CN110309023B - Off-line detection method for touch screen of vehicle machine - Google Patents
Off-line detection method for touch screen of vehicle machine Download PDFInfo
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- CN110309023B CN110309023B CN201910541228.4A CN201910541228A CN110309023B CN 110309023 B CN110309023 B CN 110309023B CN 201910541228 A CN201910541228 A CN 201910541228A CN 110309023 B CN110309023 B CN 110309023B
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- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
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Abstract
The invention relates to the technical field of vehicle-mounted touch screens, in particular to an off-line detection method for a vehicle touch screen, which comprises the following steps: presetting a detection program and a multi-touch screen mode for triggering the detection program according to the type of the touch screen; defining one or more sub-detection programs, and setting the color corresponding to each detection result of the sub-detection programs; defining a certain color bar area in a color bar display area or a certain designated divided area in a single-color display area to correspondingly execute one of the seed detection programs; and triggering a detection program in a designated area of the display screen so as to execute a corresponding required sub-detection program, and acquiring a detection result of the sub-detection program according to real-time color display or color conversion of the sub-detection program. According to the invention, the detection result is transmitted through the color development and the color development change condition, so that the off-line detection function of the separated touch screen is realized, the coupling frequency with a host in the production process of the touch screen is effectively reduced, and whether the touch screen is from the fault condition or not is conveniently judged when the fault occurs.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted touch screens, in particular to an off-line detection method for a vehicle touch screen.
Background
Most of the existing vehicle-mounted vehicle systems adopt a screen-machine separation design, and the touch screen is connected with the host machine through an LVDS cable. The touch screen can start the touch function only when being connected with a host, and the step of detecting the touch function by the host comprises the following steps: reading the version number of the touch firmware, starting a self-checking program of the touch chip, reading back the result, drawing a line on a screen, checking whether the line is broken or not, and the like. In the production process of the car machine touch screen, if the touch function detection is to be carried out on the touch screen, the main steps are that the host computer is powered on, a factory setting mode is entered, the system coordinate lineation function is called out, a corresponding detection Application Program (APK) is started, and then the touch function detection is carried out. Although the touch function detection method can intuitively and accurately analyze and judge, the touch function detection method can be carried out only by matching the host, the touch screen is coupled with the host for many times in the production and detection processes, and if a client uses the hosts produced by different manufacturers, the communication protocol needs to be unified, so that the independent production of the host and the touch screen is not facilitated.
Disclosure of Invention
The invention aims to overcome the defect that the conventional vehicle-mounted touch screen which is separately arranged from a host machine needs to be coupled with the host machine during detection and cannot be independently tested off line.
In order to achieve the purpose, the invention discloses an offline detection method for a vehicle machine touch screen, wherein the touch screen comprises a display screen, a touch chip, an FPD-Link III deserializer and a microprocessor, the touch chip transmits touch information of the display screen to the microprocessor, the microprocessor drives the FPD-Link III deserializer to develop color on the display screen, and on the basis, the offline detection method for the vehicle machine touch screen comprises the following steps:
presetting a detection program and a multi-finger touch screen mode for triggering the detection program according to the type of the touch screen, wherein a monochrome display area or a color bar display area is arranged in an interface of the detection program;
defining one or more sub-detection programs, and setting the color corresponding to each detection result of the sub-detection programs;
defining a certain color bar area in a color bar display area or a certain designated division area in a single-color display area to correspondingly execute one of the seed detection programs;
triggering a detection program in a designated area of a display screen by using a preset multi-finger touch screen mode; selecting a predefined color bar area or a division area in an interface of a detection program so as to execute a corresponding required sub-detection program; and according to the real-time color display or color conversion of the sub-detection program, acquiring the detection result of the sub-detection program.
Preferably, the sub-detection program includes one or more of a version number detection program, a touch chip self-test program, and a disconnection detection program.
Further, the version number detection program comprises the following steps:
presetting the color corresponding to each character or number required by the version number;
the microprocessor drives the FPD-Link III deserializer to display the color corresponding to the first character on the display screen according to the first character information of the output version number;
the touch chip detects the operation of clicking the touch display screen in real time, when the operation of clicking the display screen is detected, the touch chip establishes a connection with the microprocessor, and the microprocessor drives the FPD-Link III deserializer to display the color corresponding to the next character of the version number on the display screen according to the next character information of the version number;
and when the microprocessor drives the FPD-Link III deserializer to display the color corresponding to the last character on the display screen and receives the operation information of the single-click display screen detected by the touch chip or does not receive the operation information of the single-click display screen of the touch chip within a period of time, exiting the version number detection program and returning to the detection program.
Further, the touch chip self-test program comprises the following steps:
presetting colors corresponding to self-checking, qualified self-checking and unqualified self-checking of the chip;
triggering a self-checking program of the touch chip by the microprocessor, and driving the FPD-Link III deserializer to display the corresponding color in the self-checking of the chip on the display screen by the microprocessor;
and after the self-checking program is finished, the microprocessor acquires a self-checking result of the touch chip, and the microprocessor drives the FPD-Link III deserializer to display the color corresponding to the qualified self-checking or the unqualified self-checking on the display screen according to the self-checking result.
Further, the disconnection detecting program includes the steps of:
defining color parameters corresponding to the horizontal coordinate and the vertical coordinate of each pixel point in the display screen respectively;
performing point touch or dragging operation in any touch range of the display screen, and detecting the transverse and longitudinal conduction conditions of a contact point in the touch range in real time by a touch chip and feeding the conditions back to a microprocessor;
if the transverse and longitudinal conduction conditions of the contact point in the touch range are normal, the microprocessor calculates to obtain color parameters corresponding to the transverse coordinate and the longitudinal coordinate of the contact point respectively, and drives the FPD-Link III deserializer to display the color synthesized by the two color parameters of the contact point on a display screen;
if the display screen is not touched or no signal exists in the transverse direction or the longitudinal direction of the contact in the touch range, the microprocessor judges that a disconnection contact exists in the touch range and then drives the FPD-Link III deserializer to display the color corresponding to the contact disconnection prompting signal on the display screen.
Preferably, after the detection program is completed, the user continuously touches the touch screen in the preset effective touch area, and exits from the detection program interface.
Preferably, the multi-finger touch screen mode comprises the following steps:
pressing the upper right corner area of the display screen for a long time and forming a first contact;
under the condition that the first contact is continuously formed, pressing the right lower corner area of the display screen for a long time and forming a second contact;
under the condition of continuously forming the first contact and the second contact, pressing down and continuously forming three third contacts in any area of the display screen for at least 5 seconds, and entering a detection program interface;
if there is no reaction, the first contact, the second contact, and the third contact are formed again.
The invention has the beneficial effects that: the detection result is transmitted through the color development and the color development change condition, the off-line detection function of the separated touch screen is realized, the coupling times of the touch screen and a host in the production process are effectively reduced, the dependence degree of the touch screen on the host is reduced, and whether the touch screen is from the fault condition or not is conveniently judged when the touch screen breaks down.
Drawings
FIG. 1: and the overall operation schematic diagram of the off-line detection method of the touch screen of the vehicle machine.
FIG. 2: and the internal hardware logic of the car machine touch screen is connected with the schematic diagram.
FIG. 3: and the operation diagram of the version number detection program.
FIG. 4: and (4) an operation schematic diagram of a touch chip self-checking program.
FIG. 5: operation schematic diagram of the disconnection detection program.
FIG. 6: and (4) an operation schematic diagram of a multi-finger touch screen mode.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments and the accompanying drawings, and it is obvious that the described embodiments are some, not all embodiments of the present invention, and other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-2, the invention discloses an offline detection method for a touch screen of a vehicle machine, which is applicable to the touch screen of the vehicle machine, wherein the touch screen is separately arranged from a corresponding host, the touch screen comprises a display screen, a touch chip, an FPD-Link III deserializer and a microprocessor, the touch chip transmits touch information of the display screen to the microprocessor, and the microprocessor drives the FPD-Link III deserializer to display colors on the display screen. The off-line detection method for the touch screen of the car machine comprises the following steps:
s101, presetting a detection program and a multi-finger touch screen mode for triggering the detection program according to the type of the touch screen, wherein a single-color display area or a color bar display area is arranged in an interface of the detection program.
Specifically, the detection program and the multi-touch screen mode are stored in the microprocessor, and the multi-touch screen mode is a logic command attached to the detection program and is used for triggering the detection program in any interface after the touch screen is powered on. After a touch screen is electrified (12V), a multi-finger touch screen mode is used for triggering a detection program, the processing capacity of a microprocessor in the touch screen is limited due to no participation of a host, the offline electrified touch screen cannot display characters, coordinate lines and the like in a superposed mode and only can display colors, and the detection program interface can be monochrome whole-screen display or multi-color display formed by a plurality of color stripes due to different types of FPD-Link III deserializers.
S102, defining one or more sub-detection programs, and setting the color corresponding to each detection result of the sub-detection programs.
Specifically, the sub-detection program is compiled and stored in the microprocessor, is used for actually detecting the single actual condition of the touch screen, is limited in that the off-line electrified touch screen can only display colors, each detection result or parameter to be displayed of the sub-detection program is set to be displayed in a corresponding color, and the sub-detection program which can be realized comprises a version number detection program, a touch chip self-detection program and a disconnection detection program.
S103, defining a certain color bar area in the color bar display area or a certain block of division area designated in the single color display area to correspondingly execute one of the seed detection programs.
Specifically, the detection program and the sub-detection programs are associated, so that each single detection requirement is convenient to execute, because the detection program interface is often a monochrome display area or a colorstripe display area, for the colorstripe display area, a single colorstripe area is defined to correspondingly trigger one of the sub-detection programs, and for the monochrome display area, the whole display area needs to be divided in area position, and the sub-detection programs correspondingly triggered by each divided area are defined.
S104, triggering a detection program in a preset multi-touch screen mode in a designated area of a display screen; selecting a predefined color bar area or a division area in an interface of a detection program so as to execute a corresponding required sub-detection program; and according to the real-time color display or color conversion of the sub-detection program, acquiring the detection result of the sub-detection program.
The invention provides an implementation scheme of a multi-finger touch screen mode, which comprises the following steps of:
s201, pressing the upper right corner area of the display screen for a long time and forming a first contact;
s202, under the condition that the first contact is continuously formed, pressing the right lower corner area of the display screen for a long time to form a second contact;
s203, under the condition that the first contact and the second contact are continuously formed, pressing down and continuously forming three third contacts in any area of the display screen for at least 5 seconds, and entering a detection program interface;
and S204, if no reaction exists, forming the first contact, the second contact and the third contact again.
The invention provides an implementation scheme of a version number detection program, which comprises the following steps as shown in figure 3:
s301, presetting colors corresponding to each character or number required by the version number.
In particular toEach touch screen corresponds to a version number, and the version number can include numbers or other characters, such as English letters or symbols; the version number is stored in the bit processor in hexadecimal form, each hexadecimal tree of the version number corresponding to an independent color. In this embodiment, the colors of the resistance color rings are used to define the numbers 0-9, for example, black is represented in the resistance color ring table as 10 0 Here, the number "0" is indicated, and the brown color is 10 in the resistance color circle table 1 Here, the number "1" or the like is represented, and the remaining hexadecimal a, B, C, D, E, and F are additionally defined as other colors.
S302, the microprocessor drives the FPD-Link III deserializer to display the color corresponding to the first character of the version number on the display screen.
And S303, detecting the operation of clicking the touch display screen in real time by the touch chip, establishing a connection between the touch chip and the microprocessor when the operation of clicking the display screen is detected, and driving the FPD-Link III deserializer to sequentially display the color corresponding to the next character on the display screen by the microprocessor.
And S304, when the microprocessor drives the FPD-Link III deserializer to output the color corresponding to the last character of the version number and receives the operation information of the single-click display screen detected by the touch chip or does not receive the operation information of the single-click display screen of the touch chip within a period of time, quitting the version number detection program and returning to the detection program.
The invention provides an implementation scheme of a self-checking program of a touch chip, which comprises the following steps as shown in fig. 4:
s401, presetting colors corresponding to self-checking, self-checking qualified and self-checking unqualified chips.
S402, triggering a self-checking program of the touch chip by the microprocessor, and driving the FPD-Link III deserializer to display the corresponding color in the self-checking of the chip on the display screen by the microprocessor.
And S403, after the self-checking program is finished, the microprocessor acquires a self-checking result of the touch chip, and the microprocessor drives the FPD-Link III deserializer to display the color corresponding to the qualified self-checking or the unqualified self-checking on the display screen according to the self-checking result.
The invention provides an implementation scheme of a disconnection detection program, as shown in fig. 5, comprising the following steps:
s501, color parameters corresponding to the horizontal coordinate and the vertical coordinate of the pixel point in the display screen are defined.
Specifically, the overall resolution of the display screen is composed of a transverse resolution and a longitudinal resolution, the product of the transverse resolution and the longitudinal resolution represents the number of pixels in the display screen, which is equivalent to that in a planar coordinate system, each pixel has a corresponding transverse coordinate and a corresponding longitudinal coordinate, all the transverse coordinates and the longitudinal coordinates are defined to respectively correspond to one color, for example, the transverse coordinates and the longitudinal coordinates of the display screen are 1920 and 1080 respectively, the contact is defined to be transversely conducted to correspond to red, the contact is defined to be longitudinally conducted to correspond to green, the lengths of color parameters of the red and the green are only 255, the transverse coordinates and the longitudinal coordinates are respectively equally divided into 255 segments, and each segment of range corresponds to one color parameter in an equal proportion.
S502, point touch or dragging operation is carried out in any touch range of the display screen, and the touch chip detects the transverse and longitudinal conduction conditions of the touch point in the touch range in real time and feeds the conditions back to the microprocessor.
And S503, if the transverse and longitudinal conduction conditions of the contact in the touch range are normal, the microprocessor calculates to obtain color parameters corresponding to the transverse coordinate and the longitudinal coordinate of the contact respectively, and drives the FPD-Link III deserializer to display the color synthesized by the two color parameters of the contact on the display screen.
S504, if the display screen is not touched or no signal exists in the transverse direction or the longitudinal direction of the contact point in the touch range, the microprocessor judges that a disconnection contact point exists in the touch range and drives the FPD-Link III deserializer to display the color corresponding to the contact point disconnection prompting signal on the display screen.
Specifically, when the touch point is touched or dragged within the touch range, if the touch point is normally conducted in both the horizontal and vertical directions, the display screen displays a composite color jointly participated by two groups of color parameters of the touch point, and if the situation that the measuring point has no signal in the horizontal or vertical direction is detected, the display screen displays white (a color corresponding to a touch point disconnection prompting signal) to remind a tester of the touch point disconnection in real time.
S505, after the wire breakage detection program is executed, all the point touches or dragging operations are regarded as wire breakage detection actions, so an operation mode of exiting the wire breakage detection program needs to be set.
In an alternative embodiment, continuous tapping (the embodiment is set to continuously tap 6 times) is performed in the effective touch area of the detection program interface, the detection program is exited, and the normal use state of the touch screen is returned.
In conclusion, the off-line detection method for the vehicle touch screen provided by the invention transmits the detection result through the color development and the color development change condition, realizes the off-line detection function of the separated touch screen, effectively reduces the coupling frequency of the touch screen and a host in the production process, reduces the dependence degree of the touch screen on the host, is convenient for judging whether the fault condition is from the touch screen or not when the fault occurs, and has obvious improvement significance.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The off-line detection method for the vehicle touch screen is characterized in that the touch screen comprises a display screen, a touch chip, an FPD-Link III deserializer and a microprocessor, the touch chip transmits touch information of the display screen to the microprocessor, the microprocessor drives the FPD-Link III deserializer to display color on the display screen, and the off-line detection method for the vehicle touch screen comprises the following steps:
presetting a detection program and a multi-touch screen mode for triggering the detection program according to the type of the touch screen, wherein a monochrome display area or a color bar display area is arranged in an interface of the detection program;
defining one or more sub-detection programs, and setting the color corresponding to each detection result of the sub-detection programs;
defining a certain color bar area in a color bar display area or a certain designated divided area in a single-color display area to correspondingly execute one of the seed detection programs;
triggering a detection program in a preset multi-finger touch screen mode in a designated area of a display screen; selecting a predefined color bar area or a division area in an interface of a detection program so as to execute a corresponding required sub-detection program; according to the real-time color display or color conversion of the sub-detection program, the detection result of the sub-detection program is obtained;
the multi-finger touch screen mode comprises the following steps:
pressing the upper right corner area of the display screen for a long time and forming a first contact;
under the condition of continuously forming the first contact point, long-pressing the right lower corner area of the display screen and forming a second contact point;
under the condition of continuously forming the first contact and the second contact, pressing down and continuously forming three third contacts in any area of the display screen for at least 5 seconds, and entering a detection program interface;
if there is no reaction, the first contact, the second contact, and the third contact are formed again.
2. The on-board unit vehicle touch screen offline detection method according to claim 1, wherein the sub-detection programs comprise one or more of a version number detection program, a touch chip self-detection program and a disconnection detection program.
3. The offline detection method for the car-mounted machine touch screen according to claim 2, wherein the version number detection program comprises the following steps:
presetting the color corresponding to each character or number required by the version number;
the microprocessor drives the FPD-Link III deserializer to display the color corresponding to the first character of the version number on the display screen;
the touch chip detects the operation of clicking the touch display screen in real time, when the operation of clicking the display screen is detected, the touch chip establishes a connection with the microprocessor, and the microprocessor drives the FPD-Link III deserializer to sequentially output the color corresponding to the next character of the version number;
and when the microprocessor drives the FPD-Link III deserializer to output the color corresponding to the last character of the version number and receives the operation information of the single-click display screen detected by the touch chip or does not receive the operation information of the single-click display screen of the touch chip within a period of time, exiting the version number detection program and returning to the detection program.
4. The off-line detection method for the car machine touch screen according to claim 2, wherein the touch chip self-test program comprises the following steps:
presetting colors corresponding to self-checking, qualified self-checking and unqualified self-checking of the touch chip;
the microprocessor triggers a self-checking program of the touch chip, directly drives the FPD-Link III deserializer, and displays corresponding colors in the self-checking of the touch chip on a display screen;
and after the self-checking program is finished, the microprocessor acquires a self-checking result of the touch chip, and the microprocessor directly drives the FPD-Link III deserializer to display the color corresponding to the qualified self-checking or the unqualified self-checking on the display screen according to the self-checking result.
5. The on-board unit touch screen offline detection method according to claim 2, wherein the disconnection detection program comprises the following steps:
defining color parameters corresponding to the horizontal coordinate and the vertical coordinate of each pixel point in the display screen respectively;
performing point touch or dragging operation in any touch range of the display screen, and detecting the transverse and longitudinal conduction conditions of a contact point in the touch range in real time by a touch chip and feeding the conditions back to a microprocessor;
if the transverse and longitudinal conduction conditions of the contact point in the touch range are normal, the microprocessor calculates to obtain color parameters corresponding to the transverse coordinate and the longitudinal coordinate of the contact point respectively, and drives the FPD-Link III deserializer to display the color synthesized by the two color parameters of the contact point on a display screen;
if the display screen is not touched or no signal exists in the transverse direction or the longitudinal direction of the contact in the touch range, the microprocessor judges that a disconnection contact exists in the touch range and drives the FPD-Link III deserializer to display the color corresponding to the contact disconnection prompting signal on the display screen.
6. The on-board unit touch screen offline detection method according to claim 1, wherein after the detection procedure is completed, the detection procedure is exited by continuous tapping in a preset effective touch area.
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