WO2020207137A1

WO2020207137A1 - Electronic signage, electronic signage system and method for controlling same

Info

Publication number: WO2020207137A1
Application number: PCT/CN2020/076738
Authority: WO
Inventors: 胡科军; 饶晖; 张治国
Original assignee: 京东方科技集团股份有限公司
Priority date: 2019-04-09
Filing date: 2020-02-26
Publication date: 2020-10-15
Also published as: CN109887428A

Abstract

An electronic signage, an electronic signage system and a method for controlling the same. The electronic signage comprises an electronic ink screen (2), a wireless transmission circuit (3), a near field communication circuit (4) and a microcontroller (1). The microcontroller (1) is respectively connected to the electronic ink screen (2), the wireless transmission circuit (3) and the near field communication circuit (4). The microcontroller (1) is used to read user information by means of the near field communication circuit (4), to send the user information and receive input information by means of the wireless transmission circuit (3), to control the electronic ink screen (2) to display the input information, and to deenergize the electronic ink screen (2) after the electronic ink screen (2) has displayed the input information.

Description

Electronic billboard, electronic billboard system and control method thereof

This application claims the priority of the Chinese patent application with application number 201910280904.7 filed on April 9, 2019, the entire content of which is incorporated into this application by reference.

Technical field

The present disclosure relates to the field of display technology, and in particular to an electronic billboard, an electronic billboard system and a control method thereof.

Background technique

At present, the degree of informatization and intelligence of factory assembly workshops is still low, and traditional paper-based media are still used in areas involving production assembly processes and equipment operation instructions, which are neither environmentally friendly nor conducive to instant information interaction and production management.

In traditional technology, liquid crystal display devices are used to display information such as work flow, technology, and management regulations. However, this solution has the following shortcomings, that is, the overall power consumption and cost of the liquid crystal display device are high, and it requires complicated installation and wiring. It is wasteful for the above occasions that do not need to dynamically refresh information in real time, and the cost performance is not very high.

Summary of the invention

According to an aspect of the present disclosure, there is provided an electronic signage, including:

Electronic ink screen;

Wireless transmission circuit;

Near field communication circuit; and

The microcontroller is connected to the electronic ink screen, the wireless transmission circuit, and the near field communication circuit, and is configured to read user information through the near field communication circuit, and through the wireless The transmission circuit sends the user information and receives input information, controls the electronic ink screen to display the input information, and powers off the electronic ink screen after the electronic ink screen displays the input information.

For example, the wireless transmission circuit is a radio frequency transceiver.

For example, the radio frequency transceiver operates in the Sub-GHz frequency band.

For example, the electronic billboard also includes:

A wake-up button, the wake-up button is arranged on the side of the electronic ink screen and connected to the microcontroller;

Wherein, the wake-up button is configured to transmit a wake-up signal to the microcontroller, and the microcontroller is also configured to respond to the wake-up signal again after the electronic ink screen is powered off. Screen power supply.

For example, the electronic signboard further includes: a page update button, the page update button is arranged on the side of the electronic ink screen and connected to the microcontroller;

Wherein, the page update button is configured to send a page update signal to the microcontroller, and the microcontroller is further configured to update the content displayed on the electronic ink screen in response to the page update signal.

For example, the electronic billboard also includes:

The secondary battery is configured to supply power to the electronic signage.

For example, the electronic billboard also includes:

At least one electrical connection interface, the electrical connection interface is arranged on the side of the electronic ink screen and connected to the microcontroller.

For example, the electronic billboard also includes:

A mounting bracket, the mounting bracket is arranged on the side of the electronic billboard opposite to the electronic ink screen, and the mounting bracket is configured to install the electronic billboard at a predetermined position.

According to another aspect of the present disclosure, there is provided an electronic signage system, including:

At least one of the above electronic billboards;

Gateway; and

A server, which is connected to the electronic signage via the gateway.

For example, the server is configured to:

Receiving user information from the electronic billboard; and

The user information is matched with the information pre-stored in the database of the server, and the input information for the user information is sent to the electronic billboard in response to a successful matching.

For example, the server is also configured to:

In response to a successful match, the time when the user information is received is used as the user's start working time;

In response to receiving the user information from the electronic billboard again after the matching is successful, the time when the user information is received again is used as the end working time of the user;

Determine the user’s working time length information according to the user’s starting working time and the user’s ending working time;

Sending the user’s working hours information to the electronic billboard,

Wherein, the microcontroller of the electronic signage is further configured to receive the user’s working time information through the wireless transmission circuit, control the electronic ink screen to display the working time information, and display it on the electronic ink screen After the information of the working time length, the power supply to the electronic ink screen is cut off.

According to another aspect of the present disclosure, there is provided a control method of the above electronic signage, including:

Read user information through the near field communication circuit;

Sending the user information and receiving input information through a wireless transmission circuit;

Controlling the electronic ink screen to display the input information; and

After the electronic ink screen displays the input information, the electronic ink screen is powered off.

For example, the control method further includes: activating the electronic signage before reading user information through the near field communication circuit.

For example, the activation of the electronic signage includes:

In response to activation events, periodically scan the gateway;

Determine the valid gateway among the scanned gateways; and

Register with the valid gateways that meet the preset conditions.

For example, the control method further includes: entering the monitoring mode after powering off the electronic ink screen, and periodically shaking hands with the registered gateway in the monitoring mode.

For example, the control method further includes:

In response to reading the user information again through the near field communication circuit in the listening mode, sending the user information again; and

Receive the user's working time information, control the electronic ink screen to display the working time information, and cut off the power supply to the electronic ink screen after the electronic ink screen displays the working time information.

According to another aspect of the present disclosure, there is provided a control method of the above electronic signage system, including:

The electronic billboard reads user information and sends it to the server via the gateway;

The server receives user information from the electronic billboard, matches the user information with information pre-stored in the server's database, and sends input information for the user information to the electronic billboard in response to a successful match; and

The electronic billboard controls the electronic ink screen of the electronic billboard to display the input information, and powers off the electronic ink screen after the electronic ink screen displays the input information.

For example, the control method further includes:

In response to a successful match, the server uses the time when the user information is received and the electronic signage is the user's start time, and in response to receiving the user information from the electronic signage again after the match is successful, The time when the user information is received again is used as the end working time of the user;

The server determines the user's work duration information according to the user's start working time and the user's end working time.

For example, the control method further includes:

The server sends the user's working time information to the electronic signage;

The electronic billboard receives the user's working time information, controls the electronic ink screen to display the working time information, and cuts off the power supply to the electronic ink screen after the electronic ink screen displays the working time information.

The above description is only an overview of the technical solutions of the present disclosure. In order to have a clearer understanding of the technical means of the present disclosure and can be implemented in accordance with the content of the specification, the preferred embodiments of the present disclosure are described in detail below with the accompanying drawings.

Description of the drawings

FIG. 1 is a schematic structural diagram of an electronic billboard provided by an embodiment of the present disclosure;

Figure 2 is a schematic structural diagram of an electronic signage system provided by an embodiment of the present disclosure;

FIG. 3 is a schematic flowchart of another method for controlling an electronic signage system according to an embodiment of the present disclosure;

FIG. 4 is a flowchart of an electronic signage control method provided by an embodiment of the present disclosure;

FIG. 5 is a flowchart of the operation in the registration mode in the control method of FIG. 4; and

FIG. 6 is a flowchart of operations in the card reading mode in the control method of FIG. 4.

detailed description

In order to further explain the technical means and effects of the present disclosure to achieve the intended purpose of the invention, the specific implementations of the electronic signage, the electronic signage system and the control method thereof proposed according to the present disclosure are given below with reference to the accompanying drawings and preferred embodiments. , Structure, characteristics and effects are described in detail later. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

Fig. 1 is a schematic structural diagram of an electronic signage provided by an embodiment of the present disclosure.

As shown in FIG. 1, an electronic signage provided by the first embodiment of the present disclosure includes: a microcontroller 1, an electronic ink screen 2, a wireless transmission device 3, and a near field communication device 4; the electronic ink screen 2, wireless The transmission device 3 and the near field communication device 4 are respectively connected to the microcontroller 1; wherein, the microcontroller 1 reads user information through the near field communication device 4, and sends the user information through the wireless transmission device 3. And receiving input information from the server, the microcontroller 1 controls the electronic ink screen 2 to display the input information, and controls the electronic ink screen 2 to display the input information and then power off.

Specifically, Microcontroller 1 (Microcontroller Unit, MCU), also known as Single Chip Microcomputer (Single Chip Microcomputer) or Single Chip Microcomputer, is to appropriately reduce the frequency and specifications of the Central Processing Unit (CPU) and reduce the memory (memory), counter (Timer), USB, A/D conversion, UART, PLC, DMA and other peripheral interfaces, and even LCD drive circuit are integrated on a single chip to form a chip-level computer, making different combinations for different applications It also has excellent dynamic operation, low power consumption, multiple low-power sleep modes and wake-up modes. For example, you can choose a low-power processor of model STM32L4.

The electronic ink screen 2 is a screen that uses electronic ink, and the electronic ink screen 2 is also called electronic paper. The electronic ink can change the color when the power is on, and can display the changed image, like a calculator or a mobile phone. The electronic ink screen 2 can display the required image when the power is on, and keep the last displayed image when the power is off. That is, it can be displayed when the power is off, suitable for static display, and has a good energy saving effect. The size of the display screen of the electronic ink screen 2 in the embodiment of the present disclosure can be set according to actual practical conditions.

The wireless transmission device 3 can be any device capable of wireless transmission of information, such as a wireless transmission circuit, which includes but is not limited to Bluetooth, WIFI (wireless fidelity), Zigbee (Zigbee), LPWAN (Low-Power Wide-Area) Network, low-power wide-area network) or gigahertz (GHz) radio frequency transceiver. The wireless transmission device 3 can communicate with the gateway.

Near field communication device 4 (near field communication, NFC) can be a near field communication circuit, which integrates the functions of an inductive card reader, an inductive card, and point-to-point communication on a single chip, which enables the electronic signage to realize access control and mobile identity Recognition, anti-counterfeiting and other functions.

The electronic billboard provided by the embodiment of the present disclosure has an electronic ink screen 2, which can continue to display required information in the event of a power failure, and is suitable for displaying information that needs to be statically displayed such as work content and process flow in the workshop, effectively solving electrical energy Waste. The electronic billboard is controlled by the microcontroller 1. The display drive system based on the microcontroller 1 has low circuit complexity and achieves a lower total system cost, that is, reduces the overall cost of the electronic billboard. The electronic billboard adopts the wireless transmission device 3 for information input. Compared with the liquid crystal display device in the prior art, which needs to be connected with complicated wires, the electronic billboard provided by the embodiment of the present disclosure does not require wiring, which has the technical effect of easy installation and is suitable for In an environment with many production equipment in the factory floor. In addition, the electronic signage is also provided with a near field communication device 4, which can read the user's identity information and verify it through the microcontroller 1 or the server, so that the electronic signage can realize the function of displaying specific information for a specific user.

In a specific implementation, the wireless transmission device 3 may be a radio frequency transceiver, such as a radio frequency transceiver operating in the Sub-GHz frequency band.

Specifically, the Sub-GHz frequency band (that is, the frequency is below 1GHz, 27MHz-960MHz) is one of the important frequency bands for wireless communication, and is often used in TV/STB/VCR/DVD/audio equipment remote controls, high-end unlimited toys, garage door remote controls Switches, lighting controls, door remote switches, wireless POS machines, wireless health monitors, wearable monitoring equipment, etc., are widely used and are ideal for long-distance and low-power communication. In addition, because wireless propagation is inversely proportional to frequency, sub-GHz radio frequency transceivers have more advantages in terms of low power consumption, long-distance communication or wall penetration capabilities. Compared with the 2.4GHz band radio frequency transceiver commonly used in the prior art, the frequency band of the Sub-GHz band radio frequency transceiver is not only less interference, but also has obvious energy saving effect and good penetration, which can improve the overall performance of the network To reduce the number of retransmissions during transmission. In summary, the use of Sub-GHz radio frequency transceivers can ensure the signal transmission and reception of electronic signage in the workshop, making it suitable for use in the workshop. Among them, the Sub-GHz band radio frequency transceiver can be realized by the Si4463 radio frequency transceiver.

In a specific implementation, the electronic signage provided by the embodiment of the present disclosure further includes: a wake-up button and a page update button. The wake-up button and the page update button are both arranged on the side of the screen of the electronic ink screen 2 and respectively Connected to the microcontroller 1; wherein, the wake-up button is used to transmit a wake-up signal to the microcontroller 1, and the microcontroller 1 receives the wake-up signal and then powers the electronic ink screen 2 again. The page update button is used to send a page update signal to the microcontroller 1, and the microcontroller 1 switches the current display screen of the electronic ink screen 2 after receiving the page update signal.

Specifically, the program for realizing the functions of the wake-up button and the page update button can directly use the program in the prior art and be directly stored in the microcontroller 1 or stored in a storage device connected to the microcontroller 1. Or, the wake-up button and the page update button are directly connected to the pins of the microcontroller 1 with the corresponding wake-up function and page update function, and then when the wake-up button and the page update button are pressed, the corresponding wake-up screen or screen update can be realized The function of displaying information.

In a specific implementation, the electronic signage provided by the embodiment of the present disclosure further includes: a secondary battery, and the secondary battery is used to power the electronic signage.

Specifically, the secondary battery may be a rechargeable lithium battery, a rechargeable lithium ion battery, a rechargeable nickel-hydrogen battery or a rechargeable nickel-cadmium battery, and the secondary battery is preferably a rechargeable lithium ion battery. Through the installation of the secondary battery, the wiring of the electronic signage can be omitted, which can further facilitate the installation of the electronic signage in the workshop, and solve the trouble caused by laying the wires. In addition, the electronic signage can retain the structure of the electric wire connection, that is, the electric wire and plug are reserved, which can be used to charge the secondary battery, or used for the station where the electronic signage is installed with an electrical connection socket.

In a specific implementation, the electronic billboard provided by the embodiment of the present disclosure further includes: at least one electrical connection interface, the electrical connection interface is arranged on the side of the electronic ink screen 2 and connected to the microcontroller 1.

Specifically, the electrical connection interface can be a commonly used USB interface, an interface that can read a TF card (flash memory card), used to connect a TF card or a USB flash drive to activate the electronic signage in the initialization state, and used when there is no network. Input information to the microcontroller 1 through a TF card or a USB flash drive, that is, input process information and personnel information related to production.

In a specific implementation, the electronic signage provided by the embodiment of the present disclosure further includes: a mounting bracket, which is arranged on the side of the electronic ink screen 2 opposite to the screen, and is used to install the electronic signage on a predetermined position.

Specifically, the mounting bracket may be a rack that can hang the electronic signage on the wall, desktop, or the surface of the machine shell, preferably a rack that can be installed on the wall, so that the electronic signage can not only be installed conveniently, but also can reduce the space required. Of occupation.

Fig. 2 is a schematic structural diagram of an electronic signage system provided by an embodiment of the present disclosure.

The second embodiment of the present disclosure proposes an electronic signage system. As shown in FIG. 2, it includes: an electronic signage 10, a gateway 20, and a server 30; as shown in FIG. 1, the electronic signage includes: a microcontroller 1, an electronic ink The screen 2, the wireless transmission device 3 and the near field communication device 4; the electronic ink screen 2, the wireless transmission device 3 and the near field communication device 4 are respectively connected to the microcontroller 1; wherein the microcontroller 1 passes through The near field communication device 4 reads user information, sends the user information and receives input information from the server through the wireless transmission device 3, the microcontroller 1 controls the electronic ink screen 2 to display the input information, and Control the electronic ink screen 2 to power off after displaying the input information. Wherein, the gateway 20 connects the electronic signage 10 and the server 30 together.

Specifically, the electronic signage described in the second embodiment can directly use the electronic signage provided in the first embodiment, and the specific implementation structure can refer to the related content described in the first embodiment, and will not be repeated here.

The electronic kanban system provided by the embodiment of the present disclosure may include multiple electronic kanbans 10, which are connected by the gateway 20 and the server 30 to form an overall system, for example, the electronic kanbans 10 corresponding to all employees in the entire factory or workshop Connected together, in this way, the electronic billboard 10 can replace the paper medium, and realize the functions of dispatching the work tasks of the employees, displaying the matters needing attention, and realizing the working hours recording of the employees. In addition, the display screen of the electronic billboard 10 is an electronic ink screen 2, which can continue to display required information in the event of a power failure, which is especially suitable for displaying information that needs to be statically displayed such as work content and process flow in the workshop, effectively solving the waste of electric energy. The electronic billboard is controlled by the microcontroller 1. The display drive system based on the microcontroller 1 has low circuit complexity and achieves a lower total system cost, that is, reduces the overall cost of the electronic billboard. The electronic billboard adopts the wireless transmission device 3 for information input. Compared with the liquid crystal display device in the prior art, which needs to be connected with complicated wires, the electronic billboard provided by the embodiment of the present disclosure does not require wiring, which has the technical effect of easy installation, and is especially suitable In an environment with many production equipment in the factory floor. In addition, the electronic signage is also provided with a near field communication device 4, which can read the user's identity information and verify it through the microcontroller 1 or the server, so that the electronic signage can realize the function of displaying specific information for a specific user.

The electronic billboard provided by the embodiment of the present disclosure has an electronic ink screen, which can continue to display the required information in the event of a power failure, and is particularly suitable for displaying information that needs to be statically displayed such as work content and process flow in the workshop, effectively solving electrical energy Waste. The electronic billboard is controlled by a microcontroller, and the display drive system based on the microcontroller has low circuit complexity and achieves a lower total system cost, that is, reduces the overall cost of the electronic billboard. The electronic billboard uses a wireless transmission circuit to input information. Compared with the liquid crystal display device in the prior art, which needs to be connected with complex wires, the electronic billboard provided by the embodiments of the present disclosure does not require wiring, which has the technical effect of easy installation, and is especially suitable In an environment with many production equipment in the factory floor. In addition, the electronic billboard is also provided with a near field communication circuit, which can read the user's identity information and verify it through a microcontroller or a server, thereby enabling the electronic billboard to realize the ability of a specific user to display specific information.

FIG. 3 is a schematic flowchart of another control method of an electronic signage system provided by an embodiment of the present disclosure.

As shown in FIG. 3, the control method of an electronic signage system proposed by an embodiment of the present disclosure can be applied to the aforementioned electronic signage system.

S301. Read user information, and send the user information to the server.

Specifically, this process is the identity information input of the user's identity recognition process. The user can transfer personal information to the microcontroller of the electronic signage by swiping the card. For example, the user communicates with the electronic signage using a terminal device that matches the near field communication device of the electronic signage, specifically using a terminal that also has a near field communication function. Close to the electronic billboard, and then transmit the user information stored in the terminal to the microcontroller, and then the microcontroller sends the user information to the gateway by controlling the wireless transmission device, and finally the gateway sends the user information to the server. This process can be All are wireless transmission, or wireless transmission between the electronic billboard and the gateway, and wired transmission between the gateway and the server.

S302. Match the user information with information pre-stored in the database of the server, and if the matching is successful, the server sends input information corresponding to the user.

Specifically, the user information database can be pre-established or stored in the server, for example, the entire workshop or the entire factory employee database, so that when the user information is read, it can be directly compared with the information in the database, and when the matching is successful, the corresponding After pre-stored user information, the server can send the matched user information to the electronic billboard for display, and send the work information corresponding to the user to the electronic billboard, that is, send the input information to the electronic billboard, such as work flow, management specifications , Installation process and other work information is sent to the electronic billboard.

Among them, the user information pre-stored in the database may include the user's job number, working hours, job type, position and other information.

S303. The microcontroller receives the input information and controls the electronic ink screen to display the information, and then cuts off the power supply to the electronic ink screen.

Specifically, the process of controlling the display of the electronic ink screen by the microcontroller includes activating the electronic ink screen, inputting display information to the electronic ink screen, and powering off the electronic ink screen even if the electronic ink screen is in a sleep state. The above-mentioned control method is a general method for the controller to control the display device to display information, and the specific implementation method will not be repeated.

The method provided by the embodiments of the present disclosure, which is applied to an electronic signage system, can control the electronic signage system to verify the user and display the work information corresponding to the user, thereby realizing the overall control of the entire factory. In addition, the display of the electronic billboard is an electronic ink screen, which can continue to display the required information in the event of a power failure. It is especially suitable for displaying information that requires static display such as work content and process flow in the workshop, effectively solving the waste of electric energy. The electronic billboard is controlled by a microcontroller, and the display drive system based on the microcontroller has low circuit complexity and achieves a lower total system cost, that is, reduces the overall cost of the electronic billboard. The electronic billboard uses a wireless transmission device to input information. Compared with the liquid crystal display device in the prior art, which needs to be connected with complex wires, the electronic billboard provided by the embodiments of the present disclosure does not require wiring, which has the technical effect of easy installation, and is especially suitable for In an environment with many production equipment in the factory floor. In addition, the electronic signage is also equipped with a near field communication device, which can read the user's identity information and verify it through a microcontroller or server, so that the electronic signage can realize the function of displaying specific information for a specific user.

In a specific implementation, the method provided by the embodiment of the present disclosure further includes: while the server sends out the input information corresponding to the user, recording the time when the user information is read, and taking this time as the user Start time of work.

Further, the method provided by the embodiment of the present disclosure further includes: reading the user information again, and sending the user information read again to the server, and the server will read the user information again As the user’s end working time, the user’s working time is counted at the same time; the server sends the user’s working time information to the microcontroller, and the microcontroller controls the electronic ink screen to display the working time Information, and then cut off the power supply to the electronic ink screen.

Specifically, the addition of the function of recording user working hours enables the electronic kanban system to evaluate employees and realize the combination of multiple functions. Furthermore, factories or workshops that use the electronic kanban system can cancel the regular employee check-in equipment at work. The cost of equipment is saved, and after the check-in assessment function is combined with the information display function, employees need to perform identity verification before they need the electronic billboard to display work information, which prevents employees from forgetting to check-in.

Fig. 4 is a flowchart of a method for controlling an electronic signage provided by an embodiment of the present disclosure. This control method is applicable to the electronic signage of any of the above embodiments.

In step S401, it is determined whether the electronic signage has been activated, if so, step S406 is executed to enter the card reading mode, otherwise, step S402 is executed to enter the factory mode.

In step S402, the factory mode is entered. Before leaving the factory, pictures (such as operation process drawings, part structure drawings, circuit assembly drawings, etc.) can be written into the internal memory of the electronic signage through the TF card. In the factory mode, the electronic signage is in a dormant state. In the dormant state, the components of the electronic billboard are in a dormant or power-off state. When the electronic signage is installed on site, it needs to be activated.

In step S403, it is determined whether an activation event has occurred, if so, step S404 is executed to enter the registration mode, otherwise, step 407 is executed to enter the sleep state. Examples of activation events include, but are not limited to, long pressing of an activation button (also referred to as a wake-up button), such as pressing for more than a preset duration (for example, 3 seconds).

In step S404, the registration mode is entered. In the registration mode, the gateway is in the broadcast state, and the electronic billboard scans the gateway and selects the gateway that meets the predetermined conditions to register.

In step S405, it is determined whether the registration is successful, if so, step S406 is executed to enter the card reading mode, otherwise, step S407 is executed to enter the sleep state.

In step S406, the card reading mode is entered, and then the electronic signage enters a dormant state, waiting to be awakened. In the card reading mode, once the electronic signage is awakened, the electronic signage can read user information (such as the card number of the user's NFC card) in response to the user's NFC card swiping operation, and send the user information to the server, and the server generates a response to the user information Input information (such as but not limited to the user's work content number, name, ID, etc.) and send it to the electronic billboard, and the electronic billboard displays the received input information on its electronic ink screen.

In step S407, the sleep state is entered.

Hereinafter, an example operation in the registration mode in the control method of FIG. 4 will be described with reference to FIG. 5. As shown in Fig. 5, the operation in the registration mode includes steps S501 to S505.

In step S501, the gateway is scanned periodically. When configuring the system on site, you can configure the working channel of the gateway according to the RF signal status of the current site to avoid wireless signal conflicts. For example, the working frequency bands of gateways and electronic billboards can include 10 frequency bands preset around the 433MHz frequency point. In the registration mode, all gateways are in the broadcast state (the content of the gateway broadcast can include the chip ID and number of the gateway itself), and the electronic signage can traverse and listen to several pre-configured channels, for example, each channel is fixed for 100 seconds. , Wake up and listen for 400ms every 10 seconds to avoid channel congestion caused by centralized registration of multiple electronic billboards and increased power consumption caused by continuous listening.

In step S502, a valid gateway is determined among the scanned gateways. If there is no valid gateway among the scanned gateways, step S4025 is executed, and if there is, step S503 is executed.

In step S503, a list of valid gateways is stored. For example, the electronic billboard can count the RSSI signal strength and times of all the gateway broadcast information searched within 100 seconds, and then store it in the external flash memory in the form of a table (gateway-channel-RSSI) in order of communication quality from strong to weak.

In step S504, in the list of valid gateways, a gateway meeting a predetermined condition is selected for registration. For example, after completing the gateway search and storage, the electronic billboard can send registration information to the gateway with the best communication quality, and enter the receiving state to wait for the gateway to reply. If no reply from the gateway is received within 200ms, add a random delay (0-50ms) and re-register, and so on until the gateway replies to the registration confirmation.

According to the above method, since the wake-up time during the installation of the electronic billboard is random, and the registration time is also random, the probability of conflicts when multiple electronic billboards are registered is low. After the registration and binding of the electronic signage and the gateway is completed, a simple cellular network is formed. After the electronic billboard is successfully registered, the electronic billboard can send out prompt information (for example, make the three-color light set on the electronic billboard flash green twice), and then modify the internally stored working mode to the card reading mode and enter the deep sleep state again.

The operation in the card reading mode in the control method of FIG. 4 will be described below with reference to FIG. 6. As shown in FIG. 6, the operation in the card reading mode includes steps S601 to S614.

In step S601, it is determined whether a wake-up event occurs. After entering the card reading mode, the electronic signage enters the dormant state to wait to be awakened. In this step, if a wake-up event occurs, step S602 is executed to wake up the electronic signage, otherwise, step S613 is executed to continue to maintain the dormant state. Examples of wake-up events include, but are not limited to, pressing the activation button for a short time, for example, the pressing time is shorter than the first preset duration (for example, 1 second).

In step S602, the electronic signage is awakened. For example, the electronic signage can be awakened for a preset time (for example, 5 seconds) to wait for the card swiping event.

In step S603, it is determined whether an NFC card swiping event has occurred, if so, step S604 is executed to report user information, otherwise, step S613 is executed to continue to maintain the dormant state. For example, when the user swipes the NFC card near the electronic signage, the electronic signage can read the information (such as the card number) of the NFC card.

In step S604, user information is reported. For example, an electronic signage can send the NFC card information as user information to the registered binding gateway, and the gateway forwards it to the server. In some embodiments, the electronic signage can also send other information (such as the battery level of the electronic signage) together with the information of the NFC card as user information to the server.

In step S605, input information for the user information is received. After the server receives the user information from the electronic bar, it can generate input information for the user information, such as the employee’s work content number, name, ID, battery power, etc., and send the input information to the electronic Kanban for display.

In step S606, the received input information is displayed. The electronic billboard can display the input information received from the server on its electronic ink screen. For example, the electronic billboard can read the stored work content image according to the work content number and display it on the electronic ink screen, and at the same time superimpose the employee name, ID, battery power and other information on the work content image for display. After the above information is displayed on the electronic ink screen, the power supply to the electronic ink screen can be cut off, and the electronic ink screen will maintain the displayed image.

In step S607, the monitoring mode is entered.

Entering the monitor mode does not modify the stored card reading mode. In monitoring mode, the electronic signage can shake hands with the gateway every 15 seconds. According to whether there is a transmission signal on the current channel, the handshake, for example, repeats transmission 3 times at an interval of 200 ms at most. If the handshake fails more than 5 consecutive times, the gateway can mark and record the electronic billboard, and the electronic billboard can automatically enter the dormant state. The handshake frame can also contain battery power information. When the battery power is low, the server can give a charging prompt, and the electronic signage can be charged using MicroUSB.

In the listening mode, if the NFC swipe event does not occur again within a predetermined time (for example, within a day) (for example, because the user does not check in after get off work), the server can add a timeout instruction to the handshake frame, and the electronic signboard receives the timeout instruction (step After S614), step S611 is executed to report user information and enter the sleep state.

In the communication process, the gateway and the electronic signage can detect the RSSI value of the Sub-GHz channel within 4 bit time before sending the signal. If it is higher than the set threshold (for example -90Db), it indicates that there is signal transmission at the working frequency and delay Continue to detect the channel after 200ms; if it is lower than the set threshold, send the signal directly.

Then, the method proceeds to steps S608 to S611 to wait for waking up and swiping the card again.

In step S608, similar to step S601, it is determined whether a wake-up event occurs again.

In step S609, similar to step S602, the electronic signage is awakened again.

In step S610, similar to step S603, it is determined whether the NFC card swiping event occurs again, if so, step S611 is executed to report user information again, otherwise, step S613 is executed to return to the sleep state.

In step S611, similar to step S604, user information is reported again.

In step S612, the confirmation message is received. After receiving the user information again (ie, swiping card information after get off work), the server replies to the electronic signage for confirmation. In some embodiments, the server may calculate the working hours of the user based on the time of receiving the user information twice, and send the working hours to the electronic billboard for display on the electronic ink screen.

In step S613, the sleep state is entered.

In order to ensure the user experience, the activated electronic billboard needs to display the corresponding work content as soon as possible, so its interaction with the gateway is carried out continuously at short intervals (for example, 200ms), and will not stop until both parties confirm. Similarly, the randomness of the employee's card swiping time, the certain randomness of the detection channel and the sending time of the electronic billboard and the gateway before sending, can ensure that a large number of electronic tags can be displayed in a short time. In the card reading mode, the electronic signage can be connected to each gateway in sequence according to the RSSI signal strength. If all the gateways in the table cannot be connected, it will enter the dormant state.

Through the above method, the electronic billboard realizes targeted information presentation to users in a simpler and more power-saving way. For example, when an employee starts to work, short press the activation button, and then swipe the NFC card. After the NFC card is read by the electronic signage, the employee’s work content image (such as an image containing information such as operating procedures and safety tips) will be combined with the employee’s name, ID, Information such as battery level is displayed on the electronic ink screen. When the employee finishes work, activate the electronic billboard again and swipe the NFC card. The electronic billboard can report the end of work time to the server to calculate the working time. If the employee forgets to swipe the card after get off work, the electronic signage can also automatically enter the dormant state to save power.

In some embodiments, if the user needs to modify the picture, the new picture can be updated and stored through the picture update button on the TF card and the electronic billboard. In some embodiments, if it is necessary to work with the new gateway, the user can long press the activation button for a preset time (for example, more than 10 seconds) to delete the originally stored gateway list and modify it to the registration mode. In some embodiments, if a new electronic billboard joins an existing system, the active join method is adopted, that is, short pressing the preset number of times (for example, 3 times) to activate the button, and the electronic billboard actively sends out registration information in 10 channels in turn. After the gateway receives the registration information, it responds with a confirmation message containing the signal strength (RSSI). The electronic billboard selects and stores the corresponding gateway according to the signal strength and the number of receptions to complete the registration, and then enters the normal working process. The automatic frequency hopping function of the system, that is, if the monitoring success rate of the electronic billboard under the statistical jurisdiction of the gateway becomes low, the channel switching broadcast for 150 seconds will be started (the new channel can be the third adjacent channel to the right of the current working channel) If the electronic billboard receives the gateway channel switching broadcast instruction, it will save the new channel parameters, set the timer to wake up after 3 minutes, and enter the dormant state, and restart the connection with the gateway's listening mode after waking up again.

The above are only the embodiments of the present disclosure and are not intended to limit the present disclosure in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present disclosure still belong to the technology of the present disclosure. Within the scope of the program.

Claims

An electronic signage, including:

Electronic ink screen;

Wireless transmission circuit;

Near field communication circuit; and

The microcontroller is connected to the electronic ink screen, the wireless transmission circuit, and the near field communication circuit, and is configured to read user information through the near field communication circuit, and through the wireless The transmission circuit sends the user information and receives input information, controls the electronic ink screen to display the input information, and powers off the electronic ink screen after the electronic ink screen displays the input information.
The electronic signage according to claim 1, wherein the wireless transmission circuit is a radio frequency transceiver.
The electronic signage according to claim 1, wherein the radio frequency transceiver operates in the Sub-GHz frequency band.
The electronic signage according to claim 2, further comprising:

A wake-up button, the wake-up button is arranged on the side of the electronic ink screen and connected to the microcontroller;

Wherein, the wake-up button is configured to transmit a wake-up signal to the microcontroller, and the microcontroller is also configured to respond to the wake-up signal again after the electronic ink screen is powered off. Screen power supply.
The electronic signage according to claim 2, further comprising: a page update button, the page update button is arranged on the side of the electronic ink screen and connected to the microcontroller;

Wherein, the page update button is configured to send a page update signal to the microcontroller, and the microcontroller is further configured to update the content displayed on the electronic ink screen in response to the page update signal.
The electronic signage according to claim 1, further comprising:

The secondary battery is configured to supply power to the electronic signage.
The electronic signage according to claim 1, further comprising:

At least one electrical connection interface, the electrical connection interface is arranged on the side of the electronic ink screen and connected to the microcontroller.
The electronic signage according to claim 1, further comprising:

A mounting bracket, the mounting bracket is arranged on the side of the electronic billboard opposite to the electronic ink screen, and the mounting bracket is configured to install the electronic billboard at a predetermined position.
An electronic signage system, including:

At least one electronic billboard according to any one of claims 1-8;

Gateway; and

A server, which is connected to the electronic signage via the gateway.
The electronic signage system according to claim 9, wherein the server is configured to:

Receiving user information from the electronic billboard; and

The user information is matched with the information pre-stored in the database of the server, and the input information for the user information is sent to the electronic billboard in response to a successful matching.
The kanban system according to claim 10, wherein the server is further configured to:

In response to a successful match, the time when the user information is received is used as the user's start working time;

In response to receiving the user information from the electronic billboard again after the matching is successful, the time when the user information is received again is used as the end working time of the user;

Determine the user’s working time length information according to the user’s starting working time and the user’s ending working time;

Sending the user’s working hours information to the electronic billboard,

Wherein, the microcontroller of the electronic signage is further configured to receive the user’s working time information through the wireless transmission circuit, control the electronic ink screen to display the working time information, and display it on the electronic ink screen After the information of the working time length, the power supply to the electronic ink screen is cut off.
An electronic signage control method according to any one of claims 1 to 8, comprising:

Read user information through the near field communication circuit;

Sending the user information and receiving input information through a wireless transmission circuit;

Controlling the electronic ink screen to display the input information; and

After the electronic ink screen displays the input information, the electronic ink screen is powered off.
The control method according to claim 12, further comprising: activating the electronic signage before reading user information through a near field communication circuit.
The control method according to claim 13, wherein said activating said electronic signage comprises:

In response to activation events, periodically scan the gateway;

Determine the valid gateway among the scanned gateways; and

Register with the valid gateways that meet the preset conditions.
The control method according to claim 12, further comprising: entering a listening mode after powering off the electronic ink screen, and periodically shaking hands with the registered gateway in the listening mode.
The control method according to claim 15, further comprising:

In response to reading the user information again through the near field communication circuit in the listening mode, sending the user information again; and

Receive the user's working time information, control the electronic ink screen to display the working time information, and cut off the power supply to the electronic ink screen after the electronic ink screen displays the working time information.
A control method of an electronic signage system according to any of claims 9 to 11, comprising:

The electronic billboard reads user information and sends it to the server via the gateway;

The server receives user information from the electronic billboard, matches the user information with information pre-stored in the server's database, and sends input information for the user information to the electronic billboard in response to a successful match; and

The electronic billboard controls the electronic ink screen of the electronic billboard to display the input information, and powers off the electronic ink screen after the electronic ink screen displays the input information.
The control method according to claim 17, further comprising:

In response to a successful match, the server uses the time when the user information is received and the electronic signage is the user's start time, and in response to receiving the user information from the electronic signage again after the match is successful, The time when the user information is received again is used as the end working time of the user;

The server determines the user's work duration information according to the user's start working time and the user's end working time.
The control method according to claim 18, further comprising:

The server sends the user's working time information to the electronic signage;

The electronic billboard receives the user's working time information, controls the electronic ink screen to display the working time information, and cuts off the power supply to the electronic ink screen after the electronic ink screen displays the working time information.