Light control device with power failure no-disturbing function

Abstract

The utility model discloses a light control device with a power failure no-disturbing function, which realizes zero-cross detection by arranging a zero-cross detection circuit, can perform switching operation near the zero point position of an alternating current power supply, reduces electromagnetic interference and surge voltage generated by switching action, provides accurate phase information for a light control circuit, and improves the control accuracy of the light control circuit. By arranging the light control circuit, when the alternating current power supply is interrupted, the light control circuit can keep the current state of the light load, and under the condition of power failure, a user can keep the light stable without manual operation, so that the user experience is improved. According to the technical scheme, impact current generated by sudden power failure of the light load during power interruption is avoided, equipment is protected against damage, a user can wirelessly control the on / off state of the light load through the Bluetooth receiving module, the control flexibility and convenience are improved, and the module provides the possibility of intelligent upgrading for the light control device.

Description

TECHNICAL FIELD

[0001] The utility model relates to light control technical field especially, relate to a light control device with power failure do not disturb function. BACKGROUND

[0002] With the rapid development of smart home technology, people's requirements for the intelligent, convenience and energy saving of home environment are higher and higher, in the light control aspect, the traditional switch control has been unable to meet the demand of modern family, people are more inclined to realize the remote control of light, timing switch and scene mode setting function through intelligent equipment, especially in the power failure situation, how to keep the state of light load unchanged, avoid the light flicker or state change caused by sudden power-on, become the problem to be solved in the field of smart home light control. SUMMARY

[0003] Therefore, the utility model provides a light control device with power failure do not disturb function, when detecting the interruption of AC power supply, the state of current light load can be locked, and the light flicker or state change caused by sudden power-on is avoided.

[0004] The technical scheme of the utility model is realized as follows:

[0005] A light control device with power failure do not disturb function, comprising:

[0006] Input interface is used for receiving 220V AC power supply;

[0007] Output interface is used for connecting light load;

[0008] The voltage reduction circuit is arranged between the input end and the light control module, is used for converting 220V AC power supply into 3.3V DC power supply, and provides working voltage for the light control module;

[0009] The zero-crossing detection circuit is connected with the voltage reduction circuit and is used for detecting the zero point position of AC power supply;

[0010] The light control circuit is used for locking the state of current light load when detecting the interruption of AC power supply;

[0011] The Bluetooth receiving module is used for receiving the signal from external equipment and controlling the on / off state of light load according to the received signal.

[0012] As a further optional scheme of the light control device with power-off nuisance elimination function, the voltage reduction circuit comprises a transformer, a rectifier, a filter and a voltage stabilizer, the transformer is used for voltage conversion of input 220V alternating current power supply, the rectifier is used for conversion of alternating current output by the transformer into direct current, the filter is used for smoothing of direct current output by the rectifier and removal of pulsating components therein, and the voltage stabilizer is used for stabilization of filtered direct current voltage and output of 3.3V direct current power supply to the light control module.

[0013] As a further optional scheme of the light control device with power-off nuisance elimination function, the zero-crossing detection circuit comprises a first diode, a second diode, a first resistor, a second resistor, a third resistor, a fourth resistor and a capacitor, one end of the first diode is electrically connected with the input interface and the voltage reduction circuit respectively, the other end of the first diode is electrically connected with one end of the first resistor, the other end of the first resistor is electrically connected with one end of the second resistor, the other end of the second resistor is electrically connected with one end of the second diode, one end of the third resistor and one end of the fourth resistor respectively, the other end of the second diode and the other end of the third resistor are grounded, the other end of the fourth resistor is electrically connected with one end of the capacitor, and the other end of the capacitor is grounded.

[0014] As a further optional scheme of the light control device with power-off nuisance elimination function, the light control circuit comprises a light control chip and a peripheral circuit thereof.

[0015] As a further optional scheme of the light control device with power-off nuisance elimination function, the Bluetooth receiving module adopts a 2.4G Bluetooth receiving module.

[0016] The light control device with power-off nuisance elimination function has the following beneficial effects: the zero-crossing detection circuit is arranged to realize zero-crossing detection, switch operation can be performed near the zero point of alternating current power supply, electromagnetic interference and surge voltage generated by switch operation are reduced, accurate phase information is provided for the light control circuit, more accurate light control and adjustment are facilitated, when alternating current power supply is interrupted, the light control circuit can maintain the current state of the light load, sudden extinguishing or change of the light load does not cause discomfort or panic to users, in the case of power failure, users do not need to manually operate to maintain the light stable, convenience and comfort in use are improved, impact current generated by sudden power failure of the light load in the case of power supply interruption is avoided, equipment is protected from damage, the Bluetooth receiving module is arranged, users can wirelessly control the on / off state of the light load, control flexibility and convenience are improved, the module provides the possibility of intelligent upgrading for the light control device, can be linked with other smart home devices to realize more rich scene control and automatic control. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Figure 1 The circuit schematic diagram of the light control device with power-off do not disturb function. Specific implementation

[0019] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0020] Reference Figure 1 A light control device with power-off do not disturb function, comprising:

[0021] An input interface for receiving 220V AC power supply;

[0022] An output interface for connecting light load;

[0023] A voltage reduction circuit arranged between the input end and the light control module, for converting 220V AC power supply into 3.3V DC power supply to provide working voltage for the light control module;

[0024] A zero-crossing detection circuit connected with the voltage reduction circuit, for detecting the zero point position of the AC power supply;

[0025] A light control circuit for locking the state of the current light load when detecting the interruption of the AC power supply;

[0026] A Bluetooth receiving module for receiving signals from external devices and controlling the on / off state of the light load according to the received signals.

[0027] In this embodiment, the zero-crossing detection is realized by setting the zero-crossing detection circuit, which can operate the switch near the zero point of the AC power supply, reducing the electromagnetic interference and surge voltage generated by the switching action, providing accurate phase information for the light control circuit, and helping to realize more precise light control and adjustment. By setting the light control circuit, the light control circuit can maintain the current state of the light load when the AC power supply is interrupted, avoiding sudden light outages or changes that cause discomfort or panic to users. In the case of power failure, users do not need to manually operate to maintain stable light, improving the convenience and comfort of use, avoiding the impact current generated by sudden power failure of the light load when the power supply is interrupted, helping to protect the equipment from damage. Through the Bluetooth receiving module, users can realize wireless control of the on / off state of the light load, improving the flexibility and convenience of control. This module provides the possibility of intelligent upgrading for the light control device, which can be linked with other smart home devices to realize more rich scene control and automatic control.

[0028] Preferably, the voltage reduction circuit includes a transformer, a rectifier, a filter and a voltage stabilizer. The transformer is used to convert the input 220V AC power supply to voltage, the rectifier is used to convert the AC power output by the transformer to DC power, the filter is used to smooth the DC power output by the rectifier and remove the pulsating component therein, and the voltage stabilizer is used to stabilize the filtered DC voltage and output a 3.3V DC power supply to the light control module.

[0029] In this embodiment, the transformer is provided to enable the light control device to adapt to different voltage levels of the input power supply, improving the voltage adaptability and versatility of the device, converting high voltage to low voltage, reducing the safety risk of directly operating high voltage, making the entire circuit more safe and reliable; By setting the rectifier, the filter and the voltage stabilizer are provided with necessary DC power input, ensuring continuous and stable operation of the entire voltage reduction circuit, converting AC power to DC power through the rectification process, reducing unnecessary energy loss and improving the utilization efficiency of electric energy; By setting the filter, the pulsating component in the DC power is removed, making the output DC power more stable and smooth, which is conducive to accurate control and stable operation of the subsequent circuit, and the smooth DC power output reduces the generation of electromagnetic interference, which is conducive to the normal operation of the surrounding electronic equipment; By setting the voltage stabilizer, the output 3.3V DC power supply has a stable voltage value, ensuring the normal operation and accurate control of the light control module, helping to reduce system failure and instability caused by voltage fluctuation, and improving the reliability and stability of the entire light control device.

[0030] Preferably, the zero-crossing detection circuit comprises a first diode D1, a second diode D2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4 and a capacitor C3, one end of the first diode D1 is electrically connected with an input interface and a voltage reduction circuit respectively, the other end of the first diode D1 is electrically connected with one end of the first resistor R1, the other end of the first resistor R1 is electrically connected with one end of the second resistor R2, the other end of the second resistor R2 is electrically connected with one end of the second diode D2, one end of the third resistor R3 and one end of the fourth resistor R4 respectively, the other end of the second diode D2 and the other end of the third resistor R3 are grounded, the other end of the fourth resistor R4 is electrically connected with one end of the capacitor C3, and the other end of the capacitor C3 is grounded.

[0031] In the embodiment, the circuit can convert the sine waveform of the alternating power supply into a unidirectional half-wave rectified signal through the rectification of the diode, when the alternating power supply waveform passes through the zero point, the diode is not conductive, at this time, the current in the circuit will be mutated, and the mutation can be captured by the subsequent circuit, so that the accurate detection of the zero point position is realized; the resistance and the capacitor in the circuit constitute a simple RC filter, which is used for smoothing the rectified signal, removing high-frequency noise and interference, which helps to ensure that the detected zero point position is accurate and reliable, and avoids the false detection caused by noise or interference; the zero-crossing detection circuit adopts a relatively simple combination of elements, without using complex integrated circuits or expensive elements, which makes the cost of the circuit lower, and is also conducive to the miniaturization and integration of the circuit.

[0032] Preferably, the light control circuit comprises a light control chip IC2 and a peripheral circuit thereof.

[0033] Preferably, the Bluetooth receiving module adopts a 2.4G Bluetooth receiving module.

[0034] The above only describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A light control device with a power failure do not disturb function, characterized by, The application relates to a 220V AC power supply control device for a light load, which comprises the following parts: an input interface for receiving 220V AC power supply; an output interface for connecting a light load; a voltage reduction circuit arranged between the input end and a light control module, which is used for converting the 220V AC power supply into 3.3V DC power supply to provide working voltage for the light control module; a zero-crossing detection circuit connected with the voltage reduction circuit, which is used for detecting the zero point position of the AC power supply; a light control circuit, which is used for locking the state of the current light load when the AC power supply is interrupted; a Bluetooth receiving module, which is used for receiving signals from external devices and controlling the on / off state of the light load according to the received signals.

2. The light control device with power failure do-not-disturb function according to claim 1, characterized in that, The voltage reduction circuit comprises a transformer, a rectifier, a filter and a voltage stabilizer, the transformer is used for voltage conversion of the input 220V AC power supply, the rectifier is used for converting the AC power output by the transformer into DC power, the filter is used for smoothing the DC power output by the rectifier and removing the pulsating component, and the voltage stabilizer is used for stabilizing the filtered DC voltage and outputting 3.3V DC power supply to the light control module.

3. The light control device with power failure do-not-disturb function according to claim 2, characterized in that, The zero-crossing detection circuit comprises a first diode, a second diode, a first resistor, a second resistor, a third resistor, a fourth resistor and a capacitor, one end of the first diode is electrically connected with the input interface and the voltage reduction circuit respectively, the other end of the first diode is electrically connected with one end of the first resistor, the other end of the first resistor is electrically connected with one end of the second resistor, the other end of the second resistor is electrically connected with one end of the second diode, one end of the third resistor and one end of the fourth resistor respectively, the other end of the second diode and the other end of the third resistor are grounded, the other end of the fourth resistor is electrically connected with one end of the capacitor, and the other end of the capacitor is grounded.

4. The light control device with power failure do-not-disturb function according to claim 1, characterized in that, The light control circuit comprises a light control chip and its peripheral circuit.

5. The light control device with power failure do-not-disturb function according to claim 4, characterized in that, The Bluetooth receiving module adopts a 2.4G Bluetooth receiving module.

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