An apparatus including two or more spaced apart ferromagnetic sensors arranged to detect and screen ferromagnetic objects, and, when a ferromagnetic object is detected, the screening is configured to be substantially independent of the sensor-object distance.

An apparatus including two or more spaced apart ferromagnetic sensors arranged to detect and screen ferromagnetic objects, and, when a ferromagnetic object is detected, the screening is configured to be substantially independent of the sensor-object distance.

The present invention discloses a drone, comprising a cyclical hull with one or more cyclical rings, an external structure, and a piezoelectric system. The external structure comprises a fixed wing and a rotary turbine construction. The external structure is securely and rotationally connected to the cyclic ring. The external structure is configured to rotate exponentially around the cyclical hull, thereby enabling a stabilization capability of the drone to forward in the desired direction. The piezoelectric system is mounted on the cyclical hull for efficiently analyzing onward wind direction, thereby effectively rotating the external structure at high speeds to enable the structural integrity of the drone. The drone further comprises one or more locking systems to unlock the cyclical rotational turbine based on an alert received from the piezoelectric system. Further, the drone comprises a camera for capturing a surrounding view of the drone.

The measuring device includes a substrate intended to be arranged on an aerodynamic surface; a profiled element connected at one of its ends to the substrate, and configured to be oriented, under the effect of the fluid flow; a magnet that is secured to the profiled element and is configured to generate a magnetic field; and a measuring element that is configured to measure a value of the magnetic field and to convert this measured value of the magnetic field into an angle value indicating the direction of the fluid flow; the measuring device thus making it possible to measure and provide, in real-time, a numerical angle value with which it is possible to define with high precision the direction of the fluid flow relative to the aerodynamic surface.

The measuring device includes a substrate intended to be arranged on an aerodynamic surface; a profiled element connected at one of its ends to the substrate, and configured to be oriented, under the effect of the fluid flow; a magnet that is secured to the profiled element and is configured to generate a magnetic field; and a measuring element that is configured to measure a value of the magnetic field and to convert this measured value of the magnetic field into an angle value indicating the direction of the fluid flow; the measuring device thus making it possible to measure and provide, in real-time, a numerical angle value with which it is possible to define with high precision the direction of the fluid flow relative to the aerodynamic surface.

A sensor assembly for monitoring a heater system for an aircraft probe sensor includes a current sensor module with a current sensor core and a high electromagnetically permeable enclosure around the current sensor core. An input wire pathway extends through the current sensor core and is configured to receive a heater input wire. A return wire pathway extends through the current sensor core and is configured to receive a heater return wire. A high electromagnetically permeable tube extends through the current sensor core and is configured to extend around one of the input wire and the heater return wire.

A wind direction indicator includes a smoke generator, a housing, an electrical power source, an air pump and a switch all arranged such that the indicator may be actuated by a user using a single hand. The smoke generator may be a cartomizer as an example. The indicator may include a rechargeable battery, a power outlet circuit and a SD card reader and transmitter for transmitting data from the SD card to a cellphone via a wireless connection such as Wi-Fi or bluetooth.

A wind direction indicator includes a smoke generator, a housing, an electrical power source, an air pump and a switch all arranged such that the indicator may be actuated by a user using a single hand. The smoke generator may be a cartomizer as an example. The indicator may include a rechargeable battery, a power outlet circuit and a SD card reader and transmitter for transmitting data from the SD card to a cellphone via a wireless connection such as Wi-Fi or bluetooth.

In one illustrative configuration, an air quality monitoring system may enable wide-scale deployment of multiple air quality monitors with high-confidence and actionable data is provided. Further, the air quality monitoring system may enable identifying a target emission from a plurality of potential sources at a site based on simulating plume models. The simulation of plume models may take into consideration various simulation parameters including wind speed and direction. Further, methods of determining a plume flux of a plume of emissions at a site, and methods of transmitting data from an air quality monitor are disclosed.

An optical detection system includes a marker product and an optical encoding device. The marker product includes a substrate and at least one structural portion. The structural portion has a first surface, a second surface and a dividing axis. The first surface and the second surface are arranged on opposite sides of the dividing axis. A sidelong direction aligning the first surface with the second surface is parallel to a moving direction between the optical encoding device and the marker product. The optical encoding device is disposed adjacent by the marker product. The optical encoding device includes an optical projector and an optical encoder. The optical projector is configured to project the optical detecting signal onto the marker product. The optical encoder is configured to receive an optical reflecting signal from the marker product and encode intensity variation of the optical reflecting signal into digital data.