CN210091110U - A smart pen that improves the accuracy of collecting image information - Google Patents

Abstract

The utility model relates to an improve intelligent pen of gathering image information precision, include: the pen comprises a pen core and an image acquisition assembly, wherein the pen core and the image acquisition assembly are arranged in a pen shell, and the pen core is characterized in that an image acquisition unit comprises a signal transmitter and a signal receiver, the signal transmitter is a light emitting diode, the signal receiver is a camera assembly, the light emitting diode is combined with the camera assembly, the pen core comprises a pen point, and the distance L between the axis of the camera unit and the axis of the pen point is 2.5-4.5 mm; has the advantages that: the refill is inclined, so that the distance between the pen point of the refill and the axis of the image acquisition unit is changed into a distance L, and the distance L is 2.5-4.5mm, thus image information with higher precision can be obtained without replacing the image acquisition unit, and the cost cannot be increased.

Description

A smart pen that improves the accuracy of collecting image information

technical field

The utility model relates to the technical field of intelligent writing pens, in particular to an intelligent pen which improves the accuracy of collecting image information.

Background technique

With the development of science and technology, various smart devices have sprung up like mushrooms after the rain, which has profoundly changed people's traditional habits. Now there are various smart pens used to write or draw on traditional paper or blackboard or objects, touch screen or touch screen to write or draw, and then display on touch screen or screen, and form an electronic file to save.

However, most of the existing smart pens have not noticed the influence of the image acquisition component on the smart pen. Generally, when the smart pen captures the writing page 12 (paper or blackboard or object or touch screen or touch screen) with position coding, due to the image acquisition The light or coverage area of the component is not enough, resulting in the loss of the collected information and the inability to read it; therefore, someone submits the accuracy of the camera component in the image acquisition component to solve the above problem, and the cost of the smart pen will also increase accordingly. .

To sum up, we need a smart pen that can improve the accuracy of image capture information without purchasing high-precision camera components.

Utility model content

In view of the above-mentioned deficiencies in the current technology, the present invention provides a smart pen that improves the accuracy of collecting image information, which solves the above technical problems.

In order to achieve the above purpose, the utility model adopts the following technical solutions: a smart pen for improving the accuracy of collecting image information: a writing core, an image collecting unit, the image collecting unit includes a signal transmitter and a signal receiver, the signal The transmitter is a light-emitting diode, the signal receiver is a camera assembly, the light-emitting diode is combined with the camera assembly, the pen core includes a pen tip, and the distance L between the axis of the camera assembly and the axis of the pen tip is 2.5-4.5mm .

As a preferred technical solution of the present invention, the pen tip includes any one of the following technical features or any combination of technical features, the pen tip is a pencil; the pen tip is a fountain pen; the pen tip is a ball pen; the The nib is an oil-based pen; the nib is a water-based pen; the nib is a writing brush; the nib is a watercolor pen; the nib is an oil paintbrush; the nib is a capacitor pen; the nib is a A resistance pen; the pen tip is an electromagnetic pen; the pen tip is a whiteboard pen.

As a preferred technical solution of the present invention, a pressure sensor is also included, which is connected to the sliding block assembly, and a sliding block silicone pad is arranged between the sliding block assembly and the pressure sensor. The pressure is transmitted to the pressure sensor, generating a sensing signal, and starting the processor, the signal transmitter and the signal receiver; the signal transmitter, connected with the pressure sensor, transmits a detection signal to the object to be tested around the pen tip; A signal receiver, connected with the pressure sensor, receives the detection signal reflected from the object to be measured, and generates image data; a processor, connected with the pressure sensor and the signal receiver, receives the signal sent by the signal receiver The image data is parsed into digital signals to generate transmission data packets; the wireless data interface is connected with the processor, and transmits the transmission data packets to the host computer wirelessly.

As a preferred technical solution of the present invention, the smart pen further includes: a memory connected to the processor for storing the image data and transmitting data packets.

As a preferred technical solution of the present invention, the wireless data interface wirelessly transmits the transmission data packets stored in the memory to the upper computer.

As a preferred technical solution of the present invention, the wireless data interface is specifically a Bluetooth interface, an infrared interface, a Wifi interface, a 2.4-5.0 GHz band interface or a wireless communication interface.

As a preferred technical solution of the present invention, the smart pen further comprises: a power source, which is connected to the pressure sensor, the processor, the signal transmitter and the signal receiver; a switch circuit, which is connected to the power source; A first circuit board and a second circuit board, the switch circuit and the wireless data interface are located on the first circuit board, and the pressure sensor, the processor, the signal transmitter, and the signal receiver are located on the second circuit board.

Combining the above technical solutions, we are different from traditional smart pens that improve the accuracy of collecting image information. The beneficial effects of the utility model are as follows: the pen refill is tilted, so that the distance between the pen tip of the pen refill and the axis of the image acquisition unit becomes a distance L, and the distance L is 2.5-4.5 mm, so that the image acquisition unit can be obtained without replacing the image acquisition unit. Accurate image information, the cost will not increase.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. , for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of an image acquisition component of a smart pen that improves the accuracy of acquiring image information according to the present invention.

FIG. 2 is a schematic diagram of the structure of the smart pen with the improved accuracy of collecting image information according to the present invention.

FIG. 3 is a schematic diagram of a module of the present invention having the smart pen which improves the accuracy of collecting image information.

FIG. 4 is a schematic diagram of the distance L between the refill of the smart pen and the camera assembly with the improved accuracy of collecting image information according to the present invention.

Description of reference numerals

1. Pen shell; 101, Bracket; 2. Pen core; 201, Pen tip; 204, Sliding block silicone pad; 3. Pressure sensor; 4. Image acquisition component; 401, Camera component; 402, Light-emitting diode; 6. Processing 7, data interface; 72, wireless data interface; 8, memory; 9, switch circuit; 10, power supply; 11, slider assembly; 111, slider housing; 112, slider positioning piece; distance L; 12 , writing page.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "outside", "inside", "upper", "lower", etc. are based on the orientation or positional relationship shown in the accompanying drawings, only for the purpose of It is for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "connection" and "arrangement" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, or Integrally connected; either mechanical or electrical. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other; and, the "and/or" includes both "and" and "or". possible examples.

The present invention provides a smart pen that improves the accuracy of collecting image information. As shown in FIG. 1 , when a user writes with an activated smart pen in the same way as a normal pen, the light emitting diode 402 illuminates the area near the tip of the pen. The camera assembly 401 records images of the vicinity of the tip 201 of the pen on the writing page, and the processor 6 calculates the position of the tip 201 from these images. Here, specific graphics on the writing page 12 can be used, eg CN101064013A Image Index Structure (Position Encoding), which are incorporated herein by reference. With the aid of the graphics on the writing page 12, the position of the pen tip 201 can be determined at any time, and in this way the content written by the user can be recorded. The camera assembly 401 is preferably a solid state image sensor, but other types of two-dimensional detectors may be employed, such as detectors that can read chemical, acoustic, electromagnetic, capacitive, or inductive symbols.

In order to determine the position of the pen tip 201, the relative position of the pen tip 201 to the camera assembly 401 is very important. To further illustrate the problem, the respective components of the pen tip 2 have different inclination angles for the writing page 12 .

The camera assembly 401 ensures that the recorded image has sufficient sharpness over the relevant portion of the imaging area. The pen tip 201 is placed on the writing page 12 , the light from the camera assembly 401 is irradiated on the writing page 12 , and a distance L is generated between the pen tip 201 and the optical axis of the camera assembly 402 . If the magnitude of the distance L is not adequately controlled, the distance L may be so large for some pens that the camera assembly 401 cannot send useful images to the processor 6 . This problem can be solved by using a more detailed camera assembly 401, however, this will result in a limitation on the amount of light that can be transmitted from the imaging component to the sensor; and the cost of the entire pen will be higher.

The importance of the distance L in decoding the position-encoded graphics on the written page 12 is to correlate the positions of the strokes read by the smart pen with the physical strokes on the written page 12 . For example, the processor 6 may be arranged to calculate the spatial orientation (tilt or rotation) and position of the pen from an image, and to know the position, spatial orientation and distance L to calculate the writing position, ie the position of the pen tip 201 . In this way, at the calculated writing position, deviations from the value of the distance L can lead to system errors.

Furthermore, and most importantly, if the axial distance L between the pen tip 201 and the camera assembly 401 is reduced, this will also affect the distance of the focal plane of the camera assembly 401 relative to the writing page 12, therefore, the distance L must be within An interval value is best.

The pen refill 2 , the sensor and the imaging component are installed on different parts inside the pen, and the light-emitting diode 402 of the imaging component and the camera assembly 401 are arranged on the bracket 101 . Thus, the pen mounting accuracy can be significantly improved since several sources of deviation are eliminated. The mounting holes formed on the pen housing 1 are respectively used for the camera assembly 401 , the light-emitting diode 402 , and the pen refill 2 .

On the written page 12, the illuminated area must be relatively large compared to the imaged area. Ensuring good illumination of the area scanned by the camera assembly 401 increases the probability of determining the position of the pen tip with high accuracy. The illuminated area can be adjusted to the imaging area to a higher degree than before, which means that the light intensity in this area can be increased. In order to save current and thus prolong battery life, the drive current into the LEDs can be reduced without reducing detectability; of course, the LEDs 402 are preferably laser diodes.

The stent is injection molded from thermoplastics including polycarbonate and ABS plastics, for example. Other materials such as thermosets or metals can also be used for the bracket. Shaping can also be carried out, for example by casting or milling.

The refill 2 can be inserted into the through hole to form a separate part. When necessary, the through hole can be inclined at a certain angle, so that the distance L between the refill 2 and the optical axis of the camera assembly 401 becomes smaller, and the distance L ranges from 2.5mm to 4.5mm.

The light emitting diode 402 and the camera assembly 401 are fixed on the bracket 101 . Therefore, the light emitting diode 402 is securely fixed so as not to be tilted from the position of the camera assembly 401 .

The pen housing 1 and the holder 101 are made of a material that is opaque to the irradiance light associated with the irradiance light emitted by the light emitting diodes 402 and the irradiated writing page 12 . This reduces the risk of unwanted irradiated light entering the interior of the pen and interfering with reading the position code of the written page 12 .

When manufacturing the pen, it is also suitable to mount one or more main circuit boards within the pen housing of the pen. One or more processors, storage units (memory 8) and image acquisition components 4 (signal transmitter, signal receiver), as well as wiring, charging sockets, etc. can also be installed on the main circuit board (each main circuit board)/ Integrated with the main circuit board (each main circuit board). The camera assembly is then connected to the processor using a flexible electrical coupling. Additional components such as batteries may be mounted inside the pen before the pen housing 1 is sealed, eg by joining the two housing halves.

As shown in FIG. 2 and FIG. 3 , the smart pen includes: a pen housing 1 , a refill 2 , a pressure sensor 3 , a signal transmitter, a signal receiver, a processor 6 , and a wireless data interface 72 . The signal transmitter and the signal receiver can be image acquisition components integrated with the light-emitting diode and the camera unit.

The pen housing 1 can be made of engineering plastics, and usually includes two shells that can be snapped together, and other components are accommodated in the pen housing 1 .

The tip of the refill 2 protrudes from the pen housing. The function of the refill 2 is to write, that is, to generate strokes and stroke order, which can be written on paper or on a whiteboard. For writing on paper, the refills can be oily (ballpoint) refills, water-based (neutral) refills, pencil refills, rewritable (ink-decomposing) refills, and erasable (ink-cured) refills , Plastic (PP, PET, PVC, etc.) refills, etc. If writing on a whiteboard, the whiteboard can be a hand-held whiteboard or a whiteboard that is hung and pasted on the wall.

The pressure sensor 3 is connected to the sliding block assembly 11, and a sliding block silicone pad 204 is arranged between the sliding block assembly 11 and the pressure sensor 3, and the pressure generated when the refill 2 writes is transmitted to the pressure sensor 3, A sensory signal is generated to activate the processor 6, the signal transmitter and the signal receiver.

The function of the pressure sensor 3 is to indicate that the refill 2 is already writing, and the smart pen needs to work. The pressure sensor 3 can be matched differently according to the usage scenarios of the smart pen. For example, when writing on the paper surface, because the paper surface is elastic and compressible, the sensitivity of the pressure sensor 3 needs to be higher, otherwise the refill 2 cannot be recognized as writing. When writing on the whiteboard, because the whiteboard is hard and has little elasticity, the sensitivity of the pressure sensor can be slightly smaller, and it can also recognize that the refill 2 is writing.

The signal transmitter is connected with the pressure sensor 3, and transmits a detection signal to the object to be tested around the pen tip. When the pressure sensor 3 senses the writing pressure of the refill 2, the signal transmitter starts to work and emits a signal. The signal generator 4 may be a transmitter that emits sound waves, ultrasonic waves, infrared rays, ultraviolet rays, visible light (each wavelength band), X-rays, gamma rays, and the like.

Optionally, there are many ways for the signal transmitter to transmit the detection signal, specifically, the detection signal is transmitted to the object under test around the pen tip in a continuous or fixed frequency, frequency conversion or frequency modulation manner.

The signal receiver is connected to the pressure sensor 3, receives the detection signal reflected from the object to be measured, and generates image data. The image data at this time is an analog signal. The signal receiver needs to be matched with the signal transmitter, which can receive the detection signal reflected from the DUT. Because the transmitter 4 transmits a detection signal to the object to be tested around the refill 2 , the signal receiver also generates an image of the object to be tested around the refill 2 . When the pressure sensor 3 senses the writing pressure of the refill 2, the signal receiver starts to work, receives the detection signal reflected by the object to be tested, and generates analog image data.

The processor 6 is connected with the pressure sensor 3 and the signal receiver, receives the image data sent by the signal receiver, parses it into digital signals, and generates transmission data packets. When the pressure sensor 3 senses the writing pressure of the refill 2, the processor 6 starts to work, processes the received analog image data into digital signal data, and then generates a transmission data packet.

Optionally, when the pressure sensor 3 senses the pressure written by the refill 2, it generates pressure-sensitive data and sends it to the processor 6, and the processor 6 parses the image data into digital signals, and communicates with the pressure-sensitive data sent by the pressure sensor, As well as the clock and timeline are encoded into standard transport packets.

The wireless data interface 72 is connected with the processor 6, and transmits the transmission data packets to the upper computer by wireless means. The function of the wireless data interface 72 is to transmit and transmit data packets to the host computer in a wireless manner, because the wireless manner is more convenient and does not require a cable connection. Specifically, the wireless data interface is specifically a Bluetooth interface, an infrared interface, a Wifi interface, a 2.4-5.0 GHz band interface or a wireless communication interface. Bluetooth interface, infrared interface, Wifi interface, 2.4-5.0GHz band interface are wireless local area network communication, and the communication interface can use 2G, 3G or 4G technology to communicate with the host computer using the communication network.

The upper computer obtains the image information of the object to be measured around the tip of the pen according to the transmission data packet, and uses the dot matrix technology to realize precise positioning and electronic synchronization of data.

As shown in the figure, the smart pen of the present invention further includes: a memory 8 , a power source 10 and a switch circuit 9 .

The memory 8 is connected to the processor 6 and stores image data and transmits data packets. The wireless data interface 72 wirelessly transmits the transmission data packets stored in the memory 8 to the upper computer.

It should be noted here that there are two cases for the wireless data interface 72 to transmit data packets to the upper computer. One is real-time transmission. The processor 6 parses the image data into digital signals in real time, and communicates with the pressure-sensing data sent by the pressure sensor. , and the clock and the time axis are encoded into standard transmission data packets in real time, and then the wireless data interface 72 wirelessly transmits the transmission data packets to the host computer in real time. The other is non-real-time transmission. The processor 6 parses the image data into digital signals in real time, and encodes the pressure-sensing data sent by the pressure sensor, as well as the clock and the time axis into standard transmission data packets in real time, which are then stored in the memory 8, and then stored in the memory 8. The wireless data interface 72 transmits the transmission data packets stored in the memory 8 to the upper computer in a set time or other non-real-time manner.

The power supply 10 is connected to the pressure sensor 3, the processor 6, the signal transmitter and the signal receiver. The purpose of the power supply 10 is to power the pressure sensor 3 , the processor 6 , the signal transmitter and the signal receiver 5 .

Specifically, the power source 10 may be a battery, such as a rechargeable battery.

The switch circuit 9 is connected with the power supply 10, and its function is to control the power supply 10 to supply power to the pressure sensor 3, the processor 6, the signal transmitter and the signal receiver, which can be realized by using a hard switch.

In addition, the high-comfort smart pen may also include a first circuit board and a second circuit board that are flexibly connected, the switch circuit 9 and the wireless data interface are located on the first circuit board, and the pressure sensor, processor, signal transmitter, and signal receiver are located on the first circuit board. second circuit board. A battery is spaced between the first circuit board and the second circuit board, and a flexible connection can be used for the connection.

The specific working process of the high-comfort smart pen of the present invention is as follows:

1. Turn on the switch circuit, turn on the power, the pressure sensor, processor, signal transmitter and signal receiver, detect their own state, and be in standby state;

2. The tip of the refill is used for writing, and the pressure generated when the refill writes is transmitted to the pressure sensor to generate a sensing signal, start the processor, the signal transmitter and the signal receiver, and will include the force direction and force. size data is sent to the processor;

3. The signal transmitter sends a detection signal to the object to be tested around the tip of the pen;

4. The signal receiver receives the detection signal reflected from the object to be measured according to the set frequency, generates image data and sends it to the processor. The image data here is the image collected around the tip of the pen, which is an analog image signal;

5. The processor receives the analog image signal, parses the analog signal image into a digital signal through the set program algorithm, and encodes it with the pressure-sensitive data, clock, audio timeline, etc. into a transmission data packet in a standard data packet format;

6. The processor sends the standard data format to the wireless data interface or memory according to the task instruction;

7. The wireless data interface sends the transmission data packets sent by the processor to the upper computer in real time, or sends the transmission data packets stored in the memory to the upper computer in non-real time;

8. The refill stops writing, the pressure sensor no longer generates sensing signals, and the processor, signal transmitter and signal receiver stop working;

9. Turn off the switch circuit, disconnect the power supply, and no longer supply power to the pressure sensor, processor, signal transmitter and signal receiver.

The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited to this. Any person skilled in the art can easily think of changes within the technical scope disclosed by the present utility model. Or replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims. Unless otherwise defined, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention.

Claims (7)

1. An intelligent pen for improving the accuracy of image information acquisition, comprising: the pen comprises a pen core and an image acquisition assembly, wherein the pen core and the image acquisition assembly are arranged inside a pen shell, and the pen is characterized in that the image acquisition unit comprises a signal transmitter and a signal receiver, the signal transmitter is a light emitting diode, the signal receiver is a camera assembly, the light emitting diode and the camera assembly are combined together, the pen core comprises a pen point, and the distance L between the camera assembly and the axis of the pen point is 2.5-4.5 mm.

2. The smart pen for improving the accuracy of image information acquisition according to claim 1, wherein the pen tip comprises any one or any combination of technical features, and the pen tip is a pencil; the pen point is a pen; the pen point is a ballpoint pen; the pen point is an oil pen; the pen point is a water-based pen; the pen point is a writing brush; the pen point is a water color pen; the pen point is an oil painting brush; the pen point is a capacitance pen; the pen point is a resistance pen; the pen point is an electromagnetic pen; the pen point is a whiteboard pen.

3. The intelligent pen capable of improving the accuracy of image information acquisition according to claim 1 or 2, further comprising a pressure sensor and a sliding block assembly, wherein the pressure sensor is connected with the sliding block assembly, a sliding block silica gel pad is arranged between the sliding block assembly and the pressure sensor, when the pen core writes, the generated pressure is transmitted to the pressure sensor, a sensing signal is generated, and a processor, a signal transmitter and a signal receiver are started; the signal emitter is connected with the pressure sensor and emits a detection signal to the object to be detected around the pen point; the signal receiver is connected with the pressure sensor, receives a detection signal reflected from the object to be detected and generates image data; the processor is connected with the pressure sensor and the signal receiver, receives the image data sent by the signal receiver, analyzes the image data into digital signals and generates transmission data packets; and the wireless data interface is connected with the processor and transmits the transmission data packet to the upper computer in a wireless mode.

4. The smart pen for improving the accuracy of image information acquisition according to claim 3, further comprising: and the memory is connected with the processor and used for storing the image data and the transmission data packet.

5. The intelligent pen for improving the accuracy of the collected image information according to claim 4, wherein the wireless data interface transmits the transmission data packet stored in the memory to the upper computer in a wireless mode.

6. The smart pen for improving the accuracy of image information collection according to claim 5, wherein the wireless data interface is a Bluetooth interface, an infrared interface, a Wifi interface, a 2.4-5.0GHz band interface, or a wireless communication interface.

7. The smart pen for improving the accuracy of image information acquisition according to claim 6, further comprising: the power supply is connected with the pressure sensor, the processor, the signal transmitter and the signal receiver; a switching circuit connected to the power supply; the pressure sensor, the processor, the signal transmitter and the signal receiver are located on the second circuit board.

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