CN212211460U - Low standby power consumption lighting circuit and lighting lamp - Google Patents
Low standby power consumption lighting circuit and lighting lamp Download PDFInfo
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- CN212211460U CN212211460U CN202021310473.9U CN202021310473U CN212211460U CN 212211460 U CN212211460 U CN 212211460U CN 202021310473 U CN202021310473 U CN 202021310473U CN 212211460 U CN212211460 U CN 212211460U
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Abstract
The utility model discloses a low stand-by power consumption lighting circuit and illumination lamps and lanterns, including AC/DC converting circuit, illumination drive circuit, voltage converting circuit and switch circuit. The AC/DC conversion circuit respectively carries out different direct-current voltage conversion on commercial power to obtain a first voltage signal and a second voltage signal; the lighting driving circuit drives the lighting lamp to illuminate when the lighting driving circuit is in a lighting driving state under the power supply of the first voltage signal; the voltage conversion circuit performs voltage conversion on the second voltage signal and then supplies power to the wireless module; when the lighting lamp is in a standby state, the wireless module controls the switch circuit to cut off a power supply circuit of the lighting driving circuit so as to stop the lighting driving circuit. Therefore, the lighting driving circuit does not work when the lighting lamp is in the standby state, namely, the lighting lamp does not generate standby power consumption when the lighting lamp is in the standby state, so that the whole standby power consumption of the lighting lamp is reduced, and the lighting driving circuit is energy-saving and environment-friendly.
Description
Technical Field
The utility model relates to an intelligence illumination field especially relates to a low stand-by power consumption lighting circuit and illumination lamps and lanterns.
Background
At present, intelligent lighting fixtures mainly include: an AC/DC conversion circuit, an LED (Light Emitting Diode) driving circuit, an LED lamp, an auxiliary power supply circuit and a wireless module. After the intelligent lighting lamp is connected with commercial power, the distribution of power supply lines in the intelligent lighting lamp is substantially as follows: firstly, an AC/DC conversion circuit converts the accessed commercial power into a direct current signal, then the direct current signal is divided into two paths for power supply, and one path is directly supplied to an LED drive circuit, so that the LED drive circuit drives an LED lamp to illuminate; and the other path of the power supply is subjected to voltage conversion through an auxiliary power supply circuit to supply power to the wireless module. Therefore, the standby power consumption of the intelligent lighting lamp mainly comprises the standby power consumption of the LED driving circuit, the standby power consumption of the auxiliary power circuit and the standby power consumption of the wireless module, the standby power consumption of the LED driving circuit is higher, and in addition, the standby power consumption of the auxiliary power circuit and the standby power consumption of the wireless module lead to higher standby power consumption of the whole intelligent lighting lamp, so that the intelligent lighting lamp is not energy-saving and environment-friendly.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a low standby power consumption lighting circuit and illumination lamps and lanterns, illumination drive circuit is out of work when illumination lamps and lanterns are in standby state, does not produce standby power consumption promptly when illumination lamps and lanterns are in standby state to the whole quick-witted standby power consumption of illumination lamps and lanterns has been reduced, and is energy-concerving and environment-protective.
In order to solve the technical problem, the utility model provides a low stand-by power consumption lighting circuit is applied to the illumination lamps and lanterns that contain light and wireless module, include:
the input end of the AC/DC conversion circuit is connected with the mains supply and is used for respectively carrying out different direct-current voltage conversion on the mains supply to obtain a first voltage signal and a second voltage signal;
the illumination driving circuit is respectively connected with the first voltage output end of the AC/DC conversion circuit and the illumination lamp and is used for driving the illumination lamp to illuminate when the illumination driving state is achieved under the power supply of the first voltage signal;
the voltage conversion circuit is respectively connected with the second voltage output end of the AC/DC conversion circuit and the wireless module and is used for performing voltage conversion on the second voltage signal and then supplying power to the wireless module;
the wireless module is used for controlling the switching circuit to cut off the power supply circuit of the lighting driving circuit when the lighting lamp is in a standby state, so that the lighting driving circuit stops working.
Preferably, the AC/DC conversion circuit includes a rectifying circuit, a transformer including a primary coil and a secondary coil with a tap, a first diode, and an AC/DC chip; wherein:
the input end of the rectifying circuit is connected with a mains supply, the positive output end of the rectifying circuit is respectively connected with the first end of the primary coil and the cathode of the first diode, the negative output end of the rectifying circuit is grounded, the second end of the primary coil is respectively connected with the anode of the first diode and the working power supply end of the AC/DC chip, the first end of the secondary coil outputs the first voltage signal to supply power for the lighting driving circuit, the center tap end of the secondary coil outputs the second voltage signal to supply the voltage conversion circuit for voltage conversion, and the second end of the secondary coil is grounded;
the AC/DC chip is used for controlling the energy storage condition of the primary coil according to the voltage output requirement of the transformer, so that the actual output voltage of the transformer meets the voltage output requirement of the transformer.
Preferably, the transformer further comprises an auxiliary coil for extracting energy from the primary coil; the AC/DC conversion circuit also comprises a second diode, an adjustable resistor and a first capacitor; wherein:
a first end of the auxiliary coil is connected with an anode of the second diode, a second end of the auxiliary coil is grounded, a cathode of the second diode is connected with a first end of the adjustable resistor, a second end of the adjustable resistor is respectively connected with a standby power supply end of the AC/DC chip and a first end of the first capacitor, and a second end of the first capacitor is grounded;
when the lighting lamp is in a normal working state, the AC/DC chip supplies power through a working power supply end of the AC/DC chip; and when the lighting lamp is in a standby state, the lighting lamp is powered by a standby power supply end.
Preferably, the voltage conversion circuit includes:
the LDO chip is used for performing voltage conversion on the second voltage signal according to a preset output voltage threshold value and supplying the converted voltage signal to the wireless module for use; wherein the second voltage signal is greater than a preset output voltage threshold.
Preferably, the switching circuit includes a first resistor, a second resistor, a third resistor, a first switching tube and a second switching tube; wherein:
a first end of the first resistor is connected with a first end of the first switch tube and a first voltage output end of the AC/DC conversion circuit respectively, a second end of the first switch tube is connected with a power supply end of the lighting driving circuit, a second end of the first resistor is connected with a control end of the first switch tube and a first end of the second resistor respectively, a second end of the second resistor is connected with a first end of the second switch tube, a control end of the second switch tube is connected with a first end of the third resistor, a second end of the third resistor is connected with the wireless module, and a second end of the second switch tube is grounded;
the wireless module is specifically used for controlling the conduction condition of the first switch tube by controlling the conduction condition of the second switch tube, so that when the lighting lamp is in a standby state, the first switch tube is controlled to cut off a power supply line of the lighting driving circuit, and the lighting driving circuit stops working.
Preferably, the illumination lamp comprises a warm light lamp and a cold light lamp;
correspondingly, the lighting driving circuit comprises:
the warm light driving circuit is respectively connected with the wireless module and the warm light and is used for controlling the warm light to illuminate under the power supply of the first voltage signal and the driving of the wireless module;
and the cold light driving circuit is respectively connected with the wireless module and the cold light lamp and is used for controlling the cold light lamp to illuminate under the power supply of the first voltage signal and the driving of the wireless module.
Preferably, the low standby power consumption lighting circuit further includes:
the input end is connected with a mains supply, the output end is connected with a mains supply detection circuit connected with the wireless module, and the mains supply detection circuit is used for detecting a voltage signal of the mains supply and transmitting a detected voltage detection signal to the wireless module so that the wireless module uploads the voltage detection signal to a terminal interactive with the wireless module.
Preferably, the mains supply detection circuit comprises a voltage monitoring chip, a voltage division circuit for reducing the mains supply to an input voltage allowable range of the voltage monitoring chip, a zener diode, a photocoupler including a light emitting diode and a photocoupler triode, a fourth resistor, a fifth resistor, a second capacitor and a third capacitor; wherein:
the first end of the voltage division circuit is connected with a live wire of a commercial power, the second end of the voltage division circuit is respectively connected with the cathode of the Zener diode and the VCC end of the voltage monitoring chip, the anode of the Zener diode is respectively connected with the zero line of the commercial power, the GND end of the voltage monitoring chip and the first end of the second capacitor, the second end of the second capacitor is respectively connected with the first end of the fourth resistor and the anode of the light-emitting diode, the cathode of the light emitting diode is respectively connected with the second end of the fourth resistor and the Reset end of the voltage monitoring chip, the collector of the optocoupler triode is respectively connected with the first end of the fifth resistor and the first end of the third capacitor, and the common end of the optocoupler triode is connected with the wireless module, a second end of the fifth resistor is connected to the output voltage of the voltage conversion circuit, and an emitter of the optocoupler triode is connected with a second end of the third capacitor, and a common end of the optocoupler triode is grounded;
the voltage monitoring chip is used for controlling the light emitting diode to be cut off when the mains voltage reaches a preset voltage monitoring point so as to output a high-level signal to the wireless module.
Preferably, the wireless module is a bluetooth module.
In order to solve the technical problem, the utility model also provides a lighting lamp, including light and wireless module, still include any kind of low stand-by power consumption lighting circuit of aforesaid.
The utility model provides a low stand-by power consumption lighting circuit, including AC/DC converting circuit, illumination drive circuit, voltage conversion circuit and switch circuit. The AC/DC conversion circuit respectively carries out different direct-current voltage conversion on commercial power to obtain a first voltage signal and a second voltage signal; the lighting driving circuit drives the lighting lamp to illuminate when the lighting driving circuit is in a lighting driving state under the power supply of the first voltage signal; the voltage conversion circuit performs voltage conversion on the second voltage signal and then supplies power to the wireless module; when the lighting lamp is in a standby state, the wireless module controls the switch circuit to cut off a power supply circuit of the lighting driving circuit so as to stop the lighting driving circuit. Therefore, the lighting driving circuit does not work when the lighting lamp is in the standby state, namely, the lighting lamp does not generate standby power consumption when the lighting lamp is in the standby state, so that the whole standby power consumption of the lighting lamp is reduced, and the lighting driving circuit is energy-saving and environment-friendly.
The utility model also provides a lighting lamp has the same beneficial effect with above-mentioned lighting circuit.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the prior art and the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a lighting circuit with low standby power consumption according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a lighting circuit with low standby power consumption according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a lighting driving circuit according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a specific structure of a commercial power detection circuit provided in an embodiment of the present invention.
Detailed Description
The core of the utility model is to provide a low stand-by power consumption lighting circuit and illumination lamps and lanterns, illumination drive circuit is out of work when illumination lamps and lanterns are in standby state, does not produce stand-by power consumption promptly when illumination lamps and lanterns are in standby state to the whole machine stand-by power consumption of illumination lamps and lanterns has been reduced, and is energy-concerving and environment-protective.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a lighting circuit with low standby power consumption according to an embodiment of the present invention.
This low stand-by power consumption lighting circuit is applied to the illumination lamps and lanterns that contain light and wireless module, includes:
the input end is connected to an AC/DC conversion circuit 100 of the mains supply, and is used for respectively carrying out different direct-current voltage conversion on the mains supply to obtain a first voltage signal and a second voltage signal;
the lighting driving circuit 200 is respectively connected to the first voltage output end of the AC/DC conversion circuit 100 and the lighting lamp, and is configured to drive the lighting lamp to illuminate when the lighting driving state is achieved under the power supply of the first voltage signal;
the voltage conversion circuit 300 is respectively connected with the second voltage output end of the AC/DC conversion circuit 100 and the wireless module, and is configured to perform voltage conversion on the second voltage signal and supply power to the wireless module;
and the switch circuit 400 is arranged on a power supply circuit of the lighting driving circuit 200 and is connected with the wireless module, and the wireless module is used for controlling the switch circuit 400 to cut off the power supply circuit of the lighting driving circuit 200 when the lighting lamp is in a standby state so as to stop the lighting driving circuit 200.
Specifically, the low standby power consumption lighting circuit of the present application includes an AC/DC conversion circuit 100, a lighting driving circuit 200, a voltage conversion circuit 300, and a switching circuit 400, and its operating principle is:
the input end of the AC/DC conversion circuit 100 is connected to the mains supply, and it can perform different DC voltage conversion on the input mains supply respectively to obtain two voltage signals with different voltage values, which are the first voltage signal and the second voltage signal respectively.
The first voltage signal is output from the first voltage output terminal of the AC/DC conversion circuit 100 to the lighting driving circuit 200 to supply power to the lighting driving circuit 200. The lighting driving circuit 200 drives the lighting lamp to illuminate when the lighting driving circuit is in the lighting driving state under the power supply of the first voltage signal.
The second voltage signal is output from the second voltage output terminal of the AC/DC conversion circuit 100 to the voltage conversion circuit 300. After receiving the second voltage signal, the voltage conversion circuit 300 performs voltage conversion on the second voltage signal, and provides the converted voltage signal to the wireless module for use, so as to provide the wireless module with electric energy required by its operation.
Based on this, considering that the lighting driving circuit 200 will generate higher standby power consumption if the lighting fixture is in standby state and the lighting driving circuit 200 is in standby state, the present application further provides the switch circuit 400 on the power supply line of the lighting driving circuit 200, the switch state of the switch circuit 400 is controlled by the wireless module, and the wireless module controls the switch circuit 400 to cut off the power supply line of the lighting driving circuit 200 to stop the lighting driving circuit 200 when the lighting fixture is in standby state, that is, when the lighting fixture is in standby state, the lighting driving circuit 200 stops working without generating standby power consumption.
The utility model provides a low stand-by power consumption lighting circuit, including AC/DC converting circuit, illumination drive circuit, voltage conversion circuit and switch circuit. The AC/DC conversion circuit respectively carries out different direct-current voltage conversion on commercial power to obtain a first voltage signal and a second voltage signal; the lighting driving circuit drives the lighting lamp to illuminate when the lighting driving circuit is in a lighting driving state under the power supply of the first voltage signal; the voltage conversion circuit performs voltage conversion on the second voltage signal and then supplies power to the wireless module; when the lighting lamp is in a standby state, the wireless module controls the switch circuit to cut off a power supply circuit of the lighting driving circuit so as to stop the lighting driving circuit. Therefore, the lighting driving circuit does not work when the lighting lamp is in the standby state, namely, the lighting lamp does not generate standby power consumption when the lighting lamp is in the standby state, so that the whole standby power consumption of the lighting lamp is reduced, and the lighting driving circuit is energy-saving and environment-friendly.
On the basis of the above-described embodiment:
referring to fig. 2, fig. 2 is a schematic diagram of a specific structure of a lighting circuit with low standby power consumption according to an embodiment of the present invention.
As an alternative embodiment, the AC/DC conversion circuit 100 includes a rectifying circuit, a transformer T1 including a primary coil and a secondary coil with a tap, a first diode D1, and an AC/DC chip U1; wherein:
the input end of the rectifying circuit is connected with mains supply, the positive output end of the rectifying circuit is respectively connected with the first end of the primary coil and the cathode of the first diode D1, the negative output end of the rectifying circuit is grounded, the second end of the primary coil is respectively connected with the anode of the first diode D1 and the working power supply end of the AC/DC chip U1, the first end of the secondary coil outputs a first voltage signal to supply power for the lighting driving circuit 200, the center tap end of the secondary coil outputs a second voltage signal to supply the voltage conversion circuit 300 for voltage conversion, and the second end of the secondary coil is grounded;
the AC/DC chip U1 is used to control the energy storage condition of the primary coil according to the voltage output requirement of the transformer T1, so that the actual output voltage of the transformer T1 meets the voltage output requirement.
Specifically, the AC/DC conversion circuit 100 of the present application includes a rectifying circuit, a transformer T1, a first diode D1 for preventing reverse operation, and an AC/DC chip U1, and its operating principle is:
an input end of a rectifying circuit (for example, a full-bridge rectifying circuit BD1 shown in fig. 2) is connected to a commercial power, and the rectifying circuit can rectify the input commercial power and input a rectified commercial power signal obtained by rectification to a primary coil of a transformer T1 (a coil between pins 1 and 3 of a transformer T1), so that a current also flows through a secondary coil of the transformer T1 (a coil between pins 6 and 7 of a transformer T1) based on an electromagnetic induction principle, and a voltage signal output from a first end of the secondary coil (a pin 6 of a transformer T1) serves as a first voltage signal to supply power to the lighting driving circuit 200; the voltage signal output from the center tap of the secondary winding (pin 8 of transformer T1) is used as the second voltage signal for voltage conversion by the voltage conversion circuit 300.
Based on this, the second terminal of the primary winding of the transformer T1 (pin 3 of the transformer T1) is connected to the working power terminal of the AC/DC chip U1, and the AC/DC chip U1 can control the energy storage condition of the primary winding according to the voltage output requirement of the transformer T1, so that the actual output voltage of the transformer T1 meets the voltage output requirement.
In addition, as shown in fig. 2, the present application may further include: a fuse F1 for blowing the circuit line when the circuit is overcurrent; a thermistor RT1 for measuring temperature; a voltage dependent resistor VR1 for clamping voltage and absorbing excessive current when the circuit is over-voltage; a capacitor CX1 for filtering and stabilizing voltage; common mode inductance LF1 for filtering electromagnetic interference in the circuit. This application still can add between rectifier circuit and transformer T1's primary coil: the pi-type filter circuit consists of a capacitor EC1, an inductor L1 and a capacitor EC 2; the filter circuit is composed of a resistor R8 and a capacitor C1 which are connected in parallel, so that the safety and the reliability of the circuit are improved.
As an alternative embodiment, the transformer T1 further includes an auxiliary coil for extracting energy from the primary coil; the AC/DC conversion circuit 100 further includes a second diode D2, an adjustable resistor R4, and a first capacitor C7; wherein:
a first end of the auxiliary coil is connected with an anode of a second diode D2, a second end of the auxiliary coil is grounded, a cathode of a second diode D2 is connected with a first end of an adjustable resistor R4, a second end of the adjustable resistor R4 is respectively connected with a standby power supply end of the AC/DC chip U1 and a first end of a first capacitor C7, and a second end of a first capacitor C7 is grounded;
when the lighting lamp is in a normal working state, the AC/DC chip U1 supplies power through a working power supply end of the lighting lamp; when the lighting lamp is in a standby state, the power is supplied by the standby power supply end.
Further, the transformer T1 of the present application further includes an auxiliary winding (winding between pins 4 and 5 of the transformer T1), and the AC/DC conversion circuit 100 further includes a second diode D2 for preventing reverse, an adjustable resistor R4, and a first capacitor C7, and the operation principle thereof is as follows:
when a current flows through the primary coil of the transformer T1, a current also flows through the auxiliary coil based on the principle of electromagnetic induction. The electric energy in the auxiliary coil is supplied to the standby power supply end of the AC/DC chip U1 through the adjustable resistor R4, and the voltage and the current input by the standby power supply end of the AC/DC chip U1 are adjustable based on the adjustable resistance characteristic of the adjustable resistor R4.
Based on this, the AC/DC chip U1 can be supplied with power by the primary coil of the transformer T1 at high voltage, and can also be supplied with power by the auxiliary coil at low voltage, specifically, the configuration is as follows: when the lighting lamp is in a normal working state, the AC/DC chip U1 is supplied with high voltage through the primary coil of the transformer T1; when the lighting fixture is in a standby state, the AC/DC chip U1 switches an internal power supply path to supply power through the auxiliary coil at a low voltage, so that the standby power consumption of the AC/DC chip U1 is reduced. It should be noted that, when the AC/DC chip U1 is powered by the auxiliary coil at a low voltage, the voltage and current input by the standby power supply terminal of the AC/DC chip U1 can be reduced to the lowest voltage and current allowed by the AC/DC chip U1 by adjusting the resistance of the adjustable resistor R4, so as to maximally reduce the standby power consumption of the AC/DC chip U1.
More specifically, as shown in fig. 2, the AC/DC chip U1 may adopt an LNK6663K chip, and the D pin of the LNK6663K chip is used as an operating power supply terminal of the chip, and is supplied with high voltage power; the BP pin is used as a standby power supply end of the chip and used for low-voltage power supply; the CP pin is externally connected with a resistor R6 and a capacitor C8 which are connected in series, and a capacitor C9 which is connected in parallel with a series circuit formed by the resistor R6 and the capacitor C8, and is used for internal filtering of the chip; the FB pin is externally connected with a voltage division circuit consisting of an adjustable resistor R10 and an adjustable resistor R11 and used for dividing the voltage of the auxiliary coil and a capacitor C6 used for filtering and stabilizing the voltage, and the purpose is as follows: the LNK6663K chip determines the actual output voltage of the transformer T1 based on the voltage signal fed back by the FB pin, and controls the energy storage condition of the primary coil according to the voltage output requirement of the transformer T1, so that the actual output voltage of the transformer T1 meets the voltage output requirement, thereby realizing negative feedback control; the PD pin is externally connected with a capacitor C5 and an adjustable resistor R7 which are connected in parallel, and the function of adjusting the switching frequency is achieved.
In addition, the auxiliary winding side of the transformer T1 may be additionally provided with: a resistor R9 for limiting current and a capacitor EC3 for filtering and stabilizing voltage so as to improve the voltage stability of the auxiliary coil side.
As an alternative embodiment, the voltage conversion circuit 300 includes:
the LDO chip U5 with an input end connected with the second voltage output end of the AC/DC conversion circuit 100 and an output end connected with the wireless module is used for performing voltage conversion on the second voltage signal according to a preset output voltage threshold value and supplying the converted voltage signal to the wireless module for use; wherein the second voltage signal is greater than the preset output voltage threshold.
Specifically, the voltage conversion circuit 300 of the present application includes a Low dropout regulator (LDO) chip U5, and its operating principle is:
the input end of the LDO chip U5 is connected with the second voltage output end of the AC/DC conversion circuit 100 so as to input a second voltage signal output by the AC/DC conversion circuit 100, and the output end of the LDO chip U5 is connected with the wireless module so as to supply power to the wireless module after voltage conversion is carried out on the second voltage signal.
Since the output voltage of the LDO chip U5 is a fixed value after being set, the LDO chip U5 performs voltage conversion on the second voltage signal according to a preset output voltage threshold, so as to output a voltage with a voltage value equal to the preset output voltage threshold. It should be noted that the input voltage of the LDO chip U5 needs to be greater than the output voltage, i.e., the second voltage signal > the preset output voltage threshold.
In addition, in order to reduce the loss of the power conversion of LDO chip U5 itself, this application makes the pressure difference between the input voltage of LDO chip U5 and the output voltage as little as possible (the prerequisite is that can satisfy chip output voltage stability), and concrete means of realization do: when designing the secondary winding of transformer T1, the output voltage of pins 7 and 8 of transformer T1, i.e. the input voltage of LDO chip U5, can be reduced by reducing the number of turns of the winding between pins 7 and 8 of transformer T1, so as to reduce the voltage difference between the input voltage and the output voltage of LDO chip U5, thereby reducing the loss of the power conversion itself of LDO chip U5.
It should be noted that, the setting of the output voltage threshold of the LDO chip U5 is different from the auxiliary power circuit in the prior art, and the original auxiliary power circuit is required to output 3.3V to ensure the normal operation of the auxiliary power circuit, but the setting of the output voltage threshold of the LDO chip U5 is not limited to a voltage value, and it is only required that the output voltage of the chip is stable, for example, 2.5V, which is smaller than the output voltage required by the original auxiliary power circuit, i.e., the supply voltage of the wireless module is reduced, and since the current consumed by the wireless module under different supply voltages is the same, the power consumption of the wireless module can be reduced by reducing the supply voltage of the wireless module.
Of course, the voltage converting circuit 300 of the present application may also be a DC-DC voltage converting circuit capable of realizing lower power consumption, and the present application is not limited herein, and is selected according to the comprehensive consideration of power consumption cost.
In addition, as shown in fig. 2, the input and output terminals of the LDO chip U5 may be additionally provided with: a diode D4 for rectification; a capacitor EC7 for stabilizing the input voltage of the LDO chip U5; and the filter circuit consists of a capacitor C17 and a resistor R20 which are connected in parallel and is used for filtering to stabilize the output voltage of the LDO chip U5, so that the input and output stability of the LDO chip U5 is improved.
As an alternative embodiment, the switch circuit 400 includes a first resistor R21, a second resistor R22, a third resistor R35, a first switch transistor Q1, and a second switch transistor Q2; wherein:
a first end of a first resistor R21 is connected to a first end of a first switch tube Q1 and a first voltage output end of the AC/DC conversion circuit 100, a second end of the first switch tube Q1 is connected to a power supply end of the lighting driving circuit 200, a second end of the first resistor R21 is connected to a control end of the first switch tube Q1 and a first end of a second resistor R22, a second end of the second resistor R22 is connected to a first end of the second switch tube Q2, a control end of the second switch tube Q2 is connected to a first end of a third resistor R35, a second end of the third resistor R35 is connected to the wireless module, and a second end of the second switch tube Q2 is grounded;
the wireless module is specifically configured to control the conduction condition of the first switch tube Q1 by controlling the conduction condition of the second switch tube Q2, so that when the lighting fixture is in a standby state, the first switch tube Q1 is controlled to cut off a power supply line of the lighting driving circuit 200, so that the lighting driving circuit 200 stops working.
Specifically, the switching circuit 400 of the present application includes a first resistor R21, a second resistor R22, a third resistor R35, a first switch Q1, and a second switch Q2, and the operating principle of the switching circuit 400 is described by taking an NPN-type triode with the first switch Q1 being a PMOS transistor and the second switch Q2 being a transistor as an example:
the wireless module outputs a driving signal STB for controlling the conduction of the second switch tube Q2. When the driving signal STB outputted by the wireless module is a high level signal, the high level signal is limited by the third resistor R35 and then inputted to the base of the second switch tube Q2, the second switch tube Q2 is turned on, the second end of the second resistor R22 is grounded, the first switch tube Q1 is turned on, and the first voltage signal outputted by the first voltage output end of the AC/DC conversion circuit 100 can be transmitted to the power supply end of the lighting driving circuit 200, so that the lighting driving circuit 200 can work; when the driving signal STB outputted by the wireless module is a low level signal, the second switch Q2 is turned off, and the first switch Q1 is turned off, so as to cut off the power supply line of the lighting driving circuit 200, and stop the lighting driving circuit 200.
Therefore, the wireless module can control the conduction condition of the first switch tube Q1 by controlling the conduction condition of the second switch tube Q2, so that when the lighting fixture is in a standby state, the first switch tube Q1 is controlled to cut off the power supply line of the lighting driving circuit 200, so that the lighting driving circuit 200 stops working, and therefore, the lighting driving circuit 200 does not generate standby power consumption when the lighting fixture is in the standby state, and the wireless module is energy-saving and environment-friendly.
In addition, as shown in fig. 2, the switch circuit 400 may further include a filter circuit composed of a capacitor C22 and a resistor R29 connected in parallel. Between the secondary winding of the transformer T1 and the switching circuit 400, there may be added: a diode D5 for rectification; a capacitor C10 and a resistor R24 which are connected with the diode D5 in parallel and used for protecting the diode D5; the filter circuit is composed of a capacitor EC5 and a resistor R25 which are connected in parallel, so that the power supply stability of the lighting driving circuit 200 is improved.
As an alternative embodiment, the illumination lamp includes a warm light lamp and a cold light lamp;
accordingly, the lighting driving circuit 200 includes:
the warm light driving circuit is respectively connected with the wireless module and the warm light lamp and is used for controlling the warm light lamp to illuminate under the power supply of the first voltage signal and the driving of the wireless module;
and the cold light driving circuit is respectively connected with the wireless module and the cold light lamp and is used for controlling the cold light lamp to illuminate under the power supply of the first voltage signal and under the driving of the wireless module.
Specifically, the illumination lamp of the present application includes a warm light lamp (e.g., a warm light LED lamp) and a cold light lamp (e.g., a cold light LED lamp), and the illumination driving circuit 200 includes a warm light driving circuit and a cold light driving circuit (the specific circuit is shown in fig. 3, the structures of the warm light driving circuit and the cold light driving circuit are the same), and the working principle thereof is:
the warm light driving circuit is powered by a first voltage signal output by a first voltage output end of the AC/DC conversion circuit 100, and after the warm light driving circuit is powered on, a wireless module outputs a PWM (Pulse Width Modulation) signal to drive the warm light driving circuit to control the warm light lamp to illuminate.
Similarly, the cold light driving circuit is powered by the first voltage signal output by the first voltage output terminal of the AC/DC conversion circuit 100, and after the cold light driving circuit is powered on, the wireless module outputs the PWM signal to drive the cold light driving circuit to control the cold light lamp to illuminate.
As an alternative embodiment, the low standby power consumption lighting circuit further comprises:
the input end is connected with the mains supply, and the output end of the mains supply detection circuit is connected with the wireless module and used for detecting a voltage signal of the mains supply and transmitting the detected voltage detection signal to the wireless module, so that the wireless module uploads the voltage detection signal to a terminal which interacts with the wireless module.
Further, the low standby power consumption lighting circuit of this application still includes commercial power detection circuit, and its theory of operation is:
the input end of the mains supply detection circuit is connected with mains supply, can detect the voltage signal of the input mains supply to obtain a voltage detection signal, and transmits the voltage detection signal to the wireless module, so that the wireless module uploads the voltage detection signal to a terminal which is interactive with the wireless module, and a user can check the voltage detection signal.
Referring to fig. 4, fig. 4 is a schematic diagram of a specific structure of a commercial power detection circuit according to an embodiment of the present invention.
As an alternative embodiment, the utility power detection circuit includes a voltage monitoring chip U3, a voltage dividing circuit for reducing the utility power to the allowable range of the input voltage of the voltage monitoring chip U3, a zener diode ZD1, a photocoupler U4 including a light emitting diode and a photocoupler triode, a fourth resistor R16, a fifth resistor R17, a second capacitor C4, and a third capacitor C19; wherein:
a first end of the voltage division circuit is connected with a live wire of a mains supply, a second end of the voltage division circuit is respectively connected with a cathode of a zener diode ZD1 and a VCC end of a voltage monitoring chip U3, an anode of the zener diode ZD1 is respectively connected with a zero line of the mains supply, a GND end of the voltage monitoring chip U3 and a first end of a second capacitor C4, a second end of a second capacitor C4 is respectively connected with a first end of a fourth resistor R16 and an anode of a light emitting diode, a cathode of the light emitting diode is respectively connected with a second end of a fourth resistor R16 and a Reset end of the voltage monitoring chip U3, a collector of an optical coupling triode is respectively connected with a first end of a fifth resistor R17 and a first end of a third capacitor C19, a common end of the optical coupling triode is connected into a wireless module, a second end of the fifth resistor R17 is connected into an output voltage of the voltage conversion circuit 300, and an emitter of the optical coupling triode is connected with a second end;
the voltage monitoring chip U3 is used for controlling the light emitting diode to cut off when the mains voltage reaches a preset voltage monitoring point so as to output a high level signal to the wireless module.
Specifically, the utility power detection circuit of this application includes voltage monitoring chip U3, bleeder circuit, zener diode ZD1, photocoupler U4, fourth resistance R16, fifth resistance R17, second electric capacity C4 and third electric capacity C19 for steady voltage, and its theory of operation is:
as shown in fig. 4, the commercial power detected by the commercial power detection circuit is specifically a commercial power signal filtered by a capacitor CX1 and a common-mode inductor LF 1. The utility power signal is divided by a voltage dividing circuit composed of a resistor R13, a resistor R14 and a resistor R15 and then input to the VCC terminal of the voltage monitoring chip U3, so as to step down the utility power signal to the allowable range of the input voltage of the voltage monitoring chip U3, thereby ensuring the normal operation of the voltage monitoring chip U3.
The voltage monitoring chip U3 monitors a voltage signal which is input by a VCC end of the voltage monitoring chip U3 and represents mains voltage in real time, and when the mains voltage does not reach a preset voltage monitoring point, the voltage monitoring chip U3 controls the conduction of a light emitting diode and an optical coupling triode so as to output a low-level voltage detection signal ADC to the wireless module; when the mains voltage reaches a preset voltage monitoring point, the light emitting diode is controlled to be cut off, and the optical coupling triode is controlled to be cut off so as to output a high-level voltage detection signal ADC to the wireless module.
It should be noted that, on one hand, the wireless module receives signals (such as voltage detection signal ADC) transmitted by the lighting circuit with low standby power consumption, and the purpose is to upload the signals to a terminal interacting with the wireless module, so that a user can view the signals; on the other hand, the system receives signals (such as PWM signals and driving signals STB) transmitted by a terminal interacting with the system, and aims to correspondingly control the operation of the low-standby power consumption lighting circuit based on the signals.
As an alternative embodiment, the wireless module is a bluetooth module.
Specifically, the wireless module of the present application can be selected from, but not limited to, a bluetooth module, and the present application is not limited thereto.
It should be noted that the types and device values of the devices in fig. 2, 3, and 4 are only one selection way of the devices, and other types and other device values can be selected for each device.
The application also provides a lighting lamp, which comprises a lighting lamp and a wireless module, and further comprises any one of the low-standby power consumption lighting circuits.
For introduction of the lighting fixture provided in the present application, please refer to the embodiment of the lighting circuit with low standby power consumption, which is not described herein again.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a low stand-by power consumption lighting circuit which characterized in that is applied to the illumination lamps and lanterns that contain light and wireless module, includes:
the input end of the AC/DC conversion circuit is connected with the mains supply and is used for respectively carrying out different direct-current voltage conversion on the mains supply to obtain a first voltage signal and a second voltage signal;
the illumination driving circuit is respectively connected with the first voltage output end of the AC/DC conversion circuit and the illumination lamp and is used for driving the illumination lamp to illuminate when the illumination driving state is achieved under the power supply of the first voltage signal;
the voltage conversion circuit is respectively connected with the second voltage output end of the AC/DC conversion circuit and the wireless module and is used for performing voltage conversion on the second voltage signal and then supplying power to the wireless module;
the wireless module is used for controlling the switching circuit to cut off the power supply circuit of the lighting driving circuit when the lighting lamp is in a standby state, so that the lighting driving circuit stops working.
2. The low standby power consumption lighting circuit according to claim 1, wherein the AC/DC conversion circuit comprises a rectifying circuit, a transformer including a primary coil and a secondary coil with a tap, a first diode, and an AC/DC chip; wherein:
the input end of the rectifying circuit is connected with a mains supply, the positive output end of the rectifying circuit is respectively connected with the first end of the primary coil and the cathode of the first diode, the negative output end of the rectifying circuit is grounded, the second end of the primary coil is respectively connected with the anode of the first diode and the working power supply end of the AC/DC chip, the first end of the secondary coil outputs the first voltage signal to supply power for the lighting driving circuit, the center tap end of the secondary coil outputs the second voltage signal to supply the voltage conversion circuit for voltage conversion, and the second end of the secondary coil is grounded;
the AC/DC chip is used for controlling the energy storage condition of the primary coil according to the voltage output requirement of the transformer, so that the actual output voltage of the transformer meets the voltage output requirement of the transformer.
3. The low standby power consumption lighting circuit according to claim 2, wherein said transformer further comprises an auxiliary coil for drawing energy from said primary coil; the AC/DC conversion circuit also comprises a second diode, an adjustable resistor and a first capacitor; wherein:
a first end of the auxiliary coil is connected with an anode of the second diode, a second end of the auxiliary coil is grounded, a cathode of the second diode is connected with a first end of the adjustable resistor, a second end of the adjustable resistor is respectively connected with a standby power supply end of the AC/DC chip and a first end of the first capacitor, and a second end of the first capacitor is grounded;
when the lighting lamp is in a normal working state, the AC/DC chip supplies power through a working power supply end of the AC/DC chip; and when the lighting lamp is in a standby state, the lighting lamp is powered by a standby power supply end.
4. The low standby power consumption lighting circuit according to claim 1, wherein the voltage conversion circuit comprises:
the LDO chip is used for performing voltage conversion on the second voltage signal according to a preset output voltage threshold value and supplying the converted voltage signal to the wireless module for use; wherein the second voltage signal is greater than a preset output voltage threshold.
5. The lighting circuit with low standby power consumption as claimed in claim 1, wherein the switching circuit comprises a first resistor, a second resistor, a third resistor, a first switching tube and a second switching tube; wherein:
a first end of the first resistor is connected with a first end of the first switch tube and a first voltage output end of the AC/DC conversion circuit respectively, a second end of the first switch tube is connected with a power supply end of the lighting driving circuit, a second end of the first resistor is connected with a control end of the first switch tube and a first end of the second resistor respectively, a second end of the second resistor is connected with a first end of the second switch tube, a control end of the second switch tube is connected with a first end of the third resistor, a second end of the third resistor is connected with the wireless module, and a second end of the second switch tube is grounded;
the wireless module is specifically used for controlling the conduction condition of the first switch tube by controlling the conduction condition of the second switch tube, so that when the lighting lamp is in a standby state, the first switch tube is controlled to cut off a power supply line of the lighting driving circuit, and the lighting driving circuit stops working.
6. The low standby power consumption lighting circuit according to claim 1, wherein the illumination lamp includes a warm light lamp and a cold light lamp;
correspondingly, the lighting driving circuit comprises:
the warm light driving circuit is respectively connected with the wireless module and the warm light and is used for controlling the warm light to illuminate under the power supply of the first voltage signal and the driving of the wireless module;
and the cold light driving circuit is respectively connected with the wireless module and the cold light lamp and is used for controlling the cold light lamp to illuminate under the power supply of the first voltage signal and the driving of the wireless module.
7. The low standby power consumption lighting circuit according to claim 1, wherein the low standby power consumption lighting circuit further comprises:
the input end is connected with a mains supply, the output end is connected with a mains supply detection circuit connected with the wireless module, and the mains supply detection circuit is used for detecting a voltage signal of the mains supply and transmitting a detected voltage detection signal to the wireless module so that the wireless module uploads the voltage detection signal to a terminal interactive with the wireless module.
8. The lighting circuit with low standby power consumption as claimed in claim 7, wherein the commercial power detection circuit comprises a voltage monitoring chip, a voltage division circuit for reducing the commercial power to an allowable range of the input voltage of the voltage monitoring chip, a zener diode, a photocoupler including a light emitting diode and a photocoupler triode, a fourth resistor, a fifth resistor, a second capacitor and a third capacitor; wherein:
the first end of the voltage division circuit is connected with a live wire of a commercial power, the second end of the voltage division circuit is respectively connected with the cathode of the Zener diode and the VCC end of the voltage monitoring chip, the anode of the Zener diode is respectively connected with the zero line of the commercial power, the GND end of the voltage monitoring chip and the first end of the second capacitor, the second end of the second capacitor is respectively connected with the first end of the fourth resistor and the anode of the light-emitting diode, the cathode of the light emitting diode is respectively connected with the second end of the fourth resistor and the Reset end of the voltage monitoring chip, the collector of the optocoupler triode is respectively connected with the first end of the fifth resistor and the first end of the third capacitor, and the common end of the optocoupler triode is connected with the wireless module, a second end of the fifth resistor is connected to the output voltage of the voltage conversion circuit, and an emitter of the optocoupler triode is connected with a second end of the third capacitor, and a common end of the optocoupler triode is grounded;
the voltage monitoring chip is used for controlling the light emitting diode to be cut off when the mains voltage reaches a preset voltage monitoring point so as to output a high-level signal to the wireless module.
9. The low standby power consumption lighting circuit according to claim 1, wherein the wireless module is a bluetooth module.
10. A lighting fixture comprising a lighting lamp and a wireless module, further comprising a low standby power lighting circuit as claimed in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021310473.9U CN212211460U (en) | 2020-07-07 | 2020-07-07 | Low standby power consumption lighting circuit and lighting lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021310473.9U CN212211460U (en) | 2020-07-07 | 2020-07-07 | Low standby power consumption lighting circuit and lighting lamp |
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| CN212211460U true CN212211460U (en) | 2020-12-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114071829A (en) * | 2021-12-23 | 2022-02-18 | 慕光(广东)智能照明科技有限公司 | LED power supply controller control circuit of intelligence degree of depth adjusting luminance mixing of colors |
| CN114126156A (en) * | 2021-12-07 | 2022-03-01 | 深圳市桑瑞生物科技有限公司 | Control circuit and dimming system of lamp system |
-
2020
- 2020-07-07 CN CN202021310473.9U patent/CN212211460U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114126156A (en) * | 2021-12-07 | 2022-03-01 | 深圳市桑瑞生物科技有限公司 | Control circuit and dimming system of lamp system |
| CN114126156B (en) * | 2021-12-07 | 2023-02-28 | 深圳市桑瑞生物科技有限公司 | Control circuit and dimming system of lamp system |
| CN114071829A (en) * | 2021-12-23 | 2022-02-18 | 慕光(广东)智能照明科技有限公司 | LED power supply controller control circuit of intelligence degree of depth adjusting luminance mixing of colors |
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