CN116225264A - Signal interference noise removing system based on touch screen sensor - Google Patents
Signal interference noise removing system based on touch screen sensor Download PDFInfo
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- CN116225264A CN116225264A CN202310249553.XA CN202310249553A CN116225264A CN 116225264 A CN116225264 A CN 116225264A CN 202310249553 A CN202310249553 A CN 202310249553A CN 116225264 A CN116225264 A CN 116225264A
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
- G06F3/04182—Filtering of noise external to the device and not generated by digitiser components
Abstract
The invention discloses a signal interference noise removing system based on a touch screen sensor, which relates to the technical field of signal interference prevention, and solves the technical problems that a large number of other power modules exist in an instrument, interference current is easy to generate, so that the touch sensor is abnormal in the touch process, meanwhile, in the subsequent analysis process, the reason caused by interference noise cannot be analyzed, the subsequent investigation difficulty is high, the maximum value between a current diagram to be analyzed and a current waveform diagram is subjected to difference analysis, whether the interference noise influences touch operation or not is judged, whether a removing signal is needed to be timely removed, the current waveform diagram and the current diagram to be analyzed are subjected to re-analysis, current difference values under different touch pressure states are obtained, corresponding adjustment data packets are generated, current data adjustment is performed when the current difference values are performed next time, noise interference removal is performed when the current difference values are used for the group are used for next time of touch, and the overall interference noise removing effect can be improved.
Description
Technical Field
The invention belongs to the technical field of signal anti-interference, and particularly relates to a signal interference noise removal system based on a touch screen sensor.
Background
The sensor is a detection device which can sense the measured information and convert the sensed information into an electric signal or other information output in a required form according to a certain rule so as to meet the requirements of information transmission, processing, storage, display, recording, control and the like.
In the touch sensing process of the touch screen, an adaptive sensor is required to be adopted for adapting, but in the normal use process of the corresponding touch sensor, because a large number of other power modules exist in the instrument, interference current is easy to generate, so that the touch sensor is abnormal in the touch process, meanwhile, in the subsequent analysis process, the reason generated by interference noise cannot be analyzed, and the subsequent investigation difficulty is high.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art; therefore, the invention provides a signal interference noise removing system based on a touch screen sensor, which is used for solving the technical problems that interference current is easy to generate due to the fact that a large number of other power modules exist in an instrument, so that the touch sensor is abnormal in the touch process, and meanwhile, the reasons generated by interference noise cannot be analyzed in the subsequent analysis process, so that the subsequent investigation difficulty is high.
To achieve the above object, an embodiment according to a first aspect of the present invention provides a signal interference noise removal system based on a touch screen sensor, including a pre-test unit, a data acquisition end, a noise management center, and a display terminal;
the noise management center comprises an induced current waveform diagram generating unit, a storage unit, a waveform diagram analyzing unit, a noise removing unit, a trend analyzing unit, a signal generating unit and a guiding parameter analyzing unit;
the pre-test unit is used for pre-isolating external current interference parameters, pre-testing the touch sensor and transmitting the testing parameters into the noise management center;
the induction current waveform diagram generating unit receives the test parameters and draws a current waveform diagram in a normal state according to the test parameters, and the specific mode is as follows:
extracting touch pressure parameters and corresponding touch current parameters from the test parameters, establishing a current waveform diagram by taking the touch pressure parameters as horizontal coordinates and the touch current parameters as vertical coordinates, and transmitting the established current waveform diagram into a storage unit for storage;
the storage unit is used for receiving and storing the current waveform diagram established by the induced current waveform diagram generation unit and providing the stored current waveform diagram into the waveform diagram analysis unit;
the data acquisition end is used for acquiring real-time touch parameters generated by the touch sensor in a normal use state, transmitting the acquired multiple groups of touch parameters into the induction current waveform diagram generation unit, and generating a corresponding current diagram to be analyzed by the induction current waveform diagram generation unit according to the acquired real-time touch parameters;
the waveform diagram analysis unit is used for receiving the to-be-analyzed current diagram, analyzing and comparing the to-be-analyzed current diagram with the stored current waveform diagram, generating a removal signal according to the analysis and comparison result, and determining whether the monitored touch sensor needs to be subjected to noise removal or not, wherein the specific mode is as follows:
extracting a current waveform diagram from a storage unit, receiving the current diagram to be analyzed at the same time, extracting a maximum value and a minimum value from the current waveform diagram and the current diagram to be analyzed respectively, marking the maximum value of the current waveform diagram as ZDmax, marking the minimum value as ZDmin, marking the maximum value in the current diagram to be analyzed as FXmax, and marking the minimum value as FXmin;
by using
Obtaining two groups of difference values B1 and B2 to be analyzed, and combining the two groups of difference values B1 and B2 to be analyzed into a difference value interval through the numerical value;
comparing the difference interval with a preset interval, wherein the end values of the preset interval are preset values, if the difference interval belongs to the preset interval, not performing any processing, otherwise, generating a removal signal and a trend analysis signal, transmitting the removal signal into a noise removal unit, and transmitting the trend analysis signal into a trend analysis unit;
the noise removing unit receives the removing signal sent by the waveform diagram analyzing unit, re-analyzes the current waveform diagram and the current diagram to be analyzed, obtains current difference values under different touch pressure states, generates corresponding adjustment data packets, and adjusts the current data when touching next time, and the specific mode is as follows:
taking the current waveform diagram as a calibration template, acquiring current difference values under different touch pressure states, wherein the current difference value = current waveform diagram Y-axis parameter-to-be-analyzed current diagram Y-axis parameter, when the current difference value is a positive value, the corresponding current parameter is required to be improved, and when the current difference value is a negative value, the corresponding current parameter is required to be reduced;
binding the corresponding touch pressure parameter and the corresponding current difference value, and generating a plurality of groups of binding data into an adjustment data packet;
according to the adjustment data packet, directly summing the original current parameter and the current difference value when touching next time to obtain an adjusted current value, and taking the current value as a working parameter to perform noise reduction treatment on the touch sensor in a working state;
the trend analysis unit is used for receiving trend analysis signals, acquiring corresponding current waveform diagrams and current diagrams to be analyzed, and carrying out different modes of processing according to trend analysis results, wherein the specific modes are as follows:
according to the received current waveform diagram, the rising or falling trend of different stages is confirmed, the rising trend is marked as '1', the falling trend is marked as '0', and the trend code belonging to the current waveform diagram is obtained;
and carrying out trend analysis on the current diagram to be analyzed to obtain trend codes belonging to the current diagram to be analyzed, comparing the two sets of trend codes, generating a parameter analysis signal when the two sets of trend codes are consistent, transmitting the parameter analysis signal into a guiding parameter analysis unit, generating a noise interference abnormal signal through a signal generation unit when the two sets of trend codes are inconsistent, and transmitting the noise interference abnormal signal into a display terminal.
Further, the guiding parameter analysis unit receives the parameter analysis signal, simultaneously carries out guiding parameter analysis on the current waveform diagram and the current diagram to be analyzed, judges the noise interference reason according to the analysis result, and transmits the judged noise interference signal to the display terminal for display, and the specific mode is as follows:
obtaining the maximum value of the current parameter in the current waveform diagram according to the current waveform diagram, and marking the maximum value as CSmax;
obtaining the maximum value of the current parameter in the current diagram to be analyzed according to the current diagram to be analyzed, and marking the maximum value as DLmax;
obtaining a check value HD by adopting DLmax-CSmax=HD, generating an electromagnetic mutual inductance interference signal when HD is more than 0, generating a leakage interference signal when HD is less than 0, and generating no signal when HD=0;
and transmitting the generated noise interference signal to a display terminal for display, so that an external person can check the noise interference signal.
Compared with the prior art, the invention has the beneficial effects that: carrying out difference analysis on the maximum value between the current diagram to be analyzed and the current waveform diagram, judging whether interference noise affects touch operation or not according to analysis results, generating a removal signal, carrying out re-analysis on the current waveform diagram and the current diagram to be analyzed, obtaining current difference values under different touch pressure states, generating corresponding adjustment data packets, carrying out current data adjustment on the next touch, carrying out noise interference removal on the next touch by using the analyzed current difference values, and improving the overall interference noise removal effect;
and then analyzing the overall trend of the current diagram and the current waveform diagram to be analyzed, judging whether the corresponding noise interference is normal interference, if so, carrying out maximum value difference analysis, judging whether the current value rises or falls after the noise interference is received, generating corresponding judging signals according to the change parameters of the current value, displaying the judging signals, checking by external personnel, timely making countermeasures, and improving the use effect of the whole system.
Drawings
Fig. 1 is a schematic diagram of a principle frame of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the application provides a signal interference noise removal system based on a touch screen sensor, which comprises a pre-test unit, a data acquisition end, a noise management center and a display terminal;
the pre-test unit and the data acquisition end are electrically connected with the input end of the noise management center, and the noise management center is electrically connected with the input end of the display terminal;
the noise management center comprises an induction current waveform diagram generating unit, a storage unit, a waveform diagram analyzing unit, a noise removing unit, a trend analyzing unit, a signal generating unit and a guiding parameter analyzing unit, wherein the induction current waveform diagram generating unit is electrically connected with the storage unit and the input end of the waveform diagram analyzing unit, the storage unit is electrically connected with the input end of the waveform diagram analyzing unit, the waveform diagram analyzing unit is electrically connected with the input ends of the noise removing unit and the trend analyzing unit respectively, and the trend analyzing unit is electrically connected with the input ends of the guiding parameter analyzing unit and the signal generating unit;
the pre-test unit is used for pre-isolating external current interference parameters, pre-testing the touch sensor and transmitting the testing parameters into the noise management center;
the induction current waveform diagram generating unit in the noise management center receives the test parameters and draws a current waveform diagram in a normal state according to the test parameters, wherein the specific way of drawing is as follows:
and extracting touch pressure parameters and corresponding touch current parameters from the test parameters, establishing a current waveform diagram by taking the touch pressure parameters as horizontal coordinates and the touch current parameters as vertical coordinates, and transmitting the established current waveform diagram into a storage unit for storage.
The storage unit receives and stores the current waveform pattern established by the induced current waveform pattern generation unit and provides the stored current waveform pattern to the waveform pattern analysis unit.
The data acquisition end is used for acquiring real-time touch parameters generated by the touch sensor in a normal use state, transmitting the acquired multiple groups of touch parameters into the induction current waveform chart generating unit, generating a corresponding current chart to be analyzed according to the acquired real-time touch parameters by the induction current waveform chart generating unit, and transmitting the current chart to be analyzed into the waveform chart analyzing unit;
the waveform diagram analysis unit is used for receiving the to-be-analyzed current diagram, analyzing and comparing the to-be-analyzed current diagram with the stored current waveform diagram, and determining whether the monitored touch sensor needs to be subjected to noise removal according to the analysis and comparison result, wherein the specific mode of comparing is as follows:
extracting a current waveform diagram from a storage unit, receiving the current diagram to be analyzed at the same time, extracting a maximum value and a minimum value from the current waveform diagram and the current diagram to be analyzed respectively, marking the maximum value of the current waveform diagram as ZDmax, marking the minimum value as ZDmin, marking the maximum value in the current diagram to be analyzed as FXmax, and marking the minimum value as FXmin;
by using
Obtaining two groups of difference values B1 and B2 to be analyzed, and combining the two groups of difference values B1 and B2 to be analyzed into a difference value interval through the numerical value;
comparing the difference interval with a preset interval, wherein the end values of the preset interval are preset values, the specific values are determined by an operator according to experience, if the difference interval belongs to the preset interval, no processing is performed, otherwise, a removal signal and a trend analysis signal are generated, the removal signal is transmitted to a noise removal unit, and the trend analysis signal is transmitted to a trend analysis unit.
Combining with practical application scene analysis, wherein the maximum value of the current waveform diagram is 55, the minimum value is 35, the maximum value of the current diagram to be analyzed is 40, and the minimum value is 15;
wherein 55-40=15 and 35-15=20 are adopted to obtain a difference interval 15-20;
and extracting preset intervals 10-19, wherein the difference interval does not belong to the preset interval, then the next processing is needed to remove the current interference noise, the reason for generating the noise interference is judged through analysis trend, and corresponding signals are generated for external personnel to check and analyze.
The noise removing unit is used for receiving the removing signal sent by the waveform diagram analyzing unit, re-analyzing the current waveform diagram and the current diagram to be analyzed, obtaining current difference values under different touch pressure states, generating corresponding adjustment data packets, and adjusting the current data when touching next time, wherein the specific mode for re-analyzing is as follows:
taking the current waveform diagram as a calibration template, acquiring current difference values under different touch pressure states, wherein the current difference value = current waveform diagram Y-axis parameter-to-be-analyzed current diagram Y-axis parameter, when the current difference value is a positive value, the corresponding current parameter is required to be improved, and when the current difference value is a negative value, the corresponding current parameter is required to be reduced;
binding the corresponding touch pressure parameter and the corresponding current difference value, and generating a plurality of groups of binding data into an adjustment data packet;
according to the adjustment data packet, when touching next time, the original current parameter and the current difference value are directly summed to obtain an adjusted current value, the current value is used as a working parameter, the touch sensor in the working state is subjected to noise reduction treatment (the parameter difference value in the last working is used as the adjustment parameter in the normal working of this time, the touch sensor in the working of this time is subjected to noise reduction through the parameter of the last time, and the overall noise reduction effect of the touch sensor is improved).
Recording current parameters under different touch pressure states by combining with actual application scene analysis, and combining with a current waveform diagram and a current diagram to be analyzed, wherein a certain group of pressure parameters 5 are arranged in the current waveform diagram, and the corresponding current parameters are 15;
when the pressure parameter of the current graph to be analyzed is 5, the generated current parameter is 17;
so the current difference value=15-17= -2, the pressure parameter 5 and the current difference value-2 are bound to generate an adjustment data packet;
in the next touch process, when the pressure parameter reaches 5, the generated induced current parameter is directly subjected to current reduction 2, so that interference of current interference noise is reduced, the current difference value analyzed by the group is used for removing noise interference in the next touch, and the overall interference noise removing effect can be improved.
The trend analysis unit is used for receiving trend analysis signals, acquiring a corresponding current waveform diagram and a current diagram to be analyzed, and carrying out different modes of processing according to trend analysis results, wherein the specific modes of trend analysis are as follows:
according to the received current waveform diagram, the rising or falling trend of different stages is confirmed, the rising trend is marked as '1', the falling trend is marked as '0', and the trend code belonging to the current waveform diagram is obtained;
and then carrying out trend analysis on the current diagram to be analyzed to obtain trend codes belonging to the current diagram to be analyzed, comparing the two groups of trend codes, generating parameter analysis signals when the two groups of trend codes are consistent, transmitting the parameter analysis signals into a guiding parameter analysis unit, generating noise interference abnormal signals through a signal generation unit when the two groups of trend codes are inconsistent, transmitting the noise interference abnormal signals into a display terminal, checking by external operators, and timely making corresponding countermeasures.
Combining with the analysis of the actual application scene, the overall trend of the current waveform diagram is ascending, descending, ascending, descending and descending, and then the trend code at the moment is 10100;
the overall trend of the current graph to be analyzed is up, down and up, then the trend code at this time is 101001;
the trend codes are inconsistent at the moment, and noise interference abnormal signals are generated;
when the final ascending trend does not exist, the trend codes of the current graph to be analyzed are consistent, so that a parameter analysis signal is generated.
The guiding parameter analysis unit is used for receiving the parameter analysis signals, simultaneously carrying out guiding parameter analysis on the current waveform diagram and the current diagram to be analyzed, judging the noise interference reason according to the analysis result, transmitting the judged noise interference signals into the display terminal for display, and checking by external personnel, wherein the specific mode for carrying out the guiding parameter analysis is as follows:
obtaining the maximum value of the current parameter in the current waveform diagram according to the current waveform diagram, and marking the maximum value as CSmax;
obtaining the maximum value of the current parameter in the current diagram to be analyzed according to the current diagram to be analyzed, and marking the maximum value as DLmax;
obtaining a check value HD by adopting DLmax-CSmax=HD, generating an electromagnetic mutual inductance interference signal when HD is more than 0, generating a leakage interference signal when HD is less than 0, and generating no signal when HD=0;
and transmitting the generated noise interference signal to a display terminal for display, so that an external person can check the noise interference signal.
Combining with the analysis of the actual application scene, the maximum value of the current parameter of the current waveform diagram is 55;
the maximum value of the current diagram to be analyzed is 40;
at this time, the check value=40-55= -15, and the check value-15 is negative, so that a leakage interference signal is generated, and the leakage interference signal is transmitted to an external display terminal for external personnel to check and timely take countermeasures.
The partial data in the formula are all obtained by removing dimension and taking the numerical value for calculation, and the formula is a formula closest to the real situation obtained by simulating a large amount of collected data through software; the preset parameters and the preset threshold values in the formula are set by those skilled in the art according to actual conditions or are obtained through mass data simulation.
The working principle of the invention is as follows: the method comprises the steps of testing the touch sensor in advance, enabling the touch sensor to be in an optimal working environment and not affected by external current interference, determining a group of optimal current waveform diagrams, recording parameters generated by the touch sensor in the touch process, and generating a current diagram to be analyzed;
firstly, carrying out difference analysis on the maximum value between a current diagram to be analyzed and a current waveform diagram, judging whether interference noise affects touch operation or not according to analysis results, generating removal signals, carrying out re-analysis on the current waveform diagram and the current diagram to be analyzed, obtaining current difference values under different touch pressure states, generating corresponding adjustment data packets, carrying out current data adjustment on the next touch, carrying out noise interference removal on the next touch according to the analyzed current difference values, and improving the overall interference noise removal effect;
and then analyzing the overall trend of the current diagram and the current waveform diagram to be analyzed, judging whether the corresponding noise interference is normal interference, if so, carrying out maximum value difference analysis, judging whether the current value rises or falls after the noise interference is received, generating corresponding judging signals according to the change parameters of the current value, displaying the judging signals, checking by external personnel, timely making countermeasures, and improving the use effect of the whole system.
The above embodiments are only for illustrating the technical method of the present invention and not for limiting the same, and it should be understood by those skilled in the art that the technical method of the present invention may be modified or substituted without departing from the spirit and scope of the technical method of the present invention.
Claims (6)
1. The signal interference noise removing system based on the touch screen sensor is characterized by comprising a pre-test unit, a data acquisition end, a noise management center and a display terminal;
the noise management center comprises an induced current waveform diagram generating unit, a storage unit, a waveform diagram analyzing unit, a noise removing unit, a trend analyzing unit, a signal generating unit and a guiding parameter analyzing unit;
the pre-test unit is used for pre-isolating external current interference parameters, pre-testing the touch sensor and transmitting the testing parameters into the noise management center;
the induction current waveform diagram generating unit receives the test parameters and draws a current waveform diagram in a normal state according to the test parameters;
the storage unit is used for receiving and storing the current waveform diagram established by the induced current waveform diagram generation unit and providing the stored current waveform diagram into the waveform diagram analysis unit;
the data acquisition end is used for acquiring real-time touch parameters generated by the touch sensor in a normal use state, transmitting the acquired multiple groups of touch parameters into the induction current waveform diagram generation unit, and generating a corresponding current diagram to be analyzed by the induction current waveform diagram generation unit according to the acquired real-time touch parameters;
the waveform diagram analysis unit is used for receiving the current diagram to be analyzed, analyzing and comparing the current diagram to be analyzed with the stored current waveform diagram, generating a removal signal according to the analysis and comparison result, and confirming whether the monitored touch sensor needs to be subjected to noise removal or not;
the noise removing unit is used for receiving the removing signal sent by the waveform diagram analyzing unit, re-analyzing the current waveform diagram and the current diagram to be analyzed, obtaining current difference values under different touch pressure states, generating corresponding adjustment data packets and adjusting the current data when touching next time;
the trend analysis unit is used for receiving the trend analysis signals, acquiring corresponding current waveform diagrams and current diagrams to be analyzed, and carrying out different modes of processing according to trend analysis results.
2. The system for removing signal interference noise based on a touch screen sensor according to claim 1, wherein the induced current waveform diagram generating unit draws the current waveform diagram in the normal state in the following specific manner:
and extracting touch pressure parameters and corresponding touch current parameters from the test parameters, establishing a current waveform diagram by taking the touch pressure parameters as horizontal coordinates and the touch current parameters as vertical coordinates, and transmitting the established current waveform diagram into a storage unit for storage.
3. The touch screen sensor-based signal interference noise removal system according to claim 2, wherein the waveform diagram analysis unit performs analysis and comparison of a current diagram to be analyzed and a stored current waveform diagram in the following specific manner:
extracting a current waveform diagram from a storage unit, receiving the current diagram to be analyzed at the same time, extracting a maximum value and a minimum value from the current waveform diagram and the current diagram to be analyzed respectively, marking the maximum value of the current waveform diagram as ZDmax, marking the minimum value as ZDmin, marking the maximum value in the current diagram to be analyzed as FXmax, and marking the minimum value as FXmin;
by using
Obtaining two groups of difference values B1 and B2 to be analyzed, and combining the two groups of difference values B1 and B2 to be analyzed into a difference value interval through the numerical value;
comparing the difference interval with a preset interval, wherein the end values of the preset interval are preset values, if the difference interval belongs to the preset interval, not performing any processing, otherwise, generating a removal signal and a trend analysis signal, transmitting the removal signal into a noise removal unit, and transmitting the trend analysis signal into a trend analysis unit.
4. The touch screen sensor-based signal interference noise removal system according to claim 3, wherein the noise removal unit re-analyzes the current waveform diagram and the current diagram to be analyzed in the following specific manner:
taking the current waveform diagram as a calibration template, acquiring current difference values under different touch pressure states, wherein the current difference value = current waveform diagram Y-axis parameter-to-be-analyzed current diagram Y-axis parameter, when the current difference value is a positive value, the corresponding current parameter is required to be improved, and when the current difference value is a negative value, the corresponding current parameter is required to be reduced;
binding the corresponding touch pressure parameter and the corresponding current difference value, and generating a plurality of groups of binding data into an adjustment data packet;
according to the adjustment data packet, when touching next time, the original current parameter and the current difference value are directly summed to obtain an adjusted current value, and the current value is used as a working parameter to perform noise reduction treatment on the touch sensor in a working state.
5. The touch screen sensor-based signal interference noise removal system according to claim 3, wherein the trend analysis unit performs trend analysis on the current waveform diagram and the current diagram to be analyzed in the following specific manner:
according to the received current waveform diagram, the rising or falling trend of different stages is confirmed, the rising trend is marked as '1', the falling trend is marked as '0', and the trend code belonging to the current waveform diagram is obtained;
and carrying out trend analysis on the current diagram to be analyzed to obtain trend codes belonging to the current diagram to be analyzed, comparing the two sets of trend codes, generating a parameter analysis signal when the two sets of trend codes are consistent, transmitting the parameter analysis signal into a guiding parameter analysis unit, generating a noise interference abnormal signal through a signal generation unit when the two sets of trend codes are inconsistent, and transmitting the noise interference abnormal signal into a display terminal.
6. The touch screen sensor-based signal interference noise removal system according to claim 5, wherein the guiding parameter analysis unit receives the parameter analysis signal, simultaneously performs guiding parameter analysis on the current waveform diagram and the current diagram to be analyzed, determines a noise interference cause according to an analysis result, and transmits the determined noise interference signal to the display terminal for display, and the specific manner is as follows:
obtaining the maximum value of the current parameter in the current waveform diagram according to the current waveform diagram, and marking the maximum value as CSmax;
obtaining the maximum value of the current parameter in the current diagram to be analyzed according to the current diagram to be analyzed, and marking the maximum value as DLmax;
obtaining a check value HD by adopting DLmax-CSmax=HD, generating an electromagnetic mutual inductance interference signal when HD is more than 0, generating a leakage interference signal when HD is less than 0, and generating no signal when HD=0;
and transmitting the generated noise interference signal to a display terminal for display, so that an external person can check the noise interference signal.
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| CN117111777A (en) * | 2023-10-23 | 2023-11-24 | 深圳市联智光电科技有限公司 | LED touch display screen with high sensitivity |
| CN117111777B (en) * | 2023-10-23 | 2024-01-23 | 深圳市联智光电科技有限公司 | LED touch display screen with high sensitivity |
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