Hard disk indicator light circuit and hard disk backplane

Abstract

The application provides a hard disk indicator lamp circuit, comprising: an indicator lamp unit for indicating the state of a hard disk; a control unit for detecting the state of the hard disk and outputting a control signal according to the state of the hard disk; a driving unit for receiving the control signal and lighting the indicator lamp unit according to the control signal; and a verification unit for obtaining the level value of the indicator lamp unit and determining whether the indicator lamp unit is faulty according to the level value and the control signal. The application also provides a hard disk backboard. Thus, the hard disk indicator lamp circuit and the hard disk backboard provided by the application can quickly and accurately obtain the fault state of the hard disk indicator lamp, save manpower and improve the fault detection efficiency.

Description

Technical Field

[0001] This application relates to the field of server hard disk technology, and in particular to a hard disk indicator circuit and a hard disk backplane. Background Technology

[0002] Existing hard drive backplanes can accommodate multiple hard drives and are equipped with hard drive indicator lights to indicate the working status of the hard drives. However, users need to visually inspect the hard drive indicator lights for malfunctions, which can be inconvenient for fault detection and has a low accuracy rate. Summary of the Invention

[0003] In view of the above problems, this application provides a hard disk indicator light circuit and a hard disk backplane, which can quickly and accurately obtain the fault status of the hard disk indicator light, save manpower, and improve fault detection efficiency.

[0004] In a first aspect, this application provides a hard disk indicator light circuit, comprising: an indicator light unit for indicating the status of the hard disk; a control unit for detecting the status of the hard disk and outputting a control signal according to the status of the hard disk; a drive unit electrically connected to the control unit for receiving the control signal and illuminating the indicator light unit according to the control signal; and a verification unit electrically connected to the indicator light unit and the control unit for acquiring the voltage level of the indicator light unit and determining whether the indicator light unit is faulty based on the voltage level and the control signal.

[0005] In some possible implementations, the indicator unit includes an indicator light, and the level value of the indicator unit includes the level value at one end of the indicator light. If the level value is different from the level value of the control signal, the verification unit determines that the indicator unit is faulty and outputs a fault signal.

[0006] In some possible implementations, if the hard disk is in the first state, the control unit outputs a first control signal to the drive unit; if the hard disk is in the second state, the control unit outputs a second control signal to the drive unit; and if the hard disk is in the third state, the control unit outputs a third control signal to the drive unit.

[0007] In some possible implementations, the drive unit is used to illuminate the first indicator light when a first control signal is received, to illuminate the second indicator light when a second control signal is received, and to illuminate the third indicator light when a third control signal is received.

[0008] In some possible implementations, if the voltage level at one end of the first indicator light is different from the voltage level of the first control signal, the verification unit outputs a first fault signal; if the voltage level at one end of the second indicator light is different from the voltage level of the second control signal, the verification unit outputs a second fault signal.

[0009] In some possible implementations, the hard disk indicator circuit also includes a conversion unit electrically connected to the third indicator and the verification unit. The conversion unit is used to convert the first level value at one end of the third indicator to a second level value. If the second level value is different from the level value of the control signal, the verification unit outputs a third fault signal.

[0010] In some possible implementations, the hard disk indicator circuit also includes an interaction unit electrically connected to the verification unit and the manager. The interaction unit is used to control the manager to display the fault status of the indicator light based on the fault signal.

[0011] In some possible implementations, the first output terminal of the control unit is electrically connected to the first input terminal of the drive unit and the verification unit, the second output terminal of the control unit is electrically connected to the second input terminal of the drive unit and the verification unit, the third output terminal of the control unit is electrically connected to the third input terminal of the drive unit and the verification unit, the first output terminal of the drive unit is electrically connected to the first terminal of the first indicator light, the second output terminal of the drive unit is electrically connected to the first terminal of the second indicator light, and the third output terminal of the drive unit is electrically connected to the first terminal of the third indicator light.

[0012] In some possible implementations, the second end of the first indicator light is electrically connected to the verification unit, the second end of the second indicator light is electrically connected to the verification unit, and the second end of the third indicator light is electrically connected to the verification unit.

[0013] Secondly, this application provides a hard disk backplane, including the aforementioned hard disk indicator light circuit.

[0014] Therefore, the hard drive indicator light circuit and hard drive backplane provided in this application can quickly and accurately obtain the fault status of the hard drive indicator light and display it through the display unit of the manager, saving manpower and improving fault detection efficiency. Attached Figure Description

[0015] Figure 1 An application block diagram of a hard disk indicator circuit provided in one embodiment of this application.

[0016] Figure 2 A circuit diagram of a hard disk indicator light circuit provided for one embodiment of this application.

[0017] Figure 3 A circuit diagram of a hard disk indicator light circuit provided for another embodiment of this application.

[0018] Explanation of main component symbols

[0019] Hard drive indicator light circuits 100, 200

[0020] Hard drive backplate 300

[0021] Hard Drive 101

[0022] External power supply 102

[0023] Complex Programmable Logic Devices 10, 60

[0024] Control units 20, 70

[0025] Interactive Units 30 and 80

[0026] Manager 40

[0027] Drive unit 50

[0028] First verification unit 201

[0029] Second verification unit 202

[0030] Third verification unit 203

[0031] Conversion Unit 204

[0032] First indicator light D1

[0033] Second indicator light D2

[0034] Third indicator light D3

[0035] Resistors R1-R6

[0036] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0037] In the embodiments of this application, terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or order. For example, "first application" and "second application" are used to distinguish different applications, not to describe a specific order of applications. Features specified as "first" or "second" may explicitly or implicitly include one or more of those features.

[0038] Please see Figure 1This is a schematic diagram of the structure of a hard disk backplane 300 provided in one embodiment of this application. The hard disk backplane 300 in this embodiment may include an external power supply 102 and a hard disk indicator circuit 100. The hard disk indicator circuit 100 is electrically connected to the hard disk 101 and the external power supply 102. The hard disk indicator circuit 100 includes at least one hard disk indicator light. The hard disk indicator circuit 100 can detect the status of the hard disk 101 in real time and illuminate the corresponding hard disk indicator light according to the working status of the hard disk 101. For example, the hard disk indicator circuit 100 may include a first indicator light, a second indicator light, and a third indicator light. When the hard disk 101 is inserted into the hard disk backplane 300 (i.e., when the hard disk 101 is connected to the hard disk indicator circuit 100), the hard disk indicator circuit 100 can illuminate the third indicator light, which is used to indicate the presence status of the hard disk 101. When the hard disk 101 is performing read / write operations, the hard disk indicator circuit 100 can illuminate the first indicator light, which is used to indicate the read / write status of the hard disk 101. When the hard disk 101 malfunctions, the hard disk indicator circuit 100 can illuminate the second indicator light, which is used to indicate the malfunction status of the hard disk 101.

[0039] In some embodiments, the external power supply 102 is used to power the hard disk indicator circuit 100. The hard disk 101 may include a Non-Volatile Memory Express (NVME) hard disk, a Serial Attached Small Computer System Interface (SAS) hard disk, and a Serial Advanced Technology Attachment (SATA) hard disk.

[0040] Please see Figure 2 This is a circuit diagram of a hard disk indicator light circuit 100 provided in one embodiment of this application. The hard disk indicator light circuit 100 includes a Complex Programmable Logic Device (CPLD) 10, a driver unit 50, an indicator light unit 501, a manager 40, and resistors R1-R6, wherein the indicator light unit 501 includes a first indicator light D1, a second indicator light D2, and a third indicator light D3. In this embodiment, the CPLD 10 includes a control unit 20 and an interaction unit 30, and the CPLD 10 is electrically connected to the hard disk 101.

[0041] The control unit 20 is electrically connected to the drive unit 50 and the interaction unit 30. The interaction unit 30 is electrically connected to the manager 40. The drive unit 50 is electrically connected to the first terminal of the first indicator light D1, the first terminal of the second indicator light D2, and the first terminal of the third indicator light D3. The drive unit 50 is also electrically connected to the first terminal of the resistor R3 and the first terminal of the resistor R4. The second terminal of the first indicator light D1 is electrically connected to the first terminal of the resistor R2. The second terminal of the second indicator light D2 is electrically connected to the second terminal of the resistor R1. The second terminals of the resistors R1, R2, R3, and R4 all receive a first voltage V1, which is provided by the external power supply 102.

[0042] The first terminal of the third indicator light D3 is also electrically connected to the first terminal of resistor R6, and the second terminal of the third indicator light D3 is electrically connected to the first terminal of resistor R5. The second terminals of resistor R6 and resistor R5 both receive the second voltage V2, which is provided by external power supply 102.

[0043] Specifically, the first indicator D1, the second indicator D2, and the third indicator D3 are all light-emitting diodes (LEDs). The first end of each of the three LEDs is the cathode, and the second end of each LED is the anode.

[0044] In some embodiments, the first voltage V1 can be 3.3V, the second voltage V2 can be 5V or 12V, the driving unit 50 can be a 74LVC07A integrated circuit chip, the interaction unit 30 and the manager 40 interact with each other via an I2C bus, and the interaction unit 30 and the manager 40 are electrically connected via a clock bus (SCL) and a data bus (SDA). The data bus is used to transmit data, and the clock bus is used to transmit clock signals to control the time when the interaction unit 30 and the manager 40 transmit data.

[0045] It is understood that the hard disk indicator circuit 100 can illuminate the corresponding hard disk indicator light according to the working status of the hard disk 101. Specifically, the control unit 20 can output control signals to the drive unit 50 according to the working status of the hard disk 101. The control signals may include a first control signal, a second control signal, and a third control signal. When the hard disk 101 is electrically connected to the complex programmable logic device 10, the control unit 20 can output a third control signal to the drive unit 50. The third control signal is used to control the drive unit 50 to illuminate the third indicator light D3 to indicate that the hard disk 101 is in place. When the hard disk 101 is performing a read / write operation, the control unit 20 outputs a first control signal to the drive unit 50. The first control signal is used to control the drive unit 50 to illuminate the first indicator light D1 to indicate that the hard disk 101 is in a read / write state. When the hard disk 101 malfunctions, the control unit 20 outputs a second control signal to the drive unit 50. The second control signal is used to control the drive unit 50 to illuminate the second indicator light D2 to indicate that the hard disk 101 has malfunctioned.

[0046] In some embodiments, the manager 40 is a Baseboard Management Controller (BMC). The manager 40 includes a display unit, and the hard disk indicator circuit 100 can control the display unit of the manager 40 to display the working status of the hard disk 101 according to the working status of the hard disk 101. Optionally, the complex programmable logic device 10 outputs status information to the interaction unit 30 according to the working status of the hard disk 101. The interaction unit 30 transmits the status information to the manager 40 via the I2C bus, and the manager 40 displays the working status of the hard disk on its display unit according to the status information.

[0047] If the first indicator light D1, the second indicator light D2, or the third indicator light D3 malfunctions, since they are not electrically connected to the interaction unit 30 or the manager 40, the interaction unit 30 or the manager 40 cannot know the malfunction status of the first indicator light D1, the second indicator light D2, or the third indicator light D3. Therefore, the manager 40 cannot indicate the malfunction status of the first indicator light D1, the second indicator light D2, or the third indicator light D3, and can only manually determine whether the first indicator light D1, the second indicator light D2, or the third indicator light D3 has malfunctioned. This is inefficient, has a high error rate, and cannot quickly and accurately obtain the malfunction judgment result of the first indicator light D1, the second indicator light D2, or the third indicator light D3.

[0048] Please see Figure 3 The hard disk indicator circuit 200 provided in another embodiment of this application is related to... Figure 2 The difference between the hard disk indicator circuit 100 shown in the embodiment is that: Figure 3As shown, in this embodiment, the hard disk indicator circuit 200 includes a complex programmable logic device 60, which includes a verification circuit and an interaction unit 80. The verification circuit includes a first verification unit 201, a second verification unit 202, a third verification unit 203, and a conversion unit 204.

[0049] The first input terminal of the first verification unit 201 is electrically connected to the anode of the first indicator light D1, and the second input terminal of the first verification unit 201 is electrically connected to the first output terminal of the control unit 20 and the first input terminal of the drive unit 50; the first input terminal of the second verification unit 202 is electrically connected to the anode of the second indicator light D2, and the second input terminal of the second verification unit 202 is electrically connected to the second output terminal of the control unit 20 and the second input terminal of the drive unit 50; the first input terminal of the third verification unit 203 is electrically connected to the anode of the third indicator light D3, and the second input terminal of the third verification unit 203 is electrically connected to the third output terminal of the control unit 20 and the third input terminal of the drive unit 50.

[0050] In this embodiment, the driving unit 50 adopts an open-drain (OD) output mode. That is, when the input signal of the driving unit 50 is a low-level signal, the driving unit 50 outputs a low-level signal, and when the input signal of the driving unit 50 is a high-level signal, the driving unit 50 outputs a high-impedance state. This high-impedance state can be regarded as the driving unit 50 being open-circuited. For example, when the hard disk 101 is performing a read / write operation, the control unit 70 outputs a low-level first control signal to the drive unit 50, and the drive unit 50 outputs a low-level signal to the cathode of the first indicator light D1. Since the anode potential of the first indicator light D1 is the first voltage V1, which is in a high-level state, the first indicator light D1 is turned on and illuminates, and the anode potential of the first indicator light D1 becomes low-level. When the hard disk 101 is not performing a read / write operation, the control unit 70 outputs a high-level first control signal to the drive unit 50, and the drive unit 50 outputs a high-impedance state. The cathode level of the first indicator light D1 is pulled up to the second voltage V2 by the resistor R3, which is in a high-level state. Therefore, both the anode and cathode of the first indicator light D1 are in a high-level state, and the first indicator light D1 is turned off and does not illuminate.

[0051] The verification circuit is used to detect whether the anode level of the indicator light is the same as the level of the control signal, and to determine whether the indicator light is faulty based on the detection result. It then outputs a fault signal including indicator light fault information to the interaction unit 80. For example, if the first verification unit 201 detects that the anode of the first indicator light D1 is at a high level and the first input terminal of the control unit 20 is at a low level, it determines that the first indicator light D1 is faulty and transmits a first fault signal to the interaction unit 80. It can be understood that the second verification unit 202 can transmit a second fault signal to the interaction unit 80.

[0052] Since the anode voltage of the third indicator light D3 is the second voltage V1, the conversion unit 204 converts the second voltage V2 into the first voltage V1, so that the third verification unit 203 can determine whether the third indicator light D3 is faulty based on the first voltage V1 and the level of the third output terminal of the control unit 20. When the third indicator light D3 is faulty, the third verification unit 203 can transmit a third fault signal to the interaction unit 80.

[0053] In this embodiment, the interaction unit 80 transmits a fault signal to the manager 40 to indicate the fault information of the indicator lights. Specifically, when the manager 40 receives the first fault signal output by the interaction unit 80, the manager 40 displays on its display unit that the first indicator light D1 has malfunctioned; when the manager 40 receives the second fault signal output by the interaction unit 80, the manager 40 displays on its display unit that the second indicator light D2 has malfunctioned; and when the manager 40 receives the third fault signal output by the interaction unit 80, the manager 40 displays on its display unit that the third indicator light D3 has malfunctioned.

[0054] Therefore, the hard disk indicator circuit 200 provided in this application embodiment can quickly and accurately obtain the fault status of the hard disk indicator by setting a verification circuit, and display it through the display unit of the manager, saving manpower and improving fault detection efficiency.

[0055] Those skilled in the art should recognize that the above embodiments are only used to illustrate this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of protection claimed in this application.

Claims

1. A hard disk indicator light circuit, characterized by, include: An indicator light unit, used to indicate the status of the hard disk, the indicator light unit including indicator lights; A control unit is used to detect the status of the hard disk and output control signals according to the status of the hard disk; A drive unit is electrically connected to the control unit. The drive unit adopts an open-drain output mode and is used to receive the control signal and illuminate the indicator unit according to the control signal. A verification unit is electrically connected to the indicator light unit and the control unit. The verification unit is used to obtain the voltage level of the indicator light anode and determine whether the indicator light unit is faulty based on the voltage level and the control signal.

2. The hard disk indicator light circuit of claim 1, wherein, The level value of the indicator unit includes the level value at one end of the indicator. If the level value is different from the level value of the control signal, the verification unit determines that the indicator unit is faulty and outputs a fault signal.

3. The hard drive indicator light circuit of claim 1, wherein, If the hard disk is in the first state, the control unit outputs a first control signal to the drive unit; if the hard disk is in the second state, the control unit outputs a second control signal to the drive unit; if the hard disk is in the third state, the control unit outputs a third control signal to the drive unit.

4. The hard disk indicator light circuit of claim 3, wherein, The drive unit is used to illuminate the first indicator light when it receives the first control signal, and to illuminate the second indicator light when it receives the second control signal, and to illuminate the third indicator light when it receives the third control signal.

5. The hard disk indicator light circuit of claim 4, wherein, If the voltage level at one end of the first indicator light is different from the voltage level of the first control signal, the verification unit outputs a first fault signal; if the voltage level at one end of the second indicator light is different from the voltage level of the second control signal, the verification unit outputs a second fault signal.

6. The hard disk indicator light circuit of claim 5, wherein, The hard disk indicator circuit also includes a conversion unit, which is electrically connected to the third indicator and the verification unit. The conversion unit is used to convert the first level value of one end of the third indicator into a second level value. If the second level value is different from the level value of the control signal, the verification unit outputs a third fault signal.

7. The hard disk indicator light circuit of claim 2, wherein, The hard disk indicator circuit also includes an interaction unit, which is electrically connected to the verification unit and the manager. The interaction unit is used to control the manager to display the fault status of the indicator light according to the fault signal.

8. The hard disk indicator light circuit of claim 4, wherein, The first output terminal of the control unit is electrically connected to the first input terminal of the drive unit and the verification unit. The second output terminal of the control unit is electrically connected to the second input terminal of the drive unit and the verification unit. The third output terminal of the control unit is electrically connected to the third input terminal of the drive unit and the verification unit. The first output terminal of the drive unit is electrically connected to the first terminal of the first indicator light. The second output terminal of the drive unit is electrically connected to the first terminal of the second indicator light. The third output terminal of the drive unit is electrically connected to the first terminal of the third indicator light.

9. The hard disk indicator light circuit of claim 4, wherein, A second end of the first indicator light is electrically connected to the verification unit, a second end of the second indicator light is electrically connected to the verification unit, and a second end of the third indicator light is electrically connected to the verification unit.

10. A hard disk backplane, characterized by, The hard disk backplane includes the hard disk indicator light circuit according to any one of claims 1 to 9.

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