CN202077131U

CN202077131U - Video monitor system based on sound positioning

Info

Publication number: CN202077131U
Application number: CN2010202610589U
Authority: CN
Inventors: 弭强
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-16
Filing date: 2010-07-16
Publication date: 2011-12-14
Anticipated expiration: 2020-07-16

Abstract

The utility model relates to a video monitor system based on sound positioning, wherein two or more than two microphones with different plane or space orientations are used as a sound gatherer to acquire sound. The relative position of each microphone in the gatherer is fixed and labeled to distinguish; the space position of a sound source can be uniquely determined according to the time difference and sound intensity difference of sound acquired by different microphones; and the pick-up head can be controlled to rotate to find an object and carry out tracking shooting to the object according to the position information. Temperature has influence on the sound propagation velocity, thus correction can be provided for the system according to the acquired temperature value, and the system precision is raised.

Description

Video monitoring system based on sound localization

Affiliated technical field

The utility model relates to the field of carrying out various monitoring, videograph and IMAQs such as security protection in modes such as video, images.Be particularly related to a kind of video monitoring system based on sound localization.

Background technology

At present, known video monitoring is to be constituted by IMAQ part, storage area and hop.IMAQ wherein partly mainly contains dual mode: a kind of is to adopt the fixing camera mode; A kind of is the mode that adopts uniform rotation scanning.Also have a small amount of mode of image processing that adopts to catch dynamic object, realize tracing and monitoring.These modes all have drawback separately, and wherein preceding dual mode can not be realized the dynamic tracking of target; Though a kind of tracking that can realize target in back, because therefore conduct monitoring at all levels simultaneously exists two problems: the one: the problem that whether can find target at the very start; The 2nd, the mode tracking target of image processing is arranged, very high to the requirement of data treatment facility, cost strengthens.

Summary of the invention

In order to overcome the deficiency of existing video monitoring system, the inventor designs and has invented a kind of video monitoring system based on sound localization, form by two or more microphones and rotary image acquisition device, this system comprise two or more on the plane or the space difference towards microphone as sound collector, the intensity difference and the time difference of the sound that receives according to different microphones, owing to receive the position relative fixed of the microphone of sound, therefore just can determine the position of sound generation source with respect to sound collector, turn to thereby can control camera, reach the purpose of effective tracking target.

The technical scheme that its technical problem that solves the utility model adopts

This device by be equipped with two or more on the plane or the space difference towards microphone gather sound as sound collector, the relative position of each microphone in the collector line label of fixedly going forward side by side is distinguished, gather the time difference and the sound intensity of sound according to different microphones, locus that can unique definite sound source, and target is carried out track up according to this positional information may command camera.Because temperature is influential to the propagation velocity of sound, therefore can install residing ambient temperature according to this, obtain the accurate propagation velocity of sound under this temperature, thereby, improve this system accuracy for the accurate localization of sound source of this system provides correction.

The beneficial effects of the utility model

This device can be used as the part of videos such as security protection, monitoring, image capturing system, and control chart finds target and carry out real-time tracking as collecting part, also can be used as the system that other can position by sound.This apparatus structure is simple, and is with low cost, is adapted at using in people's daily life promoting.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the utility model principle schematic.

Fig. 2 is this apparatus structure composition diagram.

Fig. 3 is the structure chart of this device and traditional monitoring mode complementation.

Fig. 1 expresses the situation of two microphones 1,2, sound source to two microphone Wei L1 and L2 apart from wind, because the distance of L1 and L2 is different, therefore same sound source arrives the asynchronism(-nization) of two microphones, two microphones collect to such an extent that intensity of sound is also different, according to above 2 or, analogize during a plurality of microphone wherein with can not carrying out the differentiation of sound source position.

Fig. 2 is the structural representation of this device, the position of still image collecting device support and sound collector, rotatable image capture device is installed on the image capture device support, the sound source position that can determine by sound collector just, realization of goal is directed to be gathered and follows the tracks of the control image capture device to detecting.

Fig. 3 is that this device and traditional monitoring mode are realized complementary structure chart, can prevent to utilize sound misguidance image capture device to turn to.

Embodiment

According to above-mentioned description of drawings, two or more microphone fixed spaces position, make the dimensional orientation of the resolution sound source of its energy maximal accuracy, the fixing position of sound collector and IMAQ support, thereby can realize unique tracking of controlling image capturing system to target accurately, can combine with traditional images acquisition controlling pattern, both can prevent to utilize the image capture device of this device of sound misguidance to turn to, can remedy above-mentioned two problems in traditional acquisition mode again.

Claims

1. video monitoring system based on sound localization, form by two or more microphones and rotary image acquisition device, it is characterized in that: this system comprise two or more on the plane or the space difference towards microphone as sound collector, position relative fixed between each microphone, the time difference that the same sound source that the different microphones of foundation collect is sounded and the difference of sound intensity, the control camera carries out track up to target.

2. the video monitoring system based on sound localization according to claim 1 is characterized in that: have distance at interval between each microphone.