System and method for testing pressure of touch screen based on 3D modeling mode and pressure testing machine

Abstract

The invention discloses a system and a method for realizing touch screen pressure testing based on a 3D modeling mode and a pressure testing machine, and relates to the technical field of touch screen pressure testing, the system comprises a pressure testing machine, a control module, a motor driving module, a display screen module, a camera module, a PC upper computer, a power supply circuit, a first serial interface and a second serial interface, wherein the pressure testing machine is connected with the input end of the control module; the pressure testing machine is connected with the output end of the motor driving module; the output end of the control module is connected with the input end of the motor driving module and the input end of the display screen module. The PC upper computer is connected with the control module through a first serial interface; and the PC upper computer is connected with the camera module through a second serial interface. According to the invention, the sliding path is established in the PC upper computer, and the touch mechanism is controlled to drive the touch head to slide according to the sliding path so as to simulate the sliding process of a finger in an actual situation, so that the sliding pressure test on the touch screen can be realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of touch screen pressure testing, and in particular, relates to a system, method and pressure testing machine for implementing touch screen pressure testing based on a 3D modeling approach. Background Art

[0002] Touch screens have been widely used in devices that use human-computer interactive touch screens, such as tablet computers, smart phones, and car central control screens, due to their advantages of easy operation, intuitiveness, and flexibility. At the same time, with the continuous development and progress of science and technology, the requirements for touch screens are getting higher and higher, requiring not only high touch sensitivity and no false alarms, but also good operation performance of touch screen clicks, single-finger sliding, multi-finger sliding, and specific path sliding.

[0003] To detect whether the touch performance of the touch screen is good, it is necessary to perform repeated pressure tests on the touch screen. If the test is done manually, it will cost a lot of money and the test results are unreliable. Patent CN209525187U provides a touch screen tempered glass pressure test device, which includes: a base, a guide rod mounted on the base, a guide rail installed on the base and located on the lower side of the guide rod, a fixing fixture slidably set on the guide rod for fixing the tempered glass, a pushing module installed on the base, and a test module installed on one end of the base away from the pushing module; the pushing module includes a driving motor installed on one side of the base, a driving screw connected to the driving motor, a transmission seat connected to the driving screw, and a test pressure head installed on the transmission seat corresponding to the fixing fixture, and the transmission seat is connected to the guide rail and drives along the guide rod.

[0004] The above patent discloses a touch screen tempered glass pressure testing device, but the device has a single function of pressure testing the touch screen and cannot perform sliding pressure testing on the touch screen, especially when the touch screen is a curved screen. In addition, when the pressure applied to the touch screen during the pressure test is too large, the device cannot automatically stop the test and issue an early warning, which can easily cause damage to the touch screen. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a system, method and pressure testing machine for implementing touch screen pressure testing based on 3D modeling to achieve the purpose of performing sliding pressure testing on the touch screen in view of the deficiencies in the prior art.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] The present invention provides a system for implementing a pressure test of a touch screen based on a 3D modeling method, comprising a pressure tester (1), a control module (2), a motor drive module (3), a display screen module (4), a camera module (5), a PC host computer (6), a power supply circuit (7), a first serial interface (8) and a second serial interface (9), wherein the pressure tester (1) is connected to an input end of the control module (2); the pressure tester (1) is connected to an output end of the motor drive module (3); the output end of the power supply circuit (7) is respectively connected to an input end of the control module (2) and an input end of the motor drive module (3); the output end of the control module (2) is respectively connected to an input end of the motor drive module (3) and an input end of the display screen module (4); the PC host computer (6) is connected to the control module (2) via the first serial interface (8); and the PC host computer (6) is connected to the camera module (5) via the second serial interface (9).

[0008] Furthermore, the PC host computer (6) communicates with the control module (2) via a first serial interface (8); the PC host computer (6) communicates with the camera module (5) via a second serial interface (9); and the motor drive module (3) and the display screen module (4) are controlled by the control module (2).

[0009] The present invention also provides a pressure testing machine (1) for the above-mentioned system, comprising a touch mechanism, a lifting mechanism, a connecting mechanism, a supporting mechanism, an upper frame (11) and a lower frame (12), wherein the touch mechanism is connected to the lifting mechanism via the connecting mechanism; the lifting mechanism is respectively connected to the upper frame (11) and the lower frame (12), and the supporting mechanism is arranged above the lower frame (12).

[0010] Furthermore, the touch mechanism comprises a touch block (101) and a pressure sensor (102); the touch block (101) is connected to the connection mechanism; one end of the touch block (101) is connected to a touch head (103); and the pressure sensor (102) is arranged on the inner side of the touch head (103).

[0011] Furthermore, the output end of the pressure sensor (102) is connected to the input end of the control module (2).

[0012] Furthermore, the lifting mechanism comprises a guide rail (201), a motor (202) and a second pulley (203); the motor (202) is installed in the lower frame (12); a first pulley (204) is installed on the motor shaft of the motor (202); the second pulley (203) is connected to the upper frame (11); the first pulley (204) and the second pulley (203) are respectively covered with a belt (205); one end of the guide rail (201) is connected to the upper frame (11), and the other end of the guide rail (201) is connected to the lower frame (12); the guide rail (201) is provided with a guide rail groove (206), the belt (205) is connected to a moving block (207), a pulley (208) is installed on one side of the moving block (207), and the pulley (208) is embedded in the guide rail groove (206).

[0013] Furthermore, the connection mechanism comprises a connection rod (301), one end of the connection rod (301) is connected to the touch block (101), and the other end of the connection rod (301) is movably connected to a fixed rod (302); the fixed rod (302) is connected to the moving block (207).

[0014] Furthermore, the support mechanism comprises a support rod (401), one end of the support rod (401) is connected to the lower frame (12), and the other end of the support rod (401) is sleeved with a bushing (402).

[0015] Furthermore, the lower frame (12) and the moving block (207) are respectively provided with line channels (501).

[0016] The present invention also provides a method for implementing a touch screen pressure test based on a 3D modeling method, the method comprising the following steps:

[0017] Step 1: Modeling and displaying the activity space of the touch mechanism and the shape of the touch screen through a PC host computer (6);

[0018] Step 2: Setting the system's operating mode and related parameters through the PC host computer (6);

[0019] Step 3, using the camera module (5) to capture a picture of the current interface of the display screen module (4);

[0020] Step 4: select the captured image of the current interface of the display screen module (5) through the PC host computer (6);

[0021] Step 5: Select the system working mode through the PC host computer (6);

[0022] Step 6, control the system through the PC host computer (6) to start working;

[0023] Step 7: Each time the system completes a pressure test, the camera module (5) captures the current interface of the display screen module (4), and the control module (2) determines whether the pressure applied to the touch screen during each pressure test exceeds a set pressure threshold;

[0024] Step eight, judging by the PC host computer (6) whether the picture captured once on the current interface of the display screen module (4) each time a pressure test is completed is an abnormal picture.

[0025] The touch screen pressure testing system, method and pressure testing machine of the present invention have the following advantages:

[0026] (1) The present invention establishes a sliding path in a PC host computer, and then drives the touch head to slide along the sliding path by controlling the touch mechanism of the pressure tester to simulate the sliding process of a finger in an actual situation, thereby realizing a sliding pressure test on the touch screen.

[0027] (2) The touch block of the present invention has at least two holes at its lower end. If only one hole at its lower end is connected to a touch head, a single-position click function in the click mode can be realized. If at least two holes at its lower end are connected to a touch head, a multi-position click function in the click mode can be realized.

[0028] (3) The system and method of the present invention can implement click pressure testing and sliding pressure testing on the touch screen regardless of whether the touch screen is a flat screen or a curved screen.

[0029] (4) Through the system and method of the present invention, the pressure applied to the touch screen during each pressure test can be compared with the set pressure threshold. When the result of the comparison and judgment is that the pressure applied to the touch screen exceeds the set pressure threshold and the excess is greater than 0.1 Newton, the PC host computer control system automatically suspends operation to prevent excessive pressure from damaging the touch screen.

[0030] (5) The present invention can adjust and control the height of the support rod to meet the pressure test requirements of most special-shaped screens on the market.

[0031] (6) The system and method of the present invention can ensure the precise positioning and stable movement of the touch mechanism in space, thereby realizing pressure testing of different positions of the touch screen. At the same time, it is applicable to most scenarios of pressure testing of the touch screen and saves manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] This specification includes the following drawings, which show:

[0033] Figure 1It is a logical structure diagram of the system of the present invention;

[0034] Figure 2 is a front view structural diagram of the pressure testing machine of the present invention;

[0035] Figure 3 is a top view of the pressure testing machine of the present invention;

[0036] Figure 4 is a cross-sectional structural diagram of a touch head of the present invention;

[0037] Figure 5 is a schematic structural diagram of a touch block of the present invention;

[0038] Figure 6 It is a partial structural schematic diagram of the moving block of the present invention;

[0039] Figure 7 It is a schematic structural diagram of a fixing rod with a ring sleeve according to the present invention;

[0040] Figure 8 It is a flowchart of the method of the present invention.

[0041] Explanation of the accompanying drawings: 1. pressure tester; 2. control module; 3. motor drive module; 4. display module; 5. camera module; 6. PC host computer; 7. power supply circuit; 8. first serial interface; 9. second serial interface; 11. upper frame; 12. lower frame; 101. touch block; 102. pressure sensor; 103. touch head; 104. hole groove; 201. guide rail; 202. motor; 203. second pulley; 204. first pulley; 205. belt; 206. guide rail groove; 207. moving block; 208. pulley; 209. bump; 210. screw hole; 211. motor groove; 212. pulley groove; 301. connecting rod; 302. fixing rod; 303. smooth surface of fixing rod; 304. nut; 305. ring; 401. support rod; 402. bushing; 403. positioning hole; 501. line channel. DETAILED DESCRIPTION

[0042] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating their implementation.

[0043] Figure 1It is a logical structure block diagram of the system of the present invention, including a pressure testing machine 1, a control module 2, a motor drive module 3, a display module 4, a camera module 5, a PC host computer 6, a power supply circuit 7, a first serial interface 8 and a second serial interface 9, wherein the pressure testing machine 1 is connected to the input end of the control module 2; the pressure testing machine 1 is connected to the output end of the motor drive module 3; the output end of the power supply circuit 7 is respectively connected to the input end of the control module 2 and the input end of the motor drive module 3; the output end of the control module 2 is respectively connected to the input end of the motor drive module 3 and the input end of the display module 4; the PC host computer 6 is connected to the control module 2 through the first serial interface 8; the PC host computer 6 is connected to the camera module 5 through the second serial interface 9.

[0044] In this embodiment, the control module 2 uses the control chip ATMEGA2560; the motor drive module 3 uses the first motor drive chip A4988, the second motor drive chip A4988 and the third motor drive chip A4988; the display screen module 4 uses an OLED display screen; and the camera module 5 uses an industrial camera. In addition, the control module 2, the motor drive module 3, the power supply circuit 7, the first serial interface 8 and the second serial interface 9 are integrated on the same circuit board; the power supply circuit 7 includes a first output terminal and a second output terminal; the camera of the camera module 7 is facing the display screen module 6 (in this embodiment, the camera of the industrial camera is facing the OLED display screen); the PC host computer 6 communicates with the control module 2 through the first serial interface 8; the PC host computer 6 communicates with the camera module 5 through the second serial interface 9; the motor drive module 3 and the display screen module 4 are controlled by the control module 2.

[0045] See also Figures 2 to 7 The pressure testing machine 1 includes a touch mechanism, a lifting mechanism, a connecting mechanism, a supporting mechanism, an upper frame 11 and a lower frame 12. The touch mechanism is connected to the lifting mechanism through the connecting mechanism; the lifting mechanism is connected to the upper frame 11 and the lower frame 12 respectively, and the supporting mechanism is arranged above the lower frame 12. The aforementioned touch mechanism includes a touch block 101 and a pressure sensor 102. The touch block 101 is connected to the connecting mechanism, specifically, the touch block 101 is connected to the connecting rod 301; one end of the touch block 101 is connected to a touch head 103, specifically, the lower end of the touch block 101 is provided with at least two holes 104 (see Figure 5), the hole 104 is connected to the touch head 103; the pressure sensor 102 is arranged on the inner side of the touch head 103, specifically, the pressure sensor 102 is arranged on the inner top end of the touch head 103; the output end of the pressure sensor 102 is connected to the input end of the control module 2, specifically, the output end of the pressure sensor 102 is connected to the input end of the control module 2 through the signal line through the line channel 501. The aforementioned lifting mechanism includes a guide rail 201, a motor 202 and a second pulley 203, and the motor 202 is installed in the lower frame 12, specifically, the lower frame 12 is provided with a motor slot 211 (see Figure 3 ), the motor 202 is installed in the motor slot 211 opened in the lower frame 12; the motor shaft of the motor 202 is installed with a first pulley 204; the second pulley 203 is connected to the upper frame 11, and the first pulley 204 and the second pulley 203 are respectively covered with a belt 205; specifically, the upper frame 11 is provided with a pulley slot 212 (see Figure 2 ), the second pulley 203 is installed in the pulley groove 212 opened in the upper frame 11, and the first pulley 204 and the second pulley 203 are respectively covered with a belt 205; one end of the guide rail 201 is connected to the upper frame 11, and the other end of the guide rail 201 is connected to the lower frame 12; the guide rail 201 has a guide rail groove 206, and the belt 205 is connected to a moving block 207, and a pulley 208 is installed on one side of the moving block 207, and the pulley 208 is embedded in the guide rail groove 206. Specifically, the guide rail 201 has a guide rail groove 206, and a protrusion 209 is provided on one surface of the moving block 207, and the protrusion 209 is fixed on the belt 205. A pulley 208 is installed on one side of the moving block 207, and the pulley 208 is embedded in the guide rail groove 206. In addition, screw holes 210 are respectively provided on two surfaces of the moving block 207 that are perpendicular to the surface of the moving block 207 with the protrusion 209 and parallel to the upper frame 11 (see Figure 6 The aforementioned connection mechanism includes a connection rod 301, one end of which is connected to the touch block 101, and the other end of the connection rod 301 is movably connected to a fixing rod 302; specifically, a fixing rod smooth surface 303 is provided in the middle of the fixing rod 302 (see Figure 7 ), a ring 305 is sleeved on the smooth surface 303 of the fixed rod, one end of the connecting rod 301 is connected to the touch block 101, and the other end of the connecting rod 301 is connected to the ring 305; the fixed rod 302 is connected to the moving block 207, specifically, one end of the fixed rod 302 is threadedly connected to the screw hole 210, and the other end of the fixed rod 302 is screwed with a nut 304. The aforementioned support mechanism includes a support rod 401. One end of the support rod 401 is connected to the lower frame 12, and the other end of the support rod 401 is sleeved with a bushing 402. Specifically, at least two rows of positioning holes 403 are equidistantly provided on the lower frame 12, one end of the support rod 401 is inserted into the positioning hole 403, and the other end of the support rod 401 is sleeved with a bushing 402. In addition, the lower frame 12 and the moving block 207 are respectively provided with line channels 501.

[0046] In the present invention, the pressure testing machine 1 has at least three lifting mechanisms and connecting mechanisms. In this embodiment, an example is taken in which there are three lifting mechanisms and three connecting mechanisms. They are respectively referred to as the first lifting mechanism, the first connecting mechanism, the second lifting mechanism, the second connecting mechanism, the third lifting mechanism and the third connecting mechanism. Then, the touch mechanism is respectively connected to the first connecting mechanism, the second connecting mechanism and the third connecting mechanism; the first connecting mechanism is also connected to the first lifting mechanism; the second connecting mechanism is also connected to the second lifting mechanism; and the third connecting mechanism is also connected to the third lifting mechanism.

[0047] In the present invention, the pressure tester 1 is used to perform pressure testing on the touch screen, specifically, the pressure tester 1 is used to perform click pressure testing or sliding pressure testing on the touch screen. The control module 2 is used to control the motor drive module 3 and the display screen module 4, and is also used to communicate with the PC host computer 6. Specifically, different output ends of the control chip ATMEGA2560 are respectively connected to the input ends of the OLED display screen, the first motor drive chip A4988, the second motor drive chip A4988, and the third motor drive chip A4988 to achieve control of the OLED display screen, the first motor drive chip A4988, the second motor drive chip A4988, and the third motor drive chip A4988. The control chip ATMEGA2560 is also connected to the PC host computer 6 through the first serial interface 8 to achieve communication with the PC host computer 6. The motor drive module 3 is used to drive and control the motor 202. Specifically, the output ends of the first motor drive chip A4988, the second motor drive chip A4988 and the third motor drive chip A4988 are respectively connected to the input ends of the motors 202 in the first lifting mechanism, the second lifting mechanism and the third lifting mechanism, so that the first motor drive chip A4988, the second motor drive chip A4988 and the third motor drive chip A4988 respectively drive and control the motors 202 in the first lifting mechanism, the second lifting mechanism and the third lifting mechanism. The display screen module 4 is used to display the set pressure value, the system operation status, the number of times the pressure test has been performed and the total number of times the pressure test needs to be performed. Specifically, the set pressure value, the system operation status, the number of times the pressure test has been performed and the total number of times the pressure test needs to be performed are displayed through an OLED display screen. The camera module 5 is used to capture a picture of the current interface of the display screen module 4 after setting the working mode and related parameters of the system, and to capture a picture of the current interface of the display screen module 4 after each pressure test, and to communicate with the PC host computer 6. Specifically, the industrial camera is used to capture a picture of the current interface of the OLED display screen after setting the working mode and related parameters of the system, and to capture a picture of the current interface of the OLED display screen after each pressure test. The industrial camera communicates with the PC host computer 6 through the second serial interface 9. The PC host computer 6 is used to provide software control and to communicate with the control module 2. Specifically, the PC host computer 6 provides functions including automatic positioning, manual compensation, system working mode setting function, system working mode switching function, related parameter setting function, picture comparison function, automatic data upload to cloud storage function, control system working state is pause / start function, abnormal reminder function and reset function, etc., through these functions, the relevant control of the system can be realized, and the PC host computer 6 communicates with the control chip ATMEGA2560 through the first serial interface 8.The power supply circuit 7 is used to supply power to the control module 2 and the motor drive module 3. Specifically, the first output end of the power supply circuit 7 is connected to the input end of the first motor drive chip A4988, the second motor drive chip A4988 and the third motor drive chip A4988 respectively, and the 220V voltage is converted into a 12V voltage through the power supply circuit 7 to supply power to the first motor drive chip A4988, the second motor drive chip A4988 and the third motor drive chip A4988; the second output end of the power supply circuit 7 is connected to the input end of the control chip ATMEGA2560, and the 12V voltage is converted into a 5V voltage through the power supply circuit 7 to supply power to the control chip ATMEGA2560. The first serial interface 8 is used to connect the PC host computer 6 and the control module 2 to realize the communication between the PC host computer 6 and the control module 2. The second serial interface 9 is used to connect the PC host computer 6 and the camera module 5 to realize the communication between the PC host computer 6 and the camera module 5.

[0048] Figure 8 It is a flowchart of the method of the present invention. When the pressure test is performed on the touch screen, a reset operation needs to be performed first after the PC host computer 6 is turned on.

[0049] Step 1: Model and display the activity space of the touch mechanism and the shape of the touch screen through the PC host computer 6, that is, the corresponding Figure 8Step S1 in is modeled and displayed. Specifically, in step S1, by clicking "automatic positioning" in the PC host computer 6 software, the touch mechanism automatically positions the touch screen in space according to the position coordinates of the nine-square grid. In this process, the first motor driving chip A4988, the second motor driving chip A4988 and the third motor driving chip A4988 are controlled by the PC host computer 6 and the control chip ATMEGA2560, and then the three motors 202 in the three motor slots 211 in the lower frame 12 are driven and controlled by the first motor driving chip A4988, the second motor driving chip A4988 and the third motor driving chip A4988 respectively, and then the three motors 202 in the three motor slots 211 in the lower frame 12 respectively drive the belt 205 to rotate to control the up and down movement of the protrusion 209, thereby driving the up and down movement of the moving block 207. Because a fixed rod smooth surface 303 is provided in the middle of the fixed rod 302, and one end of the fixed rod 302 is threadedly connected to the screw hole 210, and the other end of the fixed rod 302 is screwed with a nut 304, the fixed rod smooth surface 303 is A circular ring 305 is sleeved, one end of the connecting rod 301 is connected to the touch block 101, and the other end of the connecting rod 301 is connected to the circular ring 305; therefore, during the up and down movement of the moving block 207, the touch head 103 of the touch mechanism can be controlled to move up, down, left and right in space, so as to press the touch screen according to the position coordinates of the nine-square grid. Each time the pressure is pressed, the pressure sensor 102 will detect the pressure value and feed it back to the control chip ATMEGA2560, and the control chip ATMEGA2560 will feed back the pressure value information to the PC host computer 6 through the first serial interface. The PC host computer 6 automatically models and displays the movable space of the touch mechanism and the shape of the touch screen according to the pressure value information fed back by the control chip ATMEGA2560. In this process, when the pressing pressure of the touch head 103 of the controlled touch mechanism on a certain point of the touch screen is not enough to make it impossible to collect the shape of the corresponding part of the touch screen, the pressure can be increased by clicking "manual compensation" in the software of the PC host computer 6, thereby ensuring the integrity of the touch screen shape collection.

[0050] Step 2: Set the system's operating mode and related parameters through the PC host 6, that is, Figure 8In step S2 of the embodiment, the working mode and related parameters are set. Specifically, in step S2, the working mode and related parameters of the system are set in the setting panel of the PC host computer 6 software. The set working modes include click mode and sliding test; the set related parameters include single-position click, multi-position click, total number of clicks and click speed in the click mode; the set related parameters also include the total number of slides in the sliding mode and at least three coordinates in the sliding mode, namely, the sliding starting point, the sliding turning point and the sliding end point; the set related parameters also include the pressure thresholds in the click mode and the sliding mode; wherein, in this embodiment, the set pressure thresholds is 0.5 Newton; in addition, since at least two holes 104 are opened at the lower end of the touch block 101, in order to realize single-position clicking and multi-position clicking in the clicking mode in this embodiment, it is necessary to connect a corresponding number of touch heads 103 to the hole 104 at the lower end of the touch block 101 of the touch mechanism. To realize single-position clicking in the clicking mode, only one touch head 103 needs to be connected to the hole 104 at the lower end of the touch block 101, and to realize multi-position clicking in the clicking mode, at least two touch heads 103 need to be connected to the hole 104 at the lower end of the touch block 101.

[0051] Step 3: Use the camera module 5 to capture a picture of the current interface of the display module 4, that is, Figure 8 Specifically, after step S2 is completed, in step S3, the industrial camera will capture a picture of the current interface of the OLED display screen as an original reference, and feed back the information of the original reference to the PC host computer 6 through the second serial interface.

[0052] Step 4: select the picture of the current interface of the display screen module 5 captured by the PC host computer 6, that is, Figure 8 Specifically, in step S4, the operator selects the original reference picture in the PC host computer 6, and the selected part is the part that needs to be compared with the original reference picture in the subsequent capture. At the same time, the PC host computer 6 will record the position coordinates of the selected part in the process of selecting the frame, so that the subsequent captured pictures can be compared with the selected part of the original reference picture according to the position coordinates.

[0053] Step 5: Select the system working mode through the PC host 6, which corresponds to Figure 8 In step S5, the working mode is selected. Specifically, after step S4 is completed, the working mode of the system is selected in step S5, that is, whether the next working mode of the system is the click mode or the slide mode.

[0054] Step 6: Control the system through the PC host computer 6 to start working, which corresponds to Figure 8Specifically, in step S6, by clicking "Pause / Start" in the PC host computer 6 software to control the pause and start of the touch screen pressure test, if the click mode is selected in step S5, the first motor driver chip A4988, the second motor driver chip A4988 and the third motor driver chip A4988 are controlled by the PC host computer 6 and the control chip ATMEGA2560, and then the three motors 202 in the three motor slots 211 in the lower frame 12 are driven and controlled by the first motor driver chip A4988, the second motor driver chip A4988 and the third motor driver chip A4988 respectively, and then the three motors 202 in the three motor slots 211 in the lower frame 12 are respectively driven to rotate the belt 205 to control the up and down movement of the protrusion 209, thereby driving the up and down movement of the moving block 207, because the fixed rod 302 A fixed rod smooth surface 303 is provided in the middle, and one end of the fixed rod 302 is threadedly connected to the screw hole 210, and a nut 304 is screwed on the other end of the fixed rod 302. A ring 305 is sleeved on the fixed rod smooth surface 303, one end of the connecting rod 301 is connected to the touch block 101, and the other end of the connecting rod 301 is connected to the ring 305; therefore, during the up and down movement of the moving block 207, the touch head 103 of the touch mechanism can be controlled to move up and down, left and right in space, so as to control the touch head 103 of the touch mechanism to move to the corresponding position in space just above the desired click position. At this time, the three motors 202 in the three motor slots 211 in the lower frame 12 respectively and simultaneously drive the belt 205 to rotate to control the up and down movement of the protrusion 209, and then drive the up and down movement of the moving block 207, so as to realize the click pressure test of the specified position of the touch screen;If the sliding mode is selected in step S5, the first motor driving chip A4988, the second motor driving chip A4988 and the third motor driving chip A4988 are controlled by the PC host computer 6 and the control chip ATMEGA2560, and then the three motors 202 in the three motor slots 211 in the lower frame 12 are driven and controlled by the first motor driving chip A4988, the second motor driving chip A4988 and the third motor driving chip A4988 respectively, and then the three motors 202 in the three motor slots 211 in the lower frame 12 respectively drive the belt 205 to rotate to control the up and down movement of the protrusion 209, and then drive the up and down movement of the moving block 207, so as to control the up and down, left and right movement of the touch head 103 of the touch mechanism in space, thereby controlling the touch head 103 of the touch mechanism to move to the corresponding position in space just above the sliding starting point. At this time, the three motors 202 in the three motor slots 211 in the lower frame 12 respectively and simultaneously drive the belt 205 to rotate to control the up and down movement of the protrusion 209, and then The moving block 207 is driven to move up and down, thereby driving the touch mechanism to move downward, so that the touch head 103 of the touch mechanism moves to the sliding starting point. Then, the first motor driving chip A4988, the second motor driving chip A4988 and the third motor driving chip A4988 are controlled by the PC host computer 6 and the control chip ATMEGA2560, and then the three motors 202 in the three motor slots 211 in the lower frame 12 are driven and controlled by the first motor driving chip A4988, the second motor driving chip A4988 and the third motor driving chip A4988 respectively. Then, the three motors 202 in the three motor slots 211 in the lower frame 12 respectively drive the belt 205 to rotate to control the up and down movement of the protrusion 209, thereby driving the moving block 207 to move up and down, so that the touch head 103 of the touch mechanism slides along the sliding path set in advance in the PC host computer 6, that is, slides along the path from the sliding starting point to the sliding turning point and then to the sliding end point, thereby realizing the sliding pressure test of the touch screen during the sliding process. After the system starts working, the interface of the PC host computer 6 will also jump to the same interface as the OLED display screen. At the same time, the PC host computer 6 will automatically upload data to the cloud storage during the system's operation, including the click time, click pressure value and click times in the click mode, the sliding time, sliding pressure value and sliding times in the sliding mode, and the abnormal pictures. ;

[0055] Step 7: Each time the system completes a pressure test, the camera module 5 captures the current interface of the display module 4, and the control module 2 determines whether the pressure applied to the touch screen during each pressure test exceeds the set pressure threshold, that is, the corresponding Figure 8In step S7, the pressure value exceeds the set pressure threshold. Specifically, in step S7, when the system completes a pressure test each time, the industrial camera will capture a picture of the current interface of the OLED display screen, and send the captured picture information to the PC host computer 6 through the second serial interface; in addition, the pressure sensor 102 will feedback the pressure value detected during each click pressure test or sliding pressure test in step S6 to the control chip ATMEGA2560, and after judgment by the control chip ATMEGA2560, it will be fed back to the PC host computer 6 through the first serial interface. If the judgment result fed back to the PC host computer 6 is that the pressure value detected by the pressure sensor 102 exceeds the set pressure threshold and the excess is greater than 0.1 Newton, the PC host computer 6 will control the system to suspend operation to prevent excessive pressure from damaging the system and the touch screen, and will also send a text message from the cloud to the mobile phone to remind the operator that the pressure value tested at this time exceeds the set pressure threshold, that is, enter step S71. If the judgment result fed back to the PC host computer 6 is that the pressure value detected by the pressure sensor 102 exceeds the set pressure threshold but the excess is not greater than 0.1 Newton, or the judgment result fed back to the PC host computer 6 is that the pressure value detected by the pressure sensor 102 does not exceed the set pressure threshold, then enter step S72.

[0056] Step 8: The PC host computer 6 determines whether the picture captured once on the current interface of the display screen module 4 when each pressure test is completed is an abnormal picture, that is, the corresponding Figure 8 In step S72 of the picture comparison, check whether there is an abnormality. Specifically, in step S72, the PC host computer 6 will segment the picture captured after starting the work according to the position coordinates of the framed part in the original reference, and save the segmented picture at the same time. Then the PC host computer 6 will compare the segmented picture with the framed part in the original reference to determine whether there are abnormal pictures in these segmented pictures. If so, the picture before segmentation corresponding to the segmented picture is regarded as an abnormal picture and enter step S721. At this time, the PC host computer 6 will send a text message from the cloud to the mobile phone to remind the operator that an abnormal picture has been generated at this time and enter step S6; otherwise, the picture before segmentation corresponding to the segmented picture is not regarded as an abnormal picture and enters step S6. The standard for judging abnormal images is that the aforementioned segmented and saved images are compared one by one with the framed parts in the original reference image. When the similarity between the segmented images and the framed parts in the original reference image is less than 90% (which can be set according to specific needs), the image before segmentation corresponding to the segmented image is regarded as an abnormal image, otherwise the image before segmentation corresponding to the segmented image in this comparison is not regarded as an abnormal image. The comparison includes the brightness and color depth of the image, and different brightness and color depth of the image represent different data.

[0057] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned manner. For example, the control module 2 in this embodiment adopts the control chip ATMEGA2560, but the control module 2 in the present invention is not limited to the control chip ATMEGA2560, but can adopt the control chip with the same function currently on the market. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above-mentioned concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A system for implementing touch screen pressure testing based on 3D modeling, characterized in that: The invention comprises a pressure tester (1), a control module (2), a motor drive module (3), a display screen module (4), a camera module (5), a PC host computer (6), a power supply circuit (7), a first serial interface (8) and a second serial interface (9), wherein the pressure tester (1) is connected to the input end of the control module (2); the pressure tester (1) is connected to the output end of the motor drive module (3); the output end of the power supply circuit (7) is respectively connected to the input end of the control module (2) and the input end of the motor drive module (3); the output end of the control module (2) is respectively connected to the input end of the motor drive module (3) and the input end of the display screen module (4); the PC host computer (6) is connected to the control module (2) via the first serial interface (8); and the PC host computer (6) is connected to the camera module (5) via the second serial interface (9).

2. A system for implementing touch screen pressure testing based on 3D modeling as claimed in claim 1, characterized in that: The PC host computer (6) communicates with the control module (2) via the first serial interface (8); the PC host computer (6) communicates with the camera module (5) via the second serial interface (9); and the motor drive module (3) and the display screen module (4) are controlled by the control module (2).

3. A pressure testing machine (1) for use in a system as claimed in any one of claims 1 to 2, characterized in that: The invention comprises a touch mechanism, a lifting mechanism, a connecting mechanism, a supporting mechanism, an upper frame (11) and a lower frame (12); the touch mechanism is connected to the lifting mechanism via the connecting mechanism; the lifting mechanism is connected to the upper frame (11) and the lower frame (12) respectively; and the supporting mechanism is arranged above the lower frame (12).

4. A pressure testing machine (1) as claimed in claim 3, characterized in that: The touch mechanism comprises a touch block (101) and a pressure sensor (102); the touch block (101) is connected to the connection mechanism; one end of the touch block (101) is connected to a touch head (103); and the pressure sensor (102) is arranged on the inner side of the touch head (103).

5. A pressure testing machine (1) as claimed in claim 4, characterized in that: The output end of the pressure sensor (102) is connected to the input end of the control module (2).

6. A pressure testing machine (1) as claimed in claim 4, characterized in that: The lifting mechanism comprises a guide rail (201), a motor (202) and a second pulley (203); the motor (202) is installed in the lower frame (12); a first pulley (204) is installed on the motor shaft of the motor (202); the second pulley (203) is connected to the upper frame (11); the first pulley (204) and the second pulley (203) are respectively covered with a belt (205); one end of the guide rail (201) is connected to the upper frame (11), and the other end of the guide rail (201) is connected to the lower frame (12); the guide rail (201) is provided with a guide rail groove (206), the belt (205) is connected to a moving block (207), one side of the moving block (207) is provided with the pulley (208), and the pulley (208) is embedded in the guide rail groove (206).

7. A pressure testing machine (1) as claimed in claim 6, characterized in that: The connection mechanism comprises a connection rod (301), one end of the connection rod (301) is connected to the touch block (101), and the other end of the connection rod (301) is movably connected to a fixed rod (302); the fixed rod (302) is connected to the moving block (207).

8. A pressure testing machine (1) as claimed in claim 3, characterized in that: The support mechanism comprises a support rod (401), one end of the support rod (401) is connected to the lower frame (12), and the other end of the support rod (401) is sleeved with a bushing (402).

9. A pressure testing machine (1) as claimed in claim 8, characterized in that: The lower frame (12) and the moving block (207) are respectively provided with line channels (501).

10. A method for implementing touch screen pressure testing based on 3D modeling as claimed in any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step 1: Modeling and displaying the activity space of the touch mechanism and the shape of the touch screen through a PC host computer (6); Step 2: Setting the system's operating mode and related parameters through the PC host computer (6); Step 3, using the camera module (5) to capture a picture of the current interface of the display screen module (4); Step 4: select the captured image of the current interface of the display screen module (5) through the PC host computer (6); Step 5: Select the system working mode through the PC host computer (6); Step 6, control the system through the PC host computer (6) to start working; Step 7: Each time the system completes a pressure test, the camera module (5) captures the current interface of the display screen module (4), and the control module (2) determines whether the pressure applied to the touch screen during each pressure test exceeds a set pressure threshold; Step eight, judging by the PC host computer (6) whether the picture captured once on the current interface of the display screen module (4) each time a pressure test is completed is an abnormal picture.

Images