A contact sensor includes a permanent magnet, first and second magnetic field sensors, and a computing device in communication with the first and second magnetic field sensors and configured to execute an “Open/Close” function to generate an “Open/Close” decision, and a “Masking” function to generate a “Masking” decision, based on at least one of a first measurement from the first magnetic field sensor or a second measurement from and the second magnetic field sensor.

A system and method of automatically alerting a user to remain awake is able to automatically notify a user of a head tilt or other malposition of their head indicative of falling asleep, thereby preventing the user from falling asleep while driving or performing any other task requiring an alert operator. The method is provided with a headset, at least one inclination sensor, and an alerting system, wherein the inclination sensor receives a plurality of head inclination readings. The method is further provided with an allowable range of head inclination managed by the controller, thereby allowing a head tilt to be detected based on at least one abnormal reading from the plurality of head inclination readings. The controller generates a sleep warning in response to the abnormal reading, whereby the sleep warning is subsequently output by the alerting system, whereby the sleep warning is rendered as an alarm or notification.

A system and method of automatically alerting a user to remain awake is able to automatically notify a user of a head tilt or other malposition of their head indicative of falling asleep, thereby preventing the user from falling asleep while driving or performing any other task requiring an alert operator. The method is provided with a headset, at least one inclination sensor, and an alerting system, wherein the inclination sensor receives a plurality of head inclination readings. The method is further provided with an allowable range of head inclination managed by the controller, thereby allowing a head tilt to be detected based on at least one abnormal reading from the plurality of head inclination readings. The controller generates a sleep warning in response to the abnormal reading, whereby the sleep warning is subsequently output by the alerting system, whereby the sleep warning is rendered as an alarm or notification.

A system and method for comprehensive remote monitoring of a user's vital signs and bodily functions includes a wearable monitor in bi-directional communication with a gateway element that communicates with one or more external devices to allow remote access to user vital sign and bodily function information.

A receiver comprises: optical signal distributing means for distributing an optical signal transmitted to detect a detection target on a traveling path to two or more paths; a detection unit configured to detect a received light intensity of the optical signal at a first position where the received light intensity increases when the optical axis is shifted and at a second position where the received light intensity decreases; an intensity ratio calculation unit configured to calculate a ratio between the received light intensity at the first position and the second position based on the output of the detection unit; and a determination unit configured to determine whether or not there is an optical axis shift based on a change in the ratio of the received light intensity calculated by the intensity ratio calculation unit.

A system for monitoring gaining activities associated with a gaming surface, the system including a gaming equipment having the gaining surface and a display system connected to the gaming equipment, such as an improved limit sign. The system also includes device camera connected on the display system having a first field of view tracking, for example, betting markers, gaining tokens, a gaming participant and, the gaming surface. The system can interoperate with other camera systems to establish a common coordinate space for coordinated image processing and machine learning based on model representations of a spatial space using the common coordinate space. The calibration can occur dynamically to automatically adjust for camera reconfigurations.

Devices, methods, and systems for testing a heat detector of a self-testing hazard sensing device are described herein. One device includes a heat detector, and a controller configured to provide energy to the heat detector to heat the heat detector to a threshold temperature, determine an amount of time it takes for the heat detector to heat to the threshold temperature, determine whether the amount of time it takes for the heat detector to heat to the threshold temperature meets or exceeds a threshold amount of time, and determine whether the heat detector is functioning properly based on whether the amount of time it takes for the heat detector to heat to the threshold temperature meets or exceeds the threshold amount of time.

A system providing various improved calibration techniques for haptic feedback is described. An acoustic field is defined by one or more control points in a space within which the acoustic field may exist. Each control point is assigned an amplitude value equating to a desired amplitude of the acoustic field at the control point. Because complete control of space is not possible, controlling the acoustic field at given points yields erroneous local maxima in the acoustic field levels at other related positions. In relation to mid-air haptic feedback, these can interfere in interactions with the space by creating secondary effects and ghost phenomena that can be felt outside the interaction area. The level and nature of the secondary maxima in the acoustic field is determined by how the space is controlled. By arranging the transducer elements in different ways, unwanted effects on the acoustic field can be limited and controlled.

A system providing various improved calibration techniques for haptic feedback is described. An acoustic field is defined by one or more control points in a space within which the acoustic field may exist. Each control point is assigned an amplitude value equating to a desired amplitude of the acoustic field at the control point. Because complete control of space is not possible, controlling the acoustic field at given points yields erroneous local maxima in the acoustic field levels at other related positions. In relation to mid-air haptic feedback, these can interfere in interactions with the space by creating secondary effects and ghost phenomena that can be felt outside the interaction area. The level and nature of the secondary maxima in the acoustic field is determined by how the space is controlled. By arranging the transducer elements in different ways, unwanted effects on the acoustic field can be limited and controlled.

A thermographic detector device for a fire alarm control system is described herein. In some examples, one or more embodiments include a thermography camera configured to capture a thermal image within a field of view of the thermographic detector device, a memory and a processor to execute instructions stored in the memory to detect a fault associated with the thermographic detector device, wherein the fault includes at least one of a field of view fault, an operating parameter fault, and an internal fault, generate a fault signal upon detecting the fault, and provide a notification of the fault using the fault signal.