CN104677320A - Non-contact position detector for detecting position of steel ring plate of glass twisting machine - Google Patents
Non-contact position detector for detecting position of steel ring plate of glass twisting machine Download PDFInfo
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- CN104677320A CN104677320A CN201410436598.9A CN201410436598A CN104677320A CN 104677320 A CN104677320 A CN 104677320A CN 201410436598 A CN201410436598 A CN 201410436598A CN 104677320 A CN104677320 A CN 104677320A
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- Prior art keywords
- signal
- diode
- permanent magnet
- alloy pipe
- aluminium
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
Abstract
The invention provides a non-contact position detector for detecting the position of a steel ring plate of a glass twisting machine, belonging to the field of photoelectric detection, and solving the problems of high cost, long supply cycle, easiness in abrasion, complexity in acquisition and processing of signals and inconvenience in maintenance of the existing position detector. The position detector comprises a signal acquisition block and a signal receiving device; the signal acquisition module is fixedly mounted on a mechanism capable of synchronously moving along the steel ring plate and is internally provided with a permanent magnet; the signal receiving device is fixedly mounted at a predetermined position in a mechanical cabinet of the glass twisting machine; the signal receiving device comprises four signal acquisition plates which are used for acquiring magnetic sensitive input signals of a permanent magnet on the signal acquisition blocks in the corresponding predetermined positions and is used for converting the magnetic sensitive input signals into standard voltage pulse output signals. The position detector is low in cost, simple and liable in signal acquisition and processing, liable to implement and convenient to mount and maintain.
Description
Technical field
The present invention relates to photo-electric sensing detection device field, particularly relating to a kind of contactless position pick-up unit for detecting glass twister ring rail position.
Background technology
In field of textile machinery, the position control of glass twister ring rail and detection are indispensable piths in its electric-control system, if ring rail position is detected inaccurate, spin extreme influence forming quality, reduce product quality.
The system of following centralized detecting glass twister ring rail position is mainly contained: wherein a kind of glass twister electric-control system adopts contact linear grating chi to detect ring rail position in prior art, grating scale adopts contact slide block, this system long-play easily causes wearing and tearing, thus reduction accuracy of detection, and this system anti-electromagnetic interference capability is more weak, signaling conversion circuit is complicated; Another known glass twister electric-control system adopts absolute rotary encoder to detect ring rail position, and this system is higher to scrambler accuracy requirement, and scrambler cost is high, complicated to the circuit structure of code device signal collection and conversion in control system; A kind of glass twister electric-control system is also had to adopt the contactless linear displacement transducer of import to detect ring rail position, although this systems axiol-ogy effect is better, the inlet sensor cost wherein used is high, and delivery cycle is long, the maintenance cost of whole system is high, signals collecting and conversion complexity.
Based on above factor, be badly in need of that a kind of cost is low, signals collecting and process simple, be easy to realize, install and position detecting device easy to maintenance.
Summary of the invention
The invention provides a kind of contactless position pick-up unit for detecting glass twister ring rail position, its problem to be solved is: overcome that existing glass twister ring rail position detecting device cost is high, delivery cycle long, easy to wear, signals collecting and process complicated, safeguard the problems such as inconvenient.Contactless position pick-up unit for detecting glass twister ring rail position provided by the invention adopts contactless photoelectric component, effectively can avoid mechanical slip friction in use procedure, cost is low, signals collecting and process simple and easy, be easy to realize, convenient for installation and maintenance.
A kind of contactless position pick-up unit for detecting glass twister ring rail position provided by the invention, comprising: signals collecting block, is fixedly mounted in the mechanism that is synchronized with the movement with ring rail, is provided with permanent magnet in described signals collecting block; Signal receiving device, is fixedly mounted on precalculated position in glass twister machinery cabinet, comprises the signal acquiring board that four pieces correspond respectively to ring rail four different pre-positions; Signal acquiring board described in every block is for gathering the magnetosensitive input signal of the permanent magnet on the signals collecting block moving to self corresponding pre-position and being converted into standard voltage pulses output signal.
Preferably, described signal acquiring board comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance, Hall element, triode, the first diode, the second diode, the 3rd diode; Described signal acquiring board 24V DC power supply, described 24V direct supply successively by connecting the positive pole of described second diode after the first resistance, Hall element, the minus earth of described second diode; The emitter-base bandgap grading of described triode connects described 24V direct supply, and base stage connects described Hall element by described second resistance, and collector connects the positive pole of described second diode by described 4th resistance; Described 3rd resistance one end connects the collector of described triode, and the other end connects the negative pole of described 3rd diode; The positive pole of described 3rd diode connects the positive pole of described second diode; Described first diode is light emitting diode, and described first diode inverse parallel is in described 3rd diode two ends; Described Hall element is converted into digital voltage signal for paratonic movement to the magnetosensitive input signal of the permanent magnet on the signals collecting block of the corresponding pre-position of current demand signal collection plate, and the collector terminal output voltage signal of described triode is the potential pulse output signal of described signal acquiring board.
Preferably, described signal receiving device also comprises: insulation lath, it is provided with at a certain distance four signal acquiring boards and lays position, and lay at each signal acquiring board the fixing screw hole that a place is provided with signal acquiring board, described signal acquiring board is fixed on described signal acquiring board by screw lays position place; Wire hole is left in the side that described insulation lath also lays position at every block signal collection plate, opposite side is provided with stop screw hole; Aluminium-alloy pipe, described insulation lath is fixed in described aluminium-alloy pipe; Attachment plug cover plate, be installed on one end of described aluminium-alloy pipe, be provided with power interface and signaling interface, the power supply of signal acquiring board described in every block and the IO interface of signal are connected with the power interface on described attachment plug cover plate and signaling interface through after the wire hole on described insulation lath respectively by electric wire; Fixing end cap, is arranged on the other end of described aluminium-alloy pipe, is provided with mounting-positioning holes, for regulating the installation site of described insulation lath in described aluminium-alloy pipe and sealing described aluminium-alloy pipe.
Preferably, described aluminium-alloy pipe is strip square tube; Described signal receiving device also comprises for described aluminium-alloy pipe being fixed on the hold-down support of pre-position and fixation clamp in glass twister machinery cabinet; Described hold-down support is a cube, described cube upper surface has the groove for closely putting into bottom described aluminium-alloy pipe, and the bottom groove both sides of described hold-down support are provided with the screw hole being fixed in pre-position in glass twister machinery cabinet for attachment screw; Described fixation clamp is a tongue shape; The groove width of the tongue of described fixation clamp and the groove of described hold-down support is equal, is oppositely arranged to be formed to put into it and the coffin fixed by described aluminium-alloy pipe for described aluminium-alloy pipe; Fixed by screw between described fixation clamp and described hold-down support.
Preferably, above-mentioned any one for detecting in the contactless position pick-up unit of glass twister ring rail position, described signals collecting block profile is cube, and this cubical upper surface center has the permanent magnet storehouse of a reservation shape, the left and right sides, described permanent magnet storehouse, axis direction perpendicular to described permanent magnet storehouse are provided with two fixing screw holes for fixing described signals collecting block; Permanent magnet is provided with in described permanent magnet storehouse.
Preferably, the described cube for carrying described permanent magnet in described signals collecting block is made up of nonmetal polytetrafluoro material.
The beneficial effect of technique scheme of the present invention is as follows:
Contactless position pick-up unit for detecting glass twister ring rail position provided by the invention adopts contactless photoelectric component to detect, the device wearing and tearing not only can effectively avoiding mechanical slip friction to cause, increase the service life, and structure is simple, convenient for installation and maintenance, components and parts cost is low, and buying easily; In addition, output due to position detecting device provided by the invention is digital pulse signal, anti-electromagnetic interference capability is strong, detection accuracy and reliability high, signals collecting and process convenient, the glass twister electric-control system that to be particularly useful for the supporting FM353 locating module of Siemens S7-300 PLC be control core.
Accompanying drawing explanation
The brief configuration schematic diagram of a kind of contactless position pick-up unit for detecting glass twister ring rail position that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the preferred electrical architecture figure of signal acquiring board;
Fig. 3 is the surface structure schematic diagram of preferred signal receiving device;
Fig. 4 is the plan structure figure of the insulation lath in signal receiving device;
Fig. 5 is the vertical view of hold-down support;
Fig. 6 is the A-A cut-open view in Fig. 5;
Fig. 7 is the vertical view of fixation clamp;
Fig. 8 is the front view of Fig. 7;
Fig. 9 is the preferred structure vertical view of signals collecting block;
Figure 10 is the B-B cut-open view in Fig. 9;
[description of reference numerals]:
1, signals collecting block;
2, signal receiving device;
3, signal acquiring board;
4, aluminium-alloy pipe;
5, attachment plug cover plate;
6, fixing end cap;
7, insulate lath;
8, signal acquiring board lays position;
9, the fixing screw hole of signal acquiring board;
10, wire hole;
11, stop screw hole;
12, mounting-positioning holes;
13, groove;
14, screw hole;
15, tongue;
16, permanent magnet storehouse;
17, signals collecting block fixing screw hole;
R1, the first resistance;
R2, the second resistance;
R3, the 3rd resistance;
R4, the 4th resistance;
Q2, Hall element;
Q1, triode;
D1, the first diode;
D2, the second diode;
D3, the 3rd diode.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Be illustrated in figure 1 the brief configuration schematic diagram of a kind of contactless position pick-up unit for detecting glass twister ring rail position that the embodiment of the present invention provides, as shown in fig. 1, this position detecting device comprises signals collecting block 1 and signal receiving device 2.Wherein, signals collecting block 1 is fixedly mounted in the mechanism that is synchronized with the movement with ring rail, and is provided with permanent magnet in it.Comprise the signal acquiring board 3 that four pieces correspond respectively to the signals collecting block 1 of ring rail four different pre-positions in signal receiving device 2, signal receiving device 2 is fixedly mounted on the precalculated position in glass twister machinery cabinet; Every block signal collection plate 3 is for gathering the magnetosensitive input signal of the permanent magnet on the signals collecting block 1 moving to self corresponding pre-position and being converted into standard voltage pulses output signal.This position detecting device is exportable four railway digital voltage pulse signals altogether, and this four roads signal can be used as ring rail position and detects foundation.
The principle of work of the above-mentioned contactless position pick-up unit for detecting glass twister ring rail position that the embodiment of the present invention provides is: when ring rail moves, signals collecting block 1 is driven to be synchronized with the movement, time near the corresponding precalculated position of arbitrary signal acquiring board 3 that signals collecting block 1 moves to signal receiving device 2, this signal acquiring board 3 senses the magnetosensitive signal of the permanent magnet on signals collecting block 1, produce a pulse voltage signal and export the FM353 locating module of existing electric-control system to, control system determines ring rail current location thus.This pick-up unit inside installs four block signal collection plates 3 altogether, the signals collecting block 1 of corresponding ring rail four different pre-positions, these four diverse locations are respectively reference point locations, reference point home position, ring rail meta and ring rail tip position, these four positions also simultaneously inner four fixed pulse values of corresponding control system.In glass twister system software, by the fixed position umber of pulse that contrast FM353 locating module current PRF number and four signal acquiring boards 3 export, be between which lane place to determine that ring rail is current, and ring rail speed and position control can be revised in real time and be adjusted according to pulse difference.
Preferably, be illustrated in figure 2 the preferred electrical architecture figure of signal acquiring board, as shown in Figure 2, signal acquiring board comprises the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, Hall element Q2, triode Q1, the first diode D1, the second diode D2 and the 3rd diode D3.Wherein, the first diode D1 is light emitting diode, and the second diode D2 and the 3rd diode D3 is general-purpose diode.This signal acquiring board 24V DC power supply, 24V direct supply is successively by connecting the positive pole of the second diode D2, the minus earth of the second diode D2 after the first resistance R1, Hall element Q2; The emitter-base bandgap grading of triode Q1 connects 24V direct supply, and base stage connects Hall element Q2 by the second resistance R2, and collector connects the positive pole of the second diode D2 by the 4th resistance R4; The collector of the 3rd resistance R3 one end connecting triode Q1, the other end connects the negative pole of the 3rd diode D3; The positive pole of the 3rd diode D3 connects the positive pole of the second diode D2; First diode D1 inverse parallel is in the two ends of the 3rd diode D3.Hall element Q2 is used for paratonic movement to the magnetosensitive input signal of the permanent magnet on the signals collecting block 1 of the corresponding pre-position of current demand signal collection plate 3 and is converted into digital voltage signal, and the collector terminal of triode Q1 (the OUT end namely in Fig. 2) output voltage signal is that the potential pulse of signal acquiring board outputs signal.The principle of work of this signal acquiring board circuit is: the first resistance R1 and the second resistance R2, as two pull-up resistors, act as and ensures that Hall element Q2 normally works.After Hall element Q2 senses the magnetosensitive input signal of signals collecting block 1; Hall element Q2 exports digital voltage signal; triode Q1 is driven to connect by the second resistance R2; then OUT holds output voltage signal; 3rd resistance R3 works simultaneously, and light emitting diode D1 lights, and indicates current Hall element Q2 to sense input signal; OUT end has been in signal output services state, and the second diode D2 and the 3rd diode D3 plays the effect that protection circuit normally works.
Preferably, be illustrated in figure 3 the surface structure schematic diagram of preferred signal receiving device, this signal receiving device also comprises insulation lath (not shown in Fig. 3), aluminium-alloy pipe 4, attachment plug cover plate 5 and fixing end cap 6.Fig. 4 is the plan structure figure of the insulation lath in signal receiving device.
As shown in Figure 3 and Figure 4, insulation lath 7 is evenly provided with four signal acquiring boards at a certain distance and lays position 8, and lay at each signal acquiring board the fixing screw hole 9 that position 8 place is provided with signal acquiring board, then aforementioned signal collection plate is fixed on signal acquiring board by screw and lays position 8 place.In addition, wire hole 10 is left in the side that the lath 7 that insulate also lays position 8 at every block signal collection plate, opposite side is provided with stop screw hole 11.Insulation lath 7 is fixed in aluminium-alloy pipe 4.Attachment plug cover plate 5 is installed on one end of aluminium-alloy pipe 4, attachment plug cover plate 5 is interface boards of all electronic devices and components in signal receiving device, which is provided with power interface and signaling interface, every power supply of block signal collection plate and the IO interface of signal are connected with the power interface on attachment plug cover plate 5 and signaling interface through after the wire hole 10 on insulation lath 7 respectively by electric wire.Fixing end cap 6 is arranged on the other end (other end that namely attachment plug cover plate 5 is relative) of aluminium-alloy pipe 4, be provided with mounting-positioning holes 12, can by mounting-positioning holes 12 being designed in diverse location to realize regulating the object of insulation lath 7 position in aluminium-alloy pipe 4, fixing end cap 6 is also for sealing aluminium alloy pipe 4.
Preferably, aluminium-alloy pipe 4 is strip square tube; Signal receiving device 2 also comprises for aluminium-alloy pipe 4 being fixed on the hold-down support of pre-position and fixation clamp in glass twister machinery cabinet.Figure 5 shows that the vertical view of hold-down support, Fig. 6 is the A-A cut-open view in Fig. 5.As shown in Figure 5 and Figure 6, hold-down support profile is a cube, cube upper surface has the groove 13 supplying the bottom of aluminium-alloy pipe 4 closely to put into, and bottom groove 13 both sides of hold-down support are provided with the screw hole 14 being fixed in pre-position in glass twister machinery cabinet for attachment screw.Figure 7 shows that the vertical view of fixation clamp, Fig. 8 is the front view of Fig. 7.As shown in Figure 7 and Figure 8, fixation clamp is a tongue shape; The groove width of the tongue 15 of fixation clamp and the groove of hold-down support is equal.The tongue of fixation clamp and hold-down support, slot opening are oppositely arranged to be formed puts into it and the coffin fixed by aluminium-alloy pipe 4 for aluminium-alloy pipe 4.Fixed by screw between fixation clamp and hold-down support.
Be illustrated in figure 9 the preferred structure vertical view of signals collecting block, Figure 10 is the B-B cut-open view in Fig. 9.As shown in Figure 9 and Figure 10, this example provide any one for detecting in the contactless position pick-up unit of glass twister ring rail position, signals collecting block 1 profile is cube, and this cubical upper surface center has the permanent magnet storehouse 16 (in Fig. 9, permanent magnet storehouse 16 is cylindrical hole) of a reservation shape, is provided with permanent magnet in permanent magnet storehouse 16.The left and right sides, permanent magnet storehouse 16, axis direction perpendicular to permanent magnet storehouse 16 are provided with two signals collecting block fixing screw holes 17 for fixed signal collection block 1.Preferably, the cube for carrying permanent magnet in signals collecting block 1 is made up of nonmetal polytetrafluoro material.
Contactless position pick-up unit for detecting glass twister ring rail position provided by the invention adopts contactless photoelectric component to detect, the device wearing and tearing not only can effectively avoiding mechanical slip friction to cause, increase the service life, and structure is simple, convenient for installation and maintenance, components and parts cost is low, and buying easily; In addition, output due to position detecting device provided by the invention is digital pulse signal, anti-electromagnetic interference capability is strong, detection accuracy and reliability high, signals collecting and process convenient, the glass twister electric-control system that to be particularly useful for the supporting FM353 locating module of Siemens S7-300 PLC be control core.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1., for detecting a contactless position pick-up unit for glass twister ring rail position, it is characterized in that, comprise:
Signals collecting block, is fixedly mounted in the mechanism that is synchronized with the movement with ring rail, is provided with permanent magnet in described signals collecting block;
Signal receiving device, is fixedly mounted on precalculated position in glass twister machinery cabinet, comprises the signal acquiring board that four pieces correspond respectively to ring rail four different pre-positions; Signal acquiring board described in every block is for gathering the magnetosensitive input signal of the permanent magnet on the signals collecting block moving to self corresponding pre-position and being converted into standard voltage pulses output signal.
2. as claimed in claim 1 for detecting the contactless position pick-up unit of glass twister ring rail position, it is characterized in that, described signal acquiring board comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance, Hall element, triode, the first diode, the second diode, the 3rd diode; Described signal acquiring board 24V DC power supply, described 24V direct supply successively by connecting the positive pole of described second diode after the first resistance, Hall element, the minus earth of described second diode; The emitter-base bandgap grading of described triode connects described 24V direct supply, and base stage connects described Hall element by described second resistance, and collector connects the positive pole of described second diode by described 4th resistance; Described 3rd resistance one end connects the collector of described triode, and the other end connects the negative pole of described 3rd diode; The positive pole of described 3rd diode connects the positive pole of described second diode; Described first diode is light emitting diode, and described first diode inverse parallel is in described 3rd diode two ends;
Described Hall element is converted into digital voltage signal for paratonic movement to the magnetosensitive input signal of the permanent magnet on the signals collecting block of the corresponding pre-position of current demand signal collection plate, and the collector terminal output voltage signal of described triode is the potential pulse output signal of described signal acquiring board.
3. as claimed in claim 2 for detecting the contactless position pick-up unit of glass twister ring rail position, it is characterized in that, described signal receiving device also comprises:
Insulation lath, it is provided with at a certain distance four signal acquiring boards and lays position, and lay at each signal acquiring board the fixing screw hole that a place is provided with signal acquiring board, described signal acquiring board is fixed on described signal acquiring board by screw lays position place; Wire hole is left in the side that described insulation lath also lays position at every block signal collection plate, opposite side is provided with stop screw hole;
Aluminium-alloy pipe, described insulation lath is fixed in described aluminium-alloy pipe;
Attachment plug cover plate, be installed on one end of described aluminium-alloy pipe, be provided with power interface and signaling interface, the power supply of signal acquiring board described in every block and the IO interface of signal are connected with the power interface on described attachment plug cover plate and signaling interface through after the wire hole on described insulation lath respectively by electric wire;
Fixing end cap, is arranged on the other end of described aluminium-alloy pipe, is provided with mounting-positioning holes, for regulating the installation site of described insulation lath in described aluminium-alloy pipe and sealing described aluminium-alloy pipe.
4. as claimed in claim 3 for detecting the contactless position pick-up unit of glass twister ring rail position, it is characterized in that, described aluminium-alloy pipe is strip square tube; Described signal receiving device also comprises for described aluminium-alloy pipe being fixed on the hold-down support of pre-position and fixation clamp in glass twister machinery cabinet;
Described hold-down support is a cube, described cube upper surface has the groove for closely putting into bottom described aluminium-alloy pipe, and the bottom groove both sides of described hold-down support are provided with the screw hole being fixed in pre-position in glass twister machinery cabinet for attachment screw;
Described fixation clamp is a tongue shape; The groove width of the tongue of described fixation clamp and the groove of described hold-down support is equal, is oppositely arranged to be formed to put into it and the coffin fixed by described aluminium-alloy pipe for described aluminium-alloy pipe; Fixed by screw between described fixation clamp and described hold-down support.
5. the contactless position pick-up unit for detecting glass twister ring rail position as described in any one of Claims 1-4, it is characterized in that, described signals collecting block profile is cube, and this cubical upper surface center has the permanent magnet storehouse of a reservation shape, the left and right sides, described permanent magnet storehouse, axis direction perpendicular to described permanent magnet storehouse are provided with two fixing screw holes for fixing described signals collecting block; Permanent magnet is provided with in described permanent magnet storehouse.
6. as claimed in claim 5 for detecting the contactless position pick-up unit of glass twister ring rail position, it is characterized in that, the described cube for carrying described permanent magnet in described signals collecting block is made up of nonmetal polytetrafluoro material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436598.9A CN104677320A (en) | 2014-08-29 | 2014-08-29 | Non-contact position detector for detecting position of steel ring plate of glass twisting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436598.9A CN104677320A (en) | 2014-08-29 | 2014-08-29 | Non-contact position detector for detecting position of steel ring plate of glass twisting machine |
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| Publication Number | Publication Date |
|---|---|
| CN104677320A true CN104677320A (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410436598.9A Pending CN104677320A (en) | 2014-08-29 | 2014-08-29 | Non-contact position detector for detecting position of steel ring plate of glass twisting machine |
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| Country | Link |
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| CN (1) | CN104677320A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112363445A (en) * | 2020-10-30 | 2021-02-12 | 北京精密机电控制设备研究所 | Glass twister control system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06160004A (en) * | 1992-11-24 | 1994-06-07 | Meidensha Corp | Length measuring device for steel panel |
| CN2371541Y (en) * | 1999-03-23 | 2000-03-29 | 杨珍荣 | Hall switch position sensor |
| JP2000337928A (en) * | 1999-05-27 | 2000-12-08 | Sony Corp | Position detecting device and method for correcting position detection signal |
| CN1286750A (en) * | 1998-02-13 | 2001-03-07 | 凤凰股份有限公司 | Device for continuously monitoring junction of conveyor belt |
-
2014
- 2014-08-29 CN CN201410436598.9A patent/CN104677320A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06160004A (en) * | 1992-11-24 | 1994-06-07 | Meidensha Corp | Length measuring device for steel panel |
| CN1286750A (en) * | 1998-02-13 | 2001-03-07 | 凤凰股份有限公司 | Device for continuously monitoring junction of conveyor belt |
| CN2371541Y (en) * | 1999-03-23 | 2000-03-29 | 杨珍荣 | Hall switch position sensor |
| JP2000337928A (en) * | 1999-05-27 | 2000-12-08 | Sony Corp | Position detecting device and method for correcting position detection signal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112363445A (en) * | 2020-10-30 | 2021-02-12 | 北京精密机电控制设备研究所 | Glass twister control system |
| CN112363445B (en) * | 2020-10-30 | 2021-12-07 | 北京精密机电控制设备研究所 | Glass twister control system |
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