Embodiments herein relate to ear-worn devices that can be used to locate other devices such as mobile electronic devices. In a first aspect, an ear-worn device is included having a control circuit, a microphone in electrical communication with the control circuit, an electroacoustic transducer for generating sound in electrical communication with the control circuit, a motion sensor in electrical communication with the control circuit, and a power supply circuit in electrical communication with the control circuit, wherein the ear-worn device is configured to issue a location command to a mobile electronic device and wherein the location command triggers the mobile electronic device to emit a locating signal. Other embodiments are also included herein.

A travel case includes a case body defining an interior cavity in which to carry articles and an exterior shell; an inflatable floatation aid fixed to the exterior shell; an inflator in communication with the inflatable floatation aid, for inflation of the inflatable floatation aid; and a locator beacon fixed to the exterior shell, including a communications transmitter capable of signaling a remote party and a geo-locating apparatus.

A method using a tow body and sensor array for locating an underwater location beacon is provided. The steps of the method are moving the body and array in a direction of motion; orientating the array orthogonal to the direction of motion; beamforming acoustic conical beams from the array onto a seafloor; detecting a time series of acoustic data channels from the beacon; converting the data channels into spatial beams of acoustic frequency; determining if a signal of the underwater location beacon is present from each spatial beam; calculating likelihood functions for locations of the beacon to represent an area of the seafloor from which the signal of the underwater location beacon is to have originated; accumulating likelihood functions for the location of the underwater location beacon over the course of a search pattern; and producing a grid for a beacon location based on the likelihood functions.

A device (10) for detecting a signal of interest in order to locate an underwater source of the signal. The device includes a receiver (13) configured to detect the signal of interest, an actuator (14) configured to allow at least a portion of the detection device (10) to move towards a zone indicating a result of detection of the signal of interest in response to the receiver being operated, and an emitter (15) configured to indicate the result of detection of the signal of interest.

An exemplary aspect comprises a self contained acoustic beacon comprising: (a) an acoustic transducer; (b) an acoustic amplifier; and (c) a depth calculator. An exemplary aspect comprises a self contained acoustic beacon comprising: (a) an acoustic transducer; (b) an acoustic amplifier; (c) a water sensor; and (d) a battery life controller. An exemplary aspect comprises a self contained acoustic beacon comprising: (a) an acoustic transducer; (b) an acoustic amplifier; (c) a water sensor; and (d) a waterproof cover with at least one water-dissolvable portion, wherein the water-dissolvable portion dissolves within a pre-determined period of time, and wherein the beacon is powered on when water is detected by the water sensor.

A vehicle alarm device (200) having a novel structure is provided. The vehicle alarm device (200) includes a sound-source detection device (110), and the sound-source detection device (110) includes a plurality of microphones (116) and a delay circuit (117). As a transistor included in a signal retention circuit (22) inside the delay circuit (117), a transistor including an oxide semiconductor (OS transistor) is used. By the sound-source detection device (110), an extraneous sound is obtained and the sound-source position of the extraneous sound is identified. In the case where it is judged from the relative velocity or the like between the sound source whose position has been identified and the vehicle that the sound source and the vehicle are likely to collide, an acoustic signal for calling attention of the vehicle occupant is output.

An avionics unit assembly for an aircraft includes an avionics unit such as an underwater locator device (ULD) having a transmitter configured to output a radio frequency pulse and a battery configured to power the device. The avionics unit assembly can further include a housing that encases the transmitter and the battery and includes a vent port for exhausting an emission from the housing during a failure of the avionics unit. The avionics unit assembly can further include one or more of a suppressor that filters the emission, a shield element that is resistant to chemical and/or thermal effects of the emission, and a bracket for mounting the avionics unit assembly to a surface. The suppressor can include a plurality of channels, where each channel includes at least one blind alley that can capture/filter a particulate component and/or a liquid component from the emission and/or break up the particulate component.

An electronic device unit for detection of emergency calls initiated (emanating) from cell phone or other personal wireless communication handheld units, wherein the electronic device unit for detection of emergency calls is installed and integrated as a component detector of a fire alarm system, intrusion alarm system, surveillance system, access control system, SCADA system or other building and facility monitoring systems. A cell phone and other personal wireless devices that transmit special signals that are received by an electronic device unit for detection of emergency calls. A cell phone and other personal wireless devices that performs two way data communications with an electronic device unit for detection of emergency calls.

An unmanned underwater vehicle (UUV) is equipped with a GPS, heading sensor, depth and altitude sensors, and an acoustic navigation system. The UUV is deployed in the vicinity of the target location and releases an acoustic transponder (beacon). Using the acoustic navigation system with the GPS reference, the UUV conducts a survey to determine the horizontal location of the beacon on the seafloor and calculates a relative position between the beacon and the target. The UUV can plan a travel path allowing it to relocate the target, using the beacon as a navigation aid. The UUV can submerge to target depth and search for the target using a forward looking sensor. Once the target is acquired on the sensor, the UUV can home to the target.

An acoustic model determination approach for a real-time locating system is disclosed. The system includes one or more transmitting devices and one or more mobile devices. The acoustic model may be determined by deriving an acoustic representation of sub-structures within the building, and then forming the acoustic model based on the acoustic representation and the location and orientation of the static acoustic transmitting device. In another embodiment, an acoustic signal is transmitted from a static acoustic transmitting device, with the reflected signals received by the same static acoustic transmitting device in a receiving mode. Based on these received acoustic signals, the acoustic model is formed based on the reflected signals and the location and orientation of the static acoustic transmitting device.