CN102200426A - Hall encoder-based travel sensor and travel measurement method thereof - Google Patents
Hall encoder-based travel sensor and travel measurement method thereof Download PDFInfo
- Publication number
- CN102200426A CN102200426A CN 201110070437 CN201110070437A CN102200426A CN 102200426 A CN102200426 A CN 102200426A CN 201110070437 CN201110070437 CN 201110070437 CN 201110070437 A CN201110070437 A CN 201110070437A CN 102200426 A CN102200426 A CN 102200426A
- Authority
- CN
- China
- Prior art keywords
- hall circuit
- hall
- circuit
- sub
- chip microcomputer
- 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.)
- Granted
Links
Images
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The invention discloses a Hall encoder-based travel sensor. The travel sensor comprises a metal tube made of nonmagnetic metal materials. A magnet ring that matches with the outer diameter of the metal tube is arranged on the metal tube in a sleeved mode. Multiple Hall circuit arrays are arranged inside the metal tube and connected with the main SCM (single-chip microcomputer) by means of each sub-SCM. The output terminal of the main SCM is connected with an operational magnification circuit which is connected with an outer lead wire. In addition, the invention also discloses a method which utilizes the Hall encoder-based travel sensor to measure the travel distance. The invention has the advantages of good security, high reliability and high resolution ratio, and low power consumption., the resolution ratio achieved by the invention is as high as 3 mm, much better than the prior reed switch, thereby largely improving the position resolution ratio. Taking the travel of 192 mm as an example, the overall consumption is less than or equal to 7mA. Moreover, the invention is intelligent so as to be capable of automatic correcting and dual-directional transmission of signals, which facilitates the intelligent management in the detection field.
Description
Technical field
The present invention relates to a kind of stroke sensor, be a kind of stroke sensor that is used for position probing specifically, and use the trip sensor to carry out the method for stroke measurment based on the Hall circuit coding.
Background technology
The tradition stroke sensor adopts the tongue tube electric resistance partial pressure type more, obtains different magnitudes of voltage and judges the position by triggering different tongue tubes.But tongue tube is frangible in vibration environment, and switch is easily shaken, and easily adhesive after long-term the use causes whole stroke sensor to be scrapped.And adopt the stroke sensor output prograin of tongue tube relatively poor relatively and unadjustable, because the tongue tube volume is big, packing density can't be very high, so stroke sensor resolution is also relatively poor.
Summary of the invention
Goal of the invention: the present invention is exactly at above-mentioned deficiency, and a kind of stroke sensor based on the Hall circuit coding is provided, and solves the problem that existing stroke sensor precision is low, serviceable life is short.
Another object of the present invention is to provide uses above-mentioned stroke sensor based on the Hall circuit coding to carry out the method for stroke measurment.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
A kind of stroke sensor based on the Hall circuit coding comprises the metal tube that nonmagnetic material is made, and is arranged with on metal tube and the suitable magnet ring of metal tube external diameter; Be provided with some Hall circuit arrays in metal tube, the Hall circuit array links to each other with host scm by each sub-single-chip microcomputer respectively, and the output terminal of host scm is connected with operational amplification circuit, and operational amplification circuit links to each other with outer lead.
Wherein, be provided with in metal tube and metal tube internal diameter, the adaptive double-clad board of length, the Hall circuit array is installed on the double-clad board, and each sub-single-chip microcomputer, host scm and operational amplification circuit are arranged on the another side of double-clad board.
Wherein, described Hall circuit array by the little power consumption figures Hall circuit of some SMD AH3661 along the metal tube axis direction be divided into two row staggered on double-clad board.
Wherein, described magnet ring is the ferrite bead of axial charging; The magnetic induction density of described magnet ring can trigger a continuous n Hall circuit and be in conducting state, and other Hall circuits then are in cut-off state; N 〉=3 wherein.
Wherein, the encapsulant sealing is adopted in the end of described metal tube.
The stroke sensor that use is encoded based on Hall circuit carries out the method for stroke measurment, and it comprises the steps:
(1) after the energising, the initialization respectively of host scm and sub-single-chip microcomputer, host scm waits for that sub-single-chip microcomputer finishes information acquisition, host scm is prepared the communication register of the sub-single-chip microcomputer of scanning;
(2) sub-single-chip microcomputer is gathered the information of each Hall circuit:
Sub-single-chip microcomputer is inquired about the record whether the inefficacy Hall circuit is arranged in its storer, if having, then it is rejected outside the scope of scanning; If do not have, then sub-single-chip microcomputer is inquired about each Hall circuit work at present state, sends into the communication register of sub-single-chip microcomputer after encoding, and waits for host query;
(3) host scm scans the communication register internal information of sub-single-chip microcomputer, gathers Hall circuit work at present state;
(4) host scm carries out overall treatment to the data that collect:
Set magnet ring and trigger a continuous n Hall circuit simultaneously:
Set when the above Hall circuit conducting of m or m is wherein arranged, judge that then magnet ring moves to the centre position of n Hall circuit, it is changed into travel information after calculating current magnet ring position, send into the signal operation amplifying circuit;
If find to have the Hall circuit of inefficacy, then this Hall circuit corresponding codes information is sent in the storer of corresponding sub-single-chip microcomputer;
Wherein n 〉=3, and n 〉=m 〉=2, n, m are integer;
(5) signal is finished a signal output after amplifying.
(6) repeat 2～4 steps, keep the communication register data in real time of sub-single-chip microcomputer to upgrade;
Wherein, in the step (2), sub-single-chip microcomputer is according to the information of the single Hall circuit that inquires, its state is divided into conducting and ends, conducting state output low level, corresponding codes are 0, cut-off state output high level, corresponding codes is 1, and sub-single-chip microcomputer is input to its communication register with each Hall circuit corresponding codes and preserves.
Wherein, when judging the Hall circuit that lost efficacy in the step (4), if find to have only 1 Hall circuit output low level in the continuous n Hall circuit, judge that then this Hall circuit is the inefficacy circuit, host scm is returned storer to sub-single-chip microcomputer with the information of this Hall circuit correspondence; N 〉=3 wherein.
Hall circuit is as the induction element of magnet ring position (travel position just), Redundancy Design is adopted in configuration between Hall circuit and the magnet ring, require magnet ring to be designed to suitable size, to guarantee when magnet ring is positioned at a certain position, can trigger and be in conducting state, output low level simultaneously corresponding near a plurality of continuously the magnet ring (for example 3) Hall circuit; And all the other all Hall circuits all are in cut-off state, the output high level.
Principle of work of the present invention: because all Hall circuit homogeneous lines are arranged, the duty of each Hall circuit and the position of magnet ring are presenting corresponding relation.When magnet ring rested on a certain position with moving component, near Hall circuit was triggered, and is in conducting state, output low level, and other Hall circuits then are in cut-off state, the output high level.Like this, gather and analyzed the level signal of each Hall circuit in the Hall circuit array, can judge the position of magnet ring.And the magnet ring position is connected with stroke motion parts to be measured, and therefore, there are unique corresponding relation in Hall circuit level signal and travel position.Utilize single-chip microcomputer that Hall circuit is scanned and encode, search the level signal of Hall circuit, can realize active detecting stroke.
Beneficial effect:
(1) safe: Hall circuit is a kind of contactless electronic beam switch, does not have machinery wearing and tearing, no electric spark, and the life-span is long, and is safe and reliable, is particularly suitable for using in inflammable and explosive field such as colliery, the oil depot.
(2) reliability height: different with traditional sensors passive position detection mode, the present invention uses the single chip communication technology that Hall circuit is initiatively scanned and encodes, make sensor have automatic error correction function, even have indivedual Hall circuits to lose efficacy, still can rely on the Hall circuit of other operate as normal to judge travel position exactly.
(3) resolution height: the Hall circuit that the present invention adopts is the paster packaging technology, and dense arrangement in printed board, packing density at present be smaller or equal to 3mm each, promptly the resolution of Jian Ceing can reach 3mm, improve much than conventional dry reed pipe, therefore improved position probing resolution widely.
(4) low in energy consumption: with stroke 192mm is example, and sensor overall power electric current is smaller or equal to 7mA.
(5) intellectuality: different with traditional sensors signal one-way transmission, the present invention realizes that by single chip communication the signal between each circuit unit and main frame is two-way interconnected, the main frame output signal can be regulated in a big way, and have communication interface and supply to link to each other with host computer in the future, thereby be convenient to detect the site intelligent management.
Description of drawings
Fig. 1 is the stroke sensor structural representation.
Fig. 2 is electrically connected schematic diagram for circuit unit.
Fig. 3 measures process flow diagram for the present invention.
Embodiment:
The present invention is described further below in conjunction with accompanying drawing.
As shown in Figure 1, the present invention includes nonmagnetic material, the metal tube of making as stainless steel material 1, on metal tube 1, be arranged with the magnet ring 2 suitable with the metal tube external diameter, magnet ring 2 is made by the ferrite of axial charging, magnet ring 2 is installed on the moving component that can move with stroke, and when stroke changed, moving component drove magnet ring 2 and slides along the metal tube outer wall.Continuous n Hall circuit was in conducting state near the magnetic induction density of described magnet ring 2 can trigger, and other Hall circuits then are in cut-off state; Wherein, n 〉=3.Can adjust the quantity of its Hall circuit that can trigger simultaneously according to actual needs by the size of adjusting magnet ring 2.In metal tube 1, be provided with and adaptive double-clad boards 8 such as metal tube 1 internal diameter, length, shape, some Hall circuit arrays 3 are installed in the one side of double-clad board 8, and each sub-single-chip microcomputer 4, host scm 5 and operational amplification circuit 6 are arranged on the another side of double-clad board 8.Hall circuit array 3 links to each other with host scm 5 by each sub-single-chip microcomputer 4 respectively, and the output terminal of host scm 5 is connected with operational amplification circuit 6, and operational amplification circuit 6 links to each other with outer lead 7.Encapsulant 9 sealings are adopted in the end of metal tube 1, adopt epoxy resin as encapsulant.
Described Hall circuit array 3 is staggered on double-clad board 8 along metal tube 1 axis direction by the little power consumption figures Hall circuit of some SMD AH3661.Be integrated with circuit units such as Hall voltage generator, power supply timing switch circuit unit, dynamic offset voltage compensating circuit unit, sampling and holding circuit unit, differential amplifier, double trigger, output lock, MOS field effect efferent duct on the chip of the little power consumption figures Hall integrated circuit of AH3661 type.The power supply timing switch circuit may command Hall circuit that is provided with in the chip alternately is in " dormancy " and " waking up " state, under the 2.75V electric power thus supplied, source current is 2 μ A when " dormancy ", when " waking up " 3mA, on average be about 2.75 μ A, average power consumption has only 8 μ W, reduces by 3 to 4 orders of magnitude than traditional Hall circuit power consumption; Dynamic offset voltage compensating circuit is set, and is in order to eliminate the offset voltage that temperature and mechanical stress produce the Hall voltage generator, to improve the temperature stability of Hall circuit and the symmetry in magnetic field; The setting of double trigger then is to trigger function in order to make Hall circuit have full magnetic pole, promptly no matter use the N utmost point or S pole field all can trigger Hall circuit work, changed traditional Hall circuit and must fix the shortcoming of using a certain particular magnetic polarity to trigger, made that use is more convenient.The Hall circuit of above-mentioned model can be buied by Aichi Electronic Tech Co., Ltd., Nanjing.
The magnetic induction density of described magnet ring 2 can trigger a continuous n Hall circuit and be in conducting state, and other Hall circuits then are in cut-off state; N 〉=3 wherein.Encapsulant 9 sealings are adopted in the end of described metal tube 1.
To require trip sensor measurement range 192mm, resolution 3mm is an example, as calculated, needs two groups of Hall circuit arrays 3, the length 240mm of metal tube 1, external diameter 16mm, internal diameter 13mm.Magnet ring external diameter 24mm, internal diameter 18mm, thickness 6mm.Near the about 5mT of the magnetic induction density magnet ring axle center (milli tesla).Magnet ring is installed on the moving component connector that can move with stroke, and when stroke changed, the moving component connector drove magnet ring 2 and slides along the outer wall of metal tube 1.
2 groups of Hall circuit arrays 3 are housed on the front of double-clad board 8, and every group of Hall circuit array 3 is made up of 32 the little power consumption high-sensitivity digital of SMD AH3661 Hall circuits.Described Hall circuit firing point magnetic induction density (representative value) is 3.5mT, and cut off magnetic induction density (representative value) is 2.5mT, is complementary with the magnetic induction density of described magnet ring; Hall circuit is SMD encapsulation, and physical dimension is 3 * 3 * 1 (mm), considers factors such as pad, and Hall circuit needs two misarrangement positions to install, to satisfy the requirement of resolution 3mm.
Double-clad board 8 back sides are provided with two sub-single-chip microcomputers 4 corresponding to the position of Hall circuit array 3.The model of sub-single-chip microcomputer 4 is ATmega128-1281,64 pin MLF encapsulation.Sub-single-chip microcomputer 4 is formed the basic communication unit with corresponding Hall circuit array 3 respectively, and the basic communication element number can be expanded according to the needs of stroke range to be measured.The basic communication unit links to each other with host scm 5 by two-wire serial communication (12C or SMBUS).
Electrical connection of the present invention as shown in Figure 2.Each Hall circuit array 3 of the present invention is connected with a sub-single-chip microcomputer 4 respectively, and each sub-single-chip microcomputer 4 all is electrically connected with host scm 5, and host scm 5 is electrically connected with operational amplification circuit 6.
As shown in Figure 3, concrete measuring process is as follows:
After the energising, host scm 5 and 4 initialization respectively of sub-single-chip microcomputer, host scm 5 is prepared the communication register of the sub-single-chip microcomputer 4 of scanning.Simultaneously, each sub-single-chip microcomputer 4 of organizing the basic communication unit searches the Hall circuit that whether has the inefficacy of record in the storer separately respectively, if exist, then this Hall circuit is rejected outside sweep limit, scan current Hall circuit duty then, and Hall circuit work at present state sent into the communication register of sub-single-chip microcomputer 4, wait for that host scm 5 searches.Sub-single-chip microcomputer is divided into its state conducting and ends two states according to the information of the single Hall circuit that inquires, and conducting state output low level, corresponding codes are 0; Cut-off state output high level, corresponding codes is 1, sub-single-chip microcomputer is input to its communication register with each Hall circuit corresponding codes and preserves.
After host scm 5 collects the coding of two groups of sub-single-chip microcomputer 4 current Hall circuit duties, carry out aggregation of data and handle.In order to make sensor have automatic error correction function, the present invention adopts Redundancy Design, and when promptly requiring magnet ring to trigger the Hall circuit array, the Hall circuit that is triggered simultaneously in the array remains at n.Set magnet ring simultaneously and can guarantee to trigger simultaneously n Hall circuit, and setting the Hall circuit only scan m or m above conducting, just to be considered as the magnet ring movement position definite, host scm 5 is considered as current magnet ring position with the mid point of n Hall circuit of continuous conducting, after calculating current magnet ring position it is changed into travel information, send into signal amplification unit, finish secondary data output.Repeating the above-mentioned steps holding signal upgrades.Wherein, n 〉=3, and n 〉=m 〉=2, n, m are integer.When m=n, setting the Hall circuit scan m conducting, just to be considered as the magnet ring movement position definite; When 2≤m＜n, setting the Hall circuit that scans m or m above conducting, just to be considered as the magnet ring movement position definite.
Simultaneously, if host scm finds to have the Hall circuit of inefficacy, then this Hall circuit corresponding codes information is sent in the storer of corresponding sub-single-chip microcomputer; The method of judging the Hall circuit that lost efficacy is: if host scm 5 finds to have only independent 1 Hall circuit output low level in the continuous n Hall circuit, then it is considered as losing efficacy and its information is sent to the communication register of sub-single-chip microcomputer 4, this circuit is considered as the Hall circuit that lost efficacy, sub-single-chip microcomputer is when scanning next time, automatically ignore this Hall circuit, and this Hall circuit is considered as exporting high level.Judge that like this position does not rely on single Hall circuit, and rely on the Hall circuit of other several operate as normal still can judge travel position exactly.Wherein n 〉=3, and n 〉=m 〉=2, n, m are integer.
For example, in the present embodiment, set magnet ring and guarantee to trigger simultaneously successively continuous 3 Hall circuit conductings, set the standard of judging the magnet ring position and be when 2 or 3 Hall circuit conductings are arranged in continuous 3 circuit, just be considered as magnet ring and move to and be positioned at middle Hall circuit place in these 3 Hall circuits.
Each sub-single-chip microcomputer 4 once sends four group of 8 bit to host scm 5, this four group of 8 bit respectively with Hall circuit array 3 in 32 Hall circuits corresponding one by one." 1 " when ending owing to Hall circuit simultaneously in the high level corresponding data of output; During conducting, " 0 " in the low level corresponding data of output.And Hall circuit may output low level when losing efficacy, and also may export high level; Therefore need determine the end according to four groups of binary numbers several Hall circuit conductings are arranged.
For example: with 32 Hall circuit number consecutivelies be 1,2,3,4......32,17,18, No. 19 three continuous Hall circuits make their output low level to suppose to have triggered wherein by magnet ring, and also output low level after No. 24 Hall circuits lost efficacy, then sub-single-chip microcomputer 4 sends following four group of 8 bit: 0B11111111 to host scm 5,0B11111111,0B00011110,0B11111111.Host scm 5 receives behind this four group of 8 bit earlier first group, second group and the 4th group of 0B11111111 data is ignored that these data represented these Hall circuits are in cut-off state.The 3rd group of 0B00011110 of selective analysis, carry out right displacement operation to it, thereby eight-digit binary number become eight numerals: 0,0,0,1,1,1,1,0, the level of corresponding successively the 17th, 18,19,20,21,22,23, No. 24 Hall circuits output.Turn left from the right side and to analyze successively: No. 24 Hall circuit is output as 0, No. 23 Hall circuit is output as 1, No. 22 Hall circuit is output as 1, move to this position according to having at least 2 Hall circuit conductings just to be considered as magnet ring in 3 Hall circuits of criterion, so judge that No. 24 Hall circuits are the inefficacy circuit; Successively to 22,21, No. 20 Hall circuit analyses are 1 expression and all are in cut-off state again.Analyze Hall circuit again No. 19, find that it is output as 0, No. 18 Hall circuit output is 0, has 2 Hall circuit conductings continuously; See that again 17 Hall circuits output is 0, continuous 3 Hall circuit conductings, then at present the magnet ring position on No. 18 Hall circuits.If No. 18 Hall circuits are arranged in top one group of two groups of Hall circuit arrays 3, because the moving component band magnet ring and is moved from the bottom up, then the position of No. 18 Hall circuit correspondences is (18+32) * 3=150mm, so the position distance of judging magnet ring Hall circuit 150mm place, below.
Simultaneously, host scm is considered as the circuit that lost efficacy with No. 24 Hall circuits, its information is sent to the memory stores of sub-single-chip microcomputer.Directly ignore when scanning and its output valve is " 1 " next time.By in the circuit behind the above algorithm only otherwise the Hall circuit that lost efficacy continuously occurs, can judge the accurate position of magnet ring.
The sensor is through actual detected, and the supply voltage that uses is 12V, and stroke range is 192mm, and resolution is 3mm, and static current of lcd is 7mA.Every index reaches former designing requirement fully.
According to stroke range to be measured, but respective extension Hall circuit array quantity.Stroke measurment scope for example to be measured is 480mm.Can be 5 groups with the Hall circuit array extension, form by 32 Hall circuits for every group, 5 sub-signal processing units should be arranged.Traveled distance sensor length overall is 520mm, and resolution is 3mm, and static current of lcd is 13mA.
Claims (9)
1. the stroke sensor based on the Hall circuit coding comprises the metal tube (1) that nonmagnetic material is made, and is arranged with the magnet ring (2) suitable with the metal tube external diameter on metal tube (1); It is characterized in that: in metal tube (1), be provided with some Hall circuit arrays (3), Hall circuit array (3) links to each other with host scm (5) by each sub-single-chip microcomputer (4) respectively, the output terminal of host scm (5) is connected with operational amplification circuit (6), and operational amplification circuit (6) links to each other with outer lead (7).
2. a kind of stroke sensor according to claim 1 based on the Hall circuit coding, it is characterized in that: in metal tube (1), be provided with and metal tube (1) internal diameter, the adaptive double-clad board (8) of length, Hall circuit array (3) is installed on the double-clad board (8), and each sub-single-chip microcomputer (4), host scm (5) and operational amplification circuit (6) are arranged on the another side of double-clad board (8).
3. a kind of stroke sensor based on the Hall circuit coding according to claim 1 and 2 is characterized in that: it is staggered on double-clad board (8) that described Hall circuit array (3) is divided into two rows by the little power consumption figures Hall circuit of some SMD AH3661 along metal tube (1) axis direction.
4. a kind of stroke sensor based on the Hall circuit coding according to claim 3, it is characterized in that: described magnet ring (2) is the ferrite bead of axial charging.
5. a kind of stroke sensor according to claim 4 based on the Hall circuit coding, it is characterized in that: the magnetic induction density of described magnet ring (2) can trigger a continuous n Hall circuit and be in conducting state, and other Hall circuits then are in cut-off state; N 〉=3 wherein.
6. according to claim 1,4 or 5 described a kind of stroke sensors based on the Hall circuit coding, it is characterized in that: encapsulant (9) sealing is adopted in the end of described metal tube (1).
7. the described use of claim 1 is carried out the method for stroke measurment based on the stroke sensor of Hall circuit coding, it is characterized in that it comprises the steps:
(1) after the energising, the initialization respectively of host scm and sub-single-chip microcomputer, host scm waits for that sub-single-chip microcomputer finishes information acquisition, host scm is prepared the communication register of the sub-single-chip microcomputer of scanning;
(2) sub-single-chip microcomputer is gathered the information of each Hall circuit:
Sub-single-chip microcomputer is inquired about the record whether the inefficacy Hall circuit is arranged in its storer, if having, then it is rejected outside the scope of scanning; If do not have, then sub-single-chip microcomputer is inquired about each Hall circuit work at present state, sends into the communication register of sub-single-chip microcomputer after encoding, and waits for host query;
(3) host scm scans the communication register internal information of sub-single-chip microcomputer, gathers Hall circuit work at present state;
(4) host scm carries out overall treatment to the data that collect:
Set magnet ring and trigger a continuous n Hall circuit simultaneously:
Set when the above Hall circuit conducting of m or m is wherein arranged, judge that then magnet ring moves to the centre position of n Hall circuit, it is changed into travel information after calculating current magnet ring position, send into the signal operation amplifying circuit;
If find to have the Hall circuit of inefficacy, then this Hall circuit corresponding codes information is sent in the storer of corresponding sub-single-chip microcomputer;
Wherein n 〉=3, and n 〉=m 〉=2, n, m are integer;
(5) signal is finished a signal output after amplifying;
(6) repeat 2～4 steps, keep the communication register data in real time of sub-single-chip microcomputer to upgrade.
8. the method for the described stroke measurment of claim 7 is characterized in that, in the step (2), sub-single-chip microcomputer is according to the information of the single Hall circuit that inquires, and its state is divided into conducting and ends, and conducting state output low level, corresponding codes are 0; Cut-off state output high level, corresponding codes is 1, sub-single-chip microcomputer is input to its communication register with each Hall circuit corresponding codes and preserves.
9. the method for claim 7 or 8 described stroke measurments, it is characterized in that, when judging the Hall circuit that lost efficacy in the step (4), has only 1 Hall circuit output low level if find in the continuous n Hall circuit, judge that then this Hall circuit is the inefficacy circuit, host scm is returned storer to sub-single-chip microcomputer with the information of this Hall circuit correspondence; N 〉=3 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100704379A CN102200426B (en) | 2011-03-23 | 2011-03-23 | Hall encoder-based travel sensor and travel measurement method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100704379A CN102200426B (en) | 2011-03-23 | 2011-03-23 | Hall encoder-based travel sensor and travel measurement method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102200426A true CN102200426A (en) | 2011-09-28 |
| CN102200426B CN102200426B (en) | 2012-06-27 |
Family
ID=44661286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100704379A Active CN102200426B (en) | 2011-03-23 | 2011-03-23 | Hall encoder-based travel sensor and travel measurement method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102200426B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707205A (en) * | 2017-02-06 | 2017-05-24 | 南京艾驰电子科技有限公司 | Integrated gauss meter system and integrated gauss meter |
| CN106896317A (en) * | 2015-12-21 | 2017-06-27 | 瑞昱半导体股份有限公司 | By circuit misarrangement method and circuit debuggers performed by the scan chain of sweep test |
| CN113951908A (en) * | 2021-10-20 | 2022-01-21 | 南京普爱医疗设备股份有限公司 | Position positioning method for track motion machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19643538A1 (en) * | 1996-10-23 | 1998-04-30 | Wandres Siko | Magnetic encoder for absolute length measurement |
| CN2731821Y (en) * | 2004-08-31 | 2005-10-05 | 王金友 | Magnetic induction type electronic range tubular dynamo |
| CN202041169U (en) * | 2011-03-23 | 2011-11-16 | 南京艾驰电子科技有限公司 | Stroke sensor based on encoding of Hall circuit |
-
2011
- 2011-03-23 CN CN2011100704379A patent/CN102200426B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19643538A1 (en) * | 1996-10-23 | 1998-04-30 | Wandres Siko | Magnetic encoder for absolute length measurement |
| CN2731821Y (en) * | 2004-08-31 | 2005-10-05 | 王金友 | Magnetic induction type electronic range tubular dynamo |
| CN202041169U (en) * | 2011-03-23 | 2011-11-16 | 南京艾驰电子科技有限公司 | Stroke sensor based on encoding of Hall circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896317A (en) * | 2015-12-21 | 2017-06-27 | 瑞昱半导体股份有限公司 | By circuit misarrangement method and circuit debuggers performed by the scan chain of sweep test |
| CN106707205A (en) * | 2017-02-06 | 2017-05-24 | 南京艾驰电子科技有限公司 | Integrated gauss meter system and integrated gauss meter |
| CN113951908A (en) * | 2021-10-20 | 2022-01-21 | 南京普爱医疗设备股份有限公司 | Position positioning method for track motion machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102200426B (en) | 2012-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Hsia et al. | Remote monitoring and smart sensing for water meter system and leakage detection | |
| CN103149917B (en) | Hydraulic safety monitoring system based on wireless sensor network | |
| CN101561244B (en) | Magnetostrictive displacement sensor with high precision and large measuring range | |
| CN203940782U (en) | A kind of antiaircraft gun automatic machine parameter test device | |
| CN103727964B (en) | A kind of mechanics parameter based on LC resonant transducer measures system and measuring method | |
| CN116148527B (en) | Electronic electric energy meter transformation device capable of correcting errors | |
| CN102200426B (en) | Hall encoder-based travel sensor and travel measurement method thereof | |
| CN201463826U (en) | Magnetic array position sensing device | |
| CN202041169U (en) | Stroke sensor based on encoding of Hall circuit | |
| CN109520547A (en) | High-low temperature precision detection device and detection method for photoelectric encoder | |
| CN202904029U (en) | Low-power nuclear signal pulse amplitude analyzer | |
| CN201335718Y (en) | Bubble-type water gauge | |
| CN207866401U (en) | Self-power wireless measuring device for measuring engine link stress | |
| CN103824112A (en) | Electromagnetic induction linear reading device for mechanical counter | |
| CN201561984U (en) | Device for detecting speed and position of movable object | |
| CN103335706A (en) | Method for online detecting characteristics of engine vibration sensor | |
| CN208704832U (en) | A kind of conducting type electric water gauge and its remote monitoring system | |
| CN2634115Y (en) | Remote sensing type well deep monitor | |
| CN2811995Y (en) | Electrode type oil-water interface transducer | |
| CN203422018U (en) | Artillery automata floating performance detector | |
| CN206135881U (en) | Counting assembly that sampling of low -power consumption automatic control magneto resistive sensor detected | |
| CN102679859B (en) | Displacement sensor and method for measuring displacement by using same | |
| CN206905707U (en) | A kind of ray displacement sensing system | |
| CN204902951U (en) | Digital capacitanc level meter based on TDC chip technology | |
| CN105181080B (en) | A kind of digitlization capacitive level probe based on TDC chip technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |