Pet locator system

作者： Scott A. Brune , Michael D. Westrick

DOI:

关键词: Computer hardware 、 Object (computer science) 、 Timer 、 Active mode 、 Electronic engineering 、 Transmitter 、 Track (disk drive) 、 Transceiver 、 Signal 、 Directional antenna 、 Engineering

摘要: A system for locating movable objects and detecting the failure of object to visit a designated area within predetermined time, including base unit (10), transceiver (12) attached (22), portable device (32) having directional antenna. The (10) includes transmitter circuit (14) which generates first signal (16) substantially continuous transmission zone (18), encompasses area. When (22) enters receiver portion (48) receives resets timer (58) (12). If fails revisit (18) based on predictions object's movements, times out switches (52) into an active mode wherein emits second (26). (26), may contain information identifying can be detected by using track down recover (22). In alternate embodiment, fixed mast-mounted locator (34) detects (26) provides regarding approximate location