A method of monitoring a level of a liquid in a tank of a moveable vehicle includes sensing an orientation of the moveable vehicle relative to a horizontal plane with a vehicle orientation sensor, determining if the orientation of the moveable vehicle is less than an allowable orientation threshold or if the orientation of the moveable vehicle is equal to or greater than the allowable orientation threshold, measuring a level of the liquid in the tank of the moveable vehicle with a liquid level sensor when the orientation of the moveable vehicle is less than the allowable orientation threshold, defining a sensed fluid level value with the controller, and saving the sensed fluid level value in a memory of the controller. The sensed fluid level value is based on the measured level of the liquid when the orientation of the moveable vehicle is less than the allowable orientation threshold.

A method of monitoring a level of a liquid in a tank of a moveable vehicle includes sensing an orientation of the moveable vehicle relative to a horizontal plane with a vehicle orientation sensor, determining if the orientation of the moveable vehicle is less than an allowable orientation threshold or if the orientation of the moveable vehicle is equal to or greater than the allowable orientation threshold, measuring a level of the liquid in the tank of the moveable vehicle with a liquid level sensor when the orientation of the moveable vehicle is less than the allowable orientation threshold, defining a sensed fluid level value with the controller, and saving the sensed fluid level value in a memory of the controller. The sensed fluid level value is based on the measured level of the liquid when the orientation of the moveable vehicle is less than the allowable orientation threshold.

A method of monitoring a level of a liquid in a tank of a moveable vehicle includes sensing an orientation of the moveable vehicle relative to a horizontal plane with a vehicle orientation sensor, determining if the orientation of the moveable vehicle is less than an allowable orientation threshold or if the orientation of the moveable vehicle is equal to or greater than the allowable orientation threshold, measuring a level of the liquid in the tank of the moveable vehicle with a liquid level sensor when the orientation of the moveable vehicle is less than the allowable orientation threshold, defining a sensed fluid level value with the controller, and saving the sensed fluid level value in a memory of the controller. The sensed fluid level value is based on the measured level of the liquid when the orientation of the moveable vehicle is less than the allowable orientation threshold.

A method of monitoring a level of a liquid in a tank of a moveable vehicle includes sensing an orientation of the moveable vehicle relative to a horizontal plane with a vehicle orientation sensor, determining if the orientation of the moveable vehicle is less than an allowable orientation threshold or if the orientation of the moveable vehicle is equal to or greater than the allowable orientation threshold, measuring a level of the liquid in the tank of the moveable vehicle with a liquid level sensor when the orientation of the moveable vehicle is less than the allowable orientation threshold, defining a sensed fluid level value with the controller, and saving the sensed fluid level value in a memory of the controller. The sensed fluid level value is based on the measured level of the liquid when the orientation of the moveable vehicle is less than the allowable orientation threshold.

A gyroscope, an electronic device and a method of detecting an angular velocity. The gyroscope includes: a photoelectric detector and a light source, wherein the light source is movable relative to the photoelectric detector, and light emitted by the light source is able to be irradiated onto the photoelectric detector.

Provided according to various embodiments can be a stand comprising: a stand housing; a wireless power transmission member disposed in the internal space of the stand housing; and at least one magnet disposed near the wireless power transmission member, wherein the stand is coupled to the outer surface of an electronic device in such a manner that at least one attachment member disposed in a corresponding position in the internal space of the electronic device is attached thereto by the magnetic force of the magnet, and supplies wireless power to the electronic device via the wireless power transmission member. Other various embodiments are possible.

Provided according to various embodiments can be a stand comprising: a stand housing; a wireless power transmission member disposed in the internal space of the stand housing; and at least one magnet disposed near the wireless power transmission member, wherein the stand is coupled to the outer surface of an electronic device in such a manner that at least one attachment member disposed in a corresponding position in the internal space of the electronic device is attached thereto by the magnetic force of the magnet, and supplies wireless power to the electronic device via the wireless power transmission member. Other various embodiments are possible.

An information processing device includes a combining processing unit configured to combine a plurality of pieces of direction information detected by direction detection units in a plurality of apparatuses to generate combined direction information.

An information processing device includes a combining processing unit configured to combine a plurality of pieces of direction information detected by direction detection units in a plurality of apparatuses to generate combined direction information.

A method of device tracking is provided. Based on a captured image containing a marker, first spatial position is acquired. Based on a captured image of a scene, second spatial position is acquired. Based on at least one of the first spatial position and the second spatial position, a terminal device may be positioned and tracked.