A method for finding door location in an automated way based on observations of people that are equipped with a device whose position is determined acoustically. By observing positioning transitions across internal structures such as walls, the location of doors can be automatically identified.

Methodology to combine Wave Mechanics with Retro-Reflection, to take in the Far Field emitted (incident) Wideband signal via a small array, process the signal and Retro-Reflectively re-transmits the Wideband signal back out, with the Wave Mechanics rotation mechanism injected into the array weights.

Methodology to combine Wave Mechanics with Retro-Reflection, to take in the Far Field emitted (incident) Wideband signal via a small array, process the signal and Retro-Reflectively re-transmits the Wideband signal back out, with the Wave Mechanics rotation mechanism injected into the array weights.

The present disclosure provides a microfluidic substrate, a microfluidic chip and a detection method. The microfluidic substrate according to the present disclosure includes a first substrate, and a plurality of droplet detecting elements on the first substrate and in an array. Each of the plurality of droplet detecting elements includes an ultrasonic conversion device and a voltage detecting element, the ultrasonic conversion device is configured to generate ultrasonic wave according to a first electric signal, receive a reflected ultrasonic wave, and convert the reflected ultrasonic wave into a second electric signal; and the voltage detecting element is configured to detect the second electric signal and determine whether a droplet exists at a position where the droplet detecting element is located based on the second electric signal.

The present disclosure provides a microfluidic substrate, a microfluidic chip and a detection method. The microfluidic substrate according to the present disclosure includes a first substrate, and a plurality of droplet detecting elements on the first substrate and in an array. Each of the plurality of droplet detecting elements includes an ultrasonic conversion device and a voltage detecting element, the ultrasonic conversion device is configured to generate ultrasonic wave according to a first electric signal, receive a reflected ultrasonic wave, and convert the reflected ultrasonic wave into a second electric signal; and the voltage detecting element is configured to detect the second electric signal and determine whether a droplet exists at a position where the droplet detecting element is located based on the second electric signal.

An approach for providing a lower cost real time location system in less trafficked areas of a building. This approach uses on-board audio capabilities of a mobile device to receive a room response trace resulting from a self-generated acoustic signal. By comparing the room response trace to a modeled room response trace, the location of the mobile device is determined.

Systems and methods are disclosed in which a playback device transmits a first sound signal including a predetermined waveform. In one example, the playback device receives a second sound signal including at least one reflection of the first sound signal. The second sound signal is processed to determine a location of a person relative to the playback device, and a characteristic of audio reproduction by the playback device is selected, based on the determined location of the person.

The invention relates to a handling device or layer forming device (10) and a method for forming piece good layers. Piece goods (14) are conveyed on a horizontal conveying device (16) to a grouping station and/or layer forming station (12) comprising a manipulator (20). In a work cycle, the manipulator (20) seizes at least one piece good (14) and moves it into a target position or target alignment, in particular with regard to a piece good layer to be formed. The horizontal conveying device (16), which is arranged upstream of the grouping station and layer forming station (12), comprises at least one sensor device (24) for obtaining positional data or dimensional data or alignment data of the transported piece goods (14). Based on the obtained data, the control device (28) controls the movements of the manipulator (20) within the movement range for the purpose of the layer formation.

The invention relates to a handling device or layer forming device (10) and a method for forming piece good layers. Piece goods (14) are conveyed on a horizontal conveying device (16) to a grouping station and/or layer forming station (12) comprising a manipulator (20). In a work cycle, the manipulator (20) seizes at least one piece good (14) and moves it into a target position or target alignment, in particular with regard to a piece good layer to be formed. The horizontal conveying device (16), which is arranged upstream of the grouping station and layer forming station (12), comprises at least one sensor device (24) for obtaining positional data or dimensional data or alignment data of the transported piece goods (14). Based on the obtained data, the control device (28) controls the movements of the manipulator (20) within the movement range for the purpose of the layer formation.

Method for determining a sound field in an enclosed space or at a target position within the enclosed space, the method has the following steps: performing an acoustic measurement at at least one measurement position within the enclosed space or at a single one measurement position within the enclosed space to obtain an interim value set; estimating a surface impedance as first parameter describing the enclosed space based on the interim value set; determining a model of the enclosed space based on the first parameter; and estimating a sound field throughout the enclosed space based on the model of the enclosed space, the sound field describing a sound characteristic for a plurality of positions within the enclosed space.