Video card voltage detection and LED real-time prompt circuit
By designing the graphics card voltage detection and LED real-time prompt circuit, the real-time monitoring and intuitive prompt of the graphics card working voltage is achieved using MCU chips and LED lamp beads, which solves the problem that the voltage status information cannot be quickly provided when the graphics card voltage is abnormal in the existing technology, and improves the inspection efficiency.
Patent Information
- Application Number
- CN202421447424.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-24
AI Technical Summary
The existing graphics card voltage monitoring method cannot provide voltage status information quickly and effectively when the graphics card voltage is abnormal, making it difficult for users to check the specific reasons when the computer cannot be turned on normally.
A graphics card voltage detection and LED real-time prompt circuit is designed, including an MCU chip, a voltage adjustment circuit, an LED prompt circuit and a graphics card reset detection circuit. The MCU chip is used to monitor the various working voltages of the graphics card in real time, and use LED lamp beads to make intuitive prompts.
Real-time monitoring and intuitive prompts of the graphics card working voltage are realized, helping users quickly determine whether the computer cannot start normally due to abnormal graphics card voltage, significantly improving the inspection efficiency.
Smart Images
Figure CN222801143U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of computer hardware design, in particular to a graphics card voltage detection and LED real-time prompting circuit. Background Art
[0002] In the prior art, graphics card voltage monitoring is usually achieved with the help of sensors and monitoring chips on the graphics card. For example, some high-end graphics cards already have built-in voltage monitoring functions, which can read the voltage data of the GPU core, video memory and other key components in real time through the hardware interface or in conjunction with related drivers, and display it to the user in the system monitoring software. The traditional graphics card voltage monitoring method mainly relies on the real-time display of the software interface, but in some special cases, such as the display does not display completely unresponsive, and the graphics card voltage abnormality causes the system to be unable to start, etc., this method often cannot quickly and effectively provide voltage status information. For users, when the computer cannot start normally, it becomes extremely difficult to troubleshoot the specific cause. Summary of the invention
[0003] The utility model provides a graphics card voltage detection and LED real-time prompt circuit, aiming to solve the problem that the existing graphics card voltage abnormality display mode is not intuitive enough and it becomes difficult to find out the specific cause.
[0004] The utility model provides a graphics card voltage detection and LED real-time prompt circuit, comprising an MCU chip, a voltage adjustment circuit, an LED prompt circuit and a graphics card reset detection circuit, wherein the input end of the voltage adjustment circuit is connected to each working voltage of the graphics card, the output end of the voltage adjustment circuit is connected to the MCU chip, the LED prompt circuit is connected to the MCU chip, the LED prompt circuit comprises a plurality of LED lamp beads, one LED lamp bead corresponds to the working voltage of one graphics card, the input end of the graphics card reset detection circuit is connected to the reset signal of the mainboard, and the output end of the graphics card reset detection circuit is connected to the MCU chip.
[0005] As a further improvement of the utility model, the voltage adjustment circuit includes resistors R61330, R61331, R61332, R61333, R61338 and R61339, one end of the resistor R61330 is connected to a 12V voltage, the other end of the resistor R61330 is connected to one end of the resistor R61331, the other end of the resistor R61331 is grounded, the 4 pins of the MCU chip are connected to the other end of the resistor R61330, and the resistor R61331 is grounded. One end of resistor R61332 is connected to a 5V voltage, the other end of resistor R61332 is connected to one end of resistor R61333, the other end of resistor R61333 is grounded, pin 5 of the MCU chip is connected to the other end of resistor R61332, one end of resistor R61338 is connected to a 3.3V voltage, the other end of resistor R61338 is connected to one end of resistor R61339, the other end of resistor R61339 is grounded, and pin 8 of the MCU chip is connected to the other end of resistor R61338.
[0006] As a further improvement of the utility model, the voltage adjustment circuit also includes resistor R61334, resistor R61335, resistor R61336 and resistor R61337, one end of resistor R61334 is connected to pin 6 of the MCU chip, one end of resistor R61335 is connected to pin 15 of the MCU chip, one end of resistor R61336 is connected to pin 7 of the MCU chip, one end of resistor R61337 is connected to pin 14 of the MCU chip, and the other end of resistor R61334, the other end of resistor R61335, the other end of resistor R61336 and the other end of resistor R61337 are all connected to the 3.3V power supply of the graphics card connected to the motherboard through PCIE.
[0007] As a further improvement of the present utility model, pin 2 of the MCU chip is connected to the drain of the field effect tube Q10853B, the source of the field effect tube Q10853B is connected to one end of the resistor R61227, the other end of the resistor R61227 is connected to the I2CB_SDA_Q port of the GPU host computer, pin 1 of the MCU chip is connected to the drain of the field effect tube Q10854A, the source of the field effect tube Q10854A is connected to one end of the resistor R61229, and the other end of the resistor R61229 is connected to the I2CB_SCL_Q port of the GPU host computer.
[0008] As a further improvement of the present invention, the 3.3V power supply of the motherboard connected to the graphics card through PCIE is respectively connected to one end of resistor R61265 and one end of resistor R61266, the other end of resistor R61265 is connected to pin 2 of the MCU chip, and the other end of resistor R61266 is connected to pin 1 of the MCU chip.
[0009] As a further improvement of the utility model, the LED prompt circuit includes a field effect tube Q10858, a transistor QG1 and several LED lamp beads. The source of the field effect tube Q10858 is connected to a 3.3V power supply, the gate of the field effect tube Q10858 is connected to the collector of the transistor QG1, the emitter of the transistor QG1 is grounded, the base of the transistor QG1 is connected to pin 9 of the MCU chip, pin 1 of the LED lamp bead is connected to pin 23 of the MCU chip, pin 2 of the LED lamp bead is connected to the LED power supply, pin 4 of the LED lamp bead is grounded, and pin 3 of the LED lamp bead is connected to pin 1 of the next LED lamp bead.
[0010] As a further improvement of the present invention, the graphics card reset detection circuit includes an AND gate U512, pins 1 and 2 of the AND gate U512 are connected to the reset signal of the motherboard, pin 4 of the AND gate U512 is connected to pin 24 of the MCU chip, pin 3 of the AND gate U512 is grounded, and pin 5 of the AND gate U512 is connected to the power supply.
[0011] As a further improvement of the present invention, pin 10 of the MCU chip is respectively connected to one end of capacitor C62501 and one end of capacitor C62505, and the other end of capacitor C62501 and the other end of capacitor C62505 are grounded.
[0012] The beneficial effects of the utility model are: by monitoring each input signal through the MCU, each working voltage of the graphics card is monitored in real time, and through the LED lamp bead display, it can quickly determine at these critical moments whether the computer cannot start normally due to abnormal graphics card voltage, which provides great convenience and efficiency for users. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a connection relationship diagram between various circuits of the utility model;
[0014] Figure 2 It is a specific circuit connection diagram of the MCU chip of the utility model;
[0015] Figure 3 It is a specific circuit connection diagram of the graphics card reset detection circuit of the utility model;
[0016] Figure 4 It is a specific circuit connection diagram of the voltage regulating circuit of the utility model;
[0017] Figure 5 It is a specific circuit connection diagram of the LED prompt circuit of the utility model;
[0018] Figure 6 It is a schematic diagram of the data transmission mode of the LED of the utility model. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.
[0020] like Figure 1-5 As shown, the utility model provides a graphics card voltage detection and LED real-time prompt circuit, including an MCU chip, a voltage adjustment circuit, an LED prompt circuit and a graphics card reset detection circuit, the input end of the voltage adjustment circuit is connected to each working voltage of the graphics card, the output end of the voltage adjustment circuit is connected to the MCU chip, the LED prompt circuit is connected to the MCU chip, the LED prompt circuit includes a plurality of LED lamp beads, one LED lamp bead corresponds to the working voltage of one graphics card, the input end of the graphics card reset detection circuit is connected to the reset signal of the motherboard, and the output end of the graphics card reset detection circuit is connected to the MCU chip.
[0021] As an embodiment of the utility model, the voltage adjustment circuit includes a resistor R61330, a resistor R61331, a resistor R61332, a resistor R61333, a resistor R61338 and a resistor R61339, one end of the resistor R61330 is connected to a 12V voltage, the other end of the resistor R61330 is connected to one end of the resistor R61331, the other end of the resistor R61331 is grounded, the 4 pins of the MCU chip are connected to the other end of the resistor R61330, and the resistor R61331 is grounded. One end of resistor R61332 is connected to a 5V voltage, the other end of resistor R61332 is connected to one end of resistor R61333, the other end of resistor R61333 is grounded, pin 5 of the MCU chip is connected to the other end of resistor R61332, one end of resistor R61338 is connected to a 3.3V voltage, the other end of resistor R61338 is connected to one end of resistor R61339, the other end of resistor R61339 is grounded, and pin 8 of the MCU chip is connected to the other end of resistor R61338.
[0022] As another embodiment of the utility model, the voltage adjustment circuit also includes resistor R61334, resistor R61335, resistor R61336 and resistor R61337, one end of resistor R61334 is connected to pin 6 of the MCU chip, one end of resistor R61335 is connected to pin 15 of the MCU chip, one end of resistor R61336 is connected to pin 7 of the MCU chip, one end of resistor R61337 is connected to pin 14 of the MCU chip, and the other end of resistor R61334, the other end of resistor R61335, the other end of resistor R61336 and the other end of resistor R61337 are all connected to the 3.3V power supply of the graphics card connected to the motherboard through PCIE.
[0023] As another embodiment of the utility model, pin 2 of the MCU chip is connected to the drain of the field effect tube Q10853B, the source of the field effect tube Q10853B is connected to one end of the resistor R61227, the other end of the resistor R61227 is connected to the I2CB_SDA_Q port of the GPU host computer, pin 1 of the MCU chip is connected to the drain of the field effect tube Q10854A, the source of the field effect tube Q10854A is connected to one end of the resistor R61229, and the other end of the resistor R61229 is connected to the I2CB_SCL_Q port of the GPU host computer.
[0024] As another embodiment of the utility model, the motherboard is connected to the 3.3V power supply of the graphics card through PCIE and is respectively connected to one end of resistor R61265 and one end of resistor R61266, the other end of resistor R61265 is connected to pin 2 of the MCU chip, and the other end of resistor R61266 is connected to pin 1 of the MCU chip.
[0025] As another embodiment of the utility model, the LED prompt circuit includes a field effect tube Q10858, a transistor QG1 and several LED lamp beads, the source of the field effect tube Q10858 is connected to a 3.3V power supply, the gate of the field effect tube Q10858 is connected to the collector of the transistor QG1, the emitter of the transistor QG1 is grounded, the base of the transistor QG1 is connected to pin 9 of the MCU chip, pin 1 of the LED lamp bead is connected to pin 23 of the MCU chip, pin 2 of the LED lamp bead is connected to the LED power supply, pin 4 of the LED lamp bead is grounded, and pin 3 of the LED lamp bead is connected to pin 1 of the next LED lamp bead.
[0026] As another embodiment of the utility model, the graphics card reset detection circuit includes an AND gate U512, pins 1 and 2 of the AND gate U512 are connected to the reset signal of the motherboard, pin 4 of the AND gate U512 is connected to pin 24 of the MCU chip, pin 3 of the AND gate U512 is grounded, and pin 5 of the AND gate U512 is connected to the power supply.
[0027] As another embodiment of the utility model, pin 10 of the MCU chip is respectively connected to one end of capacitor C62501 and one end of capacitor C62505, and the other end of capacitor C62501 and the other end of capacitor C62505 are grounded.
[0028] The utility model provides a graphics card voltage detection and LED real-time prompt circuit, which adopts the HT32F52231 MCU chip as the control core, combines the WS2812B LED lamp beads to achieve real-time voltage monitoring and intuitive prompts, and uses the 3.3V standby voltage of the motherboard as the power supply.
[0029] like Figure 2 As shown, the MCU chip model is HT32F52231, and the VDD of the MCU chip uses 3V3_AUX_CON (the motherboard is connected to the standby 3.3V of the graphics card through PCIE). The 3.3V power supply is always powered when the ATX power supply is turned on, so the MCU chip can also work when the computer is not turned on. The 1st and 2nd pins of the MCU chip are connected to the SMBUS interface of the GPU host computer. Through the I2C protocol communication, the MCU chip firmware can be upgraded under Windows. The 4th, 5th, 6th, 7th, 8th, 14th, and 15th pins of the MCU chip are connected to the various signals that the graphics card needs to monitor. The 23rd pin is connected to the LED for data transmission. The 24th pin is connected to the reset signal PEX_RST_BUF sent by the motherboard to the graphics card through PCIE. The LED power supply LED_VCC is connected to 3V3_AUX_CON through a timing control circuit. When the MCU chip is initialized, a high level signal is sent through the 9th pin to turn on the MOS switch Q10858, thereby connecting LED_VCC and 3V3_AUX_CON to each other.
[0030] like Figure 3 As shown, the reset signal PEX_RST of PCIE is filtered into a 3.3V signal PEX_RST_BUF through the AND gate U512. This signal is a reset signal sent to the graphics card after the motherboard is initialized. This signal can be used to determine whether the motherboard has completed initialization.
[0031] like Figure 4 As shown, since the working voltages of the graphics card are different, in order to adapt to the I / O level specification of the MCU chip, the voltage signal higher than VDD is adjusted to 3.3V by voltage division, and the voltage signal lower than VDD is detected by the PGOOD signal of the power IC, and PGOOD is pulled up to 3.3V, so as not to affect the working voltage of the graphics card. Each signal is connected to the MCU chip to detect each working voltage.
[0032] like Figure 5As shown, the LED lamp bead model uses WS2812B, which is a colorful LED lamp bead. It integrates RGB three-color LED and control circuit in one. Each lamp bead contains an independent driver chip, which can realize the individual addressing and control of each lamp bead, that is, it supports point-by-point control of color and brightness. WS2812B adopts a special single-line return-to-zero code communication method (also known as NEOPIXEL protocol), which only requires one signal line to complete the serial communication of data, greatly simplifying the wiring difficulty. Each lamp bead can receive 24 bits of data (8 bits of red, 8 bits of green, and 8 bits of blue), and automatically adjust its own color and brightness according to the received data. In the embodiment of the utility model, seven LED lamp beads are set. The DIN end receives the data DATA transmitted from the MCU chip. The first 24-bit data sent is extracted by the first LED1 and sent to the data latch inside LED1. The remaining data is shaped and amplified by the internal shaping processing circuit and then forwarded to the next cascaded LED2 through the DO port. After each transmission of an LED, the signal is reduced by 24 bits. LED adopts automatic shaping and forwarding technology, so that the number of LED cascades is not limited by signal transmission, but only by signal transmission speed requirements. Figure 6 As shown, D1 is the data sent by the MCU chip, and D2, D3, and D4 are the data automatically shaped and forwarded by the cascade circuit.
[0033] In general, the system monitors each input signal through the MCU chip, and monitors each working voltage of the graphics card in real time. The MCU chip is connected to the LED lamp bead, and each signal corresponds to an LED lamp bead through program control. When a certain voltage is normal, the corresponding LED lamp bead lights up in red, otherwise it will not light up or light up in red, so as to achieve intuitive prompts. Through program settings, when the graphics card works normally, the MCU chip can be set to turn off the LED after a certain period of time to make the system enter the energy-saving mode, and set edge triggers for each signal input PIN. When the input signal undergoes a high-low level conversion, an interrupt is triggered to wake up the MCU chip.
[0034] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.
Claims
1. A graphics card voltage detection and LED real-time prompt circuit, characterized in that: It includes an MCU chip, a voltage adjustment circuit, an LED prompt circuit and a graphics card reset detection circuit. The input end of the voltage adjustment circuit is connected to the various working voltages of the graphics card, the output end of the voltage adjustment circuit is connected to the MCU chip, the LED prompt circuit is connected to the MCU chip, the LED prompt circuit includes a plurality of LED lamp beads, one LED lamp bead corresponds to the working voltage of one graphics card, the input end of the graphics card reset detection circuit is connected to the reset signal of the motherboard, and the output end of the graphics card reset detection circuit is connected to the MCU chip.
2. The graphics card voltage detection and LED real-time prompt circuit according to claim 1, characterized in that: The voltage adjustment circuit includes resistors R61330, R61331, R61332, R61333, R61338 and R61339. One end of resistor R61330 is connected to a 12V voltage, the other end of resistor R61330 is connected to one end of resistor R61331, the other end of resistor R61331 is grounded, the 4 pins of the MCU chip are connected to the other end of resistor R61330, and one end of resistor R61332 is connected to Input 5V voltage, the other end of resistor R61332 is connected to one end of resistor R61333, the other end of resistor R61333 is grounded, pin 5 of the MCU chip is connected to the other end of resistor R61332, one end of resistor R61338 is connected to 3.3V voltage, the other end of resistor R61338 is connected to one end of resistor R61339, the other end of resistor R61339 is grounded, and pin 8 of the MCU chip is connected to the other end of resistor R61338.
3. The graphics card voltage detection and LED real-time prompt circuit according to claim 1, characterized in that: The voltage adjustment circuit also includes resistor R61334, resistor R61335, resistor R61336 and resistor R61337, one end of resistor R61334 is connected to pin 6 of the MCU chip, one end of resistor R61335 is connected to pin 15 of the MCU chip, one end of resistor R61336 is connected to pin 7 of the MCU chip, one end of resistor R61337 is connected to pin 14 of the MCU chip, and the other ends of resistor R61334, resistor R61335, resistor R61336 and resistor R61337 are all connected to the 3.3V power supply of the graphics card connected to the motherboard through PCIE.
4. The graphics card voltage detection and LED real-time prompt circuit according to claim 1, characterized in that: Pin 2 of the MCU chip is connected to the drain of the field effect tube Q10853B, the source of the field effect tube Q10853B is connected to one end of the resistor R61227, the other end of the resistor R61227 is connected to the I2CB_SDA_Q port of the GPU host computer, pin 1 of the MCU chip is connected to the drain of the field effect tube Q10854A, the source of the field effect tube Q10854A is connected to one end of the resistor R61229, and the other end of the resistor R61229 is connected to the I2CB_SCL_Q port of the GPU host computer.
5. The graphics card voltage detection and LED real-time prompt circuit according to claim 4, characterized in that: The 3.3V power supply of the motherboard connected to the graphics card through PCIE is connected to one end of resistor R61265 and one end of resistor R61266 respectively, the other end of resistor R61265 is connected to pin 2 of the MCU chip, and the other end of resistor R61266 is connected to pin 1 of the MCU chip.
6. The graphics card voltage detection and LED real-time prompt circuit according to claim 1, characterized in that: The LED prompt circuit includes a field effect tube Q10858, a transistor QG1 and several LED lamp beads. The source of the field effect tube Q10858 is connected to a 3.3V power supply, the gate of the field effect tube Q10858 is connected to the collector of the transistor QG1, the emitter of the transistor QG1 is grounded, the base of the transistor QG1 is connected to pin 9 of the MCU chip, pin 1 of the LED lamp bead is connected to pin 23 of the MCU chip, pin 2 of the LED lamp bead is connected to the LED power supply, pin 4 of the LED lamp bead is grounded, and pin 3 of the LED lamp bead is connected to pin 1 of the next LED lamp bead.
7. The graphics card voltage detection and LED real-time prompt circuit according to claim 1, characterized in that: The graphics card reset detection circuit includes an AND gate U512, pins 1 and 2 of the AND gate U512 are connected to the reset signal of the motherboard, pin 4 of the AND gate U512 is connected to pin 24 of the MCU chip, pin 3 of the AND gate U512 is grounded, and pin 5 of the AND gate U512 is connected to the power supply.
8. The graphics card voltage detection and LED real-time prompt circuit according to claim 1, characterized in that: Pin 10 of the MCU chip is connected to one end of capacitor C62501 and one end of capacitor C62505 respectively, and the other end of capacitor C62501 and the other end of capacitor C62505 are grounded.