CN204882904U - Automatically, evaporate measurement system based on hold bars formula displacement sensor - Google Patents
Automatically, evaporate measurement system based on hold bars formula displacement sensor Download PDFInfo
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- CN204882904U CN204882904U CN201520580597.1U CN201520580597U CN204882904U CN 204882904 U CN204882904 U CN 204882904U CN 201520580597 U CN201520580597 U CN 201520580597U CN 204882904 U CN204882904 U CN 204882904U
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- evaporation tank
- displacement sensor
- evaporation
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Abstract
The utility model discloses an automatically, evaporate measurement system based on hold bars formula displacement sensor, the system includes rain gage bucket, evaporation tank, overflow ladle, moisturizing device, an appearance bars formula hyetometer and two at least appearance bars formula displacement sensor, the evaporation tank surface surrounds there is the hydrosphere, leave at the evaporation tank top has the spout hole, the evaporation tank process the spout hole passes through the overflow pipe to be connected with the overflow ladle, the moisturizing device with the evaporation tank is connected, the evaporation tank with a communicating pipe is connected respectively to the overflow ladle place one in the rain gage bucket and hold bars formula hyetometer, and place one respectively and hold bars formula displacement sensor in two communicating pipes. The utility model discloses a holding bars formula displacement sensor and measuring evaporation capacity and spillway discharge, measurement accuracy is high, also can carry out the measurement of accuracy period in strong rainfall.
Description
Technical field
The utility model relates to the evaporation field of measuring technique of the hydrology, Meteorological Field, is specifically related to a kind of automatic evaporation measuring system based on displacement sensor of variable capacitor.
Background technology
Automatic evaporation is measured needs measurement three physical quantitys, the evaporation capacity of evaporation tank, the spillway discharge of overflow ladle, rainfall amount usually.The evaporation capacity of the evaporation from water surface device of the type just can be obtained by three physical quantitys.What traditional automatic evaporate station adopted is ultrasonic wave principle or float mechanical coding principle, based on the automatic evaporate station of ultrasonic wave principle, temperature and wind speed make a big impact to measurement, based on the automatic evaporate station of float mechanical coding principle, install complicated, and can machine error be there is in Long-Time Service.Though based on ultrasonic wave principle or based on float mechanical coding principle, because it adopts tipping bucket type rain gage bucket, all cannot in heavy showers situation Measurement accuracy evaporation capacity.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of automatic evaporation measuring system based on displacement sensor of variable capacitor, can solve the deficiencies in the prior art.
The technical scheme that the utility model solves the problems of the technologies described above is as follows:
The utility model provides a kind of automatic evaporation measuring system based on displacement sensor of variable capacitor, and described system comprises rain gage bucket, evaporation tank, overflow ladle, water replanishing device, a capacitance-grid type rain gage and at least two displacement sensor of variable capacitor; Described evaporation tank outside surface is surrounded by hydrosphere, described evaporation tank top has spout hole, evaporation tank is connected with overflow ladle by run-down pipe through described spout hole, water replanishing device is connected with described evaporation tank, described evaporation tank is connected a communicating pipe respectively with described overflow ladle, in described rain gage bucket, place a capacitance-grid type rain gage, and in two communicating pipes, place a displacement sensor of variable capacitor respectively.
The beneficial effects of the utility model are: adopt displacement sensor of variable capacitor to measure the evaporation capacity in evaporation tank and the spillway discharge in overflow ladle, and adopt capacitance-grid type rain gage to measure the rainfall amount in rain gage bucket, measuring accuracy is high, and can realize when heavy showers automatically evaporating measurement.
On the basis of technique scheme, the improvement of following scheme can also be done.
Further, described water replanishing device comprises filling pipe, moisturizing solenoid valve, cistern, submersible pump and running water pipe, described running water pipe is connected with cistern, described cistern connects described evaporation tank by filling pipe, described filling pipe is provided with moisturizing solenoid valve to control the opening and closing of filling pipe, described submersible pump is arranged in cistern.
Described further beneficial effect is: by water replanishing device to moisturizing in evaporation tank, makes the liquid level in evaporation tank meet the requirement of evaporation measurement.
Further, all have a filter bores bottom described evaporation tank with bottom described overflow ladle, evaporation tank and overflow ladle connect pipe by filter bores.
Further, in described evaporation tank, be also provided with temperature sensor, to measure the water temperature in evaporation tank.
Further, be provided with unwatering pump in described overflow ladle, when the water in overflow ladle fills with, unwatering pump carries out draining to overflow ladle.
Described further beneficial effect is: by arranging unwatering pump in overflow ladle, prevents overflow ladle filled with water from overflowing.
Further, described displacement sensor of variable capacitor comprises float, dynamic chi, scale, demodulator circuit and liquid level output unit, a dynamic chi is fixed above described float, a scale placed by dynamic chi, described scale connects the input end of demodulator circuit, the output terminal of described demodulator circuit connects liquid level output unit, and communicating pipe put into by described float.
Further, vertically place a rule on the communicating pipe side be connected with described evaporation tank, the liquid level in described communicating pipe is measured.
Further, near described rule, a camera is settled, to monitor in real time rule.
Accompanying drawing explanation
Fig. 1 is a kind of automatic evaporation measuring system schematic diagram based on displacement sensor of variable capacitor of the utility model embodiment;
Fig. 2 is the anatomical connectivity schematic diagram of displacement sensor of variable capacitor in the utility model embodiment.
In accompanying drawing, each part numbers is as follows:
1, rain gage bucket, 2, evaporation tank, 3, overflow ladle, 4, water replanishing device, 41, filling pipe, 42, moisturizing solenoid valve, 43, cistern, 44, submersible pump, 45, running water pipe, 5, capacitance-grid type rain gage, 6, spout hole, 7, run-down pipe, 8, communicating pipe, 9, temperature sensor, 10, unwatering pump, 11, filter bores, 12, displacement sensor of variable capacitor, 121, float, 122, dynamic chi, 123, scale, 124, demodulator circuit, 125, liquid level sensor, 13, rule, 14, camera, 15, hydrosphere.
Embodiment
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
Embodiment, a kind of automatic evaporation measuring system based on displacement sensor of variable capacitor.Below in conjunction with Fig. 1 and Fig. 2, the automatic evaporation measuring system that the present embodiment provides is described in detail.
See Fig. 1, the system that the present embodiment provides comprises rain gage bucket 1, evaporation tank 2, overflow ladle 3, water replanishing device 4, capacitance-grid type rain gage 5 and at least two displacement sensor of variable capacitor 12; Described evaporation tank 2 outside surface is surrounded by hydrosphere 15, described evaporation tank 2 top has spout hole 6, evaporation tank 2 is connected with overflow ladle 3 by run-down pipe 7 through described spout hole 6, water replanishing device 4 is connected with described evaporation tank 2, described evaporation tank 2 is connected a communicating pipe 8 respectively with described overflow ladle 3, in described rain gage bucket 1, place a capacitance-grid type rain gage 5, in two communicating pipe 8, all place a displacement sensor of variable capacitor 12.Wherein, water replanishing device 4 comprises filling pipe 41, moisturizing solenoid valve 42, cistern 43, submersible pump, running water pipe 45, described running water pipe 45 is connected with cistern 43, described cistern 43 connects described evaporation tank 2 by filling pipe 41, described filling pipe 41 is provided with moisturizing solenoid valve 42 to control the opening and closing of filling pipe 41, described submersible pump is arranged in cistern 43.All have a filter bores 11 bottom described evaporation tank 2 with bottom described overflow ladle 3, evaporation tank 2 and overflow ladle 3 connect pipe 8 by filter bores 11.Be provided with unwatering pump 10 in described overflow ladle 3, when the water in overflow ladle 3 fills with, unwatering pump 10 pairs of overflow ladles 3 carry out draining.
In addition, see Fig. 2, displacement sensor of variable capacitor 12 comprises float 121, dynamic chi 122, scale 123, demodulator circuit 124 and liquid level output unit 125, a dynamic chi 122 is fixed above described float 121, a scale 123 placed by dynamic chi 122, described scale 123 connects the input end of demodulator circuit 124, and the output terminal of described demodulator circuit 124 connects liquid level output unit 125, and communicating pipe 8 put into by described float 121.Place a rule 13 on communicating pipe 8 side be connected with evaporation tank 2, the liquid level in communicating pipe 8 is measured, nearby settles a camera 14, to monitor in real time rule 13 at rule 13.
Wherein, evaporation tank 2 is mainly used in measuring evaporation capacity, and hydrosphere 15 is enclosed in the outside surface of evaporation tank 2, and for simulating nature waters, hydrosphere 15 and evaporation tank 2 are all embedded in figure, the impact of measuring for evaporation with compensation temperature or heat radiation.Water replanishing device 4 for giving moisturizing inside evaporation tank 2 and hydrosphere 15, the requirement that makes the liquid level in evaporation tank 2 meet evaporation to measure (in evaporation tank 2, liquid level is too high or too low all cannot Measurement accuracy evaporation capacity).Also be provided with temperature sensor 9 in evaporation tank 2, for the water temperature in real time record evaporation tank 2, in conjunction with the evaporation capacity in the evaporation tank 2 measured, the relation between water temperature and evaporation capacity can be detected in real time.
Overflow ladle 3, be mainly used in access because water diffuses out in the evaporation tank 2 that causes of heavy showers, communicating pipe 8 is connected with bottom evaporation tank 2 He bottom overflow ladle 3, due to the action principle of communicating pipe 8, Complete Synchronization when liquid level change in communicating pipe 8 change with the liquid level in evaporation tank 2 and overflow ladle 3, so the liquid level detected in communicating pipe 8 changes can measure evaporation capacity and spillway discharge.Rain gage bucket 1, is mainly used in measuring the amount of rainfall, and prevents from causing because of rainfall amount measuring evaporation capacity.
Cistern 43 and evaporation tank 2 can adopt the tap water in local city planting ductwork, and tap water first deposits 5 ~ 10d in cistern 43, makes its water temperature reach state of nature, then joins in evaporation tank 2.The detailed process that evaporation tank 2 changes water and moisturizing is: by running water pipe 45 to water filling in cistern 43, when the liquid level in evaporation tank 2 is lower than setting value, by the moisturizing solenoid valve 42 on control filling pipe 41 to moisturizing in evaporation tank 2, the liquid level in evaporation tank 2 is made to arrive preset value, to meet the requirement that evaporation capacity is measured.
In the process measuring evaporation capacity in evaporation tank, need to measure several fundamental physical quantity, water surface elevation, quantity of precipitation and spillway discharge in water surface elevation, Fixed Initial Point evaporation tank in evaporation tank when namely measuring.Concrete computing method have:
(1) without the algorithm of evaporation capacity during precipitation:
Water surface elevation during evaporation capacity=measurement-Fixed Initial Point water surface elevation.
(2) algorithm of evaporation capacity during quantity of precipitation is had:
Water surface elevation-quantity of precipitation-Fixed Initial Point water surface elevation during evaporation capacity=measurement.
(3) have precipitation and produce overflow time evaporation capacity algorithm:
Water surface elevation+spillway discharge-quantity of precipitation-Fixed Initial Point water surface elevation during evaporation capacity=measurement.
Concrete in the process measuring water surface elevation in evaporation tank 2 water surface elevation, overflow ladle 3, adopt displacement sensor of variable capacitor 12 to measure, in the communicating pipe 8 be connected with evaporation tank 2 and the communicating pipe 8 be connected with overflow ladle 3, all place a displacement sensor of variable capacitor 12.Wherein, can see Fig. 2, for the schematic diagram adopting displacement sensor of variable capacitor 12 to measure water surface elevation in communicating pipe 8, in communicating pipe 8, the change of liquid level can make the float 121 be placed in communicating pipe 8 move thereupon, thus dynamic chi 122 is changed thereupon, dynamic chi 122 can read corresponding liquid level variable quantity by corresponding demodulator circuit 124 to the relative displacement of scale 123.
Displacement sensor of variable capacitor 12 is a kind of based on variable area principle of work, for measuring the capacitance digital sensor of Large travel range.It and other digital displacement transducer, as grating, inductosyn etc. are compared, have that volume is little, structure be simple, resolution and accuracy is high, measuring speed is fast, power consumption is little, cost is low, to the environment for use outstanding feature such as less demanding, therefore occupy very consequence in electronic measurement technique.Displacement sensor of variable capacitor is widely used at present, resolution 0.01mm, precision ± 0.02mm.The built-in special demodulator circuit 124 of displacement sensor of variable capacitor 12, direct acquisition measurement result, and it is extremely low to measure power consumption, a joint button cell can use 1-2, just can measure the evaporation capacity in evaporation tank 2 and the spillway discharge in overflow ladle 3 by capacitive displacement transducer 12.
Capacitance-grid type rain gage 5 is adopted when measuring the quantity of precipitation in rain gage bucket 1, capacitance-grid type rain gage 5 is one of the important instrument in hydrology equipment, make based on capacitor grid transducer, resolution due to capacitor grid transducer is 0.01, so the udometric metering of capacitance-grid type is very accurate, precision can reach 0.02mm.And capacitance-grid type rain gage also can be measured in heavy showers period accurately.
In addition, vertically place a rule 13 on communicating pipe 8 side be connected with described evaporation tank 2, the liquid level in described communicating pipe 8 is measured.Aforementionedly be measured as automatic measurement by the evaporation capacity in displacement sensor of variable capacitor 12 pairs of evaporation tanks 2, liquid level change in evaporation tank 2 can by demodulator circuit 124 demodulation in displacement sensor of variable capacitor 12 out and exported the change of liquid level in evaporation tank by liquid level output unit 125, and rule 13 is by manual observation, as supplementing of measuring displacement sensor of variable capacitor 12.In addition, near rule, settle a camera 14, to monitor in real time rule 13, and then understand the evaporation capacity in evaporation tank 2 in real time.
The utility model adopts displacement sensor of variable capacitor to measure the evaporation capacity in evaporation tank and the spillway discharge in overflow ladle, and adopt capacitance-grid type rain gage to measure the rainfall amount in rain gage bucket, measuring accuracy is high, and can realize when heavy showers automatically evaporating measurement.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. the automatic evaporation measuring system based on displacement sensor of variable capacitor, it is characterized in that, described system comprises rain gage bucket (1), evaporation tank (2), overflow ladle (3), water replanishing device (4), a capacitance-grid type rain gage (5) and at least two displacement sensor of variable capacitor (12), described evaporation tank (2) outside surface is surrounded by hydrosphere (15), described evaporation tank (2) top has spout hole (6), evaporation tank (2) is connected with overflow ladle (3) by run-down pipe (7) through described spout hole (6), water replanishing device (4) is connected with described evaporation tank (2), described evaporation tank (2) is connected a communicating pipe (8) respectively with described overflow ladle (3), a capacitance-grid type rain gage (5) is placed in described rain gage bucket (1), and in two communicating pipe (8), place a displacement sensor of variable capacitor (12) respectively.
2. a kind of automatic evaporation measuring system based on displacement sensor of variable capacitor as claimed in claim 1, it is characterized in that, described water replanishing device (4) comprises filling pipe (41), moisturizing solenoid valve (42), cistern (43), submersible pump and running water pipe (45), described running water pipe (45) is connected with cistern (43), described cistern (43) connects described evaporation tank (2) by filling pipe (41), described filling pipe (41) is provided with moisturizing solenoid valve (42) to control the opening and closing of filling pipe (41), described submersible pump is arranged in cistern (43).
3. a kind of automatic evaporation measuring system based on displacement sensor of variable capacitor as claimed in claim 1, it is characterized in that, described evaporation tank (2) bottom all has a filter bores (11) with described overflow ladle (3) bottom, and evaporation tank (2) and overflow ladle (3) are connected by filter bores (11) manages (8).
4. a kind of automatic evaporation measuring system based on displacement sensor of variable capacitor as claimed in claim 3, it is characterized in that, temperature sensor (9) is also provided with, to measure the water temperature in evaporation tank (2) in described evaporation tank (2).
5. a kind of automatic evaporation measuring system based on displacement sensor of variable capacitor as claimed in claim 1, it is characterized in that, unwatering pump (10) is provided with in described overflow ladle (3), when the water in overflow ladle (3) fills with, unwatering pump (10) carries out draining to overflow ladle (3).
6. a kind of automatic evaporation measuring system based on displacement sensor of variable capacitor as claimed in claim 1, it is characterized in that, described displacement sensor of variable capacitor (12) comprises float (121), dynamic chi (122), scale (123), demodulator circuit (124) and liquid level output unit (125), a dynamic chi (122) is fixed in described float (121) top, the upper placement scale (123) of dynamic chi (122), described scale (123) connects the input end of demodulator circuit (124), the output terminal of described demodulator circuit (124) connects liquid level output unit (125), described float (121) is put into communicating pipe (8).
7. a kind of automatic evaporation measuring system based on displacement sensor of variable capacitor as claimed in claim 6, it is characterized in that, vertically place a rule (13) on communicating pipe (8) side be connected with described evaporation tank (2), the liquid level in described communicating pipe (8) is measured.
8. a kind of automatic evaporation measuring system based on displacement sensor of variable capacitor as claimed in claim 7, it is characterized in that, nearby a camera (14) is settled, to monitor in real time rule (13) at described rule (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520580597.1U CN204882904U (en) | 2015-08-04 | 2015-08-04 | Automatically, evaporate measurement system based on hold bars formula displacement sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520580597.1U CN204882904U (en) | 2015-08-04 | 2015-08-04 | Automatically, evaporate measurement system based on hold bars formula displacement sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037503A (en) * | 2016-12-23 | 2017-08-11 | 北京美科华仪科技有限公司 | A kind of evaporation from water surface measurement apparatus and system |
| CN114545524A (en) * | 2022-02-24 | 2022-05-27 | 华中科技大学 | Water surface evaporator for lakes and rivers |
| CN117516656A (en) * | 2024-01-02 | 2024-02-06 | 天地伟业技术有限公司 | System and method for measuring evaporation capacity of natural water area by image |
-
2015
- 2015-08-04 CN CN201520580597.1U patent/CN204882904U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037503A (en) * | 2016-12-23 | 2017-08-11 | 北京美科华仪科技有限公司 | A kind of evaporation from water surface measurement apparatus and system |
| CN107037503B (en) * | 2016-12-23 | 2023-06-27 | 北京美科华仪科技有限公司 | Water surface evaporation measuring device and system |
| CN114545524A (en) * | 2022-02-24 | 2022-05-27 | 华中科技大学 | Water surface evaporator for lakes and rivers |
| CN114545524B (en) * | 2022-02-24 | 2023-03-10 | 华中科技大学 | Water surface evaporator for lakes and rivers |
| CN117516656A (en) * | 2024-01-02 | 2024-02-06 | 天地伟业技术有限公司 | System and method for measuring evaporation capacity of natural water area by image |
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Address after: 430000 unit 1, floor 1-5, building 3-11, phase III, optical core center, 303 Guanggu Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: WUHAN NEWFIBER PHOTOELECTRIC Co.,Ltd. Address before: 11 / F, building C3, optical valley software park, special 1, Guanshan Avenue, Donghu Development Zone, Wuhan City, Hubei Province, 430000 Patentee before: WUHAN NEWFIBER OPTOELECTRONIC TECHNOLOGY Co.,Ltd. |