The hot summer sun is the most frustrating thing for the majority of car owners in the summer. When the outside temperature reaches 35 ℃, the sunlight irradiation vehicle for 15 minutes, the temperature in the closed compartment can rise to 65 ℃, if a long time to stop, the highest temperature can even be close to 90 ℃.
Every year from various channels of the news media to see the tragedy of careless guardians will be left children in the car. In such a high temperature environment, the human body temperature will rise rapidly. If the body temperature exceeds 42 ℃, the function of the central nervous system will be seriously disrupted, the body protein may be denatured, coagulation, leading to irreversible organ damage or even death. Children's body metabolism is even worse, body temperature over 41.6 ℃ will probability lead to death, brewing a family tragedy.
All along, governments and vehicle manufacturers have been very concerned about the safety of children travelling in the back seat. Over the past three years, members of the U.S. House of Representatives and Senate have repeatedly discussed the introduction of the "Help Overcome the Trauma of Children Being Left in the Back Seat" bill, which requires all new U.S. models in the future to be equipped with sensors and alarm systems to remind drivers to check the back seat. And vehicle manufacturers are ahead of the law this time, with GM, Hyundai, Kia, Nissan, Toyota, and several other car brands already having programmes in place to remind drivers to check the back seat. The auto industry is also committed to introducing backseat reminders in all cars and trucks by 2025, including a combination of audible and visual alerts. Hyundai will standardise the rear reminder system Rear Occupant Alert (ROA) on all models from 2022, which essentially integrates motion detection and rear door logic systems based on ultrasonic sensor technology. Ultrasonic sensors in the rear cockpit detect the interior environment 24 hours a day after the engine has been switched off. If the sensors detect a moving object inside the vehicle, the vehicle will alert the police and send a message to the owner via Blue Link.
Monitoring with ultrasonic sensors is a proven solution for ROA systems. The product is installed at the roof of the vehicle and detects moving objects by transmitting and receiving ultrasonic waves, sending an alarm message to notify the vehicle owner when a moving object is detected in the back seat of the vehicle; slight movements caused by breathing when a person or a pet is asleep can also be monitored by the Doppler effect of ultrasonic waves.
Ltd. has more than 20 years of experience in the development and production of ultrasonic sensors, which are widely used in automotive assisted parking systems, blind zone monitoring systems, etc. As a mainstream supplier in the industry, Audiowell has a wide range of ultrasonic sensors. As a mainstream supplier in the industry, Audiowell is committed to providing professional and reliable products to protect the safety of automobile driving.
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