247results about How to "Avoid major losses" patented technology

The invention discloses a vehicle avoidance method including the following steps that when a special vehicle performs a task, early warning information is sent to a remote server and includes the position information and avoidance requests of the special vehicle; the remote server broadcasts the early warning information to other vehicles; and the other vehicles send early warning based on the avoidance requests and take corresponding avoidance measures based on the position information of the vehicle. The vehicle avoidance method and avoidance system are advantageous in that the avoidance request signals of the special vehicle are sent to social vehicles in advance, so that the social vehicles ahead the special vehicle can receive the avoidance request signals in advance to take the avoidance measures such as lane change and deceleration to prevent the special vehicle from being jammed on the way to miss the emergency treatment opportunities and cause huge losses.

The invention discloses a network intrusion identification method based on anomaly flow and a black-white list library of an IP terminal. The network intrusion identification method includes the steps that a flow preset threshold is set for early warning with a base line analysis method, anomaly flow features are extracted for early warning, the black-white list library is built, early warning is carried out when a server is accessed by a non-white-list IP, and in the monitoring process, a flow analysis library, an anomaly flow feature library and the black-white list library are continuously updated and perfected. When network intrusion to the electric system server is processed with the network intrusion identification method, an alarm can be given in time, a network operation and maintenance person can be reminded to carry out attention and processing in time, and big losses, caused by system crash and network complete paralysis which are caused by network intrusion, of a power grid can be avoided.

The invention provides an IGBT health state monitoring method based on a leakage current of a collector electrode. The method comprises the steps that after installation and debugging and before usage, an IGBT module passing detection is utilized for testing the leakage current of the collector electrode under certain conditions, and the leakage current of the collector electrode is recorded as an initial value; the leakage current of the collector electrode of the IGBT device is tested regularly and is recorded as a testing value; the testing value is taken into a collector electrode leakage current health state monitoring method simulation model, the fatigued aging process and the residual life of the IGBT device can be calculated, and the purpose of monitoring the IGBT health state is achieved; and when the deviation degree of the leakage current of the collector electrode reaches a failure standard, the device is determined to be invalid, at the moment, the IGBT device needs to be changed, and the above steps are repeated. By original state calibration and real-time monitoring, the health state and the reliability of the IGBT device in different life stages can be effectively estimated.

The invention relates to a method and a device for adhesion detection of a main contact of an alternating-current contactor to solve the problem that the main contact fails to disconnect in abnormality of the contactor. The device comprises an alternating-current contactor major loop, an alternating-current contactor control loop, an adhesion signal detection circuit and a master controller control circuit. The adhesion detection circuit takes signals from the lower end of the alternating-current contactor, an intermediate relay of the contactor control loop and an alternating-current contactor auxiliary contact. The adhesion detection circuit adopts passive output for outputting signals in an open-collector output mode, and the master controller control circuit takes a PLC (programmable logic controller) or MCU (micro controller unit) as the core and is capable of driving the intermediate relay to realize control of the alternating-current contactor and a forestage power source thereof. The device has the advantages of simple structure and stability and reliability in operation, various operating states of the alternating-current contactor can be detected in real time, fault signals are given out immediately once adhesion occurs, and the forestage power source is disconnected through the master controller to guarantee safety of field personnel and property.

A remote intellectual monitoring and rescue processing system and a monitoring rescue processing method for personnel security are disclosed. The system comprises a wireless network, an internet, designated telephones and computers, a detector for monitoring behaviors information of a person under guardianship, a hardware processing program and a remote computer processing program. The behaviors information of the person under guardianship is detected by the detector, is processed by the hardware processing program and is fed back to the wireless network. The wireless network feeds back the information to designated telephones, remote computers and the internet. The remote computer processing program feeds back the processed information to the wireless network and the internet connected with computers. A satellite-location signal receiving process electrocircuit, a personnel moving and falling detection circuit, a human temperature detection circuit, a wireless network communicating unit, a central data-handling unit, a data memory unit and a power source management electrocircuit are arranged on the detector for monitoring behaviors information of the person under guardianship. The system is used for monitoring and rescuing for the person under guardianship.

The invention relates to an intelligent patrol machine car. The intelligent patrol machine car comprises a car with road wheels and a motor, a control system which is arranged on the car, and a photoelectric track detector which is arranged on the car; the control system comprises a motor drive module, a track sampling and logic control module, a communication module, an infrared obstacle avoidance module and a temperature and humidity detection module; and the car communicates with an upper computer detection system by the communication module. The machine car has the advantages of being applied to fire protection and mould prevention of gain depots and all-weather monitoring, and avoiding labor consumption and fire resulting from negligence of staff. The car can automatically avoid obstacles and search routes, eliminates potential hazards, and judge whether the grain goes moldy according to the ambient humidity. Meanwhile, the car can also go to a plurality of hazardous environments to which human can not reach, and transmit the information acquired by a transducer to a computer which processes and displays the information by the communication module.

The invention discloses an IGBT online state monitoring method and measuring system based on Miller platform delay. One end of a drive signal pre-processing circuit is connected with one end of a controller through a time measuring circuit. The other end of the controller and the drive chip of an IGBT device drive circuit are connected. The drive chip is divided into two paths. One is connected with an IGBT device, and the other is connected with the drive signal pre-processing circuit. The drive signal pre-processing circuit extracts the Miller platform delay in a drive voltage signal of an IGBT turn-on process as the characteristic parameter of IGBT state monitoring to carry out initial state calibration and real-time online monitoring. The health and reliability of the IGBT device during an aging process are evaluated. According to the invention, online monitoring and parameter extraction do not affect the operation of a main circuit, and are sensitive to various typical failure modes; and the method and the system can be directly used for health monitoring and service life evaluation of the IGBT, and solve the problem of lack of effective characteristic parameters in the existing state monitoring technology of power electronic devices.

An antitheft alarm system for the oil or gas delivery pipeline is composed of a central station and several terminal stations. Said central station consists of display screen, computer, sound-light alarm, interface, radio data transmission module, printer, UPS, and stabilized DC power supply. Said terminal station is composed of audio sensor, amplifier, signal processor, A / D converter, single-chip computer, interface, radio data transmission module, solar battery, etc. It can sense the theft in time to generate audio-video alarm signals, preventing pipeline from being damaged.

The invention discloses a wood damage monitoring method based on an acoustic emission technique. The method specifically comprises the following steps: arranging an acoustic emission sensor on the surface of a wood stress concentration part; collecting weak acoustic emission signals generated by wood damages; amplifying and filtering the collected acoustic emission signals, carrying out analogue-to-digital conversion, and then transmitting the converted signal to an FIFO in an FPGA control module and buffering; uploading data to an upper computer through a wireless transmission module; carrying out wavelet noise reduction and reconstitution on the collected acoustic emission signals collected by the upper computer; positioning a wood-damage acoustic emission source by a linear positioning method, and monitoring the position of the wood-damage acoustic emission source in real time through a human-computer interaction interface designed by LABVIEW; and extracting energy characteristic values form the collected acoustic emission signals by the upper computer by virtue of a wavelet packet analysis system, constructing a corresponding training sample set, building a neural network, and predicting and analyzing the variation trend of the acoustic emission signals of wood stress damages through accumulated energy so as to deduce the positions of the wood damages.

The invention provides a system and method for monitoring environmental parameters of a wireless communication electric power transmission line, and belongs to the field of network communication and electrical technologies. The system comprises a management terminal master station, an electric power line detection device and a wireless communication device. The electric power line detection device comprises a solar power supply unit, a sensor unit and a central processing unit. The sensor unit comprises a temperature and humidity sensor, a barometric pressure sensor, a wind velocity sensor, a tension sensor and a voltage sensor. The electric power line detection device is in wireless communication with the management terminal master station through the wireless communication device. The system has the advantages that temperature, humidity, wind velocity, barometric pressure and other meteorological factors and the tension of the line are monitored in real time, various collected climate parameters and the change state of the climate parameters are transmitted to an information center in real time, the micro-meteorological environment of a specific transmission line corridor is accurately reflected, manual inspection intensity is reduced, equipment operation real-time information efficiency is improved, and the system brings convenience to fault judgment, prevention and study of the transmission line.

The invention discloses a method of testing stability of an Ethernet exchanger, including: 1, connecting all the ports of a sample machine to a flux generator; 2, setting port mode as self-adapting, closing flow control function, to make all the ports in a default state; 3, setting port speed of the generator as line speed and frame length random; also including: at least one of full-load testing, flux impact testing, sustained operation testing, limit testing and environmental stress testing, combined in arbitrary sequence to completely test stability of the Ethernet exchanger. Compared with existing techniques, it has broad covering area, high efficiency, remarkable effect and high resources utilization, achieves testing purpose, saves testing time and expenses, and enhance success rate of testing, and avoids heavy losses of users and product suppliers.

The invention discloses a remote fire-fighting monitoring management method and system based on a household internet of things gateway, wherein the method comprises the steps that environmental parameter data of a household environment are monitored in real time based on a household internet of things terminal monitoring device, and are transmitted to the household internet-of-things gateway; thehousehold internet-of-things gateway uploads the real-time environment parameter data to a cloud server, and the cloud server issues fire-fighting types and fire-fighting grade parameters to the household internet-of-things gateway; the household internet of things gateway analyzes the change rate of the real-time environment parameter data, and determines whether the change rate reaches a corresponding alarm level or not; if the change rate reaches the corresponding alarm level, a gateway processing plan is started, and the alarm level is uploaded to the cloud server; and the cloud server isused for rechecking the uploaded alarm grades and pushing fire-fighting early warning to a corresponding management user. In the embodiment of the invention, the real-time monitoring of the fire-fighting of the household environment state is realized, so that major loss caused by fire hazards in a family and a residential area is avoided.

The invention relates to a method and a device for detecting gas content of a mixed fluid under a while drilling condition. The method comprises the steps of: exciting through an electric signal to generate an ultrasonic surface wave; receiving the ultrasonic surface wave; obtaining amplitude information of the received ultrasonic surface wave; and obtaining the gas content information of the mixed fluid according to the amplitude information. According to the invention, the gas content of fluids in wells can be correctly and quantitatively measured in real time, the underground geological conditions can be known, the information of oil and gas layers can be discovered in time and the wastes of oil and gas resources can be avoided; and the method and the device can be used for recognizing overpressure stratums and treatment can be carried out in time when overpressure stratums are drilled, so that the occurrences of well kick and well blowout are prevented, the heavy losses of personal lives and properties are avoided, and reference information can be provided for the drilling track regulation in the drilling process.

The invention relates to a unified power quality control device employing a resonant electronic switch, and belongs to the technical field of power electronics and flexible alternating current transmission and distribution. The device comprises the resonant electronic switch, a voltage source converter, an energy storage unit and a master control system, wherein the master control system consists of a master controller and a plurality of sensors; the resonant electronic switch comprises a group of inductors Lr1 and Lr2, a group of capacitors Cr1 and Cr2 and a group of bidirectional thyristors T1; a branch formed by connecting the bidirectional thyristors T1 in series with the inductor Lr2 and the capacitor Cr1 is connected in parallel with the inductor Lr1; and a parallel branch formed by Lr1, Lr2, Cr1 and T1 is connected in series with the capacitor Cr2. A method comprises the steps of judging various power quality faults and controlling the device to quickly switch and operate among four modes. The device has the advantages of simple structure, low cost, high overload resistance and high operation efficiency.

The invention discloses a remote radio system which can ensure the normal work of a communication system when a proximal machine fails and a proximal device thereof. The remote radio system comprises the proximal device and a remote device, wherein the proximal device comprises a main proximal machine, a backup proximal machine and a switching control machine; the switching control machine comprises a switching unit and a monitoring unit which are mutually connected; signal channels of the main proximal machine, the backup proximal machine and the remote machine are respectively connected with the switching unit of the switching control machine; and the monitoring unit of the switching control machine is connected with the main proximal machine, is used for monitoring whether the main proximal machine fails, and controlling the switching unit to switch a route of communication signals to a signal link between the backup proximal machine and the remote machine from the signal link between the main proximal machine and the remote machine.

A graft method of chestnut tree includes such steps as pruning stock tree, choosing the graft position, removing useless twigs, applying fertilizer, choosing dwarf tree as scion tree, storing the scion in cellar, and grafting when the length of new bud of stock tree is 7 mm.

The invention provides a judgment method and system for electronic contract signing time accuracy. According to the method, according to the characteristic that data in a block chain network cannot betampered, transfer operation is initiated in the block chain network, a real digital signature of an electronic contract is written into a transaction remark of the transfer operation, an obtained first digital signature is utilized to be compared with the real digital signature, signing time is compared with transaction time information of the transfer operation, and if the signing time and thetransaction time are different, it is determined that the signing time of the contract is tampered by someone, that is, the signing time is wrong. Through the judgment method and system, it is convenient to timely judge whether the signing time of the electronic contract is accurate, the signing time of the electronic contract is further determined as the transaction time, and a heavy loss is avoided for a signer of the electronic contract.

The invention discloses a wireless monitoring system for refrigerator temperature based on Zigbee. The wireless monitoring system comprises a control module, a radio frequency module, a display module and data acquisition modules arranged on all refrigerates. Each data acquisition module comprises a single chip microcomputer, a wireless communication module and multiple measuring nodes distributed in the refrigerators. Each measuring node comprises a microcontroller, a temperature sensor and a power unit. Each temperature sensor is used for acquisition of temperature information and transmitting the temperature information to each microcontroller. Each microcontroller is used for sending received temperature information to each single chip microcomputer. Each single chip microcomputer is used for transmitting received temperature information and position information corresponding to each measuring node to the control module. The control module is used for displaying received information and informing a worker of abnormal information by means of the radio frequency module in a text message form. The wireless monitoring system for refrigerator temperature based on Zigbee has following beneficial effects: the wireless monitoring system has a simple structure and is used conveniently and not only capable of conveniently monitoring the multiple refrigerators but also capable of actively informing the worker of abnormal information so that great practical value is obtained.

The invention relates to a device for resisting and controlling pathogenicity Avian Influenza Virus, and relative application. Wherein, it based on the character and transmission path of causal agent, uses high temperature to disinfect the causal agent of air, and baffle the transmission path, to resist and control the Avian Influenza Virus transmission. It comprises that heating the air into chicken coop to 70Deg. C, using the circulated spray device formed by water pump, tube, ejector, spray room and liquid storage device to disinfect with chicken coop; reducing the temperature to room temperature, and dedusting, using dehumidifying network to keep the humidity at 60%; entering the sterilize air into the chicken coop sealed by films. The invention has simple process, automatic process, and saved energy, without pollution. And it can replace temperature insulator and temperature reducer, in winter and summer.

The invention relates to the field of fire fighting equipment, in particular to an intelligent fire hydrant. The intelligent fire hydrant comprises a valve, a tank body, a water pressure sensor, an integrated block, an emitter, a display, a display screen, a warner, a receiver, a water outlet and a water inlet. The fire hydrant is provided with the water pressure sensor and the integrated block for monitoring the water pressure thereof in real time, and timely sends out the water pressure data through the emitter to timely embody real-time data of each fire hydrant in a database; an alarm can be given if the abnormality occurs; managers can be timely notified to check and maintain through the emitter to prevent heavy loss caused by the condition of no water or lower water pressure of the fire hydrant during fire fighting; accidents are eliminated in sprouts; the harmony and the safety are brought to the society; the fire hydrant is more convenient and more humanized, and meanwhile, saves the manpower and material resources; meanwhile, the fire hydrant can be dismounted up and down; and a valve base can be additionally provided at the bottom of a traditional fire hydrant to realize modification of the traditional fire hydrant, so that the cost is saved.

The invention relates to a wood damage monitoring device based on an acoustic emission technique. The wood damage monitoring device comprises a wood damage signal acquisition system based on acoustic emission and an analysis and monitoring system; the wood damage signal acquisition system comprises an acoustic emission sensor, a pre-amplifier, a filter circuit, a main amplifying circuit, an analog-to-digital conversion circuit, an FPGA (Field Programmable Gate Array) control module and a wireless transmission module, wherein the acoustic emission sensor selects an ultrasonic wave sensor with the frequency of 60 Hz-400 KHz and the central frequency of 150 KHz; the analysis and monitoring system comprises a wood damage source positioning analysis module and an accumulative energy prediction analysis module, wherein the wood damage source positioning analysis module can carry out wavelet denoising and reconstruction on an acquired acoustic emission signal, then position an acoustic emission source by adopting a linear positioning method and display on a wood damage acoustic emission source positioning monitoring interface; the accumulative energy prediction analysis module is used for extracting energy characteristic values of the acoustic emission signal by applying wavelet packet analysis to construct a neural network and to realize the valid prediction of accumulative energy of the wood stress acoustic emission signal through predicting accumulative energy values, so that effective data is provided for monitoring, corresponding prevention measures are conveniently taken, and the loss caused by wood damage is avoided.

The invention provides a cascaded H bridge inverter and a fault handling method thereof. The fault handing method comprises the steps that a controller detects the output voltages or output powers of N solar cell panels; when the output voltage of the certain solar cell panel is less than a preset voltage or the output power of the same is less than a preset power, the controller controls a corresponding switching device to disconnect, and changes the corresponding direct current side capacitor voltage set value; and then the controller controls the corresponding H bridge module to invert by using the direct current side capacitor voltage set value as the input value, thus the total output modulated voltage of the cascaded H bridge inverter meets a preset condition, the system cannot operate normally and stably is avoided, it ensures that the undamaged solar cell panel can deliver energy to the power grid, and the heavy loss of the generated energy is avoided.

The invention discloses a network communication system, a fault control method and engineering mechanical equipment. The system comprises a plurality of nodes, wherein each node is used for sending a heartbeat message with a node identifier at a preset time interval and detecting the heartbeat messages from other nodes; and under the condition that the heartbeat message of one of the nodes is not detected in a preset time period or the detected heartbeat message of one of the nodes fails to indication, each node stops sending the data message and recovers an own control signal into a preset security locking state. According to the network communication system and the fault control method, after one of the nodes in the system fails, the network communication system is kept in a security locking state; and therefore heavy loss can be avoided.

The invention discloses a wireless intelligent monitoring and early-warning method and device for slope geological hazard based on acoustic emission. The method comprises the following steps: embedding an acoustic emission sensor in a slope, acquiring an acoustic emission signal at an early slope catastrophe stage by the acoustic emission sensor, and sending the acquired signal to a data receiver arranged at a safe position of a road in a wireless transmission mode; transmitting the signal to a data processing computer through a communication cable along the road by the data receiver; and analyzing and processing the signal and taking early-warning measures at a corresponding level according to the processing result by the data processing computer, and then transmitting early-warning information to an early-warning display screen at a hazard road section trough the communication cable so as to remind passing vehicles of taking the corresponding hazard reduction and prevention measures.

The invention discloses an automobile emergency automatic alarm system and method. The automobile emergency automatic alarm system comprises an automobile driving control unit, a gravity sensor and a relay, wherein the gravity sensor and the relay are connected with the automobile driving control unit. The relay is connected with an alarm device; the gravity sensor collects the acceleration change value of automobile driving in real time and sends the acceleration change value to the automobile driving control unit; the automobile driving control unit sends alarm control signals to the relay after determining that the acceleration change value is larger than a preset automobile acceleration change value; the relay reacts to the alarm control signals to start the alarm device to issue alarm. The automobile emergency automatic alarm system and method can send the alarm control signals to control the relay to start the alarm device to issue alarm when automobile speed jump or emergencies such as tyre burst, turnover and collision occur, so that automobiles at the back can timely find the conditions of ahead automobiles and further heavy losses can be avoided.

The invention discloses a method and a system for estimating the credibility of a simulation system. The method for estimating the credibility of the simulation system comprises the following steps of: 10, determining a real case set used for comparison estimation; 20, calculating the credibility of each case in the real case set; and 30, weighting the credibility of each case in the real case set, and thus obtaining the credibility of the simulation system. By the method, the credibility of a large-scale simulation system can be estimated, a policy risk based on simulation is effectively reduced, heavy loss probably caused by the credibility is avoided, and the development level of the simulation system is promoted.

The invention discloses a quantum device monitoring method and system based on a monitoring platform, and the method comprises the steps: building a quantum device monitoring platform, binding a quantum device, and determining a corresponding quantum device alarm rule set in the monitoring platform according to the attribute of the quantum device; acquiring quantum equipment data in real time by configuring an adapter of the quantum device matching with the quantum device, issuing the quantum equipment data to the monitoring platform, and comparing data of the quantum device with the alarm rule; and when data of the quantum device does not conform to the alarm rule, triggering an alarm engine in a monitoring platform, issuing alarm information to a topological graph of the quantum device drawn according to the quantum device, and performing alarm display in the topological graph of the quantum device.

The invention discloses an embedded heat dissipation device of a server room. The device comprises a working box and an annular air suction cavity which is located in the working box and opened upwards. An annular filter plate capable of filtering air entering the annular air suction cavity is fixedly arranged in the annular air suction cavity; and a first cavity which is located on a lower side of the annular air suction cavity and connected with the annular air suction cavity is fixedly arranged in the working box. The invention relates to a heat dissipation device capable of adjusting a rotating speed of heat dissipation fan blades in a machine room. When a heat conduction rod monitors that a temperature in the machine room rises to a certain value, air suction fan blades can be switched to a high-rotating-speed mode, and heat dissipation of the machine room is accelerated. A condenser can be started to dissipate heat of the machine room. And when the temperature rises to a threshold value, an alarm device can be connected into an alarm system to prompt related personnel and spill a dry powder, and heavy losses caused by fire disasters are prevented.

The invention discloses a method and a device for remotely setting short message forwarding. The method comprises the following steps that: a target mobile phone receives a short message, wherein the short message at least comprises a forwarding remote setting short message with a forwarding instruction; the target mobile phone resolves the short message, extracts the forwarding remote setting short message with the forwarding instruction, resolves a specified forwarding number, and sets the number as a number to which the short message is forwarded to finish the initiation of the forwarding function; and the target mobile phone receives a feedback from a network and informs a remote control mobile phone sending a remote setting short message instruction of the execution result. The device comprises a receiving module, a resolving module and a feedback module. The method and device transmit a specifically-defined information instruction to a target mobile phone, and then the mobile phone receives, resolves and performs the instruction, so the occurrence of heavy loss caused by incapability of timely reading important short messages containing important content is avoided.

The invention discloses an intelligent inspection and detection method for a coal conveying belt conveyor in a coal conveying bin area. The intelligent inspection and detection method comprises a set of single track, a mobile robot, a set of automatic rotating holder, a set of sound sensor, a set of gas detector and temperature and humidity sensor, four sets of autonomous charging stations, a set of field wireless communication deployment system and a background processing server. The problems that a traditional inspection system is low in integration and intelligence degree, and intelligent processing and judgment of various information on site, especially artificial intelligence detection of belt defects on site, are difficult to achieve are effectively avoided; subjectivity, hysteresis and possible accident omission caused by interpretation depending on monitoring personnel in traditional inspection are avoided, and heavy loss caused by breakage of the belt is avoided through belt defect detection.