Direct-current power supply disconnection control device

Abstract

The utility model provides a direct-current power supply disconnection control device, which belongs to the technical field of direct-current power supply control and comprises a direct-current power supply module connected with an external power supply and a control panel and a switch assembly. The control panel is connected with the switch assembly, and the control panel is connected with the Ethernet through an Ethernet interface; the switch assembly is provided with a power input interface and a power output interface, and the switch assembly is connected with the voltage detection hole through the voltage detection interface; disconnection control is achieved in the switch assembly through a direct current contactor. According to the utility model, power supply control distributed at the ends of the control modules, the sensors and the actuators is integrated, direct-current power supply of the control modules, the sensors and the actuators of the system is centrally and uniformly controlled, EMC protection is carried out on the modules / units / boxes, electromagnetic interference of direct-current power supply is eliminated and weakened, signal path time delay is eliminated, and the reliability of the system is improved. And remote unified control of a plurality of groups of direct-current power supply control modules / units / boxes is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to direct current source control technical field, concretely relates to a direct current source disconnecting control device. BACKGROUND

[0002] With the increasing complexity of the mechanical and electrical hydraulic control system in the field of spaceflight, aviation and navigation, the number of control modules, sensors and actuators is large, and the layout distance is increasing, so the simple, effective and stable disconnecting control of system power supply is an important part of the control system.

[0003] The current system power supply disconnecting control method has many advantages and disadvantages and adaptability, and the digital IO board or low-power relay switch board of the measurement and control computer is usually used to drive the secondary relay of the control module, sensor and actuator end to realize the power supply disconnecting control of the electric appliance end. The digital IO board or low-power relay switch board is represented by the industrial control board card of the PXI bus digital IO board or switch board of the NI company.

[0004] In a complex mechanical and electrical hydraulic control system, there are scenes where the direct current power supply of each component and module of the system needs to be uniformly disconnected and controlled, and the number of direct current power supply channels and paths that need to be uniformly disconnected and controlled is large. Due to the increase in the number of control modules, sensors and actuators of the control system and the layout distance, the wiring and control of the system power supply are becoming more and more complex, and there are defects such as double wiring of the power supply line and the control line, electromagnetic interference of the electric end contact connection and disconnection, and defects in the synchronization of the system power supply. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a direct current source disconnecting control device which can optimize the complex electrical power supply disconnecting wiring and be centrally and uniformly disconnected and controlled by system software through a high-speed network, so as to solve at least one technical problem in the background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a direct current source disconnecting control device, which comprises a direct current source module connected with an external power supply, a control board and a switch assembly connected with the direct current source module, a control board connected with the switch assembly, an Ethernet interface connected with an Ethernet of the control board, a power input interface and a power output interface of the switch assembly, a voltage detection hole connected with a voltage detection interface of the switch assembly for detecting the output power voltage, and a direct current contactor in the switch assembly for disconnecting control.

[0008] Further, the DC power module is built by an AC filter, an AC-DC switching power supply and a DC filter circuit, and a pilot lamp is configured to identify the working state.

[0009] Further, the control board is built by an embedded ARM processor, and has a universal serial communication interface USART and a general input / output interface with enough pins.

[0010] Further, the control board is built by an embedded ARM processor, and has a universal serial communication interface USART and a general input / output interface with enough pins.

[0011] Further, the input / output interface of the embedded ARM processor drives the contactor through a Darlington transistor matrix with a transient artificial clamping diode.

[0012] The utility model has the beneficial effects: with the modularization design concept, the power supply control distributed in the control module, the sensor and the actuator end is gathered to the DC power supply disconnect control module / unit / box, centralized and unified control is carried out to the DC power supply of each control module, sensor and actuator of the system, the EMC protection is carried out to the module / unit / box, eliminates, weakens the electromagnetic interference of DC power supply, and centralized and unified control also eliminates the signal path time delay, reaches the control synchronization, simultaneously, through the Ethernet control, the remote unified control of multiple DC power supply control modules / unit / boxes is also realized.

[0013] Additional aspects and advantages of the utility model will be partially given in the following description, which will become obvious from the following description or be understood through the practice of the utility model. DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will briefly introduce the drawing needed to be used in the embodiment description, obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating creative labor.

[0015] Figure 1 The utility model embodiment described DC power supply disconnect control device block diagram.

[0016] Figure 2 The utility model embodiment described 1 into 4 DC power supply disconnect control block diagram.

[0017] Figure 3 The utility model embodiment described 4 into 4 DC power supply disconnect control block diagram.

[0018] Figure 4The utility model discloses an 1-in 8-out DC power supply disconnect control block diagram.

[0019] Figure 5 The utility model discloses an 8-in 8-out DC power supply disconnect control block diagram.

[0020] Figure 6 The utility model discloses a DC contactor configuration schematic diagram under different input / output channel configuration. DETAILED DESCRIPTION

[0021] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with the drawings are exemplary and are only used to explain the utility model and cannot be explained as the limitation of the utility model.

[0022] Those skilled in the art can understand that, unless otherwise defined, all the terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of the ordinary skilled person in the field to which the utility model belongs.

[0023] It should also be understood that terms such as those defined in general dictionaries should be understood as having the same meaning as in the context of the prior art, and unless defined as such, should not be interpreted as idealized or overly formal.

[0024] Those skilled in the art can understand that, unless otherwise stated, the singular form "one", "a", "said" and "the" used herein can also include the plural form. It should be further understood that the phrase "comprising" used in the specification of the utility model means that the features, integers, steps, operations, elements and / or groups exist, but do not exclude the existence or addition of one or more other features, integers, steps, operations, elements and / or their groups.

[0025] In the description of the present specification, the description of the terms "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. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0026] In the description of the present application, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is two or more than two, unless otherwise specifically limited.

[0027] In the description of the present application, the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present technology and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present technology.

[0028] Unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "setting" should be broadly understood, for example, it can be fixedly connected, set, or it can be detachably connected, set, or integrally connected, set. For those skilled in the art, the specific meaning of the above terms in the present technology can be understood according to the specific circumstances.

[0029] In order to facilitate the understanding of the present application, the present application will be further explained and described in conjunction with the drawings and specific embodiments, and the specific embodiments do not constitute a limitation on the embodiments of the present application.

[0030] Those skilled in the art should understand that the drawings are only schematic diagrams of the embodiments, and the components in the drawings are not necessarily necessary for the implementation of the present application.

[0031] As shown in Figure 1 In the present embodiment, a DC power disconnecting control device (module / unit / box) is provided, which is composed of DC working power supply, Ethernet interface, MCU, contactor driving circuit, DC contactor group, panel control switch and other parts.

[0032] In the present embodiment, for the DC working power supply (DC power supply module), the DC power supply disconnecting control module / unit / box is powered by an external power supply, which provides working power to the internal circuit of the module after DC power conversion, including: MCU, network interface and other digital circuit working power, driving circuit, DC contactor group and other control circuit working power. The DC power supply is built by AC filter, AC-DC switching power supply and DC filter circuit, and is configured with indicator light to identify the working state.

[0033] The Ethernet interface provides a remote control approach for the DC power disconnect control module / unit / box, and the interface circuit realizes conversion of the Ethernet communication interface to the universal serial communication interface USART, and synchronously and transparently transmits data between the MCU and the remote host computer. The Ethernet interface is realized by a serial-to-Ethernet module (super network port), which internally integrates a TCP / IP protocol stack and can easily complete the networking function of an embedded device.

[0034] The MCU, as the control core, receives the work instructions transmitted by the host computer through the Ethernet, and implements the internal management of the DC power disconnect control module / unit / box and the action of the DC contactor group according to the instructions, thereby completing the power disconnect and connection functions of the module. The MCU uses a minimum system built with an embedded ARM processor, which has a universal serial communication interface USART and a general-purpose input / output interface (GPIO) with sufficient pins.

[0035] The GPIO of the embedded ARM processor drives the contactor through a Darlington transistor matrix with a transient artificial clamping diode.

[0036] The power disconnect and connection functions are realized by the DC contactor, which is driven by the GPIO of the MCU through a driving circuit.

[0037] The input ends of the contactors are connected in parallel, i.e., the configuration is a 1-in-n-out DC power disconnect control module / unit / box, where n≥1, as shown in Figure 2 , Figure 4 The input ends of the contactors are independent, i.e., the configuration is an n-in-n-out DC power disconnect control module / unit / box, where n≥1, as shown in Figure 3 , Figure 5 The size of n depends on the power supply capacity of the DC power supply, the actual number of power supply branches required, and the volume capacity of the control module / unit / box.

[0038] As shown in Figure 6 , the multiple contactor input / output can be configured and adjusted according to the actual requirements of the purpose, such as the example in Figure 6 , but not limited to the example in Figure 6 . The flexible adjustment of the input / output configuration and the number of paths depends on the number of DC contactors, the power supply capacity of the DC power supply, the actual number of power supply branches required, and the volume capacity of the control module / unit / box.

[0039] Although the DC power disconnect control module / unit / box is mainly remotely programmed, there is still a panel control switch, which mainly includes:

[0040] Working mode control - local and program control: in local mode, the operator disconnects the DC power output path through the panel switch; in program control mode, the working instructions transmitted by the upper computer through Ethernet are received, and the DC power output path is disconnected according to the instructions.

[0041] Manual control switch of power supply path - in local working mode, the operator manually controls the disconnection of the DC power output path.

[0042] In summary, the DC power supply disconnection control device described in the embodiment of the utility model, the DC power supply disconnection control module / unit / box inside, according to the actual need of system power supply: can use DPST contactor to realize the disconnection control of the positive and negative (ground) two poles of power supply, so as to realize the disconnection control of the non-common ground power supply. In addition to only having the power supply disconnection control function, power supply switching can also be realized - that is, through SPDT contactor to realize the disconnection / switching control of different power supplies (including different parameter power supplies) ; through DPDT contactor to realize the disconnection / switching control of the positive and negative (ground) two poles of different power supplies (including different types of power supplies, different parameter power supplies). The input / output of the power supply path contactor can be adjusted according to the actual needs of the purpose, which can be a combination of the above disconnection and switching control configurations, and the number of various configuration combinations can be flexibly adjusted according to the needs, which depends on the number of contactors, the power supply capacity of the power supply, the actual power supply branch number requirement and the volume capacity of the control module / unit / box.

[0043] Although the specific embodiments of the utility model have been described above in combination with the drawings, it is not a limitation on the protection scope of the utility model, and those skilled in the art should understand that various modifications or deformations made by those skilled in the art on the basis of the technical solutions disclosed in the utility model without creative labor should be covered within the protection scope of the utility model.

Claims

1. A DC power disconnect control device, characterized by, The utility model relates to a kind of DC power supply module, including: DC power module connected with external power supply, the DC power module connects control panel and switch assembly;The control panel connects the switch assembly, and the control panel is connected with Ethernet through Ethernet interface;The switch assembly is equipped with power input interface and power output interface, and the switch assembly is connected with voltage detection hole through voltage detection interface;The switch assembly is disconnected by DC contactor Control.

2. The DC power disconnect control device of claim 1, wherein, DC power module is built by AC filter, AC-DC switching power supply and DC filter circuit, and is configured with indicator light to identify working condition.

3. The DC power disconnect control device of claim 1, wherein, Control panel is built with embedded ARM processor, with universal serial communication interface USART and enough general input / output interface pin.

4. The DC power disconnect control device of claim 3, wherein, The control panel is equipped with universal serial communication interface USART, realizes Ethernet communication interface conversion, and synchronously transparently transmits data between control panel and remote host computer.

5. The DC power disconnect control device of claim 3, wherein, The input / output interface of embedded ARM processor drives contactor through darlington transistor matrix with transient artificial clamping diode.

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