射器件，在相当大的程度上决定着喇叭的放声性能，所以无论哪一种纸盆，要求既要质轻又要刚性良好，不能因环境温度、湿度变化而变形。
3.折环：折环是为保证纸盆沿喇叭的轴向运动、限制横向运动而设置的，同时起到阻挡纸盆前后空敢流通的作用。折环的材料除常用纸盆的
材料外，还利用塑料、天然橡胶等，经过热压粘接在纸盆上。
4.定心支片：定心支片用于支持音圈和纸盆的结合部位，保证其垂直而不歪斜。定心支片上有许多同心圆环，使音圈在磁隙中自由地上下移动而不作横向移动，保证音圈不与导磁板相碰。定心支片上的防尘罩是为了防止外部灰尘等落磁隙，避免造成灰尘与音圈摩擦，而使喇叭产生异常声音。
但是，现有技术中的警用喇叭无法对周围进行可疑人物检测，以及无法基于可疑人物的检测结果进行高分贝震慑，导致现有技术中的警用喇叭的硬件资源上的浪费。
发明内容
为了解决上述问题，本发明提供了一种多功能警用喇叭，对所述周围图像进行可疑人物轨迹检测，在确定存在具有可疑人物轨迹的可疑人物时，发出可疑人物报警信号，否则，发出无可疑人物信号，在接收到所述可疑人物报警信号时，向喇叭驱动器和辅助音信号源同时发送高分贝喇叭驱动信号，还用于在接收到所述无可疑人物信号时，向所述喇叭驱动器和所述辅助音信号源同时发送低分贝喇叭驱动信号，从而在不浪费能源的前提下，保证对周围可疑人物的震慑。
根据本发明的一方面，提供了一种多功能警用喇叭，所述系统包括辅助音信号源、喇叭主体、喇叭驱动器和主控设备，所述主控设备分别与所述辅助音信号源、所述喇叭主体以及所述喇叭驱动器连接，所述喇叭驱动器用于控制所述喇叭主体的发音模式，所述主控设备向所述喇叭驱动器和所述辅助音信号源同时发送喇叭驱动信号；
其中，所述辅助音信号源在接收到所述喇叭驱动信号，从省电模式进入工作模式，进行相应的辅助音的播放。
更具体地，在所述多功能警用喇叭中，还包括：
喇叭固定设备，设置在警车的车顶上，与所述喇叭主体连接，用于对所述喇叭主体进行固定。
更具体地，在所述多功能警用喇叭中，还包括：
导航设备，设置在警车的前端仪表盘内，与所述主控设备连接，用于
从导航卫星处获取所述喇叭的当前导航位置，并将所述喇叭的当前导航位置发送给所述主控设备。
更具体地，在所述多功能警用喇叭中，还包括：
无线通信接口，与所述导航设备连接，用于接收所述喇叭的当前导航位置，并将所述喇叭的当前导航位置无线发送给远端的警务中心服务器处。
更具体地，在所述多功能警用喇叭中，还包括：
防盗设备，包括振动传感器，与所述喇叭主体连接，用于检测所述喇叭主体处的振动值，并在所述喇叭主体处的振动值大于等于预设振动阈值时，向所述喇叭驱动器发送蜂鸣驱动信号；
所述喇叭驱动器在接收到所述蜂鸣驱动信号时，控制所述喇叭主体发出蜂鸣报警声；高清图像传感设备，嵌入在所述喇叭主体的外壳内，用于对警车周围场景进行图像数据采集以获得周围场景图像；
第一滤波设备，与所述高清图像传感设备连接，用于接收周围场景图像，对所述周围场景图像同时执行小波滤波处理、维纳滤波处理、中值滤波处理和高斯低通滤波处理，以分别获得第一滤波图像、第二滤波图像、第三滤波图像和第四滤波图像，同时对所述第一滤波图像、所述第二滤波图像、所述第三滤波图像和所述第四滤波图像进行信噪比分析以分别获得第一信噪比、第二信噪比、第三信噪比和第四信噪比，从所述四个信噪比中选择数值最大的信噪比作为目标信噪比，将目标信噪比对应的滤波图像作为目标滤波图像；
边缘增强设备，与所述第一滤波设备连接，用于对所述目标滤波图像进行边缘增强处理以获得边缘增强图像；
噪声分析设备，与所述边缘增强设备连接，用于对所述边缘增强图像进行噪声成分解析以获得所述边缘增强图像中各种噪声类型以及分别对应的各个噪声信号成分，在获得的各个噪声信号成分中选择出幅值最大的三个噪声信号成分并按照幅值从大到小排序分别作为第一噪声信号成分、第二噪声信号成分和第三噪声信号成分；
第二滤波设备，分别与所述边缘增强设备和所述噪声分析设备连接，用于从图像滤波模版库中搜索与第一噪声信号成分、第二噪声信号成分和
第三噪声信号成分分别对应的图像滤波模版以作为第一滤波模版、第二滤波模版和第三滤波模版，基于所述第一滤波模版、所述第二滤波模版和所述第三滤波模版对所述边缘增强图像执行滤波处理以获得最终滤波图像；
轨迹检测设备，与所述第二滤波设备连接，用于对所述最终滤波图像进行可疑人物轨迹检测，在确定所述最终滤波图像中存在具有可疑人物轨迹的可疑人物时，发出可疑人物报警信号，否则，发出无可疑人物信号；
所述主控设备还与所述轨迹检测设备连接，用于在接收到所述可疑人物报警信号时，向所述喇叭驱动器和所述辅助音信号源同时发送高分贝喇叭驱动信号，还用于在接收到所述无可疑人物信号时，向所述喇叭驱动器和所述辅助音信号源同时发送低分贝喇叭驱动信号；
其中，所述第二滤波设备基于所述第一滤波模版、所述第二滤波模版和所述第三滤波模版对所述边缘增强图像执行滤波处理以获得最终滤波图像包括：先使用所述第一滤波模版对所述边缘增强图像执行滤波处理，获得第一中间滤波图像，再使用所述第二滤波模版对所述第一中间滤波图像执行滤波处理，获得第二中间滤波图像，最后使用所述第三滤波模版对所述第二中间滤波图像执行滤波处理，获得最终滤波图像。
更具体地，在所述多功能警用喇叭中：所述第一滤波设备、所述边缘增强设备、所述噪声分析设备、所述第二滤波设备和所述轨迹检测设备分别采用不同的片上芯片来实现。
更具体地，在所述多功能警用喇叭中：所述第一滤波设备、所述边缘增强设备、所述噪声分析设备、所述第二滤波设备和所述轨迹检测设备分别位于不同的集成电路板上。
更具体地，在所述多功能警用喇叭中：所述第一滤波设备、所述边缘增强设备、所述噪声分析设备、所述第二滤波设备和所述轨迹检测设备都设置在警车的前端仪表盘内。
更具体地，在所述多功能警用喇叭中，还包括：
液晶显示设备，设置在警车的前端仪表盘内，与所述主控设备连接，用于实时显示所述喇叭的当前导航位置，还用于实时显示与所述可疑人物报警信号或所述无可疑人物信号对应的文字警示信息。
以下将结合附图对本发明的实施方案进行描述，其中：
图1为根据本发明实施方案示出的多功能警用喇叭的结构方框图。
图2为根据本发明实施方案示出的多功能警用喇叭的防盗设备的结构方框图。
附图标记：1辅助音信号源；2喇叭主体；3喇叭驱动器；4主控设备；5防盗设备；51振动传感器；52存储器；53比较器；54输出单元
下面将参照附图对本发明的多功能警用喇叭的实施方案进行详细说明。
喇叭的种类很多，按其换能原理可分为电动式(即动圈式)、静电式(即电容式)、电磁式(即舌簧式)、压电式(即晶体式)等几种，后两种多用于农村有线广播网中；按频率范围可分为低频喇叭、中频喇叭、高频喇叭，这些常在音箱中作为组合喇叭使用。
按换能机理和结构分动圈式(电动式)、电容式(静电式)、压电式(晶体或陶瓷)、电磁式(压簧式)、电离子式和气动式喇叭等，电动式喇叭具有电声性能好、结构牢固、成本低等优点，应用广泛；
按声辐射材料分纸盆式、号筒式、膜片式；按纸盆形状分圆形、椭圆形、双纸盆和橡皮折环；按工作频率分低音、中音、高音，有的还分成录音机专用、电视机专用、普通和高保真喇叭等；按音圈阻抗分低阻抗和高阻抗；按效果分直辐和环境声等。
喇叭分为内置喇叭和外置喇叭，而外置喇叭即一般所指的音箱。内置喇叭是指MP4播放器具有内置的喇叭，这样用户不仅可以通过耳机插孔还可以通过内置喇叭来收听MP4播放器发出的声音。具有内置喇叭的MP4播放器，可以不用外接音箱，也可以避免了长时间配带耳机所带来的不便。
当前的警用喇叭仅仅具有播放警务人员语音以及播放警示音的功能，无法为警务人员提供更多帮助。为了克服上述不足，本发明搭建了一种多功能警用喇叭，在当前的警用喇叭上集成了更多的警用功能。
图1为根据本发明实施方案示出的多功能警用喇叭的结构方框图，所
述系统包括辅助音信号源、喇叭主体、喇叭驱动器和主控设备，所述主控设备分别与所述辅助音信号源、所述喇叭主体以及所述喇叭驱动器连接，所述喇叭驱动器用于控制所述喇叭主体的发音模式，所述主控设备向所述喇叭驱动器和所述辅助音信号源同时发送喇叭驱动信号；
其中，所述辅助音信号源在接收到所述喇叭驱动信号，从省电模式进入工作模式，进行相应的辅助音的播放。
接着，继续对本发明的多功能警用喇叭的具体结构进行进一步的说明。
所述多功能警用喇叭中还包括：
喇叭固定设备，设置在警车的车顶上，与所述喇叭主体连接，用于对所述喇叭主体进行固定。
所述多功能警用喇叭中还包括：
导航设备，设置在警车的前端仪表盘内，与所述主控设备连接，用于从导航卫星处获取所述喇叭的当前导航位置，并将所述喇叭的当前导航位置发送给所述主控设备。
所述多功能警用喇叭中还包括：
无线通信接口，与所述导航设备连接，用于接收所述喇叭的当前导航位置，并将所述喇叭的当前导航位置无线发送给远端的警务中心服务器处。
所述多功能警用喇叭中还包括：
如图2所示，防盗设备，包括振动传感器、存储器、比较器和输出单元，所述振动传感器与所述喇叭主体连接，用于检测所述喇叭主体处的振动值，所述存储器用于存储预设振动阈值，所述比较器分别与所述振动传感器、所述存储器和所述输出单元连接，用于在所述喇叭主体处的振动值大于等于预设振动阈值时，通过所述输出单元向所述喇叭驱动器发送蜂鸣驱动信号；
所述喇叭驱动器在接收到所述蜂鸣驱动信号时，控制所述喇叭主体发出蜂鸣报警声；高清图像传感设备，嵌入在所述喇叭主体的外壳内，用于对警车周围场景进行图像数据采集以获得周围场景图像；
第一滤波设备，与所述高清图像传感设备连接，用于接收周围场景图
像，对所述周围场景图像同时执行小波滤波处理、维纳滤波处理、中值滤波处理和高斯低通滤波处理，以分别获得第一滤波图像、第二滤波图像、第三滤波图像和第四滤波图像，同时对所述第一滤波图像、所述第二滤波图像、所述第三滤波图像和所述第四滤波图像进行信噪比分析以分别获得第一信噪比、第二信噪比、第三信噪比和第四信噪比，从所述四个信噪比中选择数值最大的信噪比作为目标信噪比，将目标信噪比对应的滤波图像作为目标滤波图像；
边缘增强设备，与所述第一滤波设备连接，用于对所述目标滤波图像进行边缘增强处理以获得边缘增强图像；
噪声分析设备，与所述边缘增强设备连接，用于对所述边缘增强图像进行噪声成分解析以获得所述边缘增强图像中各种噪声类型以及分别对应的各个噪声信号成分，在获得的各个噪声信号成分中选择出幅值最大的三个噪声信号成分并按照幅值从大到小排序分别作为第一噪声信号成分、第二噪声信号成分和第三噪声信号成分；
第二滤波设备，分别与所述边缘增强设备和所述噪声分析设备连接，用于从图像滤波模版库中搜索与第一噪声信号成分、第二噪声信号成分和第三噪声信号成分分别对应的图像滤波模版以作为第一滤波模版、第二滤波模版和第三滤波模版，基于所述第一滤波模版、所述第二滤波模版和所述第三滤波模版对所述边缘增强图像执行滤波处理以获得最终滤波图像；
轨迹检测设备，与所述第二滤波设备连接，用于对所述最终滤波图像进行可疑人物轨迹检测，在确定所述最终滤波图像中存在具有可疑人物轨迹的可疑人物时，发出可疑人物报警信号，否则，发出无可疑人物信号；
所述主控设备还与所述轨迹检测设备连接，用于在接收到所述可疑人物报警信号时，向所述喇叭驱动器和所述辅助音信号源同时发送高分贝喇叭驱动信号，还用于在接收到所述无可疑人物信号时，向所述喇叭驱动器和所述辅助音信号源同时发送低分贝喇叭驱动信号；
其中，所述第二滤波设备基于所述第一滤波模版、所述第二滤波模版和所述第三滤波模版对所述边缘增强图像执行滤波处理以获得最终滤波图像包括：先使用所述第一滤波模版对所述边缘增强图像执行滤波处理，获得第一中间滤波图像，再使用所述第二滤波模版对所述第一中间滤波图
像执行滤波处理，获得第二中间滤波图像，最后使用所述第三滤波模版对所述第二中间滤波图像执行滤波处理，获得最终滤波图像。
更具体地，在所述多功能警用喇叭中：所述第一滤波设备、所述边缘增强设备、所述噪声分析设备、所述第二滤波设备和所述轨迹检测设备分别采用不同的片上芯片来实现。
在所述多功能警用喇叭中：所述第一滤波设备、所述边缘增强设备、所述噪声分析设备、所述第二滤波设备和所述轨迹检测设备分别位于不同的集成电路板上。
在所述多功能警用喇叭中：所述第一滤波设备、所述边缘增强设备、所述噪声分析设备、所述第二滤波设备和所述轨迹检测设备都设置在警车的前端仪表盘内。
所述多功能警用喇叭中还包括：
液晶显示设备，设置在警车的前端仪表盘内，与所述主控设备连接，用于实时显示所述喇叭的当前导航位置，还用于实时显示与所述可疑人物报警信号或所述无可疑人物信号对应的文字警示信息。
另外，图像滤波，即在尽量保留图像细节特征的条件下对目标图像的噪声进行抑制，是图像预处理中不可缺少的操作，其处理效果的好坏将直接影响到后续图像处理和分析的有效性和可靠性。
由于成像系统、传输介质和记录设备等的不完善，数字图像在其形成、传输记录过程中往往会受到多种噪声的污染。另外，在图像处理的某些环节当输入的像对象并不如预想时也会在结果图像中引入噪声。这些噪声在图像上常表现为一引起较强视觉效果的孤立像素点或像素块。一般，噪声信号与要研究的对象不相关它以无用的信息形式出现，扰乱图像的可观测信息。对于数字图像信号，噪声表为或大或小的极值，这些极值通过加减作用于图像像素的真实灰度值上，对图像造成亮、暗点干扰，极大降低了图像质量，影响图像复原、分割、特征提取、图像识别等后继工作的进行。要构造一种有效抑制噪声的滤波器必须考虑两个基本问题：能有效地去除目标和背景中的噪声；同时，能很好地保护图像目标的形状、大小及特定的几何和拓扑结构特征。
常用的图像滤波模式中的一种是，非线性滤波器，一般说来，当信号
频谱与噪声频谱混叠时或者当信号中含有非叠加性噪声时如由系统非线性引起的噪声或存在非高斯噪声等)，传统的线性滤波技术，如傅立变换，在滤除噪声的同时，总会以某种方式模糊图像细节(如边缘等)进而导致像线性特征的定位精度及特征的可抽取性降低。而非线性滤波器是基于对输入信号的一种非线性映射关系，常可以把某一特定的噪声近似地映射为零而保留信号的要特征，因而其在一定程度上能克服线性滤波器的不足之处。
采用本发明的多功能警用喇叭，针对现有技术中警用喇叭功能单一的技术问题，通过改造现有技术中的警用喇叭的硬件结构，集成多个高精度的图像处理设备对附近图像进行可疑人物轨迹检测，并在检测到可疑人物时，对可疑人员进行高分贝震慑，从而能够有效避免犯罪行为的发生。
可以理解的是，虽然本发明已以较佳实施例披露如上，然而上述实施例并非用以限定本发明。对于任何熟悉本领域的技术人员而言，在不脱离本发明技术方案范围情况下，都可利用上述揭示的技术内容对本发明技术方案做出许多可能的变动和修饰，或修改为等同变化的等效实施例。因此，凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所做的任何简单修改、等同变化及修饰，均仍属于本发明技术方案保护的范围内。
Claims (9)
- 一种多功能警用喇叭，包括辅助音信号源、喇叭主体、喇叭驱动器和主控设备，所述主控设备分别与所述辅助音信号源、所述喇叭主体以及所述喇叭驱动器连接，所述喇叭驱动器用于控制所述喇叭主体的发音模式，所述主控设备向所述喇叭驱动器和所述辅助音信号源同时发送喇叭驱动信号；其中，所述辅助音信号源在接收到所述喇叭驱动信号，从省电模式进入工作模式，进行相应的辅助音的播放。
- 如权利要求1所述的多功能警用喇叭，其特征在于，还包括：喇叭固定设备，设置在警车的车顶上，与所述喇叭主体连接，用于对所述喇叭主体进行固定。
- 如权利要求2所述的多功能警用喇叭，其特征在于，还包括：导航设备，设置在警车的前端仪表盘内，与所述主控设备连接，用于从导航卫星处获取所述喇叭的当前导航位置，并将所述喇叭的当前导航位置发送给所述主控设备。
- 如权利要求3所述的多功能警用喇叭，其特征在于，还包括：无线通信接口，与所述导航设备连接，用于接收所述喇叭的当前导航位置，并将所述喇叭的当前导航位置无线发送给远端的警务中心服务器处。
- 如权利要求4所述的多功能警用喇叭，其特征在于，还包括：防盗设备，包括振动传感器，与所述喇叭主体连接，用于检测所述喇叭主体处的振动值，并在所述喇叭主体处的振动值大于等于预设振动阈值时，向所述喇叭驱动器发送蜂鸣驱动信号；所述喇叭驱动器在接收到所述蜂鸣驱动信号时，控制所述喇叭主体发出蜂鸣报警声；高清图像传感设备，嵌入在所述喇叭主体的外壳内，用于对警车周围场景进行图像数据采集以获得周围场景图像；第一滤波设备，与所述高清图像传感设备连接，用于接收周围场景图像，对所述周围场景图像同时执行小波滤波处理、维纳滤波处理、中值滤波处理和高斯低通滤波处理，以分别获得第一滤波图像、第二滤波图像、第三滤波图像和第四滤波图像，同时对所述第一滤波图像、所述第二滤波图像、所述第三滤波图像和所述第四滤波图像进行信噪比分析以分别获得第一信噪比、第二信噪比、第三信噪比和第四信噪比，从所述四个信噪比中选择数值最大的信噪比作为目标信噪比，将目标信噪比对应的滤波图像作为目标滤波图像；边缘增强设备，与所述第一滤波设备连接，用于对所述目标滤波图像进行边缘增强处理以获得边缘增强图像；噪声分析设备，与所述边缘增强设备连接，用于对所述边缘增强图像进行噪声成分解析以获得所述边缘增强图像中各种噪声类型以及分别对应的各个噪声信号成分，在获得的各个噪声信号成分中选择出幅值最大的三个噪声信号成分并按照幅值从大到小排序分别作为第一噪声信号成分、第二噪声信号成分和第三噪声信号成分；第二滤波设备，分别与所述边缘增强设备和所述噪声分析设备连接，用于从图像滤波模版库中搜索与第一噪声信号成分、第二噪声信号成分和第三噪声信号成分分别对应的图像滤波模版以作为第一滤波模版、第二滤波模版和第三滤波模版，基于所述第一滤波模版、所述第二滤波模版和所述第三滤波模版对所述边缘增强图像执行滤波处理以获得最终滤波图像；轨迹检测设备，与所述第二滤波设备连接，用于对所述最终滤波图像进行可疑人物轨迹检测，在确定所述最终滤波图像中存在具有可疑人物轨迹的可疑人物时，发出可疑人物报警信号，否则，发出无可疑人物信号；所述主控设备还与所述轨迹检测设备连接，用于在接收到所述可疑人物报警信号时，向所述喇叭驱动器和所述辅助音信号源同时发送高分贝喇叭驱动信号，还用于在接收到所述无可疑人物信号时，向所述喇叭驱动器和所述辅助音信号源同时发送低分贝喇叭驱动信号；其中，所述第二滤波设备基于所述第一滤波模版、所述第二滤波模版 和所述第三滤波模版对所述边缘增强图像执行滤波处理以获得最终滤波图像包括：先使用所述第一滤波模版对所述边缘增强图像执行滤波处理，获得第一中间滤波图像，再使用所述第二滤波模版对所述第一中间滤波图像执行滤波处理，获得第二中间滤波图像，最后使用所述第三滤波模版对所述第二中间滤波图像执行滤波处理，获得最终滤波图像。
- 如权利要求5所述的多功能警用喇叭，其特征在于：所述第一滤波设备、所述边缘增强设备、所述噪声分析设备、所述第二滤波设备和所述轨迹检测设备分别采用不同的片上芯片来实现。
- 如权利要求5所述的多功能警用喇叭，其特征在于：所述第一滤波设备、所述边缘增强设备、所述噪声分析设备、所述第二滤波设备和所述轨迹检测设备分别位于不同的集成电路板上。
- 如权利要求5所述的多功能警用喇叭，其特征在于：所述第一滤波设备、所述边缘增强设备、所述噪声分析设备、所述第二滤波设备和所述轨迹检测设备都设置在警车的前端仪表盘内。
- 如权利要求3-8任一所述的多功能警用喇叭，其特征在于，还包括：液晶显示设备，设置在警车的前端仪表盘内，与所述主控设备连接，用于实时显示所述喇叭的当前导航位置，还用于实时显示与所述可疑人物报警信号或所述无可疑人物信号对应的文字警示信息。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2311906Y (zh) * | 1997-08-01 | 1999-03-24 | 哈尔滨电子应用技术研究所 | 单片机控制发声稳频电喇叭 |
| CN101425212A (zh) * | 2008-12-08 | 2009-05-06 | 奇瑞汽车股份有限公司 | 一种安防系统 |
| CN201774671U (zh) * | 2010-09-01 | 2011-03-23 | 王伟东 | 高频多音倒车喇叭 |
| CN102170600A (zh) * | 2009-11-16 | 2011-08-31 | 哈曼国际工业有限公司 | 带有便携式音频增强设备的音频系统 |
| US20120033834A1 (en) * | 2010-08-04 | 2012-02-09 | Nokia Corporation | Apparatus With Directivity Pattern |
| CN103042971A (zh) * | 2013-01-15 | 2013-04-17 | 哈尔滨工程大学 | 一种汽车喇叭智能控制装置及控制方法 |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2311906Y (zh) * | 1997-08-01 | 1999-03-24 | 哈尔滨电子应用技术研究所 | 单片机控制发声稳频电喇叭 |
| CN101425212A (zh) * | 2008-12-08 | 2009-05-06 | 奇瑞汽车股份有限公司 | 一种安防系统 |
| CN102170600A (zh) * | 2009-11-16 | 2011-08-31 | 哈曼国际工业有限公司 | 带有便携式音频增强设备的音频系统 |
| US20120033834A1 (en) * | 2010-08-04 | 2012-02-09 | Nokia Corporation | Apparatus With Directivity Pattern |
| CN201774671U (zh) * | 2010-09-01 | 2011-03-23 | 王伟东 | 高频多音倒车喇叭 |
| CN103042971A (zh) * | 2013-01-15 | 2013-04-17 | 哈尔滨工程大学 | 一种汽车喇叭智能控制装置及控制方法 |
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