338results about How to "Penetrating" patented technology

The invention relates to a control system for a boom sprayer and a spraying compensation control method. The control system comprises a hydraulic and mechanical driving part and an electric control part, wherein the hydraulic and mechanical driving part provides a proportional flow valve and a three-position four-way solenoid valve to control working parameters of the sprayer, such as the liquid pesticide pressure, fan delivery, spraying angle and distance from a spraying head to a crop canopy; the electric control part searches parameters in an optimal control index parameter table to work out the best spraying control parameters in the state according to acquired external information such as two-dimensional natural wind speed, environmental humiture and tool traveling speed; and then PID (Proportion, Integration and Differentiation) feedback control is performed on each parameter; further, an intelligent control method for the optimal control index is provided; a support vector machine is used for nonlinear characteristic modeling of spraying under a dynamic environment, and the optimal control parameter index table is established by using multi-objective optimization and storedin an SD (Secure Digital) card for reading by a spraying master control system; with the adoption of the above spraying control considering the dynamic variation of the natural environment and based on the optimal control parameter index table, the stability of a spraying system is effectively improved, and the spraying effect is ensured.

The invention relates to a passenger luggage security inspection system, in particular to a terahertz imaging passenger luggage rapid security inspection system and a dangerous goods detection method of the terahertz imaging passenger luggage rapid security inspection system. Terahertz rays are focused on passenger luggage by controlling a two-dimensional transversely-moving platform through a computer, and are received by a detector after being reflected by passenger luggage and focused by a lens, terahertz signals are converted into voltage signals, and images are output through the computer after noise reduction and amplification are conducted on the voltage signals. The problems that during X-ray detection, hurts are great, formed images are not clear, luggage simultaneous detection signals interfere with one another, and a detection device is complex in structure, large in occupied area, low in detection efficiency and high in cost are solved. The terahertz imaging passenger luggage rapid security inspection system and the dangerous goods detection method are wide in application range, accurate in detection, small and exquisite in structure, and capable of simultaneously conducting security inspection on passenger luggage, and the potential safety hazards of public places are reduced on the premise of efficient security inspection.

The invention discloses a measurement device for the swing angle of a multi-sling bridge crane. The multi-sling bridge crane comprises a bridge crane trolley provided with first lifting ropes. The measurement device for the swing angle of the multi-sling bridge crane is characterized in that the measurement device comprises a swing angle calculation and control computer, a fan-shaped plane infrared light emitter, a swing angle detection camera, lifting rope vertex markers and a video image processor; the fan-shaped plane infrared light emitter is used for emitting fan-shaped infrared light, and the light encounters one or more of the first lifting ropes, so that light spots are left; the swing angle detection camera is used for shooting images of the first lifting ropes; the video image processor is used for receiving the images of the first lifting ropes and finding the positions of the light spots and the lifting rope vertex markers; the swing angle calculation and control computer, the fan-shaped plane infrared light emitter and the video image processor are arranged on a second lifting rope, and the second lifting rope moves along with moving of the bridge crane trolley; and the swing angle calculation and control computer works out the position coordinates of the light spots and the lifting rope vertex markers, and thus a swing angle value is obtained. By adoption of the measurement device for the swing angle of the multi-sling bridge crane, the swing angle of the bridge crane can be detected accurately, and the measurement device has the advantages of being low in cost and high in antijamming capability.

The invention discloses a human body activity posture monitoring method and system and a human body posture monitor, wherein the method comprises the following steps: receiving a microwave detection signal, wherein the microwave detection signal is a detection signal obtained after performing microwave scanning on a target area; according to the microwave detection signal, judging whether the current activity posture of a preset human body in the target area is in a dangerous posture range, wherein the current activity posture is the action form of the human body at a position at the current time point; and when the current activity posture of the preset human body in the target area is in the dangerous posture range, sending out an alarm signal. According to the human body activity posture monitoring method and system and the human body posture monitor in the invention, the technical problem whether a user is in a dangerous state cannot be determined due to the fact that the activityenvironment with large fog concentration cannot be monitored in the related art is solved.

The invention relates to a fixed grate boiler allowing a square bundle of stalks to be combusted, and in order to solve the problems that conventional boiler allowing a bundle of stalks to be combusted cannot guarantee that the stalks are sufficiently combusted, slag bonding is easy to occur, discharged pollution is high, and the efficiency of the boiler is low. Square water-cooled jackets are arranged all around a pre-combustion chamber, and a part in front of the pre-combustion chamber communicates with a feed opening; an outlet of the pre-combustion chamber communicates with a step combustion chamber which is divided into two-stage combustion chambers, wherein fixed grates are arranged at the lower part of a first-stage combustion chamber; turnover grates are arranged at the lower part of a second-stage combustion chamber; a first-stage primary air chamber is arranged under the fixed grates, a second-stage primary air chamber is arranged under the turnover grates; the total amount of primary air is adjusted through an air inlet regulating baffle, and the first-stage primary air amount and the second-stage primary air amount are distributed through a middle adjusting baffle; secondary air filling nozzles are arranged on two side walls of the step combustion chamber; secondary air reinforcing nozzles are arranged on the front wall of the step combustion chamber, and an inlet of an after-combustion chamber communicates with an outlet of the step combustion chamber. The fixed grate boiler disclosed by the invention is used for heating by peasant households away from heating sources in winter and is used as heat supply heating sources of agricultural greenhouses.

The invention provides a method for recovering zinc from high iron and high lead leaching residue through microwave-ultrasonic wave combination, and belongs to the technical field of microwave and ultrasonic wave applications. The method comprises: taking high iron and high lead leaching residue, adding carbon powder, uniformly mixing, carrying out microwave heating to a temperature of 550-950 DEG C, carrying out constant temperature maintaining for 1-3 h, stopping heating, introducing a N2 protection atmosphere, cooling to a temperature of less than 100 DEG C to obtain after-reduction leaching residue, adding the after-reduction leaching residue to an acid liquid, carrying out ultrasonic wave radiation on the mixed solution at a temperature of 45-85 DEG C to carry out enhancement leaching, carrying out solid-liquid separation to obtain a leaching solution, carrying out subsequent purification on the leaching solution, and recovering metal zinc through electrowinning. Compared to the conventional hot acid leaching, the method of the present invention has the following characteristics that: a leaching time is significantly shortened, a leaching acidity and a leaching temperature are reduced, and 90-98% of zinc can be recovered. With the present invention, the difficult problem of low recovery rate of the high lead and high iron system is overcome, the process is simple, the treatment effect is good, zinc and other valuable metals can be efficiently recovered, and problems of environmental pollution and resource waste caused by stockpiling of a lot of abandoned residue are solved.

The invention relates to the field of artware processing and in particular relates to a method for firing Taoxun which is a musical instrument. The method specifically comprises the following steps of making a blank with the wall thickness of 1-1.5 cm by Nixing pottery clay with the contraction rate of 10-14 percent, forming tone holes in the blank, putting the blank with the tone holes into a firing kiln, and firing the Taoxun in a sealing manner for forming according to a preset technology. According to the method for firing the Taoxun disclosed by the invention, the finished Taoxun product manufactured by the Nixing pottery clay is hard, firm and unlikely to break and has a thick and turbulent sound; the tone is steady, firm and penetrating; the playing requirement of Taoxun can be met.