LED lamp, LED lamp brightness adjustment system and method

Abstract

The embodiment of the present invention provides an LED lamp, an LED lamp brightness adjustment system and method, wherein the LED lamp comprises: an LED light source module; a power-on detection module, which is used to send a power-on signal when the LED lamp is powered on; a counting module, which is connected to the power-on detection module, and is used to determine the real-time cumulative power-on times when the power-on signal is received; a PWM output module, which is connected to the counting module, and is built with a corresponding relationship table between the cumulative power-on times and the PWM signal duty cycle, and is used to determine and output a PWM signal with a corresponding duty cycle according to the determined real-time cumulative power-on times and the corresponding relationship table between the cumulative power-on times and the PWM signal duty cycle; a driving module, which is built with a corresponding relationship table between the PWM signal duty cycle and the driving current, and is used to determine the output of a predetermined driving current to the LED light source module according to the duty cycle of the PWM signal and the corresponding relationship table between the PWM signal duty cycle and the driving current. This embodiment effectively adjusts the brightness of the LED lamp, reduces the wiring difficulty, and improves the brightness adjustment efficiency.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of LED lamp control equipment, and in particular to an LED lamp, and an LED lamp brightness adjustment system and method. Background Art

[0002] The existing LED lamp brightness adjustment system with grayscale adjustment for landscape lighting currently mainly uses traditional control systems to adjust the grayscale of lamps, such as serial control or DMX512 signal transmission control, but in specific applications, since the brightness adjustment system needs to transmit signals with each LED lamp, the signal transmission line is complicated. When a LED lamp fails, it is difficult to repair it. Moreover, when the LED lamps are cascaded one by one, the brightness adjustment signal emitted by the brightness adjustment system will gradually attenuate during the transmission process, ultimately resulting in low brightness adjustment efficiency. Summary of the invention

[0003] The technical problem to be solved by the embodiments of the present invention is to provide an LED lamp that can effectively reduce the difficulty of wiring and improve the efficiency of brightness adjustment.

[0004] A further technical problem to be solved by the embodiments of the present invention is to provide a LED lamp brightness adjustment system, which can effectively reduce the difficulty of wiring and improve the brightness adjustment efficiency.

[0005] Another technical problem to be solved by the embodiments of the present invention is to provide a method for adjusting the brightness of an LED lamp, which can effectively reduce the difficulty of wiring and improve the efficiency of brightness adjustment.

[0006] In order to solve the above technical problems, the embodiment of the present invention first provides the following technical solution: an LED lamp, comprising:

[0007] LED light source module;

[0008] A power-on detection module is used to send a power-on signal when the LED lamp is powered on;

[0009] A counting module, connected to the power-on detection module, for determining the real-time cumulative power-on times upon receiving the power-on signal;

[0010] A PWM output module, connected to the counting module, having a built-in correspondence table between the cumulative number of power-on times and the duty cycle of the PWM signal, for determining and outputting a PWM signal of a corresponding duty cycle according to the real-time cumulative number of power-on times determined by the counting module and the correspondence table between the cumulative number of power-on times and the duty cycle of the PWM signal;

[0011] The driving module is connected to the PWM output module and the LED light source module, and has a built-in PWM signal duty cycle and driving current correspondence table, and is used to determine and output a corresponding predetermined driving current to the LED light source module according to the duty cycle of the PWM signal output by the PWM output module and the PWM signal duty cycle and driving current correspondence table.

[0012] Furthermore, the counting module includes:

[0013] A storage unit, used to pre-store an upper limit value of the cumulative number of power-on times;

[0014] An accumulation unit, used for successively accumulating and determining the real-time cumulative power-on times when receiving the power-on signal;

[0015] The clearing unit is connected to the accumulating unit and the storage unit respectively, and is used for reading the real-time accumulated power-on times in real time and clearing the real-time accumulated power-on times when the real-time accumulated power-on times increases to the upper limit value.

[0016] Furthermore, the counting module also includes a duration detection unit with a built-in preset duration, which is used to detect the time difference between each time the power-on signal is received and the last time the power-on signal was received, and when the receiving time difference is less than the preset duration, control the accumulation unit to accumulate and determine the real-time cumulative power-on times.

[0017] On the other hand, in order to further solve the above-mentioned technical problems, an embodiment of the present invention provides the following technical solutions: an LED lamp brightness adjustment system, comprising an LED lamp, a power supply device for powering the LED lamp, and a control device connected between the LED lamp and the power supply device for restarting the power supply line once after a predetermined time interval, and the LED lamp is such as any of the LED lamps described above.

[0018] Furthermore, the control device is a time relay or a timing switch.

[0019] Furthermore, the system also includes a remote user terminal that is communicatively connected to the control device and is used to send a brightness adjustment signal to correspondingly control the working state of the control device.

[0020] On the other hand, in order to further solve the above technical problems, the embodiment of the present invention provides the following technical solutions: a method for adjusting the brightness of an LED lamp, comprising the following steps:

[0021] The LED lamp is powered on, generating a power-on signal;

[0022] determining a real-time cumulative number of power-on times upon receiving the power-on signal;

[0023] Determine and output a PWM signal with a corresponding duty cycle according to the real-time cumulative power-on times and the corresponding relationship table between the cumulative power-on times and the PWM signal duty cycle;

[0024] According to the duty cycle of the PWM signal and the corresponding relationship table between the duty cycle of the PWM signal and the driving current, a driving current of a corresponding predetermined magnitude is determined and output to the LED light source module.

[0025] Further, determining the real-time cumulative number of power-on times upon receiving the power-on signal includes:

[0026] Pre-store the upper limit value of the cumulative power-on times;

[0027] When receiving the power-on signal, successively accumulating to determine the real-time cumulative power-on times;

[0028] The real-time accumulated power-on times are read in real time and the real-time accumulated power-on times are cleared to zero when the real-time accumulated power-on times increase to the upper limit value.

[0029] Furthermore, the step of successively accumulating and determining the real-time cumulative power-on times when the power-on signal is received specifically refers to detecting the time difference between each time the power-on signal is received and the last time the power-on signal was received, and controlling the accumulation unit to accumulate and determine the real-time cumulative power-on times when the receiving time difference is less than a predetermined duration.

[0030] After adopting the above technical scheme, the embodiment of the present invention has at least the following beneficial effects: the embodiment of the present invention sends a power-on signal when the LED lamp is powered on through the power-on detection module arranged inside the LED lamp, determines the real-time cumulative power-on times through the counting module after receiving the power-on signal, and the PWM output module determines and outputs the PWM signal of the corresponding duty cycle according to the real-time cumulative power-on times determined by the counting module and the correspondence table between the cumulative power-on times and the PWM signal duty cycle, and finally the driving module determines and outputs the corresponding predetermined driving current to the LED light source module according to the duty cycle of the PWM signal output by the PWM output module and the correspondence table between the PWM signal duty cycle and the driving current, which can effectively adjust the brightness of the LED lamp, and can effectively reduce the wiring difficulty and improve the brightness adjustment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The following is a principle block diagram of an optional embodiment of the LED lamp of the present invention.

[0032] Figure 2 This is a principle block diagram of a counting module of an optional embodiment of the LED lamp of the present invention.

[0033] Figure 3 The schematic diagram is a functional block diagram of an optional embodiment of the LED lamp brightness adjustment system of the present invention.

[0034] Figure 4 This is a principle block diagram of another optional embodiment of the LED lamp brightness adjustment system of the present invention.

[0035] Figure 5 The following is a flowchart of an optional embodiment of the method for adjusting the brightness of an LED lamp of the present invention.

[0036] Figure 6 This is a specific flow chart of step S2 of an optional embodiment of the method for adjusting the brightness of an LED lamp of the present invention. DETAILED DESCRIPTION

[0037] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present invention and are not intended to limit the present invention. In addition, the embodiments and features in the embodiments of the present application may be combined with each other without conflict.

[0038] like Figure 1 As shown, an optional embodiment of the present invention provides an LED lamp 1, comprising:

[0039] LED light source module 10;

[0040] A power-on detection module 12, used to send a power-on signal when the LED lamp 1 is powered on;

[0041] The counting module 14 is connected to the power-on detection module 12 and is used to determine the real-time cumulative power-on times when receiving the power-on signal;

[0042] A PWM output module 16, connected to the counting module 14, having a built-in correspondence table between the cumulative number of power-on times and the duty cycle of the PWM signal, for determining and outputting a PWM signal of a corresponding duty cycle according to the real-time cumulative number of power-on times determined by the counting module 14 and the correspondence table between the cumulative number of power-on times and the duty cycle of the PWM signal;

[0043] The driving module 18 is connected to the PWM output module 16 and the LED light source module 10, and has a built-in PWM signal duty cycle and driving current correspondence table, which is used to determine and output a corresponding predetermined driving current to the LED light source module 10 based on the duty cycle of the PWM signal output by the PWM output module 16 and the PWM signal duty cycle and driving current correspondence table.

[0044] In the embodiment of the present invention, a power-on detection module 12 is arranged inside the LED lamp 1 to send a power-on signal when the LED lamp 1 is powered on. The counting module 14 determines the real-time cumulative power-on times after receiving the power-on signal. The PWM output module 16 determines and outputs a PWM signal with a corresponding duty cycle according to the real-time cumulative power-on times determined by the counting module 14 and the correspondence table between the cumulative power-on times and the PWM signal duty cycle. Finally, the driving module 18 determines and outputs a corresponding predetermined driving current to the LED light source module 10 according to the duty cycle of the PWM signal output by the PWM output module 16 and the correspondence table between the PWM signal duty cycle and the driving current. This can effectively adjust the brightness of the LED lamp 1, effectively reduce the wiring difficulty, and improve the brightness adjustment efficiency.

[0045] In an optional embodiment of the present invention, Figure 2 As shown, the counting module 14 includes:

[0046] The storage unit 141 is used to pre-store the upper limit value of the cumulative power-on times;

[0047] An accumulation unit 143 is used to accumulate and determine the real-time cumulative power-on times when receiving the power-on signal;

[0048] The clearing unit 145 is connected to the accumulating unit 143 and the storage unit 141, respectively, and is used to read the real-time cumulative power-on times in real time and clear the real-time cumulative power-on times when the real-time cumulative power-on times increase to the upper limit value. This embodiment also sets the clearing unit 145 to clear the real-time cumulative power-on times when the real-time cumulative power-on times increase to the upper limit value, thereby preventing the brightness of the LED lamp 1 from being unlimitedly adjusted with the real-time cumulative power-on times of the counting module 14, and can reset the brightness of the LED lamp 1 when the real-time cumulative power-on times are too large.

[0049] In another optional embodiment of the present invention, Figure 1 As shown, the counting module 14 also includes a time length detection unit 147 with a preset time length, which is used to detect the time difference between each time the power-on signal is received and the last time the power-on signal is received, and to control the accumulating unit 143 to accumulate and determine the real-time cumulative number of power-ons when the reception time difference is less than the preset time length. In this embodiment, the counting module 14 also has a time length detection unit 141 built in, which detects the time difference between each time the power-on signal is received and the last time the power-on signal is received, and controls the accumulating unit to accumulate and determine the real-time cumulative number of power-ons when the reception time difference is less than the preset time length. The application is more convenient, and the brightness of the lamp 1 is prevented from changing when the time difference between two power-ons is long.

[0050] On the other hand, Figure 3As shown, in order to further solve the above technical problems, an embodiment of the present invention provides the following technical solutions: an LED lamp brightness adjustment system 3, comprising an LED lamp 1, a power supply device 5 for powering the LED lamp 1, and a control device 7 connected between the LED lamp 1 and the power supply device 5 for restarting the power supply line once after a predetermined time interval, and the LED lamp 1 is an LED lamp as described in any of the above items.

[0051] In the embodiment of the present invention, the control device 7 is arranged to restart the power supply line between the LED lamp 1 and the power supply device 5 once every predetermined time interval. Every predetermined time interval, the LED lamp 1 will be powered on again, that is, the brightness changes once, thereby improving the brightness adjustment efficiency of the LED lamp and making the wiring very simple.

[0052] In an optional embodiment of the present invention, the control device 7 is a time relay or a timing switch. The control device 7 of this embodiment adopts a time relay or a timing switch, which has a simple structure and does not require manual control, and can realize automatic adjustment of the brightness of the LED lamp, which is very convenient.

[0053] In another optional embodiment of the present invention, Figure 4 As shown, the system further includes a remote user terminal 9 which is communicatively connected with the control device 7 and is used to send a brightness adjustment signal to correspondingly control the working state of the control device 7. In this embodiment, the brightness adjustment signal sent by the remote user terminal 9 controls the working state of the control device 7 correspondingly, thereby realizing repeated power-on of the LED lamp 1, which is very simple and convenient for manual acquisition of the required brightness of the LED lamp 1.

[0054] On the other hand, Figure 5 As shown, an embodiment of the present invention provides a method for adjusting the brightness of an LED lamp, comprising the following steps:

[0055] S1: LED lamp 1 is powered on and generates a power-on signal;

[0056] S2: determining the real-time cumulative power-on times upon receiving the power-on signal;

[0057] S3: determining and outputting a PWM signal with a corresponding duty cycle according to the real-time cumulative power-on times and the corresponding relationship table between the cumulative power-on times and the PWM signal duty cycle;

[0058] S4: Determine and output a driving current of a corresponding predetermined magnitude to the LED light source module 10 according to the duty cycle of the PWM signal and a corresponding relationship table between the duty cycle of the PWM signal and the driving current.

[0059] The embodiment of the present invention uses the above method to send a power-on signal when the LED lamp 1 is powered on, and determines the real-time cumulative power-on times after receiving the power-on signal, determines and outputs a PWM signal with a corresponding duty cycle according to the determined real-time cumulative power-on times and the corresponding relationship table between the cumulative power-on times and the PWM signal duty cycle, and finally determines and outputs a corresponding predetermined driving current to the LED light source module 10 according to the duty cycle of the PWM signal output by the PWM output module 16 and the corresponding relationship table between the PWM signal duty cycle and the driving current, thereby effectively adjusting the brightness of the LED lamp 1, effectively reducing the wiring difficulty, and improving the brightness adjustment efficiency.

[0060] In an optional embodiment of the present invention, Figure 6 As shown, step S2 includes:

[0061] S21: pre-storing the upper limit value of the cumulative number of power-on times;

[0062] S22: when the power-on signal is received, the real-time cumulative power-on times are determined by accumulating them one by one;

[0063] S23: Reading the real-time cumulative power-on times in real time and clearing the real-time cumulative power-on times to zero when the real-time cumulative power-on times increases to the upper limit value.

[0064] This embodiment uses the above method to clear the real-time cumulative power-on times to zero when the real-time cumulative power-on times increases to the upper limit value, thereby preventing the brightness of the LED lamp 1 from being adjusted unlimitedly with the real-time cumulative power-on times. The brightness of the LED lamp 1 can be reset when the real-time cumulative power-on times are too large.

[0065] In another optional embodiment of the present invention, the step of successively accumulating and determining the real-time cumulative number of power-ons when the power-on signal is received specifically refers to detecting the time difference between each time the power-on signal is received and the last time the power-on signal is received, and controlling the accumulating unit to accumulate and determine the real-time cumulative number of power-ons when the receiving time difference is less than a predetermined time length. This embodiment is more convenient to use by detecting the time difference between each time the power-on signal is received and the last time the power-on signal is received, and controlling the accumulating unit to accumulate and determine the real-time cumulative number of power-ons when the receiving time difference is less than a predetermined time length, thereby avoiding changes in the brightness of the lamp 1 when the time difference between two power-ons is long.

[0066] If the functions described in the embodiments of the present invention are implemented in the form of software function modules or units and sold or used as independent products, they can be stored in a storage medium readable by a computing device. Based on this understanding, the part of the embodiment of the present invention that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computing device (which can be a personal computer, a server, a mobile computing device or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes. In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0067] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, which all belong to the protection scope of the present invention.

Claims

1. An LED lamp, comprising an LED light source module, characterized in that: The LED lamp also includes: A power-on detection module is used to send a power-on signal when the LED lamp is powered on; A counting module, connected to the power-on detection module, for determining the real-time cumulative power-on times upon receiving the power-on signal; A PWM output module, connected to the counting module, having a built-in correspondence table between the cumulative number of power-on times and the duty cycle of the PWM signal, for determining and outputting a PWM signal of a corresponding duty cycle according to the real-time cumulative number of power-on times determined by the counting module and the correspondence table between the cumulative number of power-on times and the duty cycle of the PWM signal; A driving module, connected to the PWM output module and the LED light source module, having a built-in table of correspondence between a PWM signal duty cycle and a driving current, for determining and outputting a driving current of a corresponding predetermined magnitude to the LED light source module according to the duty cycle of the PWM signal output by the PWM output module and the table of correspondence between the PWM signal duty cycle and the driving current; The counting module comprises: A storage unit, used to pre-store an upper limit value of the cumulative number of power-on times; An accumulation unit, used for successively accumulating and determining the real-time cumulative power-on times when receiving the power-on signal; The clearing unit is connected to the accumulating unit and the storage unit respectively, and is used for reading the real-time accumulated power-on times in real time and clearing the real-time accumulated power-on times when the real-time accumulated power-on times increases to the upper limit value.

2. The LED lamp according to claim 1, characterized in that: The counting module also includes a time detection unit with a built-in preset time length, which is used to detect the time difference between each time the power-on signal is received and the last time the power-on signal was received, and control the accumulation unit to accumulate and determine the real-time cumulative power-on times when the reception time difference is less than the preset time length.

3. A LED lamp brightness adjustment system, comprising an LED lamp, a power supply device for supplying power to the LED lamp, and a control device connected between the LED lamp and the power supply device for restarting the power supply line once every predetermined time interval, characterized in that: The LED lamp is the LED lamp according to any one of claims 1 to 2.

4. The LED lamp brightness adjustment system according to claim 3, characterized in that: The control device is a time relay or a timing switch.

5. The LED lamp brightness adjustment system according to claim 3, characterized in that: The system also includes a remote user terminal that is communicatively connected to the control device and is used to send a brightness adjustment signal to correspondingly control the working state of the control device.

6. A method for adjusting the brightness of an LED lamp, characterized in that: The following steps are involved: The LED lamp is powered on, generating a power-on signal; Pre-store the upper limit value of the cumulative power-on times; When receiving the power-on signal, successively accumulating to determine the real-time cumulative power-on times; Reading the real-time cumulative power-on times in real time and clearing the real-time cumulative power-on times to zero when the real-time cumulative power-on times increases to the upper limit value; Determine and output a PWM signal with a corresponding duty cycle according to the real-time cumulative power-on times and the corresponding relationship table between the cumulative power-on times and the PWM signal duty cycle; According to the duty cycle of the PWM signal and the corresponding relationship table between the duty cycle of the PWM signal and the driving current, a driving current of a corresponding predetermined magnitude is determined and output to the LED light source module of the LED.

7. The LED lamp brightness adjustment method according to claim 6, characterized in that: The step of successively accumulating and determining the real-time cumulative power-on times when the power-on signal is received specifically refers to detecting the time difference between each time the power-on signal is received and the last time the power-on signal was received, and controlling the accumulating unit to accumulate and determine the real-time cumulative power-on times when the receiving time difference is less than a predetermined duration.

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