LED lighting device, wireless network and control method thereof

• US 9,635,744 B2
• Filed: 12/29/2015
• Issued: 04/25/2017
• Est. Priority Date: 12/30/2014
• Status: Active Grant

• Current Assignee: Sengled Optoelectronics Co., Ltd. (SengLED USA, Inc.)
• Original Assignee: Sengled Optoelectronics Co., Ltd. (SengLED USA, Inc.)
• Inventors: Xu, Yi, Sun, Chaoqun, Shen, Jinxiang
• Primary Examiner(s): TRAN, ANH Q
• Application Number:
  US15/109,011
• Publication Number:
  US 20160366751A1
• Time in Patent Office: 483 Days
• Field of Search: None
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 45/50 responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
• CPC Class Codes: H05B 47/10 Controlling the light source
• CPC Class Codes: H05B 47/19 via wireless transmission

Abstract

The present disclosure provides a first LED lighting device. The first LED lighting device includes a lighting source, a first detecting module, a first processing module, a first wireless communication module for communicating with a wireless router in an LED lighting device-based wireless mesh network, and a second wireless communication module for communicating with at least one second lighting device in the LED lighting device-based wireless mesh network. The first detecting module receives a detection request sent by the second wireless communication module and detects a signal strength of the wireless router based on the detection request. The first processing module sends a start signal to the first wireless communication module. The first wireless communication module receives the start signal, forms a connection with the wireless router based on the start signal, and sends an LED network-forming request to the second wireless communication module.

Claims

1. A first light-emitting diode (LED) lighting device, comprising an LED lighting source;

a first detecting module, a first processing module, a first wireless communication module for communicating with a wireless router in an LED lighting device-based wireless mesh network, and a second wireless communication module for communicating with at least one second lighting device in the LED lighting device-based wireless network, wherein;

the first wireless communication module is connected to the first processing module;

the second wireless communication module is connected to both the first wireless communication module and the first detecting module;

after the second communication module receives a master-light-selecting broadcast message, the first detecting module receives a detection request sent by the second wireless communication module and detects a signal strength of the wireless router based on the detection request;

when the first processing module determines a signal strength detected by the first detecting module has a maximum value among signal strengths detected by the plurality of LED lighting devices in the LED lighting device-based wireless network, the first wireless communication module forms a connection with the wireless router, and sends an LED network-forming request to the second wireless communication module; and

the second wireless communication module sends a master-light-notifying broadcast message to the at least one second LED lighting devices, and forms a connection with the at least one second LED lighting devices, the master-light-notifying broadcast message including an identification of the first LED lighting device.

2. The first LED lighting device according to claim 1, wherein:

the first processing module sends a start signal to the first wireless communication module; and

the first wireless communication module receives the start signal, forms connection with the wireless router based on the start signal, and sends an LED network-forming request to the second wireless communication module.

3. The first LED lighting device according to claim 2, wherein the first processing module comprising a first detecting unit and a first comparing unit, wherein:

the second wireless communication module is connected to the first detecting unit and the first comparing circuit, and the first comparing circuit is connected to the first detecting module and the first wireless communication module;

the first detecting unit determines whether the first LED lighting device is a temporary master light when the second wireless communication module receives a master-light-selecting broadcast message;

if the first LED light is the temporary master light, the first detecting unit sends a temporary-master-light start signal to the second wireless communication module;

the second wireless communication module sends a temporary-master-light broadcast message containing the identification of the first LED lighting device to the at least one second LED lighting devices based on the temporary-master-light start signal, receives signal strengths of the wireless router detected and sent by the at least one second LED lighting devices, and sends the signal strengths of the wireless router detected and sent by the at least one second LED lighting devices to the first comparing circuit;

the first comparing circuit compares the signal strengths sent by the at least one second LED lighting devices with the signal strength detected by the first detecting module; and

if the signal strength detected by the first detecting module has a maximum value among all signal strengths being compared, the first comparing circuit sends the start signal to the first wireless communication module.

4. The first LED lighting device according to claim 3, the first processing module further comprising a first memory connected to the first comparing circuit, wherein:

the first memory is configured to store the signal strengths of the wireless router detected by the plurality of LED lighting devices and obtained by the first LED lighting device during a process of selecting the master light.

5. The first LED lighting device according to claim 4, the first processing module further comprising a second comparing circuit connected to the second wireless communication module, the first wireless communication module, and the first memory, wherein:

the first detecting unit determines whether the first LED lighting device is the temporary master light after the second wireless communication module receives a master-light-selecting broadcast message;

if the first LED lighting device is not the temporary master light, the first detecting unit sends a temporary-master-light-obtaining signal to the second wireless communication module;

the second wireless communication module receives the temporary-master-light-obtaining signal, obtains the signal strength detected by the first detecting module based on the temporary-master-light-obtaining signal;

when the second wireless communication module receives a temporary-master-light-notifying broadcast message containing an identification of a second LED lighting device, the second wireless communication module sends the signal strength detected by the first detecting module to the second LED lighting device based on the identification, receives a master-light-notifying broadcast message containing the identification of the master light sent by the second LED lighting device, and sends the identification of the master light to the second comparing circuit; and

if the second comparing circuit determines the identification of the master light is same as the identification of the first LED lighting device stored in the first memory, the second comparing circuit sends the start signal to the first wireless communication module.

6. The first LED lighting device according to claim 3, the first detecting unit comprising a timer and a flip-flop circuit, wherein:

the timer sets a temporary-master-light operation schedule corresponding to the first LED lighting device such that if an operation time of an LED lighting device starts, the timer sends a triggering signal to the flip-flop circuit; and

the flip-flop circuit receives the triggering signal and indicates whether the first LED lighting device is the temporary master light by controlling flashing of an indicator light or changing color of the indicator light.

7. The first LED lighting device according to claim 3, wherein the first detecting unit comprises a second memory and a third comparing circuit, wherein:

the third comparing circuit is connected to the second memory and the second wireless communication module;

the second memory is configured to store media access control (MAC) addresses of the plurality of LED lighting devices in the LED lighting device-based wireless network; and

the third comparing circuit compares the MAC addresses of the plurality of LED lighting devices to detect whether a MAC address of the first LED lighting device has a maximum value, and the third comparing circuit determines the first LED lighting device to be the temporary master light if the MAC address of the first LED lighting device has the maximum value.

8. The first LED lighting device according to claim 2, wherein the second wireless communication module receives a joining-notifying broadcast message sent by a second LED lighting device joining the LED lighting device-based wireless network such that the second wireless communication module sends a master-light-selecting broadcast message to the at least one second LED lighting device in the LED based wireless network based on the joining-notifying broadcast message.

9. The first LED lighting device according to claim 1, further including a malfunctioning monitoring module connected to the first wireless communication module and the second wireless communication module, wherein:

the first wireless communication module sends a first detection request to the wireless router within a predetermined period after being connected to the wireless router and receives a first feedback signal sent by the wireless router;

the malfunctioning monitoring module monitors whether the first wireless communication module has sent the first detection request within the predetermined period or whether the first wireless communication module has received the first feedback signal sent by the wireless router;

if the malfunctioning monitoring module detects the first wireless communication module has not sent the first detection request within the predetermined period or the first wireless communication module has not received the first feedback signal sent by the wireless router, the malfunctioning monitoring module sends a first master-light-selecting-triggering signal to the second wireless communication module;

the second wireless communication module receives the first master-light-selecting-triggering signal, sends a first master-light-selecting broadcast message to the at least one second LED lighting devices based on the first master-light-selecting-triggering signal; and

when the first LED lighting device recovers, the malfunctioning monitoring module detects a recovery and sends recovery information to the second wireless communication module such that the second wireless communication module sends a second master-light-selecting broadcast message to the at least one second LED lighting devices, wherein the first master-light-selecting broadcast message contains malfunctioning information of the first LED lighting device and the second master-light-selecting broadcast message contains the recovery information of the first LED lighting device.

10. The first LED lighting device according to claim 9, wherein:

after connected to the at least one second LED lighting devices, the second wireless communication module sends a second detection request to the at least one second LED lighting devices within a predetermined period and receives second detecting feedback signals sent by the at least one second LED lighting devices;

the malfunctioning monitoring module monitors whether the second wireless communication module has sent the second detection request within the predetermined period or has received the second detecting feedback signals;

if the second wireless communication module has not sent the second detection request within the predetermined period or has not received the second detecting feedback signals, the malfunctioning monitoring module sends a second master-light-selecting triggering signal to the first wireless communication module; and

the first wireless communication module receives the second master-light-selecting triggering signal and sends a third master-light-selecting broadcast message to the at least one second LED lighting devices based on the second master-light-selecting triggering signal; and

after the first wireless communication module detects a recovery of the first LED lighting device, the first communication module sends a fourth master-light-selecting broadcast message to the at least one second LED lighting devices, the third master-light-selecting broadcast message including malfunctioning information of the first LED lighting device and the fourth master-light-selecting broadcast message including recovery information of the first LED lighting device.

15. An LED lighting device-based wireless mesh network, comprising a wireless router, a first LED lighting device according to any one of claim 1, and at least one second LED lighting device according to any one of claim 11.

16. A method for remotely controlling the LED lighting device-based wireless mesh network according to claim 15, comprising:

the first LED lighting device detecting the signal strength of the wireless router after obtaining a master-light-selecting broadcast message;

if the first LED lighting device determines the signal strength of the wireless router detected by the first LED lighting device has a maximum value among the signal strengths detected by the plurality of LED lighting devices in the LED lighting device-based wireless mesh network, the first LED lighting device forming connection with the wireless router;

the first LED lighting device sending the master-light-notifying broadcast message containing the identification of the first LED lighting device to the at least one second LED lighting devices; and

the second LED lighting device receiving the master-light-notifying broadcast message and forming the connection with the first LED lighting device based on the identification.

17. The method according to claim 16, wherein the first LED lighting device forming connection with the wireless router comprises:

when receiving a master-light-selecting broadcast message, the first LED lighting device determining whether the first LED lighting device is the temporary master light;

if the first LED lighting device is the temporary master light, the first LED lighting device sending a temporary-master-lighting-notifying broadcast message containing the identification of the first LED lighting device to the at least one second LED lighting devices;

the first LED lighting device receiving the signal strengths of the wireless router detected by the at least one second LED lighting devices;

the first LED lighting device comparing the signal strengths detected by the at least one second LED lighting devices with the signal strength detected by the first LED lighting device; and

if the first LED lighting device determines the signal strength detected by the first LED lighting device has a maximum value among signal strengths being compared, the first LED lighting device forms the connection with the wireless router.

18. The method according to claim 17, further comprising:

the first LED lighting device storing the signal strengths of the wireless router detected by the plurality of LED lighting devices and obtained by the first LED lighting device in the process of selecting the master light and uses stored signal strengths to provide signal strengths for another process of selecting of the master light.

19. The method according to claim 16, wherein the first LED lighting device forming connection with the wireless router comprises:

when receiving the master-light-selecting broadcast message, the first LED lighting device determining whether the first LED lighting device is the temporary master light;

if the first LED lighting device is not the temporary master light, when the first LED lighting device receives a temporary-master-light-notifying broadcast message containing the identification of a second LED lighting device sent by the second LED lighting device, the first LED lighting device sending the signal strength of the wireless router detected by the first LED lighting device to the second LED lighting device according to the identification of the second LED lighting device;

the first LED lighting device receiving a master-light-notifying broadcast message containing identification of the master light sent by a second LED lighting device and the first LED lighting device comparing the identification of the master light with previously-stored identification of the first LED lighting device; and

if the identification of the master light is the same as the previously-stored identification of the first LED lighting device, the first LED lighting device forming the connection with the wireless router.

11. A second light-emitting diode (LED) lighting device, comprising:

an LED lighting source, a second detecting module, a second processing module, and a third wireless communication module for enabling communication between a first LED lighting device and the second LED lighting device in an LED lighting device-based wireless mesh network, wherein;

the LED lighting device-based wireless mesh network includes a wireless router, the first LED lighting device, and at least one second LED lighting device;

the third wireless communication module is connected to the second detecting module and the second processing module;

the second detecting module receives a detection request sent by the third wireless communication module after the third wireless communication module receives a master-light-selecting broadcast and detects a signal strength of the wireless router based on the detection request;

when the second processing module determines a signal strength of the wireless router detected by the second detecting module does not have a maximum value among signal strengths detected by the plurality of LED lighting devices in the LED lighting device-based wireless mesh network, the second processing module sends a master-light-obtaining signal to the third wireless communication module; and

the third wireless communication module receives the master-light-obtaining signal, receives a master-light-notifying broadcast message containing identification of the first LED lighting device sent by the first LED lighting device, and forms a connection with the first LED lighting device based on the identification of the first LED lighting device.

12. The second LED lighting device according to claim 11, wherein the second processing module comprises a second detecting unit and a fourth comparing circuit, wherein:

the third wireless communication module is connected to the second detecting unit and the fourth comparing circuit, and the fourth comparing circuit is connected to the second detecting module;

the second detecting unit determines whether the second LED lighting device is a temporary master light after the third wireless communication module obtains a master-light-selecting broadcast message such that if the second LED lighting device is the temporary master light, the second detecting unit sends a temporary-master-light start signal to the third wireless communication module;

the third wireless communication module sends a temporary-master-light-notifying broadcast message containing identification of the second LED lighting device to other LED lighting devices in the LED lighting device-based wireless mesh network based on the temporary-master-light start signal, receives signal strengths of the wireless router detected by the other LED lighting devices, and sends the signal strengths to the fourth comparing circuit; and

the fourth comparing circuit compares the signal strengths detected by the other LED lighting devices with a signal strength detected by the second detecting module such that if the fourth comparing circuit determines that the signal strength detected by the second detecting module does not have a maximum value among signal strengths detected by the plurality of LED lighting devices, the fourth comparing circuit sends a master-light-obtaining signal to the third wireless communication module.

13. The second LED lighting device according to claim 12, wherein the second processing module further comprises a third memory connected to the fourth comparing circuit, wherein:

the third memory is configured to store the signal strengths detected by the plurality of LED lighting devices and obtained by the second LED lighting device when the second LED lighting device is in a process of selecting the master light.

14. The second LED lighting device according to claim 13, wherein the second processing module further comprises a fifth comparing circuit connected to the third wireless communication module and the third memory, wherein:

the second detecting unit determines whether the second LED lighting device is the temporary master light after the third wireless communication module receives a master-light-selecting broadcast message such that if the second LED lighting device is not the temporary master light, the second detecting unit sends a temporary-master-light-obtaining signal to the third wireless communication module;

the third wireless communication module receives the temporary-master-light-obtaining signal, obtains the signal strength of the wireless router detected by the second detecting module based on the temporary-master-light-obtaining signal, sends the signal strength detected by the second detecting module to the temporary master light based on the identification of the temporary master light when receiving a temporary-master-light-notifying broadcast message containing identification of the temporary master light sent by another LED lighting device in the wireless mesh network, receives the master-light-notifying broadcast message containing the identification of the master light sent by the temporary master light, and sends the identification of the master light to the fifth comparing circuit; and

when the fifth comparing circuit determines the obtained identification of the master light differs from the identification of the second LED lighting device stored in the third memory, the fifth comparing circuit sends a master-light-obtaining signal to the third wireless communication module.