Hand washing alert

作者: Naomi C. Bogstad

DOI:

关键词:

摘要: A warning system is adapted to warn someone wash their hands prior leaving or entering a facility in which hand washing important. The includes door activated that can be either visible audible both and include locking remote signalling system. armed when the opened permit entry into de-activated upon acutation of hand-washing facilities. In one embodiment, used bathroom by flushing toilet.

参考文章(16)
Gerard O'Connell, Talking door sentinel ,(1974)
Gaylord D Jonassen, Low voltage surge protection network ,(1973)
Re Alfred, Alarm switch and door lock ,(1927)
Leesui Wu, Vernon Elton Hills, Proximity sensing circuit ,(1974)
Joseph W. Aossey, Pet door mat alarm ,(1983)