WO2024017066A1

WO2024017066A1 - Led modular intelligent driving circuit

Info

Publication number: WO2024017066A1
Application number: PCT/CN2023/106041
Authority: WO
Inventors: 武良举; 梁锦源
Original assignee: 佛山市威得士智能照明科技有限公司
Priority date: 2022-07-19
Filing date: 2023-07-06
Publication date: 2024-01-25
Also published as: CN218277221U

Abstract

The present utility model relates to the technical field of LED driving control, and in particular to an LED modular driving circuit. The LED modular driving circuit comprises a circuit mainboard and a microwave induction module, wherein the circuit mainboard bears a main body circuit of the LED modular driving circuit so as to realize the modular design of the LED modular driving circuit; the circuit mainboard is provided with a transmission interface; and the microwave induction module is electrically connected to the main body circuit of the LED modular driving circuit in a state whereby the microwave induction module is electrically connected to the transmission interface in a pluggable manner, such that corresponding circuit connection is simply and easily realized, thereby facilitating the simplification of the circuit design of the LED modular driving circuit.

Description

LED modular intelligent drive circuit

Technical field

The utility model relates to the technical field of LED drive control, and in particular to an LED modular drive circuit.

Background technique

In the context of green development, energy conservation and emission reduction, the energy consumption of various items has become one of the important factors considered by consumers. Among them, lamps are indispensable items for modern people, and their environmental performance has attracted much attention. Compared with LED lamps, Traditional lighting fixtures have the characteristics of green, environmental protection and energy saving, which are in line with the development background of today's era. With the continuous improvement of people's living standards, quality requirements and LED lighting industry technology, the appearance, style and use functions of LED lighting fixtures have also been improved. The corresponding iterative upgrades started with the most basic energy-saving lighting, then transitioned to thyristor dimming lighting, and now the emerging smart lighting on the market. The rich styles and functions of LED lamps are favored by consumers.

Unlike traditional lighting fixtures, LED lamp beads cannot be directly connected to the AC mains power grid. Instead, they must first convert the AC mains power into DC power through a drive circuit and then drive it. Therefore, LED lamps mainly include LED lamp beads and a driving part that matches the lamp beads. At present, most wirelessly controlled lighting fixtures use isolated power circuit technology, especially flyback switching power supplies, which mainly include rectifier circuits, power stage circuits and control circuits. These power stage circuits mainly contain switching tubes, such as triodes. First, the rectifier circuit receives AC mains power, and after passing through the rectifier circuit, it enters the power stage circuit. The power stage circuit performs voltage conversion. The control circuit is used to control the on and off of the main power switch tube in the power stage circuit, thereby achieving constant current driving of the LED. , however, the design of this type of driving power supply circuit is complex and the manufacturing cost is high, so it is difficult to reduce the price of corresponding lamp products.

In recent years, with the development of Internet of Things technology, the demand for intelligent lighting technology has become more and more widespread, that is, intelligently controlling the operation of lamps based on the detection results of the presence or absence of the human body, thereby realizing intelligent self-control of lamps and meeting intelligent needs. Technology In the prior art, a detection device is usually connected in parallel in the drive circuit, so that the detection device is used as an intelligent switch of the lamp in the drive circuit, thereby setting the detection device to control the drive circuit of the lamp based on the corresponding detection results. state. It is understandable that due to the complexity of the existing drive power circuit design, further setting up a detection device will inevitably increase the complexity of the circuit design, resulting in As a result, the cost of existing smart lamps is relatively high, which has affected the popularity of smart lamps to a certain extent.

Utility model content

One purpose of the present utility model is to provide an LED modular intelligent drive circuit, wherein the LED modular intelligent drive circuit can perform presence detection based on the microwave detection technology based on the Doppler effect principle, so as to realize intelligent self-operation based on the corresponding detection results. control.

An object of the present invention is to provide an LED modular intelligent drive circuit, wherein the circuit design of the LED modular intelligent drive circuit is simple, and the circuit design and production costs are controllable.

One purpose of the present utility model is to provide an LED modular intelligent drive circuit, wherein the LED modular intelligent drive circuit adopts a dual-channel parallel power supply scheme of high-voltage constant current power supply and low-voltage constant current power supply to ensure the driving of LED lamp beads. Stability and power supply stability of the corresponding microwave detection module, thus having excellent stability in actual use.

One object of the present invention is to provide an LED modular intelligent drive circuit, wherein the LED modular intelligent drive circuit includes a circuit mainboard and a microwave induction module, wherein the circuit mainboard has a transmission interface, and the microwave induction module is pluggably and electrically connected to the transmission interface, wherein the circuit mainboard carries a rectifier filter circuit, a lighting drive circuit and a microwave power supply and control circuit, wherein the rectifier filter circuit is disposed at its input terminal The state of the incoming alternating current is based on the rectification and filtering process of the incoming alternating current and outputs direct current at its output end, wherein the input end of the lighting drive circuit is electrically connected to the output end of the rectification and filtering circuit to access from the The electric energy output by the output end of the rectifier filter circuit drives at least one luminous load electrically connected to its output end, wherein the input end of the microwave power supply and control circuit is electrically connected to the output end of the rectifier filter circuit, To access the direct current output from the rectifier and filter circuit and perform voltage reduction processing, the microwave power supply and control circuit is electrically connected to the transmission interface, and the microwave induction module is disposed where the transmission interface is The state of the microwave power supply and control circuit detects object activity to generate a control signal based on the detection result of the object activity, wherein the microwave power supply and control circuit is connected to the control signal and controls the lighting according to the control signal. The electric energy output of the driving circuit is controlled, so as to control the intelligent application effect of the lamp based on the corresponding object activity.

One object of the present invention is to provide an LED modular intelligent drive circuit, in which the rectifier filter circuit, the lighting drive circuit and the microwave power supply and control circuit are carried on the circuit mainboard, and the microwave induction module is pluggably and electrically connected to the transmission interface of the circuit mainboard, In this way, the circuit layout of the LED modular intelligent driving circuit is realized, thereby simplifying the circuit.

An object of the present invention is to provide an LED modular intelligent drive circuit, wherein the lighting drive circuit includes a linear drive circuit and a ripple elimination circuit, wherein the input end of the linear drive circuit is electrically connected to the The output end of the rectifier filter circuit is used to access the electric energy output from the rectifier filter circuit and control the electric energy output from the rectifier filter circuit, wherein the ripple elimination circuit is provided at the output end of the lighting drive circuit. , ensuring the stability of the output voltage of the linear drive circuit based on ripple elimination of the voltage output from the lighting drive circuit, so that the lighting drive circuit can stably drive the luminous load, thereby ensuring that all The performance stability of the LED modular intelligent drive circuit is described, giving users a good experience.

One object of the present invention is to provide an LED modular intelligent drive circuit, in which the lighting drive circuit is configured to adopt a non-isolated DC-DC circuit. Therefore, compared with the existing drive circuit, the circuit is simple and the number of components is small. , and can ensure that the corresponding light-emitting load at its output end will not have adverse phenomena such as light flickering, respiratory flickering, or failure to start, giving users a good experience.

According to one aspect of the present invention, the present invention provides an LED modular intelligent driving circuit, wherein the LED modular intelligent driving circuit includes:

a microwave induction module;

A circuit mainboard, wherein the circuit mainboard has a transmission interface, wherein the microwave induction module is pluggably and electrically connected to the transmission interface, wherein the circuit mainboard carries a rectifier filter circuit, a lighting drive circuit and A microwave power supply and control circuit, wherein the rectification and filtering circuit is configured to output direct current at its output end based on the rectification and filtering process of the accessed alternating current when the input end of the circuit is connected to alternating current; wherein the input end of the lighting drive circuit is electrically connected to the output end of the rectifier filter circuit to access the electric energy output from the output end of the rectifier filter circuit to drive at least one luminous load electrically connected to the output end thereof; wherein the microwave power supply The microwave power supply and control circuit is electrically connected to the transmission interface, and the input end of the microwave power supply and control circuit is electrically connected to the output end of the rectifier filter circuit to receive the DC power output by the rectifier filter circuit and conduct step-down processing, thereby outputting the step-down processed direct current to the transmission interface, wherein the microwave induction module is configured to detect object activity in a state where the transmission interface is powered by the microwave power supply and control circuit, so as to detect object activity The detection result of the activity generates a control signal, wherein the microwave power supply and control circuit is connected to the control signal and controls the power output of the lighting driving circuit according to the control signal.

In one embodiment, the lighting driving circuit includes a linear driving circuit and a ripple elimination circuit. circuit, wherein the input end of the linear drive circuit is electrically connected to the output end of the rectifier filter circuit to access the electric energy output from the rectifier filter circuit and control the electric energy output from the rectifier filter circuit, Wherein the ripple elimination circuit is disposed at the output end of the lighting drive circuit to ensure the stability of the output voltage of the linear drive circuit based on the ripple elimination of the voltage output from the linear drive circuit, so as to ensure the stability of the output voltage of the linear drive circuit. This enables the lighting drive circuit to stably drive the light-emitting load.

In one embodiment, the microwave power supply and control circuit includes a microwave power supply circuit and a drive control circuit, wherein the input end of the microwave power supply circuit is electrically connected to the output end of the rectifier and filter circuit, so The output end of the microwave power supply circuit is electrically connected to the transmission interface, wherein the microwave power supply circuit is set in a state of accessing the direct current output by the rectifier and filter circuit, and the output end outputs a voltage in the voltage range of 5V-24V. Direct current, wherein the input end of the drive control circuit is electrically connected to the transmission interface to access the control signal at the transmission interface, and the output end of the drive control circuit is electrically connected to the lighting A driving circuit is used to control the electric energy output of the lighting driving circuit according to the control signal.

In one embodiment, the output voltage of the output terminal of the microwave power supply circuit is set to 5V-12V.

In one embodiment, the linear drive circuit is configured to use a non-isolated DC-DC circuit.

In one embodiment, the microwave power supply circuit is configured to use a non-isolated DC-DC circuit.

a microwave induction module;

A power supply mainboard, wherein the power supply mainboard has a power output interface and carries a rectifier filter circuit, wherein the output end of the rectifier filter circuit is electrically connected to the power output interface, and the rectifier filter circuit is configured When AC power is connected to its input end, the power output interface outputs DC power based on rectification and filtering of the AC power connected;

A control mainboard, wherein the control mainboard has a transmission interface and a control command interface, and carries a microwave power supply circuit and a drive control circuit, wherein the microwave power supply circuit and the drive control circuit are electrically connected to The transmission interface, the drive control circuit is electrically connected to the control command interface, wherein the microwave induction module is pluggably electrically connected to the transmission interface, and the control motherboard is pluggable. The ground is electrically connected to the power output interface, wherein the microwave power supply circuit is configured to connect the direct current output of the rectifier filter circuit to the state of the rectifier filter circuit output. The direct current is subjected to voltage reduction processing, and the voltage-reduced DC power is output to the transmission interface so that the microwave induction module is powered to detect object activity. The microwave induction module generates a control signal based on the detection result of the object activity. and transmit the control signal to the transmission interface; and

A lighting driving motherboard, wherein the lighting driving motherboard carries a linear driving circuit, wherein the lighting driving motherboard is pluggably and electrically connected to the power output interface and the control command interface, wherein the linear driving circuit The circuit is configured to control the electric energy output by the rectifier and filter circuit according to the control signal by the drive control circuit in a state where the lighting drive motherboard is electrically connected to the power output interface and the control command interface. Control to drive at least one light-emitting load connected to its output end.

In one embodiment, the lighting driving main board further carries a ripple elimination circuit, wherein the ripple elimination circuit is disposed at an output end of the lighting driving circuit to control the output based on the output from the lighting driving circuit. The voltage ripple elimination ensures the stability of the output voltage of the linear drive circuit.

By understanding the following description and drawings, further objectives and advantages of the present invention will be fully reflected.

Description of drawings

FIG. 1 is a schematic block diagram of a circuit structure of an LED modular driving circuit according to an embodiment of the present invention.

FIG. 2 is an equivalent circuit schematic diagram of the LED modular driving circuit according to the above embodiment of the present invention.

Figure 3 is a preferred equivalent circuit schematic diagram of the LED modular drive circuit according to the above embodiment of the present invention.

FIG. 4 is a schematic block diagram of a circuit structure of a modified embodiment of the LED modular drive circuit according to the above embodiment of the present invention.

Detailed ways

The following description is used to disclose the invention so that those skilled in the art can implement the invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious changes. type. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the invention.

Those skilled in the art should understand that in the disclosure of the present utility model, the terms "vertical", "horizontal", "upper", "lower", "front", "back", "left", "right" The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings and are only for convenience of description. The present invention and simplified description do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the above terms should not be construed as limitations of the present invention.

It should be understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in other embodiments, the number of the element may be The number may be multiple, and the term "one" shall not be understood as a limitation on the number.

In the description of the present utility model, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a removable connection. Detachable connection, or integral connection; it can be a mechanical connection, an electrical connection or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be an internal connection between two elements or a mutual communication between two elements functional relationship. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

The utility model provides an LED modular drive circuit, which obtains electric energy from an external power supply at the opposite front end and then transfers it to the light-emitting load 30 at the opposite rear end. In the present utility model, for convenience of description, the LED modular drive circuit is placed close to One end of the external power supply is used as the input end, and the end close to the light-emitting load 30 is used as the output end. The LED modular intelligent drive circuit can perform presence detection based on the microwave detection technology based on the Doppler effect principle, so as to detect the presence based on the corresponding detection results. To realize intelligent self-control, the LED modular intelligent drive circuit is designed in a modular manner to simplify the corresponding production process, which is beneficial to the installation and debugging of the LED modular intelligent drive circuit.

Specifically, with reference to Figure 1 of the accompanying drawings of the present utility model, the LED modular drive circuit includes a circuit mainboard 10 and a microwave induction module 20, wherein the circuit mainboard 10 carries the LED modular The main circuit of the drive circuit is used to realize the circuit modular design of the LED modular drive circuit, wherein the circuit mainboard 10 has a transmission interface 101, and the microwave induction module 20 is pluggably and electrically connected to the The status of the transmission interface 101 is electrically connected to the main circuit of the LED modular drive circuit, so that the corresponding circuit connection can be easily realized, which is conducive to simplification. Circuit design of the LED modular drive circuit.

In detail, the circuit mainboard 10 carries a rectifier filter circuit 11, a lighting drive circuit 12 and a microwave power supply and control circuit 13, wherein the rectifier filter circuit 11 is configured to connect the AC power at its input end based on the state of the AC power. The rectification and filtering process of the input AC power outputs DC power at its output end, wherein the input end of the lighting drive circuit 12 is electrically connected to the output end of the rectification and filtering circuit 11 so as to be connected from the rectification and filtering circuit 11 The electric energy output by the output end of the luminous load 30 is electrically connected to its output end, thereby driving the luminous load 30 that is electrically connected to its output end; wherein the microwave power supply and control circuit 13 is electrically connected to the transmission interface 101, wherein the microwave power supply and control circuit 13 is electrically connected to the transmission interface 101. The input end of the circuit 13 is electrically connected to the output end of the rectifier and filter circuit 11, so as to receive the direct current output from the rectifier and filter circuit 11 and perform voltage reduction processing, so that the output at the transmission interface 101 is subjected to voltage reduction processing. direct current, wherein the microwave induction module 20 is configured to detect object activity when the transmission interface 101 is powered by the microwave power supply and control circuit 13 to generate a control signal based on the detection result of the object activity, wherein the The microwave power supply and control circuit 13 receives the control signal and controls the power output of the lighting driving circuit 12 according to the control signal.

Refer to Figure 2 of the accompanying drawings of the present utility model for details. The rectifier and filter circuit 11 includes a fuse resistor FD, a varistor M1, a rectifier bridge stack BR1, a first film capacitor CBB1, a second Film capacitor CBB2, a common mode inductor L2 and a rectifier filter circuit resistor R1, the live wire of the AC mains power is electrically connected to one of the AC input terminals of the rectifier bridge stack BR1 through the fuse resistor FD, and the zero line of the AC mains power The line is electrically connected to the other AC input terminal of the rectifier bridge stack BR1, and the two ends of the varistor M1 are respectively connected to the two AC input terminals of the rectifier bridge stack BR1 to prevent surges and /Or perform overvoltage protection. In some embodiments, the varistor M1 can also be implemented as a transient suppression diode, wherein the DC output negative terminal of the rectifier bridge stack BR1 is grounded, and the rectifier bridge The DC output positive terminal of the stack BR1 is connected to one end of the rectifier filter circuit resistor R1, wherein one end of the first film capacitor CBB1 is electrically connected to the rectifier filter circuit resistor R1 and the rectifier bridge stack BR1 Between the DC output positive terminals, the other end of the first film capacitor CBB1 is grounded to form a filtering process for the electric energy output by the DC output positive terminal of the rectifier bridge stack BR1, wherein the second film capacitor CBB2 One end is electrically connected to the other end of the rectifier filter circuit resistor R1, the other end of the second film capacitor CBB2 is grounded, and the common mode inductor L2 is connected in parallel to the rectifier filter circuit resistor R1.

Further, the lighting drive circuit 12 specifically includes a linear drive circuit 121 and a linear drive circuit 121. Wave elimination circuit 122, in which the input end of the linear drive circuit 121 is electrically connected to the output end of the rectifier filter circuit 11 to receive the power output from the rectifier filter circuit 11 and to the rectifier filter circuit. 11 to control the output power, wherein the ripple elimination circuit 122 is disposed at the output end of the lighting driving circuit 122 to ensure the linearity based on ripple elimination of the voltage output from the linear driving circuit 121 The stability of the output voltage of the drive circuit 121 enables the lighting drive circuit 12 to stably drive the light-emitting load 30, thus ensuring the performance stability of the LED modular intelligent drive circuit and providing users with good use. experience.

Specifically, in this embodiment of the present invention, the linear drive circuit 121 is configured to adopt a non-isolated DC-DC circuit, and the linear drive circuit 121 includes a non-isolated step-down constant current drive. Chip U1, the specific pins of the non-isolated step-down constant current driver chip U1 are as shown in the following table:

The linear driving circuit 121 further includes a driving circuit first resistor R17, a driving circuit second resistor R4, a driving circuit first electrolytic capacitor E4, a driving circuit first capacitor C2, and a driving circuit first diode. D2, a first power switch Q1 of a driving circuit, a third resistor R12 of a driving circuit, a fourth resistor R10 of a driving circuit, a second diode D6 of a driving circuit, a fifth resistor R6 of a driving circuit, and a third resistor R6 of a driving circuit. Six resistors R7, a seventh resistor R5 of a driving circuit, a third diode D1 of a driving circuit, a second capacitor C3 of a driving circuit, an eighth resistor R8 of a driving circuit, a ninth resistor R11 of a driving circuit, and a third resistor R11 of a driving circuit. Ten resistors R9, a drive circuit second electrolytic capacitor E1, a drive circuit eleventh resistor R19 and a drive circuit filter inductor L1, wherein one end of the drive circuit first resistor R17 is electrically connected to the rectifier filter circuit 11, the other end of the first resistor R17 of the drive circuit is electrically connected to one end of the second resistor R4 of the drive circuit, and the other end of the second resistor R4 of the drive circuit is electrically connected to the The first pin of the non-isolated buck constant current driver chip U1, wherein the drain of the first power switch Q1 of the driver circuit is electrically connected to the output end of the rectifier filter circuit 11, The gate of the first power switch Q1 of the driving circuit is electrically connected to one end of the third resistor R12 of the driving circuit, and the other end of the third resistor R12 of the driving circuit is electrically connected to the third resistor R12 of the driving circuit. One end of the four resistors R10 and the other end of the fourth resistor R10 of the driving circuit are electrically connected to the sixth pin of the non-isolated buck constant current driving chip U1, wherein the first diode D2 of the driving circuit The anode of is electrically connected to the gate of the first power switch Q1 of the driving circuit, and the cathode of the first diode D2 of the driving circuit is electrically connected to the other end of the third resistor R12 of the driving circuit, The source of the first power switch Q1 of the driving circuit is electrically connected to one end of the sixth resistor R7 of the driving circuit, and the other end of the sixth resistor R7 of the driving circuit is electrically connected to the driving circuit. One end of the filter inductor L1, the drive circuit filter inductor L1 is electrically connected to the positive electrode of the light-emitting load 30, and one end of the sixth resistor R7 of the drive circuit is electrically connected to the non-isolated buck constant voltage. The fifth pin of the current driver chip U1, the other end of the sixth resistor R7 of the driver circuit is electrically connected to the second pin of the non-isolated buck constant current driver chip U1, the seventh resistor R5 of the driver circuit is connected in parallel to the sixth resistor R7 of the driving circuit, wherein one end of the first capacitor C2 of the driving circuit is electrically connected to the third pin of the non-isolated buck constant current driving chip U1, and the third pin of the driving circuit The other end of a capacitor C2 is electrically connected between the other end of the sixth resistor R7 of the driving circuit and the second pin of the non-isolated buck constant current driving chip U1, and is electrically connected to the The cathode of the first electrolytic capacitor E4 of the drive circuit, and the anode of the first electrolytic capacitor E4 of the drive circuit are electrically connected between the second resistor R4 of the drive circuit and the non-isolated step-down constant current drive chip U1, The cathode of the second diode D6 of the driving circuit is electrically connected to the anode of the first electrolytic capacitor E4 of the driving circuit, and the anode of the second diode D6 of the driving circuit is electrically connected to the driving circuit. One end of the fifth resistor R6 of the circuit and the other end of the fifth resistor R6 of the drive circuit are electrically connected to the other end of the filter inductor L1 of the drive circuit and one end of the tenth resistor R9 of the drive circuit. The drive circuit The other end of the tenth resistor R9 is electrically connected to one end of the ninth resistor R11 of the drive circuit, and the other end of the ninth resistor R11 of the drive circuit is electrically connected to the non-isolated buck constant current drive chip. The fourth pin of U1, one end of the eighth resistor R8 of the drive circuit is electrically connected between the ninth resistor R11 of the drive circuit and the non-isolated buck constant current drive chip U1. One end of the eight resistor R8 is grounded, the second capacitor C3 of the driving circuit is connected in parallel with the eighth resistor R8 of the driving circuit, and the cathode of the third diode D1 of the driving circuit is electrically connected to the non- The fifth pin of the isolated buck constant current driver chip U1, the anode of the third diode D1 of the driver circuit is grounded, and one end of the eleventh resistor R19 of the driver circuit is electrically connected to the driver circuit The other end of the filter inductor L1, the eleventh resistor of the drive circuit The other end of R19 is grounded, wherein the anode of the second electrolytic capacitor E1 of the drive circuit is electrically connected to the other end of the drive circuit filter inductor L1 and the cathode is grounded to the eleventh resistor of the drive circuit. R19 is connected in parallel to form an electric energy output filter for the linear driving circuit 121 with the eleventh resistor R19 of the driving circuit.

Further, the ripple elimination circuit 122 includes a ripple suppression chip U2, and the specific pins of the ripple suppression chip U2 are as shown in the following table:

The ripple elimination circuit 122 further includes a first elimination circuit resistor R22, a elimination circuit second resistor R16, a elimination circuit third resistor R2, a elimination circuit fourth resistor R13, and a elimination circuit fifth resistor R15. A cancellation circuit power switch Q2, in which the first pin of the ripple suppression chip U2 is electrically connected between the output end of the linear drive circuit 121 and the anode of the light-emitting load 30, the ripple suppression The second pin of the chip U2 is grounded, the third pin of the ripple suppression chip U2 is grounded through the first resistor R22 of the elimination circuit, and the fourth pin of the ripple suppression chip U2 is electrically connected to the The gate of the cancellation circuit power switch Q2, the drain of the cancellation circuit power switch Q2 are electrically connected to the negative electrode of the light-emitting load 30, and the source of the cancellation circuit power switch Q2 is electrically connected. At one end of the fifth resistor R15 of the cancellation circuit, the other end of the fifth resistor R15 of the cancellation circuit is grounded, and the fifth pin of the ripple suppression chip U2 is electrically connected to the power switch tube of the cancellation circuit. Between the source of Q2 and the fifth resistor R15 of the cancellation circuit, the fourth resistor R13 of the cancellation circuit is connected in parallel with the fifth resistor R15 of the cancellation circuit, wherein one end of the third resistor R2 of the cancellation circuit is electrically connected Connected between the drain of the power switch Q2 of the cancellation circuit and the negative electrode of the light-emitting load 30, one end of the second resistor R16 of the cancellation circuit is electrically connected to the other end of the third resistor R2 of the cancellation circuit, The other end of the second resistor R16 of the cancellation circuit is grounded, and the sixth pin of the ripple suppression chip U2 is electrically connected between the third resistor R2 of the cancellation circuit and the second resistor R16 of the cancellation circuit. .

Further, the microwave power supply and control circuit 13 includes a microwave power supply circuit 131 and a drive control circuit 132, wherein the input end of the microwave power supply circuit 131 is electrically connected to the output end of the rectifier filter circuit 11. , the output end of the microwave power supply circuit 131 is electrically connected to the transmission interface 101, wherein the microwave power supply circuit 131 is set in a state of receiving the direct current output from the rectifier filter circuit 11, and the output end outputs at 5V. -24V direct current in the voltage range, wherein the input end of the drive control circuit 132 is electrically connected to the transmission interface 101 so as to receive the control signal in the transmission interface 101. The drive control circuit 101 The output terminal is electrically connected to the lighting driving circuit 12 to control the power output of the lighting driving circuit 12 according to the control signal.

Specifically, the microwave power supply circuit 131 is configured to adopt a non-isolated DC-DC circuit, and the microwave power supply circuit 131 includes a non-isolated step-down constant voltage chip U3, and a power supply circuit first diode D5. , a first electrolytic capacitor E3 of a power supply circuit, a first capacitor C1 of a power supply circuit, a second diode D4 of a power supply circuit, a third diode D3 of a power supply circuit, a filter inductor L3 of a power supply circuit, and a second power supply circuit Electrolytic capacitor E2, a second capacitor C5 of a power supply circuit, a first resistor R14 of a power supply circuit, a second resistor R3 of a power supply circuit, a third resistor R21 of a power supply circuit, and a third capacitor C4 of a power supply circuit, wherein the non-isolation drop The specific pins of the pressure-type constant voltage chip U3 are shown in the following table:

The anode of the first diode D5 of the power supply circuit is electrically connected to the output end of the rectifier and filter circuit 11 , and the cathode of the first diode D5 of the power supply circuit is electrically connected to the power supply circuit. The anode of the first electrolytic capacitor E3 and the cathode of the first electrolytic capacitor E3 of the power supply circuit are grounded, and the fourth pin of the non-isolated step-down constant voltage chip U3 is electrically connected to the first and second pins of the power supply circuit. between the cathode of the diode D5 and the anode of the first electrolytic capacitor E3 of the power supply circuit, wherein the first resistor R14 of the power supply circuit is electrically connected to the fifth pin and the non-isolated step-down constant voltage chip U3 between the second pins as a sampling resistor, wherein the third pin of the non-isolated step-down constant voltage chip U3 is electrically connected to the cathode of the second diode D4 of the power supply circuit. The anode of the second diode D4 is electrically connected to the power input port V of the transmission interface 101 and the connected power supply, wherein the non-isolated The first pin of the step-down constant voltage chip U3 is electrically connected to one end of the power supply circuit filter inductor L3, and the other end of the power supply circuit filter inductor L3 is electrically connected to the second diode of the power supply circuit. Between the anode of tube D4 and the transmission interface 101, one end of the first capacitor C1 of the power supply circuit is electrically connected to the non-isolated step-down constant voltage chip U3 and the second diode of the power supply circuit Between the cathodes of D4, the other end of the first capacitor C1 of the power supply circuit is electrically connected between the non-isolated step-down constant voltage chip U3 and the power supply circuit filter inductor L3, wherein the power supply circuit's first capacitor C1 The cathode of the third diode D3 is electrically connected between the non-isolated step-down constant voltage chip U3 and the power supply circuit filter inductor L3, and the anode of the third diode D3 of the power supply circuit is grounded, where The anode of the second electrolytic capacitor E2 of the power supply circuit is electrically connected between the anode of the second diode D4 of the power supply circuit and the transmission interface 101, and the cathode of the second electrolytic capacitor E2 of the power supply circuit is grounded. , wherein the second capacitor C5 of the power supply circuit and the second resistor R3 of the power supply circuit are respectively connected in parallel with the second electrolytic capacitor E2 of the power supply circuit, so as to jointly form the microwave power supply with the second electrolytic capacitor E2 of the power supply circuit. The power output of the circuit 15 is filtered, wherein one end of the third capacitor C4 of the power supply circuit is electrically connected between the anode of the second diode D4 of the power supply circuit and the transmission interface 101, and the third capacitor C4 of the power supply circuit The other end of C4 is grounded, and one end of the third resistor R21 of the power supply circuit is electrically connected to one end of the third capacitor C4 of the power supply circuit. Specifically, in this embodiment of the present invention, the microwave The output voltage of the power supply circuit 131 at the power input port V of the transmission interface 101 is set to 5V-12V.

Further, the drive control circuit 132 includes a control circuit first resistor R20, a control circuit second resistor R18 and a control circuit power switch Q3, wherein one end of the control circuit first resistor R20 is electrically connected. At the signal output port O of the transmission interface 101, the other end of the third resistor R21 of the power supply circuit is electrically connected between the first resistor R20 of the control circuit and the transmission interface 101, wherein the control circuit The other end of the first resistor R20 is electrically connected to the gate of the control circuit power switch Q3, and one end of the second resistor R18 of the control circuit is electrically connected to the first resistor R20 of the control circuit and the gate of the control circuit power switch Q3. Between the control circuit power switch Q3, the other end of the second resistor R18 of the control circuit is grounded, the source of the control circuit power switch Q3 is grounded, and the gate of the control circuit power switch Q3 is grounded. Electrically connected to the lighting driving circuit 12 .

Preferably, with further reference to Figure 3 of the accompanying drawings of the present utility model, in the preferred equivalent circuit schematic diagram of the LED modular intelligent drive circuit shown in Figure 3, the linear drive circuit 121 further includes a drive circuit. Twelve resistors R8 and a third capacitor C3 of a driving circuit, wherein the driving circuit One end of the twelfth resistor R8 is electrically connected between the first capacitor C2 of the driving circuit and the sixth resistor R7 of the driving circuit, and the other end of the twelfth resistor R8 of the driving circuit is electrically connected. Between the ninth resistor R11 of the drive circuit and the non-isolated buck constant current drive chip U1, one end of the third capacitor C3 of the drive circuit is electrically connected to the first capacitor C2 of the drive circuit and the between the sixth resistor R7 of the driving circuit and grounded, and the other end of the third capacitor C3 of the driving circuit is electrically connected to the ninth resistor R11 of the driving circuit and the non-isolated buck constant current driving chip U1 between. The microwave power supply circuit 131 further includes a power supply circuit power switch Q4, wherein the power supply circuit power switch Q4 forms a voltage stabilizing unit in the microwave power supply circuit 131 to ensure the output voltage of the microwave power supply circuit 131. stability, thereby ensuring the working stability of the microwave induction module 20. The drive control circuit 132 further includes a control circuit third resistor R27, a control circuit first diode D7, a control circuit fourth resistor R28, a control circuit first power transistor U5, a control circuit fifth Resistor R26, a control circuit second power transistor U6, a control circuit sixth resistor R25, a control circuit seventh resistor R29, a control circuit first capacitor C7, wherein the cathode of the control circuit first diode D7 is electrically connected to the signal output port O of the transmission interface 101, and the anode of the first diode D7 of the control circuit is electrically connected to one end of the third resistor R27 of the control circuit. The other end of the resistor R27 is electrically connected to the base of the first power transistor U5 of the control circuit, and one end of the fourth resistor R28 of the control circuit is electrically connected to the third resistor R27 of the control circuit and the Between the first power type transistor U5 of the control circuit, the other end of the fourth resistor R28 of the control circuit is grounded, wherein the emitter of the first power type transistor U5 of the control circuit is grounded, and the first power type transistor U5 of the control circuit is connected to the ground. The collector of the transistor U5 is electrically connected to one end of the fifth resistor R26 of the control circuit, and the other end of the fifth resistor R26 of the control circuit is electrically connected to the base of the second power type transistor U6 of the control circuit. and one end of the sixth resistor R25 of the control circuit, and the other end of the sixth resistor R25 of the control circuit is electrically connected to the emitter of the second power transistor U6 of the control circuit and the power supply, wherein the second The collector of the power transistor U6 is electrically connected to one end of the first resistor R20 of the control circuit and one end of the seventh resistor R29 of the control circuit. The other end of the seventh resistor R29 of the control circuit is grounded, wherein the The first capacitor C7 of the control circuit is connected in parallel to the seventh resistor R29 of the control circuit, so that the drive control circuit 132 forms a level conversion unit. Based on the preferred design of the present utility model, the LED modular intelligent drive circuit can Adapt to application scenarios with higher power requirements and higher performance requirements.

Particularly, in this embodiment of the present invention, the light-emitting load 40 is implemented as a multi- LED lamp set composed of LED lamp beads.

It is worth mentioning that the main circuit of the LED modular intelligent drive circuit is designed to be carried on different circuit boards to further simplify the circuit design on each circuit board and improve the efficiency of the LED modular intelligent drive circuit. design flexibility. Specifically referring to Figure 4 of the accompanying drawings of the present utility model, a structural block diagram of the LED modular intelligent driving circuit according to a modified embodiment of the present utility model is schematically illustrated, wherein the LED modular intelligent driving circuit includes a power supply mainboard 100 , a lighting driver mainboard 200 and a control mainboard 300, wherein the power supply mainboard 100 has a power output interface 1001, the rectification and filtering circuit 11 is carried on the power supply mainboard 100, wherein the output end of the rectification and filtering circuit 11 is electrically connected to the power output interface 1001, wherein the control mainboard 300 has the transmission interface 101 and a control command interface 3001, and carries the microwave power supply circuit 131 and the drive control circuit 132, wherein the The drive control circuit 132 is electrically connected to the control command interface 3001, wherein the microwave induction module 20 is electrically and pluggably connected to the transmission interface 101, and the control motherboard 200 is pluggably and electrically connected to the transmission interface 101. Electrically connected to the power output interface 1001, wherein the microwave power supply circuit 131 is configured to perform step-down processing on the DC power output by the rectifier and filter circuit 11 when connected to the DC power output by the rectifier and filter circuit 11, and The transmission interface 101 outputs the step-down DC power so that the microwave induction module 20 is powered, wherein the lighting driving mainboard 300 carries the linear driving circuit 121 and the ripple elimination circuit 122, wherein The lighting driving motherboard 300 is pluggably and electrically connected to the power output interface 1001 and the control command interface 3001, wherein the linear driving circuit 121 is provided when the lighting driving motherboard 200 is electrically connected to The states of the power output interface 1001 and the control command interface 3001 are controlled by the drive control circuit 132 according to the control signal to control the electric energy output by the rectifier and filter circuit 11 .

It is worth mentioning that based on the design of the above modified embodiment, the pluggable connection relationship between the power supply mainboard 100, the lighting driving mainboard 200 and the control mainboard 300 makes the power supply mainboard 100, the The combination and replacement between the lighting driver motherboard 200 and the control motherboard 300 are more flexible to meet corresponding market demands.

Those skilled in the art should understand that the embodiments of the present invention shown in the above description and drawings are only examples and do not limit the present invention. The purpose of the utility model has been completely and effectively achieved. The functional and structural principles of the present utility model have been shown and described in the embodiments. Without departing from the principles, the implementation of the present utility model may have any deformation or modification.

Claims

LED modular intelligent drive circuit is characterized by including:

a microwave induction module;

A circuit mainboard, wherein the circuit mainboard has a transmission interface, wherein the microwave induction module is pluggably and electrically connected to the transmission interface, wherein the circuit mainboard carries a rectifier filter circuit, a lighting drive circuit and A microwave power supply and control circuit, wherein the rectification and filtering circuit is configured to output direct current at its output end based on the rectification and filtering process of the accessed alternating current when the input end of the circuit is connected to alternating current; wherein the input end of the lighting drive circuit is electrically connected to the output end of the rectifier filter circuit to access the electric energy output from the output end of the rectifier filter circuit to drive at least one luminous load electrically connected to the output end thereof; wherein the microwave power supply The microwave power supply and control circuit is electrically connected to the transmission interface, and the input end of the microwave power supply and control circuit is electrically connected to the output end of the rectifier filter circuit to receive the DC power output by the rectifier filter circuit and conduct step-down processing, thereby outputting the step-down processed direct current to the transmission interface, wherein the microwave induction module is configured to detect object activity in a state where the transmission interface is powered by the microwave power supply and control circuit, so as to detect object activity The detection result of the activity generates a control signal, wherein the microwave power supply and control circuit is connected to the control signal and controls the power output of the lighting driving circuit according to the control signal.
The LED modular intelligent drive circuit according to claim 1, wherein the lighting drive circuit includes a linear drive circuit and a ripple elimination circuit, wherein the input end of the linear drive circuit is electrically connected to the rectifier filter. The output end of the circuit is used to access the electric energy output from the rectifier filter circuit and control the electric energy output from the rectifier filter circuit, wherein the ripple elimination circuit is provided at the output end of the lighting drive circuit to The stability of the output voltage of the linear drive circuit is ensured based on ripple elimination of the voltage output from the linear drive circuit, so that the lighting drive circuit can stably drive the light-emitting load.
The LED modular intelligent drive circuit according to claim 2, wherein the microwave power supply and control circuit includes a microwave power supply circuit and a drive control circuit, wherein the input end of the microwave power supply circuit is electrically connected to the rectifier The output end of the filter circuit circuit, the output end of the microwave power supply circuit is Electrically connected to the transmission interface, wherein the microwave power supply circuit is set in a state of accessing the direct current output from the rectifier and filter circuit, and outputs direct current in the voltage range of 5V-24V at the output end, wherein the drive control circuit The input end of the drive control circuit is electrically connected to the transmission interface to access the control signal at the transmission interface, and the output end of the drive control circuit is electrically connected to the lighting drive circuit to control the The signal controls the electrical energy output of the lighting drive circuit.
The LED modular intelligent driving circuit according to claim 3, wherein the output voltage of the output terminal of the microwave power supply circuit is set to 5V-12V.
The LED modular intelligent driving circuit according to claim 3, wherein the linear driving circuit is configured to adopt a non-isolated DC-DC circuit.
The LED modular intelligent driving circuit according to claim 3, wherein the microwave power supply circuit is configured to adopt a non-isolated DC-DC circuit.
LED modular intelligent drive circuit is characterized by including:

a microwave induction module;

A power supply mainboard, wherein the power supply mainboard has a power output interface and carries a rectifier filter circuit, wherein the output end of the rectifier filter circuit is electrically connected to the power output interface, and the rectifier filter circuit is configured When AC power is connected to its input end, the power output interface outputs DC power based on rectification and filtering of the AC power connected;

A control mainboard, wherein the control mainboard has a transmission interface and a control command interface, and carries a microwave power supply circuit and a drive control circuit, wherein the microwave power supply circuit and the drive control circuit are electrically connected to The transmission interface, the drive control circuit is electrically connected to the control command interface, wherein the microwave induction module is pluggably electrically connected to the transmission interface, and the control motherboard is pluggable. The ground is electrically connected to the power output interface, wherein the microwave power supply circuit is configured to perform step-down processing on the DC power output by the rectifier and filter circuit in a state of being connected to the DC power output by the rectifier and filter circuit, and in the The transmission interface outputs a reduced-voltage direct current so that the microwave induction module is powered to detect object movement. The microwave induction module generates a control signal based on the detection result of the object movement and transmits the control signal to the transport interface; and A lighting driving motherboard, wherein the lighting driving motherboard carries a linear driving circuit, wherein the lighting driving motherboard is pluggably and electrically connected to the power output interface and the control command interface, wherein the linear driving circuit The circuit is configured to control the electric energy output by the rectifier and filter circuit according to the control signal by the drive control circuit in a state where the lighting drive motherboard is electrically connected to the power output interface and the control command interface. Control to drive at least one light-emitting load connected to its output end.
The LED modular intelligent driving circuit according to claim 7, wherein the lighting driving main board further carries a ripple elimination circuit, wherein the ripple elimination circuit is disposed at the output end of the lighting driving circuit to control the Ripple elimination from the output voltage of the lighting drive circuit ensures stability of the output voltage of the linear drive circuit.
The LED modular intelligent driving circuit according to claim 8, wherein the linear driving circuit is configured to adopt a non-isolated DC-DC circuit.
The LED modular intelligent driving circuit according to claim 9, wherein the microwave power supply circuit is configured to adopt a non-isolated DC-DC circuit.