262results 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.

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.

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 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 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 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.

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.

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.

The present 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 of which includes a device location, an orientation of the client device, and an observed magnetic field vector measured by the magnetic sensor. The method may include computing 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 a world magnetic field vector at the device location of the magnetic field measurement, computing an expected measured magnetic field vector at the device location, accessing an estimated device correction vector for the client device, computing an expected adjusted vector for the client device, comparing the observed magnetic field vector associated with the magnetic field measurement and the expected adjusted vector, and computing the device correction vector based on the comparison.

The application discloses a kind of magnetic compass's calibration device and method, the device includes cylindrical rotating table, azimuth circle and azimuth marker post assembly, the cylindrical rotating table is used to fix the compass bowl of magnetic compass at its rotation center, the azimuth circle is coaxially fixed on the upper surface of the compass bowl, and the azimuth marker post assembly is axially arranged on the peripheral circumference concentric with the cylindrical rotating table;The cylindrical rotating table is suitable for rotating to drive the compass bowl and the azimuth circle to rotate synchronously, and the pointing accuracy of the magnetic compass is calibrated by aligning the azimuth circle to the azimuth marker post assembly.The application adopts multi-azimuth calibration method, which can greatly improve the installation accuracy of the scale disc and the pointing magnet, thereby improving the pointing accuracy of the magnetic compass.

An electronic device [100] generates a summary map [265] of a scene based on data representative of objects having a high utility [245] for identifying the scene when estimating a current pose [275] of the electronic device and localizes the estimated current pose with respect to the summary map. The electronic device identifies scenes based on groups of objects [215] appearing together in consistent configurations over time, and identifies utility weights for objects appearing in scenes, wherein the utility weights indicate a predicted likelihood that the corresponding object will be persistently identifiable by the electronic device in the environment over time and are based at least in part on verification by one or more mobile devices. The electronic device generates a summary map of each scene based on data representative of objects having utility weights above a threshold.

The invention provides a magnetic azimuth angle measurement method and device, electronic equipment and a storage medium, and relates to the technical field of measurement. The method comprises the following steps: for each magnetometer in a plurality of magnetometers, acquiring magnetic field intensity data of each sample point in a current environment based on the magnetometer so as to calibrate the magnetometer, and calculating a fluctuation value of the magnetic field intensity data corresponding to the magnetometer; wherein the fluctuation value is used for representing the dispersion degree of the magnetic field intensity data among the sample points; according to the fluctuation value corresponding to each magnetometer in the plurality of magnetometers, determining a target magnetometer in the plurality of magnetometers; and measuring a magnetic azimuth angle of the electronic equipment based on the target magnetometer. According to the embodiment of the invention, the magnetic field interference degree of the magnetometers can be measured through the fluctuation value, and the magnetometer with the minimum magnetic field interference is selected from the plurality of magnetometers as the target magnetometer, so that the magnetic azimuth angle of the electronic equipment can be measured, and the measurement accuracy of the magnetic azimuth angle is improved.

This utility model discloses a multifunctional outdoor device, including a housing, a radiation detection device, a power supply device, and a circuit board installed on the front side inside the housing. The circuit board integrates a main control chip. The power supply device includes a solar panel, a hand-cranked generator assembly, and a battery assembly installed inside the housing. The radiation detection device includes a cover tube installed inside the housing and a cover tube detection plate located behind the cover tube. The solar panel includes a solar panel installed on the upper side of the housing and a charging control circuit integrated on the circuit board. The hand-cranked generator assembly includes a rotating component rotatably installed on the rear side of the housing, an operating handle connected to the rotating component, and a hand-cranked generator installed inside the housing. The rotation input part of the hand-cranked generator is installed on the rotating component. The battery assembly includes a lithium battery pack, a battery controller, and a charging / discharging interface. Thus, this utility model offers multiple functions and reduces the user's carrying burden.

Display assemblies with monitoring features, along with related systems and methods, are disclosed. The display assembly includes a display unit having an electronic display movably mounted to a frame. A controller includes an orientation detection device in connection with a processor. The controller receives data from the orientation detection device and determines, from time to time, a state of the display assembly based, at least in part, on data received from the orientation detection device.

The utility model discloses an anti-vibration electronic compass structure, which comprises an electronic compass main body and four groups of damping components respectively arranged at four corners of the electronic compass main body, mounting holes are arranged at the four corners of the electronic compass main body, and each group of damping component comprises an outer sleeve arranged in the corresponding mounting hole. A mounting sleeve is coaxially arranged in the outer sleeve, the outer wall of the mounting sleeve is connected with the inner wall of the outer sleeve through a plurality of transverse elastic pieces, the two ends of the mounting sleeve are connected with the electronic compass main body through longitudinal elastic pieces respectively, and transverse vibration and longitudinal vibration of equipment during working can be absorbed through the transverse elastic pieces and the longitudinal elastic pieces; the vibration reduction effect is good, parts on the electronic compass main body are prevented from being damaged due to vibration, and the service life of the electronic compass is prolonged.

The utility model discloses a drawing model ruler for mountain geology surveying and mapping engineering, which belongs to the technical field of surveying and mapping engineering equipment and comprises a folding model ruler and a ruler shell, one end of the folding model ruler is provided with a disc-shaped front clamping plate and a disc-shaped rear clamping plate, and a plurality of ruler strips are connected between the front clamping plate and the rear clamping plate through a rotating part of a rotating bearing seat. The non-rotating part of the rotating bearing seat is embedded and mounted on the surfaces of the front clamping plate and the rear clamping plate, the ruler strips comprise ruler strips with legends of different shapes machined on the surfaces and measuring ruler strips, and a compass and a liquid level gauge are embedded and mounted on the surfaces of the measuring ruler strips. A semicircular angle ruler is fixedly welded to the upper end of the front side face of the front clamping plate, a finger lifting notch is formed in the inner side of the semicircular angle ruler, and reset magnetic attraction strips are embedded into the outer ends of the surfaces of the ruler strips. The drawing model ruler is of a folding structure, small in size, convenient to carry outdoors, good in durability, long in service life and good in economic benefit.

The invention discloses a magnetic compass calibration method and related equipment, and relates to the technical field of unmanned aerial vehicle navigation, and the method comprises the following steps: responding to a magnetic compass calibration instruction, determining a calibration parameter to be collected, determining an attitude parameter corresponding to the collected calibration parameter, sending the attitude parameter to a three-axis turntable, receiving an attitude adjustment completion instruction sent by the three-axis turntable based on attitude adjustment completion, sending a parameter reading instruction to the unmanned aerial vehicle end based on the attitude adjustment completion instruction, receiving a calibration parameter sent by the unmanned aerial vehicle based on the parameter reading instruction, and performing magnetic compass calibration based on the calibration parameter. According to the application, the upper computer end is respectively communicated with the three-axis turntable and the unmanned aerial vehicle, and the instruction for adjusting the attitude of the three-axis turntable is automatically generated according to the requirement of data acquisition, so that the attitude of the unmanned aerial vehicle is automatically adjusted, and the calibration efficiency of the magnetic compass is improved.

This disclosure generally relates to user interfaces for compass applications. An electronic device displays a compass user interface having a direction indicator and a bearing indicator. The direction indicator provides an indication of a respective compass direction, where an appearance of the direction indicator is determined based on an orientation of the electronic device relative to the respective compass direction. The bearing indicator provides an indication of an offset from the respective compass direction. While displaying the bearing indicator, the electronic device detects a rotation of a rotatable input mechanism, and in response, changes a display position of the bearing indicator from a first position to a second position, the amount of change determined according to a magnitude of the rotation of the rotatable input mechanism.

The utility model discloses multifunctional forest compass equipment, which relates to the technical field of compasses and comprises a compass main body, a compass cover is rotatably connected onto the compass main body in a damping manner, a fixing groove is formed in the middle of the top surface of the compass cover, a photovoltaic panel is embedded in the fixing groove, and a storage battery is arranged in the compass cover. The photovoltaic panel can convert solar energy into electric energy to be stored in the storage battery, an illumination groove is formed in the compass body, a plurality of LED illumination lamps are evenly distributed along the inner wall of the illumination groove, the storage battery can provide power for the LED illumination lamps, a protection assembly is further arranged on the top face of the compass cover, and the compass cover is rotated by a certain angle and kept. When the compass is used at night, the LED illuminating lamp is turned on through the control switch, so that the LED illuminating lamp illuminates the dial plate of the compass main body, and by utilizing the structure, an emergency power supply can be obtained by solar power generation in emergency, so that the functionality and the practicability of the compass are improved.

The utility model belongs to the technical field of calibration, and discloses a calibration device for a magnetic compass, which comprises a calibration mechanism comprising a rotating platform for driving the magnetic compass to rotate horizontally, a magnet assembly, and four groups of upright guide rails which are respectively positioned on the periphery of the rotating platform, a magnet block capable of sliding along the vertical direction of the vertical guide rail is arranged on the vertical guide rail; compared with the prior art, the magnetic compass has the following beneficial effects that through the design of the magnet assembly, when the magnetic compass rotates on the rotating platform, the height is adjusted by enabling the peripheral magnet blocks to slide up and down along the vertical guide rail, so that the height of the magnetic compass can be adjusted according to the autodyne condition when the magnetic compass rotates to different directions on the rotating platform; and the magnetic field action intensity between the magnet block and the magnetic compass is adjusted. Therefore, the autodyne of the magnetic compass can be corrected in a targeted manner, the calibration precision is improved, the operation of the sliding adjustment mode is more convenient, the time and labor cost required by calibration are reduced, and the working efficiency is improved.

A tracking system and method are provided. A movable element of the tracking system performs a motion process on a movable path. A tracking device of the tracking system calculates a signal change at each of time points corresponding to the motion process based on first sensing signals and second sensing signals. The tracking device generates a variable extrinsic calibration parameter of a target device and the movable element corresponding to each of the time points based on the signal changes and the fixed motion relationship. The tracking device performs a tracking operation corresponding to the target device based on the variable extrinsic calibration parameters.