CN211982187U - LED drive circuit of fan - Google Patents
LED drive circuit of fan Download PDFInfo
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- CN211982187U CN211982187U CN202021064391.0U CN202021064391U CN211982187U CN 211982187 U CN211982187 U CN 211982187U CN 202021064391 U CN202021064391 U CN 202021064391U CN 211982187 U CN211982187 U CN 211982187U
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- control
- circuit
- control unit
- load
- limiting resistor
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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 relates to a LED drive circuit of fan, the technical field of load control circuit has been related to, the problem of motor control circuit pilot lamp luminance display and other pilot lamps difference has been solved, including the control unit, load control circuit, a power supply circuit for the circuit is whole to provide the power, still include a plurality of control pilot lamps, a plurality of control button, the control unit includes a plurality of input/output pins of being connected with a plurality of control pilot lamps respectively, at least one control button is connected with one of them input/output pin, the common series connection of a plurality of control pilot lamps has first current-limiting resistor, first current-limiting resistor is connected with the control unit. The utility model discloses an effectively solved because the resistance difference of first current limiting resistor leads to the uneven problem of control pilot lamp luminance, the illumination of pilot lamp is more stable, simultaneously save material more, the cost is lower.
Description
Technical Field
The utility model belongs to the technical field of fan control circuit's technique and specifically relates to a LED drive circuit of fan is related to.
Background
Along with the development of industry, people increasingly demand the quantity of electromechanical control circuit electric products, and increasingly stringent requirements are also put forward on the types, performance and reliability of the products, nowadays, electric control circuits usually have the functions of control, signal indication and chain lamps, and can ensure the stability and reliability of a control system, wherein a motor control circuit in a household appliance is an integrated circuit which controls a motor to work according to the set direction, speed, angle and corresponding time through active work.
The prior Chinese patent with the publication number of CN203933474U proposes a direct current motor control circuit structure, which comprises a single chip microcomputer control circuit, a motor control circuit, a human interaction control circuit and a power supply circuit, wherein the single chip microcomputer control circuit is connected with a program downloading and debugging circuit through pins, a speed acquisition interface circuit, a single chip microcomputer crystal oscillator circuit, a single chip microcomputer power supply filter circuit, a single chip microcomputer reset circuit, an upper computer communication circuit and a single chip microcomputer working state indicating circuit, the single chip microcomputer working indicating circuit comprises a resistor R5 and an indicator lamp D2, one end of the resistor R5 is connected with the single chip microcomputer control circuit, the other end of the resistor R5 is connected with an indicator lamp D2, and only the other end of the indicator lamp D2 is connected with the output end of the power.
The above prior art solutions have the following drawbacks: the motor control circuit adopts a plurality of pilot lamps to realize the demonstration of motor control circuit's different states, and the public end that singlechip control circuit and pilot lamp are connected is connected with the control button, when pressing one of them control button, the resistance of being connected with its public end and the electric current size that the pilot lamp passes through produce the change, lead to this pilot lamp luminance to show and produce the difference with other pilot lamps, influence the instruction function of pilot lamp.
SUMMERY OF THE UTILITY MODEL
The LED drive circuit of the fan comprises a plurality of LED drive circuits, wherein the LED drive circuits are arranged on the LED drive circuits, and the LED drive circuits are arranged on the LED drive circuits.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a LED drive circuit of fan, includes the control unit, load control circuit, is used for providing the power supply circuit of power for the circuit is whole, still includes a plurality of control pilot lamps, a plurality of control button, the control unit includes respectively with a plurality of input/output pin, at least one that the control button is connected with one of them input/output pin is connected, presses during the control button, rather than connecting in same on the input/output pin control pilot lamp is bright, and is a plurality of the common series connection of control pilot lamp has first current-limiting resistor, first current-limiting resistor with the control unit is connected.
By adopting the technical scheme, in the application process, the power circuit provides power, the control unit outputs a control signal to the load control circuit, the load control circuit controls the load to operate, when the control key is pressed down in the working process, the control unit and the input/output pin of the control key receive a trigger signal, the control unit transmits a signal to the load control circuit, the load is controlled by the load control circuit to perform preset action, meanwhile, the control indicator lamp connected with the control key on the same input/output pin and the first current-limiting resistor generate electric signals, and the corresponding control indicator lamp is on, the problem of uneven brightness of the control indicator lamp is caused, the indicator lamp is more stably lighted, meanwhile, the material is saved, and the cost is lower.
The present invention may be further configured in a preferred embodiment as: the COM pin of the control unit is connected with the first current-limiting resistor, and the control unit dynamically drives the control indicator lamps by scanning the input and output pins and the COM pin.
By adopting the technical scheme, the COM is adopted to scan the control indicating lamps, so that the brightness of the control indicating lamps is more uniform.
The present invention may be further configured in a preferred embodiment as: the load control circuit comprises a plurality of groups of second current-limiting resistors and trigger switches which are arranged in series, the second current-limiting resistors are connected to the control pins of the control unit respectively, and the trigger switches are connected to different control ends of the load respectively.
By adopting the technical scheme, the control electric signal output by the control pin of the control unit is guided to the trigger switch through the second current-limiting resistor, and the trigger switch is switched on, so that the control end of the load is triggered, and the load is controlled to perform corresponding action
The present invention may be further configured in a preferred embodiment as: the trigger switch adopts a bidirectional thyristor, the T1 pole of the bidirectional thyristor is grounded, the T2 pole of the bidirectional thyristor is connected to the control end of the load, and the control pole of the bidirectional thyristor is connected with the control unit.
By adopting the technical scheme, the bidirectional controllable silicon has stable performance and stable control.
The present invention may be further configured in a preferred embodiment as: the remote control system also comprises an infrared receiving unit, wherein the infrared receiving unit is used for receiving the infrared remote control signal.
By adopting the technical scheme, the remote control function of the load is realized by being convenient to be matched with the infrared emission control circuit outside the circuit.
The present invention may be further configured in a preferred embodiment as: the infrared receiving unit is used for receiving infrared signals and transmitting the infrared signals to the control unit.
By adopting the technical scheme, the control unit controls the infrared power supply unit to supply power for the infrared receiving unit, so that the structure is simple, the integration level is better, and the resource utilization is more sufficient.
The present invention may be further configured in a preferred embodiment as: still include buzzer circuit, buzzer circuit include buzzer and with the third current-limiting resistor that buzzer is connected, buzzer with the buzzer control pin of the control unit is connected, the other end of third current-limiting resistor inserts +5V DC power supply.
By adopting the technical scheme, when the circuit control signal is abnormal, the control unit outputs the control signal to the buzzer circuit to control the buzzer to sound, so that the automatic alarm function is realized.
Alarm the present invention may be further configured in a preferred example to: the control functions of the control keys are on/off, gear switching and shaking.
To sum up, the utility model discloses a following at least one kind benefits technological effect:
1. the control indicating lamps are connected in parallel and then are connected in series with the first current-limiting resistor together, and at the moment when a control key connected with one input/output pin is pressed down, the difference between the current values of the two ends of the control indicating lamp connected with the input/output pin and the current values of the control indicating lamps on other branches is smaller, so that the problem of uneven brightness of the control indicating lamp due to different resistance values of the current-limiting resistors is effectively solved, meanwhile, the materials are saved, and the cost is lower;
2. and the mode of scanning the COM port is adopted, so that the brightness display of the control indicating lamps is more stable and uniform.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Reference numerals: 1. a control unit; 2. a load control circuit; 3. a power supply circuit; 4. controlling an indicator light; 5. a control key; 6. a first current limiting resistor; 7. a second current limiting resistor; 8. a trigger switch; 9. an infrared receiving unit; 10. an infrared power supply unit; 11. a buzzer circuit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a LED driving circuit of fan, including the control unit 1, load control circuit 2, be used for providing the power supply circuit 3 of power for the circuit is whole.
The control unit 1 adopts a chip with a model number of HT45R17, the VDD end of the control unit 1 is connected with a +5V direct current power supply, the VSS end is grounded, the control unit further comprises a plurality of control indicator lamps 4 and a plurality of control keys 5, the scheme adopts 6 control indicator lamps 4 and 3 control keys 5, the control indicator lamps 4 adopt LED lamps, the control functions of the control keys 5 are on/off, gear switching and shaking, the 6 control indicator lamps 4 are respectively connected with 6 input and output pins (SEG 1-SEG 6) of the control unit 1, and the 3 control keys 5 are respectively connected with 3 input and output pins (SEG 1, SEG2 and SEG 4). When the control key 5 is pressed, a control function designated for the load is performed, and the control indicator lamp 4 connected to the same input/output pin is turned on, so that the control function corresponding to the key is displayed.
A plurality of control pilot lamps 4 are connected with a first current-limiting resistor 6 in series, the COM pin of the control unit 1 is connected with the first current-limiting resistor 6, and the control unit 1 dynamically drives the plurality of control pilot lamps 4 by scanning a plurality of input and output pins and the COM pin. The COM is adopted to scan the control indicator lamps 4, so that the brightness of the control indicator lamps 4 is more uniform.
The load control circuit 2 comprises a plurality of groups of second current-limiting resistors 7 and trigger switches 8 which are arranged in series, four groups of the second current-limiting resistors 7 are arranged, the four second current-limiting resistors 7 are respectively connected to a P _ HIGH pin, a P _ MED pin, a P _ LOW pin and a P _ SW pin of the control unit 1, the trigger switches 8 are respectively connected to a plurality of different control ends of the load, the trigger switches 8 adopt bidirectional thyristors, T1 poles of the bidirectional thyristors are grounded, T2 poles of the bidirectional thyristors are connected to the control ends of the load, and the control poles of the bidirectional thyristors are connected with the control unit 1. The performance of the bidirectional thyristor is stable, the control electrical signal output by the control pin of the control unit 1 is guided to the bidirectional thyristor by the second current-limiting resistor 7, and the bidirectional thyristor is conducted, so that the control end of the trigger load controls the load to perform corresponding action.
The infrared power supply device is characterized by further comprising an infrared receiving unit 9 and an infrared power supply unit 10, the infrared receiving unit 9 comprises an infrared receiver and a first row of seats used for being connected with power supply row pins, the infrared power supply unit 10 comprises a second row of seats used for being connected with the power supply row pins, 1 pin of each second row of seats is connected with the P _ IR pin of the control unit 1 through a fourth current-limiting resistor, the connecting point of the 1 pin and the P _ IR pin is connected with a +5V power supply through a pull-up resistor, 3 pins and 2 pins of the second row of seats are respectively connected with the +5V power supply and the ground, an electrolytic capacitor and a first filter capacitor are connected between the 2 pins and the 3 pins in parallel, and the connecting point of the 2 pin and the 1 pin and the fourth current-limiting resistor is connected. The infrared power supply unit 10 is used for supplying power to the infrared receiving unit 9, and the infrared receiving unit 9 is used for receiving infrared remote control signals, so that the infrared remote control unit can be conveniently matched with an infrared emission control circuit outside the circuit to realize the remote control function of the load.
Still include buzzer circuit 11, buzzer circuit 11 includes buzzer and the third current-limiting resistor who is connected with buzzer, and buzzer is connected with the buzzer control pin of control unit 1, and +5V DC power supply is inserted to the other end of third current-limiting resistor. When the circuit control signal is abnormal, the control unit 1 outputs the control signal to the buzzer circuit 11 to control the buzzer to sound, so as to realize the automatic alarm function.
The implementation principle of the embodiment is as follows:
in the application process, the power circuit 3 provides power, the control unit 1 outputs a control signal to the load control circuit 2, the load control circuit 2 controls the load operation, when the control key 5 is pressed down in the working process, the control unit 1 and the input/output pin of the control key 5 receive a trigger signal, the control unit 1 transmits a signal to the load control circuit 2, the load control circuit 2 controls the load to carry out preset action, meanwhile, the control indicator lamp 4 connected with the control key 5 on the same input/output pin and the first current-limiting resistor 6 generate electric signals, the corresponding control indicator lamp 4 is on, the utility model discloses a plurality of control indicator lamps 4 are connected in series with the first current-limiting resistor 6 after being connected in parallel, the manufacturing cost is saved from the hardware, the problem of uneven brightness of the control indicator lamp 4 is solved by scanning the COM port, the brightness display of the plurality of indicator lamps is more stable.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The LED driving circuit of the fan comprises a control unit (1), a load control circuit (2) and a power supply circuit (3) used for providing power for the whole circuit, and is characterized by further comprising a plurality of control indicator lamps (4) and a plurality of control keys (5), wherein the control unit (1) comprises a plurality of input and output pins respectively connected with the plurality of control indicator lamps (4), at least one control key (5) is connected with one of the input and output pins, the control key (5) is used for controlling the control indicator lamps (4) connected with the same input and output pin to be turned on, the control indicator lamps (4) are connected with a first current limiting resistor (6) in series, and the first current limiting resistor (6) is connected with the control unit (1).
2. The LED driving circuit of the fan according to claim 1, wherein a COM pin of the control unit (1) is connected to the first current limiting resistor (6), and the control unit (1) dynamically drives the control indicator lamps (4) by scanning a plurality of input and output pins and the COM pin.
3. The LED driving circuit of a fan according to claim 2, wherein the load control circuit (2) comprises a plurality of sets of second current limiting resistors (7) and trigger switches (8) connected in series, a plurality of the second current limiting resistors (7) are respectively connected to a plurality of control pins of the control unit (1), and a plurality of the trigger switches (8) are respectively connected to a plurality of different control terminals of the load.
4. The LED driving circuit of a fan as claimed in claim 3, wherein the trigger switch (8) is a triac, the T1 pole of the triac is grounded, the T2 pole of the triac is connected to the control terminal of the load, and the control pole of the triac is connected to the control unit (1).
5. The LED driving circuit of the fan according to claim 1, further comprising an infrared receiving unit (9), wherein the infrared receiving unit (9) is configured to receive an infrared remote control signal to implement a remote control function of the load.
6. LED driving circuit of a fan according to claim 5, characterized in that it further comprises an infrared power supply unit (10) connected to the control unit (1).
7. The LED driving circuit of the fan according to claim 1, further comprising a buzzer circuit (11), wherein the buzzer circuit (11) comprises a buzzer and a third current limiting resistor connected to the buzzer, the buzzer is connected to a buzzer control pin of the control unit (1), and the other end of the third current limiting resistor is connected to a +5V DC power supply.
8. The LED driving circuit of the fan according to claim 1, wherein the control functions of the plurality of control keys (5) are on/off, gear shifting and shaking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021064391.0U CN211982187U (en) | 2020-06-10 | 2020-06-10 | LED drive circuit of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021064391.0U CN211982187U (en) | 2020-06-10 | 2020-06-10 | LED drive circuit of fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211982187U true CN211982187U (en) | 2020-11-20 |
Family
ID=73371617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021064391.0U Active CN211982187U (en) | 2020-06-10 | 2020-06-10 | LED drive circuit of fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211982187U (en) |
-
2020
- 2020-06-10 CN CN202021064391.0U patent/CN211982187U/en active Active
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