164results about How to "Real-time monitoring of operating conditions" patented technology

The present invention discloses method and system to make monitoring to communication service quality according to service level agreement SLA. It contains configuring service quality manager in service provider SP network, configuring performance strategy processor in service transmission network; said service quality manager according to need insured SLA to establish monitoring strategy and issuing to performance strategy processor in service transmission network; performance strategy processor according to said monitoring strategy to make monitoring collection to performance parameter in service transmission network, and reporting said monitoring collected information to service quality manager; service quality manager according to reported performance parameter determining SLA corresponded service quality. The present invention can realize monitoring service transmission network service quality according to SLA in wide area network environment, thereby effectively ensuring SLA.

An electric network transformer monitoring device comprises a data acquisition unit, a communication unit, a data processing unit, a control unit and a power supply unit, wherein the data acquisition unit consists of a filter circuit, a sampling circuit and a GPS timing circuit. The monitoring method provided by the invention applies unified time labels on the acquired transformer parameters through the GPS timing circuit of each electric network transformer monitoring device, transmits the monitored transformer parameters to an electric network dispatching center, judges and positions the internal faults of each transformer winding in the electric network, carries out the voltage stability analysis of the whole electric network according to the state of each transformer at the same time, reliably guarantees the safe and stable operation of local electric networks, and realizes the real-time monitoring of the wide-area electric network.

The invention discloses a fault diagnosis method for a rolling bearing. The method comprises the following steps that 1, the fault feature frequency of the rolling bearing is calculated; 2, an acceleration signal, to be detected, of the rolling bearing is obtained; 3, Hilbert transform is carried out on the acceleration signal to be detected, and a Hilbert envelope demodulation signal is calculated; 4, stochastic resonance treatment based on standard transform is carried out on the Hilbert envelope demodulation signal, and a carrier frequency and an output signal are obtained; 5, fast Fourier transform is carried out on the output signal to obtain an output signal frequency spectrum peak value, and the feature frequency of the acceleration signal to be detected is obtained according to the carrier frequency parameter and the output signal frequency spectrum peak value; 6, the feature frequency of the acceleration signal to be detected is compared with the fault feature frequency, and a diagnosis result is obtained. By means of the method, the fault of the rolling bearing can be diagnosed and recognized, and particularly, the early fault of the rolling bearing in the strong-noise background can be diagnosed and recognized.

The invention relates to a driving structure of a robot platform, comprising at least three groups of wheels arranged on a chassis of the platform; each group of wheels are symmetrically arranged at the two sides of the chassis of the platform, wherein, at least one group is driving wheels, and at least one group is steering wheels; the wheel shafts of the wheels at the same side of the front two groups of wheels of the chassis of the platform are connected with a rocker arm which can rotate in a plane that is vertical to the wheel shaft. The invention also discloses a platform control device. A control device also comprises a system monitoring module which can monitor the operation condition of the robot platform in real time; the system monitoring module can provide the information of the operation condition of the robot platform in real time; when the unpredictable problem occurs in the system can not be solved, the system monitoring module can inform the user to get involved. The invention improves the driving structure and the platform control device of the robot platform, thus ensuring the safety performance of the robot.

The invention discloses a biological treatment system of sludge odor and a method for treating the sludge odor by utilizing the same, relating to the field of solid waste treatment. The biological treatment system of the sludge odor comprises an odor collector, an odor fan, an intake pipe, a biological deodorization tower, an outlet pipe, an active carbon adsorption device, a gas monitor and a discharge pipe. The method for treating the sludge odor by utilizing the biological treatment system comprises the following steps of: (1) injecting a bacterial solution enriched with thiobacillus denitrificans and nitrobacteria, acclimatizing for three weeks to finish starting; and (2) charging odor into the biological treatment system for treating through the odor fan. According to the biological treatment system of the sludge odor and the method for treating the sludge odor by utilizing the same, disclosed by the invention, main components of the sludge odor are removed by utilizing thiobacillus denitrificans and nitrobacteria, soft-hard bilayer fillers are adopted and active carbon is adopted for the following adsorption, thus the treatment effect is ensured; in addition, the biological treatment system of the sludge odor and the method for treating the sludge odor by utilizing the same, disclosed by the invention, have the advantages of low energy consumption and operation cost, and high safety and reliability, and is suitable for odor treatment of a large / middle sludge treatment project.

The invention discloses a remote automatic real-time bridge monitoring system and method based on an MEMS technology. The system comprises an MEMS inclination angle sensor, an MEMS accelerometer, a transmission network and a data center, the MEMS inclination angle sensor monitors inclination of bridge members so as to obtain the static flexibility of a bridge under a load effect, the MEMS accelerometer monitors the acceleration so as to obtain a dynamic flexibility function and the natural vibration frequency of the bridge, the MEMS inclination angle sensor and the MEMS accelerometer send monitored bridge data to the data center via the transmission network, and the data center analyzes and processes the bridge data, and evaluates the health condition of the bridge. According to the monitoring system and method, the static flexibility and dynamic flexibility of the bridge floor as well as the gradients of bridge tower, floor and piers can be fit and measured, the health state of the bridge can be evaluated according to power response of the bridge, and important basis is provided for diagnosis on bridge damage and timely maintenance.

The invention discloses an electromagnetic vibration generating device of a permanent magnet and application thereof in a vibration detection system, and relates to a device for recycling energy from mechanical vibration to realize energy utilization. The electromagnetic vibration generating device of the permanent magnet is composed of two outer cylinder end covers, a columnar hollow shaft, an inner side coil, a columnar inner cylinder, two fixed annular permanent magnets, a moving annular permanent magnet, a columnar outer cylinder and an outer side coil. According to the invention, the shortcomings that the existing vibration generating device only can collect the vibration energy in the vertical direction and the energy conversion efficiency from the vibration energy to electric energy is relatively low are overcome; the electromagnetic vibration generating device of the permanent magnet is used as a unique power supply of the vibration detection system so that the vibration detection system becomes a self-powered vibration detection system; and the self-powered vibration detection system is combined with a voltage doubling circuit, a wireless transmitting module, a wireless receiving module, a single-chip module and a personal computer, thus the inconvenience of arranging a power supply and a lead outside the traditional vibration detection device is overcome, and a worker can master the vibration conditions without arriving at the site.

The invention relates to an intelligent car rental management system based on a Bluetooth technology. The intelligent car rental management system comprises a client terminal, vehicle-mounted terminals and a remote server. The vehicle-mounted terminals are installed in each vehicle and receive vehicle information transmitted by corresponding vehicles through vehicle bus communication interfaces, and the vehicle-mounted terminals receive car rental secret key information and client information transmitted by the client terminal through Bluetooth communication interfaces and transmit the client information and vehicle information to the remote server through network communication interfaces. The invention further relates to a method for achieving intelligent car rental management on the basis of the Bluetooth technology. By means of the intelligent car rental management system and method based on the Bluetooth technology, car rental information can be obtained in real time, car rental procedures can be reduced, user experience is improved, vehicle operation condition can be monitored in real time through the remote server, management on vehicles can be performed better, and the system is simple in structure and has wide application range.

The invention is suitable for the technical fields of air conditioning and provides an air outgoing head shaking device of a wide-angle air conditioner. The device comprises a driving part controlled by a central controller of the air conditioner, a head shaking part driven to rotate by the driving part and provided with an air outlet, a photoelectric switch used for detecting whether the head shaking part is at an initial position or not, and an air outgoing fixed retaining block, and the photoelectric switch is electrically connected with the central controller; a blocking element driven to rotate by the head shaking part and used for blocking optical signal reflection of the photoelectric switch is arranged on the head shaking part, a Hall element capable of outputting pulse signals is arranged on the driving part, and an air outlet moving retaining block capable of rotating along with the head shaking part and used for being matched with the fixed retaining block is arranged on the head shaking part. Consequently, the problem of long initialization time of a conventional wide-angle air conditioner due to the fact that an air outlet or a swing fan blade of the conventional wide-angle air conditioner is large in rotating angle is solved, and running condition of the head shaking part can be monitored in real time. The invention further provides a wide-angle conditioner with the device.

The invention relates to the elevator intellectualization technology, and particularly discloses an intelligent elevator rescue monitoring and awesome media platform, which solves the problem that the existing elevator is out-dated in a maintenance work mode when in use, poor in safety accident emergency rescue capability, lack of elevator public media information dynamic publishing function and out-dated in an elevator supervision mode. The intelligent elevator rescue monitoring and awesome media platform comprises an elevator, an elevator instrumented intelligent media device, an intelligent maintenance cloud terminal, an intelligent elevator system, a wireless communication network, a data center and a PC (Personal Computer) log-in management system. The elevator instrumented intelligent media device is mounted in an elevator car; the elevator instrumented intelligent media device, the intelligent maintenance cloud terminal and the intelligent elevator system are all connected with the wireless communication network; the data center is connected with the elevator instrumented intelligent media device; and the PC log-in management system is connected with the intelligent elevator system. The intelligent elevator rescue monitoring and awesome media platform is based on brand-new technology architecture, and is suitable for various elevators.

A system for positioning power distribution network terminal failures comprises a primary transformer, secondary transformers subordinate to the primary transformer, a data acquisition unit, a data processing unit, a central information processing unit and a wireless communication unit. A method for positioning the power distribution network terminal failures includes the specific steps: 1) acquiring voltage and current values of the primary transformer; 2) judging whether fluctuations of the acquired voltage and current values exceed preset threshold values or not; 3) sending alarm information of the primary transformer to a monitoring center computer, wherein the alarm information comprises a physical address of the primary transformer; and 4) positioning failure positions of the secondary transformers subordinate to the primary transformer and branches, and sending the failure positions to the monitoring center computer. Operation states of power distribution network terminals can be monitored timely and effectively and sent to a monitoring center in real time, and thereby the system and the method can be widely applied to increasingly complex power distribution networks to shorten failure time and reduce economic losses caused by the failures.

The invention provides a DCS information safety control method and control station. A control engine and a safety engine are arranged in the control station. The control engine controls computation execution of a configuration algorithm, equipment IO processing, and communication management between the control engine and a host computer and between the control engine and the control station. The safety engine takes charge of the safety detection and defense of the control engine, including access object safety monitoring of the control station, communication data accuracy verification, and control engine execution state detection. When a protective switch of the control station is activated, it requires the detection and the verification of the safety engine for the host computer to send any data or operation access request, and the safety engine feeds detection results of abnormal data and abnormal operation back to the host computer, and gives a real-time alarm about an abnormal case. The DCS information safety control method may solve technical problems that an industrial control system control station is usually attacked by threat such as a virus or the like and an operation fault of the control station is difficult to diagnose in a visualized manner.

The invention discloses an automatic oil spraying device which comprises a closed oil spraying room, a fog spraying system, an oil recycling system and a control system. The fog spraying system comprises a main air source, a pressurizing mechanism, an oil drum, an electromagnetic valve and fog spraying valves, wherein the main air source is connected with the pressurizing mechanism, and the oil drum, the pressurizing mechanism and the fog spraying valves are sequentially connected through oil pipes. The electromagnetic valve comprises an air inlet, a first air outlet and a second air outlet, wherein the air inlet is connected with the main air source through a pipe, the first air outlet is connected with the fog spraying valves through a driving air source pipe, and the second air outlet is connected with the fog spraying valves through an atomization air source pipe. The driving air source pipe and the atomization air source pipe are provided with a first pressure adjustment mechanism and a second pressure adjustment mechanism respectively. The electromagnetic valve and the oil recycling system are respectively connected with the control system, and the oil recycling system is connected with the closed oil spraying room. The invention further discloses an automatic oil spraying method achieved through the automatic oil spraying device. By means of the automatic oil spraying device and the automatic oil spraying method, rapid and safe rust prevention processing on a large number of plates can be achieved, operation risks to persons are reduced, and waste oil can be recycled.

The invention discloses a device and a system for monitoring a cable conduit. The device for monitoring the cable conduit comprises a data collection module, a collection terminal and a database, wherein the data collection module is used for collecting field data for terminal equipment in the cable conduit and sending the field data to the collection terminal; the collection terminal is used for sending the field data into the database; the database is used for storing the field data. By setting the data collection module and obtaining the field data in the cable conduit in time, the device for monitoring the cable conduit is used for achieving a good predictive effect for the environment inside the cable conduit and the running state of a cable line and storing the field data into the database to facilitate searching. The invention further provides a system for monitoring the cable conduit, and online real-time monitoring for the running state of the cable line inside the cable conduit is realized.

The invention discloses a disassembly and assembly moving intelligent type driver stake-examination device, which comprises a simulated garage stake component consisting of a stake frame, a stake rod and a garbage line, detecting devices respectively monitoring the moving track of an examination car, the rod knocking, line pressing and exceeding of the examination car, and the flameout of an engine, a detection data collector and a computer conducting collecting treatment on the detection data; while the simulated garage stake component is an assembly stake-examination component which is convenient to be carried and formed by the garbage line prepared by a movable assembly type stake frame, a movable assembly type stake rod, a stake rod magnetic-absorption locating seat and a line belt or a gluing belt. The detection data collector is a digital signal treatment wireless transmitter / receiver; wherein the digital signal processing wireless emitter is connected with each detecting device; and the digital signal processing wireless receiver is connected with the computer. The device integrates the advantages of intelligence, removability and adjustability, is flexible and convenient to be used, has simple and reliable structure and less investment, and is suitable for traffic and farm machinery management departments to carry out stake-examination services for various drivers particularly.

The invention discloses an intelligent monitoring and management system of wind-solar complementary power supply street lamps. The system is used for monitoring and managing at least two groups of street lamps, and comprises a monitoring center and a number of monitoring subnets which are used for delivering the real-time operation condition information of the street lamps to the monitoring center. The monitoring center and the monitoring subnets carry out data transmission through a GPRS network. Each monitoring subnet comprises a monitoring main node which is used for monitoring on-site subnet management and monitoring center communication, and a number of monitoring auxiliary nodes which are used for monitoring the operation condition of the street lamps and delivering measured on-site data to the monitoring main node. The monitoring main node and the monitoring auxiliary nodes carry out da ta transmission through a wireless sensor network.

The invention discloses a system and method for remotely monitoring a tobacco sheet production line. The system comprises a data monitoring layer, a data transmission layer and a data collecting layer. The data monitoring layer and the data transmission layer are in bidirectional communication. The data transmission layer and the data collecting layer are in bidirectional communication. The data monitoring layer comprises a server. The server is respectively connected with a warning device, a printer and a UPS. The data transmission layer comprises a GPRS main module. The GPRS main module is communicated with an air compression station GPRS auxiliary module and a heat supply station GPRS auxiliary module in two directions. The GPRS main module is further communicated with the server in two directions. The data collecting layer comprises an AD data collector, a serial port collector, a current sensor, a pressure sensor, a temperature sensor and a flow totalizer. The system for remotely monitoring the tobacco sheet production line has the advantages of being low in maintenance cost, high in reliability, reasonable in expense and the like.

The invention discloses a direct current motor control teaching experiment system. The direct current motor control teaching experiment system includes an upper computer, a control processor and direct current motors; the upper computer automatically generates codes through MATLAB / Simulink model based design; the codes are downloaded to the control processor; the control processor transmits corresponding control signals to the direct current motors; the direct current motors are connected with detection sensors; the detection sensors return acquired detection signals to the control processor; the upper computer monitors the detection signals; the direct current motors include a first direct current motor and a second direct current motor which are connected with each other through a mechanical coupling transmission device; the mechanical coupling transmission device is connected with a baffle used for fixing the transmission shaft of the mechanical coupling transmission device; and the transmission shaft of the mechanical coupling transmission device is provided with a torque transducer connected with the control processor. The direct current motor control teaching experiment system of the invention has the advantages of simple operation and easiness in establishment and experiment verification. With the direct current motor control teaching experiment system adopted, a plurality of teaching experiment contents such as single-motor control and multi-motor control can be realized.

The invention provides an OPGW online monitoring and diagnosing system. By means of the system, currents of an OPGW can be measured under normal and short-circuit conditions, and whether the OPGW operates normally or not can be diagnosed through actually-measured data. The system is composed of a terminal, a collector and a master station. The terminal is arranged on the OPGW, and the currents of the OPGW are measured by means of the electromagnetic induction principle. The collector is arranged on an overhead wire structure, receives data of the terminal, and uploads the data to the master station. The collector comprises a radio frequency communication module and a GPRS module. The master station is arranged inside a transformer substation or a dispatching center and provided with a mobile communication module, and the mobile communication module is used for receiving the data of the collector, monitoring the currents and temperature of the OPGW, and analyzing the operation state of the OPGW. The OPGW online monitoring and diagnosing system has the mature technology and is high in reliability.

The application relates to the field of intelligent transport, and especially relates to a center system based on an intelligent transport cloud control system in order to solve the problem that the center system in the prior art is stressed and has low running rate. The intelligent transport cloud control system provided by an embodiment of the application at least comprises a center system, a plurality of control servers, and a plurality of field devices. The center system and the control servers are connected via a network. The field devices and the control servers are connected by a broadband bus based on an IP address. The center system is used for collecting data in one or more of the following data collection modes: monitoring the status data of the control servers in real time; querying data from the control servers in a non real-time manner; and subscribing to the data of the control servers as needed. According to the embodiment, the center system can acquire data from the control servers selectively, so that the pressure on the center system is eased, and the running rate is improved.

Provided is an on-line monitoring and fault diagnosis system for a power distribution network PT. The system can be used for measuring three phase currents, three phase voltages, three line voltages and zero sequence voltage data of the power distribution network PT. Whether the system has a single-phase grounding fault, a ferromagnetic resonance fault and a PT line breakage fault can be accurately judged through actually-measured data. The system is composed of a current measurement terminal, a collector and a background server. The current measurement terminal is arranged on a three-phase line of the power distribution network PT, and the three phase currents of the power distribution network PT are measured according to the electromagnetic induction principle. The collector is arranged on a panel of a PT cabinet, receives data of the terminal, meanwhile, measures the phase voltages, the line voltages and a zero sequence voltage of the PT, and uploads the data to the background server. The background server is arranged inside a transformer substation, receives the data of the collector, and conducts on-line monitoring and fault diagnosis on the power distribution network PT. According to the on-line monitoring and fault diagnosis system for the power distribution network PT, technology is mature, and reliability is high.

The invention discloses a remote and local video monitoring vehicle-mounted device for a construction machine, mainly comprising a microcontroller based on a Linux system, a data acquisition input unit, an LCD (liquid crystal display) man-machine interaction interface, a 3G wireless communication module and a data storage device, which are connected with the microcontroller. The data acquisition input unit is responsible for acquiring working conditions and video data of the construction machine; the microcontroller processes the acquired data and outputs the acquired data to the man-machine interaction interface to be displayed, and the local video monitoring is realized; and the 3G wireless communication module establishes wireless connection with a remote monitoring center through TCP (transport control protocol) / UDP (user datagram protocol) network protocol and transmits large data volume such as video by adopting the hybrid mode of WCDMA (wideband code division multiple access) / GPRS (general packet radio service), so as to realize remote video monitoring. The remote and local video monitoring vehicle-mounted device for the construction machine has high level of integration and can realize remote and local video monitoring; meanwhile, a human face detection function is introduced to the local video monitoring and can carry out human face recognition on staff in the working range, an alarm signal can be transmitted initiatively, and the accident rate is reduced.

The invention provides a wind driven generator blade detection device which comprises an acoustic emission detection device and a data analysis device, wherein the acoustic emission detection device comprises an acoustic emission source, an acoustic emission sensor, a signal conditioning circuit, a digital encoding circuit and a wireless fidelity (WiFi) emitter; the data analysis device comprises a WiFi receiver, an acoustic emission signal acquisition card signal acquisition processing system and a display system. The acoustic emission source is used for transmitting elastic waves to wind driven generator blades to be detected; the acoustic emission sensor is used for detecting mechanical vibration of the wind driven generator blades to be detected caused by the elastic waves, generating an electric signal which expresses the mechanical vibration and transmitting the electric signal to the signal conditioning circuit; the signal conditioning circuit is used for performing digital signal processing on the electric signal.

The invention discloses a fault diagnosis method for on-line monitoring equipment of a transmission line, comprising the following steps: (1) obtaining a fault code uploaded by the on-line monitoringequipment; (2) adopting 3 delta criterion to process the acquired fault code, retaining the fault code belonging to random error and eliminating the fault code containing gross error; (3) adopting thefault code obtained in the last step of the V system to code to obtain the eigenvalues of the set of fault codes, and establishing a fault information database according to the extracted eigenvalues;(4) the neural network self-learning training is carried out to the fault information obtained in the previous step, and the trend is predicted; (5) Comparing the eigenvalues of the V system of the predicted data, the diagnostic results are given; The invention realizes multiple data processing and accurate diagnosis of fault data uploaded by the on-line monitoring equipment, is flexible and changeable in control, is convenient for monitoring personnel to discover fault points in time and carry out maintenance, and improves the efficiency of operation and maintenance work.

The invention discloses a metering box used for low-voltage distributed type photovoltaic power generation. The metering box comprises a box body, and a generation power meter, a gate meter and a power information acquiring terminal connected with the generation power meter and the gate meter are arranged in the box body. A terminal of the generation power meter is connected with an inverter of photovoltaic power generation through a first switch device, a terminal of the gate meter is connected with a load switch device through a second switch device, and the other terminals of the generation power meter and the gate meter are connected with a load through a third switch device. Power generation, grid connection, offline metering and control devices are all packaged in the same box body, so that the metering box has an automatic stealing-preventing control performance thoroughly.

The invention discloses a light curtain recognizing and painting machine and a planting method thereof, and belongs to the field of automatic spray coating. The device comprises a light curtain detecting device, a PLC, a spray coating mechanism, a transmission mechanism and a coded disc, wherein the light curtain detecting device comprises an emitter which is mounted above the transmission mechanism, and a receiver which is mounted below the transmission mechanism; the receiver and the emitter are positioned at the upstream of the transmission mechanism; the spray coating mechanism is mounted above the transmission mechanism and located at the downstream of the transmission mechanism; the coded disc is mounted on the transmission mechanism; the emitter, the receiver, the spray coating mechanism and the coded disc are correspondingly electrically connected to the PLC. According to the light curtain recognizing and painting method, the plane appearance data of a workpiece are obtained through the light curtain detecting device and the coded disc and are transmitted into the PLC to be handled; the spray coating mechanism is controlled by the PLC to accurately spray and coat the workpiece, thus realizing the accurate spraying coating of the workpiece; the painting efficiency is increased; the paint waste is decreased; and the cost can be greatly saved.

The invention provides an online monitoring device and a monitoring method of multipoint earthing of an iron core of a transformer. The device comprises a current transformer, an ammeter and an adjustable resistor, which are installed in a housing. The ammeter is series-connected on the secondary side of the current transformer. The ammeter range has double-layer scales. The adjustable resistor isseries-connected on the secondary side of the ammeter. The device is series-connected in an earthing wire of the iron core and the housing of the device is singly earthed. When the iron core is earthed in multipoint, the adjustable resistor is adjusted according to the earthing current, the current flowing through the iron core is controlled and the indicated number on the ammeter is observed toenable the current to reach the value displayed when the transformer runs normally. The invention has the effects of enjoying simple structure, convenient installation, simple method and accurate andreliable monitoring, being capable of timely and accurately monitoring the running state of the iron core of the transformer in real time, achieving the aim of protecting the transformer and manufacturing the device into integrated structure so that the device is both practical and beautiful.

The invention relates to a wind power generator fault diagnosis system which is composed of multiple temperature sensors and piezoelectric acceleration sensors, a Zigbee communication module, a server, a wireless network, a fault diagnosis system, a personal computer, a tablet computer, an intelligent mobile phone and a photovoltaic power generation device. The wind power generator fault diagnosis system is characterized in that the multiple temperature sensors and the piezoelectric acceleration sensors are installed at important parts of a wind power generator, such as a bearing, a gear and a shaft, so as to perform data acquisition. The acquired data are transmitted to the server via the Zigbee communication module. The server is installed on the ground near the wind power generator. Data information is transmitted to the fault diagnosis system by the server via the wireless network. A data information analysis result is transmitted to the related personal computer, the tablet computer and the intelligent mobile phone in real time by the fault diagnosis system. With application of the aforementioned technical scheme, the operation state of the wind power generator can be monitored in real time and a fault can be discovered timely.

The invention relates to an online detection system and an online detection method for an isolating switch. The system comprises a motor operating mechanism, the isolating switch and an online detection device, wherein the motor operating mechanism comprises a motor; the online detection device comprises a detection module, a conversion module, a switch and a centralized control terminal; the detection module is used for acquiring detection analog signals of the motor operating mechanism and the isolating switch; the detection analog signals comprise a temperature analog signal, a displacement analog signal and a switching value analog signal of the isolating switch and a current analog signal of the motor; the conversion module is used for finally converting the detection analog signals into detection optical signals and transmitting the detection optical signals to the centralized control terminal; and the centralized control terminal carries out centralized control on the received detection optical signals. The system and the method of the invention meet the intelligent power grid construction requirements by the state grid, and the safety, the reliability and the anti-interference performance are good.

The invention discloses a method for measuring the input impedance of a traction pulse rectifier and the output impedance of a traction network. A high-speed train single-phase traction rectifier is taken as a measurement object, a disturbance injection device for the real-time closed-loop regulation of a disturbance harmonic amplitude according to the stable operation condition of the rectifier is designed, and the device can accurately measure impedance / admittance under a train network dq coordinate system on the premise of ensuring stable operation of the rectifier. On the premise of stableoperation of a traction alternating-current transmission two-level single-phase four-quadrant pulse rectifier, the impedance of the rectifier and traction network are accurately measured.