Lamp system with signal shaping module

Abstract

The utility model provides a lamp system with a signal shaping module, aiming at the problem that DMX signals are wrong due to the fact that the number of lamps is large or the signal transmission distance between the lamps is long, the optical coupler isolation module and the signal processing module are arranged, the received DMX signals can be reshaped, and the signal shaping module is used for shaping the DMX signals again. According to the method, the width of the DMX signal is corrected while the interference signal in the DMX signal is effectively removed, the change error of the data rate is avoided, error correction and shaping of the transmitted signal are further realized, the transmission distance of the DMX signal can be effectively prolonged, and the accuracy and stability of signal transmission are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lamp signal transmission, in particular to a lamp system with a signal shaping module. Background Art

[0002] In traditional decorative lighting projects, as the number of lamps increases or the signal lines between lamps become longer, DMX signals will be affected by input resistance and capacitance and deformed, causing delays in the rise and fall of data signals, that is, the time required for the signal to change from low level to high level or from high level to low level is longer than ideal. For digital signals, this delay may cause the width of each bit in the data to become narrower or wider, thereby changing the communication rate of the signal, causing signal errors, and reducing the accuracy and stability of data transmission. At the same time, data on the signal line will also be interfered due to long-distance transmission, and the interference signal will be integrated with the DMX signal for transmission, thereby affecting the accuracy of data transmission.

[0003] Therefore, in order to avoid the problem of signal errors caused by connecting a large number of lamps and a long signal transmission distance between lamps, it is necessary to provide a lamp system with a signal shaping module. Utility Model Content

[0004] In view of the problem of signal errors caused by connecting multiple lamps and the long signal transmission distance between lamps in the prior art, the utility model provides a lamp system with a signal shaping module, which performs error correction and shaping on the transmitted signal to improve the accuracy and stability of signal transmission.

[0005] A lamp system with a signal shaping module comprises an LED lamp system and a signal shaping module; the LED lamp system comprises a power supply, an LED controller and a predetermined number of lamps connected in series to the LED controller via a signal line, the power supply supplies power to the lamps, and the lamps are connected in series to each other via a power line; the LED controller outputs a DMX signal for controlling the lamp to each lamp via the signal line; the signal shaping module comprises an optocoupler isolation module and a signal processing module; the optocoupler isolation module and the signal processing module are sequentially arranged in series on the signal line between any two serially connected lamps; the optocoupler isolation module is used to filter interference signals in the DMX signal input to the lamp via the signal line; the signal processing module is used to automatically detect the DMX signal processed by the optocoupler isolation module, select a suitable baud rate to receive the DMX signal, and then output the received DMX signal to the next lamp at a preset baud rate; wherein the preset baud rate is the same as the baud rate output by the LED controller.

[0006] Furthermore, the optical coupling isolation module is specifically an optical coupling isolator.

[0007] Furthermore, the signal processing module is specifically an MCU controller.

[0008] Furthermore, the lamp includes a signal processor and a plurality of LED lamp beads, and the signal processor is used to receive and decode DMX signals, and then generate PWM drive signals to drive the LED lamp beads to work.

[0009] The beneficial effects of the utility model are as follows: the utility model provides a lighting system with a signal shaping module. In order to solve the problem of signal errors caused by a large number of lamps or a long signal transmission distance between lamps, an optocoupler isolation module and a signal processing module are set up to reshape the received DMX signal. While effectively removing the interference signal in the DMX signal, the width of the DMX signal is also corrected to avoid errors in data rate changes, thereby realizing error correction and shaping of the transmitted signal, which can effectively extend the transmission distance of the DMX signal and improve the accuracy and stability of signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram of the principle of a lighting system with a signal shaping module provided by the present utility model;

[0011] Figure 2 A structural schematic diagram of a lamp system provided by the utility model;

[0012] Figure 3 This is a schematic diagram of a DMX signal shaping waveform provided by the utility model.

[0013] Figure ID

[0014] 1. Power supply; 2. LED controller; 3. Signal line; 4. Lamp; 5. Power line; 6. Signal shaping module; 61. Optocoupler isolation module; 62. Signal processing module. DETAILED DESCRIPTION

[0015] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0016] refer to Figure 1 as well as Figure 2 As shown, a lighting system with a signal shaping module includes an LED lighting system and a signal shaping module 6 .

[0017] Specifically, the LED lamp system includes a power supply 1, an LED controller 2, and a predetermined number of lamps 4 connected in series to the LED controller 2 via a signal line 3. The power supply 1 supplies power to the lamps 4, and the lamps 4 are connected in series to each other via a power line 5.

[0018] The LED controller 2 outputs the DMX signal for controlling the lamp 4 to each of the lamps 4 at a fixed baud rate through the signal line 3.

[0019] The signal shaping module 6 includes an optical coupling isolation module 61 and a signal processing module 62. The optical coupling isolation module 61 and the signal processing module 62 are sequentially arranged in series on the signal line between any two series-connected lamps 4.

[0020] refer to Figure 2 , Figure 3 As shown, the DMX signal waveform of the first lamp 4 connected to the LED controller 2 is as follows: Figure 3 As shown in the waveform A, after being transmitted between multiple lamps or over long lines, the DMX signal waveform will integrate interference signals and deformation, and the DMX signal waveform will change to Figure 3 As shown in the waveform B.

[0021] The optical coupler isolation module 61 is used to filter interference signals in the DMX signal of the signal line 3 input to the lamp 4. In this embodiment, the optical coupler isolation module 61 is specifically an optical coupler isolator. The optical coupler isolator can isolate its input and output ends by optical isolation, effectively preventing the propagation of interference signals and electrical noise, and ensuring that the output end receives a clear and stable signal. By setting the optical coupler isolation module 61, the DMX signal filters the interference signal. Figure 3 The B waveform changes in Figure 3 The C waveform in .

[0022] The signal processing module 62 is used to automatically detect the DMX signal processed by the optical coupling isolation module 61, and select a suitable baud rate to receive the DMX signal according to the processed DMX signal, and then output the received DMX signal to the next lamp 4 at a preset baud rate. The preset baud rate is the same as the baud rate output by the LED controller 2. For example, if the baud rate output by the LED controller 2 is 500K, the baud rate of the DMX signal output by the signal processing module 62 is automatically set to 500K output.

[0023] After the DMX signal processed by the optocoupler isolation module 61 filters out the interference signal, the signal waveform is corrected, but the signal width becomes uncontrollably narrowed or widened, so it is necessary to adjust the width of the processed DMX signal. The DMX signal processed by the optocoupler isolation module 61 is detected by the signal processing module 62, and then received at a baud rate that matches the DMX signal, and then output at a preset baud rate, so that the data baud rate of the DMX signal processed by the optocoupler isolation module 61 is restored to be consistent with the output of the LED controller 2, thereby realizing the reshaping of the data whose signal width has been deformed to a certain extent. In this embodiment, the optocoupler isolation module 61 is specifically an optocoupler isolator, and the signal processing module 62 is specifically an MCU controller.

[0024] Through the setting of the signal processing module 62, the DMX signal processed by the optical coupling isolation module 61 is shaped. Figure 3 The C waveform changes in Figure 3 The A1 waveform in is the same as the A waveform.

[0025] The lamp 4 includes a signal processor and a plurality of LED lamp beads. The signal processor is used to receive and decode the shaped DMX signal, and then generate a corresponding PWM driving signal to drive the LED lamp beads to work.

[0026] In order to solve the problem of signal error of DMX signal caused by a large number of lamps 4 or a long signal transmission distance between lamps, the utility model sets an optical coupling isolation module 61 and a signal processing module 62, which can reshape the received DMX signal, effectively remove the interference signal in the DMX signal, correct the width of the DMX signal, avoid the error of data rate change, and then realize error correction and shaping of the transmitted signal, which can effectively extend the transmission distance of the DMX signal, avoid the problem of signal transmission error caused by too many lamps 4 connected, and improve the accuracy and stability of signal transmission.

[0027] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lighting system with a signal shaping module, characterized in that: It includes an LED light system and a signal shaping module; The LED lamp system comprises a power supply, an LED controller and a predetermined number of lamps connected in series to the LED controller via a signal line, the power supply supplies power to the lamps, and the lamps are connected in series to each other via a power line; the LED controller outputs a DMX signal for controlling the lamps to each lamp via the signal line; The signal shaping module includes an optocoupler isolation module and a signal processing module; the optocoupler isolation module and the signal processing module are sequentially arranged in series on the signal line between any two series-connected lamps; the optocoupler isolation module is used to filter the interference signal in the DMX signal of the lamp input by the signal line; the signal processing module is used to automatically detect and receive the DMX signal processed by the optocoupler isolation module, and output it to the next lamp at a preset baud rate; wherein the preset baud rate is the same as the baud rate output by the LED controller.

2. A lighting system with a signal shaping module according to claim 1, characterized in that: The optical coupling isolation module is specifically an optical coupling isolator.

3. The lighting system with a signal shaping module according to claim 1, characterized in that: The signal processing module is specifically a MCU controller.

4. The lighting system with a signal shaping module according to claim 1, characterized in that: The lamp includes a signal processor and a plurality of LED lamp beads. The signal processor is used to receive and decode DMX signals, and then generate PWM driving signals to drive the LED lamp beads to work.

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