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32results about How to "Improve output reliability" patented technology

Intelligent electric energy meter on-line monitoring and remote control system

The invention discloses an intelligent electric energy meter on-line monitoring and remote control system. An automatic monitoring detection system comprises an electric energy meter verification device, a network camera, an Ethernet switch, and a meter hanging rack. An automatic load control system comprises a network relay and a host computer control system. A protection system comprises an air switch. The electric energy meter verification device comprises a computer, a signal source, a programmed control power source, a standard electric energy meter, and an error processor. An RS-485 bus way is adopted by communication among various modules in the verification device, and a signal source is used for the unified control of the working of the various modules. An RS232 interface is adopted for the communication between the electric energy meter verification device and a host computer, and the host computer is used to control the meter calibration working of the verification device. Error acquisition operation, determining operation, rounding operation, storage operation, and printing operation are completed at the same time. The real-time on-line monitoring and the remote control of the intelligent electric energy meter are realized effectively and accurately.
Owner:YANTAI DONGFANG WISDOM ELECTRIC

Control method for improving reliability of impressed current cathodic protection of offshore wind power pile foundation

The invention discloses a control method and system for improving reliability of impressed current cathodic protection of an offshore wind power pile foundation. The control method and system for improving the reliability of impressed current cathodic protection of the offshore wind power pile foundation are applied to an impressed current cathodic protection system. In a normal protection state, the system outputs in a constant potential operation mode, when the system encounters an extreme working condition or a reference electrode controlled by the system breaks down, the system is automatically switched to a constant current mode to set upper and lower limit values of output current for output, therefore, over-protection or under-protection, of a protected structure, caused by over-limit output of the impressed current cathodic protection system under the extreme abnormal working condition is prevented, and the operation reliability of the impressed current cathodic protection system is improved; and meanwhile, output current of a numerical control high-frequency switching power supply can be controlled in real time through technologies such as closed-loop PID increment adjustment and PWM modulation, when output protection current exceeds a protection current output limit interval, the constant potential control mode is automatically switched into a constant current control mode, and constant current output is conducted according to the set upper and lower limits of the output current.
Owner:DALIAN KINGMILE ANTICORROSION TECH CO LTD +1

Intelligent sensing inspection system and method for transformer substation

The invention discloses an intelligent sensing inspection system and method for a transformer substation, and relates to the technical field of electric power system inspection. The system comprises an edge end data acquisition and analysis subsystem, a station end management subsystem and a cloud artificial intelligence subsystem, the edge end data acquisition and analysis subsystem is used for acquiring target inspection data based on an inspection task and performing edge analysis on the target inspection data based on an artificial intelligence model to obtain an inspection analysis result; the station end management subsystem is used for generating and issuing an inspection task, managing inspection related data and generating an original sample set for training and optimizing an artificial intelligence model; and the cloud artificial intelligence subsystem is used for training and optimizing an artificial intelligence model according to the original sample set and issuing the artificial intelligence model. By multiplexing existing equipment of the transformer substation and deploying intelligent equipment, intelligent and automatic inspection of the transformer substation is realized, the manual operation and maintenance cost is saved, and high-quality operation and maintenance are realized.
Owner:STATE GRID INTELLIGENCE TECH CO LTD

Ceramic capacitive pressure sensor and preparation method thereof

The invention relates to a ceramic capacitive pressure sensor and a preparation method thereof, and belongs to the technical field of sensor preparation. The ceramic capacitive pressure sensor comprises a thick ceramic substrate and a thin ceramic substrate, the thick ceramic substrate and the thin ceramic substrate are bonded and fixed through a glass paste bonding layer, a plurality of grooves are formed in the side edge of the thick ceramic substrate, each groove is filled with an L-shaped conducting strip, the conducting strips and the grooves are conductively connected through elargol, and a bonding pad is further arranged at the groove position of the top of the thick ceramic substrate and used for being connected with the conducting strip to achieve the transition connection effect.According to the ceramic capacitive pressure sensor, the groove is cut in the side edge of the thick ceramic substrate, the groove is filled with the conducting strip, and the groove cavity is filledwith the conductive silver adhesive between the conducting strip and the groove, so that the ceramic capacitive pressure sensor is not influenced by air pressure, the groove cavity can be filled withthe conductive silver adhesive, meanwhile, visual detection can be carried out, and the output reliability of the sensor is obviously improved.
Owner:常州盛士达传感器有限公司

Revolution speed adapter plate for turbine

The invention relates to a revolution speed adapter plate for a turbine, which belongs to the technical field of turbine revolution speed measurement. The revolution speed adapter plate for the turbine aims at solving the problem that as the revolution speed measuring transducers of existing turbines are limited by respective functions, giving consideration to both accuracy and reliability is very difficult. The revolution speed adapter plate for the turbine comprises a direct-current power supply, a first frequency voltage converter, a second frequency voltage converter, a high selective circuit, a comparison circuit, an inverter, a first relay and a second relay, the two frequency voltage converters respectively receive speed signals output by a magnetic resistance type speed measuring transducer and an eddy speed measuring transducer, a greater value is output by the high selective circuit, after the greater value is compared with the voltage threshold value of the comparison circuit, an inverter is adopted to control the relay to gain power or lose power according to the level signal of the comparison circuit, and a revolution speed signal is selected to be output. The revolution speed adapter plate for the turbine is used for selecting and outputting the revolution speed signal obtained by the speed measuring transducer.
Owner:HARBIN TURBINE
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