1388results about How to "Avoid hidden dangers" patented technology

The present invention relates to a mobile Internet parking management method and system. The mobile Internet parking management method includes the following steps that: a server receives a reservation parking request sent by a client and generates reservation information according to the reservation parking request and allocates a reserved parking space; when a reservation automobile arrives at the entrance of a parking lot according to a reservation, the server searches the reservation information according to automobile information uploaded by the entrance of the parking lot and instructs the entrance of the parking lot to carry out parking according to the reservation information; when the automobile leaves, the server calculates parking fees of the automobile and sends fee payment information to the client so as to prompt the user to pay the fees; and after the server receives online fee payment of the client, a current parking process is terminated. With the mobile Internet parking management system of the invention adopted, the user can carry out registration and make a reservation in advance, the registration and reservation are directly recorded through the system, an unoccupied parking space is reserved; and when an automobile is being parked, the system automatically identifies whether the automobile is a reservation automobile. With the mobile Internet parking management method and system adopted, a situation that a large number of parking space guidance and automobile searching devices are installed in a parking lot can be avoided, investment cost and system maintenance cost can be saved.

The invention relates to an automatic monitoring and alarming system for vehicle traffic safety. The automatic monitoring and alarming system comprises a vehicle-mounted system, a group vehicle monitoring system and a wireless communication system, wherein the vehicle-mounted system is arranged inside a vehicle, the group vehicle monitoring system administrates vehicles, and the wireless communication system keeps real-time communication between the vehicle-mounted system and the group vehicle monitoring system. The vehicle-mounted system is connected with a camera module, a sound pickup, a flammable and combustible material detection module, a GPS module, a vehicle control unit, an alarming system and the wireless communication system. When the vehicle-mounted system finds that the vehicle is about to or has been stolen, the group vehicle monitoring system is automatically informed through the wireless communication system, and the group vehicle monitoring system is made to inform the public security and group related personnel while the alarming system is made to work; the group vehicle monitoring system achieves vehicle control in an automatic intelligence or artificial direct intervention mode through the wireless communication system in necessity, and safety of a driver and safety of legal workers on the vehicle are protected to the maximum extent. The automatic monitoring and alarming system can rescue vehicles in danger through the group and the public security in time.

The invention discloses a virtual synchronous generator-based photovoltaic power control strategy, which comprises a photovoltaic power generation system, an energy storage device and an inversion device, wherein a power supply output end of the photovoltaic power generation system is respectively connected with an energy storage end of the energy storage device and an inversion end of the inversion device; the output end of the inversion device is connected with a power grid; the inversion device carries out a power control through a virtual synchronous generator method; the output power of the inversion device is adjusted through the virtual synchronous generator method to reach a stable state; the output power is adjusted according to load fluctuation; stable frequency and voltage of the photovoltaic system can be maintained; and the grid-connected generation performance of a photovoltaic power station is effectively improved.

The invention relates to a magnesium-zirconium brick with high erosion resistance and thermal shock resistance for an RH furnace and a production technology thereof. The brick comprises the following components by weight percent: 76-90% of MgO and 5-21% of ZrO2; and the firing temperature of the brick is 1680-1840 DEG C. The production technology comprises the following steps: pretreating magnesia and zirconia, synthesizing the magnesia and zirconia into magnesium-zirconium sand; crushing synthesized magnesium-zirconium sand and fused magnesia to 5-3mm, 3-1mm and 1-0mm particles; homogenizing under strong force and mixing the granular materials, 150-200 mesh magnesia and magnesium-zirconium sand powder, 200-250 mesh zirconia powder, additives CaO and Y2O3 and binder paper pulp water liquid and performing compression moulding; baking at 120 DEG C for 24-72 hours; and heating to 1680-1840 DEG C and maintaining the temperature for 3-5 hours. The linear change of the finished brick is within the range of + / -0.5%; and after being baked, the brick has no surface chap defect caused by the phase change of zirconia and has excellent refinery cinder erosion resistance and thermal shock resistance.

The invention discloses a movable type fire protection extinguishment method used for an electrical power tunnel. By means of the method, fire vehicles can be dispatched to corresponding positions when fire protection dangers happen, and fire extinguishers are remotely controlled by a platform or locally started for extinguishment. In order to shorten the time spent on reaching an accident site, vehicle parking points are arranged on the tunnel at certain intervals, and the fire vehicles are placed at the fire vehicle parking points. The method is high in intelligent degree, light in weight, small in size, moderate in manufacturing cost, flexible in configuration, simple in path, low in maintenance cost and capable of completely achieving tasks and purposes of video surveillance, fire protection touring and linked extinguishment in the electric power tunnel. The movable type fire protection extinguishment method solves the problems that existing monitoring devices used for fire protection and extinguishment in the electrical power tunnel are generally monitoring type cameras which can hardly meet the application in the closed and semi-closed environment of the electrical power tunnel and have the insurmountable defects and disadvantages of being short in service life, narrow in monitoring range and high in maintenance cost.

The invention discloses a quantitative scoring method of a power equipment state. The method comprises the following steps of: collecting parameters of power equipment state quantity; calculating an equipment state quantity score according to a scoring rule made in advance; according to a reasonable score set in the scoring rule, determining whether the equipment is normal or not. According to the invention, state evaluation in a state overhaul field is refined, being different from a general overhaul system, the method of the invention focuses on equipment state scoring, predication assessment and risk control, and overhaul personnel and pretesting personnel are helped to grasp the present running information of the equipment in real time. By using the method of the present invention, blindness in the process of equipment maintenance can be obviously reduced, maintenance deficiency or excess is avoided, at the same time, a large amount of repair cost is saved, the safe and stable operation of the equipment are ensured.

The invention provides a complete-set starting commissioning test method and system for a coal-fired unit turbine, and the use safety of the coal-fired unit turbine can be improved. The method comprises the following steps that after transmission for a turbine complete-set starting commissioning test thermal signal and interlock protection test is completed, trial operating conditions of a system are checked and confirmed; an auxiliary device and the system are tested, cold starting testing is conducted on high and intermediate pressure cylinders of the turbine, and the corresponding relation between the lubricating oil pressure and the rotating speed is recorded; rolling parameters are recorded; a lubricating oil system is subjected to a pump switching test and a unit loading process warming-up test; a valve airtightness test and an overspeed test are conducted; the high and intermediate pressure cylinders of the turbine are started in a warm state; the high and intermediate pressure cylinders of the turbine are started in a hot state; the high and intermediate pressure cylinders of the turbine are started in an extremely hot state; a unit loading test is conducted; vibrating data in all stages of a unit are recorded; and a test of shut-down at sliding parameters is conducted. The system comprises a no-load and underload commissioning test module, a turbine on-load commissioning test module and a 168-hour full-load operating commissioning test module.

The invention relates to an online monitoring device of a state of a motor device, which comprises a data acquisition module (10), a data processing module (20), a data analysis module (30), a data output module (40) and a power supply module (50) connected in sequence. The monitoring method of the device comprises the steps of: collecting the parameters of the motor via the data acquisition module; processing the collected data to adapt to needs of the data analysis module; and comprehensively analyzing the data via the data analysis module, and outputting analysis results to the data output module. The traditional motor detection method is changed, the online monitoring method is applied, the health condition of each state of the motor can be mastered more accurately and promptly, hidden faults of the motor can be solved more effectively and early, the monitoring does not depend on the skill level of the staff, and the online state monitoring and fault diagnosis of the motor is the inevitable trend of future development.

The embodiment of the invention discloses a device inspection method, device and system, a computer readable storage medium and an indoor hanging rail intelligent tour inspection robot. The method comprises the steps of acquiring a plurality of target images of a to-be-inspected point collected by a camera of the robot in a preset acquisition time period; converting the color types of the target images into HSV color space types; calculating the brightness mean value of indicator light areas in each target image, counting the lighting times of indicator lights in a preset acquisition time period, matching corresponding target indicator light identification sub-model in a pre-established indicator light identification model library according to the area information of the to-be-inspected point, and determining whether the equipment operation of the to-be-inspected point is normal or not by using the target indicator light identification sub-model according to the brightness mean value and the lighting frequency. According to the technical scheme, the equipment running condition of the current inspection point can be judged quickly and accurately, so that the equipment which is abnormal in operation can be fed back in time, and relatively high stability and accuracy are ensured.

The embodiments of the invention provide an unmanned aerial vehicle / motor control device and method. The motor control method comprises the following steps: acquiring current attitude information of the load, target attitude information of the load and current operation parameter information of one or more motors on the load, and obtaining control information for controlling the one or more motors according to the current attitude information, the target attitude information and the current operation parameter information; transmitting the control information to a shared memory for storage; and reading the control information from the shared memory and controlling the operation of one or more motors according to the control information. A motor control device according to the invention does not need connection of cables or PCB wiring, thereby reducing hardware size; the motor control device is directly implemented inside a chip through a shared memory, thereby improving the speed and stability of data interaction between a main control unit and an executing unit. Further, a correlation algorithm is adopted for ensuring the no reduction of motor and pan-tilt control frequency and accuracy.

The invention discloses an online monitoring system and method of a corrosion protection effect of oil well pipelines. The system comprises a remote control center (1), an in-situ online corrosion monitoring unit (2), a transmission optical fiber (3), a corrosion data collector (4), a sensor and a network cable (10), wherein the remote control center (1) is connected with the in-situ online corrosion monitoring unit (2), the in-situ online corrosion monitoring unit (2) is connected with the corrosion data collector (4) through the transmission optical fiber (3), and the corrosion data collector (4) is connected with the sensor through the network cable (10). The online monitoring system disclosed by the invention can determine the corrosion damage states of buried oil well pipelines, locate damage points of corrosion layers, and evaluate the aging state of corrosion protection layers to serve as the basis for formulating a maintenance scheme, and can determine the corrosion condition and rate of the oil well pipelines, predict the safe service lives of the oil well pipelines, can avoid potential hazards due to corrosion leakage, can optimize the optimum injection amount of a corrosion inhibitor and can evaluate the forced impressed current cathodic protection effect of the oil well pipelines.

The invention provides a secret key generation method based on wireless channel characteristics in a frequency division duplex system. The secret key generation method comprises the following steps: carrying out channel estimation by both communication parties respectively to obtain channel state information of an uplink of the same moment; extracting a certain characteristic parameter from the estimated channel state information respectively and quantifying; carrying out consistency negotiation according to a quantifying value; and carrying out mapping according to a negotiation value and the quantifying value to obtain a consistency secret key. According to the method disclosed by the invention, the obtained secret key has randomness and privacy and can be updated in real time, so that the safety of the secret key is greatly enhanced, and the secret key can be better applied even under a high-speed moving environment; and meanwhile, compared with an existing wireless communication system, the method has better compatibility and has a better market application value.

The invention discloses an online monitoring device for the mechanical characteristics of a vacuum circuit breaker, which is installed inside the vacuum circuit breaker. The vacuum circuit breaker has a vacuum bubble, an insulating pull rod, a connecting rod and an operating mechanism. The insulating pull rod is connected to the lower end of the vacuum bubble, and It is connected with the operating mechanism through a connecting rod, and the operating mechanism is also connected with an energy storage spring; the online monitoring device includes a force sensor, a signal conditioning module, a data processing module and a communication module, and the force sensor is arranged on an insulating pull rod or a connecting rod, The input end of the signal conditioning module is connected with the output end of the force sensor, the input end of the data processing module is connected with the output end of the signal conditioning module, and the input end of the communication module is connected with the output end of the data processing module. The invention can obtain mechanical characteristic parameters such as opening time, closing time, contact pressure and overtravel, that is, has the effect of comprehensive monitoring; the invention can also avoid hidden dangers caused by insulation problems.

The invention relates to a method for judging the failure properties of shielding failure and counterattack of a transmission line. In the method, a computer is adopted to collect and process data; and for a certain lightning tripping failure of the transmission line, a lightning protection simulation analysis program is adopted and the collected and processed data is applied by the analysis of the computer to perform simulation reduction and comparison analysis on a circuit-failing tower with the lightning tripping to obtain a judgment result based on the data of the transmission line provided by a running unit, circuit tripping failure data and the lightning activity information of a line corridor obtained by the query of a lightning positioning system. The method comprises the following basic steps of: (1) performing collection and clearing-up on the data of the transmission line and the circuit tripping failure data by adopting the computer; (2) querying the lightning activity information in the corridor of the failing tower by utilizing the lightning positioning system; (3) analyzing the lightning protection performance of the failing tower by the computer by utilizing the lightning protection simulation analysis program; and (4) checking the lightning protection performance and judging the failure property. The method is simple, convenient and easy to operate and convenient to popularize and apply, and ensures low cost.

The invention discloses a screw tightening machine capable of preventing a screw from being brought up. The screw tightening machine comprises a support, a feed mechanism, an upper slide block, a lower slide block, a pushing-up mechanism, an electric screwdriver assembly and a screwdriver head. The support is provided with an air cylinder seat and a pushing-up mechanism seat. The feed mechanism is composed of a main air cylinder and a feed rod. The upper slide block and the lower slide block are arranged on the support. The feed rod of the feed mechanism penetrates through the upper slide block and the lower slide block sequentially. The pushing-up mechanism is arranged on the pushing-up mechanism seat. The screwdriver head is arranged on the lower slide block. The electric screwdriver assembly is arranged on the upper slide block. The feed mechanism and the pushing-up mechanism are adopted for the screw tightening machine, so that when the screw is tightened through a screwdriver, stable axial contact force between the screwdriver and the screw is maintained. When the screwdriver retreats from the screw, the pushing-up mechanism makes the screwdriver head leave the screw fast, so that the hidden trouble that the screw is brought up by the screwdriver head is avoided completely. The screw tightening machine has the advantages of being contactless, easy to control and high in efficiency.

The embodiment of the invention discloses an equipment state information acquisition method, a device, a system and a storage medium and as well as an indoor rail-hung intelligent patrol robot. The method comprises the following steps: acquiring a target image of to-be-recognized equipment collected by a camera of the robot; extracting recognition characteristic vectors of corresponding types in the target image according to target attribute information of the to-be-recognized equipment; matching corresponding characteristic recognition sub modules in a pre-established characteristic recognition model library according to the target attribute information; and invoking the characteristic recognition sub modules to analyze extracted recognition characteristic vector to obtain operating stateinformation of the to-be-recognized equipment. According to the technical scheme provided by the invention, the operating state information of current equipment can be acquired, so that equipment which operates abnormally is fed back immediately; the system solves the problems that the manual patrol efficiency is low and the oversight is likely to happen effectively and has relatively high stability and accuracy.

The invention provides a cloud-intelligent seal based on internet of things and an implementation method for the cloud-intelligent seal. The cloud-intelligent seal comprises a seal main body assembly as well as an information processor, a seal use identifying module, an image forensics module, a memory, a network module and a power supply module which are arranged in the seal main body assembly. The seal is used for automatically recording usage information every time records, associating every-time usage information with an forensics image, automatically recording and storing the forensics image, so that supervision and administration, recording and filing during seal usage are effectively solved, thereby greatly facilitating seal management and avoiding various risk hidden hazards due to the fact that a conventional seal cannot be effectively managed; meanwhile, information is sent to a cloud-end user by virtue of a network module, and the cloud-end user can carry out cloud management, recording, supervision, query and evidence taking on use of the seal in real time. According to the invention, portability, practicability and economical efficiency of the conventional seal are kept, and the conventional seal is enabled to have the function of the cloud internet of things, and is more convenient for remote management and usage record management.

The invention discloses a metering device and method for radio frequency testing system errors in mobile terminal production, wherein the device comprises a single source, a power meter, a testing device and an output module, the method comprises the following steps: the signal source is used for sending upstream testing signals, the power meter is used for testing internal loss of the signal source according to the upstream testing signals, the testing device is used for testing the line loss of the upstream testing signals, the output module is used for outputting the difference value of the line loss of the upstream testing signals tested by the testing device and the internal loss of the signal resource tested by the power meter, wherein the difference value is taken as upstream chain line loss of a radio frequency testing system in the mobile terminal production. The meter device and method avoid hidden dangers brought by the self errors of a golden board of a golden machine, and adopt the stable signal resource and the power meter with higher accuracy to test the internal loss of the signal resource, so that the system errors are metered more accurately, and further the accuracy, stability and reliability of the radio frequency testing system in the mobile terminal production are improved.

The invention discloses an electric fault detections system for a vehicle, and the system comprises a voltage collection module, a current collection module, a temperature collection module, an energy monitoring and processing module, a voltage difference monitoring module, a control processing module, a communication module, and an alarm module. For a power module and all power consumption modules, the system firstly obtains the product of current and voltage; secondly carries out the integration of the product of current and voltage in a set time period, and obtains the electric energy or reference electric energy; thirdly monitors the power utilization and hidden conditions of the power module and all power consumption modules through the electric energy or reference electric energy in all time periods. According to the invention, the system carries out the multiplication of the current and voltage signals to generate power, and then carries out the time integration of the power, i.e., carrying out the amplification and judgment of small current and voltage signals and weak hidden trouble signals, thereby facilitating the guaranteeing of the monitoring depth of early hidden troubles, and avoiding a condition that a small fault cannot be inspected. The system can achieve the earlier finding of faults and hidden troubles, and guarnatees the safer power utilization of the vehicle.

Provided is a power supply restoration method for a power distribution network based on an intelligent soft switch. The method comprises: according to a selected power distribution system, inputting a connection relationship among a line parameter, a load level, and a network topology, a system operating voltage level and branch current limit, an intelligent soft switch access position, capacity and loss coefficient, a system fault location, and a reference voltage and a reference power initial value; according to a provided power distribution system structure and parameter, establishing a mathematic model of power supply restoration for the power distribution network based on the intelligent soft switch, including: setting a maximum power supply restoration active load as an objective function, and taking into account the system load flow constraints, operating voltage constraints, branch current constraints and intelligent soft-switching operation constraints; solving the obtained mathematical model by using a primal-dual interior point method; outputting solve results: an objective function value, a voltage amplitude and a phase angle of each node, a restoration load coefficient of each node, and an intelligent soft switch transmission power value. The method provided by the present invention avoids the hidden danger caused by switch operations, is more safe and reliable, and comprehensively improves the self-healing ability of the power distribution network fault.

The invention discloses a method for realizing quality safety and traceability of eco-pork. The steps comprise: in a live pig culture phase, putting an RFID label with coding identification on each live pig, after reading each RFID label through an RFID reader, storing information data into a database, and also establishing a microbe technology culture management system; and in a live pig slaughter phase, after slaughtering and segmenting live pigs, copying the information data corresponding to the coding identification of the labels, and converting the information data into two-dimensional codes for marking to each segmented pork portion. According to the method provided by the invention, whole-course data acquisition and monitoring of a live pig culture and slaughter process are realized on the basis of a data platform, and data traceability and management traceability are realized. Through monitoring the data in the database, once abnormity data or quality problems occur, the problems can be rapidly found and solved, the loss of live pig culture enterprises is reduced, and the hidden risks of food safety are radically solved.

The invention relates to an integrated circuit (IC) card payment authentication method based on fingerprints and finger veins. The method comprises the following steps: registration: a registered terminal acquires registration finger vein information and registration fingerprint information of a cardholder to generate a finger vein template and a fingerprint template, stores the fingerprint template in an IC card and the finger vein template in a background system; trading: a payment terminal obtains site payment fingerprint information and site payment finger vein information acquired when the cardholder pays at site, compares the site payment fingerprint information with the fingerprint template stored in the IC card, if the comparison fails, trading is refused, if the comparison succeeds, the background system compares the site payment finger vein information with the finger vein template stored in the background system, if the comparison fails, the trading is refused, if the comparison succeeds, the trading is authenticated. By adopting the method, the identity authentication security level can be effectively improved.

The invention relates to a backup power system for a fuel cell for communication. The backup power system comprises a hydrogen-donating unit, a fuel cell unit, a DC / DC (Direct-current / Direct-current) unit, an output unit, a patrolling unit, an analog acquisition unit, a main control unit and a human-computer interaction unit. The hydrogen-donating unit realizes the aim of preparing high-purity hydrogen through carbureted hydrogen; the fuel cell unit is used for converting chemical energy into direct-current electric power; the DC / DC unit is used for adjusting output voltage of the fuel cell so as to supply power to the output unit; the output unit is used for supplying power to a communication base station after city electricity is powered down; the patrolling unit is used for acquiring voltage of a monocell; the analog acquisition unit is used for acquiring various data signals in the system and transmitting the data signals to the main control unit; the main control unit is used for analyzing data and sending a control signal to each unit; and the human-computer interaction unit is used for completing the functions of short-range communication, remote communication, monitoring, alarming and the like. The system is high efficient, clean, safe and reliable, has high intelligence, can realize seamless connection with city electricity supply when being used as a communication standby power supply, and simultaneously, does not need to be charged, and can be continuously operated for a long time.

This invention discloses a method for discriminating pluggable optical modules including the following steps: plugging an optical module with written check information into a device using said module, which reads the label of the module to compare the label with its expected value, if they are the same, then the optical module is checked continuously, the device reads the content of the optical module serial number and inputs it with character strings kept in the program to be computed with a ciphered algorithm to output a second ciphered message, the device reads a first ciphered message and compares it with the second, if they are different, it shows that the module does not meet the requirement and processes it abnormally, if they are the same, the module meets the requirement. This invention also discloses a ciphering method.

The invention discloses an intelligent photoelectric hybrid detecting optical cable and a production method thereof, which relate to a novel intelligent detecting optical cable used in the fields of oil fields, coal mines, aviation, fire fighting and the like and a production method thereof. The intelligent photoelectric hybrid detecting optical cable comprises a miniature tightly-enveloped optical fiber unit, a net-like copper conductor conducting unit, a high temperature-resisting fluoroplastic insulating layer and a high-strength stainless steel wire armoring unit, wherein the net-like copper conductor unit is enveloped outside the miniature tightly-enveloped optical fiber unit; the high temperature-resisting fluoroplastic insulating layer is arranged outside the net-like copper conductor conducting unit to serve as a protective sleeve; the high-strength stainless steel wire armoring unit is arranged outside the high temperature-resisting fluoroplastic insulating layer; the miniature tightly-enveloped optical fiber unit consists of a high temperature optical fiber, a miniature stainless steel pipe and high temperature fiber paste; the optical fiber unit has a tightly-enveloped structure; the high temperature optical fiber is sleeved in the miniature stainless steel pipe; the high temperature fiber paste is filled around the high temperature optical fiber in the miniature stainless steel pipe; and the net-like copper conductor unit is formed by weaving a plurality of copper wires.

The invention relates to a diamond abrasive wire cutting fluid for a semiconductor precision sheet. The raw materials of the diamond abrasive wire cutting fluid consist of the following compositions in parts by mass: 30-80 parts of polyalcohol, 0.01-0.5 parts of hydrogen inhibitor, 0.01-0.5 parts of acid, 0.1-1.0 part of surfactant, 1.0-10.0 parts of dispersing agent, 0.01-0.5 parts of preservative and 10-35 parts of deionized water, wherein the polyalcohol is mixture of propylene glycol and polyethylene glycol with ratio being 1 to (1:2) and the molecular weight of the polyethylene glycol is between 100 and 600. The diamond abrasive wire cutting fluid for the semiconductor precision sheet has the characteristics that the hydrogen is effectively inhibited from being generated, the lubricating effect is remarkable, the cleaning is easy to conduct, the cost is low and the performance is stable.

The invention discloses a prestress steel purlin-concrete combined continuous rigid frame bridge and construction method thereof. A steel purlin concrete combined structure with upper and lower swingplates is adopted, girder subsection adopts different combined interfaces according to stress demand of bridge under each construction stage and operating condition, set in vitro and vivo prestress beams are timely applied in batch, and material advantages of the two are fully played; compared with the existing prestress concrete continuous rigid frame bridge, self weight of the girder is greatlyreduced, spanning capacity is obviously increased, and sub structural engineering quantity and bearing capacity requirement of foundation soil are correspondingly reduced. The invention adopts prefabricated concrete bridge road plate for splice, and the prefabricated concrete bridge road plate is joined with the steel truss girder, thus stress is clear and performance is reliable; construction isobviously simplified, quality of each parts is easy to control and check, and disease hidden troubles that the conventional prestress concrete continuous rigid frame bridge is not reliable in curve prestress long strand performance, concrete is cracked in tension and deflection is excessive for a long time caused by contraction creep are avoided.

A circuit interrupter device having a circuit module that automatically monitor the operation of the device and contains a master control system that periodically sends out an impulse that simulates an electric shock signal, a monitoring system that has an interlocking magnifier and comparator, and a signaling system to indicate the normal or faulty operation of the device.