A kind of energy-saving control circuit and control method of constant-on lamp

Abstract

The present invention discloses an energy-saving control circuit and control method for a constantly lit lamp, and relates to the technical field of energy-saving control for constantly lit lamps, including a power module for power supply; a voltage regulating module for voltage regulation and switch switching and performing voltage alternating regulation; an over-temperature state detection module for over-temperature detection and detecting over-temperature state; an intelligent control module for signal reception and module control; a constant current regulation module for current sampling and constant current regulation and alternately controlling a second LED module and a first LED module for lighting; and an energy-saving control module for storing the residual electric energy voltage of the voltage regulating module and, when fully charged, superimposing power supply with the voltage regulating module. The energy-saving control circuit and control method for a constantly lit lamp of the present invention can perform voltage stabilization and constant current control, and perform voltage alternating regulation and alternating lighting according to the over-temperature state, thereby avoiding energy loss during over-temperature, storing and utilizing the residual electric energy, and improving energy-saving effects.

Description

Technical Field

[0001] The present invention relates to the technical field of energy-saving control of permanent lamps, and in particular to an energy-saving control circuit and a control method for permanent lamps. Background Art

[0002] A constantly-on lamp is a light source that is always on and can generate sufficient light. Since the constantly-on lamps in the prior art need to perform lighting work for a long time, they are generally composed of two groups of LED constantly-on lamps that alternate with each other to avoid overheating of the LED constantly-on lamps due to long-term work. However, when the two groups of LED constantly-on lamps are switched for lighting, the part that drives the LED constantly-on lamps to work still needs to be maintained in a working state, and overheating will occur for a long time, thereby causing energy loss. In addition, when the lighting is switched, there is a certain amount of residual electrical energy in the control circuit that cannot be used in time, further causing energy waste. Therefore, there is room for improvement. Summary of the invention

[0003] The embodiment of the present invention provides a constantly on lamp energy saving control circuit to solve the problems raised in the above background technology.

[0004] According to an embodiment of the present invention, a constant light energy-saving control circuit is provided, comprising: a power supply module, a voltage regulation module, an over-temperature state detection module, an intelligent control module, a first LED module, a second LED module, a constant current regulation module and an energy-saving control module;

[0005] A power module, used for receiving AC power and rectifying and filtering the AC power to output first power;

[0006] A voltage regulating module, connected to the intelligent control module and the power supply module, for receiving the first pulse signal and the first control signal output by the intelligent control module and performing voltage regulation on the input first electric energy, outputting the second electric energy, and performing switch switching and performing voltage regulation on the first electric energy again, outputting the third electric energy, when receiving the second control signal output by the intelligent control module;

[0007] an over-temperature state detection module, connected to the power supply module, for performing voltage stabilization processing on the first electric energy and performing temperature detection, and outputting a third control signal when the detected temperature signal is greater than a set over-temperature threshold, and cyclically outputting a fourth control signal and a fifth control signal in sequence according to the number of times the third control signal is output;

[0008] An intelligent control module, connected to the over-temperature state detection module and the energy-saving control module, used to set the timing time, output the first pulse signal, the first control signal, and the second pulse signal, and when receiving the fourth control signal, output the second control signal and stop outputting the first control signal, and output the first energy storage signal within the timing time, and when receiving the fifth control signal, output the first control signal and stop outputting the second control signal, and output the second energy storage signal within the timing time, and when the electric energy stored in the energy-saving control module reaches the set full-charge threshold, output the first discharge signal;

[0009] A constant current regulation module, connected to the intelligent control module, the first LED module and the second LED module, for sampling the current of the first LED module or the second LED module and, when receiving the second pulse signal, performing constant current driving on the first LED module or the second LED module according to the sampled current signal and outputting a constant current driving signal, outputting a first driving signal when receiving the first control signal, and outputting a second driving signal when receiving the second control signal;

[0010] an energy-saving control module, connected to the voltage regulating module, for storing the residual electric energy voltage of the voltage regulating module when receiving the first energy storage signal or the second energy storage signal, and for superimposing the stored electric energy with the second electric energy or the third electric energy and outputting fourth electric energy when receiving the first discharge signal;

[0011] a first LED module, connected to the voltage regulating module and the energy-saving control module, for receiving the second electric energy, the third electric energy or the fourth electric energy and performing constant current driving on the first LED module when receiving the first driving signal;

[0012] The second LED module is connected to the voltage regulating module and the energy-saving control module, and is used to receive the second electric energy, the third electric energy or the fourth electric energy and perform constant current driving on the second LED module when receiving the second driving signal.

[0013] As a further solution of the present invention: the power module includes a power interface, a first rectifier and a first capacitor; the voltage regulation module includes a first inductor, a second inductor, a first diode, a second diode, a third diode, a third capacitor, a first power tube, a second power tube and a second analog switch; the intelligent control module includes a first controller;

[0014] Preferably, the first end and the second end of the power interface are respectively connected to the first end and the second end of the first rectifier, the third end of the first rectifier is connected to one end of the first capacitor and the first end of the first inductor and is connected to the drain of the second power tube and the anode of the second diode through the second inductor, the second end of the first inductor is connected to the drain of the first power tube and the anode of the first diode, the cathode of the first diode is connected to the cathode of the second diode and the anode of the third diode and is connected to the source of the first power tube, the source of the second power tube, the other end of the first capacitor, the fourth end of the first rectifier and the ground through the third capacitor, the cathode of the third diode is connected to the first LED module and the second LED module, the gate of the first power tube and the gate of the second power tube are respectively connected to the OUT1 end and the OUT2 end of the second analog switch, the IN1 end and the IN2 end of the second analog switch are both connected to the IO6 end of the first controller, and the CTRL1 end and the CTRL2 end of the second analog switch are respectively connected to the IO1 end and the IO2 end of the first controller.

[0015] As a further solution of the present invention: the first LED module includes a first LED module group and a sixth power tube;

[0016] Preferably, the first end of the first LED module is connected to the cathode of the third diode, the second end of the first LED module is connected to the drain of the sixth power tube, and the source and the gate of the sixth power tube are connected to the constant current regulation module.

[0017] As a further solution of the present invention: the second LED module includes a second LED module group and a seventh power tube;

[0018] Preferably, the first end of the second LED module is connected to the cathode of the third diode, the second end of the second LED module is connected to the drain of the seventh power tube, and the source of the seventh power tube and the gate of the seventh power tube are connected to the constant current regulation module.

[0019] As a further solution of the present invention: the constant current regulation module includes a first analog switch, a first resistor, a second resistor and a first amplifier;

[0020] Preferably, the in-phase end of the first amplifier is connected to the IO7 end of the first controller, the inverting end of the first amplifier is connected to the source of the sixth power tube and the source of the seventh power tube and is connected to the fourth end of the first rectifier through the first resistor, the output end of the first amplifier is connected to the IN1 end and the IN2 end of the first analog switch through the second resistor, the CTRL1 end and the CTRL2 end of the first analog switch are respectively connected to the IO1 end and the IO2 end of the first controller, and the OUT1 end and the OUT2 end of the first analog switch are respectively connected to the gate of the sixth power tube and the gate of the seventh power tube.

[0021] As a further solution of the present invention: the energy-saving control module includes a third power tube, a second capacitor, a fourth power tube, a fourth diode, a fifth diode and a fifth power tube;

[0022] Preferably, the drain of the third power tube is connected to the second end of the first inductor, the drain of the fourth power tube is connected to the anode of the second diode, the source of the third power tube is connected to the anode of the fourth diode, the source of the fourth power tube is connected to the anode of the fifth diode, the cathode of the fourth diode is connected to the cathode of the fifth diode and the drain of the fifth power tube and is connected to the cathode of the second diode through the second capacitor, the source of the fifth power tube is connected to the cathode of the third diode, and the gate of the third power tube, the gate of the fourth power tube and the gate of the fifth power tube are respectively connected to the IO3 terminal, IO4 terminal and IO5 terminal of the first controller.

[0023] As a further solution of the present invention: the over-temperature state detection module includes a third resistor, a first voltage regulator tube, a first thermistor, a fourth resistor, a fifth resistor, a sixth resistor, a first comparator, a seventh resistor, a first switch tube, an eighth resistor, a ninth resistor, a first trigger, a self-locking device and a third analog switch;

[0024] Preferably, the cathode of the first voltage regulator is connected to one end of the first thermistor, one end of the fifth resistor, the collector of the first switch tube and one end of the ninth resistor, and is connected to the third end of the first rectifier through the third resistor; the fourth end of the first rectifier is connected to the anode of the first voltage regulator tube, one end of the fourth resistor, one end of the sixth resistor, one end of the eighth resistor and the ground; the other end of the first thermistor is connected to the in-phase end of the first comparator and the other end of the fourth resistor; the inverting end of the first comparator is connected to the other end of the sixth resistor and the other end of the fifth resistor; the output end of the first comparator is connected to the base of the first switch tube through the seventh resistor; the emitter of the first switch tube is connected to the other end of the eighth resistor, the input end of the self-locking device and the CP end of the first trigger; the J end and the K end of the first trigger are both connected to the other end of the ninth resistor; the Q1 end and the Q2 end of the first trigger are respectively connected to the IN1 end and the IN2 end of the third analog switch; the CTRL1 end and the CTRL2 end of the third analog switch are both connected to the output end of the self-locking device; and the OUT1 end and the OUT2 end of the third analog switch are respectively connected to the IO8 end and the IO9 end of the first controller.

[0025] In addition, to achieve the above-mentioned purpose, the present invention further provides a constant light energy-saving control method, the constant light energy-saving control method is applied to the constant light energy-saving control circuit, and the steps of the constant light energy-saving control method include:

[0026] Preferably, the over-temperature state detected by the over-temperature state detection module is acquired in real time;

[0027] Preferably, according to the over-temperature state, the voltage regulating module is controlled to perform switch alternating operation and perform alternating voltage regulation, and according to the over-temperature state, the second LED module and the first LED module are controlled to perform alternating lighting;

[0028] Preferably, according to the switching alternating state of the voltage regulating module, the energy-saving control module is controlled to store the residual electric energy in the voltage regulating module and to supply power to the voltage regulating module in a superimposed manner.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: the energy-saving control circuit and control method of the ever-on lamp of the present invention perform voltage stabilization and constant current control on the first LED module through the voltage regulation module and the constant current regulation module to control the ever-on state of the first LED module, and at the same time, the over-temperature state detection module performs over-temperature detection and when over-temperature occurs, according to the over-temperature state, the intelligent control module controls the voltage regulation module to perform switch switching so that the switch operates alternately, and then performs voltage alternating regulation control to control the second LED module and the first LED module to perform alternating lighting operations to avoid energy loss caused by over-temperature, and at the same time, the energy-saving control module stores the residual electric energy of the voltage regulation module when performing switch switching, and when the stored electric energy is higher than the full-power threshold, cooperates with the voltage regulation module to supply power to achieve energy-saving lighting. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0031] Figure 1 A schematic block diagram of a principle of a constant light energy-saving control circuit provided by an embodiment of the present invention.

[0032] Figure 2 A circuit diagram of a constant-light energy-saving control circuit provided by an embodiment of the present invention.

[0033] Figure 3 A circuit diagram of an over-temperature state detection module provided in an embodiment of the present invention.

[0034] Figure 4 A flowchart of a method for controlling energy saving of a steady-on lamp provided in another embodiment.

[0035] Figure numerals: 1-power supply module, 2-voltage regulation module, 3-over-temperature status detection module, 4-intelligent control module, 5-first LED module, 6-second LED module, 7-constant current regulation module and 8-energy-saving control module. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In one embodiment, see Figure 1 , a constant light energy-saving control circuit, comprising: a power supply module 1, a voltage regulation module 2, an over-temperature state detection module 3, an intelligent control module 4, a first LED module 5, a second LED module 6, a constant current regulation module 7 and an energy-saving control module 8;

[0038] Specifically, the power module 1 is used to receive AC power and perform rectification and filtering on the AC power to output a first power.

[0039] The voltage regulating module 2 is connected to the intelligent control module 4 and the power supply module 1, and is used to receive the first pulse signal and the first control signal output by the intelligent control module 4 and perform voltage regulation on the input first electric energy, and output the second electric energy. When receiving the second control signal output by the intelligent control module 4, the switch is switched and the voltage of the first electric energy is again regulated, and the third electric energy is output;

[0040] an over-temperature state detection module 3, connected to the power supply module 1, for performing voltage stabilization processing on the first electric energy and performing temperature detection, and outputting a third control signal when the detected temperature signal is greater than a set over-temperature threshold, and cyclically outputting a fourth control signal and a fifth control signal in sequence according to the number of times the third control signal is output;

[0041] The intelligent control module 4 is connected to the over-temperature state detection module 3 and the energy-saving control module 8, and is used to set the timing time, output the first pulse signal, the first control signal, and the second pulse signal. When receiving the fourth control signal, the second control signal is output and the first control signal is stopped. During the timing time, the first energy storage signal is output. When receiving the fifth control signal, the first control signal is output and the second control signal is stopped. During the timing time, the second energy storage signal is output, and when the electric energy stored in the energy-saving control module 8 reaches the set full-charge threshold, the first discharge signal is output;

[0042] A constant current regulating module 7, connected to the intelligent control module 4, the first LED module 5 and the second LED module 6, for sampling the current of the first LED module 5 or the second LED module 6 and, when receiving the second pulse signal, performing constant current driving on the first LED module 5 or the second LED module 6 according to the sampled current signal and outputting a constant current driving signal, outputting a first driving signal when receiving the first control signal, and outputting a second driving signal when receiving the second control signal;

[0043] The energy-saving control module 8 is connected to the voltage regulating module 2, and is used to store the residual electric energy voltage of the voltage regulating module 2 when receiving the first energy storage signal or the second energy storage signal, and to superimpose the stored electric energy and the second electric energy or the third electric energy and output the fourth electric energy when receiving the first discharge signal;

[0044] A first LED module 5, connected to the voltage regulating module 2 and the energy-saving control module 8, for receiving the second electric energy, the third electric energy or the fourth electric energy and performing constant current driving on the first LED module when receiving the first driving signal;

[0045] The second LED module 6 is connected to the voltage regulating module 2 and the energy-saving control module 8, and is used to receive the second electric energy, the third electric energy or the fourth electric energy and perform constant current driving on the second LED module when receiving the second driving signal.

[0046] In a specific embodiment, the power supply module 1 can adopt a power supply circuit composed of a power supply interface, a rectifier and a capacitor, can be connected to AC power and perform rectification and filtering on the AC power; the voltage regulation module 2 can adopt a voltage regulation circuit composed of an inductor, a diode, a capacitor, a field effect tube, etc., and can perform voltage alternating regulation through two voltage regulation circuits; the over-temperature state detection module 3 can adopt an over-temperature detection circuit composed of a thermistor, a voltage regulator, a comparator, a trigger, an analog switch, etc., can perform voltage stabilization, temperature detection and over-temperature judgment, and when over-temperature, provide a high-level signal to the intelligent control module 4 according to the over-temperature state, that is, when the temperature is over-temperature for the first time, a fourth control signal is provided, when the temperature is over-temperature for the second time, a fifth control signal is provided, and when the temperature is over-temperature for the third time, a fourth control signal is provided, so as to cyclically control the output of the fourth control signal and the fifth control signal; the intelligent control module 4 can adopt an intelligent control circuit composed of a single-chip microcomputer and a clock chip, which integrates many components such as an arithmetic unit, a controller, a memory, and an input and output device to realize signal processing, data storage, module control, timing control and other functions, and can cooperate with the output power voltage of the voltage regulation module and the output power of the energy-saving control module. The voltage regulation control of the voltage regulation module, the discharge control of the energy-saving control module and the constant current regulation control of the constant current regulation module are completed by the current signal sampled by the voltage and constant current regulation module. Specifically, the voltage sampling can be completed by a voltage divider circuit, which will not be described in detail here; the first LED module 5 can adopt a first LED circuit composed of a first LED module and a field effect tube, which can be used for lighting control; the second LED module 6 can adopt a second LED circuit composed of a second LED module and a field effect tube, which can be used for lighting control; the constant current regulation module 7 can adopt a constant current regulation circuit composed of an amplifier, an analog switch, a resistor, etc., which can sample the current of the first LED module 5 or the second LED module 6, and according to the sampled current signal and the second pulse signal, the first control signal and the second control signal provided by the intelligent control module 4, the first LED module 5 and the second LED module 6 are alternately driven with a constant current; the energy-saving control module 8 can adopt an energy-saving control circuit composed of an energy storage capacitor, a diode and a field effect tube, which can store the residual electric energy when the voltage regulation module 2 is switched, and when the stored electric energy is greater than the full power threshold, it performs electric energy superposition processing with the voltage regulation module 2.

[0047] In another embodiment, see Figure 1 , Figure 2 and Figure 3 The power module 1 includes a power interface, a first rectifier T1 and a first capacitor C1; the voltage regulation module 2 includes a first inductor L1, a second inductor L2, a first diode D1, a second diode D2, a third diode D3, a third capacitor C3, a first power tube Q1, a second power tube Q2 and a second analog switch J2; the intelligent control module 4 includes a first controller U1;

[0048] Specifically, the first end and the second end of the power interface are connected to the first end and the second end of the first rectifier T1 respectively, the third end of the first rectifier T1 is connected to one end of the first capacitor C1 and the first end of the first inductor L1 and is connected to the drain of the second power tube Q2 and the anode of the second diode D2 through the second inductor L2, the second end of the first inductor L1 is connected to the drain of the first power tube Q1 and the anode of the first diode D1, the cathode of the first diode D1 is connected to the cathode of the second diode D2 and the anode of the third diode D3 and is connected to the source of the first power tube Q1 through the third capacitor C3, The source of the second power tube Q2, the other end of the first capacitor C1, the fourth end of the first rectifier T1 and the ground end, and the cathode of the third diode D3 are connected to the first LED module 5 and the second LED module 6, the gate of the first power tube Q1 and the gate of the second power tube Q2 are respectively connected to the OUT1 end and the OUT2 end of the second analog switch J2, the IN1 end and the IN2 end of the second analog switch J2 are both connected to the IO6 end of the first controller U1, and the CTRL1 end and the CTRL2 end of the second analog switch J2 are respectively connected to the IO1 end and the IO2 end of the first controller U1.

[0049] In a specific embodiment, both the first power tube Q1 and the second power tube Q2 can be N-channel field effect tubes, wherein the first power tube Q1 cooperates with the first inductor L1 and the first diode D1 to perform voltage regulation, and the second power tube Q2 cooperates with the second inductor L2 and the second diode D2 to perform voltage regulation; the second analog switch J2 can use a CD4066 chip; the first controller U1 can be composed of an STM32 microcontroller and a clock chip, wherein the clock chip provides a clock signal for the STM32 microcontroller so that the STM32 microcontroller can perform timing work.

[0050] Furthermore, the first LED module 5 includes a first LED module group and a sixth power tube Q6;

[0051] Specifically, the first end of the first LED module is connected to the cathode of the third diode D3 , the second end of the first LED module is connected to the drain of the sixth power tube Q6 , and the source and gate of the sixth power tube Q6 are connected to the constant current regulation module 7 .

[0052] In a specific embodiment, the sixth power tube Q6 can be an N-channel field effect tube; the first LED module is composed of a plurality of LED groups.

[0053] Further, the second LED module 6 includes a second LED module group and a seventh power tube Q7;

[0054] Specifically, the first end of the second LED module is connected to the cathode of the third diode D3, the second end of the second LED module is connected to the drain of the seventh power tube Q7, and the source and gate of the seventh power tube Q7 are connected to the constant current regulation module 7.

[0055] In a specific embodiment, the seventh power tube Q7 can be an N-channel field effect tube; the second LED module is composed of a plurality of LED groups.

[0056] Furthermore, the constant current regulation module 7 includes a first analog switch J1, a first resistor R1, a second resistor R2 and a first amplifier AD1;

[0057] Specifically, the in-phase end of the first amplifier AD1 is connected to the IO7 end of the first controller U1, the inverting end of the first amplifier AD1 is connected to the source of the sixth power tube Q6 and the source of the seventh power tube Q7 and is connected to the fourth end of the first rectifier T1 through the first resistor R1, the output end of the first amplifier AD1 is connected to the IN1 end and the IN2 end of the first analog switch J1 through the second resistor R2, the CTRL1 end and the CTRL2 end of the first analog switch J1 are respectively connected to the IO1 end and the IO2 end of the first controller U1, and the OUT1 end and the OUT2 end of the first analog switch J1 are respectively connected to the gate of the sixth power tube Q6 and the gate of the seventh power tube Q7.

[0058] In a specific embodiment, the first amplifier AD1 may be an ADA4097-1 operational amplifier; the first resistor R1 performs current sampling; and the first analog switch J1 may be a CD4066 chip.

[0059] Further, the energy-saving control module 8 includes a third power tube Q3, a second capacitor C2, a fourth power tube Q4, a fourth diode D4, a fifth diode D5 and a fifth power tube Q5;

[0060] Specifically, the drain of the third power tube Q3 is connected to the second end of the first inductor L1, the drain of the fourth power tube Q4 is connected to the anode of the second diode D2, the source of the third power tube Q3 is connected to the anode of the fourth diode D4, the source of the fourth power tube Q4 is connected to the anode of the fifth diode D5, the cathode of the fourth diode D4 is connected to the cathode of the fifth diode D5 and the drain of the fifth power tube Q5 and is connected to the cathode of the second diode D2 through the second capacitor C2, the source of the fifth power tube Q5 is connected to the cathode of the third diode D3, and the gate of the third power tube Q3, the gate of the fourth power tube Q4 and the gate of the fifth power tube Q5 are respectively connected to the IO3 terminal, the IO4 terminal and the IO5 terminal of the first controller U1.

[0061] In a specific embodiment, the third power tube Q3, the fourth power tube Q4 and the fifth power tube Q5 can all be N-channel field effect tubes, wherein the third power tube Q3 cooperates with the fourth diode D4 to transmit the residual electric energy on the first inductor L1, the fourth power tube Q4 cooperates with the fifth diode D5 to transmit the residual electric energy on the second inductor L2, and the fifth power tube Q5 performs discharge control; the second capacitor C2 can be a storage capacitor.

[0062] Furthermore, the over-temperature state detection module 3 includes a third resistor R3, a first voltage regulator tube VD1, a first thermistor NTC1, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a first comparator A1, a seventh resistor R7, a first switch tube V1, an eighth resistor R8, a ninth resistor R9, a first trigger U2, a self-locking device and a third analog switch J3;

[0063] Specifically, the cathode of the first voltage regulator tube VD1 is connected to one end of the first thermistor NTC1, one end of the fifth resistor R5, the collector of the first switch tube V1 and one end of the ninth resistor R9, and is connected to the third end of the first rectifier T1 through the third resistor R3. The fourth end of the first rectifier T1 is connected to the anode of the first voltage regulator tube VD1, one end of the fourth resistor R4, one end of the sixth resistor R6, one end of the eighth resistor R8 and the ground. The other end of the first thermistor NTC1 is connected to the in-phase end of the first comparator A1 and the other end of the fourth resistor R4. The inverting end of the first comparator A1 is connected to the other end of the sixth resistor R6 and the other end of the fifth resistor R5. The output end of the first comparator A1 is connected to the base of the first switch tube V1 through the seventh resistor R7, the emitter of the first switch tube V1 is connected to the other end of the eighth resistor R8, the input end of the self-locking device and the CP end of the first trigger U2, the J end and the K end of the first trigger U2 are both connected to the other end of the ninth resistor R9, the Q1 end and the Q2 end of the first trigger U2 are respectively connected to the IN1 end and the IN2 end of the third analog switch J3, the CTRL1 end and the CTRL2 end of the third analog switch J3 are both connected to the output end of the self-locking device, and the OUT1 end and the OUT2 end of the third analog switch J3 are respectively connected to the IO8 end and the IO9 end of the first controller U1.

[0064] In a specific embodiment, the first thermistor NTC1 can be a negative temperature coefficient thermistor; the third resistor R3 and the first voltage regulator VD1 are used for voltage stabilization; the fifth resistor R5 and the sixth resistor R6 set the over-temperature threshold; the first comparator A1 can be an LM358 comparator; the first switch tube V1 can be an NPN transistor; the first trigger U2 can be a JK trigger, and before the JK trigger starts working, the Q1 terminal of the JK trigger provides a low level and the Q2 terminal provides a high level; the self-locking device can be composed of a transistor and a resistor, and performs self-locking processing on the input high-level state signal; the third analog switch J3 can be a CD4066 chip.

[0065] Another embodiment provides a method for controlling energy saving of a constant light, which is executed by the intelligent control module 4 in the constant light energy saving control circuit provided in the above embodiment. Figure 4 , the method includes the following contents.

[0066] Step S100, obtaining the over-temperature state detected by the over-temperature state detection module 3 in real time;

[0067] Step S200, according to the over-temperature state, controlling the voltage regulating module 2 to perform switch alternating operation and perform alternating voltage regulation, and according to the over-temperature state, controlling the second LED module 6 and the first LED module 5 to perform alternating lighting;

[0068] Step S300 , according to the switching alternating state of the voltage regulating module 2 , the energy-saving control module 8 is controlled to store the residual electric energy in the voltage regulating module 2 and to provide power to the voltage regulating module 2 in a superimposed manner.

[0069] In a specific embodiment, the above-mentioned over-temperature state is determined by the number of over-temperature times detected by the over-temperature state detection module 3, that is, when over-temperature occurs for the first time, the voltage regulation module 2 is controlled to perform alternating switch operation and alternate voltage regulation and control the second LED module 6 to replace the first LED module 5 for lighting. When over-temperature occurs for the second time, the voltage regulation module 2 is controlled again to perform alternating switch operation and alternate voltage regulation and control the first LED module 5 to replace the second LED module 6 for lighting.

[0070] In a constantly on lamp energy-saving control circuit of the present embodiment, AC power is connected by a power interface, the first rectifier T1 and the first capacitor C1 perform rectification and filtering processing, the IO1 terminal of the first controller U1 outputs a first control signal to control the IN1 terminal and OUT1 terminal of the first analog switch J1 to be turned on, and the IN1 terminal and OUT1 terminal of the second analog switch J2 to be turned on, so that the first pulse signal provided by the IO6 terminal of the first analog switch J1 drives the conduction state of the first power tube Q1, the second pulse signal output by the IO7 terminal of the first controller U1 controls the first amplifier AD1 to work, and the first amplifier AD1 cooperates with the current signal sampled by the first resistor R1 to output a constant current drive signal, and the constant current drive signal is transmitted through the second analog switch J2 and outputs the first power tube Q1. A driving signal drives the sixth power tube Q6 to turn on, and then provides a constant voltage and current electric energy for the first LED module, controls the first LED module to be always on, and at the same time, the third resistor R3 and the first voltage regulator VD1 perform voltage stabilization, the first thermistor NTC1 and the fourth resistor R4 perform temperature detection, when the detected temperature is greater than the over-temperature threshold value set by the fifth resistor R5 and the sixth resistor R6, the first comparator A1 outputs a high-level state signal, controls the first switch tube V1 to turn on, and then provides a third control signal to the CP end of the first trigger U2, so that the Q1 end and the Q2 end of the first trigger U2 are flipped, because the Q1 end outputs a low level and the Q2 end outputs a high level before the first trigger U2 is flipped, so that the self-locking device triggers the third After the analog switch J3 is turned on, the first trigger U2 flips over, and the signal output from the Q1 terminal becomes a signal in a high level state, i.e., the fourth control signal, and is received by the IO8 terminal of the first controller U1, so that the IO2 terminal of the first controller U1 outputs the second control signal, the IN2 terminal and the OUT2 terminal of the first analog switch J1 are turned on, the IN2 terminal and the OUT2 terminal of the second analog switch J2 are turned on, the IO6 terminal of the first controller U1 drives the second power tube Q2 to turn on, cooperates with the second inductor L2 and the second diode D2 to adjust the voltage, the first amplifier AD1 drives the seventh power tube Q7 to turn on, and the second LED module performs lighting work. At this time, the temperature will drop, thereby improving the working efficiency of the circuit. At the same time, the IO3 terminal of the first controller U1 will output the first control signal at a fixed time. An energy storage signal is used to control the third power tube Q3 to turn on, and the residual electric energy on the first inductor L1 is transmitted to the second capacitor C2, which is stored by the second capacitor C2. When overtemperature is detected again, the CP terminal of the first trigger U2 receives the third control signal again, and the first trigger U2 is flipped again, so that the Q1 terminal outputs a signal in a low-level state, and the Q2 terminal outputs a signal in a high-level state, that is, the fifth control signal, which is received by the IO9 terminal of the first controller U1. The IO4 terminal of the first controller U1 will output the second energy storage signal at a fixed time, and control the fourth power tube Q4 to turn on, so that the residual electric energy on the second inductor L2 is transmitted to the second electric energy storage, and this cycle is repeated, and then the voltage is controlled to be adjusted alternately, and the first LED module and the second LED module are illuminated alternately.When the electric energy stored in the second capacitor C2 is greater than the full-charge threshold, the IO5 terminal of the first controller U1 will output a discharge signal to control the fifth power tube Q5 to be turned on, and the electric energy stored in the second capacitor C2 is superimposed with the third electric energy or the fourth electric energy provided by the voltage regulating module 2, and then the first LED module or the second LED module is powered.

[0071] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0072] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A constant light energy-saving control circuit, characterized in that: The energy-saving control circuit of the constant-on lamp comprises: a power supply module, a voltage regulation module, an over-temperature state detection module, an intelligent control module, a first LED module, a second LED module, a constant current regulation module and an energy-saving control module; The power module is used to receive AC power and process the power to output the first power; The over-temperature state detection module is connected to the power supply module, and is used for temperature detection and outputting the fourth control signal and the fifth control signal in sequence and in a cycle according to the number of times the detected temperature signal is greater than the set over-temperature threshold; The intelligent control module is connected to the voltage regulation module, the over-temperature state detection module, the constant current drive module and the energy-saving control module, and is used to set the timing time, control the voltage regulation module to perform voltage alternating regulation, and control the driving state of the constant current drive module when receiving the fourth control signal or the fifth control signal, and control the energy-saving control module to store energy within the timing time and output a first discharge signal when the stored electric energy reaches a set full-charge threshold; The voltage regulating module is connected to the power module and is used to regulate the voltage of the first electric energy, perform switch switching and regulate the voltage of the first electric energy again; The constant current regulation module is connected to the first LED module and the second LED module, and is used to perform current sampling on the first LED module or the second LED module and perform constant current driving on the second LED module when the intelligent control module receives the fourth control signal, and perform constant current driving on the first LED module when the intelligent control module receives the fifth control signal; The energy-saving control module is connected to the voltage regulating module and is used to store the residual electric energy of the voltage regulating module and to superimpose the stored electric energy with the electric energy output by the voltage regulating module when receiving the first discharge signal; The first LED module is connected to the energy-saving control module and the voltage regulating module, and is used for receiving electric energy and performing lighting work; The second LED module is connected to the energy-saving control module and the voltage regulating module, and is used for receiving electric energy and performing lighting work.

2. The energy-saving control circuit for a constant-on lamp according to claim 1, characterized in that: The power supply module includes a power supply interface, a first rectifier and a first capacitor; the voltage regulation module includes a first inductor, a second inductor, a first diode, a second diode, a third diode, a third capacitor, a first power tube, a second power tube and a second analog switch; the intelligent control module includes a first controller; The first end and the second end of the power interface are connected to the first end and the second end of the first rectifier respectively, the third end of the first rectifier is connected to one end of the first capacitor and the first end of the first inductor and is connected to the drain of the second power tube and the anode of the second diode through the second inductor, the second end of the first inductor is connected to the drain of the first power tube and the anode of the first diode, the cathode of the first diode is connected to the cathode of the second diode and the anode of the third diode and is connected to the source of the first power tube, the source of the second power tube, the other end of the first capacitor, the fourth end of the first rectifier and the ground through the third capacitor, the cathode of the third diode is connected to the first LED module and the second LED module, the gate of the first power tube and the gate of the second power tube are connected to the OUT1 end and the OUT2 end of the second analog switch respectively, the IN1 end and the IN2 end of the second analog switch are both connected to the IO6 end of the first controller, and the CTRL1 end and the CTRL2 end of the second analog switch are respectively connected to the IO1 end and the IO2 end of the first controller.

3. The energy-saving control circuit for a constant-on lamp according to claim 2, characterized in that: The first LED module includes a first LED module and a sixth power tube; The first end of the first LED module is connected to the cathode of the third diode, the second end of the first LED module is connected to the drain of the sixth power tube, and the source and the gate of the sixth power tube are connected to the constant current regulation module.

4. The energy-saving control circuit for a constant-on lamp according to claim 3, characterized in that: The second LED module includes a second LED module and a seventh power tube; The first end of the second LED module is connected to the cathode of the third diode, the second end of the second LED module is connected to the drain of the seventh power tube, and the source of the seventh power tube and the gate of the seventh power tube are connected to the constant current regulation module.

5. A constant light energy-saving control circuit according to claim 4, characterized in that: The constant current regulation module includes a first analog switch, a first resistor, a second resistor and a first amplifier; The in-phase end of the first amplifier is connected to the IO7 end of the first controller, the inverting end of the first amplifier is connected to the source of the sixth power tube and the source of the seventh power tube and is connected to the fourth end of the first rectifier through the first resistor, the output end of the first amplifier is connected to the IN1 end and the IN2 end of the first analog switch through the second resistor, the CTRL1 end and the CTRL2 end of the first analog switch are respectively connected to the IO1 end and the IO2 end of the first controller, and the OUT1 end and the OUT2 end of the first analog switch are respectively connected to the gate of the sixth power tube and the gate of the seventh power tube.

6. A constant light energy-saving control circuit according to claim 5, characterized in that: The energy-saving control module includes a third power tube, a second capacitor, a fourth power tube, a fourth diode, a fifth diode and a fifth power tube; The drain of the third power tube is connected to the second end of the first inductor, the drain of the fourth power tube is connected to the anode of the second diode, the source of the third power tube is connected to the anode of the fourth diode, the source of the fourth power tube is connected to the anode of the fifth diode, the cathode of the fourth diode is connected to the cathode of the fifth diode and the drain of the fifth power tube and is connected to the cathode of the second diode through the second capacitor, the source of the fifth power tube is connected to the cathode of the third diode, and the gates of the third power tube, the fourth power tube and the fifth power tube are respectively connected to the IO3 terminal, the IO4 terminal and the IO5 terminal of the first controller.

7. The energy-saving control circuit for a constant-on lamp according to claim 6, characterized in that: The over-temperature state detection module includes a third resistor, a first voltage regulator tube, a first thermistor, a fourth resistor, a fifth resistor, a sixth resistor, a first comparator, a seventh resistor, a first switch tube, an eighth resistor, a ninth resistor, a first trigger, a self-locking device and a third analog switch; The cathode of the first voltage regulator is connected to one end of the first thermistor, one end of the fifth resistor, the collector of the first switch tube and one end of the ninth resistor, and is connected to the third end of the first rectifier through the third resistor. The fourth end of the first rectifier is connected to the anode of the first voltage regulator, one end of the fourth resistor, one end of the sixth resistor, one end of the eighth resistor and the ground. The other end of the first thermistor is connected to the in-phase end of the first comparator and the other end of the fourth resistor. The inverting end of the first comparator is connected to the other end of the sixth resistor and the other end of the fifth resistor. The output end of the first comparator is connected to the base of the first switch tube through the seventh resistor. The emitter of the first switch tube is connected to the other end of the eighth resistor, the input end of the self-locking device and the CP end of the first trigger. The J end and the K end of the first trigger are both connected to the other end of the ninth resistor. The Q1 end and the Q2 end of the first trigger are respectively connected to the IN1 end and the IN2 end of the third analog switch. The CTRL1 end and the CTRL2 end of the third analog switch are both connected to the output end of the self-locking device. The OUT1 end and the OUT2 end of the third analog switch are respectively connected to the IO8 end and the IO9 end of the first controller.

8. A method for controlling energy saving of a constant-on lamp, characterized in that: The energy-saving control method for a constant-on lamp is applied to the energy-saving control circuit for a constant-on lamp according to claim 1, and the steps of the energy-saving control method for a constant-on lamp include: Obtain the over-temperature status detected by the over-temperature status detection module in real time; According to the over-temperature state, the voltage regulating module is controlled to perform switch alternating operation and perform alternating voltage regulation, and according to the over-temperature state, the second LED module and the first LED module are controlled to perform alternating lighting; According to the switching alternating state of the voltage regulating module, the energy-saving control module is controlled to store the residual electric energy in the voltage regulating module and to supply power to the voltage regulating module in a superimposed manner.

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