A compact, integrated acoustic localization and communications array includes an air-backed transmit element having a first end on which an end cap is disposed, and a second end configured to be mounted to a mounting surface. A volumetric acoustic array including a plurality of receiver elements that is electrically integrated to the transmit element. The localization and communications array is configured to transmit, via the transmit element, and receive, via the plurality of the receiver elements, an acoustic signal having a frequency in the range of 10 kHz to 50 kHz. Each of the plurality of receiver elements are spaced apart from the end cap at least a distance. The distance is greater than ¼ of a wavelength associated with the frequency transmitted and received by the localization and communications array, and is not equal to an odd multiple of ¼ of the wavelength.

A compact, integrated acoustic localization and communications array includes an air-backed transmit element having a first end on which an end cap is disposed, and a second end configured to be mounted to a mounting surface. A volumetric acoustic array including a plurality of receiver elements that is electrically integrated to the transmit element. The localization and communications array is configured to transmit, via the transmit element, and receive, via the plurality of the receiver elements, an acoustic signal having a frequency in the range of 10 kHz to 50 kHz. Each of the plurality of receiver elements are spaced apart from the end cap at least a distance. The distance is greater than ¼ of a wavelength associated with the frequency transmitted and received by the localization and communications array, and is not equal to an odd multiple of ¼ of the wavelength.

According to an example aspect of the present invention, there is provided an apparatus comprising memory configured to store a dive log, at least one processing core configured to receive the dive log from a dive computer, the dive log comprising information concerning a dive, the received dive log not including a location where the dive took place, obtain a geographic location of the apparatus, and add the location where the dive took place to the dive log based at least in part on the geographic location, and/or provide the dive log and the geographic location of the apparatus to a server.

According to an example aspect of the present invention, there is provided an apparatus comprising memory configured to store a dive log, at least one processing core configured to receive the dive log from a dive computer, the dive log comprising information concerning a dive, the received dive log not including a location where the dive took place, obtain a geographic location of the apparatus, and add the location where the dive took place to the dive log based at least in part on the geographic location, and/or provide the dive log and the geographic location of the apparatus to a server.

A smart clothing and backpack system enables a user to perform many actions. The smart clothing includes circuitry and/or is made of a conductive material enclosed in an insulation material. The smart clothing includes a set of sensors configured to detect body information. The smart clothing includes multiple electromagnets configured to adjust a size of the smart clothing. The electromagnets are configured to have an increased attraction to make the smart clothing tighter on the body of the user. The system includes a smart backpack to communicate with the smart clothing. The smart backpack includes a Radio Frequency IDentification (RFID) reader configured to detect RFID tags on or in items within the smart backpack. Many other features are able to be implemented with the smart clothing and backpack system. The smart clothing is able to include a wetsuit configured to communicate with a surfboard and/or a backpack.

A smart clothing and backpack system enables a user to perform many actions. The smart clothing includes circuitry and/or is made of a conductive material enclosed in an insulation material. The smart clothing includes a set of sensors configured to detect body information. The smart clothing includes multiple electromagnets configured to adjust a size of the smart clothing. The electromagnets are configured to have an increased attraction to make the smart clothing tighter on the body of the user. The system includes a smart backpack to communicate with the smart clothing. The smart backpack includes a Radio Frequency IDentification (RFID) reader configured to detect RFID tags on or in items within the smart backpack. Many other features are able to be implemented with the smart clothing and backpack system. The smart clothing is able to include a wetsuit configured to communicate with a surfboard and/or a backpack.

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 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 invention relates to a diving mask (10) comprising a telecommunication system (190) configured to allow the establishment of a one-way or two-way light communication and, more specifically, using a Li-Fi-type communication protocol. For this purpose, the telecommunication system (190) comprises a light communication module (150) comprising a light source (151) configured to emit light signals in a plurality of directions around the diving mask (10), and an electronic control card (156) in order to control the light source (151) and modulate the amplitude of the light signal according to an electronic signal encoded by said electronic control card (156). The invention also relates to an underwater communication method (200).

The invention relates to a diving mask (10) comprising a telecommunication system (190) configured to allow the establishment of a one-way or two-way light communication and, more specifically, using a Li-Fi-type communication protocol. For this purpose, the telecommunication system (190) comprises a light communication module (150) comprising a light source (151) configured to emit light signals in a plurality of directions around the diving mask (10), and an electronic control card (156) in order to control the light source (151) and modulate the amplitude of the light signal according to an electronic signal encoded by said electronic control card (156). The invention also relates to an underwater communication method (200).