CN220366797U - Sliding switch detection circuit, electronic equipment and moisturizing appearance - Google Patents
Sliding switch detection circuit, electronic equipment and moisturizing appearance Download PDFInfo
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- CN220366797U CN220366797U CN202321991930.9U CN202321991930U CN220366797U CN 220366797 U CN220366797 U CN 220366797U CN 202321991930 U CN202321991930 U CN 202321991930U CN 220366797 U CN220366797 U CN 220366797U
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- 238000001514 detection method Methods 0.000 title claims abstract description 126
- 230000003020 moisturizing effect Effects 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000001502 supplementing effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
A sliding switch detection circuit, electronic equipment and a water supplementing instrument belong to the technical field of electronic circuits, and a first magnetic sensing circuit responds to a first detection signal which is positioned at a preset distance from a magnet to output a first level; the second magnetic sensing circuit senses that the magnet is positioned at a preset distance so as to output a second detection signal of the first level; the inverting circuit inverts the second detection signal of the first level to output a third detection signal of the second level; a first resistive component connected between the first magnetic sensing circuit and the first node; a second resistor assembly connected between power ground and the first node; the internal pull-up resistance of the output end of the inverting circuit is larger than the resistance of the first resistance component or the resistance of the second resistance component; the resistance of the first resistance component is smaller than or equal to the resistance of the second resistance component; the level of the first node is used for indicating whether to start corresponding functions; the first level and the second level are of opposite polarity; therefore, port resources are saved and the anti-interference capability is improved.
Description
Technical Field
The application belongs to the technical field of electronic circuits, and particularly relates to a sliding switch detection circuit, electronic equipment and a water supplementing instrument.
Background
The sliding spray switch of the water replenishing instrument product on the market at present detects the position of the magnet through the Hall sensor, and when external magnet interference exists, the spraying is caused under the closed state. The current common solution is to use two hall sensors at the sliding on and off positions respectively, and the signals of the two hall sensors need to be detected through two general input/output ports of the microprocessor.
Therefore, the related sliding switch detection circuit needs to occupy more port resources and has poor anti-interference capability.
Disclosure of Invention
The utility model provides an aim at provides a sliding switch detection circuitry and electronic equipment, moisturizing appearance, aims at solving the problem that relevant sliding switch detection circuitry needs to occupy more port resource and interference killing feature is poor.
The embodiment of the application provides a sliding switch detection circuit, the sliding switch detection circuit includes:
a first magnetic sensing circuit configured to output a first detection signal of a first level in response to being located at a preset distance from the magnet;
the second magnetic sensing circuit is configured to sense that the magnet is positioned at the preset distance so as to output a second detection signal of a first level;
an inverting circuit, coupled to the second magnetic sensing circuit and the first node, configured to invert the second detection signal at the first level to output a third detection signal at the second level;
the slide switch detection circuit further includes:
a first resistive component connected between the first magnetic sensing circuit and the first node;
a second resistor assembly connected between a power ground and the first node;
the internal pull-up resistance of the output end of the inverting circuit is larger than the resistance of the first resistance component or the resistance of the second resistance component; the resistance of the first resistance component is smaller than or equal to the resistance of the second resistance component;
the level of the first node is used for indicating whether to start corresponding functions; the first level and the second level are of opposite polarity.
In one embodiment, a slide switch includes the first magnetic sensing circuit, the second magnetic sensing circuit, and the magnet that slides between the first magnetic sensing circuit and the second magnetic sensing circuit.
In one embodiment, the sliding switch detecting circuit further comprises a third resistor assembly connected with the second magnetic sensing circuit and the inverting circuit;
the third resistor assembly is used for pulling up the second detection signal.
In one embodiment, the sliding switch detecting circuit further includes:
and the control circuit is connected with the first node, the first resistor assembly, the second resistor assembly and the inverting circuit and is configured to judge whether to start corresponding functions according to the level of the first node.
In one embodiment, the control circuit includes a microprocessor;
the first general input and output end of the microprocessor is used as a first node level input end of the control circuit and is connected with the first node so as to input the level of the first node.
In one embodiment, the inverting circuit comprises a triode, a first resistor and a second resistor; the second resistor is an internal pull-up resistor at the output end of the inverting circuit;
the first end of the first resistor is used as a second detection signal input end of the inverting circuit and is connected with the second magnetic sensing circuit so as to be connected with the second detection signal;
the second end of the first resistor is connected with the base electrode of the triode;
the emitter of the triode is connected with the power supply ground;
the collector of the triode and the second end of the second resistor are used as the output end of the inverting circuit and are connected with the first node so as to output the third detection signal;
the first end of the second resistor is connected with a first power supply.
In one embodiment, the first magnetic sensing circuit includes a first hall sensor;
the output end of the first Hall sensor is used as a first detection signal output end of the first magnetic sensing circuit and is connected with the first resistor component so as to output the first detection signal;
the power end of the first Hall sensor is connected with a second power supply; the grounding end of the first Hall sensor is connected with the power supply ground.
In one embodiment, the second magnetic sensing circuit comprises the first magnetic sensing circuit comprises a second hall sensor;
the output end of the second Hall sensor is used as a second detection signal output end of the second magnetic sensing circuit and is connected with the inverting circuit so as to output the second detection signal;
the power end of the second Hall sensor is connected with a third power supply; the grounding end of the second Hall sensor is connected with the power supply ground.
The embodiment of the utility model also provides electronic equipment which comprises the sliding switch detection circuit.
The embodiment of the utility model also provides a water supplementing instrument which comprises the sliding switch detection circuit.
Compared with the prior art, the embodiment of the utility model has the beneficial effects that: when the first polarity external magnet interferes, the first magnetic sensing circuit and the second magnetic sensing circuit simultaneously output low-level detection signals, the first detection signal is low-level, the third detection signal is high-level, and the internal pull-up resistance of the output end of the inverting circuit is larger than the resistance of the first resistance component or the resistance of the second resistance component, so that the level of the first node is low-level; when the first magnetic sensing circuit and the second magnetic sensing circuit are interfered by the external magnet with the second polarity, the first magnetic sensing circuit and the second magnetic sensing circuit simultaneously output detection signals with high level, at the moment, the first detection signal is in high level, and the third detection signal is in low level, so that the level of the first node is in low level; when no external magnet is interfered, the magnet is positioned at the first position, the first magnetic sensing circuit outputs a first detection signal with low level, and the first magnetic sensing circuit outputs a second detection signal with high level, the third detection signal is low level, so that the level of the first node is low level; when the magnet is positioned at the second position and enables the first magnetic sensing circuit to output a first detection signal with high level and the first magnetic sensing circuit to output a second detection signal with low level, the third detection signal is high level, and the resistance of the first resistance component is smaller than or equal to the resistance of the second resistance component, so that the level of the first node is high level; in summary, when only the magnet is located at the second position, the level of the first node is high and the corresponding function is started, and the interference of the external magnet does not cause the starting of the corresponding function, so that the port resource is saved and the anti-interference capability is improved.
Drawings
In order to more clearly illustrate the technical utility model in the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it will be apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to those of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a sliding switch detection circuit according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of another structure of a sliding switch detection circuit according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of another structure of a sliding switch detection circuit according to an embodiment of the present disclosure;
fig. 4 is a schematic circuit diagram of a portion of an exemplary sliding switch detection circuit according to an embodiment of the present application.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Fig. 1 shows a schematic structural diagram of a sliding switch detection circuit according to a preferred embodiment of the present application, and for convenience of explanation, only the parts related to the present embodiment are shown, which are described in detail below:
the sliding switch detecting circuit includes a first magnetic sensing circuit 01, a second magnetic sensing circuit 02, an inverter circuit 03, a first resistor assembly 04, and a second resistor assembly 05.
The first magnetic sensing circuit 01 is configured to output a first detection signal of a first level in response to being located at a preset distance from the magnet.
The second magnetic sensing circuit 02 is configured to sense that the magnet is located at a preset distance to output a second detection signal of the first level.
An inverting circuit 03, connected to the second magnetic sensor circuit 02 and the first node a, is configured to invert the second detection signal of the first level to output a third detection signal of the second level.
The first resistor assembly 04 is connected between the first magnetic sensing circuit 01 and the first node a; the second resistive component 05 is connected between power ground and the first node a.
The internal pull-up resistance of the output end of the inverting circuit 03 is larger than the resistance of the first resistance component 04 or the resistance of the second resistance component 05; the resistance of the first resistor assembly 04 is smaller than or equal to the resistance of the second resistor assembly 05; the level of the first node A is used for indicating whether to start corresponding functions; the first level and the second level are of opposite polarity.
When no external magnet is interfered, the magnet is positioned in the preset distance of the first magnetic sensing circuit 01 and the first level is low, the first magnetic sensing circuit 01 responds to the position of the first magnetic sensing circuit 01 positioned in the preset distance to output a first detection signal with the low level, at the moment, the second magnetic sensing circuit 02 outputs a second detection signal with the high level, and the phase inverting circuit 03 inverts the second detection signal with the high level to output a third detection signal with the low level; the level of the first node a is low and stops turning on the corresponding function.
When no external magnet is interfered, the magnet is positioned in the preset distance of the second magnetic sensing circuit 02 and the first level is low, the second magnetic sensing circuit 02 responds to the preset distance with the magnet to output a second detection signal with a low level, at the moment, the first magnetic sensing circuit 01 outputs a first detection signal with a high level, and the phase inverting circuit 03 inverts the second detection signal with the low level to output a third detection signal with the high level; since the resistance of the first resistance component 04 is less than or equal to the resistance of the second resistance component 05; the level of the first node a is high and the corresponding function is turned on.
When the first polarity external magnet is interfered and the first level is low, the second magnetic sensing circuit 02 outputs a second detection signal of low level, at the moment, the first magnetic sensing circuit 01 outputs the first detection signal of low level, and the inverting circuit 03 inverts the second detection signal of low level to output a third detection signal of high level; since the internal pull-up resistance of the output terminal of the inverter circuit 03 is greater than the resistance of the first resistor element 04 or the resistance of the second resistor element 05, the level of the first node a is low and the corresponding function stops being turned on.
When the second polarity external magnet is interfered and the first level is low, the second magnetic sensing circuit 02 outputs a second detection signal of high level, at this time, the first magnetic sensing circuit 01 outputs a first detection signal of high level, and the inverting circuit 03 inverts the second detection signal of high level to output a third detection signal of low level; the level of the first node a is low and stops turning on the corresponding function.
In summary, when the external magnet interferes, false triggering is not caused, and the microprocessor performs a port to detect the level of the first node A to determine whether to start the corresponding function, thereby saving port resources and improving the reliability and accuracy of the sliding switch detection. It should be noted that the first level may be obtained by analogy, and when the external magnet interferes, false triggering is not caused.
The slide switch includes a first magnetic sensor circuit 01, a second magnetic sensor circuit 02, and a magnet that slides between the first magnetic sensor circuit 01 and the second magnetic sensor circuit 02.
As shown in fig. 2, the sliding switch detecting circuit further includes a third resistor assembly 06 connected to the second magnetic sensing circuit 02 and the inverter circuit 03;
the third resistor assembly 06 is used for pulling up the second detection signal. In an implementation, the second detection signal may be pulled up to the third power supply VCC.
By pulling up the second detection signal, the accuracy of the second detection signal is improved.
As shown in fig. 3, the slide switch detection circuit further includes a control circuit 07.
The control circuit 07, connected to the first node a, the first resistor element 04, the second resistor element 05, and the inverter circuit 03, is configured to determine whether to turn on a corresponding function according to the level of the first node a.
The control circuit 07 judges whether to start the corresponding function, thereby realizing the control function of the sliding switch detection circuit and enriching the functions of the product.
Fig. 4 shows a part of an exemplary circuit structure of a sliding switch detection circuit according to an embodiment of the present utility model, and for convenience of explanation, only a part related to the embodiment of the present utility model is shown, which is described in detail below:
the control circuit 07 includes a microprocessor U3.
The first general input/output terminal P1.0 of the microprocessor U3 is used as a first node level input terminal of the control circuit 07, and is connected to the first node a to input the level of the first node a.
The inverting circuit 03 comprises a triode Q1, a first resistor R1 and a second resistor R2; the second resistor R2 is an internal pull-up resistor at the output end of the inverter circuit 03.
The first end of the first resistor R1 is used as a second detection signal input end of the inverting circuit 03 and is connected with the second magnetic sensing circuit 02 so as to be connected with a second detection signal; the second end of the first resistor R1 is connected with the base electrode of the triode Q1; the emitter of the triode Q1 is connected with the power supply ground; the collector of the triode Q1 and the second end of the second resistor R2 are used as output ends of the inverting circuit 03 and are connected with the first node A so as to output a third detection signal; the first terminal of the second resistor R2 is connected to the first power supply VAA.
The inverter circuit 03 is simple and reliable.
The first magnetic sensing circuit 01 includes a first hall sensor U1.
The output end VOUT of the first Hall sensor U1 is used as a first detection signal output end of the first magnetic sensing circuit 01 and is connected with the first resistor component 04 to output a first detection signal; the power end VDD of the first Hall sensor U1 is connected with the second power supply VBB; the ground GND of the first hall sensor U1 is connected to the power supply ground.
The second magnetic sensing circuit 02 includes the first magnetic sensing circuit 01 including the second hall sensor U2.
The output end VOUT of the second Hall sensor U2 is used as a second detection signal output end of the second magnetic sensing circuit 02 and is connected with the inverting circuit 03 to output a second detection signal; the power end VDD of the second Hall sensor U2 is connected with a third power supply VCC; the ground GND of the second hall sensor U2 is connected to the power supply ground.
It is worth emphasizing that the operating frequency of the second hall sensor U2 may be greater than the operating frequency of the first hall sensor U1, thereby improving the timeliness of sensing.
The first resistor assembly 04 includes a third resistor R3; the second resistor assembly 05 includes a fourth resistor R4; the third resistor assembly 06 includes a fifth resistor R5.
It should be noted that the first power supply VAA, the second power supply VBB, and the third voltage VCC may be the same power supply or may be different power supplies.
The following further describes the operation principle shown in fig. 4:
when no external magnet is interfered, the magnet is located within a preset distance of the first hall sensor U1 and the first level is at a low level, when the first hall sensor U1 responds to the magnet and is located at the preset distance, a first detection signal of the low level is output from the output end VOUT of the first hall sensor U1, at this time, a second detection signal of the high level is output from the output end VOUT of the second hall sensor U2, and the triode Q1 inverts the second detection signal of the high level to output a third detection signal of the low level to the first node a; the level of the first node a is low, and the microprocessor U3 stops turning on the corresponding function according to the level of the first node a.
When no external magnet is interfered, the magnet is located within a preset distance of the second hall sensor U2 and the first level is low, the second hall sensor U2 responds to the fact that the magnet is located within the preset distance to output a second detection signal with the low level from the output end VOUT of the second hall sensor U2, at this time, the output end VOUT of the first hall sensor U1 outputs a first detection signal with the high level, and the triode Q1 inverts the second detection signal with the low level to output a third detection signal with the high level to the first node a; since the resistance of the first resistance component 04 is less than or equal to the resistance of the second resistance component 05; the level of the first node a is high and the corresponding function is turned on.
When the first polarity external magnet is interfered and the first level is low, the output end VOUT of the second Hall sensor U2 outputs a second detection signal of low level, at the moment, the output end VOUT of the first Hall sensor U1 outputs a first detection signal of low level, and the triode Q1 inverts the second detection signal of low level to output a third detection signal of high level to the first node A; since the second resistance R2 is greater than the resistance of the first resistance element 04 or the resistance of the second resistance element 05, the level of the first node a is low and the corresponding function stops being turned on.
When the second polarity external magnet is interfered and the first level is low, the output end VOUT of the second Hall sensor U2 outputs a second detection signal of high level, at the moment, the output end VOUT of the first Hall sensor U1 outputs a first detection signal of high level, and the phase inverting circuit 03 inverts the second detection signal of high level to output a third detection signal of low level; the level of the first node a is low and stops turning on the corresponding function.
In an implementation, the first polarity may be an N-pole and the second polarity may be an S-pole; or alternatively
The first polarity may be an S-pole and the second polarity may be an N-pole.
The embodiment of the utility model also provides electronic equipment which comprises the sliding switch detection circuit.
The embodiment of the utility model also provides a water supplementing instrument which comprises the sliding switch detection circuit.
According to the embodiment of the utility model, the first magnetic sensing circuit responds to the first detection signal which is positioned at a preset distance from the magnet to output a first level; the second magnetic sensing circuit senses that the magnet is positioned at a preset distance so as to output a second detection signal of the first level; the inverting circuit inverts the second detection signal of the first level to output a third detection signal of the second level; a first resistive component connected between the first magnetic sensing circuit and the first node; a second resistor assembly connected between power ground and the first node; the internal pull-up resistance of the output end of the inverting circuit is larger than the resistance of the first resistance component or the resistance of the second resistance component; the resistance of the first resistance component is smaller than or equal to the resistance of the second resistance component; the level of the first node is used for indicating whether to start corresponding functions; the first level and the second level are of opposite polarity; therefore, port resources are saved and the anti-interference capability is improved.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic of each process, and should not limit the implementation process of the embodiment of the present application in any way.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (10)
1. A sliding switch detection circuit, characterized in that the sliding switch detection circuit comprises:
a first magnetic sensing circuit configured to output a first detection signal of a first level in response to being located at a preset distance from the magnet;
the second magnetic sensing circuit is configured to sense that the magnet is positioned at the preset distance so as to output a second detection signal of a first level;
an inverting circuit, coupled to the second magnetic sensing circuit and the first node, configured to invert the second detection signal at the first level to output a third detection signal at the second level;
the slide switch detection circuit further includes:
a first resistive component connected between the first magnetic sensing circuit and the first node;
a second resistor assembly connected between a power ground and the first node;
the internal pull-up resistance of the output end of the inverting circuit is larger than the resistance of the first resistance component or the resistance of the second resistance component; the resistance of the first resistance component is smaller than or equal to the resistance of the second resistance component;
the level of the first node is used for indicating whether to start corresponding functions; the first level and the second level are of opposite polarity.
2. The slide switch detection circuit of claim 1 wherein the slide switch includes the first magnetic sensing circuit, the second magnetic sensing circuit, and the magnet, the magnet sliding between the first magnetic sensing circuit and the second magnetic sensing circuit.
3. The sliding switch detection circuit of claim 1, further comprising a third resistive component coupled to the second magnetic sensing circuit and the inverting circuit;
the third resistor assembly is used for pulling up the second detection signal.
4. The slide switch detection circuit of claim 1, wherein the slide switch detection circuit further comprises:
and the control circuit is connected with the first node, the first resistor assembly, the second resistor assembly and the inverting circuit and is configured to judge whether to start corresponding functions according to the level of the first node.
5. The slide switch detection circuit of claim 4 wherein the control circuit comprises a microprocessor;
the first general input and output end of the microprocessor is used as a first node level input end of the control circuit and is connected with the first node so as to input the level of the first node.
6. The sliding switch detection circuit of claim 1, wherein the inverting circuit comprises a triode, a first resistor, and a second resistor; the second resistor is an internal pull-up resistor at the output end of the inverting circuit;
the first end of the first resistor is used as a second detection signal input end of the inverting circuit and is connected with the second magnetic sensing circuit so as to be connected with the second detection signal;
the second end of the first resistor is connected with the base electrode of the triode;
the emitter of the triode is connected with the power supply ground;
the collector of the triode and the second end of the second resistor are used as the output end of the inverting circuit and are connected with the first node so as to output the third detection signal;
the first end of the second resistor is connected with a first power supply.
7. The sliding switch detection circuit of claim 1, wherein the first magnetic sensing circuit comprises a first hall sensor;
the output end of the first Hall sensor is used as a first detection signal output end of the first magnetic sensing circuit and is connected with the first resistor component so as to output the first detection signal;
the power end of the first Hall sensor is connected with a second power supply; the grounding end of the first Hall sensor is connected with the power supply ground.
8. The sliding switch detection circuit of claim 1, wherein the second magnetic sensing circuit comprises the first magnetic sensing circuit comprises a second hall sensor;
the output end of the second Hall sensor is used as a second detection signal output end of the second magnetic sensing circuit and is connected with the inverting circuit so as to output the second detection signal;
the power end of the second Hall sensor is connected with a third power supply; the grounding end of the second Hall sensor is connected with the power supply ground.
9. An electronic device comprising the slide switch detection circuit according to any one of claims 1 to 8.
10. A water replenishment apparatus comprising the slide switch detecting circuit as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321991930.9U CN220366797U (en) | 2023-07-26 | 2023-07-26 | Sliding switch detection circuit, electronic equipment and moisturizing appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321991930.9U CN220366797U (en) | 2023-07-26 | 2023-07-26 | Sliding switch detection circuit, electronic equipment and moisturizing appearance |
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| Publication Number | Publication Date |
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| CN220366797U true CN220366797U (en) | 2024-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321991930.9U Active CN220366797U (en) | 2023-07-26 | 2023-07-26 | Sliding switch detection circuit, electronic equipment and moisturizing appearance |
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| Country | Link |
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| CN (1) | CN220366797U (en) |
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2023
- 2023-07-26 CN CN202321991930.9U patent/CN220366797U/en active Active
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