CN209731122U - Low pressure brushless DC motor control circuit and low pressure ventilation seat cushion fan - Google Patents
Low pressure brushless DC motor control circuit and low pressure ventilation seat cushion fan Download PDFInfo
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- CN209731122U CN209731122U CN201920133562.1U CN201920133562U CN209731122U CN 209731122 U CN209731122 U CN 209731122U CN 201920133562 U CN201920133562 U CN 201920133562U CN 209731122 U CN209731122 U CN 209731122U
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- regulating signal
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Abstract
The utility model discloses a kind of low pressure brushless DC motor control circuits, can be applied to seat cushion, have the function of rotational speed regulation, with the air quantity blown out in regulating seat cushion.A kind of low pressure brushless DC motor control circuit, including speed-regulating signal circuit, control unit and brshless DC motor, control unit and brushless dc mechatronics are to drive brshless DC motor, speed-regulating signal circuit and control unit access working power by USB interface, filtered speed-regulating signal is conveyed to control unit by speed-regulating signal circuit, and control unit generates the pwm signal of corresponding pulsewidth size according to speed-regulating signal to control the revolving speed speed of brshless DC motor.The invention also discloses the low pressure ventilation seat cushion fans that a kind of application has above-mentioned low pressure brushless DC motor control circuit.
Description
Technical field
The utility model belongs to the technical field of ventilation mattress fan.
Background technique
For the function of meeting seat cushion ventilating cool, has a kind of seat cushion with fan at present.
For example, children's ventilation mattress disclosed in Publication No. CN205970959U, is equipped with centrifugal fan in seat cushion,
Cool breeze can be blown out out of seat cushion at work.
But the fan of this seat cushion only has opening and closing two states, without the function of rotational speed regulation.
Summary of the invention
The purpose of the utility model is to provide a kind of low pressure brushless DC motor control circuits, can be applied to seat cushion,
It has the function of rotational speed regulation, with the air quantity blown out in regulating seat cushion.
In order to solve the above technical problems, the technical solution adopted in the utility model is:
A kind of low pressure brushless DC motor control circuit, including speed-regulating signal circuit, control unit and brshless DC motor,
To drive brshless DC motor, speed-regulating signal circuit and control unit pass through USB for control unit and brushless dc mechatronics
Interface accesses working power, and filtered speed-regulating signal is conveyed to control unit by speed-regulating signal circuit, and control unit is according to tune
Fast signal and generate the pwm signal of corresponding pulsewidth size to control the revolving speed speed of brshless DC motor.
Preferred embodiment on the basis of above scheme and as above scheme: the speed-regulating signal circuit includes adjustable electric
Resistance switch, the switch that resistor body one end of adjustable resistance switch is switched through adjustable resistance are electrically connected with USB interface, and adjustable resistance is opened
The resistor body other end of pass is grounded, and the sliding brush end of adjustable resistance switch is electrically connected with the speed-regulating signal terminals of controller,
The resistor body of adjustable resistance switch also and is connected to capacitor C1, and the sliding brush end that one end of capacitor C2 is switched with adjustable resistance is electrically connected
It connects, the other end ground connection of capacitor C2.
Preferred embodiment on the basis of above scheme and as above scheme: the working power access of described control unit
The switch switched through adjustable resistance is held to be electrically connected with USB interface.
Preferred embodiment on the basis of above scheme and as above scheme: the working power is+5V direct current, institute
The voltage rating for stating brushless direct-current voltage is+5V.
The utility model also provides the low pressure ventilation seat that a kind of application has above-mentioned low pressure brushless DC motor control circuit
Fan is padded, the output end of the brshless DC motor is fixed with fan leaf, the brshless DC motor and fan leaf installation
In shell, air outlet and return air inlet are equipped on shell.
Preferred embodiment on the basis of above scheme and as above scheme: the fan leaf is tube-axial fan leaf,
Return air inlet is set to the side of shell, and air outlet is located at the top of shell.
Compared with the prior art, the utility model has prominent and beneficial technical effects that:
The low pressure brushless DC motor control circuit of the utility model, can be realized motor stepless speed regulation, is applied to seat
Pad, can be realized regulating air volume.
Detailed description of the invention
Fig. 1 is the speed-regulating signal circuit diagram of the low pressure brushless DC motor control circuit of the utility model.
Fig. 2 is the wiring diagram of the control unit of the low pressure brushless DC motor control circuit of the utility model.
Fig. 3 is the structural schematic diagram of the low pressure ventilation seat cushion fan of the utility model.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the attached drawing in embodiment, to reality
The technical solution applied in example is clearly and completely described, it is clear that described embodiment is only that the application a part is implemented
Example, rather than whole embodiments.Based on the embodiment provided, those of ordinary skill in the art are not before making creative work
Every other embodiment obtained is put, shall fall in the protection scope of this application.
In the description of the present application, it is to be understood that the orientation or positional relationship of the instructions such as term " on ", "lower" is base
In orientation or positional relationship shown in the drawings, it is merely for convenience of description the application and simplifies description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of application.
The utility model discloses a kind of low pressure brushless DC motor control circuits, including speed-regulating signal circuit, control list
First U1 and brshless DC motor, speed-regulating signal circuit and control unit access working power, control unit U1 electricity by USB interface
With brushless dc mechatronics to drive brshless DC motor, speed-regulating signal circuit is defeated by filtered speed-regulating signal for road connection
Control unit U1 is given, it is brushless to control that control unit U1 generates the pwm signal of corresponding pulsewidth size according to speed-regulating signal
The revolving speed speed of direct current generator.
In one embodiment, the working power is+5V direct current, and the voltage rating of the brushless direct-current voltage is+5V.
When the pulsewidth of pwm signal is big, the revolving speed of corresponding brshless DC motor is fast；When the pulsewidth of pwm signal is small, phase
The revolving speed for the brshless DC motor answered is slow.
Thus the variable speed of brshless DC motor can be realized.
In one embodiment, three terminals of the pin 6 of control unit U1, pin 7 and pin 8 for brshless DC motor
Son electrical connection.
As shown in fig. 1, the speed-regulating signal circuit includes that adjustable resistance opens the pass UR1, the resistance of adjustable resistance switch UR1
The switch that body one end is switched through adjustable resistance is electrically connected with USB interface, the resistor body other end ground connection of adjustable resistance switch UR1,
The sliding brush end of adjustable resistance switch UR1 is electrically connected with the speed-regulating signal terminals of controller.In specific application, adjustable electric
Resistance switch is rotated to predetermined angular, and closing the switch for adjustable resistance switch powers on for resistor body, and thus adjustable signal circuit produces
Raw electric signal is conveyed to control unit, so that brshless DC motor be made to rotate.When the disconnection of adjustable resistance switch, brushless direct-current
Motor stops working.
The switch that the working power incoming end of described control unit is switched through adjustable resistance is electrically connected with USB interface.
The resistor body of adjustable resistance switch UR1 also and is connected to capacitor C1, one end of capacitor C2 and adjustable resistance switch UR1's
The electrical connection of sliding brush end, the other end ground connection of capacitor C2.
In the present embodiment, adjustable resistance switch UR1 not only has the function of adjusting resistance sizes, but also has the function of switch
Can, to control brshless DC motor starting and close.
In the present embodiment, capacitor C1 and capacitor C2 play the role of filtering.
In the present embodiment, the pin 4 of control unit U1 is grounded through resistance R2, Light-emitting diode LED 1, works as brushless direct-current
When motor is in work shape, Light-Emitting Diode LED1 starter.
The invention also discloses the low pressure ventilation seats that a kind of application has above-mentioned low pressure brushless DC motor control circuit
Fan is padded, the output end of the brshless DC motor is fixed with fan leaf, the brshless DC motor and fan leaf installation
In shell 10, air outlet 11 and return air inlet 12 are equipped on shell.
In the present embodiment, the fan leaf is tube-axial fan leaf, and return air inlet 12 is set to the side of shell；Correspondingly,
Air outlet 11 is located at the top of shell 10 and is located at the top of fan leaf.
Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this
It encloses, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by the protection of the utility model
Within the scope of.
Claims (6)
1. a kind of low pressure brushless DC motor control circuit, it is characterised in that: including speed-regulating signal circuit, control unit and brushless
To drive brshless DC motor, speed-regulating signal circuit and control are single for direct current generator, control unit and brushless dc mechatronics
Member accesses working power by USB interface, and filtered speed-regulating signal is conveyed to control unit by speed-regulating signal circuit, and control is single
Member generates the pwm signal of corresponding pulsewidth size according to speed-regulating signal to control the revolving speed speed of brshless DC motor.
2. low pressure brushless DC motor control circuit according to claim 1, it is characterised in that: the speed-regulating signal circuit
It being switched including adjustable resistance, the switch that resistor body one end of adjustable resistance switch is switched through adjustable resistance is electrically connected with USB interface,
The resistor body other end ground connection of adjustable resistance switch, the sliding brush end of adjustable resistance switch and the speed-regulating signal wiring of controller
End electrical connection, the resistor body of adjustable resistance switch also and are connected to capacitor C1, the sliding of one end of capacitor C2 and adjustable resistance switch
Brush end electrical connection, the other end ground connection of capacitor C2.
3. low pressure brushless DC motor control circuit according to claim 2, it is characterised in that: the work of described control unit
Make the switch that power access end is switched through adjustable resistance to be electrically connected with USB interface.
4. low pressure brushless DC motor control circuit according to claim 1, it is characterised in that: the working power be+
5V direct current, the voltage rating of the brushless direct-current voltage are+5V.
5. a kind of application has the right to require the low pressure ventilation seat cushion of the described in any item low pressure brushless DC motor control circuits of 1-4
Fan, it is characterised in that: the output end of the brshless DC motor is fixed with fan leaf, the brshless DC motor and the wind
Flabellum is mounted in shell, and air outlet and return air inlet are equipped on shell.
6. a kind of application have the right to require 5 described in low pressure ventilation seat cushion fan, it is characterised in that: the fan leaf is axial-flow type
Fan leaf, return air inlet are set to the side of shell, and air outlet is located at the top of shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920133562.1U CN209731122U (en) | 2019-01-25 | 2019-01-25 | Low pressure brushless DC motor control circuit and low pressure ventilation seat cushion fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920133562.1U CN209731122U (en) | 2019-01-25 | 2019-01-25 | Low pressure brushless DC motor control circuit and low pressure ventilation seat cushion fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209731122U true CN209731122U (en) | 2019-12-03 |
Family
ID=68681401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920133562.1U Active CN209731122U (en) | 2019-01-25 | 2019-01-25 | Low pressure brushless DC motor control circuit and low pressure ventilation seat cushion fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209731122U (en) |
-
2019
- 2019-01-25 CN CN201920133562.1U patent/CN209731122U/en active Active
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