CN102183275A - Low-power consumption float flow sensor - Google Patents
Low-power consumption float flow sensor Download PDFInfo
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- CN102183275A CN102183275A CN2011100238567A CN201110023856A CN102183275A CN 102183275 A CN102183275 A CN 102183275A CN 2011100238567 A CN2011100238567 A CN 2011100238567A CN 201110023856 A CN201110023856 A CN 201110023856A CN 102183275 A CN102183275 A CN 102183275A
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Abstract
The invention discloses a low-power consumption float flow sensor, which comprises a tapered pipe and a float. The float is positioned in the tapered pipe; an interval is reserved between the float and the tapered pipe; the float is provided with a guide rod hole; a guide rod is arranged in the guide rod hole; the inner wall of the guide rod hole is embedded with a magnetic steel; the guide rod is provided with a sensor mounting hole; a capacitive-gate position sensor is arranged in the sensor mounting hole; the capacitive-gate position sensor comprises a movable gate and a fixed gate matched with each other; and the thin magnetic steel is attached to the movable gate, and the capacitive-gate position sensor is connected with a signal conversion module. By the low-power consumption float flow sensor, the impact brought by the magnetic field interference, the magnetic attenuation and the fluid itself is eliminated, and the low-power consumption float flow sensor has the advantages of low power consumption and high measurement precision.
Description
Technical field
The present invention relates to the float flow sensor of a kind of detectable gas, fluid flow, especially at the float flow sensor of low-power consumption applications.
Background technology
Suspended body flowmeter is because of good stability, moderate accuracy, the low industries such as oil, chemical industry, coal gas, tap water, building automatic that are widely used in of price.Present known float flow sensor mainly by float that is used for flow detection and tapered tube, be used for magnet steel that float displacement measures to or magnet steel and Hall element etc. constitute.During annular space that detected fluid forms through tapered tube and float from bottom to up, float pressure differential up and down forms the upwards thrust to float, and when its buoyancy added thrust greater than gravity, float rose; In the process of Shenging, the annular space area increases gradually thereon, and the thrust that is subjected to upwards reduces gradually, and when its buoyancy added thrust and equals gravity, float just can be stabilized to a certain height.Magnet steel is housed on float,, carries out the position of float and determine by with outside magnet steel or Hall element perception or conversion of signals to its magnetic field intensity.
Suspended body flowmeter finds in actual applications, because the existence of problems such as the decay of magnet steel magnetic intensity and external magnetic interference, its measuring accuracy can be in time changes with the variation of external environment condition; Simultaneously, when signal transformation, need be with the magnetic field intensity information translation to electric signal, circuit is complicated, and power consumption is bigger, is difficult to be applied directly to low-power consumption, especially battery powered occasion.
Summary of the invention
At above-mentioned the deficiencies in the prior art, the technical problem to be solved in the present invention provides a kind of simple in structure, and power consumed is extremely low when conversion of signals, is adapted at the float flow sensor that the low-power consumption occasion is used.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of low-power consumption float flow sensor, comprise tapered tube and float, described float is positioned at described tapered tube, be provided with the gap between described float and the described tapered tube, described float is provided with a guide rod hole, be provided with a guide rod in the described guide rod hole, be embedded with magnet steel on the inwall of described guide rod hole, described guide rod is provided with a sensor mounting hole, be provided with one in the described sensor mounting hole and hold the grid position transducer, described appearance grid position transducer comprises moving grid and the fixed grid that cooperatively interacts, and posts thin magnet steel on the described moving grid, and described appearance grid position transducer is connected with a signal conversion module.
Preferably, described moving grid is connected with described fixed grid by draw runner.
Preferably, also be provided with a temperature sensor in the described sensor mounting hole, described temperature sensor is connected with described signal conversion module.
Technique scheme has following beneficial effect: this low-power consumption float flow sensor utilizes the attractive force between float upper magnetic steel and capacitor grid transducer moving grid upper magnetic steel, make the moving grid of capacitor grid transducer follow the change in location of float, and keep relative position constant, just can measure the height and position of float like this by capacitor grid transducer, and need not to measure again the variation of magnetic field intensity, thereby eliminated the influence of magnetic interference and magnetic decay, this non-contacting position measurement simultaneously, but the influence that eliminate fluid self brings; The displacement measurement precision of capacitor grid transducer can reach 0.01mm, and resolution reaches 0.001mm, and power consumption is lower than 60uW, so power consumption is very low and measuring accuracy is very high; This low-power consumption float flow sensor integrates temperature sensor simultaneously, helps parameter is carried out necessary temperature compensation.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described in detail.
As shown in Figure 1, the low-power consumption float flow sensor comprises tapered tube 3 and float 2, float 2 is positioned at tapered tube 3, be provided with the gap between float 2 and the tapered tube 3, float 2 is provided with a guide rod hole 4, be provided with a guide rod 1 in the guide rod hole 4, be embedded with magnet steel 7 on the inwall of guide rod hole 4, float 2 can slide up and down along guide rod 1.Guide rod 1 is provided with a sensor mounting hole, is provided with one in the sensor mounting hole and holds a grid position transducer and a temperature sensor, and appearance grid position transducer reaches and is connected with a signal conversion module 5.Hold the grid position transducer and comprise moving grid 8 and the fixed grid 6 that cooperatively interacts, post thin magnet steel on the moving grid 8, moving grid 8 is connected with fixed grid 6 by draw runner 9, and signal conversion module 5 is positioned at the upper end of fixed grid 6.
This low-power consumption float flow sensor in use, when gap that detected fluid forms through tapered tube 3 and float 2 from bottom to up, float 2 rises; Utilize the attractive force between moving grid 8 upper magnetic steels of float 2 upper magnetic steels 7 and capacitor grid transducer, make moving grid 8 follow the change in location of float 2, and keep relative position constant.When the interval area of 2 of tapered tube 3 and floats increases gradually, float 2 is subjected to thrust upwards and reduces gradually, when its buoyancy added thrust and equals gravity, float 2 just can be stabilized to a certain height, and the capacitor grid transducer of forming by moving grid 8 and fixed grid 6 this moment just can be measured the height and position of float 2.Capacitor grid transducer and temperature sensor signal modular converter 5 are outwards exported signal.
This low-power consumption float flow sensor utilizes the attractive force between float upper magnetic steel and capacitor grid transducer moving grid upper magnetic steel, make the moving grid of capacitor grid transducer follow the change in location of float, and keep relative position constant, just can measure the height and position of float like this by capacitor grid transducer, and need not to measure again the variation of magnetic field intensity, thereby eliminated the influence of magnetic interference and magnetic decay, this non-contacting position measurement simultaneously, but the influence that eliminate fluid self brings; The displacement measurement precision of capacitor grid transducer can reach 0.01mm, and resolution reaches 0.001mm, and power consumption is lower than 60uW, so power consumption is very low and measuring accuracy is very high; This low-power consumption float flow sensor integrates temperature sensor simultaneously, helps parameter is carried out necessary temperature compensation.
More than a kind of low-power consumption float flow sensor that the embodiment of the invention provided is described in detail; for one of ordinary skill in the art; thought according to the embodiment of the invention; part in specific embodiments and applications all can change; in sum; this description should not be construed as limitation of the present invention, and all any changes of making according to design philosophy of the present invention are all within protection scope of the present invention.
Claims (3)
1. low-power consumption float flow sensor, comprise tapered tube and float, described float is positioned at described tapered tube, be provided with the gap between described float and the described tapered tube, it is characterized in that: described float is provided with a guide rod hole, be provided with a guide rod in the described guide rod hole, be embedded with magnet steel on the inwall of described guide rod hole, described guide rod is provided with a sensor mounting hole, be provided with one in the described sensor mounting hole and hold the grid position transducer, described appearance grid position transducer comprises moving grid and the fixed grid that cooperatively interacts, and posts thin magnet steel on the described moving grid, and described appearance grid position transducer is connected with a signal conversion module.
2. low-power consumption float flow sensor according to claim 1 is characterized in that: described moving grid is connected with described fixed grid by draw runner.
3. low-power consumption float flow sensor according to claim 1 is characterized in that: also be provided with a temperature sensor in the described sensor mounting hole, described temperature sensor is connected with described signal conversion module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100238567A CN102183275A (en) | 2011-01-21 | 2011-01-21 | Low-power consumption float flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100238567A CN102183275A (en) | 2011-01-21 | 2011-01-21 | Low-power consumption float flow sensor |
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| Publication Number | Publication Date |
|---|---|
| CN102183275A true CN102183275A (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100238567A Pending CN102183275A (en) | 2011-01-21 | 2011-01-21 | Low-power consumption float flow sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680032A (en) * | 2012-05-25 | 2012-09-19 | 来卫国 | Magnetic displacement float flowmeter |
| CN107014455A (en) * | 2017-06-02 | 2017-08-04 | 浙江圣地物联科技有限公司 | A kind of quality formula flow internet of things sensors |
| CN108225978A (en) * | 2018-04-10 | 2018-06-29 | 东北农业大学 | Digitize liquid densimeter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2411464Y (en) * | 2000-04-04 | 2000-12-20 | 时代集团公司 | Micro-displacement measuring device |
| CN2765139Y (en) * | 2004-12-27 | 2006-03-15 | 杨忠义 | Double-post digital display height gauge |
| CN201060027Y (en) * | 2007-06-22 | 2008-05-14 | 株洲耀辉光机电研究开发有限公司 | Oil level, oil-water interface measurement mechanism |
| CN100485326C (en) * | 2005-11-18 | 2009-05-06 | 王永忠 | Wide-range float type flow sensor |
| CN201926470U (en) * | 2011-01-21 | 2011-08-10 | 苏州聚元微电子有限公司 | Low-power float-flowrate sensor |
-
2011
- 2011-01-21 CN CN2011100238567A patent/CN102183275A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2411464Y (en) * | 2000-04-04 | 2000-12-20 | 时代集团公司 | Micro-displacement measuring device |
| CN2765139Y (en) * | 2004-12-27 | 2006-03-15 | 杨忠义 | Double-post digital display height gauge |
| CN100485326C (en) * | 2005-11-18 | 2009-05-06 | 王永忠 | Wide-range float type flow sensor |
| CN201060027Y (en) * | 2007-06-22 | 2008-05-14 | 株洲耀辉光机电研究开发有限公司 | Oil level, oil-water interface measurement mechanism |
| CN201926470U (en) * | 2011-01-21 | 2011-08-10 | 苏州聚元微电子有限公司 | Low-power float-flowrate sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680032A (en) * | 2012-05-25 | 2012-09-19 | 来卫国 | Magnetic displacement float flowmeter |
| CN107014455A (en) * | 2017-06-02 | 2017-08-04 | 浙江圣地物联科技有限公司 | A kind of quality formula flow internet of things sensors |
| CN108225978A (en) * | 2018-04-10 | 2018-06-29 | 东北农业大学 | Digitize liquid densimeter |
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Application publication date: 20110914 |