Multi-mode driven double-line LED controller and LED lamp thereof

Abstract

The utility model discloses a multi-mode driven double-line LED controller, and relates to the field of LED lamp control. According to the double-wire LED controller, the power interface, the power module, the H-bridge driving circuit, the control module and the double-wire output interface are configured to drive a double-wire LED lamp, then a first control variable is set for the control module through the three-wire input interface and the acquisition unit, and a second control variable is set for the control module through the parameter input unit. The wireless input unit is used for setting a third control variable for the control module, and the mode configuration unit is used for activating a control variable required by a user, so that the mode switching operation is simple, various lighting systems are adapted, the dimming circuit is simple and high in accuracy under various dimming and color modulation modes of the double-line LED lamp, and the dimming and color modulation effects of the double-line LED lamp are achieved. And the requirements of various users in different use scenes can be met.

Description

Technical Field

[0001] The utility model relates to the field of LED lamp control, in particular to a multi-mode driven double-line LED controller and an LED lamp thereof. Background Art

[0002] LED dimming and color adjustment technology plays an important role in providing efficient and flexible lighting solutions, and has good market application prospects with the continuous development of the market and the advancement of technology.

[0003] Generally speaking, the brightness adjustment of LED can be changed by the current size, switching time and duty cycle, and the color temperature adjustment of LED is achieved by adjusting the brightness of cold LED and warm LED respectively. For this reason, the traditional LED dimming and color adjustment configuration is three-wire control. Specifically, the three-wire control changes the brightness and color temperature of the LED by controlling the positive line, the negative cold light line and the negative warm light line. However, there are some problems with three-wire control, such as higher wiring cost, complex installation, high maintenance difficulty, low dimming efficiency, poor anti-electromagnetic interference performance, etc. Therefore, LED dimming and color adjustment can also be controlled by two lines of cold light, warm light, etc. Obviously, two-wire control has the advantages of low wiring cost, simple circuit, easy integration, high control accuracy and less electromagnetic interference.

[0004] In order to adapt to two-wire LED lights, two-wire LED controllers are essential. However, two-wire LED lights have different user application scenarios, and the current two-wire LED controllers cannot adapt well. For example, newly installed two-wire LED lights are often not convenient for users to control. For another example, in the old three-wire control system, it is often not conveniently compatible.

[0005] It can be seen that the two-wire LED controller in the prior art cannot adapt well to the application scenarios of two-wire LED lamps and cannot meet the usage requirements of users. Utility Model Content

[0006] In order to solve the problems existing in the prior art, the main purpose of the utility model is to provide a multi-mode driven two-wire LED controller and its LED lamp, which can operate in a variety of dimming and color adjustment modes such as three-wire control, manual adjustment and remote adjustment, so as to meet the needs of various users in different usage scenarios.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] In a first aspect, the utility model provides a multi-mode driven two-wire LED controller, comprising: a power interface, a power module, an H-bridge drive circuit, a two-wire output interface and a control module, wherein the power interface is used to obtain input power, the power module is used to be electrically connected to the power interface to provide power for the operation of the two-wire LED controller, the control module is used to generate a PWM signal of the H-bridge drive circuit, the H-bridge drive circuit is used to convert and generate two-wire LED drive power according to the PWM signal, and provide it to the two-wire output interface, wherein it also includes:

[0009] Three-wire input interface for connecting to three-wire LED drive power

[0010] A collection unit, for converting the three-wire LED driving power into a first control variable and providing it to a control module;

[0011] A parameter input unit, used to generate a second control variable according to a user operation and provide the second control variable to the control module;

[0012] a wireless input unit, used to generate a third control variable according to the wireless signal and provide the third control variable to the control module; and

[0013] The mode configuration unit is used to set an enable signal to the control module to activate one of the first control variable, the second control variable and the third control variable, and to generate a two-wire PWM signal according to the first control variable, the second control variable or the third control variable.

[0014] The above-mentioned two-wire LED controller, optionally, the mode configuration unit is a single-link three-way switch, the single-link three-way switch is configured with a fixed end, a first control end, a second control end and a third control end, the control module is configured with a first enable end, a second enable end and a third enable end, the fixed end is grounded, the first control end, the second control end and the third control end are electrically connected to the first enable end, the second enable end and the third enable end of the control module in sequence, so that when the fixed end is respectively connected to the first enable end, the second enable end and the third enable end, the control module correspondingly activates the first control variable, the second control variable and the third control variable.

[0015] In the above-mentioned two-wire LED controller, optionally, the parameter input unit is a potentiometer, the fixed end of the potentiometer is electrically connected to the power module, and the sliding end of the potentiometer is electrically connected to the control module.

[0016] The above-mentioned two-wire LED controller, optionally, the acquisition unit is an EL063X chip.

[0017] The above-mentioned two-wire LED controller, optionally, the wireless input unit is a BT3L Bluetooth module.

[0018] The above-mentioned two-wire LED controller, optionally, the H-bridge drive circuit consists of an upper bridge arm and a lower bridge arm, the output end of the upper bridge arm is electrically connected to one end of the two-wire output interface, and the output end of the lower bridge arm is electrically connected to the other end of the two-wire output interface.

[0019] The above-mentioned two-wire LED controller may optionally further include a drive conversion unit, the output end of which is electrically connected to the upper bridge arm and the lower bridge arm of the H-bridge drive circuit respectively, so as to drive the upper bridge arm and the lower bridge arm to operate respectively according to the two-wire PWM signal.

[0020] The above-mentioned two-wire LED controller may optionally further include a driving protection unit, which is used to obtain a two-wire PWM signal, provide the two-wire PWM signal to the driving conversion unit, and provide the PWM signal to the driving conversion unit when the driving conversion unit operates abnormally.

[0021] The above-mentioned two-wire LED controller, optionally, the power interface is adapted to a voltage of 5V to 60V, the first input terminal of the power module is a voltage of 10V, and the second output terminal of the power module is a voltage of 3.3V.

[0022] In a second aspect, the utility model provides an LED lamp, comprising the above-mentioned multi-mode driven two-wire LED controller.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] (1) The two-wire LED controller of the utility model, on the one hand, realizes the driving of the two-wire LED lamp through the power interface, power module, H-bridge drive circuit, control module and two-wire output interface, and on the other hand, sets the first control variable to the control module through the three-wire input interface and the acquisition unit, sets the second control variable to the control module through the parameter input unit, sets the third control variable to the control module through the wireless input unit, and activates the control variable according to the user's needs through the mode configuration unit, so that the LED lamp can operate in a variety of dimming and color adjustment modes such as three-wire control, manual adjustment and remote adjustment. At the same time, the mode switching operation of the two-wire LED controller is simple, it is suitable for a variety of lighting systems, the dimming circuit is simple and has high precision, and can meet the needs of various users in different usage scenarios.

[0025] (2) The LED lamp of the present invention is equipped with the two-wire LED controller of the present invention, so that the LED lamp can be promoted to new and old lighting systems, and has the advantages of low wiring cost, simple circuit, easy integration, high control accuracy and less electromagnetic interference.

[0026] (3) Since the two-wire LED controller of the present invention is equipped with an H-bridge driving circuit, the two-wire output interface can also be used to control the operation of the motor. When controlling the operation of the motor, the mode configuration unit can activate the second control variable or the third control variable.

[0027] The utility model is further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the functional circuit structure of a two-wire LED controller according to an embodiment of the utility model;

[0029] Figure 2 A first partial structural diagram of a specific circuit of a two-wire LED controller according to an embodiment of the utility model;

[0030] Figure 3 A second partial structural diagram of a specific circuit of a two-wire LED controller according to an embodiment of the utility model;

[0031] Figure 4 A third partial structural diagram of a specific circuit of a two-wire LED controller according to an embodiment of the utility model.

[0032] Figure numerals: 11, power interface; 12, H-bridge driving circuit; 13, two-wire output interface; 14, control module; 15, three-wire input interface; 16, acquisition unit; 17, parameter input unit; 18, wireless input unit; 19, mode configuration unit; 20, drive conversion unit; 21, drive protection unit; 22, power module. DETAILED DESCRIPTION

[0033] In order to better illustrate the purpose, technical solution and advantages of the utility model, the specific implementation of the utility model is further described in detail below in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the utility model, but are not intended to limit the scope of the utility model.

[0034] like Figure 1 As shown, a multi-mode driven two-wire LED controller according to an embodiment of the utility model is shown. The two-wire LED controller comprises a power interface 11, a power module 22, an H-bridge drive circuit 12, a two-wire output interface 13, a control module 14, a three-wire input interface 15, a collection unit 16, a parameter input unit 17, a wireless input unit 18, a mode configuration unit 19, a drive conversion unit 20 and a drive protection unit 21.

[0035] The power interface 11 is used to obtain input power and is electrically connected to the input end of the power module 22 and the input end of the H-bridge drive circuit 12 to provide input power. The power module 22 performs power conversion on the input power to adapt the input power to the power for the operation of the LED controller. The power module 22 provides power for the operation of the control module 14, the acquisition unit 16, the parameter input unit 17, the wireless input unit 18, the mode configuration unit 19, the drive conversion unit 20 and the drive protection unit 21.

[0036] Among them, the two-wire output interface 13 is used to be electrically connected to the two-wire LED lamp plug. The output end of the H-bridge drive circuit 12 is electrically connected to the two-wire output interface 13 to generate two-wire LED drive power according to the PWM signal conversion. The output end of the drive conversion unit 20 is electrically connected to the control end of the H-bridge drive circuit 12 to control the operation of the switch device in the H-bridge drive circuit 12 according to the PWM signal. The front side of the drive protection unit 21 is electrically connected to the control module 14, and the rear side of the drive protection unit 21 is electrically connected to the drive conversion unit 20. The control module 14 can generate a corresponding two-wire PWM signal according to the activation state of the current control variable. When the drive conversion unit 20 does not exceed the preset voltage range, the drive protection unit 21 provides the two-wire PWM signal to the drive conversion unit 20. When the drive conversion unit 20 exceeds the preset voltage range, the two-wire PWM signal is stopped from being provided to the drive conversion unit 20.

[0037] Among them, the three-wire input interface 15 is used to access the three-wire LED driving power. The input end of the acquisition unit 16 is electrically connected to the three-wire input interface 15, and the output end of the acquisition unit 16 is electrically connected to the input end of the control module 14, so as to convert the three-wire LED driving power into a first control variable and provide it to the control module 14. The parameter input unit 17 is electrically connected to the input end of the control module 14, and is used to generate a second control variable according to a user operation. The wireless input unit 18 is electrically connected to the input end of the control module 14, and is used to generate a third control variable according to a wireless signal. Regardless of whether the control module 14 receives the first control variable, the second control variable or the third control variable, it can generate a corresponding two-wire PWM signal. The mode configuration unit 19 is electrically connected to the control module 14, and is used to set an enable signal to the control module 14. According to the setting of the enable signal, the control module 14 activates one of the first control variable, the second control variable and the third control variable to generate a corresponding two-wire PWM signal.

[0038] It is worth noting that the two-wire LED controller of this embodiment is applied in a three-wire lighting system, and the power interface 11 of the two-wire LED controller can be connected to the mains through a transformer. The two-wire output interface 13 of the two-wire LED controller can be connected to a two-wire dual-color LED lamp. The three-wire input interface 15 of the two-wire LED controller is connected to the three-wire conductor in the three-wire lighting system. After completion, the user operates the mode configuration unit 19 to activate the first control variable in the control module 14. When in use, the three-wire LED driving power is converted into the first control variable through the acquisition unit 16, and the control module 14 generates a two-wire PWM signal according to the first control variable. The drive conversion unit 20 controls the H-bridge driving circuit 12 to operate according to the two-wire PWM signal, and the H-bridge driving circuit 12 generates the two-wire LED driving power at the two-wire output interface 13. As the brightness and color temperature control amount of the three-wire LED driving power changes, the brightness and color temperature of the two-wire LED driving power will also change accordingly.

[0039] It is worth noting that the two-wire LED controller of this embodiment is used in the initial installation of the lighting system. The power interface 11 of the two-wire LED controller is connected to the mains through a transformer, and the two-wire output interface 13 of the two-wire LED controller is connected to the two-wire LED lamp. After completion, the user operates the mode configuration unit 19 to activate the second control variable in the control module 14. At the same time, the user operates the parameter input unit 17 to generate the second control variable. Finally, the H-bridge drive circuit 12 generates the two-wire LED driving power corresponding to the brightness and color temperature of the second control variable. After completion, the user can operate the mode configuration unit 19 to activate the third control variable in the control module 14. At the same time, the user can establish communication with the wireless input unit 18 of the two-wire LED controller through the terminal device at a remote location. The user operates the terminal device, and the control module 14 generates the third control variable from the received wireless signal, and finally changes the brightness and color temperature of the LED lamp.

[0040] It can be seen that the two-wire LED controller of the present application switches between dimming and color adjustment modes such as three-wire control, manual adjustment and remote adjustment through the mode configuration unit 19, which can adapt to the needs of various users in different usage scenarios.

[0041] like Figures 2 to 4As shown, it is a specific circuit of a two-wire LED controller according to an embodiment of the utility model. Specifically, in this embodiment, the power interface 11 is adapted to access a DC voltage of 12V to 24V. On the one hand, the power interface 11 provides the DC voltage to the power module 22, and the power module 22 converts the input DC voltage into a 10V DC voltage through a primary conversion, and then converts it into a 3.3V DC voltage through a secondary conversion. On the other hand, the power interface 11 provides the DC voltage to the H-bridge drive circuit 12. In other words, the H-bridge drive circuit 12 can output a DC voltage of 12V to 24V to the two-wire output interface 13, and the two-wire LED controller supports LED lamps with a DC voltage of 12V to 24V.

[0042] Specifically, in this embodiment, the H-bridge drive circuit 12 is configured with switch chips Q1 to Q4 of model NCE6050KA. Among them, the Q1 switch chip and the Q2 switch chip are upper bridge arms, and the middle end between the two is electrically connected to the YOUT end of the two-wire output port. The Q3 switch chip and the Q4 switch chip are lower bridge arms, and the middle end between the two is electrically connected to the WOUT end of the two-wire output port. The input ends of the Q1 switch chip and the Q3 switch chip are electrically connected to the DC voltage of the power interface 11 respectively. The input ends of the Q2 switch chip and the Q4 switch chip are electrically connected to the ground end respectively. The drive conversion unit 20 is mainly composed of two EG2104M chips. One of the EG2104M chips controls the Q1 switch chip connected to the upper bridge arm with a PWM-Y signal, and controls the Q2 switch chip connected to the upper bridge arm with a PWM-Y complementary signal. The other EG2104M chip controls the Q3 switch chip connected to the upper bridge arm with a PWM-W signal, and controls the Q4 switch chip connected to the upper bridge arm with a PWM-W complementary signal. The drive protection unit 21 adopts a 2233B chip. The YH end and the WH end of the control module 14 are connected to the 1 and 2 ends of the 2233B chip. The 7 and 8 ends of the 2233B chip are respectively connected to the two EG2104M chips, so that the PWM-Y signal and the PWM-W signal generated by the YH end and the WH end of the control module 14 are provided to the two EG2104M chips. At the same time, resistors R17 and R26 will sense the voltage state of the two EG2104M chips, and provide the voltage state to the 6 end of the 2233B chip. When the voltage exceeds the preset, the PWM-Y signal and the PWM-W signal will be disconnected. The two EG2104M chips will restore the default disconnected state, and the Q1 and Q3 switch chips will restore the default disconnected state.

[0043] Specifically, in this embodiment, the three-wire input interface 15 can be connected to the three-wire LED driving power, which are +IN, -INY and -INW. The +IN, -INY and -INW terminals of the three-wire input interface 15 are connected to the acquisition unit 16. The acquisition unit 16 is a model EL063X logic gate optocoupler chip, and the acquisition unit 16 is connected to the 3.3V voltage of the power module 22. The acquisition unit 16 converts the voltage change between the +IN terminal and the -INY terminal into the first control variable of the Y terminal, and converts the voltage change between the +IN terminal and the -INW terminal into the first control variable of the W terminal. The acquisition unit 16 connects the converted first control variables of the Y terminal and the W terminal to the 19 terminal and the 15 terminal of the control module 14.

[0044] Specifically, in this embodiment, the parameter input unit 17 is configured as a knob-type potentiometer, a fixed end of the potentiometer is connected to the 3.3V voltage of the power module 22, and the sliding end of the potentiometer is connected to the 14th terminal of the control module 14 via the resistor R13. The 3.3V voltage forms a current signal on the potentiometer and the resistor R13, that is, the second control variable is generated and provided to the control module 14. The user's operation on the potentiometer will change the formed current signal, thereby changing the second control variable.

[0045] Specifically, in this embodiment, the wireless input unit 18 is a BT3L Bluetooth SoC wireless communication board, and the wireless input unit 18 is connected to the 3.3V DC voltage of the power module 22. The RY end and the RW end of the wireless input unit 18 are connected to the 17 end and the 16 end of the control module 14. The wireless input unit 18 establishes wireless communication with the user's mobile phone terminal, receives the third control variable sent by the user terminal, and sends the third control variable to the control module 14, thereby realizing the control of the light state at a longer distance. The wireless input unit 18 adopts the BT3L Bluetooth SoC wireless communication board, which can directly generate a current signal that the control module 14 can adapt.

[0046] Specifically, in this embodiment, the mode configuration unit 19 is a lever-type single-link three-control switch. The single-link three-control switch is configured with a fixed end, a first control end, a second control end, and a third control end. Among them, the fixed end of the single-link three-control switch is connected to the ground end. The first enabling end, the second enabling end, and the third enabling end of the control module 14 are the 20 end, the 5 end, and the 6 end of the control module 14, respectively. The first control end of the single-link three-control switch is connected to the 20 end of the control module 14, the second control end of the single-link three-control switch is connected to the 5 end of the control module 14, and the third control end of the single-link three-control switch is connected to the 6 end of the control module 14.

[0047] When the fixed end of the single-connected three-way switch is connected to the first control end, the end 20 of the control module 14 obtains a high-level signal, the first enable end is activated, and the control module 14 receives the first control variable according to the ends 19 and 15, and generates PWM-Y signal and PWM-W signal accordingly.

[0048] When the fixed end of the single-connected three-way switch is connected to the second control end, the 6 end of the control module 14 obtains a high-level signal, the second enable end is activated, and the control module 14 generates a PWM-Y signal and a PWM-W signal according to the second control variable at the 14 end.

[0049] When the fixed end of the single-connected three-control switch is connected to the third control end, the 5th end of the control module 14 obtains a high-level signal, the third enable end is activated, and the control module 14 generates PWM-Y signal and PWM-W signal according to the third control variable at the 17th end and the 16th end.

[0050] An LED lamp according to an embodiment of the utility model. The LED lamp includes a two-wire LED controller of the above embodiment. The LED lamp also includes an LED lamp. Among them, the LED lamp is composed of a warm-color LED series body and a cool-color LED series body, YOUT of the two-wire output interface 13 is connected to the warm-color LED series body, and WOUT of the two-wire output interface 13 is connected to the cool-color LED series body. When the duty cycle of the PWM-Y signal is increased and the duty cycle of the PWM-W signal is decreased, the color temperature of the LED lamp is adjusted to a warm color. When the duty cycle of the PWM-Y signal is decreased and the duty cycle of the PWM-W signal is increased, the color temperature of the LED lamp is adjusted to a cool color. When the duty cycle of the PWM-Y signal and the duty cycle of the PWM-W signal are increased, the brightness of the LED lamp is increased. When the duty cycle of the PWM-Y signal and the duty cycle of the PWM-W signal are decreased, the brightness of the LED lamp is decreased.

[0051] The above embodiments mainly describe the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A dual-line LED controller with multi-mode drive, comprising: A power supply interface (11), a power supply module (22), an H-bridge drive circuit (12), a two-wire output interface (13) and a control module (14), The power interface (11) is used to obtain input power, The power module (22) is used to be electrically connected to the power interface (11) to provide power for the operation of the two-wire LED controller. The control module (14) is used to generate a PWM signal for the H-bridge drive circuit (12). The H-bridge driving circuit (12) is used to generate dual-line LED driving power according to PWM signal conversion and provide it to the dual-line output interface (13), and is characterized in that it also includes: Three-wire input interface (15) for connecting three-wire LED drive power A collection unit (16) for converting the three-line LED driving power into a first control variable and providing the first control variable to the control module (14); A parameter input unit (17), used for generating a second control variable according to a user operation and providing the second control variable to the control module (14); a wireless input unit (18), configured to generate a third control variable according to the wireless signal and provide the third control variable to the control module (14); and A mode configuration unit (19) is used to set an enable signal to the control module (14) to activate one of the first control variable, the second control variable and the third control variable, and to generate a two-wire PWM signal according to the first control variable, the second control variable or the third control variable.

2. A multi-mode driven two-line LED controller as claimed in claim 1, characterized in that: The mode configuration unit (19) is a single-link three-way switch, the single-link three-way switch is configured with a fixed end, a first control end, a second control end and a third control end, the control module (14) is configured with a first enable end, a second enable end and a third enable end, the fixed end is grounded, the first control end, the second control end and the third control end are electrically connected to the first enable end, the second enable end and the third enable end of the control module (14) in sequence, so that when the fixed end is respectively connected to the first enable end, the second enable end and the third enable end, the control module (14) correspondingly activates the first control variable, the second control variable and the third control variable.

3. A multi-mode driven two-line LED controller as claimed in claim 1, characterized in that: The parameter input unit (17) is a potentiometer, the fixed end of the potentiometer is electrically connected to the power module (22), and the sliding end of the potentiometer is electrically connected to the control module (14).

4. A multi-mode driven two-wire LED controller as claimed in claim 1, characterized in that: The acquisition unit (16) is an EL063X chip.

5. A multi-mode driven two-wire LED controller as claimed in claim 1, characterized in that: The wireless input unit (18) is a BT3L Bluetooth module.

6. A multi-mode driven two-wire LED controller as claimed in claim 1, characterized in that: The H-bridge driving circuit (12) is composed of an upper bridge arm and a lower bridge arm, wherein the output end of the upper bridge arm is electrically connected to one end of a two-wire output interface (13), and the output end of the lower bridge arm is electrically connected to the other end of the two-wire output interface (13).

7. A multi-mode driven two-wire LED controller as claimed in claim 6, characterized in that: It also includes a drive conversion unit (20), the output end of which is electrically connected to the upper bridge arm and the lower bridge arm of the H-bridge drive circuit (12) respectively, so as to drive the upper bridge arm and the lower bridge arm to operate respectively according to the double-line PWM signal.

8. A multi-mode driven two-wire LED controller as claimed in claim 7, characterized in that: It also includes a driving protection unit (21) for acquiring a two-line PWM signal, providing the two-line PWM signal to the driving conversion unit (20), and providing the PWM signal to the driving conversion unit (20) when the driving conversion unit (20) operates abnormally.

9. A multi-mode driven two-wire LED controller as claimed in claim 1, characterized in that: The power interface (11) is adapted to a voltage of 5V to 60V, the first input end of the power module (22) is a voltage of 10V, and the second output end of the power module (22) is a voltage of 3.3V.

10. An LED lamp, comprising the multi-mode driven two-wire LED controller according to any one of claims 1 to 9.

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