High-power LED lamp delay starting circuit

Abstract

The utility model discloses a delay starting circuit for a high-power LED lamp, which relates to the technical field of LED control and comprises a power supply module for supplying power; the delay starting module is used for setting delay starting time and performing delay control on power supply work of the first power supply module; the second power supply module is used for supplying power to the starting control module; the starting control module is used for picking up sound for three times and controlling the first power supply module to supply power when the sound is detected for the third time; the first power supply module is used for transmitting the electric energy output by the power supply module to the LED control module; and the LED control module is used for constant current regulation processing and illumination work. The delay starting circuit of the high-power LED lamp can control the LED control module to carry out constant-current adjustment processing and lighting work in a delay mode, and during the delay starting period, when sound is detected for the third time, lighting work is directly carried out, lighting control means are increased, and the control intelligence degree of the LED lamp is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED control, in particular to a high-power LED lamp delayed starting circuit. Background Art

[0002] With the rapid development of LED, white light LED light sources now have advantages over traditional light sources such as long life, non-destructive solid lighting, high light efficiency, mercury-free, environmentally friendly, and shock-resistant. In order to reduce the inrush current when power is on and ensure stable power access, high-power LED lamps in the existing technology generally use a 555 delayed start circuit, which delays the start of lighting when power is supplied. However, when lighting control is urgently needed, the 555 delayed start circuit needs to be manually turned off, and the control method is relatively cumbersome, so it needs to be improved. Utility Model Content

[0003] The embodiment of the present utility model provides a high-power LED lamp delayed starting circuit to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A high-power LED lamp delayed start circuit, comprising: a power supply module, a delayed start module, a second power supply module, a start control module, a first power supply module and an LED control module;

[0006] a power module, configured to receive AC power, perform voltage reduction, rectification, and filtering on the AC power, and output first power;

[0007] A delayed start module is connected to the power module and is used to set a delayed start time, start the delayed work when receiving the first electric energy, and output a first start signal after the delay ends;

[0008] a second power supply module, connected to the power supply module and the delayed start module, configured to transmit the first electric energy to the start control module and stop the electric energy transmission operation upon receiving the first start signal;

[0009] a start control module connected to the second power supply module, configured to receive the first electric energy transmitted by the second power supply module and perform sound pickup, and when the sound is picked up for the third time, output a second start signal and perform self-locking control on the second start signal;

[0010] a first power supply module, connected to the delayed start module, the start control module and the LED control module, configured to receive the first start signal or the second start signal and transmit the first electrical energy to the LED control module;

[0011] The LED control module is used to perform constant current regulation processing on the first electric energy transmitted by the first power supply module and perform lighting work.

[0012] As a further solution of the utility model: the power supply module includes a mains interface, a first transformer, a first rectifier and a first capacitor; the delayed start module includes a second capacitor, a second resistor, a first diode, a first timer, a third capacitor and a second diode;

[0013] Preferably, the first end and the second end of the AC power interface are respectively connected to the first end and the second end of the primary side of the first transformer, the first end and the second end of the secondary side of the first transformer 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 the first end of the first capacitor, the fourth end and the eighth end of the first timer and connected to one end of the second resistor, the cathode of the first diode, the sixth end and the second end of the first timer through the second capacitor, the fifth end of the first timer is grounded through the third capacitor, the third end of the first timer is connected to the second power supply module and the anode of the second diode, the cathode of the second diode is connected to the first power supply module, the first end of the first timer is connected to the anode of the first diode, the other end of the second resistor, the second end of the first capacitor, the fourth end of the first rectifier and the ground.

[0014] As a further solution of the present invention: the second power supply module includes a first power tube, a first resistor and a first switch tube;

[0015] Preferably, the drain of the first power tube is connected to the first end of the first capacitor and is connected to the gate of the first power tube and the collector of the first switching tube through the first resistor, the emitter of the first switching tube is connected to the second end of the first capacitor, the base of the first switching tube is connected to the third end of the first timer, and the source of the first power tube is connected to the startup control module.

[0016] As a further solution of the present invention: the first power supply module includes a third resistor, a second power tube and a second switch tube;

[0017] Preferably, the gate of the second power tube is connected to the collector of the second switching tube and is connected to the first end of the first capacitor and the source of the second power tube through a third resistor, the drain of the second power tube is connected to the LED control module, the emitter of the second switching tube is grounded, and the base of the second switching tube is connected to the cathode of the second diode and the startup control module.

[0018] As a further solution of the present invention: the startup control module includes an eighth resistor, a sound pickup device, a third switch tube, a ninth resistor, a first counter, a first logic chip, a fourth diode and a fifth diode;

[0019] Preferably, the collector of the third switching tube is connected to the power supply end of the sound pickup device, the sixteenth end of the first counter and the B end of the first logic chip and is connected to the source of the first power tube through the eighth resistor, the output end of the sound pickup device is connected to the base of the third switching tube, the emitter of the third switching tube is connected to the fourteenth end of the first counter and is grounded through the ninth resistor, the ground end of the pickup, the thirteenth end, the fifteenth end and the eighth end of the first counter are all grounded, the A end of the first logic chip is connected to the fourth end of the first counter and the cathode of the fourth diode, the anode of the fourth diode is connected to the anode of the fifth diode and the Y end of the first logic chip, and the cathode of the fifth diode is connected to the base of the second switching tube.

[0020] As a further solution of the present invention: the LED control module includes a fourth resistor, a fourth capacitor, a fifth resistor, a first driver, a sixth resistor, a seventh resistor, a third power tube, an LED module, a first inductor and a third diode;

[0021] Preferably, the VDD end of the first driver is connected to one end of the fourth resistor, the anode of the LED module, the cathode of the third diode and the drain of the second power tube through the fifth resistor, the other end of the fourth resistor is connected to the EN end and the LD end of the first driver and is grounded through the fourth capacitor, the VSS end of the first driver is grounded, the RT end of the first driver is grounded through the sixth resistor, the CS end of the first driver is connected to the source of the third power tube and is grounded through the seventh resistor, the gate of the third power tube is connected to the DR end of the first driver, and the drain of the third power tube is connected to the cathode of the LED module and is connected to the anode of the third diode through the first inductor.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the delayed start circuit of the high-power LED lamp of the present invention can delay the control of the first power supply module to supply power to the LED control module when the power supply module supplies power, and the LED control module performs constant current regulation processing and lighting work. During the delayed start period, the start control module can perform three sound pickup operations, and when the sound is detected for the third time, it will directly control the first power supply module to supply power to the LED control module, control the LED control module to perform lighting work in advance, increase the control means of LED lamp lighting, and after the delayed start is completed, the start control module will not work, avoid consuming electricity, and improve the control intelligence of the high-power LED lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic diagram of the principle of a high-power LED lamp delayed start circuit provided by an example of the utility model.

[0025] Figure 2 This is a circuit diagram of a high-power LED lamp delayed start circuit provided by an example of the utility model.

[0026] Figure 3 This is a connection circuit diagram of the startup control module provided by an example of the present utility model. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0028] In one embodiment, see Figure 1 A high-power LED lamp delayed start circuit includes: a power supply module 1, a delayed start module 2, a second power supply module 3, a start control module 4, a first power supply module 5 and an LED control module 6;

[0029] Specifically, the power module 1 is used to receive AC power, perform voltage reduction, rectification and filtering on the AC power and output the first power;

[0030] The delayed start module 2 is connected to the power supply module 1 and is used to set the delayed start time, start the delayed work when receiving the first electric energy, and output the first start signal after the delay ends;

[0031] The second power supply module 3 is connected to the power supply module 1 and the delayed start module 2, and is used to transmit the first electric energy to the start control module 4, and stop the power transmission work when receiving the first start signal;

[0032] a start control module 4 connected to the second power supply module 3, configured to receive the first electric energy transmitted by the second power supply module 3, and pick up sound; when picking up sound for the third time, output a second start signal and perform self-locking control on the second start signal;

[0033] A first power supply module 5 is connected to the delayed start module 2, the start control module 4 and the LED control module 6, and is used to receive the first start signal or the second start signal and transmit the first power to the LED control module 6;

[0034] The LED control module 6 is used to perform constant current regulation processing on the first electric energy transmitted by the first power supply module 5 and perform lighting work.

[0035] In a specific embodiment, the power supply module 1 can adopt a power supply circuit composed of a mains interface, a transformer, a rectifier and a capacitor, which can be connected to AC power and perform voltage reduction, rectification and filtering on the AC power; the delayed start module 2 can adopt a delayed start circuit composed of a timer, a capacitor, a resistor, etc., which can set the delayed start time and continuously output a high-level state signal after the delayed start time ends; the second power supply module 3 can adopt a second power supply circuit composed of a field-effect transistor, a transistor and a resistor, which can control the transmission state of the electric energy; the start control module 4 can adopt a start control circuit composed of a pickup, a transistor, a counter, a logic chip, etc., which can pick up sound and perform high-level self-locking and output a high-level state signal when the sound is picked up for the third time; the first power supply module 5 can adopt a first power supply circuit composed of a resistor, a field-effect transistor and a transistor, which can control the transmission state of the electric energy; the LED control module 6 can adopt an LED control circuit composed of a constant current driver, a field-effect transistor, an LED module, a resistor, etc., which can adjust the input electric energy to a constant current and then drive the LED module to perform lighting.

[0036] In another embodiment, see Figure 1 、 Figure 2 and Figure 3 The power supply module 1 includes a mains interface, a first transformer B1, a first rectifier T1 and a first capacitor C1; the delayed start module 2 includes a second capacitor C2, a second resistor R2, a first diode D1, a first timer IC1, a third capacitor C3 and a second diode D2;

[0037] Specifically, the first end and the second end of the AC power interface are respectively connected to the first end and the second end of the primary side of the first transformer B1, the first end and the second end of the secondary side of the first transformer B1 are respectively connected to the first end and the second end of the first rectifier T1, the third end of the first rectifier T1 is connected to the first end of the first capacitor C1, the fourth end and the eighth end of the first timer IC1, and is connected to one end of the second resistor R2, the cathode of the first diode D1, the sixth end and the second end of the first timer IC1 through the second capacitor C2, the fifth end of the first timer IC1 is grounded through the third capacitor C3, the third end of the first timer IC1 is connected to the second power supply module 3 and the anode of the second diode D2, the cathode of the second diode D2 is connected to the first power supply module 5, and the first end of the first timer IC1 is connected to the anode of the first diode D1, the other end of the second resistor R2, the second end of the first capacitor C1, the fourth end of the first rectifier T1 and the ground.

[0038] In a specific embodiment, the first timer IC1 may use a NE555 chip, and cooperate with the second capacitor C2, the second resistor R2, the first diode D1, the third capacitor C3 and the second diode D2 to perform delayed start control.

[0039] Furthermore, the second power supply module 3 includes a first power tube Q1, a first resistor R1 and a first switch tube V1;

[0040] Specifically, the drain of the first power tube Q1 is connected to the first end of the first capacitor C1 and is connected to the gate of the first power tube Q1 and the collector of the first switch tube V1 through the first resistor R1. The emitter of the first switch tube V1 is connected to the second end of the first capacitor C1. The base of the first switch tube V1 is connected to the third end of the first timer IC1. The source of the first power tube Q1 is connected to the startup control module 4.

[0041] In a specific embodiment, the first power tube Q1 can be an N-channel field effect tube; and the first switch tube V1 can be an NPN transistor.

[0042] Furthermore, the first power supply module 5 includes a third resistor R3, a second power tube Q2 and a second switch tube V2;

[0043] Specifically, the gate of the second power tube Q2 is connected to the collector of the second switch tube V2 and is connected to the first end of the first capacitor C1 and the source of the second power tube Q2 through the third resistor R3. The drain of the second power tube Q2 is connected to the LED control module 6. The emitter of the second switch tube V2 is grounded. The base of the second switch tube V2 is connected to the cathode of the second diode D2 and the startup control module 4.

[0044] In a specific embodiment, the second power tube Q2 may be a P-channel field effect tube; and the second switch tube V2 may be an NPN transistor.

[0045] Furthermore, the startup control module 4 includes an eighth resistor R8, a sound pickup device, a third switch tube V3, a ninth resistor R9, a first counter IC3, a first logic chip IC4, a fourth diode D4 and a fifth diode D5;

[0046] Specifically, the collector of the third switching tube V3 is connected to the power supply terminal of the sound pickup device, the sixteenth terminal of the first counter IC3, and the B terminal of the first logic chip IC4, and is connected to the source of the first power tube Q1 through the eighth resistor R8. The output terminal of the sound pickup device is connected to the base of the third switching tube V3. The emitter of the third switching tube V3 is connected to the fourteenth terminal of the first counter IC3 and is grounded through the ninth resistor R9. The ground terminal of the sound pickup device and the thirteenth, fifteenth, and eighth terminals of the first counter IC3 are all grounded. The A terminal of the first logic chip IC4 is connected to the fourth terminal of the first counter IC3 and the cathode of the fourth diode D4. The anode of the fourth diode D4 is connected to the anode of the fifth diode D5 and the Y terminal of the first logic chip IC4. The cathode of the fifth diode D5 is connected to the base of the second switching tube V2.

[0047] In a specific embodiment, the sound pickup device may be composed of a sound pickup and an operational amplifier circuit, wherein the sound pickup is used to pick up the sound, and the operational amplifier circuit is used to amplify and filter the signal; the third switch tube V3 may be an NPN transistor; the first counter IC3 may be a CD4017 counter; and the first logic chip IC4 may be an AND gate chip, which cooperates with the fourth diode D4 and the fifth diode D5 to perform high-level self-locking processing.

[0048] Furthermore, the LED control module 6 includes a fourth resistor R4, a fourth capacitor C4, a fifth resistor R5, a first driver IC2, a sixth resistor R6, a seventh resistor R7, a third power tube Q3, an LED module, a first inductor L1 and a third diode D3;

[0049] Specifically, the VDD end of the first driver IC2 is connected to one end of the fourth resistor R4, the anode of the LED module, the cathode of the third diode D3 and the drain of the second power tube Q2 through the fifth resistor R5. The other end of the fourth resistor R4 is connected to the EN end and the LD end of the first driver IC2 and is grounded through the fourth capacitor C4. The VSS end of the first driver IC2 is grounded, the RT end of the first driver IC2 is grounded through the sixth resistor R6, the CS end of the first driver IC2 is connected to the source of the third power tube Q3 and is grounded through the seventh resistor R7, the gate of the third power tube Q3 is connected to the DR end of the first driver IC2, and the drain of the third power tube Q3 is connected to the cathode of the LED module and is connected to the anode of the third diode D3 through the first inductor L1.

[0050] In a specific embodiment, the first driver IC2 may be an APS54083 step-down constant current driver; and the third power tube Q3 may be an N-channel field effect tube.

[0051] In a delayed start circuit for a high-power LED lamp according to this embodiment, AC power is connected to the mains interface, and the first transformer B1, the first rectifier T1, and the first capacitor C1 perform voltage reduction, rectification, and filtering. The first timer IC1 is powered, and the second terminal and the sixth terminal of the first timer IC1 are at a low level. The third terminal of the first timer IC1 outputs a low level, and the second capacitor C2 is charged. The potential of the second terminal and the sixth terminal of the first timer IC1 decreases until the potential of the second terminal of the first timer IC1 is lower than the voltage input to the eighth terminal of the first timer IC1. The third terminal of the first timer IC1 outputs a high level, the delay ends, and the second switch tube V2 and the first switch tube V1 are controlled to be turned on, so that the second power tube Q2 is turned on, and the first power tube Q2 is turned on. The power tube Q1 is turned off, and the first driver IC2 is powered. It cooperates with the fourth resistor R4, the fourth capacitor C4, the fifth resistor R5, the sixth resistor R6, and the seventh resistor R7 to adjust the conduction level of the third power tube Q3, thereby performing constant current regulation to control the LED module to illuminate. During the delayed startup period, since the first power tube Q1 is turned on, the sound pickup device will pick up sound. When sound is picked up, the third switch tube V3 is controlled to turn on. When sound is picked up for the third time, the fourth terminal of the first counter IC3 will output a high level. The first logic chip IC4 cooperates with the fourth diode D4 and the fifth diode D5 to self-lock the high level, thereby triggering the second switch tube V2 to turn on in advance, controlling the second power tube Q2 to turn on, and the LED module to illuminate.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0053] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method 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 can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A high-power LED lamp delayed start circuit, characterized in that: The high-power LED lamp delayed start circuit includes: a power supply module, a delayed start module, a second power supply module, a start control module, a first power supply module and an LED control module; The power module is used to receive AC power, perform voltage reduction, rectification and filtering on the AC power, and output the first power; The delayed start module is connected to the power module, and is used to set the delayed start time, and start the delayed work when receiving the first electric energy, and output the first start signal after the delay ends; The second power supply module is connected to the power supply module and the delayed start module, and is used to transmit the first electric energy to the start control module and stop the electric energy transmission work when receiving the first start signal; The startup control module is connected to the second power supply module, and is used to receive the first power transmitted by the second power supply module and pick up the sound. When the sound is picked up for the third time, the startup control module outputs the second startup signal and performs self-locking control on the second startup signal; The first power supply module is connected to the delayed start module, the start control module and the LED control module, and is used to receive the first start signal or the second start signal and transmit the first power to the LED control module; The LED control module is used to perform constant current regulation processing on the first electric energy transmitted by the first power supply module and perform lighting work.

2. A high-power LED lamp delayed start circuit according to claim 1, characterized in that: The power supply module includes a mains interface, a first transformer, a first rectifier and a first capacitor; the delayed start module includes a second capacitor, a second resistor, a first diode, a first timer, a third capacitor and a second diode; The first end and the second end of the AC power interface are respectively connected to the first end and the second end of the primary side of the first transformer, the first end and the second end of the secondary side of the first transformer 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 the first end of the first capacitor, the fourth end and the eighth end of the first timer, and is connected to one end of the second resistor, the cathode of the first diode, the sixth end and the second end of the first timer through the second capacitor, the fifth end of the first timer is grounded through the third capacitor, the third end of the first timer is connected to the second power supply module and the anode of the second diode, the cathode of the second diode is connected to the first power supply module, the first end of the first timer is connected to the anode of the first diode, the other end of the second resistor, the second end of the first capacitor, the fourth end of the first rectifier and the ground.

3. A high-power LED lamp delayed start circuit according to claim 2, characterized in that: The second power supply module includes a first power tube, a first resistor and a first switch tube; The drain of the first power tube is connected to the first end of the first capacitor and is connected to the gate of the first power tube and the collector of the first switching tube through the first resistor. The emitter of the first switching tube is connected to the second end of the first capacitor. The base of the first switching tube is connected to the third end of the first timer. The source of the first power tube is connected to the startup control module.

4. A high-power LED lamp delayed start circuit according to claim 3, characterized in that: The first power supply module includes a third resistor, a second power tube and a second switch tube; The gate of the second power tube is connected to the collector of the second switching tube and is connected to the first end of the first capacitor and the source of the second power tube through the third resistor. The drain of the second power tube is connected to the LED control module. The emitter of the second switching tube is grounded. The base of the second switching tube is connected to the cathode of the second diode and the startup control module.

5. The high-power LED lamp delayed starting circuit according to claim 4, characterized in that: The startup control module includes an eighth resistor, a sound pickup device, a third switch tube, a ninth resistor, a first counter, a first logic chip, a fourth diode and a fifth diode; The collector of the third switching tube is connected to the power supply terminal of the sound pickup device, the sixteenth terminal of the first counter and the B terminal of the first logic chip, and is connected to the source of the first power tube through the eighth resistor. The output terminal of the sound pickup device is connected to the base of the third switching tube. The emitter of the third switching tube is connected to the fourteenth terminal of the first counter and is grounded through the ninth resistor. The ground terminal of the pickup, the thirteenth terminal, the fifteenth terminal and the eighth terminal of the first counter are all grounded. The A terminal of the first logic chip is connected to the fourth terminal of the first counter and the cathode of the fourth diode. The anode of the fourth diode is connected to the anode of the fifth diode and the Y terminal of the first logic chip. The cathode of the fifth diode is connected to the base of the second switching tube.

6. The high-power LED lamp delayed starting circuit according to claim 4, characterized in that: The LED control module includes a fourth resistor, a fourth capacitor, a fifth resistor, a first driver, a sixth resistor, a seventh resistor, a third power tube, an LED module, a first inductor and a third diode; The VDD end of the first driver is connected to one end of the fourth resistor, the anode of the LED module, the cathode of the third diode and the drain of the second power tube through the fifth resistor. The other end of the fourth resistor is connected to the EN end and the LD end of the first driver and is grounded through the fourth capacitor. The VSS end of the first driver is grounded. The RT end of the first driver is grounded through the sixth resistor. The CS end of the first driver is connected to the source of the third power tube and is grounded through the seventh resistor. The gate of the third power tube is connected to the DR end of the first driver. The drain of the third power tube is connected to the cathode of the LED module and is connected to the anode of the third diode through the first inductor.

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