CN102998720A - Method and device for calibrating dynamic response characteristic of sonde humidity by double flow method - Google Patents
Method and device for calibrating dynamic response characteristic of sonde humidity by double flow method Download PDFInfo
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- CN102998720A CN102998720A CN2012105007436A CN201210500743A CN102998720A CN 102998720 A CN102998720 A CN 102998720A CN 2012105007436 A CN2012105007436 A CN 2012105007436A CN 201210500743 A CN201210500743 A CN 201210500743A CN 102998720 A CN102998720 A CN 102998720A
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Abstract
The invention discloses a method and a device for calibrating a dynamic response characteristic of sonde humidity by a double flow method. The method includes that a sonde test chamber with given relative humidity is arranged, a humidity detected value of the sonde is real-timely received and recorded, gases with the given relative humidity are formed by uniformly mixing one way of a known amount of dry nitrogen and another way of a known amount of saturated humidity nitrogen, the nitrogen and the test chamber, both with the given relative humidity, have same environment temperatures which can simulate a lift-off state of the sonde, and the test chamber has a pressure environment which can simulate a high lift-off state of the sonde. The device comprises a control system, a water bath tank, the test chamber, an electrical control adjusting valve, a vacuum pump, a first gas inlet pipeline, a second gas inlet pipeline and the like, and the first gas inlet pipeline and the second gas inlet pipeline are respectively used for providing dry nitrogen and saturated humidity nitrogen which are provided with set amount. The method and the device for calibrating the dynamic response characteristic of the sonde humidity by the double flow method have the advantages that the calibration by the calibration method is accurate, the manufacturing is simple, the calibration efficiency is high, the calibration device is simple in structure, a reliable simulated lift-off environment can be provided for the sonde, and the accurate calibration can be guaranteed.
Description
Technical field
The present invention relates to a kind of demarcation collimation technique of humidity measurement instrument, particularly a kind of double-current method method and device that the humidity dynamic response characteristic of sonde is demarcated.
Background technology
Sonde refers to measure by self-contained inductor or radio telemetry method the general name of the instrument of the various key elements of free atmosphere.Radiosonde carries on meteorological balloon, and it is measured a plurality of atmospheric parameters and passes these data back ground receiving station with radio.The radiosonde in the present age is via the computer communication on radio and ground, these data of passing back of computing machine real-time storage.The significant data of radiosonde measurement comprise atmospheric pressure, highly, longitude and latitude, temperature, relative humidity, wind speed and direction etc.Because sonde moves upward with the speed of balloon with 300～400 m/mins, can not be under a certain height stops, so the necessary inertia of the sensor of sonde is little, the so rapidly variation of response external environment, the meteorological element value on each height of more correct reflection.In addition, sonde all is disposable use usually, so sensor is fairly simple.What its was measured all is relative quantity, before formal release, carry out once " ground-check ", the relative value of sensor and the absolute value of its environment of living in is connected, in order to easily process and convert with surveying to record afterwards.It is a comparatively hard problem that sonde is measured high-altitude humidity, and it consists of humidity sensor by the wet element of the senses such as hair, casing, resistance or electric capacity.No matter adopt the wet element of which kind of sense, the wet mode of the sense of its element all is absorption type, and therefore, the humidity measurement result certainly exists certain hysteresis.Based on previous reasons, sonde " ground-check " work before lift-off seems very important.
For civilian humidity sensor, because environmental change is relatively slow, its response characteristic requires relatively low.In view of external relevant expensive, therefore, the manual method of recommendation is carried out calibration measurements in the national standard of China, and its complex operation, accuracy are not high, this manual scaling method is for the demarcation of sonde humidity response characteristic, and its weak point is particularly outstanding.Certainly, those skilled in the relevant art have obtained certain achievement by effort.Such as China Patent Publication No. CN101949747A, open January 9 2011 date, invention and created name " humidity sensing element dynamic response characteristic calibration measurements system and measuring method ", this measuring system comprises two saturated salt containers that are arranged in the water bath, two interior saturated salt solution tops of saturated salt container consist of respectively two test chambers that humidity is different, two test chambers pass through pipeline, solenoid valve, the connections such as vacuum cycle pump, solenoid valve, vacuum cycle pumps etc. by electric bridge and control box control, can carry out the quick switching of 250～300ms by computing machine with the humidity that realizes two test chambers.By in two test chambers, placing respectively a humidity sensing element, utilization is suitable for the scaling method of native system and realizes the dynamic response characteristic of humidity sensing element is carried out test calibration, this measuring system is practical for civilian humidity sensor, but it is very difficult to want two test chambers to be arranged to the simulated environment of sonde, its computer-controlled program design relative complex, the operating process of whole test calibration will be very very long also.Therefore, this system is not suitable for sonde humidity dynamic calibration.Owing to there is no Perfected process and the device that is applicable to sonde humidity dynamic calibration at present, therefore, the ground-check work before the calibrating after the sonde manufacturing is finished and the lift-off is all very loaded down with trivial details, and calibration result whether ideal to there is no method definite.The sonde of producing such as different manufacturers after the lift-off of same region, its pressure, highly, the detecting structure of longitude and latitude, temperature, wind speed and direction is very nearly the same, and the humidity result of detection differs greatly.For this reason, need to improve.
Summary of the invention
The first purpose of the present invention is exactly for the deficiencies in the prior art, provide a kind of double-current method to demarcate the method for sonde humidity dynamic response characteristic, this scaling method carries out dynamic calibration by the dynamic environment that a simulation sonde lift-off process is provided to sonde humidity dynamic response characteristic, to solve the very long and inaccurate problem of demarcation of sonde humidity demarcating process.The second purpose of the present invention provides the device that a kind of double-current method is demarcated sonde humidity dynamic response characteristic, utilizes this caliberating device can realize convenient, fast, exactly the demarcation of sonde humidity dynamic response characteristic.
For achieving the above object, the present invention adopts following technical scheme:
A kind of double-current method is demarcated the method for sonde humidity dynamic response characteristic, comprise a sonde test cabinet is set, in this measuring cell, flow to phasing to the gas of humidity and install sonde, receive and record in real time the humidity probe value of sonde, the gas of described given relative humidity is uniformly mixed to form the nitrogen of given relative humidity by the saturated humidity nitrogen of the drying nitrogen of one tunnel known quantity and another road known quantity, the nitrogen of given relative humidity has identical and controlled environment temperature with test cabinet, this environment temperature can be simulated sonde lift-off height change and carry out respective change, and the nitrogen pressure of given relative humidity can be simulated sonde lift-off height change and be carried out corresponding adjusting by the set pressure Changing Pattern in the test cabinet.
Adopt the present invention of aforementioned techniques scheme, because the environment temperature in the sonde test cabinet, humidity and pressure can be simulated sonde lift-off height change and be carried out respective change or adjusting, and the gas of given humidity adopts nitrogen, its test environment is good with the accordance that imposes a condition, humidity probe value and the set-point of the sonde by real-time reception and record compare, just can calculate easily and response time of definite sonde Humidity Detection characteristic and real-time difference, thereby determine its resonse characteristic, when the actual lift-off of sonde is used, utilize this family curve that the real-time humidity test value of sonde is revised, just can accurately obtain the real-time humidity of air at sonde height of living in and longitude and latitude place.
Preferably, the set-point of the nitrogen of described given relative humidity is adjustable.Carry out respective change with simulation sonde lift-off height change, improve the accuracy of the real-time humidity test result of sonde.
Preferably, the set-point of the nitrogen of described given relative humidity also adopts dew point hygrometer to detect.By dew point hygrometer the testing result of a plurality of given relative humidity and calculated value or the title theoretical value of given humidity are compared, revise with this humidity characteristic curve to sonde, can further guarantee the accuracy of sonde humidity characteristic curve.
A kind of double-current method is demarcated the device of sonde humidity dynamic response characteristic, comprise a control system, a temperature is controlled and fills the water bath of fluid media (medium), be provided with the test cabinet for the sonde humidity measurement in the water bath, the test cabinet top exit is connected with vacuum pump by the first electric controlled regulating valve and pipe fitting, test cabinet connects a heat exchange mixer that is positioned at water bath by a draft tube, and the entrance point of heat exchange mixer is connected with can provide respectively drying nitrogen with set amount and the first air inlet pipeline and second air inlet pipeline of saturated humidity nitrogen; Test cabinet also is connected with vacuum manometer, and vacuum manometer has the passage that carries out the pressure signal transmission with described control system.
Adopt the present invention of aforementioned techniques scheme, the temperature of test cabinet build-in test environment can raise gradually, reduce gradually or keep invariable condition; The humidity of test cabinet build-in test environment changes with the drying nitrogen of the first air inlet pipeline and the second air inlet pipeline and the set amount of saturated humidity nitrogen, when the drying nitrogen set amount is zero, the test indoor humidity is 100%, when the set amount of saturated humidity nitrogen was zero, the test indoor humidity was 0%; Force value in the test cabinet is transferred to control system by vacuum manometer, control system compares pressure measured value and setting value, pressure measured value and setting value are not simultaneously, control system is by the aperture of control by vacuum pump start and stop and adjustment the first electric controlled regulating valve, air pressure in the test cabinet reaches certain vacuum tightness, and this force value can simulate that pressure in the sonde lift-off process changes and by the variation of setting rule; When sonde being placed when testing in the test cabinet, temperature, humidity and pressure to the test environment in the test cabinet are set and record in advance, humidity measurement value by real-time reception and record sonde, can determine the dynamic psychrometric response characteristic of this sonde, thereby obtain its family curve.
Preferably, described the first air inlet pipeline is connected on the steam line of laying in the nitrogen cylinder that liquid nitrogen is arranged by the first mass flowmeter and the second electric controlled regulating valve; Described the second air inlet pipeline is connected with steam-water separator in turn by pipe fitting and is used for drying nitrogen is carried out the saturated humidifier of water-ice of saturability humidification, is connected with the steam line of described nitrogen cylinder with the 3rd electric controlled regulating valve by the second mass flowmeter successively on the inlet ductwork of the saturated humidifier of water-ice; The saturated humidifier of described water-ice all is arranged in the described water bath; Described the first mass flowmeter and the second mass flowmeter all have the passage that carries out the flow signal transmission with described control system.The saturated humidifier of described water-ice is the granted patent of Chinese patent Granted publication CN101619880B bulletin, and its invention and created name is " column plate type water, hail and air humidifier ".This humidifier can form the saturated wet environment that adds, when gas enters this saturated wet environment that adds can be by saturated humidification.Therefore, after the pipeline of flowing through at drying nitrogen arranged this humidifier, the nitrogen that flows out this humidifier just formed the nitrogen with saturated humidity, and the moisture that condenses in the nitrogen of steam-water separator with saturated humidity separates to form the saturated humidity nitrogen of pure gaseous state.Control system is calculated the humidity of combination gas according to the metering result of the first mass flowmeter and the second mass flowmeter, and with this humidity with set humidity ratio, respectively the second electric controlled regulating valve and the 3rd electric controlled regulating valve are carried out flow regulation, the calculating humidity that reaches combination gas equates with setting humidity.
Further preferred, also be connected with the detection bypass that an available dew point hygrometer detects humidity on the described draft tube pipeline, detect bypass and be provided with gate valve, gate valve is positioned at the pipeline section section of dew point hygrometer entrance point; The pipeline section that draft tube is used for being connected with test cabinet is provided with stop valve.By dew point hygrometer the calculated amount of a plurality of setting humidity in each stage or title theory setting amount are carried out calibration validation by turn-offing stop valve with convenient, thereby further guarantee the accuracy of determined sonde dynamic psychrometric resonse characteristic.
Preferably, described water bath bottom is provided with heating and the refrigerating plant for heating and cooling water bath inner fluid medium, and heating is connected with control system with refrigerating plant; Also be provided with the temperature element for detection of water bath inner fluid medium temperature in the water bath, temperature element has to the transmission channel of control system transmission temperature signal.So that the fluid media (medium) temperature in the water bath is controlled, thereby for providing, test cabinet simulates the environment that sonde lift-off process temperature changes.
Preferably, described heat exchange mixer is helix.Because gas has extremely strong diffusivity, dry and saturated humidity nitrogen can mix in the short period of time, and therefore, the heat exchange mixer adopts helix to get final product, and also is convenient to heat interchange, with simplified structure, reduces manufacturing cost.
Preferably, also be provided with pressure-regulating valve on the steam line of described nitrogen cylinder.Demarcate stablizing under the supply gas pressure condition with characteristic and to carry out, guarantee that staking-out work can normally continue to carry out.
The invention has the beneficial effects as follows, scaling method is under the test environment conditions of simulation sonde lift-off process, its humidity dynamic response characteristic curve is demarcated by collecting a plurality of humidity measurement data, it is demarcated accurately, and its proving operation is simple, it is high to demarcate efficient; Caliberating device is simple in structure, can provide reliable simulation lift-off environment for sonde, guarantees that calibration curve is accurate.
Description of drawings
Fig. 1 is the structural representation of caliberating device of the present invention, and this figure also is used for the aid illustration scaling method.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing, but therefore do not limit the present invention among the described scope of embodiments.
Embodiment 1Referring to Fig. 1, a kind of double-current method is demarcated the method for sonde humidity dynamic response characteristic, comprise sonde test cabinet 2 is set, in this measuring cell 2, flow to phasing to the gas of humidity and install sonde, receive and record in real time the humidity probe value of sonde, the gas of described given relative humidity is uniformly mixed to form the nitrogen of given relative humidity by the saturated humidity nitrogen of the drying nitrogen of one tunnel known quantity and another road known quantity, the nitrogen of given relative humidity has identical and controlled environment temperature with test cabinet 2, this environment temperature can be simulated sonde lift-off height change and carry out respective change, and the nitrogen pressure of 2 given relative humidity can be simulated sonde lift-off height change and be carried out corresponding adjusting by the set pressure Changing Pattern in the test cabinet.
The set-point of the nitrogen of described given relative humidity is adjustable.
The set-point of the nitrogen of described given relative humidity also adopts dew point hygrometer to detect.
Embodiment 2Referring to Fig. 1, a kind of double-current method is demarcated the device of sonde humidity dynamic response characteristic, comprise a control system, one temperature is controlled and fill the water bath 1 of fluid media (medium) 21, be provided with the test cabinet 2 for the sonde humidity measurement in the water bath 1, test cabinet 2 top exits are connected with vacuum pump 4 by the first electric controlled regulating valve 3 and pipe fitting, test cabinet 2 connects a heat exchange mixer 6 that is positioned at water bath 1 by a draft tube 5, and the entrance point of heat exchange mixer 6 is connected with can provide respectively drying nitrogen with set amount and the first air inlet pipeline 7 and second air inlet pipeline 8 of saturated humidity nitrogen; Test cabinet 2 also is connected with vacuum manometer 17, and vacuum manometer 17 has the passage that carries out the pressure signal transmission with described control system.
Described the first air inlet pipeline 7 is connected to deposit and has on the steam line of nitrogen cylinder 11 of liquid nitrogen 12 by the first mass flowmeter 9 and the second electric controlled regulating valve 10; Described the second air inlet pipeline 8 is connected with steam-water separator 13 in turn by pipe fitting and is used for drying nitrogen is carried out the saturated humidifier 14 of water-ice of saturability humidification, is connected with the steam line 12 of described nitrogen cylinder 11 with the 3rd electric controlled regulating valve 16 by the second mass flowmeter 15 successively on the inlet ductwork of the saturated humidifier 14 of water-ice; The saturated humidifier 14 of described water-ice all is arranged in the described water bath 1; Described the first mass flowmeter 9 and the second mass flowmeter 15 all have the passage that carries out the flow signal transmission with described control system.
Also be connected with the detection bypass 19 that an available dew point hygrometer 18 detects humidity on described draft tube 5 pipelines, detect bypass 19 and be provided with gate valve 20, gate valve 20 is positioned at the pipeline section section of dew point hygrometer 18 entrance points; The pipeline section that draft tube 5 is used for being connected with test cabinet 2 is provided with stop valve 25.
Described water bath 1 bottom is provided with heating and the refrigerating plant 22 for heating and cooling water bath 1 inner fluid medium 21, and heating is connected with refrigerating plant and is connected with control system; Also be provided with the temperature element 23 for detection of water bath 1 inner fluid medium 21 temperature in the water bath 1, temperature element 23 has to the transmission channel of control system transmission temperature signal.
Described heat exchange mixer 6 is helix.
Also be provided with pressure-regulating valve 24 on the steam line 12 of described nitrogen cylinder 11.
Although more than combine accompanying drawing and described embodiments of the present invention, but those of ordinary skill in the art can recognize also in the scope to claims and make various variations or modification that these modifications and variations are interpreted as within scope of the present invention and intention.
Claims (9)
1. a double-current method is demarcated the method for sonde humidity dynamic response characteristic, comprise sonde test cabinet (2) is set, in this measuring cell (2), flow to phasing to the gas of humidity and install sonde, receive and record in real time the humidity probe value of sonde, it is characterized in that, the gas of described given relative humidity is uniformly mixed to form the nitrogen of given relative humidity by the saturated humidity nitrogen of the drying nitrogen of one tunnel known quantity and another road known quantity, the nitrogen of given relative humidity has identical and controlled environment temperature with test cabinet (2), this environment temperature can be simulated sonde lift-off height change and carry out respective change, and the nitrogen pressure of (2) given relative humidity can be simulated sonde lift-off height change and be carried out corresponding adjusting by the set pressure Changing Pattern in the test cabinet.
2. double-current method according to claim 1 is demarcated the method for sonde humidity dynamic response characteristic, and it is characterized in that: the set-point of the nitrogen of described given relative humidity is adjustable.
3. double-current method according to claim 1 is demarcated the method for sonde humidity dynamic response characteristic, it is characterized in that: the set-point of the nitrogen of described given relative humidity also adopts dew point hygrometer to detect.
4. a double-current method is demarcated the device of sonde humidity dynamic response characteristic, comprise a control system, one temperature is controlled and fill the water bath (1) of fluid media (medium) (21), be provided with the test cabinet (2) for the sonde humidity measurement in the water bath (1), it is characterized in that, described test cabinet (2) top exit is connected with vacuum pump (4) by the first electric controlled regulating valve (3) and pipe fitting, test cabinet (2) connects a heat exchange mixer (6) that is positioned at water bath (1) by a draft tube (5), and the entrance point of heat exchange mixer (6) is connected with can provide respectively drying nitrogen with set amount and the first air inlet pipeline (7) and second air inlet pipeline (8) of saturated humidity nitrogen; Test cabinet (2) also is connected with vacuum manometer (17), and vacuum manometer (17) has the passage that carries out the pressure signal transmission with described control system.
5. double-current method according to claim 4 is demarcated the device of sonde humidity dynamic response characteristic, it is characterized in that: described the first air inlet pipeline (7) is connected on the steam line of laying in the nitrogen cylinder (11) that liquid nitrogen is arranged (12) by the first mass flowmeter (9) and the second electric controlled regulating valve (10); Described the second air inlet pipeline (8) is connected with steam-water separator (13) in turn by pipe fitting and is used for drying nitrogen is carried out the saturated humidifier of water-ice (14) of saturability humidification, is connected with the steam line (12) of described nitrogen cylinder (11) with the 3rd electric controlled regulating valve (16) by the second mass flowmeter (15) successively on the inlet ductwork of the saturated humidifier of water-ice (14); The saturated humidifier of described water-ice (14) all is arranged in the described water bath (1); Described the first mass flowmeter (9) and the second mass flowmeter (15) all have the passage that carries out the flow signal transmission with described control system.
6. double-current method according to claim 5 is demarcated the device of sonde humidity dynamic response characteristic, it is characterized in that: also be connected with the detection bypass (19) that an available dew point hygrometer (18) detects humidity on described draft tube (5) pipeline, detect bypass (19) and be provided with gate valve (20), gate valve (20) is positioned at the pipeline section section of dew point hygrometer (18) entrance point; The pipeline section that draft tube (5) is used for being connected with test cabinet (2) is provided with stop valve (25).
7. double-current method according to claim 4 is demarcated the device of sonde humidity dynamic response characteristic, it is characterized in that: described water bath (1) bottom is provided with heating and the refrigerating plant (22) for heating and cooling water bath (1) inner fluid medium (21), and heating is connected 22 with refrigerating plant) be connected with control system; Also be provided with the temperature element (23) for detection of water bath (1) inner fluid medium (21) temperature in the water bath (1), temperature element (23) has to the transmission channel of control system transmission temperature signal.
8. double-current method according to claim 4 is demarcated the device of sonde humidity dynamic response characteristic, and it is characterized in that: described heat exchange mixer (6) is helix.
9. the described double-current method of any one claim is demarcated the device of sonde humidity dynamic response characteristic according to claim 4～8, it is characterized in that: also be provided with pressure-regulating valve (24) on the steam line (12) of described nitrogen cylinder (11).
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103675953A (en) * | 2013-12-12 | 2014-03-26 | 北京市国瑞智新技术有限公司 | Detection box used for measuring ground base of electronic sonde |
| CN104698135A (en) * | 2015-03-16 | 2015-06-10 | 东南大学 | Device and method for measuring response time of humidity sensor |
| CN105388540A (en) * | 2015-10-23 | 2016-03-09 | 黑河学院 | Temperature, humidity and pressure integrated generator for temperature and humidity sensor calibration |
| CN106597573A (en) * | 2016-12-09 | 2017-04-26 | 中国人民解放军陆军军官学院 | Simulated sonde and sonde device |
| CN105183027B (en) * | 2015-10-10 | 2017-11-07 | 南京信息工程大学 | A kind of gas humidity automatic control system for cloud chamber |
| CN110850024A (en) * | 2018-08-21 | 2020-02-28 | 中国计量科学研究院 | Water detection calibration system, detection model establishing method and water detection method |
| CN111026177A (en) * | 2019-12-18 | 2020-04-17 | 北京航空航天大学 | System and method for controlling humidity in alkali metal air chamber |
| CN112628960A (en) * | 2020-12-01 | 2021-04-09 | 珠海格力电器股份有限公司 | Air conditioner, humidity correction method, computer equipment, medium, terminal and application |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103675953A (en) * | 2013-12-12 | 2014-03-26 | 北京市国瑞智新技术有限公司 | Detection box used for measuring ground base of electronic sonde |
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| CN104698135A (en) * | 2015-03-16 | 2015-06-10 | 东南大学 | Device and method for measuring response time of humidity sensor |
| CN105183027B (en) * | 2015-10-10 | 2017-11-07 | 南京信息工程大学 | A kind of gas humidity automatic control system for cloud chamber |
| CN105388540A (en) * | 2015-10-23 | 2016-03-09 | 黑河学院 | Temperature, humidity and pressure integrated generator for temperature and humidity sensor calibration |
| CN105388540B (en) * | 2015-10-23 | 2017-11-07 | 黑河学院 | Temperature and humidity pressure comprehensive generator is used in a kind of temperature-humidity sensor calibrating |
| CN106597573A (en) * | 2016-12-09 | 2017-04-26 | 中国人民解放军陆军军官学院 | Simulated sonde and sonde device |
| CN106597573B (en) * | 2016-12-09 | 2017-10-17 | 中国人民解放军陆军军官学院 | One kind simulation sonde and sounding instrument apparatus |
| CN110850024A (en) * | 2018-08-21 | 2020-02-28 | 中国计量科学研究院 | Water detection calibration system, detection model establishing method and water detection method |
| CN111026177A (en) * | 2019-12-18 | 2020-04-17 | 北京航空航天大学 | System and method for controlling humidity in alkali metal air chamber |
| CN112628960A (en) * | 2020-12-01 | 2021-04-09 | 珠海格力电器股份有限公司 | Air conditioner, humidity correction method, computer equipment, medium, terminal and application |
| CN112628960B (en) * | 2020-12-01 | 2021-11-30 | 珠海格力电器股份有限公司 | Air conditioner, humidity correction method, computer equipment, medium, terminal and application |
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Application publication date: 20130327 |