CN105136219A - Low power consumption floater flow sensor - Google Patents
Low power consumption floater flow sensor Download PDFInfo
- Publication number
- CN105136219A CN105136219A CN201510697953.2A CN201510697953A CN105136219A CN 105136219 A CN105136219 A CN 105136219A CN 201510697953 A CN201510697953 A CN 201510697953A CN 105136219 A CN105136219 A CN 105136219A
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- Prior art keywords
- float
- guide rod
- sensor
- grid
- floater
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- Level Indicators Using A Float (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a low power consumption floater flow sensor comprising a cone-shaped tube and a floater, wherein the floater is arranged in the cone-shaped tube; a gap is reserved between the floater and the cone-shape tube; a guide rod hole is formed in the floater and is internally provided with a guide rod; the inner wall of the guide rod hole is embedded with magnetic steel; a sensor mounting hole is formed in the guide rod and is internally provided with a capacitive grating position sensor; the capacitive grating position sensor comprises a movable grating and a fixed grating which are matched with each other; the movable grating is labelled with thin magnetic steel; the capacitive grating position sensor is connected with a signal conversion module; and the sensor mounting hole is internally provided with a temperature sensor which is connected with the signal conversion module. The low power consumption floater flow sensor can eliminate magnetic field interference, magnetic attenuation and influences brought by fluid and 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 because of good stability, moderate accuracy, price is low and be widely used in the industries such as oil, chemical industry, coal gas, tap water, building automatic.Current known float flow sensor primarily of for the float of flow detection and tapered tube, the magnet steel measured for float displacement to or the formation such as magnet steel and Hall element.Detected fluid from bottom to up through the annular space that tapered tube and float are formed, the upper and lower pressure differential of float formed to float to lifting force, when its buoyancy add thrust be greater than gravity time, float rises; In the process risen thereon, annular space area increases gradually, and the thrust be subject to upwards reduces gradually, and its buoyancy adds thrust when equaling gravity, and float just can be stabilized to a certain height.Float is equipped with magnet steel, and by changing the perception of its magnetic field intensity or signal with outside magnet steel or Hall element, the position of carrying out float is determined.
Suspended body flowmeter finds in actual applications, and due to the existence of the problem such as decay and outside magnetic interference of magnet steel magnetic intensity, its measuring accuracy can change with the change of external environment condition in time; Meanwhile, when signal converts, need magnetic field intensity information to be transformed into electric signal, circuit is more complicated, and power consumption is comparatively large, is difficult to be applied directly to low-power consumption, especially battery powered occasion.
Summary of the invention
For above-mentioned the deficiencies in the prior art, it is simple that the technical problem to be solved in the present invention is to provide a kind of structure, and the power consumption consumed when signal is changed is extremely low, is adapted at the float flow sensor that low-power consumption occasion uses.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of low-power float-flowrate sensor, comprise tapered tube and float, described float is positioned at described tapered tube, gap is provided with between described float and described tapered tube, described float is provided with a guide rod hole, a guide rod is provided with in described guide rod hole, the inwall of described guide rod hole is embedded with magnet steel, described guide rod is provided with a sensor mounting hole, an appearance grid position transducer is provided with in described sensor mounting hole, described appearance grid position transducer comprises the moving grid and fixed grid that cooperatively interact, described moving grid posts thin magnet steel, described appearance grid position transducer is connected with a signal conversion module, a temperature sensor is provided with in described sensor mounting hole, described temperature sensor is connected with described signal conversion module.
Described moving grid is connected with described fixed grid by draw runner.
Technique scheme has following beneficial effect: this low-power float-flowrate sensor utilizes the attractive force between float upper magnetic steel and capacitor grid transducer moving grid upper magnetic steel, the moving grid of capacitor grid transducer is made to follow the change in location of float, and keep relative position constant, just the height and position of float can be measured like this by capacitor grid transducer, and without the need to measuring the change of magnetic field intensity again, thus eliminate the impact of magnetic interference and magnetic decay, this non-contacting position measurement simultaneously, can eliminate the impact that 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, and therefore power consumption is very low and measuring accuracy is very high; Temperature sensor integrates by this low-power float-flowrate sensor simultaneously, is conducive to carrying out necessary temperature compensation to parameter.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As shown in Figure 1, low-power float-flowrate sensor comprises tapered tube 3 and float 2, float 2 is positioned at tapered tube 3, gap is provided with between float 2 and tapered tube 3, float 2 is provided with a guide rod hole 4, be provided with a guide rod 1 in guide rod hole 4, the inwall of guide rod hole 4 be embedded with magnet steel 7, float 2 can slide up and down along guide rod 1.Guide rod 1 is provided with a sensor mounting hole, is provided with an appearance grid position transducer and a temperature sensor in sensor mounting hole, holds grid position transducer and is connected with a signal conversion module 5.Hold grid position transducer and comprise the moving grid 8 and fixed grid 6 that cooperatively interact, moving grid 8 posts thin magnet steel, and 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.
In use, when detected fluid is from bottom to up through the gap that tapered tube 3 and float 2 are formed, float 2 rises this low-power float-flowrate sensor; Attractive force between moving grid 8 upper magnetic steel utilizing float 2 upper magnetic steel 7 and capacitor grid transducer, makes moving grid 8 follow the change in location of float 2, and keeps relative position constant.When interval area when between tapered tube 3 and float 2 increases gradually, the thrust that float 2 is subject to upwards reduces gradually, when its buoyancy add thrust equal gravity time, float 2 just can be stabilized to a certain height, and the capacitor grid transducer now consisted of moving grid 8 and fixed grid 6 just can measure the height and position of float 2.Signal outwards exports by capacitor grid transducer and temperature sensor signal modular converter 5.
This low-power float-flowrate sensor utilizes the attractive force between float upper magnetic steel and capacitor grid transducer moving grid upper magnetic steel, the moving grid of capacitor grid transducer is made to follow the change in location of float, and keep relative position constant, just the height and position of float can be measured like this by capacitor grid transducer, and without the need to measuring the change of magnetic field intensity again, thus eliminating the impact of magnetic interference and magnetic decay, this non-contacting position measurement simultaneously, can eliminate the impact that 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, and therefore power consumption is very low and measuring accuracy is very high; Temperature sensor integrates by this low-power float-flowrate sensor simultaneously, is conducive to carrying out necessary temperature compensation to parameter.
The technical characteristic described in detail is not had to be prior art in the application.Above-described embodiment is the principle of illustrative the application and effect thereof only, but not for limiting the application.Any person skilled in the art scholar all under the spirit and category of the application, can modify above-described embodiment or changes.Therefore, have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the application discloses, must be contained by the claim of the application.
Claims (2)
1. a low-power float-flowrate sensor, comprise tapered tube and float, described float is positioned at described tapered tube, gap is provided with between described float and described tapered tube, it is characterized in that: described float is provided with a guide rod hole, a guide rod is provided with in described guide rod hole, the inwall of described guide rod hole is embedded with magnet steel, described guide rod is provided with a sensor mounting hole, an appearance grid position transducer is provided with in described sensor mounting hole, described appearance grid position transducer comprises the moving grid and fixed grid that cooperatively interact, described moving grid posts thin magnet steel, described appearance grid position transducer is connected with a signal conversion module, a temperature sensor is provided with in described sensor mounting hole, described temperature sensor is connected with described signal conversion module.
2. low-power float-flowrate sensor according to claim 1, is characterized in that: described moving grid is connected with described fixed grid by draw runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510697953.2A CN105136219A (en) | 2015-10-25 | 2015-10-25 | Low power consumption floater flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510697953.2A CN105136219A (en) | 2015-10-25 | 2015-10-25 | Low power consumption floater flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105136219A true CN105136219A (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510697953.2A Pending CN105136219A (en) | 2015-10-25 | 2015-10-25 | Low power consumption floater flow sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN105136219A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397673A (en) * | 2020-04-15 | 2020-07-10 | 江苏鑫亚达仪表制造有限公司 | Novel flowmeter sensitive in reaction |
| CN114838228A (en) * | 2022-06-08 | 2022-08-02 | 西安热工研究院有限公司 | Machining method of smoke air duct measuring section and smoke air duct measuring section |
-
2015
- 2015-10-25 CN CN201510697953.2A patent/CN105136219A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397673A (en) * | 2020-04-15 | 2020-07-10 | 江苏鑫亚达仪表制造有限公司 | Novel flowmeter sensitive in reaction |
| CN114838228A (en) * | 2022-06-08 | 2022-08-02 | 西安热工研究院有限公司 | Machining method of smoke air duct measuring section and smoke air duct measuring section |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151209 |