A three-spectrum military vehicle CAN bus optical detector
A CAN bus, optical detector technology, applied in the field of optical detectors
Active Publication Date: 2014-06-04
上海电控研究所有限公司
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It is possible to prevent the logic analysis circuit of the dual-spectrum detector from com
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[0020] As shown in Figure 3, it is a schematic diagram of the 760nm infrared light sensing circuit of the present invention. Infrared photosensitive tube 2 receives from fire
[0021] As shown in Figure 4, it is a schematic diagram of the 960nm infrared light sensing circuit of the present invention. Infrared photosensitive tube 4 receives from fire
[0022] As shown in Figure 5, it is a schematic diagram of the 4400nm infrared light sensing circuit of the present invention. Infrared photosensitive tube 6 receives from
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The present invention provides a three-spectrum military vehicle CAN bus optical detector, comprising a power filter conversion circuit, a 760nm infrared light sensing circuit, a 960nm infrared light sensing circuit, a 4400nm infrared light sensing circuit, a signal conditioning circuit, a temperature compensation circuit, CPU interface circuit, CAN bus interface circuit, two-color indicator light circuit. Compared with the prior art, its advantages and effects are: the present invention adopts a three-spectrum circuit structure, which can effectively improve the ability to detect fires, has high fire detection accuracy, and has strong anti-false alarm capabilities; the temperature is measured by CPU sampling and calculation. Compensation keeps the detection sensitivity consistent in a wide temperature environment, and the degree of intelligence is significantly improved; when the vehicle is severely bumped or hit by a fire, causing a power supply or bus failure, it can still work normally.
Description
A three-spectrum military vehicle CAN bus optical detector technical field The present invention relates to a kind of optical detector, specifically a kind of CAN bus for three-spectrum military vehicle, can Optical detectors to detect and monitor hydrocarbon flames. Background technique The application environment of detector is varied, and there are various ultraviolet interference sources and infrared interference sources. For example In the national invention patent application number 200710083853.6, a dual-spectrum military vehicle CAN bus optical detector is proposed. In order to ensure the reliability of the fire detector, the threshold signal of the ultraviolet radiation and the threshold signal of the infrared radiation are determined by the CPU in the detector. value signals for analysis and comparison. Only when all parameters conform to the logic algorithm can the fire alarm be determined. However, exploring In the actual application of the detector,...
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Inventor 张华杰何璟孔文艳张敏龚一平谭诚
Owner 上海电控研究所有限公司
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