All-in-one machine display control device based on Loongson 2K

Abstract

The invention relates to an all-in-one machine display and control device based on Loongson 2K, and belongs to the technical field of integrated display and control. The device is mainly composed of a display control processing module, a liquid crystal display module, a DC / DC power supply module, an external interface and the like. The display control processing module takes a Loongson 2K1000 as a processor core, the liquid crystal display module comprises a liquid crystal panel and a touch control assembly, the DC / DC power supply module provides a 12VDC power supply for the device, and the external interfaces comprise abundant interfaces such as a gigabit Ethernet interface, an RS485 serial port interface, a digital quantity DI interface, a digital quantity DO interface and the like. The device adopts 100% localization, and has the characteristics of small size, convenience, quick startup and capability of quickly responding to external data change.

Description

Technical Field

[0001] The present invention belongs to the technical field of integrated display and control, and in particular relates to an all-in-one display and control device based on Loongson 2K. Background Art

[0002] In recent years, integrated display and control technology has developed rapidly, increasingly moving towards miniaturization, intelligence, and multi-bus compatibility. The integration of multiple functions, including LCD display, touch control, bus communication, data and status processing, and custom user interface design, has become an urgent issue. Summary of the Invention

[0003] (1) Technical issues to be resolved

[0004] In order to solve the problems of existing integrated display and control technology, specifically the problem that the integrated display and control technology is relatively backward and cannot meet system requirements, an all-in-one display and control device is designed.

[0005] (2) Technical solution

[0006] In order to solve the above technical problems, the present invention provides a design method for an all-in-one display and control device based on Loongson 2K, which includes a display and control processing module, a liquid crystal display module, a DC / DC power supply module and an external interface; the display and control processing module is designed with Loongson 2K1000 as a processor, and is used to realize graphics generation, RS485 communication and Ethernet communication functions; the liquid crystal display module is used to complete video screen display and touch control functions by communicating with the display and control processing module, the liquid crystal display module includes a liquid crystal panel and a touch component, the DC / DC power supply module is used to provide 12V DC power for the display and control processing module, and realize power filtering, protection and isolation functions, and the external interface includes the Gigabit Ethernet, RS485 serial port, digital DI and DO interfaces of the display and control processing module.

[0007] The present invention also provides an all-in-one display and control device designed using the method.

[0008] The present invention also provides a method for interconnecting multiple devices, configuring the RS485 serial port into a bus mode to achieve RS485 bus interconnection of multiple integrated display and control devices.

[0009] The present invention also provides a method for operating the device, which comprises the following steps:

[0010] Step 1. Power on the device for self-test;

[0011] Step 2. After the self-test is normal, the display control processing module pushes the LVDS signal and touch USB signal to the LCD display module;

[0012] Step 3. The upper computer interface is displayed on the LCD panel of the LCD module;

[0013] Step 4. The host computer interface displays the data changes of external DI, RS485 and Gigabit Ethernet communications in real time;

[0014] Step 5. Send DO signals to the outside according to the data changes displayed on the host computer interface.

[0015] (3) Beneficial effects

[0016] This invention provides an all-in-one display and control device based on the Loongson 2K processor. The device primarily consists of a display and control processing module, a liquid crystal display module, a DC / DC power supply module, and external interfaces. The display and control processing module utilizes the Loongson 2K1000 processor core. The liquid crystal display module includes an LCD panel and touch control components. The DC / DC power supply module provides 12VDC power to the device. External interfaces include Gigabit Ethernet, RS485 serial ports, and digital input and output (DI / DO) interfaces. This device is 100% domestically produced and features a compact and portable design, fast startup, and rapid response to external data changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a functional block diagram of the components of an apparatus according to an embodiment of the present invention;

[0018] Figure 2 This is a principle block diagram of the display and control processing module in the device according to an embodiment of the present invention;

[0019] Figure 3 4 is a flowchart of the working process of the device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below with reference to the accompanying drawings and examples.

[0021] like Figure 1As shown, the present invention provides an all-in-one display and control device based on Loongson 2K, which is mainly composed of a display and control processing module, a liquid crystal display module, a DC / DC power supply module and an external interface. The display and control processing module uses Loongson 2K1000 as the processor core and is used to realize functions such as graphics generation, RS485 communication and Ethernet communication; the liquid crystal display module is used to complete the video screen display and touch control functions by communicating with the display and control processing module. The liquid crystal display module includes a liquid crystal panel and a touch component. The DC / DC power supply module is used to provide 12V DC power to the display and control processing module to realize functions such as power filtering, protection and isolation. The external interface includes a rich interface including Gigabit Ethernet, RS485 serial port, digital DI and DO. In conjunction with the host computer software, the interface can quickly display the data obtained through the communication interface. In particular, the RS485 serial port can be configured into bus mode to realize RS485 bus interconnection of multiple devices.

[0022] like Figure 2 As shown, the display and control processing module primarily consists of the Loongson 2K1000, FPGA K7, and interface circuits. The FPGA K7 converts the Loongson 2K1000's RGB video signals into LVDS signals, which are then sent to the LCD panel of the LCD module for display. Simultaneously, the touch USB signals are sent to the touch control component of the LCD module. The FPGA K7's GPIO outputs DI and DO signals through an optocoupler. The FPGA K7 communicates with the Loongson 2K1000 via the UART / LIO bus, and the mounted SM2323 transceiver enables RS485 signal output. Furthermore, the Loongson 2K1000's GMAC signals are output as Gigabit Ethernet signals via the network PHY.

[0023] The liquid crystal display module is used to complete the video screen display and touch control functions, can receive the LVDS signal output by the display and control processing module, has a multi-point capacitive touch function, outputs touch information through USB, and has anti-electromagnetic shielding and anti-glare and anti-reflection functions.

[0024] The DC / DC power supply module is used to generate a 12V DC working power supply after the 24V DC power input of the system undergoes fuse protection, power filtering, anti-reverse connection protection, and isolation conversion. The power supply has a rated power of 50W and a conversion efficiency of 91%.

[0025] The device has a miniaturized design and is compact and portable, and is a 7-inch integrated display and control device.

[0026] Combine Figure 3 , the working process of the device is as follows:

[0027] Step 1. Power on the device for self-test;

[0028] Step 2. After the self-test is normal, the display control processing module pushes the LVDS signal and touch USB signal to the LCD display module;

[0029] Step 3. The upper computer interface is displayed on the LCD panel of the LCD module;

[0030] Step 4. The host computer interface displays the data changes of external DI, RS485 and Gigabit Ethernet communications in real time;

[0031] Step 5. Send DO signals to the outside according to the data changes displayed on the host computer interface.

[0032] Compared with the existing technology, the device of the present invention is 100% domestically produced and is not affected by the ban; it is small and portable and can realize multiple functions such as liquid crystal display, touch control, bus communication, data and status processing, and user interface custom design.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A design method for an all-in-one display and control device based on Loongson 2K, characterized in that: The device includes a display and control processing module, a liquid crystal display module, a DC / DC power supply module and an external interface; the display and control processing module is designed with the Loongson 2K1000 as the processor and is used to realize graphics generation, RS485 communication and Ethernet communication functions; the liquid crystal display module is used to complete video screen display and touch control functions by communicating with the display and control processing module. The liquid crystal display module includes a liquid crystal panel and a touch component. The DC / DC power supply module is used to provide 12V DC power for the display and control processing module and realize power filtering, protection and isolation functions. The external interface includes the gigabit Ethernet, RS485 serial port, digital DI and DO interfaces of the display and control processing module.

2. The method according to claim 1, wherein The display and control processing module includes Loongson 2K1000, FPGA K7 and optocoupler; FPGA K7 is used to convert the video RGB signal of Loongson 2K1000 into a video LVDS signal, and send it to the LCD panel of the liquid crystal display module for display. At the same time, the touch USB signal is sent to the touch component of the liquid crystal display module; the GPIO of FPGAK7 outputs DI and DO signals to the outside after passing through the optocoupler; FPGA K7 is also mounted with an SM2323 transceiver, and FPGAK7 communicates with Loongson 2K1000 through the UART / LIO bus. The mounted SM2323 transceiver is used to realize the external output of RS485 signals; in addition, the GMAC interface of Loongson 2K1000 outputs Gigabit Ethernet signals to the outside through the network PHY.

3. The method according to claim 1, wherein The liquid crystal display module can receive the LVDS signal output by the display control processing module, has a multi-point capacitive touch function, outputs touch information through a USB, and has anti-electromagnetic shielding and anti-glare and anti-reflection functions.

4. The method according to claim 1, wherein The DC / DC power supply module is specifically used to generate a 12V DC working power supply after the input 24VDC power supply undergoes fuse protection, power supply filtering, anti-reverse connection protection, and isolation conversion.

5. The method according to claim 1, wherein The device is a 7-inch integrated display and control device.

6. An all-in-one display and control device designed using the method according to claim 5.

7. The device according to claim 6, characterized in that The device is used in the field of integrated display and control technology.

8. A method for interconnecting multiple devices according to claim 6, characterized in that: The RS485 serial port is configured to be in bus mode to realize RS485 bus interconnection of multiple all-in-one display and control devices.

9. A method for operating the device according to claim 6.

10. The method according to claim 9, wherein The following steps are involved: Step 1. Power on the device for self-test; Step 2. After the self-test is normal, the display control processing module pushes the LVDS signal and touch USB signal to the LCD display module; Step 3. The upper computer interface is displayed on the LCD panel of the LCD module; Step 4. The host computer interface displays the data changes of external DI, RS485 and Gigabit Ethernet communications in real time; Step 5. Send DO signals to the outside according to the data changes displayed on the host computer interface.

Images