CN2590009Y - Expandable magnetosensitive transducer array module - Google Patents
Expandable magnetosensitive transducer array module Download PDFInfo
- Publication number
- CN2590009Y CN2590009Y CN 02256137 CN02256137U CN2590009Y CN 2590009 Y CN2590009 Y CN 2590009Y CN 02256137 CN02256137 CN 02256137 CN 02256137 U CN02256137 U CN 02256137U CN 2590009 Y CN2590009 Y CN 2590009Y
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- China
- Prior art keywords
- array module
- utility
- model
- sensors
- magnetic sensitive
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- Expired - Fee Related
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Abstract
The utility model provides an expandable magnetic sensitive sensor array module. A plurality of Hall linear magnetic sensitive sensors can carry out the active connection so as to form the array and be manufactured into the module form. The gain compensation is led in the array module, and then, the utility model can make use of a potential suspension electric bridge and a gain regulating circuit to compensate the signal attenuation produced by the connection of a plurality of sensors, so that the measuring sensitivity on the unit area of the measuring area of the whole array module can reach or exceed the single Hall linear magnetic sensitive sensor. The number of the Hall linear magnetic sensitive sensors in display modules is freely expanded according to the requirement. The utility model has the advantages of simple structure and high expandability and universality. Moreover, the utility model is used for non-destructive detection industry and the magnetic detecting field.
Description
Technical field:
The utility model relates to the sensor that testing tool is used in Non-Destructive Testing and the magnetic detection range.
Background technology:
At long distance pipeline, in the continuous magnetic leakage detection of storage tank and main equipment, the magneto-dependent sensor that often needs big survey area, and the linear magneto-dependent sensor of the ear suddenly that uses now is because the measured zone area is too small, often that a plurality of sensors are placed side by side to increase survey area in order to satisfy the measurement needs, make that thus the number of sensors of using in the actual measurement process is too much, what have reaches hundreds of, because corresponding signal processing channel of each sensor, thereby cause the signal processing channel number too much, the data acquisition-and-recording amount is huge, the line complexity, and this has not only increased considerably system cost, and the complicacy of measuring system is increased, and reliability reduces.In order to overcome this defective, can carry out active connection to increase survey area with a plurality of sensors, but this can make the measurement sensitivity on the unit area descend significantly, be that cost is obtained bigger survey area promptly to sacrifice measurement sensitivity, this impels the signal processing channel of surveying instrument must carry out appropriate signals and amplifies and to recompense, but owing to will introduce stronger noise inevitably in the process of signal autobiography sensor arrival surveying instrument, thereby cause the signal to noise ratio (S/N ratio) of whole measuring system to descend significantly, when serious even can't detect.
Summary of the invention:
The purpose of this utility model is that a kind of expandable type Magnetosensitive sensor array module with big survey area will be provided.
The purpose of this utility model realizes in the following manner: the linear magneto-dependent sensors of a plurality of ears are suddenly carried out actively connecting to form array and making modular form, gain compensation is introduced in the array module, utilize electric potential floating electric bridge, gain adjustment circuit to compensate a plurality of sensors and connect the signal attenuation that produces, thereby make the measurement sensitivity on the whole array module measured zone unit area meet or exceed the linear magneto-dependent sensor of single ear suddenly, the linear magneto-dependent sensor number of the ear suddenly in the array module can expand arbitrarily as required.
Description of drawings:
Fig. 1 is the expandable type Magnetosensitive sensor array modular structure block diagram according to the utility model proposed.
Fig. 2 is the expandable type Magnetosensitive sensor array modular circuit schematic diagram according to the utility model proposed.
Among the figure, 1-is the linear magneto-dependent sensor of ear suddenly, the active totalizer of 2-, 3-electric potential floating electric bridge, 4-gain adjustment circuit, 5-output-stage circuit.
Describe concrete structure of the present utility model in detail below in conjunction with drawings and Examples.
Embodiment:
As shown in Figure 2, with several suddenly the linear magneto-dependent sensor of ear carry out active connection, on each sensor behind resistance of serial connection with operational amplifier IC
1Form active totalizer 2, be used for each undistorted converging of linear magneto-dependent sensor 1 output signal of ear suddenly, resistance R
1, R
2, R
3Form electric potential floating electric bridge 3, connect, be used to eliminate each influence of the linear magneto-dependent sensor quiescent output voltage of ear suddenly, be convenient to extract Dynamic Signal, resistance R with totalizer
4, R
5, R
6With operational amplifier IC
2Form gain adjustment circuit 4, be used to strengthen the Dynamic Signal amplitude, improve and measure sensitivity, resistance R
7Penetrate grade output stage 5 with triode T composition, be used to provide low-resistance output, to improve the anti-interference degree of signal transmission.Array is used the whole embedding of resin glue after making module, is convenient to on-the-spot the use.Because the measured zone area is the several times of general sensor, magnetic leakage detection system and the magnetic field detection equipment complexity formed with this magnetosensitive array module reduce, and reliability improves.The utility model is simple in structure, and expandability and highly versatile can be widely used in Non-Destructive Testing industry and magnetic detection range.
Claims (1)
- A kind of expandable type Magnetosensitive sensor array module, it is characterized in that the linear magneto-dependent sensors of a plurality of ears are suddenly carried out actively connecting to form array and making modular form, gain compensation is introduced in the array module, utilize electric potential floating electric bridge, gain adjustment circuit to compensate a plurality of sensors and connect the signal attenuation that produces, thereby make the measurement sensitivity on the whole array module measured zone unit area meet or exceed the linear magneto-dependent sensor of single ear suddenly
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02256137 CN2590009Y (en) | 2002-12-19 | 2002-12-19 | Expandable magnetosensitive transducer array module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02256137 CN2590009Y (en) | 2002-12-19 | 2002-12-19 | Expandable magnetosensitive transducer array module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2590009Y true CN2590009Y (en) | 2003-12-03 |
Family
ID=33724477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02256137 Expired - Fee Related CN2590009Y (en) | 2002-12-19 | 2002-12-19 | Expandable magnetosensitive transducer array module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2590009Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010043937A1 (en) * | 2008-10-13 | 2010-04-22 | National Taiwan University Of Science And Technology | Method and apparatus for current measurement using hall sensors without iron cores |
| CN106707013A (en) * | 2017-02-08 | 2017-05-24 | 深圳市硕亚科技有限公司 | Distributed low current detection system |
-
2002
- 2002-12-19 CN CN 02256137 patent/CN2590009Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010043937A1 (en) * | 2008-10-13 | 2010-04-22 | National Taiwan University Of Science And Technology | Method and apparatus for current measurement using hall sensors without iron cores |
| CN106707013A (en) * | 2017-02-08 | 2017-05-24 | 深圳市硕亚科技有限公司 | Distributed low current detection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |