CN108334214B - Detection method and system of touch device - Google Patents
Detection method and system of touch device Download PDFInfo
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- CN108334214B CN108334214B CN201710043201.3A CN201710043201A CN108334214B CN 108334214 B CN108334214 B CN 108334214B CN 201710043201 A CN201710043201 A CN 201710043201A CN 108334214 B CN108334214 B CN 108334214B
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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
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Abstract
The invention provides a detection method and a detection system of a touch device. The signal generator outputs a test signal to the power supply device, and when the power supply device supplies power with the test signal to the touch device, a line drawing track generated by drawing a line on the touch device by the automatic line drawing device is collected. And then, judging whether the test signal passes a frequency interference test or not based on the line drawing track.
Description
Technical Field
The present invention relates to a mechanism for detecting an interference signal source, and more particularly, to a method and a system for detecting a touch device.
Background
Generally, a touch device has two or more operating frequencies to achieve an automatic frequency hopping mechanism. The purpose of the mechanism is to avoid the power noise from interfering with the operating frequency of the touch device, thereby disabling the touch device. Therefore, when noise interferes with the touch device, the mechanism is automatically started, so that the touch device works normally.
However, if the touch device is to detect whether the mechanism is provided, the touch device needs to be manually operated repeatedly, and the interference signal source needs to be switched until the interference frequency is found and the working frequency of the touch device is confirmed to be automatically switched. For example, the signal generator simulates various interference signal sources with different waveforms, voltages and frequencies, and inputs the interference signal sources to the power supply socket of the touch device.
The frequency is continuously switched and the touch device is operated by the tester to find the frequency band of the interference source. However, because the frequency bands are wide, the manual tester can only scan one by one with a large frequency interval, and thus cannot scan all the frequency bands carefully, so that a part of the working frequency may not be found, and much time may be wasted.
Disclosure of Invention
The invention provides a detection method and a detection system of a touch device, which can detect whether an Integrated Circuit (IC) in the touch device has an automatic frequency hopping mechanism or not and further discover all working frequencies of the IC.
The detection method of the touch device comprises the following steps: outputting a test signal to the power supply device through the signal generator; under the condition that the power supply device supplies power with a test signal to the touch device, collecting a line drawing track generated by drawing a line on the touch device by the automatic line drawing device; and judging whether the test signal passes the frequency interference test or not based on the line drawing track.
In an embodiment of the present invention, the detecting method further includes: the main control device is used to control the signal generator and the automatic line drawing device to synchronously operate. Namely, the master control device transmits a signal generation command to the signal generator based on the sweep frequency interval, so that the signal generator outputs a test signal to the power supply device; and the main control device transmits the line drawing control command to the automatic line drawing device, so that the automatic line drawing device draws lines on the touch device under the condition that the power supply device supplies power with the test signal to the touch device.
In an embodiment of the present invention, the detecting method further includes: transmitting a first notification to a main control device through a touch device; after receiving the first notification, the master control device transmits a signal generation command to the signal generator based on the sweep frequency spacing, so that the signal generator outputs a corresponding test signal based on the received signal generation command; after the touch device confirms that the power with the test signal is received from the power supply device, transmitting a second notification to the main control device; and after receiving the second notification, the main control device transmits a line drawing control command to the automatic line drawing device, so that the automatic line drawing device draws a line on the touch device in a state that the power supply device supplies power with the test signal to the touch device.
In an embodiment of the invention, in the step of transmitting the signal generation command to the signal generator based on the sweep interval so that the signal generator outputs the test signal to the power supply device, the master control device may further control the signal generator to set at least one of a waveform, a frequency and an amplitude of the test signal.
In an embodiment of the present invention, after collecting a drawing track generated by drawing a line on a touch device by an automatic line drawing device, the method further includes: recording a line drawing track; and clearing the drawn line track displayed on the touch device.
In an embodiment of the present invention, the step of determining whether the test signal passes the frequency interference test based on the scribe line trajectory includes: obtaining coordinate information of a plurality of points based on the drawing track; judging whether the point coordinate information meets the predefined standard or not; if the point coordinate information meets the predefined standard, it is determined that the test signal is not the operating frequency of the touch IC in the touch device, and the touch device is not affected (i.e., the frequency interference test is passed); and if the point coordinate information does not meet the predefined standard, determining that the test signal is the operating frequency of the touch IC in the touch device, which will affect the touch device (i.e., fail the frequency interference test).
In an embodiment of the present invention, after determining whether the test signal passes the frequency interference test based on the scribe line trajectory, a result of the frequency interference test is recorded.
The detection system of the touch device of the invention comprises: the device comprises a touch device, a power supply device, an automatic line drawing device, a signal generator and a main control device. The power supply device is used for supplying power to the touch device. The automatic line drawing device is used for drawing lines on the touch device. The signal generator is coupled to the power supply device and outputs a test signal to the power supply device. The main control device is coupled to the touch device, the automatic line drawing device and the signal generator, and controls the signal generator and the automatic line drawing device to synchronously operate. The main control device drives the signal generator to output a test signal to the power supply device, and drives the automatic line drawing device, so that the automatic line drawing device draws lines on the touch device under the condition that the power supply device supplies power with the test signal to the touch device. The touch device collects line drawing tracks generated by the automatic line drawing device and judges whether the test signals pass a frequency interference test or not based on the line drawing tracks.
Based on the above, the main control device is used for simultaneously controlling the signal generator and the automatic line drawing device, and the sweep frequency interval is set according to the actual requirement so as to automatically switch a plurality of test signals. Therefore, various test signals can be set as interference signal sources to more accurately find the interference frequency, so that the labor cost is further saved, and the result can be automatically generated.
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 is a schematic diagram of a detection system of a touch device according to an embodiment of the invention;
FIG. 2 is a block diagram of a detection system of a touch device according to an embodiment of the invention;
FIG. 3 is a flowchart illustrating a detection method of a touch device according to an embodiment of the invention;
fig. 4A and 4B are schematic diagrams of a scribe line trajectory according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a detection method of a touch device according to another embodiment of the invention.
Description of the reference numerals
100: a detection system;
110: a master control device;
111. 141: a processor;
112. 142: a storage device;
113: a signal generator control module;
114: the automatic line drawing device control module;
120: a signal generator;
130: an automatic line drawing device;
140: a touch device;
143: a main program;
150: a power supply device;
d1: a distance;
d2: a maximum distance;
d3: a minimum distance;
s305 to S315: detecting a touch device;
s510 to S545: the detection method of the touch device comprises the following steps.
Detailed Description
Fig. 1 is a schematic diagram of a detection system of a touch device according to an embodiment of the invention. The detection system 100 includes a main control device 110, a signal generator 120, an automatic line drawing device 130, a touch device 140, and a power supply device 150. Here, the main control device 110 is coupled to the signal generator 120, the automatic line drawing device 130 and the touch device 140. The signal generator 120 is coupled to the power supply device 150.
For example, the host 110 is connected to the signal generator 120 via a Universal Serial Bus (USB) and connected to the automatic line drawing apparatus 130 via an RS232 interface. The touch device 140 is connected to the main control device 110 by a wired or wireless transmission method using, for example, a Remote Desktop Protocol (RDP). The signal output terminal of the signal generator 120 is coupled to the power supply socket of the power supply device 150, so that the test signal generated by the signal generator 120 is used as the interference signal source. The power supply device 150 is coupled to the power input terminal of the touch device 140 to supply power with the test signal to the touch device 140.
The main control device 110 is an electronic device with an operation function, such as a desktop computer, a notebook computer, a tablet computer, etc., and is used for controlling the signal generator 120 and the automatic line drawing device 130, so that the two devices can operate synchronously. The signal generator 120 is used for generating test signals with various waveforms, voltages and frequencies, and supplying the test signals to the power supply device 150. The automatic line drawing device 130 is, for example, a two-finger touch line drawing device, and is used for drawing a line on the touch device 140. In other embodiments, the automatic line drawing device 130 may be a single-finger or multi-finger touch line drawing device.
The touch device 140 is an electronic device having a touch IC. The touch IC may be a capacitive type, a resistive type, an infrared type or a sound wave type, and is used for receiving an input signal such as a contact (including a finger or a stylus head).
The detection system 100 utilizes the main control device 110 to control the signal generator 120 and the automatic line drawing device 130 simultaneously, and stores all the related line drawing tracks and the point coordinate information generated by touch control, so as to determine whether the corresponding test signal generates interference from the point coordinate information.
The main control device 110 is provided with a driver and an application (signal generator control module) of the signal generator 120 in addition to control software (automatic line drawing device control module) of the automatic line drawing device 130, so that the signal generator 120 can be controlled (for example, connected by USB) and generate various test signals. The touch device 140 is connected to the host device 110 by using RDP, and controls the host device 110. The main program is installed on the touch device 140 to achieve the control of the whole detection system 100. An embodiment will be described below.
Fig. 2 is a block diagram of a detection system of a touch device according to an embodiment of the invention. Referring to fig. 2, the master control device 110 includes a processor 111 and a storage device 112. The memory device 112 stores a driver and signal generator control module 113 corresponding to the signal generator 120 and a driver and automatic line striping apparatus control module 114 corresponding to the automatic line striping apparatus 130. The signal generator control module 113 and the automatic line striping apparatus control module 114 are executed by the processor 111.
The touch device 140 includes a processor 141 and a storage device 142. The storage device 142 stores therein a main program 143. The processor 141 executes the main program 143 to control the signal generator control module 113 and the automatic line striping apparatus control module 114. For example, the main program 143 sends a notification to the processor 111 of the main control device 110, so that the processor 111 drives the signal generator control module 113 and the automatic line drawing device control module 114.
The processors 111, 141 are, for example, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), a Physical Processing Unit (PPU), a programmable Microprocessor (Microprocessor), an embedded control chip, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), or other similar devices.
The storage devices 112, 142 are, for example, any type of fixed or Random Access Memory (RAM), Read-Only Memory (ROM), Flash Memory (Flash Memory), hard disk, or other similar devices or combinations thereof.
The present embodiment is only one implementation of the detection system 100, and is not limited thereto. For example, in other embodiments, the main program 143 can also be set in the main control device 110, and the main control device 110 is connected to the touch device 140 through a network.
Fig. 3 is a flowchart of a detection method of a touch device according to an embodiment of the invention. Referring to fig. 1 and fig. 3, the present embodiment describes the operation of the touch device 140 itself. The touch device 140 controls the signal generator 120 and the automatic line drawing device 130 to operate synchronously by the main control device 110.
In step S305, the signal generator 120 outputs a test signal to the power supply device 150. In step S310, the object drawing trajectory generated by the automatic object drawing device 130 drawing the object on the touch device 140 is collected while the power supply device 150 supplies power having the test signal to the touch device 140. Specifically, the main control device 110 transmits a signal generating command and a line drawing control command to the signal generator 120 and the automatic line drawing device 130, respectively, so that the automatic line drawing device 130 draws a line on the touch device 140 in a state where the signal generator 120 outputs a test signal to the power supply device 150.
Next, in step S315, the touch device 140 determines whether the test signal passes the frequency interference test based on the drawn line track. For example, the touch device 140 obtains a plurality of point coordinate information (pop point information) based on the drawing line locus. Next, it is determined whether or not the point coordinate information meets a predefined criterion (criterion). If the point coordinate information meets the predefined criteria, the touch device 140 determines that the test signal passes the frequency interference test, which means that the test signal is not the operating frequency of the touch IC in the touch device 140, and the test signal does not affect the touch device 140. If the point coordinate information does not meet the predefined criteria, the touch device 140 determines that the test signal fails the frequency interference test, which means that the test signal is the operating frequency of the touch IC in the touch device 140, and the test signal will affect the touch device 140.
Fig. 4A and 4B are schematic diagrams of a scribe line trajectory according to an embodiment of the invention. In fig. 4A and 4B, the automatic line drawing device 130 is described as an example of a two-finger touch line drawing device.
Referring to fig. 4A, the touch device 140 collects two line segments drawn by the automatic line drawing device 130 as substantially parallel line segments, and the distance between the two line segments is D1. Then, the touch device 140 determines whether the distance D1 is within a predetermined range (i.e., a predefined standard). If the distance D1 is within the predetermined range (Ddown < D1< Dup), it is determined that the test signal currently received by the touch device 140 passes the frequency interference test. If the distance D1 is not within the predetermined range, it is determined that the test signal currently received by the touch device 140 fails the frequency interference test.
Referring to fig. 4B, if the touch device 140 collects that the two line segments drawn by the automatic line drawing device 130 are irregular curves, the maximum distance D2 and the minimum distance D3 between the two curves are extracted. Then, the touch device 140 determines whether the maximum distance D2 is within a predetermined range and whether the minimum distance D3 is also within the predetermined range. If the maximum distance D2 and the minimum distance D3 are both within the predetermined range, it is determined that the test signal currently received by the touch device 140 passes the frequency interference test. If the maximum distance D2 or the minimum distance D3 is not within the predetermined range, it is determined that the test signal currently received by the touch device 140 fails the frequency interference test.
In other embodiments, the touch device 140 may also transmit the point coordinate information (pop point information) obtained by performing touch line drawing by the automatic line drawing device 130 to the main control device 110 for calculation, which is not limited herein.
Fig. 5 is a flowchart illustrating a detection method of a touch device according to another embodiment of the invention. When the detection is started, the signal generator 120, the automatic line drawing device 130 and the touch device 140 are connected to the main control device 110.
Here, the master control device 110 is used to set the sweep interval, and transmit a signal generation command to the signal generator 120 based on the sweep interval. Specifically, the master device 110 sends a signal generation command to the signal generator 120 one at a time, so that the signal generator 120 outputs a corresponding test signal based on the signal generation command. The plurality of test signals output by the command are generated based on a plurality of different signals, and at least one of the waveforms, the frequencies and the amplitudes of the test signals are different.
In addition, in other embodiments, the sweep interval may also be set by the main program 143 of the touch device 140, and a notification is sent to the host 110, so that the host 110 outputs a corresponding signal generation command to the signal generator 120 based on the sweep interval.
The main control device 110 transmits a signal generating command and a line drawing control command to the signal generator 120 and the automatic line drawing device 130, respectively. After the signal generator 120 receives the signal generation command, in step S510, the signal generator 120 outputs a test signal to the power supply device 150. After receiving the line drawing control command, the automatic line drawing apparatus 130 draws a line on the touch device 140 while supplying power having a test signal to the touch device 140 in step S515.
Specifically, the first notification may be transmitted to the host device 110 through the touch device 140. After the master control device 110 receives the first notification, it transmits a signal generation command to the signal generator 120 based on the sweep interval, so that the signal generator 120 outputs a corresponding test signal based on the received signal generation command. The signal generation command includes setting parameters such as frequency, waveform, and amplitude. After the touch device 140 confirms that the power with the test signal is received, a second notification is transmitted to the host device 110. After receiving the second notification, the main control device 110 transmits a line drawing control command to the automatic line drawing device 130, so that the automatic line drawing device 130 draws a line on the touch device 140 in a state where the power supply device 150 supplies power with the test signal to the touch device 140.
Next, in step S520, the touch device 140 collects the drawn line trajectory. In step S525, the touch device 140 records the drawing line trajectory. Thereafter, in step S530, the touch device 140 obtains a result of the frequency interference test. The touch device 140 determines whether the test signal passes the frequency interference test based on the drawn line track. For example, the touch device 140 obtains coordinate information (pop point information) of a plurality of points based on the drawing line trajectory, and then determines whether the coordinate information of the points meets a predefined standard. Finally, in step S535, the results of the frequency interference test are recorded. In addition, after recording the drawing line trajectory, the processor 141 of the touch device 140 clears the drawing line trajectory displayed on the touch device 140. Thereafter, in step S540, it is determined whether the test signal has been tested. If yes, the detection flow is ended. If not, the touch device 140 notifies the main control device 110, so that the main control device 110 continues to transmit a signal generation command to the signal generator 120 based on the sweep interval, and transmits a line drawing control command to the automatic line drawing device 130.
And the final result of the frequency interference test can be obtained through steps S510 to S545, for example, as shown in table 1. From table 1, the operating frequencies of the touch device 140 are 100KHz and 150 KHz.
TABLE 1
In summary, the main control device is used to control the signal generator and the automatic line drawing device simultaneously, so as to automatically switch a plurality of test signals. The main control device can set the sweep frequency spacing and adjust the waveform and amplitude of the test signal according to the actual requirement, namely, the waveform, amplitude and frequency to be detected can be changed freely to set various test signals, thereby improving the use flexibility and shortening the test time. Therefore, the frequency interval is reduced, so that the interference frequency can be accurately measured, and the problem that the interference frequency cannot be accurately found due to the fact that the frequency range of manual testing is too large is avoided. In addition, whether the touch IC in the touch device has an automatic frequency hopping mechanism can be determined through the above embodiment. In addition, the self-animation line device can be modified into ten fingers, and ten-finger input measurement is achieved, which cannot be achieved by manual testing. The automatic detection can save labor cost and automatically generate results.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (13)
1. A detection method of a touch device is characterized by comprising the following steps:
utilizing a master control device to transmit a plurality of different signal generation commands to a signal generator, so that the signal generator generates a plurality of test signals to perform a plurality of tests, wherein each test comprises:
transmitting one signal generation command to the signal generator through the master control device based on the sweep frequency spacing, so that the signal generator outputs a corresponding test signal to the power supply device;
collecting a line drawing track generated by drawing a line on the touch device by an automatic line drawing device under the condition that the power supply device supplies power with the test signal to the touch device; and
and judging whether the test signal passes a frequency interference test or not based on the line drawing track.
2. The method for detecting a touch device according to claim 1, further comprising, in each of the tests:
and the main control device is utilized to respectively transmit the signal generation command and the line drawing control command to the signal generator and the automatic line drawing device so as to control the signal generator and the automatic line drawing device to synchronously operate.
3. The method for detecting the touch device according to claim 2, further comprising:
transmitting a first notification to the master control device through the touch device;
after the master control device receives the first notification, transmitting the signal generation command to the signal generator based on the sweep frequency spacing, so that the signal generator outputs the corresponding test signal based on the received signal generation command;
after the touch control device confirms that the power with the test signal is received from the power supply device, transmitting a second notification to the main control device; and
after receiving the second notification, the main control device transmits a line drawing control command to the automatic line drawing device, so that the power supply device supplies power with the test signal to the touch device, and the automatic line drawing device draws lines on the touch device.
4. The method as claimed in claim 2, wherein the step of sending a signal generation command to the signal generator based on the swept pitch so that the signal generator outputs a corresponding test signal to the power supply device further comprises:
controlling the signal generator by the master control device to set at least one of a waveform, a frequency, and an amplitude of the test signal.
5. The method for detecting the touch device according to claim 1, further comprising, after collecting the line drawing trajectory generated by the automatic line drawing device drawing a line on the touch device:
recording the line drawing track; and
and clearing the drawn line track displayed on the touch device.
6. The method for detecting the touch device according to claim 1, wherein the step of determining whether the test signal passes a frequency interference test based on the scribe line trajectory includes:
obtaining coordinate information of a plurality of points based on the drawing track;
judging whether the coordinate information of the plurality of points meets a predefined standard or not;
if the coordinate information of the plurality of points accords with the predefined standard, judging that the test signal passes the frequency interference test; and
and if the plurality of point coordinate information do not meet the predefined standard, judging that the test signal does not pass the frequency interference test.
7. The method for detecting the touch device according to claim 1, wherein after determining whether the test signal passes a frequency interference test based on the scribe line trajectory, the method further comprises:
and recording the result of the frequency interference test.
8. A detection system of a touch device, comprising:
a touch device;
the power supply device supplies power to the touch device;
the automatic line drawing device draws lines on the touch device;
a signal generator coupled to the power supply device; and
the main control device is coupled to the touch device, the automatic line drawing device and the signal generator and controls the signal generator and the automatic line drawing device to synchronously operate;
the master control device transmits a plurality of different signal generation commands to the signal generator, so that the signal generator generates a plurality of test signals to perform a plurality of tests, wherein each test comprises:
the master control device transmits one signal generation command to the signal generator based on the sweep frequency spacing, so that the signal generator outputs a corresponding test signal to the power supply device;
the main control device drives the automatic line drawing device, so that the automatic line drawing device draws lines on the touch device under the condition that the power supply device supplies power with the test signal to the touch device;
the touch device collects a line drawing track generated by the automatic line drawing device, and judges whether the test signal passes a frequency interference test or not based on the line drawing track.
9. The system for detecting the touch device according to claim 8, wherein the touch device records the line drawing trajectory after collecting the line drawing trajectory; and the touch device can clear the line drawing track displayed on the touch device.
10. The system for detecting a touch device according to claim 8, wherein the touch device acquires an image of the line drawing trajectory, acquires a plurality of point coordinate information from the image, and determines whether the plurality of point coordinate information satisfies a predefined standard; if the point coordinate information conforms to the predefined standard, the touch device judges that the test signal passes the frequency interference test; and if the plurality of point coordinate information does not meet the predefined standard, the touch device judges that the test signal does not pass the frequency interference test.
11. The system for detecting a touch device according to claim 8, wherein the touch device acquires an image of the line drawing trajectory and transmits the image to the main control device,
the main control device obtains a plurality of point coordinate information from the image, and the main control device judges whether the plurality of point coordinate information accords with a predefined standard; if the coordinate information of the plurality of points accords with the predefined standard, the main control device judges that the test signal passes the frequency interference test; and if the plurality of point coordinate information does not meet the predefined standard, the main control device judges that the test signal does not pass the frequency interference test.
12. The system for detecting a touch device as claimed in claim 8, wherein after the master device receives a first notification from the touch device, the master device transmits a signal generation command to the signal generator based on the sweep interval, so that the signal generator outputs a corresponding test signal based on the received signal generation command;
after the touch control device confirms that the power supply device receives the electric power with the test signal, a second notification is transmitted to the main control device, and after the main control device receives the second notification, a line drawing control command is transmitted to the automatic line drawing device, so that the automatic line drawing device draws a line on the touch control device in a state that the power supply device supplies the electric power with the test signal to the touch control device.
13. The system as claimed in claim 12, wherein the master device controls the signal generator to set at least one of a waveform, a frequency and an amplitude of the test signal.
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| WO2013038719A1 (en) * | 2011-09-14 | 2013-03-21 | シャープ株式会社 | Touch panel controller, touch panel system, and method for operating touch panel system |
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| US9847070B2 (en) * | 2014-10-22 | 2017-12-19 | Apple Inc. | Display with intraframe pause circuitry |
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| CN101185053A (en) * | 2005-03-31 | 2008-05-21 | 蒂科电子公司 | Touch sensor and control with random pulse spacing |
| CN101243385A (en) * | 2005-08-12 | 2008-08-13 | 3M创新有限公司 | Touch screen having reduced susceptibility to radio frequency interference |
| WO2013038719A1 (en) * | 2011-09-14 | 2013-03-21 | シャープ株式会社 | Touch panel controller, touch panel system, and method for operating touch panel system |
| CN202794402U (en) * | 2012-09-21 | 2013-03-13 | 张艳 | Screen painting function testing device of touch screen |
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