49 results about "Direction detection" patented technology

To reliably determine the direction of the subject's gaze. [Solution] The gaze direction detection device 1 comprises a camera 10 that acquires a face image by capturing the face of subject A, and an image processing device 20 that processes the face image acquired by the camera 10 to determine the gaze direction of subject A. The image processing device 20 detects the three-dimensional positions of the right pupil, left pupil, and nose based on the face image, identifies the three-dimensional position of the intersection of a second straight line that passes through the three-dimensional position of the nose and intersects perpendicularly with a first straight line connecting the three-dimensional positions of the right pupil and the three-dimensional positions of the left pupil, and the first straight line, and determines the gaze direction of subject A using the first distance between the three-dimensional position of the intersection and the three-dimensional position of the right pupil, the second distance between the three-dimensional position of the intersection and the three-dimensional position of the left pupil, and the third distance between the three-dimensional position of the intersection and the three-dimensional position of the nose.

The embodiment of the application provides a window-cleaning robot motor rotation direction detection method and related device, and relates to the cleaning technical field.The method comprises the following steps: obtaining a pulse signal of a detection sensor; the detection sensor comprises a single-phase Hall sensor and / or a single-phase photoelectric sensor; and the rotation direction of the motor is determined according to the characteristics of the pulse signal.The above method replaces the traditional dual-phase Hall sensor or dual-phase photoelectric sensor with the single-phase Hall sensor and / or the single-phase photoelectric sensor, uses the time sequence characteristics of the pulse signal output by the single-phase Hall sensor and / or the single-phase photoelectric sensor to realize high-precision and high-reliability detection of the motor rotation direction, and effectively reduces the complexity of the cost system of the window-cleaning robot.

The application discloses a wind speed and direction sensor, a wind speed and direction detection device and a method, and belongs to the technical field of measurement and testing. The wind speed and direction sensor comprises a substrate, a heating component and a plurality of impedance measurement components. The substrate is internally provided with at least two cavities arranged along a first direction and at least two cavities arranged along a second direction; each cavity contains an electrolyte solution; the first direction is orthogonal to the second direction; the heating component is arranged on the upper surface of the substrate; a plurality of impedance measurement components are arranged corresponding to each cavity; wherein, for any cavity: a through hole is arranged on the upper surface of the substrate corresponding to the cavity, one end of the impedance measurement component contacts the electrolyte solution in the cavity, and the other end of the impedance measurement component extends to the upper surface of the substrate through the corresponding through hole; the impedance of the electrolyte solution monotonously changes with temperature. The embodiment of the application can effectively reduce the power consumption of the sensor and improve the detection sensitivity.

The utility model discloses a kind of rotating speed steering detection equipment, including a detection equipment, the detection equipment is equipped with laser emission device and laser receiving device, still including a switching head of adaptation to be detected equipment, the switching head is equipped with bar code area, the bar code area is composed of high reflection area and low reflection area alternately arranged, the laser emission device and laser receiving device are respectively used to signal transmission and receiving signal to the bar code area, to obtain the rotating speed and steering data of to be detected equipment.The signal interaction mode of laser emission device and laser receiving device is used in the application, combined with the high reflection area and low reflection area alternately arranged in switching head bar code area, laser signal feedback difference is obvious, the motion characteristics of to be detected equipment can be accurately captured, the efficient collection of rotating speed and steering data is realized, and the design of switching head adaptation to be detected equipment breaks the single to be detected equipment adaptation limitation, and improves the versatility of to be detected equipment.

The utility model discloses a vertical and horizontal integrated flash tester in the field of flash tester, this flash tester includes frame, and the middle part of frame is equipped with the measuring station for placing workpiece, and the measuring station is connected with the frame through the bottom base and can rotate horizontally relative to the base, the left end of measuring station is equipped with light source end, and the light source end contains the bottom light source of horizontal setting, is used for projecting light to the measuring station, the right end of measuring station is equipped with first detection end, and first detection end contains the first camera lens of horizontal, the first mobile module of driving this lens horizontal movement, and first camera lens periphery is equipped with the first diaphragm of projecting light to the measuring station, the top of measuring station is equipped with second detection end, and second detection end contains the second camera lens of vertical, the second mobile module of driving this lens lifting movement, and second camera lens periphery is equipped with the second diaphragm of projecting light to the measuring station. This flash tester is compatible vertical and horizontal detection structure, and can complete horizontal and vertical direction detection once, simplifies the operation process, and significantly improves the detection efficiency.

The utility model relates to tobacco machinery and detection equipment technical field, the utility model discloses a cigarette diameter detection device, including support frame, panel is established on the support frame, conveying belt is equipped with two groups, and every group is symmetrically arranged, and is located on the panel, the seat is equidistantly arranged and is distributed on the surface of conveying belt, and the seat is equipped with V -groove, and cigarette can be placed on the seat V -groove that symmetrically arranged conveying belt is established, drive mechanism is installed on the support frame, this cigarette diameter detection device realizes non -contact detection through adopting laser diameter measuring appearance, avoids the extrusion or scratch of traditional contact type detection to cigarette surface, guarantees cigarette appearance quality, and the laser diameter measuring appearance of U type structure can detect the diameter of cigarette up and down direction simultaneously, and combines the positioning effect of the V -groove of seat, effectively eliminates the measurement error that cigarette inclination leads to, and the precision is far higher than artificial detection or single direction detection.

This invention specifically relates to an adaptive compensation method for the wiring direction of a rail meter based on current flow direction detection, belonging to the field of energy metering technology. It includes: calculating the total energy based on the corrected active power through time integration; and converting this into a pulse output representing a fixed energy increment using a metering chip. In this invention, the original power value is low-pass filtered to remove high-frequency interference signals such as harmonics and instantaneous pulses from the power grid, ensuring the stability of the power detection value. Combined with a verification mechanism of three consecutive samples, it avoids the problem of misjudgment of flow direction caused by single instantaneous interference. Simultaneously, the meter program repeatedly executes the flow direction detection and wiring determination process at a fixed cycle, enabling timely response to mid-term changes in wiring methods during construction adjustments and other scenarios, adapting to the complexity of actual installation and usage scenarios.

The present application relates to the technical field of metal plate stamping processing, and particularly relates to a drawing net blanking net hole direction detection system, a control method and a storage medium, an image processing controller is configured to: calculate the actual direction of the current net hole through an image recognition algorithm, compare with a standard direction reference, calculate a direction deviation angle and generate a "detection qualified" signal or a "detection abnormal" signal; a safety interlocking unit is configured to: receive the "detection qualified" or "detection abnormal" signal; only when a valid "detection qualified" signal is received, an enabling signal allowing stamping is sent to a punch main control system; when a "detection abnormal" signal is received or no detection signal is received, a locking signal prohibiting stamping is sent to the punch main control system and an alarm is triggered. The present application replaces unreliable manual visual inspection, and eliminates product scrapping caused by direction errors from the source.

An alignment direction detection device includes an excitation coil to apply an AC magnetic field to a test object; one or more magnetic field sensors, each of which detects an inductive magnetic field caused by the AC magnetic field; a conveyance device; and processing circuitry. The processing circuitry performs band limitation on a distribution of the voltage outputted from each magnetic field sensor included in the one or more magnetic field sensors based on a radial direction space frequency corresponding to a size of the magnetic field sensor and a distance between the magnetic field sensor and the test object, transforms the band-limited voltage distribution into an output intensity waveform with respect to a space angle at the radial direction space frequency, and calculates a peak angle that is a peak position of the waveform as an alignment angle representing the alignment direction.

This invention provides a method and apparatus for detecting water flow direction. The method includes: setting up a magnetic transmission circuit (1) comprising an on-wheel magnetic circuit (1a) and a wheel-side magnetic circuit (1b), wherein the on-wheel magnetic circuit (1a) is composed of an impeller body made of magnetically conductive material or magnetically conductive material mounted on the impeller body, and the wheel-side magnetic circuit (1b) is composed of a magnet, magnetic sensor A, and magnetic sensor B, or a magnet, magnetic sensor A, magnetic sensor B, and a magnetically conductive sheet; changing the relative position of the on-wheel magnetic circuit (1a) and the wheel-side magnetic circuit (1b) by rotating the impeller, guiding the magnetic field circuit in the magnetic transmission circuit (1) to switch from magnetic sensor A to magnetic sensor B in a soft-switching manner; amplifying and shaping the magnetic induction signals output by magnetic sensor A and magnetic sensor B to obtain signal A and signal B, identifying the timing relationship between signal A and signal B, and inferring the water flow direction accordingly. The method features a simple structure, high reliability, low cost, and ease of installation and maintenance.

This invention relates to a method and system for resisting satellite navigation spoofing using an array antenna based on integrated navigation, belonging to the field of integrated navigation technology. It can improve system robustness and solve the problem of satellite navigation receiver terminals being susceptible to external spoofing interference. The method includes: S1, calculating the current carrier attitude based on the angular rate, specific force information, and magnetic flux information output by the inertial measurement unit; S2, calculating the projection of the true direction vector of the currently visible satellite in the geographic system, then projecting it onto the array antenna coordinate system according to the carrier attitude, and calculating the elevation angle and azimuth angle of the visible satellite relative to the array antenna coordinate system; S3, sampling and down-converting the satellite signal of the current epoch using digital frequency storage technology, and continuously adjusting the zero-point direction using array antenna directional nulling technology to detect whether a spoofing signal enters; S4, determining the direction of arrival of the spoofing signal; S5, shaping the array antenna radiation pattern; S6, adjusting the beam pointing to suppress the entry of spoofing signals.

The application discloses a tactile sensor with self-calibration function and direction detection. The application comprises a force detection module and a self-calibration module in the force detection module. The force detection module is two different types of silicon beams, which are a silicon beam for measuring z-axis stress and a silicon beam for measuring x / y-axis stress. The self-calibration module comprises piezoelectric material and electrodes; the piezoelectric material is located above the two different types of silicon beams respectively, and the inverse piezoelectric effect is used to drive the silicon beam to generate mechanical strain, so as to realize self-calibration of the tactile sensor. The shape of the silicon beam for measuring x / y-axis stress in the application is a circular arc instead of a traditional straight beam, which can generate greater mechanical strain under the same stress, thereby expanding the sensitivity of the tactile sensor, and the direction of the external force acting on the tactile sensor is detected through the trend of the output resistance change. The application can also calibrate and compensate errors of the tactile sensor through the self-calibration module.

The application discloses a kind of ocean storm early warning float and ocean storm early warning method, applied in ocean storm early warning float technical field, its technical solution key points are: including float platform;The suspension rod is suspended in the float platform with coaxial center along vertical direction, sliding connection detection sleeve is sleeved on the suspension rod with coaxial center, first plumb component and second plumb component for always keeping vertical are respectively arranged on the suspension rod and the detection sleeve, universal floating component is equipped between the float platform and the detection sleeve, a plurality of direction detection components and intensity detection components are respectively fixed on the detection sleeve, wind cup component for detecting wind power size is rotatably connected on the suspension rod;With technical effect is: simple structure, early warning precision is high, can realize real-time early warning.

A Type-C insertion direction detection circuit, a circuit board, and an electronic device are disclosed. The detection circuit may include: a switch module, having an input end configured to be connected to a VBUS end of the Type-C socket, the input end of the switch module is connected to a first CC end and / or a second CC end of the Type-C socket, and the switch module is configured to change an on / off status according to a first level received at the input end from the first CC end and / or the second CC end, and output a second level at a drive end of the switch module, for the electronic device to determine a plugging relationship between a Type-C plug and the Type-C socket according to the second level.

The application provides a porcelain insulator circumferential detection device, which comprises a fixed base, a rotating base, a driving assembly and a detection assembly; the fixed base and the rotating base are both in the shape of a circular arc; the rotating base comprises an arc-shaped guide rail; a gear ring extending along the circular arc shape of the guide rail is arranged on the top of the guide rail; a plurality of side pulleys are arranged on the sidewall of the guide rail; a first mounting groove extending along the circular arc shape of the fixed base is arranged on the surface of the fixed base, and a plurality of lower pulleys are arranged in the first mounting groove; the lower pulleys are in contact with the guide rail, and the side pulleys are in contact with the outer sidewall of the fixed base; the driving assembly can drive the gear ring to drive the guide rail to rotate coaxially on the surface of the fixed base; the bottom end of the guide rail is provided with the detection assembly for detecting the porcelain insulator; the detection assembly comprises a detection probe and a probe base; the detection probe is mounted on the probe base; the probe base can adjust the contact posture of the detection probe and the surface of the porcelain insulator.

[Problem] Provided is an ambient environment information transmission device capable of quickly and accurately transmitting ambient environment information to a visually impaired person. [Solution] An ambient environment information transmission device 1 includes a body 10 that is configured to be worn by a user, a distance image capturing unit 20 that is supported by the body 10 and that is configured to capture a distance image ahead of the user, a line-of-sight direction detection unit 22 that is supported by the body 10 and that is configured to detect a line-of-sight direction of the user, a control unit 40 that is configured to obtain distance information on a target portion in the line-of-sight direction in the distance image, and distance information output units 30, 32, 34 that are configured to output the distance information through sound or tactile sensation.

This application relates to a method, apparatus, device, and storage medium for detecting and protecting against intention manipulation. The method includes: acquiring historical behavioral data of user interactions with an AI system; constructing a user intention baseline vector to characterize the user's historical preference patterns across multiple decision dimensions; monitoring the user's current interaction with the AI ​​system, updating the current intention vector, and calculating the drift amount and drift direction relative to the user intention baseline vector; detecting the consistency of the drift direction over a continuous time period, and determining whether the drift direction is a uniform drift caused by natural growth or a directional drift caused by external influences; and triggering an intention manipulation risk alarm signal when the drift amount exceeds a preset threshold and the consistency judgment result of the drift direction exceeds the preset threshold. This method can improve the accuracy of identifying implicit manipulation by the AI ​​system and achieve low false alarm early warning across time dimensions.

A bottle cap warehouse capacity detection device, including feed ring, limit rod, discharge bottom plate, the limit rod is provided with a plurality, and one end is fixed on the feed ring, the other end is fixed on the discharge bottom plate, the limit rod is evenly distributed on the feed ring and the discharge bottom plate in circumference;The discharge bottom plate has a pushing port, and the discharge push hand is opposite to the pushing port to realize the bottle cap is pushed out of the bottle cap warehouse, the feed ring is annular and has a feed port, and the bottle cap enters from the feed port and is stacked in turn according to the entering order;The sensor is arranged on the pushing port and detects in the direction of the bottle cap stack, and the remaining cap number N is obtained by formula, the utility model discloses a detection device can be used to detect the remaining bottle cap number in the bottle cap warehouse in real time, and the bottle cap warehouse falling cap accuracy can be detected, the situation that the bottle cap does not come out or comes out more is detected, the stability and reliability of detection are improved, the situation in the bottle cap warehouse is judged through the digital type, and the feedback operation effect is fed back when the bottle cap warehouse acts.

The invention discloses an unsupervised polarization imaging system polarization detection direction self-calibration method, and belongs to the field of polarization imaging system calibration. The method comprises the following steps of: 1, imaging a fixed scene through a polarization imaging system to obtain scene light intensity, and calibrating a non-uniform coefficient k and a bias b of each channel through non-uniform correction to obtain normalized light intensity In; and 2, defining an analysis matrix A according to the Mueller matrix M of the polaroid, and calculating the polarization degree p according to the analysis matrix A and the normalized light intensity in the step 1. 3, taking the deviation angle as a to-be-optimized quantity, substituting the deviation angle into the step 2 for calculation, and writing p as a function of the sum I; an unsupervised optimization algorithm is adopted, under the condition that the true value of the polarization degree is unknown, p is calculated according to In by applying the mechanism of the stable polarization degree, the value is adjusted through a gradient descent algorithm, the root-mean-square error of p is made to be minimum, and self-calibration of the polarization detection direction of the polarization imaging system is achieved. The method has the advantages of being wide in application range, high in calibration speed, suitable for polarization systems with three or more channels and the like.

The utility model discloses a kind of part plane automatic detection devices, including chassis, rotatable disc and rotatable disc driving device are arranged on chassis, rotatable disc is equidistantly provided with multiple article grooves in circumferential direction on rotatable disc;First detection station, first defective box, second detection station, second defective box, third detection station and third defective box are sequentially arranged in Y direction on chassis;First industrial camera, second industrial camera and third industrial camera are arranged in three different directions on chassis;Support is arranged on chassis, suction nozzle frame and suction nozzle frame driving device are arranged on the support, first suction nozzle, second suction nozzle, third suction nozzle and fourth suction nozzle are arranged on suction nozzle frame at same interval on suction nozzle frame.The technical scheme provided by the utility model realizes that the same equipment detects three different planes of part, compared with the single direction detection of part that only current detection equipment can be carried out, the technical scheme proposed by the utility model greatly improves part plane detection efficiency.

This invention belongs to the field of machine vision inspection technology for bearing cover defects, specifically relating to a method and system for detecting bearing cover defects. Addressing the technical problems of misjudgment due to black spots on the bearing cover surface and uneven lighting caused by curved surfaces, this invention employs a dual-station architecture: the first station uses multiple light sources at different angles to individually illuminate the bearing cover, combined with a photometric stereo algorithm to synthesize images, effectively highlighting deep defects at the bottom and suppressing interference from surface black spots, while simultaneously completing the inspection of incoming material orientation and dimensions; the second station, for groups of bearing covers, first uses combined light sources to acquire images for code dot quantity and coding integrity inspection, then switches the light source mode to eliminate curved surface interference and perform placement orientation inspection. This invention links visual inspection with a robotic arm, achieving full automation from material loading and multi-dimensional inspection to the rejection of defective products, significantly improving inspection accuracy and efficiency, and effectively reducing the misjudgment rate and production losses.

Aspects of the present disclosure relate generally to a vision system that detects objects moving in an environment. The vision system detects objects that crossed a boundary of an environment during a first period of time, and determines a count of objects that crossed the boundary in a first direction. The vision system retrieves historical egress and ingress data for a second period of time corresponding to the first period of time. The historical egress and ingress data comprises a detected historic count of crossings in the first direction and a corrected historic count of crossings in the first direction. The vision system calculates an error rate for the second period of time based on a ratio of the detected historic count and the corrected historic count, and determines a corrected count for the first period of time by adjusting the count using the error rate.

This invention relates to the field of gyroscope technology and discloses a high-precision decoupled three-axis MEMS gyroscope, comprising: four execution frames orthogonally symmetrically distributed along a first direction and a second direction; four decoupling frames orthogonally symmetrically distributed along a third direction and a fourth direction; four first sensitive mass blocks orthogonally symmetrically distributed along the third direction and the fourth direction; and a fifth direction detection component, including two second sensitive mass blocks, each of which is connected to the two decoupling frames; the four decoupling frames are configured to, when detecting angular velocity around the fifth direction, drive the second sensitive mass blocks positioned along the first direction to perform detection motion along the second direction, or, when detecting angular velocity around the fifth direction, drive the second sensitive mass blocks positioned along the second direction to perform detection motion along the first direction. The high-precision decoupled three-axis MEMS gyroscope disclosed in this invention reduces the gyroscope's detection error and improves its detection accuracy and stability.

The application relates to the technical field of mobile robot positioning and environment perception, and particularly relates to a laser SLAM system degeneration direction detection method and related equipment. The method first acquires three-dimensional point cloud data through a laser sensor, inputs the acquired three-dimensional point cloud data into a point-surface matching model for feature extraction and matching, and calculates a Jacobian matrix under a geometric degeneration scene based on a nonlinear optimization theory. An information matrix is constructed through the Jacobian matrix, and a covariance matrix of pose state estimation is further generated. The covariance matrix is innovatively decomposed into a translation sub-matrix and a rotation sub-matrix, and the uncertainty distribution of the translation degree of freedom and the rotation degree of freedom is quantified respectively. By analyzing the eigenvalues and variance contribution rates of the translation sub-matrix and the rotation sub-matrix, the key spatial direction in the degeneration environment can be identified.

The utility model discloses a fan assembly direction detection device, it includes: base plate, positioning component, the positioning component includes a plurality of locating block, locating block fixedly connected on the base plate, fan component, it includes mounting panel and fan, the fan is connected on the mounting panel, a plurality of locating block is along the circumferential arrangement of mounting panel, the locating block is against the mounting panel, be provided with two -dimensional code on the fan, two -dimensional code scanner, it can be detachably connected on the base plate, and the two -dimensional code scanner is directly opposite two -dimensional code. Compared with prior art, the utility model can solve the problem of low efficiency of visual detection of fan assembly direction by artificial.

The utility model provides a kind of high-precision CCD sensor and metal plate strip edge position detection system, wherein, CCD sensor includes: linear array CCD chip, towards metal plate strip direction detection, obtain including the analog detection signal of metal plate strip edge;For the analog detection signal of linear array CCD chip is sampled and converted into digital detection signal AD signal sampling chip, AD signal sampling chip is connected with linear array CCD chip;For respectively driving linear array CCD chip and AD signal sampling chip FPGA chip, FPGA chip is connected with linear array CCD chip and AD signal sampling chip respectively;The MCU chip of interpolation processing generation detection result to digital detection signal, MCU chip is connected with FPGA chip, and for achieving and outside equipment communication communication interface, communication interface is connected with MCU chip. Real-time, high-precision detection to metal plate strip edge position can be realized.

The utility model discloses a tire all -round quick detection device relates to tire detection technical field, including detection subassembly and transfer subassembly, is equipped with the lifting assembly to the detection subassembly for detecting the tire upper portion of detection subassembly bottom and machine box top fixed connection, the detection subassembly includes two side frames that are symmetrically arranged, and a plurality of side edge CCD camera are installed on two side frames, and be equipped with rear rack between two side edge CCD camera, and be equipped with auxiliary CCD camera and a plurality of rear CCD camera on this rear rack, a plurality of camera cooperation can carry out multiple direction detection to tire simultaneously, improve the detection efficiency while improving the detection effect, a plurality of front roller conveying frame and a plurality of rear roller conveying frame can make the moving of the material platform more smooth, improve the stability of tire at the same time, the limiting frame can limit the movement of the material platform, ensure that the material platform can move to the scheduled position successfully and will not occur deviation.

Embodiments of the present disclosure provide a line-of-sight direction detection method and device, electronic equipment and storage medium. The method comprises: obtaining a binocular image, processing the binocular image based on a binocular prediction model to obtain a binocular prediction result, the binocular prediction result representing a first line-of-sight direction corresponding to the binocular image; generating monocular calibration data according to the binocular prediction result, and configuring a monocular prediction model using the monocular calibration data; and when a monocular image is detected, processing the monocular image using the monocular prediction model to obtain a target line-of-sight direction corresponding to the monocular image. The monocular calibration data is generated using the binocular image collected in a normal state and the corresponding binocular prediction result, and the monocular prediction model is calibrated, so that the monocular prediction model has similar prediction ability to the binocular prediction model used to generate the binocular prediction result, and the target line-of-sight direction obtained based on the monocular prediction model has higher accuracy.