A system for detection and monitoring includes one or more light sources configured to emit light into a monitored space. At least one of the light sources is configured to emit a respective emission cone having a respective emission cone axis. One or more light sensing devices are configured to receive scattered light. At least one of the one or more light sensing devices defines a respective acceptance cone having a respective acceptance cone axis. The emission cone axis of the emission cone, and/or the acceptance cone axis of the light sensing device is angled toward the other. A processor is operatively connected to the at least one light sensing devices to evaluate the scattered light for the presence of particulates in the monitored space.

Examples of systems and methods for locating movable objects such as carts (e.g., shopping carts) are disclosed. Such systems and methods can use dead reckoning techniques to estimate the current position of the movable object. Various techniques for improving accuracy of position estimates are disclosed, including compensation for various error sources involving the use of magnetometer and accelerometer, and using vibration analysis to derive wheel rotation rates. Also disclosed are various techniques to utilize characteristics of the operating environment in conjunction with or in lieu of dead reckoning techniques, including characteristic of environment such as ground texture, availability of signals from radio frequency (RF) transmitters including precision fix sources. Such systems and methods can be applied in both indoor and outdoor settings and in retail or warehouse settings.

A method may include determining whether an electronic device having a haptic transducer is in an undesired noise-generating position and responsive to the electronic device being in the undesired noise-generating position, modifying playback of a haptic effect at the haptic transducer.

A method may include determining whether an electronic device having a haptic transducer is in an undesired noise-generating position and responsive to the electronic device being in the undesired noise-generating position, modifying playback of a haptic effect at the haptic transducer.

Systems, methods, and computer-readable media are presented herein for providing lower level physical-layer gateway functionalities and upper-level application functionalities; a system designed with flexible configurations in order to support a wide range of connected applications. The system includes a processor that executes machine instructions to perform operations. The operations comprise: receiving sensor data from a sensor device located in a building; converting the sensor data from a raw state to a physical measurement; and activating an abatement device situated in the building as a function of the physical measurement.

Systems, methods, and computer-readable media are presented herein for providing lower level physical-layer gateway functionalities and upper-level application functionalities; a system designed with flexible configurations in order to support a wide range of connected applications. The system includes a processor that executes machine instructions to perform operations. The operations comprise: receiving sensor data from a sensor device located in a building; converting the sensor data from a raw state to a physical measurement; and activating an abatement device situated in the building as a function of the physical measurement.

A gas alarm for detecting a target gas based on a resistance value of a sensor element comprises a measuring unit to measure a characteristic value of the sensor element, a heating control unit to control a heater to perform a heating process to heat the sensor element, a determining unit to determine, based on the characteristic value, whether the sensor element is in a blunt state in which sensitivity of the sensor element is decreased, and an aborting control unit to abort the heating process to determine whether the sensor element is in the blunt state when a characteristic value of the sensor element measured by the measuring unit after beginning of the heating process by the heating control unit meets a predetermined condition.

A detector device includes a light source disposed within a chamber, a sensor disposed within the chamber, a compensator circuit electrically coupled with the sensor, and a controller. The controller is operable to receive a sensor signal generated by the sensor, determine a compensation factor to adjust the sensor signal, and generate a compensation offset signal based on the compensation factor. The controller is further operable to output the compensation offset signal to the compensator circuit to produce a compensated sensor signal as an adjustment to the sensor signal, energize the light source, monitor the compensated sensor signal with respect to an alarm limit, and trigger an alarm event based on the compensated sensor signal exceeding the alarm limit.

A method for dynamically partitioning a security system is described. A security system identifies sensors registered with the security system. The security system then identifies a first partition attribute of a first group of sensors of the sensors. The first partition attribute indicates a primary partition of the security system. The security system then identifies a second partition attribute of a second group of sensors of the sensors. The second partition attribute indicates a secondary partition of the security system. The security system forms a dynamic partition of the security system based on a combination of the first and second partition attributes.

A method for dynamically partitioning a security system is described. A security system identifies sensors registered with the security system. The security system then identifies a first partition attribute of a first group of sensors of the sensors. The first partition attribute indicates a primary partition of the security system. The security system then identifies a second partition attribute of a second group of sensors of the sensors. The second partition attribute indicates a secondary partition of the security system. The security system forms a dynamic partition of the security system based on a combination of the first and second partition attributes.