651 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.

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.

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 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.

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.

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 present invention provides an object-sensing device capable of estimating the presence of an object attached on a sensing surface, the kind of the object and the state of the object. An image is formed by a lens with light via the sensing surface, and the light is received by a light-receiving element portion in which a plurality of micro-light-receiving elements are arranged. In the object detection mode, totally reflected light from the sensing surface is received by the light-receiving element portion. The components are arranged at an angle that allows total reflection when there is no object, and does not allow the total reflection condition to be satisfied when there is an object. In the light scattering object detection mode, scattered light from the sensing surface is received by the light-receiving element portion. A signal pattern is obtained by joining detection signal levels of the micro-light-receiving elements in accordance with the arrangement of the micro-light-receiving elements. An increase portion or a drop portion of the signal pattern that appears in accordance with the presence of the object or a difference in the state thereof is analyzed, so that the kind and the state of the object such as a rain drop, muddy water, fogging, ice or the like are estimated.

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.

A one-body type rain sensor is attached to a vehicle glass to differentiate a raindrop and an external object which fall down onto the vehicle glass, where the one-body type rain sensor includes a light emission unit which emits light which is inputted onto the vehicle glass, a second light emission module which emits light which is inputted onto the vehicle glass, a light receiving unit which receives the light which is emitted from the light emission unit and the second light emission unit and reflected off the vehicle glass, and a control unit which outputs the light that the light receiving unit has received, in the form of a signal, thereby operating a wiper of the vehicle.

The invention discloses a raindrop removing method for a single image based on a dense multi-scale generative adversarial network. Constructing a multi-scale image restoration model by using a dense network for feature reuse; constructing a discriminant network model with an attention mechanism by combining and utilizing the multi-scale image restoration model; forming a multi-scale generative adversarial network model; obtaining an original rain image, an original rain-free image and a residual raindrop layer; inputting the original rain-free image and the residual raindrop layer into the discrimination network model; utilizing an error between the discriminant network model and the generative network model; and performing back propagation to alternately train the multi-scale generative adversarial network model, stopping training until errors of the discrimination network model and the generative network model converge to a set range, generating a raindrop removal model by using thetrained generative network model, and removing relatively large and dense raindrops in a single image.