CN201069380Y - A water depth measurement device for step motor - Google Patents
A water depth measurement device for step motor Download PDFInfo
- Publication number
- CN201069380Y CN201069380Y CNU200720053329XU CN200720053329U CN201069380Y CN 201069380 Y CN201069380 Y CN 201069380Y CN U200720053329X U CNU200720053329X U CN U200720053329XU CN 200720053329 U CN200720053329 U CN 200720053329U CN 201069380 Y CN201069380 Y CN 201069380Y
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- stepper motor
- microprocessor
- electrically connected
- driver
- motor
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Abstract
The utility model discloses a stepping motor water depth measurement device, wherein two measuring electrodes (9) of the device are electrically connected with a pre-amplification circuit (23) via a twin-core electrode cable (11), the pre-amplification circuit (23); a motor driver (24) and a display driver (21) are electrically connected with a microprocessor (20) independently; the display driver (21) is also electrically connected with a display digitron (22); the output end of the motor driver (24) is connected with a stepping motor (4), the stepping motor (4) is connected with two measuring electrodes (9) via a rope pulley (2) arranged on the output shaft thereof and a wire cable (10) connected with the rope pulley (2). The device takes the advantage of stepping characteristics of the stepping motor, realizes the measurement of water or waterless conditions, being completely independent from the temperature and the humidity of surrounding environment, has the advantages of simple structure and high measurement accuracy, and is suitable for the field measurement in water conservancy and hydrology.
Description
Technical field
The utility model relates to the bathymetric survey device, and the Automatic Measurement Technique field is specifically related to a kind of stepper motor bathymetric survey device.
Background technology
At present, the method that sounds the depth of the water has several, as the diffuse si method of static pressure-resistance conversion, the ultrasonic method of liquid interface wave reflection-range conversion and the capacitive method of liquid medium dielectric coefficient-electric capacity conversion etc.Instrument product based on these principle methods has obtained to use widely at industrial circle.Yet at water conservancy industry, because measurement mechanism must place the field, and stands the baptism of heat, severe cold and wind and rain thunder and lightning, environment for use is very abominable.Ultrasonic method is temperature influence not only, and raindrop can make ultrasound wave produce scattering and reflections affect measurement when rainy; Capacitive method SEA LEVEL VARIATION influenced by ambient temperature and the hydrographic survey object is very big, thus these measuring methods in the hydrographic survey field several nothings use, widespread use at present be diffuse si pressure resistance type liquid level sensor.But the moisture-sensitive soft air influence in the open air of this surveying instrument when humidity strengthens, air dewfall and when being gradually accumulated in reference pressure chamber one end, can make measured value produce serious drift.In addition, its sealing property of water-immersed measuring sonde will degenerated under the pressure effect for a long time gradually, so life of product is greatly affected.
The utility model content
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, and a kind of stepper motor bathymetric survey device of measuring accurately, adapting to the harsh physical environment in field is provided.
The utility model purpose is achieved through the following technical solutions:
A kind of stepper motor bathymetric survey device, two potential electrode are electrically connected with the pre-amplification circuit that is connected by an end of twin-core electrode cable, pre-amplification circuit and microprocessor are electrically connected, microprocessor also is electrically connected with motor driver, display driver respectively, and display driver is electrically connected with the demonstration charactron; The motor driver output terminal links to each other with stepper motor, and stepper motor is connected with two potential electrode by the steel cable that is installed in the rope sheave on its output shaft and is connected with rope sheave.
For further realizing the purpose of this utility model, described microprocessor, display driver, demonstration charactron and stepper motor driver are arranged on the electric circuit board, and electric circuit board places the waterproof cabinet.
Described stepper motor is installed on the supporting plate by support plate, and supporting plate embeds in the concrete foundation.Described supporting plate is provided with the zero-bit switch, and the zero-bit switch links to each other with microprocessor after cushioning.Described two potential electrode are fixedly installed on the electrode outer cover.Described microprocessor is an AT89C2051 type chip microprocessor.
The utility model compared with prior art has following advantage and beneficial effect:
(1) the utility model has made full use of the step angle and the straight-line displacement characteristics linear apart from strictness of stepper motor stepping, mixes the stepping sub-driver circuit again, can reach very high measuring accuracy, and measuring principle is different from classic method.
(2) measuring sensor of the present utility model is a pair of ordinary electrode, does not need to resemble strict seal the diffuse si pressure resistance type liquid level sensor, is not subjected to the surrounding environment disturbing effect, can tolerate harsh field environment.
(3) measurement is stable does not drift about.Sensing electrode only need have been measured water and anhydrous two states, and it and environment temperature, humidity are irrelevant fully.
(4) safeguard that adjustment is very easy.Step motor, potential electrode, driving circuit and digital display partly are separately independently, therefore can adjust, safeguard or change that this greatly reduces the operation and maintenance cost of device to each independent sector respectively.
On the whole, the utility model has made full use of the stepping characteristics of stepper motor, mix the liquid level sensing electrode, only needing to measure has water and anhydrous two states, irrelevant fully with ambient temperature, humidity, simple in structure, then measurement can reach very high precision, is fit to water conservancy hydrology field survey environment.
Description of drawings
Fig. 1 is the utility model stepper motor bathymetric survey apparatus structure synoptic diagram.
Fig. 2 is an electric circuit board electrical schematic diagram among Fig. 1.
Fig. 3 is the microprocessor work program flow chart
Embodiment
In order to understand the utility model better, the utility model is done to describe further below in conjunction with drawings and Examples.
As shown in Figure 1, 2, stepper motor bathymetric survey device comprises stepper motor 4, rope sheave 2, zero-bit switch 3, potential electrode 9, electrode outer cover 8, steel cable 10, contact conductor cable 11, cabinet 12 and electric circuit board 13.Two potential electrode 9 are electrically connected by twin-core electrode cable 11 and pre-amplification circuit 23, pre-amplification circuit 23 is electrically connected with microprocessor 20, microprocessor 20 also is electrically connected with motor driver 24, display driver 21 respectively, and display driver 21 is electrically connected with demonstration charactron 22.Motor driver 24 output terminals link to each other with stepper motor 4, and stepper motor 4 is connected with two potential electrode 9 by the steel cable 10 that is installed in the rope sheave 2 on its output shaft and is connected with rope sheave 2, and potential electrode 9 stretches on 7 of the hydrology that must measure from top to bottom.Stepper motor 4 is installed on the supporting plate 1 by support plate 5, and supporting plate 1 embeds in the concrete foundation 6.Two potential electrode 9 are fixedly installed on the electrode outer cover 8.Supporting plate 1 is provided with zero-bit switch 3, as the usefulness of system's original point position, when electrode outer cover 8 touches zero-bit switch 3, promptly shows system's answer initial point.Zero-bit switch 3 links to each other with microprocessor (20) after cushioning.Microprocessor 20, display driver 21, demonstration charactron 22, stepper motor driver 24 are arranged on the electric circuit board 13, and electric circuit board 13 places waterproof cabinet 12.
Preposition amplification translation circuit 23 is made of the 4th～the 6th resistance R 4～R6, first, second triode Q1, Q2 and buffering not gate IC2:B.Two potential electrode 9 are connected with the 4th resistance R 4 with the first triode Q1 respectively, the 5th resistance R 5 one ends connect with the first triode Q1 base stage, other end ground connection, the first triode Q1 emitter is connected with the 3rd triode Q2 base stage, the collector of two triodes and Lian Houyu buffering not gate IC2:B connect, and buffering not gate IC2:B is connected with microprocessor 20; The collector of two triodes also is connected with the 6th resistance R 6, and the 4th, the 6th resistance R 4, R6 are connected with power supply respectively.Buffering not gate IC2:B model is 74HC14.Microprocessor (CPU) 20 is an AT89C2051 type chip microprocessor.And the 9th resistance R 9, the tenth resistance R 10, the 9th capacitor C the 9, the 1st～the 4th diode D1～D4 connect and compose.The termination stepper motor A phase winding of the first diode D1 and the second diode D2, other end ground connection.The termination stepper motor B phase winding of the 3rd diode D3 and the 4th diode D4, the other end is ground connection also.These four diodes are used for releasing the motor winding current with the power transistor among the protection two-phase stepper motor drive integrated circult IC3 when winding drives commutation, damage to avoid overtension.Two-phase stepper motor drive integrated circult IC3 model is TA8435, and the 9th resistance R 9, the tenth resistance R 10 are used for limiting the electric current in stepper motor 4 every phase windings, the chopping frequency of PWM among the capacitor C 9 decision two-phase stepper motor drive integrated circult IC3.Display driver 21 is made of three serial-to-parallel shift register IC4～IC6 and connected current-limiting resistance R11～R34.Serial-to-parallel shift register IC4～IC6 model is 74HC595, and they receive the serial code that microprocessor sends over, and then serial code are transformed into seven segment code and the line output that charactron can show.Digital demonstration 22 is total to the bright charactron DG1～DG3 in Yanggao County by three to be formed, and is responsible for showing bathymetric data.Zero-bit detects by zero-bit switch 3, first resistance R 1 and the 4th capacitor C 4, buffering output and buffering not gate IC2:F and constitutes, and when the electrode outer cover was pushed down zero-bit switch 3, the output of buffering not gate IC2:F produced variation from low to high.
As shown in Figure 3, during use, suppose that originally system is positioned at initial point, and the internal counter zero clearing.This moment, microprocessor 20 sent the rotation of command pulse drive stepping motor, and steel cable 10 and two potential electrode 9 move vertically downward simultaneously.Whenever all run-down electrode input signals of microprocessor make a move.If electrode does not touch water, then drive motor makes a move again, so repeats, up to the electrode contact water surface.After potential electrode is touched water, nearly 150 kilo-ohms of left and right sides resistance between two electrodes, there is this moment weak current to flow into the Q1 base stage through power supply, resistance R 4, electrode and water, after two triode Q1, the amplification of Q2 two-stage, triode Q2 promptly becomes conducting by ending, buffering not gate IC2:B output changes to high level by low level, and microprocessor monitors promptly stops the motor operation after this variation.Determine because the displacement equivalent of each step-by-step impulse is strict,, can try to achieve the depth of water immediately by the relevant altitude figures of hydraulic engineering again so can calculate the distance of initial point according to total step number to liquid level.
During application, select a two-phase or four phase step motor 4 earlier, 42BYGH41-556 type four phase step motor for example, process a rope sheave 2 and it is installed on the motor output shaft, select 10 1 of thin steel ropes again for use, its end is fixed on the rope sheave 1, and the other end links to each other with the electrode outer cover 8 of potential electrode 9.Make potential electrode 9 with stainless steel or copper product, make electrode outer cover 8 with the insulation material again, and potential electrode 9 is fixed in the electrode outer cover 8.One end of potential electrode 9 lead cables is linked to each other with two electrodes, and an other end links to each other with pre-amplification circuit 23 on the electric circuit board 13.Above the water surface to be measured, make a stepper motor fixed support plate 1 with angle steel or steel plate then, and stepper motor 4 installed and fixed put in place.The usefulness of a zero-bit switch 3 as system's original point position is installed on supporting plate,, promptly shows system's answer initial point when the electrode outer cover touches the trip switch.Design electric circuit board 13 by schematic diagram 2, the components and parts in pre-amplification circuit 23, stepper motor driving circuit 24, display driver 21 and demonstration charactron 22 each unit are installed on the printed circuit board.Electric circuit board is placed in the open-air waterproof cabinet 12 then, and carry out lightning protection.The debugging of microprocessor work program parallel machine is set.Water signal is sent to monitoring center with wireless or wired mode, for the usefulness of three anti-command centre scheduling and decision-making.The measurement mechanism of implementing to make according to said method has carried out the Continuous Tracking measurement to the reservoir level in 20 meters scopes, and the result shows this device working stability, and measuring accuracy can reach 8 ‰, and this is enough to satisfy water conservancy hydrologic monitoring needs.
The above only is the preferable possible embodiments of the utility model, is not so limits protection domain of the present utility model, so the equivalent structure that all application the utility model instructionss or accompanying drawing content are carried out changes, all is contained in the utility model protection domain.
Claims (6)
1. stepper motor bathymetric survey device, it is characterized in that, two potential electrode (9) of this device are electrically connected with the pre-amplification circuit that is connected (23) by an end of twin-core electrode cable (11), pre-amplification circuit (23) is electrically connected with microprocessor (20), microprocessor (20) also is electrically connected with motor driver (24), display driver (21) respectively, and display driver (21) is electrically connected with showing charactron (22); Motor driver (24) output terminal links to each other with stepper motor (4), and stepper motor (4) is connected with two potential electrode (9) by the steel cable (10) that is installed in the rope sheave (2) on its output shaft and be connected with rope sheave (2).
2. stepper motor bathymetric survey device according to claim 1, it is characterized in that described microprocessor (20), display driver (21), show that charactron (22), stepper motor driver (24) are arranged on the electric circuit board (13), electric circuit board (13) places waterproof cabinet (12).
3. stepper motor bathymetric survey device according to claim 1 is characterized in that described stepper motor (4) is installed on the supporting plate (1) by support plate (5), and supporting plate (1) embeds in the concrete foundation (6).
4. stepper motor bathymetric survey device according to claim 3 is characterized in that described supporting plate (1) is provided with zero-bit switch (3), and zero-bit switch (3) links to each other with microprocessor (20) after cushioning.
5. stepper motor bathymetric survey device according to claim 1 is characterized in that described two potential electrode (9) are fixedly installed on the electrode outer cover (8).
6. stepper motor bathymetric survey device according to claim 1 is characterized in that described microprocessor (20) is an AT89C2051 type chip microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720053329XU CN201069380Y (en) | 2007-06-26 | 2007-06-26 | A water depth measurement device for step motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720053329XU CN201069380Y (en) | 2007-06-26 | 2007-06-26 | A water depth measurement device for step motor |
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| Publication Number | Publication Date |
|---|---|
| CN201069380Y true CN201069380Y (en) | 2008-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU200720053329XU Expired - Fee Related CN201069380Y (en) | 2007-06-26 | 2007-06-26 | A water depth measurement device for step motor |
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| CN (1) | CN201069380Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425515A (en) * | 2011-12-20 | 2012-04-25 | 西安天厚滤清技术有限责任公司 | Double-barrel parallel connection type fully transparent oil purification device with electronic water level sensing function |
| CN102564526A (en) * | 2011-12-20 | 2012-07-11 | 西安天厚滤清技术有限责任公司 | Water level sensor circuit and water level sensor |
| CN103278209A (en) * | 2013-06-08 | 2013-09-04 | 山西电力职业技术学院 | Method for automatic detection and tracking of water level |
| CN103644898A (en) * | 2013-12-05 | 2014-03-19 | 长江水利委员会长江科学院 | Water boundary recognition measurement system for river model test and water boundary recognition measurement method |
| CN103776509A (en) * | 2012-10-25 | 2014-05-07 | 昆达电脑科技(昆山)有限公司 | Liquid-level display device in automobile engine cabin |
| CN105129044A (en) * | 2015-09-28 | 2015-12-09 | 北京华夏力鸿商品检验有限公司 | Water absorption detector and using method thereof |
| CN106382968A (en) * | 2016-11-11 | 2017-02-08 | 中国矿业大学(北京) | Real-time tracking and measuring device for underground water level |
| CN110440869A (en) * | 2019-08-13 | 2019-11-12 | 刘琳 | A kind of water-level detecting device and method of water project management |
-
2007
- 2007-06-26 CN CNU200720053329XU patent/CN201069380Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564526A (en) * | 2011-12-20 | 2012-07-11 | 西安天厚滤清技术有限责任公司 | Water level sensor circuit and water level sensor |
| CN102425515A (en) * | 2011-12-20 | 2012-04-25 | 西安天厚滤清技术有限责任公司 | Double-barrel parallel connection type fully transparent oil purification device with electronic water level sensing function |
| CN102425515B (en) * | 2011-12-20 | 2014-05-28 | 西安天厚滤清技术有限责任公司 | Double-barrel parallel connection type fully transparent oil purification device with electronic water level sensing function |
| CN103776509A (en) * | 2012-10-25 | 2014-05-07 | 昆达电脑科技(昆山)有限公司 | Liquid-level display device in automobile engine cabin |
| CN103278209B (en) * | 2013-06-08 | 2015-08-12 | 山西电力职业技术学院 | A kind of method of automatic detecting and tracking water level |
| CN103278209A (en) * | 2013-06-08 | 2013-09-04 | 山西电力职业技术学院 | Method for automatic detection and tracking of water level |
| CN103644898A (en) * | 2013-12-05 | 2014-03-19 | 长江水利委员会长江科学院 | Water boundary recognition measurement system for river model test and water boundary recognition measurement method |
| CN103644898B (en) * | 2013-12-05 | 2015-10-28 | 长江水利委员会长江科学院 | River model test water boundaries identification measuring method |
| CN105129044A (en) * | 2015-09-28 | 2015-12-09 | 北京华夏力鸿商品检验有限公司 | Water absorption detector and using method thereof |
| CN105129044B (en) * | 2015-09-28 | 2018-06-29 | 北京华夏力鸿商品检验有限公司 | Device and its application method are checked in a kind of water suction |
| CN106382968A (en) * | 2016-11-11 | 2017-02-08 | 中国矿业大学(北京) | Real-time tracking and measuring device for underground water level |
| CN106382968B (en) * | 2016-11-11 | 2018-01-26 | 中国矿业大学(北京) | Level of ground water real-time follow-up device |
| CN110440869A (en) * | 2019-08-13 | 2019-11-12 | 刘琳 | A kind of water-level detecting device and method of water project management |
| CN110440869B (en) * | 2019-08-13 | 2020-11-10 | 刘琳 | Water level detection device and method for hydraulic engineering management |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20080604 Termination date: 20110626 |