413 results about "Wireless measurement" patented technology

The invention discloses a wireless measurement while drilling system and method. The system comprises an underground instrument and a ground system. The underground instrument comprises an electromagnetic wave measurement while drilling device used for carrying out measurement while drilling through electromagnetic waves, a drilling fluid pressure pulse measurement while drilling device used for carrying out measurement while drilling through drilling fluid pressure, and a transmitting and receiving machine connected to the electromagnetic wave measurement while drilling device and the drilling fluid pressure pulse measurement while drilling device and used for controlling switching of the work modes of the underground instrument according to signals from the ground system. The work modes comprise an electromagnetic wave transmission mode and a drilling fluid pressure pulse mode. The ground system is compatible with demodulating and decoding of the two work modes and is used for carrying out digital signal processing on the signals generated under the electromagnetic wave transmission mode and / or the drilling fluid pressure pulse mode. According to the system, well logging combination of different transmission modes is achieved, and underground working of the two modes can be selected at the same time or underground working of one mode can be selected according to needs. The system is flexible, compatible and high in applicability.

A method and apparatus for wireless measurement of the temperature in curing concrete is characterized by the use of a plurality of surface acoustic wave temperature sensors embedded in the concrete. An interrogation signal from an external transceiver system is modified by the sensors in accordance with the temperature of the concrete adjacent to the sensors. The return signals from the sensors are processed in a correlation device to identify each signal as originating from a specific sensor. A microprocessor calculates the maturity of the concrete based on the data received from the sensors as well as data input corresponding to the type of concrete. The maturity data is used to analyze the strength and integrity of the concrete structure being built.

A method of changing the serving cell in a cellular communications network is provided. A radio communications link is established between a serving network node of a serving cell and a mobile terminal. The mobile terminal sends radio measurement reports for cells other than the serving cell. Once a predetermined condition has been fulfilled, a pre-configuration is performed to establish a radio communications link for one or more cells being a candidate for a new serving cell.

The invention relates to a signal transmitting device for realizing wireless measurement while drilling. A downhole signal transmitting device for an electromagnetic measurement while drilling system comprises an upper drilling string and a lower drilling string, and an insulating joint is contained between the upper drilling string and the lower drilling string; and the upper drilling string and the lower drilling string are used for forming an asymmetric dipole antenna. The transmitting device adopts software radio technology to realize various functions of wireless transmission; the impedance matching between a transmitter antenna and transmission medium is realized through an impedance converter; and the dipole antenna is adopted to transmit a measurement while drilling data signal. The device and the method improve the adaptive capacity and measurement depth of the electromagnetic measurement while drilling system to different strata.

The invention discloses a method and a system for wireless concentrated collection and management of energy measurement data. The system comprises wireless measurement instruments, collectors, a concentrator, wireless GPRS communication modules, and a system management center. The system is characterized in that: the system adopts a quantification method, a timing method, a multi-channel redundancy communication technology, and a high efficiency forward error correction channel coding technology, such that power consumption is reduced, and reliability and collection success rate are ensured; different wireless interfaces and different communication protocols are adopted in the communication between each subsystems of the wireless concentrated collection and management system, different wireless transmission frequencies are adopted in different wireless interfaces, and a transparent data transmission method is adopted, such that wireless data communication reliability, system compatibility, system flexibility and system applicability are ensured. With the system and the method provided by the present invention, data information which is real-time, real and reliable is provided for management departments, and real-time monitoring, statistics gathering, and analyzing of measurement instrument operation status are realized, such that managing and administrating capacities of management departments are improved.

The present invention discloses a method for resource allocation and rate control of dedicated channels in a Wideband Code Division Multiple Access (WCDMA) communication system, the method being characterized by comprising: a) the step of determining channel states of downlink DCH channels for non-realtime data services; b) the step of determining states of the users using said downlink DCH channels; and the step of correlating the channel states determined in step a) with the user states determined in step b), and dynamically allocating the DCH channels with certain rates to the users in the different User states according to a wireless measurement result measured by a current transmission channel and based on the priority and fairness requirements. According to the present invention, the method effectively realizes the bandwidth resource allocation and rate control, improves the radio resource availability and provides users, to the maximum extent, with a data service bandwidth as high as possible.

The invention belongs to the fields of measurement and wireless communication, disclosing a sound localization-based wireless measuring method. Firstly, a plurality of wireless acoustic sensors are arranged in a designated area; the coordinates of the sensors are confirmed, and one of the wireless sensors is used as a data aggregation and processing point; a positioning method by means of receiving a signal energy is adopted to localize the sound; a plurality of wireless acoustic sensors are used for measuring a sound signal sent by a target; and a plurality of the most suitable sensors are selected to participate into the sound localization according to a measured sound signal intensity so as to localize the sound by the positioning method by means of receiving the signal energy. In order to overcome the influence of noise and heterogeneity of a medium and to improve positioning accuracy, the problem of an equation set solution is changed into an optimization problem; and a steepest descent method is adopted to search the location of the sound so as to realize the sound localization. A sound localization system established by the invention has the advantages of convenient arrangement and strong adaptability, thereby especially being applied to the positioning of a military vehicle in an outdoor battlefield and an occasion such as an emergency treatment.

The present invention discloses a method for resource allocation and rate control of dedicated channels in a Wideband Code Division Multiple Access (WCDMA) communication system, the method being characterized by comprising: a) the step of determining channel states of downlink DCH channels for non-realtime data services; b) the step of determining states of the users using said downlink DCH channels; and the step of correlating the channel states determined in step a) with the user states determined in step b), and dynamically allocating the DCH channels with certain rates to the users in the different User states according to a wireless measurement result measured by a current transmission channel and based on the priority and fairness requirements. According to the present invention, the method effectively realizes the bandwidth resource allocation and rate control, improves the radio resource availability and provides users, to the maximum extent, with a data service bandwidth as high as possible.

A wireless measurement device includes a sound acoustic wave (SAW)-based micro sensor converting a wirelessly received pulse signal into an SAW and generating a plurality of pulse signals by reflecting the SAW, and wirelessly transmitting the plurality of pulse signals to measure a variance of an environmental element; and a reader generating and wirelessly transmitting a pulse signal to the SAW-based micro sensor to measure variances in environmental elements.

A floating wireless measuring device and system for a fluid concrete is used to measure a property of the fluid concrete inside a drum of a mixer truck and transmit data from the measurement.

The invention discloses a photovoltaic array positioning tracking monitoring system based on the internet of things and an operating method. The photovoltaic array positioning tracking monitoring system based on the internet of things is characterized in that a plurality of wireless measurement and control instruments are respectively used for collecting photovoltaic array data with 1-N numbered subdomains, respectively perform data interaction with the adjacent wireless measurement and control instruments by short distance wireless communication links, and then send interactive data to a wireless gateway, wherein the data comprise autonomous positioning data of the photovoltaic array; the data are uploaded to a wireless transceiver by intermediate distance wireless communication links and then are transmitted to a local master control center; the local master control center sends the data to a different master control center in a long-distance mode by an Internet network or a satellite communication system; and the data are subjected to verification and analysis and the wireless measurement and control instruments are subjected to remote control in accordance with the analysis result. The method of the wireless measurement and control instruments on the autonomous positioning of the photovoltaic array comprises a transmitting radius determination method, an initial positioning algorithm, a boundary problem processing method and a Y value conflict processing method. Accurate positioning of photovoltaic modules can be realized without expanding positioning devices, thus reducing the installation complexity and the error rate and strengthening the system robustness.

The invention provides an active acquisition system for a state of a mobile communication network and an active mentoring system based on the same, and relates to the field of communication. The invention solves the problems existing in the prior optimal platform or monitoring system that the idle state of a mobile phone cannot be utilized, and only shorter time can be utilized for network optimization. The active acquisition system for the state of the mobile communication network consists of a plurality of mobile communication terminals and a comprehensive platform; the mobile communication terminals can be set according to commands of the comprehensive platform to periodically upload data or record wireless measurement data when the wireless environmental measurement data meets a triggering condition and upload the data in real time; the uploading mode can be the FTP uploading by adopting short message service or data service of the mobile communication network; and for the active mentoring system, based on the active acquisition system, the comprehensive platform is additionally provided with a processing module and an optimizing module. The active acquisition system and the active mentoring system have the advantages of improving the probability of finding a network fault and providing the fully reliable data for the improvement of the efficiency and the quality of the network.

The invention provides a network-type intelligent training examination system, which comprises a training station, a student machine and a central control desk connected through a network, and also comprises intelligent examination software, an intelligent fault setting module, a question answering module and a finished automobile wireless measurement and control module. Compared with the prior art, the network-type intelligent training examination system has the advantages that: three types of faults, namely open circuit, poor contact and short circuit are set at different simulation positions, so that simulated faults are close to actually occurred faults of an automobile and better teaching effect is achieved; the training equipment is remotely controlled by the central control desk so as to fulfill the aim of separating question setting from question answering; multiple kinds of dynamic data of running vehicles are detected, and the authenticity of studied contents is improved; and multiple persons study simultaneously and the teaching efficiency is improved.

The invention relates to a greenhouse wireless sensor network control node device for intensive aquiculture by using a wireless measurement and control method, which is installed in a wireless measurement and control network of intensive aquiculture. The device is arranged in a culturing farm of an intensive aquiculture region, a collection node is used for collecting the parameters of water quality environment sensors, and the data collected by the sensor group is preprocessed by combining a rule base and an information fusion algorithm. A radial basis function neutral network algorithm (RBF algorithm) and the fuzzy computing technology are adopted as an algorithm model of information fusion, the collected data is subject to field level data fusion, and a ZigBee wireless module is used for sending fused abnormal water quality environment state and environment parameter data to a convergent node. The convergent node uploads the data to a monitoring center, and the monitoring center can monitor the growth conditions of cultured organisms, environmental conditions, control device operating conditions and the like of a plurality of culturing farms within a monitoring range in real time. The collection node can also receive the feedback information of the convergent node and the monitoring center and adjusts the parameters of the information fusion algorithm. The device is an information collection device for a wireless sensor network, has high efficiency, reliability and convenient operation, and is used for solving the difficulties of data real-time collection for culturing environment and filed level data fusion in the intensive aquiculture process by using the wireless sensors.

An apparatus, system, method, and program for wireless GPS surveying is disclosed. The system includes a surveying rover which receives GPS correction data from a wireless network. The wireless network includes such wireless networks as a digital wireless network and a circuit switched analog network.

The invention discloses a greenhouse three-layer wireless network measurement and control system and a layering and clustering method thereof, which comprehensively use wireless sensor network technology, wireless mobile network technology and the like. In the system and the method, a three-layer wireless network consists of a high-layer base station node, a greenhouse group control terminal, an intermediate-layer convergence cluster head node and a lower-layer nodes wireless sensor network node, the intermediate-layer convergence cluster head node is configured according to node cost, operation cost and the requirement on convenience information processing, and the configuration optimization of a lower-layer convergence cluster head node is realized by improving the selection method of aclassic LEACH clustering algorithm the cluster head nodes and applying a multi-objective optimization method. The method is favorable for reducing information transmission delay, cost and power consumption and improving information transmission efficiency. The system can be widely applied to agricultural facilities such as greenhouses, plastic tents and the like, and other indoor environments suchas hospital buildings, hotels or hotel buildings, halls, studio halls, superstores, supermarkets and the like to realize information wireless measurement and control.

The invention discloses a wireless reading circuit for a passive LC resonator sensor. The wireless reading circuit comprises a single chip microcomputer control module, a direct digital synthesis (DDS) swept signal generating module, a radio-frequency bridge detection module, a buffer amplifier module, a key and a display module, wherein four arms of a radio-frequency bridge respectively consist of three 50 ohm precision resistors and a reading coil; and one reading coil and the passive LC sensor form a loosely coupled transformer. The passive reading circuit is simple in structure and easy to implement, and can wirelessly measure the resonant frequency of the passive LC sensor to realize the passive wireless sensor function.

The invention discloses a method and a system for revising network coverage. The method includes the following steps: obtaining the timing advance Tadv from a user terminal to a base station and an antenna arrival angle AOA according to wireless measurement data reported by the user terminal and the base station; predicting the network sector coverage according to a geographic information system; revising the radius according to the prediction of the Tadv to the sector coverage; and revising the radian range according to the prediction of the AOA to the sector coverage. The method and the system for revising the network coverage can obtain more accurate sector level network coverage, further performs accurate presentation and solves the technologic problem that the actual network sector coverage situation cannot be reflected really and accurately in the prior art.

The invention provides a water saving and control intelligent management method for regulating and controlling paddy field non-point source pollution. The method includes the following steps: a step 1, acquiring essential data of weather, water level, and soil moisture content of each paddy field area through an information acquisition device arranged in a paddy field monitoring area, and sending the acquired data to a wireless measurement and control module; a step 2, receiving the data through the wireless measurement and control module, and sending the data to a system analysis center; allowing the system analysis center to automatically operate a preset program to generate an open and closure control signal of an irrigation valve and a drainage gate according to the preset paddy field irrigation / drainage analysis program; and a step 3, allowing an intelligent controller to control open and closure of the irrigation valve and the drainage gate according to the signal received from the system analysis center, and sending the relevant essential data to a mobile phone monitoring terminal to perform manual control. The method can achieve regulation and control of output of paddy field non-point source pollution, can minimize non-point source nitrogen and phosphorus loss, and can achieve digital accurate control of water level depth of paddy field water-saving irrigation.

The invention relates to a sensor suitable for passive wireless measurement of torque. The sensor has temperature and vibration compensation functions. The passive wireless torque sensor of the present invention includes four surface acoustic wave resonators with different center frequencies, a small antenna and an elastic shaft of the sensor. The surface acoustic wave resonator of this sensor uses quartz as the substrate of the resonator. The interdigital transducer and reflection grid are deposited on the substrate, and the piezoelectric effect and inverse piezoelectric effect are used to excite and receive the surface acoustic wave. The four surface acoustic wave resonators of the torque sensor are pasted on the elastic shaft according to the design angle. When torque is applied to the elastic shaft, the four surface acoustic wave resonators can respectively detect the deformation in the pasting direction. The four deformations can be obtained by processing the temperature , Torque information after vibration compensation. The four surface acoustic wave resonators are connected with the antenna, which can realize the wireless transmission of force state information. The invention has the advantages of simple structure, small size, light weight, high precision, passive wireless, and is suitable for passive wireless measurement of torque of important shaft parts such as aerospace, transmission machinery, precision machine tools, and heavy vehicles.

A measurement transmitter includes a main housing body with a first cavity closed by a first cover and a second cavity closed by a second cover. A measurement circuit assembly in the first cavity includes power and service communication conductors that extend through the main housing body to contacts in the second cavity. A replaceable module plugs into the contacts in the second cavity and includes a primary battery and a service communication connector. The service communication connector is exposed for connection to service equipment by removal of the second cover.

The invention belongs to the technical field of ship model experimental equipment, and relates to a multifunctional ship model experimental measurement device. A bow and a midship of a ship model are respectively provided with a cabin. A frame is installed in the cabin of the bow of the ship model. A liquid tank is installed in the cabin of the midship of the ship model, and a deck is placed on the upper portion of the liquid tank. A standard block for an experiment is placed on the frame or the deck, resistance towing brackets are symmetrically arranged on the two sides of the midship of the ship model, a power supply and a tilt angle sensor are sequentially installed on the deck of the bow of the ship model, the tilt angle sensor is in electrical information communication with the power supply and a signal emitter, the signal emitter is installed on the deck of a stem of the ship model, a signal receiver is in electrical information connection with a handheld displayer and a computer, and the signal receiver, the handheld displayer and the computer jointly form a signal receiving device. The multifunctional ship model experimental measurement device is simple in structure and convenient to operate, measured data are accurate, various ship model experiments can be conducted, wireless measurement is combined with wired measurement, and the requirement for measuring different environments can be met.

The invention relates to an individual soldier helmet type emergency command system based on various 3G (3rd-Generation) wireless networks, belonging to a system for wireless multifunctional communication based on an individual soldier knapsack and a helmet platform structure. The individual soldier helmet type emergency command system comprises a fully functional helmet, a master controller, the individual soldier knapsack and an operation box. The fully functional helmet is provided with a video camera, an illuminating lamp, a video display unit, a touch sensing type microphone and bony earphones. The master controller is arranged in the individual soldier knapsack. A wireless communication module, a five-path communication antenna, a multi-mode wireless communication module, a network exchange module and a data acquisition and exchange interface are arranged in the master controller. An individual soldier knapsack belt is provided with the operation box. The system does not need to be externally connected with display devices, supports traditional various 3G networks for two-way wireless transmission and interaction of audio and video signals and data, and can be used for executing a plurality of functions, such as remote command, wireless video sessions, image transmission, wireless reconnaissance, wireless measurement, and the like.

The invention relates to a measurement system for the wireless and position-independent measurement of the temperature of the load of an oven with high accuracy using passive temperature probes. The measurement system for the wireless measurement of the temperature of food or workpieces in ovens has an interrogation unit located outside the oven chamber, one or more interrogation antennas located in the oven chamber and at least one passively operated temperature probe with a probe antenna and at least one temperature sensor designed as a resonator, said temperature probe being freely movable within the oven, characterized in that the temperature sensor has at least two resonances with different temperature coefficients of frequency, wherein the electrical equivalent circuit diagrams of the resonance elements differ only slightly from each other.

The information system and method for collecting, transferring and administrating quality control data, and particularly HACCP data disclosed allows bi-directional communication between a plurality of remote wireless measurement devices and a central web server through a local com / data link. The com / data link provides wireless communication with the various measurement devices and communication with the web server via an Internet connection. An Internet based database and website interface provides centralized data storage and easily accessible data management and analysis. Administrator / users can access and manage the data from any location or device with Internet connectivity. The measurement devices allow their operation and functions to be configured and reconfigured by uploading customized device “data packets” into the devices system memory. The Internet-based user interface allows administrator / users to remotely customize and modify these “data packets” for each individual measurement device to suit each specific application. The bi-directional communication between the various wireless measurement devices and the web server allows administrator / users to reconfigure each individual measurement device remotely through an Internet-based user interface.

The invention relates to a wireless measurement method for measuring the human body temperature, particularly relates to a design method for implementing a human body temperature collector (1), a human body temperature data wireless receiving / displaying monitoring device (9) and a wireless repeater (19) by adopting the ZigBee wireless technology. For overcoming the shortcomings existing in the existing body temperature measuring method, the invention provides a wireless body temperature measuring and data collecting method. By using the ZigBee wireless network technology, the body temperature is measured by the human body temperature collector (1), then the temperature is transmitted to the displaying monitoring device (9) in real time according to a ZigBee network protocol so as to realize wireless monitoring measurement, and the human body temperature collector (1) can be set and controlled so as to achieve the functions such as warning. One displaying monitoring device (9) can support the data collection, transmission and control of a plurality of human body temperature collectors (1) and the wireless repeater (19), and compared with other similar wireless thermometers, the displaying monitoring device (9) is lower in power consumption, better in instantaneity and simple and easy in design.

The invention discloses a mobile terminal positioning method and system. The method comprises that a mobile positioning center sends a GPS positioning request message to a mobile station through a mobile exchange center or a PTT scheduling server, so as to enable the mobile station to GPS positioning according to the GPS positioning request message; the mobile positioning center receives positioninformation of the mobile station forwarded by the mobile exchange center or the PTT scheduling server, wherein the position information of the mobile station is obtained through GPS positioning. Position information obtained through using the GPS positioning has higher precision, since the time required for GPS positioning is less than the time required for wireless measurement, the time requiredfor positioning is shortened.

Systems and methods are disclosed that provide for regular, periodic or continuous monitoring of fluid volume based on direct measurement of an inferior vena cava (IVC) physical dimension using a wireless measurement sensor implanted in the IVC. By basing diagnostic decisions and treatments on changes in an IVC physical dimension, information on patient fluid state is available across the entire euvolemic range of fluid states, thus providing earlier warning of hypervolemia or hypovolemia and enabling the modulation of patient treatments to permit more stable long-term fluid management.

The invention relates to a measurement while drilling system, in particular to an underground coal mine anti-explosion mud-pulse wireless measurement while drilling system and a using method of the underground coal mine anti-explosion mud-pulse wireless measurement while drilling system. The underground coal mine anti-explosion mud-pulse wireless measurement while drilling system consists of a hole-in assembly and a hole-opening assembly, wherein the hole-in assembly comprises an anti-explosion exploring tube, an anti-explosion battery cylinder and an anti-explosion pulse generator, and the hole-opening assembly comprises an anti-explosion pressure transmitter and an anti-explosion computer and the like. According to the system, in the underground coal mine drilling construction process, a hole-in instrument is utilized for measuring the hole-in engineering parameters such as track parameters (dip angles and azimuth angles) of a drilling hole, state parameters (tool facing angles) of a directional drilling tool and the like in real time, and then the data is transmitted to a hole-opening instrument through a hydraulic channel in a wireless transmission manner and is processed and displayed by the anti-explosion computer at a hole opening. The system takes the mud as a signal carrier, adopts mud pulses as a data transmission mode, does not need to use a cable, not only can be used for directional drilling, but also can be used for rotary drilling, and has a real-time property and an anti-explosion property.