227results about How to "Reduce system cost" patented technology

Multi-node management method and system

The embodiment of the invention provides a multi-node management method and a multi-node management system. The system is characterized in that: the system comprises a plurality of nodes connected with one another through a local area network; one of the nodes is a master node, the other nodes are sequenced slave nodes, when the master node is anomalous, one of the slave nodes is taken as a new master node, wherein each node comprises a baseboard management controller (BMC) management subsystem; the BMC management subsystem is used for executing the monitoring management of the node to which the BMC management subsystem belongs and generating monitoring information; when taken as the master node, the node is also used for connecting the slave nodes through the local area network, executing system management of a plurality of nodes and generating system management information by interacting with an outer network; or when taken as slave nodes, the nodes are used for transmitting the monitoring information to the master node or receiving the system management information transmitted by the master node. According to the technical scheme, the processing capability of the BMC is utilized, so that system cost is reduced; and in addition, according to a master-slave relationship formed among a plurality of nodes, the reliability and the fault-tolerant property of the system can be improved.

Supercritical air energy storage system with novel process

The invention discloses a supercritical air energy storage/release system with a novel process. The off-peak (low price) electricity of the power station is adopted by the system to compress the air to a supercritical state (simultaneously store the heat of compression), an expansion machine is utilized to cool the air, simultaneously the work of expansion is recycled to drive a first-stage compressor to improve the system efficiency, and the stored cold energy is utilized to cool, liquefy and store (store the energy) the supercritical air; at a peak of electricity consumption, the liquid air is compressed and absorbs heat to be supercritical (simultaneously recycles the cold energy), further after absorbing the compression heat or the other industrial exhaust heat, the solar energy central heating and the like, the liquid air drives the generator to generate electricity (release energy) through a turbine. The supercritical air energy storage system disclosed by the invention has the advantages of having high energy density and high efficiency, being free from limitation of the energy storage period and the geography condition, being suitable for a variety of power stations (including regenerative energy power stations such as wind energy), being environment-friendly, being capable of recycling the middle-low temperature (heat value) waste heat, and the like.

Real-time deformation monitoring pre-warning system and real-time deformation monitoring pre-warning method based on inertia-assistance positioning receiver

The invention relates to a real-time deformation monitoring pre-warning system based on an inertia-assistance positioning receiver and a real-time deformation monitoring pre-warning method based on the inertia-assistance positioning receiver. The real-time deformation monitoring pre-warning system is characterized by comprising a GNSS (global navigation satellite system) receiver, an accelerometer, a deformation monitoring device including a data interface and a time synchronization module, and a GNSS correction information obtaining device connected with the GNSS receiver and the deformation monitoring device respectively, wherein the data interface is connected with the time synchronization module in sequence, and the GNSS receiver and the accelerometer are connected with the data interface simultaneously. The GNSS receiver outputs the precise positioning result in real time; meanwhile, the accelerometer is adopted to help to capture dynamic deformation signals, the sampling rate stored by data is adjusted reasonably, and the storage space is saved; and due to the arrangement of a buffer area, the high-sampling-rate data of foreboding period of the severe deformation can be stored completely. The system and the method can be widely applied to the monitoring and the pre-warning of the geological disasters such as earthquake, landslide and the like, and applied to the deformation monitoring of dams, bridges, high-rise buildings and the like.

Wireless code hopping system, device and method for remote control door lock

The invention discloses a wireless code hopping system and a device for a remote control door lock. The system comprises a remote control key and the remote control door lock, wherein the remote control key comprises a trigger module, a first storage module, an encryption module and a transmitting module; the remote control door lock comprises a decryption module, a second storage module and a control unit; the trigger module is used for transmitting a trigger signal after the push-down of a button is determined; the first storage module is used for storing a hopping code, namely a hopping code updated after the trigger signal is transmitted every time, and a product serial number; the encryption module provided with an encryption program is used for performing raw data encryption on the read product serial number, the read hopping code and button information; the transmitting module is used for transmitting encryption data acquired after the encryption at high frequency; the remote control door lock is used for receiving the encryption data; the decryption module provided with a decryption program is used for decrypting the received encryption data to acquire raw data; and the control unit is used for judging whether to perform the unlocking/locking action of the remote control door lock by matching the raw data with a production serial number and a hopping code which are stored in the second storage module. The system and the device have low cost, high stability and high reliability.

Multifunctional grid-connected parallel inverter group intelligent control method used in microgrid

ActiveCN105391071AReduce system costSave the cost of connecting wiresEnergy industryReactive power adjustment/elimination/compensationPower inverterPower quality control
The invention relates to microgrid and power quality management and aims to provide a multifunctional grid-connected parallel inverter group intelligent control method used in a microgrid. According to the control method, aiming at selected harmonics and reactive current at PCC of a grid-connected point of the microgrid, a multifunctional inverter group intelligent control strategy is adopted; a full-distributed hierarchical control scheme based on a finite time consistency algorithm is adopted for compensation; and all distributed power supplies share compensation capacity according to respective surplus capacity proportions. On the condition of no increase of extra power quality control equipment of the microgrid, the control method disclosed by the invention overcomes the defect that a single inverter has surplus capacity deficiency in term of compensation of harmonics and reactive current; the function that a multifunctional inverter group shares compensation capacity according to surplus capacity proportions can be achieved without use of a central controller. With adoption of the control method, the investment and operation maintenance cost of the microgrid can be reduced, the power quality of the microgrid can be improved and high flexibility can be achieved.

Three-dimensional flow field image measurement device and method adopting single lens

InactiveCN102798512ASimplify measurement systems and data processingReduce system costHydrodynamic testingPolarizerCMOS
The invention discloses a three-dimensional flow field image measurement device and method adopting a single lens, which are characterized in that a polarized light source is used for illuminating a flow field to be detected; light from a camera lens is divided into two paths through a light splitting prism and polaroids are respectively used for carrying out polarization detection for the two paths; two CCDs (Charge Coupled Device) or CMOS (Complementary Metal-Oxide-Semiconductor Transistor) image sensors are respectively used for imaging; a relative gray level of a corresponding tracer particle in two pictures can be used for judging whether the tracer particle is located in front of a focusing plane or in back of the focusing plane; the distance between the position of the tracer particle and the focusing plane is computed according to the size of a defocusing amount of the tracer particle of the single picture, so as to only determine a three-dimensional position of the tracer particle; and a movement fuzzy parameter is combined to further obtain a three-dimensional movement speed of the tracer particle, namely the information of a three-dimensional flow field is obtained. The three-dimensional flow field image measurement device and method adopting the single lens have the beneficial effects that the three-dimensional measurement of a transient flow field can be realized by only one camera lens, a measurement system and a data processing process are simplified, and the system cost is reduced.

Device and method for acquiring biological electric signals

ActiveCN102488509AReduce the amount usedReduce system costDiagnostic recording/measuringSensorsTime constantDifferential amplification
The invention relates to a device and a method for acquiring biological electric signals. The full differential amplification technology is used on a signal acquisition channel, so that a link that transition is performed by using a single-ended signal in the processes of converting a differential signal into the single-ended signal and converting the single-ended signal into the differential signal in the conventional products is avoided; an analogue switch is utilized reasonably by utilizing the cost advantage of the analogue switch relative to instrument amplifiers and computing amplifiers according to system parameters to reduce the using quantity of the instrument amplifiers; a system can detect a pace-making pulse signal directly in an undistorted mode when reaching the sampling rate of 20 kilo samples per second (Ksps), so that a complex PACE widening circuit is not required to be used; the cost of the system is reduced; in a direct-current amplifying circuit structure, a time constant circuit is not provided, the signals are quickly detected, a baseline is stable, the dynamic input range of the signals is large, a small number of devices are provided, the reliability is high, and the miniaturization of products is facilitated; and by the matching of a high-speed analog-digital converter, the sampling rate of the system can be improved.

Fcc-compliant, movement artifact-free image sensor array with reduced lighting requirement

A capsule camera includes a pixel cell array of pixel cells exposed to light from a field of view, an illuminating system that illuminates the field of view, a signal processor receiving and processing data from the pixel cell array, and a control module that causes the pixel cell array to be read out using an improved scanning method. The scanning method includes pre-charging the pixel cells in the pixel cell array, illuminating a field of view of the pixel cells for a predetermined exposure time, and reading out data from the pixel cells only after the illuminating of the field of view is completed. The pre-charging of the pixel cells is carried out over a predetermined time period prior to the field of view being illuminated. The rows of the pixel may be precharged at different times. The time interval between the precharging and the reading out of the pixel cells in each row may be substantially the same. In one instance, the reading out of the pixel cell array is spread out to substantially the time between capturing successive frames of image data. As a result, a transmitter may transmit the processed image data at an average data rate falling substantially within the allowable bandwidth of transmission under the FCC MISC band. In one instance, each row of pixel cells is exposed for the entire duration the illumination system is turned on. A group of pixel cells may be provided outside of the field of view (e.g., at the outer edge of the pixel cell or sensor array. The data that is read from this group of pixels outside the field of view may be used to compensate for thermal and system noise in the data within the field of view.

Portable multi-component online monitor of gas dissolved in transformer oil

The invention discloses a portable multi-component online monitor of gas dissolved in transformer oil. A plurality of semiconductor lasers are arranged in a main chassis, each semiconductor laser is connected with a semiconductor laser controller, each semiconductor laser is jointly connected with a signal generating circuit and a 1*N photoswitch, the 1*N photoswitch is connected with an output optical fiber connector on the main chassis, the output optical fiber connector is connected into a long-optical distance gas absorption cell through an output optical fiber, the long-optical distance gas absorption cell is connected with an input optical fiber, the other end of the input optical fiber is connected with an input optical fiber connector on the main chassis, the input optical fiber connector is connected with a calibration absorption cell in the main chassis, and a focusing lens, an infrared photoelectric detector, a connecting lock-in amplifier and a data acquisition control module are sequentially arranged at a front-end light exit of the calibration absorption cell. According to the portable multi-component online monitor, the demand on safe monitoring of a transformer is met, and the high-sensitivity and real-time online monitoring of a failure of the transformer is actually realized.

Urban fire disaster monitoring system based on the Internet of Things architecture and WebGIS

The invention discloses an urban fire disaster monitoring system based on the Internet of Things architecture and the WebGIS, and belongs to the field of environmental monitoring. The urban fire disaster monitoring system comprises a sensor node, a gateway coordinating node, a server and a client side. The sensor node comprises a humiture sensor and a wireless transmission module, and is used for measuring humiture data and sending the data to the gateway coordinating node, or is regarded as a routing node to forward the data. The gateway coordinating node comprises a wireless transmission module and a GPRS communication module, and is used for receiving and analyzing data of a child node and sending the data to the server. The server comprises a Web server, a GIS server and a database server, and is used for analyzing and processing the data of the sensor and generating an urban fire risk level model map which comprises a fire risk level and positional information. The client side is used for remote detection, prevention and positioning on fire risk data, setting of remote parameters and the like. The system construction cost is low, network nodes can be rapidly expanded, and remote monitoring, predicting and positioning on urban fire disasters of different areas in a network are achieved.

Front wheel angle measuring system based on double GNSS antennas and uniaxial MEMS gyroscope

The invention discloses a front wheel angle measuring system based on double GNSS antennas and a uniaxial MEMS gyroscope. The system is mainly composed of a uniaxial MEMS gyroscope which can be mounted on a wheel of a vehicle, two GNSS receivers which can be mounted on two sides of the vehicle body and a navigation control computer. A group of moving information data is measured for each part of the system by using the uniaxial MEMS gyroscope and the two GNSS receivers, and information on moving data of each part is processed to obtain moving gesture information of a main body and related angular moving information between the main body and a rotating mechanism; and the GNSS antennas and the uniaxial MEMS gyroscope collect moving part data, and the navigation control computer substitutes the speed resolved by the GNSS antennas after error compensation of a lever arm into a Kalman filter model to estimate the rotating angle of the wheel relative to the main body. The double GNSS antenna system can eliminate or reduce atmospheric errors and ionospheric errors. The moving information of the system is collected by using the uniaxial MEMS gyroscope, so that the system cost is lowered and the system mounting process is simplified.
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