21results about How to "Quick protection" patented technology

The invention discloses an integrated control system for electric modification of an electric tractor, and belongs to the technical field of agricultural machinery. The system comprises a signal processing module, a health state evaluation module, a control decision module, an execution module and an optimization module, all the modules realize data interaction through the Ethernet, and the system is adaptive to heterogeneous hardware integration requirements after electric modification of a traditional fuel tractor. According to the invention, the health state evaluation module and the prediction model realize quick response and graded protection of high-voltage insulation, battery overheating and actuator fault scenes through clear quantification, and realize quantitative scoring of the health degree in the limitation of temperature, load and attitude coupling complex scenes; meanwhile, the time domain and frequency domain characteristics of the signals are extracted to provide a quantitative basis for evaluation, different actions of power reduction, speed limiting and emergency shutdown are triggered according to the health degree state, the situation that operation efficiency is affected by excessive protection is avoided, early warning can be conducted in the early stage of a fault, rapid protection can be conducted when the fault occurs, and the running safety and reliability of the tractor are improved.

This utility model relates to the field of automatic power-off protection technology for leakage current, and discloses an automatic power-off protection device for urban lighting based on an RTU (Remote Current Detection Unit). The device includes a control box, an RTU module fixedly connected inside the control box, a leakage current detection module fixedly connected inside the control box, and a power-off protection module fixedly connected inside the control box. The power-off protection module has a protection mechanism inside, and the control box has a disassembly mechanism. The protection mechanism includes a torsion spring, and an insulating block is fixedly connected to the left side of the outer wall of the torsion spring. In this utility model, the leakage current detection module monitors urban lighting in real time, achieving rapid response and precise protection against leakage current hazards. Once an excessive leakage current is detected, the protection mechanism in the power-off protection module can instantly cut off the circuit, preventing safety accidents caused by leakage current and greatly improving the safety of urban lighting.

The utility model relates to the technical field of garden drill and discloses a portable garden drill for planting, which comprises a drill handle, a fixing plate is installed on the upper surface of the drill handle through a drill bolt, the upper surface of the fixing plate is provided with a gasoline engine, a protection plate, a clamping assembly, a protective cover and a drill sliding block, and the utility model has a reasonable structure, the clamping rod is opened on one side of the clamping seat by rotating the clamping bolt, the protective cover is sleeved on the drill bit and placed into the clamping seat, the clamping rod and the clamping seat are rotated to clamp and fix the protective cover by rotating the clamping bolt, the drill bit is quickly protected and prevented from being damaged, the use of the drill bit is not affected by the damage caused by the bumping of the drill bit during the transportation in inappropriate conditions, the worker is not damaged by the bumping of the drill bit during the transportation, the gasoline engine is installed on and removed from the drill handle by rotating the drill bolt, the clamping assembly is installed under and removed from the protection plate by rotating the mounting bolt, and the gasoline engine and the clamping assembly and other components are quickly removed for repair and replacement.

This utility model discloses a safety container device for emergency handling of hazardous chemicals, including a safety container. The safety container includes a container body and a lid detachably mounted on the container body, and also includes an elastic guide positioning mechanism fixedly mounted inside the container body. The elastic guide positioning mechanism includes several cylinder pressure rollers, each cylinder pressure roller rotatably connected to an elastic pressure arm with an adjustable angle. A spring structure is installed on each elastic pressure arm, which tensions and presses the cylinder pressure rollers against the cylinder through the spring structure. This structure effectively increases the safety of emergency handling of leaking hazardous chemical cylinders, enabling immediate and safe emergency handling of hazardous chemical leaks.

The invention discloses an ultra-fast protection method for a distributed control system, the system adopts a star-shaped connection topological structure, a main node unit comprises an MCU unit and a main FPGA unit, the main node unit comprises an MCU unit and a main FPGA unit, and the MCU unit and the main FPGA unit are connected with each other. The main FPGA unit comprises a communication coding protection processing unit, a data interaction unit, a protection configuration unit, a protection output unit and a multi-path main communication interface; the system can comprise a plurality of slave node units, and each slave node unit comprises a slave FPGA unit and a slave communication interface corresponding to the master communication interface. According to the invention, the original communication channel in the distributed control system is utilized, the whole system is protected more quickly in real time through the design of a communication protocol and a protection strategy, and when any node in the distributed control system fails, the super-fast protection of the whole system is realized, and further expansion of the failure is avoided. Meanwhile, the control method can be flexibly adjusted according to different application requirements, balance between rapid protection and high availability is achieved, and therefore the control method has wider applicability.

The application provides an oil bubble discharge experiment platform comprising an optical diagnosis system, realizes quantitative research on bubble discharge characteristics of transformer oil under different parameters, and can observe clear images in a bubble discharge process, and the experiment platform comprises: a power supply system for power supply, wherein the power supply system comprises a test transformer, a protection resistor and a fast protection module; an experiment cavity for containing transformer oil; an electrode system installed in the experiment cavity and used for constructing a uniform electric field oil gap or a non-uniform electric field oil gap; a bubble generating system used for adding bubbles to the oil gap; a partial discharge detection system used for collecting partial discharge signals and analysis; and an optical diagnosis system used for observing the bubble discharge process of the oil gap in the experiment cavity; wherein the partial discharge detection system is further connected with the fast protection module, and is used for outputting signals to the fast protection module when a discharge or breakdown event occurs, so that the power supply system is cut off by the fast protection module.

The application discloses a kind of power battery edge fills edge and examines health evaluation and risk early warning method and system.Intermediate equipment is arranged in the direct current charging loop between charger and battery pack, built-in power MOS tube control loop, synchronous evaluation when charging, actively cut off when high risk, realize " edge fills edge and examines edge protection ".Method realizes early warning by electrical baseline acquisition, controllable MOS direct current load applies current step, direct current impedance online calculation, fixed-frequency 1KHz alternating current impedance detection, communication data monitoring and analysis, charging curve monitoring and multi-dimensional fusion evaluation.System includes power loop control, sampling, load, impedance detection, communication, main control.The application adds active protection type direct current monitoring node between charger and battery, does not disassemble battery to complete edge fills edge and examines synchronously, meets the requirement of alternating current internal resistance detection in " lithium ion battery for electric bicycle Health Evaluation Working Guide", realizes the online evaluation of battery health, BMS and charging interface safety.

The utility model discloses a finished glass product quality detection tool which comprises a workbench and a machine body installed at the upper end of the workbench, a transparent plate is embedded in the outer wall of the front end of the machine body, a limiting strip is arranged on the front side of the transparent plate so as to lift a finished glass product to be detected, and a scanner is arranged on the rear side of the transparent plate and is used for scanning the finished glass product to be detected. A scanner is arranged in the machine body to scan the size of a glass finished product and emit light, an information processing device is arranged in the machine body to process data scanned by the scanner, a controller is fixedly connected to the outer wall of the front end of the workbench, impact force during falling is adsorbed by installing a sponge mat, the damage and scratch risks caused by falling are reduced, and the service life of the glass finished product is prolonged. By reducing the loss caused by falling of the glass finished product, an operator can continue subsequent work more quickly, so that the overall working efficiency is improved, the production period is shortened, meanwhile, the operator can be more relieved, and the glass finished product can be protected quickly.

The application relates to the technical field of stepping motor control, and discloses a current signal acquisition circuit, a method and a stepping motor. The circuit comprises a current detection module, an overcurrent detection module and a reference voltage module; the current detection module is connected in series at the low side of a corresponding driving circuit of the stepping motor, acquires and amplifies a first current signal corresponding to the low side, detects the first current signal and outputs a motor current detection signal; the overcurrent detection module is connected in series at the high side of the driving circuit, acquires a second current signal corresponding to the high side and outputs a corresponding motor fault protection signal; the reference voltage module is connected to the current detection module and the overcurrent detection module respectively, provides a reference voltage for the current detection module and provides a standard driving voltage for the overcurrent detection module. By independently arranging the low-side current detection module and the high-side overcurrent detection module, the inherent contradiction between low-side sampling without protection and high-side sampling with high cost in the prior art is broken, and low-cost design is realized.

This invention relates to the field of marine electrical safety technology, specifically to a high-voltage leakage current protection system for marine propulsion systems. The system includes a dynamic leakage current detection module, a signal processing and control module, a rapid power-off execution module, an environmental adaptability module, and an alarm module. The dynamic leakage current detection module is used to collect the current difference signal, insulation resistance signal, and auxiliary signals of the leakage current protection system in real time. The signal processing and control module is connected to the dynamic leakage current detection module and is used to run a dynamic leakage current detection algorithm to analyze the current difference signal and insulation resistance signal. This invention significantly improves the accuracy and reliability of leakage current detection by setting up dual-channel monitoring and a dynamic threshold algorithm. Combined with rapid power-off and intelligent humidity compensation strategies, it effectively reduces unnecessary downtime and improves system operating efficiency while ensuring safety.

The invention discloses a waterproof and dustproof padlock which comprises a lock body, the lock body is provided with a mounting plane, and a mounting channel penetrating through the mounting plane is formed in the lock body; the lock cylinder is arranged in the mounting channel and does not protrude out of the mounting plane, and a key hole of the lock cylinder is exposed through the mounting channel; the surface cover has the length direction, one end of the surface cover is rotationally arranged on the lock body through a pivot shaft perpendicular to the mounting plane, and a quick dismounting and mounting assembly is arranged between the other end of the surface cover and the lock body; and the sealing piece is arranged on the surface cover and can abut against the mounting plane and seal the port of the mounting channel. When the padlock is not unlocked, the face cover is used for shielding the key hole of the lock cylinder, the face cover is fixed to the lock body through the quick dismounting and mounting assembly so that the sealing piece can seal the end opening of the mounting channel, water or dust can be prevented from entering the lock cylinder from the key hole, the face cover can be rotated till the key hole is exposed when the padlock needs to be unlocked, the lock cylinder can be quickly protected, and the safety of the padlock is improved. The waterproof and dustproof effects are achieved, and long-time normal use of the padlock is guaranteed.

The invention discloses an intelligent monitoring method and system for a new energy intelligent station, and relates to the technical field of new energy station monitoring. The method comprises the following steps: an intelligent edge gateway of an edge node layer acquires multi-modal original data of heterogeneous equipment through a multi-protocol adaptation module; after the edge computing power module executes data cleaning, a real-time AI model is called according to the data type to generate an analysis result through reasoning; the key data is uploaded to a cloud platform layer through a key data channel; and if the result is a fault alarm, the cloud global task scheduling center is triggered to redistribute a calculation task, and the security policy center generates a reinforcement policy and issues a task instruction and a security policy to the edge node layer through the key channel. The technical problems that heterogeneous devices in the new energy station are difficult to access uniformly, data processing delay is large, and fault response is not appropriate are solved, and the technical effect that the stability and maintainability of the whole new energy intelligent station are improved through cooperative work of the intelligent edge gateway and the cloud platform is achieved.

The utility model relates to the technical field of geological disaster monitoring, and discloses a protection device for a geological disaster monitoring facility in a narrow space, which comprises a bottom plate and a plurality of long rods, the opposite sides of two long rods are fixedly connected with a plurality of transverse columns, the two ends of each long rod are fixedly connected with connecting blocks, and the connecting blocks are fixedly connected with the bottom plate. Wherein a motor is fixedly connected to the inner wall of one connecting block, a lead screw is fixedly connected to the output end of the motor, sliding blocks are slidably connected to the inner walls of the long rods, traction rods are fixedly connected to the opposite sides of the two sliding blocks, a protective curtain is arranged on the outer walls of the traction rods, and an opening and closing assembly is arranged at the top end of the bottom plate. According to the utility model, the motor drives the screw rod to rotate, and the screw rod drives the draw bar which drags the protective curtain to slide, so that the protective device can quickly protect the monitoring assembly below in time when rainfall and rockfall occur, the protective curtain is ensured to be reset and rolled through the stress of the coil spring, and the flexibility of the protective assembly is ensured.

This utility model discloses a thermal runaway prevention and early warning device based on multi-physics field signal coupling, including a battery box, a cell module located inside the battery box, a temperature sensor and a gas pressure sensor located inside the battery box, a signal coupling processing module, an alarm light, an electromagnetic pressure relief valve installed on the battery box, a cooling plate attached to the cell module, and a cooling pump connected to the cooling plate. The input end of the signal coupling processing module is connected to the temperature sensor and the gas pressure sensor respectively, and the output end of the signal coupling processing module is connected to the alarm light, the electromagnetic pressure relief valve, and the cooling pump respectively. The device performs real-time monitoring and coupling analysis of the temperature and gas pressure of the cell module, determines the stage of thermal runaway evolution through multi-parameter coupling analysis, and triggers the alarm light, the electromagnetic pressure relief valve, and the cooling pump in stages, while purifying the exhaust gas. This achieves accurate identification, rapid response, and protection against early thermal runaway anomalies, significantly improving the safety, reliability, and intelligence level of the battery system.

This invention provides an inverter overcurrent protection circuit, including a voltage comparator and a voltage adjustable circuit. The negative input terminal of the voltage comparator is connected to an inductor current sampling voltage. The input terminal of the voltage adjustable circuit is connected to an adjustable voltage signal, and the positive output terminal of the voltage adjustable circuit is connected to the positive input terminal of the voltage comparator. The output terminal of the voltage comparator outputs an overcurrent protection signal. The inductor is the output inductor of the inverter, and the inductor current sampling voltage is the voltage obtained by sampling and converting the current flowing through the inductor. The voltage comparator is a comparator or an operational amplifier. When the voltage comparator is a comparator, one end of the comparator's output terminal is connected to a pull-up resistor, and the other end of the pull-up resistor is connected to a pull-up power supply. This inverter overcurrent protection circuit can quickly achieve inverter overcurrent protection, protecting the inverter from damage and improving product reliability.

The invention discloses a color-coated aluminum coil decoiling and cutting-off device which comprises a decoiling machine tool, a cambered surface support is fixedly installed at one end of the decoiling machine tool, and the color-coated aluminum coil decoiling and cutting-off device further comprises a supporting frame fixedly installed on the decoiling machine tool and the supporting frame; the cutting mechanism is used for cutting and transporting the flattened aluminum plate, is mounted on the cambered surface bracket, and comprises a knife rest which is embedded in the cambered surface bracket in a sliding manner; the positioning mechanism is used for positioning the cut aluminum plate and is mounted on the support frame; and the storage mechanism is used for collecting the cut aluminum plates and is mounted at the bottom of the supporting frame. According to the aluminum plate cutting device, an aluminum plate is fixed by the fixing plate through movement of the tool rest, the aluminum plate is cut off by the top cutter and the bottom cutter through gear meshing, the machining stability is guaranteed, and the machining effect is also guaranteed.

The utility model discloses a fast positioning's index plate belongs to index plate technical field, including work board, the upper end center position of work board is provided with index plate main part, and the inside center position of work board is provided with the protective cover switch mechanism, the utility model discloses a protective cover switch mechanism has been set up, can effectively protect index plate main part from the pollution of dust, sundries etc, when not using, and the protective cover main part is lifted through the protective cover switch mechanism, and index plate main part is completely covered and sealed, and the sealing washer further enhances the protection effect, avoids the problem that the index plate precision is reduced and the service life is shortened because of external factors, simultaneously, and the protective cover switch mechanism adopts the design of bidirectional screw rod and adjusting assembly, makes the lifting operation of protective cover main part simple, stable and accurate, and the user is convenient to the protection or use of index plate main part quickly, and the maintenance convenience and service life of index plate have been improved greatly.

The utility model discloses a motor controller and a vehicle, and relates to the technical field of motor controllers, and the motor controller comprises a current acquisition module, a conditioning module, a rectification module, an overcurrent determination module and a control module. The current acquisition module is respectively connected with a motor and the conditioning module, the conditioning module is connected with the rectification module, the rectification module is connected with the overcurrent judgment module, the overcurrent judgment module is connected with the control module, and the control module is connected with the motor. The current acquired by the current acquisition module is filtered, proportionally adjusted and rectified through the conditioning module and the rectifying module, so that the safety is improved; and through the overcurrent judgment module and the control module, rapid adjustment of the motor and rapid protection of the circuit can be realized, and the reliability is prompted.

The invention provides a flexible direct-current transmission line single-end protection method based on first traveling wave full-frequency information. The method comprises the following steps: S101, judging whether an integral value of voltage drop of a line port exceeds a starting criterion threshold value or not; if yes, executing S102; s102, judging whether the fault is a positive direction fault or not; if yes, S103 is executed; s103, based on the fault first traveling wave energy center frequency component and the fault first traveling wave low-frequency-band energy, whether the fault is an intra-region fault or not is judged; if yes, S104 is executed; s104, the polarity of the fault is judged; and starting a protection action. According to the method provided by the invention, two criteria of the energy center frequency and the low-frequency-band energy value are constructed to jointly judge the fault position. And the reverse and forward wave energy and the positive and negative electrode voltage variation are combined to jointly realize quick protection of the power transmission line.

The utility model belongs to eddy current detection probe positioning technical field discloses a kind of nuclear power fastener surface crack eddy current detection probe positioning mechanism, including base, detachably installed magnetic base on base, the top of magnetic base is equipped with vertical guide pillar;Adjusting structure, adjusting structure includes adjusting block, and hand screw knob is threadedly cooperated and connected on adjusting block, and adjusting block is installed on vertical guide pillar by hand screw knob;Angle adjusting disc, angle adjusting disc is installed on adjusting block by bearing, and angle adjusting disc is equipped with a plurality of second positioning hole;Probe clamping mechanism, probe clamping mechanism includes the universal joint of second positioning hole cooperation connection, the other end of universal joint is equipped with eddy current probe clamp, and pre-tightening spring is sleeved in the junction of universal joint and eddy current probe clamp, and magnetic base uses Nd-Fe-B permanent magnet. Probe and curved surface self-adapting fit are realized by eddy current probe clamp, pre-tightening spring and universal joint linkage mechanism, and do not need manual intervention.