CN216700128U - Camera and monitoring equipment - Google Patents

Abstract

The utility model relates to the technical field of security and protection, in particular to a camera and monitoring equipment. The camera comprises a pickup module, a camera shooting module and a processing module, wherein the pickup module comprises a pickup shell and a microphone assembly, and the processing module is respectively and electrically connected with the camera shooting module and the microphone assembly; along the first direction, the sound receiving shell is provided with a closed end and an open end, and the radial dimension of the sound receiving shell is gradually increased from the closed end to the open end; the camera module, the processing module and the microphone assembly are arranged in the sound receiving shell; the first direction is the optical axis direction of the camera module. Set up the radio reception casing in the pickup module, improve through mechanical structure in other words and directionally collect more sound energy, compensate sound remote transmission's great decay, make the pickup module possess the basic condition of remote pickup from the hardware, make things convenient for the camera to obtain the effect of remote pickup, satisfy the remote monitoring demand.

Description

Camera and monitoring equipment

Technical Field

The utility model relates to the technical field of security and protection, in particular to a camera and monitoring equipment.

Background

Video security monitoring equipment plays an important role in security systems, and is widely applied to various scenes. In the using process, the functions of the existing video security monitoring equipment can be provided with sound monitoring, when the video monitoring equipment is used for shooting a remote target, the remote sound monitoring of the target is difficult to carry out, and if the remote voice acquisition is carried out, the monitoring equipment can restore the real situation of a site by using sound and conversation information and combining video images.

The industry adopts more scheme at present just to amplify the filtering through amplifier circuit to audio frequency analog signal, and specifically, sound passes through electret microphone conversion to sinusoidal signal of telecommunication, and later amplifier circuit through manual regulation is amplified to the sinusoidal wave, and the rethread high-pass filter circuit carries out low frequency filtering, then analog output. The scheme has the defects of ineffective sound interference, sound distortion and high operation and maintenance cost, and cannot meet the requirement of remote sound pickup.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a camera and monitoring equipment, which are used for realizing remote pickup to meet the requirement of remote monitoring.

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

a camera, comprising: the pickup module comprises a pickup shell and a microphone assembly, and the processing module is electrically connected with the pickup module and the microphone assembly respectively;

along a first direction, the sound receiving shell is provided with a closed end and an open end, and the radial dimension of the sound receiving shell is gradually increased from the closed end to the open end; the camera module, the processing module and the microphone assembly are arranged in the sound receiving shell; the first direction is an optical axis direction of the camera module.

The application provides a camera sets up the radio reception casing in the pickup module, improves through mechanical structure in other words and orients more sound energy of collecting, compensaties the great decay of sound remote transmission, makes the pickup module possess the basic condition of remote pickup from the hardware, makes things convenient for the camera to obtain the effect of remote pickup, satisfies the remote monitoring demand.

Optionally, the radial cross-section of the sound receiving shell is circular.

Optionally, the radial dimension of the sound receiving shell is 150-200 mm.

Optionally, the inner surface of the sound receiving casing is a parabolic torus, and the parabolic torus protrudes towards the optical axis direction of the camera module.

Optionally, the microphone assembly includes at least two first microphones annularly arrayed around an optical axis direction of the camera module.

Optionally, the microphone assembly comprises at least two second microphone sets;

the at least two second microphone groups are arranged on the peripheral side of the optical axis direction of the camera module and are linearly arrayed along the first direction.

Optionally, each of the second microphone sets includes two second microphones, and the two second microphones are arranged in parallel.

Optionally, the portable electronic device further comprises a speaker assembly disposed in the sound receiving housing, and the processing module is electrically connected to the speaker assembly.

Optionally, the camera module, the processing module and the speaker assembly are sequentially arranged along the first direction, and the camera module is located at an opening of the radio shell.

A monitoring device comprising an external module and a camera as claimed in any one of the above claims, the external module comprising a display in signal connection with the processing module.

Drawings

Fig. 1 and fig. 2 are schematic structural diagrams of a camera according to an embodiment of the present invention;

fig. 3 is a schematic diagram illustrating an operating principle of a camera according to an embodiment of the present invention;

FIG. 4 is a right side view of a radio housing of a video camera according to an embodiment of the present invention;

fig. 5 is a front view of a camera according to an embodiment of the present invention;

fig. 6 is a schematic view of a sound processing principle of a video camera according to an embodiment of the present invention;

fig. 7 is a schematic diagram of an algorithm process for implementing long-distance audiences by using a camera according to an embodiment of the present invention;

fig. 8 is a schematic diagram of an algorithm process for implementing distant hearing by a camera according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a monitoring device according to an embodiment of the present invention;

fig. 10 is a schematic diagram of an operating principle of a monitoring device according to an embodiment of the present invention.

Icon: 11-a radio housing; 12-a microphone assembly; 121-a first microphone; 122-a second microphone; 2-a camera module; 3-a processing module; 4-a speaker module; 5-a display; 6-memory.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a camera, which may be used for security monitoring. The camera specifically comprises a pickup module, a camera module 2 and a processing module 3, wherein the pickup module specifically comprises a pickup shell 11 and a microphone assembly 12, and the processing module 3 is electrically connected with the microphone assembly 12 and the camera module 2 respectively; along the first direction, the sound receiving shell 11 is provided with a closed end N and an open end M, and the radial dimension of the sound receiving shell 11 is gradually increased from the closed end N to the open end M; the camera module 2, the processing module 3 and the microphone assembly 12 are arranged in the sound receiving shell 11; the first direction here is the optical axis direction of the camera module 2.

The pickup module is used for the sound collection of camera, and the radial dimension perpendicular to first direction of radio reception casing 11 wholly is the loudspeaker form, and the opening of loudspeaker all participates in and constitutes the pickup area, can collect more sound energy, compares with prior art, can pick up the sound of more remote department. Moreover, the sound receiving shell 11 with the structure has a directional sound pickup function, so that larger sound which is not required to be picked up at a close position can be quickly attenuated when encountering the outer wall of the sound receiving shell 11, cannot enter the sound receiving shell 11, cannot be captured by the microphone assembly 12, and cannot interfere with sound pickup; the small sound far away in the sound receiving direction range of the sound receiving shell 11 becomes relatively single, and the small sound far away can be picked up by means of gain amplification and the like. The microphone assembly 12 converts the sound signal into an electrical signal and feeds the electrical signal back to the processing module 3.

The camera module 2 is used for image acquisition of the camera, the camera module 2 comprises a lens and a sensor, and the lens is used for focusing an external image on the sensor through an optical system and converting the image into an electric signal to be fed back to the processing module 3.

As shown in fig. 3, the processing module 3 corresponds to a processing module of a camera, which has a minimum unit integrating a camera module and a sound pickup module. The processing module 3 specifically includes an audio core, an audio application layer, a video core and a video application layer, and the sound electrical signal fed back by the sound pickup module and the image electrical signal fed back by the camera module 2 can be subjected to subsequent processing by the processing module. The audio kernel is used for realizing the drive and configuration of relevant audio hardware such as a coder-decoder, and processing the sound with a longer distance to be clearer (equivalent to being heard clearly) through audio technologies (called 3A technologies for short) such as AEC (Acoustic Echo Canceller), ANC (Active Noise Cancellation), AGC (Automatic Gain Control) and the like; the audio application layer can realize the configuration of sound pressure level, noise reduction level and the like. The video kernel is used for realizing the driving and configuration of relevant video hardware such as a zoom lens and the like, and processing images with longer distance to be clearer (equivalent to being seen clearly).

It can be seen that this camera sets up radio reception casing 11 in the pickup module, and the improvement of equivalent to through mechanical structure comes the directional more sound energy of collecting, makes up the great decay of sound long-distance transmission, makes the pickup module possess the basic condition of long-distance pickup from the hardware, makes things convenient for the camera to obtain the effect of long-distance pickup, satisfies the remote monitoring demand.

The camera provided by the embodiment of the application further comprises a speaker module 4 arranged in the radio receiving shell 11, wherein the speaker module 4 is also electrically connected with the processing module 3, and can convert the electric signal output by the processing module 3 into a sound signal to be emitted. In addition, the speaker module 4 can also multiplex the sound receiving shell 11 to realize remote speaker. Compared with the prior art, the speaker module 4 in the embodiment of the present application is hidden in the sound receiving casing 11, so that the structure is more beautiful, and the construction operation is also facilitated.

For the sake of compact structure, in some embodiments, the camera module 2, the processing module 3, and the speaker module 4 are sequentially arranged along the first direction, and the camera module 2 is located at the opening of the radio receiving casing 11, so that the camera module 2 is convenient to acquire an external image. The structure is more compact and integrated, which is beneficial to realizing the miniaturization of the device and can provide more space for the transmission of sound in the sound receiving shell 11.

The radial cross section of the sound receiving shell 11 may be in various shapes, such as rectangular, polygonal, and preferably circular, which is beneficial to sound transmission. Specifically, the radial dimension of the sound receiving shell 11 can be set to be 150-200 mm, and compared with the prior art, the radial dimension can collect more sound energy. According to experimental data, the radio receiver shell 11 can be matched with video monitoring of an ultra-far focal length of more than 15 m.

In addition, the structure of the sound receiving shell 11 can be further optimized to optimize the sound pickup effect; in order to prolong the service life and protect other modules, the radio housing 11 may be designed to be waterproof.

Specifically, the inner surface of the sound receiving casing 11 may be a parabolic ring surface, and the parabolic ring surface protrudes toward the optical axis direction of the camera module 2, and a right view of the whole sound receiving casing 11 can be shown in fig. 4.

As shown in the front view of the camera in fig. 5, the microphone assembly 12 in the embodiment of the present application includes at least two first microphones 121, the at least two first microphones 121 are annularly arrayed around the optical axis direction of the camera module 2 at the closed end N of the sound receiving casing 11, and the sound collected by the sound receiving casing 11 can be captured by the first microphones 121. The number of the first microphones 121 shown in fig. 6 is 8.

It should be understood that when the number of the first microphones 121 is two, the two first microphones 121 are equivalently disposed symmetrically with respect to the optical axis direction of the camera module 2 as a symmetry axis.

Further, the microphone assembly 12 may further include at least one second microphone group disposed on the peripheral side in the optical axis direction of the image pickup module 2. When the number of the second microphone sets is at least two, the at least two second microphone sets are linearly arrayed along the first direction, and can collect the sound entering the sound receiving casing 11 along the first direction. The second group of microphones shown in fig. 2 is three groups.

Specifically, each second microphone group includes two parallel second microphones 122 to better capture sound.

It should be understood that the camera provided in the embodiments of the present application may be provided with only the first microphone group, only the second microphone group, or both the first microphone group and the second microphone group. Moreover, the distance between any two adjacent first microphones 121 (which is equivalent to the included angle between two adjacent first microphones 121 in the annular array) can be adjusted as required, and is not limited; similarly, the distance between any two second microphone sets can also be adjusted according to needs, and is not limited.

Here, the type of the first microphone 121 is not limited, and may be an electret microphone, a silicon microphone, or another type. The type of the second microphone 122 is not limited, and may be an electret, a silicon microphone, or another type.

Specifically, the camera provided by the present application can collect and process sound as shown in fig. 6, and external sound enters from the opening end M of the sound receiving casing 11 to obtain a sound receiving effect; for the sound with longer distance and smaller energy, the sound with larger energy can be collected to the closed end N of the sound receiving shell 11 through the focusing of the sound receiving shell 11, and is easier to be clearly captured by the microphone assembly 12, the microphone assembly 12 converts the collected sound into an electric signal, and then the electric signal is subjected to the processing gain amplification of the operational amplifier and then is sent to the voltage follower, and the voltage follower feeds the signal back to the processing module 3.

Fig. 7 shows a sound processing algorithm for the audio application layer of the processing module 3 to implement long-distance hearing. After the external sound electric signal is input to the audio application layer, an AI noise reduction algorithm is introduced into the audio algorithm, and noise reduction processing is carried out on scenes. Specifically, the audio application layer firstly performs scene selection, and by taking subway scenes and community scene examples, when the sound background is judged to be a community scene, the audio application layer selects a deep learning algorithm and simultaneously positions a sound source; according to empirical data, a deep learning algorithm is utilized and a sound source positioning result is combined to effectively suppress a non-human voice noise source, human voice is extracted, and only effective speaker voice is reserved; when a sound source is positioned, a sound source tracking algorithm is introduced, the voice of a speaker is improved for the extracted voice by means of a voice enhancement algorithm, and the effect that the speaker can hear clearly in a long distance is achieved. When the sound background is judged to be a subway scene, the audio application layer selects a deep learning algorithm and positions a sound source; according to empirical data, a deep learning algorithm is utilized to effectively suppress noise sources of non-human voice, human voice is extracted, only effective speaker voice is reserved, the voice of the speaker is improved for the extracted human voice by means of a voice enhancement algorithm, and the effect that the speaker can hear clearly in a long distance is achieved.

Fig. 8 shows that the audio application layer of the processing module 3 implements a sound processing algorithm for far-range hearing at the audio application layer. Taking a community scene as an example, sound source positioning is carried out while deep learning is carried out; processing the audio signal by adopting a deep learning algorithm according to the empirical data to remove noise, and extracting the required voice; the sound acquired by the preferred microphone in the microphone assembly 12 is selected to be subjected to gain increasing processing by combining the sound source positioning result, and a reverberation suppression algorithm and a noise suppression algorithm are introduced to enhance human voice and achieve the effect of being audible at a long distance.

It should be understood that the above empirical data may be formed by collecting human faces during the work of the camera module 2 to form a human face library, collecting sounds during the work of the pickup module to form a sound library, and matching the human face library with the sound library for those data, so as to match quickly during the monitoring process, and facilitate the later-stage sorting and analysis of the monitored data.

In addition, dangerous word recognition can be set in the processing module 3, relevant dangerous words are collected and screened by the pickup module, dangerous events can be pre-warned in advance, and as the camera can pick up sound remotely, the coverage area of event pre-warning is increased, and the camera has high social value.

In summary, the sound receiving housing 11 is arranged in the sound pickup module of the video camera provided by the embodiment of the present application, which is equivalent to directionally collecting more sound energy through mechanical structure improvement, making up for the great attenuation of the sound long-distance transmission, and enabling the sound pickup module to have the basic condition of long-distance sound pickup from the hardware. Meanwhile, the algorithm of a rear-end audio application layer is improved, an AI noise reduction technology is introduced, directional pickup, pickup enhancement and remote pickup are realized through the algorithms of a 3A algorithm, sound source positioning, background noise elimination, sound source tracking and the like, and the remote monitoring requirement can be met.

Based on the above-mentioned camera, an embodiment of the present application further provides a monitoring device, as shown in a schematic structural diagram of the monitoring device shown in fig. 9, the monitoring device includes an external module and any one of the cameras provided in the above-mentioned embodiments, the external module includes a display 5 in signal connection with the processing module 3, and the display 5 can be used for displaying an image captured by the camera module; the external module may further include a memory, and the memory may specifically include a hard disk and other devices. Referring to the schematic diagram of the working principle of the monitoring device shown in fig. 10, the processing module 3 of the camera processes the audio and video, so that the external image can be clearly transmitted to the display 5 for display, and the external sound and image can be further stored in the memory 6 such as a hard disk, and further processed by an intelligent algorithm in real time and monitored in real time. It should be noted that the memory 6 of the external module is connected to the display 5 by signals, and the image stored in the memory 6 can be transmitted to the display 5 for display. Corresponding to the practical application. The display 5 can play back images stored in the memory 6.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A camera, comprising: the pickup module comprises a pickup shell and a microphone assembly, and the processing module is electrically connected with the pickup module and the microphone assembly respectively;

along a first direction, the sound receiving shell is provided with a closed end and an open end, and the radial dimension of the sound receiving shell is gradually increased from the closed end to the open end; the camera module, the processing module and the microphone assembly are arranged in the sound receiving shell; the first direction is an optical axis direction of the camera module.

2. The camera of claim 1, wherein the radial cross-section of the sound receiving enclosure is circular.

3. The camera of claim 2, wherein the radial dimension of the sound receiving enclosure is 150-200 mm.

4. The camera of claim 2, wherein the inner surface of the sound receiving shell is a parabolic ring surface, and the parabolic ring surface protrudes towards the optical axis direction of the camera module.

5. The camera of claim 1, wherein the microphone assembly comprises at least two first microphones in an annular array about an optical axis of the camera module.

6. The camera of claim 1, wherein the microphone assembly comprises at least two second microphone sets;

the at least two second microphone groups are arranged on the periphery of the optical axis direction of the camera module and are linearly arrayed along the first direction.

7. The camera of claim 6, wherein each of the second microphone sets comprises two second microphones, and wherein the two second microphones are juxtaposed.

8. The camera of any one of claims 1-7, further comprising a speaker assembly disposed within the sound receiving housing, the processing module being electrically connected to the speaker assembly.

9. The camera of claim 8, wherein the camera module, the processing module, and the speaker assembly are sequentially arranged along the first direction, and the camera module is located at an opening of the sound receiving case.

10. A monitoring device, characterized in that it comprises an external module comprising a display in signal connection with the processing module, and a camera according to any one of claims 1-9.

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