CN108819566B - Intelligent pen and intelligent pen control method - Google Patents
Intelligent pen and intelligent pen control method Download PDFInfo
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- CN108819566B CN108819566B CN201810875617.6A CN201810875617A CN108819566B CN 108819566 B CN108819566 B CN 108819566B CN 201810875617 A CN201810875617 A CN 201810875617A CN 108819566 B CN108819566 B CN 108819566B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K27/00—Multiple-point writing implements, e.g. multicolour; Combinations of writing implements
Abstract
The invention discloses an intelligent pen which comprises a pen holder, a plurality of pen points, a sensing unit, a control unit and an actuating unit, wherein the pen holder is provided with pen points; the sensing unit is used for detecting a writing object of the smart pen and forming a detection signal; the control unit is used for determining the object type of the writing object according to the detection signal, forming a control signal corresponding to the object type and transmitting the control signal to the actuating unit; the actuating unit is used for enabling the pen point corresponding to the writing object to move to the pen point according to the control signal.
Description
Technical Field
The invention relates to the field of intelligent products. And more particularly, to a smart pen and a smart pen control method.
Background
With the development of touch display screens, more and more electronic devices have a touch function, and a user can perform related operations on the touch display screen through a touch pen, and when the user needs to write on white paper with a writing pen, the user needs to put down the touch pen, replace the writing pen and write on the white paper. Frequent switching of the stylus and the writing pen causes inconvenience in operation of the user, and user experience is reduced.
Disclosure of Invention
The invention aims to provide an intelligent pen, which can automatically switch pen points under different writing object conditions, simplify user operation and improve user experience. The invention also aims to provide a control method of the intelligent pen.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention discloses an intelligent pen which comprises a pen holder, a plurality of pen points, a sensing unit, a control unit and an actuating unit, wherein the pen holder is provided with pen points;
the sensing unit is used for detecting a writing object of the smart pen and forming a detection signal;
the control unit is used for determining the object type of the writing object according to the detection signal, forming a control signal corresponding to the object type and transmitting the control signal to the actuating unit;
the actuating unit is used for enabling the pen point corresponding to the writing object to move to the pen point according to the control signal.
Preferably, the sensing unit comprises a light emitting element and a light sensing component;
the light sensing assembly receives reflected light which is emitted by the light emitting element and reflected by the writing object and forms a detection signal according to the reflected light, and the detection signal has light intensity information based on the writing object.
Preferably, a plurality of standard light intensity ranges corresponding to writing objects of different object types are preset in the control unit;
the control unit is used for determining the object type of the writing object according to the standard light intensity range in which the light intensity information of the detection signal falls.
Preferably, the smart pen further comprises a power supply unit, wherein the power supply unit comprises a battery assembly electrically connected with each unit respectively;
the power supply unit further comprises a wireless power supply assembly for charging the battery assembly, and the wireless power supply assembly generates charging current to charge the battery assembly under the action of an external wireless charging assembly; and/or
The power supply unit further comprises a charging interface which is arranged on the penholder and electrically connected with the battery pack, and when the charging interface is electrically connected with an external power supply, the external power supply charges the battery pack.
Preferably, the smart pen further comprises a power sensing unit for detecting the power of the battery assembly;
the electric quantity sensing unit comprises a current detection resistor arranged at the current output end of the battery assembly and coulombmeters arranged at two ends of the current detection resistor;
the control unit is used for receiving the output information of the coulometer and processing the output information to obtain the electric quantity of the battery pack.
Preferably, the plurality of pen points comprise at least a stylus pen for touching the display screen and a writing pen for writing paper.
Preferably, the actuating unit comprises a motor and a gear electrically connected with the control unit;
the motor rotates according to the control signal to drive the gear to rotate, and the gear rotates to drive the plurality of pen points to move, so that the pen points corresponding to the writing objects move to the pen point positions.
Preferably, the smart pen further comprises a position sensor;
the position sensor is used for forming a position detection signal containing pen point position information, the control unit is used for determining the position of a pen point corresponding to the writing object based on the position detection signal, and when the position of the pen point reaches the pen point, the actuating unit is controlled to stop.
Preferably, the position sensor is a hall sensor;
the control unit is used for determining the rotating position of the motor based on the position detection signal, and when the rotating position of the motor reaches a preset position, the pen point corresponding to the writing object is determined to reach the pen point, and the actuating unit is controlled to stop.
The invention also discloses a control method of the intelligent pen, which comprises the following steps
Detecting a writing object of the smart pen and forming a detection signal;
determining the object type of the writing object according to the detection signal, and forming a control signal corresponding to the object type;
and moving the pen point corresponding to the writing object to the pen point according to the control signal.
The invention has the following beneficial effects:
the intelligent pen is provided with the plurality of pen points, the sensing unit, the control unit and the actuating unit, the sensing unit is used for detecting a writing object of the intelligent pen to form a detection signal, the control unit is used for acquiring and processing the detection signal to determine the object type of the writing object, for example, whether the writing object of a user is a touch display screen or common paper can be determined, the control signal is sent to the actuating unit according to the difference of the writing object to control the actuating unit to drive the pen point corresponding to the writing object to move to the pen point, and the user can realize switching between touch operation and normal writing without changing a pen in the hand. According to the invention, the automatic switching of the pen points in the intelligent pen is realized through an active detection technology, so that a user can continuously operate on a plurality of different writing objects without switching, the user operation is simplified, and the efficiency is improved.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 shows a schematic diagram of a smart pen according to one embodiment of the present invention.
Fig. 2 shows a schematic diagram of a sensing unit of a smart pen in a specific embodiment of the invention.
Fig. 3 shows a schematic diagram of a power supply unit of the smart pen in an embodiment of the invention.
Fig. 4 shows a schematic diagram of a power sensing unit of the smart pen in an embodiment of the invention.
Fig. 5 shows a schematic view of an actuation unit of a smart pen in a specific embodiment of the invention.
FIG. 6 is a flow chart illustrating a method for controlling a smart pen according to an embodiment of the present invention.
Reference numerals:
1. the pen comprises a pen holder, 2, a pen tip, 3, a pen head, 4, a sensing unit, 5, a control unit, 6, an actuating unit, 41, a light-emitting element, 42, a light sensing assembly, 421, a light receiving and amplifying module, 422, a light energy detection module, 7, a power supply unit, 71, a battery assembly, 72, a wireless power supply assembly, 73, a charging interface, 741, a battery, 742, a battery management module, 8, an electric quantity sensing unit, 81, a current detection resistor, 82, a coulometer, 9, a warning unit, 91, a micro-speaker, 61, a motor, 62, a gear, 10 and a position sensor.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
Aiming at the problem that in the prior art, different pens need to be switched to switch different writing objects such as a touch display screen, writing paper and the like, so that inconvenience is brought.
In accordance with one aspect of the present invention, as shown in FIG. 1, a specific embodiment of a smart pen is disclosed. In the present embodiment, the smart pen includes a barrel 1 formed with a pen tip 2, a plurality of pen tips 3 provided in the barrel 1 corresponding to different types of writing objects, a sensing unit 4, a control unit 5, and an actuating unit 6.
Wherein the sensing unit 4 is used for detecting a writing object of the smart pen and forming a detection signal. The control unit 5 is used for determining the object type of the writing object according to the detection signal, forming a control signal corresponding to the object type and transmitting the control signal to the actuating unit 6. The actuating unit 6 is used for driving the pen point 3 corresponding to the writing object to move to the pen point 2 according to the control signal. According to the invention, the sensing unit is used for detecting the writing object of the intelligent pen to form a detection signal, the control unit 5 is used for acquiring and processing the detection signal, the object type of the writing object can be determined, the control signal is sent to the actuating unit 6 according to the difference of the writing object to control the actuating unit 6 to drive the pen point 3 corresponding to the writing object to move to the pen point 2, the intelligent pen can automatically switch different pen points according to the difference of the writing object, so that a user can realize seamless switching between different writing objects without changing a pen in hand, continuous operation is carried out, the operation process of the user is simplified, the user can use the intelligent pen more conveniently, the time is saved, and the user experience is good.
Preferably, the Control Unit 5 may adopt a low power consumption Micro Control Unit (MCU), and more preferably, may select a chip with a power supply voltage of 3.3V or less, so as to reduce power consumption and prolong the service time of the smart pen during single charging.
Preferably, as shown in fig. 2, the sensing unit 4 may include a light emitting element 41 and a light sensing assembly 42. The light emitting element 41 can be electrically connected to the control unit 5, and emits light under the control of the control unit 5, and the light emitted by the light emitting element 41 can be irradiated onto the writing object of the user through the opening of the pen tip 2 and reflected.
The light sensing member 42 receives the reflected light emitted from the light emitting element 41 and reflected by the writing object and forms a detection signal having light intensity information based on the writing object based on the reflected light.
As a preferred embodiment, the light sensing assembly 42 may include a light receiving amplifying module 421 and a light energy detecting module 422, where the light receiving amplifying module 421 is configured to amplify the received reflected light signal, and the light energy detecting module 422 is configured to detect the amplified light signal to obtain a detection signal, so as to improve the detection accuracy of the light intensity of the reflected light.
Preferably, the light emitting element 41 may be disposed at a position corresponding to the center of the pen holder 1 in the pen holder 1, the light emitting element 41 in the pen holder 1 may emit a light signal under the control of the control unit 5, different writing objects of the smart pen are formed of different materials, such as white paper and a touch display screen, light reflection coefficients of the different writing objects are different, and light emitted by the light emitting element 41 is reflected on the surface of the writing object. Further, the light sensor unit 42 obtains reflected light formed by reflection on the surface of the writing object, and forms a detection signal according to the reflected light, and the detection signal corresponds to the light intensity of the reflected light, so that the control unit 5 can process the detection signal, determine the writing object operated by the user, and switch the pen point 3.
The light beam emitted from the light emitting element 41 is close to normal incidence (the incident angle θ is approximately equal to 0), and the reflectance calculation formula is: r is (n1-n2) ^2/(n1+ n2) ^ 2. Where n1, n2 are the true indices of refraction (i.e., indices of refraction relative to vacuum) of the two media, respectively. The intensity of light reflected by different materials is obtained by testing the refractive indexes of the writing paper and the touch display screen, so that different writing objects are distinguished.
In a preferred embodiment, a plurality of standard light intensity ranges corresponding to different object types can be preset in the control unit 5, the control unit 5 can process the detection signal to obtain light intensity information, and the standard light intensity range in which the light intensity information falls is determined, so that the object type of the writing object can be determined. That is, the light intensity information is compared with the plurality of standard light intensity ranges, and one of the standard light intensity ranges containing the light intensity information is determined.
For example, taking the example of implementing the stylus 3 between the touch screen and the white paper, the non-specular surface is dependent on factors such as color, temperature, light properties, etc., depending on the reflectivity of the opaque medium, e.g., specular surface, being 100%. The touch display screen is outside the reflection range of white paper at luminous and non-luminous homoenergetic to the material of glass is very big with the paper material difference, through experimental test means, acquires the reflection difference of two kinds of materials very easily. Therefore, when the pen point 3 is switched between the touch display screen and the white paper, the material of the interface is judged according to the intensity of the reflected light, so that the type of the material is rapidly identified, and the switching of the pen point 3 is convenient to carry out in real time.
Assuming that through experimental tests, the light intensity information of the light reflection data acquired on the two different object types is [ a1, a2 … an ], [ b1, b2, … bn ], wherein assuming that the data have respective value ranges, when the acquired reflection light data fall in different light intensity range intervals, the object type of the writing object is acquired according to the data selection range, and then the control unit 5 controls the actuating unit 6 to automatically drive the corresponding pen point 3 to move to the pen point 2, so that the pen point 3 can be automatically switched when different writing objects are written.
Preferably, as shown in fig. 3, the smart pen further includes a power supply unit 7, where the power supply unit 7 may supply power in a wireless manner, or may also supply power in a wired manner, and more preferably, the power supply unit may also supply power in a wireless and wired manner as in this embodiment, where a double arrow in the figure indicates that the wireless charging assembly and the wireless power supply assembly 72 perform energy exchange in a wireless manner, and the wireless charging assembly provides electric energy for the wireless power supply assembly 72 in a wireless manner. The power supply unit 7 may include a battery assembly 71 electrically connected to each unit, respectively.
In the wireless power supply, the power supply unit further includes a wireless power supply unit 72 for charging the battery unit 71. The wireless power supply assembly 72 generates a charging current to charge the battery assembly 71 under the action of an external wireless charging assembly.
In the wired power supply, the power supply unit further includes a wireless power supply unit 72 for charging the battery unit 71. The charging assembly comprises a battery assembly 71 electrically connected with each unit and a charging interface 73 arranged on the penholder 1 and electrically connected with the battery assembly 71, and when the charging interface 73 is electrically connected with an external power supply, the external power supply charges the battery assembly 71.
The battery assembly 71 may include a battery 741 and a battery management module 742. Optionally, the battery 741 may be a storage battery or a super capacitor.
Further, preferably, as shown in fig. 4, the smart pen may further include a power sensing unit 8 for detecting the power of the battery assembly 71. The power sensing unit 8 includes a current detection resistor 81 provided at a current output terminal of the battery assembly, and a coulometer 82 provided at both ends of the current detection resistor 81. Specifically, in this embodiment, the current detection resistor 81 is electrically connected to the current output terminal of the battery 741, and the output current of the battery 741 can be calculated by detecting the voltage drop across the current detection resistor 81. In practical applications, the current detection resistor 81 may be disposed at another position of the battery pack output circuit, and the electric quantity of the battery 741 may be calculated by the resistor 81.
The control unit 5 is used for receiving the output information of the coulometer 82 and processing the output information to obtain the electric quantity of the battery assembly 71. The electric quantity of the battery 741 is detected by the electric quantity sensing unit 8, when the electric quantity of the electric quantity is too low, the information that the electric quantity of the battery 741 is too low is fed back to a user through the warning unit 9, the user is reminded to charge the smart pen, the smart pen is protected, and the service life of the smart pen is prolonged.
In an optional embodiment, the control unit 5 may further record a relationship between the number of times the smart pen is charged and the number of times the pen point 3 is switched, so as to obtain the number of times the smart pen is charged and available for switching once, so that when it is detected that the pen point 3 of the smart pen is switched for a certain number of times, the power sensing unit 8 may perform power detection on the power supply unit 7 without continuous detection, thereby saving power to the maximum extent.
In an alternative embodiment, the control unit 5 can also be used to stop the process of switching the nib 3, for example, when the control unit 5 detects, through the battery 741, that the charge of the power supply unit 7 is lower than a preset low charge, the control unit 4 and the actuation unit 6 are stopped. In other embodiments, a timer, a button, or other system setting may be used to control the sensing unit 4 and the actuating unit 6 to stop working, so as to protect the smart pen from the system.
Further, preferably, the smart pen further comprises a warning unit 9 electrically connected with the control unit 5. The warning unit 9 may be a micro speaker 91 or a buzzer or the like which can remind the user. The control unit 5 may perform a voice warning to the user through the micro speaker 91 or vibrate a warning to the user through a buzzer when the amount of electricity of the battery pack 71 is less than a preset amount of electricity.
Preferably, as shown in fig. 5, in the present embodiment, the actuating unit 6 may include a motor 61 and a gear 62 electrically connected to the control unit 5.
The motor 61 controls the gear 62 to rotate according to the control signal, the gear 62 rotates to drive the plurality of pen points 3 to move, so that the pen points 3 corresponding to the control signal move to the pen point 2, and the pen points 3 are exposed outside the smart pen from the pen point, so that a user can use the smart pen conveniently. Wherein, the rotation mode of motor 61 can include clockwise rotation and anticlockwise rotation, can make different nib 3 roll out to nib 2 through the different direction of rotation and the rotation angle of motor 61 to realize the switching of different nibs 2. A power driving circuit is preferably disposed between the control unit 5 and the motor 61 for amplifying the power of the electrical signal so that the micro motor 61 can be normally started, and the control unit 5 controls the motor 61 to rotate the specific pen tip 3 to the pen tip 2.
As a preferable implementation manner, the smart pen in this embodiment further includes a position sensor 10, the position sensor 10 is configured to form a position detection signal containing information about the position of the pen tip 3, the control unit 5 is configured to determine the position of the pen tip 3 corresponding to the writing object based on the position detection signal of the position sensor 10, and when the position of the pen tip 3 reaches the pen tip 2, the actuating unit 6 is controlled to stop.
Preferably, the position sensor 10 may be a hall sensor, the hall sensor may detect the rotation position of the motor 61, the control unit 5 may determine whether the pen tip 3 reaches the pen tip 2 according to the rotation position of the motor 61, and when it is determined that the motor 61 rotates to a predetermined position, and it is determined that the specific pen tip 3 has reached the pen tip 2, the control unit 5 may control the motor 61 to stop, so that the gear 62 stops rotating, and the user may use the rotated pen tip 3 normally.
In an alternative embodiment, the control unit 5 may obtain the detection signal once every preset time interval, so as to save the power of the power supply unit 7 without affecting the normal use of the pen tip 3 switched by the user. The preset time interval can be flexibly selected according to the actual application condition, for example, the timing detection time condition can be set in the system according to the distance and the action time generated in the switching process, so as to realize seamless connection operation. Assuming that the switching time of two different interfaces is T, a preset time interval required to be set and detected in the system is smaller than T, and specific numerical values are required to be obtained through experiments according to time operation.
According to another aspect of the present invention, a specific embodiment of a method for controlling a smart pen is disclosed. As shown in fig. 6, in the present embodiment, the method includes:
s100: detecting a writing object of the smart pen and forming a detection signal;
s200: determining the object type of the writing object according to the detection signal, and forming a control signal corresponding to the object type;
s300: and moving the pen point 3 corresponding to the writing object to the pen point 2 according to the control signal.
In a preferred embodiment, the method further comprises the step of performing an electric quantity detection before performing the detection of the writing object. Specifically, the back is opened to the smart pen, and accessible electric quantity detection module detects whether the electric quantity of power supply unit 7 satisfies the power needs of switching nib 3, if unsatisfied, accessible warning unit 9 feeds back the not enough information of electric quantity to the user, and the suggestion user supplies power to the smart pen. In this embodiment, when the electric quantity of the power supply unit is greater than the preset low electric quantity, the detection signal of the optical sensing assembly is acquired, the object type of the writing object is further judged, the forward rotation direction or the reverse rotation direction of the motor is determined according to the object type, the rotation position of the motor is detected in real time, after the motor rotates in place, the switching of the pen point is completed, the detection signal can be acquired again at intervals, whether the application object is switched or not is judged, when the object is switched, the pen point switching can be performed again, and therefore the automatic pen point switching function of the smart pen is achieved through active detection.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (9)
1. The intelligent pen is characterized by comprising a pen holder, a plurality of pen points, a sensing unit, a control unit and an actuating unit, wherein the pen holder is provided with pen points;
the sensing unit is used for detecting a writing object of the smart pen and forming a detection signal;
the control unit is used for determining the object type of the writing object according to the detection signal, forming a control signal corresponding to the object type and transmitting the control signal to the actuating unit;
the actuating unit is used for enabling the pen point corresponding to the writing object to move to the pen point according to the control signal;
the sensing unit comprises a light emitting element and a light sensing component;
the light sensing assembly receives reflected light which is emitted by the light emitting element and reflected by the writing object and forms a detection signal according to the reflected light, and the detection signal has light intensity information based on the writing object.
2. The smart pen according to claim 1, wherein a plurality of standard light intensity ranges corresponding to writing objects of different object types are preset in the control unit;
the control unit is used for determining the object type of the writing object according to the standard light intensity range in which the light intensity information of the detection signal falls.
3. The smart pen of claim 1, further comprising a power supply unit comprising a battery assembly electrically connected to each unit, respectively;
the power supply unit further comprises a wireless power supply assembly for charging the battery assembly, and the wireless power supply assembly generates charging current to charge the battery assembly under the action of an external wireless charging assembly; and/or
The power supply unit further comprises a charging interface which is arranged on the penholder and electrically connected with the battery pack, and when the charging interface is electrically connected with an external power supply, the external power supply charges the battery pack.
4. The smart pen of claim 3, further comprising a power sensing unit for detecting the power of the battery assembly;
the electric quantity sensing unit comprises a current detection resistor arranged at the current output end of the battery assembly and coulombmeters arranged at two ends of the current detection resistor;
the control unit is used for receiving the output information of the coulometer and processing the output information to obtain the electric quantity of the battery pack.
5. The smart pen of claim 1, wherein the plurality of pen points comprise at least a stylus for touching a display screen and a writing pen for writing paper.
6. The smart pen of claim 1, wherein the actuation unit comprises a motor and a gear electrically connected to the control unit;
the motor rotates according to the control signal to drive the gear to rotate, and the gear rotates to drive the plurality of pen points to move, so that the pen points corresponding to the writing objects move to the pen point positions.
7. The smart pen of claim 6, further comprising a position sensor;
the position sensor is used for forming a position detection signal containing pen point position information, the control unit is used for determining the position of a pen point corresponding to the writing object based on the position detection signal, and when the position of the pen point reaches the pen point, the actuating unit is controlled to stop.
8. The smart pen of claim 7, wherein the position sensor is a hall sensor;
the control unit is used for determining the rotating position of the motor based on the position detection signal, and when the rotating position of the motor reaches a preset position, the pen point corresponding to the writing object is determined to reach the pen point, and the actuating unit is controlled to stop.
9. A method of controlling a smart pen as claimed in any one of claims 1 to 8, comprising
Detecting a writing object of the smart pen and forming a detection signal;
determining the object type of the writing object according to the detection signal, and forming a control signal corresponding to the object type;
and moving the pen point corresponding to the writing object to the pen point according to the control signal.
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| CN201810875617.6A CN108819566B (en) | 2018-08-03 | 2018-08-03 | Intelligent pen and intelligent pen control method |
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| CN111771129B (en) * | 2019-01-31 | 2022-04-22 | 华为技术有限公司 | Device, method and equipment for measuring current |
| CN112127204B (en) * | 2019-06-25 | 2022-10-04 | 京东方科技集团股份有限公司 | Handwriting input device and handwriting input method |
| CN111694468B (en) * | 2020-06-15 | 2023-09-05 | 广州创知科技有限公司 | Method and device for determining type of target object |
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