CN214544579U - Audio and video monitoring device and monitoring system - Google Patents
Audio and video monitoring device and monitoring system Download PDFInfo
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- CN214544579U CN214544579U CN202120904836.XU CN202120904836U CN214544579U CN 214544579 U CN214544579 U CN 214544579U CN 202120904836 U CN202120904836 U CN 202120904836U CN 214544579 U CN214544579 U CN 214544579U
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Abstract
The utility model discloses an audio frequency and video monitoring device and monitored control system, relate to audio frequency and video control technical field, wherein, audio frequency and video monitoring device includes the installing support, video acquisition device and audio acquisition device are all installed on the installing support, the audio signal that audio acquisition device gathered sends to video acquisition device through wired or wireless mode, video acquisition device synthesizes the monitoring data stream with the video signal of its collection and the audio signal of receipt, audio acquisition device adopts the microphone array that four or above microphones are constituteed, the audio signal that every microphone formed all exists with independent channel in the monitoring data stream. The utility model discloses can realize when the video picture reduces or enlargies, use the audio signal fitting sound that the microphone of different quantity gathered to adjust audio signal's directive property and adjust.
Description
Technical Field
The utility model relates to an audio frequency and video control technical field, concretely relates to audio frequency and video monitoring device and monitored control system.
Background
With the development of science and technology, audio and video monitoring is an important part in different industries, such as transportation, public security, emergency, environmental protection, and the like, and in various service window counters, such as banks, telecommunication business halls, government halls, airports, supermarkets, hotels, and the like. The audio and video monitoring system mainly comprises a video acquisition device and an audio acquisition device, wherein the video acquisition device such as a network camera is used for acquiring video signals (or called as image signals), the audio acquisition device such as a microphone is used for synchronously picking up the audio signals and sending the picked audio signals to the video acquisition device, the video acquisition device synthesizes the video signals acquired by the video acquisition device and the audio signals received by the video acquisition device into a monitoring video data stream, and the monitoring camera is connected to a network switch through an 8-core network cable so as to send the monitoring video data stream to a network hard disk video recorder through the network switch.
The current audio-video monitoring system is in the form of a fixed video picture plus a single microphone, and the picture view angle and the range of sound pickup cannot be changed any more whether the video picture is stored on nvr for playback or is directly previewed.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide an audio and video monitoring device and monitoring system, it can realize that the audio signal fitting sound of using the microphone collection of different quantity when the video picture reduces or enlargies to adjust audio signal's directive property and adjust.
The purpose of the utility model is realized by adopting the following technical scheme:
the utility model discloses an audio frequency and video monitoring device, it includes installing support, video acquisition device and audio acquisition device all install in on the installing support, the audio signal that audio acquisition device gathered sends to through wired or wireless mode video acquisition device, video acquisition device synthesizes the monitoring data stream with the video signal of its collection and the audio signal of receipt, the microphone array that audio acquisition device adopted four or more microphones to constitute, every the audio signal that the microphone formed all exists with independent passageway in the monitoring data stream.
In a first aspect of the present invention, as an optional embodiment, the audio collecting device is installed on the video collecting device, and the video collecting device is installed on the mounting bracket.
In the first aspect of the present invention, as an optional embodiment, the video capturing device includes a first body and a first casing installed in the first body, the microphone array is installed in the first casing, a first opening is provided in a position of the first casing corresponding to the microphone, and a first waterproof sound-transmitting film is attached to the first opening.
In the first aspect of the present invention, as an optional embodiment, the audio capturing apparatus further includes a second casing, the microphone is installed in the second casing, the second casing is fixed or detachably installed on the lower side of the video capturing apparatus, and a second opening is provided in a position of the second casing corresponding to the microphone, and a second waterproof sound-transmitting film is attached to the second opening.
In the first aspect of the present invention, as an optional embodiment, the video collecting device and the audio collecting device are respectively installed on the mounting bracket.
In the first aspect of the present invention, as an optional embodiment, the audio collecting device further includes a second housing, the second housing is mounted on the mounting bracket, the microphone is mounted in the second housing, a second opening is provided at a position of the second housing corresponding to the microphone, and a second waterproof sound-transmitting film is attached to the second opening.
In the first aspect of the present invention, as an optional embodiment, the microphone array is a linear microphone array, or/and the video capturing device is a webcam.
The utility model discloses an audio and video monitored control system is disclosed in the second aspect, it includes the utility model discloses the first aspect audio and video monitoring device, network switch and network hard disk video recorder, video acquisition device through wired or wireless mode with network switch carries out the communication, with the control data flow through network switch send to being used for the storage and playing via the network hard disk video recorder of control data flow.
The utility model discloses in the second aspect, as an optional embodiment, audio video monitored control system still includes the server, the server pass through the network with the network switch communication is used for the storage the control data stream.
Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses use four or above microphones to constitute the microphone array, and, the audio signal that every microphone formed all exists with independent channel in the control data stream, thereby when preview or playback video signal, if do not zoom to the video picture, then only play the audio signal that microphone was gathered all the way wantonly, if enlarge the video picture, then play the sound that the audio signal fitting that multichannel microphone gathered formed according to the magnification, thereby when enlarging the image, acquire higher quality sound under the long-range view, promote monitoring quality.
Drawings
Fig. 1 is a schematic diagram of one structure of an audio/video monitoring device according to an embodiment of the present invention;
fig. 2 is a schematic view of another structure of the audio/video monitoring apparatus according to the embodiment of the present invention;
fig. 3 is a schematic diagram of another structure of the audio/video monitoring apparatus according to the embodiment of the present invention;
fig. 4 is a schematic view of the omni-directional characteristic disclosed in the embodiment of the present invention;
fig. 5 is a schematic diagram of a weak directivity disclosed in the embodiment of the present invention;
FIG. 6 is a schematic diagram of strong directivity disclosed in the embodiment of the present invention
Fig. 7 is a schematic structural diagram of an audio/video monitoring system according to an embodiment of the present invention.
In the figure: 10. a video capture device; 20. a microphone; 21. a second housing; 30. a network switch; 40. a network; 50. a network hard disk video recorder; 60. and (4) a server.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict. Except as specifically noted, the materials and equipment used in this example are commercially available. Examples of embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. In the description of the present application, "a plurality" means two or more unless specifically stated otherwise.
In the description of the present application, it should be noted that unless otherwise specifically stated or limited, the terms "connected," "communicating," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a connection through an intervening medium, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example one
The embodiment I provides an audio and video monitoring device. The system mainly comprises a video acquisition device and an audio acquisition device, wherein the video acquisition device preferably adopts a network camera which can realize optical zooming or/and electronic zooming (digital zooming). The audio acquisition device preferably employs a microphone.
The video acquisition device is used for acquiring video signals (or called image signals), the audio acquisition device is used for synchronously acquiring audio signals and sending the acquired audio signals to the video acquisition device, and the video acquisition device synthesizes the acquired video signals and the received audio signals into a monitoring video data stream.
In order to realize the directional adjustment of the audio signals during the zooming (zooming out or zooming in) of the video image, in the preferred embodiment of the present invention, the microphones adopt four or more numbers to form a microphone array, for example, a linear microphone array, and when these audio signals are transmitted to the video acquisition device, they exist in independent channels, i.e. when the audio signals are not previewed or played back, the audio signals are independent, and during the previewing or playing back, the fitting number of the audio signals is adjusted according to whether the video image is zoomed, and it is a conventional technique of the microphone array to fit the audio signals acquired by multiple microphones, and it is not described here.
Illustratively, when the video picture is not zoomed, only the audio signal collected by any microphone is synchronously output, and of course, a certain microphone can also be specified as the output object of the audio signal. When there is scaling of the video picture, the number of microphones participating in the signal processing can be set (for example, by setting the association information table) as needed. When the video picture is enlarged by 2 times, the audio signals collected by a plurality of microphones in the microphone array may be fitted for playing, for example, the number of microphones participating in the audio signal processing is 4, and when the video picture is enlarged by 5 times, for example, the number of microphones participating in the audio signal processing may be set to 8.
The magnification of the video image is the zoom multiple of the video signal, if the video acquisition device simultaneously performs electronic zooming and optical zooming, the zoom multiple is the product of the electronic zooming and the optical zooming, and the zoom multiple can be acquired through the video acquisition device or related playing equipment.
Fig. 4 to 6 show the directivities when the number of microphones participating in the signal processing is 1, 4, and 8, respectively, and thus it can be seen that the larger the zoom factor for the video signal, the larger the number of microphones participating in the signal processing, the stronger the directivity of the audio signal.
Based on this, the utility model discloses an audio frequency and video monitoring device can all install video acquisition device and audio acquisition device on the installing support, realizes fixedly.
In the mounting mode, any one of the following three modes can be adopted:
first, referring to fig. 1, the microphone 20, which is an audio acquisition device, is directly installed in the first housing of the video acquisition device 10, the first housing is installed on the installation bracket, and the two housings are preferably connected by a connection wire, so that the audio signal is transmitted to the video acquisition device in a wired manner.
In a second mode, please refer to fig. 2, the microphone 20 is installed in the second casing 21, and the microphone and the second casing together form an audio collection device; the second housing 21 is fixedly (e.g. by screws) or detachably (e.g. by a snap or slide structure) mounted on the video capture device, e.g. on the underside of the video capture device, preferably connected by a connecting wire, such that the audio signal is transmitted to the video capture device by wire.
In a third mode, referring to fig. 3, the microphone 20 is installed in the second casing 21, the microphone and the second casing together form an audio acquisition device, the second casing 21 and the video acquisition device are respectively installed on the installation support, and the two can be connected through a connection line or a wireless network, so that the audio signal is transmitted to the video acquisition device in a wired or wireless manner.
Because some application scenes of the audio and video monitoring device are outdoor, collected sound is transmitted to the microphone as undamaged as far as possible, and liquid such as rainwater is guaranteed not to invade into the shell to damage the microphone. Although many times, the microphones are mounted on the bottom of the corresponding housing (the first housing of the first mode, and the second housing of the second and third modes), so that the intrusion of rainwater and the like can be avoided to some extent, it is difficult to ensure the intrusion of rainwater when the rainwater is large or accompanied by strong wind. Therefore, in the preferred embodiment of the present invention, an opening for receiving sound of the microphone is provided on the corresponding housing, the microphone is located at the opening, each microphone corresponds to one opening, and one or more waterproof sound-transmitting membranes are provided at each opening, and the waterproof sound-transmitting membranes can be of IP67 level and above.
Specifically, in the first mode, a first waterproof sound-transmitting membrane may be provided at the opening of the first casing, and in the second and third modes, a second waterproof sound-transmitting membrane may be provided at the opening of the second casing.
Example two
The second embodiment discloses an audio and video monitoring system which can be in a similar building structure with the existing audio and video monitoring system.
As shown in fig. 7, the audio/video monitoring system includes the above-mentioned audio/video monitoring apparatus, a network switch 30, and a network hard disk recorder 50, wherein an audio signal collected by an audio collecting apparatus 20 is sent to the video collecting apparatus 10 in a wired or wireless manner, and the video collecting apparatus synthesizes the collected video signal and the received audio signal into a monitoring data stream. The video acquisition device communicates with the network switch through a network cable to send the monitoring data stream to a network video recorder for storing and playing the monitoring data stream through the network switch via a network 40.
In addition, the audio/video monitoring system may further include a server 60, where the server 60 communicates with a network switch through a network, and is configured to receive and store the monitoring data stream through the network switch, and the stored monitoring data stream may be accessed and read by a client, such as a mobile phone client. The server may be a cloud server, or may be a physical server.
For the playback of the monitoring data stream in the network hard disk video recorder or the server, because the audio signals in the monitoring data stream are stored in independent channels (independent spaces), the audio signals collected by different numbers of microphones can still be selected according to the scaling of the video picture for sound fitting, so that the directivity of the audio signals in the playback process is achieved.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the embodiments of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the embodiments of the present invention are all within the protection scope of the embodiments of the present invention.
Claims (9)
1. The utility model provides an audio frequency and video monitoring device, its includes installing support, video acquisition device and audio acquisition device all install in on the installing support, the audio signal that audio acquisition device gathered sends to through wired or wireless mode video acquisition device, video acquisition device synthesizes the monitoring data stream with the video signal of its collection and the audio signal of receipt, its characterized in that, audio acquisition device adopts the microphone array that four or more microphones constitute, every the audio signal that the microphone formed is in all exist with independent channel in the monitoring data stream.
2. The audio-visual monitoring device of claim 1, wherein the audio capture device is mounted on the video capture device, the video capture device being mounted on the mounting bracket.
3. The audio/video monitoring device according to claim 2, wherein the video capturing device includes a first body and a first housing for mounting the first body, the microphone array is mounted in the first housing, and a first opening is disposed in a position of the first housing corresponding to the microphone, and a first waterproof sound-transmitting film is attached to the first opening.
4. The audio/video monitoring device according to claim 2, wherein the audio capturing device further comprises a second housing, the microphone is installed in the second housing, the second housing is fixedly or detachably installed at a lower side of the video capturing device, a second opening is provided at a position of the second housing corresponding to the microphone, and a second waterproof sound-transmitting film is attached to the second opening.
5. The audio-visual monitoring device of claim 1, wherein the video capture device and the audio capture device are mounted separately on the mounting bracket.
6. The audio/video monitoring device according to claim 5, wherein the audio capturing device further comprises a second housing, the second housing is mounted on the mounting bracket, the microphone is mounted in the second housing, a second opening is disposed in a position of the second housing corresponding to the microphone, and a second waterproof sound-transmitting film is attached to the second opening.
7. The audiovisual monitoring device according to any of claims 1-6, characterized in that the microphone array is a linear microphone array, or/and the video capturing device is a webcam.
8. An audio and video monitoring system, characterized in that, it includes the audio and video monitoring device, network switch and network hard disk video recorder of any claim 1-7, the said video acquisition device communicates with said network switch through wired or wireless mode, in order to send the said monitoring data stream to the network hard disk video recorder used for storing and broadcasting the said monitoring data stream via the network through the network switch.
9. The audio-video monitoring system of claim 8, further comprising a server in communication with the network switch over a network for storing the monitoring data stream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120904836.XU CN214544579U (en) | 2021-04-28 | 2021-04-28 | Audio and video monitoring device and monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120904836.XU CN214544579U (en) | 2021-04-28 | 2021-04-28 | Audio and video monitoring device and monitoring system |
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| Publication Number | Publication Date |
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| CN214544579U true CN214544579U (en) | 2021-10-29 |
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| CN202120904836.XU Active CN214544579U (en) | 2021-04-28 | 2021-04-28 | Audio and video monitoring device and monitoring system |
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- 2021-04-28 CN CN202120904836.XU patent/CN214544579U/en active Active
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