Electronic Pedestrian Protection system

What is electronic pedestrian protection system?

Electronic Pedestrian Protection is a passive safety system. Engineers designed it to lower the intensity of injuries that occur to a pedestrian after striking a running vehicle.

Pedestrians are particularly at risk in traffic. In most accidents, the pedestrian collides with the front of the vehicle. Legal requirements and consumer protection tests for pedestrian protection have become significantly severer in recent years. This presents significant challenges for sensor equipment, which must reliably detect an impact between the vehicle and a pedestrian. 

The pedestrian safety and protection norms are aimed to do so. It will ensure that the new cars meet a minimum requirement of safety for the pedestrians. It’s one of the phases of the Bharat New Safety Vehicle Assessment Program (BNVSAP).

How does an electronic pedestrian protection system work?

The pedestrian protection system has acceleration sensors, a control unit, and an actuator mechanism. The location of the acceleration sensors is in the front area of the vehicle inside the bumper.

When a pedestrian strikes against the front bumper, the acceleration sensor detects that motion. It then sends the corresponding signal to the control unit. The control unit then orders the motor and the actuators to lift that end located below the upper end i.e., hinge of the bonnet. 

The lifting of the bonnet’s upper end protects the pedestrian is against the heat generated in the engine compartment. It also allows the bonnet to act as a cushion between the hard engine components and the pedestrian’s body. Manufacturers also make the car’s structure suitable to absorb the energy of an impact to the maximum extent. Thereby, it avoids injuries to the person.

Attention Assist

Most of the major accidents have happened involving the pedestrians only because the driver fell asleep. This system will detect the motion of the eyes and sense whether the driver is awake or not. If not, it will alert the driver. It also advises the driver to take breaks regularly so that he is attentive enough while driving.

Autonomous emergency braking(AEB)

Major accidents occur due to late-breaking or insufficient braking force in this system. According to Euro NCAP: Autonomous is the system that acts independently of the driver to avoid or mitigate the accident the Emergency system will act in a critical situation and the Braking system will try to avoid the accident by applying brakes.

Electronic stability control or electronic stability program

This system will improve the stability of the vehicle by detecting and reducing the loss of traction. The ESP will apply the brakes to the wheel which is skidding or losing traction thus preventing oversteer.

The Indian cars were lacking basic safety features such as front airbags and ABS. But with the implementation of the first phase of BNVSAP, the cars needed to have 2 front airbags and ABS as standard. For pedestrian safety, all the manufacturers will have to add pedestrian safety software from October 2020. Peripheral sensors will assist the software which will sense any impact and actuate the airbag control unit. It will also raise the hood of the car to provide a safe layer. This will reduce the impact on the pedestrian involved.

Moreover, new vehicles will get safety features like Electronic Stability Control (ESC) and Autonomous Emergency Braking (AEB) by 2022. Consumer preferences have been shifting more towards safety instead of brand and cost.

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