A stage lighting effect adjustment device and its stage light

Abstract

This invention relates to a stage lighting effect adjustment device and a stage light thereof, comprising a light effect adjustment input module, a microprocessor, a power supply module, and an LED module. The microprocessor controls the power supply module to output a current value within the set current range to the LED module according to a set current range. The light effect adjustment input module inputs an analog signal corresponding to the desired light effect to the microprocessor. The microprocessor converts the received analog signal into a digital signal, and then converts the digital signal into a PWM signal and outputs it to the power supply module. The power supply module outputs a corresponding current to the LED module according to the PWM signal. Compared with the prior art, this technical solution has high compatibility, can be applied to different rated currents of various types of LEDs, and can effectively prevent LED burnout due to excessive current output by setting different current ranges.

Description

Technical Field

[0001] This invention relates to the field of lighting technology, and more particularly to a stage lighting effect adjustment device and a stage light thereof. Background Technology

[0002] Currently, in the development of stage lighting front-ends, researchers need to provide different operating currents to the bare lamp panel through an adjustable current power module, and then observe or test the illuminance, color temperature, and other optical parameters of the lamp panel after it is lit up under different operating current conditions.

[0003] The existing technology uses a current regulation circuit with IC model VAS1253, as shown in the attached figure. Figure 1 As shown; the current output range of this current regulation circuit is based on different resistance ratios between resistors R55 and R57. Different resistance ratios result in different current output ranges. The microcontroller outputs any value within the set current range based on the duty cycle of the input PWM signal, thereby adjusting parameters such as brightness and color temperature of different lamps. However, it has the following drawbacks:

[0004] Since different LED chips have different rated currents set at the factory, the current regulation circuit needs to supply different LED chips with current within their rated range. This requires different resistance ratios between resistors R55 and R57 to achieve different maximum current output settings such as 2A, 3A, and 5A. When matching the resistance ratios, first select the maximum allowable output current value, and then apply the formula... This allows us to calculate the total resistance of resistors R55 and R57 connected in parallel. Finally, we match the resistance values ​​of resistors R55 and R57 based on the total resistance value. The difficulty in matching the total resistance value is that even if the calculated resistance value is obtained, there may not be suitable resistor specifications available for us to choose from. In addition, the resistance value of the resistor to be matched for the current in this design is very small and requires high precision, which undoubtedly increases the difficulty of designing the circuit and leads to a long development cycle.

[0005] 2. Different LED chips have different rated currents, and the circuit boards that provide current to the LED chips are also different. However, in order to reduce costs and reduce resource waste, we often change different resistors for soldering to meet the output of different current ranges. But this can easily lead to the scrapping of PCB boards, wasting time and being inefficient. Summary of the Invention

[0006] To solve one of the above-mentioned technical problems, the present invention provides a stage lighting effect adjustment device and a stage light thereof.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0008] A stage lighting effect adjustment device includes a lighting effect adjustment input module, a microprocessor, a power supply module, and an LED module;

[0009] The microprocessor controls the power supply module to output a current value within the set current range to the lamp module according to the set current range.

[0010] The light effect adjustment input module inputs the analog signal corresponding to the desired light effect to the microprocessor;

[0011] The microprocessor receives the analog signal and converts it into a digital signal. The microprocessor also converts the digital signal into a PWM signal and outputs it to the power module.

[0012] The power supply module outputs a corresponding current to the LED module according to the PWM signal.

[0013] As a preferred embodiment, the light effect adjustment input module is further defined as follows: the sliding rheostat is included, and the sliding rheostat converts the change in resistance into an analog signal output.

[0014] As a preferred embodiment, the power module and the LED module are further defined as being electrically connected through a detection module, and the detection module feeds back the detected current value to the microprocessor.

[0015] As a preferred embodiment, the microprocessor is further defined as having an electrical connection to a display module for displaying various information of the adjustment device.

[0016] As a preferred embodiment, the microprocessor is further defined as follows: the microprocessor is electrically connected to a key input module, and the microprocessor sets the current range through the key input module.

[0017] As a preferred embodiment, the microprocessor is further defined as having a plurality of PWM signal output terminals, the LED module including multiple sets of LEDs, and each PWM signal output terminal controlling the corresponding LED through a power supply module.

[0018] As a preferred embodiment, the microprocessor is further specified as being of model APM32F407VGT6.

[0019] A stage light includes an adjustment device for adjusting the light output of the stage light.

[0020] By adopting the above technical solution, the present invention has at least the following beneficial effects:

[0021] 1. Compared with existing technologies, the adjustment device of this technical solution has high compatibility. It can set different current ranges according to the rated current of different lamp beads to suit the use of different lamp bead types. At the same time, the setting based on the current range can effectively prevent the lamp beads from burning out due to excessive current output.

[0022] 2. By converting analog-to-digital signals into PWM signals to control the output current, it has advantages such as high efficiency, precise control, dynamic response, stepless brightness adjustment, high fidelity with no color shift, and low power consumption.

[0023] 3. The current output is adjusted by a push rod, which is simple and convenient to operate and helps to improve the rapid response of the lamp's light effect. Attached Figure Description

[0024] Figure 1 It is a light efficiency adjustment circuit based on existing technology;

[0025] Figure 2 This is a schematic diagram of the regulating device of the present invention;

[0026] Figure 3 This is a circuit diagram of the regulating device created in this invention. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] As attached Figure 2 and attached Figure 3 As shown, a stage lighting effect adjustment device includes a light effect adjustment input module 1, a microprocessor 2, a power supply module 3, and an LED module 4. The microprocessor 2 controls the power supply module 3 to output a current value within the set current range to the LED module 4. For example, the current range set for the microprocessor 2 can be 0-2A, 0-3A, 0-5A, etc. The light effect adjustment input module 1 inputs an analog signal corresponding to the desired light effect to the microprocessor 2. This analog signal can be a current signal or a voltage signal, etc. The microprocessor 2 converts the received analog signal into a digital signal, and then converts the digital signal into a PWM signal and outputs it to the power supply module 3. The microprocessor 2 is model APM32F407VGT6, and it integrates an analog-to-digital to PWM signal conversion function, reducing the installation of peripherals and saving costs.

[0029] In this embodiment, the power supply module 3 outputs a corresponding current to the LED module 4 according to the PWM signal. Specifically, the microprocessor outputs a PWM duty cycle to the power supply module 3 to control the current output of the power supply module 3. The LED module 4 changes its luminous efficacy according to the output current. Furthermore, the microprocessor has multiple PWM signal output terminals, and the LED module 4 is composed of multiple groups of LEDs. Each PWM signal output terminal controls the connected LED group one by one, which facilitates the independent control of multiple groups of LEDs.

[0030] In this embodiment, the light effect adjustment input module 1 includes a sliding rheostat. The sliding rheostat converts the resistance change into an analog signal output. The sliding rheostat is a push rod type, and the resistance change is adjusted by manually pushing the push rod, making operation and adjustment more convenient. The circuit of the light effect adjustment input module 1 is as follows: the A terminal of the sliding rheostat is connected to the microprocessor and one end of capacitor C105, respectively. The other end of capacitor C105 is connected to the B terminal of the sliding rheostat and then grounded. The B terminal of the sliding rheostat is connected to the P terminal of the sliding rheostat through capacitor C107. Different voltage signals (analog signals) are output by adjusting the resistance change of the sliding rheostat. Furthermore, the light effect adjustment input module 1 also includes multiple sets of sliding rheostats to allow for independent control of each group of LEDs.

[0031] In this embodiment, the power module 3 and the LED module 4 are electrically connected through a detection module 5. The detection module 5 uses a JSY1013 chip, which is used to detect the current value output by the power module and feed it back to the microprocessor 2. The output current is adjusted in real time through detection feedback to ensure the stable operation of the microprocessor 2.

[0032] In this embodiment, the microprocessor 2 is electrically connected to a display module 6 for displaying various information of the adjustment device. The display module 6 includes a display panel, and the various information includes the range value of the set current, the current and voltage values ​​output in real time by the power supply module 3, etc., all of which can be displayed visually on the display panel.

[0033] In this embodiment, the microprocessor 2 is electrically connected to a key input module 7. The microprocessor 2 sets the current range through the key input module 7. The key input module 7 includes a key SW1, a key SW2, a key SW3, and a key SW4. Keys SW1 and SW2 are used to implement up and down selection functions. Key SW2 is used to open the function menu. Key SW3 is used to confirm the selected menu item. The key input module 7 and the display module 6 cooperate to perform visual operation.

[0034] This invention creates a stage lamp using the above-mentioned adjustment device, which is used to adjust the light effect of the stage lamp, such as the brightness and color temperature of the stage lamp.

[0035] The working principle of the regulating device created in this invention is as follows:

[0036] First, we can set the current range using the operation buttons on the key input module 7. The current range can be set to 0-2A, 0-3A, 0-5A, etc. For example, we can select a current range of 0-2A. We must set the current range according to the rated current of the selected LED chip. The maximum value of the set current range must not exceed the rated voltage of the LED chip; otherwise, the LED chip may burn out due to excessive current.

[0037] Then, by manually pushing the push rod of the sliding rheostat of the light effect adjustment input module 1, we adjust the output of the analog signal according to the change in the resistance of the sliding rheostat. The microprocessor 2 receives the analog signal and processes it. The specific conversion process is analog signal - digital signal - PWM signal. The converted PWM signal is then output to the power supply module 3. Since the current range was previously set to 0-2A, the current output by the power supply module 3 will gradually change from 0A to 2A as the push rod is pushed from the bottom to the top. By setting the current range as described above, we can effectively prevent the current output by the power supply module 3 from exceeding the rated current of the LED during the push rod process, thus preventing it from burning out.

[0038] Finally, the power module 3 provides the corresponding current output to the LED module 4 according to the duty cycle of the PWM signal output, thereby completing the adjustment of lighting effects (brightness and color temperature of stage lights, etc.) and effectively improving the stability of the light output effect of the LEDs.

[0039] Compared to existing technologies, the following beneficial effects are achieved:

[0040] This technical solution's adjustment device has high compatibility. It can set different current ranges according to the rated current of different LED beads to suit the use of different LED bead types. At the same time, the setting based on the current range can effectively prevent the LED beads from burning out due to excessive current output.

[0041] By converting analog-to-digital signals into PWM signals to control the output current, it has advantages such as high efficiency, precise control, dynamic response, stepless brightness adjustment, high fidelity with no color shift, and low power consumption.

[0042] The current output is adjusted by a push rod, which is simple and convenient to operate and helps to improve the rapid response of the lamp's light effect.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various equivalent changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stage lighting effect adjustment device, characterized in that, It includes a light effect adjustment input module (1), a microprocessor (2), a power supply module (3), and an LED module (4). The microprocessor (2) controls the power supply module (3) to output a current value within the set current range to the lamp bead module (4) according to the set current range; The light effect adjustment input module (1) inputs the analog signal corresponding to the light effect to the microprocessor (2) according to the required light effect; The microprocessor (2) receives the analog signal and converts it into a digital signal. The microprocessor (2) also converts the digital signal into a PWM signal and outputs it to the power supply module (3). The power supply module (3) outputs a corresponding current to the lamp bead module (4) according to the PWM signal.

2. The adjusting device according to claim 1, characterized in that, The light effect adjustment input module (1) includes a sliding rheostat, which converts the change in resistance into an analog signal output.

3. The adjusting device according to claim 1, characterized in that, The power module (3) and the lamp bead module (4) are electrically connected through a detection module (5), and the detection module (5) feeds back the detected current value to the microprocessor (2).

4. The adjusting device according to claim 1, characterized in that, The microprocessor (2) is electrically connected to a display module (6) for displaying various information of the adjustment device.

5. The adjusting device according to claim 1, characterized in that, The microprocessor (2) is electrically connected to a key input module (7), and the microprocessor (2) sets the current range through the key input module (7).

6. The adjusting device according to claim 1, characterized in that, The microprocessor (2) has several PWM signal output terminals, and the lamp module (4) includes multiple sets of lamps. Each PWM signal output terminal controls the corresponding lamp through the power supply module (3).

7. The adjusting device according to claim 1, characterized in that, The microprocessor (2) is model APM32F407VGT6.

8. A stage light, characterized in that, It includes the adjustment device according to any one of claims 1 to 7, the adjustment device being used to adjust the light output of the stage light.

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