CN201387313Y - Hall straight line displacement sensor - Google Patents
Hall straight line displacement sensor Download PDFInfo
- Publication number
- CN201387313Y CN201387313Y CN200920039941U CN200920039941U CN201387313Y CN 201387313 Y CN201387313 Y CN 201387313Y CN 200920039941 U CN200920039941 U CN 200920039941U CN 200920039941 U CN200920039941 U CN 200920039941U CN 201387313 Y CN201387313 Y CN 201387313Y
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- circuit
- hall
- signal
- displacement transducer
- linear displacement
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Abstract
The utility model discloses a Hall straight line displacement sensor which comprises a Hall integrated circuit. A Hall device, an amplifying circuit, a signal processing circuit and a subdivision circuit are arranged in the Hall integrated circuit; the output is two paths of signals, one path S1 is a subdivision pulse signal, the other path S2 is a counting direction pulse signal, and the straight line displacement of an execution mechanism can be obtained by calculating the pulse value. The Hall straight line displacement sensor has the advantages that: the volume is small, the structure is simple, and the sensitivity is high; the output voltage value presents linear changing; the straight line displacement of the mechanism in motion can be exactly measured; and the Hall straight line displacement sensor can be conveniently applied on various occasions of measuring the straight line displacement.
Description
Technical field
This practicality relates to novel a kind of contactless Hall integrated circuit linear displacement transducer that relates to, and particularly relates to a kind of magnetic inductive Hall straight line level sensor.
Background technology
The linear displacement transducer development rapidly, former use be to come the detection of straight lines displacement by pure physical construction, and the processing by electric signal now comes the detection of straight lines displacement, make on the structure and simplify greatly, the measuring accuracy height, stability strengthens, and higher to the measuring accuracy requirement of straight-line displacement now, particularly in automobile industry, the straight-line displacement measuring accuracy of clutch coupling is below 1mm, the existing multiple pattern of existing straight-line displacement: for example: photo-electric, differential pressure swing type, potentiometer formula, inductance type etc., photo-electric is contactless in these sensors, but cost height, potentiometer are contact, and resolution is low, the linearity is not high, exist and install, the environment that environment temperature is low and vibration is less uses down, and the shortcoming of inductance type is that frequency response own is low, unsuitable kinetic measurement fast realizes under applied environment harsh conditions such as automobile that particularly the measurement of straight-line displacement also needs some improvement.
The utility model content
The technical matters that the utility model mainly solves provides that a kind of inertia is little, and reaction velocity is fast, and is highly sensitive, linearity height, and simple in structure, cost is low, and is high temperature resistant, the linear displacement transducer of anti-vibration.
For solving the problems of the technologies described above, the scheme that the utility model adopts is: a kind of linear displacement transducer, comprise housing and the Hall integrated circuit that is built in the housing, Hall integrated circuit comprises hall sensor 1, signal processing circuit 5 and the sub-circuit 6 that connects in turn, described hall sensor 1 is made up of two hall sensing chips, the sine wave signal of its minute two-way output and cosine wave signal are after signal processing circuit 5 is handled, export sub-circuit 6 to, sub-circuit 6 output two-way square waves are as the output signal of whole Hall integrated circuit.
As the further improved technical scheme of the utility model, described sensing device also comprises a signal amplification circuit 4, described signal amplification circuit 4 is connected between hall sensor 1 and the signal processing circuit 5, described signal amplification circuit 4 comprises the two same signals amplifying circuit, one tunnel input end is connected with hall sensing chip 2, and output signal is sinusoidal wave SinA; One tunnel input end is connected with hall sensing chip 3, and output signal is cosine wave (CW) CosB.
As the further improved technical scheme of the utility model, described signal processing circuit is made up of the identical treatment circuit of two-way, treatment circuit is by high-pass filter, Schmidt trigger and triode are composed in series in proper order, the input end of two-way treatment circuit links to each other with two output terminals of signal amplification circuit 4 respectively, and the output terminal of two-way treatment circuit all is connected on the sub-circuit 6.The base stage of described triode connects Hi-pass filter, grounded emitter, and collector connects the signal subdivision device; Also be connected with capacitor C 2 and diode D3 between collector and the signal subdivision device, capacitor C 2 is connected between the collector and ground of triode, and the negative electrode of diode D3 connects the collector of triode, plus earth.Also be connected with capacitor C 1 between the output terminal of described Hi-pass filter and the ground.
As the further improved technical scheme of the utility model, also comprise a power protecting circuit 7, hall sensor 1, signal amplification circuit 4 and signal processing circuit 5 are all by power protecting circuit 7 external power supplys.Described power protecting circuit 7 comprises a diode D1 and a stabilivolt D2, and diode D1 just is being connected on the power supply, and the negative electrode of stabilivolt D2 is connected with the negative electrode of diode D1, the plus earth of stabilivolt D2.
As the further improved technical scheme of the utility model, described Hall integrated circuit is arranged on the circuit board 9, fills AB glue on the circuit board 9, and circuit board 9 is positioned in the housing 11 by round platform 10, and housing 11 is by 12 sealings of side's lid, and wire harness is drawn from sealing-plug 8.
The utility model adopts two Hall integrated circuits, and signal amplified and segment, each element even on circuit board, volume is little, simple in structure, highly sensitive, output voltage values is linear change, can measure the straight-line displacement of mechanism kinematic accurately, and be conveniently used in the occasion of various measurement straight-line displacements.
Description of drawings
Fig. 1 is the principle flow chart figure of the utility model linear displacement transducer
Fig. 2 is the fundamental diagram of the utility model linear displacement transducer
Fig. 3 is the cut-away view of the utility model linear displacement transducer
Fig. 4 is the utility model linear displacement transducer external structure
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described further.
Referring to Fig. 1 and Fig. 2, hall sensor 1 is linked in sequence with signal amplification circuit 4, signal processing circuit 5 and sub-circuit 6, two hall sensing chips 2 are arranged on the hall sensor 1,3, hall sensing chip 2 is output as sine wave signal SinA, hall sensing chip 3 is output as cosine wave signal CosB, and the phase phasic difference between two groups of signals is 90 degree.
Hall sensing chip 2,3 output terminal is in series with the input end of two same signals amplifying circuit respectively, this two same signals amplifying circuit is formed signal amplification circuit 4, two output terminals of signal amplification circuit 4 are exported sine wave signal SinA and the cosine wave signal CosB that has amplified certain multiple respectively, and with two input ends of two groups of signals as input signal difference input signal treatment circuit 5.
Two output terminals of signal processing circuit 5 link to each other with two input ends of sub-circuit 6 respectively, square-wave signal CHA and square-wave signal CHB are imported sub-circuit 6 as input signal, it is the chip of QA740204 that sub-circuit 6 can adopt model, sub-circuit 6 output two pulse signals, one the tunnel is that the skill rapid pulse is towards signal CH, one the tunnel is direction control signal FX, as the output signal of Hall integrated circuit, and in the computer or counter that the input of this signal is connected with sub-circuit.
Hall sensor 1, signal amplification circuit 4 and signal processing circuit 5 are all by power protecting circuit 7 external power supplys.Power protecting circuit 7 comprises a diode D1 and a stabilivolt D2, and diode D1 just is being connected on the power supply, and the negative electrode of stabilivolt D2 is connected with the negative electrode of diode D1, the plus earth of stabilivolt D2;
Referring to Fig. 3 and Fig. 4, Hall integrated circuit is arranged on the circuit board 9, fills AB glue on the circuit board 9, and circuit board 9 is positioned in the housing 11 by round platform 10, and housing 11 is by 12 sealings of side's lid, and wire harness is drawn from sealing-plug 8.
During measurement, install magnetic grid at the topworks place, when topworks moves, every through a N, the S utmost point, two hall sensing chips will respectively be exported a sinusoidal signal, and sinusoidal signal is amplified through 4 pairs of feeble signals of signal amplification circuit, and signal processing circuit 5 makes sine and cosine signal be converted to the stable square-wave signal of the phase differential that 90 degree should be arranged mutually.During half sine wave of the every output of hall sensing chip, signal processing circuit is then exported n pulsating wave, and therefore, during the input of one road square wave, output is 2n square-wave signal just, and n is a positive integer; When magnetic grid moves endways, high level will all appear, and then there is not the phase differential of 90 degree in the square-wave signal of signal processing circuit output this moment; Square-wave signal is through sub-circuit 6 output two-way pulses, one the tunnel is that the skill rapid pulse is towards signal CH, one the tunnel is direction control signal FX, the skill rapid pulse is towards the straight-line displacement of signal calculating place accurately topworks, direction control signal can be differentiated the motion state of returning of magnetic grid, two-way output all is connected on computer or the counter, obtains straight-line displacement by conversion.
Claims (11)
1, a kind of Hall linear displacement transducer, comprise housing and the Hall integrated circuit that is built in the housing, it is characterized in that Hall integrated circuit comprises hall sensor (1), signal processing circuit (5) and the sub-circuit (6) that connects in turn, described hall sensor (1) is by two hall sensing chip (1-1,1-2) form, the sine wave signal of its minute two-way output and cosine wave signal are after signal processing circuit (5) is handled, export sub-circuit (6) to, sub-circuit (6) output two-way square wave is as the output signal of whole Hall integrated circuit.
2, Hall linear displacement transducer according to claim 1 is characterized in that also comprising signal amplification circuit (4), and this circuit is connected between hall sensor (1) and the signal processing circuit (5).
3, as Hall linear displacement transducer as described in the claim 2, it is characterized in that signal amplification circuit (4) comprises the two same signals amplifying return circuit, one tunnel input end is connected with hall sensing chip (1-1), and output signal is sinusoidal wave; The input end on another road is connected with hall sensing chip (1-2), and output signal is a cosine wave (CW).
4, Hall linear displacement transducer according to claim 1 is characterized in that also comprising a power protecting circuit (7), hall sensor (1), and signal amplification circuit (4) and signal processing circuit (5) are all by power protecting circuit (7) external power supply.
5, as Hall linear displacement transducer as described in the claim 4; it is characterized in that power protecting circuit (7) comprises a diode D1 and a stabilivolt D2; diode D1 just is being connected on the power supply, and the negative electrode of stabilivolt D2 is connected with the negative electrode of diode D1, the plus earth of stabilivolt D2.
6, as linear displacement transducer as described in any one of the claim 1 to 5, it is characterized in that the sine wave signal of hall sensor (1) output and the phase phasic difference between the cosine wave signal are 90 degree.
7, as Hall linear displacement transducer as described in any one of the claim 1 to 5, it is characterized in that the two-way square wave of sub-circuit output is respectively sub-divided pulse signal and counting direction pulse signal.
8, as Hall linear displacement transducer as described in any one of the claim 1 to 5, it is characterized in that signal processing circuit is made up of the identical treatment loop of two-way, the two-way treatment loop is by high-pass filter, Schmidt trigger and triode are composed in series in proper order, and the input end of two-way treatment loop links to each other with two output terminals of signal amplification circuit (4) respectively, output terminal all is connected on the sub-circuit (6).
9, as Hall linear displacement transducer as described in the claim 8, it is characterized in that the base stage of described triode connects Hi-pass filter, grounded emitter, collector connects the signal subdivision device; Also be connected with capacitor C 2 and diode D3 between collector and the signal subdivision device, capacitor C 2 is connected between the collector and ground of triode, and the negative electrode of diode D3 connects the collector of triode, plus earth.
10, Hall linear displacement transducer as claimed in claim 8 is characterized in that also being connected with capacitor C 1 between the output terminal of described Hi-pass filter and the ground.
11, as any described Hall linear displacement transducer of claim 1 to 5, it is characterized in that described Hall integrated circuit is arranged on the circuit board (9), circuit board is filled AB glue on (9), circuit board (9) is positioned in the housing (11) by round platform (10), housing (11) is by side's lid (12) sealing, and wire harness is drawn from sealing-plug (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920039941U CN201387313Y (en) | 2009-04-22 | 2009-04-22 | Hall straight line displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920039941U CN201387313Y (en) | 2009-04-22 | 2009-04-22 | Hall straight line displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201387313Y true CN201387313Y (en) | 2010-01-20 |
Family
ID=41579848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920039941U Expired - Lifetime CN201387313Y (en) | 2009-04-22 | 2009-04-22 | Hall straight line displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201387313Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486332A (en) * | 2015-12-25 | 2016-04-13 | 约科布缪勒机械制造（中国）有限公司 | Narrow shuttleless loom counting measurement device |
| CN110654307A (en) * | 2019-09-18 | 2020-01-07 | 东风柳州汽车有限公司 | Brake lamp sensor |
| CN111412940A (en) * | 2020-05-08 | 2020-07-14 | 长春晟博光学技术开发有限公司 | Automatic debugging system and debugging method for subdivision chip of linear displacement sensor |
-
2009
- 2009-04-22 CN CN200920039941U patent/CN201387313Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486332A (en) * | 2015-12-25 | 2016-04-13 | 约科布缪勒机械制造（中国）有限公司 | Narrow shuttleless loom counting measurement device |
| CN110654307A (en) * | 2019-09-18 | 2020-01-07 | 东风柳州汽车有限公司 | Brake lamp sensor |
| CN111412940A (en) * | 2020-05-08 | 2020-07-14 | 长春晟博光学技术开发有限公司 | Automatic debugging system and debugging method for subdivision chip of linear displacement sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NANJING AOLIAN AUTOMOBILE ELECTRONICS + ELECTRICAL Free format text: FORMER NAME: NANJING AOLIAN AE + EA CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 211153 Nanjing Province, Jiangning District, the streets of the valley of the East Bridge Industrial Concentration Area Patentee after: NANJING AOLIAN AE & EA CO., LTD. Address before: 211153 Jiangsu city of Nanjing province Jiangning Development Zone General Road Mo Zhou Road No. 111 Patentee before: Nanjing Aolian AE & EA Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100120 |
|
| CX01 | Expiry of patent term |