Digital power supply monitoring circuit for PC (Personal Computer) stack
By designing a digital power monitoring circuit for PC stick, monitoring and automatically restarting the platform central processor, the problem of mini computer sticks not being able to automatically restart when power is abnormal, reducing maintenance costs and improving production efficiency.
Patent Information
- Application Number
- CN202422100171.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-28
AI Technical Summary
The mini computer stick cannot automatically restart when the power is abnormal, causing the platform system to fail to work properly, increasing maintenance costs and reducing production efficiency.
A digital power monitoring circuit for PC stick is designed, including a computer digital power circuit, a platform central processor and a processor reset circuit. The working status of the digital power circuit is monitored through the processor reset circuit, and a reset signal is sent when an abnormality is encountered to automatically restart the platform central processor.
It realizes that the computer system will automatically restart when the power supply is abnormal, reduces maintenance costs and improves production efficiency. The circuit structure is simple, easy to implement, low cost and easy to promote.
Smart Images
Figure CN222883027U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power supply monitoring and protection circuits, in particular to a digital power supply monitoring circuit for a PC stick. Background Art
[0002] With the rapid development of technology, computers are no longer limited to bulky desktops and notebooks. Portable mini computer sticks, which are only the size of a USB flash drive, can be used as a computer host. Mini computer sticks are not only small in size, but also have excellent performance, providing people with a brand new computing experience.
[0003] When the power supply of the computer stick is abnormal, the platform system will not work properly. For computer systems working remotely, technicians are required to go to the site to restart the platform system. This not only has high personnel costs, but also affects the normal operation efficiency of the platform system, making the platform system operation and maintenance costs high and the production efficiency low. Utility Model Content
[0004] In view of this, it is necessary to provide a digital power monitoring circuit for PCstick which can automatically restart the computer system and has a simple circuit structure.
[0005] A digital power monitoring circuit for a PC stick comprises a computer digital power circuit, a platform central processing unit and a processor reset circuit, wherein the output end of the computer digital power circuit is connected to the platform central processing unit and the processor reset circuit to provide working power for the platform central processing unit and the processor reset circuit; the input end of the processor reset circuit is connected to the computer digital power circuit, and the output end of the processor reset circuit is connected to the platform central processing unit; the processor reset circuit monitors the working state of the computer digital power circuit, and when detecting that the state of the computer digital power circuit is abnormal, sends a reset signal to the platform central processing unit to restart the platform central processing unit.
[0006] Preferably, the computer digital power circuit includes a digital power chip U3, a power output terminal V3P3A pin of the digital power chip U3 is connected to the platform central processing unit and the input terminal of the processor reset circuit, a GND pin of the digital power chip U3 is grounded, and a first filter capacitor C1 and a second filter capacitor C2 are connected in parallel between the power output terminal V3P3A pin and the GND pin of the digital power chip U3.
[0007] Preferably, the processor reset circuit includes a level conversion chip U1, a power input terminal VCC pin of the level conversion chip U1 is connected to the power output terminal of the computer digital power circuit, a reset output terminal RESET pin of the level conversion chip U1 is connected to the reset terminal of the platform central processing unit, and a first resistor R1 is connected between the power input terminal VCC pin and the reset output terminal RESET pin of the level conversion chip U1; and a GND pin of the level conversion chip U1 is grounded.
[0008] Preferably, the platform central processor includes a system chip U2, a working power supply VCCPIRM-3P3 pin of the system chip U2 is connected to a power output end of the digital power chip U3, a system reset SYS-RESET pin of the system chip U2 is connected to a reset output end of the level conversion chip U1, and a GND pin of the system chip U2 is grounded.
[0009] Preferably, the level conversion chip U1 adopts a microprocessor reset circuit UM803RS, and the system chip U2 adopts an Intel X86 platform central processor X86_SOC system.
[0010] In the above-mentioned digital power monitoring circuit for PC stick, the computer digital power circuit provides working power for the platform central processor and the processor reset circuit. The processor reset circuit monitors the working state of the computer digital power circuit. When the computer digital power circuit is abnormal, the processor reset circuit sends a low-level reset signal to the platform central processor to restart the platform central processor. The computer restart is ensured to work without manual restart of calculation on site, which greatly reduces the calculation maintenance cost and improves production efficiency. The circuit structure of the utility model is simple, easy to implement, low-cost and easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a circuit structure diagram of a digital power monitoring circuit for a PC stick according to an embodiment of the utility model.
[0012] Figure 2 It is a flowchart of the circuit operation of the digital power monitoring circuit for PC stick according to an embodiment of the utility model. DETAILED DESCRIPTION
[0013] The present invention will be described in detail below with reference to specific embodiments and accompanying drawings.
[0014] See also Figure 1, showing a digital power monitoring circuit for PC stick, including a computer digital power circuit, a platform central processing unit and a processor reset circuit, wherein the output end of the computer digital power circuit is connected to the platform central processing unit and the processor reset circuit to provide working power for the platform central processing unit and the processor reset circuit; the input end of the processor reset circuit is connected to the computer digital power circuit, and the output end of the processor reset circuit is connected to the platform central processing unit; the processor reset circuit monitors the working state of the computer digital power circuit, and when detecting that the state of the computer digital power circuit is abnormal, sends a reset signal to the platform central processing unit to restart the platform central processing unit.
[0015] Preferably, the computer digital power circuit includes a digital power chip U3, a power output terminal V3P3A pin of the digital power chip U3 is connected to the platform central processing unit and the input terminal of the processor reset circuit, a GND pin of the digital power chip U3 is grounded, and a first filter capacitor C1 and a second filter capacitor C2 are connected in parallel between the power output terminal V3P3A pin and the GND pin of the digital power chip U3.
[0016] Preferably, the processor reset circuit includes a level conversion chip U1, a power input terminal VCC pin of the level conversion chip U1 is connected to the power output terminal of the computer digital power circuit, a reset output terminal RESET pin of the level conversion chip U1 is connected to the reset terminal of the platform central processing unit, and a first resistor R1 is connected between the power input terminal VCC pin and the reset output terminal RESET pin of the level conversion chip U1; and a GND pin of the level conversion chip U1 is grounded.
[0017] Preferably, the platform central processor includes a system chip U2, a working power supply VCCPIRM-3P3 pin of the system chip U2 is connected to a power output end of the digital power chip U3, a system reset SYS-RESET pin of the system chip U2 is connected to a reset output end of the level conversion chip U1, and a GND pin of the system chip U2 is grounded.
[0018] Specifically, in this embodiment, the level conversion chip U1 adopts a microprocessor reset circuit UM803RS, and the system chip U2 adopts an Intel X86 platform central processor X86_SOC system.
[0019] The 1# pin of the level conversion chip U1 is VCC pin connected to the 1#+V3P3A of U3 of the computer digital power system, which is used to monitor the voltage of the computer digital power supply; the 2# GND of the level conversion chip U1 is connected to the ground of the power supply; the 3# RESET of the level conversion chip U1 is connected to the 3# SYS_RESET# of the X86 central processing unit.
[0020] 1#VCCPIRM_3P3 of the system chip U2 is connected to 1#+V3P3A of the digital power supply system of the U3 computer; 3#SYS_RESET of the system chip U2 is connected to 3#RESET of U1; 3#GND of the system chip U2 is connected to the ground of the power supply.
[0021] The 1#+V3P3A of the digital power chip U3 is connected to the 1#VCCPIRM_3P3 of U2, the first filter capacitor C1 is a chip ceramic capacitor 22UF_6.3V_SMC0603, and the second filter capacitor C2 is a chip ceramic capacitor 0.1UF_6.3V_SMC0603. Both capacitors play a filtering role and provide power supply for the system chip U2. At the same time, they are also connected to the 1#VCC of U1 to provide power support for the microprocessor reset circuit and serve as power supply voltage monitoring.
[0022] The power-on timing logic is as follows:
[0023] See also Figure 2 , its functional logic is: the digital power chip U3 of the computer digital power circuit supplies power to the level conversion chip U1 of the processor reset circuit, and also provides power support to the system chip U2 of the X86 central processor, and the level conversion chip U1 of the microprocessor reset circuit monitors the status of the computer digital power supply through the power provided by the computer digital power system U3. When the microcomputer digital power system is abnormal, for example, the 1#+V3P3A voltage of the computer digital power system U3 is 0 or the voltage is lower than 2.93V, the reset circuit of the microprocessor sends a low-level reset signal to 3#SYS_RESET# of the X86 central processor, and 3#SYS_RESET# of the X86 central processor receives a low-level signal, thereby resetting the x86 system.
[0024] The above is a description of the implementation process of the technical solution, which solves the problem of abnormal power outages, abnormal power failures or other factors that cause power supply abnormalities, thereby causing abnormalities in the X86 central processor. There is no need for personnel to arrive at the site for maintenance. The microprocessor monitors the status of the computer's digital power system. When an abnormality occurs in the digital power system of the device, the microcomputer is directly reset to ensure that the computer restarts and returns to normal.
[0025] In the above-mentioned digital power monitoring circuit for PC stick, the computer digital power circuit provides working power for the platform central processor and the processor reset circuit. The processor reset circuit monitors the working state of the computer digital power circuit. When the computer digital power circuit is abnormal, the processor reset circuit sends a low-level reset signal to the platform central processor to restart the platform central processor. The computer restart is ensured to work without manual restart of calculation on site, which greatly reduces the calculation maintenance cost and improves production efficiency. The circuit structure of the utility model is simple, easy to implement, low-cost and easy to promote.
[0026] It should be noted that the present invention is not limited to the above-mentioned embodiments. According to the creative spirit of the present invention, those skilled in the art may also make other changes. These changes made according to the creative spirit of the present invention should be included in the scope of protection required by the present invention.
Claims
1. A digital power monitoring circuit for a PC stick, characterized in that: It includes a computer digital power supply circuit, a platform central processing unit and a processor reset circuit. The output end of the computer digital power supply circuit is connected to the platform central processing unit and the processor reset circuit to provide working power for the platform central processing unit and the processor reset circuit; the input end of the processor reset circuit is connected to the computer digital power supply circuit, and the output end of the processor reset circuit is connected to the platform central processing unit; the processor reset circuit monitors the working state of the computer digital power supply circuit, and when it detects that the state of the computer digital power supply circuit is abnormal, sends a reset signal to the platform central processing unit to restart the platform central processing unit.
2. The digital power monitoring circuit for PC stick according to claim 1, characterized in that: The computer digital power circuit includes a digital power chip U3, a power output terminal V3P3A pin of the digital power chip U3 is connected to the platform central processing unit and the input terminal of the processor reset circuit, a GND pin of the digital power chip U3 is grounded, and a first filter capacitor C1 and a second filter capacitor C2 are connected in parallel between the power output terminal V3P3A pin and the GND pin of the digital power chip U3.
3. The digital power monitoring circuit for PC stick according to claim 2, characterized in that: The processor reset circuit includes a level conversion chip U1, a power input terminal VCC pin of the level conversion chip U1 is connected to the power output terminal of the computer digital power circuit, a reset output terminal RESET pin of the level conversion chip U1 is connected to the reset terminal of the platform central processing unit, and a first resistor R1 is connected between the power input terminal VCC pin and the reset output terminal RESET pin of the level conversion chip U1; the GND pin of the level conversion chip U1 is grounded.
4. The digital power monitoring circuit for PC stick according to claim 3, characterized in that: The platform central processor includes a system chip U2, a working power supply VCCPIRM-3P3 pin of the system chip U2 is connected to the power output end of the digital power chip U3, a system reset SYS-RESET pin of the system chip U2 is connected to the reset output end of the level conversion chip U1, and a GND pin of the system chip U2 is grounded.
5. The digital power monitoring circuit for PC stick according to claim 4, characterized in that: The level conversion chip U1 adopts a microprocessor reset circuit UM803RS, and the system chip U2 adopts an Intel X86 platform central processor X86_SOC system.