CN2852049Y - Iron material thickness measurer - Google Patents
Iron material thickness measurer Download PDFInfo
- Publication number
- CN2852049Y CN2852049Y CN 200520046995 CN200520046995U CN2852049Y CN 2852049 Y CN2852049 Y CN 2852049Y CN 200520046995 CN200520046995 CN 200520046995 CN 200520046995 U CN200520046995 U CN 200520046995U CN 2852049 Y CN2852049 Y CN 2852049Y
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- CN
- China
- Prior art keywords
- hall element
- iron material
- circuit
- magnet
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model discloses a thickness tester for iron material, which is composed of a sensor, a testing circuit and a meter head, wherein the sensor comprises a magnet and a Hall element which are respectively embedded on two arms of a U-shaped iron core, and the testing circuit adopts a differential amplifying circuit. An output end of the Hall element is connected with an input end of the differential amplifying circuit, and the other input end of the differential amplifying circuit is connected to a zeroing resistance circuit. When the iron core is tightly attached to the surface of the measured iron material, and the magnetic lines of the magnet act on the hall element through the U-shaped iron core and the measured iron material. The magnet adopts a magnetic iron with strong magnetism so as to make the measured iron material achieve magnetic saturation, and the thickness of the magnet determines the amount of the magnetic lines that can pass. With the output voltage of the hall element, the thickness of the measured iron material can be indirectly tested.
Description
Technical field
The utility model relates to electronic device, is a kind of measuring instrument that is used to measure iron material thickness.
Background technology
At present, iron material thickness is mainly measured with utensils such as vernier calipers, milscale, need be stuck on two faces of material to measure.When measuring ironwork,,, can't measure with existing method owing to can't touch inside surface as goods such as iron flasks.In the manufacturing field, iron plate is through punching press or pull and stretch, and thickness changes, and need detect, and with proof strength, and have only at present product is destroyed, and just can measure.
Summary of the invention
The utility model purpose is to provide a kind of need to utilize face of goods, and just the iron material thicknessmeter that can measure its thickness uses with convenient.
Scheme of the present utility model is: the iron material thicknessmeter, form by sensor, testing circuit and gauge outfit, the output terminal of sensor is connected with the input end of testing circuit, gauge outfit is connected on the output terminal of testing circuit, sensor is that two arms at " U " shape iron core are embedded magnet and Hall element respectively, testing circuit adopts differential amplifier circuit, and the Hall element output terminal is connected with an input end of differential amplifier circuit, is connected with the zero-regulator resistor circuit on another input end of differential amplifier circuit.
Sensor outer housing is the irony shielding case, and its bead is equal with the end face of " U " shape iron core.
The utility model has the advantages that: owing to adopted two arms to be embedded with " U " shape iron core of magnet and Hall element respectively, when iron core is close to the measured material surface, the magnetic line of force of magnet acts on Hall element through " U " shape iron core, measured material, magnet adopts strong magnetic magnet, make measured material reach magnetic saturation, its thickness just determined the magnetic line of force that can pass through what, according to the output voltage of Hall element, can measure the thickness of measured material indirectly.Only measure and need carry out at the outside surface of ironwork, simple to operation.
Description of drawings
The utility model is described in further detail with embodiment with reference to the accompanying drawings below.
Fig. 1 is a circuit diagram of the present utility model.
Fig. 2 is the sensor construction synoptic diagram.
Embodiment
In conjunction with Fig. 1 and Fig. 2, the iron material thicknessmeter of embodiment is made up of sensor, testing circuit and gauge outfit.
Described sensor is that two arms at " U " shape iron core 3 are embedded magnet 4 and Hall element IC1 respectively.
Sensor outer housing 1 is the irony shielding case, and its bead is equal with the end face of " U " shape iron core 3, in order to conduct the peripheral magnetic line of force, to eliminate the measured deviation that varies in size and cause owing to tested iron material area.
Hall element IC1 adopts linear hall element UGN3503, and its output terminal 2 is drawn by going between, and is connected with the input end of testing circuit as the output terminal of sensor.
Testing circuit adopts the differential amplifier circuit that is made of operational amplifier IC2 and resistance R 3, R4, the output terminal of Hall element IC1 is connected with the input end of IC2, and another input end of IC2 is connected on the zero-regulator resistor circuit of being made up of variable resistor R1 and resistance R 2.
Gauge outfit G is connected on the output terminal of IC2, and wherein R5 is its dropping resistor.
Circuit of three-terminal voltage-stabilizing integrated IC3 and capacitor C1, C2 form mu balanced circuit, and cell voltage is stabilized in the normal working voltage of Hall element, are beneficial to guarantee measuring accuracy.
During work, the energized K switch is close to the measured material surface with sensor, because magnet 4 adopts strong magnetic magnet, makes measured material reach magnetic saturation, its thickness just determined the magnetic line of force that can pass through what, directly influence the output voltage of Hall element IC1.
The output voltage of Hall element IC1 amplifies through IC2, shows on gauge outfit G, engraves corresponding scale on gauge outfit, can measure the thickness of ironwork.
Owing to when not having measured material, certain magnetic field is arranged also on the Hall element IC1, have certain voltage output, the zero-regulator resistor circuit of forming by variable resistor R1 and resistance R 2 provides the current potential that equates with this voltage, eliminates its influence to measuring.
Claims (2)
1. iron material thicknessmeter, (G) forms by sensor, testing circuit and gauge outfit, the output terminal of sensor is connected with the input end of testing circuit, gauge outfit (G) is connected on the output terminal of testing circuit, it is characterized in that: sensor is that two arms at " U " shape iron core (3) are embedded magnet (4) and Hall element (IC1) respectively, testing circuit adopts differential amplifier circuit, Hall element (IC1) output terminal is connected with an input end of differential amplifier circuit, is connected with the zero-regulator resistor circuit on another input end of differential amplifier circuit.
2. iron material thicknessmeter as claimed in claim 1 is characterized in that: described sensor outer housing (1) is the irony shielding case, and its bead is equal with the end face of " U " shape iron core (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046995 CN2852049Y (en) | 2005-11-29 | 2005-11-29 | Iron material thickness measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046995 CN2852049Y (en) | 2005-11-29 | 2005-11-29 | Iron material thickness measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2852049Y true CN2852049Y (en) | 2006-12-27 |
Family
ID=37586008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520046995 Expired - Fee Related CN2852049Y (en) | 2005-11-29 | 2005-11-29 | Iron material thickness measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2852049Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697430A (en) * | 2015-03-25 | 2015-06-10 | 厦门大学 | Method and system for measuring steel plate thickness based on dynamic magnetic conductivity feature |
-
2005
- 2005-11-29 CN CN 200520046995 patent/CN2852049Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697430A (en) * | 2015-03-25 | 2015-06-10 | 厦门大学 | Method and system for measuring steel plate thickness based on dynamic magnetic conductivity feature |
| CN104697430B (en) * | 2015-03-25 | 2017-05-03 | 厦门大学 | Method and system for measuring steel plate thickness based on dynamic magnetic conductivity feature |
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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 |