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Pedestrian danger early-warning method

A dangerous situation and pedestrian technology, applied in alarms, anti-collision systems, instruments, etc., can solve problems such as being caught off guard, and achieve the effect of ensuring travel safety and road safety

Inactive Publication Date: 2012-08-01
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in most road conditions, only relying on people's own sensory functions to judge the motorcycle and its position, speed, driving direction, etc., is often unprepared and unprepared.

Method used

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Embodiment Construction

[0019] exist figure 1 Shown embodiment work step flowchart and figure 2 The system block diagram shown: the signal detector SM in the weak signal detection step uses a high-sensitivity microphone to collect sound signals in a wide range, amplifies through the preamplifier circuit and screens the intensity (amplitude), and obtains the sound signal shaking in the range of 10-60Hz The band-pass filter BF of the audio frequency band-pass filter step utilizes active and passive band-pass filter circuits to obtain a 100-1000Hz audio signal with jitter characteristics; the A / D converter AD of the A / D conversion step will have jitter Perform analog-to-digital conversion processing on the characteristic sound signal to obtain the jitter sound signal sequence data; the synchronous matching calculation step uses the data processor DP to combine the jitter sound sample model data of the motorcycle within the range of 10 to 60 Hz in the built-in memory M, and collect and filter The obtai...

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Abstract

A pedestrian danger early-warning method mainly includes the six steps of weak signal detection by acquiring and screening shaking sound signals with a signal detector; sound frequency band-pass filtering by selecting shaking feature given frequency band sound signals with a band-pass filter; A / D (analog / digital) conversion by performing analog-to-digital conversion of the shaking feature given frequency band sound signals into shaking sound sequence data by an A / D converter; synchronous matching computation by processing motorcycle sample data with the shaking sound sequence data with a data processor so as to obtain identified result data for temporary storage; directional speed judgment by judging sound source conditions by the data processor according to the temporarily stored result data; synchronous comparison computation by comparing synchronous quick movement shaking data obtained in the last step with motorcycle tone data by the data processor to obtain synchronous difference value data, and outputting control pulse if the data are smaller than a given value; and warning driving by outputting warning signals of given forms by a driving amplifier when the control pulse is obtained, and driving an actuator to realize warning.

Description

technical field [0001] The invention relates to an early warning method for pedestrian danger, in particular to a warning method for reminding pedestrians to pay attention to approaching motorcycles. Background technique [0002] Pedestrians on the road, as a vulnerable group, are often collided and harassed by speeding motorcycles, resulting in casualties. Just as the public service advertisements in many cities stated: "Seventy percent of traffic accidents are related to motorcycles." Although some cities have adopted various management measures such as "banning motorcycles" and "restricting motorcycles", due to the large stock base, the inertia of huge riding groups, the difficulty of active law enforcement, and the electronic police not intervening in motorcycles, etc. The reason is that motorcycle rampage, reverse driving, ignoring red lights and other phenomena are still common, and motorcycle accidents and injuries, and speeding snatches still occur frequently. This...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/16G08B21/02
Inventor 屈百达
Owner STATE GRID CORP OF CHINA
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