A system for measuring vertical jump is disclosed, in accordance with one or more embodiments of the present disclosure. The system may include a vane assembly comprising a plurality of vanes movably coupled to an extendable member at a plurality of heights relative to a ground level, each being vane displaceable from an original position to a displaced position in response to contact from a user. The system may also include a measurement device configured to obtain at least one of: a baseline height from a first vane of the plurality of vanes to the ground level; a user height; a user reach; or a displacement height, wherein the displacement height is the height of the uppermost vane in a displaced position relative to the ground level. The system may also include a controller communicatively coupled to the measurement device.

Described herein is an ultrasound-based virus shield. The ultrasound-based virus shield may include an ultrasound sonar emitter configured to emit a first sonar signal including a header with key data, and an ultrasound sonar receiver configured to receive a second sonar signal. The ultrasound-based virus shield may include a processor configured to: calculate a distance between the ultrasound-based virus shield and a subject in response to determining that the second sonar signal includes the key data associated with the first sonar signal, and activate an ultrasound sterilizing emitter in response to determining that the distance calculated is less than a threshold distance. An ultrasound sterilizing emitter of the ultrasound-based virus shield may be configured to emit a sterilizing signal.

Described herein is an ultrasound-based virus shield. The ultrasound-based virus shield may include an ultrasound sonar emitter configured to emit a first sonar signal including a header with key data, and an ultrasound sonar receiver configured to receive a second sonar signal. The ultrasound-based virus shield may include a processor configured to: calculate a distance between the ultrasound-based virus shield and a subject in response to determining that the second sonar signal includes the key data associated with the first sonar signal, and activate an ultrasound sterilizing emitter in response to determining that the distance calculated is less than a threshold distance. An ultrasound sterilizing emitter of the ultrasound-based virus shield may be configured to emit a sterilizing signal.

The invention is embodied by a system that employs an inline metering station for (a) measuring both pressure flow and free surface flow in underground conduits without having to physically contact the fluid in the conduit, (b) operating under laminar flow and turbulent flow conditions, (c) providing continuous flow measurement, (d) offering remote data transmission to central control room or mobile device for real-time accessibility (e) detecting line sedimentary deposits (f), making computational adjustments, and (g) alerting maintenance for cleaning. In addition, embodiments of this invention are not disrupted by sewer pipe cleaning and are not limited by sewer flow velocity, depth, or Froude number.

The preferred system comprises a pair of risers (or “tubes”) mounted on top of a buried underground conduit. On top of each riser is a sensor for measuring the distance between the sensor and the surface of the fluid that is flowing below the sensor (the “sensor-fluid distance”). Using as-built conditions, the sensor-fluid distance can be used to find real-time flow depth and velocity through the underground conduit.

An ultrasonic sensor is a sensor that transmits an ultrasonic wave to a target object and receives the ultrasonic wave reflected by the target object, the ultrasonic sensor including an ultrasonic array chip on which ultrasonic elements that transmit and receive the ultrasonic wave are arranged in an array shape. Each of the ultrasonic elements includes a vibrating section and a piezoelectric element provided in the vibrating section, vibrates the vibrating section to transmit the ultrasonic wave, and outputs a reception signal of the ultrasonic wave by the vibration of the vibrating section. A resonance frequency of the ultrasonic element is 2000 kHz or less.

Aspects of the present disclosure describe snow / water level detection using distributed fiber optic sensing / distributed acoustic sensing (DFOS/DAS) and an integrated ultrasonic device that advantageously operates over existing optical telecommunications facilities carrying live telecommunications traffic - or optical facilities deployed specifically for such detection. DFOS/DAS monitoring of snow / water level advantageously monitors large areas with high sensitivity while exhibiting robustness to changing environmental conditions and employs a remote (utility pole or other mounting) mounted ultrasonic sensor/transducer that provides snow / water level data in real-time as a coded vibrational signal.

Provided are distance detection method and device for a cleaning robot, a cleaning robot, an electronic device and a non-transitory computer readable storage medium. The method includes: acquiring detection data of an obstacle detector of the cleaning robot, determining, according to the detection data, whether a distance between the cleaning robot and an obstacle reaches a first distance, where the first distance is a distance between the cleaning robot and the obstacle at a moment when a changing trend of the detection data fits a pre-set changing trend. In the embodiments of the present disclosure, whether the cleaning robot is moving to a specific position a certain distance away from the obstacle may be detected precisely. As the specific position is determined precisely, collision with obstacles can be avoided efficiently for the cleaning robot during working, and thus the distance detection method for the cleaning robot is improved.

A system is capable of scanning the layout of a room and a method for its usage. In a typical embodiment, the system consists of a mobile device that utilizes a distance sensor(s). The mobile device and/or sensor(s) rotate and travel around a room, providing multiple distance calculations that convert to degree arrays and obstacle arrays, mapping out the layout of the room without human presence.

This document describes near-object detection using ultrasonic sensors. Specifically, when an object is in a near-object range or distance from a vehicle, an object-detection system of the vehicle can utilize raw range measurements and various parameters derived from the raw range measurements. The various parameters may include an average, a slope, and a variation of the range. In the near-object range, using the parameters derived from the raw range measurements may lead to increases in the accuracy and performance of a vehicle-based object-detection system. The increased accuracy in near-object detection capability enhances safe driving.

This document describes near-object detection using ultrasonic sensors. Specifically, when an object is in a near-object range or distance from a vehicle, an object-detection system of the vehicle can utilize raw range measurements and various parameters derived from the raw range measurements. The various parameters may include an average, a slope, and a variation of the range. In the near-object range, using the parameters derived from the raw range measurements may lead to increases in the accuracy and performance of a vehicle-based object-detection system. The increased accuracy in near-object detection capability enhances safe driving.