660 results about "Rain drop" patented technology

A method for detecting raindrops on a windscreen, which uses a camera, which is fitted inside the vehicle opposite the windscreen and which is focused at infinite. The method comprises steps of acquiring images by a camera through the windscreen, camera preferably focused at infinite, retrieving the contours of the spots present on the acquired images, and realizing the histogram of the widths of contours of the spots.

A rain sensor using light scattering, and more particularly to, a rain sensor for detecting an amount of moisture particles, such as raindrops or fog, accumulated in a front windshield of a vehicle, and applying the amount of moisture particles to an operation of a wiper of the vehicle.

The invention belongs to the technical field of preparing transparent super-hydrophobic coatings, in particular to a method for preparing a transparent, super-hydrophobic and automatic-cleaning coating on an arbitrary-shape substrate made of glass, quartz, and the like. The method for preparing a transparent super-hydrophobic automatic cleaning coating comprises the following steps: substrate processing, solution preparation, micro-nanometer composite structure assemblage, heat processing of the coating, modification of a hydrophobic substance, and the like. The method of the invention is not limited by the size and the shape of the substrate and is suitable for the substrates with flat surfaces, curve surfaces and irregular surfaces. The contact angle of the super-hydrophobic coating is larger than 150 DEG, and the rolling angle of the super-hydrophobic coating is smaller than 5 DEG. When falling on the glass, rain drops can rapidly roll off without being adhered to the glass and can take away the dust falling on the glass to keep the surface to be clean. The prepared coating has high transmission, and the average transmission is higher than 90 percent. The invention has simple technology and method, easy-obtained material and low cost, and is suitable for the occasions of windshields and lenses of automobiles and planes, curtain walls and glass of buildings, and the like.

The invention relates to a device or a method for detecting rain (4), said device or method comprising a camera (1) and a lighting source (3). The camera (1) is disposed behind a pane (2), in particular in the interior of a vehicle behind a windscreen, and focused onto a far range that lies in front of the pane (2). The lighting source (3) for generating at least one light beam (h; n) that is directed at the pane (2) directs the at least one light beam (h; n) towards the pane (2) such that at least one beam (r2; r2′) that is reflected from the outer face (2.2) of the pane impinges on the camera (1).The light quantity of the at least one beam (r2; r2′) that impinges on the camera (1) can be measured by the camera (1).

The invention relates to a climate environment simulation test method which comprises the following operation that: an environment simulation cabin is arranged; a sample fed with ultrahigh-voltage power is arranged in the environment simulation cabin; a thermal fog system, a rain spray system, an ice covering system, a wind creating system and an ice melting system are arranged around the sample, and a temperature control system, a pressure regulation system, a test control system and a water source are arranged outside the environment simulation cabin; when the thermal fog environment is simulated, the thermal fog system is controlled to input the rate of steam into the environment simulation cabin; when the rain spraying environment is simulated, the angle that rain drops collide with the surface of the sample is 45 degrees; when the ice covering environment is simulated, the temperature in the environment simulation cabin is controlled, so that water drops are attached on the surface of the sample; when wind environment is simulated, the wind speed of the wind creating system is controlled; and the ice melting environment is simulated, the temperature rise rate near the sample is controlled. The climate environment simulation test method is easy to simulate various climate environments, can be applied in the test research and the product performance test of electric power, traffic, aviation and other fields, and the like.

The invention relates to a raininess estimation method based on dual polarization Doppler weather radar detection. The method comprises the steps that when echo intensity ZH of rainfall is small, the rainfall is estimated through the echo intensity ZH; when the echo intensity ZH of the rainfall is increased, if a value of ratio differential phase shift KDP and a value of a differential reflectivity factor ZDR are small, the rainfall is estimated through the echo intensity ZH and the differential reflectivity factor ZDR, if the value of the ratio differential phase shift KDP is small and the value of the differential reflectivity factor ZDR is large, the rainfall is estimated through the ratio differential phase shift KDP and the differential reflectivity factor ZDR, and if the value of the ratio differential phase shift KDP and the value of the differential reflectivity factor ZDR are large, the rainfall is estimated through the ratio differential phase shift KDP. According to the meteorology feature of precipitation particles, the raindrop spectrum feature of the precipitation particles of different sizes and the influence of rain belt attenuation are considered, a combined rainfall algorithm is adopted, the estimation result is accurate, precision is improved, and flash flood monitoring capacity is improved.

There is provided a rain sensor capable of adequately detecting raindrops in a captured image. The rain sensor includes: a surface light source 14 which emits light to a windshield G to cause light to be incident on a raindrop detection region T set on the windshield G at a critical angle or more; a camera 15 which is arranged on the optical path of light totally reflected by the detection region T and captures the detection region T; and a detection unit which detects raindrops adhering to the detection region T from contrast in the image captured by the camera 15; the detection unit detects the raindrops adhering to the detection region T based on at least one of the captured image in the detection region T to which light is emitted from the surface light source 14 and the captured image in the detection region T to which light is not emitted from the surface light source 14.

The invention discloses a method and device for detecting rain fall through laser. The device comprises a laser light source meeting a certain wavelength and power requirement, a parallel sheet light beam generating system based on a specified generation method, a two-dimensional water particle bidirectional sampling measurement area formed by two parallel sheets perpendicularly intersected in the horizontal direction, a linear array sensor and a rain fall detecting data processing and information feedback system. The device for detecting the rain fall through laser greatly improves the constant and stable property of detecting light and reduces measurement errors caused by light source power fluctuation. A real time humidity / meteorological parameter sensing critical starting method is adopted. Due to the fact that calibration and correction are conducted before detection, the measurement errors caused by drifting of work points of the system can be reduced to the largest extent, and meanwhile energy consumption of a measurement system is reduced. By means of the device for detecting the rain fall through the laser, the rain fall, raininess and a raindrop spectrum can be accurately and continuously observed and measured in real time. The device for detecting the rain fall through the laser can be applied to the related fields for observing, measuring and forecasting the rain fall including weather, hydrology, high way conditions, airport taking-off and landing and the like.

The invention discloses a rainfall field reconstruction method by integrating microwave link, disdrometer, rain gauge and weather radar: selecting microwave link, disdrometer, rain gauge and weather radar to synchronously observe areas covered and make disperse lattices; making space matching and time matching over data of rainfall intensity synchronously observed by disdrometer, rain gauge and weather radar and making interpolation by inverse distance interpolation to draw lattice data; reconstructing rainfall field by lattice data of rainfall intensity synchronously observed by microwave link, disdrometer, rain gauge and weather radar: evaluating autocorrelation coefficient and cross-correlation coeffi-cient of data of rainfall intensity synchronously observed by microwave link, disdrometer, rain gauge and weather radar by recursion of estimated value in time domain to further determine variance of microwave link, disdrometer, rain gauge and weather radar; estimating and determining best weight of four kinds of data of rainfall intensity by minimum variance to realize rainfall field reconstruction.

Systems and methods for reducing the visibility of rain in acquired images are provided. One or more inputs relating the scene desired to be acquired by the user are used to retrieve camera settings that will reduce the visibility of rain in acquired images. Additionally, features relating to the scene may be automatically determined and used alone, or in combination with user inputs, to retrieve camera settings. The acquired images may be part of a video. Another feature of the invention is its use as a rain gauge. The camera settings are adjusted to enhance the visibility of rain, then one ore more images are acquired and analyzed for the amount and size of raindrops. From this analysis the rain rate can be determined.

The invention discloses an automatic windshield wiper control method and aims to establish a rain drops template base. The automatic windshield wiper control method includes 1), digitalizing video images collected from video cameras; 2), detecting rain drops in the digitalized video images; 3), traversing the rain drops in the images according to given algorithm, matching types of rain drops in the rain drop template base, and calculating types of rain drops and corresponding numbers of the rain drops; 4), confirming rainfall according to calculated types of rain drops and the corresponding numbers of the rain drops; 5), confirming or adjusting the rotational speed of the windshield wiper according to the rainfall. The automatic windshield wiper control method is small in occupation source and high in efficiency and has good transportability.

The invention provides a portable printer wherein provisions are made to prevent rain drops or dust particles from entering the interior of a body case through a paper exit port of the printer when a person carrying the portable printer in an exposed manner, for example, on his or her waist, is caught in rain or passes through a dusty area, and provisions are also made to ensure that power to the portable printer is turned off when not in use. More specifically, the invention provides a portable printer comprising: a body case having a paper storage section for storing paper; a storage cover swingably attached to the body case in order to open and close the paper storage section; a paper exit cover for opening and closing a paper exit port formed between the body case and the storage cover; and a control unit for controlling ON / OFF of power to the portable printer in conjunction with the opening and closing of the paper exit cover, wherein the control unit turns off power to the portable printer when the paper exit cover is set to close the paper exit port.

The invention discloses a method for collecting rainwater. The method comprises the following steps that: a rain dropping pipe guides rainwater on a roof to a scattering ditch, the rainwater passes through a collection pipe network and enters a sunken green land, and the rainwater on a hardened land and a road surface is guided to the sunken green land; a seepage layer is arranged below the sunken green land and a green land, and a seepage pipe network is arranged in the middle of the seepage layer and connected with an impounding reservoir; the rainwater flows through the soil layer and the seepage layer and supplements the underground water; when the underground water level ascends due to rainfall, the rainwater flows through the seepage pipe network, enters the impounding reservoir and is used; and the water in the impounding reservoir can be fed into a water pipe network in a city. The invention also discloses a device for collecting the rainwater. The rain dropping pipe is arranged on a house and connected to the scattering ditch; the scattering ditch is connected to the collection pipe network; the collection pipe network is connected to the sunken green land; sewers are arranged on the hardened land, the green land and the road surface and connected with the sunken green land; the seepage layer is arranged below the soil layer below the sunken green land and the green land; and the seepage pipe network is arranged between the seepage layer and connected with the impounding reservoir. The device is rationally designed, and the method is simple; the number of targets is large; the use and maintenance costs are low; and the service life is long.

Electrical connection reliability of a vehicle charge cable socket connector is maintained for a long period. Dust particles and rain drops that inevitably get into a socket contact can be let out through a contact through hole and a housing through hole that extend from inside the socket contact to outside a housing. Such a configuration can avoid adverse effects of dust particles and drain drops on electrical contact and maintain high connection reliability for a long period.

The sensor is a pair of planar electrodes in some interval formed on the inner surface of automobile glass via adhering, pressing, painting or plating conductor, and electrode pair constitutes one planar capacitor via glass and near dielectric space. When some rain drops or other foreign matter attach to the outer surface of the glass, there will be changes in the average dielectric constant, the area covered by the planar capacitor plates and the minor axis radius of the dielectric space and thus change in capacitance, and the intelligent adaptive signal amplifying and processing unit with microprocessor detects the change in capacitance and converts it into digital signal to drive the control unit of the automatic windscreen wiper system.

An embodiment of the invention discloses a GAN (generative adversarial network) based image raindrop removal method. The method is mainly characterized in that one more efficient and more remarkable image rain removal method is provided with a deep rain removal algorithm by constructing the GAN, in actual use, all that is needed is to input an image into the generative network, a result image canbe obtained by one-time forward propagation, and the method has more efficient effect as compared with the traditional image processing method; besides, details of part of rain removal effects can beadjusted by introducing sense correlation of feature space into a model, so that the generated image is clearer and more visual, and better effect can be realized in image enhancement.

The invention relates to a method for measuring a laser rainfall weather phenomenon and a laser rainfall weather phenomenon instrument. A calcite crystal with the birefringent characteristic is arranged at a light source transmitting end, so that two accurate parallel horizontal measurement light strips generated by the light source transmitting end take stopping and attenuating effects on light when falling rainfall particles pass through the measurement light strips; a double peak-shaped measurement signal is generated on a receiving end photoelectric detector; and by measuring a peak-peak interval and an integral value of the double peak signal, the falling speed of the rainfall particles and information of the particle size can be obtained, the judgment on the rainfall weather phenomenon is implemented and data such as a rainfall strength, a rain droplet size spectrum and the like can be provided.

The invention discloses an image rain removal method based on a residual adversarial refinement network, which can effectively remove raindrops in an image and restore a real scene image. According tothe method, rain removal is divided into two stages, in the first stage, a residual image is removed from an original image, a clear image is recovered, the recovered image is input into the second stage, background information of the part shielded by raindrops is recovered, the image is refined, and the quality is improved. According to the method, a rain image is regarded as synthesis of a clear image and a residual image, based on the principle, the residual image is obtained from an original rain image through a residual network, and the residual image is subtracted from the original image to obtain an output image of a first stage; in the second stage, the generative adversarial network is adopted to take the output image and the residual image in the first stage as input, the residual image is taken as an attention mechanism, and the network is assisted to recover a more real image. The invention further provides an image rain removing system.

A deposit detector in which deposit on a detection surface has a surface shape effect, and generation of a flashing phenomenon caused by irregular reflection of the light incident on the deposit from the outside is estimated. In a deposit detection mode, light emitted from a light source (10) for total reflection and total-reflected from the detection surface is received by a light-receiving element unit (50). Each element is disposed at such an angle that the light undergoes total reflection when no deposit is present or the condition of total reflection is not satisfied when deposit is present. Further, in a light-scattering deposit detection mode, light emitted from a scattering light source (20) and scattered by the detection surface is received by the light-receiving element unit (50). In an extraneous light quantity increase detection mode, extraneous light is received by the light-receiving element unit (50). Light detection signal generated while changing the mode is analyzed by a deposit estimation unit (60), and deposition of rain drops and increase in incident extraneous light quantity are detected to estimate generation of irregular reflection (flashing phenomenon) caused by the shape effect of deposit.

A method of using a bipolar radar to estimate a precipitation rate for rain that generates negligible attenuation. The method includes using the bipolar radar to measure the differential phase ΦDP and the apparent reflectivity Ze on at least one of horizontal polarization H and vertical polarization V over a given interval [r0, r1] of path radii relative to the radar. An estimate of the value No* representative of the dimensional distribution of rain drops is made on the basis of the differential phase difference in the range r0 to r1 and on the basis of an integral of a function of the apparent reflectivity Ze along the interval [r0, r1]. A value is deduced for the precipitation rate at a point from N0* and the apparent reflectivity at the point.

The invention relates to a new method and system for detection and removal of rain from video using temporal / spatiotemporal properties. Advantageously, the temporal / spatiotemporal properties are involved to separate the rain pixels from the non-rain pixels. It is thus possible by way of the present invention to involve less number of consecutive frames, reducing the buffer size and delay. It works only on the intensity plane which reduces the complexity and execution time significantly along with accurate rain detection. This new technique does not assume the shape, size and velocity of the raindrops which makes it robust to different rain conditions. This method reduces the buffer size which reduces the system cost, delay and power consumption while maintaining sufficient quality of rain detection.

The invention discloses a waterproof outdoor communication cabinet with an efficient heat dissipation and ventilation effect. The waterproof outdoor communication cabinet comprises a cabinet body, a cabinet top, a waterproof apparatus, a detection apparatus and a control apparatus; ventilation apparatuses are arranged on the two sides of the cabinet body; the waterproof apparatus comprises a driving apparatus, a transmission apparatus, a baffle, sliding grooves and a limiting apparatus; the sliding grooves are formed in the two sides of the ventilation apparatuses; the two sides of the baffle are arranged in the sliding grooves; a chain is arranged above the two ends of the baffle; the baffle is connected with the transmission apparatus through the chain; the limiting apparatus is arranged at the lower ends of the sliding grooves; the limiting apparatus comprises hydraulic pumps and limiting switches; and the detection apparatus comprises a raindrop sensor. By virtue of rain water detection and closing of the ventilating holes in time, rain water can be prevented from entering the interior of the cabinet body; and in addition, the opening range of the ventilating holes can be adjusted according to the temperature and humidity conditions in the cabinet body, so that intelligent control of heat dissipation and ventilation can be realized, damage to the communication cabinet can be avoided, and the service life of the communication cabinet can be prolonged.

A vehicular imaging device includes a camera (18) for obtaining an image rearwardly of a vehicle body that is housed in a mirror housing (14) of a door mirror (13). An objective lens (18b) of the camera (18) is disposed inwardly of an outer surface of the mirror housing (14), so that rain drops or snow that flow from top to bottom on the outer surface of the mirror housing (14) due to gravity, or rain drops or snow that flow from front to rear on the outer surface of the mirror housing (14) as they are pushed by the wind produced by the running vehicle, can be prevented from becoming attached to the objective lens (18b) of the camera (18). Thus, the imaging function of the camera (18) can be maintained.

The embodiment of the invention provides an intelligent protection system for a rain gauge, and belongs to the field of rainfall measuring equipment. The intelligent protection system for a rain gauge detects whether rainfall occurs at present through a raindrop sensing device, thereby transmitting a collected signal of whether rainfall occurs to a controller, the controller controls opening and closing of a rain gauge protection device through the collected signal of whether rainfall occurs, thereby enabling the rain gauge protection device to be opened during rainfall, so that rain water falls in a rain collector, so that a rainfall measurer under the rain collector can work normally, and under the condition of no rainfall, the controller controls the rain gauge protection device to cover the rain collector, thereby effectively preventing dust and impurities in air from falling in the rain collector on days without rain, and preventing the circumstance that blockage of the rain gauge is caused and rainfall cannot be measured normally. Rainfall measurement of the rain gauge is more accurate, and the trouble of frequently cleaning the rain gauge by manpower is avoided.

The invention relates to a raindrop three-dimensional detection device and a method for calculating raindrop volume through the raindrop three-dimensional detection device, and belongs to the technical field of meteorological observation. The raindrop three-dimensional detection device comprises a first laser, a first beam shaping system, a lower-layer detection area, a first linear array photoelectric detector, a second laser, a second beam shaping system, a second linear array photoelectric detector, a third laser, a third beam shaping system, an upper-layer detection area and a third linear array photoelectric detector. The method for calculating the raindrop volume through the raindrop three-dimensional detection device comprises the steps that a raindrop is modeled to be in an ellipsoid shape or a steamed bun shape, and the approximate volume of the raindrop is obtained according to collected data. According to the raindrop three-dimensional detection device, a high-speed linear array scanning method in the three-dimensional direction is adopted, the raindrop dimension sampling accuracy and resolution ratio are improved, the recognition rate of tiny rainfall particles such as drizzles is increased, meanwhile, measurement, conducted by an existing optical rain gauge, of rainfall particle forms such as shapes and falling angles is improved, a more accurate mathematic model is established, and the error is small.

The invention provides a video rain removing method. According to the video rain removing method, illumination variation factors are taken into consideration, firstly, whether environment illumination varies or not is judged, on the basis, rain removing under the illumination variation condition is achieved according to the illumination variation by changing the Kalman gain Kg, whether pixels under illumination are covered by raindrops or not is judged according to the difference of the brightness measurement value of a current frame and the brightness actual value of a previous frame, and therefore the raindrops are removed. According to the video rain removing method, the environment illumination variation factors are taken into consideration in video rain removing, and video rain removing can be effectively performed when illumination variation exists in the environment.

The invention discloses a formula, a preparation method and an application of a dispersible oil suspending agent containing spirotetramat and dinotefuran. The formula comprises 5-50% of spirotetramat, 5-50% of dinotefuran, 5-25% of emulsifying agent, 2-15% of dispersing agent, 1-8% of wetting agent, 1-7% of thickening agent, 1-6% of stabilizing agent and the balance of dispersion medium. The suspending agent has the characteristics of environmental protection, high crop safety, rain drop erosion resistance, long lasting period and the like, and has a good control effect on scale insects, aphis, phylloxera and trialeurodes vaporariorum.