发明名称 Gas alarm system with wind direction indicator
摘要 A hazardous gases and wind direction sensor includes a housing having a hazardous gas sensor. The gas sensor sends an output signal to a transmitter at a predetermined frequency upon detecting a hazardous gas. Wind detection is provided by eight LEDs aligned with eight corresponding photocells disposed in the housing, where each photocell represents a topographical direction and is adapted to provide an output signal associated with a particular wind direction at a predetermined frequency. A disk is coupled to a rotatable shaft in the housing and positioned between the LEDs and photocells. The shaft is coupled to a wind direction indicator such as a windsock. The disk has a slot sized to allow light to pass from one of the LEDs to its corresponding photocell, which sends an output signal to enable a switching circuit in the transmitter. The switching circuit enables the output signal at a predetermined frequency to be transmitted to a receiver.
申请公布号 US7310047(B2) 申请公布日期 2007.12.18
申请号 US20050304967 申请日期 2005.12.14
申请人 SAUDI ARABIAN OIL COMPANY 发明人 AL-WEHEBI FAHAD
分类号 G08B17/10 主分类号 G08B17/10
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