6results about How to "Real-time protection" patented technology

The invention provides a real-time monitoring device and method applied to the state of an insulator of an electric control cabinet. The real-time monitoring method comprises the following steps that the current environment temperature detected by a controller is obtained; whether the current environment temperature is lower than a preset temperature threshold value or not is judged, and when it is monitored that the environment temperature is lower than the preset temperature threshold value, an insulator in the electrical cabinet works normally; when the environment temperature is higher than the critical temperature, a fan is started for cooling, and when the environment temperature is higher than a preset temperature threshold value and lower than the critical temperature, the magnitude IR of leakage current is calculated; the leakage current IR of the corresponding insulator under different air humidity conditions is calculated; whether the leakage current IR reaches the critical value of the safety leakage current Is or not is judged, and alarm information is given out according to the judgment result. Therefore, long-term safe operation of the electric control cabinet in special environments such as ships and the like is guaranteed through the synergistic effect of active regulation and control of temperature and humidity, accurate monitoring of leakage current and timely alarm of abnormity.

The invention relates to the field of submarine cables, and discloses an armor layer shape correction mechanism and an operation device, the armor layer shape correction mechanism comprises a repair ring, the repair ring comprises an upper shell and a lower shell, and the upper shell and the lower shell form a ring shape; the multiple monitoring pieces are installed on the inner wall of the upper shell and the inner wall of the lower shell respectively; the vertical projection of the monitoring piece on the inner wall of the upper shell does not coincide with the vertical projection of the monitoring piece right opposite to the inner wall of the lower shell; through the synergistic effect of the monitoring strain gauges, the elastic pieces, the buckles and the grooves and in combination with the special layout of the monitoring pieces, real-time, accurate and reliable pressure monitoring and overload protection of the armor layer shaping process are achieved, and finally high quality, high reliability and high efficiency of shaping work are ensured.

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 utility model provides a kind of side direction measuring head structure of processing machine head, belong to machining technical field, including fixed frame, the fixed frame side wall top is equipped with driving motor by bolt, fixed frame one side is provided with processing assembly, processing assembly is used to process workpiece, fixed frame one side is provided with measuring assembly, measuring assembly is used to measure the height of workpiece, the measuring assembly includes mounting bracket, the mounting bracket is installed in the sliding plate side wall by bolt, the mounting bracket top is equipped with fixed plate by bolt, the fixed plate top is equipped with pneumatic cylinder by bolt, the pneumatic cylinder output end is installed with sliding block, the sliding block top is installed with dust cover, the sliding block bottom is equipped with fixed block by bolt, fixed block is equipped with measuring head main part by being arranged in the installation, the utility model is equipped with measuring assembly, measuring structure does not affect normal processing, and the driving structure of measuring head main part can also be protected in real time.

This invention provides a wind turbine safety control and protection method based on blade vibration signals. It uses blade acceleration sensors to acquire acceleration signals during blade operation, extracts frequency domain features and time domain features from the acceleration signals, and compares the feature values ​​with fault thresholds. When the threshold is exceeded, a warning or fault alarm is issued. By connecting the blade acceleration signals to the wind turbine control system, they directly participate in the control and protection of the unit, significantly improving the unit's risk resistance and safety.

The utility model discloses a guide rail anti -iron filings abrasion's numerical control machine tool belongs to numerical control machine tool technical field, including the casing, the inside setting of casing has the guide rail, both sides of guide rail top are slidably installed with big slide plate, both sides of guide rail top are provided with the splash guard, wherein two splash guards are located between two big slide plates, the splash guard includes the fixed mounting on two big slide plates and adds the plate, and one big slide plate is fixedly installed with four additional plates, and the other two additional plates are fixed on the same side of another big slide plate. The utility model discloses through adopt setting up the rubber sleeve of flexible disassembly, the arbitrary telescopic of can on the guide rail, and the rubber sleeve can contract and expand according to the machine work, avoids the chip to fall on the guide rail on the basis of guaranteeing the normal work of machine, avoids the abrasion of chip to the guide rail, improves the precision of workpiece processing and the service life of lathe.