Brightness adjustment control device

Abstract

The utility model discloses a brightness adjustment control device, which comprises a master control voltage regulator, a plurality of groups of dimming controllers and a light-emitting piece, the master control voltage regulator comprises a relay control unit and a plurality of rectification modules connected with the relay control unit, and each dimming controller comprises a voltage signal acquisition module and an LED constant current module. One end of the voltage signal acquisition module is connected with the rectification module, the other end of the voltage signal acquisition module is connected with the LED constant current module, the relay control unit receives an input voltage and sends the input voltage to the dimming controller, and the voltage signal acquisition module reads an output voltage of the main control voltage regulator to determine a rectification signal output by the rectification module; the output current of the LED constant-current module is controlled according to the rectification signal so as to adjust the brightness of the light-emitting part, multi-gear brightness adjustment can be achieved without adding a signal line, meanwhile, the advantages of signal stability and wiring simplicity are considered, the dimming controller judges the waveform of the main power supply to select the brightness, a dimming control circuit is not needed, and simple dimming can be achieved by using the waveform of a rectification loop.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting control equipment, and more specifically, particularly to a brightness adjustment control equipment. Background Art

[0002] Existing brightness adjustment equipment uses two methods: wireless communication and wired communication. Wireless communication methods include power carrier, 4G, Lora, ZigBee, etc., and their stability is affected by multiple factors such as the stability of the wireless signal; while wired communication is divided into PWM and 0-10V dimming signals. Compared with wireless communication, it requires an extra route and is affected by the transmission distance. Utility Model Content

[0003] In order to take into account the advantages of stable signal and simple wiring, the present invention has the advantages of stable signal of wireless communication, can save a line, simple wiring, reduce equipment cost, and can make the equipment compact. Therefore, the purpose of the present invention is to provide a brightness adjustment control device with stable signal and convenient wiring.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] The utility model provides a brightness adjustment control device, comprising a main control voltage regulator, multiple groups of dimming controllers and a light-emitting element, wherein one end of the dimming controller is electrically connected to the main control voltage regulator, and the other end of the dimming controller is connected to the light-emitting element;

[0006] The master voltage regulator includes a relay control unit and a plurality of rectifier modules connected to the relay control unit. Each group of dimming controllers includes a voltage signal acquisition module and an LED constant current module. One end of the voltage signal acquisition module is connected to the rectifier module, and the other end of the voltage signal acquisition module is connected to the LED constant current module.

[0007] The main control voltage regulator receives input voltage through the relay control unit and sends it to the dimming controller. The dimming controller reads the output voltage of the main control voltage regulator through the voltage signal acquisition module to determine the rectified signal output by the rectifier module. The voltage signal acquisition module controls the output current of the LED constant current module according to the rectified signal to adjust the brightness of the light-emitting device.

[0008] Preferably, each of the rectifier modules includes at least one diode.

[0009] Preferably, the rectified signal of the rectifier module includes at least three voltage signal waveforms.

[0010] Preferably, the three voltage signal waveforms are respectively an unrectified power supply signal, a half-wave rectified power supply signal and a full-wave rectified power supply signal.

[0011] Preferably, the light-emitting element comprises at least one group of light-emitting diodes, and each group of the light-emitting diodes is correspondingly connected to each group of LED constant current modules in the dimming controller.

[0012] Preferably, the relay control unit changes the voltage output state of the input voltage manually or in a timing manner.

[0013] Preferably, the relay control unit may adopt at least one of a 74HC595 chip, a ULN2003 chip or a TLP521 chip.

[0014] Compared with the prior art, the advantages of the utility model are:

[0015] The utility model sets a main control voltage regulator, a dimming controller and a light-emitting component. The main control voltage regulator receives an input voltage through a relay control unit and sends it to the dimming controller. The dimming controller reads the output voltage of the main control voltage regulator through a voltage signal acquisition module to determine the rectified signal output by the rectifier module. The voltage signal acquisition module controls the output current of the LED constant current module according to the rectified signal to adjust the brightness of the light-emitting component. Multi-level brightness adjustment can be achieved without adding signal lines, while taking into account the advantages of signal stability and simple wiring. The dimming controller selects the brightness by judging the waveform of the main power supply, does not require a dimming control circuit, and uses the waveform of the rectifier circuit to achieve simple dimming, which also reduces the manufacturing cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a structural diagram of a brightness adjustment control device of the utility model;

[0018] Figure 2 This is a working principle diagram of a brightness adjustment control device of the utility model;

[0019] Figure 3 This is a signal state diagram of the non-rectified power supply of the utility model;

[0020] Figure 4 This is the signal state diagram of the half-wave rectifier power supply of the utility model;

[0021] Figure 5 It is the power signal after full-wave rectification of the utility model;

[0022] Figure 6 It is a circuit diagram of the dimming controller of the utility model.

[0023] The main component symbols are as follows:

[0024] 1-main control voltage regulator; 11-relay control unit; 12-rectifier module; 2-dimming controller; 21-voltage signal acquisition module, 22-LED constant current module; 3-light-emitting component. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] See also Figure 1 and Figure 2 The utility model provides a brightness adjustment control device, including a main control voltage regulator 1, a plurality of dimming controllers 2 and a light emitting element 3, wherein one end of the dimming controller 2 is electrically connected to the main control voltage regulator 1, and the other end of the dimming controller 2 is connected to the light emitting element 3;

[0028] The master voltage regulator 1 includes a relay control unit 11, and a plurality of rectifier modules 12 connected to the relay control unit 11. Each group of dimming controllers 2 includes a voltage signal acquisition module 21 and an LED constant current module 22. One end of the voltage signal acquisition module 21 is connected to the rectifier module 12, and the other end of the voltage signal acquisition module 21 is connected to the LED constant current module 22.

[0029] The main control voltage regulator 1 receives the input voltage through the relay control unit 11 and sends it to the dimming controller 2. The dimming controller 2 reads the output voltage of the main control voltage regulator 1 through the voltage signal acquisition module 21 to determine the rectified signal output by the rectifier module 12. The voltage signal acquisition module 21 controls the output current of the LED constant current module 22 according to the rectified signal to adjust the brightness of the light-emitting element 3.

[0030] In this embodiment, each of the rectifier modules 12 includes at least one diode, the light-emitting element 3 includes at least one group of light-emitting diodes, each group of the light-emitting diodes is correspondingly connected to each group of LED constant current modules 22 in the dimming controller 2, and the relay control unit 11 changes the voltage output state of the input voltage manually or timed, and the relay control unit can use at least one of the 74HC595 chip, ULN2003 chip or TLP521 chip.

[0031] It should be noted that the power signal or input voltage received by the relay control unit 11 is AC 220V, and the voltage output state is changed manually or by timing. The output end of the relay control unit 11 can be connected to multiple rectifier modules 12 to form multiple branch outputs. Each rectifier module 12 is composed of a single or multiple or no diode connection, so that the voltage signal flowing through the rectifier module 12 will appear different, such as Figure 3 , Figure 4 and Figure 4 The three voltage signal waveforms shown are: Figures 3 to 5 The three signal waveforms are only for illustration, and the types and quantities of the corresponding output waveforms may be different depending on the number and structure of the rectifier modules 12. The dimming controller 2 reads the output voltage of the main control voltage regulator 1 through the voltage signal acquisition module 21, determines which rectifier module 12 the power signal corresponding to the output voltage passes through, and changes the output current of the LED constant current module 22, thereby adjusting the brightness of the light-emitting diode.

[0032] See again Figure 3 , Figure 4 and Figure 5 The rectifier signal of the rectifier module 12 includes at least three voltage signal waveforms, which are respectively an unrectified power supply signal, a half-wave rectified power supply signal and a full-wave rectified power supply signal. The dimming controller 2 selects the brightness by judging the main power supply waveform. It does not require a dimming control circuit and uses the waveform of the rectifier circuit to achieve simple dimming, which has the characteristics of low cost. Figure 6 , using optocouplers and logic gates to form U1, it is possible to determine at low cost whether the incoming waveform is a half-wave, full-wave, or unrectified wave.

[0033] Specifically, the relay control unit 11 can use at least one of the 74HC595 chip, the ULN2003 chip or the TLP521 chip. The 74HC595 chip has the functions of shifting, storing and serial output, and can trigger external devices such as the control end of the relay through parallel output; compared with the 74HC595 chip, the ULN2003 chip can not only control multiple relays, but also directly drive the relay, making the design of its controller simpler; the TLP521 chip uses a photocoupler for isolation, so that the mutual interference between the collected signal and the control signal is minimized, and a triode (transistor) driver is built in, which can directly drive the relay. The rectifier module 12 is provided with multiple, and the rectifier module 12 is composed of a single or multiple diodes connected. The diode can be an ultra-fast recovery diode chip. These chips play a key role in the rectification process, can quickly recover and process current, and have the characteristics of short reverse recovery time (trr), small reverse recovery peak current (IRM) and low reverse recovery charge (Qrr) compared with ordinary rectifier diodes. LED constant current module is a linear constant current chip, such as SDH771XN. SDH771XN is a high-precision LED constant current drive control chip suitable for non-isolated step-down LED constant current power supply system with full range AC input voltage of 88VAC-265VAC.

[0034] It should be understood that by setting up a main control voltage regulator 1, a dimming controller 2 and a light-emitting component 3, the main control voltage regulator 1 receives an input voltage through a relay control unit 11 and sends it to the dimming controller 2, and the dimming controller 2 reads the output voltage of the main control voltage regulator 1 through a voltage signal acquisition module 21 to determine the rectified signal output by the rectifier module 12, and the voltage signal acquisition module 21 controls the output current of the LED constant current module 22 according to the rectified signal to adjust the brightness of the light-emitting component 3. There is no need to add a signal line, and multi-level brightness adjustment can be achieved, while taking into account the advantages of signal stability and simple wiring; the dimming controller 2 selects the brightness by judging the waveform of the main power supply, and does not require a dimming control circuit; and using the waveform of the rectifier circuit, simple dimming can be achieved, which has the characteristics of low cost.

[0035] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, the patent owner may make various variations or modifications within the scope of the appended claims. As long as they do not exceed the protection scope described in the claims of the present invention, they should be within the protection scope of the present invention.

Claims

1. A brightness adjustment control device, characterized in that: It includes a main control voltage regulator, multiple dimming controllers and a light-emitting element, wherein one end of the dimming controller is electrically connected to the main control voltage regulator, and the other end of the dimming controller is connected to the light-emitting element; The master voltage regulator includes a relay control unit and a plurality of rectifier modules connected to the relay control unit. Each group of dimming controllers includes a voltage signal acquisition module and an LED constant current module. One end of the voltage signal acquisition module is connected to the rectifier module, and the other end of the voltage signal acquisition module is connected to the LED constant current module. The main control voltage regulator receives input voltage through the relay control unit and sends it to the dimming controller. The dimming controller reads the output voltage of the main control voltage regulator through the voltage signal acquisition module to determine the rectified signal output by the rectifier module. The voltage signal acquisition module controls the output current of the LED constant current module according to the rectified signal to adjust the brightness of the light-emitting device.

2. A brightness adjustment control device according to claim 1, characterized in that: Each of the rectifier modules includes at least one diode.

3. A brightness adjustment control device according to claim 2, characterized in that: The rectified signal of the rectifier module includes at least three voltage signal waveforms.

4. A brightness adjustment control device according to claim 3, characterized in that: The three voltage signal waveforms are respectively an unrectified power supply signal, a half-wave rectified power supply signal and a full-wave rectified power supply signal.

5. A brightness adjustment control device according to claim 1, characterized in that: The light-emitting element comprises at least one group of light-emitting diodes, and each group of the light-emitting diodes is correspondingly connected to each group of LED constant current modules in the dimming controller.

6. A brightness adjustment control device according to claim 1, characterized in that: The relay control unit changes the voltage output state of the input voltage manually or in a timing manner.

7. A brightness adjustment control device according to claim 1, characterized in that: The relay control unit may use at least one of a 74HC595 chip, a ULN2003 chip or a TLP521 chip.

Images