CN113945999A - Analog detection device and metering method for optical rainfall sensor - Google Patents
Analog detection device and metering method for optical rainfall sensor Download PDFInfo
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- G—PHYSICS
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- G01W—METEOROLOGY
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Abstract
The invention discloses an optical rainfall sensor simulation detection device and a metering method, which relate to the technical field of metering detection of meteorological detection equipment, and mainly structurally comprise a rainfall simulator, a rainfall collecting and storing mechanism, a support and a rainfall state monitor; the rainfall collecting and storing mechanism, the support and the rainfall state monitor are all arranged below the rainfall simulator, and the support is provided with an optical rainfall sensor. Aiming at the metering requirement of the optical rainfall sensor, an optical rainfall sensor simulation detection device is established, and a rainfall amount metering method of the optical rainfall sensor is designed, so that the problem of magnitude transmission of the optical rainfall sensor is solved, and the method has important application value and great economic benefit. This application also has better popularization application prospect, and when raindrop falling speed reached certain speed, optics rainfall sensor simulation detection device also can be used to piezoelectric type rainfall sensor's detection. Meanwhile, the simultaneous detection of a plurality of tipping bucket type rainfall sensors is supported.
Description
Technical Field
The invention relates to the technical field of metering and detecting of meteorological detection equipment, in particular to an optical rainfall sensor analog detection device and a metering method.
Background
As early as the fifties of the last century, research on optical rainfall monitoring technology began abroad. In 12 months 1994, the first optical rain gauge in China was successfully developed. At present, the optical rainfall sensor realizes continuous non-contact automatic rainfall measurement. The optical rainfall sensor has the advantages of small volume, high sensitivity, intelligence, easiness in maintenance and the like, and is gradually widely applied to the fields of intelligent irrigation, ship navigation, flowing weather stations, automatic doors and windows, geological disasters and the like.
The development of the optical rainfall sensing technology is relatively mature, but the metering means matched with the optical rainfall sensing technology is still in a missing state, a corresponding metering detection device and a corresponding metering method are not established in China, and the problem of tracing the rainfall value of the optical rainfall sensor becomes a difficult problem. At present, a rain gauge (meter) calibrating device is generally established by provincial meteorological measurement departments and is used for carrying out metrological calibration of a tipping bucket type rain sensor. The main standard device is a standard glass measuring device, the rainfall calibrator controls water in the standard glass measuring device to be discharged at a set time, the water outlet mode is point mode, and the tipping bucket type rainfall sensor mainly aims at the area of the water receiving port to be fixed. The sensor part of the optical rainfall sensor is a surface source, and the existing rain gauge (meter) calibrating device is not suitable for the metering work of the optical rainfall sensor.
Disclosure of Invention
Aiming at the measurement requirements of the optical rainfall sensor, the optical rainfall sensor simulation detection device is established, the rainfall measurement method of the optical rainfall sensor is designed, the problem of magnitude transmission of the optical rainfall sensor is solved, and the optical rainfall sensor simulation detection device and the optical rainfall sensor simulation detection method have important application value and great economic benefit. This application also has better popularization application prospect, and when raindrop falling speed reached certain speed, optics rainfall sensor simulation detection device also can be used to piezoelectric type rainfall sensor's detection. Meanwhile, the simultaneous detection of a plurality of tipping bucket type rainfall sensors is supported.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides an optical rainfall sensor simulation detection device, which comprises a rainfall simulator, a rainfall collecting and storing mechanism, a bracket and a rainfall state monitor, wherein the rainfall collecting and storing mechanism is arranged on the bracket; the rainfall collecting and storing mechanism, the support and the rainfall state monitor are all arranged below the rainfall simulator, and the support is provided with an optical rainfall sensor.
Optionally, a temperature sensor is further arranged below the rainfall simulator.
Optionally, the rainfall collecting and storing mechanism comprises a water bearing device, a funnel and a water storage bottle; the funnel with the water storage bottle all set up in hold in the hydrophone, just the bottom of funnel stretches into in the water storage bottle.
Optionally, the inner diameter of the water bearing port of the water bearing device is 20cm, and the manufacturing error of the inner diameter is 0-0.6 mm.
Optionally, the rainfall measuring device further comprises a rainfall measuring cylinder, and the rainfall measuring cylinder is used for measuring rainfall.
Optionally, the effective rainfall area of the rainfall simulator is not less than 2m2(ii) a The raindrop size can be adjusted, and the rainfall intensity simulation range is 10-80 mm/h.
The invention also discloses an analog metering method of the optical rainfall sensor, which comprises the following steps,
(1) installing the optical rainfall sensor to be measured on a fixed support, and adjusting the height of the fixed support to ensure that the height of the sensing surface of the optical rainfall sensor to be measured is consistent with the height of a water bearing port of a water bearing device; putting the rainfall collecting and storing mechanism;
(2) starting a rainfall simulator, and simulating rainfall according to the set rainfall intensity; stopping the rainfall simulator after the rainfall is finished;
(3) taking out the rainfall collecting and storing mechanism, pouring water in the rainfall collecting and storing mechanism into a rainfall measuring cylinder, and reading the total rainfall of the simulation as a rainfall standard value;
(4) calculating the absolute error between the rainfall result measured by the optical rainfall sensor and the rainfall standard value according to the following formula;
in the formula: delta is the relative error; v is the rainfall indication value of the optical rainfall sensor to be measured, and the unit is mm; v0The standard rainfall value measured by the rainfall measuring cylinder is in mm.
Compared with the prior art, the invention has the following technical effects:
the optical rainfall sensor simulation detection device can simulate rainfall in real time without being limited by time and weather conditions, and improves the detection efficiency and the detection precision. The problem that an optical rainfall sensor has no rainfall detection device is solved, and the device is a first metering detection device for the optical rainfall sensor in the domestic meteorological department. Meanwhile, a metering method for measuring precision of the optical rainfall sensor is provided, the problem of tracing of rainfall measurement errors of the optical rainfall sensor is solved, a 10mm rainfall measuring cylinder is used as a metering standard device, the measurement result of the optical rainfall sensor is compared with the measurement result of the metering standard device, and the measurement errors are detected. The detection device and the metering method realize laboratory detection of the optical rainfall sensor, and can also be used as a supplement of the existing rainfall detection device, so that the detection work of the piezoelectric rainfall sensor and the tipping bucket type rainfall sensor is expanded.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an analog detection device of an optical rainfall sensor according to the present invention;
fig. 2 is a diagram of a rainfall amount tracing scheme of the optical rainfall sensor of the invention.
Description of reference numerals: 1. a rainfall simulator; 2. a water bearing device; 3. a funnel; 4. a water storage bottle; 5. a rainfall measuring cylinder; 6. fixing a bracket; 7. a rainfall condition monitor; 8. a temperature sensor; 9. an optical rain sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, the present embodiment provides an optical rainfall sensor simulation detecting device, including a rainfall simulator, a rainfall collecting and storing mechanism, a bracket and a rainfall state monitor; the rainfall collecting and storing mechanism, the support and the rainfall state monitor are all arranged below the rainfall simulator, and the support is provided with an optical rainfall sensor.
In this embodiment, the rainfall simulator 1 is a rainfall simulation generation device of the optical rainfall sensor simulation detection device, and the effective rainfall area is not less than 2m2The raindrop size can be adjusted, and the rainfall intensity simulation range is 10-80 mm/h.
The rainfall collecting and storing mechanism comprises a water bearing device 2, a funnel 3 and a water storage bottle 4, the inner diameter of a water bearing port of the water bearing device is 20cm, the manufacturing error of the inner diameter is less than or equal to 0.6mm, and no negative error is allowed.
And the rainfall measuring cylinder 5 is a rainfall measuring standard device and is used for measuring the rainfall collected in the water storage bottle 4. Is made of colorless transparent glass and is well annealed. The measuring range of the rainfall measuring cylinder is 0.05-10 mm, the scale range is 0.05-10.5 mm, the division value is 0.1mm, and the maximum allowable error is as follows: plus or minus 0.03mm (the value range is less than or equal to 2mm) and plus or minus 0.05mm (the value range is more than 2 mm).
And the fixed support 6 is used for fixing the optical rainfall sensor to be detected, and the height of the mounting support can be adjusted.
A rainfall state monitor 7 for measuring the rainfall intensity and the rainfall of the rainfall simulator 1 in real time; the data output communication interface is provided, and data can be output rapidly.
And the temperature sensor 8 is a device for monitoring the internal temperature of the rainfall simulator 1.
The optical rainfall sensor 9 is a detected object.
The measuring method of the rainfall measurement error of the optical rainfall sensor comprises the steps of installing the optical rainfall sensor 9 on the fixed support 6, and adjusting the height of the fixed support 6 to enable the optical rainfall sensor 9 to be consistent with the height of the water bearing port 2 of the water bearing device 2. Accumulated water in the water storage bottle 4 is emptied, and all parts of the rain gauge are ensured to be installed correctly. The rainfall simulator 1 is started, the rainfall amount and the rainfall intensity are set, the rainfall simulator 1 is started, and detection is started. The rainfall is fixed, and the simulated rainfall intensity can be calculated under the condition that the rainfall time and the effective rainfall area are known. After the detection is finished, the water storage bottle 4 is taken out, and the total rainfall is measured by the rainfall measuring cylinder 5 and taken as a rainfall standard value. The measurement result of the optical rainfall sensor 9 is compared with the standard rainfall value, and the rainfall measurement error thereof is calculated.
The specific metering method comprises the following steps:
(1) the optical rainfall sensor 9 to be measured is installed in the rainfall simulator 1 and is installed on the fixed support 6, and the height of the fixed support 6 is adjusted, so that the height of the sensing surface of the optical rainfall sensor 9 to be measured is basically consistent with the height of the water bearing port of the water bearing device 2. The water container 2, the funnel 3 and the water storage bottle 4 are arranged according to the figure 1.
(2) The rainfall simulator 1 is started to simulate rainfall according to a certain rainfall intensity. After the rainfall is finished, the rainfall simulator 1 is stopped.
(3) The water storage bottle 4 is taken out, the water in the water storage bottle 4 is poured into the rainfall measuring cylinder 5, and the total rainfall of the simulation is read and used as a rainfall standard value.
(4) The absolute error between the rainfall result measured by the optical rainfall sensor 9 and the rainfall standard value is calculated according to the following formula.
In the formula: delta is the relative error; v is the rainfall indication value of the optical rainfall sensor to be measured, and the unit is mm; v0The standard rainfall value measured by the rainfall measuring cylinder is in mm.
In the following, a rainfall amount tracing scheme diagram of an optical rainfall sensor will be clearly and completely described with reference to the attached drawings in the embodiments of the present application.
A diagram of a rainfall value tracing scheme of an optical rainfall sensor is shown in fig. 2. If the optical rainfall sensor 9 used by the customer has a measurement error of ± 5%. When the rainfall is 10mm, the absolute error of measurement is +/-0.5 mm. Usually, the technical index of the measurement standard device is selected within the maximum allowable value (1/3-1/10) of the measured instrument. The metering standard device in the analog detection device of the optical rainfall sensor is a rainfall measuring cylinder 5, and the maximum allowable error of the metering standard device is as follows: the rainfall measuring cylinder 5 can be sent to provincial metrological scientific research institute for verification, a measuring standard device of the rainfall measuring cylinder is a standard glass measuring cylinder, and the verification basis is JJJG 524-1988 rain gauge and rain gauge, so that a traceability chain of rainfall-volume-quality (SI basic unit) is established.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (7)
1. An optical rainfall sensor simulation detection device is characterized by comprising a rainfall simulator, a rainfall collecting and storing mechanism, a bracket and a rainfall state monitor; the rainfall collecting and storing mechanism, the support and the rainfall state monitor are all arranged below the rainfall simulator, and the support is provided with an optical rainfall sensor.
2. The analog detection device of the optical rainfall sensor of claim 1 wherein a temperature sensor is further disposed below the rainfall simulator.
3. The analog optical rainfall sensor detection device of claim 1 wherein the rainfall collection and storage mechanism comprises a water holder, a funnel, and a water storage bottle; the funnel with the water storage bottle all set up in hold in the hydrophone, just the bottom of funnel stretches into in the water storage bottle.
4. The analog detection device of the optical rainfall sensor of claim 3 wherein the inner diameter of the water receiving port of the water receiver is 20cm, and the manufacturing error of the inner diameter is 0-0.6 mm.
5. The analog optical rain sensor detecting device according to claim 3, further comprising a rain measuring cylinder for measuring a rainfall.
6. The analog detecting device of claim 5, wherein the rainfall simulator has an effective rainfall area not less than 2m2(ii) a RaindropThe size can be adjusted, and the rainfall intensity simulation range is 10-80 mm/h.
7. An optical rainfall sensor analog measurement method is characterized by comprising the following steps,
(1) installing the optical rainfall sensor to be measured on a fixed support, and adjusting the height of the fixed support to ensure that the height of the sensing surface of the optical rainfall sensor to be measured is consistent with the height of a water bearing port of a water bearing device; putting the rainfall collecting and storing mechanism;
(2) starting a rainfall simulator, and simulating rainfall according to the set rainfall intensity; stopping the rainfall simulator after the rainfall is finished;
(3) taking out the rainfall collecting and storing mechanism, pouring water in the rainfall collecting and storing mechanism into a rainfall measuring cylinder, and reading the total rainfall of the simulation as a rainfall standard value;
(4) calculating the absolute error between the rainfall result measured by the optical rainfall sensor and the rainfall standard value according to the following formula;
in the formula: delta is the relative error; v is the rainfall indication value of the optical rainfall sensor to be measured, and the unit is mm;
V0the standard rainfall value measured by the rainfall measuring cylinder is in mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117908169A (en) * | 2024-02-02 | 2024-04-19 | 浙江贝良风能电子科技有限公司 | Verification system and method for piezoelectric rainfall detection device |
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| CN112415636A (en) * | 2020-11-02 | 2021-02-26 | 航天新气象科技有限公司 | Calibrating device of rainfall sensor |
| CN112596130A (en) * | 2020-12-03 | 2021-04-02 | 锐捷网络股份有限公司 | Method, device, system, equipment and storage medium for testing rain gauge |
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2021
- 2021-10-26 CN CN202111248662.7A patent/CN113945999A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005026366A1 (en) * | 2004-06-22 | 2006-03-16 | Robert Bosch Gmbh | Rain sensor testing device, especially for a vehicle, has a container in which the sensor to be tested is mounted on a support device above which a mobile test apparatus, which contains a reflective area, is moved |
| CN203370670U (en) * | 2013-07-05 | 2014-01-01 | 中国商用飞机有限责任公司 | Rainfall simulation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117908169A (en) * | 2024-02-02 | 2024-04-19 | 浙江贝良风能电子科技有限公司 | Verification system and method for piezoelectric rainfall detection device |
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