LED silicon controlled rectifier dimming and color adjusting and emergency night lamp circuit

Abstract

The utility model discloses an LED silicon controlled rectifier light and color modulation and emergency night lamp circuit, comprising a power supply input module which is connected to a silicon controlled rectifier light modulation drive; the silicon controlled rectifier dimming drive controls the LED main lamp and is connected to the charging and power supply circuit of the battery; a detection circuit and a night lamp are arranged outside the LED main lamp, the battery supplies power to the night lamp, and the detection circuit controls the night lamp to be turned on when the LED main lamp is turned off and the ambient light brightness is smaller than a threshold value. The power supply has a high-efficiency energy management system and a flexible dimming mechanism, and can be automatically switched to an emergency mode in case of power failure.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lighting technical field, especially relate to a LED silicon controlled rectifier light modulation and color modulation and emergency night lamp circuit. BACKGROUND

[0002] In modern life, the demand for LED light modulation emergency night lamp is increasing, especially in power failure, natural disasters or other emergency situations, people need reliable lighting equipment to ensure safety and convenience. Traditional night light mostly uses incandescent lamp or fluorescent lamp, which has high energy consumption and is not flexible in brightness adjustment. In this context, LED lamp gradually becomes the preferred light source of night light due to its low energy consumption, long service life and excellent light modulation characteristics.

[0003] The utility model discloses a linear constant current circuit of LED with silicon controlled rectifier light modulation function and small night light illumination, including rectifier unit, silicon controlled rectifier light modulator unit, main light illumination unit, night light illumination unit and night light control unit, and the main light illumination unit and night light illumination unit can be compatible with silicon controlled rectifier light modulation function;Among them, the night light control unit includes control chip U2 with model PM2042;In actual use, compared with the existing constant current drive circuit with silicon controlled rectifier light modulation function and with night light, the application realizes the lightening control of the night light illumination unit by setting the control chip U2 with model PM2042 and matching the corresponding peripheral circuit for the control chip U2. Utility model content

[0004] The LED light modulation emergency night lamp circuit aims to solve some problems in the prior art, including the accuracy of brightness adjustment, the control of energy consumption and the reliability in emergency situations. Traditional light modulation technology often cannot meet the needs of users in different lighting environments, or loses function when the power fails.

[0005] To solve the above technical problems, the utility model provides a LED silicon controlled rectifier light modulation and color modulation and emergency night lamp circuit, including power supply input module, power supply input module is connected into silicon controlled rectifier light drive;The silicon controlled rectifier light drive controls the LED main light, and is connected into the charging and power supply circuit of the battery at the same time;The LED main light is externally provided with a detection circuit and a night light, and the battery supplies power to the night light, and when the LED main light is off and the ambient brightness is less than the threshold value, the detection circuit controls the night light to turn on.

[0006] Specifically, the silicon controlled rectifier light drive includes a silicon controlled rectifier light modulation depth optimization module and a silicon controlled rectifier master circuit primary side, the silicon controlled rectifier light modulation depth optimization module adjusts the brightness by changing the conduction angle of the silicon controlled rectifier and the alternating current input period of the circuit, and the silicon controlled rectifier master circuit primary side controls the trigger signal of the silicon controlled rectifier.

[0007] Specifically, the triac dimming drive is connected to the rectifier filter module and the charging and power supply circuit of the battery through a transformer.

[0008] Specifically, the rectifier filter module is provided with a current ripple suppression module at the connection with the LED main lamp, and the current ripple suppression module smoothes and stabilizes the output current through a capacitor and a filter.

[0009] Specifically, the power supply input module is provided with a surge protection circuit, which includes a fuse and a TVS diode, and rapidly disconnects the circuit when the power supply is transiently too high.

[0010] Specifically, the LED main lamp is externally provided with a color temperature adjustment module, which adjusts the working voltage or current of different LED beads to change the color temperature.

[0011] Specifically, the LED triac dimming and color adjusting and emergency night light circuit further comprises an EMI filter module, which reduces electromagnetic interference through an EMI filter capacitor.

[0012] Specifically, the battery is a lithium battery, and the power supply circuit of the battery supplies power to the night light in the case of power supply input disconnection, so that the night light can still work normally without main power supply.

[0013] The beneficial effects of the present application are: it has an efficient energy management system, a flexible dimming mechanism, and the ability to automatically switch to an emergency mode when power is off. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The overall circuit diagram of the present application.

[0015] Figure 2 The LED main lamp circuit diagram of the present application.

[0016] Figure 3 The color temperature adjustment module circuit diagram of the present application.

[0017] Figure 4 The detection and driving circuit diagram of the night light of the present application.

[0018] Figure 5 The battery charging circuit diagram of the present application. DETAILED DESCRIPTION

[0019] The present application will be described in detail below in conjunction with the drawings and examples.

[0020] Example 1: an LED triac dimming and color adjusting and emergency night light circuit, as Figure 1As shown, including power input module, power input module into silicon light drive; silicon light drive control LED main light, while connected to the battery charging and power supply circuit; as Figure 4 As shown, the LED main light is externally provided with a detection circuit and a night light, and the battery supplies power to the night light. When the LED main light is off and the ambient brightness is less than a threshold value, the detection circuit controls the night light to turn on.

[0021] With the continuous development of LED technology, its application in indoor lighting, emergency lighting and smart home is gradually popularized. LED lamps have become an important part of modern lighting equipment due to their low power consumption, high brightness, long service life and environmental protection.

[0022] The LED dimming emergency night light circuit of the utility model aims at providing a high-efficiency, flexible and emergency function lighting solution, which can automatically switch working modes under normal power supply and power-off state. The circuit design integrates advanced dimming technology, which can realize multi-level brightness adjustment to adapt to different environments and user needs. At the same time, it has an emergency power management function, which can automatically start the standby power supply when the power is off to ensure the continuous light emission of the night light.

[0023] This embodiment has two lighting modes. In the down lamp mode, the main light is on, and the normal on-off and dimming functions can be realized through the dimmer, and the battery is in normal charging action. In the night light emergency mode, the battery supplies power, and the night light is turned on after the detection circuit detects the state of the main light and the ambient light. When the main light is on, the circuit automatically switches to the main light working state, and the night light does not work to save energy. When the main light is off, the output of the ambient light sensor controls whether the night light is on or off, providing emergency lighting function. At the same time, the computer can manually adjust the color temperature and brightness to meet the needs of different use scenarios.

[0024] The detection circuit outside the night light is directly connected to the driving circuit of the night light. In this embodiment, the night light is turned on when the main light is off and the ambient light is less than 50 lux.

[0025] The silicon light drive includes a silicon light depth optimization module and a silicon main control circuit primary side. The silicon light depth optimization module adjusts the brightness and the AC input period of the circuit by changing the conduction angle of the silicon. The silicon main control circuit primary side controls the trigger signal of the silicon.

[0026] In the silicon light depth optimization module, silicon is used as the core, and dimming is realized by changing the conduction angle of silicon. The brightness is adjusted with the AC input period of the circuit. The dimming depth is optimized through feedback design to ensure the smoothness and adjustability of dimming.

[0027] The primary side of the main control circuit of the SCR controls the trigger signal of the SCR to ensure that it is turned on at the appropriate time. This part often uses elements such as optocouplers to achieve isolation to protect the control circuit.

[0028] The SCR dimming drive is connected to the rectifier filtering module and the battery charging and power supply circuit through the transformer. The rectifier filtering module is connected to the LED main light.

[0029] The rectifier filtering module realizes the rectification of input alternating current, converts it into direct current, and performs smoothing filtering to provide a stable output voltage.

[0030] The rectifier filtering module is provided with a current ripple suppression module at the connection with the LED main light. The current ripple suppression module smoothes and stabilizes the output current through capacitors and filters.

[0031] To prevent the flickering phenomenon of the LED, the current ripple suppression module enhances the smoothing and stabilization of the output current, usually using capacitors or filters to achieve.

[0032] The power supply input module is provided with a surge protection circuit, which includes a fuse and a TVS diode, which quickly disconnects the circuit when the power supply is transiently high. This part of the circuit is used for overvoltage protection of the input voltage to prevent damage to the circuit caused by power surges. Generally, it contains a fuse and a TVS diode, which can quickly disconnect the circuit when the power supply is transiently high.

[0033] The main light circuit independently drives two groups of LED lights, which can achieve different color temperature adjustment and output different brightness by controlling the current. The LED main light is externally provided with a color temperature adjustment module, as shown in Figure 3 The color temperature adjustment module adjusts the working voltage or current of different LED beads to achieve color temperature change.

[0034] The LED SCR dimming and color adjustment and emergency night light circuit also includes an EMI filter module, which reduces electromagnetic interference through an EMI filter capacitor. The EMI filter capacitor is used to further reduce electromagnetic interference and improve the stability of the device to ensure the normal operation of electronic components.

[0035] The battery is a lithium battery, and the battery power supply circuit supplies power to the night light in the case of power supply input disconnection, so that the night light can still work normally without the main power supply. The battery charging circuit, as shown in Figure 5 includes a protection circuit to prevent overcharging, overdischarging, and other phenomena to ensure the safety and service life of the battery.

[0036] Embodiment two: an LED triac dimming and emergency night light circuit, including a power input module connected to a triac dimming driver; the triac dimming driver controls the LED main light, and is connected to the charging and power supply circuit of the battery; the LED main light is externally provided with a detection circuit and a night light, and the battery supplies power to the night light; when the LED main light is off and the ambient brightness is less than a threshold value, the detection circuit controls the night light to turn on.

[0037] With the continuous development of LED technology, its application in indoor lighting, emergency lighting and smart home has gradually become popular. LED lamps have become an important part of modern lighting equipment due to their low power consumption, high brightness, long service life and environmental protection. In modern life, the demand for LED dimming emergency night lights is increasing, especially in power outages, natural disasters or other emergency situations, people need reliable lighting equipment to ensure safety and convenience. Traditional night lights mostly use incandescent or fluorescent lamps, which have high energy consumption and are not flexible in brightness adjustment. In this context, LED lamps have gradually become the preferred light source for night lights due to their low energy consumption, long service life and excellent dimming characteristics.

[0038] The LED dimming emergency night light circuit of the utility model aims at providing a high-efficiency, flexible and emergency function lighting solution, which can automatically switch between normal and emergency modes. The circuit design integrates advanced dimming technology, which can realize multi-level brightness adjustment to adapt to different environments and user needs. At the same time, it has an emergency power management function, which can automatically activate the backup power supply in case of power failure to ensure continuous lighting of the night light.

[0039] The LED dimming emergency night light circuit aims to solve some problems in the prior art, including the accuracy of brightness adjustment, the control of energy consumption and the reliability in emergency situations. Traditional dimming technology often cannot meet the needs of users in different lighting environments, or loses its function in power failure. Therefore, the circuit design needs to have an efficient energy management system, a flexible dimming mechanism, and the ability to automatically switch to emergency mode in case of power failure.

[0040] This embodiment has two lighting modes. In the downlight mode, the main light is on, and the normal on-off and dimming functions can be performed through the dimmer, and the battery is charging normally. In the night light emergency mode, the battery supplies power, and the detection circuit detects the state of the main light and the ambient light, and then turns on the night light. When the main light is on, the circuit automatically switches to the main light working state, and the night light does not work to save energy. When the main light is off, the output of the ambient light sensor controls whether the night light is on or off, providing emergency lighting function. At the same time, the computer can manually adjust the color temperature and brightness to meet the needs of different use scenarios.

[0041] The detection circuit outside the night light is directly connected to the driving circuit of the night light, and in the embodiment, the night light is turned on when the main light is off and the ambient light is less than 50 lux.

[0042] The silicon-controlled light adjustment drive includes a silicon-controlled light adjustment depth optimization module and a silicon-controlled master circuit primary side, the silicon-controlled light adjustment depth optimization module adjusts the brightness and the AC input period of the circuit by changing the conduction angle of the silicon-controlled rectifier, and the silicon-controlled master circuit primary side controls the trigger signal of the silicon-controlled rectifier.

[0043] In the silicon-controlled light adjustment depth optimization module, the silicon-controlled rectifier is used as the core, and the light adjustment is realized by changing the conduction angle of the silicon-controlled rectifier, and the brightness is adjusted with the AC input period of the circuit. The light adjustment depth is optimized through feedback design to ensure the smoothness and adjustability of the light adjustment.

[0044] In the silicon-controlled master circuit primary side, the main control circuit is used to control the trigger signal of the silicon-controlled rectifier to ensure that it is turned on at the appropriate time. This part often uses optical couplers and other elements to realize isolation to protect the control circuit.

[0045] The silicon-controlled light adjustment drive is connected to the rectifier filtering module and the charging and power supply circuit of the battery through the transformer, and the rectifier filtering module is connected to the LED main light.

[0046] The rectifier filtering module realizes the rectification of the input AC power, converts it into DC power, and performs smooth filtering to provide a stable output voltage.

[0047] The rectifier filtering module is provided with a current ripple suppression module at the connection with the LED main light, and the current ripple suppression module smoothes and stabilizes the output current through capacitors and filters.

[0048] In order to prevent the flickering phenomenon of the LED, the current ripple suppression module strengthens the smoothing and stability of the output current, which is usually realized by using capacitors or filters.

[0049] The surge protection circuit is provided in the power supply input module, and the surge protection circuit includes a fuse and a TVS diode, which rapidly disconnects the circuit when the power supply is transiently high. This part of the circuit is used for overvoltage protection of the input voltage to prevent damage to the circuit caused by power surges. Generally, it contains a fuse and a TVS diode, which can rapidly disconnect the circuit when the power supply is transiently high.

[0050] The main light circuit of the embodiment includes two routes of 2700K and 6500K, a total of two groups of LED lights. For example, Figure 2As shown, the main light circuit independently drives two groups of LED lights, and different color temperature adjustment can be achieved, and different brightness output is achieved by regulating the current. The LED main light is externally provided with a color temperature adjustment module, and the color temperature adjustment module adjusts the working voltage or current of different LED beads to realize the change of color temperature. In this embodiment, the color temperature adjustment module can adjust the working voltage or current of different LED beads to realize the change of color temperature, thereby providing a light effect of 2700K to 6500K to meet the needs of different environments.

[0051] The LED triac dimming and color adjusting and emergency night light circuit further comprises an EMI filter module, and the EMI filter module reduces electromagnetic interference through an EMI filter capacitor. The EMI filter capacitor is used to further reduce electromagnetic interference and improve the stability of the device to ensure the normal operation between electronic components. The EMI filter capacitor is a capacitor specially used to suppress and reduce electromagnetic interference. In electronic devices, high-frequency interference signals may enter the device through power lines, signal lines, etc., which may interfere with the normal operation of the device. The EMI filter capacitor introduces high-frequency interference signals into the ground (common mode) or hot line (differential mode) through its capacitance characteristics, thereby filtering out interference signals and ensuring the normal operation of electronic devices. The working principle of the EMI filter capacitor is based on the impedance characteristics of the capacitor to alternating current signals. The impedance of the capacitor to high-frequency signals is small, while the impedance to low-frequency signals is large. Therefore, when a high-frequency interference signal passes through the EMI filter capacitor, the capacitor will present a low impedance state, allowing the interference signal to flow into the ground through the capacitor, thereby achieving the purpose of filtering out interference.

[0052] The battery is a lithium battery, and the power supply circuit of the battery supplies power to the night light in the case of power input disconnection, so that the night light can still work normally without the main power supply. The charging circuit of the battery includes a protection circuit to prevent overcharging, overdischarging and the like, to ensure the safety and service life of the battery.

[0053] The above specific embodiments are only the preferred embodiments of the utility model, and do not limit the specific implementation structure and implementation range of the utility model. In fact, some equivalent changes can also be made according to the shape, structure and design purpose of the utility model. Therefore, any equivalent changes made according to the shape, structure and design purpose of the utility model should be included in the protection scope of the utility model, that is, these equivalent changes should be protected by the utility model.

Claims

1. An LED triac dimming, color changing, and emergency night light circuit, characterized by, The power supply input module is connected to the silicon-controlled dimming drive, the silicon-controlled dimming drive controls the LED main light, and the charging and power supply circuit of the battery is connected; the detection circuit and the night light are arranged outside the LED main light, the battery supplies power to the night light, and when the LED main light is off and the ambient brightness is less than a threshold value, the detection circuit controls the night light to turn on.

2. The LED-triac dimming and emergency night light circuit according to claim 1, wherein, The silicon-controlled dimming drive includes a silicon-controlled dimming depth optimization module and a silicon-controlled main control circuit primary side, the silicon-controlled dimming depth optimization module adjusts the brightness by changing the conduction angle of the silicon-controlled rectifier and the alternating current input period of the circuit, and the silicon-controlled main control circuit primary side controls the trigger signal of the silicon-controlled rectifier.

3. The LED-triac dimming and emergency night light circuit according to claim 1 or 2, characterized in that, The silicon-controlled dimming drive is connected to the rectifier filter module and the charging and power supply circuit of the battery through the transformer, and the rectifier filter module is connected to the LED main light.

4. The LED-triac dimming and emergency night light circuit of claim 3, wherein, The current ripple suppression module is arranged at the connection between the rectifier filter module and the LED main light, and the current ripple suppression module smoothes and stabilizes the output current through the capacitor and the filter.

5. The LED triac dimming, color changing, and emergency nightlight circuit of claim 1, wherein, The surge protection circuit is arranged in the power supply input module, and the surge protection circuit includes a fuse and a TVS diode, which rapidly disconnects the circuit when the power supply is transiently high.

6. The LED triac dimming, color changing, and emergency nightlight circuit of claim 1, wherein, The color temperature adjustment module is arranged outside the LED main light, and the color temperature adjustment module adjusts the working voltage or current of different LED beads to change the color temperature.

7. The LED-triac dimming and emergency night light circuit of claim 1, wherein, The LED silicon-controlled dimming and color adjustment and emergency night light circuit further includes an EMI filter module, and the EMI filter module reduces electromagnetic interference through the EMI filter capacitor.

8. The LED-triac dimming and emergency night light circuit of claim 1, wherein, The battery is a lithium battery, and the power supply circuit of the battery supplies power to the night light when the power supply input is disconnected, so that the night light can work normally without the main power supply.

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