41results about "Humidity indication" patented technology

An image processing system which detects foreign matter on window of a vehicle with high reliability. The system includes an image processor, a first lamp, and a second lamp and when to turn on the first and second lamps is controlled by the image processor. Light from the first lamp passes through the glass. If there are raindrops on the outer surface of the glass, light is reflected by raindrops and light from the second lamp is reflected by a surface of the glass and such reflected light goes through a lens and an optical filter with prescribed optical characteristics to an imaging device.

An environment sensor (11) for measuring the temperature and humidity can be miniaturized and can respond at high speed. The environment sensor (11) includes a temperature sensing portion (111) having a temperature-sensitive material (1) made of a metal oxide, and a humidity-sensing portion (112) which is formed on the same substrate as the temperature sensing portion (111) and measures the ambient humidity by using a change in electrical characteristics. At least one of a pair of electrodes (2, 3) of the temperature sensor (111) is integrated with an electrode of the humidity-sensing portion (112).

An irreversible humidity exposure dose indicator device, including a housing sealed at a first end thereof and adapted at a second end thereof to admit ambient gas ingress into an interior volume containing chromogenic material. The chromogenic material in contact with water irreversibly absorbs such water to produce a change whose extent is correlative of cumulative exposure of the device to humidity. The device may be configured as an indicator card including an intermediate permeable membrane coated on a first side thereof with a layer of a deliquescent solid and being in contact on a second side thereof with a layer containing a reactive indicator, with a water-permeable layer adjacent to the layer containing the deliquescent coating, enclosed within a water-impermeable transparent enclosure. The device can include an opening to the permeable layer that is shielded by a removable member that is removed to initiate the dosimetric process, and permit water vapor to diffuse through the opening and liquefy the deliquescent material, so that the liquid permeates through the membrane and a visible indication of the location of the wet front is seen as the water contacts the chromogenic material. A scale can be printed on the exterior of the enclosure to permit a viewer to see the progress of the indication, e, g. of a color front.

The invention discloses a heating type humidity sensor, including a substrate (1), a humidity sensitive capacitance and a heating circuit. The substrate (1) is a square sheet as a supporting structure at the lowest layer. The heating circuit encircles the humidity sensitive capacitance. Two heating type humidity sensors are used at the same time; one is for heating and dehumidification cooling, and at the same time, the other one is for humidity measurement; and after one working cycle, the two sensors swap working modes. The manufacturing method of the heating type humidity sensor comprises the following steps: selecting the substrate (1); making the heating circuit; making a capacitance lower electrode (7); making a capacitance humidity sensing dielectric layer (12); and making a capacitor upper electrode (13). The heating type humidity sensor provided by the invention in the ambient temperature of 50-90 DEG C has humidity measurement range of 0%-100% RH, humidity measurement error less than +/- 3%, humidity resolution less than 0.1% and response time of less than 1s at room temperature.

For calibrating a humidity sensor, the latter is used to measure the relative humidity (U1, U2) at each of two known gas pressure values (P1, P2), likewise to be measured if necessary. At the same time, other ambient conditions are kept constant. A correction value for correction of the measured values of the humidity sensor to be subtracted from the latter is then obtained from the formula: k=((P1/P2)*U2−U1)/(P1/P2−1). The humidity sensor is thus capable of calibration without measurement of the actual humidity value.

The invention discloses a novel method for obtaining vertical profiles of multiple atmospheric parameters simultaneously. According to the method, measurement devices based on various principles and capable of measuring multiple parameters simultaneously are fixed on a cable of an aerostat at specified intervals, finish measurement of the atmospheric parameters at the height and transmit data to ground acquisition equipment in real time, and real-time measured vertical profiles of the multiple atmospheric parameters are obtained synchronously. The profile data has no prerequisite of assumption, and calibration data can be provided for ground remote sensing equipment such as radar and the like performing measurement at the same site while conventional meteorological parameters and atmospheric pollution data are provided for meteorological department and environmental governance department. Developed equipment is good in timeliness, high in automation degree and measurement precision, stable in work and reliable in performance.

Colorimetric moisture-indicating compositions comprising a modified moisture-indicating composition comprising (a) a moisture-indicating composition comprising (1) a solid support and (2) a bis(glyoxime)-transition metal complex bound to the solid support, and (b) a modifier comprising at least one hygroscopic salt are described. In some embodiments, the at least one hygroscopic salt is in physical contact with or in fluid communication with the moisture-indicating composition and comprises an anion the group comprising halide, nitrate, acetate, carbonate, and hydroxide; and a cation selected from the group comprising ammonium, an alkali metal, an alkaline earth metal, and a transition metal. These colorimetric moisture-indicating compositions can be used to make a colorimetric relative humidity-indicating sensor. A method of adjusting the colorimetric response of a colorimetric moisture-indicating composition and a method of detecting moisture are also provided. Colorimetric moisture indicating cards comprising the colorimetric moisture-indicating compositions are also provided.

The present invention comprises a method of humidity indication comprising providing a substrate and an area of humidity indication comprising copper bromide, bromide salt, a dye, and cellulose fiber. In another embodiment of the invention, the invention comprises a humidity indicator array comprising a substrate having a plurality of areas of humidity indication on the substrate, wherein each area comprises copper bromide, dye, and bromide salt, wherein the mole ratio of bromide ions to copper ions in the area is about 7.5:1.

An assembly and method for using weather sensors with enhanced modular capability is disclosed. The weather sensor assembly generally comprises a cap module, middle module, and a base module, where the cap module, middle module(s) and the base module are stacked adjacently to provide environmental sealing, weather sensing, and electrical connectivity to the weather sensor assembly. One or more ring mechanisms may be included that interlock the cap module, middle module(s), base module to form the weather sensor assembly into an integrated unit. Moreover, the ring mechanisms enable further modules to be added to the weather sensor assembly for additional capabilities. By doing so, each of the modules in the weather sensor assembly may be independent units that can be removed, reordered, swapped, and added for desired sensing modalities and environments.

The present invention discloses air-tightness test equipment for a turbine reduction gearbox, comprising a base, characterized in that a product mounting plate is arranged and fixed on the base by a support frame, the product mounting plate is provided with a product positioning slot having an opening on its one side; a compression cylinder is arranged over the product mounting plate by a cylinder support plate, the compression cylinder is vertically arranged, and a piston rod of the compression cylinder faces downward and a sealed connector corresponding to the upper part of the product positioning slot is fixed at the lower end of the piston rod; the sealed connector has a cavity in which an inflator is arranged, and the inflator is connected with an inflator bump by a pipeline; the inflator pump is provided with a gas filtration device, the pipeline is provided with a gas valve, and a gas pressure sensor is arranged on the pipeline between the gas valve and the inflator; the compression cylinder, the inflator bump, the gas valve and the gas pressure sensor are connected to a controller, respectively.

To provide an antimonic acid film having an excellent conductivity and a high response to humidity, and useful as a high-performance humidity sensor, a hydrogen gas sensor or a hydrogen fuel cell, the present invention provides an antimonic acid film comprising single crystals of cubic antimonic acid dispersed in amorphous antimonic acid by causing metallic antimony or an oxygen-containing compound thereof to react with hydrogen peroxide using the resultant reaction solution as the raw material, and forming a film on an insulated substrate.

The invention relates to a capacitance type moisture condensation sensor which comprises a substrate and a capacitance gate arranged on the substrate. An insulation layer is further arranged on the surface of the capacitance gate, and the capacitance gate comprises two sets of comb type capacitance plates which are distributed in a crossed mode. By means of the capacitance type moisture condensation sensor, and through monitoring of capacitance changes of the capacitance type moisture condensation sensor, automatic monitoring of moisture condensation in meteorological observation can be achieved, corrosion resistance is strong, maintenance is not needed, and manufacturing cost is low.

The invention discloses a barometer handkerchief which comprises a handkerchief and is characterized in that: the handkerchief is immersed in CoCl2 solution for 5min or more, and then the handkerchief is taken out and dried. The barometer handkerchief designed by the invention has the advantages of low price, simple production, compactness and practicality. Furthermore, the handkerchief is generally the carry-on object, thereby having very timely grasp of the weather changes.