CN201740550U - Intelligent flowmeter with magnetic sensor with giant Hall effect - Google Patents
Intelligent flowmeter with magnetic sensor with giant Hall effect Download PDFInfo
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- CN201740550U CN201740550U CN2010202364230U CN201020236423U CN201740550U CN 201740550 U CN201740550 U CN 201740550U CN 2010202364230 U CN2010202364230 U CN 2010202364230U CN 201020236423 U CN201020236423 U CN 201020236423U CN 201740550 U CN201740550 U CN 201740550U
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Abstract
The utility model provides an intelligent flowmeter with a magnetic sensor with giant Hall effect, which comprises a flowmeter shell, wherein the flowmeter shell is divided into a fluid passage and a flow sensor area by a protective layer; the fluid passage is internally provided with a bracket which is connected with the flowmeter shell; the bracket is provided with a rotary impeller; two ends of the rotary impeller are provided with a small magnet with N pole facing upwards and a small magnet with S pole facing upwards; and the flowmeter sensor area is provided with a flowmeter chip. The intelligent flowmeter has the advantages of slight power consumption, wide working frequency scope, wide working temperature scope, firm structure, small volume, long service life, convenient for installation, vibration resistance, clear output waveform, vibration resistance, high position repeating precision, simple electromagnetic shielding structure, reverse rotation preventing, error calculation preventing, and the like.
Description
Technical field
The utility model relates to a kind of flowmeter, the intelligent flow meter of the huge Hall effect of especially a kind of employing (GHE, Giant HallEffect) magnetic sensor.
Background technology
Usually flow meter signal is gathered selected sensor, mainly is tongue tube, semiconductor Hall element and Wei Gen sensor.
As the sensor-based system that extracts signal, when magnet during near the tongue tube reed, to can overcome the elastic force of reed the time, reed is with regard to the adhesive short circuit greatly for magnetic force by magnet and tongue tube; When magnet away from reed, attractive force during less than elastic force reed just separately, i.e. pulse is sent.That tongue tube has is easy to use, cheap, characteristics such as simple are installed.But as contact switch, it has again, and pulse waveform is poor, maintainability is poor, easily shake the contact, be subject to inherent shortcomings such as external magnetic field and vibrations (as water hammer) interference.
The semiconductor hall sensor that is applied in the intelligent flow meter mainly is a low-power consumption Hall switch integrated component, this sensor utilizes Hall effect, the conversion of realization magnetoelectricity, thereby the rotation of intelligent flow random encounter amount element can be converted into the cyclical variation in magnetic field, thereby the variation in magnetic field be converted into the output of high and low level.It has sound construction, volume is little, the life-span is long, easy for installation, power consumption is little, vibration resistance, output waveform are clear, non-jitter, positional repeatability advantages of higher.But consumption reduction principle from Hall element, Hall element for the tens of microwatts of power consumption, its response frequency is generally 20Hz～30Hz, and intelligent flow meter, particularly the rotational frequency of the elementary measuring element of intellectual water meter is generally 30Hz, therefore the low-power consumption Hall element generally is applied to the flow signal acquisition of secondary measuring element, and this has limited the range of application of Hall element in the intellectual water meter field, simultaneously the manufacturing process more complicated of hall device.
The principle of work of Wei root sensor is, bi-stable function alloy material in the sensor is under the excitation of alternation external magnetic field, direction of magnetization moment overturns, and after external magnetic field is withdrawn, its moment returns to original direction of magnetization, in the magnetic test coil around the alloy material, understand signal induced electricity thus, thereby realize the magnetoelectricity conversion.The maximum characteristics of this sensor are need not use additional power source (zero-power), do not have mechanical contact, shockproof influence etc., are applicable to little power consumption instrument.Its shortcoming is that output amplitude is low, has only about 1V, and pulsewidth also has only 30 several microseconds.Be unfavorable for the signal is far passed, can only be used for closely gathering, handling.
Unusual Hall effect is a kind ofly long ago just to find, but since in the common metal material anomalous Hall effect less and do not cause enough attentions.Recent years, the unusual Hall effect of discovery in the magnetic metal multilayer film was than high several magnitude in the common metal owing to the research of magnetoresistance effect.Thereby copy giant magnetoresistance effect and be called huge Hall effect.Because it is highly sensitive that the huge Hall effect in the magnetoresistance effect has, high-temperature stability, low-resistivity, manufacture craft is simple, the characteristics that high frequency response is good.Thereby can be used as the magnetic field device in the intelligent flow meter and improve the combination property of flowmeter.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of intelligent flow meter of employing huge Hall effect (GHE) magnetic sensor is provided, and can be applicable to the water yield, oil mass, gas, fields of measurement such as heat energy.
According to the technical scheme that the utility model provides, the intelligent flow meter of the huge Hall-effect magnetic of described employing comprises the flowmeter shell, and described flowmeter shell protected seam is divided into fluid passage and flowmeter sensor zone; Be provided with the support that is connected with the flowmeter shell in described fluid passage, on the described support rotary blade be installed, the rotary blade two ends are provided with N utmost point small magnet and S utmost point small magnet up up respectively;
Be provided with the flowmeter chip in described flowmeter sensor zone, described flowmeter chip comprises wireless and cable data transceiver module and the data presentation panel that is connected with the GHE sensor chip, described GHE sensor chip, wireless and cable data transceiver module and equal connected system of data presentation panel and power management module.
Be wrapped with magnetic shield at described GHE sensor chip, described magnetic shield is positioned at the flowmeter shell.
Described GHE sensor chip comprises two GHE devices, and the output of described two GHE devices connects the sensor-specific asic chip, connects miniature central processing unit and storage unit again.
On described protective seam, fix described GHE sensor chip, wireless and cable data transceiver module, data presentation panel, system and power management module.
Principle of work of the present utility model is: when measured fluid passes through, the rotation of fluid driven rotary impeller, thereby driving N utmost point small magnet and S utmost point small magnet up up rotates simultaneously, when N utmost point small magnet up passes through the GHE sensor chip, GHE sensor chip output high level, when S utmost point small magnet up passes through the GHE sensor chip, GHE sensor chip output low level.High-low level stores the flow meter data storage unit into after handling by miniature central processing unit, can show by the data presentation panel, also can carry out data transmission by wireless or cable data transceiver module.The function of system and power management module is to coordinate the whole GHE flow sensor systems of control and provide low power consumption control to system.
The utility model has the advantages that: power consumption is small, operating frequency range is wide, operating temperature range is wide, sound construction, volume is little, the life-span is long, easy for installation, vibration resistance, output waveform are clear, non-jitter, positional repeatability height, electromagnetic armouring structure is simple, anti-reversing erroneous calculations etc.
Description of drawings
Fig. 1 (a) is huge Hall effect (GHE) principle of work;
Fig. 1 (b) is the voltage output characteristics synoptic diagram of huge Hall effect;
Fig. 2 is a GHE flowmeter sensor circuit module synoptic diagram;
Fig. 3 is a GHE flowmeter structure synoptic diagram;
Fig. 4 is the signal output synoptic diagram of single GHE device;
Fig. 5 is the signal output synoptic diagram of flowmeter GHE device when just changeing;
The signal output synoptic diagram of GHE device when Fig. 6 is the flowmeter reversing.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
GHE magnetic field sensor principle of work and voltage output characteristics as shown in Figure 1.GHE magnetic field sensor, its material are magnetic multilayer film structure (material are X/CoPt, and X is Fe, Co, Ni).Sensor shape comprises current input terminal 13, output terminal 14 shown in Fig. 1 (a), electric current 15, and voltage output end 11,12, and perpendicular to the externally-applied magnetic field 16 of sensor.
The voltage output characteristics of GHE sensor is shown in Fig. 1 (b).When electric current 15 flows to current output terminal 14 by current input terminal 13, under magnetic field 16 effects that add perpendicular to sensor, at voltage output end 11 and 12 output Hall voltages.When sensor had steady current to pass through, the output voltage V=Vout (+) of huge Hall magnetic field sensor-Vout (-) was along with the direction of external magnetic field 16 changes with big or small change.When GHE working sensor during on off state, the externally-applied magnetic field direction is for just and greater than H2 the time, and the GHE sensor reaches capacity, and output high level 18; Outer magnetic field direction is for negative and during greater than H1, the GHE sensor reaches capacity and output low level 17.
As shown in Figure 2, the structure of GHE flowmeter chip comprises: the wireless and cable data transceiver module 215 and the data presentation panel 219 that are connected with GHE sensor chip 212, described GHE sensor chip 212, wireless and cable data transceiver module 215 and data presentation panel 219 equal connected system and power management modules 216.
Wherein GHE sensor chip 212 comprises: the output of two GHE device chips 217,218 connects sensor-specific chip (ASIC) 213, connects miniature central processing unit (MCU) and storage unit 214 again, and they are encapsulated in the same module.
As shown in Figure 3, the structure of GHE intelligent flow meter described in the utility model comprises: flowmeter shell 314,321, and flowmeter imports and exports 311 and 312, and flowmeter shell 314,321 inner protected seams 320 are divided into fluid passage and flowmeter sensor zone; Be provided with the support 315 that is connected with the flowmeter shell in described fluid passage, rotary blade 313 is installed on the described support 315, rotary blade 313 two ends are provided with N utmost point small magnet 317 and S utmost point small magnet 316 up up respectively; Be provided with described GHE flowmeter chip in the flowmeter sensor zone; The magnetic field 318 that N utmost point small magnet 317 up produces, the magnetic field 319 that S utmost point small magnet 316 up produces; Magnetic shield 322 is wrapped in GHE sensor chip 212.322 shieldings of magnetic shield external magnetic field does not hinder the field signal of GHE sensor chip 212 induction flowmeter internal magnets to the interference of GHE sensor chip 212.Described GHE sensor chip 212, wireless and cable data transceiver module and data presentation panel 215,219, system and power management module 216 are fixed on the protective seam 320 with flowmeter sensor and fluid isolation.
Principle of work of the present utility model is: import and export 311 as measured fluid by flowmeter, 312 when flowing through, 313 rotations of fluid driven rotary impeller, thereby driving N utmost point small magnet 317 and S utmost point small magnet 316 up up rotates simultaneously, when N utmost point small magnet 317 up passes through GHE sensor chips 212, the GHE sensor chip is sensed magnetic field 318 and is exported high level, when S utmost point small magnet 216 up passed through GHE sensor chips 212, the GHE sensor chip was sensed magnetic field 319 and output low level.The function of the protective seam 320 of isolating is to isolate detected fluid and sensor assembly and corresponding circuit.The interference of the extraneous magnetic of magnetic shield 322 shieldings.
The principle of work of GHE flowmeter sensor is: GHE chip 217,218 gather the flowmeter N utmost point small magnet up and the Magnetic Field of S utmost point small magnet generation up, and be delivered to sensor-specific chip ASIC 213 and carry out signal Processing, GHE chip 217 after the processing and 218 signal are as shown in Figure 4, when N utmost point small magnet 317 process GHE chips 217 and 218 up, signal is a high level, and when S utmost point small magnet 316 process GHE chips 217 and 218 up, signal is a low level.Because GHE chip 217 different with 218 position (shown in Figure 2), when flowmeter just changes, magnet is earlier through GHE chip 217, be GHE chip 218 then, so the signal that the signal of GHE chip 217 changes prior to GHE chip 218 changes, as shown in Figure 5, the signal of GHE chip 217 changes 511 signals 512 variations prior to GHE chip 218.When flowmeter reverses, magnet through GHE chip 218, is a GHE chip 217 earlier then, so the signal that the signal of GHE chip 218 changes prior to GHE chip 217 changes, as shown in Figure 6, the signal of GHE chip 218 changes 512 signals 511 variations prior to GHE chip 217.
Miniature central processor MCU and storage unit 214 after sensor-specific chip ASIC 213 acquisition process signal and further be processed into data on flows and storage.Data on flows can show by data presentation panel 219, also can outwards transmit by wireless and cable data transceiver module 215.The function of system and power management module 216 is to coordinate the whole GHE flow sensor systems of control and provide low power consumption control to system.
Claims (4)
1. adopt the intelligent flow meter of huge Hall-effect magnetic, it is characterized in that: comprise the flowmeter shell, described flowmeter shell protected seam is divided into fluid passage and flowmeter sensor zone; Be provided with the support that is connected with the flowmeter shell in described fluid passage, on the described support rotary blade be installed, the rotary blade two ends are provided with N utmost point small magnet and S utmost point small magnet up up respectively;
Be provided with the flowmeter chip in described flowmeter sensor zone, described flowmeter chip comprises wireless and cable data transceiver module and the data presentation panel that is connected with the GHE sensor chip, described GHE sensor chip, wireless and cable data transceiver module and equal connected system of data presentation panel and power management module.
2. flowmeter as claimed in claim 1 is characterized in that being wrapped with magnetic shield at described GHE sensor chip, and described magnetic shield is positioned at the flowmeter shell.
3. flowmeter as claimed in claim 1 is characterized in that described GHE sensor chip comprises two GHE devices, and the output of described two GHE devices connects the sensor-specific asic chip, connects miniature central processing unit and storage unit again.
4. flowmeter as claimed in claim 1 is characterized in that fixing described GHE sensor chip, wireless and cable data transceiver module, data presentation panel, system and power management module on described protective seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202364230U CN201740550U (en) | 2010-06-24 | 2010-06-24 | Intelligent flowmeter with magnetic sensor with giant Hall effect |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202364230U CN201740550U (en) | 2010-06-24 | 2010-06-24 | Intelligent flowmeter with magnetic sensor with giant Hall effect |
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| CN201740550U true CN201740550U (en) | 2011-02-09 |
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| CN2010202364230U Expired - Lifetime CN201740550U (en) | 2010-06-24 | 2010-06-24 | Intelligent flowmeter with magnetic sensor with giant Hall effect |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784025A (en) * | 2016-04-20 | 2016-07-20 | 镭蒙(宁波)股份有限公司 | Electronic water meter with improved structure |
| CN107247479A (en) * | 2012-08-08 | 2017-10-13 | 苹果公司 | Accessory device |
| CN107314782A (en) * | 2017-05-18 | 2017-11-03 | 重庆神缘智能科技有限公司 | A kind of Hall counting device |
| CN113049050A (en) * | 2019-12-10 | 2021-06-29 | 布莱克曼两合公司 | Flow meter with buffered power supply including electromagnetic sensor |
-
2010
- 2010-06-24 CN CN2010202364230U patent/CN201740550U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107247479A (en) * | 2012-08-08 | 2017-10-13 | 苹果公司 | Accessory device |
| CN107247479B (en) * | 2012-08-08 | 2020-11-10 | 苹果公司 | Accessory device |
| CN105784025A (en) * | 2016-04-20 | 2016-07-20 | 镭蒙(宁波)股份有限公司 | Electronic water meter with improved structure |
| CN105784025B (en) * | 2016-04-20 | 2022-12-02 | 镭蒙(宁波)股份有限公司 | Electronic water meter with improved structure |
| CN107314782A (en) * | 2017-05-18 | 2017-11-03 | 重庆神缘智能科技有限公司 | A kind of Hall counting device |
| CN113049050A (en) * | 2019-12-10 | 2021-06-29 | 布莱克曼两合公司 | Flow meter with buffered power supply including electromagnetic sensor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Duowei Technology Co., Ltd. Assignor: Wang Jianguo|Xue Songsheng Contract record no.: 2011990000352 Denomination of utility model: Intelligent flowmeter with magnetic sensor with giant Hall effect Granted publication date: 20110209 License type: Exclusive License Record date: 20110509 Assignee: Jiangsu Duowei Technology Co., Ltd. Assignor: Wang Jianguo|Xue Songsheng Contract record no.: 2011990000352 Denomination of utility model: Intelligent flowmeter with magnetic sensor with giant Hall effect Granted publication date: 20110209 License type: Exclusive License Record date: 20110509 |
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| CX01 | Expiry of patent term |
Granted publication date: 20110209 |
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| CX01 | Expiry of patent term |