Emergency driver and intelligent module for the emergency driver

1. An emergency driver, comprising:

a digital communication interface configured to receive an input signal via a control bus;

a DC power supply configured to provide a DC output to the control bus; and

a controller coupled to the digital communication interface and the DC power supply and configured to control the emergency driver to operate in a first operation mode,

wherein the input signal received at the digital communication interface is a digital input signal when the emergency driver is operating in the first operation mode, and

wherein the emergency driver is electrically connected between a main power supply and at least one electric load and is configured to provide a backup power supply to the at least one electric load when the main power supply is down.

2. The emergency driver of claim 1 , wherein the digital communication interface is further configured to transmit digital data representative of a status of the emergency driver via the control bus, and

wherein in the first operation mode, the controller is configured to:

turn on the DC power supply constantly;

control the emergency driver to perform a preset operation based on a first digital control command included in the digital input signal; and

control the digital communication interface to transmit the digital data.

3. The emergency driver of claim 2 , wherein in the first operation mode, the controller is further configured to limit the DC power supply in response to a determination that a duration of a low level of the digital input signal exceeds a first preset threshold.

4. The emergency driver of claim 2 , wherein the controller is further configured to control the emergency driver to operate in a second operation mode,

wherein the input signal received at the digital communication interface is an analog signal generated by pressing an external button when the emergency driver is operating in the second operation mode.

5. The emergency driver of claim 4 , wherein

in the second operation mode, the controller is further configured to:

control the emergency driver to perform the preset operation based on a predetermined level characteristic of the analog input signal; and

on/off control the DC power supply in a manner corresponding to the status of the emergency driver.

6. The emergency driver of claim 5 , wherein in the second operation mode, the controller is further configured to control the emergency driver to perform the preset operation in response to a determination that the predetermined level characteristic of the analog input signal satisfies a preset condition.

7. The emergency driver of claim 5 , wherein in the second operation mode, the controller is configured to on/off control the DC power supply in the manner corresponding to the status of the emergency driver when the analog input signal is in a high level.

8. The emergency driver of claim 2 , wherein the status of the emergency driver is obtained by performing the preset operation, or is deduced from other data collected and stored in a memory in the emergency driver previously.

9. The emergency driver of claim 6 , wherein the preset condition is that a duration of a low level of the input signal exceeds a second preset threshold.

10. The emergency driver of claim 6 , wherein the preset condition of the second operation mode is set by a third digital control command included in the input signal when the emergency driver is operating in the first operation mode.

11. The emergency driver of claim 5 , wherein the controller is further configured to:

control the emergency driver to switch between the first operation mode and the second operation mode based on a second digital control command included in the digital input signal, and/or

control the emergency driver to switch between the first operation mode and the second operation mode in response to a determination that an input pattern identified from the analog input signal is a preset mode switch pattern.

12. The emergency driver of claim 5 , wherein the controller is further configured to control the emergency driver to switch between the first operation mode and the second operation mode based on a default resident stored in the controller.

13. The emergency driver of claim 1 , wherein the control bus includes two connection wires, and

wherein the digital communication interface and the DC power supply are coupled to said two connection wires commonly.

14. The emergency driver of claim 13 , wherein the controller is coupled to the digital communication interface via a first wire and a second wire,

in the first operation mode, the controller is configured to receive the input signal via the first wire and transmit the digital data via the second wire, and

in a second operation mode, the controller is configured to receive the input signal via the first wire.

15. The emergency driver of claim 1 , wherein the digital communication interface is Digital Addressable Lighting Interface.

16. The emergency driver of claim 1 , wherein the DC power supply comprises:

a voltage source;

a switch circuit controlled by the controller to on/off control the DC output of the DC power supply; and

a current limit circuit coupled to the switch circuit and configured to limit a current of the DC output of the DC power supply.

17. The emergency driver of claim 16 , wherein the current limit circuit includes at least one transistor.

18. An intelligent module, comprising:

a wireless communication module configured to communicate with a remote device;

a communication interface configured to be connected with an emergency driver and communicate with the emergency driver in a wire manner; and

a controller configured to control the wireless communication module and the communication interface, wherein

when the communication interface is in connection with the emergency driver,

the intelligent module is powered by the emergency driver and includes at least one indicator electrically connected to the controller,

the controller is configured to:

control the communication interface to transmit to the emergency driver, a first digital control command received by the wireless communication module from the remote device; and

control the wireless communication module to transmit to the remote device, digital data received by the communication interface from the emergency driver including data representing a status of the emergency driver; and

control the at least one indicator to operate in a manner corresponding to the status of the emergency driver.

19. The intelligent module of claim 18 , wherein the intelligent module further comprises a button electrically connected to the controller, and

wherein the controller is further configured to:

identify an input pattern from a change in a current of the intelligent module caused by pressing the button;

generate a second digital control command based on the identified input pattern; and

control the communication interface to transmit the generated second digital control command to the emergency driver such that the emergency driver is controlled to perform a preset operation corresponding to the identified input pattern.

20. The intelligent module of claim 18 , wherein the controller is further configured to query a memory of the emergency driver to obtain the status of the emergency driver.

21. The intelligent module of claim 18 , wherein the communication interface is Digital Addressable Lighting Interface.

22. An emergency driver, comprising:

a digital communication interface configured to receive an input signal via a control bus;

a DC power supply configured to provide a DC output to the control bus; and

a controller coupled to the digital communication interface and the DC power supply and configured to control the emergency driver to operate in a first operation mode or a second operation mode,

wherein in the first operation mode, the input signal received at the digital communication interface is a digital signal and the controller is configured to:

turn on the DC power supply constantly;

control the emergency driver to perform a preset operation based on a digital control command included in the input signal; and

control the digital communication interface to transmit digital data representative of a status of the emergency driver, and

wherein in the second operation mode, the input signal received at the digital communication interface is an analog signal and the controller is configured to:

control the emergency driver to perform the preset operation based on a predetermined level characteristic of the input signal; and

on/off control the DC power supply in a manner corresponding to the status of the emergency driver.

23. The emergency driver of claim 22 , wherein in the second operation mode, the controller is configured to control the emergency driver to perform the preset operation in response to the predetermined level characteristic of the analog input signal satisfying a preset condition.

24. The emergency driver of claim 22 , wherein the status of the emergency driver is obtained by performing the preset operation or is deduced from other data collected and stored in a memory in the emergency driver previously.

25. The emergency driver of claim 23 , wherein the preset condition is that a duration of a low level of the input signal exceeds a second preset threshold.

26. The emergency driver of claim 22 , wherein the controller is further configured to:

control the emergency driver to switch between the first operation mode and the second operation mode based on a second digital control command included in the digital input signal, and/or

control the emergency driver to switch between the first operation mode and the second operation mode in response to a determination that an input pattern identified from the analog input signal is a preset mode switch pattern.

27. The emergency driver of claim 22 , wherein the controller is further configured to control the emergency driver to switch between the first operation mode and the second operation mode based on a default resident stored in the controller.

28. The emergency driver of claim 22 , wherein the control bus includes two connection wires, and

wherein the digital communication interface and the DC power supply are coupled to said two connection wires commonly.

29. The emergency driver of claim 27 , wherein the controller is coupled to the digital communication interface via a first wire and a second wire,

in the first operation mode, the controller is configured to receive the input signal via the first wire and transmit the digital data via the second wire, and

in the second operation mode, the controller is configured to receive the input signal via the first wire.