CN110245528A - A kind of computer network information safety device - Google Patents
A kind of computer network information safety device Download PDFInfo
- Publication number
- CN110245528A CN110245528A CN201910375957.7A CN201910375957A CN110245528A CN 110245528 A CN110245528 A CN 110245528A CN 201910375957 A CN201910375957 A CN 201910375957A CN 110245528 A CN110245528 A CN 110245528A
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- China
- Prior art keywords
- gear
- cabinet
- fixedly mounted
- circular hole
- cylinder
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/86—Secure or tamper-resistant housings
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/88—Detecting or preventing theft or loss
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Software Systems (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
A kind of computer network information safety device, including cabinet, cabinet right side opens up circular hole by place near to the upper end, lateral cylinder is coupled in circular hole, cylinder can transverse shifting and rotation in circular hole, two sides are symmetrical arranged lateral inserted link up and down for the inner face of circular hole, are equipped with horizontal axis on the left of the left end of inserted link, the left end of horizontal axis and pressure sensor contacts cooperate, and the outer diameter and the number of teeth of first gear and second gear are all the same.When the present invention uses, several first gears are rotated random angle by user respectively first, the angle value for needing rotating cylinder to be directed toward the instruction block on dial is identical as the angle-data of corresponding first gear, inserted link is overlapped with the through-hole in the first gear at this time, the owner of the invention can be received in time alert notice by handheld terminal and make suitable action, the unfolding mode of invention is more difficult to crack opening relative to traditional physical protection mode, more safe.
Description
Technical field
The invention belongs to information security field, specifically a kind of computer network information safety device.
Background technique
Currently, information security mainly includes the content of following five aspect, i.e., it need to guarantee the confidentiality of information, authenticity, complete
The safety of whole property, unauthorised copies and institute's parasitic system.The range that information security itself includes is very big, including how preventing
The leakage of model commercial enterprise secret, prevention teenager are to leakage of browsing, personal information of flame etc., and current computer
It takes measures to mostly use software cryptography to protect greatly in information security, and there is the drawbacks of being cracked in this guard method, and object
The mode for managing protection is then more direct effective, contact its criminal can not directly with computer body, thus can not
Obtain the information resources of computer body.
Summary of the invention
The present invention provides a kind of computer network information safety device, to solve defect in the prior art.
The present invention is achieved by the following technical programs:
A kind of computer network information safety device, including cabinet, cabinet right side open up circular hole by place near to the upper end, match in circular hole
Close the lateral cylinder of installation, cylinder can transverse shifting and rotation in circular hole, two sides are symmetrical arranged cross to the inner face of circular hole up and down
To inserted link, be equipped with horizontal axis on the left of the left end of inserted link, horizontal axis left upper part is equipped with traverse rod, and traverse rod is fixedly mounted on top in cabinet
Portion, traverse rod bottom are coupled sliding block, and horizontal axis is mounted on slider bottom by axle bed, lead between sliding block left end and the left end of traverse rod
It crosses spring to be fixedly connected, pressure sensor is arranged in the left end of horizontal axis, and the left end of horizontal axis and pressure sensor contacts cooperate, horizontal axis
Right part is set with several equally distributed first gears by bearing, is respectively provided with second gear, second gear on the downside of first gear
It is fixedly mounted in the shaft of angular transducer, second gear is engaged with corresponding first gear to be cooperated, and angular transducer is equal
It is fixed by the bracket installation on a mounting board, mounting plate is fixedly mounted on cabinet wall, controller is fixedly mounted in cabinet, the
Two through-holes are symmetrically opened up on one gear centered on central axes, between two through-bore axis in the same first gear
Distance is equal with the distance between two root cutting rod axis, and inserted link can be inserted into corresponding through-hole, in the same first gear
The left end side of one of through-hole is fixedly mounted close to inductor, is fixedly mounted signal projector outside cabinet, in cabinet
Main frame is set, electromagnetic switch is fixedly mounted in cabinet, one end of electromagnetic switch is connected with one end of supply power supply line, supplies
The side wall of cabinet is passed through to power supply line, the other end of electromagnetic switch is connected with main frame by connecting power supply line, and pressure passes
Sensor is connected with controller close to inductor, angular transducer, signal projector, electromagnetic switch, and signal projector passes through nothing
Gauze network is connected with handheld terminal, and handheld terminal is equipped with viewing area, and graduated collar, cylinder top is fixedly mounted in the outer end of circular hole
Portion opens up strip grooves, and several equally distributed instruction blocks, the spacing and phase of two adjacent instruction blocks are fixedly mounted in strip grooves
The spacing of two adjacent first gears is equal, and the first gear right end of the rightmost side and the spacing of graduated collar right end are L, inserted link
Left side is M at a distance from the instruction block left end of the leftmost side, and L=M, the position that box top corresponds to first gear opens up through groove,
The top of first gear is located at the outside of cabinet through corresponding through groove, and angle index item is uniformly arranged on dial and is carved with pair
Alarm is arranged in the angle value answered, cabinet outside, and alarm is connected with controller, the outer diameter and tooth of first gear and second gear
Number is all the same.
Stop collar, limit is arranged in a kind of computer network information safety device as described above, the inner end of the circular hole
Ring is fixedly mounted on cylinder, and the USB jack being connected with main frame is fixedly mounted outside cabinet.
The inner end downside of a kind of computer network information safety device as described above, the circular hole is equipped with vertical electricity
Dynamic telescopic rod, the fixed link lower end of electric telescopic rod is fixed by the bracket with cabinet wall to be connect, the telescopic rod of electric telescopic rod
Upper end is fixedly mounted U-shaped bar, and the outer end side of cylinder is embedded in Fingerprint Identification Unit, Fingerprint Identification Unit and electric telescopic rod with control
Device is connected.
A kind of computer network information safety device as described above, the instruction block are made of noctilucence material, scale
Scale strip on disk is noctilucence material.
A kind of computer network information safety device as described above, the box house bottom are equipped with battery, case
Body sidewall is set to the connected charge port of battery, pressure sensor, close to inductor, angular transducer, signal projector, electricity
Magnetic switch, controller are connected to the battery.
The invention has the advantages that the present invention is in use, user first rotates several first gears at random respectively
Angle, first gear are rotated by the corresponding angular transducer of engagement drive with second gear, and angular transducer measures correspondence
First gear rotation angle and data-signal is transmitted to controller, controller is by several first gears from right to left
The angle-data of rotation is transmitted to handheld terminal by signal projector and shows in viewing area, and handheld terminal can be can only hand
The equipment such as machine, the combination of several first gear angle-datas from right to left are to open password of the invention, it is desirable to be opened
The present invention, user protrude into cylinder into cabinet, when indicating block close to dial, need rotating cylinder that the instruction block is made to exist
The angle value being directed toward on dial is identical as the angle-data of corresponding first gear, at this time on inserted link and the first gear
Through-hole is overlapped, and continues to protrude into cylinder, and inserted link passes through the through-hole in the first gear, until next instruction block is close to dial
When operated with above-mentioned principle, can be successively inserted link pass through several first gears on through-hole, during operation insert
Bar is not overlapped with corresponding through-hole, the right side face contact of inserted link left end and first gear, and inserted link can give the first gear at this time
One thrust to the left, the thrust drive horizontal axis to move to left, pressure value that pressure sensor detects increase concurrent electric signals to
Controller, controller controls alarm equipment alarm at this time, and sends warning message to handheld terminal, originally by signal projector simultaneously
The owner of invention can be received in time alert notice by handheld terminal and make suitable action, and user passes through correct operation
When inserted link being made to sequentially pass through the through-hole in different first gears, several successively detect approach signal close to inductor and will
Signal is sent to controller, and when controller receives all approach signals close to inductor, control electromagnetic switch closure is logical
Electricity, main frame is powered and is switched at this time, and after the completion of use, main frame shutdown pulls out cylinder to initial bit
It sets, several first gears are rotated random angle by present invention power-off respectively again, are opened password of the invention at this time and are occurred
Variation, the configuration of the present invention is simple and ingenious can be changed arbitrarily at random by shirtsleeve operation and open password of the invention, password
Every time will not be the same, this design can make other people that can not open main frame and steal internal the file information, and can and
The information security of computer can be effectively protected in alarm, and unfolding mode of the invention is relative to traditional physical protection mode
It is more difficult to crack opening, it is more safe.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is structural schematic diagram of the invention；Fig. 2 is I partial enlarged view of Fig. 1；Fig. 3 is the A direction view of Fig. 1
Enlarged drawing；Fig. 4 is the structural schematic diagram of handheld terminal.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
A kind of computer network information safety device, as shown, including cabinet 1,1 right side of cabinet is opened by place near to the upper end
If circular hole 2, be coupled lateral cylinder 3 in circular hole 2, cylinder 3 can transverse shifting and rotation in circular hole 2, the inner end of circular hole 2
Two sides are symmetrical arranged lateral inserted link 4 up and down in face, horizontal axis 5 are equipped on the left of the left end of inserted link 4,5 left upper part of horizontal axis is equipped with traverse rod
6, traverse rod 6 is fixedly mounted on 1 inner top of cabinet, and 6 bottom of traverse rod is coupled sliding block 7, and horizontal axis 5 is mounted on sliding block 7 by axle bed 8
Bottom is fixedly connected between 7 left end of sliding block and the left end of traverse rod 5 by spring 9, and pressure sensor 10 is arranged in the left end of horizontal axis 5,
The left end of horizontal axis 5 is engaged with pressure sensor 10, and the right part of horizontal axis 5 is set with several equally distributed first teeth by bearing
Wheel 11, the downside of first gear 11 are respectively provided with second gear 12, and second gear 12 is fixedly mounted on turning for angular transducer 13
On axis, second gear 12 is engaged with corresponding first gear 11 to be cooperated, and angular transducer 13, which is fixed by the bracket, to be mounted on
In loading board 14, mounting plate 14 is fixedly mounted on 1 inner wall of cabinet, fixed installation controller 15 in cabinet 1, in first gear 11
The distance between two through-holes 16, two 16 axis of through-hole in the same first gear 11 are symmetrically opened up centered on central axes
The distance between two root cutting bars, 4 axis is equal, and inserted link 4 can be inserted into corresponding through-hole 16, in the same first gear 11
The left end side of one of through-hole 16 be fixedly mounted close to inductor 17, signal projector is fixedly mounted outside cabinet 1
18, main frame 19 is set in cabinet 1, electromagnetic switch 20, one end of electromagnetic switch 20 and supply electricity are fixedly mounted in cabinet 1
One end of source line 21 is connected, and supply power supply line 21 passes through the side wall of cabinet 1, the other end and main frame 19 of electromagnetic switch 20
It is connected by connection power supply line 22, pressure sensor 10, close to inductor 17, angular transducer 13, signal projector 18, electromagnetism
Switch 20 is connected with controller 15, and signal projector 18 is connected by wireless network with handheld terminal 32, on handheld terminal 32
Equipped with viewing area 33, graduated collar 23 is fixedly mounted in the outer end of circular hole 2, opens up strip grooves 24 at the top of cylinder 3, in strip grooves 24
Several equally distributed instruction blocks 25, the spacing and two adjacent first gears 11 of two adjacent instruction blocks 25 is fixedly mounted
Spacing it is equal, the spacing of 11 right end of first gear of the rightmost side and 23 right end of graduated collar is L, 4 left side of inserted link with most
The distance of instruction 25 left end of block in left side is M, L=M, and the position that 1 top surface of cabinet corresponds to first gear 11 opens up through groove 26, the
The top of one gear 11 is located at the outside of cabinet 1 through corresponding through groove 26, is uniformly arranged angle index item simultaneously on dial 23
It is carved with corresponding angle value, alarm 34 is set outside cabinet 1, alarm 34 is connected with controller, first gear 11 and second
The outer diameter and the number of teeth of gear 12 are all the same.The present invention in use, user first by several first gears 11 rotate respectively with
The angle of machine, first gear 11 are rotated by the corresponding angular transducer 13 of engagement drive with second gear 12, angle sensor
Device 13 measures the angle that corresponding first gear 11 rotates and data-signal is transmitted to controller 15, controller 15 will from the right side to
The angle-data of left several first gears 11 rotation is transmitted to handheld terminal 32 and in viewing area by signal projector 18
It has been shown that, handheld terminal can for can only equipment, the combination of several 11 angle-datas of first gear from right to left such as mobile phone be
To open password of the invention, it is desirable to open the present invention, user protrudes into cylinder 3 into cabinet 1, carves when instruction block 25 is close
When scale 23, the angle value that needs rotating cylinder 3 to be directed toward the instruction block 25 on dial 23 and corresponding first gear
11 angle-data is identical, and inserted link 4 is overlapped with the through-hole 16 in the first gear 11 at this time, continues to protrude into cylinder 3, inserted link 4
Through-hole 16 in the first gear 11 is grasped until next instruction block 25 is close to dial 23 with above-mentioned principle
Make, can be successively through-hole 16 of the inserted link 4 in several first gears 11, inserted link 4 leads to corresponding during operation
Hole 16 is not overlapped, the right side face contact of 4 left end of inserted link and first gear 11, and inserted link 4 can be to the first gear 11 1 at this time
Thrust to the left, the thrust drive horizontal axis 5 to move to left, and the pressure value that pressure sensor 10 detects increases concurrent electric signals to control
Device processed, controller controls alarm equipment alarm at this time, and sends warning message to handheld terminal 32 by signal projector 18 simultaneously,
The owner of the invention can be received in time alert notice by handheld terminal 32 and make suitable action, and user passes through correct
When operation makes inserted link 4 sequentially pass through the through-hole 16 in different first gears 11, several are successively detected close to inductor 17
Approach signal simultaneously sends signal to controller, the control when controller receives all approach signals close to inductor 17
The closure of electromagnetic switch 20 is powered, and main frame 19 is powered and is switched at this time, after the completion of use, main frame shutdown, by column
Body 3 is pulled out to initial position, several first gears 11 are rotated random angle again by present invention power-off respectively, this
When open password of the invention and change, the configuration of the present invention is simple and ingenious, by shirtsleeve operation can arbitrarily it is random more
Change and open password of the invention, password every time will not be the same, and this design can make other people that can not open main frame and steal
Internal the file information, and energy and alarm are taken, the information security of computer, unfolding mode phase of the invention can be effectively protected
Traditional physical protection mode is more difficult to crack opening, it is more safe.
Specifically, stop collar 27 is fixed as shown, stop collar 27 is arranged in the inner end of circular hole 2 described in the present embodiment
It is mounted on cylinder 3, the USB jack being connected with main frame 19 is fixedly mounted outside cabinet 1.After the completion of user's use,
When cylinder 3 being pulled to reset, stop collar 27 can be drawn out completely to avoid cylinder 3, can play position-limiting action；USB jack conveniently makes
User copies the file in main frame, can not copy main frame by USB jack when main frame is not powered on
Interior file.
Specifically, as shown, circular hole 2 described in the present embodiment inner end on the downside of be equipped with vertical electric telescopic rod 28,
The fixed link lower end of electric telescopic rod 28 is fixed by the bracket with 1 inner wall of cabinet and connect, the telescopic rod upper end of electric telescopic rod 28
U-shaped bar 29 is fixedly mounted, the outer end side of cylinder 3 is embedded in Fingerprint Identification Unit 30, and Fingerprint Identification Unit 30 and electric telescopic rod 28 are equal
It is connected with controller.When the present invention is in initial unused state, electric telescopic rod 28 is in elongation state, U-shaped bar 29
Upper end be located at the left end of cylinder 3, the inside of U-shaped bar 29 is located at positioned at the inserted link 4 of lower part, at this time under the limit of U-shaped bar 29
Cylinder 3 cannot to protruding into and rotate inside cabinet 1, user using when need to carry out fingerprint knowledge by Fingerprint Identification Unit 30 first
Not, Fingerprint Identification Unit 30 is scanned the fingerprint of user, and when matching with the fingerprint of typing in advance, controller control is electronic
Telescopic rod 28 is shunk, and U-shaped bar moves down therewith, releases the limit to cylinder 3 and inserted link 4, is then carried out the operation of next step, is passed through
The design can further improve safety of the invention.
Further, as shown, instruction block 25 described in the present embodiment is made of noctilucence material, the quarter on dial 23
Degree item is noctilucence material.The present invention is operated by what the design also can be convenient in the bad environment of light.
Further, as shown, 1 interior bottom portion of cabinet described in the present embodiment is equipped with battery 31,1 side wall of cabinet
It is set to the connected charge port of battery 31, pressure sensor 10, close to inductor 17, angular transducer 13, signal projector
18, electromagnetic switch 20, controller 15 are connected with battery 31.It is only needed by the design through supply power supply line 21 and electromagnetism
Switch 20 is connected, it is possible to reduce the distribution of power supply line reduces installation difficulty.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (5)
1. a kind of computer network information safety device, it is characterised in that: including cabinet (1), cabinet (1) right side is close to upper end
Place opens up circular hole (2), is coupled lateral cylinder (3) in circular hole (2), and cylinder (3) in the interior transverse shifting of circular hole (2) and can turn
Dynamic, two sides are symmetrical arranged lateral inserted link (4) to the inner face of circular hole (2) up and down, are equipped with horizontal axis (5) on the left of the left end of inserted link (4),
Horizontal axis (5) left upper part is equipped with traverse rod (6), and traverse rod (6) is fixedly mounted on cabinet (1) inner top, and traverse rod (6) bottom is coupled
Sliding block (7), horizontal axis (5) are mounted on sliding block (7) bottom by axle bed (8), lead between sliding block (7) left end and the left end of traverse rod (5)
It crosses spring (9) to be fixedly connected, pressure sensor (10) are arranged in the left end of horizontal axis (5), the left end of horizontal axis (5) and pressure sensor
(10) it is engaged, the right part of horizontal axis (5) is set with several equally distributed first gears (11), first gear (11) by bearing
Downside be respectively provided with second gear (12), second gear (12) is fixedly mounted in the shaft of angular transducer (13), second
Gear (12) is engaged with corresponding first gear (11) to be cooperated, and angular transducer (13), which is fixed by the bracket, is mounted on mounting plate
(14) on, mounting plate (14) is fixedly mounted on cabinet (1) inner wall, controller (15) is fixedly mounted in cabinet (1), first gear
(11) two through-holes (16), two through-holes (16) on the same first gear (11) are symmetrically opened up on centered on central axes
The distance between axis is equal with the distance between two root cutting bar (4) axis, and inserted link (4) can be inserted into corresponding through-hole (16)
Interior, the left end side of one of through-hole (16) on the same first gear (11) is fixedly mounted close to inductor (17),
Signal projector (18) are fixedly mounted outside cabinet (1), main frame (19) are set in cabinet (1), fixed peace in cabinet (1)
It fills electromagnetic switch (20), one end of electromagnetic switch (20) is connected with one end of supply power supply line (21), and supply power supply line (21) is worn
The side wall of cabinet (1) is crossed, the other end of electromagnetic switch (20) is connected by connecting power supply line (22) with main frame (19), presses
Force snesor (10), close to inductor (17), angular transducer (13), signal projector (18), electromagnetic switch (20) with control
Device (15) processed is connected, and signal projector (18) is connected by wireless network with handheld terminal (32), and handheld terminal (32) is equipped with
Graduated collar (23) are fixedly mounted in the outer end of viewing area (33), circular hole (2), open up strip grooves (24), strip at the top of cylinder (3)
Several equally distributed instruction blocks (25), the spacing and adjacent two of two adjacent instructions block (25) are fixedly mounted in slot (24)
The spacing of a first gear (11) is equal, and first gear (11) right end and the spacing of graduated collar (23) right end of the rightmost side are
L, inserted link (4) left side are M, L=M at a distance from instruction block (25) left end of the leftmost side, and cabinet (1) top surface corresponds to first gear
(11) position opens up through groove (26), and the top of first gear (11) is located at the outer of cabinet (1) through corresponding through groove (26)
Portion is uniformly arranged angle index item on dial (23) and is carved with corresponding angle value, and alarm is arranged outside cabinet (1)
(34), alarm (34) is connected with controller, and first gear (11) and the outer diameter and the number of teeth of second gear (12) are all the same.
2. a kind of computer network information safety device according to claim 1, it is characterised in that: the circular hole (2)
Inner end stop collar (27) are set, stop collar (27) is fixedly mounted on cylinder (3), is fixedly mounted and calculates outside cabinet (1)
The connected USB jack of machine host (19).
3. a kind of computer network information safety device according to claim 1, it is characterised in that: the circular hole (2)
Inner end on the downside of be equipped with vertical electric telescopic rod (28), the fixed link lower end of electric telescopic rod (28) and cabinet (1) inner wall are logical
It crosses bracket to be fixedly connected, U-shaped bar (29), the outer end side of cylinder (3) is fixedly mounted in the telescopic rod upper end of electric telescopic rod (28)
It is embedded in Fingerprint Identification Unit (30), Fingerprint Identification Unit (30) and electric telescopic rod (28) are connected with controller.
4. a kind of computer network information safety device according to claim 1, it is characterised in that: the instruction block
(25) it is made of noctilucence material, the scale strip on dial (23) is noctilucence material.
5. a kind of computer network information safety device according to claim 1, it is characterised in that: the cabinet (1)
Interior bottom portion is equipped with battery (31), and cabinet (1) side wall is set to battery (31) connected charge port, pressure sensor
(10), close to inductor (17), angular transducer (13), signal projector (18), electromagnetic switch (20), controller (15) with
Battery (31) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910375957.7A CN110245528B (en) | 2019-05-07 | 2019-05-07 | Computer network information safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910375957.7A CN110245528B (en) | 2019-05-07 | 2019-05-07 | Computer network information safety device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110245528A true CN110245528A (en) | 2019-09-17 |
| CN110245528B CN110245528B (en) | 2020-12-15 |
Family
ID=67883778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910375957.7A Active CN110245528B (en) | 2019-05-07 | 2019-05-07 | Computer network information safety device |
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| Country | Link |
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| CN (1) | CN110245528B (en) |
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|---|---|---|---|---|
| US4266125A (en) * | 1978-12-21 | 1981-05-05 | Hewlett-Packard Company | Optical shaft angle encoder |
| CN2216567Y (en) * | 1994-03-22 | 1996-01-03 | 彭程恒 | Puzzle lock |
| DE19651771C1 (en) * | 1996-12-12 | 1998-04-16 | Trw Fahrzeugelektrik | Absolute value rotary sensor for motor vehicle steering angle |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110245528B (en) | 2020-12-15 |
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