4results about How to "Reduce triggers" patented technology

The invention discloses an evaporation film thickness SPC process monitoring feedback adjustment method and device and a storage medium, and the method comprises the steps: building a film thickness result adjustment feedback model based on historical data in combination with an actual rule relation between an actual production film thickness measurement result and a device parameter; considering the stability and risk of equipment and a process, and establishing a film thickness compensation coefficient to ensure the stability of an adjustment result; and after a measurement result is transmitted to the SPC system, the SPC system adjusts a feedback model based on a film thickness result, calculates related parameter suggested adjustment amount, and feeds back and notifies a technologist. According to the invention, based on the historical measurement result and the equipment parameter adjustment result, the film thickness adjustment compensation coefficient model is established, each measurement result provides the film thickness parameter compensation amount, it is ensured that the next film thickness measurement result tends to the target value, and it is ensured that the film thickness can be maintained near the target value in a long time range. Triggering of abnormal film thickness is reduced, occurrence of disqualification and continuous output are reduced, the project yield is prompted, and cost is reduced.

The application discloses a gas circulation reaction control method based on pressure change rate feedforward and related devices, and relates to the technical field of automatic control of chemical processes, and comprises the following steps: acquiring pressure data in real time and calculating a pressure change rate, when the absolute value of the pressure change rate meets a preset trigger condition, determining a target opening degree adjustment amount of a pressure regulating mechanism according to a numerical interval where the pressure change rate is located, and generating a feedforward control instruction, the lead perception of the pressure change trend replaces the dependence of traditional PID feedback control on deviation accumulation, significantly improves the inherent response lag characteristic of the traditional control mode, and effectively reduces the triggering of the equipment surge protection. Meanwhile, when the negative downward pressure change rate meets a preset sudden drop condition, a decoupling compensation instruction is generated to control the gas discharge mechanism to increase the gas discharge amount, thereby realizing the cooperative linkage of pressure regulation and gas discharge, and optimizing the pressure stability of the system under severe fluctuation conditions.

The embodiment of the invention provides a respiratory signal reliability judgment method and device and a storage medium. The method comprises the following steps: calculating first signal quality according to a first breathing signal from a first signal source, wherein the first breathing signal is a physiological signal representing the breathing state of a user; calculating a second signal quality from a second signal from at least one second signal source different from the first signal source, the second signal being a physiological signal different from the first respiratory signal, and determining a reliability of the first respiratory signal from the second signal quality and the first signal quality. Therefore, the reliability of the respiratory signal of the respiratory signal source is verified through the signal of the physiological signal source different from the respiratory signal source, so that accurate monitoring is realized, and the triggering of an apnea false alarm is reduced.

The utility model relates to the technical field of fire-fighting engineering, and discloses a spray head structure for fire-fighting engineering, which comprises a yoke arm seat and yoke arm frames fixed on two sides of the bottom of the yoke arm seat, glass bodies are mounted between the tops of the yoke arm frames and the yoke arm seat through fastening screws, and tooth edges are fixedly connected to the bottoms of the yoke arm frames; the connecting pipe is fixed at the top of the yoke arm seat, a threaded pipeline is arranged at the top of the connecting pipe, and one side of the connecting pipe is fixedly connected with a positioning shell. Firstly, a first protective fence and a second protective fence are mounted in an extension plate through screws, so that the surfaces of a glass body and a yoke arm frame can be protected, triggering of a fire-fighting spraying system caused by collision of external articles is reduced, and the protective fence is mounted on a water conveying pipeline through a threaded pipeline, so that the safety of the fire-fighting spraying system is improved. And then, the connecting pipe can drive the yoke arm seat to be integrally mounted on the threaded pipeline in cooperation with a mounting piece, so that quick mounting is realized, and meanwhile, the maintenance complexity is also reduced.