| 摘要 |
<p>A sensitive edge (10) for door systems, lifts, doors, or other moving portions of transit vehicles that come into contact with articles or passengers includes a contactless switch having a body (28) defining a resilient deformable leading edge portion (30), a base portion (32), an external coupling portion (36) and an internal hollow chamber (34) preferably filled with air at atmospheric pressure. Mounted within the chamber and spaced from one another is a flexible magnet or similar magnetic field creating device (40) and a Wiegand wire and pick-up coil module (38). Alternatively, the chamber may contain plural segmented flexible magnets and modules. Lead wires (42) connect the module to a switch for recycling the door upon the engagement of the sensitive edge with an object. The sensitive door edge switch does not employ the use of electrical contacts or mechanical elements thereby prolonging switch life and reducing maintenance requirements of transit vehicles. </p> |
