CN216673359U - Constant-current dimming system for desk lamp - Google Patents
Constant-current dimming system for desk lamp Download PDFInfo
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- CN216673359U CN216673359U CN202220121068.5U CN202220121068U CN216673359U CN 216673359 U CN216673359 U CN 216673359U CN 202220121068 U CN202220121068 U CN 202220121068U CN 216673359 U CN216673359 U CN 216673359U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model discloses a constant-current dimming system for a desk lamp, which relates to the field of desk lamp control circuits and comprises a main control unit, a touch input module, a key lamp panel display circuit, a constant-current control circuit, a lighting and extinguishing control circuit and a power supply circuit, wherein the touch input module is electrically connected with a signal output port of the main control unit, the constant-current control circuit and the lighting and extinguishing control circuit are electrically connected with the signal output port of the main control unit, the signal output ports of the constant-current control circuit and the lighting and extinguishing control circuit are electrically connected with a lamp strip, the key lamp panel display circuit is electrically connected with the signal output port of the main control unit, and the power supply circuit is used for supplying power to a dimming system. The utility model has the advantages that: according to the utility model, the PWM signal is converted into continuous linear variable current through the built-in constant current control circuit, the non-stroboscopic brightness adjustment of light is realized, and the eye protection grade of the desk lamp is improved.
Description
Technical Field
The utility model relates to the field of desk lamp control circuits, in particular to a constant-current dimming system for a desk lamp.
Background
The desk lamp generally refers to an electric lamp with a base and placed on a desk, but with the progress of science and technology, the appearance and the shape of the desk lamp are continuously developed, and the magnetic type desk lamp capable of being adsorbed at any position gradually appears, so that the desk lamp is small, exquisite and convenient to carry. The desk lamp mainly has the functions of illumination, and is convenient for reading, learning, working and the like.
Along with the development of electricity, a touch control brightness adjustable circuit is mostly adopted for circuit control of the desk lamp, the working principle of the desk lamp is that an induction electrode plate is installed, when a human body touches the induction electrode plate, a touch signal is sent to a touch input module through pulse direct current to generate a pulse signal, the pulse signal is transmitted to a main control unit through the touch input module, the current of a lamp bar is adjusted through an internal circuit according to the input of the induction electrode plate touched by the human body, and then stepless adjustment of the brightness of the desk lamp is achieved.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a constant-current dimming system for a desk lamp, which can effectively receive input signals through a touch input module, convert the input signals into PWM (pulse width modulation) signals through a main control unit, transmit the PWM signals to a constant-current control circuit, convert the PWM signals into continuous linear variable current through components such as a constant-current chip, an inductor and the like of the constant-current control circuit and output the continuous linear variable current, and realize the effect of adjusting the brightness of the desk lamp without stroboscopic effect.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a constant-current dimming system for a desk lamp comprises a main control unit, a touch input module, a key lamp panel display circuit, a constant-current control circuit, a light and extinguish control circuit and a power supply circuit, wherein the touch input module is electrically connected with a signal output port of the main control unit, the touch input module is used for converting received control information into an electric signal input value, the main control unit is electrically connected with the signal output port of the main control unit, the constant-current control circuit and the light and extinguish control circuit are electrically connected with a lamp strip, the constant-current control circuit is used for receiving a PWM (pulse width modulation) signal output by the main control unit and converting the PWM signal into a continuous linear variable current to output and control the brightness of the lamp strip, the light and extinguish control circuit is used for receiving a control signal output by the main control unit and controlling the light and extinguish, and the key lamp panel display circuit is electrically connected with the signal output port of the main control unit, the key lamp panel display circuit is electrically connected with the key lamp panel, the key lamp panel display circuit is used for synchronizing the on-off change of the key lamp panel according to the operation change of the touch input module, and the power supply circuit is used for supplying power to the dimming system.
Preferably, the main control unit is integrated with an MCU main control chip and a program downloading circuit, the program downloading circuit is electrically connected to the MCU main control chip, and the program downloading circuit is used to burn the programmed logic program into the MCU chip.
Preferably, the model of the MCU master control chip is YX23F 01C.
Preferably, the model of the main chip of the constant-current dimming circuit is XL3003E 1.
Preferably, the model of the main chip of the power supply circuit is 78L05, and the power supply circuit is used for converting an input DC 12V voltage into a DC 5V voltage for output.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, the PWM control signal transmitted by the main control unit can be effectively converted into the PWM signal through the arranged constant current control circuit, and the PWM signal is transmitted to the constant current control circuit, and is converted into the continuous linear variable current through the constant current chip, the inductor and other components of the constant current control circuit and is output to the lamp strip, so that the effect of no stroboscopic brightness adjustment of the light is realized, meanwhile, the key lamp panel display circuit is arranged for displaying the grade of the brightness of the lamp strip, the current brightness of the light can be effectively prompted to a user, the quantized standard of the brightness of the light is provided when the brightness of the light is adjusted by the user, and the adjustment is convenient for the user.
Drawings
FIG. 1 is a block circuit diagram of the present invention;
FIG. 2 is a circuit diagram of the MCU master control chip of the present invention;
fig. 3 is a circuit diagram of a constant current control circuit of the present invention;
FIG. 4 is a circuit diagram of the light and dark control circuit of the present invention;
FIG. 5 is a circuit diagram of a key light panel display circuit of the present invention;
FIG. 6 is a circuit diagram of a program download circuit of the present invention;
fig. 7 is a circuit diagram of the power supply circuit of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.
As shown in fig. 1-7, a constant current dimming system for a desk lamp comprises a main control unit, a touch input module, a key panel display circuit, a constant current control circuit, a light and dark control circuit and a power supply circuit, wherein the touch input module is electrically connected with a signal output port of the main control unit, the touch input module is used for converting received control information into an electric signal input value, the main control unit is used for receiving the received control information and converting the control information into an electric signal, the constant current control circuit and the light and dark control circuit are electrically connected with the signal output port of the main control unit, the signal output ports of the constant current control circuit and the light and dark control circuit are electrically connected with a light bar, the constant current control circuit is used for receiving a PWM signal output by the main control unit and converting the PWM signal into a continuous linear variable current to output control the brightness of the light bar, the light and dark control circuit is used for receiving a control signal output by the main control unit and controlling the light bar to light and dark control, and dark control circuit is electrically connected with the signal output port of the main control unit, the key lamp panel display circuit is electrically connected with the key lamp panel, the key lamp panel display circuit is used for changing according to the operation of the touch input module, the on-off of the synchronous key lamp panel changes, the current light brightness of a user can be effectively prompted, a convenient user has a quantized standard for the light brightness when the light brightness is adjusted, the convenient user uses and adjusts the lamp, and the power supply circuit is used for supplying power to the dimming system.
The main control unit is integrated with an MCU main control chip and a program downloading circuit, the program downloading circuit is electrically connected with the MCU main control chip, the program downloading circuit is used for burning a programmed logic program into the MCU chip, the model of the MCU main control chip is YX23F01C, the MCU main control chip realizes all functions of a product according to programmed software logic, and meanwhile, the MCU main control chip can receive an input instruction of an external touch key signal and control different functions to run.
The model of the main chip of the constant-current dimming circuit is XL3003E1, the constant-current control circuit can effectively convert PWM control signals transmitted by the main control unit into PWM signals and transmit the PWM signals to the constant-current control circuit, and the PWM signals are converted into continuous linear variable current through the constant-current chip, the inductor and other components of the constant-current control circuit and output to the light bar, so that the effect of adjusting the brightness of the light without stroboflash is achieved.
The model of the main chip of the power supply circuit is 78L05, and the power supply circuit is used for converting the input DC 12V voltage into DC 5V voltage for output.
In summary, the utility model has the advantages that: the utility model provides a novel constant-current dimming system for a desk lamp, which is characterized in that a PWM signal is converted into continuous linear variable current through a built-in constant-current control circuit, the non-stroboscopic brightness adjustment of light is realized, and the eye protection grade of the desk lamp is improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a constant current dimming system for desk lamp, includes main control unit, touch input module, button lamp plate display circuit, constant current control circuit, control circuit and power supply circuit that goes on and off, its characterized in that: the touch input module is electrically connected with a signal output port of the main control unit, the touch input module is used for converting received control information into an electric signal input value main control unit, the constant current control circuit and the on-off control circuit are both electrically connected with the signal output port of the main control unit, the signal output ports of the constant current control circuit and the on-off control circuit are both electrically connected with the lamp strip, the constant current control circuit is used for receiving a PWM signal output by the main control unit and converting the PWM signal into continuous linear variable current to output and control the brightness of the lamp strip, the on-off control circuit is used for receiving a control signal output by the main control unit and controlling the on-off of the lamp strip, the key lamp panel display circuit is electrically connected with the signal output port of the main control unit, the key lamp panel display circuit is electrically connected with the key lamp panel, and the key lamp panel display circuit is used for changing according to the operation of the touch input module, the on-off of synchronous button lamp plate changes, supply circuit is used for supplying power to the dimming system.
2. The constant-current dimming system for a desk lamp according to claim 1, wherein: the main control unit is integrated with an MCU main control chip and a program downloading circuit, the program downloading circuit is electrically connected with the MCU main control chip, and the program downloading circuit is used for burning a programmed logic program into the MCU chip.
3. The constant-current dimming system for the desk lamp according to claim 2, wherein: the MCU master control chip is YX23F01C in model number.
4. A constant current dimming system for a desk lamp according to claim 3, wherein: the model of the main chip of the constant-current dimming circuit is XL3003E 1.
5. The constant-current dimming system for the desk lamp according to claim 4, wherein: the model of the main chip of the power supply circuit is 78L05, and the power supply circuit is used for converting an input DC 12V voltage into a DC 5V voltage for output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220121068.5U CN216673359U (en) | 2022-01-18 | 2022-01-18 | Constant-current dimming system for desk lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220121068.5U CN216673359U (en) | 2022-01-18 | 2022-01-18 | Constant-current dimming system for desk lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216673359U true CN216673359U (en) | 2022-06-03 |
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ID=81762748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220121068.5U Active CN216673359U (en) | 2022-01-18 | 2022-01-18 | Constant-current dimming system for desk lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216673359U (en) |
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2022
- 2022-01-18 CN CN202220121068.5U patent/CN216673359U/en active Active
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