388results about "Compasses" patented technology

The invention relates to the technical field of aviation communication, and discloses a true north calibration system and method for an aviation airborne laser communication equipment alignment system, and the method comprises the steps: synchronously collecting flight data through an IMU sensor and a double-antenna GPS at a preset sampling frequency, and outputting the real-time attitude angle information of an aircraft through an IMU; filtering and de-noising the synchronously acquired IMU and double-antenna GPS data, and carrying out noise suppression and deviation compensation on accelerometer and gyroscope data output by the IMU by adopting a Kalman filtering algorithm; based on the preprocessed sensor data, calculating an initial course angle by measuring relative position change and phase difference between antennas by using a double-antenna GPS (Global Positioning System); the calibration controller transmits the calculated true north direction information to an alignment system of the laser communication equipment in real time through a communication interface; and the attitude change and external environment disturbance of the aircraft are continuously monitored in the whole flight process. The method has the advantage that the alignment performance and the communication stability of the laser communication equipment are improved.

The present invention discloses an apparatus for quickly finding a planet by using a mobile phone, including: a digital telescope, an electronic compass, a pan / tilt configured to install the digital telescope, a mobile phone, a PC terminal, and a data converter. The digital telescope includes a telescope housing. A main camera configured to photograph target starry sky and a planet-finding camera configured to search for and photograph a target planet are disposed at one end that is of the telescope housing and that faces starry sky. The present invention is used more easily when a user's professional level is reduced.

In one embodiment, a method includes accessing a first series of first magnetic values that represents a first magnetic recording that includes a first set of first magnetic measurements. Each of the first magnetic values represents one of the first magnetic measurements. The method includes accessing a second series of second magnetic values that represents a second magnetic recording that includes a second set of second magnetic measurements. Each of the second magnetic values represents one of the second magnetic measurements. The method includes approximately aligning the first and second series with each other; calculating a difference between the first and second series as aligned with each other; and determining a similarity between the first and second series based on the difference.

A wearable electronic device including a magnetic strap is provided. The wearable electronic device includes a communication module, a geomagnetic sensor, a motion sensor, memory storing one or more computer programs, and one or more processors communicatively coupled to the communication module, the geomagnetic sensor, the motion sensor, and the memory, wherein one or more computer programs include computer-executable instructions that, when executed by the one or more processors individually or collectively, cause the wearable electronic device collect geomagnetic measurement values collected using the geomagnetic sensor, determine whether to update a reference magnetic field stored in the memory on the basis of offset update information of the geomagnetic sensor, when updating the reference magnetic field, designate, as reference data, geomagnetic measurement values satisfying a first condition collected within the effective time of the reference magnetic field, a second condition for collecting of magnetic field strengths within an average error range, and a third condition collected within a movement range through the motion sensor, and update the reference magnetic field based on the designated reference data.

The invention provides a low-altitude target monitoring, positioning and tracking method and system based on a civil network, and the method comprises the steps: enabling a plurality of terminal devices at different positions to point to and align at a low-altitude target, collecting target measurement data, and uploading the target measurement data to a background server through the civil network; performing abnormal point detection and elimination by adopting a Z-score detection and dynamic time window filtering method, judging a target batch and a target type according to uploaded data, states and time intervals, and storing the target batch and the target type in a database in an original data form; performing fusion processing on a plurality of pieces of uploaded data through a trajectory fusion algorithm to form a target trajectory, and monitoring, positioning and tracking a low-altitude target; and the target track is sent to a front-end server for target fusion result display, and track information of all the low-altitude targets is completely displayed. According to the invention, data are collected through the terminal equipment, low-altitude targets are monitored, positioned and tracked based on a civil network, low-altitude, slow and small targets are detected and found in time, the detection efficiency is improved, and the system equipment cost is reduced.

The invention relates to a measurement precision correction method for a digital geological compass. The method comprises the following steps: determining the magnetic field stability of a target position according to the difference between total magnetic field intensities in a first interval; determining a magnetic field interference coefficient at the moment according to a difference value between the total magnetic field intensity at each moment and the total magnetic field intensity at the target moment; determining the integrating degree of the point source model at the previous moment according to the difference between the magnetic field interference coefficients at each adjacent moment and the duration of the interval between each adjacent moment and the initial moment; determining a target duration according to the magnetic field interference coefficient in the second interval and the duration of the interval between each moment and the initial moment, and correcting the magnetic field data of each axis of the compass according to the target duration and the difference between the magnetic field data of each axis at the target moment and the magnetic field data of the axis in the first interval; and carrying out azimuth calibration on the compass according to the corrected magnetic field data of each axis and the longitude and latitude of the target position. The method can improve the accuracy of geological survey.

The invention discloses an intelligent door lock body attitude measurement and dynamic compensation control method, system, equipment and medium, and relates to the technical field of measurement and survey, and the method comprises the following steps: collecting pitch angle and roll angle data, and generating real-time attitude information by using Kalman filtering; a laser ranging module based on the time flight principle is adopted to measure the distance between the lock body and the reference structure, and the measured distance is corrected in combination with data of a temperature sensor; a Hall effect magnetic sensor and an MEMS electronic compass are installed in the lock body, and magnetic field data are fused through low-pass filtering; building a digital twinborn model by utilizing the acquired attitude, correction distance and azimuth data, and simulating the three-dimensional attitude of the lock body; the real-time space coordinates of the lock body are calculated through a triangulation method, and closed-loop control is carried out. According to the invention, the precision of data fusion and the stability of the system are improved, the influence of external interference on the measurement result is reduced, and a reliable dynamic compensation control scheme is provided for the intelligent door lock system.

A system for a host vehicle operating on a road surface includes a polarimetric camera, a global positioning system (“GPS”) receiver, a compass, and an electronic control unit (“ECU”). The camera collects polarimetric image data of a drive scene, including a potential driving path on the road surface. The ECU receives the polarimetric image data, estimates the Sun location using the GPS receiver and compass, and computes an ideal representation of the road surface using the Sun location. The ECU normalizes the polarimetric image data such that the road surface has a normalized representation in the drive scene, i.e., an angle of linear polarization (“AoLP”) and degree of linear polarization (“DoLP”) equal predetermined fixed values. The ECU executes a control action using the normalized representation.

The disclosure is directed to a system for determining a geographic location of device. The system includes at least one antenna and a controller. The at least one antenna is configured to detect magnetic field signals. The controller is configured to identify a first set of magnetic field signals including one or more magnetic field signals having a change in angle of arrival less than or equal to a predetermined angle of arrival threshold value or a change in the location of a source less than or equal to a predetermined location threshold value. The controller is further configured to identify a second set of magnetic field signals including one or more magnetic field signals having signal strength range within a predefined signal strength range. The controller is further configured to determine a geographic location of a device based on the identified second set of magnetic field signals.

The invention relates to a novel magnetic compass autodyne correction auxiliary device and method. The novel magnetic compass autodyne correction auxiliary device comprises an electronic compass, a three-axis magnetic field intensity meter and a data terminal, the output ends of the electronic compass and the three-axis magnetic field intensity meter are connected with the data terminal, and the three-axis magnetic field intensity meter is used for quantitatively measuring environmental magnetic field distortion measurement data; the electronic compass is used for acquiring magnetic heading information; the output end of the data terminal is connected with the magnetic compass autodyne correction device, and is used for receiving information from the electronic compass and the three-axis magnetic field intensity meter, calculating compass north pointing force and autodyne force through magnetic compass autodyne correction software according to a magnetic compass autodyne correction equation, calculating the correction amount of the magnetic compass autodyne correction device, and outputting the correction amount of the magnetic compass autodyne correction device. And outputting an autodyne correction result through the magnetic compass residual autodyne table or the residual autodyne curve, and outputting the autodyne correction result to the magnetic compass autodyne correction device. Quantitative description of the distortion degree of the working magnetic field of the magnetic compass and detection of the autodyne correction result are completed through the sensor, and the ship operation cost is saved.

The invention relates to the technical field of calibration, and particularly discloses a compass calibration method, which comprises the following steps of: acquiring magnetic field and acceleration data in real time by using a three-axis magnetometer and an accelerometer, and establishing an error calibration model to compensate the bias, proportional error and non-orthogonal error of a sensor; constructing a Jacobian matrix by analyzing the influence of attitude orientation on the sensitivity of calibration parameters, and determining an optimal attitude by adopting a Gauss-Newton method; and calculating a parameter estimation change rate and a generalized likelihood ratio index in real time, and dynamically adjusting a batch processing window length and a forgetting factor by using fuzzy logic to adapt to the dynamic change of the magnetic field. According to the method, high-precision real-time compensation of dynamic magnetic field interference is realized, and the precision and robustness of compass calibration are improved.

The invention discloses an excavator operation pose monitoring method, system and equipment and a medium, and relates to the field of excavators. The method comprises the following steps: processing a video by using a rotating target detection model to obtain four-dimensional coordinates and a rotating angle of a forearm; the first distance between the tail end of the forearm and the cab is obtained according to the four-dimensional coordinates and the rotation angle, the first height of the tail end of the forearm is calculated according to the width and the vertical coordinates of the tail end of the forearm in the image frame of the video in combination with the height from the camera to the ground and the first distance, and the second distance and the second height are obtained through correction of the gradienter; working point coordinates of the tail end of the forearm are obtained according to cab positioning information, azimuth angle information, the second height and the second distance; when the working state of the excavator bucket is changed, working information is recorded, and whether the state of the excavator is normal or not is detected according to the working information. By implementing the technical scheme provided by the invention, the precision and reliability of monitoring the operation pose of the excavator are improved.

A locator device system formed by a pair of locator devices that provide an illuminated display indicating a location of another locator device. Each locator device includes a case having an exterior with a front surface and a plurality of visual indicators. The visual indicators switch between illumination states and, when illuminated, are observable by observing the front surface of the case. A controller changes the illumination states based on a position of the other locator devices. A user interface receives user inputs including pairing input for pairing the locator devices to one another. When the locator devices are paired together and are located at a predefined location relative to one other, the controller changes a selected visual indicator located a direction corresponding to a direction heading towards the other one of the pair of locator devices from the first illumination state to the second illumination state.

The invention discloses electronic digital compass equipment, which comprises a vector sensing module, a data processing module, a trigger module, a result output module and a storage module, and is characterized in that the vector sensing module is used for acquiring original vector data required by geological survey, and ensuring the accuracy and environmental adaptability of data acquisition; the data processing module is used for receiving original data of the vector sensing module and calculating geological elements through coordinate transformation, vector operation and a calibration algorithm, the trigger module is used for controlling measurement starting time and ensuring that equipment collects data in a stable state, and the result output module is used for displaying the geological elements of a measurement surface in real time in a digital mode. The storage module is used for storing data according to a geological survey format to avoid artificial transcription errors; according to the invention, through an electronic and digital measurement mode, accurate measurement of geological elements of field geological levels or sections is realized, and the precision and efficiency of measurement of geological elements such as tendency and trend in geological survey are effectively improved.

The embodiment of the invention relates to the technical field of electronic equipment, in particular to electronic equipment. The embodiment of the invention aims to solve the problem that an electronic compass is relatively large in measurement result error in electronic equipment with an unfixed form. According to the electronic equipment, the second middle frame is connected with the first middle frame in a foldable mode, the first sensor is used for obtaining first magnetic field data nearby the first sensor, the first sensor is arranged on the first middle frame or the second middle frame, the second sensor is used for obtaining second magnetic field data nearby the second sensor, and the second sensor is arranged on the first middle frame or the second middle frame. The processor is used for determining geomagnetic field data of the position of the electronic equipment according to the first magnetic field data and the second magnetic field data, so that the influence of an interference magnetic field on the geomagnetic field data can be effectively reduced, and the error of the electronic compass is reduced.

The invention belongs to the field of avionics system design, and particularly relates to a large amphibious aircraft radio compass deviation calibration method, which comprises the following steps of: completing installation, calibration and power-on inspection according to the size of an aircraft and part of airborne equipment, and calibrating a site environment state, coordinates of a ground omnidirectional beacon station and the like. The invention provides a compass deviation calibration method for the radio compass of the aircraft, so that the radio compass compass deviation calibration of the aircraft can be more efficiently completed in a general assembly base, the cost is reduced, and the production efficiency is improved.

This utility model provides a multifunctional boat-shaped compass box, comprising: a hull and a magnet; wherein the hull is placed horizontally, and the magnet is disposed inside the hull; the multifunctional boat-shaped compass box is one or more of the following: a compass box, a threaded compass box, a floating compass box, a pin-type compass box, and a magnetic powder compass box. This multifunctional boat-shaped compass box, by equipping it with a neodymium iron boron perforated plate, a bar magnet, a razor blade, magnetic powder, etc., can be made into compasses of various shapes and types, allowing for various games based on compass characteristics, increasing the fun of teaching and improving teaching efficiency.

The utility model discloses a three-dimensional electronic compass module which is characterized in that the three-dimensional electronic compass module comprises an electronic compass main body and four groups of adjusting components respectively arranged at four corners of the electronic compass main body, mounting holes are formed in the four corners of the electronic compass main body, and each group of adjusting components comprises mounting sleeves respectively arranged in corresponding mounting interiors. When the three-dimensional electronic compass module is installed, the installation sleeve is fixedly installed on equipment, and after installation is completed, the elastic piece on the corresponding adjusting assembly can be made to stretch out and draw back by adjusting the adjusting nut on a certain adjusting assembly, so that the three-dimensional electronic compass module is installed. Therefore, the height of the corresponding angle of the electronic compass main body can be adjusted, namely the electronic compass main body can be adjusted to be in a horizontal state, so that the electronic compass main body is kept in the horizontal state after being mounted, and inaccurate data caused by inclination of the electronic compass main body after being mounted is avoided.

The present invention relates to the field of ground stress detection technology, and discloses a reusable full-sensing stress measurement mechanism and a method for using the mechanism, wherein a glue injection hole is opened on the side wall of the outer cylinder of the stress gauge, and a plastic film is arranged in the glue injection hole; when the inner cylinder of the stress gauge slides along the outer cylinder of the stress gauge, the inner cylinder of the stress gauge can be rotated by a first linkage mechanism; the gear sleeve can be detachably connected to the inner cavity of the inner cylinder of the stress gauge by a clamping mechanism, and when the inner cylinder of the stress gauge rotates, the gear sleeve can be driven to rotate synchronously by a second linkage mechanism, the clamping mechanism has an assembly position and a disassembly position, and when the gear sleeve rotates, the clamping mechanism can be switched between the assembly position and the disassembly position; when the gear sleeve rotates, the gear sleeve can be made to slide along the telescopic sleeve by a third linkage mechanism; the sensor module is used to be detachably connected to the telescopic sleeve. The present invention is convenient to use, adaptable to various drilling conditions, and the sensor module can be promptly withdrawn and reused.

The invention discloses a float type MEMS vector hydrophone system, and belongs to the technical field of underwater acoustic detection and ocean sensing. The system comprises a buoy, an MEMS vector hydrophone unit, a signal conditioning circuit, an electronic compass module and an output interface unit. The MEMS vector hydrophone unit is installed at the bottom of the buoy, the signal conditioning circuit and the electronic compass module are installed inside the buoy, and the output interface unit is installed at the top of the buoy and comprises two independent watertight plugging interfaces which output analog and digital signals respectively. The system is high in structural integration level, high in attitude sensing capability, excellent in signal quality and suitable for application scenes such as ocean buoy laying, underwater array deployment and distributed underwater acoustic observation.

The present invention discloses a geological compass and a method for using the same. The compass comprises a compass box and a positioning assembly for detecting a position. The positioning assembly is installed in the compass box. The compass box comprises an observation port and an accuracy line. The observation port and the accuracy line are at the same height and are respectively arranged on the front and rear end surfaces of the compass box. The positioning assembly comprises a compass, a slope angle detector, a level and an adjustment assembly. When the geological compass is in use, the compass can simultaneously detect the azimuth and level of the location and the slope angle between the detected object and the detection point. At the same time, the azimuth and angle detected by the compass and the slope angle detector can be recorded by pressing a pressing adjustment mechanism or pulling a rotating adjustment mechanism.

Provided are a portable aircraft communication navigation system detection device and a detection method for the same. The portable aircraft communication navigation system detection device comprises a body, a radio frequency signal analysis assembly, a radio frequency signal generation assembly, a control assembly, and the like. The radio frequency signal analysis assembly comprises a standing wave analysis module, a power / frequency analysis module, a 30 dB attenuator, two radio frequency input ports, and one radio frequency output port. The radio frequency signal generation assembly comprises a radio frequency module, a program-controlled attenuator, a communication signal output port, and a navigation signal output port. The control assembly comprises a main control unit, a touch display, and the like. The present application is dedicated to solving the technical problems that hidden faults of an external field communication system cannot be found, a navigation system requires many first-line maintenance support devices, and a compass signal cannot be received in a hangar or hangar, thereby leading to the fact that the compass cannot be checked. The present application can quickly complete the first-line in-situ performance detection of short-wave radio stations, ultra-short-wave radio stations, filters, power adders, antennas, and the like, and is suitable for the inspection of communication navigation devices of various types of aircraft.

The invention belongs to the technical field of geological mineral exploration tools, and particularly relates to a geological compass for geological mineral exploration, which comprises a compass and further comprises a fixed block, the fixed block is fixedly connected to the bottom surface of the compass, a movable groove communicated with the outside is formed in the fixed block, and a movable block is movably connected in the movable groove; the two limiting grooves are formed in the movable block and communicate with the movable groove, and first extrusion blocks are slidably connected into the two limiting grooves correspondingly; the first sliding grooves are formed in the movable blocks and communicate with the two limiting grooves, extrusion rods are slidably connected into the first sliding grooves, and the top ends of the extrusion rods make contact with the ends, close to each other, of the two first extrusion blocks. The compass can still be normally used on the uneven ground, the problem that the pointing reading of the magnetic needle is deviated is prevented, and the accuracy of data measured by the compass is improved.

The present invention relates to a micro-robot for internal detection of the oil content in a transformer, which comprises a housing, a control module, an image acquisition module, a navigation module, a propulsion module and a power supply. The control module, the image acquisition module, the navigation module and the power supply are installed in the sealed housing. A groove for accommodating the propulsion module is formed in the housing. The control module is respectively connected to the image acquisition module, the navigation module and the propulsion module. Compared with the prior art, the present invention has the advantages of compact structure, convenient use, safety and reliability, etc.

The invention provides an adjustable optical aiming auxiliary device for a geological compass, which comprises a fixed seat, a movable seat is movably mounted at the top of the fixed seat, the movable seat is hinged to the fixed seat through a fixed hinge, fixed rods are fixed at the top of the movable seat, a movable block is movably mounted between the fixed rods, and the movable block is hinged to the fixed seat through a fixed hinge. A movable plate is movably mounted at one end of the movable block, a fixing groove is formed in one end of the movable plate, a fixing block is rotatably mounted in the fixing groove, and a mounting plate is welded to one end of the fixing block. When the device is used, the movable plate moves through the fixed block, the mounting plate is rotated after the movable plate moves, the aiming mechanism is mounted in the mounting hole after the mounting plate is rotated, the aiming mechanism and the marking arrow are vertically distributed in the same circle center straight line, and long-distance measurement is achieved through the aiming mechanism; and the limiting columns are matched with the mounting holes to realize limiting and fixing between the movable seat and the fixed seat.

An electronic device includes: a sensor; at a memory storing instructions; and at least one processor operatively connected to the sensor, where, by executing the instructions, the at least one processor is configured to: obtain information about a first magnetic field of a virtual marker through the sensor; configure a reference distance, based on the information about the first magnetic field of the virtual marker; obtain information about a second magnetic field corresponding to a location of the electronic device, based on a specified detection time interval; and detect a Euclidean distance, based on the information about the first magnetic field of the virtual marker and the information about the second magnetic field corresponding to the location of the electronic device.

The utility model discloses a multifunctional geological compass for solid mineral exploration, which relates to the technical field of solid mineral exploration and comprises a compass main body, a compass positioning pointer is arranged at the top of the compass main body, a long sighting device is hinged to the front side of the top of the compass main body, and a multifunctional compass cover is rotatably mounted on the rear side of the top of the compass main body. The multifunctional compass cover comprises a first functional cover, a second functional cover and a third functional cover, and according to the multifunctional compass, the multifunctional compass cover is arranged on the compass main body, so that various requirements in solid mineral exploration are met. In the exploration process, exploration personnel can quickly switch and use different functional covers according to actual conditions without carrying a plurality of independent tools, so that the exploration efficiency is improved, and when compass equipment is not used, the whole multifunctional disc cover and the compass main body are closed, a rubber band necking opening of the elastic protection bag is pulled open and is turned downwards to cover the compass main body, so that the compass equipment is convenient to use. Therefore, the compass main body is not easy to open automatically and is convenient to store.

The invention discloses a miniaturized device of a high-precision unmanned aerial vehicle image transmission signal direction finding system. The miniaturized device comprises a detection direction finding antenna and a host, the detection direction-finding antenna comprises a low-frequency-band antenna unit, a high-frequency-band antenna unit, an antenna switching matrix, a radio frequency module and an electric compass; the low-frequency-band antenna unit and the high-frequency-band antenna unit are respectively connected with the antenna switching matrix, and the antenna switching matrix is connected with the radio frequency module; the host comprises a power supply module, an intermediate frequency acquisition board card and an embedded computer module; the intermediate frequency acquisition board card is connected with the embedded computer module and the power supply module; the detection direction-finding antenna is connected with the host through a control cable and an intermediate frequency cable. The direction-finding array adopts a directional antenna unit, so that the physical size of an antenna is smaller than an equivalent direction-finding aperture. Therefore, the constraint of the antenna aperture on the minimum size of equipment is broken, and the purpose of miniaturization is achieved.

This disclosure describes a method for calibrating a magnetic sensor of a client device. The method may include receiving a set of magnetic field measurements, each magnetic field measurement including the device position, the orientation of the client device, and the observed magnetic field vector measured by the magnetic sensor. The method may include calculating a device correction vector for the client device based on the set of magnetic field measurements. For each magnetic field measurement, the method includes determining the world magnetic field vector at the device position of the magnetic field measurement, calculating the expected measured magnetic field vector at the device position, accessing an estimated device correction vector for the client device, calculating the expected adjusted vector for the client device, comparing the observed magnetic field vector associated with the magnetic field measurement with the expected adjusted vector, and calculating a device correction vector based on the comparison.