A system for facial movement detection with reduced size and reduced cost by employing a novel resonant drive and sampling scheme is disclosed. An example battery operated system includes a driver circuit, an LC resonance circuit formed by an inductor circuit and a capacitance from an antenna, and a sample and hold circuit. The driver circuit can be configured by a controller to generate a drive signal for the LC resonance circuit, which has a resonant frequency that changes as the capacitance of the antenna varies responsive to facial movements of the user. The sample and hold circuit samples the output of the LC resonance circuit responsive to a falling edge of the drive signal for the LC resonance circuit, wherein an output of the sample and hold circuit is a sampled sense signal that may be further processed to detect facial movements of the user.

The invention relates to a method for determining an occupancy status of a parking bay, wherein a vehicle is moved along a street segment with at least one parking bay and the vehicle has a distance sensor as well as a sensor for satellite-based location and time determination. Furthermore, static parking information on the position of the parking bays in a street segment and parking information on the parking bays are on hand. By means of distance and location data projected distance data are produced which each indicate a distance datum of the distance sensor to the next object in the sensor direction at a point of the street of the street segment at the parking bay. By means of these projected distance data a standard distance is ascertained. Subsequently, for each point of a parking bay the determination is made if this is unoccupied by comparing the distance datum with the standard distance plus a delta. An area of a parking bay is determined as one or several vacant parking spaces if the rounded-down quotient of the length of the adjoining contiguous unoccupied points to the length of an average parking space is 1 or greater.

An electronic device is provided. The electronic device includes a first communication circuit, a second communication circuit, and at least one processor. The first communication circuit is configured to receive, in a first band, a first reflective signal reflected by an object, and obtain, based on the received first reflective signal, a first channel impulse response corresponding to the first reflective signal. The second communication circuit is configured to receive, in a second band, a second reflective signal reflected by the object, obtain, based on the received second reflective signal, a second channel impulse response corresponding to the second reflective signal, and obtain a third channel impulse response based on a first calculation using the second channel impulse response, a first central frequency of the first band and a second central frequency of the second band.

An electronic device is provided. The electronic device includes a first communication circuit, a second communication circuit, and at least one processor. The first communication circuit is configured to receive, in a first band, a first reflective signal reflected by an object, and obtain, based on the received first reflective signal, a first channel impulse response corresponding to the first reflective signal. The second communication circuit is configured to receive, in a second band, a second reflective signal reflected by the object, obtain, based on the received second reflective signal, a second channel impulse response corresponding to the second reflective signal, and obtain a third channel impulse response based on a first calculation using the second channel impulse response, a first central frequency of the first band and a second central frequency of the second band.

In accordance with an aspect of the disclosure, an electronic device is provided. The electronic device comprises an antenna array, a wireless communication module electrically connected to the antenna array and configured to form directional beams through the antenna array, at least one processor operatively connected to the wireless communication module; and a memory operatively connected to the at least one processor. The memory stores instructions causing the at least one processor to perform a plurality of operations comprising: transmitting a sequence of first directional beams having a first beam width to scan first regions having a first size through the antenna array, receiving a sequence of first reflected waves generated by reflection of the sequence of the first directional beams from an object through the antenna array, transmitting a sequence of second directional beams having a second beam width narrower than the first beam width to scan second regions, which are included in the first regions and have a second size smaller than the first size, through the antenna array based on at least a portion of the received sequence of the first reflected waves, receiving a sequence of second reflected waves generated by reflection of the sequence of the second directional beams from the object through the antenna array, and authenticating the object based on at least a portion of the sequence of the second reflected waves.

The present application discloses an automatic water surface skimmer, belonging to the technical field of water surface cleaning. For the existing anti-collision structure, most of impact force is transmitted to a hull through an anti-collision wheel, resulting in that the anti-collision wheel and the hull are damaged, the anti-collision effect is poor, and the service life of the anti-collision wheel and the hull is influenced. Further, garbage collected by adopting the existing solution is easily scatteredly fallen from an opening, and the collection effect is not good. The body of the automatic water surface skimmer is provided with an accommodating cavity running through upper and lower portions, such that a storage member can be placed from the top to the bottom, and it is convenient for a user to disassemble and assemble the storage member. Further, by changing the existing design that the water surface garbage enters from the opening in the front end of the storage member to the design that the garbage enters from the opening in the upper end of the storage member, the collected garbage can be effectively prevented from being scatteredly fallen from the opening in the front end, and the collection effect is good. In addition, the present application includes an anti-collision structure with at least two anti-collision wheels, such that the impact force can be effectively decomposed, the anti-collision effect is good, and the service life of the anti-collision wheels and the body can be effectively prolonged.

The present application discloses an automatic water surface skimmer, belonging to the technical field of water surface cleaning. For the existing anti-collision structure, most of impact force is transmitted to a hull through an anti-collision wheel, resulting in that the anti-collision wheel and the hull are damaged, the anti-collision effect is poor, and the service life of the anti-collision wheel and the hull is influenced. Further, garbage collected by adopting the existing solution is easily scatteredly fallen from an opening, and the collection effect is not good. The body of the automatic water surface skimmer is provided with an accommodating cavity running through upper and lower portions, such that a storage member can be placed from the top to the bottom, and it is convenient for a user to disassemble and assemble the storage member. Further, by changing the existing design that the water surface garbage enters from the opening in the front end of the storage member to the design that the garbage enters from the opening in the upper end of the storage member, the collected garbage can be effectively prevented from being scatteredly fallen from the opening in the front end, and the collection effect is good. In addition, the present application includes an anti-collision structure with at least two anti-collision wheels, such that the impact force can be effectively decomposed, the anti-collision effect is good, and the service life of the anti-collision wheels and the body can be effectively prolonged.

A sensor (10) for inspecting a tool (28) of a machine tool (24) is provided that has a radio frequency transmitter (12) for generating a radio frequency signal, a radio frequency receiver (14) for generating a received signal from a received radio frequency signal, a coupling unit (16) to couple a radio frequency signal into the tool (28) and to decouple it from the tool (28), and a control and evaluation unit (20) to determine a time of flight of a radio frequency signal transmitted from the radio frequency transmitter (12) and received again by the radio frequency receiver (14) with reference to the received signal of the radio frequency receiver (14).

A sensor (10) for inspecting a tool (28) of a machine tool (24) is provided that has a radio frequency transmitter (12) for generating a radio frequency signal, a radio frequency receiver (14) for generating a received signal from a received radio frequency signal, a coupling unit (16) to couple a radio frequency signal into the tool (28) and to decouple it from the tool (28), and a control and evaluation unit (20) to determine a time of flight of a radio frequency signal transmitted from the radio frequency transmitter (12) and received again by the radio frequency receiver (14) with reference to the received signal of the radio frequency receiver (14).

A method for detecting a parallax problem in sensor data from two sensors spaced apart from each other and at least partly capturing the same environment, wherein at least one of the sensors provides distance information. The method includes obtaining the acquired sensor data from the sensors; assigning measured values in the acquired sensor data of one sensor to corresponding measured values in the acquired sensor data of the other sensor, wherein the assignment takes the respective imaging conditions of the two sensors into account; consecutively numbering the measured values in the sensor data; checking whether a sorting order of the numbering of the measured values that correspond to each other matches, a parallax problem being determined in response to a sorting order not matching; and outputting a test result. Also disclosed is an apparatus for detecting a parallax problem in sensor data from two sensors and a transportation vehicle.