Display screen system based on UPS

Abstract

The utility model relates to a display screen system based on a UPS, which comprises a display screen and a single-chip microcomputer, the display screen is provided with a plurality of display units, a control module in the single-chip microcomputer is electrically connected with the display screen, and a battery unit, a mains supply unit, a hardware protection unit, bus voltage and an inverter are electrically connected with corresponding AD conversion modules in the single-chip microcomputer respectively. The corresponding AD conversion module transmits the information to the control module, the information is transmitted to the display screen through the control module, and the display screen displays the matched display unit. The system displays the current state of the UPS, prompts error codes in time, and displays the running line of the current state, so that a user clearly knows the internal running condition.

Description

Technical Field

[0001] The utility model relates to the display field, in particular to a display screen system based on UPS. Background Art

[0002] UPS, or uninterruptible power supply, is an uninterruptible power supply with energy storage device. It is mainly used to provide uninterruptible power supply to some equipment with high requirements for power stability. UPS is widely used in environments with high requirements for power reliability, such as medical systems, network monitoring and network systems. The display system of existing UPS-based equipment is relatively simple. It usually displays basic values ​​such as output voltage and remaining battery capacity of the display system, and displays fault problems by lighting indicator lights. The specific cause of the fault cannot be identified, and the staff needs to check one by one, resulting in work instability. Therefore, it is necessary to design a display system that prompts the corresponding error code in time and allows users to clearly understand the cause of the fault. Utility Model Content

[0003] In view of the shortcomings of the background technology, the technical problem to be solved by the utility model is to provide a display screen system based on UPS, which displays the current status of UPS, prompts error codes in time, and displays the operating line of the current status, so that users can clearly understand the internal operation status.

[0004] The utility model is completed by adopting the following technical scheme: a display screen system based on UPS, including a display screen and a single-chip microcomputer, the display screen has multiple display units, a control module in the single-chip microcomputer is electrically connected to the display screen, a battery unit, a mains unit, a hardware protection unit, a bus voltage and an inverter are respectively electrically connected to corresponding AD conversion modules in the single-chip microcomputer, the corresponding AD conversion module transmits information to the control module, and transmits it to the display screen through the control module, and the display screen displays the matching display unit.

[0005] Furthermore, the display unit includes an error code display unit, a DC voltage display unit, an icon unit, an inverter display unit and a mains power display unit.

[0006] Furthermore, the battery unit is electrically connected to a first sampling circuit, and the first sampling circuit is connected to a first AD conversion module to transmit information to a control module, and the control module monitors the voltage. When the voltage is ≤9.5V, the DC voltage display unit of the display screen displays the current output voltage, and an error code 01 is displayed in the error code display unit; when the voltage is ≥15V, the DC voltage display unit of the display screen displays the current output voltage, and an error code 02 is displayed in the error code display unit; when the voltage is 9.5V<voltage<15V, the DC voltage is in a normal state, and the DC voltage is displayed in the DC voltage display unit.

[0007] Furthermore, the hardware protection unit includes an NTC thermistor sampling circuit, which is connected to the second AD conversion module in the single-chip microcomputer. The second AD conversion module is connected to transmit the monitored temperature information to the control module. The control module sets the fan threshold and temperature threshold. When the temperature exceeds the over-temperature protection threshold, the over-temperature protection is started, and the error code 07 is displayed in the error code display unit of the display screen; when the temperature is lower than the over-temperature protection recovery threshold, the over-temperature protection is restored; when the temperature is higher than the fan start threshold, the fan starts, and the fan icon is displayed in the icon unit of the display screen.

[0008] Furthermore, the bus voltage is electrically connected to the second sampling circuit, and the second sampling circuit transmits information to the control module through the third AD conversion module. The control module sets the bus voltage threshold. When the bus voltage is greater than the bus voltage upper limit threshold, the error code 04 is displayed in the error code display unit of the display screen; when the bus voltage is less than the bus voltage lower limit threshold, the error code 03 is displayed in the error code display unit of the display screen; when the bus voltage is within the upper and lower limits of the bus voltage threshold, the control module calculates the duty cycle and pulse width according to the AD value to control the inverter output voltage.

[0009] Furthermore, the inverter output end is electrically connected to the third sampling circuit, the third sampling circuit is transmitted to the control module through the third AD conversion module, the control module calculates the inverter output current according to the AD value, calculates the inverter AC voltage, frequency and power, when the AC voltage power is greater than the overload power threshold, the error code 06 is displayed in the error code display unit of the display screen; when the AC voltage power is less than the overload power threshold, the inverter voltage frequency and power are displayed in the inverter display unit of the display screen.

[0010] Furthermore, the AC power unit is electrically connected to the fifth AD conversion module through an AD sampling circuit, and the fifth AD conversion module is connected to transmit information to the control module. The control module samples 40 points in one cycle and maintains the data. After the data sampling is completed and the calculation is valid, a numerical correction is performed and the AC power voltage is displayed in the AC power display unit of the display screen.

[0011] Furthermore, the AC power unit is electrically connected to a frequency detection conversion circuit, which transmits information to a control module. The control module captures the frequency, calculates the frequency and period, and displays the AC power frequency in a AC power display unit of the display screen.

[0012] Furthermore, the icon unit includes a fan icon, a mains icon, an AC to DC converter icon, a DC to AC converter icon, a battery power icon and a load icon.

[0013] In the utility model, the control module of the single chip monitors the DC voltage, temperature information, bus voltage, inverter voltage power and mains frequency and voltage, and displays them on the display screen in real time. The icon unit displays the corresponding icon according to the current operating state of the device, and displays the current operating line, and displays the operating line of the current state at the same time, so that the user can clearly understand the internal operation status, and timely monitor the fault problem to prompt the corresponding error code, so that the user can clearly understand the cause of the fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a flow chart of a display screen system based on UPS;

[0015] Figure 2 A schematic diagram of the power-on moment of a display screen system based on UPS;

[0016] Figure 3 A schematic diagram of a DC input voltage and an inverter output AC voltage of a display screen system based on a UPS;

[0017] Figure 4 A schematic diagram of an inverter output voltage and frequency of a display screen system based on UPS;

[0018] Figure 5 A schematic diagram of an inverter output voltage and output power of a display screen system based on UPS;

[0019] Figure 6 A schematic diagram of the output power and power percentage of an inverter output of a UPS-based display screen system;

[0020] Figure 7 A schematic diagram of a DC input voltage undervoltage protection state (error code 01) of a display screen system based on UPS;

[0021] Figure 8 A schematic diagram of a DC input voltage overvoltage protection (error code display 02) for a display screen system based on UPS;

[0022] Fig. 9 A schematic diagram of DC bus voltage undervoltage protection (error code display 03) in a display screen system based on UPS;

[0023] Fig.10 A schematic diagram of DC bus voltage overvoltage protection (error code display 04) in a UPS-based display screen system;

[0024] Fig.11 A schematic diagram of inverter output overload protection (error code display 06) in a UPS-based display screen system;

[0025] Fig.12 A schematic diagram of over-temperature protection (error code display 07) for an inverter and a charger in a display screen system based on a UPS;

[0026] Fig.13 The present invention is a schematic diagram showing the actual input voltage of the AC input and output in a UPS-based display screen system. DETAILED DESCRIPTION

[0027] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0028] Reference Figure 1-13 As shown, the utility model provides a display screen system based on UPS, including a display screen 1 and a single-chip microcomputer, wherein the display screen has multiple display units, a control module in the single-chip microcomputer is electrically connected to the display screen, a battery unit, a mains unit, a hardware protection unit, a bus voltage and an inverter are electrically connected to corresponding AD conversion modules in the single-chip microcomputer respectively, and the corresponding AD conversion module transmits information to the control module, and transmits it to the display screen through the control module, and the display screen displays the matching display unit. The display unit includes an error code display unit 2, a DC voltage display unit, an icon unit 3, an inverter display unit and a mains display unit. The icon unit includes a fan icon, a mains icon, an AC to DC icon, a DC to AC icon, a battery power icon and a load icon.

[0029] Reference Figure 2 , Figure 7 and Figure 8 As shown, the battery unit is electrically connected to the first sampling circuit, and the first sampling circuit is connected to the first AD conversion module to transmit information to the control module. The control module monitors the voltage. When the voltage is ≤9.5V, the DC voltage display unit of the display screen displays the current output voltage, and the error code 01 is displayed in the error code display unit; when the voltage is ≥15V, the DC voltage display unit of the display screen displays the current output voltage, and the error code 02 is displayed in the error code display unit; when the voltage is 9.5V<voltage<15V, the DC voltage is in a normal state, and the DC voltage is displayed in the DC voltage display unit, wherein the DC input voltage display error is ±0.2VDC under no-load conditions.

[0030] Reference Fig.12As shown, the hardware protection unit includes an NTC thermistor sampling circuit, which is connected to the second AD conversion module in the single-chip microcomputer. The second AD conversion module is connected to transmit the monitored temperature information to the control module. The control module sets the fan threshold and the temperature threshold. When the temperature exceeds the over-temperature protection threshold, the over-temperature protection is started, and the error code 07 is displayed in the error code display unit of the display screen; when the temperature is less than the over-temperature protection recovery threshold, the over-temperature protection is restored; when the temperature is greater than the fan start threshold, the fan starts, and the fan icon is displayed in the icon unit of the display screen; when the temperature is less than the fan stop threshold, the fan icon is displayed as stopped.

[0031] Reference Fig. 9 and Fig.10 As shown, the bus voltage is electrically connected to the second sampling circuit, and the second sampling circuit transmits information to the control module through the third AD conversion module. The control module sets the bus voltage threshold. When the bus voltage is greater than the bus voltage upper limit threshold, the DC bus voltage is over-voltage protected, and the error code 04 is displayed in the error code display unit of the display screen; when the bus voltage is less than the bus voltage lower line threshold, the DC bus voltage is under-voltage protected, and the error code 03 is displayed in the error code display unit of the display screen; when the bus voltage is within the upper and lower limits of the bus voltage threshold, the control module calculates the duty cycle and pulse width according to the AD value to control the output voltage of the inverter.

[0032] Reference Figure 3 , Figure 4 , Figure 5 and Fig.11 As shown, the output current (output voltage) of the inverter is electrically connected to the third sampling circuit, and the third sampling circuit is transmitted to the control module through the third AD conversion module. The control module calculates the inverter output current according to the AD value, and calculates the inverter AC voltage, frequency and power. When the AC voltage power is greater than the overload power threshold, the inverter outputs overload protection, and the error code 06 is displayed in the error code display unit of the display screen; when the AC voltage power is less than the overload power threshold, the inverter voltage, frequency and power are displayed in the inverter display unit of the display screen.

[0033] Reference Fig.13 As shown, the mains unit is electrically connected to the fifth AD conversion module through an AD sampling circuit, and the fifth AD conversion module is connected to transmit information to the control module. The control module samples 40 points in one cycle and keeps the data. After the data sampling is completed and the calculation is valid, the numerical correction is performed, and the mains voltage is displayed in the mains display unit of the display screen. The mains unit is electrically connected to the frequency detection conversion circuit, and the frequency detection conversion circuit transmits information to the control module. The control module captures the frequency, calculates the frequency and period, and displays the mains frequency in the mains display unit of the display screen.

[0034] When the display system is powered on, all icons are displayed in full screen. The control module of the single-chip microcomputer monitors DC voltage, temperature information, bus voltage, inverter voltage power, mains frequency and voltage, and displays them on the display screen in real time. The icon unit displays the corresponding icon according to the current operating status of the device, and displays the operating line of the current status at the same time, so that the user can clearly understand the internal operation status and prompt the error code in time.

[0035] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent changes without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A display screen system based on UPS, characterized by: It includes a display screen and a single-chip microcomputer, wherein the display screen has multiple display units, a control module in the single-chip microcomputer is electrically connected to the display screen, a battery unit, a mains unit, a hardware protection unit, a bus voltage and an inverter are electrically connected to corresponding AD conversion modules in the single-chip microcomputer respectively, and the corresponding AD conversion module transmits information to the control module, and transmits the information to the display screen through the control module, and the display screen displays the matching display unit.

2. The display screen system based on UPS according to claim 1, characterized in that: The display unit includes an error code display unit, a DC voltage display unit, an icon unit, an inverter display unit and a mains power display unit.

3. The display screen system based on UPS according to claim 2 is characterized in that: The battery unit is electrically connected to the first sampling circuit, and the first sampling circuit is connected to the first AD conversion module to transmit information to the control module. The control module monitors the voltage. When the voltage is ≤9.5V, the DC voltage display unit of the display screen displays the current output voltage, and the error code 01 is displayed in the error code display unit; when the voltage is ≥15V, the DC voltage display unit of the display screen displays the current output voltage, and the error code 02 is displayed in the error code display unit; When the voltage is 9.5V<the voltage<15V, the DC voltage is in a normal state, and the DC voltage is displayed in the DC voltage display unit.

4. A display screen system based on UPS according to claim 2 or 3, characterized in that: The hardware protection unit includes an NTC thermistor sampling circuit, which is connected to a second AD conversion module in the single-chip microcomputer, and the second AD conversion module is connected to transmit the monitored temperature information to the control module, and the control module sets the fan threshold and the temperature threshold. When the temperature exceeds the over-temperature protection threshold, the over-temperature protection is started, and the error code 07 is displayed in the error code display unit of the display screen; When the temperature is lower than the over-temperature protection recovery threshold, the over-temperature protection is restored; when the temperature is higher than the fan start threshold, the fan starts, and the fan icon is displayed in the icon unit of the display screen.

5. The display screen system based on UPS according to claim 4 is characterized in that: The bus voltage is electrically connected to the second sampling circuit, and the second sampling circuit transmits information to the control module through the third AD conversion module. The control module sets the bus voltage threshold. When the bus voltage is greater than the bus voltage upper limit threshold, the error code 04 is displayed in the error code display unit of the display screen; when the bus voltage is less than the bus voltage lower limit threshold, the error code 03 is displayed in the error code display unit of the display screen; when the bus voltage is within the upper and lower limits of the bus voltage threshold, the control module calculates the duty cycle and pulse width according to the AD value to control the inverter output voltage.

6. The display screen system based on UPS according to claim 5, characterized in that: The inverter output end is electrically connected to the third sampling circuit, and the third sampling circuit is transmitted to the control module through the third AD conversion module. The control module calculates the inverter output current according to the AD value, and calculates the inverter AC voltage, frequency and power. When the AC voltage power is greater than the overload power threshold, the error code 06 is displayed in the error code display unit of the display screen; when the AC voltage power is less than the overload power threshold, the inverter voltage frequency and power are displayed in the inverter display unit of the display screen.

7. The display screen system based on UPS according to claim 6 is characterized in that: The AC power unit is electrically connected to the fifth AD conversion module through an AD sampling circuit. The fifth AD conversion module is connected to transmit information to the control module. The control module samples 40 points in one cycle and keeps the data. After the data sampling is completed and the calculation is valid, the numerical correction is performed and the AC power voltage is displayed in the AC power display unit of the display screen.

8. The display screen system based on UPS according to claim 6, characterized in that: The mains unit is electrically connected to the frequency detection conversion circuit, the frequency detection conversion circuit transmits information to the control module, the control module captures the frequency, calculates the frequency and the period, and displays the mains frequency in the mains display unit of the display screen.

9. A display screen system based on UPS according to claim 2 or 3 or 5 or 6 or 7 or 8, characterized in that: The icon unit includes a fan icon, a mains icon, an AC to DC icon, a DC to AC icon, a battery power icon and a load icon.

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