WO2013060059A1

WO2013060059A1 - Air mouse and control method thereof

Info

Publication number: WO2013060059A1
Application number: PCT/CN2011/082516
Authority: WO
Inventors: 龙涛; 刘正东; 龙江; 唐元浩; 严松
Original assignee: 江苏惠通集团有限责任公司
Priority date: 2011-10-25
Filing date: 2011-11-21
Publication date: 2013-05-02
Also published as: CN102339149A; CN102339149B

Abstract

An air mouse and control method thereof, the air mouse comprising a touch key structure and a control device; the touch key structure comprises: a metal touch panel provided with a plurality of metal keys thereon, the keys and the touch panel being isolated by an insulation layer, and the touch panel being grounded; and a detection board below the touch panel, the detection board being provided with a plurality of electrodes thereon corresponding to the positions of the keys; the detection board and the touch panel are isolated by insulation; the control device connected to each electrode on the detection board detects the charge transfer of each electrode to obtain a corresponding charge sample value, identifies the touch operation, and generates an identification control signal according to the identification result so as to control the operation of the air mouse. The air mouse has better induction range restraint effect, thus avoiding the interference from adjacent keys during touch identification.

Description

Space mouse and its control method

The present application claims priority to Chinese Patent Application No. 201110328921.7, entitled "Space Mouse and Its Control Method", filed on October 25, 2011, the entire contents of which is incorporated herein by reference.

Technical field

The invention relates to touch sensing technology, in particular to a space mouse and a control method thereof.

Background technique

At present, the mouse devices on the market can be divided into two types according to the principle of their operation, one is a ball mouse, and the other is an optical mouse. Among them, the ball mouse uses the moving direction and path of the converted ball on the placed desktop or plane to control the pointing position of the cursor displayed in the computer system; and the optical mouse uses the generated light on the desktop or plane. The reflection caused by it is used for its control. However, most of the current mouse devices still use the traditional mechanical button structure, which affects the user's experience.

In fact, touch-sensitive buttons have been gradually adopted on the market to replace traditional mechanical buttons. Among them, the design of capacitive touch buttons is also a hot spot in touch-sensitive button technology.

The capacitive touch button systems that are commonly used today use plastic as the material of the touch panel, and generally do not contain metal components, so as to avoid triggering of misalignment. The plastic panel has a PCB board (printed circuit board) sensing disc. By touching the plastic panel directly above the PCB board sensing disc, the button can be triggered to realize the touch operation. However, for the existing capacitive touch button system, if the panel material is made of metal material or the panel material contains metal components, the touch will trigger the button at any position of the panel, which cannot identify which button the trigger is assigned to. , which will trigger a touch operation error and affect the user's use.

Therefore, how to realize the use of a metal material or a metal-containing panel in the touch button structure of the space mouse and achieve the purpose of accurately recognizing the touch becomes a technical problem to be solved.

Summary of the invention

The present invention provides a space mouse using a metal material or a panel containing a metal component and a control method thereof to improve the accuracy of touch recognition.

In order to solve the above problems, the present invention provides a space mouse, including: a touch button structure and a control device, The touch button structure includes: a metal touch panel, the touch panel has a plurality of metal buttons, the button and the touch panel are separated by an insulating layer, the touch panel is grounded; and the touch panel is detected The detecting board has a plurality of electrodes corresponding to the position of the button, the detecting board is insulated from the touch panel, and the area between the plurality of buttons and the corresponding electrodes constitutes a flat electric valley.

The control device is connected to each electrode on the detecting board, detects a charge transfer condition on each electrode to obtain a corresponding charge sample value, identifies a touch operation, and generates an identification control signal according to the recognition result to control the The operation of the space mouse, wherein the detecting includes:

When the touch button structure faces a touch or a proximity touch, the number of times the voltage corresponding to the total amount of charge transferred from each electrode reaches the reference voltage is recorded;

The number of times the voltage corresponding to the total amount of charge transferred on each electrode reaches the reference voltage is used as a charge sample value of the button corresponding to the electrode when the touch button structure faces a touch or a proximity touch;

A button having a charge sample value smaller than the touch sensing threshold is recognized as a touched button.

Optionally, the control device includes:

a plurality of unit capacitors respectively connected to respective electrodes in the touch button structure;

a plurality of voltage detecting and comparing units respectively connected to the plurality of unit capacitors to detect a voltage across the corresponding unit capacitor, and output a counting signal when the voltage across the unit capacitor reaches a reference voltage; the counting unit is connected to the plurality of The voltage detecting and comparing unit counts the counting signals output by the voltage detecting and comparing units, and sends the count values of the counting signals output by the voltage detecting and comparing units to the identification analyzing unit;

The identification analysis unit uses the count value of the count signal output by each voltage detection and comparison unit as the charge sample value of the button corresponding to each electrode when the touch button structure faces a touch or proximity touch; and the charge sample value is smaller than the touch sensing threshold. The button is recognized as a touched button; the identification information is sent to the operation control unit;

The operation control unit receives the identification information and generates an identification control signal to control the operation of the space mouse according to the preset function identified as being touched.

Optionally, the space mouse further includes: a light source located under the plurality of keys, wherein the light source is connected to the control device;

The material of the insulating layer is a transparent insulating material; The control device turns on the light source under the button when the charge sample value of each button is less than the proximity sensing threshold and greater than the touch sensing threshold.

Optionally, the control device further includes: an sensing threshold adjusting unit, receiving the charge sample value calculated by the identification analyzing unit, and adjusting the touch sensing threshold and the proximity sensing threshold according to the long-term average value of the charge sample value in the predetermined time; The touch sensing threshold and the proximity sensing threshold are sent to the identification analysis unit.

The present invention also provides a method for controlling a space mouse, comprising: when a touch button structure of a space mouse faces a touch or a proximity touch, the control device records the number of times the voltage corresponding to the total amount of charge transferred from each electrode reaches the reference voltage;

The number of times the voltage corresponding to the total amount of charge transferred on each electrode reaches the reference voltage is used as a charge sample value of the button corresponding to the electrode when the touch button structure faces a touch or proximity touch; and the charge sample value is smaller than the touch sensing threshold. The button is recognized as a touched button;

The control device of the space mouse controls the operation of the space mouse in accordance with the preset function identified as being touched.

Optionally, the method for controlling the space mouse further includes: when the value of the charge sample is less than the proximity sensing threshold and greater than the touch sensing threshold, turning on the light source under the corresponding button.

Optionally, the touch sensing threshold and the proximity sensing threshold are each associated with a long term average of the charge sample values for a predetermined time.

Compared with the prior art, the space mouse disclosed in the above technical solution and the control method thereof have at least the following advantages:

1) The space mouse of the present technical solution has a metal touch panel, and the plurality of keys are separated from each other by grounding the metal touch panel and isolating a plurality of keys on the metal touch panel through an insulating layer. Moreover, since the metal touch panel is grounded, the button is triggered only when the user presses the metal button, and there is no response between the adjacent two keys, and the sensing range is also better, avoiding the adjacent button being touched. Interference when identifying.

And, when a touch action occurs, the amount of charge transfer due to the touch is calculated as a criterion for identifying the touch. Therefore, the touch recognition for the touch action is made more accurate.

Moreover, the touch recognition of the space mouse substantially realizes a zero-pressure touch button structure, which improves the user's experience when using the space mouse. In an optional embodiment, the space mouse may further include a plurality of light sources located under the respective keys. When the control device of the space mouse detects that the charge sample value of each button is less than the proximity sensing threshold and greater than the touch sensing threshold, The control device can control the opening of its light source, so that the user can see the various keys in a dark environment, thereby increasing the user's operating experience and further improving the user's use experience.

In an optional embodiment, the control device of the space mouse may further include an inductive threshold adjusting unit, so that the touch sensing threshold and the proximity sensing threshold can be changed according to changes in the environment, thereby causing the space mouse to be in a complicated environment. The detection of proximity sensing events and touch sensing events can be detected more accurately, further improving the user experience.

DRAWINGS

1 is a schematic structural view of a space mouse of the present invention;

2 is a top plan view of an embodiment of a touch button structure in a space mouse according to the present invention; FIG. 3 is a cross-sectional view of the touch button structure shown in FIG. 2 taken along the A-A direction;

4 is a schematic diagram of an implementation process of applying touch detection by the space mouse of the present invention; FIG. 5 is a schematic diagram of an implementation of touch recognition using the space mouse of the present invention;

Figure 6 is a schematic diagram of the transfer of charge to the unit capacitance in the control device during the touch recognition process of Figure 5.

detailed description

The space mouse and its control method will be described in detail below with reference to the embodiments and the accompanying drawings. Embodiment 1

As shown in FIG. 1, in this embodiment, the space mouse includes a touch button structure and a control device.

Referring to FIG. 2 and FIG. 3 , an embodiment of the touch button structure includes: a metal touch panel 100 having a plurality of metal buttons 1-5 thereon, the metal button and the metal touch panel 100 is isolated by the insulating layer 200, and the metal touch panel 100 is grounded;

a detecting board under the metal touch panel 100, the detecting board has a plurality of electrodes corresponding to the button positions, and the detecting board is insulated from the metal touch panel 100; The area between the button and the corresponding electrode constitutes a plate capacitor.

In the embodiment of the touch button structure described above, each button is isolated from the metal touch panel 100 by an insulating layer, and a plurality of buttons each having a separate key position are formed. By grounding the metal touch panel 100, only When the user presses the metal button, the button will be triggered. There will be no response between the two adjacent metal buttons, and the sensing range is better.

Moreover, when the user's finger touches the metal button, a part of the electric charge escapes through the human body, and the electric charge is transferred through the electrode corresponding to the metal button, thereby realizing the touch recognition of the metal button by detecting the charge transfer. It can be seen that the touch button structure substantially realizes the zero-pressure touch button structure, and the user can detect the touch behavior more accurately without pressing the metal button hard, thereby improving the user's use feeling.

In a specific embodiment, the touch surface of the metal button may be flush with the metal touch panel 100 or higher or lower than the metal touch panel 100.

In a specific embodiment, the metal button and the metal touch panel 100 may be of the same material to save manufacturing costs and optimize the manufacturing process. For example, the metal button and the material of the metal touch panel 100 may each be copper. In the actual manufacturing, the metal touch panel 100 may be formed first, and the metal touch panel 100 is punched according to the size of each button and the key position distribution, and the size of the hole to be punched should be larger than the size of each button. Then, each metal button is formed, and each metal button is aligned and fixed with the metal touch panel 100, and an insulating material is formed in the gap between each metal button and the metal touch panel 100 to form an insulating layer 200 for isolation.

In a specific embodiment, each metal button can be a solid metal disk. The shape of the solid metal disk may be any shape suitable for the structure of the touch button, such as a circle or a square, which is not limited thereto.

In a specific embodiment, each of the metal buttons can also be a metal character, and the metal button can simultaneously implement the touch detection and prompt button functions, and the button characters need not be re-screened on the metal touch panel 100.

In a specific embodiment, the material of the insulating layer 200 may be glass, or various insulating materials known to others. The electrode is a copper foil, or it may be other known conductive materials.

It should be noted that the five buttons on the metal touch panel 100 are merely examples, and the implementation manner thereof is not limited. The number of the buttons and the function of the button can be set according to the actual desired touch function. For example, in other embodiments, the buttons on the metal touch panel 100 can be 8, 20 or More. In addition, in this embodiment, the touch function of a certain button (for example, the button 1) may be preset to start the space mouse, and when the button 1 is touched, the space mouse may be activated; The button 1 is not touched and the space mouse is not activated. In this way, in actual operation, the user can start the space mouse only by touching the button 1. Touching other buttons does not interfere with the start of the space mouse, thereby effectively avoiding the user's misoperation in the actual application. And effectively reduce the energy loss caused by misoperation.

It should be noted that, in this embodiment, the start function button of the space mouse adopts a metal touch button structure, but it should not limit the scope of protection of the present invention. In other embodiments, other button structures, such as air buttons, mechanical buttons, and the like, may be employed. The button structure is connected to the control device. When the control device detects that the button structure with the space mouse start function is triggered (pressed), A control signal for the boot space mouse is also generated to activate the space mouse.

It can be seen from the description of the above-mentioned touch button structure that when the touch button structure is to be operated, the influence of the user's finger on the amount of charge in the charge accumulation region is not directly achieved by touching the charged electrode, but is contacted. Metal button.

The principle that causes the above to occur is that when the electrodes respectively generate a source electric field after charging, the source electric field is an electrostatic field, and a charge accumulation region is formed on the surface of each electrode. When the user's finger touches the metal button, the electric field distribution is changed, causing the transfer of the charge in the charge accumulation region, and the amount of charge in the charge accumulation region is changed.

It can be seen that once a dramatic change in the amount of charge occurs in the charge accumulation region of an electrode, it is generally considered that a touch operation has occurred on the corresponding button of the electrode. Therefore, based on the situation, the charge amount sample value of the corresponding charge accumulation region when the button is facing the touch can be obtained by charging the charge accumulation region, and the case where the charge sample value is smaller than the touch sensing threshold is determined as the touch event. occur.

Correspondingly, the control device of the space mouse is connected to each electrode on the detecting board, detects the charge transfer condition on each electrode to obtain a corresponding charge sample value, identifies the touch operation, and generates an identification according to the recognition result. Controlling a signal to control operation of the space mouse, wherein the detecting comprises:

When the touch button structure faces a touch or a proximity touch, the number of times the voltage corresponding to the total amount of charge transferred from each electrode reaches the reference voltage is recorded; The number of times the voltage corresponding to the total amount of charge transferred on each electrode reaches the reference voltage is used as a charge sample value of a button corresponding to the electrode when the touch button structure faces a touch or a proximity touch;

The control device includes: a plurality of unit capacitors, a plurality of voltage detecting and comparing units, a counting unit, an identification analyzing unit, and an operation control unit, wherein

Accordingly, referring to FIG. 4, an implementation manner of a method for controlling a space mouse according to the present invention includes:

Step si, when the touch button structure of the space mouse faces a touch or a proximity touch, the control device records the number of times the voltage corresponding to the total amount of charge transferred from each electrode reaches the reference voltage;

Step s2, the number of times the voltage corresponding to the total amount of charge transferred on each electrode reaches the reference voltage is used as a charge sample value of the button corresponding to the electrode when the touch button structure faces a touch or a proximity touch;

Step s3, the button whose charge sample value is smaller than the touch sensing threshold is recognized as the touched button; Step s4, the control device of the space mouse controls the operation of the space mouse according to the preset function recognized as the touched button.

Specifically, in this embodiment, the touch function of the button 1 is preset to start the space mouse, and when the charge sample value corresponding to the button 1 is smaller than the touch sensing threshold, the button 1 is recognized as being touched. Pressing, the operation control unit of the control device realizes the operation of the space mouse based on the identification information, that is, the space mouse is started.

Before performing the touch recognition, some initialization process is further performed, including: detecting a background environment signal, and shielding the first frequency (80KHz in this embodiment) to the second frequency (120KHz in the embodiment) The signal generates a trigger signal after detecting the signal in the first frequency to the second frequency range. The trigger signal triggers the touch recognition process.

FIG. 5 is a schematic diagram of an implementation of a method for controlling a space mouse according to the present invention. In the touch button structure of the space mouse, the material of the metal touch panel and the button is copper, and the material of the insulating layer between the button and the metal touch panel is For the glass, the electrode corresponding to the button position on the detection board is copper foil.

When a finger touches or approaches a button on the touch copper film, a portion of the charge escapes through the human body, and charge transfer occurs via the copper foil corresponding to the button position. In order to be informed of the charge transfer, a means of voltage detection can be employed.

Referring to FIG. 6, each copper foil in the touch button structure may be connected to the control device, wherein the control device includes a plurality of unit capacitors, and each copper foil is respectively associated with one unit of the control device. The capacitors are connected. As described above, when a finger touches or approaches a button on the touch copper film, a part of the electric charge escaping from the human body is subjected to charge transfer via the copper foil. Since the unit capacitance and the copper foil are already electrically connected, the charge is transferred to the unit capacitance in the control device, which is equivalent to charging the unit capacitor in the control device. Since the voltage across the capacitor is easily measured, the charge transfer can be obtained by detecting the voltage across the capacitor.

Specifically, a unit capacitor having a small capacitance can be used, and a capacitor of a pF level can be usually used, for example.

0.5pF. Thus, the unit capacitance is more easily filled with the charge transferred from the copper foil. Based on this, by comparing the voltage across the unit capacitor with the voltage across the unit capacitor (reference voltage) by the voltage detection and comparison unit in the control device, it is known whether the unit capacitor is full. Since the charge transferred through the copper foil may be greater than the required charge of the unit capacitor during the touch or proximity of a finger on the touched copper film, a plurality of discharge circuits corresponding to the number of unit capacitors may be disposed in the control device. When the voltage detecting and comparing unit in the control device detects that the voltage across the unit capacitor reaches the reference voltage, the discharging circuit starts discharging the unit capacitor. Since the capacitance of the unit capacitor is small, it is also relatively easy to be quickly discharged by the discharge circuit, and thus the time required for discharge is small. Thereby, the accuracy of the entire touch recognition process can be ensured. After discharging the unit capacitor, the unit capacitor is The charge transferred by the copper foil will be filled and then subjected to re-discharge, which is cycled until the finger touches or approaches the touch of a button on the copper film.

Since the voltage detecting and comparing unit outputs the counting signal when the voltage across the unit capacitor reaches the reference voltage, the voltage detecting and comparing unit outputs a plurality of counting signals when the finger touch or the proximity touch operation ends. Based on this, the count value of the corresponding count signal can be recorded by the counting unit in the control device, and the count value can be used as the charge sample value of the corresponding button when the touch button structure faces a touch or a proximity touch.

After obtaining the charge sample values corresponding to the respective buttons, the analysis may be performed by the recognition analysis unit in the control device, and the button whose charge sample value is smaller than the touch sensing threshold is recognized as the touched button. Thereby, the touch recognition process is completed.

Embodiment 2

In this embodiment, with respect to the foregoing first embodiment, the space mouse further includes: a light source located under a plurality of button keys, wherein the light source is connected to the control device;

The material of the insulating layer is a transparent insulating material;

The control device turns on the light source under the button when the charge sample value corresponding to each button is less than the proximity sensing threshold and greater than the touch sensing threshold.

In this embodiment, a light source is added under the button of the space mouse. When the control device detects that the charge sample value of a button is less than the proximity sensing threshold and is greater than the touch sensing threshold, the actual situation occurs when the user's finger approaches the user. When the space mouse is described, the light source is turned on by the control device at this time, so that the user can see the keys in a dark environment, which enhances the user's operation experience and further improves the user's use experience.

In addition, when the control device recognizes that the touched button is obtained, the light source under the touched button can also be brightened, so that when the user touches a certain button, the light at the key position can be brighter to prompt Pressing the button further enhances the user's operating experience.

The following describes the control method of the space mouse in this embodiment. The control method of this embodiment can implement corresponding control of the light source when the user's finger approaches the touch button structure of the space mouse and touches the button.

For convenience of description, the case where the user's finger is close to the touch button structure is defined as a proximity sensing event trigger, and the corresponding situation when the user's finger touches the button is defined as a touch sensing event trigger; The touch sensing threshold is preset to a first predetermined value, and the proximity sensing threshold is preset to a second predetermined value, and the first predetermined value and the second predetermined value are both fixed values.

Specifically, when a user's finger approaches a certain button of the metal touch panel, a part of the electric charge escapes through the human body. At this time, the control device detects the charge transfer condition generated thereby, and obtains the number of times the unit capacitance corresponding to the button is full, and uses the number of times of being filled as the charge sample value in the process of approaching the user's finger. . Thereby, the control device can make a determination of the proximity sensing event. Generally, in order to make the determination of the proximity sensing event accurate, the control device performs determination based on a plurality of charge sample data to obtain a determination result.

For example, the charge sample values obtained for 8 consecutive times satisfy:

Bell' J , the control device determines that the proximity sensing event is triggered, and performs the above operation of turning on the light source. Where CS is the value of each charge sample, P _th is the proximity sensing threshold, and τ _ώ is the touch sensing threshold.

Of course, since the cause of the change in the charge in the above charge accumulation region is not only the user's finger approaching the touch button structure, there may be other environmental interference effects. In order to obtain a more accurate determination result, more decisions can be combined to finally obtain whether the trigger of the proximity sensing event corresponds to the case where the user's finger is close to the touch button structure. For example, the determination result obtained by satisfying the above-mentioned eight consecutive times of the charge sample value satisfying the formula (1) is used as a preliminary determination result, and if the preliminary determination result of five consecutive times indicates that the proximity sensing event is triggered, the trigger corresponding to the proximity sensing event is determined. The case where the user's finger is close to the touch button structure. At this time, the light source located under the plurality of keys is turned on by the control device to allow the user to see the keys in a dark environment. In order to ensure the accuracy of the subsequent touch recognition of the button on the user's finger, the control device may stop detecting the charge transfer condition, that is, prohibit the corresponding sensing channel of the metal touch panel, so that the potential of the metal panel is re-fixed to the ground potential. , to ensure that the button function is used normally.

When the user's finger continues to approach the metal touch panel until finally touching one or more buttons on the metal panel, the control device can perform corresponding touch recognition, and after identifying the touched button, highlighting the touched button Light source. Similar to the foregoing determination of the proximity sensing event, in order to make the determination of the touch sensing event accurate, the control device also performs determination based on the plurality of charge sample value data to obtain the determination result.

For example, the charge sample values obtained for 8 consecutive times satisfy: CS< Τ _ώ ( 2 ) Bay ' J , the control device determines that the touch sensing event is triggered, and performs an operation of brightening the light source under the touched button. Where CS still represents the value of each charge sample, and τ _ώ still represents the touch sensing threshold.

Further, in order to obtain a more accurate determination result, more decisions can be integrated to finally obtain whether the trigger of the touch sensing event corresponds to the case where the user's finger touches the touch button structure. For example, the determination result obtained by satisfying the above-mentioned eight consecutive times of the charge sample value satisfying the formula (2) is used as a preliminary determination result, and if the preliminary determination result of five consecutive times shows the touch-sensing event trigger, determining the trigger corresponding to the touch-sensing event The case where the user's finger touches the touch button structure.

When the touch is completed and the user's finger gradually moves away from the touch button structure, the charge sample value (CS) also begins to rise slowly. When the charge sample value is satisfied:

CS > ( T _th +LTA) χ 75%,

The control device determines that the touch sensing is terminated, and restores the brightness before the light source under the touched button is illuminated. Where LTA (Long Term Average) indicates the long-term average value of the charge sample value when no condition is triggered. The 75% parameter can also be adjusted to other values, such as 87.5%, depending on the noise impact of the touch button structure.

As the user's finger moves further away from the touch button structure, the charge sample value continues to rise, when the charge sample value satisfies:

CS > ( P _th +LTA) χ 75%,

The control device determines that the proximity sensing is also terminated, and turns off the light source under all the keys, re-states the state of monitoring the charge sample value, and accordingly turns on or brightens the light source according to the above trigger condition.

It should be noted that, in this embodiment, the touch sensing threshold is preset to a first predetermined value, and the proximity sensing threshold is preset to a second predetermined value is merely an example, and is not applicable to limiting the present invention. In other embodiments, the touch sensing threshold and the proximity sensing threshold may be preset to other fixed values according to actual needs.

Embodiment 3

In this embodiment, with respect to the foregoing second embodiment, the control device for the space mouse further includes: an sensing threshold adjusting unit that receives the value of the charge sample calculated by the identification analyzing unit and according to the long-term average value of the value of the charge sample within a predetermined time. Adjust touch-sensing threshold and proximity-sensing threshold; adjust the touch The sensing threshold and the proximity sensing threshold are sent to the identification analysis unit.

The sensing threshold adjusting unit includes: a data collecting unit, collecting a charge sample value within a predetermined time, and calculating a long-term average value of the charge sample value; and outputting the long-term average value of the charge sample value to the sensing threshold calculating unit;

The sensing threshold calculation unit calculates the receiving sensing threshold and the touch sensing threshold according to the received long-term average value of the charge sample value; wherein, when the charge sample value is less than the proximity sensing threshold and greater than the touch sensing threshold, The proximity sensing event triggers, when the charge sample value is less than the touch sensing threshold, the touch sensing event is triggered.

In this embodiment, the sensing threshold adjustment unit is added to the control device of the space mouse, so that the touch sensing threshold and the proximity sensing threshold can be changed according to changes in the environment, thereby enabling the space mouse to be in a complicated environment. The detection of proximity sensing events and touch sensing events is more accurately detected, which improves the user experience.

The control method of the space mouse in this embodiment will be described in detail below. The control method of this embodiment can automatically adjust and compensate the touch sensing threshold and the proximity sensing threshold of the space mouse.

For convenience of description, the case where the user's finger is close to the touch button structure is still defined as the proximity sensing event trigger, and the corresponding situation when the user's finger touches the button is defined as the touch sensing event trigger.

Specifically, the process of the data collection unit includes: collecting data at a predetermined interval time (ie, collecting charge sample values) within a predetermined time period; and accumulating and summing the plurality of charge sample values collected by the plurality of charge samples; A long-term average of the charge sample values is obtained; finally, the long-term average of the charge sample values is sent to the sensing threshold calculation unit.

The sensing threshold calculation unit receives a long-term average value of the charge sample values, and calculates a proximity sensing threshold and a touch sensing threshold according to the long-term average value of the received charge sample values.

The above process will be further described below in conjunction with specific data.

For example, in the present embodiment, the predetermined time is set to Is; the predetermined interval time is preset to 10 ms; then the data collection unit will collect 100 data in Is. When the data acquisition unit is working, the 100 data collected in Is is summed and summed, and the average value is calculated to obtain a long-term average value of the charge sample values, and the long-term average value of the charge sample values is sent to the sensing threshold. Calculation unit.

And the sensing threshold calculation unit calculates the long-term average value of the received charge sample values. The proximity sensing threshold and the touch sensing threshold are derived. For example, in the present embodiment, the proximity sensing threshold is defined as one-eighth of the long-term average of the charge sample values; the touch-sensing threshold is defined as one-sixteenth of the long-term average of the charge sample values. Therefore, when the control device detects that the charge sample value is smaller than the proximity sensing threshold value obtained by the sensing threshold calculating unit and is greater than the touch sensing threshold, the receiving sensing event is triggered; and when the charge sample value is smaller than the sensing threshold calculating unit, A touch-sensitive event is triggered when the touch-sensing threshold is reached. It should be noted that, in an actual application, the predetermined time, the predetermined interval time, and the specific value of the second predetermined time may be adjusted according to actual requirements. In addition, the calculation of the proximity sensing threshold and the touch sensing threshold may also be performed in this embodiment. The other calculation methods are used to determine, which are merely examples in the embodiment, and should not limit the scope of protection of the present invention.

The various aspects and embodiments of the present invention are disclosed above, and other aspects and embodiments of the present invention will be apparent to those skilled in the art. The aspects and embodiments disclosed in the present invention are intended to be illustrative only and not to limit the scope of the invention.

Claims

Rights request

A space mouse, comprising: a touch button structure and a control device,

The touch button structure includes: a metal touch panel, the touch panel has a plurality of metal buttons, the button and the touch panel are separated by an insulating layer, the touch panel is grounded; and the touch panel is detected The detecting board has a plurality of electrodes corresponding to the position of the button, and the detecting board is insulated from the touch panel; the area between the plurality of metal buttons and the corresponding electrodes constitutes a plate capacitor;

2. The space mouse according to claim 1, wherein the control device comprises:

The space mouse according to claim 1 or 2, further comprising: a plurality of buttons a light source below, the light source being connected to the control device;

The material of the insulating layer is a transparent insulating material;

The control device turns on the light source under the button when the charge sample value of each button is less than the proximity sensing threshold and greater than the touch sensing threshold.

4. The space mouse according to claim 3, wherein the control device brightens a light source under the touched button after identifying that the touched button is obtained.

The space mouse according to claim 2, wherein the control device further comprises: a sensing threshold adjusting unit that receives the value of the charge sample calculated by the identification analyzing unit and according to a long-term average value of the value of the charge sample within a predetermined time Adjusting the touch sensing threshold and the proximity sensing threshold; and transmitting the adjusted touch sensing threshold and the proximity sensing threshold to the identification analyzing unit.

The spatial mouse according to claim 5, wherein the sensing threshold adjusting unit comprises: a data collecting unit and an inductive threshold calculating unit,

The data acquisition unit collects the charge sample value for a predetermined time, and calculates a long-term average value of the charge sample value; and outputs the long-term average value of the charge sample value to the sensing threshold calculation unit;

The sensing threshold calculation unit calculates a proximity sensing threshold and a touch sensing threshold according to the received long-term average value of the charge sample value; when the charge sample value is less than the proximity sensing threshold and greater than the touch sensing threshold, the proximity sensing event is triggered The touch sensing event is triggered when the charge sample value is less than the touch sensing threshold.

7. The space mouse according to claim 6, wherein calculating a long-term average value of the charge sample values comprises: accumulating and summing the plurality of charge sample values collected within a predetermined time, and calculating an average thereof Values to derive a long-term average of the charge sample values.

The method for controlling a space mouse according to any one of claims 1 to 7, characterized in that it comprises:

When the touch button structure of the space mouse faces a touch or proximity touch, the control device records the number of times the voltage corresponding to the total amount of charge transferred from each electrode reaches the reference voltage;

Recognizing a button having a charge sample value smaller than a touch sensing threshold as a touched button;

The control device of the space mouse controls the space mouse according to the preset function recognized as the touched button Target operation.

9. The method of controlling a space mouse according to claim 8, further comprising: turning on a light source under the corresponding button when the charge sample value is less than the proximity sensing threshold and greater than the touch sensing threshold.

10. The method of controlling a space mouse according to claim 9, wherein the control device of the space mouse illuminates the light source under the touched button after identifying that the touched button is obtained.

The method of controlling a space mouse according to claim 8 or 9, wherein the touch feeling

The method for controlling a space mouse according to claim 11, wherein the long-term average value of the charge sample values in the predetermined time is cumulatively summed by collecting a plurality of charge sample values collected within a predetermined time And calculate the average value.