WO2022199121A1 - Procédé et appareil de réglage d'un seuil de contact d'une touche - Google Patents

Procédé et appareil de réglage d'un seuil de contact d'une touche Download PDF

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Publication number
WO2022199121A1
WO2022199121A1 PCT/CN2021/135655 CN2021135655W WO2022199121A1 WO 2022199121 A1 WO2022199121 A1 WO 2022199121A1 CN 2021135655 W CN2021135655 W CN 2021135655W WO 2022199121 A1 WO2022199121 A1 WO 2022199121A1
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WIPO (PCT)
Prior art keywords
capacitance
adjusted
value
button
threshold
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PCT/CN2021/135655
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English (en)
Chinese (zh)
Inventor
赖东锋
陈丽媚
焦飔涵
杜骏贤
叶铁英
张亚国
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珠海格力电器股份有限公司
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Publication of WO2022199121A1 publication Critical patent/WO2022199121A1/fr

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/962—Capacitive touch switches

Definitions

  • the present disclosure relates to the field of key control, and in particular, to a method and device for adjusting a touch threshold of a key.
  • the capacitance value of each time a button is touched is recorded and the number of times the button is touched is counted, and when the number of times the button is touched reaches a set number of times, it is determined whether there is abnormal data in the data. If there is abnormal data, delete the abnormal data and re-acquire the capacitance value to make up for the touch capacitance value of the set number of times until there is no abnormal data, and calculate the average value of the capacitance value of the buttons for the set number of times to obtain the touch capacitance value threshold.
  • a method for adjusting the touch threshold of a button which includes: according to the number of valid buttons, the effective time when the button to be adjusted is touched, the lower limit value of the capacitance threshold update, and the average value of noise capacitance, judging whether to record the to-be-adjusted button
  • the capacitance value of the adjustment button is the first capacitance value; and when the recorded number of the first capacitance values of the to-be-adjusted keys is greater than the first threshold value, the adjustment is made according to the average value of the recorded first capacitance values of the to-be-adjusted keys. Adjusts the touch threshold for keys.
  • judging whether to record the capacitance value of the key to be adjusted as the first capacitance value includes: when the key to be adjusted is an effective key, and the effective time of being touched is less than the effective duration, the number of effective keys in the same time period is less than or equal to In the case of the second numerical threshold, record the capacitance value of the button to be adjusted as the first capacitance value; if the button to be adjusted is an invalid button, but the capacitance value of the button to be adjusted is greater than the lower limit value of the capacitance threshold update, record the value to be adjusted
  • the capacitance value of the adjustment button is the first capacitance value; and in the case that the to-be-adjusted button is an invalid button and the capacitance value of the to-be-adjusted button is less than or equal to the capacitance threshold update lower limit value, if it is detected that the capacitance value of the to-be-adjusted button is greater than the noise
  • the capacitance value of the button to be adjusted is smaller than the noise capacitance threshold and smaller than the second multiple of the average value of the noise capacitance
  • the capacitance value of the button to be adjusted is recorded as the second capacitance value, wherein the second multiple is smaller than the second capacitance value.
  • the noise capacitance threshold is less than the updated lower limit value of the capacitance threshold; and the average value of the second capacitance values of the keys to be adjusted recorded multiple times is calculated to obtain the average value of the noise capacitance.
  • the capacitance value of the key to be adjusted is greater than the effective capacitance threshold, it is determined that the key to be adjusted is an effective key.
  • adjusting the touch threshold of the button to be adjusted according to the recorded average value of the first capacitance value of the button to be adjusted includes: removing the average value of the first capacitance value of the button to be adjusted, the first capacitance value of the average value of the noise capacitance The capacitance value obtained after doubling is used as the touch threshold of the button to be adjusted.
  • adjusting the touch threshold of the key to be adjusted according to the recorded average value of the first capacitance value of the key to be adjusted includes: multiplying the average value of the first capacitance value of the key to be adjusted by a noise impact factor coefficient The obtained capacitance value is used as the touch threshold of the button to be adjusted, wherein the noise influence factor coefficient is less than 1.
  • an apparatus for adjusting a touch threshold of a key including: a capacitance value recording unit configured to update the lower limit according to the number of valid keys, the effective time when the key to be adjusted is touched, and the capacitance threshold value and the average value of noise capacitance, to determine whether to record the capacitance value of the button to be adjusted as the first capacitance value; and the touch threshold adjustment unit, configured to record the number of the first capacitance value of the button to be adjusted is greater than the first threshold value , adjust the touch threshold of the key to be adjusted according to the recorded average value of the first capacitance value of the key to be adjusted.
  • the capacitance value recording unit is configured to, when the key to be adjusted is a valid key, and the touch valid time is less than the valid duration, and the number of valid keys in the same time is less than or equal to the second threshold value, Record the capacitance value of the button to be adjusted as the first capacitance value; when the button to be adjusted is an invalid button, but the capacitance value of the button to be adjusted is greater than the lower limit value of the capacitance threshold update, record the capacitance value of the button to be adjusted as the first capacitance and when the key to be adjusted is an invalid key, and the capacitance value of the key to be adjusted is less than or equal to the lower limit value of the capacitance threshold update, if it is detected that the capacitance value of the key to be adjusted is greater than the first multiple of the average value of the noise capacitance When the number of times is greater than the threshold, the capacitance value of the key to be adjusted is recorded as the first capacitance value.
  • the noise capacitance average value adjustment unit is configured to perform an average value calculation on the second capacitance values of the keys to be adjusted recorded multiple times to obtain an average value of the noise capacitance, wherein the capacitance value recording unit is further configured as When the capacitance value of the button to be adjusted is smaller than the noise capacitance threshold and smaller than the second multiple of the average value of the noise capacitance, record the capacitance value of the button to be adjusted as the second capacitance value, wherein the second multiple is smaller than the first multiple, and the noise capacitance threshold Less than the capacitance threshold update lower limit value.
  • an apparatus for adjusting a touch threshold of a key comprising: a memory; and a processor coupled to the memory, the processor being configured to perform the above adjustment of the key based on instructions stored in the memory The method of touching the threshold.
  • a non-transitory computer-readable storage medium storing computer program instructions thereon, and when the instructions are executed by a processor, the above-mentioned method for adjusting a touch threshold of a key is implemented.
  • FIG. 1 is a schematic flowchart of some embodiments of the disclosed method for adjusting the touch threshold of a key.
  • FIG. 2 is a schematic flowchart of other embodiments of a method for adjusting a touch threshold of a key according to the present disclosure.
  • FIG. 3 is a schematic structural diagram of some embodiments of an apparatus for adjusting a touch threshold of a key according to the present disclosure.
  • FIG. 4 is a schematic structural diagram of another embodiment of the apparatus for adjusting the touch threshold of a key according to the present disclosure.
  • FIG. 5 is a schematic structural diagram of another embodiment of the apparatus for adjusting the touch threshold of a key according to the present disclosure.
  • the user when the user presses the button for a long time, the user will generally press harder and harder, causing the capacitance value of the button to increase. If the capacitance value of the button at this time is recorded, the final calculated touch threshold will be biased. high, which in turn leads to lower sensitivity of the set keys. If the capacitance values of multiple buttons change at the same time, it means that the button operation is not normal. For example, when the user is wiping the button panel, if the capacitance value of the button is recorded at this time, the calculated threshold value is not the threshold value obtained when the user presses the button normally, so that the sensitivity of the adjusted button is not appropriate.
  • the difference between the capacitance value of the button and the average value is normal data only when the difference value is within the preset difference value range, otherwise it is not recorded.
  • the "preset difference” is fixed and cannot be adjusted automatically, and in order to prevent malfunctions, the “preset difference” is generally not set to a small value. If there is an extreme situation, for example, the touch key board and the panel are not firmly pasted, and the gap is large, the capacitance value will change less when the key is pressed, and the "preset difference” will not be reached, and it will not Adjusting the threshold value will eventually lead to the complete failure of the button.
  • FIG. 1 is a schematic flowchart of some embodiments of the disclosed method for adjusting the touch threshold of a key.
  • step 110 it is determined whether to record the capacitance value of the to-be-adjusted key as the first capacitance value according to the number of valid keys, the touch valid time of the key to be adjusted, the updated lower limit value of the capacitance threshold and the average value of the noise capacitance.
  • the capacitance value is recorded as the first capacitance value.
  • the first capacitance value is a parameter for subsequently calculating the touch threshold of the key.
  • the key to be adjusted is a touch key.
  • the capacitance value of the key to be adjusted is recorded. is the first capacitance value.
  • the capacitance value of the button will change.
  • the capacitance value C of each button is detected every predetermined time, and when the capacitance value C of the button is greater than the effective capacitance threshold Cy, the button is determined to be a valid button, that is, the button is effectively touched.
  • the capacitance value C of each button is detected every predetermined time, and when the capacitance value C of the button is greater than the effective capacitance threshold Cy, the button is determined to be a valid button, that is, the button is effectively touched.
  • the capacitance value at this time is not used as a parameter for the subsequent calculation of the touch threshold of the key. .
  • the effective time of the button being touched is greater than the effective duration, for example, more than 1 second, it means that the user presses the button for a long time, and the capacitance value of the button will increase. Therefore, the capacitance value at this time is not used as the subsequent calculation button Touch the Threshold parameter.
  • the capacitance value of the key to be adjusted is recorded as the first capacitance value.
  • the capacitance value of the button is too small, it may be caused by a small change in the capacitance value of the button caused by noise or abnormal operation in a short time. Therefore, the capacitance value C of the button to be adjusted needs to be greater than the capacitance threshold update lower limit value Cj.
  • the capacitance value is used as a parameter for subsequent calculation of the touch threshold of the key.
  • the capacitance value of the key to be adjusted is less than or equal to the lower limit value of the capacitance threshold update, if it is detected that the capacitance value of the key to be adjusted is greater than the first value of the average value of the noise capacitance When the times of the multiple is greater than the times threshold, the capacitance value of the key to be adjusted is recorded as the first capacitance value.
  • the capacitance value of the button is relatively small, for example, it is smaller than the capacitance threshold update lower limit value Cj, if the capacitance value is detected multiple times greater than 1+K times the average value of the noise capacitance Cn, it may be because there is a gap between the button board and the panel.
  • the capacitance value of the button becomes smaller due to reasons such as the gap. In this case, the capacitance value is used as a parameter for subsequent calculation of the touch threshold of the button.
  • step 120 when the recorded number of the first capacitance values of the keys to be adjusted is greater than the first numerical threshold, the touch threshold of the keys to be adjusted is adjusted according to the average value of the recorded first capacitance values of the keys to be adjusted.
  • the touch threshold of the keys to be adjusted is calculated.
  • the average value of the first capacitance value of the button to be adjusted and the capacitance value obtained by removing the second multiple of the average value of the noise capacitance is used as the touch threshold of the button to be adjusted, and the second multiple is smaller than the first multiple.
  • the touch threshold is smaller than the average capacitance value of the keys. Since the detected capacitance value accumulates the noise value, the touch threshold is determined after subtracting the noise value.
  • the capacitance value obtained by multiplying the average value of the first capacitance value of the button to be adjusted by the noise influence factor coefficient is used as the touch threshold of the button to be adjusted, wherein the noise influence factor coefficient is less than 1.
  • the noise influence factor coefficient is set to, for example, 0.5-0.8, which can reduce the influence of noise on the touch threshold.
  • the accuracy of the calculation of the touch threshold is improved, so as to ensure that the sensitivity of the touch key is always maintained at an appropriate level, and the capacitance value of the touch key can be adjusted even when the capacitance value of the touch key is small. Adjust the touch threshold so that the keys operate normally.
  • the capacitance value of the button to be adjusted when the capacitance value of the button to be adjusted is smaller than the noise capacitance threshold and smaller than the second multiple of the average value of the noise capacitance, the capacitance value of the button to be adjusted is recorded as the second capacitance value, wherein the first capacitance value is The second multiple is less than the first multiple, and the noise capacitance threshold is less than the updated lower limit value of the capacitance threshold; the average value of the second capacitance values of the keys to be adjusted recorded multiple times is calculated to obtain the average value of the noise capacitance.
  • the capacitance value C of the button When there is no object close to the button, the capacitance value C of the button will also change due to fluctuations in the power supply, device parameters, environment or other reasons. This capacitance value is called the noise capacitance value, and the capacitance value C may be negative value.
  • the capacitance value C of the button to be adjusted when the capacitance value C of the button to be adjusted is greater than 0, smaller than the noise capacitance threshold Ci, and smaller than K times the average noise capacitance value Cn, the capacitance value is recorded as a parameter for subsequent calculation of the average noise capacitance value .
  • the value of K is, for example, 1.5 to 2, that is, when the capacitance value C of the button is less than 1.5 to 2 times the average value of the noise capacitance, the capacitance value C can be used in the calculation of the noise capacitance value.
  • the maximum value of m is 100. When the recorded second capacitance value exceeds 100, the second capacitance value recorded earlier is eliminated to update the average value of the calculated noise capacitance.
  • the maximum value of m is set according to the actual situation.
  • the average value of the noise capacitance can be dynamically adjusted, and then when the capacitance value of the button is small, it is judged whether to record the capacitance value of the button according to the capacitance value of the button and the average value of the noise capacitance, so that the capacitance value of the button is When it is small, the threshold can be adjusted so that the button can respond normally while avoiding the malfunction of the button caused by noise.
  • FIG. 2 is a schematic flowchart of other embodiments of a method for adjusting a touch threshold of a key according to the present disclosure.
  • step 210 the number N of valid keys and the valid time T when each key is touched are recorded.
  • each button has a corresponding effective capacitance threshold Cy, and the capacitance value C of each button is periodically detected.
  • the capacitance value C of each button is detected every 10ms, and when the capacitance value of the button reaches the effective capacitance threshold Cy, the button is recorded as an effective button.
  • step 220 it is judged whether the key to be adjusted is a valid key, if yes, go to step 230, otherwise, go to step 270.
  • step 230 it is determined whether the number N of valid keys in the same time period is greater than 0 and less than or equal to 2, if yes, execute step 240, otherwise, execute step 260.
  • the number threshold is set to 2. For linked buttons or combination buttons, sometimes two buttons are touched at the same time. Those skilled in the art should understand that if there is no combination button, the number threshold should be set to 1; if there is a combination button, but the number of combination buttons is 3, the number threshold is set to 3.
  • step 240 it is judged whether the effective time T of the key to be adjusted being touched is less than or equal to 1S, and if so, step 250 is performed; otherwise, step 260 is performed.
  • the capacitance value is recorded as the first capacitance value.
  • the capacitance value is not recorded.
  • the capacitance value of the button When the user presses the button for a long time, it will generally be pressed harder and harder, which will cause the capacitance value of the button to increase. Low; in addition, if the capacitance values of multiple buttons change at the same time, it means that the button operation is not normal. It is possible that the user is wiping the button panel. If the capacitance value of the button is recorded at this time, the calculated threshold value is not normal for the user. The threshold value obtained when the key is pressed, so that the sensitivity of the adjusted key is not the appropriate sensitivity. Therefore, when the number of valid keys is greater than 2, or when the valid time T of the keys being touched is greater than 1 second, the capacitance value is not recorded.
  • step 270 it is judged whether the capacitance value C of the button to be adjusted is greater than the capacitance threshold update lower limit value Cj, if so, step 250 is performed; otherwise, step 280 is performed.
  • the capacitance value that is too small may be a small change in the capacitance value of the button caused by noise or abnormal operation in a short time, and cannot be regarded as a normal capacitance value. Therefore, when there is no valid button, only when the capacitance value of the button to be adjusted is greater than a certain value Only record the capacitance value of Cj, so that the capacitance value participates in the calculation of the touch threshold.
  • step 280 it is judged whether the capacitance value C of the button to be adjusted is greater than 1+K times of the average value of the noise capacitance Cn after k times of checking, if so, step 250 is performed; otherwise, step 260 is performed.
  • the capacitance value of the button When the capacitance value of the button is relatively small, it is also possible that the capacitance value of the button decreases due to the gap between the button board and the panel. In this case, when it is detected that the capacitance value is greater than 1+K times the average value of the noise capacitance Cn for many times, it is considered to be a normal user key operation, so the capacitance value will also be recorded to update the threshold value, so that in this case Responds to user keystrokes.
  • step 290 it is judged whether the number of recorded first capacitance values reaches a predetermined number, if so, step 2100 is performed; otherwise, step 210 is continued.
  • the touch threshold of the key is calculated.
  • the record of the capacitance value when the duration of the key presses of multiple valid keys exceeds 1 second can be eliminated, so as to avoid that the new threshold value calculated from the recorded capacitance value in these cases is not an appropriate threshold value;
  • the threshold can be automatically adjusted to make the button respond normally while avoiding the button malfunction caused by noise, so that the sensitivity of the touch button is always maintained at an appropriate level.
  • FIG. 3 is a schematic structural diagram of some embodiments of an apparatus for adjusting a touch threshold of a key according to the present disclosure.
  • the device includes a capacitance value recording unit 310 and a touch threshold value adjusting unit 320.
  • the capacitance value recording unit 310 is configured to determine whether to record the capacitance value of the to-be-adjusted key as the first capacitance value according to the number of valid keys, the touch valid time of the key to be adjusted, the capacitance threshold update lower limit value and the average value of noise capacitance.
  • the capacitance value recording unit 310 is configured to be a valid key when the key to be adjusted is a valid key, and the valid time of being touched is less than the valid duration, and the number of valid keys in the same time is less than or equal to the second threshold.
  • the capacitance value of the key to be adjusted is greater than the effective capacitance threshold, it is determined that the key to be adjusted is an effective key.
  • the touch threshold adjustment unit 320 is configured to adjust the touch of the keys to be adjusted according to the average value of the recorded first capacitance values of the keys to be adjusted when the number of recorded first capacitance values of the keys to be adjusted is greater than the first threshold value. threshold.
  • the touch threshold adjustment unit 320 is configured to use the average value of the first capacitance value of the button to be adjusted and the capacitance value obtained by removing the second multiple of the average value of the noise capacitance as the touch threshold value of the button to be adjusted.
  • the touch threshold adjustment unit 320 is configured to take the average value of the first capacitance value of the key to be adjusted and the capacitance value obtained by multiplying the noise influence factor coefficient as the touch threshold of the key to be adjusted, wherein the noise The impact factor coefficient is less than 1.
  • FIG. 4 is a schematic structural diagram of another embodiment of the apparatus for adjusting the touch threshold of a key according to the present disclosure.
  • the apparatus further includes a noise capacitance average adjustment unit 410 .
  • the capacitance value recording unit 310 is further configured to record the capacitance value of the button to be adjusted when the capacitance value of the button to be adjusted is smaller than the noise capacitance threshold and smaller than the second multiple of the average value of the noise capacitance, wherein the second capacitance value is The multiple is less than the first multiple, and the noise capacitance threshold is less than the update lower limit of the capacitance threshold.
  • the noise capacitance average value adjustment unit 410 is configured to perform an average value calculation on the second capacitance values of the keys to be adjusted recorded multiple times to obtain an average value of the noise capacitance.
  • the average value of the noise capacitance can be dynamically adjusted, and then when the capacitance value of the button is small, it is judged whether to record the capacitance value of the button according to the capacitance value of the button and the average value of the noise capacitance, so that the capacitance value of the button is When the value is small, the threshold can be adjusted to make the button respond normally while avoiding the malfunction of the button caused by noise.
  • FIG. 5 is a schematic structural diagram of another embodiment of the apparatus for adjusting the touch threshold of a key according to the present disclosure.
  • the apparatus 500 includes a memory 510 and a processor 520 .
  • the memory 510 may be a magnetic disk, a flash memory or any other non-volatile storage medium.
  • the memory 510 is used to store the instructions in the embodiments corresponding to FIGS. 1 and 2 .
  • the processor 520 is coupled to the memory 510 and may be implemented as one or more integrated circuits, such as a microprocessor or microcontroller.
  • the processor 520 is used to execute instructions stored in the memory.
  • processor 520 is coupled to memory 510 through BUS bus 530 .
  • the device 500 can also be connected to an external storage device 550 through a storage interface 540 to call external data, and can also be connected to a network or another computer system (not shown) through a network interface 560, which will not be described in detail here.
  • the data instructions are stored in the memory and the above instructions are processed by the processor, which can solve the problem that the existing touch threshold adjustment is unreasonable or incomplete, resulting in insensitive or malfunctioning keys.
  • a computer-readable storage medium is provided with computer program instructions stored thereon, and the instructions, when executed by a processor, implement the steps of the methods in the embodiments corresponding to FIGS. 1 and 2 .
  • embodiments of the present disclosure may be provided as a method, apparatus, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein .
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

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Abstract

Procédé et appareil de réglage d'un seuil de contact d'une touche, se rapportant au domaine de la commande de touches. Le procédé comprend : en fonction du nombre de touches effectives, un temps de contact effectif de touches à régler, une valeur limite inférieure de mise à jour de seuil de capacité, et une valeur moyenne de capacités de bruit, déterminant s'il faut enregistrer des valeurs de capacité des touches à régler en tant que premières valeurs de capacité ; et lorsque le nombre de premières valeurs de capacité enregistrées des touches à régler est supérieur à un premier seuil de nombre, le réglage, en fonction d'une valeur moyenne des premières valeurs de capacité enregistrées des touches à régler, d'un seuil de contact des touches à régler.
PCT/CN2021/135655 2021-03-22 2021-12-06 Procédé et appareil de réglage d'un seuil de contact d'une touche WO2022199121A1 (fr)

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