Single-key fan control device, fan device and switch

Abstract

The utility model discloses a single-button fan control device, a fan device and a switch, the fan control device comprises a button module, a switching module and a control module, the button module is provided with a single button, and the switching module is respectively connected with a power supply and a fan; when the single key is pressed for a short time, the key module is used for sending a starting signal to the switching module so as to control the switching module to switch the power supply to be connected with the fan, and the control module is used for continuously sending the starting signal to the switching module according to the starting signal so as to maintain the current state of the switching module; when the single key is pressed for a long time, the key module is used for sending a closing signal to the control module, and the control module is used for controlling the switching module to disconnect the power supply and the fan according to the closing signal. According to the single-key fan control device, independent control over starting and stopping of the fan can be achieved, the fan is separated from a power supply, the influence on a system using the fan is reduced, and the safe and reliable performance of the fan is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fan control technical field especially, relates to a single button fan control device, fan device and switch. BACKGROUND

[0002] Because the circuit of the fan applied to the switch is directly connected with the circuit of the switch system, the starting and stopping of the fan cannot be controlled according to the idea of the user, and the fan can be damaged, and when it is damaged, the voltage of the power supply of the switch system is lowered, and the normal work of the switch system is affected. SUMMARY

[0003] The utility model discloses a single button fan control device can realize the individual control of fan starting and stopping, and the fan is isolated from the power supply, reduces the influence of the system using the fan, improves the safe and reliable performance of fan.

[0004] Another purpose of the utility model is to provide a fan device can realize the individual control of fan starting and stopping in the fan device, and the fan is isolated from the power supply, reduces the influence of the system using the fan device, improves the safe and reliable performance of fan.

[0005] Still another purpose of the utility model is to provide a switch can realize the individual control of fan starting and stopping in the switch, and the fan is isolated from the power supply, reduces the influence of the switch, improves the safe and reliable performance of fan.

[0006] In order to realize the above purpose, the utility model discloses a single button fan control device, it includes:

[0007] Key module, switching module and control module,

[0008] The key module is provided with a single button, and the switching module is connected with the power supply and the fan respectively;

[0009] The key module and the control module are connected with the control end of the switching module, when the single button is pressed short, the key module is used to send an opening signal to the switching module to control the switching module to switch the connection of the power supply and the fan, and the control module is used to continuously send the opening signal to the switching module according to the opening signal to maintain the current state of the switching module;

[0010] The key module is connected with the control module, when the single button is pressed long, the key module is used to send a closing signal to the control module, and the control module is used to control the switching module to disconnect the connection of the power supply and the fan according to the closing signal.

[0011] Optionally, the switching module comprises a first conducting device, a first end of the first conducting device is connected with a power supply, a second end of the first conducting device is connected with a fan, a third end of the first conducting device is connected with a first end of the single button, and a second end of the single button is grounded; the control module comprises a controller and a second conducting device, a first end of the second conducting device is connected with the third end of the first conducting device, a second end of the second conducting device is grounded, and a third end of the second conducting device is connected with the controller.

[0012] Optionally, the first conducting device is a PMOS tube, and the second conducting device is an NPN triode.

[0013] Optionally, the switching module further comprises a first resistor, a first diode, a second resistor and a first capacitor, a first end of the first resistor is connected with a power supply, a second end of the first resistor and a first end of the first diode are connected with the third end of the first conducting device, a second end of the first diode is connected with the first end of the single button, a second end of the second resistor and a first end of the first capacitor are connected with the second end of the first conducting device, a second end of the second resistor and a second end of the first capacitor are respectively connected with a positive electrode and a negative electrode of the fan, and the second end of the first capacitor is grounded.

[0014] Optionally, the key module further comprises a third resistor and a second diode, a first end of the third resistor is connected with a 3.3V power supply, a second end of the third resistor is connected with a SHUT_DOWN pin of the controller and a first end of the second diode, and a second end of the second diode is connected with the first end of the single button.

[0015] Optionally, the control module further comprises a fourth resistor and a fifth resistor, a first end of the fourth resistor is connected with a PWN_EN pin of the controller, a second end of the fourth resistor is connected with the third end of the second conducting device and a first end of the fifth resistor, and a second end of the fifth resistor is grounded.

[0016] In order to achieve the above-mentioned another object, the utility model discloses a fan device, it includes: fan and set up in the fan as described in single button fan control device.

[0017] In order to achieve the above-mentioned still another object, the utility model discloses a switch, it includes: switch body, set up in the switch body as described in fan device.

[0018] The utility model discloses a key module cooperation switching module and control module are set up to control the start and stop of fan alone, and the key module is provided with single button, when single button is short pressed, the key module sends an opening signal to switching module to control switching module switching power supply and fan connection, and the control module sends the opening signal to switching module according to opening signal to maintain the current state of switching module, when single button is long pressed, the key module sends the closing signal to control module, and the control module controls switching module to disconnect power supply and fan according to closing signal, the setting of switching module can isolate fan and power supply, reduce the influence that the system of using fan receives, promote the safe and reliable performance of fan, cooperate the key module and can realize the noise moment of fan according to the idea of user, short press control fan starts, and long press control fan stops. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structure schematic diagram of single button fan control device of the utility model embodiment.

[0020] Figure 2 It is the circuit structure diagram of single button fan control device of the utility model embodiment. DETAILED DESCRIPTION

[0021] In order to make the above content clear, the following will be described in detail in combination with the embodiment and the accompanying drawings.

[0022] Please refer to Figure 1 And Figure 2 The utility model discloses a single button fan control device, which comprises:

[0023] Key module 1, switching module 2 and control module 3,

[0024] Key module 1 is provided with single button 11, and switching module 2 is connected with power supply 101 and fan 102 respectively.

[0025] Key module 1 and control module 3 are connected with the control end of switching module 2, when single button 11 is short pressed, key module 1 is used to send an opening signal to switching module 2 to control switching module 2 to switch power supply 101 and fan 102 connection, and control module 3 is used to send the opening signal to switching module 2 according to opening signal to maintain the current state of switching module 2.

[0026] Key module 1 is connected with control module 3, when single button 11 is long pressed, key module 1 is used to send the closing signal to control module 3, and control module 3 is used to control switching module 2 to disconnect power supply 101 and fan 102 according to closing signal.

[0027] The utility model discloses a button module 1 cooperation switching module 2 and control module 3 come the start and stop of fan 102's separate control, button module 1 is provided with single button 11, when single button 11 is short pressed, button module 1 sends an opening signal to switching module 2 to control switching module 2 switching power supply 101 and fan 102 connection, and control module 3 sends the opening signal to switching module 2 according to opening signal and maintains the current state of switching module 2, when single button 11 is long pressed, button module 1 sends the closing signal to control module 3, and control module 3 controls switching module 2 to disconnect power supply 101 and fan 102 according to closing signal, the setting of switching module 2 can isolate fan 102 and power supply 101, reduce the influence that the system of using fan 102 receives, improve the safe and reliable performance of fan 102, cooperate button module 1 can realize the noise moment of fan 102 according to the idea of user, short press control fan 102 starts, and long press control fan 102 stops.

[0028] Please refer to Figure 1 And Figure 2 Switching module 2 includes first conducting device 21, the first end of first conducting device 21 is connected with power supply 101, the second end of first conducting device 21 is connected with fan 102, the third end of first conducting device 21 is connected with the first end of single button 11, and the second end of single button 11 is grounded.

[0029] Further, first conducting device 21 is PMOS tube Q1, and second conducting device 32 is NPN triode Q2.

[0030] By increasing MOS tube, power supply 101 and fan 102 are isolated, so that the system circuit in front of MOS tube is not affected when fan 102 is damaged.

[0031] Specifically, in the embodiment, the S pole of PMOS tube Q1 is the first end of first conducting device 21, the D pole of PMOS tube Q1 is the second end of first conducting device 21, and the G pole of PMOS tube Q1 is the third end of first conducting device 21, when single button 11 is not pressed, the voltage of S pole and G pole of first conducting device 21 is consistent, first conducting device 21 is cut off, and the connection between power supply 101 and fan 102 is disconnected, but not limited thereto.

[0032] Specifically, in the embodiment, the C pole of the NPN transistor Q2 is the first end of the second conducting device 32, the B pole of the NPN transistor Q2 is the second end of the second conducting device 32, and the E pole of the NPN transistor Q2 is the third end of the second conducting device 32, but not limited thereto.

[0033] Further, the switching module 2 further comprises a first resistor R1, a first diode D1, a second resistor R5 and a first capacitor C1, the first end of the first resistor R1 is connected with the power supply 101, the second end of the first resistor R1 and the first end of the first diode D1 are connected with the third end of the first conducting device 21, the second end of the first diode D1 is connected with the first end of the single button 11, the second end of the second resistor R5 and the first end of the first capacitor C1 are connected with the second end of the first conducting device 21, the second end of the second resistor R5 and the first end of the first capacitor C1 are respectively connected with the positive pole and the negative pole of the fan 102, and the second end of the first capacitor C1 is grounded.

[0034] Specifically, in the embodiment, as shown in Figure 2 , the power supply 101 is a DC input source VIN, the VCC voltage between the first conducting device 21 and the second resistor R5 and the first capacitor C1 is the working voltage of the fan 102, the fan 102 is a direct current fan FAN1 working in the switch, and the single button 11 is a fan button KEY1, but not limited thereto.

[0035] Specifically, in the embodiment, after the single button 11 is pressed for a short time, the current of the power supply 101 flows from the power supply 101 to the first diode D1, the single button 11 and the ground end GND in turn, the voltage of the G pole of the PMOS tube is pulled down due to the pressed single button 11, resulting in that the voltage of the G pole of the PMOS tube is less than the voltage of the S pole of the PMOS tube, UGS < 0V, so that the first conducting device 21 is turned on, the VCC voltage is almost the same as the voltage of the power supply 101, and the fan 102 works normally.

[0036] At the same time, the PWN_EN pin of the controller 31 needs to output a high level signal to control the second conducting device 32 Q2 to be turned on, so that the voltage of the G pole of the first conducting device 21 is continuously pulled down by the second conducting device 32, maintaining the voltage of the G pole of the first conducting device 21 less than the voltage of the S pole of the first conducting device 21, to replace the unpressed single button 11 to keep the first conducting device 21 in the on state, but not limited thereto.

[0037] Please refer to Figure 1 and Figure 2 , the button module 1 further comprises a third resistor R3 and a second diode D2, the first end of the third resistor R3 is connected with a 3.3V power supply, the second end of the third resistor R3 is connected with the SHUT_DOWN pin of the controller 31 and the first end of the second diode D2, and the second end of the second diode D2 is connected with the first end of the single button 11.

[0038] Further, the control module 3 further comprises a fourth resistor R4 and a fifth resistor R2, a first end of the fourth resistor R4 is connected with a PWN_EN pin of the controller 31, a second end of the fourth resistor R4 is connected with a third end of the second conducting device 32 and a first end of the fifth resistor R2, and a second end of the fifth resistor R2 is grounded.

[0039] Specifically, in the embodiment, as shown in Figure 2 the controller 31 is a single-chip microcomputer, and a working voltage of the controller 31 is 3.3V, and a SHUT_DOWN pin and a PWN_EN pin of the controller 31 are GPIO ports of the single-chip microcomputer, but are not limited thereto.

[0040] Specifically, in the embodiment, when the fan 102 normally works, the single button 11 is long pressed, so as to directly pull down the SHUT_DOWN pin of the controller 31 through the one-way conducting characteristic of the second diode D2 and the single button 11 (the SHUT_DOWN pin is responsible for inputting a high-level signal by default under the condition that the third resistor R3 connected with a 3.3V power supply maintains pull-up).

[0041] At the same time, the controller 31 needs to start timing after the single button 11 is pressed, and when the time of being pressed reaches a set time length, the controller 31 performs an operation of controlling the fan 102 to stop, that is, a low-level signal is output through the PWN_EN pin to control the second conducting device 32 to be cut off, so that the G electrode voltage of the first conducting device 21 is pulled up by the first resistor R1 connected with the power supply 101, and then the first conducting device 21 is cut off, and the working voltage VCC of the fan 102 is powered off, and the fan 102 normally stops working, but is not limited thereto.

[0042] Please refer to Figure 1 and Figure 2 The utility model discloses a fan device, which comprises a fan and a single-button fan control device as described above arranged on the fan.

[0043] Please refer to Figure 1 and Figure 2 The utility model discloses a switch, which comprises a switch body and a fan device as described above arranged on the switch body.

[0044] The above disclosure is only the preferred embodiment of the utility model, and of course cannot limit the scope of the utility model, so equivalent changes made in the patent application range of the utility model still belong to the range covered by the utility model.

Claims

1. A single button fan control device, comprising: The single-key fan control device comprises a key module, a switching module and a control module. The key module is provided with a single key, and the switching module is connected with a power supply and a fan respectively. The key module and the control module are connected with a control end of the switching module. When the single key is pressed for a short time, the key module sends an opening signal to the switching module to control the switching module to switch the connection between the power supply and the fan. When the single key is pressed for a long time, the key module sends a closing signal to the control module, and the control module controls the switching module to disconnect the power supply and the fan.

2. The single-pushbutton fan control of claim 1, wherein, The switching module comprises a first conducting device, a first end of the first conducting device is connected with the power supply, a second end of the first conducting device is connected with the fan, a third end of the first conducting device is connected with a first end of the single key, and a second end of the single key is grounded.

3. The single-pushbutton fan control of claim 2, wherein, The control module comprises a controller and a second conducting device, a first end of the second conducting device is connected with the third end of the first conducting device, a second end of the second conducting device is grounded, and a third end of the second conducting device is connected with the controller.

4. The single-pushbutton fan control of claim 2, wherein, The first conducting device is a PMOS tube, and the second conducting device is an NPN triode.

5. The single-pushbutton fan control of claim 2, wherein, The switching module further comprises a first resistor, a first diode, a second resistor and a first capacitor, a first end of the first resistor is connected with the power supply, a second end of the first resistor and a first end of the first diode are connected with the third end of the first conducting device, a second end of the first diode is connected with the first end of the single key, a second end of the second resistor and a first end of the first capacitor are connected with the second end of the first conducting device, a second end of the second resistor and a second end of the first capacitor are connected with a positive electrode and a negative electrode of the fan respectively, and the second end of the first capacitor is grounded.

6. The single-pushbutton fan control of claim 2, wherein, The key module further comprises a third resistor and a second diode, a first end of the third resistor is connected with a 3.3V power supply, a second end of the third resistor is connected with a SHUT_DOWN pin of the controller and a first end of the second diode, and a second end of the second diode is connected with the first end of the single key.

7. A fan arrangement, characterized by The control module further comprises a fourth resistor and a fifth resistor, a first end of the fourth resistor is connected with a PWN_EN pin of the controller, a second end of the fourth resistor is connected with the third end of the second conducting device and a first end of the fifth resistor, and a second end of the fifth resistor is grounded. The single-key fan control device comprises a key module, a switching module and a control module.

8. A switch, characterized by The fan device comprises a switch body and the single-key fan control device according to any one of claims 1 to 6. ​

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