CN104733238A - Intelligent circuit breaker with Modbus protocol interface sockets - Google Patents

Abstract

The invention discloses an intelligent circuit breaker with Modbus protocol interface sockets. The intelligent circuit breaker comprises a molded case circuit breaker body and a communication protocol converter; the molded case circuit breaker body comprises a base and an upper cover, and the upper cover comprises a panel and lateral walls; the panel and the lateral walls are provided with connected notches, and a first communication interface socket is arranged in the upper cover; a first communication interface socket and a second communication interface socket are arranged on a shell of the communication protocol converter; a liquid crystal display, a debugging button and two signal indication lamps are arranged on the shell of the communication protocol converter; the liquid crystal display, the debugging button and the panel of the upper cover are located on the same side of the upper cover, and the liquid crystal display and the debugging button essentially become a part of an operation panel of the molded case circuit breaker body. The first communication interface sockets are the Modbus protocol interface sockets, and the second communication interface socket is a CAN protocol interface socket or a Devicenet protocol interface socket or a TCP protocol interface socket or a Prifibus protocol interface socket. The intelligent circuit breaker is relatively compact and reasonable in structure.

Description

An Intelligent Circuit Breaker with Modbus Protocol Interface Socket

technical field

The application of the present invention is a divisional application with the filing date of "December 31, 2012", the application number of "2012105913464", and the patent title of "A Smart Circuit Breaker".

Background technique

Compared with most other buses, the Modbus bus itself has many limitations, mainly reflected in low efficiency, poor real-time performance of the system, low communication reliability, high maintenance costs, complex network engineering debugging, unsatisfactory transmission distance, single There are few nodes that can be connected to the bus, and the application is not flexible. However, in the application of industrial field bus, RS485 used by Modbus protocol has a slight advantage in hardware cost and development difficulty, and it is still widely used in China, so it is unrealistic to completely abandon Modbus at this stage, so in practical applications Most of the smart circuit breakers are developed and designed using the Modbus protocol, and then applied to other bus networks through a protocol converter. In addition, the current smart circuit breakers all use external protocol converters for protocol conversion. Good consistency, for example, the performance parameters and settings of smart circuit breakers from different manufacturers are different, and the performance and price of protocol converters from different manufacturers are also quite different, making it difficult for customers to find a circuit breaker that is more suitable for them. And the supporting protocol converter, resulting in the final cost and performance are always unsatisfactory.

Contents of the invention

The purpose of the present invention is to provide an intelligent circuit breaker with a Modbus protocol interface socket.

The technical solution for realizing the purpose of the present invention is: an intelligent circuit breaker with a Modbus protocol interface socket, including a molded case circuit breaker body, the molded case circuit breaker body includes a base and an upper cover, and the upper cover includes a panel and a side wall; the panel and the side wall The wall is provided with connected gaps, and the upper cover is provided with a first communication interface socket set opposite to the gaps on the side wall; the smart circuit breaker also includes a communication protocol converter; the inner side of the communication protocol converter housing is also close to One end of the first communication interface socket is located inside the upper cover, and is provided with a first communication interface plug matched with the first communication interface socket. The second communication interface socket; the housing of the communication protocol converter is provided with a liquid crystal display, a debugging button and two signal indicator lights; one of which is a signal uplink indicator light, and the other is a signal downlink indicator light; the communication protocol The liquid crystal display screen and the debugging button on the converter housing are located on the same side of the upper cover as the upper cover panel, making it essentially a part of the operation panel of the molded case circuit breaker body; the first communication interface socket is a Modbus protocol interface socket , the second communication interface socket is a CAN protocol interface socket or a Devicenet protocol interface socket or a TCP protocol interface socket or a Profibus protocol interface socket.

The structure of the present invention is more compact and reasonable, and the installation and use of the communication protocol converter used are more convenient, and its application range is wider, and it is also convenient for customers to purchase.

Description of drawings

Fig. 1 is a kind of three-dimensional structure schematic diagram of the first structure of the present invention;

Fig. 2 is a schematic diagram of a three-dimensional structure of a communication protocol converter in the smart circuit breaker shown in Fig. 1;

Fig. 3 is a schematic diagram of a three-dimensional structure of the communication protocol converter shown in Fig. 2 viewed from another angle;

Fig. 4 is a schematic diagram of an internal structure of the intelligent circuit breaker shown in Fig. 1 .

Detailed ways

(Example 1)

Figures 1 to 4 show the first specific implementation of the present invention, wherein Figure 1 is a schematic diagram of a three-dimensional structure of the first structure of the present invention; Figure 2 is a schematic diagram of the communication protocol converter in the intelligent circuit breaker shown in Figure 1 A schematic diagram of a three-dimensional structure; FIG. 3 is a schematic diagram of a three-dimensional structure of the communication protocol converter shown in FIG. 2 viewed from another angle; FIG. 4 is a schematic diagram of an internal structure of the smart circuit breaker shown in FIG. 1 .

This embodiment is an intelligent circuit breaker, including a molded case circuit breaker body 1 , a remote action actuator (not shown in the figure) and a communication protocol converter 2 fixed on the molded case circuit breaker body 1 .

The molded case circuit breaker body includes a base 11 and an upper cover 12, the upper cover includes a panel 121 and a side wall 122; the panel and the side wall are provided with a connected gap 123, and the upper cover is provided with a The first communication interface socket 14 is set in the gap.

The communication protocol converter is fixed in the gap. The inboard end of the communication protocol converter housing, that is, the end close to the first communication interface socket 14, is located inside the upper cover, and is provided with a first communication interface plug 26 matched with the first communication interface socket. The end, that is, the end away from the first communication interface socket 14, is provided with a second communication interface socket 27; the housing of the communication protocol converter is provided with a liquid crystal display 21, a debugging button 22 and two signal indicator lights 23. One of them is the indicator light of signal uplink, and the other is the indicator light of signal downlink. The liquid crystal display and debugging buttons on the housing of the communication protocol converter are located on the same side of the upper cover as the upper cover panel, making them essentially a part of the operation panel of the molded case circuit breaker body 1 .

The side wall of the upper cover is respectively provided with a guide slider 13 on the walls on both sides of the gap, and the communication protocol converter housing is respectively provided with a guide chute 24 at the two ends facing the guide slider. . The cooperative guidance of the guide chute and the guide slider makes the communication protocol converter housing reciprocate along the direction perpendicular to the side wall with the notch in the upper cover. In practice, the shapes and specific positions of the guide slider 13 and the guide chute 24 can be changed, but all belong to the protection scope of the present invention.

The housing of the communication protocol converter is provided with two positioning pins 25, and the base or the side wall is provided with a positioning hole matched with the positioning pins. When the communication protocol converter slides into place, the positioning pins can be plugged into the Locate the hole to secure the protocol converter housing in the notch.

In this embodiment, the positioning pin is telescopically arranged on the housing of the communication protocol converter. When each positioning pin is retracted, its bottom is inserted into the corresponding positioning hole, thereby positioning the communication protocol converter in the gap. After pressing the positioning pins again, the positioning pins will pop out from the positioning holes, so that the communication protocol converter can be disassembled.

The upper cover is also provided with a return spring 15 for ejecting the communication protocol converter housing along the extending direction of the guide chute, a slide hole 16 for accommodating the return spring, and a slide bar 17 with an anti-off part 171; The slide bar is located in the slide hole, the return spring is sleeved on one end of the slide bar, and the other end of the slide bar abuts against the inner end of the communication protocol converter housing. When the positioning pin is no longer inserted into the positioning hole, the communication protocol converter will be pushed out by the slide bar, so that it can be removed smoothly.

In this embodiment, the communication protocol converter housing is away from the outer end of the first communication interface socket, and is flush with the side wall with a gap in the upper cover, and the second communication interface socket is arranged on the communication protocol converter. on the outer end face.

In this embodiment, the first communication interface socket is a Modbus protocol interface socket, specifically a commonly known serial interface socket. The second communication interface socket is a CAN protocol interface socket or a Devicenet protocol interface socket or a TCP protocol interface socket or a Profibus protocol interface socket.

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. However, the obvious changes or changes derived from the essential spirit of the present invention still belong to the protection scope of the present invention.

Claims (1)

1. have an intelligent breaker for Modbus protocol interface socket, comprise breaker of plastic casing body, breaker of plastic casing body comprises base and upper cover, and upper cover comprises panel and sidewall; It is characterized in that: panel and sidewall are provided with the breach be connected, in upper cover, be provided with the first communication interface socket that the breach on positive oppose side wall is arranged; This intelligent breaker also comprises communication protocols converter; Namely the medial extremity of communication protocols converter housing is also positioned at upper cover inside close to one end of described first communication interface socket, and be provided with the first communication interface plug matched with the first communication interface socket, its hull outside end also namely away from one end of the first communication interface socket, is provided with second communication interface socket; Described communication protocols converter housing is provided with LCDs, debugging button and two signal lamps; One of them is signal uplink indicator light, and another is signal downlink indicator light; LCDs on described communication protocols converter housing is positioned at upper cover the same side with debugging button and top cover of faceplate, makes it become a part for breaker of plastic casing body guidance panel in itself; Described first communication interface socket is Modbus protocol interface socket, and described second communication interface socket is CAN protocol interface socket or Devicenet protocol interface socket or Transmission Control Protocol interface socket or Profibus protocol interface socket.