interlock switch การใช้

• An open door was first indicated by a semaphore arm, but these were easily damaged, and by 1923 interlock switches proving the doors were closed were introduced.
• For drive-by-wire automobiles, a brake-accelerator interlock switch, or " smart throttle " would eliminate or at least curtail any instance of unintended acceleration not a result of pedal misapplication by causing the brake to override the throttle.
• Using appropriate safe input hardware ( e . g . light curtains, e-stop buttons, and door interlock switches ), AS-Interface can provide safety support up to SIL ( Safety Integrity Level ) 3 according to EN 62061, CAT 4 according to EN954-1 as well as Performance Level e ( PL e ) according to EN ISO 13849-1.