Sensing system used for recognizing child seats on rear row of automobile

Abstract

The invention discloses a sensing system used for recognizing child seats on the rear row of an automobile. The sensing system comprises a rear-row ISOFIX interface, a vehicle-mounted power source, an electromagnetic relay, an analog-to-digital converter and a safety air bag controller. The rear-row ISOFIX interface is provided with a first conductive part and a second conductive part. One end of the first conductive part is a suspended free end, and the other end of the first conductive part is electrically connected with the positive electrode of the vehicle-mounted power source. The negative electrode of the vehicle-mounted power source is electrically connected with one end of a coil of the electromagnetic relay, and the other end of the coil of the electromagnetic relay is electrically connected with one end of the second conductive part. The other end of the second conductive part is a suspended free end. The suspended free end of the first conducive part and the suspended free end of the second conductive part can be electrically connected through an ISOFIX interface. One end of a switch of the electromagnetic relay is connected with the vehicle-mounted power source. The other end of the switch of the electromagnetic relay is connected with the input end of the analog-to-digital converter. The output end of the analog-to-digital converter is connected with the safety air bag controller. The sensing system can meet the requirement for the function that whether child seats exist on the rear row of the automobile or not can be judged. Impact injuries caused by detonation of a safety air bag to child passengers on the child seats are prevented.

Description

technical field [0001] The invention belongs to the field of automobile electrical appliances, and in particular relates to a perception system for identifying the presence of a child seat in the rear row of an automobile. Background technique [0002] The airbags in the front row of the car are a must-have component of the car, and they are used to effectively protect the body and head of the front row driver and passenger in the event of a collision. If a child seat is installed on the car, the safety airbag at the corresponding position needs to be turned off, so as to prevent the safety airbag from detonating and causing injury to the child on the child seat when a collision occurs. The co-pilot of the front seat of the car is generally equipped with an occupant identification device (such as a weight sensor, a seat belt tension sensor, etc.), if a child seat is installed on the co-pilot seat, the occupant identification device will identify the child seat and send a sig...

AI Technical Summary

Problems solved by technology

Since the rear row of the car currently has four-six-point seats and an integral seat frame structure, which is different from the front seat frame structure, it is impossible to install occupant identification devices such as weight sensors and seat belt tension sensors, and it is impossible to identify whether there are children in the rear row. The existence of the seat, if a child seat is installed on the rear seat, in the event of a collision, the detonation of the rear front airbag will cause serious impact injuries to the child occupant on the child seat

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