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319 results about "Field service" patented technology

Definition of field service. 1 : service (as of troops, company agents, social-service workers) in the field. 2 : labor in the fields performed by slaves in America before 1865. You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

System and method for remote real-time state monitoring and intelligent failure diagnosis of wind turbine generators

The invention relates to a technology for examining and maintaining wind turbine generators, in particular to a system and a method for the remote real-time state monitoring and the intelligent failure diagnosis of the wind turbine generators. The problems that the existing technology for examining and maintaining the wind turbine generators cannot ensure the examining and maintaining effect, cannot timely find the internal failure, the sudden failure and the hidden failure trouble of the wind turbine generators and requires a high examining and maintaining cost are solved. The system for the remote real-time state monitoring and the intelligent failure diagnosis of the wind turbine generators comprises state monitoring equipment, a site monitoring and failure diagnosis center and a remote monitoring and failure diagnosis center, wherein the state monitoring equipment comprises an accelerated vibration sensor, a rotating speed sensor, a current sensor, a camera and an on-line automatic analysis and diagnosis instrument; the site monitoring and failure diagnosis center comprises a site server and a site PC (Personal Computer). The system and the method are suitable for all types of wind turbine generators.
Owner:山西大学工程学院

Encryption and decryption functions based field service terminal and application method thereof

The invention provides an encryption and decryption functions based field service terminal, which comprises a control processing unit, a main-station communication unit, an equipment communication unit, a power supply unit, an input and output unit, a safety unit and a smart card reading and writing unit. The control processing unit is respectively connected with the control processing unit, the main-station communication unit, the equipment communication unit, the power supply unit, the input and output unit, the safety unit and the smart card reading and writing unit. The safety unit is used for completing identity authentication and encryption and decryption of data information when the field service terminal is in communication with a main station and power energy meters, and the smart card reading and writing unit is used for field card writing and recharging of local charge-control smart power energy meters. The encryption and decryption function based field service terminal has the advantages that field service efficiency and quality are improved; the safety unit is added, so that transmission data of the field service terminal cannot be distorted, data confidentiality and integrity cannot be damaged and identities of users cannot be used falsely; and the requirement of power-utilization information acquiring system construction for power consumers can be met basically.
Owner:CHINA ELECTRIC POWER RES INST +1
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