Pressure test system of touch screen and vehicle touch screen

Abstract

The utility model discloses a pressure test system for a touch screen. The pressure test system comprises a display screen to be tested, a continuous click device, a main control unit and a man-machine visualization module, a touch sensor and a display screen processor are arranged in the display screen to be tested; the continuous click device is used for automatically and continuously touching a set position or a set range of the display screen to be tested; the touch sensor is used for collecting touch signals, the output end of the touch sensor is connected to the display screen processor, and the display screen processor collects touch position information of the display screen to be tested through the touch sensor; the display screen processor is connected with the main control unit and is used for sending the collected information of each touch to the main control unit; and the main control unit is connected to the man-machine visualization module. The touch screen testing device has the advantages that manual testing is not needed for testing the touch screen, the screen can be automatically clicked, results can be recorded, testing is fast, the service life and durability can be tested, and quality detection, sampling inspection and the like are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of automobile electronics, in particular to a testing system for an automobile display screen. Background Art

[0002] With the development of automotive electronics, there are more and more display screens in cars, and users have more and more demands for on-board display screens. At present, the production, sales and use of display screens all need to be tested. Since the environment in which the vehicle is located is relatively harsh, the test of the display screen is also more reliable. The test of the traditional display screen generally tests whether the screen can display normally and whether the screen touch screen function is in the field. For example, a touch screen detection method and electronic product with patent application number 201210184405.6, when testing the touch screen, touch and slide along the diagonal direction on the touch screen, and receive the coordinate value fed back by the touch screen. If all the X-axis and Y-axis values ​​are detected, the touch screen is judged to be normal. The present invention adopts a simple diagonal sliding touch operation, and determines whether each sensing area of ​​the touch screen is normal by detecting whether all the X-axis and Y-axis values ​​on the touch screen are traversed. Compared with the traditional scheme, the touch screen detection method is simple to operate, has a fast test speed, and has a high accuracy rate of the test result. The method is applied to various electronic products that need to be equipped with touch screens, which can significantly improve the production and testing efficiency of electronic products while reducing the failure rate of factory products.

[0003] Although the above patent realizes the detection of touch screen, it does not take into account the pressure test and service life test of the touch screen. The touch screen in the automotive field requires a rapid durability test of the vehicle, so the test with Xi'an technology cannot meet the needs of vehicle-mounted display screens. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a pressure testing system for a touch screen, which is suitable for automated testing of touch screens in the field of vehicle-mounted display screens, has more accurate test results, and can also meet requirements such as life testing.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a pressure testing system for a touch screen, comprising a display screen to be tested, a continuous clicker, a main control unit, and a human-machine visualization module; the display screen to be tested is equipped with a touch sensor and a display screen processor; the continuous clicker is used to automatically and continuously touch the set position or set range of the display screen to be tested; the touch sensor is used to collect touch signals, and its output end is connected to the display screen processor, and the display screen processor collects the position information of the touch of the display screen to be tested through the touch sensor; the display screen processor is connected to the main control unit, and is used to send the collected information of each touch to the main control unit; the main control unit is connected to the human-machine visualization module.

[0006] The continuous clicker comprises a telescopic mechanism and a capacitive pen arranged at the front end of the telescopic mechanism for touching the display screen.

[0007] The telescopic mechanism is an electric telescopic mechanism, which is controlled by a microprocessor MCU; the input end of the microprocessor MCU is connected to a human-machine key, and the parameters of the electric telescopic mechanism are entered through the human-machine key.

[0008] The human-machine visualization module includes a display screen and / or a printer, which is used to display or print the touch coordinate information of the touch screen received by the main control unit.

[0009] The main control unit is connected to a storage unit, and the storage unit is used to store the touch coordinate information received by the main control unit from the display screen processor.

[0010] The microprocessor is connected to a timing chip, and the timing chip is used to perform statistical timing on the working time of the electric telescopic mechanism.

[0011] A vehicle touch screen is tested by using the touch screen pressure testing system.

[0012] The advantages of the utility model are: the test of the touch screen does not require manual testing, the screen can be automatically clicked and the results can be recorded, the test is fast, and the life and durability can be tested, which is convenient for quality inspection, random inspection, etc. At the same time, the test time can be tested as needed, and the automatic test can be performed according to the set time; the test results are convenient for engineers to judge, and the test data can be displayed, stored, printed, etc., which is convenient for engineers to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0014] Figure 1 This is a schematic diagram of the test system of the utility model;

[0015] Figure 2 This is the principle diagram of the continuous clicker of the utility model. DETAILED DESCRIPTION

[0016] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0017] The main purpose of this application is to test the touch screen of the vehicle display screen. The test adopts an automated method to conduct fast and accurate testing, and can be continuously tested to achieve the test of the durability of the touch screen. The specific composition and principle of the test system are described below:

[0018] Touch screen is the abbreviation of touch display screen, which can get feedback signal after the user touches it with his finger. Generally, the touch screen includes an upper display screen component, a lower touch sensor with touch perception and a touch screen processor. The touch sensor is used to collect touch signals at different positions on the touch screen. When the user touches each position, the touch sensor collects the touch signal at that position and feeds it back to the processor. The processor executes the touch function operation according to the touch position information collected by the touch sensor. This test system utilizes this basic function of the display screen and directly reads the touched position information in the processor of the display screen. Based on the comparison between the actual touch position and the collected touch position information, it can directly determine whether the touch screen is faulty, thereby realizing the test control of the touch screen.

[0019] like Figure 1 , 2 As shown, a pressure testing system for a touch screen includes a display screen to be tested, a continuous clicker, a main control unit, and a human-machine visualization module;

[0020] The display screen to be tested has a built-in touch sensor and a display screen processor. The touch sensor is used to collect the position information of the touch screen being clicked, and its output end is connected to the display screen processor. The display screen processor is used to receive the touched display screen position information collected by the touch sensor.

[0021] The continuous clicker is used to automatically and continuously touch the set position or set range of the display screen to be tested; the continuous clicker is used to generate a touch signal when a person touches the display screen, and the continuous clicker continuously clicks the touch screen to give the touch screen a touch signal.

[0022] The touch sensor is used to collect touch signals, and its output end is connected to the display screen processor. The display screen processor collects the touched position information of the display screen to be tested through the touch sensor; the display screen processor is connected to the main control unit, and is used to send the collected information of each touch to the main control unit; the main control unit is connected to the human-machine visualization module, and the touch position signal of the touch screen received by the display screen processor is sent to the main control unit through communication with the main control unit, and the main control unit displays it through the human-machine visualization module, thereby realizing the test of touch.

[0023] The main control unit is implemented by a processor with data processing and control functions, and is generally developed and implemented using a single-chip microcomputer. The single-chip microcomputer used is an STM32 series single-chip microcomputer. At the same time, the communication between the single-chip microcomputer and the touch screen uses a connector that conforms to the touch screen communication protocol or a dedicated connector to realize the communication connection between the single-chip microcomputer and the display processor.

[0024] The human-machine visualization module is mainly used to display the touch position information, which is convenient for the inspection engineer to view. The human-machine visualization module includes a display screen and / or a printer, which is used to display or print the touch coordinate information of the touch screen received by the main control unit. The touch information is actually the coordinate information of the touch position in the area where the display screen is located. When the position of the continuous clicker is fixed, the click position is fixed, and the coordinate information collected by the touch is also fixed. Based on this, it can be judged whether the touch is normal and the life and durability test of the touch. The test of this application is particularly suitable for durability testing, and can achieve the purpose of long-term testing of the touch screen.

[0025] At the same time, the main control unit is connected to the storage unit, which is used to store the touch coordinate information sent by the display screen processor received by the main control unit. The storage module can use a dedicated removable memory or a TF card and other devices, mainly to store the coordinate data during the test process, so that subsequent test engineers can retrieve and view relevant data, and facilitate the analysis of subsequent test results.

[0026] like Figure 2 As shown, it is a schematic diagram of the principle of the continuous clicker in this embodiment. The main purpose of the continuous clicker is to click the display screen to be tested. To click it continuously, it is necessary to simulate the finger to click the display screen. Therefore, the continuous clicker of this application is designed to include a telescopic mechanism and a capacitive pen arranged at the front end of the telescopic mechanism for touching the display screen. The telescopic mechanism can simulate the user's continuous and repeated clicks, and the capacitive pen is because the current touch screens are all capacitive screens. Therefore, in order to better simulate the user's touch, a capacitive pen is used to realize touch simulation, and the touch screen can be clicked by controlling the touch pen through the telescopic mechanism.

[0027] like Figure 2 As shown, in this embodiment, the telescopic mechanism is an electric telescopic mechanism, which is controlled by a microprocessor MCU; the input end of the microprocessor MCU is connected to the human-machine key, and the parameters of the electric telescopic mechanism are entered through the human-machine key, where the parameters can be the telescopic rod working frequency, time, etc. The human-machine key can be a 4*4 keyboard, and the microprocessor MCU is developed and implemented using a 51 series single-chip microcomputer. The 51 single-chip microcomputer drives the extension and retraction of the electric cylinder, and the electric cylinder has a cylinder body and a telescopic rod, wherein a capacitive pen is provided at the end of the telescopic rod, so that after the 51 single-chip microcomputer drives the telescopic rod of the electric cylinder to extend and retract, it will drive the capacitive pen at the end of the telescopic rod to repeatedly and continuously click the touch screen, and the touch sensor collects the touch position information and obtains it through the main control unit for the purpose of displaying and storing the coordinate value.

[0028] Furthermore, the microprocessor is connected to a timing chip, which is used to perform statistical timing on the working time of the electric telescopic mechanism, so as to facilitate setting the test time according to actual needs during the test, stop the movement of the telescopic mechanism after the time is reached, stop the test, and complete the test of the set time.

[0029] This embodiment further provides a vehicle touch screen, which uses the pressure testing system for the touch screen in the above embodiment to perform a touch test.

[0030] When testing the test system of this embodiment, the display screen to be tested should first be fixed on a fixed test station to prevent movement; the continuous clicker should be fixed on the front of the touch screen, and at the same time ensure that when the telescopic rod is extended, the stylus at its end just touches the display screen; after fixing the display screen and the continuous clicker, the main control unit and the display screen processor are connected by cables to establish a communication circuit between the two, and then the power supply is started so that each module can be powered and work, and then the test time is set to start the continuous clicker. After the test is started, the touch position information will be summarized in the main control unit and displayed by the human-computer interaction module and stored in the memory.

[0031] At the same time, this solution can also be expanded to violent testing and pressure testing of the touch screen. It only needs to adjust the position between the continuous clicker and the display screen. This patent solution is suitable for pressure testing of the touch screen. It can automatically touch and click the display screen without additional manual operation, and generate the coordinate value of each click. It can be observed whether there are problems such as touch failure, which can facilitate pressure testing, ignore environmental factors, and reduce personnel investment. This patented technology is to solve the touch pressure test of the display screen, continuously violently click the display screen, and generate the coordinate value of each click. By observing the coordinate value, it can be judged whether there is touch failure. Use a continuous clicker to connect the display screen, and perform a continuous click test on the display screen. The click range can be pre-set, and then the touch coordinates of the corresponding display screen feedback are obtained through the main control unit. The continuous click artifact is placed in a determined range and clicks continuously. At the same time, the touch coordinates of the corresponding display screen feedback are obtained through the main control unit and the coordinates can be stored, such as generating a txt document, recording the coordinate value of each click. If it exceeds the click range, an error is returned; it can also be judged whether there are problems such as touch failure based on the generated coordinate value data.

[0032] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A pressure testing system for a touch screen, characterized in that: It includes a display screen to be tested, a continuous clicker, a main control unit, and a human-machine visualization module; the display screen to be tested has a built-in touch sensor and a display screen processor; the continuous clicker is used to automatically and continuously touch the set position or set range of the display screen to be tested; the touch sensor is used to collect touch signals, and its output end is connected to the display screen processor, and the display screen processor collects the touched position information of the display screen to be tested through the touch sensor; The display screen processor is connected to the main control unit and is used to send the collected information of each touch to the main control unit; the main control unit is connected to the human-machine visualization module.

2. A pressure testing system for a touch screen as claimed in claim 1, characterized in that: The continuous clicker comprises a telescopic mechanism and a capacitive pen arranged at the front end of the telescopic mechanism for touching the display screen.

3. A pressure testing system for a touch screen as claimed in claim 2, characterized in that: The telescopic mechanism is an electric telescopic mechanism, which is controlled by a microprocessor MCU; the input end of the microprocessor MCU is connected to a human-machine key, and the parameters of the electric telescopic mechanism are entered through the human-machine key.

4. A pressure testing system for a touch screen as described in any one of claims 1 to 3, characterized in that: The human-machine visualization module includes a display screen and / or a printer, which is used to display or print the touch coordinate information of the touch screen received by the main control unit.

5. A pressure testing system for a touch screen as described in any one of claims 1 to 3, characterized in that: The main control unit is connected to a storage unit, and the storage unit is used to store the touch coordinate information received by the main control unit and sent by the display screen processor.

6. A pressure testing system for a touch screen as claimed in claim 3, characterized in that: The microprocessor is connected to a timing chip, and the timing chip is used to perform statistical timing on the working time of the electric telescopic mechanism.

7. A touch screen for a vehicle, characterized in that: The vehicle touch screen is tested using the pressure testing system for the touch screen as described in any one of claims 1 to 6.

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