458results about How to "Realize the positioning function" patented technology

The invention discloses a method and a system for sending a positioning reference signal. The system comprises a PRS sequence obtaining unit for obtaining a 2*NRB<PRS> PRS sequence needed currently, a positioning unit for determining the position of the PRS sequence in a physical resource block and a sending unit for sending the PRS sequence in the position, wherein the obtaining unit comprises a PRS sequence generation unit for generating a PRS sequence with length of 2*NRB<max, DL>, and an interception unit for intercepting the 2*NRB<PRS> PRS sequence from the PRS sequence with length of 2*NRB<max, DL>. Therefore, the sending method and the sending system can directly intercept the PRS sequence needed currently or firstly generate the PRS sequence with the maximal length and then intercept the PRS sequence needed currently, thereby ensuring that the PRS sequence can be effectively obtained in various scenes and the positioning function of the PRS can be realized.

The invention discloses a double authentication-based word document electronic seal system and method. The system of the invention comprises a digital signature module, a BMP image-based fragile watermarking module, a word format information carrying-based robust watermarking module and a key management module. A double-authentication mechanism is adopted to realize the authentication of electronic seal; when the fragile watermarking is invalid, the robust watermarking can not only complete the inspection of the document, but also generate a document source analysis report and a tamper detection report to clear the issuer information of the file and the specific tampered position and ensure the integrity, truth, reliability and nonrepudiation of the electronic document. The invention has a perfect electronic seal management system and an identity authentication strategy based on hardware, and can provide further detection function for the tampered document and store the summary information of the document by means of the fragile image watermarking and the robust watermarking. The invention also discloses a double authentication-based word document electronic seal method.

The invention discloses a method for measuring and locating leakage of a gas pipeline network based on a geographic information system (GIS) and supervisory control and data acquisition technology (SCADA). The specific method comprises the following steps of establishing a gas pipeline network GIS system; reading and storing a pipe network graph, pipeline network attribute data and the like; collecting parameters of pressure, temperature and flow for each section of gas pipeline in real time by the SCADA system; comparing the collected parameters and the stored data and calculating; calculating the measuring values of the head end and the tail end of the pipeline and calculating the difference among parameter values; representing the abnormal pipeline information; searching extreme points and determining the pressure catastrophe points; calculating the position of the leakage point according to the parameters of gas consumption, temperature and pressure by using a leakage locating formula. By adopting SCADA, GIS and simulation calculations, the invention can realize self monitoring and locating of the gas pipelines with the advantages of quick measuring speed, high measuring precision, low missing report rate and false report rate and the like.

The invention relates to a disaster condition acquisition system capable of quickly acquiring disaster conditions after a disaster. Disaster condition images of a disaster area are acquired in real time by controlling an unmanned aerial vehicle to fly over the disaster area and using image acquisition equipment such as a video camera, a digital camera, a forward looking infrared unit and the like carried by the unmanned aerial vehicle, and the disaster condition images are transmitted to an image analysis device on the ground in real time; and the image analysis device processes the disaster condition images returned by the unmanned aerial vehicle in real time to acquire the disaster condition images of the disaster area in shortest time. The system breaks through the adverse situation that disaster relief is delayed because the communication of the disaster area is interrupted and the disaster conditions of the disaster area cannot be acquired in time after a catastrophe such as an earthquake and the like; and the system can provide first hand information for activities of quickly organizing rescue and relief work and reconstruction work after the disaster.

The invention pertains to the pipeline monitoring technology, particularly a fiber pipeline monitoring system. The system is composed of an optical transmitter module, an optical interferometer module, a monitoring line, a modulator module, an optical receiver module and a signal processing module. The system can get two signals corresponding to different optical path positions of the same vibration though multiplexing a fiber interference system, compare the spectrum characteristics of the two signals, and eliminate the interference of the position information caused by the vibration information so as to obtain the accurate vibration position information under the condition that the system adds no photoelectric detector. The position information is obtained through the medium value of the spectrum amplitude ratio of the two signals, and the difference caused by the instability of the detection signal is eliminated, thus the accuracy of the location is greatly improved. The location function is realized with single-core fiber under the condition of not constituting a loop, thus the location monitoring can be realized by paving equal-distance main line along the petroleum pipe line, which has strong environmental applicability.

The invention discloses an omnidirectional movable conveying robot. The omnidirectional movable conveying robot comprises a base, a lifting table, lifting devices and universal wheels, wherein the universal wheels are mounted at the bottom of the base; the lifting devices are mounted on the base; the lifting table is in a shape matched with the base, is supported on the base by the lifting devices and lifts and drops under the action of the lifting devices; each lifting device comprises a lifting arm which can be sunken into the base so as to reduce the overall height of the robot. According to the omnidirectional movable conveying robot, mechanism design is simplified, the lifting arms and a robot body are integrated, and the structure is compact, so that the robot can reach the goods bottom and convey goods directly through a lifting mechanism and occupies small warehouse space.

The invention relates to an intelligent identification management and dynamic monitoring system and a method for fixed assets. The system comprises a data acquisition system, a gateway node and a management center connected in sequence. The system acquires real-time electrical parameter information, environment state information, basic asset information and asset position information through the data acquisition system, the information is wirelessly uploaded to the management center via the gateway node, the management center stores, analyzes and processes the received information, and the analysis result is checked through a management terminal of the management center. Manual inventory and manual two-dimensional code scanning are saved for asset management, periodical asset inventory and active asset inventory can be realized through the system, high efficiency of the work is realized, manual input is reduced, and happening of various error conditions of inaccurate asset inventory, extra inventory, missed inventory and the like caused by manual inventory can be reduced.

The invention discloses a six-degree-of-freedom active vibration isolation device, which has the six-degree-of-freedom vibration isolation and positioning functions. The device comprises a lower platform, an upper platform and six support legs, wherein the six support legs are respectively connected with the upper platform and the lower platform through fixing blocks to form a Stewart parallel mechanism, the positions of the three fixing blocks on the lower platform are arranged in an equilateral triangle shape, the positions of the three fixing blocks on the upper platform are also arranged in an equilateral triangle shape, the six support legs are same in the structure, two adjacent support legs are mutually vertical with each other, each support leg comprises an active executer and an air spring which are formed into a parallel structure, and each air spring is used as a passive vibration isolation part. The device has the advantages that the combined method of active vibration isolation and passive vibration isolation is adopted, the ultra-low inherent frequency is realized, and the vibration with frequency exceeding the inherent frequency is effectively isolated; the good attenuation on the six-degree-of-freedom vibration is realized, and the precise positioning of six degrees of freedom is realized.

The invention relates to an external high-definition on-site law enforcement recorder. The recorder has the advantages of simple structure, convenient use, capability of imaging with high definition, convenient image playback, easy correction of camera shooting direction and the like. The structure of the recorder is that: a driving control circuit and a battery are arranged in a shell; the shell is externally connected with a high-definition camera through a connecting wire; the high-definition camera is connected with the driving control circuit and is provided with a corresponding movable filtering device and a lens direction aligning and imaging deflection correcting device; the driving control circuit is also connected with a wireless transmitting device; and the shell is provided with a data interface which is connected with the driving control circuit.

The invention discloses a full-automatic biochemical analysis method. The method comprises the following steps: (1) preparing; (2) sampling, sample adding and stirring: an XYZ triaxial movement system is driven by a controlling circuit module to drive a reagent-sample adding and stirring system to transfer samples from a sample cabin to a reaction cup in a reaction disc and transfer reagents from a reagent cabin to the reaction cup in the reaction disc; when the reagents and samples are transferred, liquid in the reaction cup is stirred through the reagent-sample adding and stirring system; the specific liquid volume of sampling and sample adding is controlled by a plunger pump; (3) biochemical reaction and detecting; (4) cleaning. According to the invention, procedures such as sampling, sample adding, stirring, analyzing and detecting, and cleaning are integrated, so that the degree of automation is high, the operation is convenient, the relevant equipment cost is low, the detecting efficiency is high, and the popularization and implementation are easy.

The invention relates to a radiation spectrum measurement system of the sky polarized light, belonging to the optical electron testing technology field, which is applicable to measuring the sky polarized light and spatial and temporal distribution analysis. The measurement system is consisted of a polarization measurement head, a telescopic optical system, a fiber spectrometer system and a computer. Arranging the polarization measurement head comprises: arranging a cylindrical rotary head on the inside of an interface (1); screwing down a ding screw; then putting a wafer-shaped polarizer in the lumen of the rotary head; using an annular pressing ring to compress and fix the polarizer on the rotary head via two bolts. An equatorial is arranged on an A-frame. Then a refractor is arranged above the equatorial. The back-end of anti-ultraviolet optical fiber is connected on a spectrograph. Then a cosine corrector is arranged on the front-end of the anti-ultraviolet optical fiber. And then the probe-end of the cosine corrector is inserted into an interface (2) and the ding screw is screwed down. The system is provided with strong currency, wide application range and convenient operation.

The invention discloses an automatic building board cutting device which comprises a base plate, supporting plates, a top plate, a cutting base plate, a base, an air cylinder, a lifting plate, a containing groove, a screw, a swivel nut, a connecting block, a tool apron, a cutter, a sliding block, a sliding groove, a storage groove, a hinge shaft, an installing plate and a supporting column; a rotating shaft is further arranged in the base, threaded sections are arranged at the two ends of the rotating shaft, the threaded directions of the two threaded sections are opposite, and threaded sleeves are installed on the threaded sections. The automatic building board cutting device is simple and reasonable in structure and quick and convenient to use; the screw can be used for achieving adjustment of the horizontal positions of the tool apron and the cutter, no dead corners exist during cutting, arranged pressure springs and stopping blocks can well press boards to be cut, and cutting is guaranteed; walking wheel mechanisms capable of being contained in the base are convenient to adjust, the functions of movement and positioning of the base can be achieved, carrying of the cutting device is facilitated, and the automatic building board cutting device is suitable for use and popularization.

The invention discloses a low-power Bluetooth intelligent asset management apparatus with an identity recognition function. The apparatus comprises electronic tags, an APP loading body and a server, wherein the electronic tags actively send out signals used for the APP loading body to receive, and the single APP loading body receives the signals sent by the electronic tags at the same time; an APP loaded on the APP loading body performs asset check through identity authentication, system updating, data downloading, tag configuration, tag locating and asset management; and during asset management, tag broadcasts are scanned through a Bluetooth module of the APP loading body, then identification and classification processing is performed through a fast addressing algorithm, and the asset management and statistics are finished. The deficiencies of low asset management efficiency, poor timeliness and high error rate caused by existing electronic tag collision and environment interference are overcome; and the apparatus has the characteristics of real-time asset management, high efficiency, no errors, localizability, rechargeability, reusability and the like.

The invention discloses an intelligent trolley positioning and navigation method based on a laser radar and a speedometer SLAM, and the method comprises the following steps: a slave controller acquires the speed information and pose information of a trolley through a motor encoder and an inertial measurement unit IMU so as to form speedometer information; a main controller scans the surrounding environment of the trolley through the laser radar to form environmental point cloud position information in a laser radar coordinate system; and the environmental point cloud position information in the laser radar coordinate system is combined with the speedometer information to form environmental position information in a world coordinate system so as to realize positioning and navigation of thetrolley. The invention further provides an intelligent trolley positioning and navigation system based on the laser radar and the odometer SLAM. According to the invention, an accurate environment mapcan be constructed in the moving environment of the trolley, and the target position of trolley navigation can be set on the constructed environment map through the upper computer, so that the automatic positioning and navigation functions of the intelligent trolley are realized, and the accuracy is relatively high.

The invention provides a vehicle positioning method and parking management equipment. The parking management equipment is in communication connection with at least two cameras, and the method comprises the steps: obtaining the vehicle information of a vehicle when the vehicle is detected to enter a monitoring region of the first camera, wherein the vehicle information comprises the identificationinformation and / or vehicle type information; judging whether the vehicle information and preset target vehicle information are matched or not; determining that the vehicle is the target vehicle if thevehicle information and the preset target vehicle information are matched, calling the cameras to monitor and mark the moving track of the target vehicle, and determining the real-time position of the target vehicle. According to the invention, at least two cameras in a parking lot are used for the monitoring of the vehicle, and the position information of the target vehicle can be determined inreal time, and the moving track of the target vehicle is marked, thereby achieving a vehicle positioning function in the parking lot, improving the user experience, and solving a technical problem inthe prior art.

The invention relates to an indoor positioning system and method. The system comprises a number of beacons which are arranged indoors, acquire a hotspot exploring data packet sent by a mobile device, and determine identity information and signal intensity information corresponding to the mobile device, and a server which is connected with a number of beacons, receives the identity information and the signal intensity information corresponding to the mobile device, and determines the coordinate information of the mobile device according to the position information of the beacons. The identity information and the signal intensity information are corresponding to the mobile device and are sent by the beacons. According to the invention, the wireless hotspot exploring data packet sent by WI-FI of the mobile device is used; through the identity information and the signal intensity information in the wireless hotspot exploring data packet, the coordinate information of the mobile device is acquired; and a positioning function of the mobile device is realized.

The invention provides a baseband processing device for receiving broadcasting processing signals, comprising a frame synchronization module, a rough capture module, a fine capture module, a tracking decoding module and a positioning calculation module which are sequentially connected. The frame synchronization module is used for carrying out frame synchronization on a baseband signal, the rough capture module is used for carrying out rough frequency offset estimation on the baseband signal, and the fine capture module is used for carrying out fine frequency offset estimation on the baseband signal; and the tracking decoding module is used for tracking the carrier phases and the code phases of successfully-captured and tracking spread-spectrum signals in various paths, decoding a telegraph text in broadcasting positioning signals, transmitted by different transmitter devices, calculating the SNR (Signal-to-Noise Ratio) of each path and calculating a delay difference according to the code phases of the broadcasting positioning signals of different broadcasting transmitter devices in different paths. The invention also provides a baseband processing method for receiving broadcastingpositioning signals and realizes the positioning function through acquiring the telegraph text and the parameters of the broadcasting positioning signals, such as delay difference, SNR, and the like,wherein the telegraph text is transferred by the broadcasting positioning signals and transmitted by different transmitter devices.

The invention discloses a multifunctional intelligent safety cap early-warning system and method, and the system comprises a safety cap, a sensor module, an RFID tag module, an RFID reader, a Bluetooth transmission module, a vibrator, a power module, a cellphone client, and a project department data analysis platform. The sensor module and the vibrator are connected with the Bluetooth transmission module, and the power module is connected with the sensor module, the vibrator, the RFID tag module and the Bluetooth transmission module. The sensor module comprises a pulse sensor, a body temperature sensor, an acceleration sensor and a gyro sensor, timely obtains the physiological status of a human body, transmits the information to the cellphone client for processing through the Bluetooth transmission module, and then enables the project department data analysis platform to send an activation instruction to the vibrator, so as to carry out anti-fall early warning. Through the arrangement of an active RFID tag and the arrangement of an RFID reader on a construction site, the system achieves functions of person recognition and positioning. The system enables a plurality of functions to be integrated in a common safety cap, is convenient to use, is accurate in early warning, and is good in market prospect.

The invention relates to an inbuilt high-definition on-site law enforcement recorder which has the advantages of simple structure, convenient use, high-definition imaging, convenient image playback, easy shooting direction correction and the like. The structure is as follows: the inbuilt high-definition on-site law enforcement recorder comprises a case; a driving control circuit and batteries are arranged in the case; a high-definition camera is arranged in the case, is connected with the driving control circuit and is provided with a corresponding movable filter device and a lens direction aiming and imaging deflection correction device; the driving control circuit is connected with a wireless transmission device; and the case is provided with a data interface which is electrically connected with the driving control circuit.

The invention discloses a novel full-automatic biochemical analyzer, comprising a pedestal (15), a reagent-sample introducing and stirring system (4), a control circuit module, a sample storage device, a reagent storage device, a rotary reaction disc (13), a stepping motor used for driving the reaction disc to rotate, a cleaning system (11), a plunger pump (12), a photoelectric detection system (9) and an XYZ triaxial moving system used for driving the reagent-sample introducing and stirring system to rotate, wherein the control circuit module, the sample storage device, the reagent storage device, the rotary reaction disc (13), the stepping motor, the cleaning system (11), the plunger pump (12), the photoelectric detection system (9) and the XYZ triaxial moving system are arranged on the pedestal, and the reagent-sample introducing and stirring system (4) has an integrated introducing and stirring function and is arranged on a Z-direction sliding assembly. The novel full-automatic biochemical analyzer provided by the invention integrates procedures consisting of sampling, sample introduction, stirring, analysis and detection, cleaning, etc., realizes full process automation and has the advantages of a high degree of automation, convenient operation, low cost, high testing efficiency and easy popularization and application.

The invention discloses a kindergarten security and protection system provided with active radio frequency identification (RFID) tags. The kindergarten security and protection system comprises the active RFID tags worn on students, a data server and a plurality of card readers, wherein each active RFID tag is formed by a coupling element and a chip, and the card readers are used for reading signals transmitted by the active RFID tags. The card readers are connected with the data server through a wireless gateway. The data server is connected with a terminal display which is arranged in a campus security and protection control room and used for displaying results of the data server. Alarm keys are arranged on the active RFID tags. The kindergarten security and protection system based on the non-contact type automatic identification technology can automatically identify a target object through radio frequency signals and obtain relevant data, achieves the functions of locating and alarm of the students in a campus, monitors the conditions of the students entering and going out of the campus, timely masters the activity status of the students, timely reminds and processes dangers, and guarantees safety of the students.

The invention relates to the technical field of washing, in particular to a rotary knob component with self-locking and positioning functions. The rotary knob component is applied to controllers of household appliances such as washing machine and the like and comprises a rotary knob and a fixing base, the rotary knob is provided with a bushing, the fixing base is provided with a positioning sleeve which can be matched with the bushing, the bushing can be rotatably inserted into the positioning sleeve and is provided with an annular clamping groove, a clamping claw corresponding to the annular clamping groove is arranged on the positioning sleeve of the fixing base, and the clamping claw is clamped in the annular clamping groove when the bushing and the positioning sleeve are matched. The rotary knob component is simple in structure and assembly mode and low in production cost, and the problem of eccentricity of the rotary knob due to shaking is solved. Preferably, a height difference is formed between the lower edge of a shell and the top end of a boss, so that water is prevented from entering the washing machine even if the water enters a gap between the rotary knob and the fixing base, and the rotary knob component realizes self-locking, positioning and waterproof functions at the same time.

The invention discloses a method and a device for GPS navigation message data bit synchronization under weak signals. The method comprises the following steps: when a GPS receiver enters a GPS satellite signal capturing state, acquiring and obtaining GPS satellite signal data to be captured; calculating the maximum likelihood rate of a bit boundary in single-navigation message data bits; calculating the maximum likelihood rate of a navigation message data bit boundary with a set length; and according to the calculation results, judging the boundary and data values of accurate navigation message data bits, and judging whether the signal is output to a GPS signal tracking module to assist the tracking function till having the auxiliary tracking function, and carrying out bit synchronization operation. Under the condition that the GPS satellite signals are weak, the method and the device can quickly and accurately acquire the exact position of phase turnover of the GPS navigation message data so that the GPS receiver successfully enters a tracking state to realize the positioning function.

The invention discloses an intelligent internet-of-things perception regulation and control system and method based on a low-voltage distribution network area, and an energy controller, a branch box monitoring device, a meter box monitoring device, and a new energy monitoring device and the like are used as Internet of Things sensing nodes and are installed at a distribution transformer low-voltage side main switch outgoing line, a branch box outgoing line, a meter box outgoing line, a distributed photovoltaic device, a charging pile and the like. The functions of monitoring the state of each low-voltage switch of the low-voltage power distribution network, synchronously acquiring periodic electric energy data such as voltage, current, power and indicating value of segmented lines, users, distributed photovoltaic and charging piles, and carrying out edge calculation such as area quasi-real-time line loss calculation and abnormal alarm are realized; functional applications such as low-voltage user power failure active reporting, transformer area topology automatic identification, meter box access control state monitoring, distributed photovoltaic monitoring and ordered charging pile charging are realized, and intelligent panoramic sensing and quasi-real-time monitoring of the running state of the low-voltage distribution transformer network are comprehensively realized.

The invention discloses a positioning method and system of a fiber grating. The basic principle is based on a fiber grating wavelength demodulation device of a tunable light source, due to the fact that the tunable light source has a wavelength constant-speed linear scanning characteristic, the wavelength scanning order of the tunable light source is set, namely reciprocating scanning is carried out once respectively with a short wave as a start point and with a long wave as a start point, the practical central wavelength of the fiber grating and the difference between a calculation wavelength obtained through wavelength scanning and the practical wavelength can be calculated, and accordingly the distance between the fiber grating to be detected and the wavelength demodulation device can be obtained. The fiber grating is laid on a device with the temperature or a stress point to be detected, due to the positioning system, wavelength demodulation is carried out, meanwhile, positioning information, accurate wavelength information, corresponding temperature information and strain information and other parameters can be obtained, the structure of a fiber grating demodulation system is greatly simplified, and system cost is reduced due to the fact that an OTDR technique is needless.

The invention discloses a wireless transmission based data acquisition system and acquisition method with ultra-low power consumption. The system comprises a cloud platform, a gateway communicating with the cloud platform through a mobile network and at least one honeycomb in data communication with the gateway through a wireless module, wherein the honeycomb comprises a single-chip microcomputer, a sensor in communication connection with the single-chip microcomputer, a power management module regularly powering on the sensor and a battery electrically connected with the power management module; the single-chip microcomputer of the honeycomb comprises a data strobe module and a self-power-off module, the data strobe module receives detection data of the sensor and transmits the detection data in the range of the detection parameter threshold value to the wireless module, and the self-power-off module is used for shutting down the sensor and is in communication connection with the power management module; the gateway receives the detection data transmitted through the wireless module and sends the detection data to a cloud platform through the mobile network module. By means of the wireless transmission based data acquisition system and acquisition method, real-time on-line monitoring of the sensor in the low temperature environment for a long time is realized, and the gateway equipment is located.

The invention relates to the field of driving control, in particular to a driving positioning device and a driving positioning method. The driving positioning device based on radio frequency identification technology comprises a radio frequency identification antenna, radio frequency identification reader and writer, an electronic tag and a master control computer. The radio frequency identification reader and writer are fixedly installed on a carriage and a trolley respectively. The master control computer is connected with the radio frequency identification antenna through the radio frequency identification reader and writer. The electronic tag is installed on a driving track and the carriage. The driving positioning method based on the radio frequency identification technology includes: defining a space coordinates system, setting the electronic tag at the position matching with the coordinates system, writing position data information in the electronic tag in advance, and allowing the radio frequency identification antenna to read the electronic tag to achieve automatic driving positioning. The driving positioning method is a non-contact positioning technology. Wear and errors caused by mechanical devices are avoided. By writing relevant information in the electronic tag, the positioning function can be realized, and current material stacking and driving status information can also be reflected.

The invention discloses a method for positioning a monitoring target by using video monitoring devices. The method comprises the following steps of 1) controlling the two video monitoring devices which are not located on the same straight line with the monitoring target, and monitoring the monitoring target by using the two video monitoring devices simultaneously; and locating the monitoring target at the center of a video image; 2) reading position information of each video monitoring device and geographic angle information of a current camera by a control system; and 3) calculating to obtain position information of the monitoring target according to the position information and the geographic angle information of each video monitoring device, and outputting the position information of the monitoring target by using the control system. The invention further discloses a positioning device capable of realizing the method simultaneously. According to the positioning method provided by the invention, former monitoring equipment only needs to be slightly improved, so that the function of positioning the monitoring target can be realized. Furthermore, a farther target can be seen through the monitoring equipment, so that the method provided by the invention has the characteristics of low cost, high precision, and far measured distance.

A positioning method and a positioning apparatus for rock-loader bucket are disclosed and belong to the field of mine loading machineries. The positioning apparatus comprises a control mechanism and a positioning mechanism, the control mechanism is fixedly disposed on the main body of a rock loader, and the positioning mechanism is installed on the main body of the rock loader. The positioning apparatus is characterized in that the control mechanism is provided with a jacking part and a retraction part, and the positioning mechanism is provided with a pawl rotating shaft and a bucket-driving-wheel rotating shaft; the control mechanism jacks up a pawl along the pawl rotating shaft through the jacking part and enables the pawl to be clamped in a positioning ratchet coaxially arranged with a bucket driving wheel, so that a bucket of the rock loader is suspended in an optional working position in a positioning way by locking the bucket driving wheel; and the positioning mechanism pulls back the pawl along the pawl rotating shaft through the retraction part and enables the pawl to break away from the positioning ratchet, the bucket locked by the positioning ratchet recovers rotation, and the bucket of the rock loader is driven to recover running through the bucket driving wheel coaxially arranged with the positioning ratchet. The equipment is reasonable in structure and simple to operate.