A wearable electronic device for detecting diver respiration comprises a transducer element and a processing element. The transducer element is configured to receive sonar waves and communicate a corresponding receiver electronic signal. The processing element is configured or programmed to receive the receiver electronic signal, identify that a breath of the diver has occurred from the receive electronic signal, determine a respiration rate of the diver based on a plurality of breaths, and present an indication of the respiration rate to the diver.

An apparatus is disclosed having a sensor configured to measure a biological parameter of a diver and transmit a sensor signal. A controller is configured to determine that the biological parameter value correlated to the sensor signal is anomalous and responsively issue a rescue deployment signal to a buoyancy valve assembly. The buoyancy valve assembly has an inlet port connectable to a source of pressurized gas and an outlet port connectable to a buoyancy control bladder. The buoyancy valve assembly configured to receive the rescue deployment signal and responsively supply pressurized gas from the inlet port to the outlet port and buoyancy bladder, whereby the diver may ascend the water surface, even if disabled.

An underwater positioning system for scuba divers includes a base station having an underwater transmitter and receiver for sending and receiving underwater signals. The system also includes at least one diver unit having a scuba-style mask with a plurality of receivers for detecting the transmitted base signal. A diver display is positioned within the inside facing portion of the mask for indicating the direction of the base station. The diver unit also includes a transmitter for sending an emergency SOS signal to the base station and other diver units.

A heads-up display comprises a housing, a pressure sealed optical element disposed at a front end of the housing, and a dive computer disposed within the housing. The dive computer includes a display panel. There is a lens disposed in the housing between the infrared cut-off filter and the display panel.

The embodiments disclose a lighting device configured for projecting at least a 180 degree halo of light using at least one component module having a LED/lens light pod module, a mount configured for a user to wear the lighting device on a user's hand, at least one external battery pack and a navigation light device with the lighting device, wherein the lighting device and the navigation light device are configured to project a 360 degree light pattern and at least one sensor configured to automatically activate a front LED/lens light pod module when the user raises and points a hand to gain a predetermined distance forward focused beam in a pointing direction, wherein the at least one sensor activates left and right side LED/lens light pod modules for projecting a light pattern to a front and rear direction when the user's arm is at one's side.

Disclosed are a system and method for undersea navigation with a maritime vehicle or diver undersea navigation device. A sensor interface receives navigation information from a plurality of sensors used to sense navigation information. A processor receives the navigation information from the sensor interface. The processor converts the navigation information into graphics data. The processor provides the graphics data to a graphics processing unit to render a navigation board image on a display of the maritime vehicle or diver undersea navigation device. The navigation board image comprises a plurality of navigation indicators to indicate the navigation information and a compass comprising a plurality of rotational orientation indicators to indicate rotational orientation information. The rotational orientation indicators include a plurality of heading direction indicators, a current heading indicator, and a plurality of pitch indicators, where the plurality of pitch indicators indicate pitch information.

The present invention refers to a device for detecting the pressure of compressed gas cylinders in breathing apparatuses for scuba diving which can be powered by means of a battery, provided with a pressure sensor. The device allows the housing of sensors with sufficiently large dimensions, guaranteeing precise gas cylinder pressure readings. Furthermore, the elements that guarantee the watertight seal of the device can be replaced in a practical effective manner.

The present disclosure generally relates to displaying information related to a physical activity. In some embodiments, methods and user interfaces for managing the display of information related to a physical activity are described.

The present invention relates to instrumentation for underwater use powered by means of a battery and provided with a pressure sensor capable of periodically detecting pressure values inside the main body of the instrumentation. The present invention also relates to a method for detecting possible pressure drops inside the main body of the instrumentation over time. The instrumentation of the present invention enables carrying out efficient and inexpensive self-diagnosis of the pressure inside the body of the device, every time the battery is changed or also during manufacture of the instrument.

A diving system can include a smart buoyancy assistant to automatically adjusts the amount of air in the buoyancy control device (BCD) to maintain buoyancy control during the descent, level hold, or ascent of a dive. In some instances, the smart buoyancy assistant is automatically activated when the system is submerged to a predetermined activation depth. Additionally, the smart buoyancy assistant can add air to the BCD if the system drops below a predetermined maximum depth. The system can capture data representing dive metrics and sensor data and can report such data to a computing device to further aggregate the data and generate dive models to improve the performance of the system. The computing device can use the aggregated data to perform dive analysis and determine if the system is over or under adjusting the amount of air to improve the dive models.