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公开(公告)号：US09165440B1
公开(公告)日：2015-10-20
申请号：US14186711
申请日：2014-02-21
CPC分类号： G08B7/06
摘要： A panel-mountable audible and visual warning device comprising a main housing and a cap thereon, the device configured to have the main housing fit into a hole in the face of a mounting panel and to have the front wall and side wall of the cap external to the panel when the device is operably mounted therein, with the cap containing a piezoelectric transducer and at least one LED as a modular subassembly which is attached to the main housing. The cap and transducer together define an audio-frequency resonant cavity, and the cap has the LED(s) mounted therein in a position in front of the panel face in use and behind and radially outward of the transducer so as to emit light directly forward past the transducer.
摘要翻译： 一种面板安装的听觉和视觉警告装置，包括主壳体和盖上的盖子，该装置被配置成使主壳体配合到安装面板的表面中的孔中并且具有外壳的前壁和侧壁 当所述装置可操作地安装在所述面板中时，所述盖包含压电换能器和至少一个LED作为附接到所述主壳体的模块化子组件。 帽和换能器共同限定了音频谐振腔，并且帽将LED安装在使用中的面板前面的位置以及在换能器之后和径向向外的位置，以便直接向前发光 通过传感器。
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公开(公告)号：US09619983B1
公开(公告)日：2017-04-11
申请号：US14708887
申请日：2015-05-11
摘要： A wireless tandem alarm having a first alarm configured for physical connection to an industrial machine having an electronic machine controller, and a second alarm configured for detachable connection to the first alarm or to the industrial machine. Each alarm has a housing, a piezoelectric transducer within the housing, a processor configured to drive the piezoelectric transducer in response to a control signal, and a wireless transceiver configured for relatively short-range, low-power communications. In the first alarm, the processor drives the piezoelectric transducer in response to a signal from the machine controller and, also responsive to the machine controller signal, transmits a control signal via the wireless transceiver. In the second alarm, the wireless transceiver receives the control signal from the first alarm and supplies it to the processor, which is configured drive the piezoelectric transducer in response. The alarms are configured to work in tandem, when attached to each other, to cooperatively produce a combination of sound characteristics not achievable with either alarm alone. The alarms are also configured to detect when they are detached from each other and to respond by changing one or more sound characteristics. When detached, the alarms are also capable of affecting the operation of each other via two-way wireless communications.
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