492 results about "Reference device" patented technology

The invention provides a high-resolution small-angle measuring device based on laser frequency measurement, which comprises a laser generating device, a reflecting mirror group and a beat frequency measuring module, and is characterized in that a narrow-band interference sheet (3) and a transparent solid medium (4) are fixed on a high-precision horizontal rotating table (5); the fixing positions of the narrow-band interference sheet (3) and the transparent solid medium (4) are axially symmetric and are not parallel to each other by taking the diameter, perpendicular to the light path, of the rotating table as the axis; and when the high-precision horizontal rotating table (5) rotates to cause the frequency change delta f of the measured laser, the variable quantity of the beat frequency is equal to delta f. According to the small-angle measuring device, angle measurement is converted into frequency measurement by means of the high sensitivity of laser frequency to the rotation angle of the transparent solid medium, and the cavity mode frequency and the transmission frequency of the interference piece are synchronously changed by adding the interference piece; the problem that the tunable range of laser frequency is small due to rotation of a transparent solid medium is solved, and continuous measurement of micro angles is achieved.

A surgical robot a chassis includes a first surgical robotic arm and a reference device on a chassis. The first surgical robotic arm carries a surgical object, such as an implant, tool, or assembly, and the reference device carries indicia for identifying, sizing, calibrating, modeling, or verifying the surgical object. A controller kinematically positions the first surgical robotic arm to locate the implant, tool, or assembly in a predetermined orientation relative to the reference device in a surgical robotic coordinate space, and a camera is positioned to view the implant, tool, or assembly, when in proximity to the reference device.

The embodiment of the invention provides a server, a computer system and a multi-node management method, the server comprises a processor node and a connection node, the processor node comprises a plurality of processors and a first controller, and the connection node comprises a plurality of cable groups; the connection node is used for connecting reference equipment and providing multiple groups of data links for performing data transmission with the reference equipment for the multiple processors through the multiple cable groups; the first controller is used for establishing a corresponding relationship between the plurality of groups of data links and the plurality of cable groups; and in the process of data transmission between the plurality of processors and the reference equipment, detecting a target cable group with a fault from the plurality of cable groups according to the corresponding relationship and the fault state of each data link in the plurality of groups of data links. According to the method and the device, the problem that the efficiency of positioning the faulted cable group is low is solved, and the effect of improving the efficiency of positioning the faulted cable group is further achieved.

The invention provides a common-mode denoising dual-laser frequency measurement ultrahigh-precision small-angle measurement reference device, which comprises a first light path mechanism, a second light path mechanism and a beat frequency measurement module, the first light path mechanism and the second light path mechanism are arranged in parallel, and the light path mechanism comprises a laser generation device, a narrow-band interference sheet, a microprism array and a first annular piezoelectric module. And the components are fixed on a high-precision horizontal rotating table (7). According to the ultrahigh-precision small-angle measurement benchmark device for common-mode noise elimination double-laser frequency measurement, the cavity length is changed by rotating the cavity mirror to cause frequency change, the variable quantity of the angle is converted into the change of the frequency difference of laser output by the two devices, the narrow-band interference sheet is used for assisting adjustment to perform mode selection, the cavity mode change and interference frequency selection are highly synchronous, and the measurement accuracy is improved. According to the invention, mode hopping of the laser output frequency is avoided, continuous tunability of the output frequency along with the rotation angle is ensured, the problem of continuous measurement is solved, and small-angle ultra-high-precision measurement is realized.

A magnetic-based tracking system for tracking an ultrasound probe. The tracking system can create a three-dimensional visualization. The tracking system can include a reference device including a reference magnet and an ultrasound probe including an ultrasound acoustic transducer or acoustic array that acquires ultrasound images. The reference device can include a magnetometer that detects a magnetic field generated by the reference magnet. The ultrasound probe can couple a first ultrasound image with a first magnetic field strength, wherein both of the first ultrasound image is received and the first magnetic field strength is detected at a first time. The system can include a console including a processor and non-transitory computer-readable medium having stored thereon a plurality of processor executed logic modules that perform operations including receiving and recording a plurality of coupling of ultrasound images and detected magnetic field strengths to generate a 3D visualization from the ultrasound images.

Aspects presented herein may enable a UE to improve (e.g., reduce) the convergence time for vision-aided positioning by enabling the UE to use images embedded with location information. In one aspect, a UE receives, from a reference device, a server, or a map, a list of visual features and a location for each visual feature in the list of visual features. The UE identifies at least one visual feature in an area via at least one camera, where the at least one visual feature is included in the list of visual features, where the area is within a threshold distance of the UE. The UE estimates a position of the UE based on the identified at least one visual feature in the area and the location corresponding to the at least one visual feature.

The invention discloses a space-time adaptive power prediction system and method for distributed photovoltaic power generation in a mountainous area, and particularly relates to the technical field of fault prediction and health management. The method is used for solving the problem that the accuracy of power prediction and equipment health state evaluation is influenced by environment characteristic data reconstruction reference drift caused by equipment performance degradation in the prior art. A spatio-temporal data sequence is constructed by acquiring historical data of a photovoltaic unit, a spatio-temporal association network of generated power among equipment is constructed, performance stability of a reference equipment group is evaluated, and when the stability does not meet conditions, a performance attenuation spatio-temporal mode is analyzed to identify common features and personalized features. The propagation path of performance degradation on the space-time correlation network is analyzed based on the characteristics, a critical point is evaluated, reference correction is performed on the environment characteristic data by using the common characteristics and the critical point, and finally, the corrected environment characteristic data is used for executing power generation power prediction and equipment health state evaluation. Therefore, the prediction accuracy and the health management reliability are improved.

“THREE-DIMENSIONAL MONITORING SYSTEM FOR KINGPIN ON FIFTH WHEEL” describes an invention patent, for a monitoring system of Kingpin / Fifth Wheel articulation presented on trucks, with a great applicability for autonomous steering systems and vehicle dynamics control. This system allows the precise monitoring of translational, rotational movements and the relative accelerations of the king pin (5) in relation to the fifth wheel (3) on the X, Y and Z axes, totaling measurements in six degrees of freedom. The present patent presents two ways to make this monitoring of the three-dimensional position of the kingpin (5): The first through a set of sensors (6) accelerometers and gyroscope integrated to an electromagnet (4) that when electrified, is coupled to the king pin (5) by magnetic attraction. The second mode through a reference device (20) that is magnetic, identifiable, independent and easy to apply to the kingpin (4).

Methods and devices to monitor an analyte in body fluid are provided. Embodiments include continuous or discrete acquisition of analyte related data from a transcutaneously positioned in vivo analyte sensor automatically or upon request from a user. The in vivo analyte sensor is coupled to an electronics unit holding a memory with instruction to cause processing circuitry to initiate a predetermined time period that is longer than a predetermined life of the sensor, during the predetermined time period, convert signals from the sensor related to glucose to respective corresponding glucose levels, without relying on any post-manufacture independent analyte measurements from a reference device, and at the expiration of the predetermined time period, disable, deactivate, or cease use of one or more feature.

The invention discloses a method for determining a calibration scheme of a pressure sensor, and relates to the technical field of sensor equipment. Comprising the following steps: determining the working condition of the sensor, selecting adaptive reference equipment, setting a pressure loading point, constructing a dynamic pressure loading module, evaluating the performance of the sensor under a complex working condition through environmental simulation, carrying out an overload test aiming at an extreme condition, carrying out a long-time stability test, and constructing a non-calibration working condition verification model. And optimizing a calibration strategy by an intelligent algorithm to complete a pressure sensor calibration scheme. According to the method for determining the calibration scheme of the pressure sensor, static calibration, dynamic response test, environmental simulation and non-calibration working condition verification are systematically integrated by constructing a non-calibration working condition verification model and combining a multi-point pressure loading strategy, a dynamic pressure loading module and overload test. Meanwhile, an intelligent algorithm is introduced to optimize a calibration strategy, and multi-factor interaction under complex working conditions is compensated and corrected.

The in-vehicle device for receiving time synchronization information transmitted from each of a plurality of reference devices and transmitting the received time synchronization information to another device, includes: a communication unit configured to communicate with the other device; and an information processing unit configured to, if the communication unit receives a frame in which the time synchronization information is stored, store the time synchronization information in a specific queue with priority over other information, wherein the communication unit transmits the time synchronization information stored in the specific queue to the other device.

The present invention relates to a crane, in particular in the form of a rotating tower crane, having a crane jib, from which a hoist rope connected to a load handling means runs, a load position sensor system for sensing the position of the load handling means and / or of a load fastened thereto, a surroundings sensor system for collecting surroundings data to establish a surroundings model, and a crane controller for controlling hoist rope and / or crane movements on the basis of the sensed position of the load handling means and / or of the load fastened thereto and on the basis of the established surroundings model. According to the invention, the surroundings sensor system has an imaging sensor system for providing three-dimensional real-time surroundings data and a geo-referencing device for geo-referencing the 3D real-time surroundings data and establishing a geo-referenced 3D surroundings model.

The embodiment of the invention provides a server temperature regulation and control method and device, an expansion card and a storage medium, and relates to the field of hardware management.The server temperature regulation and control method comprises the steps that position information of reference equipment corresponding to a slot is determined according to position information of the slot of the expansion card, and the reference equipment is equipment connected with a server through the slot; the reference devices are in one-to-one correspondence with the slots; according to the voltage signal of the first chip of the expansion card, determining interface information of an equipment interface allocated to the slot of the expansion card, the interface information being used for indicating the equipment interface of the processor; and under the condition that the temperature information of the reference equipment connected with the equipment interface meets the preset condition, a target fan is determined according to the position information of the reference equipment, and the wind speed of the target fan is adjusted according to the temperature information of the reference equipment. By adopting the scheme, the technical problem that the server temperature regulation and control efficiency is relatively low in the related technology is solved.

The invention discloses an air quality sensor self-correction method and system based on time sequence analysis, and the method comprises the steps: continuously collecting measurement values during the normal operation of a sensor to form time sequence data, dividing the time sequence data into continuous time periods, and then calculating the statistical parameters of each time period; by dynamically comparing a current parameter with a historical parameter sequence, the significance change trend of statistical characteristics is intelligently identified, so that whether essential drift occurs or not is judged; and after the drift is confirmed, inquiring a preset correction table according to the trend amplitude and direction to obtain a correction coefficient, and finally adjusting the gain or bias voltage of a sensor output circuit through a digital-to-analog converter to realize autonomous closed-loop correction. According to the method, analysis is carried out only by utilizing historical data of the sensor, external reference equipment or complex model training is not needed, online self-correction which is efficient, low in cost and high in real-time performance is achieved, and the long-term reliability and stability of air quality monitoring data are remarkably improved.

The invention provides a small-angle measuring reference device based on interference frequency selection and microprism array feedback, which comprises a laser generating device and a beat frequency measuring module, and is characterized in that a narrow-band interference sheet (4), a microprism array (5) and a piezoelectric module (6) are fixed on a high-precision horizontal rotating table (7) in parallel; the rear surface of the microprism array (5) is bonded with the front surface of the piezoelectric module (6), and the center of the rear surface of the piezoelectric module (6) is located at the axis position of the rotating table. And when the frequency of the measured laser is changed by delta f, the variable quantity of the beat frequency is equal to delta f. By means of ultrahigh sensitivity of laser frequency to cavity length, the cavity length is changed by rotating the cavity mirror to cause frequency change, then angle measurement is converted into frequency measurement, mode selection is carried out through auxiliary adjustment of the narrow-band interference sheet, cavity mode change and interference frequency selection are highly synchronous, and mode hopping of laser output frequency is avoided. The continuous tunability of the output frequency along with the rotation angle is ensured, and small-angle ultrahigh-precision measurement is realized.

In a method of determining position information of a client device, reference devices include a master device and target devices. Target device clocks are synchronized with the master device clock based on one-way message information. For each of the target devices a first time correction is determined based on a two-way ranging message. A first message transmitted from / to the respective target device is timestamped by several target devices corrected for the first time correction. Position information of the client device is determined based on time-of-flight information of the first messages in which the first timestamp is corrected for the first time correction. As a result, the timestamps of the first messages applied by the target devices will experience a same offset error. Consequently, the corresponding pseudo-ranges will all have the same error. Typically, positioning algorithms are insensitive to constant errors in the pseudo-ranges or can easily deal with them.

【Solution means】The proxy device includes a request determination unit 105 that receives a request sent from a virtual browser and determines the security risk of the request URL specified in the request, and a request transfer unit 101 that transfers a request determined to be normal by the request determination unit 105 to a server 30 that operates the site to be analyzed, where the site to be analyzed is a target site where the service used on the site to be analyzed is specified, a response analysis unit 102 that receives and analyzes a response from the server 30, and a response return unit 103 that returns the response to the virtual browser. According to this, it is possible to prevent the analysis device 10 from receiving a response having a security risk.

The invention relates to the technical field of communication interaction, in particular to an angle measurement method and device and a storage medium. The angle measurement method applied to first reference equipment comprises the following steps: receiving a plurality of measurement signals sent by target equipment; respectively determining a first phase measurement value of each received measurement signal; receiving a plurality of second phase measurement values sent by a second reference device; based on the plurality of first phase measurement values and the plurality of second phase measurement values, determining distance difference values between the target equipment and the first reference equipment and between the target equipment and the second reference equipment; and determining deflection angles between the target equipment and the first reference equipment and between the target equipment and the second reference equipment based on the baseline length and the distance difference between the first reference equipment and the second reference equipment. According to the invention, the air interface occupation time of signal transmission can be reduced, the test time delay can be shortened, the requirement on the measurement precision can be effectively reduced, and the process of determining the angle information of the target equipment is more convenient and efficient.

The invention provides a DFT resource configuration prediction method and device, electronic equipment and a storage medium, and belongs to the technical field of electronic design automation, and the method comprises the steps: determining a reference device density based on a process node of a target chip; determining an effective digital logic layout area based on the chip planning area of the target chip and the estimated non-digital logic function region; according to a utilization rate factor corresponding to the physical design constraint of the target chip, correcting the effective digital logic layout area to obtain an available standard cell layout capacity; according to the standard unit layout capacity and the reference device density, generating a time sequence element number prediction interval of the target chip through a logic depth mapping model; and according to the time sequence element number prediction interval, generating testability design DFT architecture configuration parameters of the target chip. The number of chip registers can be quickly and accurately predicted and the DFT architecture configuration parameters can be generated in the early stage of chip design.

The utility model relates to the technical field of gauge positioning, and discloses a vehicle body assembly gauge positioning reference device which comprises a placing frame, a hydraulic cylinder is installed on the inner wall of the top end of the placing frame, a plurality of connecting blocks are connected to the inner wall of the bottom end of the placing frame in a sliding mode, the driving end of the hydraulic cylinder is fixedly connected to the outer portion of one connecting block, and the driving end of the hydraulic cylinder is fixedly connected to the outer portion of the other connecting block. Connecting shafts are rotatably connected to the bottoms of the connecting blocks, rotating plates are rotatably connected to the bottoms of the multiple connecting shafts, connecting rods are fixedly connected to the tops of the connecting blocks, telescopic assemblies are arranged at the tops of the connecting rods, connecting frames are fixedly connected to the rear sides of the tops of the placing frames, and adjusting assemblies are arranged at the bottoms of the connecting frames. According to the utility model, adjustment can be carried out according to the vehicle body shell, the adaptability is high, and the angle of the detection instrument can be adjusted by changing the rotation of the adjusting frame I and the adjusting frame II, so that the vehicle body can be comprehensively detected.

A UE positioning method includes: receiving, from first and second reference devices, first and second reference device measurements of first and second reference signals from first and second signal sources; receiving, at the UE, the first and second reference signals; determining first and second UE measurements of the first and second reference signals; determining a first position of the UE based on the first UE measurement of the first reference signal and the first reference device measurement of the first reference signal; determining a second position of the UE based on the second UE measurement of the second reference signal and the second reference device measurement of the second reference signal; and determining a third position of the UE based on the first position of the UE and the second position of the UE.

The invention belongs to the related technical field of fault diagnosis, and discloses a fault diagnosis sample generation method, application and equipment based on a physical constraint adaptive migration network, and the method comprises the steps: (1) converting original vibration signals of reference equipment and monitoring equipment into a time sequence spectrogram through continuous wavelet transform; (2) processing the time sequence spectrogram by adopting a spectrum feature encoder of the physical constraint adaptive migration network to extract multi-scale spectrum features; wherein a loss function of the physical constraint adaptive migration network comprises content loss, style loss and frequency band energy loss; (3) processing the multi-scale spectrum features by adopting the adaptive style normalization module so as to fuse the fault content features of the reference equipment and the machine style features of the monitoring equipment; and (4) processing the fused features by adopting a feature reconstruction decoder so as to reconstruct and generate a synthetic sample. According to the invention, the problem of insufficient data authenticity and physical consistency is solved.

The invention belongs to the technical field of camera time synchronization, and discloses a camera time synchronization method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining relative time or absolute time in a time reference device in real time, converting the relative time or absolute time into corresponding coding information through a time coding rule, and transmitting the coding information to a server; the controller is used for adjusting the light source array to obtain light source array information after real-time adjustment, controlling the camera to shoot, enabling the camera to shoot a shot picture recording the light source array information after real-time adjustment, and decoding the light source array information after real-time adjustment by using a time decoding rule to obtain a shot picture recording shooting time; the light source array is adjusted through the relative time or the absolute time, and the light source array information after real-time adjustment is decoded to obtain the shot picture recording the shooting time, so that time synchronization is performed on the camera, and the time synchronization efficiency of the camera is improved.

The invention relates to a location fingerprint database management method, a computer device, a storage medium and a program product, and the method comprises the steps: obtaining the signal intensity feature data of a digital key at each sampling point in a sampling region when determining that a reference device and the digital key associated with a vehicle are carried by the same object; and determining target position information of each sampling point according to signal information of a first positioning signal transmitted by the reference device at each sampling point and received by a first signal receiver on the vehicle and signal information of a second positioning signal transmitted by the reference device at each sampling point and received by a second signal receiver on the vehicle, and managing the position fingerprint database of the digital key according to the signal intensity characteristic data of each sampling point and the target position information. On one hand, the determined target position information is more accurate, so that the vehicle positioning is more accurate; and on the other hand, the vehicle control based on the digital key does not depend on the positioning precision of the digital key any more, and the vehicle control precision is improved.

The invention relates to the field of terminal control, in particular to an angle measurement method and device and a storage medium. The angle measurement method provided by the invention is applied to first reference equipment, and comprises the following steps: based on communication connection between target equipment and second reference equipment, determining a plurality of phase measurement values of signal interaction between the target equipment and each reference equipment under a plurality of signal frequencies; based on the plurality of phase measurement values, respectively determining a signal phase change estimation value corresponding to each signal frequency, and obtaining a plurality of signal phase change estimation values; determining a distance difference between the target device and the two reference devices based on the plurality of signal phase change estimated values; and determining deflection angles between the target equipment and the two pieces of reference equipment based on the baseline length and the distance difference between the two pieces of reference equipment. The purpose of high-precision angle measurement can be achieved under the condition that other measurement sensors do not need to be added.

The invention relates to the technical field of data processing, in particular to an industrial electromagnetic environment multi-dimensional health degree assessment model, which comprises a processor and a memory, and the processor executes a computer program of the memory to implement the following steps: acquiring a multi-dimensional electromagnetic environment data sequence of any equipment in an industrial electromagnetic environment in a current time period, if the abnormal fluctuation time period exists in the current time period, obtaining the abnormal performance degree of each abnormal fluctuation time period according to the data difference of each abnormal fluctuation time period; according to the data fluctuation characteristics of the multi-dimensional electromagnetic environment data sequence and the change trend of the multi-dimensional electromagnetic environment data of each reference device, the interference degree of any device in each abnormal fluctuation time period is obtained; according to the abnormal performance degree of each abnormal fluctuation time period and the interfered degree of any device, the affected degree of any device is obtained, the health degree of the industrial electromagnetic environment is obtained by using the affected degree of each device, and the accuracy of a health degree evaluation result is improved.

A communication apparatus and information sending method, the method including obtaining, by a first device, first information, where the first information comprises phase information obtained by a reference device by measuring a reference signal, and the first information is associated with positioning, and sending, by the first device, the first information to a positioning terminal device.

Techniques describe a network management system comprising a memory and processing circuitry configured to obtain distance measurements between at least two devices at a site, wherein the at least two devices comprise at least one reference device positioned at a known location and a target device relative to the at least one reference device positioned at an unknown location. The processing circuitry may further be configured to obtain directional information specifying a direction of one or more signals communicated between the at least one reference device and the target device. The processing circuitry may further be configured to determine, based on the distance measurements and the directional information, a plurality of possible positions of the target device relative to the at least one reference device. The processing circuitry may further be configured to determine, based on the directional information, a candidate position from the plurality of possible positions.

The invention provides a smart home control method and device based on a large language model and electronic equipment, and relates to the technical field of artificial intelligence, in particular to the technical fields of deep learning, large language models, natural language processing, smart home control and the like. According to the specific implementation scheme, after a home operation instruction is obtained, a reference home operation instruction matched with the home operation instruction and a corresponding reference equipment control element are determined, and a target equipment control element of the home operation instruction is determined by using a first large language model according to the reference home operation instruction and the reference equipment control element; and performing smart home control according to the target equipment control element. Therefore, through the first large language model, the target equipment control element of the home operation instruction can be accurately determined, so that intelligent home control is accurately realized based on the determined target equipment control element.

The present invention supplies a reference frequency to time reference devices (ePRTC) in remote locations via an optical network 30, said reference frequency being necessary in order to satisfy a holdover standard. There is no need to prepare a plurality of reference frequency-generating high-accuracy frequency reference devices or the like for each location of the time reference devices. In a transmission-side node N1, an optical frequency comb 12 is used to generate an optical signal SG2 in which deterioration of frequency accuracy has been suppressed by synchronizing with a reference frequency signal SG1 and which has been converted to a communication wavelength band, and the optical signal SG2 is sent to the optical network 30 via an optical frequency repeater 13. In a reception-side node N2, an optical signal SG4 received from the optical network 30 is inputted to an optical frequency comb 17 via an optical frequency repeater 16, and a frequency signal that has been synchronized with the received signal is generated. A time reference device 18 uses the frequency of a signal SG6 outputted by the optical frequency comb 17 to achieve time holdover at an accuracy that is within the standard. The optical frequency repeaters 13, 16 eliminate the influence of fiber noise.