Abstract: A flexible display panel and a preparation method therefor, and a display device and a display module are provided. The flexible display panel includes a planar area, a first bending area, a second bending area and a corner bending area. The corner bending area is connected to a corner of the planar area and is connected between the first bending area and the second bending area, and is provided with a plurality of first hole groups, where the corner bending area is bent with a width of a first hole group in middle of the corner bending area increasing and a width of a first hole group in an edge area on a side of the corner bending area away from the planar area decreasing.

Abstract: A pixel driving circuit is provided. The pixel driving circuit includes a light emission control circuit and a drive circuit. The light emission control circuit controls a potential of a control terminal of the drive circuit under the control of a coupled signal terminal, and the drive circuit drives a coupled light-emitting element to emit light based on the potential of the control terminal thereof. The drive circuit includes two drive transistors connected in parallel, and subthreshold swings of the two drive transistors are different.

Abstract: A display substrate includes a display region and a binding region located on one side of the display region, the display region includes a display structure layer, a protective layer provided on the display structure layer and a reflective layer provided on the protective layer, and the display structure layer includes a drive structure layer, a light-emitting structure layer and an encapsulating structure layer stacked on a base; the binding region includes a binding structure layer, a protective layer provided on the binding structure layer at one side of the binding region close to the display region, and a reflective layer provided on the protective layer, and the binding structure layer includes a lead wire structure layer provided on the base, a binding pad provided on the lead wire structure layer and an inorganic encapsulating layer.

Abstract: The present disclosure discloses a preview-image display while a terminal device photographs a picture. The method comprises: obtaining, by a terminal device, a first preview image and a second preview image, wherein the first preview image is based on a current picture in a first mode and the second preview image is based on the current picture in a second mode; and displaying, by the terminal device, a first part of the first preview image and a second part of the second preview image in a preview area, wherein the first part of the first preview image and the second part of the second preview image constitute a third preview image based on the current picture.

Abstract: A fixed permeable breakwater which also serves as a wave power generating device is provided and includes a structure, a structure fixing device and a wave-activated generator set, the structure is connected with a seabed through the structure fixing device, holes are arranged on an outer side of upper arc vertical walls of the structure, and spiral vane sets are placed in the holes; a spiral-gear generator is installed on the horizontal bearing plate, and waves push the spiral vane sets to rotate, and then push the spiral-gear generator to generate electricity.

Abstract: A measuring device for testing wave dissipation characteristics of a comb-typed permeable breakwater with arc-shaped walls in a flume is provided. The measuring device comprises three parts: a comb-typed permeable breakwater with arc-shaped walls, wave height measuring instrument fixing and adjusting devices, and a wave height measuring instrument data collecting and processing equipment. The comb-typed permeable breakwater with arc-shaped walls is formed by fixedly connecting upright arc-shaped caissons, a back plate, partition plates, L-shaped connecting plates and a bottom plate. The wave height measuring instrument fixing and adjusting devices are configured for accurately fixing the wave height measuring instrument and adjusting its horizontal position and vertical height. The wave height measuring instrument data collecting and processing equipment is configured for processing, outputting and displaying the data collected by the wave height measuring instrument.

Abstract: A multifunctional floating breakwater includes: a plank platform, a first buoy, a second buoy, a first wave baffle, a second wave baffle, a first arc breast wall, a second arc breast wall, upper inclined supports, lower inclined supports and a net cage. The multifunctional floating breakwater integrates a floating breakwater and a wave-energy power generation device, which can not only maintain good stability of the water surface in a harbor, but also generate electric energy, and allow for aquaculture and other activities as well, and has advantages of being movable and not limited by water depth and geology. In addition, the invention has a simple structure, easy production and maintenance, no pollution to the marine environment and therefore wide application prospects.

Abstract: A barrage with a function of collecting floating garbage on a water surface is provided. It includes a first dam body as a main body of the barrage provided with multiple built-in low water level drainage channels and high water level drainage channels, a second dam body provided with multiple notches for converging floating garbage on the water surface, a garbage collecting and storing equipment arranged between the first dam body and the second dam body and a solar power generating equipment. The garbage collecting and storing equipment maintains running of the garbage conveyor belt by utilizing electric energy provided by the solar power generating equipment, thereby collecting garbage in a garbage pool beside the barrage. It not only has conventional functions of the barrage, but also greatly saves cost of manually salvaging garbage and avoids water pollution caused by accumulation of garbage on the river surface.

Abstract: A measuring device for wave energy conversion performance of a comb-typed permeable breakwater with arcuate walls is provided. The measuring device includes four parts: the comb-type permeable breakwater with arcuate walls, a wave height measuring instrument and pressure sensor fixing and adjusting apparatus, a wave height measuring instrument data collecting and processing apparatus and a pressure sensor data collecting and processing apparatus. The comb-typed permeable breakwater includes combined arc-shaped caissons, partition plates, a back plate, a fixing bottom plate and fixing screws. The wave height measuring instrument data collecting and processing apparatus processes data collected by a wave height measuring instrument and outputs for display. The pressure sensor data collecting and processing apparatus analyzes data collected by a pressure sensor and outputs for display. The measuring device has a stable structure, convenient operation and high experimental accuracy.

Abstract: A fixed permeable breakwater which also serves as a wave power generating device is provided and includes a structure, a structure fixing device and a wave-activated generator set, the structure is connected with seabed through the structure fixing device, holes are arranged on an outer side of upper arc vertical walls of the structure, and spiral vane sets are placed in the holes; a spiral-gear generator is installed on the horizontal bearing plate, and waves push the spiral vane sets to rotate, and then push the spiral-gear generator to generate electricity. The breakwater can be applied to sea areas with deep water, large waves and complex terrain, while reducing the influence of waves and providing a stable water environment for the surrounding sea areas, it has good wave-absorbing performance, convert wave energy into electric energy, and effectively solve the power supply problem of port areas or island residents.

Abstract: A barrage with a function of collecting floating garbage on a water surface is provided. It includes a first dam body as a main body of the barrage provided with multiple built-in low water level drainage channels and high water level drainage channels, a second dam body provided with multiple notches for converging floating garbage on the water surface, a garbage collecting and storing equipment arranged between the first dam body and the second dam body and a solar power generating equipment. The garbage collecting and storing equipment maintains running of the garbage conveyor belt by utilizing electric energy provided by the solar power generating equipment, thereby collecting garbage in a garbage pool beside the barrage. It not only has conventional functions of the barrage, but also greatly saves cost of manually salvaging garbage and avoids water pollution caused by accumulation of garbage on the river surface.

Abstract: A multifunctional floating breakwater includes: a plank platform, a first buoy, a second buoy, a first wave baffle, a second wave baffle, a first arc breast wall, a second arc breast wall, upper inclined supports, lower inclined supports and a net cage. The multifunctional floating breakwater integrates a floating breakwater and a wave-energy power generation device, which can not only maintain good stability of the water surface in a harbor, but also generate electric energy, and allow for aquaculture and other activities as well, and has advantages of being movable and not limited by water depth and geology. In addition, the invention has a simple structure, easy production and maintenance, no pollution to the marine environment and therefore wide application prospects.

Abstract: A measuring device for wave energy conversion performance of a comb-typed permeable breakwater with arcuate walls is provided. The measuring device includes four parts: the comb-type permeable breakwater with arcuate walls, a wave height measuring instrument and pressure sensor fixing and adjusting apparatus, a wave height measuring instrument data collecting and processing apparatus and a pressure sensor data collecting and processing apparatus. The comb-typed permeable breakwater includes combined arc-shaped caissons, partition plates, a back plate, a fixing bottom plate and fixing screws. The wave height measuring instrument data collecting and processing apparatus processes data collected by a wave height measuring instrument and outputs for display. The pressure sensor data collecting and processing apparatus analyzes data collected by a pressure sensor and outputs for display. The measuring device has a stable structure, convenient operation and high experimental accuracy.

Abstract: A measuring device for testing wave dissipation characteristics of a comb-typed permeable breakwater with arc-shaped walls in a flume is provided. The measuring device comprises three parts: a comb-typed permeable breakwater with arc-shaped walls, wave height measuring instrument fixing and adjusting devices, and a wave height measuring instrument data collecting and processing equipment. The comb-typed permeable breakwater with arc-shaped walls is formed by fixedly connecting upright arc-shaped caissons, a back plate, partition plates, L-shaped connecting plates and a bottom plate. The wave height measuring instrument fixing and adjusting devices are configured for accurately fixing the wave height measuring instrument and adjusting its horizontal position and vertical height. The wave height measuring instrument data collecting and processing equipment is configured for processing, outputting and displaying the data collected by the wave height measuring instrument.

Abstract: A system for determining an accurate ohmic resistance value associated with a battery cell is provided. The system includes a microprocessor and a memory device. The memory device has a 3-D interpolation table with first, second, third, fourth, fifth, sixth, seventh, and eighth records, each having a respective SOC value, a respective temperature value, a respective current value, and a respective ohmic resistance value. The microprocessor performs a 3-D interpolation calculation based on a first SOC value, a first temperature value, and a first current value and each respective SOC value, each respective temperature value, and each respective current value in the records to determine the accurate ohmic resistance value associated with the battery cell.

Abstract: A method of rapidly charging a battery includes: (a) applying a charge to the battery using a charging profile; (b) monitoring a terminal voltage of the battery; (c) using a mathematical model to estimate a desired temporal state of charge of the battery and to estimate a predicted terminal voltage; (d) using the monitored terminal voltage of the battery and the predicted terminal voltage to determine an error; (e) applying the error to calculate a calculated state of charge of the battery; and (f) controlling the charge applied by the charging profile to urge the calculated state of charge of the battery toward the desired temporal state of charge of the battery. For use with lithium ion batteries, such feedback is used to limit ion concentration levels. Preferably, a Reduced Order Model is used to minimize computational requirements and facilitate real-time calculations.