412 results about "Wireless measurement" patented technology

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 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.

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 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 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 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.