CN213843423U - Online monitoring system for underground equipment of coal mine - Google Patents

Abstract

The utility model provides a colliery is equipment on-line monitoring system in pit, including a plurality of with colliery is the information collection and recording device that corresponds the connection and with all information collection and recording device communication connection's host computer, wherein information collection and recording device includes microprocessor, and microprocessor electric connection has storage module, power module, collection module and communication module, and storage module includes ferroelectric memory and solid-state memory, and collection module includes AD conversion module, communication module and host computer communication connection. The utility model provides a colliery is equipment on-line monitoring system in pit can monitor the running state of colliery underground equipment high-efficiently and accurately.

Description

Online monitoring system for underground equipment of coal mine

Technical Field

The utility model relates to a coal mine equipment field, specific colliery is equipment on-line monitoring system in pit that says so.

Background

The coal mine is a unit mainly based on production, so the stability of equipment for operating the coal mine determines the production benefit and the investment and maintenance cost, and some key important equipment even plays a role in determining the fate of an enterprise, such as a fan fails and stops wind, so that the production is influenced, even casualties occur, and the loss is immeasurable. Therefore, how to sense the failure of the equipment and avoid accidents caused by the failure of the equipment, particularly catastrophic accidents, is a problem which is always very important for coal mine technicians.

The operation condition states of the existing coal mine equipment are generally divided into a passive acceptance type and an active analysis type. The passive acceptance type is that the equipment is required to be overhauled and replaced when the equipment has a problem, and the passive acceptance type is mainly in the state of passively accepting the equipment without advanced detection technology and means. The active analysis type is an active coping mode, but at present, the method still adopts organs such as hands, eyes, noses, ears and the like by experienced technicians, and adopts means such as touch, sight, smell, hearing and the like to match parameters such as simple voltage and current to judge whether the equipment has problems. If the observation of temperature, sound, color and smell is abnormal, only some problems with light appearance can be solved due to different knowledge level, technical degree and experience of each person. Because the current equipment monitoring means is relatively laggard, the reason of the equipment problem can not be accurately judged when the equipment has a fault problem, and the loss caused by the reason is huge. Therefore, the detection means for improving the operation and the fault of the equipment has great significance for the safe operation of the coal mine production equipment.

SUMMERY OF THE UTILITY MODEL

In order to solve the deficiencies in the prior art, the utility model provides a colliery is equipment on-line monitoring system in pit can monitor the running state of colliery underground equipment high-efficiently and accurately.

In order to achieve the above object, the utility model discloses a concrete scheme does: the utility model provides a colliery is equipment on-line monitoring system in pit, including a plurality of with colliery is the information collection and recording device that corresponds the connection and with all information collection and recording device communication connection's host computer, wherein information collection and recording device includes microprocessor, and microprocessor electric connection has storage module, power module, collection module and communication module, and storage module includes ferroelectric memory and solid-state memory, and collection module includes AD conversion module, communication module and host computer communication connection.

The coal mine underground equipment online monitoring system is further optimized as follows: the communication module comprises a photoelectric isolation circuit and a bus interface circuit which are electrically connected, wherein the photoelectric isolation circuit is electrically connected with the microprocessor, and the bus interface circuit is in communication connection with the upper computer through a data bus.

The coal mine underground equipment online monitoring system is further optimized as follows: the bus interface circuit is set to be an RS485 interface circuit.

The coal mine underground equipment online monitoring system is further optimized as follows: the solid-state memory is set as an SD card.

The coal mine underground equipment online monitoring system is further optimized as follows: the power module comprises a first transformation element and a second transformation element, wherein the first transformation element is electrically connected with an external power supply, and the second transformation element is electrically connected with the first transformation element and the microprocessor.

Has the advantages that: the utility model discloses can monitor the running state of each colliery downhole equipment high-efficiently and accurately on line, and then realize the start-up analysis of colliery downhole equipment, no-load, overload operation analysis, equipment failure analysis, equipment operational aspect analysis etc. provide detailed operational data for equipment failure early warning and abnormal problem analysis, provide powerful help for guarantee production safety, high efficiency.

Drawings

FIG. 1 is a block diagram of the overall structure of the on-line monitoring system of the present invention;

FIG. 2 is a circuit diagram of a power supply module;

FIG. 3 is a circuit diagram of a filter circuit module;

FIG. 4 is a circuit diagram of an A/D conversion module;

FIG. 5 is a circuit diagram of a microprocessor;

FIG. 6 is a circuit diagram of a solid-state memory;

fig. 7 is a circuit diagram of a communication module.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 7, an online monitoring system for underground coal mine equipment comprises a plurality of information collecting and recording devices correspondingly connected with the underground coal mine equipment and an upper computer in communication connection with all the information collecting and recording devices, wherein each information collecting and recording device comprises a microprocessor, the microprocessor is electrically connected with a storage module, a power supply module, an acquisition module and a communication module, the storage module comprises a ferroelectric memory and a solid-state memory, the acquisition module comprises an a/D conversion module, and the communication module is in communication connection with the upper computer.

The microprocessor is the core of the information collecting and recording device and is used for controlling the collecting module to collect data, process the collected data, store the processed data into the storage module and communicate with the upper computer, and in the embodiment, the microprocessor adopts a single chip microcomputer with the model number of STM32F407VET 6.

In the storage module, the type of the ferroelectric memory is FM3316, and the ferroelectric memory integrates the functions of parameter storage, watchdog, real-time clock and power supply monitoring, so that the performance is reliable and the area of a printed board is saved; the solid-state memory selects an SD card, the read-write operation of data is realized through an SDIO interface of the microprocessor, and the SD card is fixed on the edge of the information acquisition and recording device through the card slot so as to be convenient for plugging and unplugging.

And the power supply module is used for supplying power for the work of other modules. In order to meet the requirements of different modules, the power module specifically comprises a first transformation element and a second transformation element, wherein the first transformation element is electrically connected with an external power supply, and the second transformation element is electrically connected with the first transformation element and the microprocessor. In the embodiment, the power supply module provides two voltage levels of 5V and 3.3V, the first transformation element adopts the Jinsheng AC/DC voltage module LD05-20B05, the external power supply obtains AC100V input and outputs DC5V/1A, and the second transformation element adopts AMS1117-3.3 to convert the 5V voltage output by the first transformation element into 3.3V and supply power for the microprocessor.

The acquisition module is used for acquiring original analog signals from underground equipment of a coal mine, the A/D conversion module adopts an AD7606-6, 16-bit 6 channel of an AD company for synchronous sampling, and a single power supply supplies power without an external conditioning loop. And the acquisition module further comprises a filter circuit module arranged between the A/D conversion module and the underground equipment of the coal mine, and is used for completing signal conversion and filtering of three-phase voltage and current signals of the underground equipment of the coal mine and modulating the signals into signals which can be accessed by the analog-to-digital conversion module. The voltage sampling range of the filter circuit module is set to be 0-150V, signals with the precision of 0.1% resistance voltage division as peak value 5V are introduced into an ADC analog channel after RC filtering, the current sampling range is 0-60A, the conversion from large current to small current signals is realized by adopting a 5A/2mA straight-through current transformer, the sampling is carried out by adopting 0.1% resistance, and the signals are introduced into the ADC analog channel after RC filtering.

The communication module comprises a photoelectric isolation circuit and a bus interface circuit which are electrically connected, wherein the photoelectric isolation circuit is electrically connected with the microprocessor, and the bus interface circuit is in communication connection with the upper computer through a data bus. In this embodiment, the bus interface circuit is provided as an RS485 interface circuit. In order to improve the safety of the communication module and ensure that the communication module can stably operate, the RS485 interface is set as an intrinsic safety type RS485 interface, a power supply module of the communication module is electrically isolated from a main power supply of the information acquisition and recording device through an isolation module, the voltage withstanding capability is not lower than 1500V, a +5V voltage output by the isolation module is converted into an intrinsic safety +5V power supply after being protected by a fixed current limiting resistor and a voltage clamp and is supplied to an RS485 interface chip, after the current of the fixed resistor, the voltage of P6KE6.8CA and the overcurrent protection treatment of MZ11 series thermistor VAC are carried out on an RS485 differential bus, the false access protection function of 220 strong voltage can be realized, and the MINIPEOT of MOXA company is adopted to realize the communication function of an Ethernet interface.

When the device is used, the microprocessor acquires original operation parameters of the underground coal mine equipment through the acquisition module, then analyzes and processes the original operation parameters to obtain actual operation parameters, then stores the actual operation parameters into the solid-state memory, and sends the actual operation parameters to the upper computer through the communication module, after the upper computer receives the actual operation parameters sent by all the information acquisition and recording devices, the upper computer can obtain the operation state of each underground coal mine equipment through summarizing and analyzing, further realizes the starting analysis, no-load, load and overload operation analysis, equipment fault analysis, equipment operation condition analysis and the like of the underground coal mine equipment, provides detailed operation data for equipment fault early warning and abnormal problem analysis, and provides powerful help for guaranteeing production safety and high efficiency. For different underground coal mine equipment, the actual operation parameters can be three-phase voltage, three-phase current, apparent power, active power, reactive power or power factors and the like.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. The utility model provides an online monitoring system of colliery underground equipment, its characterized in that, including a plurality of with colliery underground equipment corresponds the information collection and recording device of being connected and with all information collection and recording device communication connection's host computer, wherein the information collection and recording device includes microprocessor, and microprocessor electric connection has storage module, power module, collection module and communication module, and storage module includes ferroelectric memory and solid-state memory, and collection module includes AD conversion module, communication module and host computer communication connection.

2. The on-line monitoring system for underground coal mine equipment according to claim 1, wherein the communication module comprises an optoelectronic isolation circuit and a bus interface circuit which are electrically connected, wherein the optoelectronic isolation circuit is electrically connected with the microprocessor, and the bus interface circuit is in communication connection with the upper computer through a data bus.

3. The on-line monitoring system for underground coal mine equipment according to claim 2, wherein the bus interface circuit is set as an RS485 interface circuit.

4. The on-line monitoring system for underground coal mine equipment according to claim 1, wherein the solid-state memory is set as an SD card.

5. The on-line monitoring system for underground coal mine equipment according to claim 1, wherein the power module comprises a first voltage transformation element and a second voltage transformation element, wherein the first voltage transformation element is electrically connected with an external power supply, and the second voltage transformation element is electrically connected with the first voltage transformation element and the microprocessor.

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