Intelligent color modulation control system

Abstract

The utility model relates to the technical field of electronics, in particular to an intelligent color modulation control system, which comprises an input end and voltage stabilization module, a color modulation control module and a color modulation control module, the MCU control module is connected with the input end and voltage stabilization module and outputs two groups of PWM signals, namely WPWM signals and CPWM signals, according to the received signals; the LED color temperature color mixing control module is used for adjusting color temperature according to the WPWM signal and the CPWM signal which are complementary and input by the MCU control module; the current signal sampling and amplifying module is connected with the input end and voltage stabilizing module and the MCU control module, and samples and amplifies the current signal according to the output signal of the LED color temperature color mixing control module; and the post-power-failure rapid discharge control module is connected with the input end and voltage stabilization module and is used for rapidly discharging during power failure. The circuit has the characteristics of intelligent color matching, reasonable circuit design and the like.

Description

Technical Field

[0001] The utility model relates to the field of electronic technology, in particular to an intelligent color adjustment control system. Background Art

[0002] With the rapid development of science and technology, people's demand for the functions of electronic products is also increasing. For example, the demand for lamps was originally for lighting, but now there is also a demand for color temperature.

[0003] In order to overcome the above problems, different LED circuits are designed, and the corresponding circuits are controlled by switches to realize the function of controlling the corresponding color temperature requirements. This color adjustment method is relatively simple and rigid, and cannot meet the needs of users well.

[0004] Therefore, it is urgent to provide an intelligent color adjustment control system to overcome the above-mentioned defects. Utility Model Content

[0005] The main purpose of the utility model is to provide an intelligent color adjustment control system, which has the characteristics of intelligent color adjustment, reasonable circuit design and the like.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An intelligent color adjustment control system, comprising:

[0008] Input terminal and voltage regulator module, used to provide stable voltage of 5V and 12V;

[0009] The MCU control module is connected to the input terminal and the voltage stabilizing module, and outputs two groups of PWM signals: a WPWM signal and a CPWM signal according to the received signal;

[0010] An LED color temperature mixing control module adjusts the color temperature according to the complementary WPWM signal and CPWM signal input by the MCU control module;

[0011] A current signal sampling and amplifying module is connected to the input terminal, the voltage stabilizing module and the MCU control module, and samples and amplifies the current signal according to the output signal of the LED color temperature and color mixing control module;

[0012] The quick discharge control module after power failure is connected with the input end and the voltage stabilizing module and discharges quickly when power is failed.

[0013] Preferably, the LED color temperature mixing control module includes:

[0014] A first LED switch unit, comprising a first switch connected to the low color temperature LED and turned on according to the WPWM signal;

[0015] A second LED switch unit includes a second switch connected to the high color temperature LED and turned on according to the CPWM signal; and

[0016] A sampling conduction switch is a third switch connected to the first LED switch unit and the second LED switch unit and is turned on according to the high level detected by the MCU control module.

[0017] Preferably, the low color temperature LED is 2700K, and the high color temperature LED is 5000K.

[0018] Preferably, the first switch, the second switch and the third switch are all field effect transistors.

[0019] Preferably, the MCU control module includes: a control chip U3, a resistor R14 connected to the input end and the 5V voltage of the voltage regulator module and the NRST / PAO pin of the control chip U3, one end of which is connected to the NRST / PAO pin of the control chip U3 and to the resistor R14, and the other end of which is connected to the VSS pin of the control chip U3 and to the PA8 / AD5 pin of the control chip U3 via the capacitor C8, and the capacitor C8 and the capacitor C9 are both grounded.

[0020] Preferably, the control chip U3 is ME32S003AF6P7.

[0021] Preferably, the input terminal and the voltage stabilizing module include:

[0022] The first-stage voltage stabilization module stabilizes the access voltage to 12V and outputs it to the current signal sampling and amplification module and the post-power-off rapid discharge control module;

[0023] The second-stage voltage stabilizing module is connected to the first-stage voltage stabilizing module, stabilizes the input voltage to 5V and outputs it to the MCU control module.

[0024] Preferably, the post-power-off rapid discharge control module comprises: a fourth switch connected to the input end and the 12V output voltage of the voltage stabilizing module and turned on when power is off, and a load unit connected to the fourth switch and the input end and the power input end of the voltage stabilizing module.

[0025] Preferably, the fourth switch is a nmosfet, a gate of the nmosfet is connected to a 12V voltage, a source is grounded, and a drain is connected to the load unit.

[0026] Preferably, the load unit includes a resistor R6, a resistor R7 and a resistor R8 connected in parallel.

[0027] The utility model is an intelligent color adjustment control system, the input end and the voltage stabilizing module respectively provide 12V voltage to the current signal sampling and amplifying module and the fast discharge control module after power failure, and provide 5V voltage to the MCU control module, the MCU control module enters the configuration mode, and acts on the LED color temperature mixing control module through the WPWM signal and the CPWM signal, the LED color temperature mixing control module adjusts the color temperature according to the received WPWM signal and the CPWM signal, and then the current signal sampling and amplifying module amplifies and outputs the mixed signal of the LED color temperature mixing control module, the MCU control module monitors the output state of the current signal sampling and amplifying module in real time, and controls the output WPWM signal and CPWM signal according to its output state, when the power is off, the fast discharge control module after power failure performs a fast discharge operation, which improves the safety of the use of the system. The utility model has the characteristics of intelligent color adjustment and reasonable circuit design. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention is a block diagram of a module of an intelligent color adjustment control system according to an embodiment of the present invention.

[0029] Figure 2 1 is a circuit schematic diagram of the input end and the voltage stabilizing module of the embodiment.

[0030] Figure 3 Schematic diagram of the circuit of the MCU control module of this embodiment.

[0031] Figure 4 Schematic diagram of the circuit of the LED color temperature mixing control module and the current sampling and amplification module of this embodiment.

[0032] Figure 5 4 is a circuit schematic diagram of the power-off rapid discharge control module of this embodiment.

[0033] Description of the figure numbers in the manual:

[0034] 1-input end and voltage stabilizing module, 2-MCU control module, 3-LED color temperature mixing control module, 4-current signal sampling and amplification module, 5-fast discharge control module after power failure. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0036] It should be noted that when an element is referred to as being “connected to” or “disposed on” another element, it can be directly on the other element or indirectly on the other element.

[0037] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are 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, rather than indicating or implying 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.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] See also Figures 1 to 5 The intelligent color adjustment control system of this embodiment includes: an input end and a voltage stabilizing module 1, an MCU control module 2, an LED color temperature mixing control module 3, a current signal sampling and amplifying module 4 and a power-off fast discharge control module 5, wherein the input and voltage stabilizing module 1 stably outputs 5V and 12V voltages of the connected power supply respectively, the MCU control module 2 is connected to the input end and the voltage stabilizing module 1, and outputs two groups of PWM signals according to the received signal: a WPWM signal and a CPWM signal, the LED color temperature mixing control module 3 adjusts the color temperature according to the complementary WPWM signal and CPWM signal input by the MCU control module 2, the current signal sampling and amplifying module 4 is connected to the input end and the voltage stabilizing module 1 and the MCU control module 2, and samples and amplifies the current signal according to the output signal of the LED color temperature mixing control module 3, and the power-off fast discharge control module 5 is connected to the input end and the voltage stabilizing module 1, and discharges quickly when the power is off.

[0041] In a preferred embodiment, the input terminal and the voltage stabilizing module 1 include: a first-stage voltage stabilizing module that stabilizes the input voltage to 12V and outputs it to the current signal sampling and amplifying module 4 and the post-power-off rapid discharge control module 5, and a second-stage voltage stabilizing module connected to the first-stage voltage stabilizing module that stabilizes the input voltage to 5V and outputs it to the MCU control module 2. Figure 2 The first-stage voltage stabilizing module includes: a transistor Q1, a Schottky diode ZD1 with a negative electrode connected to the base of the transistor Q1 and a positive electrode grounded, a capacitor C5 with one end connected to the emitter of the transistor Q1 and the other end grounded, and a resistor R1 with one end connected to the collector of the transistor Q1 and the other end connected to the negative electrode of the Schottky diode ZD1. The collector of the transistor Q1 is connected to the power supply through a resistor R3 and a diode D1 connected in series. The second-stage voltage stabilizing module includes: a voltage stabilizing chip U1 with an input end connected to a capacitor C6 and the emitter of the transistor Q1, a capacitor C2 connected to the output end of the voltage stabilizing chip U1, and capacitor C6 is connected in parallel with capacitor C5.

[0042] The MCU control module 2 includes: a control chip U3, a resistor R14 connected to the input end and the 5V voltage of the voltage regulator module and the NRST / PAO pin of the control chip U3, one end connected to the NRST / PAO pin of the control chip U3 and the resistor R14, and the other end connected to the VSS pin of the control chip U3 and the capacitor C9 connected to the PA8 / AD5 pin of the control chip U3 via the capacitor C8, the capacitor C8 and the capacitor C9 are both grounded, and the control chip U3 is ME32S003AF6P7. Customized firmware is written through the firmware burning port of the control chip U3, specifically, RX and TX are the debugging ends of the control chip U3, SWI and TEXT are the firmware burning ports, the AD port is to collect the current signal and filter it through the capacitor C8 to the internal firmware to run the operation and output the CPWM signal and the WPWM signal respectively through the ports CPWM and WPWM, and the AD port is to determine whether the port S1 outputs a high-frequency or low-frequency signal based on the voltage of the collected current signal.

[0043] The LED color temperature mixing control module 3 includes: a first LED switch unit, a second LED switch unit and a sampling conduction switch, wherein the first LED switch unit includes a first switch connected to a low color temperature LED and turned on according to the WPWM signal; the second LED switch unit includes a second switch connected to a high color temperature LED and turned on according to the CPWM signal; the sampling conduction switch is connected to the first LED switch unit and the second LED switch unit, and is a third switch turned on according to the high level detected by the MCU control module 2. Specifically, the first switch, the second switch and the third switch are all field effect tubes. More specifically, the first switch Q3 is a nmosfet, the gate is connected to the WPWM signal of the control chip U3 through a resistor R17, and the drain is connected to the low color temperature LED, the drain of the second switch Q2 is connected to the high temperature LED, the gate is connected to the CPWM signal of the control chip U3 through a resistor R16, the gate of the third switch Q4 is connected to the S1 port of the control chip U3 through a resistor R28, and the first switch, the second switch and the third switch are all connected to the current signal sampling and amplification module 4. Further, when the MCU control module 2 is configured, if the LED load connected to the second switch Q2 has a high color temperature C-connection of 5000K, the low color temperature LED load connected to the first switch Q3 is 2700K, and the adjustable LED driver output current is 1A, the CPWM port of the control chip U3 outputs a 100% duty cycle PWM signal to the second switch Q2 when the dimming is maximum. At this time, the second switch Q2 is fully turned on, and the high color temperature LED light is fully lit. When the dimming is 100%, the CPWM port of the control chip U3 outputs a 100% duty cycle PWM signal to the second switch Q2, the second switch Q2 is turned on 100%, and the high color temperature LED light is 100%. At the same time, the WPWM port of the control chip U3 outputs a 0% duty cycle PWM signal to the first switch Q3, the first switch Q3 is turned off, the low color temperature LED light is not lit, and the LED light is 5000K color temperature. When dimming to 75%, the CPWM port of the control chip U3 outputs a PWM signal with a duty cycle of 75% to the second switch Q2, the second switch Q2 is turned on by 75%, and the high color temperature LED light is 75%. At the same time, the WPWM port of the control chip U3 outputs a PWM signal with a duty cycle of 25% to the first switch Q3, the first switch Q3 is turned on by 25%, and the low color temperature LED light is 25%. At this time, the color temperature of the LED light is about 4500K. When dimming to 50%, the CPWM port of the control chip U3 outputs a PWM signal with a duty cycle of 30% to the second switch Q2, the second switch Q2 is turned on by 50%, and the high color temperature LED light is 50%. At the same time, the WPWM port of the control chip U3 outputs a PWM signal with a duty cycle of 50% to the first switch Q3 of the circuit, the first switch Q3 is turned on by 50%, and the low color temperature LED light is 50%. At this time, the color temperature of the LED light is about 3500K.When dimming to 25%, the CPWM port of the control chip U3 outputs a 25% duty cycle PWM signal to the second switch Q2, the second switch Q2 is turned on 25%, and the high color temperature LED light is 25%. At the same time, the WPWM port of the control chip U3 outputs a 25% duty cycle PWM signal to the first switch Q3, the first switch Q3 is turned on 75%, and the low color temperature LED light is 75%. At this time, the LED light is about 3000K color temperature. When dimming to 10%, the CPWM port of the control chip U3 outputs a 10% duty cycle PWM signal to the second switch Q2, the second switch Q2 is turned on 10%, and the high color temperature LED light is 10%. At the same time, the WPWM port of the control chip U3 outputs a 90% duty cycle PWM signal to the first switch Q3 of the circuit, the first switch Q3 is turned on 90%, and the low color temperature LED light is 90%. At this time, the LED light is about 2700K color temperature. The designed MCU control module 2 enables the system to have the function of intelligent color adjustment.

[0044] The post-power-off fast discharge control module 5 includes: a fourth switch connected to the input end and the 12V output voltage of the voltage stabilizing module 1 and turned on when the power is off, and a load unit connected to the fourth switch and the input end and the power input end of the voltage stabilizing module 1, the fourth switch is a nmosfet, the gate of the nmosfet is connected to the 12V voltage, the source is grounded, and the drain is connected to the load unit, and the load unit includes a resistor R6, a resistor R7, and a resistor R8 connected in parallel. The post-power-off fast discharge control module 5 is designed so that the system has the function of fast discharge after power failure, which overcomes the damage phenomenon of electronic devices.

[0045] The working principle of the utility model is as follows: the LED load is connected and powered on, and the control chip U3 of the MCU control module 2 enters the initialization and configuration mode, and the ports WPWM and CPWM of the control chip U3 output two sets of complementary PWM signals to control the second switch Q2 and the first switch Q3 to be alternately turned on, and the two sets of dual-color temperature LED loads connected to the first switch and the second switch are alternately slowly turned on and off for three cycles to indicate that they are in the configuration state. After the dual-color temperature is alternately turned on for three weeks, the CPWM port of the control chip U3 outputs a 100% duty cycle PWM signal, the second switch Q2 is fully turned on, and the high color temperature LED lamp is fully lit; the WPWM port of the control chip U3 outputs a 0% duty cycle PWM signal, the first switch Q3 is turned off, and the low color temperature LED lamp is not lit. At the same time, the S1 port of the control chip U3 outputs a high frequency, the third switch Q4 is turned on, R20, R21, and R22 are connected, and the AD port of the control chip U3 collects the AD voltage signal output by the current signal sampling and amplification module 4. When the AD port of the control chip U3 detects less than 1.5V, the S1 port of the control chip U3 outputs a low frequency, and at this time, the third switch Q4 is turned off. On the contrary, when it is greater than 1.5V, the S1 port output of the control chip U3 remains at a high frequency. The control chip U3 detects whether it is a large current or a small current state and then configures the working state. The configuration state reading time is 5S. After more than 5S, the current configuration is locked. If the power is turned off for less than 5S, the configuration is unsuccessful and the next power-on is still in the configuration state. To repeatedly enter the configuration state, you only need to turn on and off the power 3 times to enter.

[0046] It can be seen from the above description that the intelligent color adjustment control system of the utility model has the characteristics of intelligent color adjustment and reasonable circuit design.

[0047] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An intelligent color adjustment control system, characterized in that: include: Input terminal and voltage regulator module, used to provide stable voltage of 5V and 12V; The MCU control module is connected to the input terminal and the voltage stabilizing module, and outputs two groups of PWM signals: a WPWM signal and a CPWM signal according to the received signal; An LED color temperature mixing control module adjusts the color temperature according to the complementary WPWM signal and CPWM signal input by the MCU control module; A current signal sampling and amplifying module is connected to the input terminal, the voltage stabilizing module and the MCU control module, and samples and amplifies the current signal according to the output signal of the LED color temperature and color mixing control module; The quick discharge control module after power failure is connected with the input end and the voltage stabilizing module and discharges quickly when power is failed.

2. The intelligent color adjustment control system according to claim 1, characterized in that: The LED color temperature mixing control module includes: A first LED switch unit, comprising a first switch connected to the low color temperature LED and turned on according to the WPWM signal; A second LED switch unit includes a second switch connected to the high color temperature LED and turned on according to the CPWM signal; and A sampling conduction switch is a third switch connected to the first LED switch unit and the second LED switch unit and is turned on according to the high level detected by the MCU control module.

3. The intelligent color adjustment control system according to claim 2, characterized in that: The low color temperature LED is 2700K, and the high color temperature LED is 5000K.

4. The intelligent color adjustment control system according to claim 2 or 3, characterized in that: The first switch, the second switch and the third switch are all field effect transistors.

5. The intelligent color adjustment control system according to claim 1, characterized in that: The MCU control module includes: a control chip U3, a resistor R14 connected to the input end and the 5V voltage of the voltage regulator module and the NRST / PAO pin of the control chip U3, one end of which is connected to the NRST / PAO pin of the control chip U3 and to the resistor R14, and the other end of which is connected to the VSS pin of the control chip U3 and to the PA8 / AD5 pin of the control chip U3 via the capacitor C8, and the capacitor C8 and the capacitor C9 are both grounded.

6. The intelligent color adjustment control system according to claim 5, characterized in that: The control chip U3 is ME32S003AF6P7.

7. The intelligent color adjustment control system according to claim 1, characterized in that: The input terminal and the voltage stabilizing module include: The first-stage voltage stabilization module stabilizes the access voltage to 12V and outputs it to the current signal sampling and amplification module and the post-power-off rapid discharge control module; The second-stage voltage stabilizing module is connected to the first-stage voltage stabilizing module, stabilizes the input voltage to 5V and outputs it to the MCU control module.

8. The intelligent color adjustment control system according to claim 1, characterized in that: The post-power-off rapid discharge control module includes: a fourth switch connected to the input end and the 12V output voltage of the voltage stabilizing module and turned on when power is off, and a load unit connected to the fourth switch and the input end and the power input end of the voltage stabilizing module.

9. The intelligent color adjustment control system according to claim 8, characterized in that: The fourth switch is a nmosfet, a gate of the nmosfet is connected to a 12V voltage, a source is grounded, and a drain is connected to the load unit.

10. The intelligent color adjustment control system according to claim 8 or 9, characterized in that: The load unit includes a resistor R6, a resistor R7, and a resistor R8 connected in parallel.

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