Dual-power-supply automatic switching control device with OLED (Organic Light Emitting Diode) display

Abstract

The utility model provides a dual power supply automatic switching control device with OLED display, which comprises a central processing unit, an AC power supply voltage acquisition circuit connected with the central processing unit, and an OLED display circuit connected with the central processing unit, the OLED display circuit comprises an OLED liquid crystal chip, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4 and a capacitor C5, the capacitor C1 is arranged between a second pin and a third pin of the OLED liquid crystal chip, the capacitor C2 is arranged between a fourth pin and a fifth pin of the OLED liquid crystal chip, and the capacitor C3 is arranged between a sixth pin and an eighth pin of the OLED liquid crystal chip. The OLED display circuit is additionally arranged in the dual-power-supply automatic switching control device, so that the dual-power-supply automatic switching control device has an OLED display function, and is low in energy consumption, good in image display effect and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of reliable power supply of multiple power sources, and in particular to a dual-power automatic switching control device with an OLED display. Background Art

[0002] Dual power conversion controller, also known as "automatic switching device". In the emergency power supply system, it is used to monitor the power circuit and convert one or several load circuits from one power source to another (backup) power source to ensure the continuous and reliable operation of important loads. In order to facilitate users to intuitively understand the working status of the device, some dual power conversion controllers are equipped with indicator lights on the display panel, such as the Chinese patent with announcement number CN208077824U; some dual power automatic switching controllers are also equipped with display screens, such as the Chinese patent with announcement number CN214254165U.

[0003] It should be noted that the display parts of existing dual power automatic switching controllers are various.

[0004] For example, the Chinese patent with the announcement number CN211859735U discloses a dual power automatic switching monitoring system, which includes a human-computer interaction module and a power module. The human-computer interaction module is composed of a button and an LCD display. However, the LCD display consumes a lot of electricity and has high energy consumption.

[0005] For example, the Chinese patent with announcement number CN217063373U discloses a dual power supply system for an LED display screen, including an LED display screen, a control processor, two power supply modules and two power detectors; however, the lamp beads of the LED display screen often fall off during transportation, installation and use, causing individual pixels to not light up, thus affecting the image display effect of the dual power supply system.

[0006] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0007] The utility model aims to provide a dual power automatic switching control device with OLED display in view of the deficiencies in the prior art.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a dual power automatic switching control device with OLED display, including a central processing unit, an AC power supply voltage acquisition circuit connected to the central processing unit, and an OLED display circuit connected to the central processing unit, wherein the OLED display circuit includes an OLED liquid crystal chip, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4 and a capacitor C5, wherein the capacitor C1 is arranged between the second pin and the third pin of the OLED liquid crystal chip, the capacitor C2 is arranged between the fourth pin and the fifth pin of the OLED liquid crystal chip, and the capacitor C3 is arranged between the sixth pin and the eighth pin of the OLED liquid crystal chip; the OLED The 11th and 12th pins of the liquid crystal chip are grounded respectively, the 13th pin of the OLED liquid crystal chip is connected to the SPI_CS pin of the central processor, the 14th and 15th pins of the OLED liquid crystal chip are connected to the I / O pin of the central processor respectively, the 18th pin of the OLED liquid crystal chip is connected to the SPI_SCL pin of the central processor, the 19th pin of the OLED liquid crystal chip is connected to the SPI_MOSI pin of the central processor, the 26th pin of the OLED liquid crystal chip is grounded through a resistor, the 27th pin of the OLED liquid crystal chip is grounded through the capacitor C4, and the 28th pin of the OLED liquid crystal chip is grounded through the capacitor C5.

[0009] The beneficial effects of the utility model are:

[0010] 1) The utility model provides a dual power automatic switching control device with OLED display. By adding an OLED display circuit in the dual power automatic switching control device, the dual power automatic switching control device has an OLED display function, which not only has low energy consumption, good image display effect, but also low cost;

[0011] 2) The utility model also provides an LED display circuit, thereby improving a dual-power automatic switching control device for dual-screen display, which is convenient for partitioning display content;

[0012] 3) The utility model collects the voltage states of two AC power supplies through the AC power supply voltage collection module, and collects the power supply state of the feedback point through the feedback point voltage collection module. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a circuit principle diagram of the OLED display circuit of the utility model;

[0015] Figure 3It is a circuit principle diagram of the LED display circuit of the utility model;

[0016] Figure 4 It is a circuit principle diagram of the key input circuit of the utility model;

[0017] Figure 5 It is the circuit principle diagram of the 485 communication module of the utility model;

[0018] Figure 6 It is a circuit principle diagram of the feedback point voltage collection circuit of the utility model;

[0019] Figure 7 It is a circuit schematic diagram of the relay output circuit of the utility model;

[0020] Figure 8 The utility model is a circuit principle diagram of a 3.3V voltage output circuit and a 1.65V voltage output circuit. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0022] Example 1

[0023] This embodiment provides a specific implementation of a dual power automatic switching control device with an OLED display; the dual power automatic switching control device with an OLED display includes a central processing unit, and also includes an AC power supply voltage acquisition circuit connected to the central processing unit, the AC power supply voltage acquisition circuit is used to collect the voltage status of two AC power output circuits, and display the power supply voltage detection result through the OLED display circuit;

[0024] It also includes an OLED (Organic Light-Emitting Diode) display circuit connected to the central processor; as shown in the attached Figure 2 As shown, the OLED display circuit includes an OLED liquid crystal chip, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4 and a capacitor C5, wherein the capacitor C1 is arranged between the second pin and the third pin of the OLED liquid crystal chip, the capacitor C2 is arranged between the fourth pin and the fifth pin of the OLED liquid crystal chip, and the capacitor C3 is arranged between the sixth pin and the eighth pin of the OLED liquid crystal chip;

[0025] The 11th pin and the 12th pin of the OLED liquid crystal chip are grounded respectively, the 13th pin of the OLED liquid crystal chip is connected to the SPI_CS pin of the central processor, the 14th pin and the 15th pin of the OLED liquid crystal chip are connected to the I / O pin of the central processor respectively, the 18th pin of the OLED liquid crystal chip is connected to the SPI_SCL pin of the central processor, the 19th pin of the OLED liquid crystal chip is connected to the SPI_MOSI pin of the central processor, the 26th pin of the OLED liquid crystal chip is grounded through a resistor, the 27th pin of the OLED liquid crystal chip is grounded through the capacitor C4, and the 28th pin of the OLED liquid crystal chip is grounded through the capacitor C5.

[0026] It should be noted that, in this embodiment, an OLED display circuit is added to the dual power supply automatic switching control device so that the dual power supply automatic switching control device has an OLED display function, so the device can use an OLED (organic light emitting diode) display screen to display relevant information; the OLED display circuit has a simple circuit structure, can improve the reliability and maintainability of the power supply system, and provide users with an intuitive and convenient operation experience.

[0027] It should also be noted that when the 11th and 12th pins of the OLED liquid crystal chip are grounded, the bus interface is configured as an SPI interface; the 13th pin of the OLED liquid crystal chip is the CS chip select pin, which needs to be connected to the SPI_CS pin of the central processing unit; the 14th pin of the OLED liquid crystal chip is the NREST reset pin, which needs to be connected to the I / O pin of the central processing unit; the 15th pin of the OLED liquid crystal chip is the AO data / command control pin, which needs to be connected to the I / O pin of the central processing unit; the 18th pin of the OLED liquid crystal chip is the SCL pin, which needs to be connected to the SPI_SCL pin of the central processing unit; the 19th pin of the OLED liquid crystal chip is the SI pin, which needs to be connected to the SPI_MOSI pin of the central processing unit; the 16th and 17th pins of the OLED liquid crystal chip are not used when using the SPI communication interface and can be grounded.

[0028] It should also be noted that the circuit structure of the AC power supply voltage acquisition circuit is prior art and will not be described in detail here.

[0029] In some embodiments, the model of the OLED liquid crystal chip is QG-2864KSWEG01. Specifically, the OLED liquid crystal used in this embodiment is a 0.96-inch white liquid crystal, and its operating voltage is DC +3.3V. It uses its SPI communication method to communicate with the central processing unit.

[0030] In other embodiments, the OLED liquid crystal chip may also be other OLED display screens that can achieve the above functions.

[0031] In some embodiments, the model of the central processing unit is GD32F330C8T6. In other embodiments, the central processing unit may also be other single-chip microcomputers that can realize the above functions.

[0032] In some embodiments, the capacitor C1 , the capacitor C2 , the capacitor C3 , the capacitor C4 , and the capacitor C5 are all charge pump capacitors.

[0033] Example 2

[0034] Based on Example 1, this example provides another specific implementation of a dual power automatic switching control device with OLED display.

[0035] Specifically, the dual power automatic switching control device with OLED display also includes an LED display circuit connected to the central processor, thereby improving a dual power automatic switching control device with dual-screen display, which is convenient for partitioning display content.

[0036] It should be noted that the OLED display circuit is used to display parameters and configuration information such as the AC power status and the switching delay time, and the LED display circuit is used to control the LED light status to indicate the alarm status.

[0037] In some embodiments, the dual power automatic switching control device with OLED display also includes a key input circuit connected to the central processing unit, and the key input circuit is used to implement operation control and / or parameter configuration. For example, when the main power supply fails or requires maintenance, the user can manually switch to the backup power supply through a button to ensure continuous power supply to the equipment.

[0038] In a specific embodiment, the circuit schematic diagram of the LED display circuit is as shown in the attached Figure 3 As shown, the circuit schematic diagram of the key input circuit is shown in the attached Figure 4 shown.

[0039] Example 3

[0040] Based on the above embodiment, this embodiment provides another specific implementation of a dual power automatic switching control device with OLED display.

[0041] Specifically, the dual power automatic switching control device with OLED display also includes a communication module connected to the central processing unit, which is used for communicating and interconnecting with a host computer.

[0042] In a specific embodiment, the circuit schematic diagram of the communication module is as shown in the attached Figure 5 shown.

[0043] It should be noted that the communication module is an RS485 communication circuit, and the central processor can communicate with the host computer through the RS485 interface. The host computer can read the two power supply status information, alarm information, configuration parameter information, and can also reconfigure relevant parameter values.

[0044] Example 4

[0045] Based on the above embodiment, this embodiment provides another specific implementation of a dual power automatic switching control device with OLED display, as shown in the attached Figure 1 shown.

[0046] In some embodiments, the dual power automatic switching control device with OLED display also includes a feedback point voltage acquisition circuit connected to the central processor, and the feedback point voltage acquisition circuit is used to collect one / two-way closing feedback signals (connecting one / two-way closing feedback points on various switches).

[0047] As attached Figure 6 As shown, the signal collected by the feedback point voltage collection circuit is an AC voltage signal (the voltage of the switch feedback point phase A and phase N). Specifically, the feedback point voltage collection circuit includes an AF phase AC voltage collection circuit and an AN phase AC voltage collection circuit;

[0048] The AF phase AC voltage is stepped down through a resistor, resistor R2, resistor R3, resistor R4 and resistor R6. The other end of resistor R6 is connected to a semi-reference. Resistors R7 and R8 are connected in parallel between the AF phase voltage and the AN phase voltage, in order to reduce the input impedance between the AF phase voltage and the AN phase and improve the circuit's ability to suppress noise. The function of the magnetic bead L1 is to suppress high-frequency noise and spike interference on the signal line and absorb the interference of electrostatic pulses. Capacitor C6, resistor R5 and capacitor C7 form a π-type filter to filter out high-frequency components on the voltage signal. After the AF phase AC voltage is stepped down through the resistor string and then passes through the π-type filter, it directly enters the corresponding channel of the analog-to-digital converter integrated in the central processor for processing.

[0049] The AN phase AC voltage is stepped down through resistors R9, R10, R11, R12 and R14. The other end of resistor R14 is connected to a half reference. The function of the magnetic bead L2 is to suppress high-frequency noise and spike interference on the signal line and absorb the interference of electrostatic pulses. Capacitor C8, resistor R13 and capacitor C9 form a π-type filter. The AN phase AC voltage is stepped down through the resistor string and then passes through the π-type filter before directly entering the corresponding channel of the analog-to-digital converter integrated in the central processing unit for processing.

[0050] It can be understood that the central processing unit is a single-chip microcomputer with an integrated 12-bit or above ADC analog-to-digital converter. It converts the two collected voltage signals into numerical values, uses the DMA in the single-chip microcomputer to directly store the sampled data in the memory in the MCU, and accurately calculates the voltage between the AF phase and the AN phase through the existing calculation method.

[0051] In some embodiments, the dual power automatic switching control device with OLED display further includes a power supply connected to the central processor, such as the attached Figure 8 As shown, the power supply includes a +3.3V voltage output circuit and a +1.65V voltage output circuit, which provide working power for the device.

[0052] In some embodiments, the dual power automatic switching control device with OLED display also includes a relay output circuit connected to the central processing unit.

[0053] It can be understood that the circuit schematic diagram of the relay output circuit is as shown in the attached Figure 7 As shown, by controlling external devices such as sound and light alarms through relay output circuits, functions such as sound and light alarms can be realized.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A dual power automatic switching control device with OLED display, comprising a central processing unit, and an AC power supply voltage acquisition circuit connected to the central processing unit, characterized in that: It also includes an OLED display circuit connected to the central processor, the OLED display circuit includes an OLED liquid crystal chip, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4 and a capacitor C5, the capacitor C1 is arranged between the second pin and the third pin of the OLED liquid crystal chip, the capacitor C2 is arranged between the fourth pin and the fifth pin of the OLED liquid crystal chip, and the capacitor C3 is arranged between the sixth pin and the eighth pin of the OLED liquid crystal chip; The 11th pin and the 12th pin of the OLED liquid crystal chip are grounded respectively, the 13th pin of the OLED liquid crystal chip is connected to the SPI_CS pin of the central processor, the 14th pin and the 15th pin of the OLED liquid crystal chip are connected to the I / O pin of the central processor respectively, the 18th pin of the OLED liquid crystal chip is connected to the SPI_SCL pin of the central processor, the 19th pin of the OLED liquid crystal chip is connected to the SPI_MOSI pin of the central processor, the 26th pin of the OLED liquid crystal chip is grounded through a resistor, the 27th pin of the OLED liquid crystal chip is grounded through the capacitor C4, and the 28th pin of the OLED liquid crystal chip is grounded through the capacitor C5.

2. The dual power automatic switching control device with OLED display according to claim 1 is characterized in that: It also includes an LED display circuit connected to the central processing unit.

3. The dual power automatic switching control device with OLED display according to claim 1 or 2, characterized in that: It also includes a key input circuit connected to the central processing unit.

4. The dual power automatic switching control device with OLED display according to claim 3 is characterized in that: It also includes a communication module connected to the central processing unit, which is used for communicating and interconnecting with the host computer.

5. The dual power automatic switching control device with OLED display according to claim 4 is characterized in that: It also includes a feedback point voltage acquisition circuit connected to the central processing unit, and the feedback point voltage acquisition circuit is used to collect one / two-way closing feedback signals.

6. The dual power automatic switching control device with OLED display according to claim 5, characterized in that: It also includes a power supply connected to the central processing unit, and the power supply includes a 3.3V voltage output circuit and a 1.65V voltage output circuit.

7. The dual power automatic switching control device with OLED display according to claim 6 is characterized in that: It also includes a relay output circuit connected to the central processing unit.

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