Display method of electronic identification device, controller, electronic identification device and system

1. A display method of an electronic identification device, comprising:

controlling the electronic identification device to enter a working state from a sleep state, and obtaining to-be-displayed data; power consumption corresponding to the electronic identification device in the sleep state being lower than power consumption corresponding to the electronic identification device in the working state;

refreshing the to-be-displayed data to an electronic ink screen for display through a serial peripheral interface bus, and controlling the electronic identification device to enter the sleep state again after the refreshing is completed;

the method further comprising:

switching to a corresponding power conversion mode according to a changed device state when a device state changes;

wherein the power coversion mode is a DC-to-DC mode when the device state is the working state; and the power conversion mode is a low dropout regulator mode when the device state is the sleep state.

2. The display method according to claim 1 , wherein controlling the electronic identification device to enter the working state from the sleep state, comprises:

controlling the electronic identification device to enter the working state and establish a WiFi communication with a server when a continuous duration of the sleep state reaches a set duration or charging is completed.

3. The display method according to claim 1 , wherein obtaining the to-be-displayed data, comprises:

sending an inquiry to the server on whether there is to-be-transmitted data that needs to be transmitted, and receiving feedback information;

obtaining the to-be-transmitted data from the server when determining that there is data that needs to be transmitted according to the feedback information;

taking the to-be-transmitted data as the to-be-displayed data when the to-be-transmitted data needs to be displayed immediately; maintaining originally displayed data and storing the to-be-transmitted data in a local non-transitory memory when the to-be-transmitted data does not need to be displayed immediately.

4. The display method according to claim 3 , wherein after receiving the feedback information, the method further comprises:

entering the sleep state directly when determining that no data needs to be transmitted according to the feedback information.

5. The display method according to claim 3 , wherein a communication protocol used in the WiFi communication comprises at least one of TCP, IP, UDP, HTTP, HTTPS, MQTT.

6. The display method according to claim 5 , wherein a configured network of the WiFi communication is switched among different networks through a signal received from a network configuration button.

7. The display method according to claim 1 , wherein after refreshing the to-be-displayed data to the electronic ink screen for display through the serial peripheral interface bus, the method further comprises:

obtaining indication picture data of a corresponding state when any one of a charging state, a power state and a communication state changes;

updating data displayed on the electronic ink screen with the indication picture data.

8. The display method according to claim 7 , wherein obtaining the indication picture data of the corresponding state, comprises:

obtaining indication picture data that charging is being performed in a charging phase.

9. The display method according to claim 8 , wherein after refreshing the to-be-displayed data to the electronic ink screen for display through the serial peripheral interface bus, the method further comprises:

updating data currently displayed on the electronic ink screen with identification data originally displayed on the electronic ink screen when receiving a signal that charging is completed.

10. The display method according to claim 7 , wherein obtaining the indication picture data of the corresponding state, comprises:

obtaining indication picture data of low power when battery power is lower than a set power threshold.

11. The display method according to claim 10 , wherein after refreshing the to-be-displayed data to the electronic ink screen for display through the serial peripheral interface bus, the method further comprises:

updating data currently displayed on the electronic ink screen with identification data originally displayed on the electronic ink screen when receiving a signal that a charging joint is pulled out.

12. The display method according to claim 7 , wherein obtaining the indication picture data of the corresponding state, comprises:

obtaining indication picture data of successful networking when establishing a communication relationship with a server for first time.

13. The display method according to claim 7 , wherein obtaining the indication picture data of the corresponding state, comprises:

obtaining indication picture data of network abnormality when an abnormality occurs in a network.

14. The display method according to claim 13 , wherein after refreshing the to-be-displayed data to the electronic ink screen for display through the serial peripheral interface bus, the method further comprises:

updating data currently displayed on the electronic ink screen with identification data originally displayed on the electronic ink screen when the network returns to normal.

15. A controller of an electronic identification device, performing operation, the operation comprising:

controlling the electronic identification device to enter a working state from a sleep state, and obtaining to-be-displayed data; power consumption corresponding to the electronic identification device in the sleep state being lower than power consumption corresponding to the electronic identification device in the working state;

refreshing the to-be-displayed data to an electronic ink screen for display through a serial peripheral interface bus, and controlling the electronic identification device to enter the sleep state again after the refreshing is completed;

the operations further comprising:

switching to a corresponding power conversation mode according to a changed device state when a device state changes;

wherein the power conversion mode is a DC-to-DC mode when the device state is the working state, and the power coversion mode is a low dropout regulator mode when the device state is the sleep state.

16. An electronic identification device, comprising:

an electronic ink screen, a WiFi communication module, and a power management module;

a controller connected to the electronic ink screen through two serial peripheral interfaces respectively, and connected to the voltage management module through an IO interface; the controller performing operations the operations comprising:

controlling the electronic identification device to enter a working state from a sleep state, and obtaining to-be-displayed data; power consumption corresponding to the electronic identification device in the sleep state being lower than power consumption corresponding to the electronic identification device in the working state;

refreshing the to-be-displayed data to an electronic ink screen for display through a serial peripheral interface bus, and controlling the electronic identification device to enter the sleep state again after the refreshing is completed;

the operations further comprising:

switching to a corresponding power conversation mode according to a changed device state when a device state changes;

wherein the power conversion mode is a DC-to-DC mode when the device state is the working state, and the power coversion mode is a low dropout regulator mode when the device state is the sleep state.