9results about How to "Efficient start" patented technology

The invention discloses a fuel cell engine control method and device, a fuel cell controller and a medium. The fuel cell engine control method comprises the steps that the current environment temperature is obtained after a fuel cell engine is started, and the current starting mode of the fuel cell engine is determined according to the current environment temperature; after the fuel cell engine enters the current starting mode, the stack air inlet temperature and the stack air inlet humidity are detected, and according to the stack air inlet temperature and the stack air inlet humidity, a hydrogen pump and a gas compressor are controlled to be started for hydrogen supply; after it is detected that the hydrogen discharging valve and the water discharging valve are opened successfully, the isolating valve is opened, the average monomer voltage and the monomer voltage standard deviation are calculated according to the detected actual galvanic pile monomer voltage, and the opening degree of the four-way valve and the opening degree of the back pressure valve are controlled according to the average monomer voltage and the monomer voltage standard deviation; the air flow entering the electric pile is controlled based on the opening degree. According to the invention, the engine can be quickly and efficiently started under different environment working conditions.

The invention relates to the technical field of image communication, in particular to an intelligent camera with active defense and a defense method thereof, and the intelligent camera comprises a data acquisition module, an extraction module, a judgment module, a determination module, a screening module and a defense module. According to the invention, through fusion of a multi-parameter analysis technology and combination of the target position, the attitude angle and the height of a real-time image and dynamic changes of sound intensity, accurate identification of an intrusion target is realized, and the judgment module adopts a multi-level logic of combination of boundary judgment and attitude angle change, so that the accuracy of abnormal target judgment is effectively improved; the screening module reduces erroneous judgment through comprehensive screening of sound intensity and position; the defense module calculates a launching track based on the real-time position and height of the target, fixed-point active defense is achieved through a water bomb, passivity of a traditional voice alarm mode is avoided, and the problem that the response speed is not timely due to single fingerprint recognition and vibration monitoring data is effectively solved.

The invention discloses an air-cooled fuel cell system and a low-temperature start control method, and belongs to the technical field of fuel cells, and the air-cooled fuel cell system comprises a fuel cell stack, a bidirectional cooling fan, a mainboard, a first housing, a second housing, a first temperature sensor and a second temperature sensor. In cooperation with cycle control of low-efficiency reaction and normal reaction, the problem of thermal runaway of the fuel cell stack caused by long-term continuous heating in the same area due to the fact that low-temperature starting temperature regulation cannot be performed in the prior art is avoided, and efficient, safe and quick starting of the air-cooled fuel cell system in a low-temperature environment is realized; and the air-cooled fuel cell system is particularly suitable for wide application in cold regions.

The present invention relates to the technical field of hydraulic energy storage starting devices, and in particular to a pressure control method and system applied to hydraulic energy storage starting devices, which also improve the starting efficiency and reliability of the hydraulic energy storage starting device in a complex environment; the method comprises: performing pressure leakage detection on the hydraulic energy storage starting device, and if the pressure leakage rate detected is greater than a preset leakage threshold, a pressure leakage alarm is issued; if the pressure leakage rate detected is not greater than the preset leakage threshold, the starting device state information, the state information of the started device and the real-time environmental monitoring information of the device are obtained; the starting device state information and the started device state information are respectively evaluated in terms of pressure, and a starting device state score for characterizing the operating state of the hydraulic energy storage starting device and a started device state score for characterizing the operating state of the started device are obtained; and operation impact feature extraction is performed on the real-time environmental monitoring information.

The invention relates to a multi-unmanned aerial vehicle water lifesaving material cooperative delivery path planning method and system. The method comprises the following steps: acquiring lifesaving target data of a lifesaving task; acquiring lifesaving unmanned aerial vehicle state data of each lifesaving unmanned aerial vehicle, wherein the lifesaving unmanned aerial vehicle state data comprises unmanned aerial vehicle flight state data, unmanned aerial vehicle position state data and lifesaving material strength data; generating first unmanned aerial vehicle lifesaving task allocation information according to the lifesaving target data and the lifesaving unmanned aerial vehicle state data, wherein the first unmanned aerial vehicle lifesaving task allocation information is used for representing the lifesaving unmanned aerial vehicle state data of the lifesaving unmanned aerial vehicle participating in the lifesaving task; based on the first unmanned aerial vehicle lifesaving task allocation information and the lifesaving target data, path planning is carried out on the lifesaving unmanned aerial vehicle participating in the lifesaving task, and first path planning result information is generated. By adopting the method, lifesaving scene information can be comprehensively mastered, lifesaving unmanned aerial vehicle resources are reasonably allocated, and unmanned aerial vehicle path planning information is accurately and efficiently generated.

The utility model discloses a diesel engine power unit with a circulating heat preservation function, which belongs to the technical field of rainproof shed design, and particularly comprises a self-heating heat preservation device, a tube bundle and a plurality of diesel engine circulating mechanisms, the self-heating heat preservation device comprises a box body, and the interior of the box body is divided into a control cavity and a preheating cavity through a partition plate. An anti-explosion control box and a circulating pump are arranged in the control cavity, and a heating unit and a temperature sensing unit are arranged in the preheating cavity; the pipe row comprises a low-temperature pipe row and a high-temperature pipe row, is arranged between the diesel engine circulating mechanism and the self-heating heat preservation device, and is matched with the circulating pump to form a cooling liquid circulating heat preservation loop; each diesel engine circulation mechanism comprises a low-temperature water tank and a high-temperature water tank, and the high-temperature water tanks and the low-temperature water tanks in each diesel engine circulation mechanism are connected in parallel and then communicate with the corresponding high-temperature pipe row and the corresponding low-temperature pipe row. And the operation flexibility and practicability of the diesel engine power unit are improved.

The present application relates to fuel cell temperature control technical field, especially in kind, a kind of unmanned aerial vehicle fuel cell optimal temperature curve tracking control method, device, equipment and computer storage medium are pointed out.The present application constructs the optimal temperature curve model that changes dynamically with current and environmental temperature and humidity, determines the optimal temperature point corresponding to the power peak of different working conditions of electric pile;Real-time monitoring of electric pile temperature, compared with the optimal temperature point determined by model generates deviation signal;Based on the deviation signal continuous closed loop adjustment fan speed, so that the electric pile temperature tracks the optimal temperature curve;When extremely cold start, electrochemical self-heating is used to warm up, and after reaching the safe temperature, the fan is controlled to intervene according to the preset curve smoothly.The present application can track the optimal temperature curve according to load and environment, improve power generation efficiency, reduce hydrogen consumption, and inhibit temperature overshoot and chattering in extremely cold environment, reduce thermal stress damage, and ensure the wide temperature range and efficient and stable operation of unmanned aerial vehicle.

The utility model relates to the related technical field of brakes, in particular to an electromagnetic energy-saving disc brake which comprises a base, a placing frame, a connecting rod and a turning buckle, the placing frame is installed on the surface of one side of the base, an energy-saving mechanism is arranged on the surface of the upper portion of the base, and a convenient-to-repair mechanism is arranged on the surface of the upper portion of the base. According to the electromagnetic energy-saving disc brake, the indicating switch is started and can be fixed through the tightening bolt, it is ensured that equipment is kept stable in the working process, when the indicating switch controls the brake arm to rotate and be fixed through the pin shaft, energy consumption is reduced, the energy-saving effect is achieved, the second brake shoe is very easy and convenient to install and replace, and the practicability is high. Due to the design, the replacement and maintenance time is shortened, the operation steps are simplified, the working efficiency is improved, and if the second brake shoe needs to be maintained or replaced, the second brake shoe can be easily taken out for maintenance only by pressing the pressing block to push the pressing block back into the mounting groove.

The application discloses a kind of geometric defect identification and processing method based on AI big model, it is related to aerospace engineering field.The method aims at solving the problem of low efficiency and poor accuracy of aircraft CAD model geometric defect artificial repair.The steps include: first, CAD assembly body model is intelligently segmented into multiple sub-components;Second, the part geometry is converted into a structured feature representation, and a multi-task hierarchical graph neural network model incorporating domain knowledge is trained using labeled data;Then, the model is used to identify defects in sub-components, outputting defect type and spatial location information;Finally, according to the identification results, the repair topology is connected first, and the geometric anomaly is processed in sequence, and a watertight surface mesh is generated.The application realizes the whole process automation of geometric defect identification and repair, greatly improves the pre-processing efficiency and quality, and reduces the dependence on expert experience.