CN107134390B

CN107134390B - Intelligent control and protection switch

Info

Publication number: CN107134390B
Application number: CN201710534881.9A
Authority: CN
Inventors: 连广志; 寇根双
Original assignee: SHIJIAZHUANG FURUN NEW TECHNOLOGY CO LTD
Current assignee: Shijiazhuang Fuxin Power Technology Co.,Ltd.
Priority date: 2017-07-03
Filing date: 2017-07-03
Publication date: 2021-07-27
Anticipated expiration: 2037-07-03
Also published as: CN107134390A

Abstract

The invention discloses an intelligent control and protection switch, which comprises a shell, a control mainboard and a relay bottom plate, wherein the shell comprises a wiring terminal, an indicator lamp, a nixie tube display and a key; the control mainboard comprises an ARM 32-bit high-speed single chip microcomputer, a power supply module, a signal conditioning module, a protection module, a driving module, a 2-channel main contact output module, a storage module, a human-computer interaction module and a communication module; the relay bottom plate comprises a magnetic latching relay and a sampling circuit; the mechanical structure is replaced by the electronic structure, the voltage synchronization technology is adopted when the switch is switched off, and the current synchronization technology is adopted when the switch is switched off, so that the arc discharge phenomenon is thoroughly eliminated, arc extinguishing devices are saved, the switch structure is simplified, the complexity of equipment is greatly reduced, the integration level is higher, the size is smaller, and the cost is reduced to the lowest; the integrated circuit, the electronic PCB technology and the SMT automatic chip mounting technology are adopted, and the device is moisture-proof, high-temperature resistant, high in reliability, compact in space and simple in structure.

Description

Intelligent control and protection switch

Technical Field

The invention relates to the technical field of switches, in particular to an intelligent control and protection switch.

Background

The traditional CPS (control and protection switch) is a novel integrated electric appliance which is used for safe and reliable operation of a power distribution network, a control system and a motor in the current market, integrates a breaker, a contactor, a starter and a fuse into a whole and realizes the functions of control and protection. The intelligent control system mainly comprises a base, an electromagnetic mechanism, a main loop contact group, an auxiliary contact, an MCU intelligent control detection system and an electronic release system, wherein a large part of the intelligent control system is of a mechanical structure, the structure is complex and heavy, and the large-capacity CPS is overlarge in size and high in cost.

Therefore, in order to better solve the above problems, it is necessary to develop a control and protection switch that can realize the development mode of high performance, high reliability, miniaturization, digitization, intelligence, and modularization by integrating most functions on a circuit board and only switching contacts into and out of a mechanical structure, so as to meet the market demand.

Disclosure of Invention

The invention aims to provide an intelligent control and protection switch, which integrates most functions on a circuit board, only contacts are separated and combined to form a mechanical structure, and the development mode of high performance, high reliability, miniaturization, digitalization, intellectualization and modularization is realized; the control and protection device is highly digital, intelligent and simple in structure, all mechanical control structures with complex structures are replaced by electronic structures, and the control and protection functions of the control and protection device can be inherited and expanded, so that the problems in the background art are solved.

In order to achieve the purpose, the invention provides the following technical scheme:

an intelligent control and protection switch comprises a shell, a control mainboard and a relay bottom plate, wherein the shell comprises a wiring terminal, an indicator light, a nixie tube display and a key; the control mainboard comprises an ARM 32-bit high-speed single chip microcomputer, a power supply module, a signal conditioning module, a protection module, a driving module, a 2-channel main contact output module, a storage module, a human-computer interaction module and a communication module; the relay bottom plate comprises a magnetic latching relay and a sampling circuit; the wiring terminal comprises a main loop wiring, an auxiliary contact, a dry contact output and a communication terminal.

As a further scheme of the invention: the wiring terminal is installed on the side face of the shell, a nixie tube display is installed on the shell, an indicator lamp is arranged on the shell on the upper side of the nixie tube display, and a button is installed on the shell on the lower side of the nixie tube display.

As a further scheme of the invention: the ARM 32-bit high-speed single-chip microcomputer controls the driving module to drive the magnetic latching relay, the magnetic latching relay is communicated with a load, the signal sampling circuit samples signals of the load, the signal sampling circuit samples the signals of the load, and the single-chip microcomputer controls the driving module again to drive the relay according to a signal processing result.

Compared with the prior art, the invention has the beneficial effects that: according to the intelligent control and protection switch, a mechanical structure is replaced by an electronic structure, a voltage synchronization technology is adopted when the switch is closed, a current synchronization technology is adopted when the switch is disconnected, and an arc discharge phenomenon is thoroughly eliminated, so that an arc extinguishing device is saved, the switch structure is simplified, the complexity of equipment is greatly reduced, the integration level is higher, the size is smaller, and the cost is reduced to the minimum; meanwhile, the reliability, control and protection accuracy of the equipment are greatly improved; the integrated circuit, the electronic PCB technology and the SMT automatic chip mounting technology are adopted, and the device is moisture-proof, high-temperature resistant, high in reliability, compact in space and simple in structure.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the control main board according to the present invention.

Fig. 3 is a schematic structural diagram of a relay main board according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, in the embodiment of the present invention, an intelligent control and protection switch includes a housing 1, a control motherboard 2, and a relay substrate 3, where the housing 1 includes a connection terminal 1-1, an indicator lamp 1-2, a nixie tube display 1-3, and a key 1-4; the control mainboard 2 comprises an ARM 32-bit high-speed single chip microcomputer 2-1, a power supply module 2-2, a signal conditioning module 2-3, a protection module 2-4, a driving module 2-5, 2-path main contact point outputs 2-6, a storage module 2-7, a man-machine interaction module 2-8 and a communication module 2-9; the relay bottom plate 3 comprises a magnetic latching relay 3-1 and a sampling circuit 3-2.

The wiring terminal 1-1 is arranged on the side face of the shell 1, a nixie tube display 1-3 is arranged on the shell 1, an indicator lamp 1-2 is arranged on the shell 1 on the upper side of the nixie tube display 1-3, and a key 1-4 is arranged on the shell 1 on the lower side of the nixie tube display 1-3; the wiring terminal 1-1 comprises a main loop wiring, an auxiliary contact, a dry contact output and a communication terminal; the wiring terminal 1-1, the indicator light 1-2, the nixie tube display 1-3 and the key 1-4 on the shell 1 are respectively and electrically connected with the control mainboard 2.

By adopting the technical scheme, a base, an electromagnetic mechanism, a main loop contact group, an auxiliary contact and an electronic release system are structurally omitted, wiring is concentrated on a wiring terminal 1-1, and the wiring terminal 1-1 comprises a main loop wiring, an auxiliary contact, a dry contact output and a communication terminal; the electromagnetic mechanism, the main loop contact group and the electronic release system are all replaced by a relay bottom plate 3 and used for switching on or breaking off a main loop, the basic principle is that an ARM 32-bit high-speed single chip microcomputer controls a driving module 2-5 to drive a magnetic latching relay 3-1, the magnetic latching relay 3-1 is communicated with a load, a signal sampling circuit 3-2 samples a signal of the load, a signal conditioning module 2-3 conditions the signal through amplification, filtering and the like, then the signal is sent to the single chip microcomputer to be processed, and the single chip microcomputer controls the driving module 2-5 to drive the magnetic latching relay 3-1 according to a signal processing result, so that the intelligent control of the load is realized. Meanwhile, a voltage synchronization technology is adopted when the switch is switched off, a current synchronization technology is adopted when the switch is switched off, and the arc discharge phenomenon is thoroughly eliminated, so that an arc extinguishing device is saved, the switch structure is simplified, the weight is reduced, and the power consumption is greatly reduced due to the fact that a magnetic latching relay is adopted as a switch contact, the working temperature rise is stable, the space is compact, and the switch has a certain explosion-proof function due to the adoption of a sealing technology, and is safer to use and wider in range.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some simple modifications, equivalent changes and modifications to some technical features without creative efforts based on the disclosed technical contents, and all fall into the technical solution of the present invention.

In the description of the present specification, it is to be noted that, unless explicitly stated or limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. An intelligent control and protection switch comprises a shell, a control mainboard and a relay bottom plate, and is characterized in that the shell comprises a wiring terminal, an indicator light, a nixie tube display and a key; the control mainboard comprises an ARM 32-bit high-speed single chip microcomputer, a power supply module, a signal conditioning module, a protection module, a driving module, a 2-channel main contact output module, a storage module, a human-computer interaction module and a communication module; the relay bottom plate comprises a magnetic latching relay and a sampling circuit; the wiring terminal comprises a main loop wiring, an auxiliary contact, a dry contact output and a communication terminal;

the wiring terminal is arranged on the side face of the shell, a nixie tube display is arranged on the shell, an indicator lamp is arranged on the shell on the upper side of the nixie tube display, and a key is arranged on the shell on the lower side of the nixie tube display;

the ARM 32-bit high-speed single-chip microcomputer controls the driving module to drive the magnetic latching relay, the magnetic latching relay is communicated with a load, the signal sampling circuit samples signals of the load, the signals are sent to the single-chip microcomputer to be processed, and the single-chip microcomputer controls the driving module to drive the relay according to the signal processing result; the voltage synchronization technology is adopted when the switch is closed, and the current synchronization technology is adopted when the switch is opened.