Special test equipment for portable LCD (liquid crystal display) keys

Abstract

The utility model provides a special test device for LCD display screen keys. The special test device comprises a panel assembly, a power supply assembly and a display screen, wherein the panel assembly comprises a USB interface, a voltage and current monitoring module, a short-circuit protection module, a power supply switch, an LCD display screen key mounting interface and a state indicator lamp; the bottom plate assembly comprises an SPI adapter module, a program downloading module and a USB expansion module; the panel assembly is connected with the bottom plate assembly through a bi-pass stud, and the panel assembly and the bottom plate assembly are installed in the protection box through a lining layer for installing the protection box after being connected. According to the utility model, the problem of how to test the keys of the LCD screen portably and stably is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial automation of aircraft, ships, vehicles and the like, and in particular to a special testing device for keys of a portable LCD display screen. Background Art

[0002] With the development of electronic technology, display screen buttons have been used more and more widely. Compared with traditional mechanical buttons, the display content of traditional mechanical buttons is fixed and cannot be changed. After the button is pressed, the processing result of the button information cannot be presented on the button, and the interactive effect is poor. Display screen buttons can not only display clear pictures, but also be customized according to the user's display needs and reprogram the display screen. At the same time, compared with OLED display screen buttons, LCD display screen buttons have the advantages of large display size and high brightness. Therefore, LCD display screen buttons are increasingly favored by users in electronic devices.

[0003] Accordingly, testing of LCD display buttons has also become an important topic. The interface of commonly used LCD display buttons is generally SPI interface, which has a high communication rate. Cross-linking testing using DuPont wires or wires often leads to unstable communication due to signal integrity issues, greatly affecting the efficiency of the test.

[0004] Therefore, how to test LCD display buttons in a portable and stable manner has become one of the key factors in whether LCD display buttons can be reliably produced in large quantities. Utility Model Content

[0005] The technical problem to be solved by the utility model is: how to test the keys of the LCD display screen in a portable and stable manner.

[0006] In order to solve the above technical problems, the technical solution of the utility model is to provide a portable LCD display screen button dedicated testing equipment, including: a panel assembly, a bottom plate assembly connected to the panel assembly, and a safety protection box for placing the panel assembly and the bottom plate assembly;

[0007] The panel assembly includes: a USB interface for connecting to a host to implement LCD display button testing; a voltage and current monitoring module for monitoring the voltage and current status of the LCD display button and displaying the voltage and current when the LCD display button is working; a short-circuit protection module for automatically shutting off the working power supply of the LCD display button when a short circuit occurs on the LCD display button; an LCD display button installation interface connected to the LCD display button; a power switch for controlling the shutoff of the working power supply connected to the LCD display button when the voltage and current monitoring module monitors that the voltage and current exceed the preset normal value; and a panel mounting plate provided with a patch pad, the position of the patch pad corresponds to the position of the voltage and current monitoring module and the power switch; the USB interface, the short-circuit protection module, the status indicator light and the LCD display button installation interface are welded to the panel mounting plate; the voltage and current monitoring module and the power switch are welded to the corresponding patch pads and fixed with solid glue;

[0008] The base plate assembly includes: an SPI adapter module, a program download module, a USB expansion module and a base plate mounting plate; the base plate mounting plate is marked with silk screen mounting positions and silk screen mounting directions corresponding to the SPI adapter module, the program download module and the USB expansion module, and corresponding wiring pads are arranged at the silk screen mounting positions; the SPI adapter module, the program download module and the USB expansion module are connected to the corresponding wiring pads arranged at the silk screen mounting positions by aviation wire welding and solid glue fixation;

[0009] During the test, the LCD display button installation interface is connected to the LCD display button, and the LCD display button is connected to the USB interface through the voltage and current monitoring module, the short-circuit protection module, and the USB expansion module through the SPI adapter module and the program download module, and then connected to the USB interface to test the LCD display button.

[0010] Preferably, the dedicated testing equipment also includes a status indicator light for quickly judging the working status of the LCD display screen buttons.

[0011] Preferably, the voltage and current monitoring module and the power switch are fixedly connected to the panel mounting plate via buckles and nuts.

[0012] Preferably, the LCD display screen button installation interface is connected to the LCD display screen button via a dedicated reed jack.

[0013] Preferably, the safety protection box is provided with a lining layer, and the panel assembly and the bottom plate assembly are placed inside the lining layer.

[0014] Preferably, the panel assembly and the base plate assembly are connected to each other via a plurality of double-through studs and a plurality of three-combination screws.

[0015] Preferably, the panel mounting board and the base mounting board are both single-layer printed circuit boards.

[0016] The technical solution of the utility model proposes a special test device for LCD display screen buttons, including: a panel component including a USB interface, a voltage and current monitoring module, a short circuit protection module, a power switch, an LCD display screen button installation interface and a status indicator light; a bottom plate component including an SPI adapter module, a program download module and a USB expansion module; the panel component is connected to the bottom plate component through a double-pass stud, and the panel component and the bottom plate component are connected and installed inside the protective box through the lining of the protective box. The utility model solves the problem of how to test LCD display screen buttons in a portable and stable manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A cross-linking block diagram provided for an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the layout of the panel components provided in the embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the layout of the base plate assembly provided in an embodiment of the utility model;

[0020] Figure 4 A schematic diagram of a panel assembly after opening the cover provided by an embodiment of the utility model;

[0021] Figure 5 An overall schematic diagram provided for an embodiment of the utility model. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0023] The utility model embodiment provides a portable LCD display screen button dedicated testing equipment, the internal cross-linking such as Figure 1 As shown, the special testing equipment includes three parts: a panel assembly 1, a base assembly 2 and a safety protection box 3.

[0024] The panel assembly 1 includes: a panel mounting plate 10, a USB interface 101, a voltage and current monitoring module 102, a short circuit protection module 103, a power switch 104, an LCD display button mounting interface 105 and a status indicator light 106. Figure 2As shown, the USB interface 101 , the voltage and current monitoring module 102 , the short circuit protection module 103 , the power switch 104 , the LCD display button installation interface 105 and the status indicator light 106 are all installed on the panel installation plate 10 .

[0025] Among them, the USB interface 101, the short circuit protection module 103, the status indicator light 106 and the LCD display button installation interface 105 are installed on the panel mounting plate 10 by welding, and the voltage and current monitoring module 102 and the power switch 104 are installed on the panel mounting plate 10 by means of buckles and nuts. According to the position and wiring of the voltage and current monitoring module 102 and the power switch 104, the pads of the patch are designed on the panel mounting plate 10, and the voltage and current monitoring module 102 and the panel mounting plate 10 are welded by wires nearby and fixed with solid glue to reduce the wiring length as much as possible and improve signal integrity.

[0026] The voltage and current monitoring module 102 is used to monitor the voltage and current status of the LCD display screen button being tested, and display the voltage and current when the LCD display screen button is working. When the voltage and current monitoring module 102 monitors that the voltage or current is abnormal, the working power of the LCD display screen button connected to the LCD display screen button installation interface 105 can be turned off in time through the power switch 104.

[0027] The short circuit protection module 103 is used to automatically shut down the working power supply of the LCD display screen buttons when a short circuit occurs on the LCD display screen buttons, so as to avoid damage to the dedicated test equipment or the test host, thereby achieving effective protection when a short circuit occurs on the LCD display screen buttons.

[0028] The status indicator lights 106 include a power status indicator light, a button status indicator light, a program download status indicator light, and a communication status indicator light. During testing, the status indicator lights can be used to quickly determine the working status of the buttons on the LCD display.

[0029] The baseboard assembly includes a baseboard mounting plate 20, an SPI adapter module 201, a program download module 202 and a USB expansion module 203. Figure 3 As shown, the SPI adapter module 201, the program download module 202 and the USB expansion module 203 are fixedly mounted on the bottom plate mounting plate 20 by solid glue. The bottom plate 20 is marked with the installation position and installation direction of the SPI adapter module 201, the program download module 202 and the USB expansion module 203 by silk screen printing, and a corresponding wiring pad is designed at each installation position. The SPI adapter module 201, the program download module 202 and the USB expansion module 203 are fixed by solid glue after being welded by aviation wires, so as to reduce the wiring length as much as possible and avoid the communication instability caused by the wiring.

[0030] The SPI adapter module 201 and the program download module 202 are connected to the USB interface 101 of the panel assembly 1 via the USB extension module 203. During testing, all test functions can be realized by simply connecting to the host via a matching USB extension cable.

[0031] The USB interface 101 is connected to the LCD display button installation interface 105 through the voltage and current monitoring module 102 and the short circuit protection module 103. The LCD display button installation interface 105 is connected to the USB expansion module 203 through the SPI adapter module 201 and the program download module 202, and then connected to the USB interface 101. The interfaces of the modules inside the device are connected by printed circuit board routing and aviation wire welding, which is stable and reliable.

[0032] The LCD display screen button installation interface 105 is connected to the LCD display screen button through a dedicated reed jack, which can ensure a stable and reliable connection during testing.

[0033] After the panel assembly 1 and the base plate assembly 2 are installed and wired, the panel assembly 1 and the base plate assembly 2 are installed and connected through multiple double-pass studs and multiple three-combination screws. Then, after the panel assembly 1 and the base plate assembly 2 are connected, they are installed inside the lining of the safety protection box 3. Through the retractability of the lining and the safety protection box 3, the special test equipment has a beautiful appearance and is easy to test.

[0034] The panel mounting plate 10 and the bottom mounting plate 20 are both single-layer printed circuit boards. Except for the interfaces and elements necessary for testing, all components and wiring of the panel assembly 1 are at the bottom of the panel mounting plate 10. After being installed in the safety protection box 3, all components and wiring except the status indicator light 106 are inside the box, effectively avoiding the effects of misoperation by the tester or short circuit caused by the panel falling into the metal medium. On the one hand, the use of printed circuit boards reduces the material loss and time loss caused by the processing technology of aluminum plates or organic glass panels. On the other hand, some modules can be connected by printed circuit board wiring, which minimizes the impact of wiring on communication quality.

[0035] The embodiment of the utility model combines the SPI adapter module and the program download module through a USB expansion module, and is supplemented by other display control modules to form a special test device for LCD display screen buttons.

[0036] The LCD display button installation interface of the utility model embodiment is connected to the LCD display button through a special reed jack, has a fixed position, is easy to plug and unplug, and has a stable and reliable installation, avoiding the inconvenient wiring and unstable communication when using DuPont wires or fixtures for connection in traditional testing.

[0037] After the LCD display buttons are connected to the embodiment of the utility model, all test functions can be realized by connecting to the host via USB. The power supply of the dedicated test equipment and the LCD display buttons is provided by the USB interface of the host, and no external power supply or other auxiliary test equipment is required.

Claims

1. A portable LCD display button test device, characterized in that: include: A panel assembly, a base plate assembly connected to the panel assembly, and a safety protection box for placing the panel assembly and the base plate assembly; The panel assembly includes: a USB interface for connecting to a host to implement LCD display button testing; a voltage and current monitoring module for monitoring the voltage and current status of the LCD display button and displaying the voltage and current when the LCD display button is working; a short-circuit protection module for automatically shutting off the working power supply of the LCD display button when a short circuit occurs on the LCD display button; an LCD display button installation interface connected to the LCD display button; a power switch for controlling the shutoff of the working power supply connected to the LCD display button when the voltage and current monitoring module monitors that the voltage and current exceed the preset normal value; and a panel mounting plate provided with a patch pad, the position of the patch pad corresponds to the position of the voltage and current monitoring module and the power switch; the USB interface, the short-circuit protection module, the status indicator light and the LCD display button installation interface are welded to the panel mounting plate; the voltage and current monitoring module and the power switch are welded to the corresponding patch pads and fixed with solid glue; The base plate assembly includes: an SPI adapter module, a program download module, a USB expansion module and a base plate mounting plate; the base plate mounting plate is marked with silk screen mounting positions and silk screen mounting directions corresponding to the SPI adapter module, the program download module and the USB expansion module, and corresponding wiring pads are arranged at the silk screen mounting positions; the SPI adapter module, the program download module and the USB expansion module are connected to the corresponding wiring pads arranged at the silk screen mounting positions by aviation wire welding and solid glue fixation; During the test, the LCD display button installation interface is connected to the LCD display button, and the LCD display button is connected to the USB interface through the voltage and current monitoring module, the short-circuit protection module, and the USB expansion module through the SPI adapter module and the program download module, and then connected to the USB interface to test the LCD display button.

2. A portable LCD display screen keypad dedicated testing device as claimed in claim 1, characterized in that: The dedicated testing equipment also includes a status indicator light for quickly judging the working status of the buttons on the LCD display screen.

3. A portable LCD display screen button dedicated testing device as claimed in claim 1, characterized in that: The voltage and current monitoring module and the power switch are fixedly connected to the panel mounting plate via buckles and nuts.

4. A portable LCD display screen button dedicated testing device as claimed in claim 1, characterized in that: The LCD display screen button installation interface is connected to the LCD display screen button via a dedicated reed jack.

5. A portable LCD display screen button dedicated testing device as claimed in claim 1, characterized in that: The safety protection box is provided with a lining layer, and the panel assembly and the bottom plate assembly are arranged inside the lining layer.

6. A portable LCD display screen button dedicated testing device as claimed in claim 1, characterized in that: The panel assembly and the bottom plate assembly are connected to each other through a plurality of double-through studs and a plurality of three-combination screws.

7. A portable LCD display screen keypad dedicated testing device as claimed in claim 1, characterized in that: The panel mounting plate and the bottom plate mounting plate are both single-layer printed circuit boards.

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