Driver circuit and lighting system for light apparatus

Patent metadata

Field	Value
Publication number	US-11076468-B2
Application number	US-202016798121-A
Country	US
Kind code	B2
Filing date	Feb 21, 2020
Priority date	Nov 1, 2018
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

The lighting apparatus includes a driver circuit and a lighting system. The driver circuit includes a signal receiver module, a signal processing module and a signal execution module. The signal receiver module is configured to receive a parameter signal of a coding device. The signal processing module is connected to the signal receiver module. The signal processing module is configured to convert the parameter signal into a PWM signal. The signal execution module is connected to the signal processing module. The signal execution module is also configured to convert an alternating current input power source into a direct current power source. The direct current power source is filtered based on the PWM signal. In this way, the filtered direct current power source matches a required power source of the lighting apparatus. The lighting apparatus solves low inapplicability and compatibility that occurs in the driver circuit of the convention art.

First claim

The invention claimed is:

1. A driver circuit of a lighting apparatus for communicating with an external coding device, comprising:
a signal receiver module, configured to receive a parameter signal of the external coding device;
a signal processing module, connected to the signal receiver module, and configured to convert the parameter signal into a PWM signal; and
a signal execution module, connected to the signal processing module, configured to convert an alternating current input power source into a direct current power source, and configured to filter the direct current power source, such that the filtered direct current power source matches a required power source of the lighting apparatus;
wherein the signal processing module comprises:
a data comparison unit, connected to the signal receiver module, and configured to retrieve a digital control signal by comparing and amplifying between the parameter signal and a reference data signal;
a PWM signal generation unit, connected to the data comparison unit and the signal execution module, and configured to convert the digital control signal into the PWM signal; and
a signal feedback unit, connected between the data comparison unit and the signal receiver module, configured to generate a feedback signal based on a comparison result between the parameter signal and the reference data signal, and configured to adjust internal data of the parameter signal based on the feedback signal.

2. The driver circuit of claim 1 , wherein the reference data signal is pre-stored by the data comparison unit or generated by a reference source.

3. The driver circuit of claim 1 , wherein the signal processing module further comprises: a signal amplifying unit, connected between the signal receiver module and the data comparison unit, and configured to amplify the parameter signal.

4. The driver circuit of claim 1 , wherein the signal processing module further comprises: an A/D conversion unit, connected between the signal receiver module and the data comparison unit, and configured to convert the parameter signal from an analog signal to a digital signal.

5. The driver circuit of claim 1 , wherein the signal processing module further comprises: a RC filter unit, connected between the PWM signal generation unit and the signal execution module, and configured to RC-filter the PWM signal.

6. The driver circuit of claim 1 , wherein the filtered direct current power source and the required power source of the lighting apparatus meeting the following conditions:
I1=I2; and
V1=V2;
wherein I1 denotes a filtered direct current of the filtered direct current power source, I2 denotes a required current of the required power source, V1 denotes a filtered direct current voltage of the filtered direct current power source, and V2 denotes a required voltage of the required power source.

7. The driver circuit of claim 1 , wherein the coding device comprises a smartphone that supports an NFC coding.

8. The driver circuit of claim 1 , wherein the alternating current input power source comprises an indoor power source.

9. The driver circuit of claim 1 , wherein the lighting apparatus comprises at least one of an incandescent light, a halogen light, a fluorescent light, a low pressure sodium light and a sensor light.

10. A lighting system, comprising:
a coding device;
a lighting apparatus; and
a driver circuit, comprising:
a signal receiver module, configured to receive a parameter signal of the coding device;
a signal processing module, connected to the signal receiver module, and configured to convert the parameter signal into a PWM signal; and
a signal execution module, connected to the signal processing module, configured to convert an alternating current input power source into a direct current power source, and configured to filter the direct current power source, such that the filtered direct current power source matches a required power source of the lighting apparatus;
wherein the signal processing module comprises:
a data comparison unit, connected to the signal receiver module, and configured to retrieve a digital control signal by comparing and amplifying between the parameter signal and a reference data signal;
a PWM generation unit, connected to the data comparison unit and the signal execution module, and configured to convert the digital control signal into the PWM signal; and
a signal feedback unit, connected between the data comparison unit and the signal receiver module, configured to generate a feedback signal based on a comparison result between the parameter signal and the reference data signal, and configured to adjust internal data of the parameter signal based on the feedback signal;
wherein the lighting apparatus is configured to communicate with the coding device via the driver circuit;
wherein the coding device is configured to generate the parameter signal, and configured to adjust an input power source of the lighting apparatus according to the parameter signal, such that the lighting apparatus stays at a required operating status.

11. The lighting system of claim 10 , wherein the reference data signal is pre-stored by the data comparison unit or is generated by a reference source.

12. The lighting system of claim 10 , wherein the signal processing module further comprises: a signal amplifying unit, connected between the signal receiver module and the data comparison unit, and configured to amplify the parameter signal.

13. The lighting system of claim 10 , wherein the signal processing module further comprises: an A/D conversion unit, connected between the signal receiver module and the data comparison unit, and configured to convert the parameter signal from an analog signal to a digital signal.

14. The lighting system of claim 10 , wherein the signal processing module further comprises: a RC filter unit, connected between the PWM signal generation unit and the signal execution module, and configured to RC-filter the PWM signal.

15. The lighting system of claim 10 , wherein the filtered direct current power source and the required power source of the lighting apparatus meet the following conditions:
I1=I2; and
V1=V2;
wherein I1 denotes the filtered direct current of the filtered direct current power source, I2 denotes the required current of the required power source, V1 denotes the filtered direct current voltage of the filtered direct current power source, and V2 denotes the required voltage of the required power source.

16. The lighting system of claim 10 , wherein the coding device comprises a smartphone that supports an NFC coding.

17. The lighting system of claim 10 , wherein the alternating current input power source comprises an indoor power source.

18. The lighting system of claim 10 , wherein the lighting apparatus comprises at least one of an incandescent light, a halogen light, a fluorescent light, a low pressure sodium light and a sensor light.

Assignees

• Xiamen Eco Lighting Co Ltd

Inventors

• Lin Liping
• Yang Wenhui
• Lai Xinghan
• Lan Tian

Classifications

• H05B47/1965

  using handheld communication devices · CPC title

• H05B47/19 Primary

  via wireless transmission · CPC title

• H05B45/325

  Pulse-width modulation [PWM] · CPC title

• H05B47/14 Primary

  by determining electrical parameters of the light source · CPC title