A food blender is a common household appliance in many homes.
Most blenders on the market have built-in safety interlocks. The
appliance cannot be turned on if the cup is not firmly locked in
place. The appliance can however be powered on when the cup is
not covered. This means blending can be carried out without the
cover in place and is hence a potential safety hazard for the
user. Apart from serious cuts, spillage can also occur when the
cover is not used.
For my final project, I plan to design and make a device that
can be added onto any food blender that can serve as a safety
interlock to ensure that the cover must be in place before the
appliance can be powered on. My preliminary idea consists of 3
parts: A magnet, Reed switch with RF transmitter and a RF
Receiver with Relay