CN107291310A - Self-adaptive adjustment method, device and system for sensitivity of touch screen - Google Patents
Self-adaptive adjustment method, device and system for sensitivity of touch screen Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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Abstract
The invention discloses a method, a device and a system for self-adaptive adjustment of sensitivity of a touch screen. Wherein, the method comprises the following steps: judging the electromagnetic interference intensity of the touch screen; adjusting parameters of a firmware program according to the electromagnetic environment interference intensity, and sending the adjusted parameters to a touch IC (integrated circuit) to realize the adjustment of the sensitivity of the touch screen; wherein the firmware program is located on the touch IC. According to the invention, the problem that the capacitive touch screen is greatly influenced by an electromagnetic environment in the prior art is solved, the sensitivity of the touch screen can be adaptively adjusted according to the working condition electromagnetic environment, the adaptive environment is wider, the mass production is facilitated, the efficiency is improved, the user experience is improved, and the complaint risk is reduced.
Description
Technical Field
The invention relates to the technical field of touch control, in particular to a method, a device and a system for adaptively adjusting the sensitivity of a touch screen.
Background
With the continuous breakthrough of the technology, the capacitive touch screen gradually enters the industrial control application field. The capacitive touch screen is influenced by the principle of the capacitive touch screen while improving the operation experience of a user, has related problems, is particularly sensitive to an electromagnetic environment, slightly influences the touch response speed, and seriously directly influences the effectiveness of touch operation. Fig. 1 is a schematic structural diagram of a touch screen in the prior art, and as shown in fig. 1, the touch screen includes a main control CPU, a touch IC, and the like, the main control CPU communicates with the touch IC through an IIC bus, a firmware program on the touch IC is self-contained by a manufacturer, and the main control CPU cannot adjust and update the firmware program, and then cannot automatically adjust the sensitivity of the touch screen according to actual conditions.
The industrial control equipment has complex and various installation environments and relatively severe electromagnetic environment, and the capacitive touch screens produced in batches cannot be well adapted to various electromagnetic environments. The following disadvantages mainly exist:
1) when problems occur, the field needs to be rectified and debugged one by one, which wastes labor cost;
2) individual differentiation can cause limitations for mass production;
3) is easy to be complained by customers and affects the brand image.
Aiming at the problem that a capacitive touch screen in the prior art is greatly influenced by an electromagnetic environment, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a method, a device and a system for adaptively adjusting the sensitivity of a touch screen, and aims to solve the problem that a capacitive touch screen in the prior art is greatly influenced by an electromagnetic environment.
In order to solve the technical problem, the invention provides a method for adaptively adjusting the sensitivity of a touch screen, wherein the method comprises the following steps: judging the electromagnetic interference intensity of the touch screen; adjusting parameters of a firmware program according to the electromagnetic environment interference intensity, and sending the adjusted parameters to a touch IC (integrated circuit) to realize the adjustment of the sensitivity of the touch screen; wherein the firmware program is located on the touch IC.
Further, before determining the electromagnetic interference intensity of the touch screen, the method further includes: the main control CPU burns the firmware program onto the touch IC.
Further, the main control CPU burns the firmware program onto the touch IC, including: the main control CPU integrates a firmware program; and the main control CPU burns the firmware program onto the touch IC through a communication line.
Further, the judging the electromagnetic interference strength of the touch screen comprises the following steps: the main control CPU collects ripple wave fluctuation conditions of the power supply through an A/D sampling circuit; and the main control CPU judges the electromagnetic interference intensity of the touch screen according to the ripple wave fluctuation condition.
Further, the ripple fluctuation condition includes: ripple wave amplitude; judging the electromagnetic interference intensity of the touch screen according to the ripple fluctuation condition, comprising the following steps: if the ripple wave fluctuation amplitude is larger than or equal to the first amplitude, determining that the electromagnetic environment interference intensity is high; if the second amplitude is smaller than the ripple fluctuation amplitude and smaller than the first amplitude, determining that the electromagnetic environment interference intensity is medium; and if the ripple fluctuation amplitude is less than or equal to the second amplitude, determining that the electromagnetic environment interference intensity is low.
Further, the parameters of the firmware program include at least one of: report scanning frequency and filtering strength.
Further, adjusting the parameters of the firmware program according to the electromagnetic environment interference intensity includes: if the electromagnetic environment interference intensity is high, the master control CPU adjusts the report point scanning frequency to be low frequency and adjusts the filtering intensity to be high intensity; if the electromagnetic environment interference intensity is medium, the master control CPU adjusts the report scanning frequency to be medium frequency, and adjusts the filtering intensity to be medium intensity; if the electromagnetic environment interference intensity is low, the main control CPU adjusts the report scanning frequency to high frequency and adjusts the filtering intensity to low intensity.
Further, the parameters after adjustment are sent to the touch IC to realize the adjustment of the sensitivity of the touch screen, including: the master control CPU sends the adjusted parameters to the touch IC; and the touch IC updates the firmware program according to the parameters and performs sampling adjustment according to the updated firmware program so as to realize adjustment of the sensitivity of the touch screen.
The invention also provides a self-adaptive adjusting device of the sensitivity of the touch screen, which is applied to a main control CPU, wherein the device comprises: the judging module is used for judging the electromagnetic interference intensity of the touch screen; the adjusting module is used for adjusting parameters of a firmware program according to the electromagnetic environment interference intensity and sending the adjusted parameters to the touch IC so as to realize the adjustment of the sensitivity of the touch screen; wherein the firmware program is located on the touch IC.
Further, the apparatus further comprises: and the burning module is used for burning the firmware program onto the touch IC.
Further, the judging module comprises: the acquisition unit is used for acquiring the ripple wave fluctuation condition of the power supply through the A/D sampling circuit; and the judging unit is used for judging the electromagnetic interference intensity of the touch screen according to the ripple wave fluctuation condition.
Further, the ripple fluctuation condition includes: ripple wave amplitude; the judging unit includes: the first determining subunit is used for determining that the electromagnetic environment interference intensity is high under the condition that the ripple fluctuation amplitude is larger than or equal to a first amplitude; the second determining subunit is used for determining the electromagnetic environment interference strength to be medium under the condition that the second amplitude value is smaller than the ripple fluctuation amplitude value and smaller than the first amplitude value; and the third determining subunit is used for determining that the electromagnetic environment interference intensity is low under the condition that the ripple fluctuation amplitude is less than or equal to the second amplitude.
Further, the parameters of the firmware program include at least one of: report scanning frequency and filtering strength.
Further, the adjustment module includes: a first adjusting unit, configured to adjust the report scanning frequency to a low frequency and adjust the filtering strength to a high strength when the electromagnetic environment interference strength is high; a second adjusting unit, configured to adjust the report scanning frequency to an intermediate frequency and adjust the filtering strength to an intermediate strength when the electromagnetic environment interference strength is medium; and the third adjusting unit is used for adjusting the scanning frequency of the report point to high frequency and adjusting the filtering intensity to low intensity under the condition that the interference intensity of the electromagnetic environment is low.
The invention also provides a self-adaptive adjusting system of the sensitivity of the touch screen, wherein the system comprises: a master control CPU and a touch IC; the main control CPU is used for sending a firmware program to the touch IC, judging the electromagnetic interference intensity of the touch screen, adjusting the parameters of the firmware program according to the electromagnetic environment interference intensity, and sending the adjusted parameters to the touch IC; the touch IC is used for storing the firmware program sent by the main control CPU and receiving the parameters of the firmware program sent by the main control CPU; and the touch screen is also used for updating the firmware program according to the parameters and carrying out sampling adjustment according to the updated firmware program so as to realize adjustment of the sensitivity of the touch screen.
Further, the system further comprises: the analog-digital A/D sampling circuit is used for acquiring the ripple wave condition of the power supply; and the main control CPU is used for judging the electromagnetic interference intensity of the touch screen according to the ripple wave fluctuation condition.
By applying the technical scheme of the invention, the sensitivity of the touch screen can be adaptively adjusted according to the working condition electromagnetic environment, the adaptive environment is wider, the mass production is facilitated, the efficiency is improved, the user experience is improved, and the complaint risk is reduced.
Drawings
FIG. 1 is a schematic diagram of a prior art touch screen configuration;
FIG. 2 is a flow chart of a method of adaptive adjustment of touch screen sensitivity according to an embodiment of the present invention;
FIG. 3 is a block diagram of an adaptive adjusting apparatus for touch screen sensitivity according to an embodiment of the present invention;
fig. 4 is a block diagram of a structure of an adaptive adjustment system for touch screen sensitivity according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and the examples, but without limiting the invention.
With the development of science and technology and the innovation of technology, the capacitive touch screen is bound to replace a resistive touch screen and be applied to various industries. Resistive touch screens are far less advantageous than capacitive touch screens in terms of operating experience and lifetime. However, the capacitive touch screen is sensitive to electromagnetic environment, which is a weak point of the capacitive touch screen. The embodiment of the invention provides a self-adaptive adjustment scheme for the sensitivity of a touch screen, which can effectively improve the disadvantage and improve the operation experience of a user.
Example one
Fig. 2 is a flowchart of an adaptive adjustment method of touch screen sensitivity according to an embodiment of the present invention, as shown in fig. 2, the method includes the following steps (step S201-step S202):
step S201, a main control CPU judges the electromagnetic interference intensity of a touch screen;
step S202, a main control CPU adjusts parameters of a firmware program according to the electromagnetic environment interference intensity, and sends the adjusted parameters to a touch IC (integrated circuit) to realize the adjustment of the sensitivity of the touch screen; the firmware program is located on the touch IC.
Through this embodiment, can carry out self-adaptation regulation according to operating mode electromagnetic environment to the sensitivity of touch-sensitive screen, the adaptation environment is wider, is favorable to batch production, promotes efficiency, promotes user experience, reduces the risk of complaining.
In this embodiment, before the main control CPU (Central Processing Unit) determines the electromagnetic interference intensity of the touch screen, a firmware program is first burned onto a touch IC (integrated circuit), which may be implemented by the following preferred embodiments: firstly, a touch IC firmware program is integrated into the main control CPU, and after the touch screen is powered on and started, the main control CPU can access a communication line, for example: an Inter-Integrated Circuit (IIC) bus connected to the touch pad records the firmware program onto the touch IC. And providing a basis for the subsequent updating of the optimized firmware program.
In this embodiment, preferably, the main control CPU acquires a ripple fluctuation condition (at least including a ripple fluctuation amplitude) of the power supply through an a/D (analog-to-digital) sampling circuit, and determines an electromagnetic interference intensity of the touch screen according to the ripple fluctuation condition, so as to adjust parameters (such as a report scanning frequency, a filtering intensity, and the like) of the firmware program, so that the touch IC is in a relatively optimal touch coordinate acquisition mode.
If the ripple wave fluctuation amplitude is larger than or equal to the first amplitude, determining that the electromagnetic environment interference intensity is high; if the second amplitude is smaller than the ripple fluctuation amplitude and smaller than the first amplitude, determining that the electromagnetic environment interference intensity is medium; and if the ripple fluctuation amplitude is less than or equal to the second amplitude, determining that the electromagnetic environment interference intensity is low. Specifically, in order to clearly divide the three levels of the electromagnetic environment interference intensity, three corresponding intervals may be set, for example, a first intensity and a second intensity are set, and the electromagnetic environment interference intensity is higher than the first intensity; the second intensity is less than or equal to the electromagnetic environment interference intensity and less than or equal to the first intensity, and the second intensity is medium; the electromagnetic environment interference intensity is lower than the second intensity.
In this embodiment, the parameters of the firmware program may include at least one of the following: report scanning frequency and filtering strength. The main control CPU adjusts the parameters of the firmware program according to the interference intensity of the electromagnetic environment, and can be realized by the following preferred embodiments: if the electromagnetic environment interference intensity is high, the master control CPU adjusts the report point scanning frequency to be low frequency and adjusts the filtering intensity to be high intensity; if the electromagnetic environment interference intensity is medium, the master control CPU adjusts the report point scanning frequency to be medium frequency, and adjusts the filtering intensity to be medium intensity; if the electromagnetic environment interference intensity is low, the master control CPU adjusts the report point scanning frequency to high frequency and adjusts the filtering intensity to low intensity.
Specifically, in order to clearly divide the high frequency, the intermediate frequency, and the low frequency of the report scanning frequency into three levels, corresponding three intervals may be set, for example, a first frequency and a second frequency are set, and the report scanning frequency > the first frequency is high; the second frequency is less than or equal to the report point scanning frequency is less than or equal to the first frequency, and the report point scanning frequency is middle; if the report scanning frequency is less than the second frequency, it is low. Similarly, three sections may be provided for high, medium, and low filter intensities.
After adjusting the parameters of the firmware program, the main control CPU sends the adjusted parameters to the touch IC; and the touch IC updates the firmware program according to the parameters, so that the touch IC is in a relatively optimal touch coordinate acquisition mode, and sampling adjustment is performed in the mode to realize adjustment of the sensitivity of the touch screen.
Example two
Corresponding to the adaptive adjustment method for touch screen sensitivity introduced in fig. 2, this embodiment provides an adaptive adjustment device for touch screen sensitivity, which is applied to a main control CPU, and as shown in a block diagram of a structure of the adaptive adjustment device for touch screen sensitivity shown in fig. 3, the device includes:
the judging module 10 is used for judging the electromagnetic interference intensity of the touch screen;
the adjusting module 20 is connected to the judging module 10, and is configured to adjust a parameter of the firmware program according to the electromagnetic environment interference intensity, and send the adjusted parameter to the touch IC, so as to adjust the sensitivity of the touch screen; the firmware program is located on the touch IC.
Through this embodiment, can carry out self-adaptation regulation according to operating mode electromagnetic environment to the sensitivity of touch-sensitive screen, the adaptation environment is wider, is favorable to batch production, promotes efficiency, promotes user experience, reduces the risk of complaining.
In this embodiment, the apparatus may further include: and the burning module is used for burning the firmware program onto the touch IC. Specifically, the sending module may integrate the firmware program, and then burn the firmware program onto the touch IC through the IIC bus connected to the touch pad. And providing a basis for the subsequent updating of the optimized firmware program.
Preferably, the judging module 20 may include: the acquisition unit is used for acquiring the ripple fluctuation condition (at least comprising ripple fluctuation amplitude) of the power supply through the A/D sampling circuit; and the judging unit is used for judging the electromagnetic interference intensity of the touch screen according to the ripple fluctuation condition.
Specifically, the judging unit may include: the first determining subunit is used for determining that the electromagnetic environment interference intensity is high under the condition that the ripple fluctuation amplitude is larger than or equal to the first amplitude; the second determining subunit is used for determining the electromagnetic environment interference strength to be medium under the condition that the second amplitude value is smaller than the ripple fluctuation amplitude value and smaller than the first amplitude value; and the third determining subunit is used for determining that the electromagnetic environment interference intensity is low under the condition that the ripple fluctuation amplitude is less than or equal to the second amplitude.
In this embodiment, the parameters of the firmware program may include at least one of the following: report scanning frequency and filtering strength. The adjusting module 30 may include: the first adjusting unit is used for adjusting the scanning frequency of the report point to be low frequency and adjusting the filtering intensity to be high intensity under the condition that the interference intensity of the electromagnetic environment is high; the second adjusting unit is used for adjusting the scanning frequency of the report point to an intermediate frequency and adjusting the filtering intensity to an intermediate intensity under the condition that the interference intensity of the electromagnetic environment is intermediate; and a third adjusting unit, configured to adjust the scanning frequency of the report point to a high frequency and adjust the filtering strength to a low strength when the electromagnetic environment interference strength is low. Based on the method, the parameters of the firmware program can be adjusted and optimized, and a basis is provided for the subsequent adjustment of the sensitivity of the touch screen.
EXAMPLE III
Corresponding to the adaptive adjustment method for the sensitivity of the touch screen introduced in fig. 2, the present embodiment provides an adaptive adjustment system for the sensitivity of the touch screen, as shown in the structural block diagram of the adaptive adjustment system for the sensitivity of the touch screen shown in fig. 4, the system includes:
the main control CPU is used for sending the firmware program to the touch IC, judging the electromagnetic interference intensity of the touch screen, adjusting the parameters of the firmware program according to the electromagnetic environment interference intensity, and sending the adjusted parameters to the touch IC;
the touch IC is used for storing the firmware program sent by the main control CPU and receiving the parameters of the firmware program sent by the main control CPU; and the touch screen is also used for updating the firmware program according to the parameters and carrying out sampling adjustment according to the updated firmware program so as to realize adjustment of the sensitivity of the touch screen.
The above system further comprises: the main control CPU sends the firmware program to the touch IC through the IIC bus; the A/D sampling circuit is used for collecting the ripple wave fluctuation condition of the power supply; and the main control CPU is used for judging the electromagnetic interference intensity of the touch screen according to the ripple fluctuation condition.
The adaptive adjustment system for the sensitivity of the touch screen of the embodiment mainly adjusts the sensitivity of the touch screen through the following process.
1) The firmware program of the touch IC is integrated into the main control CPU, after the touch screen is powered on and started, the main control CPU can burn the firmware program into the touch IC through the IIC bus connected with the touch pad, and the current operation mode is that the touch IC is burnt when leaving a factory, and a developer cannot operate and modify the touch IC.
2) The touch screen mainboard is added with an A/D sampling circuit, and the ripple fluctuation condition of a power supply for supplying power to the touch IC is collected in real time. In the actual operation process, the a/D sampling precision can be selected according to the actual situation, and preferably, the embodiment adopts 10-bit a/D to sample 3.3V on the power supply side of the touch IC. Of course, the voltage of 3.3V mentioned in the present embodiment is not limited to this, and may be replaced by a voltage of 5V, 12V, etc. according to the voltage of the power supply side of the touch IC.
3) And judging the current electromagnetic environment interference intensity according to the ripple fluctuation amplitude, and further adjusting the report scanning frequency and the filtering parameter (also called filtering intensity) in the firmware program, so that the firmware program is in a relatively optimal touch coordinate acquisition mode.
For example, when the ripple fluctuation amplitude of the power supply is larger (the ripple fluctuation amplitude exceeds a first amplitude which can be set by a user) as sampled by the a/D sampling circuit, for example, fluctuates within ± 300mV, which indicates that the electromagnetic noise is very large (the electromagnetic environment interference intensity is high), the report scanning mode is adjusted to be low-frequency scanning, and the filtering intensity is increased;
when the ripple fluctuation amplitude is reduced (the second amplitude is less than the ripple fluctuation amplitude is less than the first amplitude), for example, when the ripple fluctuation amplitude fluctuates within +/-100 mV, which indicates that the electromagnetic noise is reduced (the electromagnetic environment interference intensity is medium), the report scanning mode is adjusted to be medium frequency scanning, the filtering intensity is properly reduced, and the useful signals are ensured not to be filtered;
when the ripple fluctuation amplitude is further reduced (the ripple fluctuation amplitude is less than or equal to the second amplitude), for example, fluctuates between ± 50mV or less, which indicates that the electromagnetic noise is small (the electromagnetic environment interference intensity is low), the report scanning mode is adjusted to high-frequency scanning, and the filtering intensity is further reduced.
And finally, if the power supply noise becomes high, the sampling frequency point becomes large, the system preferentially reflects the stability and sacrifices the response speed, and the reliability is ensured so as to adapt to various electromagnetic environments.
4) And the main control CPU sends the adjusted parameters of the firmware program to the touch IC, and the touch IC performs sampling adjustment according to the latest parameter setting, namely, the automatic adjustment of the touch sensitivity is realized.
From the above description, it can be known that the sensitivity of the touch screen is greatly affected by the power supply noise, and the invention adjusts the firmware program of the touch IC according to the power supply noise of the actual working condition, thereby realizing the automatic adjustment of the touch sensitivity.
The invention carries out A/D acquisition on the power supply, further adjusts the touch point acquisition window, realizes the best effect of touch control, and mainly realizes the following beneficial effects:
1) the sensitivity can be adaptively adjusted according to the electromagnetic environment of the working condition;
2) the method has wide adaptation to the environment, is beneficial to batch production and improves the efficiency;
3) the user experience is improved, and the complaint risk is reduced.
Of course, the above is a preferred embodiment of the present invention. It should be noted that, for a person skilled in the art, several modifications and refinements can be made without departing from the basic principle of the invention, and these modifications and refinements are also considered to be within the protective scope of the invention.
Claims (16)
1. A method for adaptively adjusting sensitivity of a touch screen is characterized by comprising the following steps:
judging the electromagnetic interference intensity of the touch screen;
adjusting parameters of a firmware program according to the electromagnetic environment interference intensity, and sending the adjusted parameters to a touch Integrated Circuit (IC) to realize the adjustment of the sensitivity of the touch screen; wherein the firmware program is located on the touch IC.
2. The method of claim 1, wherein before determining the electromagnetic interference strength of the touch screen, the method further comprises:
the CPU burns the firmware program onto the touch IC.
3. The method of claim 2, wherein burning the firmware program onto the touch IC by the master CPU comprises:
the main control CPU integrates a firmware program;
and the main control CPU burns the firmware program onto the touch IC through a communication line.
4. The method of claim 1, wherein determining the electromagnetic interference strength of the touch screen comprises:
the main control CPU collects ripple wave fluctuation conditions of the power supply through an analog-digital A/D sampling circuit;
and the main control CPU judges the electromagnetic interference intensity of the touch screen according to the ripple wave fluctuation condition.
5. The method of claim 4, wherein the ripple fluctuation condition comprises: ripple wave amplitude; judging the electromagnetic interference intensity of the touch screen according to the ripple fluctuation condition, comprising the following steps:
if the ripple wave fluctuation amplitude is larger than or equal to the first amplitude, determining that the electromagnetic environment interference intensity is high;
if the second amplitude is smaller than the ripple fluctuation amplitude and smaller than the first amplitude, determining that the electromagnetic environment interference intensity is medium;
and if the ripple fluctuation amplitude is less than or equal to the second amplitude, determining that the electromagnetic environment interference intensity is low.
6. The method of claim 5, wherein the parameters of the firmware program include at least one of: report scanning frequency and filtering strength.
7. The method of claim 6, wherein adjusting the firmware program parameters according to the EMI level comprises:
if the electromagnetic environment interference intensity is high, the master control CPU adjusts the report scanning frequency to be low frequency and adjusts the filtering intensity to be high intensity;
if the electromagnetic environment interference intensity is medium, the master control CPU adjusts the report scanning frequency to be medium frequency, and adjusts the filtering intensity to be medium intensity;
if the electromagnetic environment interference intensity is low, the main control CPU adjusts the report scanning frequency to high frequency and adjusts the filtering intensity to low intensity.
8. The method of claim 1, wherein sending the adjusted parameters to the touch IC to enable adjustment of touch screen sensitivity comprises:
the main control CPU sends the adjusted parameters to the touch IC; and the touch IC updates the firmware program according to the parameters and performs sampling adjustment according to the updated firmware program so as to realize adjustment of the sensitivity of the touch screen.
9. An adaptive adjusting device for touch screen sensitivity is applied to a main control processor CPU, and is characterized by comprising the following components:
the judging module is used for judging the electromagnetic interference intensity of the touch screen;
the adjusting module is used for adjusting parameters of a firmware program according to the electromagnetic environment interference intensity and sending the adjusted parameters to the touch integrated circuit IC so as to adjust the sensitivity of the touch screen; wherein the firmware program is located on the touch IC.
10. The apparatus of claim 9, further comprising:
and the burning module is used for burning the firmware program onto the touch IC.
11. The apparatus of claim 9, wherein the determining module comprises:
the acquisition unit is used for acquiring the ripple wave fluctuation condition of the power supply through the A/D sampling circuit;
and the judging unit is used for judging the electromagnetic interference intensity of the touch screen according to the ripple wave fluctuation condition.
12. The apparatus of claim 11, wherein the ripple fluctuation condition comprises: ripple wave amplitude;
the judging unit includes:
the first determining subunit is used for determining that the electromagnetic environment interference intensity is high under the condition that the ripple fluctuation amplitude is larger than or equal to a first amplitude;
the second determining subunit is used for determining the electromagnetic environment interference strength to be medium under the condition that the second amplitude value is smaller than the ripple fluctuation amplitude value and smaller than the first amplitude value;
and the third determining subunit is used for determining that the electromagnetic environment interference intensity is low under the condition that the ripple fluctuation amplitude is less than or equal to the second amplitude.
13. The apparatus of claim 12, wherein the parameters of the firmware program comprise at least one of: report scanning frequency and filtering strength.
14. The apparatus of claim 13, wherein the adjustment module comprises:
a first adjusting unit, configured to adjust the report scanning frequency to a low frequency and adjust the filtering strength to a high strength when the electromagnetic environment interference strength is high;
a second adjusting unit, configured to adjust the report scanning frequency to an intermediate frequency and adjust the filtering strength to an intermediate strength when the electromagnetic environment interference strength is medium;
and the third adjusting unit is used for adjusting the scanning frequency of the report point to high frequency and adjusting the filtering intensity to low intensity under the condition that the interference intensity of the electromagnetic environment is low.
15. An adaptive adjustment system for touch screen sensitivity, the system comprising: a main control processor CPU and a touch IC; wherein,
the main control CPU is used for sending a firmware program to the touch IC, judging the electromagnetic interference intensity of the touch screen, adjusting the parameters of the firmware program according to the electromagnetic environment interference intensity, and sending the adjusted parameters to the touch IC;
the touch IC is used for storing the firmware program sent by the main control CPU and receiving the parameters of the firmware program sent by the main control CPU; and the touch screen is also used for updating the firmware program according to the parameters and carrying out sampling adjustment according to the updated firmware program so as to realize adjustment of the sensitivity of the touch screen.
16. The system of claim 15,
the system further comprises: the analog-digital A/D sampling circuit is used for acquiring the ripple wave condition of the power supply;
and the main control CPU is used for judging the electromagnetic interference intensity of the touch screen according to the ripple wave fluctuation condition.
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| CN109657746A (en) * | 2018-11-22 | 2019-04-19 | 海宁市英德赛电子有限公司 | A kind of distributed diagnosis method of steel cylinder |
| CN111831153A (en) * | 2020-06-04 | 2020-10-27 | 珠海格力电器股份有限公司 | Capacitive touch screen control method and device and capacitive touch screen |
| CN112432308A (en) * | 2020-11-20 | 2021-03-02 | 珠海格力电器股份有限公司 | Touch interaction device, control method and device thereof and air conditioning unit |
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| CN111831153B (en) * | 2020-06-04 | 2022-01-18 | 珠海格力电器股份有限公司 | Capacitive touch screen control method and device and capacitive touch screen |
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Application publication date: 20171024 |