The subject matter of this specification can be embodied in, among other things, a position sensor system that includes a fluid effector that includes a housing having an inner surface defining a cavity, and a moveable body having a first face and a second face opposite the first face and configured to contact the inner surface and subdivide the cavity to define a first chamber and a second chamber, an acoustic transmitter system configured to emit a first emitted waveform toward the first face, and emit a second emitted waveform toward the second face, and an acoustic receiver system configured to detect a first reflected waveform based on a first reflection of the first emitted waveform based on the moveable body, and detect a second reflected waveform based on a second reflection of the second emitted waveform based on the moveable body.

Simultaneous 2-D room shape reconstruction and self-localization is accomplished using no pre-established infrastructure. A mobile device with co-located microphone and loudspeaker is used to collect echoes reflected by the walls. The system uniquely recovers arbitrary 2-D convex room shape as well as the position of mobile device 10 by collecting and processing distances between three consecutive measurement points as well as acoustic echoes from the device. A practical algorithm for room shape reconstruction and self-localization in the presence of noise and higher order echoes is proposed. Experimental results are provided to demonstrate the effectiveness of the approach.

Simultaneous 2-D room shape reconstruction and self-localization is accomplished using no pre-established infrastructure. A mobile device with co-located microphone and loudspeaker is used to collect echoes reflected by the walls. The system uniquely recovers arbitrary 2-D convex room shape as well as the position of mobile device 10 by collecting and processing distances between three consecutive measurement points as well as acoustic echoes from the device. A practical algorithm for room shape reconstruction and self-localization in the presence of noise and higher order echoes is proposed. Experimental results are provided to demonstrate the effectiveness of the approach.

Provided are a signal source space sensing method and apparatus, and an active sensing system. The method includes: a controller controls a signal transmitter to transmit a first signal to an object to be tested; the controller controls a signal receiver to receive a second signal, which is obtained after the first signal is transmitted by the object; the controller determines a coordinate relationship between the spatial position of said object and a signal source space according to the first signal and the second signal, wherein the signal source space is a coordinate space where the first signal transmitted by the signal transmitter is located; and the controller maps the second signal back to the signal source space according to the coordinate relationship between the spatial position of the object and the signal source space, to obtain a signal source space signal so as to reconstruct a sensing signal.

A method of setting up gates for athletes in a sports training area. The gates are positioned relative to each other using signals between the gates, typically in consecutive pairs. Performance parameters such as speed and agility of the athletes can then be determined. The signals enable time-of-flight measurements and therefore distance measurements between the gates which enable the relative positioning. Signals are typically but not necessarily ultrasound. Required positions of a plurality of gates are first laid out by the user as a screen pattern on a supervisory device. A method of determining wind speed between sports training gates using ultrasound signals is also provided to enable more accurate detection of athlete performance.

A sensor (10) is used for detecting at least one edge of at least one product web (1) running in a run direction (2). The sensor (10) has active elements (11), which are arranged adjacent to one another and are formed by transmitters (12) and receivers (13). In this case, the transmitters (12) can emit waves (14) which are received by the receivers (13). The product web (1) is provided for influencing the waves (14) in the radiation path between the transmitters (12) and receivers (13). In this case, a first (21, 31) and second (22, 32) of the active elements (11) are adjacent and have a mutual first spacing (41). The second (22, 32) and a third (23, 33) of the active elements (11) are also adjacent to one another and have a second spacing (42), which corresponds to at least 1.2 times the first spacing (41).

A sensor (10) is used for detecting at least one edge of at least one product web (1) running in a run direction (2). The sensor (10) has active elements (11), which are arranged adjacent to one another and are formed by transmitters (12) and receivers (13). In this case, the transmitters (12) can emit waves (14) which are received by the receivers (13). The product web (1) is provided for influencing the waves (14) in the radiation path between the transmitters (12) and receivers (13). In this case, a first (21, 31) and second (22, 32) of the active elements (11) are adjacent and have a mutual first spacing (41). The second (22, 32) and a third (23, 33) of the active elements (11) are also adjacent to one another and have a second spacing (42), which corresponds to at least 1.2 times the first spacing (41).

The present invention is a method and system for generating an area of interest for unmanned aerial vehicle (UAV) missions. Using radar and weather data, a mission area may be generated for flights which will maximize efficiency by pre-generating flight paths based on atmospheric and other data. The UAV may include artificial intelligence (AI) capabilities for processing imaging and other sensed data. Post-processing of the data may include additional AI training and processing.

The present invention relates to a safe heater based on environmental analysis, wherein the heater comprises: a heater body, which comprises a housing, a safe metal cover, a reflective cover and a power switch, wherein the power switch is used for connecting a 220V alternating current, the safe metal cover is arranged at the periphery of the reflective cover, and the housing is arranged at the periphery of the safe metal cover; an image collection device for performing panoramic image data collection on the position where the heater body is located so as to obtain and output a corresponding high-definition panoramic image; an ultrasonic emission device, which is arranged on the image collection device, and is used for emitting an ultrasonic signal towards the ground and recording the time when the ultrasonic signal is emitted; and an ultrasonic receiving device, which is arranged on the image collection device, is located near the ultrasonic emission device and is used for facing the ground to receive the ultrasonic signal reflected by the ground and emitted by the ultrasonic emission device. The safety performance of the heater can be improved by the present invention.

The present invention relates to a safe heater based on environmental analysis, wherein the heater comprises: a heater body, which comprises a housing, a safe metal cover, a reflective cover and a power switch, wherein the power switch is used for connecting a 220V alternating current, the safe metal cover is arranged at the periphery of the reflective cover, and the housing is arranged at the periphery of the safe metal cover; an image collection device for performing panoramic image data collection on the position where the heater body is located so as to obtain and output a corresponding high-definition panoramic image; an ultrasonic emission device, which is arranged on the image collection device, and is used for emitting an ultrasonic signal towards the ground and recording the time when the ultrasonic signal is emitted; and an ultrasonic receiving device, which is arranged on the image collection device, is located near the ultrasonic emission device and is used for facing the ground to receive the ultrasonic signal reflected by the ground and emitted by the ultrasonic emission device. The safety performance of the heater can be improved by the present invention.