CN114327131B - Electromagnetic interference false touch prevention method, device, equipment and storage medium - Google Patents
Electromagnetic interference false touch prevention method, device, equipment and storage medium Download PDFInfo
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Abstract
The invention discloses an electromagnetic interference false touch prevention method, device, equipment and storage medium, wherein the method obtains a key value calibration value by simulating a use scene of a touch key under electromagnetic interference; obtaining the number of keys of touch keys in a vehicle, detecting the key value change of the corresponding key capacitance of the touch keys, and obtaining key value change parameters; and judging whether the current touch is normal trigger or false trigger according to the number of keys, the key value change parameter and the key value calibration value, so that the problem that the touch keys are triggered by errors in capacitance under the electromagnetic interference environment can be avoided, the accuracy of key touch judgment is ensured, and the speed and the efficiency of touch key detection are improved.
Description
Technical Field
The present invention relates to the field of electronic switch control technologies, and in particular, to a method, an apparatus, a device, and a storage medium for preventing erroneous touch by electromagnetic interference.
Background
With the development of automobile electronics and interior trim, there are fewer and fewer physical keys in the automobile and more touch keys, and the keys have the advantages of no mechanical travel, no abnormal sound, free modeling and the like, and are favored by more and more designers and consumers.
The principle of the touch key is that at the back of a cover plate of a touch area, a silk screen self-contained touch film (sensor) is adopted, an electric signal is connected to an Input Output (IO) port of a single chip (Programmable System Single Of Chip, PSOC) chip of a programmable system through a flexible circuit board (Flexible Printed Circuit, FPC) flat cable, the chip recognizes the change of the capacitance of the IO port, and the touch switch is judged whether to be pressed or not by combining proper software logic, and corresponding signals are Output.
However, the PSOC chip is usually obtained by continuously and circularly scanning the sensor capacitance change through software, and the basic principle of the touch key is to judge the touch action according to the capacitance change, and under certain electromagnetic interference environments (such as interphones), an electric field is very easy to influence the sensor and the FPC in the touch key, so that the capacitance is abnormal, and false triggering is generated.
Disclosure of Invention
The invention mainly aims to provide an electromagnetic interference false touch prevention method, device, equipment and storage medium, and aims to solve the technical problem that in the prior art, a touch key is easy to cause abnormal capacitance of a flexible circuit board under electromagnetic interference, so that the key is triggered by mistake.
In a first aspect, the present invention provides an electromagnetic interference false touch prevention method, including the steps of:
Simulating a use scene of a touch key under electromagnetic interference to obtain a key value calibration value of the key;
obtaining the number of keys of touch keys in a vehicle, detecting the key value change of the corresponding key capacitance of the touch keys, and obtaining key value change parameters;
and judging whether the current touch is normally triggered or wrongly triggered according to the number of keys, the key value change parameter and the key value calibration value of the keys.
Optionally, the simulating the usage scenario of the touch key under electromagnetic interference to obtain the key value calibration value includes:
touching the same key of the same display screen by using different touch actions under electromagnetic interference to obtain touch original data, and generating a corresponding touch action detection calibration value according to the touch original data;
touching different keys of different display screens with the same touch force under electromagnetic interference to obtain touch state data, and generating corresponding touch state detection calibration values according to the touch state data;
touching the same key of the same display screen at a preset working temperature under electromagnetic interference to obtain touch working data, and generating a corresponding touch environment detection calibration value according to the touch working data;
And generating a key value calibration value according to the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value.
Optionally, the touching the same key of the same display screen by using different touching actions under electromagnetic interference obtains touching original data, and generates a corresponding touching action detection calibration value according to the touching original data, including:
touching the same key of the same display screen by using different touch actions under electromagnetic interference to obtain touch original data;
and acquiring an effective signal when the touch pen touches from the touch original data, acquiring a signal minimum value in the effective signal, and generating a touch action detection calibration value according to the signal minimum value.
Optionally, the touching the different keys of different display screens with the same touching force under electromagnetic interference to obtain touching state data, and generating a corresponding touching state detection calibration value according to the touching state data includes:
touching different keys of different display screens with the same touch force under electromagnetic interference to obtain touch state data;
acquiring touch pen state data pressed and lifted when a touch pen touches from the touch state data, and acquiring manual state data pressed and lifted when a tester touches;
And comparing the touch pen state data with the manual state data, and generating a touch state detection calibration value according to the consistent data in the comparison result.
Optionally, the touching the same key of the same display screen under electromagnetic interference at a preset working temperature to obtain touch working data, and generating a corresponding touch environment detection calibration value according to the touch working data includes:
touching the same key of the same display screen at a preset working temperature under electromagnetic interference to obtain touch working data;
classifying the touch working data according to different temperatures and different accumulated storage times to obtain classification results;
and obtaining a mapping environment calibration value corresponding to the classification result from a preset database, and generating a touch environment detection calibration value according to the mapping environment calibration value.
Optionally, the generating a key value calibration according to the touch action detection calibration, the touch state detection calibration and the touch environment detection calibration includes:
and generating different key value judgment thresholds corresponding to different touch actions under different touch environments and different touch states according to the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value, and taking each key value judgment threshold as a key value calibration value.
Optionally, the judging that the current touch is normal trigger or false trigger according to the number of keys, the key value variation parameter and the key value calibration value includes:
acquiring a current touch environment, a current touch state and a current touch action, and determining a current key value calibration value from key value calibration values according to the current touch environment, the current touch state and the current touch action;
when the number of keys is multiple, the number of changed keys corresponding to the key value change parameter is greater than a preset number or the key value change parameter is not greater than the current key value calibration value, judging that the current touch is false trigger;
when the number of keys is a plurality of, and the number of changed keys corresponding to the key value change parameter is not greater than the preset number and the key value change parameter is greater than the current key value calibration value, judging that the current touch is normally triggered;
and when the number of keys is one, acquiring an upper-layer key value change parameter of an upper-layer sensor and a lower-layer key value change parameter of a lower-layer sensor of the touch key, and judging that the current touch is normally triggered when the upper-layer key value change parameter or the lower-layer key value change parameter is larger than the current key value calibration value.
In order to achieve the above object, the present invention further provides an electromagnetic interference anti-false touch device, which includes:
the calibration value acquisition module is used for simulating the use scene of the touch key under electromagnetic interference to acquire a key value calibration value;
the detection module is used for acquiring the number of keys of the touch keys in the vehicle, detecting the key value change of the corresponding key capacitor of the touch keys and acquiring key value change parameters;
and the judging module is used for judging whether the current touch is normal trigger or false trigger according to the key number, the key value change parameter and the key value calibration value.
In order to achieve the above object, the present invention further provides an electromagnetic interference anti-false touch device, including: the system comprises a memory, a processor and an electromagnetic interference false touch prevention program stored on the memory and capable of running on the processor, wherein the electromagnetic interference false touch prevention program is configured to realize the steps of the electromagnetic interference false touch prevention method.
In a fourth aspect, to achieve the above object, the present invention further provides a storage medium, where an electromagnetic interference false touch prevention program is stored, where the electromagnetic interference false touch prevention program implements the steps of the electromagnetic interference false touch prevention method described above when executed by a processor.
According to the electromagnetic interference false touch prevention method, the key value calibration value is obtained by simulating the use scene of the touch key under electromagnetic interference; obtaining the number of keys of touch keys in a vehicle, detecting the key value change of the corresponding key capacitance of the touch keys, and obtaining key value change parameters; and judging whether the current touch is normal trigger or false trigger according to the number of keys, the key value change parameter and the key value calibration value, so that the problem that the touch keys are triggered by errors in capacitance under the electromagnetic interference environment can be avoided, the accuracy of key touch judgment is ensured, and the speed and the efficiency of touch key detection are improved.
Drawings
FIG. 1 is a schematic diagram of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flowchart of a first embodiment of an electromagnetic interference touch error prevention method according to the present invention;
FIG. 3 is a flowchart of a second embodiment of an electromagnetic interference touch error prevention method according to the present invention;
FIG. 4 is a flowchart of a third embodiment of an electromagnetic interference touch error prevention method according to the present invention;
FIG. 5 is a flowchart of a fourth embodiment of an electromagnetic interference touch error prevention method according to the present invention;
FIG. 6 is a flowchart of a fifth embodiment of an electromagnetic interference touch error prevention method according to the present invention;
FIG. 7 is a flowchart of a sixth embodiment of an electromagnetic interference touch error prevention method according to the present invention;
FIG. 8 is a flowchart of a seventh embodiment of an electromagnetic interference touch error prevention method according to the present invention;
fig. 9 is a functional block diagram of a first embodiment of an electromagnetic interference anti-false touch device according to the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The solution of the embodiment of the invention mainly comprises the following steps: obtaining a key value calibration value by simulating a use scene of a touch key under electromagnetic interference; obtaining the number of keys of touch keys in a vehicle, detecting the key value change of the corresponding key capacitance of the touch keys, and obtaining key value change parameters; judging whether the current touch is normal trigger or false trigger according to the number of keys, the key value change parameter and the key value calibration value, the problem that the touch keys are triggered by errors due to abnormal capacitance in an electromagnetic interference environment can be avoided, the accuracy of key touch judgment is ensured, the speed and efficiency of touch key detection are improved, and the technical problem that the touch keys in the prior art are triggered by errors due to abnormal capacitance of a flexible circuit board under electromagnetic interference is solved.
Referring to fig. 1, fig. 1 is a schematic device structure diagram of a hardware running environment according to an embodiment of the present invention.
As shown in fig. 1, the apparatus may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., wi-Fi interface). The Memory 1005 may be a high-speed RAM Memory or a stable Memory (Non-Volatile Memory), such as a disk Memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
It will be appreciated by those skilled in the art that the apparatus structure shown in fig. 1 is not limiting of the apparatus and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and an electromagnetic interference false touch prevention program may be included in the memory 1005 as one type of storage medium.
The device of the present invention invokes the electromagnetic interference anti-false touch program stored in the memory 1005 through the processor 1001, and performs the following operations:
simulating a use scene of a touch key under electromagnetic interference to obtain a key value calibration value of the key;
obtaining the number of keys of touch keys in a vehicle, detecting the key value change of the corresponding key capacitance of the touch keys, and obtaining key value change parameters;
and judging whether the current touch is normally triggered or wrongly triggered according to the number of keys, the key value change parameter and the key value calibration value of the keys.
The device of the present invention invokes the electromagnetic interference anti-false touch program stored in the memory 1005 through the processor 1001, and also performs the following operations:
touching the same key of the same display screen by using different touch actions under electromagnetic interference to obtain touch original data, and generating a corresponding touch action detection calibration value according to the touch original data;
touching different keys of different display screens with the same touch force under electromagnetic interference to obtain touch state data, and generating corresponding touch state detection calibration values according to the touch state data;
touching the same key of the same display screen at a preset working temperature under electromagnetic interference to obtain touch working data, and generating a corresponding touch environment detection calibration value according to the touch working data;
And generating a key value calibration value according to the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value.
The device of the present invention invokes the electromagnetic interference anti-false touch program stored in the memory 1005 through the processor 1001, and also performs the following operations:
touching the same key of the same display screen by using different touch actions under electromagnetic interference to obtain touch original data;
and acquiring an effective signal when the touch pen touches from the touch original data, acquiring a signal minimum value in the effective signal, and generating a touch action detection calibration value according to the signal minimum value.
The device of the present invention invokes the electromagnetic interference anti-false touch program stored in the memory 1005 through the processor 1001, and also performs the following operations:
touching different keys of different display screens with the same touch force under electromagnetic interference to obtain touch state data;
acquiring touch pen state data pressed and lifted when a touch pen touches from the touch state data, and acquiring manual state data pressed and lifted when a tester touches;
and comparing the touch pen state data with the manual state data, and generating a touch state detection calibration value according to the consistent data in the comparison result.
The device of the present invention invokes the electromagnetic interference anti-false touch program stored in the memory 1005 through the processor 1001, and also performs the following operations:
touching the same key of the same display screen at a preset working temperature under electromagnetic interference to obtain touch working data;
classifying the touch working data according to different temperatures and different accumulated storage times to obtain classification results;
and obtaining a mapping environment calibration value corresponding to the classification result from a preset database, and generating a touch environment detection calibration value according to the mapping environment calibration value.
The device of the present invention invokes the electromagnetic interference anti-false touch program stored in the memory 1005 through the processor 1001, and also performs the following operations:
and generating different key value judgment thresholds corresponding to different touch actions under different touch environments and different touch states according to the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value, and taking each key value judgment threshold as a key value calibration value.
The device of the present invention invokes the electromagnetic interference anti-false touch program stored in the memory 1005 through the processor 1001, and also performs the following operations:
acquiring a current touch environment, a current touch state and a current touch action, and determining a current key value calibration value from key value calibration values according to the current touch environment, the current touch state and the current touch action;
When the number of keys is multiple, the number of changed keys corresponding to the key value change parameter is greater than a preset number or the key value change parameter is not greater than the current key value calibration value, judging that the current touch is false trigger;
when the number of keys is a plurality of, and the number of changed keys corresponding to the key value change parameter is not greater than the preset number and the key value change parameter is greater than the current key value calibration value, judging that the current touch is normally triggered;
and when the number of keys is one, acquiring an upper-layer key value change parameter of an upper-layer sensor and a lower-layer key value change parameter of a lower-layer sensor of the touch key, and judging that the current touch is normally triggered when the upper-layer key value change parameter or the lower-layer key value change parameter is larger than the current key value calibration value.
According to the scheme, the key value calibration value is obtained by simulating the use scene of the touch key under electromagnetic interference; obtaining the number of keys of touch keys in a vehicle, detecting the key value change of the corresponding key capacitance of the touch keys, and obtaining key value change parameters; and judging whether the current touch is normal trigger or false trigger according to the number of keys, the key value change parameter and the key value calibration value, so that the problem that the touch keys are triggered by errors in capacitance under the electromagnetic interference environment can be avoided, the accuracy of key touch judgment is ensured, and the speed and the efficiency of touch key detection are improved.
Based on the hardware structure, the embodiment of the electromagnetic interference anti-false touch method is provided.
Referring to fig. 2, fig. 2 is a flowchart of a first embodiment of an electromagnetic interference touch error prevention method according to the present invention.
In a first embodiment, the electromagnetic interference false touch prevention method includes the following steps:
and S10, simulating a use scene of the touch key under electromagnetic interference to obtain a key value calibration value of the key.
It should be noted that, under electromagnetic interference, each use scene of a user touching a key can be simulated, so as to obtain a corresponding calibration value under each use scene, namely, a key value calibration value, which is used for subsequently judging normal touching or false touching.
And S20, acquiring the number of keys of the touch keys in the vehicle, and detecting the key value change of the corresponding key capacitance of the touch keys to obtain a key value change parameter.
It can be understood that the number of keys is the number corresponding to the touch keys of the in-vehicle central control screen or the liquid crystal control screen, and the key value change parameters corresponding to the key value change can be obtained by detecting the key value change of the key capacitance corresponding to the touch keys.
And step S30, judging whether the current touch is normal trigger or false trigger according to the number of keys, the key value change parameter and the key value calibration value.
It should be understood that the number of keys, the key value variation parameter and the key value calibration value can be used for judging whether the touch operation of different touch use scenes is normal triggering or false triggering.
According to the scheme, the key value calibration value is obtained by simulating the use scene of the touch key under electromagnetic interference; obtaining the number of keys of touch keys in a vehicle, detecting the key value change of the corresponding key capacitance of the touch keys, and obtaining key value change parameters; and judging whether the current touch is normal trigger or false trigger according to the number of keys, the key value change parameter and the key value calibration value, so that the problem that the touch keys are triggered by errors in capacitance under the electromagnetic interference environment can be avoided, the accuracy of key touch judgment is ensured, and the speed and the efficiency of touch key detection are improved.
Further, fig. 3 is a schematic flow chart of a second embodiment of the electromagnetic interference touch error prevention method of the present invention, as shown in fig. 3, the second embodiment of the electromagnetic interference touch error prevention method of the present invention is proposed based on the first embodiment, and in this embodiment, the step S10 specifically includes the following steps:
and S11, touching the same key of the same display screen by using different touch actions under electromagnetic interference to obtain touch original data, and generating a corresponding touch action detection calibration value according to the touch original data.
It should be noted that, the same key of the same display screen can be touched by using different touch actions under electromagnetic interference, so as to simulate the scene that different users touch the same key of the same display screen, the touch actions can be identified, thus the acquired touch original data can generate a corresponding touch action detection calibration value according to the touch original data, and the touch action detection calibration value can accurately detect the touch action of the finger.
And step S12, touching different keys of different display screens by using the same touch force under electromagnetic interference to obtain touch state data, and generating a corresponding touch state detection calibration value according to the touch state data.
It can be understood that the same touch force is used for touching different keys of different display screens under electromagnetic interference, and the same person can be simulated to touch different display screens with the same force, so that touch detection results of different keys of different display screens are obtained, corresponding touch state data are generated, and touch state detection calibration values corresponding to different touch states can be generated according to the touch state data.
And S13, touching the same key of the same display screen at a preset working temperature under electromagnetic interference to obtain touch working data, and generating a corresponding touch environment detection calibration value according to the touch working data.
It should be understood that the same key of the same display screen may be touched at a preset operating temperature under electromagnetic interference, so as to simulate touch operating data corresponding to the key of the display screen at different operating temperatures under electromagnetic interference, where the preset operating temperature may be set to +80 ℃, may be set to-30 ℃, may be set to other values, such as-35 ℃, -40 ℃, +85 ℃ +90 ℃, and the like, and the embodiment is not limited thereto; and generating touch environment detection calibration values under different working environments according to the touch working data.
And S14, generating a key value calibration value according to the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value.
It will be appreciated that by combining the touch action detection calibration, the touch state detection calibration, and the touch environment detection calibration, the corresponding calibration, i.e., key value calibration, for each use scenario may be determined.
According to the scheme, the same key of the same display screen is touched by using different touch actions under electromagnetic interference, touch original data are obtained, and corresponding touch action detection calibration values are generated according to the touch original data; touching different keys of different display screens with the same touch force under electromagnetic interference to obtain touch state data, and generating corresponding touch state detection calibration values according to the touch state data; touching the same key of the same display screen at a preset working temperature under electromagnetic interference to obtain touch working data, and generating a corresponding touch environment detection calibration value according to the touch working data; generating a key value calibration value according to the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value; the key value calibration value of the use scene of each touch key can be obtained, the false touch judgment can be performed in more detail and accurately, and the accuracy and the efficiency of the key touch judgment are improved.
Further, fig. 4 is a schematic flow chart of a third embodiment of the electromagnetic interference touch error prevention method according to the present invention, as shown in fig. 4, based on the second embodiment, the third embodiment of the electromagnetic interference touch error prevention method according to the present invention is proposed, and in this embodiment, the step S11 specifically includes the following steps:
step S111, touching the same key of the same display screen by using different touch actions under electromagnetic interference to obtain touch original data.
It should be noted that, the same key of the same display screen can be touched by using different touch actions under electromagnetic interference, so as to simulate the scene that different users touch the same key of the same display screen, and the touch actions can be identified, so that the acquired touch original data are acquired.
And step S112, acquiring an effective signal when the touch pen touches from the touch original data, acquiring a signal minimum value in the effective signal, and generating a touch action detection calibration value according to the signal minimum value.
It can be understood that the effective signal generated by the touch pen during touching can be obtained from the touch original data, that is, the effective signal corresponding to the touch action generated by the touch pen according with the setting in the process of clicking the touch screen, and the minimum signal value in the effective signal can be obtained through sorting and screening.
In a specific implementation, a normal touch finger can be represented by an 8mm capacitance pen, or a display screen touch test can be performed by representing a normal touch finger by a capacitance pen with other specifications, which is not limited in this embodiment; the display screen is pressed down and lifted up through the 8mm capacitance pen, signals when the 8mm capacitance pen touches can be detected, so that the minimum value of effective signals when the effective touch is found out, and a touch action detection calibration value is calculated according to the minimum value of the signals.
According to the scheme, the touch original data are obtained by touching the same key of the same display screen through different touch actions under electromagnetic interference; the method comprises the steps of obtaining an effective signal when a touch pen touches from touch original data, obtaining a signal minimum value in the effective signal, generating a touch action detection calibration value according to the signal minimum value, accurately obtaining the touch action detection calibration value, judging the effectiveness of different touch actions, preparing for subsequent determination of a key value calibration value of a key, and further improving the accuracy of false touch judgment.
Further, fig. 5 is a schematic flow chart of a fourth embodiment of the electromagnetic interference touch error prevention method according to the present invention, as shown in fig. 5, based on the second embodiment, the fourth embodiment of the electromagnetic interference touch error prevention method according to the present invention is proposed, and in this embodiment, the step S12 specifically includes the following steps:
Step S121, touching different keys of different display screens with the same touch force under electromagnetic interference to obtain touch state data.
It should be noted that, touching different keys of different display screens with the same touch force can obtain the touch pen and the same tester touching each touch key of different display screens with the same force, so as to obtain the corresponding touch state data.
Step S122, acquiring the state data of the touch pen pressed and lifted when the touch pen touches from the touch state data, and acquiring the manual state data pressed and lifted when the tester touches.
It is understood that from the touch state data, state data of the touch pen pressed and lifted when the touch pen touches can be obtained, and state data of the corresponding manual touch by the tester when pressed and lifted is obtained.
And step 123, comparing the touch pen state data with the manual state data, and generating a touch state detection calibration value according to the consistent data in the comparison result.
It should be understood that, by comparing the stylus state data with the manual state data, a corresponding comparison result can be generated, and further, data with consistent data detection results in the stylus state data and the manual state data can be used as a calibration value for determining touch state detection.
According to the scheme, different keys of different display screens are touched by using the same touch force under electromagnetic interference, so that touch state data are obtained; acquiring touch pen state data pressed and lifted when a touch pen touches from the touch state data, and acquiring manual state data pressed and lifted when a tester touches; and comparing the touch pen state data with the manual state data, generating a touch state detection calibration value according to the consistent data in the comparison result, accurately obtaining the touch state detection calibration value, judging the validity of different touch states, preparing for the subsequent determination of the key value calibration value, and further improving the accuracy of false touch judgment.
Further, fig. 6 is a schematic flow chart of a fifth embodiment of the electromagnetic interference touch error prevention method according to the present invention, as shown in fig. 6, based on a second embodiment, the fifth embodiment of the electromagnetic interference touch error prevention method according to the present invention is proposed, and in this embodiment, the step S13 specifically includes the following steps:
step S131, touching the same key of the same display screen at a preset working temperature under electromagnetic interference to obtain touch working data.
It should be noted that, touching the same key of the same display screen at the preset working temperature under electromagnetic interference can obtain the touch working data under different working temperature environments.
And S132, classifying the touch work data according to different temperatures and different accumulated storage times to obtain a classification result.
It can be understood that the touch working data can be classified by different temperatures and different accumulated storage times, that is, after different temperatures and different accumulated storage times are classified corresponding to different data environments, corresponding classification results are obtained.
And step S133, obtaining a mapping environment calibration value corresponding to the classification result from a preset database, and generating a touch environment detection calibration value according to the mapping environment calibration value.
It should be understood that the preset database stores mapping relations of different environment calibration values corresponding to different classification results, the mapping environment calibration values corresponding to the classification results can be obtained through the preset database, and the touch environment detection calibration values under different working environments can be determined according to the mapping environment calibration values.
In a specific implementation, after the same key is set on the same display screen and is stored in a temperature box for 4 hours at the working temperature of +80+/-5 ℃ to-30+/-5 ℃, the test is immediately started after the key is taken out, or touch test is directly performed in the temperature box through detection equipment to obtain corresponding touch data, when the corresponding touch action can be identified, the key can be touched through a touch pen at a preset distance, for example, a distance of 30-50mm from a panel of the display screen, and the preset key speed is used, so that the touch data generated in the process of touch pressing and lifting are identified.
According to the scheme, the touch working data are obtained by touching the same key of the same display screen at the preset working temperature under electromagnetic interference; classifying the touch working data according to different temperatures and different accumulated storage times to obtain classification results; the mapping environment calibration value corresponding to the classification result is obtained from a preset database, the touch environment detection calibration value is generated according to the mapping environment calibration value, the touch environment detection calibration value can be accurately obtained, the effectiveness of different touch states is judged, preparation is made for the subsequent determination of the key value calibration value of the key, and the accuracy of false touch judgment is further improved.
Further, fig. 7 is a schematic flow chart of a sixth embodiment of the electromagnetic interference touch error prevention method according to the present invention, as shown in fig. 7, based on the second embodiment, the sixth embodiment of the electromagnetic interference touch error prevention method according to the present invention is proposed, and in this embodiment, the step S14 specifically includes the following steps:
step S141, generating different key value judgment thresholds corresponding to different touch actions in different touch environments and different touch states according to the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value, and taking each key value judgment threshold as a key value calibration value.
It should be noted that, different key value judgment thresholds corresponding to different touch actions under different touch environments and different touch states are generated through the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value, and are used for judging whether the current touch key is effectively touched, so that the key value judgment thresholds corresponding to different touch environments, different touch states and different combinations of different touch actions can be used as key value calibration values.
According to the scheme, the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value are used for generating different key value judgment thresholds corresponding to different touch actions under different touch environments and different touch states, and each key value judgment threshold is used as the key value calibration value, so that the key value calibration value of the use scene of each touch key can be obtained, the false touch judgment can be performed in more detail and accurately, and the accuracy and the efficiency of the key touch judgment are improved.
Further, fig. 8 is a flowchart of a seventh embodiment of the electromagnetic interference touch error prevention method according to the present invention, as shown in fig. 8, and the seventh embodiment of the electromagnetic interference touch error prevention method according to the present invention is proposed based on the first embodiment, in which the step S30 specifically includes the following steps:
Step S31, a current touch environment, a current touch state and a current touch action are obtained, and a current key value calibration value is determined from key value calibration values according to the current touch environment, the current touch state and the current touch action.
It should be noted that, the current touch environment is a current environment corresponding to a current touch behavior, the current touch state is a touch state corresponding to the current touch behavior, the current touch action is a touch action corresponding to the current touch behavior, and the matching calibration value is obtained from the key value calibration values through the current touch environment, the current touch state and the current touch action to be used as the current key value calibration value.
And S32, when the number of keys is a plurality of keys, and the number of the changed keys corresponding to the key value change parameter is larger than a preset number or the key value change parameter is not larger than the current key value calibration value, judging that the current touch is false trigger.
It can be understood that when the number of keys is plural, and the number of changed keys corresponding to the key value change parameter is greater than a preset number or the key value change parameter is not greater than the current key value calibration value, determining that the current touch is a false trigger; when the number of keys is more than 3, and the number of the changed keys corresponding to the key value change parameter is greater than 3, the current touch action is considered as an abnormal touch action if the key value change parameter is not greater than the current key value calibration value, and at the moment, the current touch can be judged to be false trigger.
And step S33, when the number of keys is a plurality of keys, and the number of the changed keys corresponding to the key value change parameter is not greater than the preset number and the key value change parameter is greater than the current key value calibration value, judging that the current touch is normally triggered.
It should be understood that, if the key value variation parameter is greater than the current key value calibration value, the current touch action is considered to be a normal touch action, and when the number of keys is a plurality of, the number of variation keys corresponding to the key value variation parameter is not greater than a preset number and the key value variation parameter is greater than the current key value calibration value, the current touch can be determined to be a normal trigger.
In a specific implementation, if key value changes of touch signals of all key values of a plurality of (more than 3) keys are detected at the same time, the touch signals are regarded as interference signals, if false triggering is performed, no response is performed, the test of a test machine after the interphone test is modified is obviously improved, and the false triggering does not occur.
And step S34, when the number of keys is one, acquiring an upper-layer key value change parameter of an upper-layer sensor and a lower-layer key value change parameter of a lower-layer sensor of the touch key, and judging that the current touch is normally triggered when the upper-layer key value change parameter or the lower-layer key value change parameter is larger than the current key value calibration value.
It can be understood that when the number of the keys is one, two sensors may be arranged on the structural arrangement of the touch keys, two paths of IO access signals of a chip are respectively used, a dual Sensor is used for redundancy design, and when any one Sensor detects an effective touch, that is, the effective touch is considered, that is, the upper-layer key value change parameter or the lower-layer key value change parameter is greater than the current key value calibration value, the current touch is judged to be normal trigger.
According to the scheme, the current key value calibration value is determined from the key value calibration values according to the current touch environment, the current touch state and the current touch action by acquiring the current touch environment, the current touch state and the current touch action; when the number of keys is multiple, the number of changed keys corresponding to the key value change parameter is greater than a preset number or the key value change parameter is not greater than the current key value calibration value, judging that the current touch is false trigger; when the number of keys is a plurality of, and the number of changed keys corresponding to the key value change parameter is not greater than the preset number and the key value change parameter is greater than the current key value calibration value, judging that the current touch is normally triggered; when the number of keys is one, an upper key value change parameter of an upper sensor of the touch key and a lower key value change parameter of a lower sensor are obtained, and when the upper key value change parameter or the lower key value change parameter is larger than the current key value calibration value, the current touch is judged to be normal trigger, so that the problem of false triggering of the touch key caused by abnormal capacitance in an electromagnetic interference environment can be avoided, the accuracy of key touch judgment is ensured, and the speed and the efficiency of touch key detection are improved.
Correspondingly, the invention further provides an electromagnetic interference false touch prevention device.
Referring to fig. 9, fig. 9 is a functional block diagram of a first embodiment of an electromagnetic interference anti-false touch device according to the present invention.
In a first embodiment of the electromagnetic interference touch error prevention device of the present invention, the electromagnetic interference touch error prevention device includes:
the calibration value obtaining module 10 is configured to simulate a use scenario of a touch key under electromagnetic interference, and obtain a key value calibration value.
The detection module 20 is configured to obtain the number of keys of the touch keys in the vehicle, detect a key value change of a key capacitance corresponding to the touch key, and obtain a key value change parameter.
The judging module 30 is configured to judge that the current touch is normal trigger or false trigger according to the number of keys, the key value variation parameter and the key value calibration value.
The calibration value obtaining module 10 is further configured to touch the same key of the same display screen by using different touch actions under electromagnetic interference, obtain touch original data, and generate a corresponding touch action detection calibration value according to the touch original data; touching different keys of different display screens with the same touch force under electromagnetic interference to obtain touch state data, and generating corresponding touch state detection calibration values according to the touch state data; touching the same key of the same display screen at a preset working temperature under electromagnetic interference to obtain touch working data, and generating a corresponding touch environment detection calibration value according to the touch working data; and generating a key value calibration value according to the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value.
The calibration value obtaining module 10 is further configured to touch the same key of the same display screen by using different touch actions under electromagnetic interference, so as to obtain touch original data; and acquiring an effective signal when the touch pen touches from the touch original data, acquiring a signal minimum value in the effective signal, and generating a touch action detection calibration value according to the signal minimum value.
The calibration value obtaining module 10 is further configured to touch different keys of different display screens with the same touch force under electromagnetic interference, so as to obtain touch state data; acquiring touch pen state data pressed and lifted when a touch pen touches from the touch state data, and acquiring manual state data pressed and lifted when a tester touches; and comparing the touch pen state data with the manual state data, and generating a touch state detection calibration value according to the consistent data in the comparison result.
The calibration value obtaining module 10 is further configured to touch the same key of the same display screen at a preset working temperature under electromagnetic interference to obtain touch working data; classifying the touch working data according to different temperatures and different accumulated storage times to obtain classification results; and obtaining a mapping environment calibration value corresponding to the classification result from a preset database, and generating a touch environment detection calibration value according to the mapping environment calibration value.
The calibration value obtaining module 10 is further configured to generate different key value judgment thresholds corresponding to different touch actions under different touch environments and different touch states according to the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value, and use each key value judgment threshold as a key value calibration value.
The judging module 30 is further configured to obtain a current touch environment, a current touch state, and a current touch action, and determine a current key value calibration value from key value calibration values according to the current touch environment, the current touch state, and the current touch action; when the number of keys is multiple, the number of changed keys corresponding to the key value change parameter is greater than a preset number or the key value change parameter is not greater than the current key value calibration value, judging that the current touch is false trigger; when the number of keys is a plurality of, and the number of changed keys corresponding to the key value change parameter is not greater than the preset number and the key value change parameter is greater than the current key value calibration value, judging that the current touch is normally triggered; and when the number of keys is one, acquiring an upper-layer key value change parameter of an upper-layer sensor and a lower-layer key value change parameter of a lower-layer sensor of the touch key, and judging that the current touch is normally triggered when the upper-layer key value change parameter or the lower-layer key value change parameter is larger than the current key value calibration value.
The steps of implementing each functional module of the electromagnetic interference anti-false touch device can refer to each embodiment of the electromagnetic interference anti-false touch method of the present invention, and will not be described herein.
In addition, the embodiment of the invention also provides a storage medium, wherein the storage medium stores an electromagnetic interference false touch prevention program, and the electromagnetic interference false touch prevention program realizes the following operations when being executed by a processor:
simulating a use scene of a touch key under electromagnetic interference to obtain a key value calibration value of the key;
obtaining the number of keys of touch keys in a vehicle, detecting the key value change of the corresponding key capacitance of the touch keys, and obtaining key value change parameters;
and judging whether the current touch is normally triggered or wrongly triggered according to the number of keys, the key value change parameter and the key value calibration value of the keys.
Further, the electromagnetic interference false touch prevention program further realizes the following operations when executed by the processor:
touching the same key of the same display screen by using different touch actions under electromagnetic interference to obtain touch original data, and generating a corresponding touch action detection calibration value according to the touch original data;
touching different keys of different display screens with the same touch force under electromagnetic interference to obtain touch state data, and generating corresponding touch state detection calibration values according to the touch state data;
Touching the same key of the same display screen at a preset working temperature under electromagnetic interference to obtain touch working data, and generating a corresponding touch environment detection calibration value according to the touch working data;
and generating a key value calibration value according to the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value.
Further, the electromagnetic interference false touch prevention program further realizes the following operations when executed by the processor:
touching the same key of the same display screen by using different touch actions under electromagnetic interference to obtain touch original data;
and acquiring an effective signal when the touch pen touches from the touch original data, acquiring a signal minimum value in the effective signal, and generating a touch action detection calibration value according to the signal minimum value.
Further, the electromagnetic interference false touch prevention program further realizes the following operations when executed by the processor:
touching different keys of different display screens with the same touch force under electromagnetic interference to obtain touch state data;
acquiring touch pen state data pressed and lifted when a touch pen touches from the touch state data, and acquiring manual state data pressed and lifted when a tester touches;
And comparing the touch pen state data with the manual state data, and generating a touch state detection calibration value according to the consistent data in the comparison result.
Further, the electromagnetic interference false touch prevention program further realizes the following operations when executed by the processor:
touching the same key of the same display screen at a preset working temperature under electromagnetic interference to obtain touch working data;
classifying the touch working data according to different temperatures and different accumulated storage times to obtain classification results;
and obtaining a mapping environment calibration value corresponding to the classification result from a preset database, and generating a touch environment detection calibration value according to the mapping environment calibration value.
Further, the electromagnetic interference false touch prevention program further realizes the following operations when executed by the processor:
and generating different key value judgment thresholds corresponding to different touch actions under different touch environments and different touch states according to the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value, and taking each key value judgment threshold as a key value calibration value.
Further, the electromagnetic interference false touch prevention program further realizes the following operations when executed by the processor:
Acquiring a current touch environment, a current touch state and a current touch action, and determining a current key value calibration value from key value calibration values according to the current touch environment, the current touch state and the current touch action;
when the number of keys is multiple, the number of changed keys corresponding to the key value change parameter is greater than a preset number or the key value change parameter is not greater than the current key value calibration value, judging that the current touch is false trigger;
when the number of keys is a plurality of, and the number of changed keys corresponding to the key value change parameter is not greater than the preset number and the key value change parameter is greater than the current key value calibration value, judging that the current touch is normally triggered;
and when the number of keys is one, acquiring an upper-layer key value change parameter of an upper-layer sensor and a lower-layer key value change parameter of a lower-layer sensor of the touch key, and judging that the current touch is normally triggered when the upper-layer key value change parameter or the lower-layer key value change parameter is larger than the current key value calibration value.
According to the scheme, the key value calibration value is obtained by simulating the use scene of the touch key under electromagnetic interference; obtaining the number of keys of touch keys in a vehicle, detecting the key value change of the corresponding key capacitance of the touch keys, and obtaining key value change parameters; and judging whether the current touch is normal trigger or false trigger according to the number of keys, the key value change parameter and the key value calibration value, so that the problem that the touch keys are triggered by errors in capacitance under the electromagnetic interference environment can be avoided, the accuracy of key touch judgment is ensured, and the speed and the efficiency of touch key detection are improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (8)
1. An electromagnetic interference false touch prevention method is characterized by comprising the following steps:
Simulating a use scene of a touch key under electromagnetic interference to obtain a key value calibration value of the key;
obtaining the number of keys of touch keys in a vehicle, detecting the key value change of the corresponding key capacitance of the touch keys, and obtaining key value change parameters;
judging whether the current touch is normally triggered or wrongly triggered according to the number of keys, the key value change parameter and the key value calibration value of the keys;
the method for simulating the use scene of the touch key under electromagnetic interference to obtain the key value calibration value of the key comprises the following steps:
touching the same key of the same display screen by using different touch actions under electromagnetic interference to obtain touch original data, and generating a corresponding touch action detection calibration value according to the touch original data;
touching different keys of different display screens with the same touch force under electromagnetic interference to obtain touch state data, and generating corresponding touch state detection calibration values according to the touch state data;
touching the same key of the same display screen at a preset working temperature under electromagnetic interference to obtain touch working data, and generating a corresponding touch environment detection calibration value according to the touch working data;
Generating a key value calibration value according to the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value;
wherein the generating a key value calibration according to the touch action detection calibration, the touch state detection calibration, and the touch environment detection calibration includes:
and generating different key value judgment thresholds corresponding to different touch actions under different touch environments and different touch states according to the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value, and taking each key value judgment threshold as a key value calibration value.
2. The method for preventing false touch by electromagnetic interference according to claim 1, wherein the step of touching the same key of the same display screen with different touch actions under electromagnetic interference to obtain touch raw data, and generating a corresponding touch action detection calibration value according to the touch raw data comprises the steps of:
touching the same key of the same display screen by using different touch actions under electromagnetic interference to obtain touch original data;
and acquiring an effective signal when the touch pen touches from the touch original data, acquiring a signal minimum value in the effective signal, and generating a touch action detection calibration value according to the signal minimum value.
3. The method for preventing false touch by electromagnetic interference according to claim 1, wherein touching different keys of different display screens with the same touch force under electromagnetic interference to obtain touch state data, and generating a corresponding touch state detection calibration value according to the touch state data comprises:
touching different keys of different display screens with the same touch force under electromagnetic interference to obtain touch state data;
acquiring touch pen state data pressed and lifted when a touch pen touches from the touch state data, and acquiring manual state data pressed and lifted when a tester touches;
and comparing the touch pen state data with the manual state data, and generating a touch state detection calibration value according to the consistent data in the comparison result.
4. The method for preventing false touch by electromagnetic interference as set forth in claim 1, wherein said touching the same key of the same display screen at a preset operating temperature under electromagnetic interference to obtain touch operation data, generating a corresponding touch environment detection calibration value according to the touch operation data, comprises:
touching the same key of the same display screen at a preset working temperature under electromagnetic interference to obtain touch working data;
Classifying the touch working data according to different temperatures and different accumulated storage times to obtain classification results;
and obtaining a mapping environment calibration value corresponding to the classification result from a preset database, and generating a touch environment detection calibration value according to the mapping environment calibration value.
5. The electromagnetic interference false touch prevention method as claimed in any one of claims 1 to 4, wherein said determining that the current touch is a normal trigger or false trigger according to the number of keys, the key value variation parameter and the key value calibration value comprises:
acquiring a current touch environment, a current touch state and a current touch action, and determining a current key value calibration value from key value calibration values according to the current touch environment, the current touch state and the current touch action;
when the number of keys is multiple, the number of changed keys corresponding to the key value change parameter is greater than a preset number or the key value change parameter is not greater than the current key value calibration value, judging that the current touch is false trigger;
when the number of keys is a plurality of, and the number of changed keys corresponding to the key value change parameter is not greater than the preset number and the key value change parameter is greater than the current key value calibration value, judging that the current touch is normally triggered;
And when the number of keys is one, acquiring an upper-layer key value change parameter of an upper-layer sensor and a lower-layer key value change parameter of a lower-layer sensor of the touch key, and judging that the current touch is normally triggered when the upper-layer key value change parameter or the lower-layer key value change parameter is larger than the current key value calibration value.
6. An electromagnetic interference anti-false touch device, characterized in that the electromagnetic interference anti-false touch device comprises:
the calibration value acquisition module is used for simulating the use scene of the touch key under electromagnetic interference to acquire a key value calibration value;
the detection module is used for acquiring the number of keys of the touch keys in the vehicle, detecting the key value change of the corresponding key capacitor of the touch keys and acquiring key value change parameters;
the judging module is used for judging whether the current touch is normal trigger or false trigger according to the key number, the key value change parameter and the key value calibration value;
the calibration value acquisition module is also used for touching the same key of the same display screen by using different touch actions under electromagnetic interference to obtain touch original data, and generating a corresponding touch action detection calibration value according to the touch original data; touching different keys of different display screens with the same touch force under electromagnetic interference to obtain touch state data, and generating corresponding touch state detection calibration values according to the touch state data; touching the same key of the same display screen at a preset working temperature under electromagnetic interference to obtain touch working data, and generating a corresponding touch environment detection calibration value according to the touch working data; generating a key value calibration value according to the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value;
The calibration value obtaining module is further configured to generate different key value judgment thresholds corresponding to different touch actions under different touch environments and different touch states according to the touch action detection calibration value, the touch state detection calibration value and the touch environment detection calibration value, and use each key value judgment threshold as a key value calibration value.
7. An electromagnetic interference false touch prevention device, comprising: a memory, a processor and an electromagnetic interference false touch prevention program stored on the memory and executable on the processor, the electromagnetic interference false touch prevention program configured to implement the steps of the electromagnetic interference false touch prevention method of any one of claims 1 to 5.
8. A storage medium, wherein an electromagnetic interference false touch prevention program is stored on the storage medium, and the electromagnetic interference false touch prevention program realizes the steps of the electromagnetic interference false touch prevention method according to any one of claims 1 to 5 when executed by a processor.
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