Dual-power control device

Abstract

The utility model discloses a dual power supply control device, which is used for controlling a dual power supply system and comprises a control module, an electric quantity acquisition circuit, a power supply circuit, an output control circuit, a storage module and a connection module, the input end of the electric quantity acquisition circuit is used for connecting a first power supply and a second power supply, and the output end of the electric quantity acquisition circuit is connected with the control module; the input end of the power supply circuit is connected with the first power supply and the second power supply; the input end of the output control circuit is connected with the control module and the output end is connected with the relay; the storage module is connected with the control module; the connection module is connected with the control module. According to the utility model, the input states of the two power supplies can be detected through the electric quantity acquisition circuit, and the control module controls to switch to one power supply output with a better state. And power supply faults can be found in time through automatic detection of the power supplies, so that the switching-on output state of the two paths of power supplies can be judged.

Description

TECHNICAL FIELD

[0001] The utility model relates to power control technical field, more specifically, the utility model relates to a double power control device. BACKGROUND

[0002] At present, the power supply system is mostly single power supply or power supply switching switch device without signal detection.

[0003] In actual application, the existing power supply system or switching switch device may cause the double power switch to not act according to the control instruction due to the device aging, line fault and other conditions, so that the double power switching fails to occur, however, the double power controller does not monitor the state of the double power switch after switching control between the two-way ac power supply, so that the maintenance personnel's troubleshooting efficiency is low, and the root cause of the double power switching failure cannot be found in time. UTILITY MODEL CONTENTS

[0004] In view of the defects of the prior art, the utility model innovatively provides a double power control device, which can solve the technical problems of inconvenient double power control and fault detection in the prior art.

[0005] To achieve the above technical purpose, the utility model discloses a double power control device for controlling the double power supply system, comprising: a control module, an electric quantity acquisition circuit, a power supply circuit, an output control circuit, a storage module and a connection module, wherein,

[0006] The input end of the electric quantity acquisition circuit is used for connecting the first power supply and the second power supply, and the output end is connected with the control module;

[0007] The input end of the power supply circuit is connected with the first power supply and the second power supply, and the output end is connected with the control module and the power circuit;

[0008] The input end of the output control circuit is connected with the control module, and the output end is connected with the relay, and the relay is used for switching the power supply;

[0009] The storage module is connected with the control module and is used for storing data;

[0010] The connection module is connected with the control module and is used for communicating with external equipment.

[0011] Further, the double power control device further comprises an indicating circuit, the indicating circuit comprises an indicating lamp, the input end of the indicating circuit is connected with the control module, and is used for indicating the working state of the first power supply and the second power supply.

[0012] Further, the dual power supply control device further comprises an operation module, the operation module being configured to input an operation instruction.

[0013] Further, the operation module comprises a display screen and operation buttons.

[0014] Further, the operation module comprises a touch display screen.

[0015] Further, the power acquisition circuit comprises a voltage dividing circuit, the voltage dividing circuit comprising a plurality of voltage dividing resistors connected in series, and a DC voltage lifting circuit arranged at an output end of the voltage dividing circuit, the voltage lifting circuit being connected with the control module.

[0016] Further, a plurality of voltage dividing circuits are arranged, and each of the first power supply and the second power supply corresponds to one voltage dividing circuit.

[0017] Further, the power supply circuit comprises a voltage reducing module, a rectifying module and a filtering module.

[0018] Further, the output control circuit comprises a switching relay, a first closing relay, a second closing relay and a switching switch.

[0019] Further, the connection module comprises a communication interface and a network interface.

[0020] The dual power supply control device has the following advantages:

[0021] The dual power supply control device can detect the input state of two power supplies through the power acquisition circuit, and control the switching to the power supply with better state through the control module. In addition, through the automatic detection of the power supply, the power supply fault can be found in time, so as to judge the state of the closing output of the two power supplies, so as to detect whether the dual power supply switch acts according to the control instruction, and further improve the troubleshooting efficiency of the maintenance personnel. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A structural block diagram of the dual power supply control device according to an embodiment of the present application is shown;

[0023] Figure 2 A structural block diagram of the dual power supply control device according to an embodiment of the present application is shown;

[0024] Figure 3 A schematic diagram of the power acquisition circuit according to an embodiment of the present application is shown;

[0025] Figure 4 A schematic diagram of the output control circuit according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0026] The double power supply control device provided by the utility model will be explained and described in detail below in combination with the drawings of the specification.

[0027] Generally speaking, single power supply switching device or common double power supply switching device can basically meet the current power supply demand, but when the power supply is abnormal (voltage loss, overvoltage, undervoltage, etc.) or the double power supply switching is unsuccessful, it is required to automatically and reliably switch to the standby power supply or store fault records in time according to the regulations to realize uninterrupted power supply or troubleshoot the fault. With the improvement of power supply reliability requirements and the improvement of anti-accident measures, there are power consumption occasions with alternating power supply of two AC power supplies, such as hospitals, high-rise buildings, coal mines, etc.

[0028] In a single power supply system, one power supply is supplied, and in a double power supply system, one standby power supply is supplied, that is, a two-way power supply system is provided, and two-way power supply on-off detection function is added. The double power supply automatic switching device can automatically switch the power supply of the power consumption load from the normal power supply to the standby or emergency power supply, is suitable for power consumption occasions with simple load structure and without direct current power supply, is suitable for various working environments; effectively solves the problem that the ordinary double power supply switching and protection device cannot work normally in small-capacity power consumption occasions without direct current power supply, ensures uninterrupted power supply of the load, thereby improving the power supply reliability and effectively reducing the cost of the whole device. At the same time, the state of the double power supply switch can be monitored to detect whether the double power supply switch acts according to the control instruction, thereby improving the fault troubleshooting efficiency of the maintenance personnel.

[0029] The double power supply control device can detect the input state of the two power supplies through the electric quantity acquisition circuit, and control the switching to the power supply with better state through the control module. And through the automatic detection of the power supply, the power supply fault can be found in time, so as to judge the state of the two power supply on-off outputs, so as to detect whether the double power supply switch acts according to the control instruction, thereby improving the fault troubleshooting efficiency of the maintenance personnel.

[0030] In some embodiments, the utility model provides a double power supply control device for controlling a double power supply system, the double power supply system includes two AC power supplies, and the two AC power supplies can be powered by selecting one of them through switching. Figure 1As shown, the dual power supply control device comprises a control module, an electric quantity acquisition circuit, a power supply circuit, an output control circuit, a storage module and a connection module. The control module is a CPU (Central Processing Unit / Processor) for processing power supply state detection data and issuing control instructions. Optionally, the control module further comprises. The input end of the electric quantity acquisition circuit is connected to the first power supply and the second power supply, and the output end is connected to the control module. The control module is used to determine whether the first power supply and the second power supply are in a normal power supply state. The input end of the power supply circuit is connected to the first power supply and the second power supply, and the output end is connected to the control module and the power circuit. The input end of the output control circuit is connected to the control module, and the output end is connected to the relay. The relay is used to switch the power supply. The storage module is connected to the control module and is used to store and export operation information and historical record data for user to view and analyze. The connection module is connected to the control module and is used to communicate with external devices. Optionally, the connection module comprises an RS485 communication module and an RJ45 network interface. The RS485 communication module is provided with an RS485 isolation type communication interface and an RJ45 network interface. ModBus-RTU communication protocol is applied. The RS485 communication module has remote control, remote signaling, remote measurement and remote adjustment functions. The RS485 communication module can remotely control the generator set to start and stop and remotely control the switch to close and open. The RJ45 network interface is also used for program download.

[0031] Optionally, as shown in Figure 2 The dual power supply control device further comprises an indication circuit. The indication circuit comprises an indicator light. The input end of the indication circuit is connected to the control module and is used to indicate the working state of the first power supply and the second power supply. The indicator light is preferably an LED light. Two indicator lights are provided, one for each power supply. The closing state of the first power supply and the second power supply is indicated by the indicator light. For example, when the LED light is on, it indicates that the corresponding power supply is closed. When the LED light is off, it indicates that the corresponding power supply is in an open state. Optionally, the indication circuit is also used to indicate the low-voltage direct-current power supply state, the dual power supply closing and opening state and the alarm state in case of failure.

[0032] The dual power supply control device further comprises an operation module. The operation module is used to input operation instructions. In some embodiments, the operation module comprises a display screen and operation buttons. Optionally, the display screen is an LCD screen, preferably 80(RGB)×800 dot matrix with backlight. The display screen can display two languages (simplified Chinese and English) and can comprehensively and intuitively display the current power supply and its specific value. The display screen can also be used to observe the running state and data parameters in real time. The operation buttons are used to switch between automatic and manual operation modes. The operation buttons can be used to manually switch between two AC power supplies and manually set various parameters and view alarm information.

[0033] In some implementations, the operation module can also be set as a touch screen, which can display various parameter information and input control commands.

[0034] In some embodiments, the power acquisition circuit adopts a pure resistive voltage division and amplification acquisition method to convert the AC power into a sine wave signal in the range of 0 to 3.3V and transmit it to the control module for processing and calculation. This circuit design is simple, has high acquisition accuracy, fast response speed, and strong practicality.

[0035] In this embodiment, the power acquisition circuit includes a voltage divider circuit, and there are multiple voltage divider circuits, with one voltage divider circuit corresponding to each phase of the power supply. Each voltage divider circuit includes multiple voltage-dividing resistors connected in series. The output terminal of the voltage divider circuit is equipped with a DC voltage boosting circuit, which is connected to the control module. Taking phase A of the power supply as an example... Figure 3 As shown, the voltage divider circuit includes resistors R1, R2, R3, and R5. The small voltage waveform after voltage division is boosted by 1.65V DC to become a sine wave signal within the range of 0-3.3V, which is then transmitted to the control module for processing and calculation to determine the status of the two power inputs. The voltage boosting formula is: Va1 = A1 * R5 / (R1 + R2 + R3 + R5) + 1.65, where Va1 is the small voltage signal after voltage reduction processing of phase A, A1 is the initial AC voltage of phase A, and R1, R2, R3, and R5 are the resistance values ​​of each voltage divider resistor. Other corresponding voltage divider circuits are the same as those corresponding to phase A.

[0036] In this embodiment, the power supply circuit includes a step-down module, a rectifier module, and a filter module. The AC power input from the dual power sources is stepped down by AC-AC, rectified by a full-bridge rectifier, and filtered by the power supply circuit to obtain a low-voltage DC power that can power the main CPU and each module.

[0037] In this embodiment, the output control circuit includes a switching relay, a first closing relay, a second closing relay, and a switching switch. The switching relay, the first closing relay, and the second closing relay are connected to the control module and receive control commands from the control module. Figure 4 As shown, the switching relay can switch the first power supply and the second power supply after receiving the switching control signal from the control module. The power closing relay can switch the ATS (Automatic Transfer Switching Equipment) switch at the generator end after receiving the closing control signal from the control module, thereby realizing the operation of switching and opening / closing the two power supplies.

[0038] In the description of the utility model, it is understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0039] In the utility model, unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements or the interaction relationship of two elements, unless otherwise expressly limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] In the description of the specification, the description of the terms "the embodiment", "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in at least one embodiment or example. In addition, those skilled in the art can combine and combine the different embodiments or features of different embodiments or examples described in the specification without contradiction.

[0041] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise expressly specified.

[0042] The above is only the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement and simple improvement made on the essential content of the utility model shall be included in the protection scope of the utility model.

Claims

1. A dual-power supply control device for controlling a dual-power supply system, characterized in that, The application relates to a dual-power supply control device. The input end of the electric quantity collection circuit is used for connecting a first power supply and a second power supply, and the output end of the electric quantity collection circuit is connected with the control module. The input end of the power supply circuit is connected with the first power supply and the second power supply, and the output end of the power supply circuit is connected with the control module and a power consumption circuit. The input end of the output control circuit is connected with the control module, and the output end of the output control circuit is connected with a relay. The storage module is connected with the control module and is used for storing data. The connection module is connected with the control module and is used for being connected with external equipment. The dual-power supply control device further comprises an indicating circuit, the indicating circuit comprises an indicating lamp, the input end of the indicating circuit is connected with the control module, and the indicating circuit is used for indicating the working state of the first power supply and the second power supply.

2. The dual power control device of claim 1, wherein The dual-power supply control device further comprises an operation module, and the operation module is used for inputting operation instructions.

3. The dual power control device of claim 2, wherein The operation module comprises a display screen and operation buttons.

4. The dual power control device of claim 3, wherein The operation module comprises a touch display screen.

5. The dual power control device of claim 3, wherein The electric quantity collection circuit comprises a voltage division circuit, the voltage division circuit comprises a plurality of series-connected voltage division resistors, the output end of the voltage division circuit is provided with a direct-current voltage lifting circuit, and the voltage lifting circuit is connected with the control module.

6. The dual power control device of claim 1, wherein The voltage division circuit is provided with a plurality of voltage division circuits, and each of the first power supply and the second power supply corresponds to one voltage division circuit.

7. The dual power control device of claim 6, wherein The power supply circuit comprises a voltage reduction module, a rectification module and a filter module.

8. The dual power control device of claim 1, wherein The output control circuit comprises a switching relay, a first closing relay, a second closing relay and a switching switch.

9. The dual power control device of claim 1, wherein, The connection module comprises a communication interface and a network interface.

10. The dual power control device according to any one of claims 1 to 9, characterized in that ​

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