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Detection and alarming method and system for electric vehicle proximity

An electric vehicle and algorithm technology, applied in the field of vehicle engineering and automotive electronics, can solve the problems of increasing vehicle cost, affecting the battery life of electric vehicles, increasing power consumption, etc., and achieve the effect of increasing road safety, reducing the probability of traffic accidents, and being easy to implement

Active Publication Date: 2018-04-06
XIAMEN YAXON NETWORKS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this kind of method requires the installation of radar probes or sensors, which increases the cost of the car. Second, the radar or sensors must be kept in working condition to increase power consumption and affect the battery life of electric vehicles.

Method used

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  • Detection and alarming method and system for electric vehicle proximity
  • Detection and alarming method and system for electric vehicle proximity
  • Detection and alarming method and system for electric vehicle proximity

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Embodiment Construction

[0031] To further illustrate the various embodiments, the present invention is provided with accompanying drawings. These drawings are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments, and can be combined with related descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should understand other possible implementations and advantages of the present invention. Components in the figures are not drawn to scale, and similar component symbols are generally used to denote similar components.

[0032] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0033] The principle of the present invention is: since the sound that can be recognized by the human ear is between 20Hz and 20kHz, and the motor noise of an electric vehicle is above 20KHz, the motor does not emit noi...

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Abstract

The invention relates to a detection and alarming method and system for electric vehicle proximity. The detection and alarming method based on a terminal having a microphone and a magnetic sensor comprises the following steps: carrying out a sampling step; to be specific, collecting a sound signal and a magnetic field signal around a terminal; carrying out a frequency domain conversion step; to bespecific, converging the sound signal and magnetic field signal into sound and magnetic field frequency-domain signals; carrying out a main frequency component extraction step; to be specific, extracting a main frequency component with the frequency of over 20KHz in the frequency-domain signals; carrying out a determination step; to be specific, determining whether any equal main frequency components exists; and carrying out an alarming or non-alarming step. In addition, the system is composed of a sampling module, a frequency domain conversion module, a main frequency component extraction module, a determination module, and an alarming or non-alarming module. According to the detection and alarming method and system, high-frequency switching noise and magnetic field change signals of a motor of an electric vehicle are sensed and analyzed by using a smart phone carried by a pedestrian, the two kinds of signals are matched and compared to identify whether any electric vehicle approaches and then whether alarming or non-alarming processing is carried out is determined.

Description

technical field [0001] The invention belongs to the field of vehicle engineering and automotive electronics, and in particular relates to a method and system for approaching detection and alarm of an electric vehicle. Background technique [0002] In recent years, electric vehicles have gradually become popular due to their good energy economy. In addition to being more economical in terms of energy consumption, another advantage of electric vehicles is lower noise, which is significantly lower than that of fuel engines. [0003] However, electric vehicles that are too quiet also face new traffic safety problems. According to the statistics of NHTSA (National Highway Traffic Safety Administration) in the United States, on streets where crowded vehicles need to travel at low speeds, the probability of accidents caused by electric or hybrid vehicles in pure electric mode is more than twice that of ordinary fuel vehicles. It is precisely because electric vehicles are too quie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/16
CPCG08G1/166
Inventor 涂岩恺汪文芳兰伟华陈远
Owner XIAMEN YAXON NETWORKS CO LTD
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