20 results about "Electric fish" patented technology

The application provides a fish blocking system for a tailrace tunnel of a hydropower station and a fish blocking method thereof, and relates to the technical field of fish blocking systems. The fish blocking system comprises a main pulse electric fish blocking frame, a secondary pulse electric fish blocking frame and a fish blocking pier. The main pulse electric fish blocking frame is arranged in front of the tailrace tunnel. The secondary pulse electric fish blocking frame is arranged inside the tailrace tunnel. The protruding fish blocking pier is arranged in front of the tailrace tunnel and between the main pulse electric fish blocking frame and the secondary pulse electric fish blocking frame. The main pulse electric fish blocking frame and the secondary pulse electric fish blocking frame each comprise a plurality of pulse electric poles arranged side by side. The plurality of pulse electric poles arranged side by side are arranged on a connecting crossbar to form the pulse electric fish blocking frame. The inner inclined surfaces of the fish blocking pier towards the main pulse electric fish blocking frame and the secondary pulse electric fish blocking frame are respectively provided with a second fish detector and a first fish detector. The fish blocking system is provided with a double-pulse electric fish blocking frame structure to prevent fish from entering the tailrace tunnel, so that the fish are prevented from being injured or killed in the water flow downstream of the hydropower station.

The utility model discloses a live fish temporary rearing basin, relates to the technical field of fishing devices, and aims to solve the problems that a simple fish basin is difficult to operate and an electric fish basin has potential safety hazards. Comprising a mounting base, a fish containing basin and a pedal, the fish containing basin and the pedal are hinged to the two ends of the mounting base respectively, a fish pouring opening is formed in the end, away from the pedal, of the fish containing basin, one end of the pedal extends to the position below the fish containing basin, and the other end of the pedal extends obliquely upwards. The live fish temporary rearing basin is simple in structure and convenient to use, and safe fish pouring operation can be achieved only by pedaling.

The utility model discloses an electric fish knife. The electric fish knife comprises a blade part and a knife handle part, the cutter handle part comprises a driving module, a turbine transmission module and a blade pushing mechanism; the blade part comprises a first blade and a second blade; the first blade and the second blade are parallel to each other, and one end of the first blade and one end of the second blade are connected with the blade pushing mechanism. The blade pushing mechanism is connected with the two sides of the turbine transmission module. And the driving module is used for driving the turbine transmission module to drive the first blade and the second blade to do reciprocating motion. The electric fish knife is compact in overall structure, staggered reciprocating motion of the first blade and the second blade is achieved through the turbine transmission module, and cutting efficiency is high. And the driving module can be in a plug-in type or can be powered by a battery, so that the flexibility is high. And meanwhile, the unlocking assembly and the safety button are designed, so that the overall safety and controllability are improved.

The utility model discloses a kind of multi-angle detection electric fish signal's anti-electric fish early warning device, it is related to ecological environment protection field.Device includes control box, main control unit, current transformer, detection circuit board, 5G communication module, GPS and power module are placed in control box, top embedded antenna, bottom built-in float plate, outer sleeve fixing ring;Central below fixing ring is connected with telescopic rope, connection between cast iron anchor is realized through screw thread cooperation below telescopic rope, round table locking bolt is provided in cast iron anchor middle distance;Control box circular outer wall every 60 ° is set with one slot, 6 slots are set in total, weld six lead grooves, current probe is fixed in each slot by button lock weight, and sealed with sealing buckle.Every 2 current probes as a group detection channel in same line opposite side, device can realize 3 groups different angle current signal response, get multiple detection data through mutual inductor and detection circuit board, process discernment by main control unit, realize multi-angle electric fish signal early warning effect.

The application discloses a kind of electric fish signal detection methods based on mel cepstrum and multilayer perception machine, belong to electric fish signal detection field, comprising: first, the sound emission signal generated by underwater discharge is collected, pre-processing is carried out by pre-emphasis, framing and windowing to improve signal-to-noise ratio;Subsequently, the mel frequency cepstrum coefficient feature of signal is extracted, and is optimized by first-order and second-order difference calculation, and is fused to form a feature parameter set with static and dynamic characteristics;Finally, the feature parameter and detection voltage value are input into multilayer perception machine neural network for nonlinear fitting, and the high-precision electric signal strength is reconstructed.The application effectively utilizes the sound emission signal feature, and significantly improves the sensitivity and confidence of underwater electric fish signal detection.

1. Name of the product in this design: Electric fish tank brush. 2. Purpose of this design: For cleaning fish tanks. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

1. Name of the product in this design: Electric fish scaler. 2. Purpose of this design: A machine for scraping fish scales. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

1. The name of the design product: electric fish knife. 2. The use of the design product: the design product is used for cutting articles. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

The invention discloses an electric fish signal detection method based on Mel-cepstrum and a multilayer perceptron, and belongs to the field of electric fish signal detection, and the method comprises the steps: firstly collecting an acoustic emission signal generated by underwater discharge, and carrying out the preprocessing of pre-emphasis, framing and windowing, so as to improve the signal-to-noise ratio; then extracting Mel-frequency cepstrum coefficient characteristics of the signals, and performing first-order and second-order difference calculation optimization and fusion to form a characteristic parameter set with static and dynamic characteristics; and finally, inputting the characteristic parameters and the detection voltage value into a multi-layer perceptron neural network for nonlinear fitting, and reconstructing high-precision electric signal intensity. According to the method, the acoustic emission signal characteristics are effectively utilized, and the sensitivity and the confidence coefficient of underwater electric fish signal detection are remarkably improved.

1. The name of the design product: electric fish scale machine (Y4). 2. The use of the design product: for shaving fish scales. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

1. The name of the design product: electric fish scaler (U6). 2. The use of the design product: for electric fish scaler. 3. The design points of the design product: in the combination of shape and pattern. 4. The picture or photo that best shows the design points: perspective view 1.

To enable efficient removal of scales from the surface of the fish's body. [Solution] An electric fish scale remover 1 for removing fish scales (S) comprises a main body 2 having a motor 2a, a rotating part 3 that is rotationally driven by the motor 2a, and a plurality of wing parts 4, ..., 4 that are spaced apart from each other in the circumferential direction of the rotating part 3 and protrude radially outward. Each of the wing parts 4, ..., 4 has a first end face (E1) that can be brought into contact with the fish body surface (F) when the rotation axis direction is perpendicular to the fish body surface (F) when rotated, and a first corner part (C1) provided at the circumferential end of the first end face (E1), wherein the outer contour viewed along the radial direction is bent perpendicularly or at an acute angle from the first end face (E1).

1. The name of the design product: electric fish scaler. 2. The use of the design product: the design product is used for scraping fish scales. 3. The design points of the design product: the combination of shape, pattern and color. 4. The picture or photo that best shows the design points: perspective view 1. 5. The design claimed contains color. 6. A is transparent material.

The application discloses a kind of illegal fishing behavior identification warning method, device, equipment and medium.The method comprises: real-time acquisition of the monitoring video frame of monitored water area is input into prediction model;Prediction model is obtained according to the monitoring picture and derived monitoring picture training;According to the target detection frame, target category and confidence score of the monitoring video frame output by prediction model, identify three kinds of illegal fishing behavior of electric fishing, scoop fish, one person multi-rod fishing;Using ByteTrack target tracking algorithm, track three kinds of targets in monitoring video frame, i.e., electric fisher, scoop fisher and one person multi-rod fisher, obtain the tracking ID and trajectory of each target within a preset time period;If the tracking ID and trajectory of each target trigger a preset alarm condition, an illegal fishing alarm is issued.The technical scheme of the embodiment of the present application can identify illegal fishing behavior in complex water area in real time, and realize intelligent alarm, improve the identification accuracy of illegal fishing behavior.

The invention provides a fish collecting work ship for hydraulic engineering operation, which comprises a ship body and an electric fish blocking system, and the electric fish blocking system comprises a fish blocking electric grid group and a pulse voltage generating device; the fish blocking electric grid set comprises a first fish blocking electric grid arranged close to the river bank area and a second fish blocking electric grid arranged close to the river reach middle area of the ship body. The pulse voltage generating device is electrically connected with the first fish blocking electric grid and the second fish blocking electric grid and used for outputting first pulse voltage to the first fish blocking electric grid and outputting second pulse voltage to the second fish blocking electric grid. The voltage value of the first pulse voltage is larger than that of the second pulse voltage, so that fishes are concentrated in the middle area of the river reach close to the ship body through the voltage gradient formed by the first fish blocking electric grid and the second fish blocking electric grid. The fish collecting work ship for hydraulic engineering operation can effectively collect fishes, meanwhile, the fish collecting effect cannot be affected by river channel sundries, laying and recycling are convenient, and deepwater net foils can be effectively replaced.

1. The name of the design product: electric fish scaler. 2. The use of the design product: for fish scale scraping. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The invention provides an offshore fishery electric fishing boat space-time cooperative scheduling method and device, and the method comprises the steps: determining fishery energy demands according to the basic data of each fishery and the power initial state of fixed energy storage; determining a fishing boat resource state according to the fishing boat resource parameters of the electric fishing boat; determining a scheduling objective function according to the operation benefits of all the electric fishing boats and the source load unbalance degree of all the fishing grounds; determining constraint conditions of the electric fishing boat according to the fishing boat resource parameters of the electric fishing boat; according to the fishing boat resource parameters of the electric fishing boat, the constraint conditions of the electric fishing boat and the power parameters of the fixed energy storage, determining the power balance constraint of the fishing ground; and adopting a mixed integer programming solving method to obtain an optimal scheduling strategy based on the fishery energy demand, the fishing boat resource state, the scheduling objective function, the constraint condition of the electric fishing boat and the power balance constraint of the fishery. The optimal scheduling strategy is obtained by adopting a mixed integer programming solving method, and the operation benefit of the electric fishing boat and the source load balance of the fishing ground are both considered.

The utility model discloses an electric fish killing serrated knife with a mechanical button protection device. The electric fish killing serrated knife comprises a blade, a transmission device, a motor module, a circuit module, a battery, a button device, a left leather sheath, a right leather sheath, a left machine shell, a right machine shell and a buckle device. Wherein the left machine shell and the right machine shell are installed together to form a cutter handle frame of the electric fish killing serrated cutter, the motor module and the circuit module are installed in the cutter handle frame, the input end of the motor module is connected with the circuit module, the transmission device is installed at the output end of the motor module, the cutting edge is installed on the transmission device, and two blades of the cutting edge are driven by the transmission device to reciprocate. The cutting function is achieved; the battery supplies power to the circuit module, and the button device controls operation of the motor module. The button device is provided with a mechanical button protection device used for locking the button device. The mechanical button protection device is used for locking the button device, the safety of a user is effectively protected, and the button protection device is simple in structure, high in reliability, easy to operate, convenient to carry and high in practicability.

The invention provides a fish collecting work ship for hydraulic engineering operation, which comprises a ship body, an electric fish blocking system and a fish blocking electric grid folding and unfolding system, the electric fish blocking system comprises a fish blocking electric grid group and a pulse voltage generating device, and segmented pulse voltage is applied to fish blocking electric grids in different areas in the fish blocking electric grid group; the fish blocking electric grid group comprises a fish blocking electric grid and a cable, and the fish blocking electric grid is connected to the cable; the fish blocking electric grid retracting and releasing system comprises a shell and a driving assembly, the driving assembly comprises a guide driving shaft and a guide driving plate, the guide driving shaft is arranged in the center of the shell, the guide driving plate is fixedly connected to one end of the guide driving shaft, and one end of a cable is wound around the guide driving shaft. And the guide driving plate can drive the fish blocking electric grid group to be retracted into the shell or released from the shell. According to the fish collecting work ship for hydraulic engineering operation, fish can be effectively collected, the fish blocking electric grid set for fish collecting can be rapidly collected and released, meanwhile, the fish collecting effect cannot be affected by river channel sundries, laying and recycling are convenient, and deepwater net foils can be effectively replaced.

This invention discloses a sensing and detection structure and a sensing and detection device. The sensing and detection structure includes a sensing unit layer, on which a first sensing unit and multiple second sensing units are provided. The first sensing unit forms an installation area, and a first transmitting electrode and a first receiving electrode are arranged in a stacked manner around the installation area. Multiple second sensing units are arranged in an array within the installation area. Each second sensing unit includes a second transmitting electrode and a second receiving electrode arranged in a stacked manner. By setting up the first sensing unit and the second sensing units, corresponding signal acquisition structures can be set up respectively to collect the distance detection information of the first sensing unit and the detection information of the second sensing unit, which helps to reduce the amount of information collected and thus reduce the delay of the sensing and detection structure. This solves the problem of excessive delay caused by excessive information collection in electric fish sensors.