WO2018223459A1 - 通用型警用扬声器 - Google Patents

通用型警用扬声器 Download PDF

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Publication number
WO2018223459A1
WO2018223459A1 PCT/CN2017/091152 CN2017091152W WO2018223459A1 WO 2018223459 A1 WO2018223459 A1 WO 2018223459A1 CN 2017091152 W CN2017091152 W CN 2017091152W WO 2018223459 A1 WO2018223459 A1 WO 2018223459A1
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Prior art keywords
image
target
speaker
police
disposed
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PCT/CN2017/091152
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English (en)
French (fr)
Inventor
高炎华
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宁波凯烁照明科技有限公司
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Priority to US16/469,467 priority Critical patent/US10708495B2/en
Publication of WO2018223459A1 publication Critical patent/WO2018223459A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/698—Control of cameras or camera modules for achieving an enlarged field of view, e.g. panoramic image capture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B9/00—Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure
    • F41B9/0087—Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure characterised by the intended use, e.g. for self-defence, law-enforcement, industrial use, military purposes
    • F41B9/0093—Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure characterised by the intended use, e.g. for self-defence, law-enforcement, industrial use, military purposes for riot control, e.g. water cannons therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B9/00—Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure
    • F41B9/0096—Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure having means for mixing other agents with the liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H9/00—Equipment for attack or defence by spreading flame, gas or smoke or leurres; Chemical warfare equipment
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/70—Denoising; Smoothing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/90—Dynamic range modification of images or parts thereof
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/50—Depth or shape recovery
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/70—Determining position or orientation of objects or cameras
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
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    • G06T7/70—Determining position or orientation of objects or cameras
    • G06T7/73—Determining position or orientation of objects or cameras using feature-based methods
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/16—Human faces, e.g. facial parts, sketches or expressions
    • G06V40/172—Classification, e.g. identification
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/90—Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/026—Supports for loudspeaker casings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • 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
    • 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
    • H04R9/025—Magnetic circuit
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H13/00—Means of attack or defence not otherwise provided for
    • F41H13/0043—Directed energy weapons, i.e. devices that direct a beam of high energy content toward a target for incapacitating or destroying the target
    • F41H13/0081—Directed energy weapons, i.e. devices that direct a beam of high energy content toward a target for incapacitating or destroying the target the high-energy beam being acoustic, e.g. sonic, infrasonic or ultrasonic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H9/00—Equipment for attack or defence by spreading flame, gas or smoke or leurres; Chemical warfare equipment
    • F41H9/04—Gas-blowing apparatus, e.g. for tear gas
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10024—Color image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10028—Range image; Depth image; 3D point clouds
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30196—Human being; Person
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles

Definitions

  • the present invention relates to the field of loudspeakers, and more particularly to a universal police speaker.
  • PP polypropylene
  • the police loudspeakers in the prior art lack the participation in police work, and the functions that can be shared are limited to the whistle shock. In the case of relatively limited police personnel, it is necessary to use existing hardware resources to provide more assistance. The police function, but the police speakers in the prior art can not do this.
  • the present invention provides a universal police speaker that performs face recognition on the human sub-image to obtain a target facial feature, and matches the target facial feature with each criminal molecular facial image feature. If the matching is successful, sending a recognition success signal, outputting the matching criminal molecule name corresponding to the criminal facial image feature, and determining the ejection direction based on the relative position of the final human sub-image in the differentiated image, Received
  • the ejection driving device is activated and the ejection direction is sent to the pepper water jetting device, and the corresponding human body target distance is determined based on the depth of field of the human body image corresponding to the human body image in the image of the human sub-image.
  • the real-time distance of the speaker, and adjusting the ejection force sent to the pepper water jet device according to the real-time distance.
  • a general-purpose police speaker comprising a dome speaker structure composed of a cavity, a voice coil, a magnet, a support piece, a diaphragm, and a shield, in the cavity Filled with a sound absorbing material, the voice coil is disposed around the inner cavity, the magnet is disposed around the voice coil, and the support piece is disposed between the voice coil and the magnet, the diaphragm Provided on the top of the inner cavity, the shield is disposed on the diaphragm of the diaphragm; wherein the speaker further comprises a horizontal bracket for placing the inner cavity, the voice coil, the magnet, the support piece, the diaphragm and the protection a cover; the horizontal bracket is located at the top of the body of the police vehicle.
  • the universal type of police speaker further includes: an image capturing component disposed on the horizontal bracket for performing image data acquisition on the periphery of the police vehicle to obtain a high-definition panoramic image.
  • the image capturing assembly includes four image sensors respectively embedded around the horizontal bracket, and the image capturing assembly outputs the four image sensors respectively The images are stitched to obtain the high definition panoramic image.
  • the universal type of police speaker further includes: a main control device disposed in the horizontal bracket, respectively connected to the dome speaker architecture and the image capturing component, for The content output by the image capture component controls the dome speaker architecture.
  • the method further includes:
  • a pepper water spraying device disposed on the horizontal bracket for sucking out the pepper water stored in the police vehicle and performing directional spraying; and a contrast enhancement device connected to the image capturing component for receiving the high-definition panoramic image,
  • the high-definition panoramic image performs contrast enhancement processing to obtain an enhanced image;
  • a Wiener filtering device connected to the contrast enhancement device for receiving the enhanced image and performing Wiener filtering processing on the enhanced image to obtain a filtered image; an area detecting device connected to the filtered image for Performing a human body target detection on the filtered image based on a preset human body feature to obtain respective human sub-images, and determining a pixel area of each human sub-image, based on each a pixel area of a target and a total pixel area of the filtered image to determine an area ratio of each target; a depth of field detecting device coupled to the area detecting device for determining, in the filtered image, each human sub-image separately Corresponding to the depth of field of each target, the physical area of each target is determined based on the area ratio and depth of field of each target;
  • An image screening device is connected to the depth of field detecting device, and configured to screen each target whose physical area is less than or equal to a first area threshold in the filtered image to obtain a preliminary screening image; and an image rescreening device, a depth of field detecting device connection, configured to screen, in the filtered image, each target whose physical area is less than or equal to a second area threshold to obtain a rescreen image; the second area threshold is greater than the first area threshold;
  • a target acquiring device which is respectively connected to the image preliminary screening device and the image rescreening device, for subtracting the preliminary screening image from the rescreened image to obtain a differentiated image, and the differentiated image
  • the human sub-image corresponding to the remaining target is output as the final human sub-image
  • a target analysis device connected to the target acquisition device, for receiving the final human sub-image, performing face recognition on the final human sub-image to obtain a target facial feature, and the target facial feature and each crime
  • the molecular facial image features are matched, and if the matching is successful, a recognition success signal is issued, and the matched criminal molecule name corresponding to the criminal facial image feature is output, and is determined based on the relative position of the final human sub-image in the differentiated image. In the injection direction, if all the matching fails, an identification failure signal is issued;
  • the main control device is further connected to the target analysis device and the pepper water injection device, respectively, for starting the injection drive device and transmitting the injection direction to the
  • the pepper water spraying device is further configured to close the pepper water spraying device when receiving the identification failure signal
  • the master control device is further configured to: when receiving the recognition success signal, determine a human body corresponding to the final human sub-image based on a depth of field of the human body target corresponding to the final human sub-image in the differentiated image
  • the real-time distance of the target from the speaker, and the injection force sent to the pepper water jet device is adjusted according to the real-time distance.
  • the universal type of police speaker further includes: a real-time display device disposed in the front panel of the police vehicle and connected to the main control device for displaying the spray direction and the real-time in real time The real-time distance.
  • the real-time display device is also used for real The text information corresponding to the recognition success signal or the recognition failure signal is displayed.
  • the utility model further includes: an injection head, which is connected to the pepper water spraying device for adjusting an injection direction of the pepper water spraying device.
  • Figure 1 is a block diagram showing the structure of a universal type of police speaker 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 coil type (electric type), capacitive type (electrostatic type), piezoelectric type (crystal or ceramic), electromagnetic type (pressure spring type), electric ion type and pneumatic type speaker, etc.
  • the speaker 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.
  • Speakers are divided into built-in speakers and external speakers, while external speakers are commonly referred to as speakers.
  • 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 eliminates the need for an external speaker and avoids the inconvenience of wearing a headset for a long time.
  • the current speaker has a single function and cannot promptly identify and prompt nearby criminals. Not to mention the use of measures to capture criminals.
  • the present invention constructs a universal type of police speaker capable of integrating the directional spray function of the pepper water to solve the above technical problems.
  • FIG. 1 is a block diagram showing the structure of a universal type police speaker according to an embodiment of the present invention, the system including a dome speaker structure composed of a cavity, a voice coil, a magnet, a support piece, a diaphragm, and a shield,
  • the inner cavity is filled with a sound absorbing material
  • the voice coil is disposed around the inner cavity
  • the magnet is disposed around the voice coil
  • the support piece is disposed between the voice coil and the magnet.
  • a diaphragm is disposed at a top of the inner cavity
  • the shield is disposed on the diaphragm of the diaphragm;
  • the speaker further comprises a horizontal bracket, a play mode switcher and a manual power switch, wherein the play mode switch is manually controlled, and the horizontal bracket is used for placing the inner cavity, the voice coil, the magnet, the support piece, and the vibration Membrane and shield; the horizontal bracket is located on the top of the body of the police vehicle.
  • the police speaker may further include: an image capturing component disposed on the horizontal bracket for performing image data acquisition on the periphery of the police vehicle to obtain a high-definition panoramic image.
  • the image capturing component includes four image sensors respectively embedded around the horizontal bracket, and the image capturing component splices images respectively output by the four image sensors to obtain High-definition panoramic image.
  • the police speaker may further include: a main control device disposed in the horizontal bracket, and respectively connected to the dome speaker architecture and the image capturing component, configured to be based on content output by the image capturing component
  • the dome speaker architecture is controlled.
  • the police speaker may further include:
  • a pepper water spraying device disposed on the horizontal bracket for sucking out the pepper water stored in the police vehicle and performing directional spraying; and a contrast enhancement device connected to the image capturing component for receiving the high-definition panoramic image,
  • the high-definition panoramic image performs contrast enhancement processing to obtain an enhanced image;
  • a Wiener filtering device connected to the contrast enhancement device for receiving the enhanced image and performing Wiener filtering processing on the enhanced image to obtain a filtered image; an area detecting device connected to the filtered image for Performing a human target on the filtered image based on a preset human body feature Detecting to obtain individual human sub-images, determining a pixel area of each human sub-image, determining an area ratio of each target based on a pixel area of each target and a total pixel area of the filtered image; a depth of field detecting device, The area detecting device is connected to determine, in the filtered image, each human sub-image corresponds to a depth of field of each target, and the physical area of each target is determined based on an area ratio and a depth of field of each target;
  • An image screening device is connected to the depth of field detecting device, and configured to screen each target whose physical area is less than or equal to a first area threshold in the filtered image to obtain a preliminary screening image; and an image rescreening device, a depth of field detecting device connection, configured to screen, in the filtered image, each target whose physical area is less than or equal to a second area threshold to obtain a rescreen image; the second area threshold is greater than the first area threshold;
  • a target acquiring device which is respectively connected to the image preliminary screening device and the image rescreening device, for subtracting the preliminary screening image from the rescreened image to obtain a differentiated image, and the differentiated image
  • the human sub-image corresponding to the remaining target is output as the final human sub-image
  • a target analysis device connected to the target acquisition device, for receiving the final human sub-image, performing face recognition on the final human sub-image to obtain a target facial feature, and the target facial feature and each crime
  • the molecular facial image features are matched, and if the matching is successful, a recognition success signal is issued, and the matched criminal molecule name corresponding to the criminal facial image feature is output, and is determined based on the relative position of the final human sub-image in the differentiated image. In the injection direction, if all the matching fails, an identification failure signal is issued;
  • the main control device is further connected to the target analysis device and the pepper water injection device, respectively, for starting the injection drive device and transmitting the injection direction to the
  • the pepper water spraying device is further configured to close the pepper water spraying device when receiving the identification failure signal
  • the master control device is further configured to: when receiving the recognition success signal, determine a human body corresponding to the final human sub-image based on a depth of field of the human body target corresponding to the final human sub-image in the differentiated image
  • the real-time distance of the target from the speaker, and the injection force sent to the pepper water jet device is adjusted according to the real-time distance.
  • the police speaker may further include: a real-time display device disposed in the front panel of the police vehicle and connected to the main control device for displaying the injection direction and the real-time distance in real time.
  • the real-time display device is further configured to display text information corresponding to the recognition success signal or the recognition failure signal in real time.
  • the police speaker may further include: an injection pan/tilt, connected to the pepper water jetting device for adjusting an injection direction of the pepper water jetting device.
  • 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.
  • Nonlinear filter generally speaking, when the signal spectrum is mixed with the noise spectrum or when the signal contains non-additive noise, such as noise or presence of non-linearity.
  • Gaussian noise, etc. traditional linear filtering techniques, such as Fourier transform, always blur the image details (such as edges) in a certain way, which leads to the positioning accuracy of linear features and the extractability of 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 technical problem that the police speaker cannot perform the riot operation in the prior art is achieved by adding an image recognition device and a pepper water jet device to the existing police speaker for crime.
  • the image recognition of the characters and the water jets of the peppers directed at the criminals simplify the operation of the police officers and make full use of the existing hardware. Resources.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Human Computer Interaction (AREA)
  • Technology Law (AREA)
  • Alarm Systems (AREA)

Abstract

一种通用型警用扬声器，包括内腔、音圈、磁体、支撑片、振膜和防护罩组成的球顶扬声器架构（1），内腔中内填有吸音材料，音圈设置在内腔周围，磁体设置在音圈周围，支撑片设置在音圈和磁体之间，振膜设置在内腔的顶部，防护罩设置在振膜上方；其中，扬声器还包括水平支架（2），用于放置内腔、音圈、磁体、支撑片、振膜和防护罩，水平支架（2）位于警用车辆的车体顶部。这种通用型警用扬声器，能够提高警用扬声器的制暴能力。

Description

通用型警用扬声器 技术领域
本发明涉及扬声器领域，尤其涉及一种通用型警用扬声器。
背景技术
常见扬声器有以下几种：纸盆音色自然、廉价、较好的刚性、材质较轻灵敏度高，缺点是防潮性差、制造时一致性难以控制，但顶级HiFi系统中用纸盆制造的比比皆是，因为声音输出非常平均，还原性好。
防弹布，有较宽的频响与较低的失真，是酷爱强劲低音者之首选，缺点是成本高、制作工艺复杂、灵敏度不高轻音乐效果不甚佳。羊毛编织盆，质地较软，他对柔和音乐与轻音乐的表现十分优异，但是低音效果不佳，缺乏力度与震撼力。
PP(聚丙烯)盆，他广泛流行于高档音箱中，一致性好失真低，各方面表现都可圈可点。此外还有像纤维类振膜和复合材料振膜等由于价格高昂极少应用于普及型音箱中。
现有技术中的警用扬声器缺乏对警务工作的参与度，能够共享的功能仅仅限于鸣笛震慑，在警务人员相对有限的情况下，需要利用现有的硬件资源去提供更多的辅助警务功能，而现有技术中的警用扬声器还做不到这一点。
发明内容
为了解决上述问题，本发明提供了一种通用型警用扬声器，将所述人体子图像进行人脸识别以获得目标脸部特征，将所述目标脸部特征与各个犯罪分子面部图像特征进行匹配，匹配成功，则发出识别成功信号，输出匹配到的犯罪分子面部图像特征对应的犯罪分子姓名，并基于所述最终人体子图像在所述差异化图像中的相对位置确定所述喷射方向，在接收到所 述识别成功信号时，启动所述喷射驱动设备并将所述喷射方向发送给所述辣椒水喷射设备，基于人体子图像对应的人体目标在人体子图像所在图像中的景深确定对应的人体目标距离所述扬声器的实时距离，并根据所述实时距离调整发送给所述辣椒水喷射设备的喷射力度。
根据本发明的一方面，提供了一种通用型警用扬声器，所述系统包括由内腔、音圈、磁体、支撑片、振膜和防护罩组成的球顶扬声器架构，所述内腔中内填有吸音材料，所述音圈设置在所述内腔周围，所述磁体设置在所述音圈周围，所述支撑片设置在所述音圈和所述磁体之间，所述振膜设置在所述内腔的顶部，所述防护罩设置在所述振膜振膜；其中，所述扬声器还包括水平支架，用于放置内腔、音圈、磁体、支撑片、振膜和防护罩；所述水平支架位于警用车辆的车体顶部。
更具体地，在所述通用型警用扬声器中，还包括：图像拍摄组件，设置在所述水平支架上，用于对警用车辆的四周进行图像数据采集以获得高清全景图像。
更具体地，在所述通用型警用扬声器中：所述图像拍摄组件包括四个图像传感器，分别嵌入在所述水平支架的四周，所述图像拍摄组件将所述四个图像传感器各自输出的图像进行拼接以获得所述高清全景图像。
更具体地，在所述通用型警用扬声器中，还包括：主控设备，设置在所述水平支架内，分别与所述球顶扬声器架构以及所述图像拍摄组件连接，用于基于所述图像拍摄组件输出的内容对所述球顶扬声器架构进行控制。
更具体地，在所述通用型警用扬声器中，还包括：
辣椒水喷射设备，设置在所述水平支架上，用于吸出警用车辆储存的辣椒水并进行定向喷射；对比度增强设备，与所述图像拍摄组件连接，用于接收高清全景图像，对所述高清全景图像执行对比度增强处理以获得增强图像；
维纳滤波设备，与所述对比度增强设备连接，用于接收所述增强图像，并对所述增强图像执行维纳滤波处理以获得滤波图像；面积检测设备，与所述滤波图像连接，用于基于预设人体特征对所述滤波图像执行人体目标检测以获得各个人体子图像，确定每一个人体子图像的像素面积，基于每 一个目标的像素面积和所述滤波图像的总像素面积确定每一个目标的面积占比；景深检测设备，与所述面积检测设备连接，用于确定在所述滤波图像中，各个人体子图像分别对应各个目标的景深，还基于每一个目标的面积占比和景深确定每一个目标的实体面积；
图像初筛设备，与所述景深检测设备连接，用于在所述滤波图像中，筛除实体面积小于等于第一面积阈值的各个目标，以获得初筛图像；图像再筛设备，与所述景深检测设备连接，用于在所述滤波图像中，筛除实体面积小于等于第二面积阈值的各个目标，以获得再筛图像；所述第二面积阈值大于所述第一面积阈值；
目标获取设备，分别与所述图像初筛设备和所述图像再筛设备连接，用于将所述再筛图像减去所述初筛图像以获得差异化图像，将所述差异化图像中的剩余目标所对应的人体子图像作为最终人体子图像输出；
目标分析设备，与所述目标获取设备连接，用于接收所述最终人体子图像，将所述最终人体子图像进行人脸识别以获得目标脸部特征，将所述目标脸部特征与各个犯罪分子面部图像特征进行匹配，匹配成功，则发出识别成功信号，输出匹配到的犯罪分子面部图像特征对应的犯罪分子姓名，并基于所述最终人体子图像在所述差异化图像中的相对位置确定所述喷射方向，全部匹配失败，则发出识别失败信号；
所述主控设备还分别与所述目标分析设备和所述辣椒水喷射设备连接，用于在接收到所述识别成功信号时，启动所述喷射驱动设备并将所述喷射方向发送给所述辣椒水喷射设备，还用于在接收到所述识别失败信号时，关闭所述辣椒水喷射设备；
其中，所述主控设备还用于在接收到所述识别成功信号时，基于所述最终人体子图像对应的人体目标在所述差异化图像中的景深确定所述最终人体子图像对应的人体目标距离所述扬声器的实时距离，并根据所述实时距离调整发送给所述辣椒水喷射设备的喷射力度。
更具体地，在所述通用型警用扬声器中，还包括：实时显示设备，设置在警用车辆的前端仪表盘内，与所述主控设备连接，用于实时显示所述喷射方向和所述实时距离。
更具体地，在所述通用型警用扬声器中：所述实时显示设备还用于实 时显示与所述识别成功信号或所述识别失败信号对应的文字信息。
更具体地，在所述通用型警用扬声器中，还包括：喷射云台，与所述辣椒水喷射设备连接，用于调整所述辣椒水喷射设备的喷射方向。
附图说明
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通用型警用扬声器的结构方框图。
附图标记：1球顶扬声器架构；2水平支架；3播放模式切换器；4手动功率切换器
具体实施方式
下面将参照附图对本发明的通用型警用扬声器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扬声器、中频扬声器、高频扬声器，这些常在音箱中作为组合扬声器使用。
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)、电离子式和气动式扬声器等，电动式扬声器具有电声性能好、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、普通和高保真扬声器等；按音圈阻抗分低阻抗和高阻抗；按效果分直辐和环境声等。
扬声器分为内置扬声器和外置扬声器，而外置扬声器即一般所指的音箱。内置扬声器是指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扬声器来收听MP4播放器发出的声音。具有内置扬声器的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。
当前扬声器功能单一，无法对附近的犯罪分子进行及时识别和提示， 更不用说采用措施对犯罪分子进行捕捉。为了克服上述不足，本发明搭建了一种通用型警用扬声器，能够集成辣椒水定向喷射功能，从而解决上述技术问题。
图1为根据本发明实施方案示出的通用型警用扬声器的结构方框图，所述系统包括由内腔、音圈、磁体、支撑片、振膜和防护罩组成的球顶扬声器架构，所述内腔中内填有吸音材料，所述音圈设置在所述内腔周围，所述磁体设置在所述音圈周围，所述支撑片设置在所述音圈和所述磁体之间，所述振膜设置在所述内腔的顶部，所述防护罩设置在所述振膜振膜；
其中，所述扬声器还包括水平支架、播放模式切换器和手动功率切换器，所述播放模式切换器采用手动方式控制，所述水平支架用于放置内腔、音圈、磁体、支撑片、振膜和防护罩；所述水平支架位于警用车辆的车体顶部。
接着，继续对本发明的通用型警用扬声器的具体结构进行进一步的说明。
所述警用扬声器还可以包括：图像拍摄组件，设置在所述水平支架上，用于对警用车辆的四周进行图像数据采集以获得高清全景图像。
在所述警用扬声器中：所述图像拍摄组件包括四个图像传感器，分别嵌入在所述水平支架的四周，所述图像拍摄组件将所述四个图像传感器各自输出的图像进行拼接以获得所述高清全景图像。
所述警用扬声器还可以包括：主控设备，设置在所述水平支架内，分别与所述球顶扬声器架构以及所述图像拍摄组件连接，用于基于所述图像拍摄组件输出的内容对所述球顶扬声器架构进行控制。
所述警用扬声器还可以包括：
辣椒水喷射设备，设置在所述水平支架上，用于吸出警用车辆储存的辣椒水并进行定向喷射；对比度增强设备，与所述图像拍摄组件连接，用于接收高清全景图像，对所述高清全景图像执行对比度增强处理以获得增强图像；
维纳滤波设备，与所述对比度增强设备连接，用于接收所述增强图像，并对所述增强图像执行维纳滤波处理以获得滤波图像；面积检测设备，与所述滤波图像连接，用于基于预设人体特征对所述滤波图像执行人体目标 检测以获得各个人体子图像，确定每一个人体子图像的像素面积，基于每一个目标的像素面积和所述滤波图像的总像素面积确定每一个目标的面积占比；景深检测设备，与所述面积检测设备连接，用于确定在所述滤波图像中，各个人体子图像分别对应各个目标的景深，还基于每一个目标的面积占比和景深确定每一个目标的实体面积；
图像初筛设备，与所述景深检测设备连接，用于在所述滤波图像中，筛除实体面积小于等于第一面积阈值的各个目标，以获得初筛图像；图像再筛设备，与所述景深检测设备连接，用于在所述滤波图像中，筛除实体面积小于等于第二面积阈值的各个目标，以获得再筛图像；所述第二面积阈值大于所述第一面积阈值；
目标获取设备，分别与所述图像初筛设备和所述图像再筛设备连接，用于将所述再筛图像减去所述初筛图像以获得差异化图像，将所述差异化图像中的剩余目标所对应的人体子图像作为最终人体子图像输出；
目标分析设备，与所述目标获取设备连接，用于接收所述最终人体子图像，将所述最终人体子图像进行人脸识别以获得目标脸部特征，将所述目标脸部特征与各个犯罪分子面部图像特征进行匹配，匹配成功，则发出识别成功信号，输出匹配到的犯罪分子面部图像特征对应的犯罪分子姓名，并基于所述最终人体子图像在所述差异化图像中的相对位置确定所述喷射方向，全部匹配失败，则发出识别失败信号；
所述主控设备还分别与所述目标分析设备和所述辣椒水喷射设备连接，用于在接收到所述识别成功信号时，启动所述喷射驱动设备并将所述喷射方向发送给所述辣椒水喷射设备，还用于在接收到所述识别失败信号时，关闭所述辣椒水喷射设备；
其中，所述主控设备还用于在接收到所述识别成功信号时，基于所述最终人体子图像对应的人体目标在所述差异化图像中的景深确定所述最终人体子图像对应的人体目标距离所述扬声器的实时距离，并根据所述实时距离调整发送给所述辣椒水喷射设备的喷射力度。
所述警用扬声器还可以包括：实时显示设备，设置在警用车辆的前端仪表盘内，与所述主控设备连接，用于实时显示所述喷射方向和所述实时距离。
在所述警用扬声器中：所述实时显示设备还用于实时显示与所述识别成功信号或所述识别失败信号对应的文字信息。
所述警用扬声器还可以包括：喷射云台，与所述辣椒水喷射设备连接，用于调整所述辣椒水喷射设备的喷射方向。
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。
采用本发明的通用型警用扬声器，针对现有技术中警用扬声器无法进行制暴操作的技术问题，通过在现有的警用扬声器中增加图像识别设备以及辣椒水喷射设备，用于实现犯罪份子的图像识别以及朝向犯罪份子的辣椒水喷射，从而简化了警务人员的操作，更充分地利用了现有的各种硬件 资源。
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 (8)

  1. 一种通用型警用扬声器，包括由内腔、音圈、磁体、支撑片、振膜和防护罩组成的球顶扬声器架构，所述内腔中内填有吸音材料，所述音圈设置在所述内腔周围，所述磁体设置在所述音圈周围，所述支撑片设置在所述音圈和所述磁体之间，所述振膜设置在所述内腔的顶部，所述防护罩设置在所述振膜振膜；
    其中，所述扬声器还包括水平支架，用于放置内腔、音圈、磁体、支撑片、振膜和防护罩；
    其中，所述水平支架位于警用车辆的车体顶部。
  2. 如权利要求1所述的通用型警用扬声器，其特征在于，还包括：
    图像拍摄组件，设置在所述水平支架上，用于对警用车辆的四周进行图像数据采集以获得高清全景图像。
  3. 如权利要求2所述的通用型警用扬声器，其特征在于：
    所述图像拍摄组件包括四个图像传感器，分别嵌入在所述水平支架的四周，所述图像拍摄组件将所述四个图像传感器各自输出的图像进行拼接以获得所述高清全景图像。
  4. 如权利要求2所述的通用型警用扬声器，其特征在于，还包括：
    主控设备，设置在所述水平支架内，分别与所述球顶扬声器架构以及所述图像拍摄组件连接，用于基于所述图像拍摄组件输出的内容对所述球顶扬声器架构进行控制。
  5. 如权利要求4所述的通用型警用扬声器，其特征在于，还包括：
    辣椒水喷射设备，设置在所述水平支架上，用于吸出警用车辆储存的辣椒水并进行定向喷射；
    对比度增强设备，与所述图像拍摄组件连接，用于接收高清全景图像，对所述高清全景图像执行对比度增强处理以获得增强图像；
    维纳滤波设备，与所述对比度增强设备连接，用于接收所述增强图像，并对所述增强图像执行维纳滤波处理以获得滤波图像；
    面积检测设备，与所述滤波图像连接，用于基于预设人体特征对所述滤波图像执行人体目标检测以获得各个人体子图像，确定每一个人体子图像的像素面积，基于每一个目标的像素面积和所述滤波图像的总像素面积确定每一个目标的面积占比；
    景深检测设备，与所述面积检测设备连接，用于确定在所述滤波图像中，各个人体子图像分别对应各个目标的景深，还基于每一个目标的面积占比和景深确定每一个目标的实体面积；
    图像初筛设备，与所述景深检测设备连接，用于在所述滤波图像中，筛除实体面积小于等于第一面积阈值的各个目标，以获得初筛图像；
    图像再筛设备，与所述景深检测设备连接，用于在所述滤波图像中，筛除实体面积小于等于第二面积阈值的各个目标，以获得再筛图像；其中，所述第二面积阈值大于所述第一面积阈值；
    目标获取设备，分别与所述图像初筛设备和所述图像再筛设备连接，用于将所述再筛图像减去所述初筛图像以获得差异化图像，将所述差异化图像中的剩余目标所对应的人体子图像作为最终人体子图像输出；
    目标分析设备，与所述目标获取设备连接，用于接收所述最终人体子图像，将所述最终人体子图像进行人脸识别以获得目标脸部特征，将所述目标脸部特征与各个犯罪分子面部图像特征进行匹配，匹配成功，则发出识别成功信号，输出匹配到的犯罪分子面部图像特征对应的犯罪分子姓名，并基于所述最终人体子图像在所述差异化图像中的相对位置确定所述喷射方向，全部匹配失败，则发出识别失败信号；
    所述主控设备还分别与所述目标分析设备和所述辣椒水喷射设备连接，用于在接收到所述识别成功信号时，启动所述喷射驱动设备并将所述喷射方向发送给所述辣椒水喷射设备，还用于在接收到所述识别失败信号时，关闭所述辣椒水喷射设备；
    其中，所述主控设备还用于在接收到所述识别成功信号时，基于所述最终人体子图像对应的人体目标在所述差异化图像中的景深确定所述最终人体子图像对应的人体目标距离所述扬声器的实时距离，并根据所述实 时距离调整发送给所述辣椒水喷射设备的喷射力度。
  6. 如权利要求5所述的通用型警用扬声器，其特征在于，还包括：
    实时显示设备，设置在警用车辆的前端仪表盘内，与所述主控设备连接，用于实时显示所述喷射方向和所述实时距离。
  7. 如权利要求6所述的通用型警用扬声器，其特征在于：
    所述实时显示设备还用于实时显示与所述识别成功信号或所述识别失败信号对应的文字信息。
  8. 如权利要求7所述的通用型警用扬声器，其特征在于，还包括：
    喷射云台，与所述辣椒水喷射设备连接，用于调整所述辣椒水喷射设备的喷射方向。
PCT/CN2017/091152 2017-06-06 2017-06-30 通用型警用扬声器 WO2018223459A1 (zh)

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