Monitor and control alarm device in infrared video, and method
A video surveillance and alarm device technology, applied in alarms, anti-theft alarms, televisions, etc., can solve the problems of high investment cost, high false alarm rate, and high installation requirements, and achieve the effect of saving investment, small size, and easy to carry
Inactive Publication Date: 2006-12-06
BEIJING UNIV OF POSTS & TELECOMM
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However, these methods cannot be directly applied to the video monitoring and alarming of train slide rails effectively.
The main reason is that it is not easy to rule out external interference, and the false alarm rate is high
In addition, the installation requirements of such equipment are relatively high
For example, installing a monitoring device near a train has strict regulations on the station environment, installation location and power supply status, which is difficult to meet
If a monitoring device is placed near each train, the investment cost is too high; if one device is installed to monitor multiple trains, multi-channel monitoring cannot be effectively performed
In addition, the monitoring method adopted by the above-mentioned device is the motion information extraction method, in addition to being able to fully eliminate various environmental disturbances (such as the movement of non-carriage objects in the monitoring area, such as animals, people, etc.), weather changes (rain, snow, In addition to interference such as fog), especially to meet the requirements of real-time processing, it has certain technical difficulties
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[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0039] see figure 1 , the infrared video monitoring alarm device of the present invention is by digital signal processor DSP chip and its peripheral devices: video signal A / D conversion unit, programmable logic component CPLD, frame memory RAM chip, FLASH chip, SRAM chip and alarm signal output interface and Composed of battery power, the hardware architecture of its control circuit is mainly divided into two parts: it is completed by two chips, CPLD and DSP, respectively, and the CPLD chip part includes sequentially connected infrared cameras, video signal A / D conversion units, programmable logic The components CPLD chip and frame memory RAM chip are mainly responsible for image pixel extraction, storage and generation of chip selection signals fo...
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The apparatus thereof comprises: a DSP chip and its peripherals; a video A / D converter; a complex programmable logic device (CPLD); a RAM chip for buffering frames; a flash chip; a SRAM chip; an alarming signals outputting interface; and a battery supply. Wherein, the infrared video camera, video A / D converter, CPLD chip and the RAM chip composes a digital video signal collecting and storing unit; the DSP chip, FLASH chip, SRAM chip and alarming signal output interface composes a video processing and alarming unit. The apparatus can be conveniently secured in the train to collect, monitor and process the video image about train parking in order to find the accident of a train sliding its rail and to send out alarm.
Description
technical field [0001] The present invention relates to an infrared video monitoring and alarming device and method, to be precise, relates to a video signal alarming device for detecting global motion based on digital video signal processing technology and a method for realizing motion detection and alarming, and the present invention is mainly used in railway systems , to solve the slide rail accident caused by the uneven terrain in the station when the train carriage stops at the station. The invention belongs to the technical field of embedded digital video signal processing. Background technique [0002] The train car slide rail of the railway system is a traditional problem that has existed for many years in the current railway safety monitoring system. Due to the natural physical slope formed on the earth's surface, after the train carriages are parked, the phenomenon of sliding rails often occurs, causing unnecessary losses of life and property. Due to the complex ...
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IPC IPC(8): H04N7/18H04N5/33G08B13/196
Inventor 王海婴范宇张弋叶曦
Owner BEIJING UNIV OF POSTS & TELECOMM