CN202978227U

CN202978227U - Mine-used magnetic starter switch microcomputer monitoring and protecting device

Info

Publication number: CN202978227U
Application number: CN 201220627225
Authority: CN
Inventors: 葛学海; 谢凡
Original assignee: KAIFENG JINSHI SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: KAIFENG JINSHI SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2012-11-23
Filing date: 2012-11-23
Publication date: 2013-06-05
Anticipated expiration: 2022-11-23

Abstract

The utility model relates to a mine-used magnetic starter switch microcomputer monitoring and protecting device. The device is applicable to the protection, control and management of an underground coal mine power supply system magnetic starter, and has remote control, remote signaling, remote measuring, remote regulation and logical sequence control functions. The device of the utility model comprises a microcomputer processing module, a logic control module, an infrared remote control receiving module, a motor logic starting module, a communication module, a display module, an SPI E2PROM memory module, a signal input unit and a signal output unit. According to the mine-used magnetic starter switch microcomputer monitoring and protecting device of the utility model, bus voltage load current can be acquired through an A/D sampling module; whether a fault occurs can be judged through the operation of the microcomputer processing module; when a fault occurs in a load line, the line can be cut off through a signal output module, and the operation of other motors in a group are stopped; under a normal operating condition, on-line staring and operation of a plurality sets of equipment such as single-machine equipment, double-machine equipment and a multiple-machine equipment can be realized; and the remote control, remote signaling, remote measuring and remote regulation functions can be realized through the communication module.

Description

A kind of mine magnetic starter switch microcomputer monitor and protection device

Technical field

The utility model relates to the protective device of electric power system, particularly relates to a kind of magnetic starter switch microcomputer monitor and protection device for the colliery underground power supply system.

Background technology

Along with the development of coal industry, scientific and technical makes rapid progress, and intelligence control system has obtained using more and more widely, also has higher requirement.As the important motor that drives actuator, its start mode is subject to numerous technical staff's great attention, should lay good basis for Based Intelligent Control, to the impact of electrical network, also will constantly protect motor simultaneously when reducing motor starting again.We develop the utility model for this problem.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of mine magnetic starter switch microcomputer monitor and protection device, overcomes the defective of prior art.

The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of mine magnetic starter switch microcomputer monitor and protection device comprises that MICROCOMPUTER PROCESSING module, Logic control module, infrared remote control receiver module, motor logic start module, communication module, display module, SPI E ²PROM memory module, signal input unit and signal output unit, described infrared remote control receiver module be connected motor logic and start module and be connected with the MICROCOMPUTER PROCESSING module respectively, described communication module is connected with the MICROCOMPUTER PROCESSING module by optical coupling module, described display module, described SPI E ²PROM memory module, described signal input unit and the signal output unit of being connected are connected with the MICROCOMPUTER PROCESSING module by Logic control module respectively.The MICROCOMPUTER PROCESSING module is used for the signal that receives from modules is carried out calculation process and exports operation result, and Logic control module is responsible for the signal processing priority sequence that modules sends over, and guarantees the work of MICROCOMPUTER PROCESSING module stability; The infrared remote control receiver module is used for receiving infrared signal, can carry out Long-distance Control, motor logic starts module the magnetic starter enable logic is sequentially controlled, communication module can be realized remote control, remote signalling, remote measurement and remote regulating function, display module are used for showing electric current and voltage information, motor status information, the information such as fault message, SPI E ²The PROM memory module is except the security parameter of having stored the protection motor; stored in addition the parameter that after the startup of motor on-line execute, machine is delayed time, the online uses such as the time-delay of high speed winding, blow-out time-delay are delayed time, started to startup low speed slave; optical coupling module; play the insulation blocking effect in device; when communication module breaks down; the safety of the MICROCOMPUTER PROCESSING module of the protection optical coupling module other end makes it unaffected.

Further, described signal input unit comprises signal input module, A/D sampling module and V/F modular converter, described signal input module connects by optical coupling module andlogic control module and is connected with the MICROCOMPUTER PROCESSING module by Logic control module, described A/D sampling module be connected the V/F modular converter and be connected with the MICROCOMPUTER PROCESSING module by Logic control module; Signal input module is connected with the motor position switch, be used for input motor position information, the A/D acquisition module is responsible for gathering voltage and current signal, and the signal of telecommunication is converted to digital signal sends to the MICROCOMPUTER PROCESSING module, and the V/F module is responsible for the voltage signal of telecommunication is converted to frequency signal.

Further, described signal output unit comprises signal output module and D/A conversion output module, described signal output module connects by optical coupling module andlogic control module, then be connected with the MICROCOMPUTER PROCESSING module by Logic control module, described D/A conversion output module is connected with the MICROCOMPUTER PROCESSING module by Logic control module, signal output module receives the fault-signal of MICROCOMPUTER PROCESSING module arithmetic judgement, then line disconnection, D/A conversion output module is converted to the signal of telecommunication with digital signal, and is used for other circuit.

The beneficial effects of the utility model are: by the collection of electric current and voltage acquisition module realization to the busbar voltage load current; computing judges whether fault through microprocessor; when breaking down, supply line passes through the signal output module line disconnection; communication module can be realized remote control, remote signalling, remote measurement and remote regulating function; can set suitable definite value by input module; to the starting of mining motor with stop protecting, multiple electric motor starting pattern can be set.

Description of drawings

Fig. 1 is the utility model mine magnetic starter switch microcomputer monitor and protection device schematic diagram;

Fig. 2 is the utility model public principles block diagram.

Embodiment

Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example only is used for explaining the utility model, is not be used to limiting scope of the present utility model.

As shown in Figure 2, the utility model is by the collection of A/D sampling module realization to the busbar voltage load current, judge whether fault through the MICROCOMPUTER PROCESSING module arithmetic, when the load circuit when breaking down by the signal output module line disconnection and stop the operation that this organizes other motors, can realize the online startup operation of the multiple devices such as unit, two-shipper, multimachine under normal operating condition, communication module can be realized remote control, remote signalling, remote measurement and remote regulating function.

The utility model embodiment one is used for containing under the coal mine of explosive gas atmosphere (methane, coal dust); exchanging 50Hz; voltage is in the supply line of 3300V, 1140V, 660V or 380V; flame-proof type three-phase squirrel cage type AC asynchronous motor is started, stops, being reversed and joins the controls such as platform; and can transship to motor and supply line, the kinds of protect such as overcurrent, disconnected phase, imbalance, decompression, earth leakage search/lockout, overvoltage absorption; control mode can adopt to be controlled or distant place control on the spot, and can commutate when shutting down.

Mine magnetic starter switch microcomputer monitor and protection device inside is provided with respectively 3 groups of totally 6 relays; the contact of each relay is controlled 2 and is often opened 2 normally closed contacts; complete respectively earth leakage search/lockout contact, protection blocking contact, start leave from office machine contact, start the 3rd machine contact, far control many groups such as combined floodgate contact and control contacts, for the logic control that realizes complete machine is laid a good foundation.

mine magnetic starter switch microcomputer monitor and protection device internal hardware is respectively by multichannel AC industrial power module, power supply front-end filtering module, the CPU processing module, the liquid crystal drive display module, the man-machine interaction button is selected module, the AD multi-channel sampling switches the maintenance module, the CPLD universal logic module, analog input signal conversion module, the additional dc power supply detection module, the PLC Logic control module, the relay array module, the light-coupled isolation signal input module, signal input front end immunity module, the protection calculation module, the asynchronous communication module.

The multichannel AC industrial power module front-end filtering module of mine magnetic starter switch microcomputer monitor and protection device internal hardware consists of a common-mode filter by electric capacity and inductance; its effect is: resist the electromagnetic interference on electrical network; the electromagnetic interference that produces when also switching power circuit itself being worked simultaneously has resistancing action, and is not contaminated to guarantee electrical network.Formed common bridge rectifier, filter circuit by four diodes and an electric capacity, the 220V alternating voltage of input has been converted to+direct voltage of about 300V, for switching power circuit.

What the multichannel AC industrial power module of mine magnetic starter switch microcomputer monitor and protection device internal hardware adopted is present advanced person's high power switching power supply control chip in the world; the highest 650V of this chip operating voltage; electric current 2A; power output 32-52W; concussion frequency 100K hertz; inside is integrated with high-voltage field effect power switch pipe, oscillating circuit, pulse-width modulation circuit, SS (soft start) control circuit etc.Have perfect overvoltage, overload flow, under-voltage, overheatedly close protection and under-voltage locking, autoboot is moving and the function such as low-power consumption standby.

The multichannel AC industrial power module of mine magnetic starter switch microcomputer monitor and protection device internal hardware has 6 tunnel independently power supply outputs; be respectively+5V; + 12V ,-12V ,+24V1; + 24V2; + 36V ,+36V be as the power supply of additional dc power supply detection module, by the insulation against ground resistance in direct current+36V computational load loop; the another one function of simultaneously+36V is isolated the alternating voltage component exactly, for the resistance that accurately calculates load resistance is laid a solid foundation.

The above is only preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., within all should being included in protection range of the present utility model.

Claims

1. a mine magnetic starter switch microcomputer monitor and protection device, is characterized in that comprising, MICROCOMPUTER PROCESSING module, Logic control module, infrared remote control receiver module, motor logic start module, communication module, display module, SPI E ²PROM memory module, signal input unit and signal output unit, described infrared remote control receiver module be connected motor logic and start module and be connected with the MICROCOMPUTER PROCESSING module respectively, described communication module is connected with the MICROCOMPUTER PROCESSING module by optical coupling module, described display module, described SPIE ²PROM memory module, described signal input unit and the signal output unit of being connected are connected with the MICROCOMPUTER PROCESSING module by Logic control module respectively.

2. mine magnetic starter switch microcomputer monitor and protection device as claimed in claim 1; it is characterized in that; described signal input unit comprises signal input module, A/D sampling module and V/F modular converter; described signal input module connects by optical coupling module andlogic control module and is connected with the MICROCOMPUTER PROCESSING module by Logic control module, described A/D sampling module be connected the V/F modular converter and be connected with the MICROCOMPUTER PROCESSING module by Logic control module.

3. mine magnetic starter switch microcomputer monitor and protection device as claimed in claim 1; it is characterized in that; described signal output unit comprises signal output module and D/A conversion output module; described signal output module connects by optical coupling module andlogic control module; then be connected with the MICROCOMPUTER PROCESSING module by Logic control module, described D/A conversion output module is connected with the MICROCOMPUTER PROCESSING module by Logic control module.