under 14 years old
TWJS028
Nowadays people often shop in a big supermarket by using a shopping cart to help them allocate selected items. When people shop, they tend to stare at the items on the shelf and neglect the danger of the shopping cart. As a result, people may hit someone or may be collided by the shopping cart, causing pain or injury.
The invented Collision-proof Cart is equipped with a sensor. When the sensor senses some obstruction ahead, the brake device can be activated automatically to stop the cart from moving forward. This helps to reduce some unnecessary injury and to make the shopping area much safer.
HUEI-SHIANG WANG
PO-CHEN YEN
YU-SHAN YEN