CN201590866U - Embedded passenger flow analysis device - Google Patents
Embedded passenger flow analysis device Download PDFInfo
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- CN201590866U CN201590866U CN200920351718XU CN200920351718U CN201590866U CN 201590866 U CN201590866 U CN 201590866U CN 200920351718X U CN200920351718X U CN 200920351718XU CN 200920351718 U CN200920351718 U CN 200920351718U CN 201590866 U CN201590866 U CN 201590866U
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Abstract
The utility model relates to an embedded passenger flow analysis device based on a DSP (digital signal processor). The embedded passenger flow analysis device is mounted in a multi-channel passenger flow analyzing system and comprises a CPU, a image decoder and a FPGA co-processing unit, wherein the image decoder receives video analog signals acquired by a camera and outputs the signals to a DSP of the CPU for analysis; and the CPU sends the processed and analyzed data to the FPGA co-processing unit for auxiliary calculation. The analysis and processing procedure of the embedded passenger flow analysis device is completed by the DSP, thereby reducing pressure of a server; by handing over complicate work to the FPGA module, multi-channel video analysis in a real-time manner can be realized; the embedded passenger flow analysis device can be combined with the original monitoring system, and no special camera is needed to be replaced or added; and at the same time, passenger flow in any directions among multiple directions can be counted.
Description
Technical field
The utility model relates to a kind of technical field of video processing, specifically a kind of embedded passenger flow analysing device based on DSP
Background technology
Along with the extensive use of video monitoring system and the maturation of computer vision technique, be installed on the station, the airport, the exhibition center, the simple writing function of sowntown camera monitoring system can not be satisfied the demand.Intelligent, real-time has become inevitable.Excavate the useful information in the monitoring video, be used for safety in production, market analysis has progressively been moved towards to use.Wherein, the passenger flow statistical system based on video analysis is good example.
Passenger flow analysing is by obtaining the passenger flow statistics of the contrast between trend and different site over time, disclose getting in touch between itself and market operation strategy, marketing technology and internal control, objectively the existing benefit of promoting is assessed, be gerentocratic security monitoring, operation management, decision-makings such as service planning provide effective foundation.Existing passenger flow statistical method mainly contains artificial counting, infrared ray and video analysis technology.
Based on active or passive infrared passenger flow analysing device, its shortcoming is: the people who enters continuously can only be identified as one, and error rate is higher; Can not distinguish turnover; Discrimination is low, can't distinguish people and other object.There is certain application at the station, is unsuitable for the relatively poor places of controlled such as market.
Chinese patent (application number: 200610027593.6) disclose a kind of video passenger flow analysing terminal that can two-way statistics passenger flow.Camera is by the video input port of vision cable connection control circuit unit in this design, and control circuit unit connects computer the corresponding interface that the passenger flow analysing module is housed by Ethernet interface or serial ports, and processor is imported the passenger flow analysing module with vision signal.After the passenger flow analysing resume module, return processor, processor storage or forwarding result.There is following shortcoming in this system:
Video camera is installed harsh, can only shine vertically downward with 90 ° of angles;
1. the regulation setting height(from bottom) adopts special-purpose camera, can not be blended in original supervisory control system;
2. the rig camera to common setting angle can't carry out demographics;
3. can only realize two-way passenger flow statistics;
4. can only do the demographics of one road video input;
5. can not extract the abnormal motion behavior;
6. analysis module is present in PC, causes big pressure to server.
Summary of the invention
At above shortcomings part in the prior art, the technical problems to be solved in the utility model provides the embedded passenger flow analysing device based on DSP that a kind of stream of people to any a plurality of directions carries out statistical counting, can realize the high accuracy identification that many people pass in and out simultaneously.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
The utility model is installed in the multichannel passenger flow analysis system based on the embedded passenger flow analysing device of DSP, comprise: CPU, image decoder and FPGA association processing unit, wherein: image decoder receives the video analog signal of camera collection, and the DSP digital signal processing module that exports CPU to carries out analyzing and processing; The data that CPU obtains above-mentioned analyzing and processing are delivered to FPGA association processing unit and are assisted calculating.
Described FPGA assists processing unit to have the data buffering module, its input links to each other with the DSP digital signal processing module by the multiple data channel, and the output of data buffering module returns and is connected to the DSP digital signal processing module by having noise reduction process module, data segmentation module, unit conversion module, data extraction module and result to return module in turn; Described DSP digital signal processing module carries out two-way the connection with safe unit; Described DSP digital signal processing module also links to each other with the wireless transmission unit that the data wireless after the analyzing and processing is transferred to database server; Described DSP digital signal processing module is connected to ethernet module; Described DSP digital signal processing module is connected to the input-output unit of be used to report to the police output or ginseng input number; Described DSP digital signal processing module is connected to the indicating circuit that is used for the display system operating state.
The utlity model has following beneficial effect and advantage:
1. analyzing and processing is finished by DSP, alleviates server stress, and server can connect up to ten thousand passenger flow statistics terminals in theory;
2. give FPGA module with the loaded down with trivial details work of complexity, realize real-time multi-channel video analysis;
3. be blended in original supervisory control system, need not to change or add dedicated video camera;
4. video camera is installed odd jobs, not must limit apart from ground 2.5-4m in the porch by the installation site.The video camera setting angle is not subjected to shine restriction vertically downward;
5. the user can the self-defined stream of people add up direction, can carry out statistical counting to the stream of people of any a plurality of directions simultaneously;
6. the high accuracy identification that many people pass in and out simultaneously;
7. provide warning function for abnormal motion track and long-time the stop;
8. special occasions can be used GPRS or wireless industrial module, saves wiring.
Description of drawings
Fig. 1 is the utility model connection layout;
Fig. 2 is the utility model structured flowchart;
Fig. 3 is an inner FPGA system architecture diagram of the present utility model.
Embodiment
As shown in Figure 1, the utility model is applied in the multichannel passenger flow analysis system based on the embedded passenger flow analysing device of DSP, realizes a plurality of input video streams are carried out the demographics of real-time multidirectional, multi-angle.The multichannel passenger flow analysis system is made up of multichannel camera, passenger flow analysing device, database server and client browser.Camera collection video input video analyzer, passenger flow analysing device are with result of calculation reported data storehouse server, and client browser Query Database server obtains passenger flow statistics information.
As shown in Figure 2, the utility model comprises CPU, image decoder and FPGA association processing unit, wherein: image decoder receives the video analog signal of camera collection, and the DSP digital signal processing module that exports CPU to carries out analyzing and processing; The data that CPU obtains above-mentioned analyzing and processing are delivered to FPGA association processing unit and are assisted calculating.
As shown in Figure 3, FPGA association processing unit comprises the data buffering module, its output links to each other with the DSP digital signal processing module by the multiple data channel, and the output of data buffering module links to each other with the DSP digital signal processing module by having noise reduction process module, data segmentation module, unit conversion module, data extraction module and result to return module in turn.
As shown in Figure 2, except that the DSP digital signal processing module, CPU inside also has memory modules SDRAM and data program memory module, i.e. flash memory FLASH;
In order to guarantee the copyright safety of system, guarantee hardware system whole world uniqueness, prevent that software systems from being plagiarized, the DSP digital signal processing module is connected to safe unit.
The DSP digital signal processing module also links to each other with wireless transport module, so that the data wireless after its analyzing and processing is transferred to database server, uses for client browser;
The DSP digital signal processing module can also be connected to ethernet module, so that use this device in local area network (LAN);
Described DSP digital signal processing module is connected to the output output unit, and be used for reporting to the police output or ginseng input number are done mandatory setting and parameter selection to system;
Described DSP digital signal processing module is connected to indicating circuit, is used for the operating state of display system.
In the present embodiment, the DSP digital signal processing module is selected the TMS320DM642 type of the TI of Texas Instruments for use.
The utility model is based on said structure, can realize a plurality of input video streams are carried out the demographics of real-time multidirectional, multi-angle.The utility model adopts the DSP platform to merge embedded technology and computer vision technique, and CPU is finished main analyzing and processing task, and FPGA association processing unit connects the DSP digital signal processing module by the multiple data channel and finishes auxiliary calculation task.
FPGA is the inside configuration main modular, comprises basic logic part and auxiliary calculating section.Auxiliary calculating section to data progressively by following operation: data buffering preparation, noise reduction process, data are cut apart, unit conversion, data extract, result's transmission; Image decoder is responsible for the collection of digital video information, submits to the DSP digital signal processing module; Ethernet module or wireless transport module are finished the exchanges data with database server, submit object information to.
In the present embodiment, safe unit adopts the special-purpose secure microprocessor of the high-end safety intelligent card of ESAM, meet the ISO7816 communications protocol, its inside comprises encrypting and decrypting algoritic module and secure data storage module, Safety Design such as internal data self-destruction after having anti-tamper design, unique sequence number and may detect external attack.The utility model with the I of secure microprocessor the O mouth connect programmable logic device (being the basic logic unit of FPGA association processing unit), the internal register by programmable logic device is mapped to the external memory interface of DSP and operates.And the buffer status by configuration of programmable logic devices, control read-write sequence and change the state of secure microprocessor.Ciphering process adopts random number to produce random key, the one-time pad key, and concealed encrypted information, fail safe is high.
Intelligent video analysis is a very heavy task, though DSP has had very strong disposal ability, but still can't satisfy the analysis of multichannel real-time intelligent.Hardware characteristic of the present utility model is exactly the FPGA that has been equipped with powerful association's disposal ability, access data takies special EDMA passage and hardware interface simultaneously, strengthen communication capacity and time performance, processes such as heavy and the regional conversion that repeats, preliminary treatment are put into carry out among the FPGA, realize harden software.For DSP, equal the processing that consumes cpu resource is converted into dma operation, improve resource utilization ratio, reach real-time requirement, take into account flexibility simultaneously.
The video camera that is connected with the utility model is installed simply, need not special-purpose camera, can shine with normal monitoring angle (approximately with horizontal plane 30～90 degree), and can utilize existing watch-dog and monitoring video, is blended in original supervisory control system.
Claims (7)
1. embedded passenger flow analysing device based on DSP, be installed in the multichannel passenger flow analysis system, it is characterized in that comprising: CPU, image decoder and FPGA association processing unit, wherein: image decoder receives the video analog signal of camera collection, and the DSP digital signal processing module that exports CPU to carries out analyzing and processing; The data that CPU obtains above-mentioned analyzing and processing are delivered to FPGA association processing unit and are assisted calculating.
2. by the described embedded passenger flow analysing device of claim 1 based on DSP, it is characterized in that: described FPGA assists processing unit to have the data buffering module, its input links to each other with the DSP digital signal processing module by the multiple data channel, and the output of data buffering module returns and is connected to the DSP digital signal processing module by having noise reduction process module, data segmentation module, unit conversion module, data extraction module and result to return module in turn.
3. by the described embedded passenger flow analysing device based on DSP of claim 1, it is characterized in that: described DSP digital signal processing module carries out two-way the connection with safe unit.
4. by the described embedded passenger flow analysing device based on DSP of claim 1, it is characterized in that: described DSP digital signal processing module also links to each other with the wireless transmission unit that the data wireless after the analyzing and processing is transferred to database server.
5. by the described embedded passenger flow analysing device based on DSP of claim 1, it is characterized in that: described DSP digital signal processing module is connected to ethernet module.
6. by the described embedded passenger flow analysing device based on DSP of claim 1, it is characterized in that: described DSP digital signal processing module is connected to the input-output unit of be used to report to the police output or ginseng input number.
7. by the described embedded passenger flow analysing device based on DSP of claim 1, it is characterized in that: described DSP digital signal processing module is connected to the indicating circuit that is used for the display system operating state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920351718XU CN201590866U (en) | 2009-12-30 | 2009-12-30 | Embedded passenger flow analysis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920351718XU CN201590866U (en) | 2009-12-30 | 2009-12-30 | Embedded passenger flow analysis device |
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| CN201590866U true CN201590866U (en) | 2010-09-22 |
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| CN200920351718XU Expired - Fee Related CN201590866U (en) | 2009-12-30 | 2009-12-30 | Embedded passenger flow analysis device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104751189A (en) * | 2015-04-22 | 2015-07-01 | 安徽金赛弗信息技术有限公司 | Pre-assembled dual-video analysis based real-time counting device and method of boarding and alighting bus passengers |
| CN105096406A (en) * | 2014-04-30 | 2015-11-25 | 开利公司 | Video analysis system used for architectural energy consumption equipment and intelligent building management system |
| CN110113562A (en) * | 2019-03-19 | 2019-08-09 | 视联动力信息技术股份有限公司 | A kind of monitoring method and device based on view networking |
-
2009
- 2009-12-30 CN CN200920351718XU patent/CN201590866U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105096406A (en) * | 2014-04-30 | 2015-11-25 | 开利公司 | Video analysis system used for architectural energy consumption equipment and intelligent building management system |
| US10176381B2 (en) | 2014-04-30 | 2019-01-08 | Carrier Corporation | Video analysis system for energy-consuming building equipment and intelligent building management system |
| CN104751189A (en) * | 2015-04-22 | 2015-07-01 | 安徽金赛弗信息技术有限公司 | Pre-assembled dual-video analysis based real-time counting device and method of boarding and alighting bus passengers |
| CN110113562A (en) * | 2019-03-19 | 2019-08-09 | 视联动力信息技术股份有限公司 | A kind of monitoring method and device based on view networking |
| CN110113562B (en) * | 2019-03-19 | 2021-04-06 | 视联动力信息技术股份有限公司 | Monitoring method and device based on video network |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20121230 |