Indicating circuit based on working states of power supply main board and power supply standby board

Abstract

The utility model relates to an indicating circuit based on working states of a power supply main board and a power supply standby board, and relates to the technical field of electronic power. The standby power supply board comprises a power supply back board and a power supply main board, a control module, a first indication module, a second indication module and a third indication module are arranged on the standby power supply board, and the first indication module, the second indication module and the third indication module are all connected to the control module in a controlled mode; the output end of the power supply mainboard is electrically connected to the input end of the control module and the input end of the third indication module, and the output pins of the controller are electrically connected to the control ends of the first indication module, the second indication module and the third indication module respectively. The method has the effect that the working states of the power supply main board and the power supply standby board can be visually obtained.

Description

Technical Field

[0001] This application relates to the field of electronic power technology, and in particular to an indicator circuit based on the operating status of a power supply main board and a power supply backup board. Background Technology

[0002] In the field of electronic power, the stability and reliability of the power supply system are of paramount importance. To meet the high-power supply requirements of devices such as PLCs, a main power supply board and a backup power supply board are typically configured to provide power as needed.

[0003] Specifically, when the main power supply board is working, the control module can control the backup power supply board to be in the off state; when the main power supply board is not working, the control module can control the backup power supply board to be in the on state and select the backup power supply board to be in the first output mode or the second output mode. However, the operators cannot directly obtain the working status of the main power supply board and the backup power supply board. Utility Model Content

[0004] In order to intuitively obtain the working status of the power supply motherboard and the power supply backup board, this application provides an indicator circuit based on the working status of the power supply motherboard and the power supply backup board.

[0005] The indicator circuit based on the working status of the power supply main board and the power supply backup board provided in this application adopts the following technical solution:

[0006] An indicator circuit based on the working status of a power supply main board and a power supply backup board includes a power supply backplane and a power supply main board. The power supply backup board is provided with a control module, a first indicator module, a second indicator module, and a third indicator module. The first indicator module, the second indicator module, and the third indicator module are all controlled and connected to the control module. The output terminal of the power supply main board is electrically connected to the input terminal of the control module and the input terminal of the third indicator module. The output pin of the control module is electrically connected to the control terminals of the first indicator module, the second indicator module, and the third indicator module, respectively.

[0007] By adopting the above technical solution, and by setting a control module and multiple indicator modules on the power supply backup board, the working status of the power supply main board and the power supply backup board can be monitored in real time, and the current power supply mode can be displayed intuitively through the indicator modules; among them, the third indicator module is used to provide feedback on the working status of the power supply main board.

[0008] Preferably, the first indicator module includes LED1, switch Q15, switch Q16 and switch Q17. The output pin LED1_G of the control module is electrically connected to the control terminal of switch Q15 through resistor R116. The output terminal of switch Q15 is grounded. The input terminal of switch Q15 is electrically connected to pin GC of LED1 through resistor R117.

[0009] The output pin LED1_R of the control module is electrically connected to the control terminal of the switching transistor Q16 through resistor R120. The output terminal of the switching transistor Q16 is grounded, and the input terminal of the switching transistor Q16 is electrically connected to the RC pin of LED1 through resistor R118.

[0010] The output pin LED1_G of the control module is electrically connected to the control terminal of the switching transistor Q17 through resistor R121. The output terminal of the switching transistor Q17 is grounded, and the drain of the switching transistor Q17 is electrically connected to the gate of the switching transistor Q16.

[0011] The GA and RA pins of LED1 are both electrically connected to the +3V3MVU voltage output terminal of the power supply.

[0012] By adopting the above technical solution, the first indicator module achieves precise control of LED1 by introducing multiple switching transistors and resistors. Through different pin control signals, LED1 can emit light of different colors, thus clearly indicating the working status of the power supply main board or power supply backup board.

[0013] Preferably, the first indicator module further includes capacitor C80 and capacitor C81, with the input terminal of the switch Q15 grounded through capacitor C80 and the input terminal of the switch Q16 grounded through capacitor C81.

[0014] By adopting the above technical solution, introducing capacitors C80 and C81 into the first indicator module can effectively filter out high-frequency noise at the input of the switching transistor and improve the stability of the circuit.

[0015] Preferably, the second indicator module includes LED2, switch Q18, switch Q19, switch Q20 and switch Q21. The output pin +V12_PG_LED2 of the control module is electrically connected to the control terminal of switch Q18, the input terminal of switch Q18 is electrically connected to the gate of switch Q19, and the output terminal of switch Q18 is grounded.

[0016] The output pin LED2_G of the control module is electrically connected to the control terminal of the switching transistor Q19 through resistor R116. The output terminal of the switching transistor Q19 is grounded, and the input terminal of the switching transistor Q19 is electrically connected to the pin GC of LED2 through resistor R117.

[0017] The output pin LED2_R of the control module is electrically connected to the control terminal of the switching transistor Q20 through resistor R120. The output terminal of the switching transistor Q20 is grounded, and the input terminal of the switching transistor Q20 is electrically connected to the RC pin of LED2 through resistor R118.

[0018] The output pin LED2_G of the control module is electrically connected to the control terminal of the switching transistor Q21 through resistor R121. The output terminal of the switching transistor Q21 is grounded, and the drain of the switching transistor Q21 is electrically connected to the gate of the switching transistor Q20.

[0019] The GA and RA pins of LED2 are both electrically connected to the +3V3MVU voltage output terminal of the power supply.

[0020] By adopting the above technical solution, the second indicator module implements additional control logic for LED2 by adding a switching transistor Q18. When the power supply backup board is in different output modes, LED2 can accurately reflect the current working status through different color combinations.

[0021] Preferably, the first indicator module further includes capacitor C80 and capacitor C81, the input terminal of the switch Q19 is grounded through capacitor C80, and the input terminal of the switch Q20 is grounded through capacitor C81.

[0022] By adopting the above technical solution, capacitors C80 and C81 are introduced into the second indicator module, further optimizing the circuit's anti-interference performance.

[0023] Preferably, the third indicator module includes LED3, switch Q22, switch Q23 and switch Q24. The output pin LED3_G of the control module is electrically connected to the control terminal of switch Q22 through resistor R116 and the output terminal of the power supply motherboard. The output terminal of switch Q22 is grounded, and the input terminal of switch Q22 is electrically connected to the pin GC of LED3 through resistor R117.

[0024] The output pin LED3_R of the control module is electrically connected to the control terminal of the switching transistor Q23 through resistor R120. The output terminal of the switching transistor Q23 is grounded, and the input terminal of the switching transistor Q23 is electrically connected to the RC pin of LED3 through resistor R118.

[0025] The output pin LED3_G of the control module is electrically connected to the control terminal of the switching transistor Q24 through resistor R121. The output terminal of the switching transistor Q24 is grounded, and the drain of the switching transistor Q24 is electrically connected to the gate of the switching transistor Q23.

[0026] The GA and RA pins of LED3 are both electrically connected to the +3V3MVU voltage output terminal of the power supply.

[0027] By adopting the above technical solution, precise control of LED3 is achieved. Through different pin control signals, LED3 can accurately reflect the working status of the power supply motherboard.

[0028] Preferably, the first indicator module further includes capacitors C85 and C86, with the input terminal of the switch Q22 grounded through capacitor C85 and the input terminal of the switch Q23 grounded through capacitor C86.

[0029] The first indicator module further includes capacitors C85 and C86. The input terminal of the switch Q22 is grounded through capacitor C85, and the input terminal of the switch Q23 is grounded through capacitor C86.

[0030] By adopting the above technical solution and introducing capacitors C85 and C86 into the third indicator module, the circuit's anti-interference capability and stability are further improved. By filtering out noise signals at the input of the switching transistor, the accuracy of the LED3's indication status is ensured, enhancing the reliability of the entire indicator circuit.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. By monitoring the working status of the power supply main board in real time through the control module and displaying the power supply status of different parts through multiple indicator modules, the status of the entire power supply system can be more comprehensively reflected, thereby improving the reliability and maintainability of the system.

[0033] 2. Each indicator module uses a switching transistor as the switching element, and controls the color change of the LED through different logic combinations, so that users can quickly determine the power supply status by observing the color of the LED. Attached Figure Description

[0034] Figure 1 This is a schematic block diagram of an embodiment of this application;

[0035] Figure 2 This is a circuit diagram of the control module in an embodiment of this application;

[0036] Figure 3 This is a circuit diagram of the first indicator module in the embodiments of this application;

[0037] Figure 4 This is a circuit diagram of the second indicator module in an embodiment of this application;

[0038] Figure 5 This is a circuit diagram of the third indicator module in an embodiment of this application. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0040] This application discloses an indicator circuit based on the working status of the power supply main board and the power supply backup board.

[0041] Reference Figure 1 An indicator circuit based on the operating status of a power supply main board and a power supply backup board is disclosed. The circuit includes a control module, a first indicator module, a second indicator module, and a third indicator module disposed on the power supply backup board. The power supply main board and the power supply backup board are electrically connected. When the power supply main board is operating, the control module can control the power supply backup board to be in a closed state; when the power supply main board is not operating, the control module can control the power supply backup board to be in a closed state and select whether the power supply backup board is in a first output mode or a second output mode. The first indicator module, the second indicator module, and the third indicator module are all controlled and connected to the control module, thereby enabling the control module to provide indications according to the current power supply mode.

[0042] Reference Figure 2 The control module includes a controller U1 and its peripheral circuitry. The output terminal BP_PWR_GPIO_EC of the main control board is connected to the input terminal of the controller U1, enabling the controller U1 to select and drive the first, second, and third indicator modules based on the level output by the received output terminal BP_PWR_GPIO_EC. Specifically, when the output terminal BP_PWR_GPIO_EC outputs a high level, it indicates that the main power supply board is in the working state and the backup power supply board is in the off state; when the output terminal BP_PWR_GPIO_EC outputs a low level, it indicates that the main power supply board is in the off state and the backup power supply board is in the working state. Furthermore, the output terminal BP_PWR_GPIO_EC is electrically connected to the control terminal of the third indicator module, which allows the controller to clearly identify whether the backup power supply board or the main power supply board is currently operating.

[0043] Furthermore, the power supply backup board has a first output mode and a second output mode. When the power supply backup board is in the second output mode, the output pin +V12_PG_LED2 of the controller U1 outputs a low level; when the power supply backup board is in the first output mode, the output pin +V12_PG_LED2 of the controller U1 outputs a high level. Simultaneously, multiple output pins of the controller U1 are electrically connected to the control terminals of the first indicator module, the second indicator module, and the third indicator module, respectively, to achieve control of the first indicator module, the second indicator module, and the third indicator module.

[0044] refer to Figure 3The first indicator module includes LED1, switching transistors Q15, Q16, and Q17. In this embodiment, switching transistors Q15, Q16, and Q17 are all NMOS transistors. The +3V 3MVU power supply output terminal is electrically connected to the gate of switching transistor Q15 through resistor R115. The controller output pin LED1_G is electrically connected to the gate of switching transistor Q15 through resistor R116. The source of switching transistor Q15 is grounded, and the drain of switching transistor Q15 is electrically connected to the GC pin of LED1 through resistor R117. The controller output pin LED1_R is electrically connected to the gate of switching transistor Q16 through resistor R120. The source of switching transistor Q16 is grounded, and the drain of switching transistor Q16 is electrically connected to the RC pin of LED1 through resistor R118.

[0045] The controller's output pin LED1_G is electrically connected to the gate of switching transistor Q17 through resistor R121, and pin RA is also electrically connected to the gate of switching transistor Q17 through resistor R119. The source of switching transistor Q17 is grounded, and the drain of switching transistor Q17 is electrically connected to the gate of switching transistor Q16. Pins GA and RA of LED1 are both electrically connected to the +3V 3MVU power supply output.

[0046] Preferably, the first indicator module further includes capacitor C80 and capacitor C81, the drain of switch Q15 is grounded through capacitor C80, and the drain of switch Q16 is grounded through capacitor C81.

[0047] When output pin LED1_G outputs a high level and output pin LED1_R outputs a low level, switching transistors Q15 and Q17 are turned on, while switching transistor Q16 is turned off. At this time, pin GC of LED1 is grounded through switching transistor Q15, meaning LED1 emits green light. When output pin LED1_G outputs a low level and output pin LED1_R outputs a high level, switching transistors Q15 and Q17 are turned off, while switching transistor Q16 is turned on. At this time, pin GC of LED1 is grounded through switching transistor Q15, meaning LED1 emits red light.

[0048] refer to Figure 3 and Figure 4The second indicator module has a basically the same structure as the first indicator module, including switching transistors Q19, Q20, and Q21, capacitors C82 and C83. The controller's output pin LED2_G is electrically connected to the gates of switching transistors Q19 and Q21, and the controller's output pin LED2_R is electrically connected to the gate of switching transistor Q20. The difference is that the second indicator module also includes a switching transistor Q18. The controller's output pin +V12_PG_LED2 is electrically connected to the gate of switching transistor Q18, the drain of switching transistor Q18 is electrically connected to the gate of switching transistor Q19, and the source of switching transistor Q18 is grounded.

[0049] When output pin LE2_G is high and output pin LE2_R is low, transistors Q19 and Q21 are turned on, and transistor Q20 is turned off. At this time, pin GC of LED2 is grounded through transistor Q19, meaning LED2 emits green light. When output pin LE21_G is low and output pin LED2_R is high, transistors Q19 and Q21 are turned off, and transistor Q20 is turned on. At this time, pin GC of LED2 is grounded through transistor Q15, meaning LED2 emits red light. When the controller's output pin +V12_PG_LED2 is high, transistor Q18 is turned on. This grounds the gate of transistor Q19, causing Q19 to turn off, and LED2 does not emit green light.

[0050] refer to Figure 3 and Figure 5 The third indicator module has a basically the same structure as the first indicator module, including switching transistors Q22, Q23, and Q24, capacitors C85 and C86. The controller's output pin LED3_G is electrically connected to the gates of switching transistors Q22 and Q24, and the controller's output pin LED3_R is electrically connected to the gate of switching transistor Q23. The difference is that the input pin BP_PWR_GPIO_EC is electrically connected to the gate of switching transistor Q22 through resistor R129. When the input pin BP_PWR_GPIO_EC is low, i.e., when the power supply motherboard is not powered, LED3 emits green light.

[0051] The implementation principle of an indicator circuit based on the working status of a main power supply board and a backup power supply board in this application embodiment is as follows: When the control module controls the backup power supply board to achieve the first output mode, the controller U1 controls LED1 to emit green light, LED2 to emit red light, and LED3 to emit green light; when the control module controls the backup power supply board to achieve the second output mode, the controller U2 controls LED1 to emit red light, LED2 to emit green light, and LED3 to emit green light. When the control module controls the main power supply board to shut down, LED3 emits red light.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An indicator circuit based on the operating status of a power supply main board and a power supply backup board, comprising a power supply backplane and a power supply main board, characterized in that: The power supply backup board is equipped with a control module, a first indicator module, a second indicator module, and a third indicator module. The first indicator module, the second indicator module, and the third indicator module are all controlled and connected to the control module. The output terminal of the power supply main board is electrically connected to the input terminal of the control module and the input terminal of the third indicator module. The output pin of the control module is electrically connected to the control terminals of the first indicator module, the second indicator module, and the third indicator module, respectively.

2. The indicator circuit based on the working status of the power supply main board and the power supply backup board according to claim 1, characterized in that: The first indicator module includes LED1, switch Q15, switch Q16 and switch Q17. The output pin LED1_G of the control module is electrically connected to the control terminal of switch Q15 through resistor R116. The output terminal of switch Q15 is grounded. The input terminal of switch Q15 is electrically connected to pin GC of LED1 through resistor R117. The output pin LED1_R of the control module is electrically connected to the control terminal of the switching transistor Q16 through resistor R120. The output terminal of the switching transistor Q16 is grounded, and the input terminal of the switching transistor Q16 is electrically connected to the RC pin of LED1 through resistor R118. The output pin LED1_G of the control module is electrically connected to the control terminal of the switching transistor Q17 through resistor R121. The output terminal of the switching transistor Q17 is grounded, and the drain of the switching transistor Q17 is electrically connected to the gate of the switching transistor Q16. The GA and RA pins of LED1 are both electrically connected to the +3V3MVU voltage output terminal of the power supply.

3. The indicator circuit based on the working status of the power supply main board and the power supply backup board according to claim 2, characterized in that: The first indicator module further includes capacitor C80 and capacitor C81. The input terminal of the switch Q15 is grounded through capacitor C80, and the input terminal of the switch Q16 is grounded through capacitor C81.

4. The indicator circuit based on the working status of the power supply main board and the power supply backup board according to claim 1, characterized in that: The second indicator module includes LED2, switch Q18, switch Q19, switch Q20 and switch Q21. The output pin +V12_PG_LED2 of the control module is electrically connected to the control terminal of switch Q18, the input terminal of switch Q18 is electrically connected to the gate of switch Q19, and the output terminal of switch Q18 is grounded. The output pin LED2_G of the control module is electrically connected to the control terminal of the switching transistor Q19 through resistor R116. The output terminal of the switching transistor Q19 is grounded, and the input terminal of the switching transistor Q19 is electrically connected to the pin GC of LED2 through resistor R117. The output pin LED2_R of the control module is electrically connected to the control terminal of the switching transistor Q20 through resistor R120. The output terminal of the switching transistor Q20 is grounded, and the input terminal of the switching transistor Q20 is electrically connected to the RC pin of LED2 through resistor R118. The output pin LED2_G of the control module is electrically connected to the control terminal of the switching transistor Q21 through resistor R121. The output terminal of the switching transistor Q21 is grounded, and the drain of the switching transistor Q21 is electrically connected to the gate of the switching transistor Q20. The GA and RA pins of LED2 are both electrically connected to the +3V3MVU voltage output terminal of the power supply.

5. The indicator circuit based on the working status of the power supply main board and the power supply backup board according to claim 4, characterized in that: The first indicator module further includes capacitor C80 and capacitor C81. The input terminal of the switch Q19 is grounded through capacitor C80, and the input terminal of the switch Q20 is grounded through capacitor C81.

6. The indicator circuit based on the working status of the power supply main board and the power supply backup board according to claim 1, characterized in that: The third indicator module includes LED3, switch Q22, switch Q23 and switch Q24. The output pin LED3_G of the control module is electrically connected to the control terminal of switch Q22 through resistor R116 and the output terminal of the power supply motherboard. The output terminal of switch Q22 is grounded. The input terminal of switch Q22 is electrically connected to the pin GC of LED3 through resistor R117. The output pin LED3_R of the control module is electrically connected to the control terminal of the switching transistor Q23 through resistor R120. The output terminal of the switching transistor Q23 is grounded, and the input terminal of the switching transistor Q23 is electrically connected to the RC pin of LED3 through resistor R118. The output pin LED3_G of the control module is electrically connected to the control terminal of the switching transistor Q24 through resistor R121. The output terminal of the switching transistor Q24 is grounded, and the drain of the switching transistor Q24 is electrically connected to the gate of the switching transistor Q23. The GA and RA pins of LED3 are both electrically connected to the +3V3MVU voltage output terminal of the power supply.

7. The indicator circuit based on the working status of the power supply main board and the power supply backup board according to claim 6, characterized in that: The first indicator module further includes capacitors C85 and C86. The input terminal of the switch Q22 is grounded through capacitor C85, and the input terminal of the switch Q23 is grounded through capacitor C86.

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