CN101963797A - Embedded system based intrinsic safety type coal mining machine state monitoring and analyzing device - Google Patents
Embedded system based intrinsic safety type coal mining machine state monitoring and analyzing device Download PDFInfo
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Abstract
The invention relates to an embedded system based intrinsic safety type coal mining machine state monitoring and analyzing device. In the invention, a high-performance industrial grade ARM embedded processor and a system are used for forming a complete coal mining machine working condition signal monitoring, analyzing and processing system, and the device is designed on the basis of the general requirement GB3836.1-2000 of electrical equipment for explosive gas atmosphere and the intrinsic safety type requirement GB3836.4-2000 and mainly applied to monitoring and analyzing the working condition signals of an underground coal mining machine of a coal mine. The device comprises a microcontroller module (U_1), an RS232 serial communication module (U_2), a vibration signal and conventional analog quantity acquisition and analysis module (U_3), an Ethernet communication module (U_4), a power supply module (U_5), a data storage module (U_6) and a sensor module (U_7). The invention improves the state monitoring and fault diagnosing level of the coal mining machine; and by utilizing the system, the running condition and the working load condition of the coal mining machine can be monitored in real time on line, which provides reliable data for realizing the high-efficiency automatic mining, the remote operation and the fault diagnosis of the coal mining machine.
Description
Technical field
This device adopts high performance technical grade ARM flush bonding processor and system, form monitoring, analysis and the disposal system of a complete coalcutter working condition signal, this device designs based on general GB3836.1-2000 and the essential safe type requirement GB3836.4-2000 of requiring of explosive gas atmosphere electrical installation, is mainly used in the monitoring and the analysis of colliery silo shearer working condition signal.
Background technology
The status monitoring of coalcutter is by a programmable logic controller (PLC) (PLC) is installed in its explosion-proof chamber at present, conventional simulation amount (electric current, voltage, temperature, flow, pressure, haulage speed, position etc.) is gathered and simple logic overload alarm by this PLC, show by display screen then.Owing to the speed limit of PLC execution command and in reason such as indifferent aspect the data processing, can't realize the deeper processing of data.More importantly be collection, analysis and the processing that present coalcutter control system both domestic and external can't realize high-frequency vibration signal, also instrument or the device that does not carry out on-line monitoring and analysis at coalcutter.At present, at the status monitoring of coalcutter very imperfection, coalcutter producer mainly realizes the monitoring to normal signals such as coalcutter electric current, voltage, temperature both at home and abroad, to the monitoring of coalcutter vibration signal and analyze and still do not see related application.Even in the observation process of coalcutter normal signal, just monitor and simple logic determines at conventional tempolabile signal, further analyze and all must realize by remote computer with fault diagnosis, and the communication between them all realizes that by RS485 volume of transmitted data and speed are severely limited.The collection and the demonstration of the conventional heat transfer agents such as electric current, voltage, temperature, pressure and flow of coalcutter only are provided such as U.S. JOY company and German Eickhoff company.Through online retrieval (databases such as CNKI, IEEE) and coal machine factory and colliery investigation, also there be not this kind " based on the low-power consumption coalcutter status monitoring and the analytical equipment of embedded system " at present both at home and abroad.
Summary of the invention
Technical matters: the purpose of this invention is to provide a kind of intrinsic safety type coalcutter status monitoring and analytical equipment based on embedded system, improve coalcutter status monitoring and fault diagnosis level, utilize ruuning situation and operating load situation that this system can the real time on-line monitoring coalcutter, provide authentic data for realizing the exploitation of coalcutter high-efficient automatic, remote control and fault diagnosis.
Technical scheme: of the present inventionly be based on the intrinsic safety type coalcutter status monitoring of embedded system and the one-piece construction of analytical equipment:
The corresponding respectively D0-D15 end that connects the ethernet communication module of the interface end D0-D15 of micro controller module, the corresponding respectively A1-A5 end that connects the ethernet communication module of the interface end A1-A5 of micro controller module, corresponding respectively noE, New, Ncs, RST, the INT end that connects the ethernet communication module of the interface end noE of micro controller module, New, Ncs, RST, INT;
Corresponding respectively SDA, the SCL end that connects data memory module of interface SDA, the SCL of micro controller module;
Corresponding respectively TXD0, RXD0, TXD1, the RXD1 end that connects the RS232 serial communication of the interface end TXD0 of micro controller module, RXD0, TXD1, RXD1,
The corresponding respectively AD_D0-AD_D15 end that connects vibration signal and collection of conventional simulation amount and analysis module of the interface end AD_D0-AD_D15 of micro controller module, corresponding respectively AD_ConvertSignal, the AD_nBUSY end that connects vibration signal and collection of conventional simulation amount and analysis module of the interface end AD_ConvertSignal of micro controller module, AD_nBUSY
Corresponding respectively each sensor that connects in the sensor assembly of interface end AVR_TXD, AVR_RXD of vibration signal and the collection of conventional simulation amount and analysis module,
The power module output voltage is for each module.
The difference of the present invention and existing coalcutter monitoring technology is:
(1) collection and the simple logic determines that has been fruitful and has just realized the conventional simulation amount, do not realize the collection and the analysis of coalcutter high-frequency vibration signal, and our system can carry out online acquisition and analysis to 2 road vibration signals and 8 road conventional simulation signals, and vibration signal has been realized online spectrum analysis.
(2) after dsp chip occurs, all be to adopt the chip of dsp chip in the middle of the general document as spectrum analysis, DSP has very strong floating-point operation ability really, but interface and system transplantation are flexible and abundant not as ARM, and does not see the situation that DSP is applied to the coalcutter on-line monitoring.Adopt arm processor, low unlike dsp chip on instruction execution speed, on the software algorithm of spectrum analysis, adopt integer arithmetic, and overcome the speed issue of floating-point operation.
(3) being fruitful all is the data transmission that realizes slave computer and host computer by RS485 or RS232, and communication distance and speed are very restricted.We have adopted the ethernet communication mode based on TCP/IP, have solved the bottleneck problem of communication.
(4) at the difference of monitoring point number, our system can make up Ethernet with other network equipment, forms a perfect monitoring system.
(5) design according to general GB3836.1-2000 and the essential safe type requirement GB3836.4-2000 of requiring of explosive gas atmosphere electrical installation.All below 5V, overall current is no more than 0.8A to the operating voltage of native system, and the port working voltage of core ARM chip has only 3.3V, and core voltage has only 1.8V, and is low in energy consumption.
(6) all adopt the chip of technical grade, working temperature-40 ℃ ~ 125 ℃; The environment of coalcutter is abominable, and the temperature in the automatically controlled cavity is sometimes up to 80 ℃, and Single Chip Microcomputer (SCM) system is easy to cause job insecurity.
(7) system has ethernet communication interface and RS232 serial ports, both is fit to long-range mass data and transmits, can also be online with the coalcutter main control PLC, conveniently have the integrated of control system with coalcutter.
(8) adopt Embedded System Design.General expression carries out data acquisition by PLC, Single Chip Microcomputer (SCM) system in the middle of the previous achievements, needs and the industrial computer communication toward contact, and this has brought complicacy and instability to system.Embedded system is simple, stable, reliable, and the multitask running of support and Communication Control are arranged.
Beneficial effect:
(1) this device can carry out online acquisition and analysis to 2 road vibration signals and 8 road conventional simulation signals, and vibration signal has been realized online spectrum analysis;
(2) overcome the shortcoming that coalcutter can only carry out the simple logic fault judgement at present, improved the ability of coalcutter status monitoring, fault diagnosis and fault pre-alarming.
(3) all below 5V, overall current is no more than 0.8A to the operating voltage of native system, and the port working voltage of core ARM chip has only 3.3V, and core voltage has only 1.8V, and is low in energy consumption.
(4) realize the Ethernet transmission, solve the bottleneck problem of data transmission, the mobile device that is particularly suitable for as the coalcutter uses.
(5) native system not only is fit to the coalcutter use, also can be used for status monitoring, loading condition analysis and fault diagnosis, the early warning of other coal mine machinery equipment, has very strong applicability.
Description of drawings
Fig. 1 is based on the coalcutter status monitoring and the analytical equipment synoptic diagram of embedded system.
Comprise among the above figure: micro controller module U_1, RS232 serial communication module U_2, vibration signal and conventional simulation amount are gathered and analysis module U_3, ethernet communication module U_4, power module U_5, data memory module U_6, sensor U_7.
Embodiment
System forms:
(1) micro controller module U_1: the ARM7 processor LPC2214 that is produced by Philips company forms, LPC2214 is based on a microcontroller of supporting 16/32 ARM7TDMI-STMCPU of real-time simulation and tracking, and has the high speed Flash storer that 256kB embeds.The memory interface of 128 bit widths and unique accelerating structure can move 32 codes under maximum clock speed, can realize being to the maximum the CPU operating frequency of 60MHz by PLL in the sheet.LPC2214 has the encapsulation of 144 pin, provides 3 group of 32 bit port to use for peripherals, satisfies the A/D conversion of parallel processing vibration at high speed signal and the interface requirement of ethernet communication.ARM7TDMI-S is general 32-bit microprocessor, port voltage 3.3V, and core voltage 1.8V has the characteristic of high-performance and low-power consumption, satisfies colliery intrinsic safety requirement easily.The ARM structure is based on Reduced Instruction Set Computer (RISC) principle and designs.Instruction set is much simpler than complex instruction set computer (CISC) with relevant decoding mechanism.Therefore, use this small-sized, cheap processor just can realize very high instruction throughput and real-time interrupt response, when this processor is carried out an instruction next bar instruction is deciphered, and the 3rd instruction taken out from storer.Owing to used pipelining, but all continuous workings of all parts of processing and storage system.
(2) RS232 serial communication module U_2: in order realizing and in-plant industrial computer or miscellaneous equipment communication, to provide RS232 serial communication mode, can to have utilized industrial computer to carry out complicated data analysis or be used for that system program ISP downloads and debugging etc.This module adopts the high speed serial communication chip SP3232E and the MAX232 of Philips company.
(3) vibration signal and conventional simulation amount are gathered and analysis module U_3:1). this module is responsible for the high speed acquisition and the spectrum analysis of medium-high frequency vibration signal, can be used for the monitoring and the analysis of coalcutter duty.Adopt the ADS7805 of TI company, the maximum 100KHz of analog quantity inversion frequency adopts 16 parallel port transmission with CPU.2). the conventional simulation amount is gathered: be responsible for comprising current of electric, kinematic train temperature, pressure etc., be used to analyze the running status of institute's monitoring device.This module adopts the Atmage16 of AVR series, has 8 road AD conversion, adopts the serial ports transmission with CPU, satisfies the performance requirement of conventional simulation amount.
(4) ethernet communication module U_4: this module mainly is responsible for handling later data and is sent to Ethernet, and coalcutter status monitoring and analytical equipment can use with the miscellaneous equipment networking on the network by this module.Handle later multi-analog and vibration signal and can realize long-distance transmissions, even can carry out wireless transmission by third-party wireless data transmission module.This module adopts the Rtl8019 ethernet communication control chip of Taiwan REALTEK SEMI-CONDUCTOR, and adopts the parallel port transmission between the CPU, supports IEEE802.3,10Base5, and 10Base2,10BaseT guarantees data bandwidth and speed.
(5) power module U_5: this instrument is by the intrinsic safety type DC24V power supply power supply (power supply that coalcutter itself has, the coalcutter sensor uses) that is installed in the coalcutter explosion-proof chamber.Because the mainboard chip of this device mainly adopts the 5V power supply, need carry out voltage transformation.The 1A integrated stable voltage circuit LM2575 that power module U_5 adopts National Semiconductor to produce is converted to 5V to DC24V, LM2575 is inner integrated fixing oscillator, and peripheral components is few, the efficient height, required area of dissipation is few, does not need heat radiator; There is perfect holding circuit inside, comprises the electric current restriction, for native system provides reliable power supply.
(6) data memory module U_6: be used for the data that stores system parameters and needs are preserved.This module adopts the FeRAM memory chip FM24C256 of Philips company, and this module and CPU adopt the IIC communication.Memory capacity 256KB.
(7) sensor assembly U_7: military project level high-performance vibration signal sensor and other explosion-proof type temperature sensor, voltage sensor, current sensor etc.Sensor assembly is connected to this instrument by cable.
The corresponding respectively D0-D15 end that meets ethernet communication module U_4 of the interface end D0-D15 of micro controller module U_1, the corresponding respectively A1-A5 end that meets ethernet communication module U_4 of the interface end A1-A5 of micro controller module U_1, corresponding respectively noE, New, Ncs, RST, the INT end that meets ethernet communication module U_4 of the interface end noE of micro controller module U_1, New, Ncs, RST, INT; Corresponding respectively SDA, the SCL end that meets data memory module U_6 of interface SDA, the SCL of micro controller module U_1;
Corresponding respectively TXD0, RXD0, TXD1, the RXD1 end that meets RS232 serial communication U_2 of the interface end TXD0 of micro controller module U_1, RXD0, TXD1, RXD1,
The corresponding respectively AD_D0-AD_D15 end that meets vibration signal and collection of conventional simulation amount and analysis module U_3 of the interface end AD_D0-AD_D15 of micro controller module U_1, corresponding respectively AD_ConvertSignal, the AD_nBUSY end that meets vibration signal and collection of conventional simulation amount and analysis module U_3 of the interface end AD_ConvertSignal of micro controller module U_1, AD_nBUSY
Corresponding respectively each sensor that connects among the sensor assembly U_7 of interface end AVR_TXD, AVR_RXD of vibration signal and the collection of conventional simulation amount and analysis module U_3,
Power module U_5 output voltage is for each module.
The course of work:
Contain 8 tunnel common low frequency tempolabile signal A/D conversion chips among the sensor assembly U_7, contain 2 road high-frequency signal A/D conversion chips among vibration signal and the collection of conventional simulation amount and the analysis module U_3, sensor assembly U_7 and vibration signal and the collection of conventional simulation amount and analysis module U_3 convert analog signals to digital signal.Low frequency signal data after sensor assembly U_7 will change by serial communication send to RS232 serial communication module U_2, and then send to micro controller module U_1 and preserve, through preliminary filter with handle after data are sent to RS232 serial communication module U_2 serial ports and upper machine communication; And vibration signal and conventional simulation amount are gathered and analysis module U_3 transmits data by 16 high speed parallel ports to micro controller module U_1, data are carried out sequence and are preserved in micro controller module U_1,2 road high-frequency signals circulation carrying out spectrum analysis is calculated, compare with the parameter preset that is stored among the data memory module U_6 simultaneously, carry out alarm threshold judgement and vibration class classification, data after handling are sent to RS232 serial communication module U_2 serial ports and host computer carries out communication, and can be transferred to the remote port workstation by Ethernet by ethernet communication module U_4.
Claims (2)
1. intrinsic safety type coalcutter status monitoring and analytical equipment based on an embedded system is characterized in that:
The interface end D0-D15 of micro controller module (U_1) correspondence respectively connects the D0-D15 end of ethernet communication module (U_4), the interface end A1-A5 of micro controller module (U_1) correspondence respectively connects the A1-A5 end of ethernet communication module (U_4), and interface end noE, the New of micro controller module (U_1), Ncs, RST, INT correspondence respectively connect noE, New, Ncs, RST, the INT end of ethernet communication module (U_4);
Interface SDA, the SCL of micro controller module (U_1) respectively correspondence connect data memory module (U_6) SDA, SCL the end;
Interface end TXD0, the RXD0 of micro controller module (U_1), TXD1, RXD1 correspondence respectively connect TXD0, RXD0, TXD1, the RXD1 end of RS232 serial communication (U_2),
The interface end AD_D0-AD_D15 of micro controller module (U_1) correspondence respectively connects vibration signal and conventional simulation amount and gathers AD_D0-AD_D15 end with analysis module (U_3), interface end AD_ConvertSignal, the AD_nBUSY of micro controller module (U_1) correspondence respectively connects vibration signal and conventional simulation amount and gathers AD_ConvertSignal, AD_nBUSY end with analysis module (U_3)
Vibration signal and conventional simulation amount are gathered corresponding respectively each sensor that connects in the sensor assembly (U_7) of interface end AVR_TXD, AVR_RXD with analysis module (U_3),
Power module (U_5) output voltage is for each module.
2. intrinsic safety type coalcutter status monitoring and analytical equipment based on embedded system according to claim 1 is characterized in that: micro controller module (U_1) is ARM7 processor LPC2214; RS232 serial communication module (U_2) is high speed serial communication chip SP3232E and MAX232; Data memory module (U_6) adopts FeRAM memory chip FM24C256, and this module and CPU adopt IIC communication, memory capacity 256KB.
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| CN102168559A (en) * | 2011-03-15 | 2011-08-31 | 太原矿山机器集团有限公司 | Active explosion suppression type coal mining machine |
| CN102591309A (en) * | 2012-03-12 | 2012-07-18 | 河北首力防爆电机有限公司 | Underground wireless automatic control device for mining |
| CN102868449A (en) * | 2012-09-05 | 2013-01-09 | 华中科技大学 | Visible light communication-based underground radio communication system |
| CN103323093A (en) * | 2013-05-29 | 2013-09-25 | 天地上海采掘装备科技有限公司 | System and method for processing vibration information of a coal mining machine |
| CN103413185A (en) * | 2013-08-07 | 2013-11-27 | 中国矿业大学 | Optimal arrangement method of coal mining machine rocker arm vibration sensors |
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| CN104329091A (en) * | 2014-10-21 | 2015-02-04 | 中国矿业大学(北京) | Coal rock character identification system and method based on multiple parameters of cutting motors of coal cutter |
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| CN104329091A (en) * | 2014-10-21 | 2015-02-04 | 中国矿业大学(北京) | Coal rock character identification system and method based on multiple parameters of cutting motors of coal cutter |
| CN105722128B (en) * | 2014-11-28 | 2019-06-11 | 中国科学院沈阳自动化研究所 | A kind of GPRS network radio data transmission method of multi-access communication |
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| CN111240303B (en) * | 2020-01-20 | 2022-11-08 | 中国矿业大学 | CAN communication-based coal mining machine control system test platform device and use method |
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| CN112165172A (en) * | 2020-10-12 | 2021-01-01 | 宁夏凯晨电气集团有限公司 | Power distribution detection device and method |
| CN112165172B (en) * | 2020-10-12 | 2023-06-16 | 宁夏凯晨电气集团有限公司 | Power distribution detection device and method |
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Application publication date: 20110202 |