The invention belongs to the technical field of unmanned aerial vehicles and provides an unmanned aerial vehicle fault diagnosis method and an unmanned aerial vehicle fault diagnosis system. The unmanned aerial vehicle fault diagnosis method involves an unmanned aerial vehicle and a server and includes the steps that the unmanned aerial vehicle uploads log data and an identity label to the server in real time or not in real time; the server receives the log data and the identity label uploaded by the unmanned aerial vehicle; the server stores the log data and the identity label correspondingly, wherein the log data are used for analyzing fault causes of the unmanned aerial vehicle, and the identity label refers to keywords of the uploaded log data or query log data. The unmanned aerial vehicle fault diagnosis method has the advantages that the unmanned aerial vehicle transmits the log data to the server in real time or not in real time, and if the unmanned aerial vehicle has a fault, the fault causes can be determined according to the log data, so that unmanned aerial vehicle fault diagnosis efficiency is improved.

Unmanned aerial vehicle fault diagnosis method and unmanned aerial vehicle fault diagnosis system

The invention discloses a kilowatt-level ship energy system test platform based on composite energy combined grid power generation. The kilowatt-level ship energy system test platform based on the composite energy combined grid power generation comprises a main distribution board, a composite energy combined grid power generation device, a left spiral distribution board and a right spiral distribution board, wherein the composite energy combined grid power generation device, the left spiral distribution board and the right spiral distribution board are respectively connected with the main distribution board. The test platform further comprises an intelligent comprehensive management system which conducts optimizing configuration of the composite energy operation process, system analysis and monitoring, safety control, analog simulation and asset appraisal of a whole life circle of power generation, distribution, transformation and utilization of the whole system test platform. The composite energy combined grid power generation device comprises a dual-fuel power generation unit, an LNG gas turbine generation unit, a photovoltaic combined grid power generation device, a wind power combined grid power generation device, a fuel battery combined grid power generation device, a shore connection box, an energy feedback power generation unit, a sail simulating auxiliary pushing device and a power pushing device, wherein the dual-fuel power generation unit, the LNG gas turbine generation unit, the photovoltaic combined grid power generation device, the wind power combined grid power generation device, the fuel battery combined grid power generation device, the shore connection box, the energy feedback power generation unit, the sail simulating auxiliary pushing device and the power pushing device are respectively connected with the intelligent comprehensive management system. The intelligent comprehensive management system serves as a center and various types of clean energy application technologies are integrated.

Kilowatt-level ship energy system test platform based on composite energy combined grid power generation

The invention discloses a grid-connected solar photovoltaic power generation system, and relates to the technical field of the application of photovoltaic power generation. A lightning protection combiner box is connected with an inverter combiner box, a sun-following photovoltaic module square matrix is connected with the inverter combiner box and an inverter set through the lightning protection combiner box, the inverter set is connected with a power grid through a medium voltage transformer bank, an electric current measuring instrument and the lightning protection combiner box are connected with each other, a photovoltaic module temperature monitoring sensor is connected with the sun-following photovoltaic module square matrix, the photovoltaic module temperature monitoring sensor, an environment temperature sensor, an illumination intensity sensor and the electric current measuring instrument are all connected with a power station monitoring system, and the power station monitoring system is connected with the inverter set and the medium voltage transformer bank. The grid-connected solar photovoltaic power generation system is reasonable in design and high in safety while making use of solar energy reasonably, and monitors the operation data of the whole system in real time, and workers can conveniently know about the conditions of a substation at any time, so that accidents are prevented.

Grid-connected solar photovoltaic power generation system

The invention discloses a testing platform and method generally used for the whole process of low voltage user side distributed power source grid connection. The testing platform comprises a distributed power generation simulation module, a power grid working condition generating module, a measuring analysis module and an isolation power distribution module, wherein the distributed power generation simulation module is used for simulating the output characteristic of distribution generation and is connected with the input end of EUT, the power grid working condition generating module is used for simulating the operation working conditions of multiple power grids and is connected with the output end of the EUT, the measuring analysis module is used for controlling the detection procedures and collecting data analysis detection results, and the isolation power distribution module is used for providing electricity for detecting equipment. The detecting method application of the whole process of the testing platform comprises the type test, the predelivery test, the dynamic simulation test and the field test of the EUT. The testing platform is designed in a modular combination mode so as to be integrated in a mobile vehicle trunk conveniently, modular equipment can be combined freely according to testing objects and testing modes to meet the requirement for testing under different occasions and environments, and the whole process testing of grid connection of low voltage distributed photovoltaic generators, wind power generators and gas turbine generators.

Testing platform and method generally used for whole process of low voltage user side distributed power source grid connection

The invention discloses a ship engine-room monitoring system, which comprises a data acquisition network and an engine room monitoring center, wherein the data acquisition network is used for acquiring monitoring parameters in each ship engine room; the engine room monitoring center is connected with the data acquisition network and used for analyzing, managing and displaying the acquired monitoring parameters; the data acquisition network comprises a plurality of independent wireless acquisition sub-networks which are respectively arranged inside each engine room; and the wireless acquisition sub-networks respectively comprise a central node which is connected with the engine room monitoring center, and a plurality of data acquisition nodes which are connected with the central node through a wireless network and used for respectively acquiring the monitoring parameters in the engine rooms and sending the acquired monitoring parameters to the engine room monitoring center through the central node Compared with the conventional wired mode, the ship engine-room monitoring system provided by the invention has the advantages that: the monitoring parameters are acquired through the wireless network; the space of the engine rooms is saved; difficulty in wire arrangement is reduced; the reliability and real-time performance of the system are improved; and the difficulty in maintenance of the system is reduced

Ship engine-room monitoring system

The invention discloses a comprehensive test platform for a marine shafting, which mainly comprises a variable frequency motor, a speed reducer, a thrust bearing, a shafting and accessories, a loading device, a water lubricating unit, a hydraulic power unit, a monitoring and control unit, a foundation and a machine base, wherein the machine base is mounted on the foundation; various major components are mounted on the machine base; an output end of the variable frequency motor is connected with the speed reducer; the variable frequency motor drives the shafting and the accessories to rotate through a high elastic coupling; the loading device is arranged at a tail shaft of the shafting, and is communicated with a liquid way of the hydraulic power unit; a plurality of fixing supports are mounted in the shafting; the water lubricating unit is communicated with a tail bearing, intermediate bearings and a thrust bearing by water pipes; and the monitoring and control unit is used for controlling a test condition, monitoring the major moving components in a test process, and acquiring major test parameters. The test platform can measure data, such as an applied load, a bearing supporting force, shaft power, shafting vibration and a lubricating state of the tail bearing, so that bases are provided for optimum designs of structures and mounting modes of the shafting and the tail bearing.

Comprehensive test platform for marine shafting

A marine photovoltaic power generation grid-connected experimental platform comprises a solar photovoltaic array, a photovoltaic lightning protection combiner box, a direct-current lightning protection power distribution cabinet, a grid-connected inverter, an alternating-current lightning protection power distribution cabinet, a motor, a generator, a simulated marine load, an environmental monitor, an oscilloscope and an electric energy quality tester. Direct current generated by the solar photovoltaic array is inverted into 380V and 50Hz three-phase alternating current by the grid-connected inverter and is combined with a marine power network. The marine power network obtains power from a commercial power network through the motor, drives the generator to generate power and is serially connected into the simulated marine load. The grid-connected operating performance of a marine solar photovoltaic power generation system can be simulated under different external environments, data such as voltage, current, frequency, power and power factor can be measured, and evidence is provided for the structure and the optimal design of the marine photovoltaic power generation system by restoring the influence of the external environments and marine load change on the operating performance of the marine photovoltaic power generation system in actual use.

Marine photovoltaic power generation grid-connected experimental platform

The invention relates to an integrative ship engine room monitoring system, which comprises an on-board monitoring system, a shore wireless mobile communication system (MCS) ship end, a 3-generation (3G) wireless mobile communication network, an MCS maintenance centre end and a maintenance centre monitoring and analysis system (MAS), wherein the on-board monitoring system communicates with the shore wireless MCS ship end in a way of inter-progress communication or calling a function in a progress; the shore wireless MCS ship end communicates with the MCS maintenance centre end through the 3G wireless mobile communication network in a wireless Internet protocol (IP) manner; the MCS maintenance centre end communicates with the maintenance centre monitoring and analysis system in the way of inter-progress communication; the maintenance centre monitoring and analysis system communicates with a maintenance station of a ground maintenance centre through the Ethernet; and the maintenance station of the ground maintenance centre communicates with a user in a manner of hyper text transport protocol (HTTP). The integrative ship engine room monitoring system realizes more completed and stronger monitoring on a ship, and can effectively detect and diagnose faults of engine room equipment.

Integrative ship engine room monitoring system

Device for detecting thickness of oil film between cylinder sleeve and piston ring of diesel engine

The invention provides a marine environment simulation device for the electrical characteristic test of a marine solar cell panel. The marine environment simulation device comprises a work case, a water storage tank and a water pump for conveying sea water between the work case and the water storage tank, wherein a sample frame for fixing the solar cell panel is arranged inside the work case; andthe marine environment simulation device also comprises a vibration exciter which makes the work case vibrate and simulates the vibration frequency of a ship. The marine environment simulation devicecan simulate the marine environment of the solar cell panel in a laboratory, realize simulation test research of the corrosion of alternation of wetting and drying, sea water flushing and the polluted air environment to the marine solar cell panel and vibration simulation test research, acquire a large amount of scientific test data in limited time, and provide convenient test conditions for researching the corrosion and power output characteristics of the solar cell panel in the marine environment.

Zhao Jiangbin

Papers

Comprehensive test platform for marine shafting

Marine photovoltaic power generation grid-connected experimental platform

Integrative ship engine room monitoring system

Device for detecting thickness of oil film between cylinder sleeve and piston ring of diesel engine

Marine environment simulation device for electrical characteristic test of marine solar cell panel