How do those safety table saws that stop when they sense fingers work?

Question

How do those safety table saws that stop when they sense fingers work?

In: 6

Answer 1

These saws have a sensor called a “flesh-detection system” that can detect when something soft, like a finger, touches the blade. This sensor works by sending out an electrical signal that creates an invisible field around the saw blade.

If something touches the blade, it disrupts the electrical field and triggers an automatic braking system. This system stops the blade from spinning and lowers it beneath the table, preventing any further injury.