AU2020101340A4 - A method of dimming by monitoring circuit waveform - Google Patents
A method of dimming by monitoring circuit waveform Download PDFInfo
- Publication number
- AU2020101340A4 AU2020101340A4 AU2020101340A AU2020101340A AU2020101340A4 AU 2020101340 A4 AU2020101340 A4 AU 2020101340A4 AU 2020101340 A AU2020101340 A AU 2020101340A AU 2020101340 A AU2020101340 A AU 2020101340A AU 2020101340 A4 AU2020101340 A4 AU 2020101340A4
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- AU
- Australia
- Prior art keywords
- waveform
- light sources
- master dimmer
- circuit
- truncated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention relates to a method of dimming light sources by monitoring the circuit waveform, in
which the main AC power supply, light sources and a master dimmer are connected in series to form
a closed circuit, and one or multiple slave modules are connected in parallel with the master
dimmer. The master dimmer acts as the main controller that controls the brightness of the light
sources. The master dimmer operates by truncating a section of each half-cycle waveform flowing
through its own circuit, for leading edge the waveform is truncated at the front and for trailing edge
the waveform is truncated at the back portion. The slave module truncates each half-cycle waveform
flowing through its own circuit, so that a section of signal pulse remains. This remaining signal
waveform corresponds to the truncated section of the master dimmer.
*1-4
.CI
Description
*1-4
COMPLETE SPECIFICATION Innovation Patent
Invention Title: A method of dimming by monitoring circuit waveform
This innovation relates to a method of dimming light sources by monitoring circuit waveform.
At present, the dimming of light sources is typically controlled by dimmers which includes a dimmer circuit and user interface for controlling the amount of power to the light sources. In some applications, there may be a need for more than one user interface to control the light sources. For example, in staircases, corridors, and rooms with multiple entries. Existing solution requires the user to install a master dimmer for controlling the light sources and at least one or multiple slave dimmer inputs.
The slave dimmers communicate with the master dimmer through a data line and a communication protocol is formed between the master dimmer and the slave dimmers. When the user wants to brighten or dim the light sources, he can operate from any of the slave dimmers which then sends the dimming signal to the master dimmer.
The master dimmer then increases or decreases the brightness of the light sources respectively. However, this method is costly in terms of additional wiring cables between the master dimmer and the slave dimmers and the labour involved in installing the cables.
Other solution works by wirelessly transmitting signal between the master dimmer and slave dimmers. However, this method requires installing a wireless transmission module in the each of the master and slave dimmers, which results in increased complexity of the circuits. This also leads to increase in cost and size of the dimmers.
The purpose of the invention is to overcome the above-mentioned shortcomings of the prior art, and to provide a dimming method with a simple low-cost structure which can be easily installed by users.
The object of the present invention can be achieved by the following technical solution: a method of dimming light sources by monitoring the circuit waveform, in which the main AC power supply, light sources and a master dimmer are connected in series to form a closed circuit, and one or multiple slave modules are connected in parallel with the master dimmer.
The master dimmer acts as the main controller that controls the brightness of the light sources. The master dimmer operates by truncating a section of each half-cycle waveform flowing through its own circuit, for leading edge the waveform is truncated at the front and for trailing edge the waveform is truncated at the back portion.
The slave module truncates each half-cycle waveform flowing through its own circuit, so that a section of signal pulse remains. This remaining signal waveform corresponds to the truncated section of the master dimmer.
The master dimmer monitors the signal pulses of all the slave modules. When it detects a signal pulse output from a slave module, it adjusts the brightness of or switches on/off the light sources. On the other hand, when no signal pulse is detected, the light sources stay in its original state.
The master dimmer truncates a section of each half-cycle waveform, while the slave module generates signal pulses that superimposed on the truncated waveform of the master dimmer to form the power supply for the light sources.
This solution offers the following advantages as compared to the prior art:
- The master dimmer detects the wave signal transmitted by the slave modules in the power supply circuit in order to achieve dimming control of the light sources. - It eliminates the need to design a dedicated channel for signal transmission between the master dimmer and slave modules, thereby simplifying the design of dimming circuit structure, reducing cost and facilitating ease of installation.
Figure 1 is a structural diagram of the dimming system used in the present invention;
Figure 2 shows the alternating current (AC) waveform after rectification in the dimming method of the present invention;
Figure 3 is an electrical wave diagram of the master dimmer of the present invention after truncating the front end of the half-cycle AC waveform.
Figure 4 is an electrical wave diagram of the signalling pulses formed by truncating the half-cycle AC waveform of the slave module of the present invention.
The following is a further description of the present invention.
The method of dimming light sources by monitoring the circuit waveform, in which the main AC power supply, light sources and a master dimmer are connected in series to form a closed circuit, and one or multiple slave modules S1-Sn are connected in parallel with the master dimmer (shown in Figure 1).
The master dimmer M acts as the main controller that controls the brightness of the light sources. The master dimmer M operates by truncating a section of each half-cycle waveform flowing through its own circuit (shown as 1 in Figure 3).
The slave modules S1-Sn truncate each half-cycle waveform flowing through its own circuit, so that a section of signal pulse remains (shown as 2 in Figure 4). This remaining signal waveform corresponds to the truncated section of the master dimmer.
The master dimmer M monitors the signal pulses of all the slave modules S1 Sn. When it detects a signal pulse output from a slave module (S-Sn), it adjusts the brightness of or switches on/off the light sources. On the other hand, when no signal pulse is detected, the light sources stay in its original state.
The master dimmer M truncates a section of each half-cycle waveform, while the slave modules (Si-Sn) generate signal pulses that superimposed on the truncated waveform of the master dimmer to form the power supply for the light sources.
This dimming method works in conjunction with a microcontroller unit (MCU) to achieve dimming control. For example, when a user presses and holds the touch switch on a slave module (S-Sn), a continuous signal pulses will be generated in the power supply circuit. At this time, the dimming controller M detects the signal pulses in the power supply circuit and responds by increasing or decreasing the conduction current to the light sources and hence brightening or dimming the light source.
The microcontroller unit (MCU) can be customized to suit user's preference. When the current state of the light sources is ON and the user presses the slave module, the slave module will send a sequence of signal pulses to the power supply circuit. The MCU detects the signal pulses and then instructs the master dimmer M to turn off the light. Conversely, if the current state is OFF and when the user presses the slave module again, the MCU receives and detect the signal waves and then instructs the master dimmer M to turn on the light.
By using the above solution, there is no need for additional signal transmission channel. The main component required is a master dimmer M that continuously detects the signal pulses in the power supply circuit to control the brightness of the light sources. This solution is inexpensive and simple in terms of designing the dimming circuit.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention in any form. It is possible for anyone familiar or skilled in this field of invention to make changes to the present invention by using the methods and technical contents disclosed above or modify them to be equivalent. As such, the modified equivalent made according to the shape, structure and principle of the present invention should adhere to the scope of the technical solutions of the present invention.
Claims (3)
1. a method of dimming light sources by monitoring the circuit waveform, in which the main AC power supply, light sources and a master dimmer are connected in series to form a closed circuit, and one or multiple slave modules are connected in parallel with the master dimmer.
The master dimmer acts as the main controller that controls the brightness of the light sources. The master dimmer operates by truncating a section of each half-cycle waveform flowing through its own circuit, for leading edge the waveform is truncated at the front and for trailing edge the waveform is truncated at the back portion.
The slave module truncates each half-cycle waveform flowing through its own circuit, so that a section of signal pulse remains. This remaining signal waveform corresponds to the truncated section of the master dimmer.
The master dimmer monitors the signal pulses of all the slave modules. When it detects a signal pulse output from a slave module, it adjusts the brightness of or switches on/off the light sources. On the other hand, when no signal pulse is detected, the light sources stay in its original state.
The master dimmer truncates a section of each half-cycle waveform, while the slave module generates signal pulses that superimposed on the truncated waveform of the master dimmer to form the power supply for the light sources.
2. A method of dimming by monitoring the circuit waveform according to claim 1, wherein the master dimmer truncates a section of each half-cycle waveform.
3. A method of dimming by monitoring the circuit waveform according to claim 1, wherein the signal pulse generated by the slave module and the truncated waveform generated by the master dimmer are superimposed to form the power supply for the light sources.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNCN202010267778.4 | 2020-04-08 | ||
| CN202010267778.4A CN111491420A (en) | 2020-04-08 | 2020-04-08 | Dimming method for realizing dimming through monitoring circuit waveform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2020101340A4 true AU2020101340A4 (en) | 2020-08-20 |
Family
ID=71812614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020101340A Ceased AU2020101340A4 (en) | 2020-04-08 | 2020-07-13 | A method of dimming by monitoring circuit waveform |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111491420A (en) |
| AU (1) | AU2020101340A4 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112738942A (en) * | 2020-12-31 | 2021-04-30 | 佛山市陆莫斯电子有限公司 | Dimming method capable of adjusting brightness and color temperature simultaneously |
-
2020
- 2020-04-08 CN CN202010267778.4A patent/CN111491420A/en not_active Withdrawn
- 2020-07-13 AU AU2020101340A patent/AU2020101340A4/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN111491420A (en) | 2020-08-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |