3results about How to "Realize automatic shutdown" patented technology

The utility model provides an engine shutdown structure based on belt breakage detection at a tensioning wheel. The engine shutdown structure comprises a tensioning wheel mechanism. The detection mechanism is used for being matched with the tensioning wheel mechanism and detecting the belt breakage condition, the detection mechanism comprises a support and a microswitch fixed to the support, and the support is fixed to the tensioning wheel mechanism through bolts; the stopping mechanism is used for controlling starting and stopping of the fuel injection pump and comprises an electromagnet fixed to the fuel injection pump, a linkage pull rod is fixedly arranged at the lower end of the electromagnet, and the free end of the linkage pull rod is connected with a fuel injection pump stopping handle; the power source, the microswitch, the electromagnet and the power source are connected in series through a conductor wire and used for controlling the electromagnet to be powered on and powered off through on-off of the microswitch and achieving linkage of the detection mechanism and the shutdown mechanism, the mechanical broken belt trigger detection and electromagnetic shutdown structure is utilized, millisecond shutdown response can be achieved, automatic shutdown is achieved, and the safety of a belt conveyor is improved. And engine damage caused by belt breakage is avoided, and the shutdown accuracy rate is high.

The invention belongs to the technical field of compound fertilizer production control, and relates to a production process control method of compound fertilizer particles containing humic acid chelated zinc. According to the method, the total amount of a zinc source is distributed to each monitoring period according to a nonlinear decreasing strategy, the feeding rate is determined, and the subsequent feeding rate is reversely corrected by combining the chelating rate change rate and the feeding rate; calculating a chelation rate change rate and a temperature-chelation rate coupling coefficient in real time, and dynamically executing a cooling and speed reducing, rotating speed increasing or pulse stirring and stepped heating synergistic activation mode according to a criterion; and when the change rate of the chelation rate continuously converges, the coupling coefficient maintains positive correlation and the zinc source is completely added, the reaction termination condition is judged by multiple indexes in a combined manner. The method solves the problems that in the prior art, zinc source feeding is not matched with the reaction process, the reaction efficiency is difficult to recover through single parameter adjustment, and the reaction endpoint judgment is lagged, dynamic balance of zinc source supply and the chelating capacity is achieved, and the stability of the product chelating rate is guaranteed.

This invention relates to the field of grain processing control technology, and discloses a rice milling control method and system based on rice processing precision. It aims to solve the problems of existing methods, such as detection lag, poor control precision, and inability to adapt to the processing requirements of new batches of brown rice. The solution mainly includes: acquiring dynamic images of rice milling using an industrial camera and extracting multi-dimensional visual features; extracting initial features of brown rice before milling and retrieving benchmark parameters from a database; dividing the milling stage according to dynamic temporal features and adjusting the sampling frequency; fusing the features through cross-attention and a temporal network to obtain a visual milling index, which is then mapped to processing precision; dynamically predicting the remaining time based on the visual index and benchmark parameters, and automatically stopping the machine when deviation and time conditions are met. This invention achieves in-situ dynamic visual perception and closed-loop adaptive control of the rice milling process, solves the cold start problem in batch-independent scenarios, and significantly improves the consistency of rice milling precision and control efficiency.