CN202126510U - Ultrasonic rainfall measuring device based on single chip microcomputer - Google Patents
Ultrasonic rainfall measuring device based on single chip microcomputer Download PDFInfo
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- CN202126510U CN202126510U CN2011202185964U CN201120218596U CN202126510U CN 202126510 U CN202126510 U CN 202126510U CN 2011202185964 U CN2011202185964 U CN 2011202185964U CN 201120218596 U CN201120218596 U CN 201120218596U CN 202126510 U CN202126510 U CN 202126510U
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- chip microcomputer
- ultrasonic
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Abstract
The utility model provides a ultrasonic rainfall measuring device based on a single chip microcomputer; the ultrasonic rainfall measuring device comprises a single chip microcomputer, a water intake tube and a measuring tube; the water intake tube comprises a water inlet, a filter screen and a water inlet valve; the structure of the measuring tube is a dual-tube body, the bottom of which is connected with a connecting port; the left tube of the measuring tube is connected with the water intake tube; an ultrasonic probe and a temperature sensor are enclosed and installed above the right tube of the measuring tube; a vent hole is reserved above the right tube wall; the ultrasonic probe and the temperature sensor are connected with the single chip microcomputer. The ultrasonic rainfall measuring device disclosed by utility model has high measurement precision and low cost; and the rainfall under the conditions of any rainfall intensities can be automatically and accurately measured.
Description
Technical field
The utility model relates to a kind of SCM Based ultrasound wave rainfall measurement device, belongs to the meteorological element technical field of measuring, relates in particular to the field of measurement of rainfall, raininess.
Background technology
Mostly the rain gage that meteorological department uses generally is siphon rainfall recorder or tipping-bucket rain-gauge.Siphon rainfall recorder is made up of rain container, siphon, self-recording and four parts of shell.One float chamber is arranged under rain container, indoorly adorn a float and top self-recording nib links.Rainwater flows in the tube, and float rises thereupon, drives simultaneously on the recording pen on the float lever to lift, and on the self-recording paper that rotates the clock tube, draws a time dependent quantity of precipitation upcurve.When the water level in the float chamber reached siphonal top, U trap was just discharged the rainwater in the float chamber rapidly at short notice and is accomplished a siphon.If the precipitation phenomenon continues, then repeat said process again.Can find out Strength Changes, the beginning and ending time of a precipitation process at last, and calculate quantity of precipitation.Because the rainfall in the siphonic process is run off in the lump, thus the loss error produced, and rainfall intensity is big more, and error is big more, because measurement mechanism does not have electric signal interface, handles so can't measure automatically with data in real time.Tipping-bucket rain-gauge is mainly formed to be had: raingauge receiver, last tipping bucket, metering tipping bucket, counting tipping bucket and compositions such as set screw, dried spring.The main effect of last tipping bucket and collecting funnel is to make the natural precipitation of varying strength be converged to approximate fixing amount, through the collecting funnel choker-line, makes the rainwater that injects the metering tipping bucket become one one current.When last tipping bucket holds long-pending rainfall and reaches some values, last tipping bucket overturning, rainwater flows into the metering tipping bucket through collecting funnel.When metering tipping bucket rainfall holds long-pendingly during to some, the overturning of metering tipping bucket is poured rainwater into the counting tipping bucket, and the counting tipping bucket is stirred once, and there is a little magnet steel at the middle part of counting tipping bucket, and there is dried spring the magnet steel upper end.When counting tipping bucket when stirring, magnet steel scan dried spring, make dry-reed contact because of magnetization moment close with once, see a circuit turn-on signal off through twin core cable, through pulse number calculating rainfall.This method is simple to operate, but the subject matter that exists be raininess mistake is big more more, and when changing about tipping bucket, have the loss error, there is the evaporation error in whole device.
Summary of the invention
The order ground of the utility model is the weak point that overcomes prior art; Problem to hydrocone type and tipping-bucket rain-gauge existence; In order to reduce evaporation and to prevent to run off, permeate the rainfall measurement error that causes, a kind of SCM Based ultrasound wave rainfall measurement device is provided.
The SCM Based ultrasound wave rainfall measurement device of the utility model comprises single-chip microcomputer, flooding tube and measurement tube, and said flooding tube comprises water inlet, screen pack and water intaking valve; Said measurement barrel structure is a double shell, and connected entrance is arranged at the double shell bottom; Measure on the tube left-hand cylinder and connect flooding tube, measure right tube closed installation ultrasonic probe in top of tube and temperature sensor, venthole is left in right barrel top; Said ultrasonic probe links to each other with single-chip microcomputer with temperature sensor.
Said water intaking valve and water drain valve are electromagnetic valve.
The principle of the SCM Based ultrasound wave rainfall measurement device of the utility model is: measure when a ultrasonic pulsative signal that the ultrasonic probe on the right tube of tube top sends in the fixed position runs into liquid level and be reflected, obtain hyperacoustic travel-time through calculating the transmitting-receiving time interval after receiving echoed signal; Real time temperature in the temperature sensor measurement cylindrical shell according to the aerial velocity of propagation of measuring under the temperature of ultrasound wave, calculates the distance between liquid level and the tube top, and then obtains liquid level.Because of the water inlet cross-sectional area is to measure 10 times of tube cross-sectional area, then rainfall amount is 1/10 of a liquid level.And, can calculate the raininess of certain time period through the rainfall amount of the double measurement of interval certain hour.
In the utility model, ultrasonic probe links to each other with single-chip microcomputer with temperature sensor, and measurement data is transferred to single-chip microcomputer and is calculated and control by single-chip microcomputer.Water intaking valve and water drain valve all adopt electromagnetic valve, and single chip machine controlling circuit control water intaking valve is closed when rainfall surpasses set threshold value 200mm, and water drain valve is opened to guarantee in the process of discharging water, not causing rainwater to run off then.The ultrasonic probe surface of emission keeps distance more than the 10mm to avoid measuring blind area (the ultrasonic measurement blind area is about 8mm) apart from the venthole lower edge.Measurement result can be carried out processing such as data record, tabulation, picture through the communication interface real-time Transmission by single-chip microcomputer to computing machine.
The SCM Based ultrasound wave rainfall measurement device of the utility model has following technique effect: SCM Based control and processing can realize the robotization of rainfall measurement; Single-chip microcomputer controls water intake valve automatically and water drain valve discharges water, and can uninterruptedly continuously measure automatically; The double valve design can effectively prevent the measuring error that rainwater runs off and causes; The water inlet screen pack can effectively prevent foreign matter entering flooding tubes such as leaf; There is not the infiltration error in whole device; The measurement tube adopts to be communicated with under the double shell to design to effectively reduce measures the liquid fluctuating errors caused that the tube left-hand cylinder causes because of water inlet; Real time temperature is measured can carry out temperature compensation to ultrasonic measurement, avoids the error that causes because of temperature variation; The water inlet area is 10 times of measurement tube floorage, and then actual error is that inevitable measuring error is decayed to 0.1 times; Can improve the accuracy of rainfall measurement greatly through above design.The measuring accuracy of the utility model is high, realizes that cost is low, can under the situation of any raininess, realize to rainfall automatically, measurement exactly.
Description of drawings
Fig. 1 is the structural representation of the SCM Based ultrasound wave rainfall measurement device of the utility model;
Wherein 1 is flooding tube, and 2 is screen pack, and 3 is water intaking valve, and 4 for measuring the tube left-hand cylinder, and 5 is connected entrance, and 6 is water drain valve, and 7 for measuring the right tube of tube, and 8 is venthole, and 9 is ultrasonic probe, temperature sensor installation site, and 10 are the warning line that discharges water.
Embodiment
Come the utility model is done further to specify below in conjunction with accompanying drawing.
As shown in Figure 1, the SCM Based ultrasound wave rainfall measurement device of the utility model comprises single-chip microcomputer, flooding tube 1 and measures tube that flooding tube 1 comprises water inlet, screen pack 2 and water intaking valve 3; Measuring barrel structure is left and right sides double shell, and connected entrance 5 is arranged at the double shell bottom; Measure on the tube left-hand cylinder 4 and connect flooding tube, measure tube right tube closed installation ultrasonic probe in 7 tops and temperature sensor, venthole 8 is left in right barrel top; Ultrasonic probe links to each other with single-chip microcomputer with temperature sensor; Water intaking valve 1 is electromagnetic valve with water drain valve 6.The water inlet cross-sectional area of flooding tube 1 is 10 times of measurement tube cross-sectional area, and ultrasonic probe, temperature sensor installation site 9 are 50mm with the distance of venthole 8, and the distance of measuring the tube end and the warning line 10 that discharges water is 200mm.
In rainfall, at first rainwater gets into flooding tube 1, prevents access to plant through foreign matters such as screen pack 2 isolation leaves, and influence is measured normally.Then, rainwater flow into through water intaking valve 3 and measures a tube left-hand cylinder 4, and flows into through connected entrance 5 and to measure the right tube 7 of tube, about a liquid level in the tube keep equating.The left-hand cylinder liquid level can keep tranquil because of water inlet influence has the right tube of a fluctuation liquid level, the ultrasonic measurement error that can avoid the fluctuation because of liquid level to cause.Measure a venthole 8 of the lateral wall of right tube 7, can make the inside and outside circulation of air of tube, and can be used as gap protection ultrasonic probe and temperature sensor quarter where necessary.Venthole 8 is installed in the above general 20mm place of 200mm warning line.Measure 9 sealings of the right tube of a tube top ultrasonic probe and temperature sensors are installed, can prevent that foreign material from falling into and reduce evaporation capacity.Ultrasonic probe emission ultrasonic signal runs into the liquid level reflection, and probe receives echo then, and single-chip microcomputer is through detecting the real time temperature of the transmitting-receiving time interval and temperature sensor measurement, calculates the height of liquid level according to the velocity of sound under the real time temperature and one way travel time.Because of the area of water inlet area and the xsect of measuring tube than being 10:1, then actual rainfall is 0.1 times of liquid level, and error also is 0.1 times of measuring error.And, can calculate the raininess of certain time period through the rainfall amount of the double measurement of interval certain hour.
Water intaking valve 3 is electromagnetic valve with water drain valve 6.Its groundwork is: when system came into operation, water drain valve 6 cut out, and water intaking valve 3 is opened, and got into normally and measured; When the rainfall in measuring tube reached the 200mm warning line, single-chip microcomputer cut out through circuit control water intaking valve 3, and water drain valve 6 is opened then, gets into to discharge water the stage.At this moment, rainwater remains in the flooding tube and can not cause the loss error.Discharge water finish after, water drain valve 6 cuts out, water intaking valve 3 is opened, and gets into normal measuring phases.Single-chip microcomputer can be transferred to computing machine with measurement result through communication interface and carry out processing such as data record, tabulation, picture.
Claims (2)
1. SCM Based ultrasound wave rainfall measurement device is characterized in that, comprises single-chip microcomputer, flooding tube and measurement tube, and said flooding tube comprises water inlet, screen pack and water intaking valve; Said measurement barrel structure is a double shell, and connected entrance is arranged at the double shell bottom; Measure on the tube left-hand cylinder and connect flooding tube, measure right tube closed installation ultrasonic probe in top of tube and temperature sensor, venthole is left in right barrel top; Said ultrasonic probe links to each other with single-chip microcomputer with temperature sensor.
2. SCM Based ultrasound wave rainfall measurement device according to claim 1 is characterized in that said water intaking valve and water drain valve are electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202185964U CN202126510U (en) | 2011-06-27 | 2011-06-27 | Ultrasonic rainfall measuring device based on single chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202185964U CN202126510U (en) | 2011-06-27 | 2011-06-27 | Ultrasonic rainfall measuring device based on single chip microcomputer |
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| Publication Number | Publication Date |
|---|---|
| CN202126510U true CN202126510U (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202185964U Expired - Fee Related CN202126510U (en) | 2011-06-27 | 2011-06-27 | Ultrasonic rainfall measuring device based on single chip microcomputer |
Country Status (1)
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| CN (1) | CN202126510U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253432A (en) * | 2011-06-27 | 2011-11-23 | 南京信息工程大学 | SCM (single chip microcomputer) based ultrasonic rainfall measurement device |
| CN105652346A (en) * | 2016-01-08 | 2016-06-08 | 河海大学 | Emergency pluviometer with excess infiltration system |
| WO2016108073A1 (en) * | 2014-12-30 | 2016-07-07 | Universidad Cooperativa De Colombia | System for measuring rain and snow |
| CN107193006A (en) * | 2017-05-17 | 2017-09-22 | 武汉理工大学 | A kind of multifunction ultrasonic atmospherium based on ultrasonic ranging |
-
2011
- 2011-06-27 CN CN2011202185964U patent/CN202126510U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253432A (en) * | 2011-06-27 | 2011-11-23 | 南京信息工程大学 | SCM (single chip microcomputer) based ultrasonic rainfall measurement device |
| WO2016108073A1 (en) * | 2014-12-30 | 2016-07-07 | Universidad Cooperativa De Colombia | System for measuring rain and snow |
| EP3242149A4 (en) * | 2014-12-30 | 2018-02-21 | Universidad Cooperativa De Colombia | System for measuring rain and snow |
| CN105652346A (en) * | 2016-01-08 | 2016-06-08 | 河海大学 | Emergency pluviometer with excess infiltration system |
| CN105652346B (en) * | 2016-01-08 | 2017-12-05 | 河海大学 | It is a kind of to carry the super emergent rainfall gauge for oozing system |
| CN107193006A (en) * | 2017-05-17 | 2017-09-22 | 武汉理工大学 | A kind of multifunction ultrasonic atmospherium based on ultrasonic ranging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20130627 |