CN201037948Y - Video frequency flame detecting device with automatic zooming property - Google Patents
Video frequency flame detecting device with automatic zooming property Download PDFInfo
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- CN201037948Y CN201037948Y CNU2007200683352U CN200720068335U CN201037948Y CN 201037948 Y CN201037948 Y CN 201037948Y CN U2007200683352 U CNU2007200683352 U CN U2007200683352U CN 200720068335 U CN200720068335 U CN 200720068335U CN 201037948 Y CN201037948 Y CN 201037948Y
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Abstract
The utility model provides a video flame detecting device with automatic scorch property and consists of a CCD imaging unit, a DSP control unit and a motor control unit. The CCD imaging unit consists of an infrared imaging optical frame group(comprising an infrared filter lens, a scorch lens and a focusing lens) and a CCD integrated camera. The DSP control unit adopts a DSP chip as the core component and identifies early flame by analyzing classical spectrum, lightning, vein, flame core, shape of flame zone, space time, historical dynamic state, etc. of real time image of fire flame. The motor control unit comprises a scorch motor, a focusing motor and a motor control module, the unit is controlled by a stepping motor control circuit and drives the scorch lens and the focusing lens to regulate position, and then automatic scorch of the video flame detecting device can be realized. The utility model can lockup combustion source timely and accurately and provides factor for early fire discovering and fire extermination of large space building fire.
Description
Technical field
The utility model belongs to the fire prevention field, is specifically related to a kind of video flame sniffer with autozoom performance, can solve the contradiction between volumed space building fire safety evaluating supervising device early fire detection medium sensitivity and the reliability.
Background technology
In the design of traditional image-type fire detector that is applicable to volumed space building early fire detection device; the principle that will follow for the type selecting of detector comprises: actual detection distance, the protection angle of detector and the setting angle of detector, determine field angle, detection range and bearing accuracy according to the difference of burning things which may cause a fire disaster size, the difference of lens focus.The size of general CCD image-generating unit camera lens, protection angle, burning things which may cause a fire disaster rule of thumb is worth and preestablishes; because the size and the place of burning things which may cause a fire disaster be can not determine when fire took place; if far-end breaking out of fire at effective detection range; it is less to focus the sniffer display pixel; cause the fire wrong report easily, influence the reliability of fire detecting and alarm.
At video flame survey focus the device response time slow, bearing accuracy is low, cause deficiency such as fire wrong report, the video flame sniffer with autozoom performance that this paper proposes easily.This device has been broken the method that traditional rule of thumb value is located, utilize 22 times of optical loupes heads of autozoom, with digital ccd image sensor as the sense as device, the focusing evaluation function of utilization dsp chip images acquired information and calculation element, according to certain optimized Algorithm controlling and driving stepper motor, the position of regulating device optical lens group, focal length be focusing automatically in f=3.5mm～91mm scope, thereby makes device output distinct image signal.If burning things which may cause a fire disaster is far away apart from camera lens, and burning things which may cause a fire disaster is less, then diminishes automatically from the zoom lens control device focal length, and it is big that the visual angle becomes, and the imaging of fire plume also will become greatly on the picture plane, can better position burning things which may cause a fire disaster; If burning things which may cause a fire disaster is nearer apart from camera lens, and fire plume is bigger, and then the Automatic zoom lens focusing device focal length automatically becomes big, and the visual angle diminishes, and the fire plume imaging will diminish on as the plane, can in time, accurately find out fire location.
Summary of the invention
It is the video flame sniffer with autozoom performance that the purpose of this utility model is to provide a kind of, and this device has reliable performance, can in time, accurately lock burning things which may cause a fire disaster, thereby the early detection fire puts out fire in early days in the volumed space building fire.
What the utility model proposes has a video flame sniffer from the zoom performance, is made up of CCD image-generating unit, DSP control module and motor control unit.Fig. 1 is its structured flowchart, and Fig. 2 is its structure principle chart.Wherein, through connecting to form, the infrared imaging optical lens group 11 is here connected to form by infrared filtering lens 111, zoom lens 112 and condenser lens 113 CCD image-generating unit 1 successively by infrared imaging optical lens group 11 and CCD integrated camera 12.The infrared filtering lens can effectively be eliminated the device wrong report that causes owing to environmental interference signals such as daylight lamp, daylight, candle, moonlight, guarantee the reliability of image-type fire detecting and alarm.
DSP control module 2 is connected to form through circuit by video port 21, digital I/O 22, UART passage 23 and ethernet physical layer 24.DSP control module 2 with dsp chip as core devices, the selection of the collection of image information, calculating, control signal and the generation of control signal are all carried out in this unit, by analyzing typical frequency spectrum, stroboscopic, texture, inner cone, flame district shape, space-time, the historical dynamic dispatching feature of fire disaster flame on real-time imaging, reach the purpose of identification incipient fire.
Motor control unit 3 is by motor control module 31, zoom motor 32 and focus on motor 33 and connect to form through circuit.
CCD integrated camera 12 in the CCD image-generating unit 1 is connected with video port 21 in the DSP control module 2, and the digital I/O 22 in the DSP control module 2 is connected with motor control module 31 in the motor control unit 3; Zoom motor 32 in the motor control unit 3 is connected with zoom lens 112 in the CCD image-generating unit 1, drives zoom lens 112, focuses on motor 33 and is connected with condenser lens 113, driving condenser lens 113.
Device is connected with fire safety evaluating control center by UART passage 23, perhaps is transferred to disaster assistance command centre by ether Physical layer 24.
The utility model combines the autozoom technology with the video flame Detection Techniques, can promptly and accurately lock burning things which may cause a fire disaster.When fire takes place, flame image sees through the infrared imaging optical lens group 11 of sniffer front end CCD image-generating unit 1, the flame image signal through after the inhibition of infrared filtering lens 111 physical means that ccd image sensor will be sensed becomes electric signal, outputs to image signal DSP control module 2 by CCD integrated camera 12.DSP control module 2 is by digital I/O22 starter motor control module 3, burning things which may cause a fire disaster is smaller in effective detection range, motor control module 31 drives zoom motor 32 adjustment zoom lens 112 and turns focal length automatically down, focuses on motor 33 driving condenser lenses 113 burning things which may cause a fire disaster is focused on the CCD photo-sensitive cell more clearly; Otherwise, if fiery plumage is bigger in effective detection range, the fire coordinate is inaccurate, motor control module 31 drives zoom motor 32 and adjusts zoom lens 112 automatically with the focal length accent greatly, focus on motor 33 driving condenser lenses 113 and focus, thereby make the integrated camera 12 of CCD export fire image signal clearly.The signal of fire image clearly that DSP control module 2 will collect is transferred to fire safety evaluating control center device or is transferred to disaster assistance command centre by ethernet physical layer 24 through UART passage 23, after information Recognition and Flame Image Process, confirm that fire takes place.Fire safety evaluating control center device starts automatic fire control big gun extinguishing device, seeks automatically and decides burning things which may cause a fire disaster, aims at burning things which may cause a fire disaster and puts out a fire.
The utility model utilizes digital ccd image sensor as feeling as device, the focusing evaluation function of utilization dsp chip images acquired information and calculation element, controlling and driving stepper motor, the position of regulating device optical lens group, make the device imaging clear, thereby realize focusing automatically.To the accuracy and the real-time of fire source probing, make its application in the volumed space building early fire detection have broad application prospect.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model.
Fig. 2 is a structure principle chart of the present utility model.
Number in the figure: 1 is the CCD image-generating unit, and 2 is the DSP control module, and 3 is motor control unit, 11 is the infrared imaging optical lens group, and 12 is the CCD integrated camera, and 111 is the infrared filtering lens, 112 is zoom lens, and 113 is condenser lens, and 21 is video port, 22 is digital I/O, 23 is the UART passage, and 24 is the ether Physical layer, and 31 is motor control module, 32 is the zoom motor, and 33 for focusing on motor.
Embodiment
Details are as follows for preferred embodiment of the utility model:
1, infrared imaging optical lens group adopts 22 times of zoom lens, zooming range 3.6～79.2mm.
2, DSP control chip TMS320M642 is as core devices, work dominant frequency 720MHz, processing power 5760MIPS.
A, McASP: the multichannel voice frequency serial ports is used for received image signal.
B, IIC:PTC real-time clock provide real-time information.
C, external memory interface EMIF, but the sheet external memory space by EMIF actual access 64 Mbyte.
D, digital I/O:8 road open into, the 8 road leave.
E, PCI: local bus extended mode.
F, UART: universal asynchronous serial transmitting-receiving connects device.
3, motor control module 31 adopts three-phase unipolarity controllor for step-by-step motor QA748036.
4, zoom motor 32 and focusing motor 33 adopt three-phase six-beat stepper motors.
Connect the traditional thread binding required device that promptly gets by shown in Figure 2.
When fire takes place, flame image sees through the infrared imaging optical lens group of sniffer front end CCD image-generating unit, the flame image signal through after the inhibition of infrared filtering lens physical means that ccd image sensor will be sensed becomes electric signal, outputs to image signal DSP control module by the CCD integrated camera.In effective detection range, the DSP control module is by digital I/O starter motor control module, if burning things which may cause a fire disaster is smaller, motor control module drives zoom motor adjustment zoom lens and turns focal length automatically down, focuses on the motor-driven condenser lens burning things which may cause a fire disaster is focused on the CCD photo-sensitive cell more clearly; Otherwise, if fiery plumage is bigger in effective detection range, fiery coordinate is inaccurate, and motor control module drives the zoom motor and adjusts zoom lens automatically with the focal length accent greatly, focus on the motor-driven condenser lens and focus, thereby make the integrated camera of CCD export fire image signal clearly.The signal of fire image clearly that the DSP control module will collect is transferred to disaster assistance command centre through the UART channel transfer to fire safety evaluating control center device or by ethernet physical layer, after information Recognition and Flame Image Process, confirm that fire takes place.Fire safety evaluating control center device starts automatic fire control big gun extinguishing device, seeks automatically and decides burning things which may cause a fire disaster, aims at burning things which may cause a fire disaster and puts out a fire.
Claims (2)
1. video flame sniffer with autozoom performance, it is characterized in that forming by CCD image-generating unit, DSP control module and motor control unit, wherein, through connecting to form, the infrared imaging optical lens group (11) is here connected to form by infrared filtering lens (111), zoom lens (112) and condenser lens (113) CCD image-generating unit (1) successively by infrared imaging optical lens group (11) and CCD integrated camera (12); DSP control module (2) is connected to form through circuit by video port (21), digital I/O (22), UART passage (23) and ethernet physical layer (24); DSP control module (2) with dsp chip as core devices; Motor control unit (3) is connected to form through circuit by motor control module (31), zoom motor (32) and focusing motor (33);
CCD integrated camera (12) in the CCD image-generating unit (1) is connected with video port (21) in the DSP control module (2), and the digital I/O (22) in the DSP control module (1) is connected with motor control module (31) in the motor control unit (3); Zoom motor (32) in the motor control unit is connected with zoom lens (112) in the CCD image-generating unit (1), drives zoom lens (112), focuses on motor (33) and is connected with condenser lens (113), driving condenser lens (113).
2. the video flame sniffer with autozoom performance according to claim 1 is characterized in that this device is connected with fire safety evaluating control center by UART passage (23), perhaps is transferred to disaster assistance command centre by ether Physical layer (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200683352U CN201037948Y (en) | 2007-03-29 | 2007-03-29 | Video frequency flame detecting device with automatic zooming property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200683352U CN201037948Y (en) | 2007-03-29 | 2007-03-29 | Video frequency flame detecting device with automatic zooming property |
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| Publication Number | Publication Date |
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| CN201037948Y true CN201037948Y (en) | 2008-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007200683352U Expired - Fee Related CN201037948Y (en) | 2007-03-29 | 2007-03-29 | Video frequency flame detecting device with automatic zooming property |
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| Country | Link |
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| CN (1) | CN201037948Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016019537A1 (en) * | 2014-08-07 | 2016-02-11 | 深圳市大族激光科技股份有限公司 | Far infrared imaging lens set, objective lens and fire source detector |
| CN108389352A (en) * | 2018-03-14 | 2018-08-10 | 青岛市光电工程技术研究院(中国科学院光电研究院青岛光电工程技术研究中心) | Fire source probing method and device |
| CN109035677A (en) * | 2018-09-03 | 2018-12-18 | 安徽众高信息技术有限责任公司 | A kind of security protection video flame detector |
| CN113299035A (en) * | 2021-05-21 | 2021-08-24 | 上海电机学院 | Fire identification method and system based on artificial intelligence and binocular vision |
-
2007
- 2007-03-29 CN CNU2007200683352U patent/CN201037948Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016019537A1 (en) * | 2014-08-07 | 2016-02-11 | 深圳市大族激光科技股份有限公司 | Far infrared imaging lens set, objective lens and fire source detector |
| CN108389352A (en) * | 2018-03-14 | 2018-08-10 | 青岛市光电工程技术研究院(中国科学院光电研究院青岛光电工程技术研究中心) | Fire source probing method and device |
| CN109035677A (en) * | 2018-09-03 | 2018-12-18 | 安徽众高信息技术有限责任公司 | A kind of security protection video flame detector |
| CN113299035A (en) * | 2021-05-21 | 2021-08-24 | 上海电机学院 | Fire identification method and system based on artificial intelligence and binocular vision |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI BEIAN INDUSTRY CO., LTD. Free format text: FORMER OWNER: SHANGHAI FIRE RESEARCH INSTITUTE OF MINISTRY OF PUBLIC SECURITY Effective date: 20080926 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080926 Address after: No. 601 south two road, Shanghai, Zhongshan: 200032 Patentee after: Shanghai Beian Industrial Co., Ltd. Address before: No. 601 south two road, Shanghai, Zhongshan: 200032 Patentee before: Shanghai Fire Inst., Ministry of Public Security |
|
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Min Yonglin Inventor after: Xue Lin Inventor after: Li Jianzhong Inventor after: Hong Yingzheng Inventor after: Chen Wei Inventor after: Ji Zhigang Inventor after: Wang Pingping Inventor before: Min Yonglin Inventor before: Xue Lin Inventor before: Li Jianzhong Inventor before: Hong Yingzheng Inventor before: Chen Wei Inventor before: Ji Zhigang Inventor before: Wang Pingping |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080319 Termination date: 20150329 |
|
| EXPY | Termination of patent right or utility model |