93results about How to "Expand the detection area" patented technology

An ultrasonic sensor includes: a first vibrator for transmitting an ultrasonic wave; multiple second vibrators for outputting a reception signal of a reflection wave; a casing having a bottom for accommodating the vibrators, an outer surface of the bottom providing a vibrating surface; and multiple tubes for guiding the ultrasonic wave. Each tube has a first opening coupled with an outside of a mobile body. An area of the first opening is smaller than an area of the vibrating surface. A distance between two adjacent first openings is smaller than a distance between two adjacent vibrating surfaces. The length of the tubes is determined to equalize a phase difference of the reflection waves at the first openings is equal to that at the vibrating surfaces.

The invention relates to a license plate identification and positioning system based on a combined type vehicle-road video network. The license plate identification and positioning system based on the combined type vehicle-road video network comprises a vehicle-mounted mobile camera monitoring subsystem (1), a fixed camera monitoring subsystem (2) and a roadside information processing subsystem (3), wherein the vehicle-mounted camera monitoring subsystem (2) is installed on a probe vehicle and used for identifying and positioning vehicle license plates before or behind the probe vehicle, the fixed camera monitoring subsystem (2) is installed above a road and used for identifying and positioning all moving vehicle license plates which can be identified and positioned in a certain road section, the roadside information processing subsystem (3) is installed beside the road section monitored by the fixed camera monitoring subsystem (2) and used for receiving and processing the vehicle information identified and positioned through the vehicle-mounted mobile camera monitoring subsystem (1) and the fixed camera monitoring subsystem (2) which passes the road section, judging the traffic conditions of the road section and sending the processed vehicle information to a traffic management department.

A robot cleaner system and a control method thereof reduce manufacturing costs, expand a detected distance, and precisely control a movement and positioning of a robot cleaner. The robot cleaner system includes a robot cleaner and a station. One of the robot cleaner and the station transmits a signal of a predetermined frequency and the other receives the signal so that a direction toward the transmitting side for transmitting the signal is detected based on a Doppler shift observed by the receiving side that receives the signal.

In a keyless entry system including an in-vehicle device, and a portable device operated by a built-in battery, a request signal is transmitted from the in-vehicle device to the portable device so that wireless communication is performed between the in-vehicle device and the portable device, the portable device can set first sensitivity that is predetermined sensitivity and second sensitivity that is higher sensitivity than the first sensitivity and at which a detection area for the request signal is wide, as detection sensitivity for detecting the request signal, sets the detection sensitivity to the second sensitivity when determining that the portable device is in the vehicle's interior or within the predetermined distance from the vehicle, and sets the detection sensitivity to the first sensitivity when determining that the portable device is not in or comes to be not in the vehicle's interior or within the predetermined distance from the vehicle.

A positioning method is applied to a movable apparatus and a positioning station. The movable apparatus includes an inducting coil, and the positioning station includes a transmitting coil. The positioning method includes the following steps: transmitting a testing signal via the transmitting coil, inducting the testing signal from the transmitting coil via the inducting coil, measuring an induction value of the inducting coil and driving the movable apparatus to move towards the positioning station according to the induction value.

The invention discloses an automatic guided vehicle path planning method for routing inspection, which is applied to textile weaving routing inspection. According to the method disclosed in the invention, based on a local bidirectional closed loop and a bidirectional search algorithm, path global optimal planning in textile weaving inspection and path replanning after dynamic obstacle avoidance are effectively solved; the conflict problem of multiple automated guided vehicles in path planning is solved through arrangement and updating of time windows and a conflict negotiation strategy. A proper intelligent system is matched, and therefore the automatic and intelligent transformation and upgrading requirements of a production line in the textile weaving industry can be met.

An ultrasonic object detection system for a motor vehicle is provided. The system includes an indicator attached to a vehicle body for informing a user of an appropriate location to make an activation gesture for initiating opening of a closure member. At least one ultrasonic transducer is attached to the vehicle body. An electronic control unit is electrically coupled to the indicator and includes at least one ultrasonic driver electrically coupled to the at least one ultrasonic transducer. The electronic control unit is in communication with a plurality of vehicle controllers and is configured to receive a plurality of operational signals from the plurality of vehicle controllers, detect the activation gesture made by the user with the at least one ultrasonic transducer, and transmit an activation signal to the plurality of vehicle controllers in response to detecting the activation gesture made by the user for operating the closure member.

The invention discloses a structured light plane calibration method and system in a railway foreign matter detection scene. The method comprises the following steps: establishing a world coordinate system XYZ by taking a steel rail top plane as Z = 0; obtaining a camera calibration equation of a camera in structured light projection, an intersection point P1 of projection rays of a line laser projector and a steel rail top plane Z = 0, an intersection point P2 of projection rays of the line laser projector and the bottom of the steel rail and the height H of the steel rail; substituting the intersection point P1 and Z = 0 into a camera calibration equation, and calculating world coordinates of the intersection point P1 in a world coordinate system XYZ; substituting the intersection point P2 and Z =-H into a camera calibration equation, and calculating world coordinates of the intersection point P2 in a world coordinate system XYZ; and calculating the world coordinates of the intersection point P3 of the projection ray of the linear laser projector on the other steel rail and the steel rail top plane Z = 0 and the intersection point P4 of the projection ray of the linear laser projector and the steel rail bottom by adopting the steps, and constructing a light plane according to P1, P2, P3 and P4.

The present application provides a digital twin intelligent health prediction method and device based on vibration detection. The digital twin intelligent health prediction method based on vibration detection includes: acquiring an exercise video of a user when a health prediction instruction is received; identifying a stressed part corresponding to the current action of the user based on the exercise video of the user; determining whether the stressed part is located within the capture range of a mobile terminal; if so, obtaining a vibration video of the stressed part according to the exercise video; determining the first vibration information of the stressed part according to the vibration video of the stressed part; obtaining a first stressed condition of the stressed part from the digital twin intelligent health prediction model based on the first vibration information; and determining a first risk score of the current action of the user according to the first stressed condition. The digital twin intelligent health prediction method and device of the embodiment of the present application monitor the danger degree of the current action of the user in real time during exercises.

The invention provides a capacitive touch screen which comprises a transparent base plate, a first conducting array and a second conducting array. The first conducting array is arranged on the transparent base plate and comprises a plurality of drive components for providing drive signals, and the drive components are of hexagon. The second conducing array has a scheduled angle with the first conducting array and comprises a plurality of receiving components for receiving the drive signals provided by the plurality of drive components. The receiving components comprise bodies and a plurality of cantilever portions extending outward perpendicularly from the bodies, and a scheduled distance is arranged between the adjacent cantilever portions. The invention further provides a touch device with the capacitive touch screen. The shapes of the drive components and the receiving components are changed, the distance between the receiving components and the drive components is enlarged, and therefore mutual capacitance variation is improved, and induction sensitivity and linearity are improved.

A red light color strengthening method of traffic lights includes the steps that a red light image is continuously collected through imaging equipment, and a rough area containing the red light area is marked in the red light image; a historical red light area is initialized, and the historical red light area is as big as the rough area; a time model is provided, a red light presentation color model is built through a red light presentation color module building step, and the duration time is t color; within each t static and t color time, color strengthening is carried out on the rough area through the red light presentation color model and a red light color strengthening step, and the t color and the t static represents the on-line study time of the red light presentation color model and the time that the red light presentation color model can keep respectively; after each time of on-line study, the red light presentation color model is updated. When a rod for supporting the imaging equipment vibrates or shakes, the actual red light area can still be detected under the influence of natural factors, and therefore the color can be strengthened no matter how the representation color of the red light is.

A refrigerator comprising: a cabinet providing a refrigerating compartment and a freezing compartment; a door opening and closing the freezing compartment; an ice maker provided in a rear surface of the door to automatically supply water for making ice to the ice tray and automatically transfer the ice; a cabinet duct provided above the freezing compartment to supply the cold air for cooling the freezing compartment to the ice maker; an ice cover disposed above the ice maker and having a cover inflow hole, through which the cold air is introduced, in a position facing an outlet of the cabinetduct; and a supply duct connecting the cover inflow hole to the ice maker to provide a cold air supply passage for making ice to the inside of the ice maker.

The invention provides a fluorescent marker rice seed sorting mechanism and method. The fluorescent marker rice seed sorting mechanism comprises a blanking mechanism (1), a profiling positioning mechanism (2), a conveying mechanism (3), a detection device (4), an injection mechanism (5), a collecting channel (6), a light source (7) and a frame (8), wherein the frame (8 )comprises a support frame (81), an upper positioning plate (82), a middle positioning plate (83) and a side positioning plate (84), the detection device (4) and the injection mechanism (5) in the conveying mechanism (3) are correspondingly provided with a detection station and an injection station, the collecting channel (6) is aligned with the injection station, and the light source (7) is aligned with the detection station. The fluorescent marker rice seed sorting mechanism is simple and compact in structure, convenient to use and capable of stably, uniformly and orderly loading and transporting the seeds, the detection area is wide, multiple times of detection can be carried out, and the precision of seed sorting is greatly improved.

The present invention provides a carotid physiological parameter monitoring system, comprising: an electrocardiographic (ECG) monitoring device, a carotid pulse wave detector, and at least one controller. The ECG monitoring device is disposed on a user's left and right wrists or on the user's chest to obtain ECG waveforms. The carotid pulse wave detector is disposed on the user's neck at a position corresponding to the user's carotid arteries for obtaining carotid pulse waveforms. The controller is provided in at least one of the ECG monitoring device, the carotid pulse wave detector, and a mobile device, wherein the controller is configured to obtain the user's carotid physiological parameter(s) (which may include carotid pulse wave velocity or carotid blood pressure) by calculating with the ECG waveforms and/or the carotid pulse waveforms.

A sensor for a coordinate input device includes an x-direction loop coil group including a plurality of loop coils arranged in an x direction, each loop coil having at least two linear sections perpendicular to the x direction, and a y-direction loop coil group including a plurality of loop coils arranged in a y direction, each loop coil having at least two linear sections perpendicular to the y direction. A terminal portion including a plurality of terminals is provided in the vicinity of an edge portion of the x-direction or y-direction loop coil group. Lines are disposed between the linear sections of the loop coils of the x-direction loop coil group or the y-direction loop coil group to provide connections between the terminals of the terminal portion and the corresponding loop coils of the x-direction loop coil group and the y-direction loop coil group.

A triaxial force sensor 1 includes nine first electrodes 11 to 19, and nine second electrodes 21 to 29 attached to an electrode support 10 in such a manner that the electrode support 10 is interposed between the nine first electrodes 11 to 19 and the nine second electrodes 21 to 29. A pair of first electrodes 14 and 16 are arranged such that a straight line connecting the two is orthogonal to a straight line connecting a pair of first electrodes 12 and 18, and the second electrodes 22, 24, 26, and 28 are arranged such that the respective halves overlap the first electrodes 12, 14, 16, and 18 in plan view. The sensor has a number of components and size, thereby allowing a reduction in manufacturing cost, in the case of detecting forces in orthogonal triaxial directions.