Position detection circuit and electronic cigarette

Patent metadata

Field	Value
Publication number	US-2022015445-A1
Application number	US-202117488347-A
Country	US
Kind code	A1
Filing date	Sep 29, 2021
Priority date	Mar 29, 2019
Publication date	Jan 20, 2022
Grant date	—

Abstract

The application provides a position detection circuit, which is connected to a processing circuit (200), and includes a first switch module (110) and a first ground resistor (R1); the first switch module (110) includes a first end, a second end and a first switch (T1), the first switch module (110) is used for controlling on/off state of the first switch (T1) according to whether the placement member is placed at a first placement position, the first end of the first switch module (110) receives a. system voltage (Vcc), and the second end outputs a first state signal or a second state signal to the processing circuit (200) according to the on/off state of the first switch (T1); and the first grounding resistor (R1) has a first end connected to the second end of the first switch module (110), and a second end grounded. Also provided is an electronic cigarette.

First claim

What is claimed is:

1 . A position detection circuit, which is connected to the processing circuit ( 200 ) for detecting whether a placement member is correctly placed, wherein the position detection circuit comprises:
a first switch module ( 110 ), comprising a first end, a second end and a first switch (T 1 ), the first switch module ( 110 ) configured to control on-off state of the first switch (T 1 ) according to whether the placement member is placed in a first placement position, the first end of the first switch module ( 110 ) receiving system voltage (Vcc), the second end of the first switch module ( 110 ) connected to the processing circuit ( 200 ) and outputting a first state signal to the processing circuit ( 200 ) according to the on-off state of the first switch (T 1 ); and a first ground resistor (R 1 ), a first end of the first ground resistor (R 1 ) connected to the second end of the first switch module ( 110 ), and a second end of the first ground resistor (R 1 ) grounded.

2 . The position detection circuit according to claim 1 , wherein the first end of the first switch (T 1 ) is the first end of the first switch module ( 110 ); the second end of the first switch (T 1 ) is the second end of the first switch module ( 110 ).

3 . The position detection circuit according to claim 1 , wherein the position detection circuit also comprises a second ground resistor (R 2 ), a first end of the second ground resistor (R 2 ) is connected to the first end of the first ground resistor (R 1 ), a second end of the second ground resistor (R 2 ) is connected to the second end of the first ground resistor (R 1 ).

4 . The position detection circuit according to claim 1 , wherein a first connection resistor (RL 1 ) is further provided between the second end of the first switch module ( 110 ) and the processing circuit ( 200 ), a first end of the first connection resistor (RL 1 ) is connected to the processing circuit ( 200 ), a second end of the first connection resistor (RL 1 ) is connected to the second end of the first switch module ( 110 ).

5 . The position detection circuit according to claim 1 , wherein the position detection circuit further comprises:
a second switch module ( 120 ), the second switch module ( 120 ) comprising a first end, a second end and a second switch (T 2 ), the second switch module ( 120 ) configured to control on-off state of the second switch (T 2 ) according to whether the placement member is placed in the first placement position, the first end of the second switch module ( 120 ) receiving the system voltage (Vcc), the second end of the second switch module ( 120 ) connected to the processing circuit ( 200 ) and outputting a third state signal or a fourth state signal to the processing circuit ( 200 ) according to the on-off state of the second switch (T 2 ); and a third ground resistor (R 3 ), a first end of the third ground resistor (R 3 ) connected to the second end of the second switch module ( 120 ), the second end of the third ground resistor (R 3 ) grounded.

6 . The position detection circuit according to claim 1 , wherein the position detection circuit further comprises:
a third switch module ( 130 ), the third switch module ( 130 ) comprising a first end, a second end and a third switch (T 3 ), the third switch module ( 130 ) configured to control on-off state of the third switch (T 3 ) according to whether the placement member is placed in a second placement position, the first end of the third switch module ( 130 ) receiving the system voltage (Vcc), the second end of the third switch module ( 130 ) connected to the processing circuit ( 200 ) and outputting a fifth state signal or a sixth state signal to the processing circuit ( 200 ) according to the on-off state of the third switch (T 3 ); and a fifth ground resistor (R 5 ), a first end of the fifth ground resistor (R 5 ) connected to the second end of the third switch module ( 130 ), a second end of the fifth ground resistor (R 5 ) is grounded.

7 . An electronic cigarette, wherein, the electronic cigarette comprises an electronic cigarette main body and a cartridge, the cartridge detachably is matched with the electronic cigarette main body, the electronic cigarette main body comprises a processing circuit ( 200 ) and the position detection circuit according to claim 1 , the placement member is the cartridge of the electronic cigarette, the cartridge stores an aerosol-forming matrix.

8 . The electronic cigarette according to claim 7 , wherein the electronic cigarette main body further comprises a heating member, when the processing circuit ( 200 ) detects that the placement member is not placed correctly according to the position detection circuit, the processing circuit ( 200 ) controls the heating member not to work.

9 . The electronic cigarette according to claim 7 , wherein the electronic cigarette main body further comprises a heating member, when the processing circuit ( 200 ) receives the cigarette lighter signal, and the processing circuit ( 200 ) detects that the placement member is correctly placed according to the position detection circuit, the processing circuit ( 200 ) controls the heating member to work.

10 . The electronic cigarette according to claim 7 , wherein the electronic cigarette main body further comprises a heating member, when the processing circuit ( 200 ) detects that the placement member changes from being placed correctly to being incorrectly placed according to the position detection circuit, the processing circuit ( 200 ) controls the heating member to clean residue attached to the heating member.

11 . A position detection circuit, wherein the position detection circuit is connected to a processing circuit ( 200 ) for detecting whether a placement member is placed in a preset position.

12 . The position detection circuit according to claim 11 , wherein the position detection circuit comprises:
a first switch module ( 110 ), the first switch module ( 110 ) comprising a first end, a second end and a first switch (T 1 ), the first switch module ( 110 ) configured to control on-off state of the first switch (T 1 ) according to whether the placement member is placed in the first placement position, the first end of the first switch module ( 110 ) receiving system voltage (Vcc), the second end of the first switch module ( 110 ) connected to the processing circuit ( 200 ) and outputting a first state signal to the processing circuit ( 200 ) according to the on-off state of the first switch (T 1 ); the first state signal being to detect whether the placement member is placed in a preset position; and a first ground resistor (R 1 ), a first end of the first ground resistor (R 1 ) connected to the second end of the first switch module ( 110 ), the second end of the first ground resistor (R 1 ) is grounded.

13 . The position detection circuit according to claim 11 , wherein the first end of the first switch (T 1 ) is the first end of the first switch module ( 110 ); the second end of the first switch (T 1 ) is the second end of the first switch module ( 110 ).

14 . The position detection circuit according to claim 11 , wherein the position detection circuit also comprises a second ground resistor (R 2 ), a first end of the second ground resistor (R 2 ) is connected to the first end of the first ground resistor (R 1 ), a second end of the second ground resistor (R 2 ) is connected to the second end of the first ground resistor (R 1 ).

15 . The position detection circuit according to claim 11 , wherein a first connection resistor (RL 1 ) is further provided between the second end of th

Assignees

• Changzhou Patent Electronic Tech Co Ltd

Inventors

• Qiu Weihua
• Zhang Yuhui

Classifications

• H03K17/18

  Modifications for indicating state of switch · CPC title

• G01R31/54

  Testing for continuity · CPC title

• A24F40/42

  Cartridges or containers for inhalable precursors · CPC title

• A24F40/53 Primary

  Monitoring, e.g. fault detection · CPC title

• A24F40/51

  Arrangement of sensors · CPC title