emergency avoidance system
A technology for emergency avoidance and crowd flow, which is applied in radio wave measurement system, radio wave reflection/re-radiation, sound wave re-radiation, etc. It can solve the problems of chaotic escape scenes, lack of intelligent features, and expansion of disaster consequences. To achieve the effect of simple structure
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[0021] The present invention will be further described below in conjunction with the drawings and specific embodiments:
[0022] See figure 1 and figure 2 The emergency avoidance system of the present invention includes a sensor 1, an escape guide device 2, a smoke detector 3, and a control device 4. The sensor 1 is used to detect the flow of people on the escape route, and transmit the corresponding signal of the flow of people to the In the control device 4, the sensor 1 may be a human flow velocity sensor, a human flow density sensor or a human flow sensor. In this embodiment, the sensor 1 is an ultrasonic sensor for measuring the speed of the flow of people, and the ultrasonic sensor is arranged on an escape passage of a building or an underground passage.
[0023] The ultrasonic sensor includes an ultrasonic generator 11, an ultrasonic receiving probe 12, a shaping amplifier circuit 13, a band-pass filter circuit 14, a mixer circuit 15, a low-pass filter 16, an A / D conversion...
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