1384results 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 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 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 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 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 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.

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 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.