CN211698019U

CN211698019U - Load information display device and display system

Info

Publication number: CN211698019U
Application number: CN201922379011.6U
Authority: CN
Inventors: 王岚欣; 丰带君; 朱杰; 魏曦; 谢建波
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-10-16
Anticipated expiration: 2029-12-23

Abstract

The utility model provides a load information display device and display system relates to low-voltage apparatus technical field. The load information display equipment comprises a display, a processor, a multiplexer and a plurality of communication interfaces, wherein the display is connected with the processor, the processor is connected with the multiplexer, the multiplexer is connected with the plurality of communication interfaces, each communication interface is connected with a measurement protection device, and the multiplexer is used for controlling connection or disconnection of a connection path between the multiplexer and the plurality of communication interfaces under the control of the processor. The processor is communicated with only one measurement protection device by controlling the multiplexer at the same moment, the same address can be used by each measurement protection device, different communication addresses do not need to be set for each measurement protection device, and therefore the time division multiplexing and multiplexing functions are achieved, equipment is maintained more conveniently, and maintenance efficiency is high.

Description

Load information display device and display system

Technical Field

The utility model relates to a low-voltage apparatus technical field particularly, relates to a load information display equipment and display system.

Background

In the process of power utilization of the load equipment, in order to avoid overload caused by fault of the load equipment or artificial operation hidden danger, the switch cuts off the power supply, so that the whole cabinet equipment is powered off. Usually, the load information display device is used to monitor the information of the load device in real time, so as to ensure the normal power supply of the cabinet.

In the prior art, a load information display device generally adopts a gateway type, the gateway type is that a plurality of measurement protection devices are connected through a 485 bus, and the measurement protection devices acquire load information through measurement and transmit the load information to a controller, so that the controller controls the display device to display the load information.

However, since the gateway type is adopted, it is necessary to set a different communication address for each measurement protection device, which causes inconvenience in equipment maintenance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a load information display device and display system to the not enough among the above-mentioned prior art to solve that exists among the prior art because of every measures protection device and sets up different communication address, and the inconvenient problem of equipment maintenance that leads to.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:

in a first aspect, an embodiment of the present application provides a load information display device, including: a display, a processor, a multiplexer, and a plurality of communication interfaces;

the display is connected with the processor, the processor is connected with the multiplexer, the multiplexer is connected with the plurality of communication interfaces, each communication interface is connected with one measurement protection device, and the multiplexer is used for controlling connection or disconnection of a connection path between the multiplexer and the plurality of communication interfaces under the control of the processor;

the processor is used for collecting load information measured by the measurement protection device corresponding to the conducted connection path through the conducted connection path.

Optionally, the multiplexer has a control terminal, an output terminal, and a plurality of data input terminals; the control end and the output end are respectively connected with the processor, and each data input end is connected with one communication interface;

and the multiplexer is used for controlling the connection of the communication interface corresponding to the input address to be switched on and controlling the connection of other communication interfaces to be switched off under the action of the input address transmitted by the processor through the control end.

Optionally, the multiplexer is configured to control connection paths of the communication interfaces to be turned on and connection paths of other communication interfaces to be turned off in turn under the control of the processor.

Optionally, the number of the data input terminals is greater than or equal to the number of the communication interfaces.

Optionally, the multiplexer is an integrated chip of a 1-out-of-4 multiplexer.

Optionally, the communication interface is a serial transmission interface.

Optionally, the serial transmission interface is a class a interface of a universal serial bus USB.

Optionally, the measurement protection device is a circuit breaker.

Optionally, the load information includes at least one of the following information: voltage, current, power consumption, electric energy, power consumption frequency, power factor, harmonic, load running state, event record.

In a second aspect, an embodiment of the present application further provides a display system, including:

a plurality of measurement protection devices, and the load information display apparatus of the first aspect, wherein each communication interface in the load information display apparatus is connected to one of the measurement protection devices.

The beneficial effect of this application is:

in the load information display device and the display system provided by the application, the load information display device comprises a display, a processor, a multiplexer and a plurality of communication interfaces, wherein the display is connected with the processor, the processor is connected with the multiplexer, the multiplexer is connected with the plurality of communication interfaces, each communication interface is connected with a measurement protection device, and the multiplexer is used for controlling connection or disconnection of a connection path between the multiplexer and the plurality of communication interfaces under the control of the processor. The processor is communicated with only one measurement protection device by controlling the multiplexer at the same moment, the same address can be used by each measurement protection device, different communication addresses do not need to be set for each measurement protection device, and therefore the time division multiplexing and multiplexing functions are achieved, equipment is maintained more conveniently, and maintenance efficiency is high.

In addition, each measurement protection device is connected with a load, load information is obtained through measurement of the measurement protection devices, the processor is conducted with a connection path of a required communication interface through controlling the multiplexer, so that the load information is collected from the measurement protection devices connected with the communication interface, the display is controlled to display, real-time display and monitoring of the load information are achieved, and safe operation of load equipment is guaranteed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of a load information display device according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of a multiplexer according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a multiplexer gating scheme according to an embodiment of the present application;

fig. 4 is a schematic diagram of a display system according to an embodiment of the present application.

Icon: 100-a load information display device; 101-a display; 102-a processor; 103-a multiplexer; 104-a communication interface; 1031-control end; 1032-output; 1033-a data input; 200-a display system; 201-measuring the protection device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The load information display apparatus provided in the present application is exemplified by a plurality of examples as follows.

Fig. 1 is a schematic view of a load information display device according to an embodiment of the present application, and as shown in fig. 1, the load information display device 100 includes: a display 101, a processor 102, a multiplexer 103, and a plurality of communication interfaces 104.

The display 101 is connected with the processor 102, the processor 102 is connected with the multiplexer 103, the multiplexer 103 is connected with the plurality of communication interfaces 104, each communication interface 104 is connected with a measurement protection device, and the multiplexer 103 is used for controlling connection or disconnection of connection paths between the multiplexer and the plurality of communication interfaces 104 under the control of the processor 102.

It should be noted that, in order to realize real-time monitoring and display of load information and guarantee the power consumption safety of the load and the normal power distribution of the power distribution cabinet, the load information display device is usually used to perform real-time monitoring and display on the obtained load information, so as to achieve the purpose of fault early warning and guarantee the normal operation of the load.

The load information display device 100 provided in the present embodiment is a time-division multiplexing-gated load information display device. Each communication interface 104 may be connected to a measurement and protection device. The processor 102 controls the multiplexer 103 to gate each communication interface 104 in turn, collects the load information of the measurement protection device, and displays the load information in turn through the display 101. The multiplexer 103 is connected to only one measurement protection device at the same time, so that each measurement protection device can use the same address without separate setting, thereby realizing the function of time division multiplexing and multiplexing. Compared with the prior art, in the embodiment, different communication addresses do not need to be set for each measurement protection device, so that the equipment is more convenient to maintain, and the maintenance efficiency is higher.

Alternatively, the display 101 may be integrated in the load information display apparatus 100, and the load information display apparatus 100 may be mounted on a power distribution cabinet. The display 101 is used for displaying information sent by the processor 102.

The processor 102 may include: a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a Programmable Logic Device (PLD), a controller, a micro controller Unit, and the like. The processor 102 is configured to control connection and disconnection of connection paths between the multiplexer 103 and the plurality of communication interfaces 104, acquire load information measured by a measurement protection device connected to the communication interface 104 that is connected to the multiplexer when the connection path is connected, and control the display 101 to display the acquired load information.

The multiplexer 103 may select one communication interface 104 corresponding to the control information from the plurality of communication interfaces 104 to be connected and turned on according to the control information input by the processor 102. The processor 102 is configured to collect load information measured by the measurement protection device corresponding to the conducted connection path through the conducted connection path.

It should be noted that the measurement protection device is further connected to the load device, and is configured to measure information of a load connected to the measurement protection device, and meanwhile, determine whether a fault exists in the circuit according to the collected information of the load, and timely cut off the fault circuit, so as to perform a circuit protection function, and ensure safe operation of the device.

In summary, the load information display device provided in this embodiment includes a display, a processor, a multiplexer, and a plurality of communication interfaces, where the display is connected to the processor, the processor is connected to the multiplexer, the multiplexer is connected to the plurality of communication interfaces, each communication interface is connected to one measurement protection device, and the multiplexer is configured to control connection or disconnection of a connection path between the multiplexer and the plurality of communication interfaces under the control of the processor. The processor is communicated with only one measurement protection device by controlling the multiplexer at the same moment, the same address can be used by each measurement protection device, different communication addresses do not need to be set for each measurement protection device, and therefore the time division multiplexing and multiplexing functions are achieved, equipment is maintained more conveniently, and maintenance efficiency is high.

Fig. 2 is a schematic diagram of a multiplexer provided in an embodiment of the present application, and optionally, as shown in fig. 2, the multiplexer 103 has a control terminal 1031, an output terminal 1032, and a plurality of data input terminals 1033; control terminal 1031 and output terminal 1032 are respectively connected to processor 102, and each data input terminal 1033 is connected to one communication interface 104.

The multiplexer 103 is configured to control a connection path of the communication interface corresponding to the input address to be connected and control a connection path of another communication interface to be disconnected under the action of the input address transmitted by the processor 102 through the control terminal 1031.

Optionally, the multiplexer 103 is configured to control connection paths of the communication interfaces 104 to be turned on and connection paths of other communication interfaces to be turned off in turn under the control of the processor 102.

Alternatively, the multiplexer 103 may select an input signal of a communication interface corresponding to an input address from the plurality of communication interfaces 104 according to the input address sent by the processor 102 through the control terminal 1031, and send the input signal to the output terminal 1032, so that the connection path between the processor 102 and the communication interface of the input signal is conducted according to the received input signal. At any time, the processor 102 controls only the connection path of the multiplexer 103 to one communication interface 104 to be on, and when the connection path of the one communication interface 104 is on, the connection paths of the other plurality of communication interfaces are off. At the next time, the processor 102 continues to select the connection of the connection path of the communication interface corresponding to the new input address by the new input address sent by the control terminal 1031, and switches the connection path of the communication interface at the previous time from on to off. In this way, the processor 102 controls the multiplexer 103 to alternately conduct the connection paths of the communication interfaces 104, so as to collect the load information measured by the measurement protection device connected to each communication interface 104.

Optionally, the number of data input terminals 1033 is greater than or equal to the number of communication interfaces 104.

In some embodiments, the number of the data input terminals 1033 included in the multiplexer 103 may not match the number of the communication interfaces 104, that is, the number of the data input terminals 1033 may be equal to or greater than the number of the communication interfaces 104. Therefore, more measurement protection devices can be connected with the multiplexer 103 through the communication interface 104, and meanwhile, the measurement protection devices are plug-and-play and convenient to maintain because communication addresses do not need to be set for each measurement protection device.

Alternatively, the multiplexer 103 is an integrated chip of a 1-out-of-4 multiplexer.

It should be noted that, commonly used multiplexers include 2 to 1, 4 to 1, 8 to 1, 16 to 1, and the like, which are not limited to the above, and when there are more measurement protection devices connected, the above multiplexers may further extend 32 to 1, 64 to 1, and the like.

FIG. 3 is a schematic diagram of a multiplexer gating scheme according to an embodiment of the present application; as will be understood in conjunction with fig. 2 and fig. 3, in the present embodiment, the multiplexer 103 is an integrated chip of a 1-out-of-4 multiplexer, that is, as shown in fig. 2, the multiplexer 103 includes 4 data input terminals 1033, and each data input terminal 1033 includes a group of communication terminals, for example: (a0, B0), (a1, B1), (a2, B2), (A3, B3), or the like, and each communication interface 104 is connected to the multiplexer 103 via one data input 1033. At the same time, the multiplexer 103 controls one of the communication interfaces 104 to be conducted with the connection path of the processor 102. The control terminal 1031 may be a two-bit input address port (C0, C1), the output terminal 1032 may also include 2 communication terminals (AN, BN), and the number of the data input terminals 1033 matches the number of bits of the input address port included in the control terminal 1031. When the control terminal 1031 includes one input address port, the number of corresponding data input terminals 1033 is 2; when the input address port included in the control terminal 1031 is two bits, the number of the corresponding data input terminals 1033 is 4; when the control terminal 1031 includes three input address ports, the number of the corresponding data input terminals 1033 is 8, and so on, to determine the number of the data input terminals 1033. The number of communication terminals included in each data input terminal 1033 corresponds to the number of communication terminals included in the output terminal 1032, and when the number of communication terminals included in the output terminal 1032 is 2, the number of communication terminals included in each data input terminal 1033 is also 2.

Alternatively, the processor 102 may transmit an input address to the multiplexer 103 according to a combination of two-bit input addresses as shown in table 1 below, and the multiplexer 103 selects a communication interface corresponding to the input address from the plurality of communication interfaces 104 according to the input address and turns on a connection path between the communication interface and the processor 102.

TABLE 1

As can be seen from table 1, when the input address (CO, C1) is (0, 0), the multiplexer 103 controls the connection paths of the communication interface a corresponding to (a0, B0) and the processor 102 to be on, and at this time, the connection paths of the communication interface B, the communication interface C, the communication interface d and the processor 102 are all off. Similarly, when the input address (CO, C1) is (0, 1), the multiplexer 103 controls the connection path between the communication interface B corresponding to (a1, B1) and the processor 102 to be conductive; when the input address (CO, C1) is (1, 0), the multiplexer 103 controls the connection path of the communication interface C corresponding to (a2, B2) and the processor 102 to be conductive; when the input address (CO, C1) is (1, 1), the multiplexer 103 controls the communication interface d corresponding to (A3, B3) to be electrically connected to the connection path of the processor 102. Thus, the time-division multiplexing gating function of the multiplexer can be realized.

Alternatively, when the communication interface a is conducted with the connection path of the processor 102, the processor 102 may implement a communication connection with a measurement protection device connected with the communication interface a, and collect load information from the measurement protection device. Optionally, when the communication interface b, the communication interface c, and the communication interface d are respectively conducted with the connection path of the processor 102, the processing procedure when the communication interface a is conducted with the connection path of the processor 102 is similar, and is not described in detail here.

Optionally, the communication interface 104 is a serial transmission interface. Optionally, the serial transmission interface is a class a interface of a universal serial bus USB.

Generally, the communication interface 104 may be a common connection terminal, and it is necessary to pay attention to the sequence of the lines during the connection process to avoid connection errors and blocking the conduction of the connection path.

In this embodiment, the communication interface 104 adopts a USB type a interface, and when the communication interface 104 is connected to the measurement protection device, a USB data line may be used for connection, so that plug and play can be conveniently implemented, and the communication efficiency is improved.

Optionally, the measurement protection device is a circuit breaker.

Optionally, in this embodiment, the measurement protection device may be a molded case circuit breaker, and certainly, in practical application, the measurement protection device may also be a small intelligent circuit breaker, a frame circuit breaker, a dual power supply, an electric energy meter, and other devices, and here, no specific limitation is made.

Alternatively, the measurement and protection device may measure information of the load connected thereto, such as: measuring the voltage, the current, the power consumption and the like of the load, wherein the load operation state can comprise: a load opening and closing state (an opening state or a closing state), a fault/alarm state and the like; the event record may include: and recording information such as fault recording, alarm recording, switching-on and switching-off recording and the like. On one hand, the processor 102 may collect the load information measured by the measurement protection device from the measurement protection device, and control the display 101 to display the collected load information; on the other hand, the measuring and protecting device can also judge the safety condition of the load circuit according to the load information obtained by measurement, so that the fault circuit can be cut off in time, and the safe operation of the equipment can be guaranteed.

In summary, the load information display device provided in this embodiment includes a display, a processor, a multiplexer, and a plurality of communication interfaces, where the display is connected to the processor, the processor is connected to the multiplexer, the multiplexer is connected to the plurality of communication interfaces, each communication interface is connected to one measurement protection device, and the multiplexer is used to control connection or disconnection of a connection path between the multiplexer and the plurality of communication interfaces under the control of the processor. The processor is communicated with only one measurement protection device by controlling the multiplexer at the same moment, the same address can be used by each measurement protection device, different communication addresses do not need to be set for each measurement protection device, and therefore the time division multiplexing and multiplexing functions are achieved, equipment is maintained more conveniently, and maintenance efficiency is high.

Fig. 4 is a schematic diagram of a display system according to an embodiment of the present application. As shown in fig. 4, the display system 200 includes a plurality of measurement protection devices 201, and the load information display apparatus 100, wherein each communication interface 104 in the load information display apparatus 100 is connected to one measurement protection device 201.

Optionally, the specific working principle and working manner of the display system 200 are the same as those of the load information display apparatus 100 described above, and the generated technical effects are also similar, which can be understood by referring to the above specific embodiments, and are not described in detail herein.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A load information display apparatus characterized by comprising: a display, a processor, a multiplexer, and a plurality of communication interfaces;

2. The load information display device according to claim 1, wherein the multiplexer has a control terminal, an output terminal, and a plurality of data input terminals; the control end and the output end are respectively connected with the processor, and each data input end is connected with one communication interface;

3. The load information display device according to claim 1, wherein the multiplexer is configured to alternately control the connection paths of the communication interfaces to be turned on and the connection paths of the other communication interfaces to be turned off under the control of the processor.

4. The load information display device according to claim 2, wherein the number of the data input terminals is greater than or equal to the number of the communication interfaces.

5. The load information display device according to claim 1, wherein the multiplexer is an integrated chip of a 1-out-of-4 multiplexer.

6. The load information display device according to claim 1, wherein the communication interface is a serial transmission interface.

7. The load information display device according to claim 6, wherein the serial transmission interface is a class a interface of a Universal Serial Bus (USB).

8. The load information display device according to any one of claims 1 to 6, wherein the measurement protection means is a circuit breaker.

9. The load information display device according to any one of claims 1 to 6, wherein the load information includes at least one of: voltage, current, power consumption, electric energy, power consumption frequency, power factor, harmonic, load running state, event record.

10. A display system, comprising: a plurality of measurement and protection devices, and a load information display apparatus as claimed in any one of claims 1 to 9, wherein each communication interface of the load information display apparatus is connected to one of the measurement and protection devices.