CN103607534A - Integrated fisheye camera with seamless intelligent monitoring and alarming functions - Google Patents
Integrated fisheye camera with seamless intelligent monitoring and alarming functions Download PDFInfo
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Abstract
The invention discloses an integrated fisheye camera with seamless intelligent monitoring and alarming functions. The integrated fisheye camera is characterized by comprising an automatic LED (Light Emitting Diode) light supplementing module, a fisheye video acquiring module, an intelligent fisheye video processing module, a multifunctional grading alarm module and a power supply management module, wherein acquired fisheye video is transmitted to the intelligent fisheye video processing module through a connecting flat cable, a movement target in the fisheye video is subjected to detection and confidence coefficient judgment by applying an intelligent fisheye video processing algorithm, video grading storage and grading caution information output are carried out according to a judgment result, and the whole camera is subjected to uninterruptible power supply by adopting the power supply management module. The integrated fisheye camera has the beneficial effect that seamless intelligent monitoring and alarming of a specific region are realized on the premise of a single camera. Due to 180-DEG seamless monitoring, automatic light supplementation, video grading circulating storage, movement target detection and multifunctional grading alarming, the safety performance of monitoring is greatly improved. The integrated fisheye camera is compact in structure and convenient to install due to an integrated design mode; the design and use costs of the integrated fisheye camera can be effectively lowered.
Description
Technical field
The present invention relates to the integrated flake video camera of a kind of multi-function automatic monitoring on a large scale and warning, can realize unit to the round-the-clock automatic monitoring of half spherical space, the place ahead, videograph and moving target classifying alarm function.
Background technology
Video Supervision Technique has played more and more important effect at safety-security area, along with the increase of people to demand for security, video monitoring has progressively entered into average family, and than existing video monitoring system structure, using it as general Indoor Video, there are the following problems:
1) common lens visual field is less, and guarded region is limited, increases camera when increasing cost, has also increased the complexity of system, and inconvenient general user uses.
2) current video monitoring system generally only realizes storage and the playback of video, and the video camera that part possesses motion detecting also just adds simple algorithm to control video storage and do not possess warning function.
3) also there is no in the market suitable unit intelligent monitoring device, as general user, the existing hardware system structure complexity that possesses intellectual analysis function, cost is high, does not reach user's user demand.
4) video data is carried out to real-time analysis and efficient processing, not only need high performance hardware platform, and need efficient Processing Algorithm, the unit product also both effectively not being combined in the market.
5) fish eye lens possesses the visual field of super large, but also bring huge image deformation, in existing fish-eye application, substantially all adopt the method for first proofreading and correct, when increasing operand, image after correction has also lost parts of images information, easily loses potential target.
Summary of the invention
In order to address the above problem, it is a kind of based on the seamless intelligent monitoring of fish-eye super large scope and alarm integrated integrated Camera Design method that the comprehensive general user's of the present invention demand provides, single cover system is realized the place ahead half round-the-clock seamless monitoring in spherical space, and add efficient intelligent algorithm, on high performance DSP platform, realize the detection of the flake moving object in video sequences gathering, and testing result is carried out to confidence level judgement, according to result of determination, realize classifying alarm.Can independently use by unit, also can realize multimachine by TCP/IP Ethernet interface and combine use.
Technical solution of the present invention, a kind of integrated flake video camera that possesses seamless intelligent monitoring and alarm function: comprise LED automatic light-supplementing module, flake video acquiring module, flake video intelligent processing module, multi-functional classification alarm module and power management module form, wherein: flake video acquiring module comprises 183 ° of angle of visual field fish eye lenses, 1/2 cun of cmos image sensor and video front processing module; Flake video intelligent processing module comprises hardware platform and software algorithm.
Described LED automatic light-supplementing module is carried out light filling function automatically according to ambient light, two groups of LED light compensating lamps work alone, when breaking down for one group, start second group of light filling and send information warning, the LED drive circuit of optimal design can guarantee that LED light compensating lamp works in long-acting state.
Described fish eye lens is the bugeye lens that possesses the 183 degree angles of visual field, and this camera lens adopts equidistant projection image-forming principle, facilitates detection and the extraction of target.
Described 1/2 cun of cmos image sensor is large area 4:3 rectangle general image transducer, by demarcating, makes become circular fish eye images be tangential on the long limit of rectangle CCD.
Described video front processing module, carries out filtering, amplification and coding by the picture signal obtaining from cmos image sensor, when being transferred to flake video intelligent processing module, also can be used as ordinary video and exports.
It is that core is carried out system architecture that described flake video intelligent processing hardware platform adopts the picture processing chip TMS320DM642 of TI company, coordinate FPGA, SDRAM, Flash flash memory and various interface controller, can realize the flake video of input is carried out to efficient real-time processing, and by the output of moving object detection result, for driving warning system.To the video of input, adopt circulation memory module to store in SD card, the video that inclusion test is gone out to target locks storage.
Described flake video intelligent process software algorithm comprises the moving object detection based on adaptive updates background subtraction algorithm, and detected result is carried out to confidence level decision algorithm, according to different confidence level result of determination, exports corresponding alarm level.
Described multi-functional classification alarm module possesses the fault alarm of system own and carries out classifying alarm function according to the output level of testing result, and type of alarm has special-purpose malfunction indicator lamp prompting, multistage sound and light alarm and long-range GSM short message alarm.Various type of alarms can user freely arrange, and GSM warning information content is preset in system, and user can set according to the actual requirements.
Described power management module is standalone module, adopts the wide adaptive civil power of 100～240V and the double mode power supply of rechargeable battery, guarantees uninterruptedly monitoring under powering-off state.
Beneficial effect of the present invention: realized the monitoring of single camera super large scope integral intelligent and alarm function, being applicable to very much general domestic consumer uses, possess and install simply, round-the-clock automatic monitoring and various alarm function, greatly improved the security performance of monitoring, integrated design mode configuration is compact, can effectively reduce the design and use cost of product, is well positioned to meet the demand of people to indoor security monitoring.
Accompanying drawing explanation
Fig. 1 is the integrated flake camera structure figure of the present invention's intelligence;
Fig. 2 is LED light compensating lamp layout of the present invention and drive circuit block diagram;
Fig. 3 is DSP flake intelligent video processing platform block diagram of the present invention;
Fig. 4 is moving object detection algorithm flow chart of the present invention;
Fig. 5 is the multi-functional classification caution system of the present invention schematic diagram;
Fig. 6 is power-supply management system structural representation of the present invention.
Embodiment
According to technical scheme, the invention will be further described below:
The present invention adopts modular design philosophy to carry out system, hardware block diagram as shown in Figure 1, mainly comprise fish eye images acquisition module, LED automatic light-supplementing module, flake video intelligent processing module, multi-functional classification alarm module and the several parts of power management module, running software is in DSP Intelligent Processing Platform, detection and the tracking of moving target in the detection of main completion system operating mode and flake video, and the result detecting is carried out to confidence level judgement, the alarm of output different stage drives signal.
1, LED automatic light-supplementing module
In order to guarantee that system possesses round-the-clock function on duty, system arranges independently automatic light-supplementing module, by the brightness of light sensor testing environment light, automatically carries out light filling, guarantees to gather the definition of video.The function that light supplementation lamp module is realized is as follows:
1), by the variation of induced environment light, automatically control the power output of LED lamp;
2), in order to guarantee the life-span of LED lamp pearl, restriction peak power output is rated power 70%;
3) cornerwise two LED lamp pearls are one group, one group of work, and another group is standby, when the LED drive circuit in work breaks down, automatically switches to second group and works on, and export hardware fault information;
As can be seen from Figure 2, light sensor is placed in top or the proceeds posterolateral of video camera, obtain the strength information of ambient light, and be input in control circuit, control circuit is controlled the output intensity of drive current in LED drive circuit according to its signal strength signal intensity, make LED lamp pearl send the light of corresponding power, with the deficiency of compensate for ambient light.When the signal of light sensor output is greater than the threshold value of setting, close LED light supplementation lamp module and make it enter resting state, when the signal of output is less than the threshold value of setting, by 70% power output, carry out LED constant current driving.When LED drive circuit output current occurs extremely, feedback circuit abnormal signal, to control circuit, makes it automatically close current LED lamp group, then starts another group LED, and output equipment failure warning information, points out and safeguard or change simultaneously.
2, fish eye images acquisition module
Adopt 183 ° of circular equidistant projection type fish eye lenses, its major parameter is as follows: the angle of visual field: 2 ω=183 °, focal length:
f'=8.00mm, entrance pupil aperture:
d=2.86mm, back focal distance:
l'
f=19.10mm, consists of 12 lens, adopt the cmos image sensor of 1/2 cun of 4:3, according to fish-eye parameter, by optical simulation, accurately calculate image plane, and cmos image sensor is placed on image plane, make the long limit of circular fish eye images and cmos image sensor tangent, utilize to greatest extent the valid pixel of CMOS, finally adopt laser method to demarcate optical centre: laser beam is by a blank directive camera lens with holes, after each surface reflection of camera lens, the position of careful adjusting laser beam and camera lens, until all hot spots of each surface reflection of camera lens all turn back to transmitting site by aperture, and the interference circle that simultaneously makes folded light beam form is centered close to aperture center, the image plane that can guarantee cmos image sensor and camera lens overlaps completely, collect satisfactory flake video.
Video front processing module gets vision signal by cmos image sensor, and by filtering, amplification and coding, the compound flake video of standard of output Phase Alternation Line system is in flake video intelligent processing hardware platform.
3, the flake video intelligent processing hardware platform based on TMS320DM642
Up-to-date fixed-point calculation DSP in the TMS320DM642 ShiTI C6000 of company series DSP, its core adopts C6416 high-performance digital signal processor, there is extremely strong data processing performance, flexibility and the programmability of height, simultaneously peripheral integrated various abundant interfaces, meet various functional requirement of the present invention completely.As shown in Figure 3, main devices comprises the synchronous dynamic random access memory of 64 of 4M to the structured flowchart of system, can store the pending fish eye images of 32 frame; The flash memory of 8M, for storage running program, possesses start self-starting function; The high speed FPAG chip of Xinlix can be realized osd function, and realizes the unified configuration of hardware system function, and all data energy high-speed and high-efficiencies are processed; Reserved jtag interface, facilitates system software upgrading; The highest 64G SD of SD controller support card, can local storage standards VGA video; The RS232 interface of standard is for exporting the result after processing, and Ethernet interface can be arranged to the machine in IP video camera and carry out long-range use; Power management employing+5V input, then rectification output 3.3V, 1.8V(FPGA with), 1.4V(DM642 with) burning voltage, for each components and parts.
The Functional Design of each critical piece of hardware system is as follows:
1) EMIF port
System the external memory interface of 64, address space is divided into San Ge chip enable district, allow it address space to be carried out to the access of 8,16,32 and 64 bit synchronizations or asynchronous memory, native system arranges San Ge chip enable district CE0, CE1 and CE2, wherein CE0 distributes to the SDRAM bus of 64, and CE1 distributes to Flash memory, UART and the use of FPGA function of 8, and CE2 is the access of FPGA synchrodata.
2) register port
System CE0 enables district and connects the SDRAM bus of 64, by outside PLL driving arrangement, is controlled, and operates in 100MHz, by DM642, controls refreshing of SDRAM.
The low level that system CE1 enables district connects 8M Flash flash memory, is used for storing configuration information and the system working procedure of FPGA.
The high position that system CE1 enables district connects UART(TL16C752) and FPGA asynchronous register, 8 bit address of generation are: 0x90080000-0x90080007, UART is connected to RS-232 driving arrangement.The asynchronous register address of the high bit space of CE1 and corresponding function are as shown in the table:
| Address | Function | Read-write state |
| 0x90080010 | OSD control register | R/W |
| 0x90080011 | DMA LSB limit register | R/W |
| 0x90080012 | DMA MSB limit register | R/W |
| 0x90080013 | Interrupt status register | R |
| 0x90080014 | OIER | R/W |
| 0x90080015 | GPIO direction register | R/W |
| 0x90080016 | GPIO status register | R/W |
| 0x90080017 | Flash page register | R/W |
| 0x90080018 | FPGA translation register | R |
System CE2 enables district and offers FPGA SYN register, mainly realizes the connection of osd function and some peripheral components.
3) coding and decoding video
System adopts SAA7115HL as Video Decoder, and SAA7115HL can be by the I of DM642
2c bus is programmed and is carried out the video decode of various standards.According to the flake video format of front end input, native system is configured to Phase Alternation Line system composite video decoding schema, and the compound flake video of pal standard of input is decoded.
Flake video after system is processed is by the SAA7105 output of encoding, SAA7105 can realize various coding output equally, according to the functional requirement of system, coding result is connected to RGB display unit, by standard socket, provide rgb video to export, for field monitor, use, carry out VGA formatted output, for store video simultaneously.
System is also used FPGA to realize augmented video function, FPGA passes through the video port output video of DM642 to SAA7105 video encoder, and provide FIFOs, the data of video port are mixed with the data of FIFOs, at CE2, enable under the synchronous mode in space, the EMIF by DM642 carries out data access.
4) other port
The Ethernet interface of system, SD card controller are directly controlled by DM642, and RS-232 interface is configured by UART, realize testing result output.
4, adaptive updates background subtraction (Auto-adapted Renewal Background Subtraction:ARBS) moving object detection algorithm
As can be seen from Figure 4, first system carries out initialization after starting, and each parameter preset is set, and then from the video of input, according to parameter preset, gathers a two field picture, the situation of change of computing environment parameter after preliminary treatment, if ambient light is undergone mutation, directly upgrade background, if do not undergone mutation, judge whether to exist background, if there is no background image, by this image setting, be background, gather the second frame and carry out background subtraction computing, if background exists, directly enter background subtraction computing; According to operation result, if there is no target, new images is set to background, carries out next frame; If find target, carry out objective degrees of confidence judgement, according to judged result from RS-232 interface export target level of signal, for driving the warning of different stage; Follow the tracks of and target-marking region simultaneously, carry out video storage locking.
In ARBS algorithm, the change situation of environmental parameter adopts following steps calculate and judge:
The first, background changes gradually.As the light of environment can slowly change along with the time, now must upgrade background b (x, y) every certain hour t.Define a weighting function w (t), arrive context update after the time, background is revised as automatically to the key frame images of new collection;
The second, background changes suddenly.Before and after supposing to change, illuminance meets certain linear relationship, this linear equation is carried out differential and obtains f (x, y) after spatial gradient with background image b (x, y) carry out difference, then judge whether this variation is caused by environmental change: if environment conversion causes, automatically upgrade background, if guarded region target causes, export alarm signal and lock the video of this period storage.
Adaptive background difference algorithm can upgrade background according to the conversion in environment and monitoring image region automatically automatically, no matter has driftlessness, and background all can be upgraded according to the variation self adaptation of environment, guarantees the Stability and veracity of target identification.
5, multi-functional classification alarm module
As can be seen from Figure 5, multi-functional classification alarm module comprises alarm signal input, system setting, signal processing and control circuit and the output of multiple alert mode.Wherein input alarm signal and comprise the fault-signal of system own and target detection classification output signal, outputting alarm mode comprises the prompting of the machine fault message, local sound and light alarm and the alarm of GSM remote handset information in real time.It is as follows that signal is processed the function realizing with control circuit:
1) according to the failure condition of system itself: camera lens is blocked, light compensating lamp fault, camera body vibrations surpass threshold value, start corresponding Special-purpose indicating lamp and point out and pass through the preset short message alarm of the long-range transmission of GSM; When the unexpected strenuous vibration of body is judged to be system and suffers malicious sabotage, start strong acoustooptic and report to the police, utilize gsm module to send preset warning information to default mobile phone simultaneously;
2) after civil power power-off, start rechargeable battery powered, and by the cycle of setting, carry out periodicity and report to the police and the alarm of GSM remote short messages, electric quantity of rechargeable battery starts acousto-optic and continues to report to the police and remote short messages alarm while exhausting soon, after recovery mains-supplied, remove and report to the police and carry out the long-range preset short message prompt of service restoration GSM;
3), when receiving the moving target signal detecting, intensity or the sound and light alarm of according to confidence level judgment criterion, exporting corresponding level signal and increase successively sound and light alarm add the preset SMS alarm of GSM;
4) period and the warning way free setting according to actual needs of reporting to the police;
6, power management module
As shown in Figure 6, power management module comprises the wide voltage civil power of 110～240V under normal circumstances and the double mode power supply of embedded rechargable battery, when civil power is normal, by charging control circuit, automatically rechargeable battery is carried out to charging and discharging protection; When civil power disconnects, rechargeable battery while maintaining light compensating lamp standard-sized sheet full machine work approximately 8 hours.
Claims (8)
1. an integrated flake video camera that possesses seamless intelligent monitoring and alarm function, it is characterized in that: adopt modular design philosophy, comprise fish eye images acquisition module, LED automatic light-supplementing module, flake Video processing hardware module, flake Video processing software algorithm module, multi-functional classification alarm module and power management module, wherein fish eye images acquisition module is exported compound flake video and is input in high speed flake Video processing hardware module by connecting winding displacement, high speed flake vision hardware processing module is realized and being judged obtaining detection and the confidence level of moving target in video by flake video frequency motion target detection algorithm software module, and carry out video spatial scalable circulation storage and drive alarm module alarm according to Output rusults.
2. the integrated flake video camera that possesses seamless intelligent monitoring and alarm function according to claim 1, it is characterized in that: the cmos image sensor that adopts 183 degree flake imaging lens and 1/2 inch, the compound flake video of the vision signal of obtaining outputting standard after video front treatment system is processed, is input in DSP flake vision hardware processing module by connecting winding displacement.
3. the integrated flake video camera that possesses seamless intelligent monitoring and alarm function according to claim 1, it is characterized in that: with the LED of four 1W, form two groups of light compensating lamps, LED control module has following function: another group of one group of work of two groups of light compensating lamps is standby, current use light compensating lamp group breaks down and automatically starts second group, simultaneously alarm; Two groups of light compensating lamps all adopt the highest 70% power constant current to drive, and possess automatic light filling function.
4. the integrated flake video camera that possesses seamless intelligent monitoring and alarm function according to claim 1, is characterized in that: adopting the Multi-media image processing chip TMS320DM642 of TI company is that core is carried out system architecture; Input video decoder and output video encoder carry out the encoding and decoding of normal video; The fpga chip of Xilinx XC2S300E is realized at a high speed and being deposited and osd function; 4M*64bit synchronous dynamic data storage (SDRAM) can be realized the storage of 32 two field pictures; 8M*Flash program storage is for storage system program; Video data adopts the VGA video circulation storage of 640 * 480 resolution, possesses key video sequence lock function, and the maximum 64G SD card of supporting of SD card controller, can preserve the video of nearest 40 hours; Ethernet controller can transmit by video at a distance, realizes IP camera function; RS232 port carries out the output of video testing result.
5. the integrated flake video camera that possesses seamless intelligent monitoring and alarm function according to claim 1, is characterized in that: the self adaptation after application enhancements dynamically updates background subtraction (ARBS) algorithm the moving target in fish eye images is detected; Set up confidence level decision criteria and carry out the confidence level judgement of testing result, and export classification result of determination in multi-functional classification alarm module.
6. the integrated flake video camera that possesses seamless intelligent monitoring and alarm function according to claim 1, it is characterized in that: sound and light alarm and SMS alarm function are provided, be specially: the fault alarm of system own, after comprising power-off, periodically report to the police, video blank screen is reported to the police, and light compensating lamp fault alarm and body vibrations are reported to the police; According to the confidence level Output rusults that detects target, carry out classifying alarm.
7. the integrated flake video camera that possesses seamless intelligent monitoring and alarm function according to claim 1, it is characterized in that: warning function comprises onsite alarming and long-range GSM short message alarm, wherein onsite alarming comprises acousto-optic classifying alarm and Special-purpose indicating lamp warning; Remote alarm sends presupposed information by GSM network remote and carries out alarm to default mobile phone.
8. the integrated flake video camera that possesses seamless intelligent monitoring and alarm function according to claim 1, it is characterized in that: adopt the wide power voltage supply of 110V～240V and built-in rechargeable battery power supply, adopt under normal circumstances mains-supplied, and by charging circuit, battery is carried out to automatic charging management, after power-off, rechargeable battery can guarantee that in situation that light compensating lamp opens, full machine works approximately 8 hours.
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Application publication date: 20140226 |