CN110738492A - portable two-dimensional code display electronic device - Google Patents

Abstract

The invention discloses a portable two-dimensional code display electronic device, which is used in the field of electronic payment, comprising: a casing; a display unit arranged on the casing for displaying a two-dimensional code; a receiving unit for receiving The other electronic devices receive the two-dimensional code image; the central processing unit is connected with the display unit and the receiving unit, and is used to control the working states of the display unit and the receiving unit; the power supply unit is connected with the display unit, The receiving unit is connected to the central processing unit, and is used for supplying power to the display unit, the receiving unit and the central processing unit. The portable two-dimensional code display electronic device provided by the embodiments of the present application can receive two-dimensional codes produced from other electronic devices and display the two-dimensional codes, without paper printing and posting, and convenient replacement.

Description

A portable two-dimensional code display electronic device

technical field

The present application relates to the field of Internet technologies, and in particular, to a portable two-dimensional code display electronic device.

Background technique

A two-dimensional code, also known as a two-dimensional barcode, is a black and white graphic distributed on a plane (two-dimensional direction) with a specific geometric figure according to a certain rule, and is a key to all information data. In modern business activities, the achievable applications are very wide, such as product anti-counterfeiting/traceability, advertisement push, website link, data download, commodity transaction, payment, etc.

With the increase in the use of QR codes in the market, especially in the payment and verification market, it has a wide range of uses. Alipay or WeChat payment QR code stickers can be seen everywhere in various store markets; different merchants have their own Unique two-dimensional codes, but these two-dimensional codes need to be printed out on paper, and if there are changes, they need to be reprinted and pasted, which will waste paper and increase the cumbersome cost of replacing the two-dimensional code.

SUMMARY OF THE INVENTION

The main purpose of the embodiments of the present application is to provide a portable electronic device for displaying two-dimensional codes, which can receive and display two-dimensional codes without paper printing and posting, and is convenient for replacement.

In a first aspect, a portable two-dimensional code display electronic device is provided, including:

case;

a display unit, arranged on the casing, for displaying the two-dimensional code;

a receiving unit for receiving two-dimensional code images from other electronic devices;

a central processing unit, connected to the display unit and the receiving unit, for controlling the working states of the display unit and the receiving unit;

The power supply unit is connected to the display unit, the receiving unit and the central processing unit, and is used for supplying power to the display unit, the receiving unit and the central processing unit.

In a possible design, the portable two-dimensional code display electronic device further includes:

A trigger button is arranged on the casing and connected to the power supply unit, and is used for waking up the electronic device from a low power consumption state to a normal working state.

In a possible design, the trigger button is a mechanical button.

In a possible design, the display unit is an electronic ink screen.

In a possible design, the receiving unit uses a common attribute protocol framework for control communication, and is a receiving unit that is ready to use and does not require pairing.

In a possible design, the power supply unit is a button battery.

In a possible design, the central processing unit is a microcontroller unit.

In a possible design, the portable two-dimensional code display electronic device further includes an adapter unit, one end of the adapter unit is connected to the power supply unit, and the other end is connected to the display unit.

To sum up, the portable two-dimensional code display electronic device provided by the embodiments of the present application can receive two-dimensional codes produced from other electronic devices and display the two-dimensional codes, without the need for paper printing and posting, and the replacement is convenient.

Description of drawings

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

1 is a schematic diagram of a portable two-dimensional code display electronic device according to an embodiment of the present application;

2 is a schematic diagram of the internal structure of a portable two-dimensional code display electronic device provided by an embodiment of the present application;

3 is a schematic diagram of the internal working principle of a portable two-dimensional code display electronic device provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of the internal working principle of a portable two-dimensional code display electronic device according to an embodiment of the present application.

Detailed ways

The present invention will be described in detail below with reference to the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments do not limit the present invention. Equivalent transformations or substitutions all fall within the protection scope of the present invention.

Each embodiment in this specification shows a portable two-dimensional code display electronic device, which can receive two-dimensional codes produced from other electronic devices and display the two-dimensional codes without paper printing and posting, and is convenient for replacement.

Referring to FIG. 1 , the portable two-dimensional code display electronic device disclosed in the embodiment of the present application includes:

The housing 10, in this embodiment, the volume of the electronic device can be made small, in the shape of a small box, the shape can be the same size as the two-dimensional code image, and the appearance is small and beautiful.

The display unit 11 is arranged on the casing 10 and is used for displaying the two-dimensional code. The electronic device receives the two-dimensional code image from other electronic devices through wireless (such as Bluetooth, WIFI) or wired (USB data cable) and displays it on the display unit 11 . Compared with the traditional printing and posting method, it is easy to replace, saves paper, has low cost and is environmentally friendly.

In one embodiment, the display unit 11 is an electronic ink screen, which does not consume power in a non-refreshing state, and can retain the screen even when the power is turned off. For example, a 1.54-inch three-color screen can be used. Whenever the electronic device receives a new two-dimensional code image, it replaces the old two-dimensional code image and displays the new two-dimensional code image.

As shown in FIGS. 2 and 3 , the casing 10 includes a front casing 12 and a rear casing 13 , the display unit 11 is fixed on the front casing 12 , and the rear casing 13 and the front casing 12 are closed to form a whole casing The body 10 and the circuit board 14 are built into the housing 10 .

The receiving unit 15 and the central processing unit 16 are arranged on the circuit board 14 . The receiving unit 15 receives the two-dimensional code image from other electronic devices and sends it to the display unit 11 . The central processing unit 16 is connected to the display unit 11 and the receiving unit 15 and is used to control the working states of the display unit 11 and the receiving unit 15 .

A power supply unit 17 is also placed in the housing 10 , and the power supply unit 17 supplies power to the circuit board 14 . It can also be understood that the power supply unit 17 is respectively connected to the display unit 11 , the receiving unit 15 and the central processing unit 16 to supply power to them.

Except the display unit 11 is fixed on the surface of the casing 10, other units or units are built in the casing 10, and the casing 10 plays a very good protective role, which is waterproof, fireproof, and anti-physical bump, not easy to be damaged, and not easy to electronic devices. damaged, long service life.

In one embodiment, the portable two-dimensional code display electronic device further includes: a trigger button 18, which is arranged on the casing 10 and connected to the power supply unit 17, and is used to wake up the electronic device from a low power consumption state to normal operation. state. A common design method is that the trigger button 18 is a mechanical button. The mechanical button 18 protrudes from the casing 10 for easy pressing, and the other end is physically connected to the circuit board 14 .

In one embodiment, the power supply unit 17 is a button battery, the output voltage of the power supply is 3.3v, and only one power supply is used, which greatly reduces the volume of the electronic device.

In one embodiment, the central processing unit 16 is a microcontroller unit (Microcontroller Unit, MCU). The MCU can use STMicroelectronics' STM32L series of low-power chips, and the standby current is as low as 1uA. Because it is a low-power occasion, the clock source of the MCU is the internal crystal oscillator, so the circuit of the MCU part is relatively simple, most of which are corresponding Input/Output (IO) connection.

In one embodiment, the receiving unit 15 can use a Bluetooth 4.0 unit of the cc2540 series of TI, which also has low power consumption and is smaller in size than a 1-yuan coin. The receiving unit 15 is no longer an ordinary serial port transparent transmission. (like HC-05), but use the Generic Attribute Profile (GATT) framework for control communication, and it is connected immediately without pairing (the connection speed is in milliseconds), and the power consumption is as follows:

Sleep mode: 0.3uA

Broadcast (broadcast period 20ms): 0.15-1.01mA

Connection status (connection interval 20ms): 2.06mA

As shown in FIG. 3 , in an embodiment, in order to reduce transcoding errors, the portable two-dimensional code display electronic device further includes an adapter unit 19 , one end of the adapter unit 19 is connected to the power supply unit 17 , and the other end is connected to the display unit 11 .

The portable two-dimensional code display electronic device is connected with other electronic devices (usually mobile phones, IPAD and other terminal equipment) through Bluetooth. Generally, the portable two-dimensional code display electronic device is in a standby state, and the mobile phone cannot scan Bluetooth at this time. When the trigger button is pressed to wake it up, the name of the portable QR code display electronic device can be found in the Bluetooth search list of the mobile phone. When the connection is completed, open the APP that can generate the QR code image, and put the The image data of the two-dimensional code is sent to the portable two-dimensional code display electronic device through Bluetooth. At this time, the portable two-dimensional code display electronic device will refresh the screen after receiving the two-dimensional code data. After the APP exits, the Bluetooth connection will be disconnected. The portable QR code display electronic device will enter the standby state.

In the embodiment of this application, the key-press wake-up mode is used in the standby state. Generally, only the receiving unit 15 and the micro-control unit consume power, which is about 1.3uA, and the current consumption of other devices is calculated at 1.7uA. The theoretical overall The current is 3uA, the capacity of a button battery is 200mA, and the theoretical standby time is: 200mAh/0.003mAh=66666h=2777 days, but when working, Bluetooth will connect and transmit, and the power consumption of the MCU will also increase. It also consumes power when refreshing. It is estimated that the current consumption may reach 1mA when these are working at the same time, but most electronic devices work in standby mode, so there is no problem in using a button battery for one to two years. MCU and Bluetooth need to run in low-power mode, and the unused pins of MCU need to be set to high-impedance mode or open-drain output mode to ensure that the overall power consumption will not increase due to current sinking; after the initialization of Bluetooth and display After the unit, it is necessary to initialize the IO of the trigger button to the external interrupt trigger mode, and then initialize the unused IO to enter the standby mode.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, for the specific working process of the above-described devices and units, reference may be made to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .

In this patent scheme, the device in standby is woken up by pressing the button, so as to avoid the power consumption problem that the Bluetooth is in long standby (in the broadcast state). The Bluetooth of the present invention adopts the sleep mode. The power consumption design has reached the optimum.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be included 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.

Claims (10)

1, portable two-dimensional code display electronic device, its characterized in that includes:

a housing;

the display unit is arranged on the shell and used for displaying the two-dimensional code;

a receiving unit configured to receive a two-dimensional code image from another electronic device;

the central processing unit is connected with the display unit and the receiving unit and is used for controlling the working states of the display unit and the receiving unit;

and the power supply unit is connected with the display unit, the receiving unit and the central processing unit and used for supplying power to the display unit, the receiving unit and the central processing unit.

2. The portable two-dimensional code display electronic device according to claim 1, further comprising:

and the trigger key is arranged on the shell, is connected with the power supply unit and is used for awakening the electronic device from a low power consumption state to a normal working state.

3. The portable two-dimensional code display electronic device according to claim 2, wherein the trigger button is a mechanical button.

4. The portable two-dimensional code display electronic device according to claim 1, wherein the display unit is an electronic ink screen.

5. The portable two-dimensional code display electronic device according to claim 1, wherein the receiving unit uses generic attribute protocol framework for control communication and is a ready-to-use and no-pairing receiving unit.

6. The portable two-dimensional code display electronic device according to any of claims 1-5, wherein the power supply unit is a button battery.

7. The portable two-dimensional code display electronic device according to any of claims 1-5, wherein the central processing unit is a micro-control unit.

8. The portable two-dimensional code display electronic device according to any of claims 1-5, further comprising a switch unit, wherein the switch unit is connected to the power supply unit, and another is connected to the display unit.

9. The portable two-dimensional code display electronic device according to of claims 1-5, wherein the housing comprises a front housing and a rear housing, the display unit is fixed on the front housing, and the rear housing and the front housing form a whole housing when closed.

10. The portable two-dimensional code display electronic device according to claim 9, further comprising a circuit board, the circuit board being built into the housing.

Images