QuatroEyes® Prevents Accidents Caused by Heavy Machinery | Appendix | OBAYASHI CHRONICLE 130 English OBAYASHI CHRONICLE 130 Obayashi corporation logo OBAYASHI CORPORATION External link Language English Japanese 繁體中文 ภาษาไทย Indonesia Tiếng Việt Search Search Corporate History Corporate History: 2011 to 2021 A 130-Year Heritage Special Contents Six Stories Global Presence Technology Research Institute Archives Appendix Search Search Corporate History Corporate History: 2011 to 2021 A 130-Year Heritage Special Contents Six Stories Global Presence Technology Research Institute Archives Appendix Obayashi corporation logo OBAYASHI CORPORATION External link Language English Japanese 繁體中文 ภาษาไทย Indonesia Tiếng Việt CLOSE 4 Technology Technology Development QuatroEyes® Prevents Accidents Caused by Heavy Machinery Obayashi Has Developed QuatroEyes—A Safety Device That Detects Workers Nearby and Prevents Accidents Involving Heavy Machinery QuatroEyes Uses AI to Learn Every Possible Posture of Workers and Significantly Improves Detection Accuracy Obayashi Corporation has developed QuatroEyes, which is a safety device that shuts off heavy machinery to prevent injury when it detects workers nearby. QuatroEyes uses AI that learns every possible posture of construction workers ahead of time and uses multiple cameras placed on heavy machinery, such as backhoes and cranes, to accurately detect the presence of construction workers. Measures distance using two sets of stereo cameras that cover a wide range Workers coming in contact with heavy machinery is one of the main causes of fatal accidents at construction sites. As a safety measure, areas where heavy machinery is in operation are closed off if there is a risk of injury. However, there still is a risk if workers mistake the equipment as not being in operation and enter the area. It is also difficult to close off an area while heavy machinery is being moved to another location. There are devices that can detect objects in operators’ blind spots with an ultrasonic sensor. There also are safety devices that can detect signals from IC tags that workers carry. However, there has been a problem with these devices in that they sound alarms too frequently as they detect objects and workers outside of danger zones. To solve these problems, a new system with a camera has recently been developed to detect workers who are in danger zones only. However, there was still a problem with accuracy because the system could not detect workers who were bending down or carrying large materials. QuatroEyes can detect workers with significantly better accuracy because it uses AI to process images captured by its cameras. QuatroEyes learns every possible posture of workers at construction sites. This enables the system to detect workers who are bending down or carrying large materials, which was difficult to do in the past. The system has stereo cameras that can accurately measure distance so it can sound an alarm when a worker comes within a predefined proximity. In addition, it can shut off heavy machinery if there is a risk of a worker coming in contact with the heavy machinery. This reliably prevents accidents because the system will shut off equipment without requiring the operator or workers to make a judgment. QuatroEyes on heavy machinery The main features of QuatroEyes are as follows. Learns every possible posture of workers for significantly better detection accuracy Worker detection systems with conventional cameras could not detect workers if they were bending down or hidden behind a large object. QuatroEyes learns images of every possible posture of construction workers using image recognition with AI technology called deep learning. This has significantly improved detection accuracy. The system can detect workers who are bending down as well as workers who are carrying a large object. Conventional cameras can not detect those workers. In addition, using image processing technology such as brightness correction, the system works even in a dark area inside a tunnel with only about 20 lux of light or when there is a bright light behind an object. Detects a worker carrying material Shuts off heavy machinery and eliminates human error Conventional safety devices only sound an alarm to workers and the operator of heavy machinery. It was ultimately up to them to avoid heavy machinery or to stop it. Even if devices could accurately detect workers, there was potential for an accident due to human error. QuatroEyes uses stereo cameras to accurately measure the distance between heavy equipment and workers. It sounds an alarm when a worker approaches a warning zone. In addition, it can shut off heavy machinery if there is a risk of a worker coming in contact with the machinery, which improves safety by eliminating the possibility of human error. The distance for sounding an alarm and the distance for shutting off heavy machinery can be set for each piece of equipment as long as they are within 10 meters. QuatroEyes can be retrofitted to a variety of heavy machinery including backhoes, cranes, and forklifts. Previous Next Return to Technology Development CONTENTS CLOSE Management and Organization The Articles of Incorporation Current Articles of Incorporation (As of June 24, 2021) Enacted December 19, 1936 Basic Principles Obayashi Basic Principles Set forth in March 2018 Corporate Messages Created on January 25, 2011 Transitioning of Corporate Symbol Transitioning to a New Corporate Symbol Corporate Officers Founder, Past Chairmen, Presidents, Vice Chairmen and Executive Vice Presidents Current Officers (As of June 24, 2021) Organization Chart Current Organization Chart (As of April 1, 2021) Stock Information Total Number of Shares Issued and Outstanding Status of Shareholding Major Shareholders Changes in Stock Price Financial Statements Scope of Consolidation Consolidated Data Technology Technology Development Foreign Patent BIM Timeline BIM Timeline 外部リンク Awards Company Award for Excellent Projects President's Special Award Major Publication Corporate history, biography, etc. In-house magazines, operational guidelines, etc. PR magazines Group Companies Group Companies (in Japan) Major Group Companies (in Japan) OBAYASHI ROAD CORPORATION NAIGAI TECHNOS CORPORATION OBAYASHI FACILITIES CORPORATION OAK SETSUBI CORPORATION OBAYASHI-SHINSEIWA REAL ESTATE CORPORATION OAK INFORMATION SYSTEM CO. Other Group Companies (in Japan) Group Companies (Overseas) Major Group Companies (Overseas) THAI OBAYASHI CORPORATION LIMITED PT. JAYA OBAYASHI TAIWAN OBAYASHI CORPORATION OBAYASHI VIETNAM CORPORATION OBAYASHI SINGAPORE PRIVATE LTD. E.W. HOWELL CO., LLC OBAYASHI USA, LLC WEBCOR, LP KENAIDAN GROUP LTD. JAMES E. ROBERTS-OBAYASHI CORPORATION KRAEMER NORTH AMERICA, LLC JS BUILDERS, LLC Other Group Companies (Overseas) TOP Appendix Technology Development QuatroEyes® Prevents Accidents Caused by Heavy Machinery Obayashi Corporation: Celebrating the First 130 Years Corporate History Corporate History: 2011 to 2021 A 130-Year Heritage Timeline Special Contents Six Stories BIM ODICT Great East Japan Earthquake Kumamoto Earthquake LOOP50 Space Elevator Global Presence History of Obayashi Corporation’s International Operations Introduction of Overseas Offices North America Introduction of Overseas Offices Asia and Other Regions Technology Research Institute Archives Appendix OBAYASHI OBAYASHI CORPORATION External link OBAYASHI CHRONICLE 120 External link Privacy Policy External link Copyright © 2021 OBAYASHI CORPORATION. All Rights Reserved.