A circuit capable of realizing on-line replacement of a hard disk device without hot plug function under the condition that the whole machine is not powered off

Abstract

A circuit capable of realizing online replacement of hard disk equipment without hot plug function under the condition that the whole machine is not powered off, the novel relates to the technical field of computers, when it is necessary to cut off the power supply of the mSATA hard disk, the single-chip microcomputer outputs a low-level signal, the MOS tube I and the MOS tube II are both turned off, at this time, the power supply of the mSATA hard disk is cut off, and the user can conveniently replace the mSATA hard disk. When the mSATA hard disk is replaced, the single-chip microcomputer outputs a high-level signal, the MOS tube I and the MOS tube II are both turned on, and the mSATA hard disk is powered on. The replacement of the built-in mSATA hard disk is realized under the condition that the whole machine is not powered off, the power supply of the mSATA hard disk should adopt a primary switch, when there is a hot plug demand, the mSATA hard disk power supply switch is triggered to be turned off, and after the mSATA hard disk power supply is turned off, the hard disk will not appear abnormal, such as electric spark.

Description

Technical Field

[0001] This utility model relates to the field of computer technology, specifically to a circuit that enables online replacement of hard disk devices without hot-swapping functionality while the entire machine is powered on. Background Technology

[0002] The mSATA hard drive specification explicitly states that mSATA hard drives do not have hot-swapping capabilities. Because mSATA hard drives lack the required long and short pins for hot-swapping, hot-swapping under power can cause electrical sparks and other abnormalities, potentially damaging components and affecting the motherboard and hard drive's functionality. Therefore, a design solution is needed to allow for in-line plugging and unplugging of both power and data signals for mSATA hard drives. This would enable the replacement of internal mSATA hard drives that lack hot-swapping capabilities while maintaining uninterrupted system power supply. Summary of the Invention

[0003] In order to overcome the shortcomings of the above technologies, this utility model provides a circuit that enables mSATA hard drives without hot-swapping functionality to be replaced or removed as needed without affecting the normal operation of the entire machine, thereby achieving flexible updates of storage devices.

[0004] The technical solution adopted by this utility model to overcome its technical problem is: A circuit that enables online replacement of hard drives without hot-swapping functionality while the entire system is powered on includes: MOSFET I has its source grounded, its gate connected to the microcontroller on the motherboard via resistor I, and its drain connected to the 12V power supply via resistor II. MOSFET II has its gate connected to ground via capacitor I and to the drain of MOSFET I via resistor III. Its drain is connected to a 3V power supply, and its source is connected to the power supply interface of the mSATA hard drive.

[0005] Furthermore, the aforementioned MOSFET I is an NMOS.

[0006] Furthermore, the aforementioned MOSFET II is an NMOS.

[0007] To achieve filtering, a filter capacitor is also included. One end of the filter capacitor is connected to the source of MOSFET II, ​​and the other end is grounded.

[0008] Preferably, there are four filter capacitors, namely capacitor II, capacitor III, capacitor IV and capacitor V. One end of capacitors II, III, IV and V is connected to the source of MOSFET II, ​​and the other end is grounded.

[0009] To enhance intuitiveness, LED indicator I and LED indicator II are also included. The positive terminal of LED indicator I is connected to a 3V power supply via resistor V, and its negative terminal is connected to the drain of MOSFET I. The positive terminal of LED indicator II is connected to a 3V power supply via resistor IV, and its negative terminal is connected to the drain of MOSFET II.

[0010] Furthermore, LED indicator I is a green LED, and LED indicator II is a red LED.

[0011] The beneficial effects of this invention are as follows: When it is necessary to turn off the power supply to the mSATA hard drive, the microcontroller outputs a low-level signal, turning off both MOSFET I and MOSFET II. At this time, the power supply to the mSATA hard drive is cut off, allowing the user to easily replace it. After the mSATA hard drive is replaced, the microcontroller outputs a high-level signal, turning on both MOSFET I and MOSFET II, ​​powering on the mSATA hard drive. This achieves uninterrupted power supply for the entire system while allowing for the replacement of the built-in mSATA hard drive. The power supply to the mSATA hard drive should use a single-stage switch. When hot-swapping is required, the mSATA hard drive power supply switch is triggered to disconnect. After the power supply to the mSATA hard drive is disconnected, plugging or unplugging the hard drive will not cause electrical sparks or other abnormalities. Attached Figure Description

[0012] Figure 1 This is the circuit diagram of this utility model; Figure 2 The circuit diagram for the status indicator light; In the diagram, 1. Resistor I 2. Resistor II 3. MOSFET I 4. Resistor III 5. MOSFET II 6. Capacitor I 7. Capacitor II 8. Capacitor III 9. Capacitor IV 10. Capacitor V 11. LED indicator I 12. LED indicator II 13. Resistor IV 14. Resistor V. Detailed Implementation

[0013] The following is in conjunction with the appendix Figure 1 Appendix Figure 2 The present invention will be further described below.

[0014] A circuit enabling online replacement of hard drives without hot-swapping functionality while the entire system is powered on includes: MOSFET I 3, with its source grounded and its gate connected to a microcontroller on the motherboard via resistor I 1, and its drain connected to a 12V power supply via resistor II 2; MOSFET II 5, with its gate grounded via capacitor I 6 and connected to the drain of MOSFET I 3 via resistor III 4, its drain connected to a 3V power supply, and its source connected to the power supply interface of the mSATA hard drive. When it is necessary to turn off the power supply to the mSATA hard drive, the microcontroller outputs a low-level signal, turning off both MOSFET I 3 and MOSFET II 5, thus cutting off the power supply to the mSATA hard drive, allowing the user to easily replace it. After the mSATA hard drive is replaced, the microcontroller outputs a high-level signal, turning on both MOSFET I 3 and MOSFET II 5, powering on the mSATA hard drive. To ensure uninterrupted power supply to the entire machine, the replacement of the built-in mSATA hard drive should be achieved using a single-stage switch. When hot-swapping is required, the mSATA hard drive power supply switch should be triggered to disconnect. After the mSATA hard drive power supply is disconnected, plugging or unplugging the hard drive will not cause any abnormalities such as electrical sparks.

[0015] In one embodiment of this utility model, MOS transistor I 3 is an NMOS and MOS transistor II 5 is an NMOS.

[0016] It also includes filter capacitors, one end of which is connected to the source of MOSFET II 5, and the other end is grounded. Specifically, there are four filter capacitors: capacitor II 7, capacitor III 8, capacitor IV 9, and capacitor V 10. One end of capacitors II 7, III 8, IV 9, and V 10 is connected to the source of MOSFET II 5, and the other end is grounded. Capacitors II 7, III 8, IV 9, and V 10 are connected in parallel between the 3V power supply and the module ground. Their main task is to filter out noise on the power line and ensure a clean power supply.

[0017] In one embodiment of this utility model, LED indicator I 11 and LED indicator II 12 are also included. The positive terminal of LED indicator I 11 is connected to a 3V power supply via resistor V 14, and its negative terminal is connected to the drain of MOSFET I 3. The positive terminal of LED indicator II 12 is connected to a 3V power supply via resistor IV 13, and its negative terminal is connected to the drain of MOSFET II 5. When the microcontroller outputs a high level, LED indicator I 11 lights up, and LED indicator II 12 turns off, reminding the user that the mSATA hard drive can be hot-swapped at this time. When the microcontroller outputs a low level, LED indicator I 11 turns off, and LED indicator II 12 lights up, reminding the user that the mSATA hard drive cannot be hot-swapped at this time. More preferably, LED indicator I 11 is a green LED, and LED indicator II 12 is a red LED.

[0018] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A circuit that enables online replacement of hard disk devices without hot-swapping functionality while the entire system is powered on, characterized in that, include: MOS transistor I (3) has its source grounded, its gate connected to the microcontroller on the motherboard via resistor I (1), and its drain connected to the 12V power supply via resistor II (2). MOS transistor II (5) has its gate connected to ground via capacitor I (6) and to the drain of MOS transistor I (3) via resistor III (4). Its drain is connected to a 3V power supply, and its source is connected to the power supply interface of the mSATA hard drive.

2. The circuit according to claim 1, which enables online replacement of hard disk devices without hot-swapping functionality while the entire system is powered on, is characterized in that: The MOS transistor I (3) is an NMOS.

3. The circuit according to claim 1, which enables online replacement of hard disk devices without hot-swapping functionality while the entire system is powered on, is characterized in that: The MOS transistor II (5) is an NMOS.

4. The circuit according to claim 1, which enables online replacement of hard disk devices without hot-swapping functionality while the entire system is powered on, is characterized in that: It also includes a filter capacitor, one end of which is connected to the source of MOS transistor II (5), and the other end is grounded.

5. The circuit according to claim 4 that enables online replacement of hard disk devices without hot-swapping functionality while the entire system is powered on, characterized in that: There are four filter capacitors, namely capacitor II (7), capacitor III (8), capacitor IV (9), and capacitor V (10). One end of capacitor II (7), capacitor III (8), capacitor IV (9), and capacitor V (10) is connected to the source of MOS transistor II (5), and the other end is grounded.

6. The circuit according to claim 1, which enables online replacement of hard disk devices without hot-swapping functionality while the entire system is powered on, is characterized in that: It also includes LED indicator I (11) and LED indicator II (12). The positive terminal of LED indicator I (11) is connected to a 3V power supply via resistor V (14), and its negative terminal is connected to the drain of MOS transistor I (3). The positive terminal of LED indicator II (12) is connected to a 3V power supply via resistor IV (13), and its negative terminal is connected to the drain of MOS transistor II (5).

7. The circuit according to claim 6 that enables online replacement of hard disk devices without hot-swapping functionality while the entire system is powered on, characterized in that: The LED indicator I (11) is a green LED, and the LED indicator II (12) is a red LED.

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