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Obstacle recognition method and system based on pressure sensor

A pressure sensor and obstacle recognition technology, applied in the field of unmanned driving, can solve problems such as driving hazards and failure to detect obstacles, and achieve the effect of improving safety

Active Publication Date: 2020-02-28
的卢技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, it can solve the recognition and decision-making within the range of appearance, such as detecting obstacles through sensors for avoidance, but cannot detect objects inside obstacles
But when there is a big rock or even a person inside a cardboard box, the sensor will detect a cardboard box after fusion. Although it will remind you that it is a box, the driver may choose to press it based on experience, which will cause driving hazards.

Method used

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  • Obstacle recognition method and system based on pressure sensor
  • Obstacle recognition method and system based on pressure sensor
  • Obstacle recognition method and system based on pressure sensor

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Embodiment 1

[0029] refer to figure 1 For this example, a schematic diagram of the overall process of an obstacle recognition method based on a pressure sensor is proposed. In this embodiment, the value of the pressure sensor is introduced into the vehicle control. The technology of the pressure sensor itself has not been improved, and it belongs to the multi-sensor Fusion algorithm part. At present, there are the following difficulties in the existing technology: one is to identify the material of the object type. At present, the algorithm for visually identifying objects already exists, but a large number of data sets are needed to ensure that the accuracy of object recognition can be continuously improved, but the object material has not yet been improved. good way. For example, the recognition of cartons can reach more than 99%, but whether the carton is thin or thick, whether it is structurally formed or compressed, these cannot be recognized through vision at present. The second is...

Embodiment 2

[0067] refer to figure 2 The schematic diagram shows that this embodiment proposes an obstacle recognition system based on a pressure sensor. The above method can be realized by relying on this system. The system includes a visual detection module 100, an ultrasonic detection module 200, a vehicle central control module 300, and a pressure detection module. 400 and the brake control module 500; specifically, the visual detection module 100 and the ultrasonic detection module 200 are arranged on the vehicle body to detect whether there is an obstacle in front of the vehicle; the pressure detection module 400 is arranged on the vehicle body to obtain collision pressure data The central control module 300 of the vehicle is connected with the visual detection module 100, the ultrasonic detection module 200, the pressure detection module 400 and the brake control module 500 for receiving the uploaded obstacle data and pressure data, and can send control to the brake control module ...

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Abstract

The invention discloses an obstacle recognition method and system based on a pressure sensor. The method comprises the following steps that whether an obstacle exists in front or not is determined byfusing vision and ultrasonic data; the object type of the obstacle is recognized; a corresponding pressure value P1 matched with the object type is set; after a vehicle makes contact with the obstacle, the pressure sensor feeds back a current pressure value P2; and when it is determined that the current pressure value P2 is larger than P1, emergency braking is carried out on the vehicle to stop the vehicle. The obstacle recognition method and system based on the pressure sensor has the beneficial effects that the data of the pressure sensor are taken into fusion, when the vehicle collides withthe obstacle while traveling at a low speed, the tire pressure changes of the vehicle are detected to make an algorithm decision, the vehicle is controlled to travel or brake in the end, the situation that a child who hides in a carton is crushed by a vehicle is avoided, and automatic driving can be safer.

Description

technical field [0001] The invention relates to the technical field of unmanned driving, in particular to a method for passing obstacles at a low speed based on a pressure sensor and a system for passing obstacles at a low speed based on a pressure sensor. Background technique [0002] In recent years, self-driving cars, also known as driverless cars, computer-driven cars, or wheeled mobile robots, are smart cars that realize driverless driving through computer systems. Vehicle self-driving technology includes video cameras, radar sensors, and laser range finders to understand surrounding traffic conditions and navigate the road ahead with a detailed map. This all works through Google's data centers, which process the vast amounts of information the cars gather about the terrain around them. In this regard, self-driving cars are the equivalent of remote-controlled cars or smart cars in Google's data centers. One of the Internet of Things technology applications of automoti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/09B60W30/095
CPCB60W30/09B60W30/0956B60W2420/54B60W2420/403
Inventor 张晋
Owner 的卢技术有限公司