Wake-up device for reducing standby power consumption of magnetic axis keyboard
By using an accelerometer or a Hall effect sensor on the keyboard body to detect the keyboard status, the high power consumption problem of magnetic switch keyboards when there is no keystroke is solved, achieving a low-power standby state and improving battery life.
Patent Information
- Application Number
- CN202520329872.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-02-27
AI Technical Summary
When there is no keystroke, the linear Hall sensor of the magnetic axis keyboard still needs to output detection values in real time, causing the control chip and Hall sensor to work continuously and preventing it from entering a low-power standby state, resulting in insufficient battery life.
An accelerometer or a Hall sensor is used as a wake-up device to detect the keyboard's usage status and wake up the control chip, avoiding real-time output of detection values by the linear Hall sensor. The control chip and Hall sensor then enter a low-power standby state.
It effectively reduces the standby power consumption of magnetic axis keyboards and improves battery life.
Smart Images
Figure CN223757077U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of magnetic shaft keyboard, especially a kind of wake-up device for reducing standby power consumption of magnetic shaft keyboard. BACKGROUND
[0002] Magnetic shaft keyboard can meet more personalized needs due to the sensitivity of each key, provide extreme use experience, and does not need to contact the spring, longer service life, faster, more sensitive and more stable trigger, and has developed into a big feature of e-sports magnetic shaft keyboard design.
[0003] Magnetic shaft keyboard design uses Hall effect technology, when hitting the key, the position of permanent magnet and linear Hall sensor changes relatively, and linear Hall sensor detects the change value, to detect the use state of the key.
[0004] However, when there is no keyboard hitting state, linear Hall sensor still needs to output detection value in real time, to be processed by control chip on circuit board, so control chip and linear Hall sensor are still in working state, cannot enter low-power standby state, resulting in large sleep power consumption, and further leading to insufficient endurance of magnetic shaft keyboard. INVENTION CONTENTS
[0005] The utility model provides a kind of magnetic shaft keyboard standby wake-up device based on accelerometer, to more exactly solve the problem of large power consumption when the above keyboard standby.
[0006] The utility model is realized by the following technical solutions:
[0007] The utility model provides a kind of wake-up device for reducing standby power consumption of magnetic shaft keyboard, including keyboard main body and circuit board, the keyboard main body is located in the one side of the circuit board, the keyboard main body includes key cap, key shaft and magnetic piece, the circuit board is equipped with first magnetic field intensity detection piece and control chip, the key shaft is connected with the key cap and the magnetic piece respectively, the first magnetic field intensity detection piece is electrically connected with the control chip;
[0008] The circuit board is equipped with inductive wake-up piece, and the inductive wake-up piece is electrically connected with the control chip, and the inductive wake-up piece includes acceleration detection piece or second magnetic field intensity detection piece, and is used to wake up the control chip in standby state.
[0009] Further, the control chip includes standby state, when the control chip is in the standby state, the inductive wake-up piece includes the acceleration detection piece, the acceleration detection piece is used to generate interrupt signal, and wakes up the control chip.
[0010] Further, when the induction wake-up component comprises a second magnetic field strength detection component, the first magnetic field strength detection component is located below the magnetic component, and the second magnetic field strength detection component is arranged in parallel with the first magnetic field strength detection component.
[0011] Further, the acceleration detection component is used for sensing the position changes of the keyboard body in the X-axis direction, the Y-axis direction and the Z-axis direction in space, and outputs corresponding sensing electric signals, which are used for waking up the control chip in the standby state.
[0012] Further, when the keyboard body is displaced, the acceleration detection component wakes up the control chip, and the control chip is used for judging the actions of all the keyboard bodies.
[0013] Further, the second magnetic field strength detection component is in close contact with the first magnetic field strength detection component and is electrically connected with the control chip.
[0014] Further, the second magnetic field strength detection component shares the magnetic field generated by the magnetic component with the first magnetic field strength detection component.
[0015] Further, the second magnetic field strength detection component is used for detecting the magnetic field strength and outputting different detection electric signals, which are used for waking up the control chip in the standby state.
[0016] Further, the elastic components are connected with the keyboard body and the circuit board respectively, so that the magnetic component is close to or far away from the first magnetic field strength detection component.
[0017] Further, the first magnetic field strength detection component detects the strength of the magnetic field generated by the magnetic component and outputs different detection values, and the control chip judges the input values of the keyboard according to the detection values.
[0018] The utility model discloses the beneficial effect:
[0019] The utility model provides a keyboard, including keyboard main part, circuit board, elastic piece and inductive wake up piece, keyboard main part includes key cap, key shaft and magnetic piece, and circuit board is equipped with first magnetic field intensity detection piece and control chip, keyboard main part is connected with one side of circuit board through elastic piece, and magnetic piece is close to or far from first magnetic field intensity detection piece, and first magnetic field intensity detection piece produces different detection value according to magnetic field intensity, and control chip obtains the input data of keyboard according to detection value, inductive wake up piece is electrically connected with control chip, and inductive wake up piece adopts acceleration detection piece or second magnetic field intensity detection piece and is used for waking up the control chip of standby state, the utility model discloses the inductive wake up piece is used to detect keyboard use state and wakes up control chip, avoids the first magnetic field intensity detection piece in keyboard dormancy standby state, still needs real -time output detection value for control chip processing, and control chip and first magnetic field intensity detection piece are actually still in working condition, lead to the problem of standby power consumption is too big, effectively reduces standby power consumption. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the utility model will be further described below in conjunction with the drawings and embodiments, the drawings in the following description only part of the utility model for the person skilled in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings:
[0021] Figure 1 It is traditional magnetic shaft keyboard working principle diagram;
[0022] Figure 2 It is the working principle diagram when inductive wake up piece adopts accelerometer in an embodiment of the utility model;
[0023] Figure 3 It is Figure 2 The structural diagram of circuit board;
[0024] Figure 4 It is the working flow chart when inductive wake up piece is accelerometer in an embodiment of the utility model;
[0025] Figure 5 It is the working principle diagram when inductive wake up piece adopts switch hall sensor in an embodiment of the utility model;
[0026] Figure 6 It is switch hall sensor working principle diagram;
[0027] Figure 7 It is Figure 5 The working principle circuit diagram of device.
[0028] Label explanation: 10, keyboard main body; 11, key cap; 12, key shaft; 13, magnetic piece; 20, circuit board; 21, control chip; 22, linear Hall sensor; 30, induction wake-up piece; 31, accelerometer; 32, switch Hall sensor. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will be further described in detail with the help of the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.
[0030] Please refer to Figures 1-7 It is an example of the utility model for reducing standby power consumption of magnetic shaft keyboard wake-up device, including keyboard main body 10 and circuit board 20, the keyboard main body 10 is located in the circuit board 20 one side, the keyboard main body 10 includes key cap 11, key shaft 12 and magnetic piece 13, the circuit board 20 is equipped with first magnetic field intensity detection piece and control chip 21, the key shaft 12 is connected with the key cap 11 and the magnetic piece 13 respectively, the first magnetic field intensity detection piece is electrically connected with the control chip 21;
[0031] The circuit board 20 is equipped with induction wake-up piece 30, and the induction wake-up piece 30 is electrically connected with the control chip 21, the induction wake-up piece 30 includes acceleration detection piece or second magnetic field intensity detection piece, and is used to wake up the control chip 21 in standby state.
[0032] In the embodiment, the first magnetic field strength detection member adopts a linear Hall sensor 22, the second magnetic field strength detection member adopts a switching Hall sensor 32, and the acceleration detection member adopts an accelerometer 31, a wake-up device for reducing standby power consumption of a magnetic shaft keyboard comprises a keyboard main body 10, a circuit board 20, an elastic member, and a sensing wake-up member 30, the keyboard main body 10 comprises a key cap 11, a key shaft 12, and a magnetic member 13, the key shaft 12 is connected with the key cap 11 and the magnetic member 13 respectively, the circuit board 20 is provided with a linear Hall sensor 22 and a control chip 21, the linear Hall sensor 22 is electrically connected with the control chip 21, the keyboard main body 10 is connected with one side of the circuit board 20 through the elastic member, when a user uses the keyboard, the user strikes the key cap 11, the position of the magnetic member 13 and the linear Hall sensor 22 changes relatively, the linear Hall sensor detects the change of the magnetic field strength and outputs a detection value corresponding to the change to the control chip 21, and the control chip 21 judges the use state of the keyboard according to the detection value; the sensing wake-up member 30 is arranged on the circuit board 20 and is electrically connected with the control chip 21, the sensing wake-up member 30 adopts an accelerometer 31 or a switching Hall sensor 32 and is used for waking up the control chip 21 in a standby state; when the sensing wake-up member 30 adopts the accelerometer, the number of the accelerometers 31 is one or several, the accelerometers 31 are uniformly distributed on the side of the circuit board 20 far away from the magnetic member 13 and are electrically connected with the control chip 21, the accelerometers 31 can sense the position change of the keyboard main body 10 in X-axis direction, Y-axis direction and Z-axis direction of space and output corresponding sensing electric signals, and the sensing electric signals are used for waking up the control chip 21 in the standby state; when the sensing wake-up member 30 adopts the switching Hall sensor 32, the number of the switching Hall sensors 32 is one or more, the switching Hall sensors 32 are close to the linear Hall sensor 22 and are electrically connected with the control chip 21, the switching Hall sensors 32 and the linear Hall sensor 22 share the magnetic field generated by the magnetic member 13, when the keyboard is struck and used, the switching Hall sensors 32 detect the magnetic field strength and output different detection electric signals, and the detection electric signals are used for waking up the control chip 21 in the standby state.
[0033] It is worth mentioning that the collection and processing of keyboard data by the linear Hall sensor, the switching Hall sensor and the accelerometer and the collection and processing of the data output by the linear Hall sensor, the switching Hall sensor and the accelerometer by the control chip can be realized in the manner of the prior art.
[0034] The utility model discloses a sensing wake-up member 30 is used for detecting the use state of the keyboard and waking up the control chip 21, avoids the linear Hall sensor 22 still needing real -time output detection value for the control chip 21 processing under the keyboard hibernation standby state, and the control chip 21 and the linear Hall sensor 22 are actually still in working state, lead to the problem of excessive standby power consumption, effectively reduce standby power consumption.
[0035] Please refer toFigure 1 The traditional magnetic shaft keyboard comprises a keyboard body 10, a circuit board 20 and an elastic member. The keyboard body 10 comprises a key cap 11, a key shaft 12 and a magnetic member 13. The key shaft 12 is connected with the key cap 11 and the magnetic member 13 respectively. The circuit board 20 is provided with a linear Hall sensor 22 and a control chip 21. The linear Hall sensor 22 is electrically connected with the control chip 21. The keyboard body 10 is connected with one side of the circuit board 20 through the elastic member. When a user uses the keyboard, the user strikes the key cap 11. The position of the magnetic member 13 and the linear Hall sensor 22 changes relatively. The Hall sensor detects the change of the magnetic field intensity and outputs the detection value corresponding to the change to the control chip 21. The control chip 21 judges the use state of the keyboard according to the detection value.
[0036] In a specific implementation, the traditional magnetic shaft keyboard comprises a keyboard body 10, a circuit board 20 and an elastic member. The keyboard body 10 is arranged on one side of the circuit board 20. The keyboard body 10 comprises a key cap 11, a key shaft 12 and a magnetic member 13. The key shaft 12 is fixedly arranged below the key cap 11. The key shaft 12 is provided with the magnetic member 13. In a specific embodiment, the magnetic member 13 can adopt a permanent magnet. The circuit board 20 is provided with a linear Hall sensor 22 and a control chip 21. The linear Hall sensor 22 is electrically connected with the control chip 21. The linear Hall sensor 22 is located on the side of the circuit board 20 away from the permanent magnet. One end of the elastic member is connected with the keyboard body 10. The other end of the elastic member is connected with the circuit board 20. The keyboard body 10 can move up and down relative to the circuit board 20. In a specific embodiment, the elastic member can adopt a spring. When a user uses the keyboard, the user strikes the keyboard body 10 with fingers. The position of the magnetic member 13 and the linear Hall sensor 22 changes relatively. The magnetic field intensity changes. The linear Hall sensor 22 senses the change of the current size and outputs the detection value corresponding to the change to the control chip 21. The control chip 21 judges the use state of the keyboard according to the detection value. In a specific embodiment, the linear Hall sensor 22 outputs the detection value as a voltage value. The control chip 21 adopts an MCU (Microcontroller Unit). The MCU is a microcomputer system integrated with a processor core, a memory, an input and output interface and other external device functions.
[0037] More specifically, the user's finger taps the key cap 11, so that the keyboard body 10 moves downward, at this time, the magnetic member 13 is close to the linear Hall sensor 22, the linear Hall sensor 22 detects that the magnetic field strength increases, the linear Hall sensor 22 outputs the corresponding voltage, the control chip 21 reads the output voltage and processes, thereby judging that the keyboard is used; Since each key shaft 12 corresponds to a linear Hall sensor 22, the linear Hall sensor 22 has a large working current when working, and when there is no keyboard tapping, the linear Hall sensor 22 still needs to output the detection value in real time for the control chip 21 to process, therefore, in the standby state of the keyboard, the control chip 21 and the linear Hall sensor 22 are actually still in the working state, and cannot enter the low-power standby state, resulting in large standby power consumption.
[0038] Please refer to Figures 2-4 When the induction wake-up member 30 adopts an accelerometer, the number of the accelerometer 31 is one or several, the accelerometer 31 is uniformly distributed on the side of the circuit board 20 away from the magnetic member 13, and is electrically connected with the control chip 21, the accelerometer 31 can sense the position change of the keyboard body 10 in the X-axis direction, the Y-axis direction and the Z-axis direction of the space, and output the corresponding induction electric signal, the induction electric signal is used to wake up the control chip 21 in the standby state.
[0039] In specific implementation: when the induction wake-up member 30 adopts an accelerometer, the number of the accelerometer 31 is one or several, the detection accuracy is higher when several accelerometers 31 are used, the accelerometer 31 is uniformly distributed on the side of the circuit board 20 away from the magnetic member 13, and is electrically connected with the control chip 21, in a specific embodiment, the accelerometer 31 can adopt a three-axis accelerometer 31, the accelerometer 31 can detect the acceleration change of XYZ three axes at the same time, and the sensitivity and detection frequency of the three-axis accelerometer 31 can be set; When the keyboard is in the non-tapping standby state, the linear Hall sensor 22 and the control chip 21 are in the sleep state, and the accelerometer 31 is in the working state, the accelerometer 31 can sense the position change of the keyboard body 10 in the X-axis direction, the Y-axis direction and the Z-axis direction of the space, in a specific embodiment, when the user's finger normally taps the keyboard key cap 11, the accelerometer 31 detects the acceleration change in the Z-axis direction, and the accelerometer 31 generates an interrupt signal to wake up the control chip 21; Since all the linear Hall sensors 22 are powered off when the keyboard is in sleep, the control chip 21 is in a low-power sleep state, and only the accelerometer 31 works, and the accelerometer 31 is used to detect tapping, and the power consumption is in an extremely low state, so that the whole machine is in an extremely low power consumption state when the keyboard is in sleep standby.
[0040] More specifically, since the desktop is knocked or vibrated, the accelerometer 31 can also detect the vibration outside the keyboard, if you only want to wake up the keyboard when the keyboard is knocked, you can set the control chip 21 to set the judgment logic, in a specific embodiment, such as Figure 4 When the keyboard is in a non-knocking state, the system is in a sleep standby state, the user knocks the keyboard or the user moves the keyboard or the user knocks the desktop outside the keyboard, the acceleration detects the acceleration change in the XYZ axis direction of the space and generates an interrupt signal and sends it to the control chip 21, the control chip 21 is awakened by the interrupt signal, at this time, the control chip 21 obtains the use state of all keys by collecting the output voltage of the linear Hall sensor 22, and judges whether a key is pressed, if no key is pressed, the system continues to be in a sleep standby state, if a key is pressed, the control chip 21 and the linear Hall sensor 22 are both awakened, and the key state is normally identified; By designing the accelerometer 31, and setting the logic judgment of the control chip 21, the keyboard in standby state can be woken up by any key, and the keyboard will not be woken up by the movement and vibration outside the keyboard.
[0041] Further, according to customer needs and product definition, when the control chip 21 is not set with judgment logic, the keyboard in sleep standby state can be woken up by moving the keyboard or knocking and vibrating outside the keyboard.
[0042] Please refer to Figures 5-7 When the sensing wake-up piece 30 adopts the on-off Hall sensor 32, the number of on-off Hall sensors 32 is one or more, the on-off Hall sensor 32 is close to the linear Hall sensor 22 and is electrically connected with the control chip 21, the on-off Hall sensor 32 and the linear Hall sensor 22 share the magnetic field generated by the magnetic piece 13, when the keyboard is knocked and used, the on-off Hall sensor 32 detects the magnetic field intensity and outputs different detection electric signals, the detection electric signals are used to wake up the control chip 21 in standby state.
[0043] In a specific implementation, when the sensing wake-up piece 30 adopts the on-off Hall sensor 32, the number of on-off Hall sensors 32 is one or more, the on-off Hall sensor 32 is arranged on the circuit board 20 and is close to the linear Hall sensor 22 and is electrically connected with the control chip 21, the on-off Hall sensor 32 and the linear Hall sensor 22 share the magnetic field generated by the magnetic piece 13, when the user knocks the keyboard main body 10 corresponding to the on-off Hall sensor 32, the on-off Hall sensor 32 detects the change of the magnetic field intensity, the output level is flipped, and the level can be used to wake up the control chip 21, since the keyboard is in sleep state, all linear Hall sensors 22 are powered off, the control chip 21 is in low-power sleep state, and the system only remains the on-off Hall sensor 32 working, while the on-off Hall sensor 32 is used to detect the knocking, the power consumption is in an extremely low state, so that the whole machine is in an extremely low power consumption state when the keyboard is in sleep standby state.
[0044] More specifically, the switch Hall sensor 32 includes a working point and a release point when working after power-on, as shown in the figure. Figure 6 As shown in the figure, the magnetic field strength change range caused by the magnetic piece 13 in the magnetic shaft within the stroke range includes the working point and the release point of the switch Hall sensor 32, so that the output level of the switch Hall sensor appears a flip when the magnetic shaft key is pressed. Figure 7 As shown in the figure, the interrupt signal INT in the switch Hall sensor output wakes up the control chip 21 in the sleep standby state, the control chip 21 wakes up the linear Hall sensor 22, and the control chip 21 reads the input data of the keyboard by reading the output detection value of the linear Hall sensor 22 through the ADC input port. In a specific embodiment, the ADC input port is an interface on the microcontroller (MCU) or a dedicated ADC chip for receiving analog signals, which is responsible for converting analog signals into digital signals.
[0045] Furthermore, the number of switch Hall sensors 32 can be set according to user needs. If there is only one switch Hall sensor 32, the user can only wake up the keyboard by knocking the specific key corresponding to the switch Hall sensor 32. If the switch Hall sensor 32 is set for all keys, the user can knock any key to wake up the keyboard in the sleep standby state.
[0046] The above description is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process change, or direct or indirect application in other related technical fields, which is based on the content of the specification and drawings, is also included in the patent protection scope of the present application.
Claims
1. A wake-up device for reducing the standby power consumption of a magnetic shaft keyboard, characterized in that, The keyboard comprises a keyboard body and a circuit board, the keyboard body is located on one side of the circuit board, the keyboard body comprises a key cap, a key shaft and a magnetic piece, the circuit board is provided with a first magnetic field strength detection piece and a control chip, the key shaft is connected with the key cap and the magnetic piece respectively, the first magnetic field strength detection piece is electrically connected with the control chip; The circuit board is provided with an induction wake-up piece, and the induction wake-up piece is electrically connected with the control chip, the induction wake-up piece comprises an acceleration detection piece or a second magnetic field strength detection piece, and is used for waking up the control chip in a standby state.
2. The wake-up device for reducing the standby power consumption of a magnetic keyboard according to claim 1, wherein, The control chip comprises a standby state, when the control chip is in the standby state, the induction wake-up piece comprises the acceleration detection piece, the acceleration detection piece is used for generating an interrupt signal and waking up the control chip.
3. The wake-up device for reducing the standby power consumption of a magnetic keyboard according to claim 2, wherein, When the induction wake-up piece comprises a second magnetic field strength detection piece, the first magnetic field strength detection piece is located below the magnetic piece, and the second magnetic field strength detection piece is arranged in parallel with the first magnetic field strength detection piece.
4. The wake-up device for reducing the standby power consumption of a magnetic keyboard according to claim 3, wherein, The acceleration detection piece is used for sensing the position change of the keyboard body in X-axis direction, Y-axis direction and Z-axis direction in space, and outputting corresponding sensing electric signals, the sensing electric signals are used for waking up the control chip in the standby state.
5. The wake-up device for reducing the standby power consumption of a magnetic keyboard according to claim 4, wherein, When the keyboard body is displaced, the acceleration detection piece wakes up the control chip, and the control chip is used for judging the action of all the keyboard bodies.
6. The wake-up device for reducing the standby power consumption of a magnetic keyboard according to claim 5, wherein, The second magnetic field strength detection piece is close to the first magnetic field strength detection piece and is electrically connected with the control chip.
7. The wake-up device for reducing the standby power consumption of a magnetic keyboard according to claim 6, wherein, The second magnetic field strength detection piece shares the magnetic field generated by the magnetic piece with the first magnetic field strength detection piece.
8. The wake-up device for reducing the standby power consumption of a magnetic keyboard according to claim 7, wherein, The second magnetic field strength detection piece is used for detecting the magnetic field strength and outputting different detection electric signals, and the detection electric signals are used for waking up the control chip in the standby state.
9. The wake-up device for reducing the standby power consumption of a magnetic keyboard according to claim 8, wherein, Further comprising an elastic piece, the elastic piece is connected with the keyboard body and the circuit board respectively, so that the magnetic piece is close to or far away from the first magnetic field strength detection piece.
10. The wake-up device for reducing the standby power consumption of a magnetic keyboard according to claim 9, wherein, The first magnetic field strength detection piece detects the strength of the magnetic field generated by the magnetic piece and outputs different detection values, and the control chip judges the input value of the keyboard according to the detection values.