Single-color-temperature and double-color-temperature duplicator system
By combining software and hardware, and employing components such as acquisition units and digital isolators, the problems of high power consumption and difficult isolation in traditional single and dual color temperature replication systems have been solved. This has enabled low-distortion signal replication and high flexibility, making it suitable for high-frequency environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional single and dual color temperature replication systems consume a lot of power, have poor flexibility, and are difficult to effectively isolate the primary and secondary components when acquiring signals in hardware. This results in high hardware costs and complexity, and poor performance, especially in high-frequency applications.
Using a combination of software and hardware, the acquisition unit collects the period and duty cycle values of the first and second PWM signals of the main controller, respectively. Combined with a digital isolator and a discharge circuit, it achieves efficient signal acquisition and replication. The software handles abnormal situations, and the driver circuit controls the color temperature and brightness of the LED string.
It achieves low signal distortion rate signal replication under independent power supply, reduces hardware cost and complexity, improves system flexibility and anti-interference capability, and is suitable for high-frequency applications.
Smart Images
Figure CN224097880U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of LED lighting, especially a single and double color temperature duplicator system. BACKGROUND
[0002] Single color temperature light refers to a light device with fixed color temperature, and the common color temperature value is 3200K (warm light), the light source of this kind of light is stable, and the color temperature is constant, and it is usually used as a standard light source. Double color temperature light refers to a light device that can be adjusted between two different color temperatures, usually between 3200K and 5600K (cool light), by adjusting the LED light source in the light, the double color temperature light can simulate various environment light sources from candlelight to sunlight. When it is necessary to control the state of other lamps and lanterns to be the same as the state of the main controller or the main lamp, the single and double color temperature duplicator system can copy the color temperature, brightness, switch and other states of a main controller to other lamps and lanterns or devices.
[0003] For the traditional single and double color temperature duplication system, most of them use hardware to collect and drive the circuit, such as realizing signal collection through optocoupler, and driving MOS tube after processing. But the power consumption generated by this way is too large, and the flexibility is not strong, and when double color temperature is involved, the dead zone needs to be controlled, the hardware cost also increases, and the switching frequency of the optocoupler is limited, which is not suitable for high frequency occasions. If the hardware implementation scheme is used, it often needs to share the ground to realize it, which cannot well isolate the primary and secondary, and this means that when the primary fails or has a large current, the secondary part may be greatly affected, and the hardware connection will also become complex. UTILITY MODEL CONTENT
[0004] The utility model solves the technical problem of the prior art, and provides a single and double color temperature duplicator system using software and hardware to realize signal collection and duplication of the main controller.
[0005] The utility model adopts the technical scheme for solving the above technical problem: a single and double color temperature duplicator system, comprising a main controller, a collection unit for collecting the color temperature and brightness state of the main controller, a control unit for processing the data collected by the collection unit, and an LED lamp string receiving the data processed by the control unit, characterized in that the collection unit comprises two collection devices for collecting the first PWM signal period value and duty cycle value and the second PWM signal period value and duty cycle value of the main controller respectively.
[0006] The acquisition device has various structures, and from the aspects of simple structure and cost saving, the acquisition device is preferably provided with a first capture channel, a second capture channel, a counter and a register, the capture function of the first capture channel is configured to trigger a falling edge and record the count value of the counter and store the count value into the register, the capture function of the second capture channel is configured to trigger a rising edge and record the count value of the counter and store the count value into the register, and reset the counter.
[0007] Further, the acquisition device is a timer or a counter based on a programmable counting array.
[0008] In order to isolate the signal when transmitting the primary side signal, and solve the common ground problem, further comprising a digital isolator, the input end of the digital isolator is connected with the acquisition unit, and the output end is connected with the control unit.
[0009] In order to discharge the residual voltage of the load end, so that the signal distortion rate is further reduced, further comprising a bleeder circuit, the bleeder circuit is connected before the digital isolator.
[0010] In order to make the LED lamp string copy the color temperature and brightness state of the main controller, further comprising a driving circuit for controlling the color temperature and brightness state of the LED lamp string, the control unit converts the period value and duty cycle value of the two PWM signals of the main controller collected by the acquisition unit into the period value and duty cycle value of the PWM signal that can be accepted by the driving circuit.
[0011] Compared with the prior art, the single / dual color temperature copier system has the advantages that the acquisition unit includes two acquisition devices for collecting the period value and duty cycle value of the first PWM signal and the period value and duty cycle value of the second PWM signal of the main controller respectively, so that the color temperature and brightness state can be copied to the LED lamp string by processing the period value and duty cycle value of the two PWM signals of the main controller and identifying the single color temperature and dual color temperature input in the case of independent power supply, thereby achieving the function of single / dual color temperature sharing.
[0012] The system uses the software and hardware mode to realize the acquisition and copying of the signal, the design of the hardware ensures extremely low signal distortion rate, avoids the slow acquisition speed and high distortion rate caused by the hardware acquisition of the traditional product, and avoids the H bridge direct through condition; the use of software for acquisition makes the flexibility of the product stronger, the program can add the processing of abnormal conditions, so that the abnormal input of the primary side is minimized to the output of the secondary side. BRIEF DESCRIPTION OF DRAWINGS
[0013] Fig. 1 It is the architecture diagram of the single / dual color temperature copier system in the embodiment of the utility model;
[0014] Fig. 2 This is a schematic diagram of the data acquisition device in an embodiment of this utility model. Detailed Implementation
[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0016] like Figs. 1-2 As shown, this is a preferred embodiment of the present invention. A single / dual color temperature replicator system in this embodiment includes a main controller 1, a data acquisition unit 2 for acquiring the color temperature and brightness status of the main controller 1, a control unit 3 for processing the data acquired by the data acquisition unit 2, an LED string 4 for receiving the data processed by the control unit 3, a digital isolator 5, a discharge circuit 6, and a driving circuit 7.
[0017] The acquisition unit 2 includes two acquisition devices 21 that respectively acquire the period and duty cycle values of the first PWM signal and the second PWM signal of the main controller 1. Each acquisition device 21 is a timer or a counter based on a programmable counter array. If the acquisition device 21 acquires dual-color temperature signals, both channels will have PWM signals; if it acquires single-color temperature signals, only one PWM signal can be acquired.
[0018] In this embodiment, each acquisition device 21 is equipped with a first acquisition channel 211, a second acquisition channel 212, a counter 213, and a register 214. The acquisition function of the first acquisition channel 211 is configured to be triggered by a falling edge and record the count value of the counter 213 and store it in the register 214. The acquisition function of the second acquisition channel 212 is configured to be triggered by a rising edge and record the count value of the counter 213 and store it in the register 214, and trigger a reset of the counter 213. In this way, the two acquisition channels of the acquisition device 21 record the period value and the duty cycle value, respectively.
[0019] The input of digital isolator 5 is connected to acquisition unit 2, and the output is connected to control unit 3. In this way, digital isolator 5 transmits primary-side signals with very low power consumption, not only solving the common ground problem but also achieving a data transmission rate of up to 10Mbps, far exceeding the requirements for signal replication. This enables signal isolation, reducing interference to upper layers.
[0020] The bleeder circuit 6 is connected before the digital isolator 5 to bleed the residual voltage at the load end, making the waveform smoother and further reducing the signal distortion rate.
[0021] In this embodiment, the driving circuit 7 controls the color temperature and brightness of the LED string 4, and the control unit 3 converts the period value and duty cycle value of the two PWM signals of the main controller 1 collected by the acquisition unit 2 into the period value and duty cycle value of the PWM signal that the driving circuit 7 can accept.
[0022] This embodiment features simple wiring; only a power input and a PWM signal output from the main controller are required to achieve the output replication function. The system has low overall power loss. For the main controller, receiving only the output signal does not place a significant load on it, and the power input consumes very little current if no output is connected. Since the acquisition unit 2 replicates the output by acquiring the level of the main controller 1's output, it can achieve adaptive single and dual color temperatures without requiring any other modifications.
Claims
1. A single / dual color temperature replicator system, comprising a main controller (1), an acquisition unit (2) for acquiring the color temperature and brightness status of the main controller (1), a control unit (3) for processing the data acquired by the acquisition unit (2), and an LED string (4) for receiving the data processed by the control unit (3), characterized in that: The acquisition unit (2) includes two acquisition devices (21) that respectively acquire the period value and duty cycle value of the first PWM signal and the period value and duty cycle value of the second PWM signal of the main controller (1).
2. The single / dual color temperature copier system according to claim 1, characterized in that: The acquisition device (21) is provided with a first acquisition channel (211), a second acquisition channel (212), a counter (213), and a register (214). The acquisition function of the first acquisition channel (211) is configured to be triggered by a falling edge and record the count value of the counter (213) and store it in the register (214). The acquisition function of the second acquisition channel (212) is configured to be triggered by a rising edge and record the count value of the counter (213) and store it in the register (214), and trigger the reset of the counter (213).
3. The single / dual color temperature copier system according to claim 1 or 2, characterized in that: The acquisition device (21) is a timer or a counter based on a programmable counting array.
4. The single / dual color temperature copier system according to claim 1, characterized in that: It also includes a digital isolator (5), the input of which is connected to the acquisition unit (2) and the output of which is connected to the control unit (3).
5. The single / dual color temperature copier system according to claim 4, characterized in that: It also includes a bleed circuit (6) connected before the digital isolator (5).
6. The single / dual color temperature copier system according to claim 1, characterized in that: It also includes a driving circuit (7) that controls the color temperature and brightness of the LED string (4). The control unit (3) converts the period value and duty cycle value of the two PWM signals of the main controller (1) collected by the acquisition unit (2) into the period value and duty cycle value of the PWM signal that the driving circuit (7) can accept.