CN103344306B - A kind of environmental protection WSN float liquid level pick-up unit and method - Google Patents
A kind of environmental protection WSN float liquid level pick-up unit and method Download PDFInfo
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- CN103344306B CN103344306B CN201310268062.6A CN201310268062A CN103344306B CN 103344306 B CN103344306 B CN 103344306B CN 201310268062 A CN201310268062 A CN 201310268062A CN 103344306 B CN103344306 B CN 103344306B
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Abstract
The present invention discloses a kind of environmental protection WSN float liquid level pick-up unit and method, and sliding rail rack is equipped with two sliding rails vertically downward, and barrier support centre of gravity place place is fixedly connected with wire rope lower end, and wire rope upper end connects coiling guide wheel vertically upward; Each right angle contacts pedestal lower end respectively establishes a liquid level contact, two liquid level contacts are vertically arranged up and down Face to face, the take off and landing strip of liquid level is moved spring generation elastic deformation, change the position of liquid level pointer, thus driving control system device produces different control operations, traction coiling guide wheel rotates and tightens up or loosen shackle line, until make the spring of generation deformation return to state of nature, final liquid level pointer is separated with sense contact; The displacement utilize the elastic deformation of spring to judge the fluctuation situation of monitoring liquid level, utilizing the umber of pulse of control step motor to carry out scale liquid position to change, adjustment is simple, transmission is accurate, have microminiaturization, the feature of intellectuality and non-stop run.
Description
Technical field
The present invention relates to level gauging field and field of Environment Protection, particularly relate to a kind of environmental protection WSN(wireless sensing) float liquid level pick-up unit and method, be widely used in the level measuring of the various media of the numerous areas such as chemical industry, medicine, Running-water Company, hydrometric station.
Background technology
Liquid level detection device is all generally be applied in bad environments, with serious pollution occasion, especially water level monitoring station, the accuracy of water level detecting value provides valuable reference value to the warning in flood season or decision-making, the central control room that particularly distance monitoring point is far away, the teletransmission effect requirements of signal is high, failure rate is low.Existing liquid level detection device generally fixes the wheel of two different-diameters on rope sheave, the wire rope on float and weight is wound around for opposite direction, equilibrant effect makes float keep floating on the surface, the eustasy of water level drives the change of float, the wirerope-winding of float or release under the effect of weight, drive rope sheave transmission shaft and change speed gear box to rotate thereupon, SEA LEVEL VARIATION is outputted to angle displacement scrambler with angle change, being transformed into electric signal is sent on signal processing circuit board, undertaken processing to obtain SEA LEVEL VARIATION data by microprocessor and arithmetical unit again.But the data of this liquid level detection device can only show in this locality, control terminal cannot be passed to; As long as the water surface slightly fluctuates under micro-wind action, the angle displacement scrambler of device will action, and antijamming capability is poor.
China Patent No. be 200910219683.9 patent documentation relate to a kind of float type level gauge of continuous remote transmission, comprise the guide rail of float, magnetic unitor, conduction or magnetic conduction conduction, magnetic axis or metal shaft are under magneticaction, along with moving up and down of float, move up and down along guide rail, obtain corresponding level value by the resistance value measured in the galvanic circle of guide rail, magnetic axis or metal shaft formation, detect data by wireless module teletransmission.But the resistance value of this float type level gauge is comparatively large by temperature variation, affects precision; Magnetic axis or metal shaft and guide rod are sliding friction, and friction force is large; May produce electric spark during slip, explosion-proof occasion can not be used.
Summary of the invention
The object of the invention is for overcoming various shortcoming that prior art exists with not enough, proposing a kind of structure is ingenious, antijamming capability is strong, measuring accuracy is high environmental protection WSN float liquid level pick-up unit and method, utilizing WSN to realize Monitoring Data and continuous remote transmission.
The technical scheme that environmental protection WSN float liquid level pick-up unit of the present invention adopts is; There is the support base plate of level and vertical sliding rail rack, sliding rail rack upper end is fixedly connected with support base plate bottom surface, on bracket bottom plate top surface, fixed placement has stepper motor, control system device and WSN remote communication module, stepper motor connects coiling guide wheel and control system device, control system device is by control signal wire electrical connection WSN remote communication module, and WSN remote communication module connects communication antenna; Sliding rail rack is equipped with two sliding rails vertically downward, each sliding rail is respectively established a slide rail wheel, the wheel shaft of level is connected between two slide rail wheels, wheel shaft is fixedly connected with inside barrier support, the centre of gravity place place of barrier support is fixedly connected with wire rope lower end, and wire rope upper end connects coiling guide wheel vertically upward; Two right angle contacts supports pass perpendicularly through hole c, the d on barrier support from top to bottom respectively and are fixedly connected on barrier support, and each right angle contacts pedestal lower end respectively establishes a liquid level contact, and two liquid level contacts e, f vertically arrange up and down Face to face; Two springs are cascaded, first spring upper end is fixedly connected with barrier support, first lower spring end connects second spring upper end, second lower spring end connects liquid level float, the liquid level pointer of the series connection place connection level of two springs, the indication end of liquid level pointer is between two liquid level contacts e, f, and two liquid level contacts e, f are by signal lines connection control system device.
The technical scheme that the detection method of environmental protection WSN float liquid level pick-up unit of the present invention adopts is following steps:
A, when liquid level declines, spring occurs to extend deformation, traction fluid bit pointer moves down, and liquid level pointer contacts with contact f, and control system device produces interrupt request singal by level sensing signal wire, control system device control step motor reversal, put down shackle line, barrier support moves down, until liquid level pointer with fall liquid level contact f and depart from, level sensing signal wire can produce an interrupt request singal again, and spring recovers natural drawing state; The number of drive pulses equivalence of stepper motor goes out the amount of moving down of liquid level, calculates current level value, by the teletransmission of WSN remote communication module;
B, when liquid level rises, spring generation compression set, traction fluid bit pointer moves up, and liquid level pointer contacts with contact e, and control system device produces interrupt request singal by level sensing signal wire, control system device control step motor rotates forward, upwards tighten up shackle line, barrier support moves up, until liquid level pointer with rise liquid level contact e and depart from, level sensing signal wire produces an interrupt request singal again, and spring is in natural drawing state; Stepper motor number of drive pulses equivalence go out liquid level on the amount of moving, calculate current level value, by the teletransmission of WSN remote communication module.
The present invention is compared with existing Method and Technology, and tool has the following advantages:
1, the present invention utilizes the elastic deformation of spring to judge the fluctuation situation of monitoring liquid level, and apparatus structure is flexible for installation, and transmission is accurate, has microminiaturization, intellectuality and non-stop run feature.
2, the present invention utilizes the step-by-step counting of stepper motor to carry out the displacement of scale liquid position change, can avoid the impact of disturbing factor on accuracy of detection at environmental monitoring scene.
3, the present invention can realize the wireless remote transmission of Monitoring Data, for Surveillance center's remote measuring and controlling provides advantage.
The guide wheel of the stepper motor traction 4, in the present invention can be convenient for changing according to working environment, is applicable to different workplaces.
Accompanying drawing explanation
Fig. 1 is the three-dimensional structure diagram of environmental protection WSN float liquid level pick-up unit of the present invention;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the installation vertical view of the amplification of barrier support 15 in Fig. 2;
Fig. 5 is the composition frame chart of control system device 4 in Fig. 1;
The sequence number of each parts and title in accompanying drawing: 1. stepper motor bearing; 2. stepper motor; 3. control signal wire; 4. control system device; 5. communication antenna; 6.WSN remote communication module; 7. support base plate; 8. triangular support bracket; 9. sliding rail rack; 10. right angle contacts support; 11. liquid level pointers; 12. sliding rails; 13. liquid level floats; 14. springs; 15. barrier supports; 16. signal lines; 17. shackle lines; 18. coiling guide wheels; 19. slide rail wheels; 20. wheel shafts.
Embodiment
See Fig. 1 ~ 4, support section of the present invention is made up of with vertical sliding rail rack 9 the support base plate 7 of level, sliding rail rack 9 is positioned at below support base plate 7, the upper end of sliding rail rack 9 is fixedly connected on the bottom surface of support base plate 7, be fixedly connected with triangular support bracket 8 between the upper end of sliding rail rack 9 and support base plate 7, to strengthen the stability of support section.Fixed placement stepper motor 2, control system device 4 and WSN remote communication module 6 on the end face of support base plate 7, stepper motor 2 is mechanically connected coiling guide wheel 18 by stepper motor bearing 1, stepper motor 2 is also electrically connected control system device 4 by control signal wire 3, control system device 4 is electrically connected in WSN remote communication module 6, WSN remote communication module 6 by control signal wire 3 and connects communication antenna 5.
Sliding rail rack 9 is equipped with two sliding rails 12 vertically downward from top to bottom, and on each sliding rail 12, each installation slide rail wheel 19, blocks slide rail wheel 19 by the notch of sliding rail 12, makes barrier support 15 can not depart from sliding rail rack 9.Two slide rail wheel 19 co-altitudes, between connect the wheel shaft 20 of level.The wheel shaft 20 of level is fixedly connected with inside barrier support 15, and adjustment ensures that barrier support 15 can freely without frictionally sliding up and down on vertical sliding rail 12.The middle centre of gravity place place of barrier support 15 is fixedly connected with the lower end of wire rope 17, and the upper end of wire rope 17 is connected in the wire casing of coiling guide wheel 18 vertically upward.Make barrier support 15 in level, and and sliding rail rack 9, wire rope 17 all perpendicular.
See Fig. 1,2,4, barrier support 15 having 4 holes, is hole a, b, c, d respectively, and 4 a, b, c, d ecto-entads are arranged, are positioned on the same straight line of center of gravity.Hole a is used for the upper end of fixing spring 14, and hole b, at the middle centre of gravity place of barrier support 15, is fixedly connected with the lower end of wire rope 17, and the spring 14 below make a concerted effort balance and the barrier support 15 of guarantee barrier support 15 in the raw.Hole c, d are respectively used to installation two right angle contacts supports 10, two right angle contacts supports 10 and are each passed through hole c, d.
Two springs 14 are had to be cascaded, the upper end passing hole a of first spring 14 is fixedly connected with barrier support 15, the lower end of first spring 14 connects the upper end of second spring 14, the lower end of second spring 14 connects liquid level float 13 by hook, and liquid level float 13 is freely hanging at the lower end of second spring 14 under gravity.Liquid level float 13 can be the baton round of high alloy steel ball or outer wall oiling conducting medium, or the spheroid made of other conductive materials or cylinder.At the junction connecting fluid bit pointer 11 of two springs 14, the change of instruction liquid level, liquid level pointer 11 is in level, and inner side is pointed in the indication end of liquid level pointer 11.
The lower end of two right angle contacts supports 10 fixes liquid level contact e, f respectively, and the liquid level contact upper and lower vertical plane of e, f is to arranging over the ground, and the indication end of liquid level pointer 11 is between two liquid level contacts e, f.According to the actual conditions of testing environment, the contact separation of adjustment hole c and hole d, adjusts to appropriate location and fixes, two of right angle contacts support 10 contacts e, f and liquid level pointer 11 are in same vertical plane.Two liquid level contacts e, f are connected to control system device 4 for touching liquid level pointer 11, two liquid level contacts e, f by signal lines 16, and the interruption as system controls pin.
See Fig. 5, comprise MCU control system in control system device 4, MCU control system connects Power supply power module, motor drive module, level sensing module, LCD MODULE, WSN wireless remote transmission driver module, liquid level warning module respectively.Power supply power module carries out Power convert, in control system device 4, each disparate modules provides required power supply, ensures that whole system can normally work.WSN wireless remote transmission driver module connects WSN remote communication module 6, and motor drive module connects stepper motor 2, according to the look-at-me that MCU control system produces, and the duty of adjustment stepper motor 2.When liquid level rises to a certain variable quantity, liquid level pointer 11 can with rise liquid contact e and contact, MCU control system generation look-at-me, Driving Stepping Motor 2 works, coiling guide wheel 18 rotary tightening shackle line 17, until rise to a certain position, liquid level pointer 11 with rise liquid contact e and be separated.Or when liquid level drops to a certain variable quantity, liquid level pointer 11 can with fall liquid contact f and contact, MCU control system generation look-at-me, Driving Stepping Motor 2 works, coiling guide wheel 18 rotates and loosens shackle line 17, until drop to a certain position, liquid level pointer 11 is separated with contact f.After fluid level condition is stable, MCU control system stops the work of stepper motor 2, and according to the working pulse number of stepper motor 2, calculates liquid level displacement.In conjunction with the liquid level initial value of setting when installing, draw the instantaneous value of liquid level, be presented on local liquid crystal display, and pass data to remote sensing station by WSN wireless remote transmission driver module.
See Fig. 1 ~ 5, principle of work of the present invention is according to mechanics principle, and two springs 14 can occur to extend or compression set under the effect having external force, and shackle line 17, under the effect of external force, unexpected deformation can not occur.The gravity of liquid level float 13 equals the buoyancy soaked in a liquid.The gravity of barrier support 15, spring 14, right angle contacts support 10, liquid level pointer 11 is born by shackle line 17.Generally, hang the spring 14 of liquid level float 13 in the raw, liquid level pointer 11 is positioned at the centre position of two liquid level contacts e, f.The Floater Structure be made up of spring 14, there is elastic deformation in the take off and landing strip of liquid level spring 14 of moving, change the position of liquid level pointer 11, thus driving control system device 4 produces different control operations.When detecting liquid level and changing up and down, cause spring 14 to occur within the specific limits to extend or compression set, thus drive the position of the liquid level pointer 11 be connected with spring 14 to move.The level sensing signal wire initial configuration of control system is high level, and when liquid level pointer contacts with liquid level contact e and f time, level sensing signal wire can be low level by high level saltus step, in control system, produce a look-at-me; And when liquid level pointer is separated with liquid level contact e and f time, level sensing signal wire can be high level by low transition again, in control system, produce a look-at-me.Control system according to different look-at-mes, thus can perform corresponding operation.Liquid level pointer 11 is with in the process of liquid fluctuating, can contact with induction level contact e, the f in instruction level fluctuation direction, in this case control system device 4 can produce look-at-me, drive motor controller produces pulse signal, instruction stepper motor 2 forward or reverse, traction coiling guide wheel 18 rotates and tightens up or loosen shackle line 17, until make the spring 14 of generation deformation return to state of nature, namely final liquid level pointer 11 is separated with sense contact e, f, and another look-at-me of control system device 4 detection generation is carried out Driving Stepping Motor 2 and quit work.Control system device 4, according to the pulse data of the stepper motor 2 of program record, changes into the displacement that guide wheel rotates the shackle line 17 produced, namely represents the variable quantity of liquid level.Again according to level value during system initialization, calculate real-time level value, show local liquid crystal display and teletransmission to monitoring station.About the basic parameter of control system device 4, when can be installed according to equipment by host computer monitoring system, independently arrange.
When liquid level declines, spring 14 can occur to extend deformation, traction fluid bit pointer 11 moves down, when reaching a certain displacement, liquid level pointer 11 with fall liquid level contact f and contact, the level sensing signal wire 16 of MCU control system is caused to produce interrupt request singal, what MCU control system judged liquid level pointer 11 moves down direction, motor drive module control step motor 2 reverses, put down shackle line 17, the total of guide baffle plate support 15 moves down, until liquid level pointer 11 with fall liquid level contact f and depart from, level sensing signal wire 16 can produce an interrupt request singal again, MCU control system judges that liquid level float 13 has reached a certain liquid level, be in equilibrium state, now spring 14 recovers natural drawing state.After system stability, go out the amount of moving down of liquid level according to the number of drive pulses equivalence of stepper motor 2, and calibration value when initialization is installed, calculate current level value.In real time at local liquid crystal screen display level value, and by the teletransmission of WSN wireless remote transmission driver module to monitoring station.
When liquid level rises suddenly, according to mechanics principle, can compression set be there is in spring 14, traction fluid bit pointer 11 moves up, when reaching a certain displacement, liquid level pointer 11 with rise liquid level contact e and contact, the level sensing signal wire 16 of MCU control system is caused to produce interrupt request singal, MCU control system judge liquid level pointer 11 on move direction, motor drive module control step motor 2 rotates forward, upwards tighten up shackle line 17, the total of guide baffle plate support 15 moves up, until liquid level pointer 11 with rise liquid level contact e and depart from, again produce an interrupt request singal, MCU control system instruction liquid level float 13 has reached a certain liquid level, spring 14 is in natural drawing state.After system stability, according to the equivalence of the number of drive pulses of stepper motor 2 go out liquid level on the amount of moving, and calibration value when initialization is installed, calculates current level value.In real time at local liquid crystal screen display level value, and by the teletransmission of WSN wireless remote transmission driver module to monitoring station.
Take into account the water surface under micro-wind action, there will be the lifting of water level or the unstable situation of fluctuation, the present invention limits to be only had when liquid level ascending amount or slippage are more than a limit value, namely just corresponding action can be performed with rising liquid level contact e or fall when liquid level contact f contacts, reduce the fluctuating error of water wave, ensure the stability of system.
Claims (4)
1. an environmental protection WSN float liquid level pick-up unit, it is characterized in that: there are the support base plate (7) of level and vertical sliding rail rack (9), sliding rail rack (9) upper end is fixedly connected with support base plate (7) bottom surface, on support base plate (7) end face, fixed placement has stepper motor (2), control system device (4) and WSN remote communication module (6), stepper motor (2) connects coiling guide wheel (18) and control system device (4), control system device (4) is by control signal wire (3) electrical connection WSN remote communication module (6), WSN remote communication module (6) connects communication antenna (5), sliding rail rack (9) is equipped with two sliding rails (12) vertically downward, each sliding rail (12) is respectively established a slide rail wheel (19), the wheel shaft (20) of level is connected between two slide rail wheels (19), wheel shaft (200) is fixedly connected with barrier support (15) inner side, the centre of gravity place place of barrier support (15) is fixedly connected with wire rope (17) lower end, and wire rope (17) upper end connects coiling guide wheel (18) vertically upward, two right angle contacts supports (10) pass perpendicularly through hole c, the d on barrier support (15) from top to bottom respectively and are fixedly connected on barrier support (15), a liquid level contact is respectively established in each right angle contacts support (10) lower end, and two liquid level contacts e, f vertically arrange up and down Face to face, two springs (14) are cascaded, first spring (14) upper end is fixedly connected with barrier support (15), first spring (14) lower end connects second spring (14) upper end, second spring (14) lower end connects liquid level float (13), the liquid level pointer (11) of the series connection place connection level of two springs (14), the indication end of liquid level pointer (11) is between two liquid level contacts e, f, and two liquid level contacts e, f are all by signal lines (16) connection control system device (4).
2. a kind of environmental protection WSN float liquid level pick-up unit according to claim 1, it is characterized in that: barrier support (15) has ecto-entad arrange and hole a, b, c, d of being positioned on the same straight line of center of gravity, a fixing spring (14) upper end, hole, hole b is fixedly connected with wire rope (17) lower end at the centre of gravity place of barrier support (15).
3. a kind of environmental protection WSN float liquid level pick-up unit according to claim 1, it is characterized in that: described control system device (4) comprises MCU control system, MCU control system connects Power supply power module, motor drive module, level sensing module, LCD MODULE, WSN wireless remote transmission driver module and liquid level warning module respectively, motor drive module connects stepper motor (2), and WSN wireless remote transmission driver module connects WSN remote communication module (6).
4. an environmental protection detection method for WSN float liquid level pick-up unit as claimed in claim 1, its feature has following steps:
A, when liquid level declines, spring (14) occurs to extend deformation traction fluid bit pointer (11) and moves down, liquid level pointer (11) contacts with contact f, control system device (4) produces interrupt request singal by level sensing signal wire (16), control system device (4) control step motor (2) reverses, put down shackle line (17), barrier support (15) moves down, until liquid level pointer (11) with fall liquid level contact f and depart from, level sensing signal wire (16) produces an interrupt request singal again, spring (14) recovers natural drawing state, the number of drive pulses equivalence of stepper motor (2) goes out the amount of moving down of liquid level, calculates current level value, by WSN remote communication module (6) teletransmission,
B, when liquid level rises, there is compression set in spring (14), traction fluid bit pointer (11) moves up, liquid level pointer (11) contacts with contact e, control system device (4) produces interrupt request singal by level sensing signal wire (16), control system device (4) control step motor (2) rotates forward, upwards tighten up shackle line (17), barrier support (15) moves up, until liquid level pointer (11) with rise liquid level contact e and depart from, level sensing signal wire (16) produces an interrupt request singal again, spring (14) is in natural drawing state, stepper motor (2) number of drive pulses equivalence go out liquid level on the amount of moving, calculate current level value, by WSN remote communication module (6) teletransmission.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310268062.6A CN103344306B (en) | 2013-07-01 | 2013-07-01 | A kind of environmental protection WSN float liquid level pick-up unit and method |
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| CN201310268062.6A CN103344306B (en) | 2013-07-01 | 2013-07-01 | A kind of environmental protection WSN float liquid level pick-up unit and method |
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| CN103344306B true CN103344306B (en) | 2015-09-02 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106482802B (en) * | 2016-12-26 | 2023-06-09 | 北京美科华仪科技有限公司 | Liquid evaporation amount detection device |
| CN107907186A (en) * | 2017-11-20 | 2018-04-13 | 南通海狮船舶机械有限公司 | Elastic force type liquid level gauge |
| CN108562461B (en) * | 2018-06-07 | 2023-07-11 | 中国农业科学院农业资源与农业区划研究所 | Automatic monitoring device and method for farmland soil leaching solution |
| CN113104692A (en) * | 2021-03-26 | 2021-07-13 | 广东亚太西奥电梯有限公司 | Waterproof safe elevator that soaks |
| CN114508493B (en) * | 2022-02-17 | 2024-03-12 | 湖南程微电力科技有限公司 | Intelligent drainage device with liquid level adjustment |
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