CN104035571A - Keyboard capable of detecting contact force and method applied to keyboard for detecting contact force - Google Patents

Abstract

The invention relates to a keyboard capable of detecting contact force and a method for detecting contact force applied to the keyboard. The keyboard includes a plurality of keys, a switch module, a bottom plate and a controller. The switch module includes a first switch unit and a second switch unit, the first switch unit is arranged under the plurality of keys, and the second switch unit is arranged under the first switch unit. The bottom plate is arranged under the switch module to support the switch module. The controller is coupled to the plurality of keys and the switch module, and is used for initializing the plurality of keys to an initial state, detecting the plurality of keys, and when a force is applied to one of the plurality of keys, according to the first switch unit and the second The state of the switching unit determines the value of this force. The present invention uses the controller to determine the value of the force applied to the key according to the states of the first switch unit and the second switch unit. The present invention can detect the value of the force applied to the key, which can improve the disadvantage of the prior art that is not very convenient for a user.

Description

Keyboard capable of detecting contact force and method applied to keyboard to detect contact force

technical field

The invention relates to a keyboard capable of detecting contact force and a method for detecting contact force applied to the keyboard, in particular to a keyboard and method for determining the value of force applied to a key by using a controller in accordance with the state of a switch unit.

Background technique

Any button on the keyboard provided by the prior art can only be operated corresponding to ON and OFF, that is, when the user's finger exerts force on a button on the keyboard, if the If the force of the key on the keyboard is greater than the critical value, the operation of the key is correspondingly opened, causing the controller on the keyboard to transmit the code of the key to the host. Then, the host computer can perform corresponding operations according to the code of the button. For example, when the user executes document editing in a document, the host computer can send the English letter corresponding to the button to the edited file according to the code of the button. within this file.

However, because any button on the keyboard provided by the prior art can only be opened and closed correspondingly, so when the user is playing a computer game, if the objects in the computer game need to continuously launch weapons, the user The finger must continuously press at least one corresponding key to continuously fire the weapon. Thus, the keyboard provided by the prior art is not very convenient for users.

Contents of the invention

In order to solve the above problems, the present invention proposes a keyboard and a method for determining the value of the force applied to the keyboard according to the state of the switch unit by the controller.

In order to achieve the above object, the present invention provides a keyboard capable of detecting contact force, the keyboard includes at least one key, a switch module, a bottom plate and a controller. The switch module includes a first switch unit and a second switch unit, the first switch unit is arranged under the button, the second switch unit is arranged under the first switch unit; the bottom plate is arranged under the switch module , the bottom plate is used to support the switch module; the controller is coupled to the button and the switch module, and the controller is used to initialize the button to an initial state, detect the button and when one of the buttons is applied When force is applied, the controller determines the value of the force according to the states of the first switch unit and the second switch unit.

As an optional technical solution, each of the keys includes a support unit and a membrane switch layer, the support unit is used to support the keycap of the key to move up and down; the membrane switch layer is arranged on the first switch unit.

As an optional technical solution, the upper limit of detection of the first switch unit is smaller than the upper limit of detection of the second switch unit.

As an optional technical solution, the controller sequentially controls the first switch unit and the second switch unit to detect the force; or, the controller sequentially controls the second switch unit and the first switch unit to detect this force.

As an optional technical solution, the controller is also used to transmit the value of the applied force and the code of the key to the host.

In the touch force detectable keyboard of the present invention, the controller is used to determine the value of the force applied to one of the keys according to the states of the first switch unit and the second switch unit in sequence, or to determine the value of the force applied to one of the keys according to the state of the second switch unit in sequence. and the state of the first switch unit to determine the value of the force applied to the key. The keyboard provided by the present invention can detect the value of the force applied to the key, which can improve the disadvantage that the prior art is not very convenient for a user.

In addition, the present invention proposes a method for detecting contact force applied to a keyboard, the keyboard includes at least one key, a switch module, a base plate and a controller, wherein the switch module includes a first switch unit and a second switch unit, the The first switch unit is disposed below the key, and the second switch unit is disposed below the first switch unit; the controller is coupled to the key and the switch module, and the method includes the controller initializing the key at an initial state; the controller detects the button; when one of the buttons is applied with force, the controller determines the value of the force according to the states of the first switch unit and the second switch unit.

As an optional technical solution, when the force is applied to one of the keys, the controller determines the value of the force according to the states of the first switch unit and the second switch unit, including when the first switch When the unit is closed, the controller determines the applied force as the first force.

As an optional technical solution, the method further includes the controller sending the first force and the key code to the host.

As an optional technical solution, when the force is applied to one of the keys, the controller determines the value of the force according to the states of the first switch unit and the second switch unit, including when the first switch When the unit is turned on, the controller detects whether the second switch unit is turned on; the controller executes a first corresponding action according to the first detection result.

As an optional technical solution, the controller performing the first corresponding action according to the first detection result includes when the second switch unit is closed, the controller determines that the acting force is a second force, wherein the first The second force is greater than the first force.

As an optional technical solution, the method includes the controller sending the second force and the key code to the host.

As an optional technical solution, the controller performing the first corresponding action according to the first detection result includes determining the acting force as a third force when the second switch unit is turned on, wherein the The third force is greater than the second force.

As an optional technical solution, the method further includes the controller sending the third force and the key code to the host.

As an optional technical solution, when the force is applied to one of the keys, the controller determines the value of the force according to the states of the first switch unit and the second switch unit, including when the second switch When the unit is turned on, the controller determines the force as the third force.

As an optional technical solution, the method further includes the controller sending the third force and the key code to the host.

As an optional technical solution, when the force is applied to one of the keys, the controller determines the value of the force according to the states of the first switch unit and the second switch unit, including when the second switch When the unit is turned off, the controller detects whether the first switch unit is turned on; the controller executes a second corresponding action according to the second detection result.

As an optional technical solution, the controller performing the second corresponding action according to the second detection result includes when the first switch unit is turned on, the controller determines that the acting force is a second force, wherein the first The second force is smaller than the third force.

As an optional technical solution, the method further includes the controller sending the second force and the key code to the host.

As an optional technical solution, the controller performing the second corresponding action according to the second detection result includes when the first switch unit is closed, the controller determines that the acting force is a first force, wherein the second The first force is less than the second force.

As an optional technical solution, the method further includes the controller sending the first force and the key code to the host.

In the method for detecting contact force applied to a keyboard of the present invention, the controller is used to determine the value of the force applied to one of the keys according to the states of the first switch unit and the second switch unit in sequence, or to determine the value of the force applied to one of the keys according to the state of the second switch unit in sequence The state of the switch unit and the first switch unit determines the value of the force applied to the key. Therefore, because the method provided by the present invention can detect the value of the force applied to the key, the present invention can improve the shortcomings of the prior art that are not very convenient for users.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

FIG. 1 is a top view of an embodiment of a keyboard capable of detecting contact force of the present invention;

2 is a schematic diagram of a cross-section of an embodiment of a keyboard capable of detecting contact force of the present invention;

3 is a schematic diagram of a cross-section of another embodiment of a keyboard capable of detecting contact force of the present invention;

4A and 4B are flowcharts of an embodiment of a method for detecting contact force applied to a keyboard of the present invention;

5A and 5B are flowcharts of another embodiment of the method for detecting contact force applied to a keyboard of the present invention.

Detailed ways

Please refer to FIG. 1 and FIG. 2 , FIG. 1 is a schematic top view of an embodiment of a keyboard 100 capable of detecting contact force of the present invention, and FIG. 2 is a schematic diagram of a cross-section of the keyboard 100 . The keyboard 100 includes a plurality of keys 102 (as shown in FIG. 1 ), a switch module 104 (as shown in FIG. 2 ), a bottom plate 106 (as shown in FIG. 2 ) and a controller 108 (as shown in FIG. 1 ), for convenience Note, FIG. 2 only shows one button 1022 among the plurality of buttons 102 . As shown in FIG. 2 , the button 1022 includes a keycap 10222 , a supporting unit 10224 and a membrane switch layer 10226 . The supporting unit 10224 is used for supporting the keycap 10222 of the button 1022 to move up and down. The switch module 104 includes a first switch unit 1042 and a second switch unit 1044 , wherein the membrane switch layer 10226 is disposed on the first switch unit 1042 , and the second switch unit 1044 is disposed below the first switch unit 1042 . However, the present invention is not limited to the switch module 104 including only the first switch unit 1042 and the second switch unit 1044 , that is, the switch module 104 may include more than two switch units. The bottom plate 106 is disposed under the switch module 104 , and the bottom plate 106 is used to support the switch module 104 . That is, as shown in FIG. 2 , each of the plurality of keys 102 is a shared switch module 104 . In addition, since each of the plurality of keys 102 has the same structure, the present invention only utilizes the key 1022 for illustration. As shown in FIG. 1 and FIG. 2, the controller 108 is coupled to the plurality of buttons 102 and the switch module 104, and the controller 108 is used to initialize the plurality of buttons 102 to an initial state (that is, each of the plurality of buttons 102 The button is not pressed), detect a plurality of buttons 102, and when a force is applied to the button 1022, determine the value of the force applied to the button 1022 according to the state of the first switch unit 1042 and the second switch unit 1044 , wherein the detection upper limit of the first switch unit 1042 is smaller than the detection upper limit of the second switch unit 1044 . But in another embodiment of the present invention, the detection upper limit of the first switch unit 1042 is equal to the detection upper limit of the second switch unit 1044, or the detection upper limit of the first switch unit 1042 is greater than the detection limit of the second switch unit 1044 upper limit.

As shown in FIG. 2, when a force is applied to the key 1022, the controller 108 can determine the value of the force applied to the key 1022 according to the states (on and off) of the second switch unit 1044 and the first switch unit 1042 in sequence. . For example, when the second switch unit 1044 is turned on, because the second switch unit 1044 is turned on by the force applied to the button 1022 and the first switch unit 1042 and the membrane switch layer 10226 are located on the second switch unit 1044 as shown in FIG. Therefore, the first switch unit 1042 and the membrane switch layer 10226 are also opened by the force applied to the key 1022, so that the controller 108 determines that the force applied to the key 1022 is the third force, that is, the third force can simultaneously open the membrane switch layer 10226 , the first switch unit 1042 and the second switch unit 1044; for example, when the second switch unit 1044 is closed, the controller 108 detects whether the first switch unit 1042 is opened, if the second switch unit 1044 is closed and the first switch unit 1042 is opened , it means that the membrane switch layer 10226 is also opened by the force applied to the key 1022, so that the controller 108 determines that the force applied to the key 1022 is the second force, that is, the second force can simultaneously open the membrane switch layer 10226 and the first Switch unit 1042, wherein because the second force can only open the membrane switch layer 10226 and the first switch unit 1042 at the same time, so the second force is smaller than the above-mentioned third force; for example, when the second switch unit 1044 is closed, the controller 108 detects the first Whether the first switch unit 1042 is turned on, if both the first switch unit 1042 and the second switch unit 1044 are turned off, it means that the force applied to the key 1022 can only open the membrane switch layer 10226, so that the controller 108 determines the force applied to the key 1022 The active force is the first force, wherein because the first force can only open the membrane switch layer 10226, the first force is smaller than the above-mentioned second force.

It should be noted that in the present invention, the controller 108 determines the value of the force applied to the key 1022, not the specific value of the force, but the range within which the force falls. In actual operation, it can be determined in advance Determine the numerical ranges of the three forces: the first numerical range, the second numerical range, and the third numerical range. The three numerical ranges may not overlap, wherein the first numerical range corresponds to the first force, and the second numerical range corresponds to the second force. The third value range corresponds to the third force. When the force applied to the button 1022 falls within the first value range, the force is determined to be the first force. Similarly, when the force applied to the button 1022 falls within the second value range, the force is determined to be the first force. The force is the second force; when the force applied on the button 1022 falls within the third value range, then it is determined that the force is the third force.

In addition, as shown in FIG. 2, when a force is applied to the key 1022, the controller 108 can also determine the force applied to the key 1022 according to the states (on and off) of the first switch unit 1042 and the second switch unit 1044 in sequence. force value. For example, when a force is applied to the button 1022 and the first switch unit 1042 is closed, it means that the force applied to the button 1022 can only open the membrane switch layer 10226, so that the controller 108 determines that the force applied to the button 1022 is the first force; for example When the first switch unit 1042 is turned on, the controller 108 detects whether the second switch unit 1044 is turned on. If the second switch unit 1044 is turned off and the first switch unit 1042 is turned on, it means that the membrane switch layer 10226 and the first switch unit 1042 At the same time, the active force applied to the key 1022 is turned on, so that the controller 108 determines that the active force applied to the key 1022 is the second force, wherein because the second force can open the membrane switch layer 10226 and the first switch unit 1042 at the same time, the second The force is greater than the above-mentioned first force; for example, when the first switch unit 1042 is turned on, the controller 108 detects whether the second switch unit 1044 is turned on, if both the first switch unit 1042 and the second switch unit 1044 are turned on, because the second switch The unit 1044 is turned on by the force applied to the button 1022 and as shown in FIG. The two switch units 1044 are turned on by the force applied to the button 1022 at the same time, so that the controller 108 determines that the force applied to the button 1022 is the third force, wherein the membrane switch layer 10226 and the first switch unit 1042 can be turned on at the same time because of the third force and the second switch unit 1044, so the third force is greater than the above-mentioned second force.

In addition, the controller 108 can determine whether to transmit the force applied to the key 1022 and the code of the key 1022 to the host according to the settings of the host connected to the keyboard 100 . For example, if the user logging into the host is a child, as long as the controller 108 determines that the force applied to the button 1022 is the first force, the controller 108 will send the first force and the code of the button 1022 to the host (of course, when the control When the controller 108 determines that the force applied to the button 1022 is the second force, the controller 108 will also send the second force and the code of the button 1022 to the host; when the controller 108 determines that the force applied to the button 1022 is the third force , the controller 108 will also send the third force and the code of the button 1022 to the host); if the user logging into the host is an adult, when the controller 108 determines that the force applied to the button 1022 is the third force, the controller 108 will Send the third force and the code of the button 1022 to the host.

Please refer to FIG. 3 . FIG. 3 is a schematic cross-sectional view of another embodiment of a touch force detectable keyboard 300 of the present invention. As shown in FIG. 3 , the difference between the keyboard 300 and the keyboard 100 is that at least one key 3022 among the plurality of keys of the keyboard 300 includes a keycap 30222 , a support unit 30224 , a membrane switch layer 30226 , a first switch unit 30228 and a second switch unit 30230 , that is, in actual operation, not every key among the plurality of keys of the keyboard 300 includes the first switch unit and the second switch unit, and the user can determine it according to the needs. In addition, the present invention is not limited to the button 3022 including only the first switch unit 30228 and the second switch unit 30230 , that is, the button 3022 may include more than two switch units. The support unit 30224 is used to support the up and down movement of the keycap 30222 of the button 3022, the membrane switch layer 30226 is arranged under the support unit 30224, the first switch unit 30228 is arranged under the membrane switch layer 30226, and the second switch unit 30230 is arranged under the second membrane switch layer 30226. A switch unit 30228 below. The bottom plate 106 is disposed under the plurality of keys of the keyboard 300 , and the bottom plate 106 is used to support the plurality of keys of the keyboard 300 . In addition, in this embodiment, the plurality of keys of the keyboard 300 all include the first switch unit and the second switch unit, because the structure of each key in the plurality of keys of the keyboard 300 is the same, so the present invention only uses the key 3022 for illustration . The controller 108 is coupled to the plurality of keys of the keyboard 300, at least one switch unit and at least one second switch unit. Each key of the key is not pressed), detect the plurality of keys of the keyboard 300, and when the key 3022 is applied force, according to the state of the first switch unit 30228 and the second switch unit 30230, determine the state of the key applied to the key 3022, wherein the detection upper limit of the first switch unit 30228 is smaller than the detection upper limit of the second switch unit 30230. But in another embodiment of the present invention, the detection upper limit of the first switch unit 30228 is equal to the detection upper limit of the second switch unit 30230, or the detection upper limit of the first switch unit 30228 is greater than the detection limit of the second switch unit 30230 upper limit.

As shown in FIG. 3, when a force is applied to the key 3022, the controller 108 can determine the force applied to the key 3022 according to the states (on and off) of the second switch unit 30230 and the first switch unit 30228 in sequence. value. For example, when the second switch unit 30230 is turned on, because the second switch unit 30230 is turned on by the force applied to the button 3022 and the first switch unit 30228 and the membrane switch layer 30226 are located on the second switch unit 30230 as shown in FIG. , so the first switch unit 30228 and the membrane switch layer 30226 are also opened by the force applied to the key 3022, so that the controller 108 determines that the force applied to the key 3022 is the third force, that is, the third force can simultaneously open the membrane switch Layer 30226, first switch unit 30228 and second switch unit 30230; for example, when the second switch unit 30230 is turned off, the controller 108 detects whether the first switch unit 30228 is turned on, if the second switch unit 30230 is turned off and the first switch unit 30228 is turned on, which means that the membrane switch layer 30226 is also opened by the force applied to the key 3022, so that the controller 108 determines that the force applied to the key 3022 is the second force, that is, the second force can simultaneously open the membrane switch layer 30226 and The first switch unit 30228, wherein because the second force can only open the membrane switch layer 30226 and the first switch unit 30228 at the same time, the second force is smaller than the above-mentioned third force; for example, when the second switch unit 30230 is closed, the controller 108 detects Detect whether the first switch unit 30228 is open, if both the first switch unit 30228 and the second switch unit 30230 are closed, it means that the force applied to the key 3022 can only open the membrane switch layer 30226, so the controller 108 determines that the force applied to the key 3022 The active force is the first force, wherein because the first force can only open the membrane switch layer 30226, the first force is smaller than the above second force.

In addition, as shown in FIG. 3 , when the key 3022 is applied with force, the controller 108 can also determine the force applied to the key 3022 according to the states (on and off) of the first switch unit 30228 and the second switch unit 30230 in sequence. force value. For example, when a force is applied to the key 3022 and the first switch unit 30228 is closed, it means that the force applied to the key 3022 can only open the membrane switch layer 30226, so that the controller 108 determines that the force applied to the key 3022 is the first force; For example, when the first switch unit 30228 is turned on, the controller 108 detects whether the second switch unit 30230 is turned on. If the second switch unit 30230 is turned off and the first switch unit 30228 is turned on, it means that the membrane switch layer 30226 and the first switch unit 30228 is turned on by the force applied to the key 3022 at the same time, so that the controller 108 determines that the force applied to the key 3022 is the second force, wherein because the second force can simultaneously open the membrane switch layer 30226 and the first switch unit 30228, so the second force The second force is greater than the above-mentioned first force; for example, when the first switch unit 30228 is turned on, the controller 108 detects whether the second switch unit 30230 is turned on, if both the first switch unit 30228 and the second switch unit 30230 are turned on, because the second The switch unit 30230 is turned on by the force applied to the button 3022 and as shown in FIG. The second switch unit 30230 is turned on by the force applied to the button 3022 at the same time, so the controller 108 determines that the force applied to the button 3022 is the third force, wherein the membrane switch layer 30226 and the first switch unit can be turned on at the same time because of the third force 30228 and the second switch unit 30230, so the third force is greater than the above second force.

In addition, the rest of the operating principles of the key 3022 of the keyboard 300 are the same as those of the key 1022 , and will not be repeated here.

Please refer to FIG. 1 , FIG. 2 , FIG. 3 , FIG. 4A and FIG. 4B , and FIG. 4A and FIG. 4B are flowcharts of an embodiment of a method for detecting contact force applied to a keyboard of the present invention. The method of Fig. 4A and Fig. 4B utilizes the display keyboard 100 illustration of Fig. 1, Fig. 2, and detailed steps are as follows:

Step 400: start;

Step 402: the controller 108 initializes a plurality of keys of the keyboard to an initial state;

Step 404: the controller 108 detects a plurality of keys;

Step 406: When a force is applied to one of the plurality of buttons, the controller 108 detects whether the first switch unit is turned on; if yes, go to step 408; if not, go to step 422;

Step 408: The controller 108 detects whether the second switch unit is turned on; if yes, go to step 410; if not, go to step 416;

Step 410: the controller 108 determines that the force applied to the key is a third force;

Step 412: The controller 108 determines whether to transmit the code of the third force and the button to the host; if yes, go to step 414; if not, go to step 404;

Step 414: the controller 108 transmits the code of the third force and the button to the host, and skips to step 404;

Step 416: the controller 108 determines that the force applied to the key is the second force;

Step 418: The controller 108 determines whether to transmit the second force and the code of the button to the host; if yes, proceed to step 420; if no, skip to step 404;

Step 420: the controller 108 transmits the code of the second force and the key to the host, and skips to step 404;

Step 422: the controller 108 determines that the force applied to the key is the first force;

Step 424: The controller 108 determines whether to transmit the first force and the code of the key to the host; if yes, proceed to step 426; if no, skip to step 404;

Step 426 : The controller 108 transmits the first force and the code of the key to the host, and skips to step 404 .

Taking Fig. 2 as an example, in the embodiment of Fig. 4A and Fig. 4B, when the key 1022 is exerted force, the controller 108 can determine the The value of the force applied to the button 1022. In step 402 , the controller 108 initializes the plurality of keys 102 to an initial state (that is, each of the plurality of keys 102 is not pressed). In step 422, as shown in FIG. 2, when the key 1022 is applied with force and the first switch unit 1042 is closed, it means that the force applied to the key 1022 can only open the membrane switch layer 10226, so the controller 108 determines to apply The force on key 1022 is the first force. In step 408 , as shown in FIG. 2 , when the first switch unit 1042 is turned on, the controller 108 detects whether the second switch unit 1044 is turned on. In step 416, as shown in FIG. 2, when the second switch unit 1044 is turned off and the first switch unit 1042 is turned on, it means that the membrane switch layer 10226 and the first switch unit 1042 are simultaneously turned on by the force applied to the key 1022, Therefore, the controller 108 determines that the force applied to the button 1022 is the second force, wherein the second force is greater than the first force because the second force can simultaneously open the membrane switch layer 10226 and the first switch unit 1042 . In step 408 , as shown in FIG. 2 , when the first switch unit 1042 is turned on, the controller 108 detects whether the second switch unit 1044 is turned on. In step 410, as shown in FIG. 2, when both the first switch unit 1042 and the second switch unit 1044 are turned on, because the second switch unit 1044 is turned on by the force applied to the button 1022 and the first switch unit 1044 is turned on as shown in FIG. The switch unit 1042 and the membrane switch layer 10226 are located on the second switch unit 1044, so the membrane switch layer 10226, the first switch unit 1042 and the second switch unit 1044 are simultaneously turned on by the force applied to the button 1022, so that the controller 108 It is determined that the force applied to the button 1022 is the third force, wherein the third force is greater than the above-mentioned second force because the third force can simultaneously open the membrane switch layer 10226 , the first switch unit 1042 and the second switch unit 1044 . In addition, in step 412 , step 418 , and step 424 , the controller 108 may determine whether to transmit the force applied to the key 1022 and the code of the key 1022 to the host according to the settings of the host connected to the keyboard 100 . In step 414, step 420, and step 426, if the user logging into the host computer is a child, as long as the controller 108 determines that the force applied to the key 1022 is the first force, the controller 108 will transmit the first force and the key. 1022 code to the host (of course, when the controller 108 determines that the force applied to the button 1022 is the second force, the controller 108 will also send the second force and the code of the button 1022 to the host; When the active force of the button 1022 is the third force, the controller 108 will also send the third force and the code of the button 1022 to the host); When the force is the third force, the controller 108 transmits the third force and the code of the button 1022 to the host.

Taking Fig. 3 as an example, in the embodiment of Fig. 4A and Fig. 4B, when the button 3022 is applied with force, the controller 108 can sequentially according to the states (on and off) of the first switch unit 30228 and the second switch unit 30230, The value of the force applied to the key 3022 is determined. In step 422, as shown in FIG. 3, when the key 3022 is applied with force and the first switch unit 30228 is closed, it means that the force applied to the key 3022 can only open the membrane switch layer 30226, so the controller 108 determines to apply The force acting on the button 3022 is the first force. In step 408 , as shown in FIG. 3 , when the first switch unit 30228 is turned on, the controller 108 detects whether the second switch unit 30230 is turned on. In step 416, as shown in FIG. 3, when the second switch unit 30230 is turned off and the first switch unit 30228 is turned on, it means that the membrane switch layer 30226 and the first switch unit 30228 are simultaneously turned on by the force applied to the button 3022, Therefore, the controller 108 determines that the force applied to the button 3022 is the second force, wherein the second force is greater than the first force because the second force can simultaneously open the membrane switch layer 30226 and the first switch unit 30228 . In step 408 , as shown in FIG. 3 , when the first switch unit 30228 is turned on, the controller 108 detects whether the second switch unit 30230 is turned on. In step 410, as shown in FIG. 3, when both the first switch unit 30228 and the second switch unit 30230 are turned on, because the second switch unit 30230 is turned on by the force applied to the button 3022 and the first switch unit 30230 is turned on as shown in FIG. The switch unit 30228 and the membrane switch layer 30226 are located on the second switch unit 30230, so the membrane switch layer 30226, the first switch unit 30228 and the second switch unit 30230 are simultaneously turned on by the force applied to the button 3022, so that the controller 108 It is determined that the force applied to the button 3022 is the third force, wherein the third force is greater than the second force because the third force can simultaneously open the membrane switch layer 30226 , the first switch unit 30228 and the second switch unit 30230 . In addition, the remaining operation methods of the key 3022 of the keyboard 300 are the same as those of the key 1022 , and will not be repeated here.

Please refer to FIG. 1 , FIG. 2 , FIG. 3 , FIG. 5A and FIG. 5B . FIG. 5A and FIG. 5B are flowcharts of another embodiment of the method for detecting contact force applied to a keyboard of the present invention. The method of Fig. 5A and Fig. 5B utilizes the display keyboard 100 illustration of Fig. 1, Fig. 2, and detailed steps are as follows:

Step 500: start;

Step 502: the controller 108 initializes a plurality of keys of the keyboard to an initial state;

Step 504: the controller 108 detects a plurality of keys;

Step 506: When a force is applied to one of the plurality of buttons, the controller 108 detects whether the second switch unit is turned on; if yes, go to step 508; if not, go to step 514;

Step 508: the controller 108 determines that the force applied to the key is the third force;

Step 510: The controller 108 decides whether to transmit the third force and the key code to the host; if yes, go to step 512; if not, go to step 504;

Step 512: The controller 108 transmits the code of the third force and the button to the host, and skips to step 504;

Step 514: The controller 108 detects whether the first switch unit is turned on; if yes, go to step 516; if not, go to step 522;

Step 516: the controller 108 determines that the force applied to the key is the second force;

Step 518: The controller 108 decides whether to transmit the second force and the key code to the host; if yes, go to step 520; if not, go to step 504;

Step 520: the controller 108 transmits the second force and the code of the key to the host, and skips to step 504;

Step 522: the controller 108 determines that the force applied to the key is the first force;

Step 524: The controller 108 decides whether to transmit the first force and the code of the button to the host; if yes, go to step 526; if not, go to step 504;

Step 526 : The controller 108 transmits the first force and the code of the key to the host, and skips to step 504 .

Taking FIG. 2 as an example, the difference between the embodiment of FIG. 5A and FIG. 5B and the embodiment of FIG. 4A and FIG. The state of the switch unit 1042 (on or off) determines the value of the force applied to the key 1022 . In step 508, when the second switch unit 1044 is turned on, because the second switch unit 1044 is turned on by the force applied to the button 1022 and as shown in FIG. unit 1044, so the first switch unit 1042 and membrane switch layer 10226 are also turned on by the force applied to the key 1022, so that the controller 108 determines that the force applied to the key 1022 is the third force, that is, the third force can be The membrane switch layer 10226 , the first switch unit 1042 and the second switch unit 1044 are simultaneously turned on. In step 514, when the second switch unit 1044 is turned off, the controller 108 detects whether the first switch unit 1042 is turned on. In step 516, when the second switch unit 1044 is turned off and the first switch unit 1042 is turned on, it means that the membrane switch layer 10226 is also turned on by the force applied to the key 1022, so that the controller 108 determines the force applied to the key 1022 is the second force, that is, the second force can open the membrane switch layer 10226 and the first switch unit 1042 at the same time, wherein because the second force can only open the membrane switch layer 10226 and the first switch unit 1042 at the same time, the second force is smaller than the above-mentioned third force. In step 514, when the second switch unit 1044 is turned off, the controller 108 detects whether the first switch unit 1042 is turned on. In step 522, when both the first switch unit 1042 and the second switch unit 1044 are closed, it means that the force applied to the key 1022 can only open the membrane switch layer 10226, causing the controller 108 to determine the force applied to the key 1022 is the first force, wherein because the first force can only open the membrane switch layer 10226, the first force is smaller than the above-mentioned second force. In addition, the rest of the operating principles of the embodiment of FIG. 5A and FIG. 5B are the same as those of the embodiment of FIG. 4A and FIG. 4B , and will not be repeated here.

Taking FIG. 3 as an example, the difference between the embodiment of FIG. 5A and FIG. 5B and the embodiment of FIG. 4A and FIG. The state of the switch unit 30228 (on or off) determines the value of the force applied to the key 3022 . In step 508, when the second switch unit 30230 is turned on, because the second switch unit 30230 is turned on by the force applied to the button 3022 and the first switch unit 30228 and the membrane switch layer 30226 are located on the second switch as shown in FIG. unit 30230, so the first switch unit 30228 and membrane switch layer 30226 are also turned on by the force applied to the button 3022, so that the controller 108 determines that the force applied to the button 3022 is the third force, that is, the third force can be The membrane switch layer 30226, the first switch unit 30228 and the second switch unit 30230 are turned on simultaneously. In step 514, when the second switch unit 30230 is turned off, the controller 108 detects whether the first switch unit 30228 is turned on. In step 516, when the second switch unit 30230 is turned off and the first switch unit 30228 is turned on, it means that the membrane switch layer 30226 is also turned on by the force applied to the key 3022, so that the controller 108 determines the force applied to the key 3022 is the second force, that is, the second force can open the membrane switch layer 30226 and the first switch unit 30228 at the same time, wherein because the second force can only open the membrane switch layer 30226 and the first switch unit 30228 at the same time, the second force is smaller than the above-mentioned third force. In step 514, when the second switch unit 30230 is turned off, the controller 108 detects whether the first switch unit 30228 is turned on. In step 522, when both the first switch unit 30228 and the second switch unit 30230 are closed, it means that the force applied to the key 3022 can only open the membrane switch layer 30226, causing the controller 108 to determine the force applied to the key 3022 is the first force, wherein because the first force can only open the membrane switch layer 30226, the first force is smaller than the above-mentioned second force. In addition, the remaining operation methods of the key 3022 of the keyboard 300 are the same as those of the key 1022 , and will not be repeated here.

In summary, the present invention provides a keyboard capable of detecting contact force and a method for detecting contact force applied to the keyboard is to use the controller to determine the state of the first switch unit and the second switch unit in sequence. The value of the active force applied to the key, or the value of the active force applied to the key is determined according to the states of the second switch unit and the first switch unit in sequence. Therefore, because the keyboard provided by the present invention can detect the value of the force applied to the keys, the present invention can improve the disadvantages of the prior art that are not very convenient for users.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes All changes and modifications should belong to the scope of protection of the appended claims of the present invention.

Claims (20)

1. A keyboard capable of detecting contact force, characterized in that the keyboard comprises: at least one key; The switch module includes a first switch unit and a second switch unit, the first switch unit is arranged under the button, and the second switch unit is arranged under the first switch unit; a bottom plate, arranged below the switch module, the bottom plate is used to support the switch module; and a controller, coupled to the button and the switch module, the controller is used to initialize the button to an initial state, detect the button and when one of the buttons is applied force, the controller according to the first The states of the switch unit and the second switch unit determine the value of the acting force. 2. The keyboard according to claim 1, wherein each key in the keys comprises: a support unit, used to support the up and down movement of the keycap of the key; and The membrane switch layer is arranged on the first switch unit. 3. The keyboard according to claim 1, wherein the detection upper limit of the first switch unit is smaller than the detection upper limit of the second switch unit. 4. The keyboard according to claim 1, characterized in that: the controller sequentially controls the first switch unit and the second switch unit to detect the force; or, the controller sequentially controls the second switch unit The switch unit and the first switch unit detect the acting force. 5. The keyboard according to claim 1, wherein the controller is further configured to transmit the force value and the key code to the host. 6. A method for detecting contact force applied to a keyboard, the keyboard comprising at least one key, a switch module, a base plate and a controller, wherein the switch module comprises a first switch unit and a second switch unit, the first switch The unit is arranged under the button, and the second switch unit is arranged under the first switch unit; the controller is coupled to the button and the switch module, and the method is characterized in that the method includes: The controller initializes the key to an initial state; the controller detects the key; and When a force is applied to one of the keys, the controller determines the value of the force according to the states of the first switch unit and the second switch unit. 7. The method according to claim 6, wherein when the force is applied to one of the keys, the controller determines the force according to the states of the first switch unit and the second switch unit Values for include: When the first switch unit is turned off, the controller determines the acting force as the first force. 8. The method according to claim 7, characterized in that: the method further comprises: The controller sends the first force and the key code to the host. 9. The method according to claim 6, wherein when the force is applied to one of the keys, the controller determines the force according to the states of the first switch unit and the second switch unit Values for include: When the first switch unit is turned on, the controller detects whether the second switch unit is turned on; and The controller executes a first corresponding action according to the first detection result. 10. The method according to claim 9, wherein the controller performing the first corresponding action according to the first detection result comprises: When the second switch unit is turned off, the controller determines that the acting force is a second force, wherein the second force is greater than the first force. 11. The method according to claim 10, characterized in that: the method comprises: The controller sends the second force and the key code to the host. 12. The method according to claim 9, wherein the controller performing the first corresponding action according to the first detection result comprises: When the second switch unit is turned on, the controller determines that the acting force is a third force, wherein the third force is greater than the second force. 13. The method according to claim 12, characterized in that: the method further comprises: The controller sends the third force and the key code to the host. 14. The method according to claim 6, wherein when the force is applied to one of the keys, the controller determines the force according to the states of the first switch unit and the second switch unit Values for include: When the second switch unit is turned on, the controller determines that the acting force is a third force. 15. The method according to claim 14, characterized in that: the method further comprises: The controller sends the third force and the key code to the host. 16. The method according to claim 6, wherein when the force is applied to one of the keys, the controller determines the force according to the states of the first switch unit and the second switch unit Values for include: When the second switch unit is turned off, the controller detects whether the first switch unit is turned on; and The controller executes a second corresponding action according to the second detection result. 17. The method according to claim 16, wherein the controller performing the second corresponding action according to the second detection result comprises: When the first switch unit is turned on, the controller determines that the acting force is a second force, wherein the second force is smaller than the third force. 18. The method according to claim 17, characterized in that: the method further comprises: The controller sends the second force and the key code to the host. 19. The method according to claim 16, wherein the controller performing the second corresponding action according to the second detection result comprises: When the first switch unit is turned off, the controller determines that the acting force is a first force, wherein the first force is smaller than the second force. 20. The method according to claim 19, characterized in that: the method further comprises: The controller sends the first force and the key code to the host.