443results about How to "Improve data accuracy" patented technology

A system and method is provided for tracking and maintaining a highly accurate inventory of shipping containers that are stored within container storage facilities. The invention includes using multiple complementary real-time and post-processing positioning techniques associated with various positioning sensors that are associated with inventory pieces or equipment. Examples of such positioning techniques are DGPS, GPS with RTK, DGPS loosely-coupled with INS, DGPS tightly-coupled with INS, and DGPS deeply-coupled with INS. Data correction and fusion techniques are applied to these positioning stages to re-compute a calibrated position with an improved accuracy. An additional trajectory can be iteratively determined using the fusing technique until the position data becomes statistically trustworthy. Further, combinations of multiple real-time positioning techniques combined with past position error correction algorithms provide a high accuracy needed for inventory tracking.

Provided is a wireless communication system easily establishing a connection path in a sensor network collecting data from a number of sensor nodes. The wireless communication system comprises a base station communicating by a first wireless communication system, plural first nodes communicating by the first wireless communication system and a second wireless communication system, and plural second nodes communicating by the second wireless communication system. The first node transmits the number of hops in the first wireless communication system to the second node. The second node obtains a reception condition of at least one of a signal transmitted by the first node and a signal transmitted by the second node, and selects a upper stage node to connect based on the number of hops in the first wireless communication system, the number of hops in the second wireless communication system, and the obtained reception condition information.

The invention discloses a multifunctional intelligent mattress system. The multifunctional intelligent mattress system comprises a sleep quality monitoring system, an environment monitoring system and an intelligent mobile terminal. The sleep quality monitoring system comprises a breathing frequency sensor, a heart rate detection sensor and a pressure sensor. The environment monitoring system comprises a temperature sensor, a humidity sensor and a brightness sensor. The intelligent mobile terminal is connected to the sleep quality monitoring system and the environment monitoring system in a data connection way. Information monitored through the sleep quality monitoring system and the environment monitoring system is transmitted to the intelligent mobile terminal and is displayed through a display screen and a corresponding visual sleep quality report is generated. The mattress body of the multifunctional intelligent mattress system comprises one or more of magnet cotton, far-infrared cotton and negative ion cotton so that health care functions are effectively improved. Though cooperation of the health care functions, the sleep quality monitoring system, the environment monitoring system and the intelligent mobile terminal, the health effects are shown to a user in data and chart ways.

A distributed control system has a plurality of distributed field devices, each of which contains a transducer and a wireless transceiver. The distributed control system includes a base station transceiver, a database and a virtual transmitter application in communication with the database. Each field device transmits and receives data via wireless signals between the communications boards and the base station. The data is stored in the database for later retrieval and evaluation by the virtual transmitter application. The deployed field device senses information and transmits the sensed information wirelessly to a base station. The sensed information is stored in memory on a computer system, and programmatically groomed to provide a measurement value, upon request by a user.

The invention discloses a management method for the warehousing-in and the warehousing-out of an electric power security instrument. The management method comprises the following steps of: reading RFID (radio frequency identification devices) tag information on the electric power security instrument by using a high-frequency RFID reader-writer by virtue of an RFID technology, and positioning and tracking the RFID tag information; judging the warehousing-in and warehousing-out of the instrument by combining with the movement direction of the RFID electronic tag of the security instrument, wherein the management information of the instrument can be updated in real time. The management method has the advantages of being wide in application range, convenient to operate, high in safety and reliability, high in data accuracy, and the like.

The invention provides a file management method, a device and an electronic device used for urban security monitoring, which relate to the technical field of data management. The file management method used for urban security monitoring comprises the following steps: face recognition being performed on a plurality of human face images to obtain a plurality of feature vectors; calculating vector distances between the plurality of eigenvectors; determining similarity between the plurality of human face images according to the vector distance; merging and clustering the plurality of human face images according to the similarity to obtain a merging and clustering result; a plurality of personal files being established according to the merged clustering results. The technical problem that the data accuracy of the personal files in the prior art is low, thereby affecting the urban security monitoring work is solved.

The invention relates to a power line carrier and two-way power frequency communication mixing networking method which comprises the following steps of: installing a carrier power frequency concentrator on a power line at the low-voltage side of a distribution room transformer, and installing a carrier power frequency collector at a low-voltage resident watt-hour meter; and adding a power frequency channel in a downlink communication module of the carrier power frequency concentrator, and adding a power frequency channel in an uplink communication module of the carrier power frequency collector. By utilizing the characteristics of distant transmission distance, high communication reliability and low cost of the two-way power frequency communication and through the mixing networking application with the power line carrier communication, the invention solves the island problem of the power line carrier communication. The arrangement of the carrier power frequency concentrator and the carrier power frequency collector realizes the two-channel communication of the downlink communication of a low-voltage resident electricity information collection system, greatly improves the copying coverage rate and data accuracy, and provides guarantee for full acquisition, full coverage and full prepayment building aims of an electricity information acquisition and management system.

Disclosed are methods, systems, and computer-product programs for increasing accuracy in cone-beam computed tomography.

The invention discloses a horizontal foundation pit supporting system. The horizontal foundation pit supporting system comprises supporting rods and further comprises axial force monitoring and compensating devices, a hydraulic system and a control system. The axial force monitoring and compensating devices are arranged at the top ends of the supporting rods. Sensors are arranged at the corresponding positions of the axial force monitoring and compensating devices. The sensors are connected with the control system through signal lines. The hydraulic system is connected with the control system and the axial force monitoring and compensating devices. The horizontal foundation pit supporting system is wide in data collection point distribution, capable of collecting data in real time and is high in accuracy, and remote monitoring of the horizontal foundation pit supporting system is achieved.

Methods and devices for correcting underwater photon displacement and for depth sounding with a single-photon Lidar are provided. The method includes: acquiring a pointing angle of a photon emitted by the single-photon Lidar, and coordinates of a water-surface photon signal and a water-bottom photon signal returned by the photon emitted by the single-photon Lidar; performing a sea wave fitting according to the water-surface photon signal to determine a sea wave model; determining an intersection of the photon and an air-water interface according to coordinates of any water-bottom photon, the pointing angle and the sea wave model; determining an underwater displacement error of the photon according to the intersection, the sea wave model and the pointing angle; and correcting the coordinates of the water-bottom photon according to the underwater displacement error. The invention performs sea wave modeling through water surface photon signal and determines intersection of the photon and water-air interface.

An apparatus comprising a first antenna, a second antenna, a processor and a memory. The first antenna may be configured to connect to a GPS satellite. The second antenna may be configured to connect to the GPS satellite. The first antenna is positioned separately from the second antenna. The processor may be configured to execute instructions. The memory may be configured to store the instructions that, when executed, perform the steps of (i) calculating a first value measured through a connection between the first antenna and the GPS satellite, (ii) calculating a second value measured through a connection between the second antenna and the GPS satellite, and (iii) determining a correction value to compensate for local conditions by analyzing differences between the first value and the second value.

The invention relates to a method and system for on-line calculation of an electrical core capacity and a state of health (SOH), and an electric vehicle. The method comprises: a datum curve is established according to a charging/discharging situation of a new electric core; a correspondence relationship of translation values between charging/discharging curves of electric cores with different capacities and datum curves and electric core capacities is established, wherein the positive material types of the electric cores with different capacities and the new electric cores are identical; a translation value between a charging/discharging curve of an electric core with the capacity needing to be measured and the datum curve is obtained, and the electric core capacity corresponding to the translation value is calculated according to the correspondence relationship of the translation value and the electric core capacity. According to the method, translation of a practically measured charging or discharging curve is realized and a relationship between the translation value and the capacity is established; and on the basis of the correspondence relationship between the capacity and the translation value, the electric core capacity and the SOH are calculated. The method has advantages of data accuracy, simple operation, online computing realization, simpleness in realization, and small error.

A method and system is provided for obtaining data indicative of at least one characteristic of a continuous medium or at least one localized target located within a predetermined volume of space. The system includes a sensor configuration and a processing circuit. The sensor configuration includes a plurality of sensors for acquiring a plurality of signals from the continuous medium or the target(s). The plurality of sensors have centers spatially separated from each other in at least one spatial dimension. The processing circuit is configured for obtaining data indicative of the characteristic or characteristics of the medium or the target by calculating a plurality of powered weighted increments using the plurality of signals acquired by the sensor configuration and by using a plurality of models for relating the plurality of powered weighted increments to the characteristic or characteristics of the medium or the target. The selected characteristics of the medium or the target can be estimated with better accuracy and temporal and/or spatial resolution than is possible with prior art correlation function, spectra, and structure function-based methods and systems. In contrast to prior art methods and systems, the invention is not sensitive to signal contaminants with large temporal scale such as ground and sea clutter, and is not sensitive to low frequency external interference. The invention is capable of estimating various characteristics of the medium or target, for example, size, shape, visibility, speed, direction of the motion, and rates of changes of the above characteristics.

An apparatus is disclosed for providing data into a template document, the template document having a number of portions for completion by a user. The apparatus comprises: a verbal input device (72) arranged to receive and record a verbal passage, the verbal passage including information for a specific one of the portions of the template document; and a handwriting input device (70) arranged to decode handwritten information corresponding to the verbal passage, the handwritten information including identification of the specific portion of the template document. The apparatus also includes a data processing and storage device (78,82) arranged to: associate the verbal passage with the handwritten information based on the timings of the verbal passage and the handwritten information; determine from the verbal passage and the handwritten information the data to be provided into the specific portion of the template document; and associate the data with the specific portion of the template document.

The present invention discloses a three-dimensional wind field measurement system applicable to an unmanned aerial vehicle and a use method of the three-dimensional wind field measurement system. The three-dimensional wind field measurement system comprises a data acquisition device and a control system; the data acquisition device comprises a plurality of wind speed measuring devices and a wind speed acquisition support; each wind speed measuring device includes wind speed sensors and a wind speed sensor fixing mechanism; the wind speed acquisition support includes a base main body, upright columns and a top cover; the base main body includes an upper-layer base and a lower-layer base; the top surface of the upper-layer base is provided with the plurality of upright columns which are distributed circumferentially; the upright columns are provided with the wind speed measuring devices; the lower-layer base is provided with a rotation driving device for driving the upper-layer base to rotate; and the top surface of the upper-layer base and the bottom surface of the top cover are both provided with the wind speed measuring devices. With the three-dimensional wind field measurement system of the invention adopted, the measurement of a three-dimensional space wind field at a specific area around the unmanned aerial vehicle can be realized. The three-dimensional wind field measurement system has the advantages of simple structure, convenient operation, easiness in arrangement and high applicability.

The invention provides a method for measuring organic matter in soil, which uses a sand bath instead of an oil bath for heating, so that the measurement process is safer; experimental steps are simplified, work efficiency is improved, and experimental consumption costs are reduced. The method for measuring organic matter in soil provided by the invention has a relative standard deviation of 2.86%, and better data reliability and accuracy; the relative standard deviation of the existing method is 3.56%. The invention provides a method for measuring organic matter in soil, and the measuring accuracy is improved by 19.94%.

Various techniques are described which may be used to facilitate and improve seismic exploration activities. For example, one aspect of the present invention is directed to a technique for enabling in-situ measurement of geophone response parameters. Another aspect of the present invention is directed to a technique for improving geophone calibration and for improving the accuracy of measurement of geophone response parameters. Yet another aspect of the present invention is directed to a technique for compensating geophone response output data in order to improve the accuracy of such data.