7results about How to "Sensitive control" patented technology

This application discloses a display panel and a display device. The display panel includes a pixel driving circuit and a light-emitting element. The pixel driving circuit includes a first driving transistor and a second driving transistor. The first driving transistor is coupled between a first power line and a first electrode of the light-emitting element, and the second driving transistor is coupled between the first power line and the first electrode of the light-emitting element. The subthreshold swing of the first driving transistor is greater than that of the second driving transistor. In a first brightness mode, the first driving transistor connects the first power line and the first electrode of the light-emitting element. In a second brightness mode, the second driving transistor connects the first power line and the first electrode of the light-emitting element. The brightness of the light-emitting element in the first brightness mode is greater than that in the second brightness mode. This application can accommodate the different display requirements of the display panel under high and low brightness conditions, thereby improving the display uniformity of the display panel under high and low brightness conditions.

This invention belongs to the field of fluid transmission control and relates to an integrated cartridge-type multi-way valve specifically for pipe jacking machines. It includes a safety control valve assembly, a machine head rotation control valve assembly, a main jacking advance / retreat control valve assembly, a pressurization and flow merging direction control valve assembly, a machine head and main jacking pressurization and flow merging valve assembly, and a correction / relay control valve assembly. Each assembly has approximately the same dimensions and uses cartridge valves to control direction and flow. The cartridge valves employ valve core feedback closed-loop control to improve control accuracy. The pilot oil route for the cartridge valves is provided by a small-diameter three-position four-way directional valve. All assemblies are connected together by sealing rings and long bolts. This invention, by highly integrating the functions of various execution parts of the pipe jacking machine and using cartridge valves as the main valve core control, solves the problems of pipeline accumulation and low control accuracy in the pump station of pipe jacking machines. This significantly improves the construction efficiency of the pipe jacking machine, reduces power loss, makes operation more convenient, and is more suitable for construction in various geological formations.

The intelligent yarn humidifying, heating, sterilizing and disinfecting barrel comprises a barrel body, a base, a barrel cover and a water tank cover, the barrel body is installed at the top of the base, the water tank cover is installed at the top of the base and located at the bottom of the barrel body, and the barrel cover is installed at the top of the barrel body; germicidal lamps, a cooling fan, a cooling fin support and heating cooling fins are arranged in the base, the cooling fin support is installed at the top of the cooling fan, the multiple sets of heating cooling fins are installed on the cooling fin support, the germicidal lamps are arranged on the two sides in the base, and the outer side in the base is provided with an alarm lamp and a temperature and humidity sensing block installation point. The water tank cover is of a rectangular structure, the left end and the right end of the water tank cover are of arc-shaped structures, a heat dissipation hole and a water injection hole are formed in the top of the water tank cover, a humidifier is arranged at the right end of the top of the water tank cover, and a humidifying cover is installed at the top of the The device can independently control the temperature and the humidity to work, the atomizer is adopted to directly atomize water instead of heating the water into water vapor, the efficiency is higher, and the energy consumption is lower.

The utility model relates to a universal liquid level controller, and belongs to the technical field of automatic liquid level control. According to the technical scheme, an analog-to-digital conversion circuit (102) comprises an emitter follower circuit composed of a triode BG1 and a resistor R1 and a follower circuit composed of a triode BG2, a resistor R2 and a capacitor C2, an upper electrode (11) of a liquid level sensor (101) is connected with the input end of the emitter follower circuit, and the output end of the emitter follower circuit is connected with a pin 6 of an NE555 chip; a middle electrode (12) of the liquid level sensor (101) is connected with the input end of the follower circuit, the output end of the follower circuit is connected with a second pin of the NE555 chip, and a lower electrode (13) of the liquid level sensor (101) is connected with power supply voltage. An analog-to-digital conversion circuit and a liquid level sensor in the prior art are replaced by a simple circuit, the design is simple, the number of components is small, control is sensitive, and cost is reduced.

The utility model relates to the technical field of grape planting auxiliary equipment, and particularly discloses a grape bud carving device which comprises a fixed clamping arm which is an arc-shaped support, the fixed clamping arm is hinged to a movable clamping arm through a hinge shaft, and the movable clamping arm can rotate relative to the fixed clamping arm so as to adjust the size of a clamping opening to adapt to grape branches and tendrils with different thicknesses; the fixed clamping arm and the movable clamping arm are each of an arc-shaped structure, and the end, provided with the hinge shaft, of the fixed clamping arm is fixedly connected with the handle rod. According to the grape bud carving device, precise adaptation is achieved through an adjusting structure on a movable clamping arm, a bud carving cutter is slidably connected into a buffer lining through hole of the movable clamping arm, two adjusting threaded rods in a limiting block are rotationally connected with the cutter, when the adjusting threaded rods are rotated, the bud carving cutter slides along the through hole, the bud carving depth is flexibly adjusted, and the bud carving efficiency is improved. Meanwhile, the rotating angle of the movable clamping arm relative to the fixed clamping arm is adjusted through cooperation of a pneumatic corrugated pipe and an arc-shaped sliding rail to adapt to branches and tendrils with different thicknesses.

The invention relates to the technical field of control optimization, and discloses a fishery experiment pH control optimization method, comprising: S1, setting a target pH value of a fishery experiment environment, and inputting a real-time pH value into a pH controller of the fishery experiment; S2, adjusting the proportional coefficient, integral coefficient and differential coefficient of a traditional PID control algorithm by using an improved child learning optimizer, applying the optimized PID control algorithm to the pH controller of the fishery experiment, and obtaining an enhanced pH controller; S3, calculating a pH difference of an experimental environment between a real-time pH value and a target pH value, and inputting the difference into the enhanced pH controller, and outputting a pH control quantity signal; S4, the pH control quantity signal outputs an adjusted concentration control quantity of carbon dioxide through a control quantity signal conversion model, adjusting the carbon dioxide concentration of the fishery experiment environment, returning to execute S1-S4 to monitor the real-time pH value, adjusting the pH control quantity signal, and quickly and accurately reaching the target pH value.