A wind detection device with a flexible enclosure, and opening, and a dispensing tube, filled with powder or liquid and designed to be attached to hunting equipment, headgear, or clothing, wherein pressing on the outside of the device causes a puff of powder or vapor to be dispensed into the air, allowing the user to determine wind direction.

A wind detection device with a flexible enclosure, and opening, and a dispensing tube, filled with powder or liquid and designed to be attached to hunting equipment, headgear, or clothing, wherein pressing on the outside of the device causes a puff of powder or vapor to be dispensed into the air, allowing the user to determine wind direction.

In one embodiment of an aircraft emergency oxygen delivery system, power can be generated by the flow of gas over a transducer disposed inside an oxygen delivery tube. A pressure differential gives rise to a temperature difference across the transducer, and the temperature difference can be converted to a voltage. The voltage can be quadratically dependent upon the Mach number M (e.g. flow velocities from 1 to 140 m/s) and proportional to a Seebeck coefficient of the transducer. The power thus generated may be used to operate LED indicators visible from the exterior of the tube, a variety of sensors, and wireless communication with a central control system. Oxygen flow to a mask may be adjusted based on ambient oxygen content and data collected from a passenger wearing the mask, including a blood oxygen saturation level, pulse or respiration rate.

The present disclosure describes various systems and methods for measuring environmental parameters. In one embodiment, such as system comprises a pole that is equipped with various instruments (sensors) at various heights along the length of the pole. With such an instrumented pole, a local vertical profile of parameters that relate to wind conditions and air quality can be obtained. These parameters can include one or more of wind speed and direction, air turbulence, air temperature and humidity, concentrations of pollutant gases within the air, and concentrations of pollutant particles within the air. In some embodiments, the system can further measure other parameters that are relevant to the migration of the air and, therefore, the pollutants it contains.

A visualization device for a flow field includes a chamber, a power supply, at least one pair of electrodes, and at least one flow field observation module. The flow field observation module includes a high-speed camera, a light detecting component, and a light filter component. The power supply outputs a voltage to generate a plasma, and the pair of electrodes is disposed in the chamber. The flow field observation module is disposed outside the chamber and captures an image of a fluid particle excited by the plasma toward the chamber. The light filter component is disposed between the high-speed camera and the chamber. The light detecting component obtains a light information within the chamber and sends the light information to the light filter component.

A plumbing fixture assembly including a fluid flow detection system for monitoring fluid flow and flow characteristics through plumbing fixtures without contacting the fluid. The fluid flow detection system communicates collected data related to the plumbing fixtures to a water management system, which analyzes the data and provides information to a user through a portal and user interface. The fluid flow detection system also tracks users of the plumbing fixtures for compliance with a hand washing routine. The hand washing compliance data is communicated to the water management system as well.

A wind detection device with a flexible enclosure, and opening, and a dispensing tube, filled with powder or liquid and designed to be attached to hunting equipment, headgear, or clothing, wherein pressing on the outside of the device causes a puff of powder or vapor to be dispensed into the air, allowing the user to determine wind direction.

A method for providing air quality information is disclosed. The method includes steps of collecting single-point air quality data from a plurality of mobile devices in a predetermined period of time, wherein the single-point air quality data is sensed by an actuating and sensing module of the mobile device and transmitted to a cloud data processing device through communication transmission. The single-point air quality data is combined with geographic information and processed to generate a real-time air quality map by the cloud data processing device. After the cloud data processing device receives a current location from a client device through communication transmission, information including a motion direction, a designated route, air quality information related to the current location, abnormal-air-quality notification or an evacuated route is transmitted to the client device.

A plumbing fixture assembly including a fluid flow detection system for monitoring fluid flow and flow characteristics through plumbing fixtures without contacting the fluid. The fluid flow detection system communicates collected data related to the plumbing fixtures to a water management system, which analyzes the data and provides information to a user through a portal and user interface. The fluid flow detection system also tracks users of the plumbing fixtures for compliance with a hand washing routine. The hand washing compliance data is communicated to the water management system as well.

A movement analyzer includes a position information acquiring device, a memory, and a processor. The processor executes a program to perform operations including acquiring position information of the movement analyzer with the position information acquiring device, determining whether or not a moving state of the movement analyzer is a specific moving state, and recording the position information corresponding to the specific moving state in the memory as a path of the specific moving state when a determination result indicates that the moving state of the movement analyzer is the specific moving state.