挂脖风扇

Fish collecting and luring device suitable for hydropower station tail water channel

The invention provides a fish collecting and luring device suitable for a hydropower station tail water channel, the fish collecting and luring device is arranged in a backflow area in the hydropower station tail water channel, the fish collecting and luring device comprises a fish collecting groove fixed on a bank slope of the backflow area, one end of the fish collecting groove is connected with a horn-shaped fish inlet, and an opening of the horn-shaped fish inlet faces the downstream of the tail water channel. A fish inlet is formed in the side wall of the other end of the fish collecting groove, a fish collecting box is arranged at the position, close to the middle, of the fish collecting groove, fish collecting channels are arranged on the two sides of the fish collecting box in the directions of the fish inlet and the horn-shaped fish inlet, and inverted tassels are arranged on the two fish collecting channels. The fish collecting and luring device is arranged at the specific position ...

Visually impaired person route planning method based on weighted undirected graph

The invention discloses a visually impaired person route planning method based on a weighted undirected graph. The method comprises the following steps: 1, constructing a road database and collecting a road data set; 2, abstracting roads into a weighted undirected graph; 3, acquiring an optimal navigation route according to the information of the weighted undirected graph; 4, assisting the visually impaired person to pass through a traffic light intersection based on the target detection network; and 5, correcting the track after the user deviates from the road, and sending out a prompt. According to the method, information such as the length, the width, the category and the human traffic of the road can be synthesized, so that a route with good road condition and short distance is recommended for the visually impaired people, and safe travel of the visually impaired people can be guaranteed.

Machining clamping device based on electric power production

The invention relates to the technical field of machining clamping, and discloses a machining clamping device based on electric power production, which comprises a mounting box, a fixing device is arranged in the mounting box, the fixing device comprises a disc, and a power part is arranged below the disc; the power part comprises a rope roller, a first rotating shaft and a worm wheel. According to the machining clamping device based on electric power production, by arranging a motor, a worm, a first magnet, a second magnet, a second sliding rod, a worm gear, a first rotating shaft, a rope roller, a first sliding rod, a first pull rope and a clamping plate, the motor is started, an output shaft of the motor drives the worm to rotate, and the worm gear, the first rotating shaft and the rope roller are driven to rotate synchronously; the rope roller drives the first sliding plate and the second sliding plate to move through the first pull rope, the second sliding plate drives the clamping ...

Built-in energy self-supply device for underwater unmanned vehicle

The invention discloses an energy self-supply device of an unmanned underwater vehicle. The method is realized by arranging a tidal current energy water turbine in a cabin body at the tail part of the vehicle, and mainly by arranging a drainage pipeline at the tail part of the cabin body and installing an ocean current energy power generation device in the drainage pipeline, the unmanned underwater vehicle is charged. Ocean current enters an inner cavity of a rudder through a front edge opening of a 45-degree rudder at the tail of the underwater vehicle and then enters a drainage pipeline in a tail cabin, so that blades of an ocean current energy power generation device installed in the drainage pipeline are driven to rotate, a power generator is driven to generate electric energy and store the electric energy in a storage battery, and then energy is supplemented for the underwater unmanned vehicle. According to the invention, ocean current energy can be effectively converted into electric ...

Collision early warning method based on image target detection and visual depth estimation

The invention discloses a collision early warning method based on image target detection and visual depth estimation. The method comprises the following steps: 1, acquiring a depth image and a color image from a camera; 2, obtaining the detection information of the target based on the color image, and tracking the target; 3, performing depth estimation and orientation estimation on the visual target to form target depth and orientation information; 4, forming a to-be-detected sequence according to the target depth and the target detection result; and 5, carrying out collision early warning on the target according to the to-be-detected sequence. According to the invention, the motion information of the target can be detected in real time, and the motion state of the moving object target can be accurately judged to give collision early warning information, so that the travel safety of visually impaired people can be guaranteed.

Small-current grounding fault segment selection method and device, electronic equipment and storage medium

The embodiment of the invention provides a low-current grounding fault segment selection method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining an AC parameter of a transformer substation when the small-current grounding fault of the transformer substation is detected; the alternating current parameters comprise a local side three-phase current value and an opposite side three-phase current value; calculating split-phase longitudinal differential current according to the local-side three-phase current value and the opposite-side three-phase current value; calculating inter-phase differential flow according to the split-phase longitudinal differential flow; and determining a single-phase earth fault line section according to the inter-phase differential current. According to the embodiment of the invention, the single-phase grounding fault can be accurately detected, so that section selection positioning and nearby isolation of the small-current ...

Fishway with movable partition plate

The invention discloses a fishway with a movable partition plate, and belongs to the field of construction of fish passing facilities in water conservancy and hydropower engineering. Comprising a fixed wing plate, a movable partition plate, a pushing rod bearing bush, a pushing ball head, a hydraulic pushing rod, a pushing rod shaft, a fixed wide partition plate and an energy dissipation baffle. The novel fishway has the beneficial effects that the novel fishway can help fishes with different swimming capacities to pass through a dam, and the passing time of the fishes is shortened.

Cushion pad for auxiliary fascia console armrest and auxiliary fascia console armrest

The utility model relates to a cushion for an auxiliary instrument panel handrail and the auxiliary instrument panel handrail. The buffer pad comprises a buffer upper part, a buffer lower part and a limiting part; a groove arranged in the horizontal direction is formed between the buffering upper portion and the buffering lower portion, and the opening end of the groove faces the inner plate. The limiting part is located in the groove, and the limiting part is provided with a clamping protrusion in the Y-axis direction; and the buffer pad is made of an elastic soft material. The arrangement position of the buffer cushion is more flexible, installation is more convenient, and meanwhile stable supporting of the auxiliary fascia console handrail can be achieved. The buffer pad and the buffer pad mounting part are simple in structure and low in assembly precision, so that industrial large-batch processing and production are facilitated.

Low-vibration low-flow-resistance axial flow pump guide vane optimization design method

The invention discloses a low-vibration low-flow-resistance axial flow pump guide vane optimization design method, which is characterized in that the traditional axial flow pump vane profile design is improved, and a guide vane airfoil profile which simultaneously meets the vibration performance and the self-flow performance is designed through a low-vibration design principle and a low-flow-resistance design principle; curve research point design is conducted according to the flow direction installation angle of the middle flow surface airfoil of the guide vane, positioning control over the vibration performance and the self-flow performance is conducted on different flow direction positions in a targeted mode, and the airfoil design of the guide vane synchronously meets coordinated control over low vibration and low flow resistance. The vibration performance and the self-flow performance of the model are verified, and the guide vane model of the low-vibration and low-flow-resistance axial ...

A photosensitive resin and its synthesis method

... 本发明涉及树脂合成领域，具体涉及种感光性树脂及其合成方法。所述感光性树脂的合成方法包括以下步骤：a)准备由含有个双键的单体A与含有个双键的酸酐B共聚得到的树脂C；b)加入含有活泼羟基的光敏剂D与树脂C中的酸酐反应，得到组合物E；c)任选地加入含单羟基的化合物G对E中剩余的酸酐开环；d)加入同时含有个双键和个环氧基团的单体F，反应得到感光树脂。按照上述方法得到的树脂可以单独使用，也可以和其他感光性树脂或活性单体配合使用，不需要额外添加光敏剂，就可以在紫外光的照射下交联固化。 ...

Chlorine dioxide gas synthesis device

The utility model discloses a chlorine dioxide gas synthesizer which comprises a synthesizer body, a feeding mechanism, a synthesizing mechanism and a storage mechanism, the synthesizer body is a hollow cavity, the top wall of the synthesizer body is provided with a feeding port, and the side wall of the synthesizer body is provided with an observation window. The feeding mechanism is arranged in the synthesis device body, the feeding mechanism comprises a material storage cavity, a discharging valve, a measuring cylinder and a feeding valve, the material storage cavity is arranged below the feeding port, the material storage cavity is a hollow cavity with an opening in the upper end, the measuring cylinder is arranged below the material storage cavity, and the measuring cylinder is arranged on one side of the observation window. The utility model belongs to the technical field of chlorine dioxide synthesis equipment, and particularly provides a chlorine dioxide gas synthesis device which ...

Self-feedback monitoring system for improving fish passing efficiency of fishway

The invention discloses a self-feedback monitoring system for improving the fish passing efficiency of a fishway. The self-feedback monitoring system comprises a fishway monitoring system, a fishway outlet gate and a control system thereof, a fishway controllable energy dissipation baffle and a control system thereof, and an automatic control effective value set of the fishway outlet gate and the fishway controllable energy dissipation baffle. Belongs to the field of fish passing facility construction of water conservancy and hydropower engineering, and provides a self-feedback monitoring system for improving the fish passing efficiency of a fishway, so that the fishway can help blocked fish bodies to pass through fishway vertical seams through monitoring and automatic scheduling.