34 results about "Precipitation measurement" patented technology

A thermal plate precipitation measurement system (300) and a method of operating the thermal plate precipitation measurement system (300) is provided. The thermal plate precipitation measurement system (300) includes a first thermal plate system (301A) with first and second thermal plates (302A, 303A) and a second thermal plate system (301B) with first and second thermal plates (302B, 303B). A precipitation rate can be determined by configuring the first and second thermal plates (302A, 303A) of the first thermal plate system (301A) at a first temperature and configuring the first and second thermal plates (302B, 303B) of the second thermal plate system (301B) at a second temperature different than the first temperature. A differential power consumption between the first and second thermal plates (302A, 303A, 302B, 303B) of each of the first and second thermal plate systems (301A, 301B) can be determined and the precipitation rate can be determined based on a difference between the differential power consumption of the first thermal plate system (301A) and the differential power consumption of the second thermal plate system (301B).

Disclosed is a tipping bucket type rainfall precipitation measuring instrument used in a snow season. The tipping bucket type rainfall precipitation measuring instrument used in the snow season is mainly characterized in that a heater is arranged on a shell of a tipping bucket type rainfall precipitation metering cylinder, the heater is electrically connected with a temperature controller which is electrically connected with an electric controller, and a snow touch probe which is electrically connected with the electric controller, and a temperature measuring probe which is electrically connected with the temperature controller are fixedly connected to the shell of the tipping bucket type rainfall precipitation metering cylinder through the heater. The tipping bucket type rainfall precipitation measuring instrument used in the snow season has the advantages of being low in cost and accurate in measurement, and easy to install and convenient to use, and being capable of being used in snowfall regions. When the tipping bucket type rainfall precipitation measuring instrument used in the snow season is used in places in the snow season, the rainfall precipitation can be effectively and normally measured after snow falls and the soil gets frozen, the value of the rainfall precipitation can be directly read, measurement is accurate, and use is convenient; the labor intensity of staff who measure the rainfall precipitation and work in weather units and hydrology units in measured areas can be reduced, and manpower and financial resources are saved.

The invention relates to an automatic precipitation measurement device and a measurement method. The automatic precipitation measurement device comprises an L-shaped precipitation determination sensor formed by an L-shaped insulation board and a plurality of determination contacts Ai arranged on the L-shaped insulation board and a monitoring unit, wherein one ends of the determination contacts Ai are communicated with a power source anode V+ through resistors R, the other ends of the determination contacts Ai are connected with nodes Ji to be determined on the monitoring unit, the monitoring unit is connected with a power source cathode or a determination end point C through controlling the nodes Ji to be determined, whether equipment is at fault is determined according to voltage magnitude of the determination end point C, whether rainfall occurs is detected, and precipitation data is detected. According to the automatic precipitation measurement device and the measurement method, whether the rainfall occurs can be detected timely, a precipitation detection mode is simple, once the equipment is at fault, alarm information can be emitted instantly, so problems that whether the rainfall occurs can not be detected and the precipitation detection mode is complex existing in the prior art are effectively settled.

The present invention proposes a weighing type rain gauge structure suitable for freezing rain precipitation measurement, including a casing, an inner cylinder arranged in the casing, an inner cylinder support, a freezing rain collection plate, a precipitation collection bucket, and a load cell for the precipitation collection bucket and the total load cell, the shell and the inner cylinder are movably connected at the top to form a water receiving port, the precipitation collection bucket is arranged on the load cell of the precipitation collection bucket, and the outlet of the inner cylinder is located directly above the precipitation collection bucket, The weighing sensor of the precipitation collecting bucket is arranged on the said overall weighing sensor, and the said inner cylinder is also arranged on the said overall weighing sensor through said inner cylinder support; The inner cylinder is located directly below the water receiving port, and the diameter of the freezing rain collection plate is larger than that of the water receiving port. The invention can significantly improve the accuracy of freezing rain precipitation measurement, and provide reliable scientific data for scientific research on freezing rain disasters.

The invention provides a portable high-sensitivity short-term weak precipitation metering device. The device includes a rainwater collector with a portable foldable configuration design, a rainwater collecting bottle and a water collecting outlet component. The folding structure is similar to an inversely umbrella-shaped structure, the water collecting outlet component is connected with the rainwater collecting bottle, and rainwater is led from the rainwater collector into the rainwater collector. The device is portable, can be used for high sensitivity measurement of short-term weak precipitation, can improve the sensitivity and accuracy of precipitation measurement, and is especially suitable for ground distributed type accurate monitoring of short-term weak precipitation in artificial precipitation operation in a Tianhe project.

The invention discloses a rain, snow and sandstorm measuring device, comprising a chassis (14) and a protective shell (2) for covering the chassis (14); the top of the protective shell (2) is provided with an adapter (1 ), the outlet of the adapter (1) is facing the inlet of the storage barrel (3), the bottom of the storage barrel (3) is provided with a filter (4) for passing rainwater, and the filter (4) A tipping bucket (5) is arranged at the water outlet, and a magnetic steel (7) is arranged on the tipping bucket (5), and a reed switch (6) is arranged on a bracket close to the magnetic steel (7), and the tipping bucket (5) ) is facing the water inlet of the water storage bucket (8), and the storage bucket (3) and the water storage bucket (8) are integrally connected and located on the load cell (10). The invention can distinguish liquid precipitation and solid precipitation, judge the weight gain caused by sandstorm, and the liquid precipitation in the water storage tank is not affected by evaporation, and the precipitation measurement accuracy can be improved.

An embodiment of the invention provides an X-band dual-polarization weather radar quantitative precipitation measurement method and an X-band dual-polarization weather radar quantitative precipitationmeasurement system. The X-band dual-polarization weather radar quantitative precipitation measurement method comprises the steps of: utilizing an X-band dual-polarization radar to obtain radar data in a detection range, and using a laser raindrop spectrograph to obtain an actually measured raindrop spectrum of a detection point; acquiring a radar reflectivity factor and an attenuation rate; acquiring an actually measured rainfall rate and a radar reflectivity factor true value of the detection point based on the actually measured raindrop spectrum, acquiring an attenuation rate true value ofthe detection point through T matrix scattering simulation, acquiring a rainfall function in the detection range through fitting the actually measured rainfall rate and the attenuation rate true value, and further acquiring a rainfall rate; inverting the rainfall rate by using the attenuation rate if the radar reflectivity factor is greater than a first set threshold value; and acquiring an attenuation rate function in the detection range through fitting the radar reflectivity factor true value and the attenuation rate true value is the radar reflectivity factor is not greater than the first set threshold value, and then acquiring a rainfall rate in the detection range based on the attenuation rate function. The X-band dual-polarization weather radar quantitative precipitation measurementmethod and the X-band dual-polarization weather radar quantitative precipitation measurement system can acquire more precise predicted rainfall rates.

The invention discloses a method for assimilating satellite and surface precipitation measurement values ​​based on Kalman filtering, which includes the following steps: preprocessing: obtaining mutually independent satellite measurement data and ground rainfall station data, and simultaneously comparing and analyzing the measurement values ​​to obtain measurement deviations ; Time update: both the measured value estimate and the noise error estimate are expressed as an autocorrelation function; method update: the estimated value of the measurement deviation and the estimated value of the noise error variance are assimilated by the Kalman filter method; the present invention not only corrects The error of the system can be eliminated effectively, and the influence of noise can be effectively eliminated, which further improves the reliability of the estimated rainfall.

The invention discloses a multi-band microwave link-combined regional precipitation measurement method. The method includes the following steps that: data acquisition devices are installed on each microwave link transmitting and receiving base station, and the signal level values RSL of the microwave transmitting and receiving ends are collected and transmitted to a central server in real time, and the path attenuation value of each microwave link is obtained through calculation according to point-to-point microwave links; the central server stores the signal level values RSL sent by each base station in the form of FTP files, carries out matching according to the point-to-point microwave links, and establishes a topological structure of multi-band microwave links based on the geographical positions of the microwave link transmitting and receiving base stations; and two-dimensional grids are established according to the topological structure, and links in each grid are marked. The method has the advantages of wide coverage, low hardware costs and the like. With the method adopted, deficiencies of an existing meteorological observation station network in observation resolution and coverage can be made up.

The present invention belongs to the technical field of precipitation measuring and calculating equipment, in particular to a precipitation measuring and calculating device for permafrost region observation, comprising a base, an outer cylinder is arranged above the base, and support columns are fixed at the four corners of the bottom of the outer cylinder, The bottoms of the support columns are all fixedly connected to the top of the base, and the top of the base is symmetrically fixed with support plates. The present invention can disassemble and assemble the measuring cylinder more conveniently by setting the support plate, two-way screw rod, knob, vertical plate, cross bar, splint and non-slip rubber pad. After the rainwater is collected, the measuring cylinder can be taken out more conveniently, so It is convenient for people to observe the amount of precipitation. By setting support plates, inserting blocks, right-angled triangle blocks, fixed blocks, guide rods, slide plates, first springs, trapezoidal blocks, connecting rods, rings and pressure plates, the rain funnel can be more conveniently carried out. Disassembly and assembly, so that when it needs to be carried, the rain funnel can be disassembled from the outer cylinder, so that the height can be reduced, so that people can carry it conveniently.

It is a shipment rain measurement device, which comprises measuring cylinder, rain holder and water storage container connected with the holder and special top plat. The top plat has a top balance ring fixed on the holder of the plat through a pair of top balance couple devices. The rain device is fixed in the balance ring through a pair of top balance devices with relative gravity to make the rain device in the center of the top balance ring with both tundishes into one body with air pipe.