CN221354294U - Hall switch energy-saving circuit and keyboard - Google Patents
Hall switch energy-saving circuit and keyboard Download PDFInfo
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- CN221354294U CN221354294U CN202323317221.5U CN202323317221U CN221354294U CN 221354294 U CN221354294 U CN 221354294U CN 202323317221 U CN202323317221 U CN 202323317221U CN 221354294 U CN221354294 U CN 221354294U
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- 238000001514 detection method Methods 0.000 claims abstract description 6
- 230000005059 dormancy Effects 0.000 claims abstract description 5
- 230000002618 waking effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007958 sleep Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a Hall switch energy-saving circuit and a keyboard, wherein the Hall switch energy-saving circuit comprises a Hall sensor circuit, a Hall switch circuit and a control chip U1, the Hall sensor circuit comprises a key with a magnetic element and a Hall sensor connected with the key, the Hall sensor is used for detecting the change of the stroke of the key, and the Hall switch circuit is used for waking up or dormancy the control chip U1 according to the key detection signal of the Hall sensor. When the Hall sensor detects that no key is pressed in the set time range, the control chip U1 enters a dormant state through the Hall switch circuit, so that the power consumption of the control chip U1 can be greatly reduced, and when the Hall sensor detects that the key is pressed, the control chip U1 is awakened through the Hall switch circuit, so that the control chip U1 can work normally.
Description
Technical Field
The utility model relates to the technical field of circuits, in particular to a Hall switch energy-saving circuit and a keyboard.
Background
According to the characteristics of the Hall sensor, a magnetic shaft is used for keys of the keyboard, when the keys are pressed or released, the Hall sensor detects the change of a magnetic field, so that the change of the magnetic field is converted into the change of voltage, and finally, the process of pressing or releasing the keys is processed into relative linear change through analog-to-digital conversion.
The existing Hall application circuit can not enable a control chip at the rear end to enter a power saving mode, and needs to sample in real time to judge whether a key is pressed down, so that larger working current can be generated, and power consumption is larger.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art and provides a Hall switch energy-saving circuit and a keyboard.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
In one aspect, the utility model provides a hall switch energy-saving circuit, which comprises a hall sensor circuit, a hall switch circuit and a control chip U1, wherein the hall sensor circuit comprises a key with a magnetic element and a hall sensor connected with the key, the hall sensor is used for detecting the change of the key stroke, and the hall switch circuit is used for waking up or dormancy the control chip U1 according to a key detection signal of the hall sensor.
The further technical scheme is as follows: the Hall switch circuit comprises a triode Q1 and a MOS tube QP1, wherein the base electrode of the triode Q1 is connected with the control chip U1, the collector electrode of the triode Q1 is connected with the Hall sensor, the grid electrode of the MOS tube QP1 is connected with the collector electrode of the triode Q1, the source electrode of the MOS tube QP1 is connected with the Hall sensor, and the drain electrode of the MOS tube QP1 is connected with the control chip U1.
The further technical scheme is as follows: the Hall switch circuit further comprises a resistor R7, one end of the resistor R7 is connected with the base electrode of the triode Q1, and the other end of the resistor R7 is connected with the control chip U1.
The further technical scheme is as follows: the Hall switch circuit further comprises a resistor R8, one end of the resistor R8 is connected with the collector electrode of the triode Q1, and the other end of the resistor R8 is connected between the Hall sensor and the source electrode of the MOS tube QP 1.
The further technical scheme is as follows: and a power switch of the Hall sensor is connected with the control chip U1.
The further technical scheme is as follows: and an output voltage detection port of the Hall sensor is connected with the control chip U1.
The further technical scheme is as follows: the triode Q1 is an NPN triode.
The further technical scheme is as follows: the model adopted by the MOS transistor QP1 is S I2301.
The further technical scheme is as follows: the model of the control chip U1 is YC3021.
On the other hand, the utility model also provides a keyboard comprising the Hall switch energy-saving circuit.
Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a hall switch energy saving circuit, includes hall sensor circuit, hall switch circuit and control chip U1, and hall sensor circuit includes the button of taking magnetic element to and the hall sensor who is connected with the button, hall sensor is used for detecting the change of button stroke, and hall switch circuit is used for waking up or dormancy control chip U1 according to hall sensor's button detected signal. When the Hall sensor detects that no key is pressed in the set time range, the control chip U1 enters a dormant state through the Hall switch circuit, so that the power consumption of the control chip U1 can be greatly reduced, and when the Hall sensor detects that the key is pressed, the control chip U1 is awakened through the Hall switch circuit, so that the control chip U1 can work normally.
The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the present utility model so that the same may be more clearly understood, as well as to provide a better understanding of the present utility model with reference to the following detailed description of the preferred embodiments.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic circuit diagram of a hall switch energy saving circuit according to an embodiment of the present utility model.
Detailed Description
The technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be understood that the terms "comprises" and "comprising," when used in this specification and claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
As shown in fig. 1, the embodiment of the utility model provides a hall switch energy-saving circuit, which comprises a hall sensor circuit 1, a hall switch circuit 2 and a control chip U1, wherein the hall sensor circuit 1 comprises a key with a magnetic element and a hall sensor connected with the key, the hall sensor is used for detecting the change of the stroke of the key, and the hall switch circuit 2 is used for waking up or dormancy the control chip U1 according to the key detection signal of the hall sensor.
When the Hall sensor detects that no key is pressed in the set time range, the control chip U1 enters a dormant state through the Hall switch circuit 2, so that the power consumption of the control chip U1 can be greatly reduced, and when the Hall sensor detects that the key is pressed, the control chip U1 is awakened through the Hall switch circuit 2, so that the control chip U1 can work normally.
As shown in fig. 1, the hall switch circuit 2 includes a transistor Q1 and a MOS transistor QP1, the transistor Q1 is used for turning on the MOS transistor QP1 and supplying power to the hall switch circuit 2, and the MOS transistor QP1 is used for supplying power. The base of the triode Q1 is connected with a GPIO40 pin of the control chip U1, the collector of the triode Q1 is connected with the Hall sensor, the emitter of the triode Q1 is grounded, the grid of the MOS tube QP1 is connected with the collector of the triode Q1, the source of the MOS tube QP1 is connected with the Hall sensor, and the drain of the MOS tube QP1 is connected with a VBAT pin of the control chip U1.
As shown in fig. 1, in an embodiment, the hall switch circuit 2 further includes a resistor R7, one end of the resistor R7 is connected to the base of the transistor Q1, and the other end of the resistor R7 is connected to the GPIO40 pin of the control chip U1.
Further, as shown in fig. 1, the hall switch circuit 2 further includes a resistor R8, one end of the resistor R8 is connected to the collector of the triode Q1, and the other end of the resistor R8 is connected between the hall sensor and the source of the MOS transistor QP 1.
As shown in fig. 1, power switches CD0 to CD4 of the hall sensor are connected to a GPIO7 pin, a GPIO6 pin, a GPIO5 pin and a GPIO 3pin of the control chip U1, and an output voltage detection port R0 of the hall sensor is connected to a GPIO22 pin of the control chip U1.
In this embodiment, the transistor Q1 is an NPN transistor, the MOS transistor QP1 is a type SI2301, the control chip U1 is a type YC3021, however, in other embodiments, the MOS transistor QP1 may be a MOS transistor having a similar function to the SI2301,
The control chip U1 may employ a chip having a similar function to the YC 3021.
The specific working process is as follows:
When the key is not pressed within the set time range, the Hall sensor circuit 1 stops scanning the key stroke to trigger response, and the control chip U1 enters the energy saving mode (namely the sleep mode). After the control chip U1 enters the energy saving mode, the HALL_PWR always outputs a high level, the triode Q1 is opened through the resistor R7, the collector is leaked to the emitter after the base electrode of the triode Q1 is saturated, the MOS tube QP1 is opened to supply power to the Hall switch circuit 2, the WAKE-UP port WAKE_UP of the control chip U1 is built-in pull-down input of the control chip U1 after the control chip U1 enters the energy saving mode, and the control chip U1 is in a low level state. When the key is pressed, the Hall sensor outputs a high level from the Hall switch circuit 2 to the control chip U1 after detecting that the magnetic field is saturated. When the control chip U1 detects that the feedback is high level, the control chip U1 is awakened.
The embodiment of the utility model also provides a keyboard comprising the Hall switch energy-saving circuit. The Hall switch energy-saving circuit is applied to the keyboard, so that the energy consumption of the keyboard can be greatly reduced, the game experience of a user is improved, and the endurance time of the keyboard is prolonged.
While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a hall switch energy saving circuit which characterized in that, includes hall sensor circuit, hall switch circuit and control chip U1, hall sensor circuit include take magnetic element's button, and with the hall sensor of button connection, hall sensor is used for detecting the change of button stroke, hall switch circuit is used for according to hall sensor's button detected signal awakens up or dormancy control chip U1.
2. The hall switch energy saving circuit according to claim 1, wherein the hall switch circuit comprises a triode Q1 and a MOS transistor QP1, a base electrode of the triode Q1 is connected with the control chip U1, a collector electrode of the triode Q1 is connected with the hall sensor, a gate electrode of the MOS transistor QP1 is connected with the collector electrode of the triode Q1, a source electrode of the MOS transistor QP1 is connected with the hall sensor, and a drain electrode of the MOS transistor QP1 is connected with the control chip U1.
3. The hall switch power-saving circuit according to claim 2, further comprising a resistor R7, wherein one end of the resistor R7 is connected to the base of the transistor Q1, and the other end of the resistor R7 is connected to the control chip U1.
4. The hall switch power-saving circuit according to claim 2, further comprising a resistor R8, wherein one end of the resistor R8 is connected to the collector of the transistor Q1, and the other end of the resistor R8 is connected between the hall sensor and the source of the MOS transistor QP 1.
5. The hall switch power-saving circuit of claim 1, wherein a power switch of the hall sensor is connected to the control chip U1.
6. The hall switch power-saving circuit according to claim 1, wherein the output voltage detection port of the hall sensor is connected to the control chip U1.
7. The hall switch power-saving circuit of claim 2, wherein the transistor Q1 is an NPN transistor.
8. The hall switch power-saving circuit of claim 2, wherein the MOS transistor QP1 is of model S I2301.
9. The hall switch power-saving circuit of claim 1, wherein the control chip U1 is of the YC3021 type.
10. A keyboard comprising a hall switch power saving circuit according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323317221.5U CN221354294U (en) | 2023-12-06 | 2023-12-06 | Hall switch energy-saving circuit and keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323317221.5U CN221354294U (en) | 2023-12-06 | 2023-12-06 | Hall switch energy-saving circuit and keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221354294U true CN221354294U (en) | 2024-07-16 |
Family
ID=91834762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323317221.5U Active CN221354294U (en) | 2023-12-06 | 2023-12-06 | Hall switch energy-saving circuit and keyboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221354294U (en) |
-
2023
- 2023-12-06 CN CN202323317221.5U patent/CN221354294U/en active Active
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