CN111879232A - Rotation detection subassembly, unblock subassembly and key - Google Patents
Rotation detection subassembly, unblock subassembly and key Download PDFInfo
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- CN111879232A CN111879232A CN202010635546.XA CN202010635546A CN111879232A CN 111879232 A CN111879232 A CN 111879232A CN 202010635546 A CN202010635546 A CN 202010635546A CN 111879232 A CN111879232 A CN 111879232A
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- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 230000008901 benefit Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
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- 230000036632 reaction speed Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
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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
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B19/00—Keys; Accessories therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
- G01P13/04—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
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- Lock And Its Accessories (AREA)
Abstract
Rotate determine module, unblock subassembly and key, it includes to rotate determine module: the magnetic field sensing surface of the linear magnetic field sensor is opposite to the magnet; the magnet and the linear magnetic field sensor are relatively movable in the direction of extension of the magnet, and the linear magnetic field sensor outputs a signal proportional to the detected magnetic field strength when the relative position of the magnet and the linear magnetic field sensor changes. The rotation detection assembly is arranged on an unlocking sleeve and an unlocking rod of the unlocking assembly or the unlocking sleeve and the base support, and the unlocking assembly is arranged on a shell of the key. The invention utilizes the characteristics of different magnetic field strengths of different positions of the magnet, the linear magnetic field sensor outputs signals proportional to the detected magnetic strength of the magnetic field, and the information of the rotation angle, direction, position and the like can be determined according to the corresponding relation between the magnetic field strength and the output signals.
Description
Technical Field
The invention belongs to the technical field of computer keys, and particularly relates to a rotation detection assembly used on a computer key, and a corresponding unlocking assembly and a key.
Background
The single-rod unlocking computer key has the advantages of small structure and simplicity in operation, and is widely applied to an electric power anti-misoperation system and a petrochemical process anti-misoperation system. Along with the development of the anti-misoperation system to the direction of digitization and intellectualization, the equipment information required to be collected by the anti-misoperation system is more and more, such as the rotation angle, the rotation direction and the rotation position of a key in the unlocking process. The unlocking and locking operation process of the single-rod unlocking computer key is a rapid rotation process, and a detection device aiming at the process needs to meet the following design requirements: 1) the reaction speed is high, and if the reaction speed is low, the rotating direction and angle can not be timely and accurately detected, so that information collection failure can be caused, and misoperation can be caused; 2) simple structure, small and exquisite because detection device sets up inside the computer key, receives the restriction of computer key inner space, and the detection device that the structure is complicated, the size is great can lead to the size increase of unblock subassembly, does not accord with the small and exquisite light requirement of computer key.
Disclosure of Invention
The invention aims to provide a rotation detection assembly, an unlocking assembly and a key, which have the advantages of simple structure, high detection precision and small size.
In order to achieve the purpose, the invention adopts the following technical solutions:
a rotation detection assembly comprising: the magnetic field sensing surface of the linear magnetic field sensor is opposite to the magnet; the magnet and the linear magnetic field sensor are relatively movable in the direction of extension of the magnet, and the linear magnetic field sensor outputs a signal proportional to the detected magnetic field strength as the relative position of the magnet and the linear magnetic field sensor changes.
Further, the linear magnetic field sensor is movable relative to the magnet between a first position at the start of the relative movement and a second position at the end of the relative movement.
Further, the first position is a position where the linear magnetic field sensor faces a first magnetic pole of the magnet, and the second position is a position where the linear magnetic field sensor faces a second magnetic pole of the magnet.
Further, the magnet is arc-shaped magnetic steel.
Further, the linear magnetic field sensor is a linear hall sensor.
The invention also provides an unlocking assembly comprising: the unlocking rod and the unlocking sleeve are sleeved outside the unlocking rod, the unlocking rod and the unlocking sleeve can rotate relatively around the axis of the unlocking rod, the unlocking assembly is arranged on a base, and the unlocking rod is connected with the base; the rotation detection assembly is arranged between the unlocking sleeve and the base or between the unlocking sleeve and the unlocking rod.
Further, the magnet is arranged at the bottom of the unlocking sleeve, and the linear magnetic field sensor is arranged on the base.
The invention also provides a key which comprises a shell, an unlocking assembly arranged on the shell and a control unit plate group arranged in the shell, wherein the unlocking assembly is the unlocking assembly, the unlocking assembly is connected with the shell through the base, and the rotation detection assembly is electrically connected with the control unit plate group and outputs detection signals to the control unit plate group.
Furthermore, the control unit board set comprises an MCU module arranged on the unit board, an RFID code reading module and a unlocking control module which are connected with the MCU module, and a power supply module for supplying power to the modules, and the rotation detection assembly outputs detection signals to the MCU module.
Furthermore, a key is arranged on the shell, the control unit board group comprises a key module connected with the key, and the key module is connected with the MCU module; and/or a code reading coil is arranged on the base, the control unit board group comprises a code reading module connected with the code reading coil, and the code reading module is connected with the MCU module; and/or the control unit board group also comprises an acousto-optic indication module, and the acousto-optic indication module is connected with the MCU module.
According to the technical scheme, the rotation angle between objects which move relatively is detected by the magnet and the linear magnetic field sensor, the characteristic that the magnetic field intensity at different positions of the magnet is different is utilized, the linear magnetic field sensor can output signals proportional to the detected magnetic intensity of the magnetic field when detecting the magnetic field intensity, and the information such as the rotation angle, the rotation direction and the like can be determined according to the corresponding relation between the magnetic field intensity and the output signals. In specific technical scheme, adopt linear hall sensor and arc magnet steel as rotating detection part, except having that reaction rate is fast, stable advantage of signal output, adopt linear hall sensor and arc magnet steel as rotating detection part, the material is purchased easily, and the price is low, but effective control product cost.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.
FIG. 1 is a schematic structural view of a key according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic structural diagram of an unlocking assembly according to an embodiment of the present invention;
FIG. 4 is an exploded view of an unlock assembly according to an embodiment of the present invention;
FIG. 5 is a schematic view of an embodiment of the present invention with magnets disposed on the unlocking sleeve;
FIG. 6 is a block circuit diagram of a control unit according to an embodiment of the present invention;
fig. 7 is a graph of the linear relationship between the output voltage and the magnetic field strength of a linear hall device in accordance with an embodiment of the present invention.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Detailed Description
In order to make the aforementioned and other objects, features and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the key of the present embodiment includes a housing 1, an unlocking member 2 partially disposed in the housing 1, a rotation detecting member 3 disposed in the housing 1, and a control unit plate group 4 disposed in the housing 1.
The unlocking assembly 2 of the embodiment is arranged at the top of the shell 1, and the bottom of the unlocking assembly 2 is positioned in the shell 1. Referring to fig. 3 and 4, the unlocking assembly 2 of the present embodiment includes an unlocking rod 2-1 and an unlocking sleeve 2-2, the unlocking sleeve 2-2 is sleeved outside the unlocking rod 2-1, and the unlocking sleeve 2-2 and the unlocking rod 2-1 can rotate relatively around the axis of the unlocking rod 2-1. The unlocking assembly 2 is connected to the housing 1 through a base 5. The base 5 is arranged in the shell 1 and fixed with the shell 1 through fasteners such as screws, and the base 5 plays a role in fixing and supporting the unlocking assembly 2. The unlocking rod 2-1 is connected with the base 5 through fasteners such as bolts and the like, and the unlocking rod 2-1 is fixedly connected with the base 5, namely the unlocking rod 2-1 and the base 5 cannot move relatively. When a key is used for unlocking and locking, the unlocking rod 2-1 and the unlocking sleeve 2-2 extend into the lock, the unlocking sleeve 2-2 is in buckling fit with a lock cylinder of the lock, when the key is rotated, the unlocking rod 2-1 connected with the shell 1 of the key through the base 5 can rotate along with the key, so that the lock can be unlocked or locked, the unlocking sleeve 2-2 is clamped by the lock cylinder and cannot rotate, and relative rotation can be generated between the unlocking sleeve 2-2 and the unlocking rod 2-1. A code reading coil 6 is arranged on the base 5, and the code reading coil 6 is electrically connected with the control unit plate group 4. The code reading coil 6 of the present embodiment is an RFID code reading coil.
As shown in fig. 2 and 4, the rotation detecting assembly 3 of the present embodiment includes a magnet 3-1 and a linear magnetic field sensor 3-2, the linear magnetic field sensor 3-2 can provide an output signal proportional to the detected magnetic field strength, the linear magnetic field sensor 3-2 of the present embodiment employs a linear hall sensor, the magnet 3-1 is a magnet with a length, the magnet 3-1 of the present embodiment is a section of arc-shaped magnetic steel, the linear hall sensor is used for detecting the magnetic field strength of the magnetic steel, when the relative position between the linear Hall sensor and the magnetic steel is changed, the magnetic field intensity detected by the linear Hall sensor changes along with the change of the position, and outputs a signal proportional to the magnetic field strength (fig. 7), and detects the rotation angle and the rotation direction of the key using the correspondence between the detected magnetic field strength and the position between the linear magnetic field sensor and the magnet.
Since relative rotation between the unlocking lever 2-1 (base) and the unlocking sleeve 2-2 occurs during unlocking, the rotation detecting assembly 3 may be provided between the unlocking sleeve 2-2 and the base 2-1 or between the unlocking sleeve 2-2 and the unlocking lever 2-1. In order to reduce the assembly difficulty of the components, the present embodiment provides the angle detection device 3 between the unlocking sleeve 2-2 and the base 5. As shown in FIG. 5, a magnet receiving groove 2-2a for receiving the magnet 3-1 is formed at the bottom of the unlocking sleeve 2-2, and the magnet 3-1 is disposed in the magnet receiving groove 2-2 a. As shown in fig. 4, the linear magnetic field sensor 3-2 is disposed on a circuit board 3-3, the circuit board 3-3 is disposed on the base 5 by means of gluing or screwing, and the magnetic field sensing surface of the linear magnetic field sensor 3-2 is opposite to the magnet 3-1. Since the linear magnetic field sensor 3-2 is connected to the control unit board group 4 through a signal line, in view of the operability of the assembly process and the service life of the components, the present embodiment arranges the magnet 3-1 on the unlocking sleeve 2-2, arranges the linear magnetic field sensor 3-2 on the base 5 through the circuit board 3-3, and uses the linear magnetic field sensor 3-2 as a relatively fixed component. When the unlocking operation is performed, the base 5 rotates along with the key, so that the unlocking rod 2-1 connected with the base 5 and the linear magnetic field sensor 3-2 arranged on the base 5 rotate synchronously, the unlocking sleeve 2-2 is clamped by the lock cylinder and cannot rotate, the unlocking sleeve 2-2 and the magnet 3-1 arranged in the arc-shaped groove at the bottom of the unlocking sleeve 2-2 are relatively static, and the relative position (distance) between the magnet 3-1 and the linear magnetic field sensor 3-2 is changed due to the relative rotation between the unlocking rod 2-1 (base) and the unlocking sleeve 2-2.
As shown in fig. 6, the control cell board assembly 4 of the present embodiment includes an MCU module, an RFID code reading module, an unlocking control module, a key module, an audio-visual indication module, and a power module for supplying power to the above modules, which are disposed on the cell board. The MCU module is used for completing analysis processing and logic judgment of all data signals, outputting control signals and state indication, and is connected with the RFID code reading module, the unlocking control module, the key module and the sound and light indication module and is connected with the rotation detection assembly 3 through electric signals, when the linear magnetic field sensor 3-2 and the magnet 3-1 rotate relatively, the linear magnetic field sensor 3-2 can detect magnetic field strength values of different positions of the magnet 3-1 and output corresponding voltage values to the MCU module, and the MCU module judges the rotation angle and the rotation direction of the computer key through a preset linear corresponding relation.
And the RFID code reading module is connected with the RFID code reading coil and is used for reading the value of the RFID code on the lockset. The unlocking control module is connected with the unlocking mechanism and used for receiving the control signal output by the MCU module to complete the control of the unlocking component. The key module is connected with a button 7 arranged on the shell 1 and used for collecting operation information such as startup, shutdown and awakening and outputting the operation information to the MCU module. The acousto-optic indication module is used for finishing the functions of unlocking and locking operation process indication and computer key battery electric quantity indication. The power supply module comprises a rechargeable lithium battery, a charging management circuit and a power supply conversion circuit, wherein the charging management circuit is used for managing the charging of the rechargeable lithium battery, and the power supply conversion circuit converts the voltage of the rechargeable lithium battery into working voltage suitable for each functional module.
The working principle and process of the rotation detecting assembly of the present invention are further explained as follows:
the unlocking mechanism is characterized in that the position of the unlocking assembly 2 of the computer key when the unlocking assembly is inserted into a lock hole of the lock is taken as an initial position (a first position), after the key is inserted, the code reading coil 6 reads an RFID code value on the lock and transmits the RFID code value to the MCU module through the RFID code reading module, the MCU module judges whether the RFID code value of the lock is an authorized code value, if the RFID code value is the authorized code value, the MCU module outputs a control signal to the unlocking mechanism through the unlocking control module, and the unlocking mechanism controls the unlocking assembly 2 to enable the unlocking sleeve 2-2 and the unlocking rod 2-1.
Taking the structure of the embodiment as an example, in the unlocking operation process of the computer key, the unlocking sleeve 2-2 is static relative to the lock, the linear magnetic field sensor 3-2 (linear hall sensor) can rotate along with the unlocking rod 2-1, namely, the linear magnetic field sensor 3-2 can rotate relative to the lock; at an initial position, the linear magnetic field sensor 3-2 is positioned at a position which is just aligned with an S pole (a first magnetic pole) of the magnet 3-1 (arc-shaped magnetic steel), the magnetic field intensity sensed by the linear magnetic field sensor 3-2 is strongest at the moment, the voltage fed back to the MCU module by the linear magnetic field sensor 3-2 is the largest, and the rotation angle is 0 degree at the initial position according to a preset linear corresponding relation;
when the linear magnetic field sensor is rotated clockwise to unlock, the linear magnetic field sensor 3-2 gradually turns to the middle point position of the magnet 3-1, the magnetic field intensity sensed by the linear magnetic field sensor 3-2 is gradually weakened, the voltage fed back to the MCU module by the linear magnetic field sensor 3-2 is also gradually reduced, when the linear magnetic field sensor 3-2 rotates to the middle point position of the magnet 3-1, the magnetic field intensity sensed by the linear magnetic field sensor 3-2 is 0, the voltage fed back to the MCU module by the linear magnetic field sensor 3-2 is half of the working voltage of the MCU module, and the rotation angle is 45 degrees at the moment according to the preset linear corresponding relation; the linear magnetic field sensor 3-2 continuously turns to the N pole (second magnetic pole) of the magnet 3-1 in the clockwise direction, the magnetic field intensity sensed by the linear magnetic field sensor 3-2 gradually becomes stronger, but the magnetic field polarity is opposite, so the voltage fed back to the MCU module by the linear magnetic field sensor 3-2 continuously becomes smaller, when the linear magnetic field sensor 3-2 turns to the N pole which is aligned with the magnet 3-1, the voltage fed back to the MCU module by the linear magnetic field sensor 3-2 is minimum, according to the preset linear corresponding relation, the rotation angle is 90 degrees when the unlocking position (second position) is realized, the linear magnetic field sensor 3-2 rotates 90 degrees in the clockwise direction, the unlocking angle set by the lock can be reached, and the lock can be unlocked at the moment.
When the lock is unlocked by rotating clockwise, the voltage fed back to the MCU module by the linear magnetic field sensor 3-2 is gradually reduced from the maximum value to the minimum value; when the rotation is locked in the anticlockwise direction, the voltage fed back to the MCU module by the linear magnetic field sensor 3-2 is gradually increased from the minimum value to the maximum value; the change trend of the voltage fed back to the MCU module by the linear magnetic field sensor 3-2 can not only detect the rotation angle, but also detect the rotation direction, and accordingly, the unlocking operation or the locking operation is judged.
The foregoing embodiment has been described with the example that the angle range of the rotation of the computer key unlocking operation is from 0 degree to 90 degrees, but in other embodiments, the angle range of the rotation of the computer key unlocking operation may be other angle values, and when the angle range of the rotation of the computer key unlocking operation is changed, the range of the relative rotation between the magnet and the linear magnetic field sensor is also changed accordingly, but the linear output proportional to the magnetic field intensity is not affected.
Of course, the technical concept of the present invention is not limited to the above embodiments, and many different specific schemes can be obtained according to the concept of the present invention, for example, the magnet may be an arc or a bar, but the arc magnet better conforms to the relative motion track of the linear magnetic field sensor during the rotation process, which is more favorable for ensuring the accuracy of the detection result; in the case of a suitable space, the linear magnetic field sensor may also be provided on the peripheral wall of the lock release lever, opposite the magnet; or the linear magnetic field sensor is arranged on the unlocking sleeve, and the magnet is arranged on the base or the unlocking rod; in addition, the first position and the second position do not necessarily require that the linear magnetic field sensor is exactly aligned with the first magnetic pole and the second magnetic pole of the magnet, and as long as the output value corresponding to the linear magnetic field sensor is determined according to the magnetic field intensity at the first position and the second position, a linear corresponding relationship is established, and the rotation angle and the direction can also be determined according to the output of the linear magnetic field sensor; such modifications and equivalents are intended to be included within the scope of the present invention.
Claims (10)
1. Rotation detection subassembly, its characterized in that includes:
the magnetic field sensing surface of the linear magnetic field sensor is opposite to the magnet;
the magnet and the linear magnetic field sensor are relatively movable in the direction of extension of the magnet, and the linear magnetic field sensor outputs a signal proportional to the detected magnetic field strength as the relative position of the magnet and the linear magnetic field sensor changes.
2. The rotation detection assembly of claim 1, wherein: the linear magnetic field sensor is movable relative to the magnet between a first position at the beginning of the relative movement and a second position at the end of the relative movement.
3. The rotation detection assembly of claim 2, wherein: the first position is a position when the linear magnetic field sensor faces a first magnetic pole of the magnet, and the second position is a position when the linear magnetic field sensor faces a second magnetic pole of the magnet.
4. The rotation detection assembly of claim 1, wherein: the magnet is arc-shaped magnetic steel.
5. The rotation detection assembly of claim 1, wherein: the linear magnetic field sensor is a linear Hall sensor.
6. An unlocking assembly, comprising: the unlocking rod and the unlocking sleeve are sleeved outside the unlocking rod, the unlocking rod and the unlocking sleeve can rotate relatively around the axis of the unlocking rod, the unlocking assembly is arranged on a base, and the unlocking rod is connected with the base;
a rotation detection assembly as claimed in any one of claims 1 to 5 provided between the unlocking sleeve and the base or between the unlocking sleeve and the unlocking lever.
7. The unlocking assembly of claim 6, wherein: the magnet set up in unlocking sleeve bottom, linear magnetic field sensor set up in on the base.
8. The key, including the casing, set up in unblock subassembly on the casing, set up in the control unit group in the casing, its characterized in that: the unlocking assembly is the unlocking assembly of claim 6 or 7, the unlocking assembly is connected with the shell through the base, and the rotation detection assembly is electrically connected with the control unit plate set and outputs a detection signal to the control unit plate set.
9. The key of claim 8, wherein: the control unit board set comprises an MCU module arranged on the unit board, an RFID code reading module and an unlocking control module which are connected with the MCU module, and a power supply module for supplying power to the modules, wherein the rotation detection assembly outputs detection signals to the MCU module.
10. The key of claim 9, wherein: the shell is provided with a key, the control unit board group comprises a key module connected with the key, and the key module is connected with the MCU module; and/or a code reading coil is arranged on the base, the control unit board group comprises a code reading module connected with the code reading coil, and the code reading module is connected with the MCU module; and/or the control unit board group also comprises an acousto-optic indication module, and the acousto-optic indication module is connected with the MCU module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010635546.XA CN111879232A (en) | 2020-07-03 | 2020-07-03 | Rotation detection subassembly, unblock subassembly and key |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010635546.XA CN111879232A (en) | 2020-07-03 | 2020-07-03 | Rotation detection subassembly, unblock subassembly and key |
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| CN111879232A true CN111879232A (en) | 2020-11-03 |
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| CN202010635546.XA Pending CN111879232A (en) | 2020-07-03 | 2020-07-03 | Rotation detection subassembly, unblock subassembly and key |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116080800A (en) * | 2019-04-19 | 2023-05-09 | 莱夫特公司 | System and method for a lock equipped with magnets |
| CN116311608A (en) * | 2023-02-23 | 2023-06-23 | 珠海理想科技有限公司 | An intelligent key, an intelligent lock system and a method for judging the opening and closing state of a lock |
| US12546143B2 (en) | 2023-03-06 | 2026-02-10 | Lyft, Inc. | Systems and methods for magnet-equipped locks |
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| US20180259595A1 (en) * | 2013-02-20 | 2018-09-13 | D & D Group Pty Ltd | Sensor configuration for a latch assembly |
| CN210290940U (en) * | 2019-06-14 | 2020-04-10 | 佛山市顺德区美的饮水机制造有限公司 | Faucet and water treatment machine |
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| CN204386283U (en) * | 2014-12-26 | 2015-06-10 | 珠海优特电力科技股份有限公司 | unlock key |
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| CN116080800A (en) * | 2019-04-19 | 2023-05-09 | 莱夫特公司 | System and method for a lock equipped with magnets |
| CN116311608A (en) * | 2023-02-23 | 2023-06-23 | 珠海理想科技有限公司 | An intelligent key, an intelligent lock system and a method for judging the opening and closing state of a lock |
| US12546143B2 (en) | 2023-03-06 | 2026-02-10 | Lyft, Inc. | Systems and methods for magnet-equipped locks |
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Application publication date: 20201103 |