Reinforced tablet computer

Abstract

The invention relates to the technical field of computers, in particular to a reinforced tablet personal computer which comprises a shell, a display screen, a mainboard and a lithium battery, the mainboard, the display screen and the lithium battery are all arranged on the shell, a power management unit, a health monitoring unit, a Loongson LS3A5000 processor, an LS7A2000 bridge piece, two DDR memory modules and an SSD are arranged on the mainboard, the power management unit is connected with the lithium battery, and the health monitoring unit is connected with the lithium battery. The health monitoring unit is connected with the power supply management unit, the Loongson LS3A5000 processor and the LS7A2000 bridge sheet are both connected with the power supply management unit, the LS7A2000 bridge sheet is connected with the Loongson LS3A5000 processor, the reinforced tablet computer is a tablet computer designed based on the LS3A5000 processor and the LS7A2000 bridge sheet, the highest working frequency of the reinforced tablet computer reaches 2.5 GHz, and the health monitoring unit is connected with the power supply management unit. In this way, the technical problem that in the prior art, when a tablet computer is actually used, it is difficult to support the high-frequency operation requirement, and consequently complex task processing delay is remarkable is solved.

Description

Technical Field

[0001] The present invention relates to the field of computer technology, and in particular, to a ruggedized tablet computer. Background Art

[0002] With the rapid development of information processing technology, tablet computers have shown broad application prospects in multiple fields due to their portability, intuitiveness of touch operation, and low power consumption characteristics. It has extended from the consumer electronics field to professional scenarios such as industrial automation, medical inspection, and field exploration. Tablet computers have become an important form of information processing terminals.

[0003] However, in actual use, existing tablet computers are difficult to support high-frequency computing requirements, resulting in significant delays in complex task processing. Summary of the Invention

[0004] The purpose of the present invention is to provide a ruggedized tablet computer, aiming to solve the technical problem that existing tablet computers in actual use are difficult to support high-frequency computing requirements, resulting in significant delays in complex task processing.

[0005] To achieve the above object, a ruggedized tablet computer adopted by the present invention includes a housing, a display screen, a main board, and a lithium battery. The main board, the display screen, and the lithium battery are all arranged on the housing. The main board is provided with a power management unit, a health monitoring unit, a Loongson LS3A5000 processor, an LS7A2000 bridge chip, two DDR memory modules, and an SSD. The power management unit is connected to the lithium battery, the health monitoring unit is connected to the power management unit, and both the Loongson LS3A5000 processor and the LS7A2000 bridge chip are connected to the power management unit. The LS7A2000 bridge chip is connected to the Loongson LS3A5000 processor. The health monitoring unit is also connected to the UART port of the LS7A2000 bridge chip. The display screen is connected to the HDMI port and the IIC port of the LS7A2000 bridge chip. The DDR interfaces of the Loongson LS3A5000 processor and the LS7A2000 bridge chip are respectively connected to the corresponding DDR memory modules. The SSD is connected to the SATA interface of the LS7A2000 bridge chip. The SPI interface of the LS7A2000 bridge chip is connected to Flash;

[0006] The lithium battery is used to provide power input, and the lithium battery can work while charging, and the battery is charged through a USB Type-C interface;

[0007] The housing is designed and processed using magnesium alloy material.

[0008] Among them, the power management unit includes a DC-DC and a startup timing control module. The DC-DC is connected to the lithium battery, and the startup timing control module is connected to the DC-DC.

[0009] Among them, the health monitoring unit includes an MCU and a temperature sensor. The IIC interface of the MCU is connected to the lithium battery, the GPIO interface of the MCU is connected to the temperature sensor, and the MCU is also connected to the UART interface of the LS7A2000 bridge chip.

[0010] Among them, the ruggedized tablet computer further includes a power switch, which is used to control the on-off of the circuit between the lithium battery and the power management unit.

[0011] Among them, the ruggedized tablet computer further includes a fan. The fan is connected to the PWM interface of the health monitoring unit and is also connected to the power management unit.

[0012] Among them, the ruggedized tablet computer further includes expansion interfaces, and all the expansion interfaces are connected to the UART interface, GMAC interface, USB interface, and PCle interface of the LS7A2000 bridge chip.

[0013] Among them, the ruggedized tablet computer further includes an indicator light, and the indicator light is connected to the power management unit.

[0014] Among them, the MCU uses a 32-bit -M3 core, with a peak operating frequency of 108 MHz and zero wait for Flash access.

[0015] A ruggedized tablet computer according to the present invention. The ruggedized tablet computer of the present invention is a tablet computer designed based on the LS3A5000 processor + the LS7A2000 bridge chip, with a maximum operating frequency of 2.5 GHz. It is mainly used in fields such as equipment electronic delivery manuals and handheld terminals, can facilitate on-site operation by users, requires a convenient human-machine interface for use, has a certain data storage space, an externally expandable display interface, a USB interface for external mouse and keyboard, and RS232 serial ports, network ports, etc. that are convenient for program upgrade and maintenance;

[0016] And by setting the power management unit, it can provide the health management function of the computer itself, including power status, temperature status monitoring, etc. The operating system of the ruggedized tablet computer is adapted to Kirin Desktop, Loongson Desktop, and embedded operating systems to meet the usage requirements of different projects and different users in the later stage;

[0017] The main board, through the MCU, monitors in real time the charging and discharging current conditions of the lithium battery and the temperature status inside the device, and sends the monitoring results to the processor in real time through the serial port. The display screen provides a friendly human-machine interface and is connected to the main board through an FPC cable to achieve the display and human-machine interaction operations of the device. The lithium battery provides power input for the device. The lithium battery can work while charging and is charged through a USB Type-C interface. The housing is designed and processed using magnesium alloy material. Wristband buckles are provided at the four corners of the housing for installing wristbands, hand straps, neck straps, etc. In this way, the technical problem in the prior art that it is difficult for a tablet computer to support high-frequency operation requirements during actual use, resulting in significant delays in complex task processing, is solved. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is the principle block diagram of the reinforced tablet computer of the present invention.

[0020] Figure 2 It is the principle block diagram of the main board of the present invention.

[0021] Figure 3 It is the schematic diagram of the relevant configuration signal list of the LS3A5000 processor of the present invention.

[0022] Figure 4 It is the schematic diagram of the configuration memory design of the LS3A5000 processor of the present invention.

[0023] Figure 5 It is the internal structure schematic diagram of the MCU of the present invention.

[0024] Figure 6 It is the control logic block diagram of the health monitoring unit of the present invention.

[0025] 101 - Housing, 102 - Display screen, 103 - Main board, 104 - Lithium battery, 105 - Power management unit, 106 - Health monitoring unit, 107 - Loongson LS3A5000 processor, 108 - LS7A2000 bridge chip, 109 - DDR memory module, 110 - SSD, 111 - DC-DC, 112 - Startup timing control module, 113 - MCU, 114 - Temperature sensor, 115 - Power switch, 116 - Fan, 117 - Expansion interface, 118 - Indicator light. Detailed Implementation Modes

[0026] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0027] Please refer to Figures 1 to 6 , in which Figure 1 is the principle block diagram of the ruggedized tablet computer of the present invention. Figure 2 is the principle block diagram of the main board of the present invention. Figure 3 is the schematic diagram of the relevant configuration signals of the LS3A5000 processor of the present invention. Figure 4 is the schematic diagram of the configuration memory design of the LS3A5000 processor of the present invention. Figure 5 is the internal structure schematic diagram of the MCU of the present invention. Figure 6 is the control logic block diagram of the health monitoring unit of the present invention.

[0028] The present invention provides a ruggedized tablet computer, including a housing 101, a display screen 102, a main board 103, and a lithium battery 104. The main board 103, the display screen 102, and the lithium battery 104 are all arranged on the housing 101. A power management unit 105, a health monitoring unit 106, a Loongson LS3A5000 processor 107, an LS7A2000 bridge chip 108, two DDR memory modules 109, and an SSD 110 are arranged on the main board 103. The power management unit 105 is connected to the lithium battery 104. The health monitoring unit 106 is connected to the power management unit 105, and both the Loongson LS3A5000 processor 107 and the LS7A2000 bridge chip 108 are connected to the power management unit 105. The LS7A2000 bridge chip 108 is connected to the Loongson LS3A5000 processor 107. The health monitoring unit 106 is also connected to the UART port of the LS7A2000 bridge chip 108. The display screen 102 is connected to the HDMI port and the IIC port of the LS7A2000 bridge chip 108. The DDR interfaces of the Loongson LS3A5000 processor 107 and the LS7A2000 bridge chip 108 are respectively connected to the corresponding DDR memory modules 109. The SSD 110 is connected to the SATA interface of the LS7A2000 bridge chip 108. The SPI interface of the LS7A2000 bridge chip 108 is connected to Flash;

[0029] The lithium battery 104 is used to provide power input. The lithium battery 104 can work while charging, and the battery is charged through the USB TypeC interface;

[0030] The housing 101 is designed and processed using magnesium alloy material;

[0031] The power management unit 105 includes a DC-DC 111 and a startup timing control module 112. The DC-DC 111 is connected to the lithium battery 104, and the startup timing control module 112 is connected to the DC-DC 111;

[0032] The health monitoring unit 106 includes an MCU 113 and a temperature sensor 114. The IIC interface of the MCU 113 is connected to the lithium battery 104, the GPIO interface of the MCU 113 is connected to the temperature sensor 114, and the MCU 113 is also connected to the UART interface of the LS7A2000 bridge chip 108;

[0033] The ruggedized tablet computer further includes a power switch 115, which is used to control the on / off of the circuit between the lithium battery 104 and the power management unit 105.

[0034] For this specific embodiment, the ruggedized tablet computer of the present invention is a tablet computer designed based on the LS3A5000 processor + the LS7A2000 bridge chip 108. Its maximum operating frequency reaches 2.5 GHz and is mainly used in fields such as equipment electronic delivery manuals and handheld terminals. It can facilitate on-site operation by users, requires a convenient human-machine interface, has a certain data storage space, an externally expandable display interface, a USB interface for external mouse and keyboard, and RS232 serial ports and network ports for easy program upgrade and maintenance;

[0035] And by setting the power management unit 105, the health management function of the computer itself can be provided, including power status and temperature status monitoring, etc. The operating system of the ruggedized tablet computer is adapted to Kirin Desktop, Loongson Desktop, and embedded operating systems to meet the usage requirements of different projects and users in the later stage;

[0036] The main board 103, through the MCU 113, monitors in real time the charging and discharging current conditions of the lithium battery 104 and the temperature status inside the device, and sends the monitoring results to the processor in real time through the serial port. The display screen 102 provides a friendly human-machine interface and is connected to the main board 103 through an FPC cable to achieve the display and human-machine interaction operations of the device. The lithium battery 104 provides power input for the device. The lithium battery 104 can work while charging and is charged through a USB Type-C interface. The housing 101 is designed and processed using magnesium alloy material. Wristband buckles are provided at the four corners of the housing 101 for installing wristbands, hand straps, neck straps, etc. In this way, the technical problem in the prior art that the tablet computer is difficult to support high-frequency operation requirements during actual use, resulting in significant delays in complex task processing, is solved.

[0037] Among them, the ruggedized tablet computer further includes a fan 116. The fan 116 is connected to the PWM interface of the health monitoring unit 106, and the fan 116 is also connected to the power management unit 105.

[0038] For this specific embodiment, the fan 116 is equipped with PWM and can be used to control the rotation speed of the fan 116. The frequency of the PWM of the fan 116 is 23 kHz, and the duty cycle is 30 - 100%. According to the temperature inside the device and the temperature of the processor, the duty cycle of the PWM of the fan 116 is adjusted to control the rotation speed of the fan 116 in real time, further reducing the power consumption of the fan 116.

[0039] Secondly, the ruggedized tablet computer further includes an expansion interface 117. The expansion interfaces 117 are all connected to the UART interface, GMAC interface, USB interface, and PCIe interface of the LS7A2000 bridge chip 108.

[0040] For this specific embodiment, the expansion interface 117 is used to implement the external expansion function of the LS7A2000.

[0041] At the same time, the ruggedized tablet computer further includes an indicator light 118. The indicator light 118 is connected to the power management unit 105.

[0042] For this specific embodiment, the indicator light 118 is used to present different colors during the operation of the device to reflect the working state of the device.

[0043] In addition, the MCU 113 adopts a 32-bit -M3 core with a peak operating frequency of 108 MHz and zero wait for Flash access.

[0044] For this specific embodiment, the model of the MCU 113 is GD32F103C8. The MCU 113 of the GD32F103 series uses a 32-bit -M3 core with a maximum operating frequency of up to 108 MHz. The Flash access reaches zero wait state, enabling the highest efficiency. At the same time, it also provides up to 3024 kB of on-chip flash memory and up to 96 kB of SRAM, supporting enhanced I / O ports connected to two APB buses and various on-chip and off-chip peripherals. This series of MCU 113 provides up to 3 12-bit 1MSps ADCs and 10 general-purpose 16-bit timers, 1 PWM high-level timer, 2 SPI interfaces, 2 I2C interfaces, and 2 USARTs.

[0045] Using a ruggedized tablet computer of the present invention, the ruggedized tablet computer of the present invention is a tablet computer designed based on the LS3A5000 processor + the LS7A2000 bridge chip 108, with a maximum operating frequency of up to 2.5 GHz. It is mainly used in fields such as equipment electronic delivery manuals and handheld terminals, facilitating on-site operation by users. It requires a convenient human-machine interface, has a certain data storage space, an externally expandable display interface, a USB interface for connecting an external mouse and keyboard, and RS232 serial ports and network ports for easy program upgrade and maintenance;

[0046] And by setting the power management unit 105, it can provide the health management function of the computer itself, including power status and temperature status monitoring, etc. The operating system of the ruggedized tablet computer is adapted to Kirin Desktop, Loongson Desktop, and embedded operating systems to meet the usage requirements of different projects and users in the later stage;

[0047] The main board 103, through the MCU 113, real-time monitors the charging and discharging current conditions of the lithium battery 104 and the temperature status inside the device, and sends the monitoring results to the processor in real-time through the serial port. The display screen 102 provides a friendly human-machine interface and is connected to the main board 103 through an FPC cable to achieve device display and human-machine interaction operations. The lithium battery 104 provides power input for the device. The lithium battery 104 can work while charging and is charged through a USB TypeC interface. The housing 101 is designed and processed using magnesium alloy material. Wristband buckles are provided at the four corners of the housing 101 for installing wristbands, hand straps, neck straps, etc. In this way, the technical problem in the prior art that the tablet computer is difficult to support high-frequency operation requirements, resulting in significant delays in complex task processing, is solved.

[0048] The ruggedized tablet computer uses the LS3A5000 processor, with a maximum operating main frequency of 2.5 GHz. The main technical features are as follows:

[0049] 1. Integrate 4 64-bit four-issue superscalar LA464 processor cores on-chip;

[0050] 2. Peak floating-point operation capability of 160 GFLOPS @ 2.5 GHz;

[0051] 3. Integrate a 16MB split shared level-3 cache on-chip;

[0052] 4. Maintain cache coherence for multi-core and I / O DMA access through the directory protocol;

[0053] 5. Integrate 2 72-bit DDR4 controllers with ECC on-chip, supporting DDR4-3200;

[0054] 6. Integrate 2 16-bit HyperTransport controllers (hereinafter referred to as HT) on-chip, with a maximum bus frequency of 3.2 GHz;

[0055] 7. Each 16-bit HT port can be split into two 8-bit HT ports for use;

[0056] 8. Integrate 2 I2C, 1 UART, 1 SPI, and 16 GPIO interfaces on-chip;

[0057] 9. Built-in temperature sensor 114, which can monitor the chip temperature in real time.

[0058] At the same time, the present invention uses the Loongson 7A2000 bridge chip to expand the peripheral interface. The Loongson 7A2000 chip is connected to the Loongson 3 series processors through the HT high-speed bus interface, and internally integrates a GPU, DC, DDR4 video memory controller, and interfaces such as PCIE3.0, SATA3.0, USB3.0, GMAC, HDMI, I2C, UART, and GPIO, providing rich north-south bridge functions for the Loongson processor. Main features of the 7A2000 chip:

[0059] 1. 16-bit HT 3.0 interface;

[0060] 2. 3D GPU;

[0061] 3. Support dual-channel display (2 HDMI + 1 VGA);

[0062] 4. 32-bit DDR4 video memory controller;

[0063] 5. 3 x8 PCIE 3.0 interfaces; one of which can be split into 2 independent PCIE x4 interfaces;

[0064] 6. 1 x4 PCIE 3.0 interface; can be split into 4 independent PCIE x12.0 interfaces;

[0065] 7. One x4 PCIE 3.0 interface; can be split into two independent PCIE x12.0 interfaces;

[0066] 8. Four SATA 3.0;

[0067] 9. Up to four USB 3.0 and up to twelve USB2.0;

[0068] 10. One gigabit Ethernet port;

[0069] 11. HDA / I2S;

[0070] 12. RTC / HPET module;

[0071] 13. One full - function UART controller;

[0072] 14. Four CAN controllers;

[0073] 15. Six I2C controllers;

[0074] 16. One LPC controller;

[0075] 17. One SPI controller, supporting QSPI;

[0076] 18. GPIO interface;

[0077] 19. ACPI specification;

[0078] 20. Built - in temperature sensor 114;

[0079] 21. Adopting FC - BGA package.

[0080] The motherboard 103 requires memory to provide an operating environment for the computer operating system. There are two common ways to achieve this: externally plugging a memory module into the memory module interface and using memory chips.

[0081] The method of externally plugging a memory module into the memory module interface has great flexibility. The manufacturer and capacity of the memory module can be selected according to needs, and the replacement is also very convenient. However, it increases the thickness of the PCB board and is not suitable for the compact structure inside the tablet computer.

[0082] The design method of laying memory chips flat on the PCB board can minimize the internal installation size to the greatest extent. However, the capacity and model of the device memory are fixed and cannot be replaced or expanded later. The PCB Layout difficulty and complexity of the motherboard 103 increase, and strict high - speed wiring rules and line impedance need to be followed to ensure the integrity of the DDR signal.

[0083] The present invention selects the memory die method to implement the memory of the CB3981 motherboard 103. This solution plans to use 10 CXDQ3BFAM-WGs from Hefei ChangXin to implement the memory function of the processor. The main features of the CXDQ3BFAM-WG are as follows:

[0084] a) Power supply: VDD = VDDQ = 1.2V (1.14V to 1.26V); VPP = 2.5V (2.375V to 2.75V) JEDEC standard package: x16 96-ball FBGA

[0085] b) Array Configuration: 8 banks (x16) 2 groups of 4 banks

[0086] c) 8n-bit prefetch architecture

[0087] d) Burst Length (BL): 8 and 4 with Burst Chop (BC)

[0088] e) Programmable CAs Latency (CL)

[0089] f) Programmable CAs Write Latency (CWL)

[0090] g) Internal generated Vref for data inputs

[0091] h) On-Die Termination (ODT): support Nominal, Park and Dynamic ODT Differential clock and data strobe inputs (CK_t, CK_c; DoS_t, DoS_c) Interface: 1.2V Pseudo Open Drain (PoD) lo

[0092] i) Per DRAM Addressability (PDA)

[0093] j) Data Bus Inversion (DBl)

[0094] k) DataMask (DM) for write data

[0095] l) Maximum Power Saving Mode (MPSM)

[0096] m) LPASR (Low Power Auto Self - Refresh) mode is supported

[0097] n) Asynchronous reset for power - up

[0098] o) Precharge: auto precharge option for each burst access

[0099] p) Operating case temperature: - 40℃ ≤ TCase ≤ 95℃

[0100] q) Support auto - refresh and self - refresh mode

[0101] The above - disclosed is only a preferred embodiment of the present invention. Certainly, the scope of the rights of the present invention cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above - mentioned embodiment, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the invention.

Claims

1. A rugged tablet computer, characterized in that, it includes a housing, a display screen, a main board and a lithium battery. The main board, the display screen and the lithium battery are all arranged on the housing. The main board is provided with a power management unit, a health monitoring unit, a Loongson LS3A5000 processor, an LS7A2000 bridge chip, two DDR memory modules and an SSD. The power management unit is connected to the lithium battery, the health monitoring unit is connected to the power management unit, and both the Loongson LS3A5000 processor and the LS7A2000 bridge chip are connected to the power management unit. The LS7A2000 bridge chip is connected to the Loongson LS3A5000 processor. The health monitoring unit is also connected to the UART port of the LS7A2000 bridge chip. The display screen is connected to the HDMI port and IIC port of the LS7A2000 bridge chip. The DDR interfaces of the Loongson LS3A5000 processor and the LS7A2000 bridge chip are respectively connected to the corresponding DDR memory modules. The SSD is connected to the SATA interface of the LS7A2000 bridge chip. The SPI interface of the LS7A2000 bridge chip is connected to Flash; the lithium battery is used to provide power input, and the lithium battery can work while charging, and the battery is charged through a USB TypeC interface; the housing is designed and processed with magnesium alloy material.

2. The rugged tablet computer according to claim 1, characterized in that, the power management unit includes a DC-DC and a startup timing control module. The DC-DC is connected to the lithium battery, and the startup timing control module is connected to the DC-DC.

3. The rugged tablet computer according to claim 2, characterized in that, the health monitoring unit includes an MCU and a temperature sensor. The IIC interface of the MCU is connected to the lithium battery, the GPIO interface of the MCU is connected to the temperature sensor, and the MCU is also connected to the UART interface of the LS7A2000 bridge chip.

4. The rugged tablet computer according to claim 3, characterized in that, the rugged tablet computer further includes a power switch, and the power switch is used to control the on-off of the circuit between the lithium battery and the power management unit.

5. The rugged tablet computer according to claim 4, characterized in that, the rugged tablet computer further includes a fan. The fan is connected to the PWM interface of the health monitoring unit, and the fan is also connected to the power management unit.

6. The rugged tablet computer according to claim 5, characterized in that, the rugged tablet computer further includes expansion interfaces, and the expansion interfaces are all connected to the UART interface, GMAC interface, USB interface and PCle interface of the LS7A2000 bridge chip.

7. The rugged tablet computer according to claim 6, characterized in that, the rugged tablet computer further includes an indicator light, and the indicator light is connected to the power management unit.

8. The rugged tablet computer according to claim 7, characterized in that, The MCU is 32-bit core, with a peak operating frequency of 108 MHz and zero wait for Flash access.

Images