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Door-opening warning system of car

An alarm system and vehicle technology, applied in the field of vehicles, can solve problems such as low resolution, poor directionality and limitation of ultrasonic waves, and achieve the effects of high detection range accuracy, improved response speed, and improved intelligence

Inactive Publication Date: 2018-05-01
CONTINENTAL HOLDING CHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Ultrasound has poor directionality, large divergence angle, and low resolution. It is easy to use the car in the adjacent lane as the detection object, resulting in a wrong reminder
[0006] 2. The response speed of ultrasonic waves is not fast enough, and the propagation speed of ultrasonic waves is the speed of sound
If the target distance is measured for fast-moving objects such as battery cars and motorcycles, the lag is large, and the reminder may not be issued in time
[0007] 3. The attenuation of ultrasonic waves is relatively strong, so the test of long-distance objects will be relatively limited
For example, if you want to measure a fast-moving object, such as a battery car with a speed of 60km / h, you need to start detection at about 50m, while the detection distance of ordinary ultrasonic radar cannot reach this far, so timely detection and reminders cannot be performed
[0008] 4. Ultrasonic radar is difficult to detect the nature of the target object, and can only judge the distance of the object, so the detection accuracy and intelligence are not high

Method used

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Embodiment Construction

[0020] Embodiments of the present invention are described below with reference to the drawings. In the following description, numerous specific details are set forth in order to enable those skilled in the art to more fully understand and practice the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. Furthermore, it should be understood that the invention is not limited to the particular embodiments described. Rather, it is conceivable to implement the invention in any combination of the features and elements described below, regardless of whether they relate to different embodiments. Accordingly, the following aspects, features, embodiments and advantages are by way of illustration only and should not be considered elements or limitations of the claims unless explicitly stated in the claims.

[0021] The invention adopts the vehicle-mounted millimeter-wave radar to r...

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Abstract

The invention provides a door-opening warning system of a car. The method comprises a car-mounted millimeter-wave radar and a control module. The car-mounted millimeter-wave radar is configured to emit a millimeter-wave signal around the car and receive and process the millimeter-wave signal reflected by an object around the car such that the distance between a moving object around the car and thecar is detected and the speed at which the moving object approaches the car is also detected. The control module is configured to response to the detection that a car door is about to open, determinewhether the object is to reach the car door or not according to the distance between the moving object and the car and the speed at which the moving object approaches the car, and response to the detection that the moving object is about to reach the car door and output warning information.

Description

technical field [0001] The invention relates to the field of vehicles, in particular to a vehicle door opening alarm system. Background technique [0002] When the vehicle door is opened, sometimes there will be fast-moving objects such as motorcycles, battery cars, bicycles, etc., and a collision accident will occur because the rider does not see the door opening or has no time to react. Most of the existing solutions allow the people in the car to judge by themselves through the rearview mirror, or use ultrasonic radar to monitor the distance of the object and send out reminders to assist the people in the car to make judgments. [0003] For the scheme that allows the people in the car to judge by the rearview mirror, sometimes the people in the car forget to observe the rearview mirror when opening the door, resulting in a collision accident. [0004] However, the scheme of using ultrasonic radar to assist judgment has the following disadvantages: [0005] 1. Ultrasound...

Claims

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Application Information

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IPC IPC(8): B60Q9/00B60Q5/00
CPCB60Q5/006B60Q9/008
Inventor 谢芳铃赵冀江
Owner CONTINENTAL HOLDING CHINA CO LTD
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