7results about How to "Reduce detection blind spots" patented technology

The invention relates to the technical field of coal mine safety detection equipment, and provides a mining intrinsic safety type aerial fog spraying controller which comprises a rod tail seat, the top of the rod tail seat is connected with a telescopic rod piece, the top of the telescopic rod piece is connected with a handle pipe, the outer side of the handle pipe is connected with a handle cover, and the top of the handle pipe is connected with a first mounting plate. The two ends of the top of the first mounting plate are connected with connecting rods, the tops of the two connecting rods are connected with a shell, the outer side of the shell is connected with a control panel, a gas cylinder is connected between the two connecting rods, the top of the shell is connected with a second mounting plate, one end of the top of the second mounting plate is connected with an electromagnetic valve, and the outlet end of the electromagnetic valve is connected with a movable connector. The outlet end of the movable connector is connected with a smoke outlet nozzle, and the other end of the top of the second mounting plate is connected with a heating head. The technical defects of a traditional aerial fog spraying controller are comprehensively overcome through the height-adjustable telescopic rod piece, the direction-flexible spraying head, the uniform heat source design, the real-time monitoring system and safe and portable operation.

The invention discloses a three-dimensional ground penetrating radar dispersive medium discontinuous finite element forward modeling method and system and a storage medium, and the method comprises the following steps: S1, building a forward modeling model, and setting parameters at a boundary; s2, inputting parameters, and setting the positions of an excitation point and a receiving point; s3, performing mesh generation on the three-dimensional dispersive medium model; s4, solving numerical flux of six components of the three-dimensional electromagnetic field; s5, updating an auxiliary field variable of the three-dimensional area; s6, updating electromagnetic field components of the whole region; s7, time steps are added, and the steps are repeated until three-dimensional forward modeling simulation of the current time step is completed; s8, repeating the steps until all excitation is completed; and S9, outputting the data. According to the method, the three-dimensional full-region electromagnetic field evolution calculation logic is optimized, and the multi-scale modeling requirement of a large-scale complex underground structure is met. The finally output three-dimensional radar profile can present the depth, form and spatial distribution of the underground target in a three-dimensional manner, and detection blind areas are reduced.

This utility model relates to an automated spectral detection device for coated film layers, comprising a frame and a conveyor belt rotatably mounted on the frame via two rollers. A U-shaped frame is mounted on the frame, and a spectrometer is mounted on the U-shaped frame via a swing assembly. A drive assembly is mounted on the frame, and the drive assembly is connected to the swing assembly and rollers via a transmission structure and a linkage assembly. When the drive assembly is running, the swing assembly and rollers will run alternately to achieve mutual coordination between the conveyor belt and the spectrometer. Through its unique structural design, this utility model realizes the automated reciprocating swing of the spectrometer, which allows the spectrometer to automatically change its detection angle, effectively reducing the detection blind zone at the edge of the coating and improving the comprehensiveness and accuracy of the detection. At the same time, the linkage between the drive assembly, rollers, and swing assembly realizes the coordinated work of the conveyor belt and the spectrometer, improving the detection efficiency.

The utility model discloses a kind of intelligent dimming control device based on human body response, by adopting double pyroelectric infrared sensor, each is equipped with independent fresnel lens, both can be arranged in different positions or angle cooperative work, can cover more wide space area, effectively reduce detection blind area, independent fresnel lens can be designed according to sensor position and detection demand pertinence, adjust focal length, viewing angle and the like parameter, make sensor accurate receiving human infrared radiation, optimize for different direction and distance human activity, improve detection sensitivity and accuracy, whether there is human existence according to whether the signal strength output by human body response module exceeds the set threshold value by microcontroller module, this kind of judgment based on signal strength is more accurate, LED load module receives the electric energy and PWM signal of dimming drive module, according to the duty ratio change luminous brightness of PWM signal, can realize the smooth and accurate regulation of LED light brightness, provide more intelligent, comfortable lighting experience for user.

The utility model belongs to the field of light radiation test technology especially relates to radiation test system, including work table, rotary table, clamping mechanism, support column, lifting mechanism, test antenna, be equipped with rotatable rotary table on work table, the centre of rotary table is equipped with positioning hole, rotary table still is equipped with clamping mechanism, is used for clamping the lamp to be measured, makes the lamp to be measured axis perpendicular to positioning hole axis, work table one side is equipped with support column, be equipped with lifting mechanism on support column, the lifting end of lifting mechanism is connected with an installation frame, and test antenna is installed on the installation frame, makes test antenna towards clamping mechanism. Adjust the ground clearance of test antenna through lifting mechanism, can ensure that the light emitting surface center of lamp to be measured and test antenna keep the same horizontal plane, improve the precision of radiation detection. Then rotate rotary table again, adjust the light emitting angle of lamp and the height of lifting test antenna, capture the maximum radiation value of lamp space distribution, ensure the accuracy of test, reduce the detection blind area.

The buried oil tank comprises an outer tank body, the outer side of the outer tank body is fixedly connected with a lifting lug, an inner tank body is arranged in the outer tank body in a sleeved mode, the outer side of the outer tank body is fixedly connected with a manhole opening, the outer side of the outer tank body is fixedly connected with a guardrail, the outer side of the outer tank body is fixedly connected with a climbing frame, and a containing groove is formed in the side face of the climbing frame. The climbing frame is fixedly connected with the first buckle, the bottom of the climbing frame is fixedly connected with the supporting legs, an arc-shaped support is arranged on the climbing frame and fixedly connected with the crawling ladder, the outer side of the arc-shaped support is fixedly connected with the clamping plate, and a sealing cover plate is arranged on the outer side of the manhole opening. A constructor can conveniently climb to the top of the outer tank body through the crawling ladder and the climbing frame, the constructor can conveniently enter the inner tank body through the convenient disassembly and assembly of the crawling ladder and the climbing frame, the maintenance difficulty of the constructor is reduced, the working efficiency is improved, and the rotating plate is rotated through the motor, so that the optical fiber sensor is rotated; the detection range of the fiber sensor is effectively expanded and detection dead angles are reduced.

A kind of optical cable surface detection device, including pedestal and being provided with primary detection mechanism and secondary detection mechanism in top, primary detection mechanism includes primary detection base and primary detection mould, mould placing groove is recessed on primary detection base, and first optical cable transmission through-hole is opened in the center of groove bottom, primary detection mould is placed in mould placing groove and is provided with optical cable detection through-hole in the center, secondary detection mechanism includes secondary detection base and multiple detection components, secondary detection base is provided with second optical cable transmission through-hole, multiple detection components are evenly distributed and are arranged on secondary detection base, one end is fixedly connected with secondary detection base, the other end is inserted into secondary detection base and is connected with detection abutting piece by elastic expansion component.The primary detection mechanism in the application carries out rough detection to optical cable surface, is used to filter the larger bulge on optical cable surface, multiple dynamic detection wheels in secondary detection mechanism are arranged in phase and are closely combined with optical cable surface to carry out fine detection, and detection coverage is wide.