CN201094064Y - Mechanical-electronic combined filtering accurate air bubble type water gauge - Google Patents
Mechanical-electronic combined filtering accurate air bubble type water gauge Download PDFInfo
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- CN201094064Y CN201094064Y CNU2007201784702U CN200720178470U CN201094064Y CN 201094064 Y CN201094064 Y CN 201094064Y CN U2007201784702 U CNU2007201784702 U CN U2007201784702U CN 200720178470 U CN200720178470 U CN 200720178470U CN 201094064 Y CN201094064 Y CN 201094064Y
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Abstract
The utility model discloses a united mechanical-electronic filtering precision bubble water-level meter which comprises a carrier gas supply detection device, a mechanical filter, a pressure sensor, a pressure gauge, an outlet valve, a gas supply pipeline, a measuring cup, an electronic filter and a recording device. An electric signal output end of the sensor is connected with an input end of the electric filter through a lead. The output end of the electric filter is connected with the input end of the recording device through the lead. The utility model has the advantages that the affection of wave on the accuracy of water level or tide level measurement can be solved effectively by utilizing the united mechanical-electronic filtering, display delay due to mechanic filtering is shortened significantly by the use of a mechanic filter and the affection of complementary wave brought about by the mechanic filter is eliminated by an electronic filter, thereby achieving accurate and quick measurement of water level or tide level. In a certain situation, only the electronic filter is used with the mechanic filter being shortened, to eliminate generally the time delay of measurement.
Description
Technical field
The utility model relates to a kind of air bubble type water level meter, and the accurate air bubble type water level meter of particularly a kind of machinery-electronics associating filtering is used for accurate water level or the tidal level of also measuring rivers,lakes and seas in time.
Background technology
The precision deficiency that existing air bubble type water level, liminmeter cause owing to the influence of wave in measurement, can eliminate the influence of wave though use mechanical filtering separately to measuring accuracy, but have the time lag phenomenon that reaches about 3 minutes, thereby can influence real time of data acquisition.
Summary of the invention
The purpose of this utility model just provides the accurate air bubble type water level meter of a kind of machinery-electronics associating filtering, to solve wave that prior art exists influence and the real time of data acquisition to the level measuring precision.
The technical solution of the utility model is: comprise feeding mechanism, air delivering pipeline, measuring cup, mechanical filter, pressure transducer, electronic filter and the registering instrument of measuring carrier gas.Measuring the carrier gas feeding mechanism is connected with measuring cup with an end of described mechanical filter by air delivering pipeline, the other end of this mechanical filter is connected with pressure transducer, it is characterized in that: after the pressure signal of the described mechanical filter filtering of process imports pressure transducer into, the output electric signal of this pressure transducer at first is connected with electronic filter by lead, the output signal of electronic filter is connected with the input end of registering instrument by lead again, and electronic filter can provide the accurate actual water level of the fluctuation water surface.
Described electronic filter comprises low-pass filter A, intermediate amplifier C, alternating component amplifier D and the subtracter B that is used for filtering height, intermediate wave, the output terminal of low-pass filter amplifier A is connected with the input end of alternating component amplifier D with intermediate amplifier C, the output terminal of intermediate amplifier C and alternating component amplifier D is connected with two input ends of subtracter B respectively, and the output terminal of subtracter B is connected with the input end of described registering instrument.
Described registering instrument comprises A/D converter, microprocessor, LCD display, keyboard and flash memory, the output terminal of described electronic filter is connected with the input end of microprocessor by A/D converter, and the different corresponding end of microprocessor LCD display, keyboard respectively are connected with flash memory.
An output terminal at described microprocessor is connected with the RS232 interface that is used for carrying out with host computer exchanges data.
Described mechanical filter is the thin metal pipe of 0.1 millimeter of a 20-100 millimeters long, internal diameter.
The utility model has the advantages that: utilize machinery-electronics associating filtering, can solve effectively because of the influence of wave in the water water level or tidal level measuring accuracy, mechanical filter of the present utility model has shortened original in the data presentation hysteresis (time lag was reduced to about 10 seconds from about 3 minutes) that mechanical filtering caused greatly, and the use of electronic filter eliminates the repercussions influence that mechanical filter brought again.Thereby reach water level or the tidal level of measuring the fluctuation water surface accurately and timely.The mechanical filter short circuit can also be fallen under given conditions, and only use electronic filter, can almost completely eliminate the time lag of measuring.
Description of drawings
Fig. 1 is the utility model general structure synoptic diagram;
Fig. 2 is the circuit block diagram of registering instrument of the present utility model and electronic filter;
Fig. 3 is the circuit theory diagrams of an embodiment of electronic filter of the present utility model.
Embodiment
Referring to Fig. 1, the utility model comprises: measure carrier gas feeding mechanism 1, air delivering pipeline 2, measuring cup 8, mechanical filter 3, pressure transducer 4, electronic filter 5 and registering instrument 6, measuring carrier gas is connected with the upper end and the measuring cup 8 of mechanical filter 3 by air delivering pipeline 7, the lower end air delivering pipeline of this mechanical filter 3 is connected with pressure transducer 4, the electric output terminal of this pressure transducer 4 connects with lead electronic filter 5, and the electric signal output of electronic filter 5 is connected with registering instrument 6 again.Measure carrier gas feedway 1 and contain gas cylinder, reduction valve, gas filter, pressure limiting valve, gas meter etc., be conventional equipment.Measure carrier gas and adopt nitrogen.
Referring to Fig. 2 and Fig. 3, described electronic filter 5 comprises low-pass filter amplifier A, intermediate amplifier C, alternating component amplifier D and the subtracter B that is used for the remaining height of filtering, intermediate wave, the output terminal of low-pass filter amplifier A is connected with the input end of alternating component amplifier D with intermediate amplifier C, the output terminal of intermediate amplifier C and alternating component amplifier D is connected with two input ends of subtracter B respectively, and the output terminal of subtracter B is connected with the input end of described registering instrument.Amplifier A is used for carrying out low-pass filtering the higher-order wave filtering, and at this moment signal is a low frequency, amplifies by amplifier C then, is subtracted each other by amplifier B with the AC signal of alternating component amplifier D amplification again, just can obtain removing the actual signal of alternating component.
Described registering instrument 6 comprises A/D converter, microprocessor MCU, LCD display, keyboard and FLASH storer, the output terminal of described electronic filter 5 is connected by the input end of A/D converter with microprocessor MCU, and the different corresponding end of microprocessor MCU are connected with LCD display, keyboard and flash memory respectively.
Also can be connected with the RS232 interface that is used for carrying out exchanges data at the output terminal of described microprocessor MCU with host computer.
Described electronic filter 5, at the registering instrument 6 that is used for functions such as the collection of measurement data, processing, storage, be provided with specially according to wave period and specific data acquiring frequency, thereby many measurement data are effectively handled, draw than accurate data.
In the ordinary course of things, adopt mechanical filter 3 and electronic filter 5 simultaneously, more effectively eliminate the influence of wave when only adopting mechanical filtering measuring accuracy.Very fast when SEA LEVEL VARIATION, and need control time lag to greatest extent and influence the time, can open the work that filtering valve 2 stops mechanical filter 3, only with electronic filter 5 filtering.Can eliminate wave has also guaranteed data acquisition fully to the influence of measuring accuracy promptness so basically.
The utility model is when work, change the position analog electrical signals through the level pressure signal that gather mechanical filter 3 backs by sensor 4, this signal is through electronic filtering, the AD conversion deposits computing machine in, can use keyboard in LCD, to show, also can carry out exchanges data by RS232 interface and host computer.
Claims (5)
1. the accurate air bubble type water level meter of machinery-electronics associating filtering, comprise and measure the carrier gas feeding mechanism, mechanical filter, pressure transducer, air delivering pipeline, measuring cup, electronic filter and registering instrument, the outlet of measuring the carrier gas feeding mechanism is connected with measuring cup with an end of mechanical filter by air delivering pipeline, the other end of this mechanical filter is connected with sensor, it is characterized in that: the electrical signal of described pressure transducer is connected by the input end of lead with an electronic filter, and the output terminal of this electronic filter is connected with the input end of described registering instrument by lead.
2. the accurate air bubble type water level meter of machinery according to claim 1-electronics associating filtering, it is characterized in that: described electronic filter comprises and is used for filtering through height that may be residual after the described mechanical filter filtering, the low-pass filter amplifier of intermediate wave (A), and intermediate amplifier (C), alternating component amplifier (D) and subtracter (B), the output terminal of low-pass filter amplifier (A) is connected with the input end of intermediate amplifier (C) with alternating component amplifier (D), the output terminal of intermediate amplifier (C) and alternating component amplifier (D) is connected with two input ends of subtracter (B) respectively, and the output terminal of subtracter (B) is connected with the input end of described registering instrument.
3. the accurate air bubble type water level meter of machinery according to claim 1 and 2-electronics associating filtering, it is characterized in that: described registering instrument comprises A/D converter, microprocessor, LCD display, keyboard and flash memory, the output terminal of described electronic filter is connected with the input end of microprocessor by A/D converter, and the different corresponding end of microprocessor connect LCD display, keyboard and flash memory respectively and are connected.
4. the accurate air bubble type water level meter of machinery according to claim 3-electronics associating filtering is characterized in that: an output terminal at described microprocessor is connected with the RS232 interface that is used for carrying out with host computer exchanges data.
5. the accurate air bubble type water level meter of machinery according to claim 1-electronics associating filtering is characterized in that: described mechanical filter is the thin metal pipe of 0.1 millimeter of a 20-100 millimeters long, internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201784702U CN201094064Y (en) | 2007-10-22 | 2007-10-22 | Mechanical-electronic combined filtering accurate air bubble type water gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201784702U CN201094064Y (en) | 2007-10-22 | 2007-10-22 | Mechanical-electronic combined filtering accurate air bubble type water gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201094064Y true CN201094064Y (en) | 2008-07-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201784702U Expired - Fee Related CN201094064Y (en) | 2007-10-22 | 2007-10-22 | Mechanical-electronic combined filtering accurate air bubble type water gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201094064Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586979B (en) * | 2009-07-10 | 2010-09-15 | 国网电力科学研究院 | Constant-flow bubble type automatic water level measurement method |
| CN106121633A (en) * | 2016-08-29 | 2016-11-16 | 北京六合伟业科技股份有限公司 | High temperature high precision water-level gauge for geothermal well monitoring system |
| CN106289633A (en) * | 2016-08-30 | 2017-01-04 | 中国长江电力股份有限公司 | A kind of Hydrology Telemetric System storage pressure remote supervision system |
-
2007
- 2007-10-22 CN CNU2007201784702U patent/CN201094064Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586979B (en) * | 2009-07-10 | 2010-09-15 | 国网电力科学研究院 | Constant-flow bubble type automatic water level measurement method |
| CN106121633A (en) * | 2016-08-29 | 2016-11-16 | 北京六合伟业科技股份有限公司 | High temperature high precision water-level gauge for geothermal well monitoring system |
| CN106289633A (en) * | 2016-08-30 | 2017-01-04 | 中国长江电力股份有限公司 | A kind of Hydrology Telemetric System storage pressure remote supervision system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080730 Termination date: 20151022 |
|
| EXPY | Termination of patent right or utility model |