Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vetronix CorpfiledCriticalVetronix Corp
Priority to TW086109371ApriorityCriticalpatent/TW325611B/en
Application grantedgrantedCritical
Publication of TW325611BpublicationCriticalpatent/TW325611B/en
Photometry And Measurement Of Optical Pulse Characteristics
(AREA)
Abstract
A hotel room detection system consists of: (1) Room detector, installed on proper position in living room or bath room inside hotel room, used to detect personnel condition by sensing infrared energy emitted from human body or microwave reflection signal, and sending out detected result by radio or infrared method; (2) One receiver, which uses radio or infrared method to receive signal sent by hotel room detector, in order to differentiate each room detector the room detector can set one independent password, when pressing the password on receiver outside the room, then the room detected result will be received by receiver, from indicator on the device showing if there is anyone inside room to facilitate room service operation.
TW086109371A1997-07-031997-07-03Hotel room detection system
TW325611B
(en)
Air detector having an ultrasonic transmitter, an ultrasonic receiver, a circuit means and means for determining whether received signal is indicative of air in the liquid