CN214468812U - Self-locking circuit and gas stove system - Google Patents
Self-locking circuit and gas stove system Download PDFInfo
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- CN214468812U CN214468812U CN202120555995.3U CN202120555995U CN214468812U CN 214468812 U CN214468812 U CN 214468812U CN 202120555995 U CN202120555995 U CN 202120555995U CN 214468812 U CN214468812 U CN 214468812U
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Abstract
The utility model discloses a self-locking circuit and gas-cooker system, this self-locking circuit includes: the first end of the first switch is grounded, and the second end of the first switch is connected with a power supply through a first resistor and a second resistor which are sequentially connected in series; the first end of the second switch is connected with the power supply, the second end of the second switch is grounded through a third resistor, and the control end of the second switch is connected between the first resistor and the second resistor; the switch power supply chip is connected with the second end of the second switch at an enabling end and connected with the power supply end of the control chip at an output end; the control chip is characterized in that an enabling end of the control chip is connected with an enabling end of the switching power supply chip, and a detection end of the control chip is connected with a second end of the first switch through a first diode; the anode of the first diode is connected with the detection end, and the cathode of the first diode is connected with the second end of the first switch. Therefore, whether the control chip works or not can be controlled through the first switch, and the service life of the power supply is prolonged.
Description
Technical Field
The utility model relates to a gas-cooker field, concretely relates to self-locking circuit and gas-cooker system.
Background
With the gradual improvement of the living standard of people, a plurality of intelligent household appliances are gradually favored by people. When the gas stove works, gas enters the stove from a gas pipe, enters a stove head through the adjustment of a gas valve, is mixed with a part of air, is sprayed out of fire holes of a distributor and is ignited by an ignition device to form flame, and heating and cooking are carried out.
The existing gas stove in China generally adopts batteries for power supply, and after the batteries are installed, because the internal circuit of the gas stove has power consumption, the service life of the batteries is influenced, so that the batteries are replaced more frequently.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming among the prior art gas-cooker internal circuit can have the consumption, influences the long problem of battery use to a self-locking circuit and gas-cooker system are provided.
In order to achieve the above object, an embodiment of the present invention provides a self-locking circuit, which includes: the first end of the first switch is grounded, and the second end of the first switch is connected with a power supply through a first resistor and a second resistor which are sequentially connected in series; the first end of the second switch is connected with the power supply, the second end of the second switch is grounded through a third resistor, and the control end of the second switch is connected between the first resistor and the second resistor; the switch power supply chip is connected with the second end of the second switch at an enabling end and connected with the power supply end of the control chip at an output end; the control chip is characterized in that an enabling end of the control chip is connected with an enabling end of the switching power supply chip, and a detection end of the control chip is connected with a second end of the first switch through a first diode; the anode of the first diode is connected with the detection end, and the cathode of the first diode is connected with the second end of the first switch.
Optionally, the first switch has a closed state when depressed and an open state when released.
Optionally, the second switch is a PNP type triode, a first end of the PNP type triode is connected to the power supply, a second end of the PNP type triode is grounded through the third resistor, and a control end of the PNP type triode is connected between the first resistor and the second resistor.
Optionally, the self-locking circuit further comprises: and the first end of the fourth resistor is connected with the enabling end of the switching power supply chip, and the second end of the fourth resistor is connected with the enabling end of the control chip.
Optionally, the self-locking circuit further comprises: and the anode of the second diode is connected with the enabling end of the control chip, and the cathode of the second diode is connected with the second end of the fourth resistor.
Optionally, the self-locking circuit further comprises: and the anode of the third diode is connected with the second resistor, and the cathode of the third diode is connected with the second end of the first switch.
Optionally, the self-locking circuit further comprises: and one end of the filter capacitor is connected with the second end of the first switch, and the other end of the filter capacitor is grounded.
Optionally, the switching power supply chip is a DCDC chip, and a power supply end of the DCDC chip is connected to the power supply.
Optionally, the control chip is further provided with a ground terminal, and the ground terminal is grounded.
The embodiment of the utility model provides a still provide a gas-cooker system, this gas-cooker system includes above-mentioned arbitrary self-locking circuit.
Compared with the prior art, the utility model, have following advantage:
the embodiment of the utility model provides a self-locking circuit, this self-locking circuit includes: a self-locking circuit, the self-locking circuit comprising: the first end of the first switch is grounded, and the second end of the first switch is connected with a power supply through a first resistor and a second resistor which are sequentially connected in series; the first end of the second switch is connected with the power supply, the second end of the second switch is grounded through a third resistor, and the control end of the second switch is connected between the first resistor and the second resistor; the switch power supply chip is connected with the second end of the second switch at an enabling end and connected with the power supply end of the control chip at an output end; the control chip is characterized in that an enabling end of the control chip is connected with an enabling end of the switching power supply chip, and a detection end of the control chip is connected with a second end of the first switch through a first diode; the anode of the first diode is connected with the detection end, and the cathode of the first diode is connected with the second end of the first switch.
So set up, at the beginning, control chip is in no power supply state, and when first switch closed, the first end and the second end of second switch switched on, and the enable terminal of switching power supply chip was in the high level this moment, supplied power for control chip through the output, and control chip begins to work and gives switching power supply chip messenger through the enable terminal after the messenger switching power supply chip lasts the work. Meanwhile, the detection end of the control chip outputs high level. The first switch can then be switched off, reducing unnecessary power consumption. If the first switch is closed and then opened again, the detection end is changed from high to low and then to high, at the moment, the control chip outputs low level to the enabling end of the switching power supply chip, the switching power supply chip stops working, and therefore the power supply of the control chip is also cut off, and the whole circuit is completely powered off. Therefore, whether the control chip works or not can be controlled through the first switch, and when the control chip is not used for a long time, the power supply of the control chip can be cut off to achieve the purpose of reducing power consumption, and the service life of a battery, namely a power supply, is prolonged.
2. The embodiment of the utility model provides a through setting up first switch as key switch, can switch on the circuit when pressing down for control chip and switching power supply chip work; when the power supply is loosened, unnecessary power consumption can be reduced, and the service life of the power supply can be prolonged. In addition, the first switch does not need to be manually switched, and the use experience is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a circuit diagram of a self-locking circuit according to an embodiment of the present invention.
Reference numerals:
a first switch SW; a second switch Q1; a first resistor R1; a second resistor R2; a third resistor R3; a fourth resistor R4; a first diode D1; a second diode D2; a third diode D3; a filter capacitor C; the power supply VCC.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
With the gradual improvement of the living standard of people, a plurality of intelligent household appliances are gradually favored by people. When the gas stove works, gas enters the stove from a gas pipe, enters a stove head through the adjustment of a gas valve, is mixed with a part of air, is sprayed out of fire holes of a distributor and is ignited by an ignition device to form flame, and heating and cooking are carried out. The existing gas stove in China generally adopts batteries for power supply, and after the batteries are installed, because the internal circuit of the gas stove has power consumption, the service life of the batteries is influenced, so that the batteries are replaced more frequently.
Therefore, the to-be-solved technical problem of the utility model lies in overcoming among the prior art gas-cooker internal circuit can have the consumption, influences the long problem of battery use to a self-locking circuit and gas-cooker system are provided.
Example 1
As shown in fig. 1, an embodiment of the present invention provides a self-locking circuit, which includes: the circuit comprises a first switch SW, a second switch Q1, a switching power supply chip and a control chip.
The first end of the first switch SW is grounded, and the second end of the first switch SW is connected to the power supply VCC through a first resistor R1 and a second resistor R2 which are connected in series in sequence. The first end of the second switch Q1 is connected to the power supply VCC, the second end is grounded through a third resistor R3, and the control end is connected between the first resistor R1 and the second resistor R2. The enabling end of the switching power supply chip is connected with the second end of the second switch Q1, and the output end of the switching power supply chip is connected with the power supply end of the control chip. The enable end of the control chip is connected with the enable end of the switching power supply chip, and the detection end is connected with the second end of the first switch SW through a first diode D1. An anode of the first diode D1 is connected to the detection terminal, and a cathode of the first diode D1 is connected to a second terminal of the first switch SW.
So set up, at the beginning, control chip is in no power supply state, and when first switch SW closed, the first end and the second end of second switch Q1 switched on, and the enable terminal of switching power supply chip was in the high level this moment, supplied power for control chip through the output, and control chip begins to work the back and gives the switching power supply chip enable through the enable terminal, makes the switching power supply chip continuously work. Meanwhile, the detection end of the control chip outputs high level. The first switch SW can then be turned off, reducing unnecessary power consumption. If the first switch SW is turned on and then turned off again, the detection end is changed from high to low and then to high, at the moment, the control chip outputs low level to the enabling end of the switching power supply chip, the switching power supply chip stops working, so that the power supply of the control chip is also cut off, and the whole circuit is completely powered off. Therefore, whether the control chip works or not can be controlled through the first switch SW, and when the control chip is not used for a long time, the power supply of the control chip can be cut off to achieve the purpose of reducing power consumption, and the service life of the power supply is prolonged.
Optionally, in some embodiments of the present invention, the first switch SW is a push switch having a closed state when pressed and an open state when released. The embodiment of the utility model provides a through setting up first switch SW as key switch, can switch on the circuit when pressing, make control chip and switching power supply chip work; when the power supply is loosened, unnecessary power consumption can be reduced, and the service life of the power supply can be prolonged. In addition, the first switch SW does not need to be manually switched on and off, and automatic switching is directly realized through resilience of the key switch, so that the use experience is improved.
Of course, those skilled in the art can change the type of the first switch SW according to actual situations, and this embodiment is merely an example, and is not limited thereto, and the same technical effects can be achieved.
Optionally, in the embodiment of the present invention, the second switch Q1 is a PNP transistor, a first end of the PNP transistor is connected to the VCC, a second end of the PNP transistor is grounded through the third resistor R3, and a control end of the PNP transistor is connected between the first resistor R1 and the second resistor R2.
Of course, those skilled in the art can change the type of the second switch Q1 according to practical situations, and the embodiment is merely for illustration and not for limitation, and can achieve the same technical effects.
Optionally, the self-locking circuit further comprises: a fourth resistor R4, a second diode D2, a third diode D3 and a filter capacitor C.
Specifically, a first end of the fourth resistor R4 is connected to an enable end of the switching power supply chip, and a second end is connected to an enable end of the control chip. The anode of the second diode D2 is connected to the enable terminal of the control chip, and the cathode is connected to the second terminal of the fourth resistor R4. An anode of the third diode D3 is connected to the second resistor R2, and a cathode thereof is connected to the second terminal of the first switch SW. One end of the filter capacitor C is connected to the second end of the first switch SW, and the other end is grounded.
In the embodiment of the present invention, the second diode D2 and the third diode D3 both perform a unidirectional conduction function.
Optionally, in some embodiments of the present invention, the switching power supply chip is a DCDC chip, and a power supply terminal of the DCDC chip is connected to the VCC power supply. The control chip is also provided with a grounding end which is grounded.
Example 2
The embodiment of the utility model provides a still provide a gas-cooker system, this gas-cooker system includes above-mentioned arbitrary self-locking circuit.
So set up, at the beginning, control chip among the self-locking circuit is in no power supply state, and when first switch SW closed, the first end and the second end of second switch Q1 switched on, and the enable terminal of switching power supply chip was in the high level this moment, gave control chip power supply through the output, and control chip begins to work the back and gives switching power supply chip messenger through the enable terminal and enables, makes switching power supply chip continuously work. Meanwhile, the detection end of the control chip outputs high level. The first switch SW can then be turned off, reducing unnecessary power consumption. If the first switch SW is turned on and then turned off again, the detection end is changed from high to low and then to high, at the moment, the control chip outputs low level to the enabling end of the switching power supply chip, the switching power supply chip stops working, so that the power supply of the control chip is also cut off, and the whole circuit is completely powered off. Therefore, whether the control chip works or not can be controlled through the first switch SW, and when the control chip is not used for a long time, the power supply of the control chip can be cut off to achieve the purpose of reducing power consumption, and the service life of the power supply is prolonged.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. A self-locking circuit, comprising:
the first end of the first Switch (SW) is grounded, and the second end of the first Switch (SW) is connected with a power supply (VCC) through a first resistor (R1) and a second resistor (R2) which are sequentially connected in series;
a second switch (Q1) having a first terminal connected to the power supply (VCC), a second terminal connected to ground through a third resistor (R3), and a control terminal connected between the first resistor (R1) and the second resistor (R2);
the enabling end of the switching power supply chip is connected with the second end of the second switch (Q1), and the output end of the switching power supply chip is connected with the power supply end of the control chip;
the control chip is characterized in that an enabling end of the control chip is connected with an enabling end of the switching power supply chip, and a detection end of the control chip is connected with a second end of the first Switch (SW) through a first diode (D1); an anode of the first diode (D1) is connected to the detection terminal, and a cathode of the first diode (D1) is connected to a second terminal of the first Switch (SW).
2. Self-locking circuit according to claim 1, characterized in that said first Switch (SW) is a push-button switch having a closed state when depressed and an open state when released.
3. The self-locking circuit of claim 1, wherein the second switch (Q1) is a PNP transistor.
4. The self-locking circuit of any one of claims 1 to 3, further comprising:
and a fourth resistor (R4), wherein the first end of the fourth resistor is connected with the enable end of the switching power supply chip, and the second end of the fourth resistor is connected with the enable end of the control chip.
5. The self-locking circuit of claim 4, further comprising:
and the anode of the second diode (D2) is connected with the enabling end of the control chip, and the cathode of the second diode (D2) is connected with the second end of the fourth resistor (R4).
6. The self-locking circuit of any one of claims 1 to 3, further comprising:
and a third diode (D3) having an anode connected to the second resistor (R2) and a cathode connected to the second terminal of the first Switch (SW).
7. The self-locking circuit of any one of claims 1 to 3, further comprising:
and one end of the filter capacitor (C) is connected with the second end of the first Switch (SW), and the other end of the filter capacitor (C) is grounded.
8. The self-locking circuit according to any one of claims 1 to 3, wherein the switching power supply chip is a DCDC chip, and a power supply terminal of the DCDC chip is connected to the power supply (VCC).
9. The self-locking circuit according to any one of claims 1 to 3, wherein the control chip is further provided with a ground terminal, and the ground terminal is grounded.
10. A gas burner system comprising a burner and a self-locking circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120555995.3U CN214468812U (en) | 2021-03-17 | 2021-03-17 | Self-locking circuit and gas stove system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120555995.3U CN214468812U (en) | 2021-03-17 | 2021-03-17 | Self-locking circuit and gas stove system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214468812U true CN214468812U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120555995.3U Active CN214468812U (en) | 2021-03-17 | 2021-03-17 | Self-locking circuit and gas stove system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214468812U (en) |
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2021
- 2021-03-17 CN CN202120555995.3U patent/CN214468812U/en active Active
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