CN112763830A - Online monitoring system and method for underground coal mine equipment - Google Patents
Online monitoring system and method for underground coal mine equipment Download PDFInfo
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- CN112763830A CN112763830A CN202011593705.0A CN202011593705A CN112763830A CN 112763830 A CN112763830 A CN 112763830A CN 202011593705 A CN202011593705 A CN 202011593705A CN 112763830 A CN112763830 A CN 112763830A
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- 239000003245 coal Substances 0.000 title claims abstract description 57
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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 invention provides an online monitoring system and method for underground coal mine equipment, which can efficiently and accurately monitor the running state of the underground coal mine equipment.
Description
Technical Field
The invention relates to the field of coal mine equipment, in particular to an online monitoring system and method for coal mine underground equipment.
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.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an online monitoring system and method for underground equipment of a coal mine, which can efficiently and accurately monitor the running state of the underground equipment of the coal mine.
In order to achieve the purpose, the invention adopts the specific scheme that: 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.
An on-line monitoring method of an on-line monitoring system of underground coal mine equipment comprises the following steps:
s1, deploying the online monitoring system and initializing;
s2, starting a system interrupt and watchdog timer by the microprocessor;
s3, the microprocessor sequentially performs data acquisition, data calculation and upper communication according to system interruption;
s4, the microprocessor refreshes the watchdog timer;
s5, judging the health state of the solid-state memory by the microprocessor, if the solid-state memory is healthy, storing data, and if the solid-state memory is not healthy, executing S6;
s6, returning to S2.
The online monitoring method of the online monitoring system for the underground coal mine equipment is further optimized as follows: in S1, the method for initializing the online monitoring system includes:
s1.1, managing information of the underground coal mine equipment through the upper computer;
s1.2, setting a data set for each underground coal mine equipment through an upper computer;
s1.3, the solid-state memory of each information acquisition and recording device is checked through the upper computer, and if the solid-state memory is unavailable according to the checking result, the solid-state memory is replaced or supplemented.
The online monitoring method of the online monitoring system for the underground coal mine equipment is further optimized as follows: s1.1, the information of the underground coal mine equipment comprises equipment types and installation places, and a management method comprises adding, modifying and deleting;
and S1.2, the data set comprises a current parameter unit, a power parameter unit and a danger threshold unit.
The online monitoring method of the online monitoring system for the underground coal mine equipment is further optimized as follows: in S2, the system interrupt includes a sampling interrupt, a fixed duration interrupt, and a communication interrupt, the microprocessor performs data acquisition when the system interrupt is the sampling interrupt, performs data calculation when the system interrupt is the fixed duration interrupt, and performs upper communication when the system interrupt is the communication interrupt.
Has the advantages that: the method can efficiently and accurately monitor the running state of each underground coal mine device on line, further realize the starting analysis, no-load, load and overload running analysis, device fault analysis, device running condition analysis and the like of the underground coal mine devices, provide detailed running data for device fault early warning and abnormal problem analysis, and provide powerful help for guaranteeing production safety and 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 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 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.
Based on the system, the invention also provides an online monitoring method of the online monitoring system for the underground equipment of the coal mine, which comprises S1-S6.
And S1, deploying the online monitoring system and initializing. When the online monitoring system is deployed, the installation mode of the information collecting and recording device and the connection mode of the information collecting and recording device and the coal mine underground equipment need to be determined according to the specific type and model of the coal mine underground equipment, and the details are not repeated here. After the system hardware is deployed, the initialization is completed through the upper computer, and the normal operation of the system is ensured.
In S1, the method for initializing the online monitoring system is S1.1 to S1.3.
S1.1, managing information of underground coal mine equipment through an upper computer, wherein the information of the underground coal mine equipment comprises equipment types and installation places, and the management method comprises adding, modifying and deleting. The device type is used for classifying underground coal mine devices, the types of actual operation parameters corresponding to the similar underground coal mine devices are the same, the efficiency of summarizing and analyzing the actual operation parameters can be effectively improved through classification, and the installation place is used for marking the positions of the underground coal mine devices so as to be quickly positioned and maintained when the underground coal mine devices break down. In addition, the information of the underground coal mine equipment can also comprise an equipment name, a field cabinet number, a factory number and related parameters.
S1.2, setting a data set for each coal mine underground device through an upper computer, wherein the data set comprises a current parameter unit, a power parameter unit and a danger threshold value unit. The current parameter units may include a device on current, a device off current, and a start current, the power parameter units may include an idle power, a load power, and an overload power, and the hazard threshold units may include a short circuit value, an overcurrent value, an undervoltage value, and an overvoltage value. And each data in the data group is obtained by decomposing the actual operation parameters sent by the signal acquisition and recording device through the upper computer.
And S1.3, checking the solid-state memory of each information acquisition and recording device through the upper computer, and replacing or supplementing the solid-state memory if the solid-state memory is unavailable according to a checking result.
S2, the microprocessor starts a system interrupt and watchdog timer.
And S3, the microprocessor sequentially performs data acquisition, data calculation and upper communication according to the system interrupt.
In S2, the system interrupt includes a sampling interrupt, a fixed-duration interrupt, and a communication interrupt, the microprocessor performs data acquisition when the system interrupt is the sampling interrupt, performs data calculation when the system interrupt is the fixed-duration interrupt, and performs upper-level communication when the system interrupt is the communication interrupt.
When the system interrupt is a sampling interrupt, the specific method for the microprocessor to perform data acquisition is S311 to S313.
S311, the microprocessor reads the input value of the A/D conversion module.
And S312, calculating the phase angle of the voltage and the current according to the input value by the microprocessor.
And S313, if the cycle sampling is finished, setting a sampling finishing mark and then finishing, and if the cycle sampling is not finished, directly finishing.
Namely, the sampling interruption realizes the reading of the A/D sampling value and the calculation of the voltage and current phase angle.
When the system interrupt is a fixed-duration interrupt, the specific method for the microprocessor to perform data calculation is S321 to S325.
S321, judging whether the sampling completion flag is set, if so, calculating the electrical parameters and then executing S322, and if not, directly executing S322.
And S322, lighting an indicator lamp.
And S323, updating the clock.
And S324, integrating the stored data.
And S325, if the integration of the stored data is finished, setting a data storage mark and then finishing, otherwise, directly accepting.
Namely, the fixed-time interruption realizes the calculation of electrical parameters, the updating of clocks, the integration of stored data and the processing of indicator lights. In this embodiment, the fixed duration interrupt is set to a 20ms interrupt.
When the system interrupt is a communication interrupt, the communication interrupt is divided into two parts of receiving interrupt and sending interrupt, the receiving interrupt and the sending interrupt are generated in sequence, and the specific method for the microprocessor to perform the upper communication is from S331 to S336.
And S331, receiving control data from the upper computer.
S332, setting a receiving completion mark.
And S333, judging whether the control data is correct or not, if so, executing S334, and if not, directly ending.
And S334, extracting the function code from the control data. The function codes are used for representing data which needs to be read by the upper computer.
And S335, constructing the transmission frame according to the function code.
And S336, sending data to the upper computer. The data sent here is one or more of the actual operating parameters.
Namely, the communication interruption realizes the receiving and sending of data with the upper computer, wherein S331 to S332 correspond to receiving interruption, and S333 to S336 correspond to sending interruption.
S4, the microprocessor refreshes the watchdog timer.
S5, the microprocessor judges the health state of the solid-state memory, if healthy, the data is stored, otherwise, the S6 is executed. The specific method of S5 is S5.1 to
And S5.1, judging whether the SD card is normal, if so, executing S5.2, and if not, reporting the SD card fault to the upper computer and then ending.
And S5.2, judging whether the data integration mark is set or not, if so, executing S5.3, and if not, directly ending.
And S5.3, storing the actual operation parameters into the SD card in a file form, finishing the operation if the storage is successful, and finishing the operation after reporting the SD card fault to the upper computer if the storage is failed.
S6, returning to S2.
In addition, the method is composed of two parts, wherein the steps from S1 to S6 are executed correspondingly by the information acquisition and recording device, the other part is executed by the upper computer, in the executed part of the upper computer, the upper computer calculates a data group corresponding to the underground coal mine equipment according to actual operation parameters acquired from the information acquisition and recording device, the calculation methods are different when the specific models of the underground coal mine equipment are different, the calculation methods need to be determined according to actual conditions, and details are not repeated here.
By the method, the running state of the underground coal mine equipment can be efficiently and accurately monitored.
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 (7)
1. The on-line monitoring system for the underground equipment of the coal mine is characterized by comprising a plurality of information collecting and recording devices correspondingly connected with the underground equipment of the coal mine 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 which 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 solid-state memory is set as an SD card;
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.
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 method of the on-line monitoring system of the underground coal mine equipment according to claim 1, characterized by comprising the following steps:
s1, deploying the online monitoring system and initializing;
s2, starting a system interrupt and watchdog timer by the microprocessor;
s3, the microprocessor sequentially performs data acquisition, data calculation and upper communication according to system interruption;
s4, the microprocessor refreshes the watchdog timer;
s5, judging the health state of the solid-state memory by the microprocessor, if the solid-state memory is healthy, storing data, and if the solid-state memory is not healthy, executing S6;
s6, returning to S2.
5. The method of claim 4, wherein in S1, the method for initializing the online monitoring system comprises:
s1.1, managing information of the underground coal mine equipment through the upper computer;
s1.2, setting a data set for each underground coal mine equipment through an upper computer;
s1.3, the solid-state memory of each information acquisition and recording device is checked through the upper computer, and if the solid-state memory is unavailable according to the checking result, the solid-state memory is replaced or supplemented.
6. The method according to claim 5, wherein in S1.1, the information of the underground coal mine equipment comprises equipment types and installation sites, and the management method comprises addition, modification and deletion;
and S1.2, the data set comprises a current parameter unit, a power parameter unit and a danger threshold unit.
7. The method of claim 4, wherein the system interrupt includes a sampling interrupt, a fixed duration interrupt and a communication interrupt, the microprocessor performs data collection when the system interrupt is the sampling interrupt, performs data calculation when the system interrupt is the fixed duration interrupt, and performs upper communication when the system interrupt is the communication interrupt in S2.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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