CN204866851U - Magnetic induction belted steel position detector - Google Patents
Magnetic induction belted steel position detector Download PDFInfo
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- CN204866851U CN204866851U CN201420670387.7U CN201420670387U CN204866851U CN 204866851 U CN204866851 U CN 204866851U CN 201420670387 U CN201420670387 U CN 201420670387U CN 204866851 U CN204866851 U CN 204866851U
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model belongs to the technical field of the sensor, a magnetic induction belted steel position detector is disclosed, include: send the sensor, the orbit that produces the removal of magnetic field and perpendicular to belted steel sends, receiving sensor corresponds and receives send the magnetic field signal that the sensor sent to produce magnetism induced -current, the power amplification module behind the source signal filtering amplification with the signal, produces stable sinusoidal wave drive signal, the drive it produces magnetic field to send the sensor, the signal transmission module will send after the sinusoidal wave drive signal voltage amplification for it produces magnetic field to send the sensor, receiving module will receiving sensor's output signal changes standard current signal output into, wherein, send the coil of sensor and lay on PCB printed circuit board, the equidistant setting of coil. The utility model discloses a stable drive and receiving module produce stable magnetic field, through PCB printed circuit board close check loop construction, avoid the structural change, guarantee the stability of sensing structure.
Description
Technical field
The utility model relates to sensor technical field, particularly a kind of magnetic induction Strip position detection device.
Background technology
CPC (centerpositioncontrol)/EPC (edgepositioncontrol) is the abbreviation of band steel automatic centering/opposite side control system.CPC/EPC control system is had a style of one's own, for Continuous Closed ring type electro-hydraulic control system, when band departs from the position that production line specifies, measuring system measures strip location deviation, and deviate is input to electric-control system, the output of electric-control system is connected with Hydrauservo System, and hydraulic system drives correction executing mechanism to do corresponding movement, center (edge) position band being traveling in exactly adjust in advance.
Be provided with two symmetrical transmitting coils detecting framework top, framework is below to having two receiving coils, transmitting coil emitting electromagnetic wave, and receiving coil receives.Pass when not being with steel or be with steel from center through time, the magnetic line of force of two receiving terminal receptions is equal, induced potential is equal, but when steel band offsets, not etc., not etc., now comparator does not export a deviation signal to induced potential to the magnetic line of force that both sides receive yet, controller converts deviate to current value and outputs to actuating unit, and actuating unit action makes band steel get back to centre position.
Produce at belt metal material in the control procedure of rolling mill practice, the reliability and stability of magnetic induction Strip position detection device are key factors.Current inductance type transducer is generally formed by wire coiling, and uniformity and uniformity are all difficult to be guaranteed.Structural instability makes sensor reliability be deteriorated, resistance and the inductance value of coil are not of uniform size, pairing difficulty between sensor, particularly in use for some time, the density degree of coil changes, thus the characteristic of sensor is changed, and then the stability of effect string coil sensor and sensitivity, finally have a strong impact on the stability of system.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of coil promoting magnetic induction sensor induction structure stability and reliability, promotes the sensing arrangement of transducer sensitivity and reliability.
For solving the problems of the technologies described above, the utility model provides a kind of magnetic induction Strip position detection device, comprising:
Send sensor, produce magnetic field and track perpendicular to band steel movement sends;
Wherein, the coil of described transmission sensor is laid on PCB printed circuit board (PCB), coil spaced set.
Further, coil is all laid in described PCB printed circuit board (PCB) both sides, and the wiring direction of coil is contrary.
Further, the line pitch of described coil is 14mil.
The magnetic induction Strip position detection device that the utility model provides is by stable transmission and receive the stable transfer that structure ensures signal stream, thus ensures the stable of sensing detection process, promotes reliability; Solidify loop construction by printed circuit board (PCB), the change of the coil winding structure avoiding external environment to cause, and then the stability of hold-in winding structure, thus promote reliability and sensitivity.
Accompanying drawing explanation
The structural representation of the magnetic induction Strip position detection device that Fig. 1 provides for the utility model embodiment.
Detailed description of the invention
See Fig. 1, a kind of magnetic induction Strip position detection device that the utility model embodiment provides, comprising:
Send sensor, produce magnetic field and track perpendicular to band steel movement sends;
Receiving sensor, the corresponding field signal receiving transmission sensor and send, and produce induced field current;
Power amplifier module, after the source signal amplification filtering of signal, produces stable sine wave drive signal; Described transmission sensor is driven to produce magnetic field;
Signal transmitting module, sends sensor generation magnetic field by sending to after sine wave drive signal voltage amplification;
Receiver module, changes into standard current signal and exports by the output signal of receiving sensor;
Wherein, the coil sending sensor is laid on PCB printed circuit board (PCB), coil spaced set.
Coil is all laid in PCB printed circuit board (PCB) both sides, and the wiring direction of coil is contrary.
High-frequency magnetic induction position sensor is made by PCB printed circuit.When making PCB, tow sides are furnished with coil, and the number of turn of coil is total up to 100 circles, and spacing is 14mil, and which ensure that coil is equidistant, and density is even, eliminates the impact of human factor on sensor coiling precision.During sensor wiring, front wiring in the direction of the clock, and back wiring is by counterclockwise.By adopting this wire laying mode, when adding pumping signal to sensor, the magnetic field of the double-edged generation of cell winding is strengthened mutually, thus make receiving sensor produce stronger induced signal.
The signal generating circuit of power amplifying part is driven by single-chip microcomputer STC12C5620AD and sinusoidal wavely produces chip AD9850 to produce 40KHz sinusoidal wave, more after filtering after process, obtains that the distortion factor is little, the sine wave of frequency and amplitude stabilization.The signal alternate circuit of power amplifying part produces the square wave of certain frequency by LMC555 chip, then by the conducting of triode control DG418 switch chip and shutoff, switching frequency is set as 1KHz.Thus making the always road conducting of two-way sine wave signal, another road turns off, and decreases the interference between signal.TL082 chip makes it to be in rational working range to the amplification that two-way sine wave signal carries out certain multiple.The excitation amplifying circuit of power amplifying part, offset of sinusoidal ripple signal carries out 2 power amplifications by TDA2040.By isolation capacitance, AC signal is passed through, thus amplify AC power, dc power can not be amplified.First time carries out scale amplifying in the same way by chip offset of sinusoidal ripple, and second time carries out reverse scale amplifying by chip offset of sinusoidal ripple.The voltage difference of getting both signals, to emission sensor, produces large power signal and drives emission sensor.The power amplification circuit principle of another one emission sensor is identical.Two groups of emission sensor composition differential amplifier circuits.
Signal transmitting module, carries out 14 times of amplifications to transmission signal, then after capacitor filtering, send transmission sensor.
Signal receiving module, converts 4 ~ 20mA standard signal to the received signal successively to and exports after one-level operation amplifier, secondary second order Sallen-Key bandpass filtering, accurate full-wave rectification and the filtering of RC and π type.
The magnetic induction Strip position detection device that the utility model provides is by stable transmission and accept the stable transfer that structure ensures signal stream, thus ensures the stable of sensing detection process, promotes reliability; Solidify loop construction by printed circuit board (PCB), the change of the coil winding structure avoiding external environment to cause, and then the stability of hold-in winding structure, thus promote reliability and sensitivity.
It should be noted last that, above detailed description of the invention is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to example, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (3)
1. a magnetic induction Strip position detection device, is characterized in that, comprising:
Send sensor, produce magnetic field and track perpendicular to band steel movement sends;
Wherein, the coil of described transmission sensor is laid on PCB printed circuit board (PCB), coil spaced set.
2. magnetic induction Strip position detection device as claimed in claim 1, it is characterized in that, coil is all laid in described PCB printed circuit board (PCB) both sides, and the wiring direction of coil is contrary.
3. magnetic induction Strip position detection device as claimed in claim 2, is characterized in that: the line pitch of described coil is 14mil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670387.7U CN204866851U (en) | 2014-11-11 | 2014-11-11 | Magnetic induction belted steel position detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670387.7U CN204866851U (en) | 2014-11-11 | 2014-11-11 | Magnetic induction belted steel position detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204866851U true CN204866851U (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420670387.7U Active CN204866851U (en) | 2014-11-11 | 2014-11-11 | Magnetic induction belted steel position detector |
Country Status (1)
| Country | Link |
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| CN (1) | CN204866851U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117398118A (en) * | 2023-12-11 | 2024-01-16 | 上海奕瑞光电子科技股份有限公司 | Wireless positioning method, device, electronic product and medium of mobile DR |
-
2014
- 2014-11-11 CN CN201420670387.7U patent/CN204866851U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117398118A (en) * | 2023-12-11 | 2024-01-16 | 上海奕瑞光电子科技股份有限公司 | Wireless positioning method, device, electronic product and medium of mobile DR |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170713 Address after: 430080 Qingshan District stock company of Hubei, Wuhan Province Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Friendship Avenue, Hubei, Wuhan, No. 999 Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| TR01 | Transfer of patent right |