CN102541051B - Explosion-proof embedded type front-end controller for special monitoring network for coal output - Google Patents
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Abstract
The invention relates to an explosion-proof embedded type front-end controller for a special monitoring network for coal output and belongs to the technical field of a coal output monitoring device. The technical problem of providing a monitoring device for monitoring a coal output data in real time and safely and reliably sending the coal output data through the special monitoring network is solved. According to the technical scheme, a PLC (Programmable Logic Controller) is respectively connected with an AD collecting module, a frequency volume collecting module, a switching value collecting module, a power module, a liquid crystal display screen, a RS485 communication interface, an Ethernet transmission module and an infrared receiving device, wherein an input end of the AD collecting module is respectively connected with a weighting sensor and a speed sensor; a PSCBT (Process Scheduling based on Complete Binary Tree) is adopted by the PLC for encrypting data; and the PLC is integrated with a M2M type mutual-induction self-diagnosis program. The explosion-proof embedded type front-end controller provided by the invention is suitable for various mine output monitoring systems.
Description
Technical field
Explosion-proof embedded type front-end controller for special monitoring network for coal output of the present invention, belong to coal production supervising device technical field.
Background technology
The current production rate long-distance monitor and control is more extensive in sector applications such as transportation, manufacture, traffic, chemical industry, but most of monitoring systems are to the transmission of data and information and apply some defect, can not directly be applied in the coal production supervisory system in colliery, its weak point is: first: front controller can not carry out, without the protection of cheating formula, processing with the information security of transmission and having hidden danger to the monitoring result of output fully; Second: it is integrated that system can not be carried out real-time information to monitoring information, can not carry out network management to information; The 3rd: traditional detection system is not containing self-diagnostic function.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical matters to be solved is: provide a kind of the realization to carry out Real-Time Monitoring and can pass through the monitoring private network by coal production data security, the reliable monitoring device sent the coal production data.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: explosion-proof embedded type front-end controller for special monitoring network for coal output, comprise: PLC, the AD acquisition module, the frequency quantity acquisition module, switching value acquisition module, power module, LCDs, the RS485 communication interface, the Ethernet transport module, infrared receiver and the Infrared remote controller be used in conjunction with infrared receiver, described PLC respectively with the AD acquisition module, the frequency quantity acquisition module, switching value acquisition module, power module, LCDs, the RS485 communication interface, the Ethernet transport module is connected with infrared receiver,
The input end of described AD acquisition module is connected with speed pickup with LOAD CELLS respectively;
Described PLC adopts the crypto process dispatching algorithm PSCBT based on the complete binary tree structure to carry out data encryption, and PLC has incorporated M2M formula mutual inductance self-diagnostic program;
The shell of described explosion-proof embedded type front-end controller for special monitoring network for coal output adopts explosion-resistant enclosure, and the switch of described shell adopts the gate-type opening-closing structure.
The flow process of described M2M formula mutual inductance self-diagnostic program is: when the parameter of collecting environment when the sensor of sensing unit changes into simulating signal digital signal and offers processor unit in PLC and processed through ad/da converter, processor unit is divided into micro-control unit and storage unit, gather between the sensor of identical parameters data each other Coordination Treatment data mutually, processor unit has the ability with other sensor collaboration process data, data after processing will be responsible for indirectly or directly being sent to the diagnosis storage element by transmitting-receiving control module and communication unit, be sent to the fault-tolerant processing unit by the diagnosis storage element again, the M2M self-diagnosable system adopts unified time reference, collecting time lock unit and positioning unit are realized the self check of system and are tested oneself, the M2M self-diagnosable system utilizes the conceptual design data fusion rule of coding theory simultaneously, and in conjunction with the detecting function of etection theory design sensor, when controller breaks down, report to the police and record trouble time and faulty equipment, the data fusion rule with fault-tolerant ability still can be sent correct result back to processor unit.
The described crypto process dispatching algorithm PSCBT treatment scheme based on the complete binary tree structure is as follows:
The first step, start, and obtains the depth value m of complete binary tree; At first PSCBT obtains the number n of abnormal process from PLC, with this, determines the degree of depth m of complete binary tree; Corresponding relation between abnormal process number n in platform and the degree of depth m of tree can obtain according to following formula:
According to the m value obtained, construct the complete binary tree that a degree of depth is m from the first step; Then enter second step;
Second step, play first with crypto process, uses first pair of secret key to encrypt; Start to be encrypted from the root node process, from the root node process, to crypto process all the leaf node process, all use same key to be encrypted the coal production data message; Then enter the 3rd step;
The 3rd step is right
individual leaf node process is used different keys to being encrypted; ?
in individual leaf node process, select at random a tight process Pi of leaf node, use second group of secret key to encrypt, the key obtained after the corresponding crypto process of this node is complete, as the key of the I/O data file that will encrypt; This nodal information code is sent to the root process node, then enter the 4th step;
The 4th step, finish;
When the crypto process dispatching algorithm PSCBT of employing based on the complete binary tree structure is encrypted the coal production data file, at first to play a root crypto process and carry out encryption for the first time, then start two subprocesss by the root process by fork (), follow with same symmetric key being encrypted, after executing, subprocess is by the node serial number i computing of being taken the logarithm
, and then obtain the j value, after the j value is added to 1 and m compare, if (j+1) be less than m, just illustrate that this process is not the leaf process, need to have continued two new processes, until value (j+1) equals m, at this moment corresponding process is exactly the leaf process, does not need the new process that recurs, all
in the middle of individual leaf process, select at random the real crypto process of encrypting for the second time of carrying out of a process, last this selected process will send to the root process node by information code by the routing information of oneself.
Compared with prior art; the present invention has following beneficial effect: the present invention is by being encrypted coal production terminal harvester, without the cheating protection and incorporate M2M formula mutual inductance self-diagnostic program; reached the function of safe and reliable collection coal production data message; and make whole device easily realize the information management of networking by Ethernet interface and the RS485 communication interface arranged; provide a kind of realize to coal production in real time, the monitoring device of safety, reliable, networked control, convenient plan exploitation, the safety in production of controlling colliery.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the process flow diagram of M2M formula mutual inductance self-diagnostic program in the present invention;
Fig. 3 is the crypto process dispatching algorithm PSCBT processing flow chart based on the complete binary tree structure in the present invention;
Fig. 4 is Infrared remote controller keypress function figure in the present invention;
In figure: 1 is that PLC, 2 is that AD acquisition module, 3 is that frequency quantity acquisition module, 4 is that switching value acquisition module, 5 is that power module, 6 is that LCDs, 7 is that RS485 communication interface, 8 is that Ethernet transport module, 9 is that infrared receiver, 10 is that Infrared remote controller, 11 is that LOAD CELLS, 12 is speed pickup.
Embodiment
As shown in Figure 1, explosion-proof embedded type front-end controller for special monitoring network for coal output of the present invention, comprise: PLC1, AD acquisition module 2, frequency quantity acquisition module 3, switching value acquisition module 4, power module 5, LCDs 6, RS485 communication interface 7, Ethernet transport module 8, infrared receiver 9 and the Infrared remote controller 10 be used in conjunction with infrared receiver 9, described PLC1 respectively with AD acquisition module 2, frequency quantity acquisition module 3, switching value acquisition module 4, power module 5, LCDs 6, RS485 communication interface 7, Ethernet transport module 8 is connected with infrared receiver 9.
The input end of described AD acquisition module 2 is connected with speed pickup 12 with LOAD CELLS 11 respectively, operated by rotary motion has 4 LOAD CELLS 11 and 1 speed pickup 12, LOAD CELLS 11 is suspended on the girder steel of belt system, and the wheel of speed pickup 12 is pressed on return belt; Be used for Real-time Collection coal production data, and by AD acquisition module 2, the data that collect be sent to PLC1.
The shell of described explosion-proof embedded type front-end controller for special monitoring network for coal output adopts explosion-resistant enclosure; the switch of described shell adopts the gate-type opening-closing structure; by 4 pairs of controllers of switching value acquisition module, protected; PLC1 records storage to the data of each collection switching value; and transmitted by network transmission module; conveniently controller secure is detected; said frequencies amount acquisition module 3 gathers the frequency signal of underground equipment 20-2000HZ; above-mentioned power module 5 adopts the power module that model is LH15-10B12, is this device power supply.
Above-mentioned RS485 communication interface 7 contrasts FDK carrier-wave transmission mode in the past, adopted the RS485 transfer rate higher, the inner integrated Ethernet transport module 8 of the present invention, controller adopts Modbus RTU to transmit, with Modbus ASCII in the past, compare, the mode of RTU is fast, in program, controls in real time, adopt browser/server B/S mode, and provide software interface and communication protocol for third party's reading out data.
Described PLC1 adopts the crypto process dispatching algorithm PSCBT based on the complete binary tree structure to carry out data encryption, the change data have been prevented, better facilitate the monitoring management of Administration of Coal Mine Safety, adopt in conjunction with physics real-time information collection and virtual information collection simultaneously and obtain real-time information, make Monitoring Data more safe and reliable, PLC1 has incorporated M2M formula mutual inductance self-diagnostic program.
As shown in Figure 2, the flow process of described M2M formula mutual inductance self-diagnostic program is: when the parameter of collecting environment when the sensor of sensing unit changes into simulating signal digital signal and offers processor unit in PLC1 and processed through ad/da converter, processor unit is divided into micro-control unit and storage unit, gather between the sensor of identical parameters data each other Coordination Treatment data mutually, processor unit has the ability with other sensor collaboration process data, data after processing will be responsible for indirectly or directly being sent to the diagnosis storage element by transmitting-receiving control module and communication unit, be sent to the fault-tolerant processing unit by the diagnosis storage element again, the M2M self-diagnosable system adopts unified time reference, collecting time lock unit and positioning unit are realized the self check of system and are tested oneself, the M2M self-diagnosable system utilizes the conceptual design data fusion rule of coding theory simultaneously, and in conjunction with the detecting function of etection theory design sensor, when controller breaks down, report to the police and record trouble time and faulty equipment, data fusion rule with fault-tolerant ability still can be sent correct result back to processor unit, and the power supply unit of said system is provided by power module 5.
The function that above-mentioned M2M formula mutual inductance self-diagnostic program is realized is: during the device fails such as gauging instrument, report to the police and record trouble time and faulty equipment in system, be embodied in opened/closed constantly and state, communication abnormality/constantly normal and state; Displaying contents comprises: colliery, cumulative number, cumulative time, each situation, each cumulative time, each start-stop controller constantly have the simulation drawing Presentation Function and have self check simulation drawing Presentation Function when breaking down, but the duty of the mimic diagram of display device and communication line and monitoring device; When seriously overfulfiling a production target or system works when abnormal, system is sent the sound and light alarm signal; Alarming horn or hummer send the sound or verbal cue, and correlation values, word, icon etc. are used red display, or red display adds flicker, after click, close, and self-diagnosable system carries out fault diagnosis in time, and PLC1 better coordinates monitoring system to be controlled.
As shown in Figure 3, the described crypto process dispatching algorithm PSCBT treatment scheme based on the complete binary tree structure is as follows:
The first step, start, and obtains the depth value m of complete binary tree; When the coal production information flow is prevented to the cheating protection, at first PSCBT obtains the number n of abnormal process from PLC1, with this, determines the degree of depth m of complete binary tree; Corresponding relation between abnormal process number n in platform and the degree of depth m of tree can obtain according to following formula:
This formula is to adopt the relative strategy between n and m in this embodiment, the mutual relationship of m and n relates to the data security of mining coal production and realizes between complicacy balance and determine, consider from the angle of M2M formula mutual inductance self-diagnostic program of the present invention, in embodiment, the maximal value of m is defined as to 5; According to the m value obtained, construct the complete binary tree that a degree of depth is m from the first step; Then enter second step;
Second step, play first with crypto process, uses first pair of secret key to encrypt; Start to be encrypted from the root node process, from the root node process, to crypto process all the leaf node process, all use same key to be encrypted the coal production data message; Then enter the 3rd step;
The 3rd step is right
individual leaf node process is used different keys to being encrypted; ?
in individual leaf node process, select at random a tight process Pi of leaf node, use second group of secret key to encrypt, the key obtained after the corresponding crypto process of this node is complete, as the key of the I/O data file that will encrypt;
This nodal information code is sent to the root process node, selected leaf node Pi points to the root node place by the left child pointers of oneself, routing information code binary code sequence is told to the root node process, the purpose of doing like this is that root node can find the Pi encrypted for the second time, makes the legal user of security adopt corresponding key to be decrypted to encrypt file; Then enter the 4th step;
The 4th step, finish;
When the crypto process dispatching algorithm PSCBT of employing based on the complete binary tree structure is encrypted the coal production data file, at first to play a root crypto process and carry out encryption for the first time, then start two subprocesss by the root process by fork (), follow with same symmetric key being encrypted, after executing, subprocess is by the node serial number i computing of being taken the logarithm
, and then obtain the j value, after the j value is added to 1 and m compare, if (j+1) be less than m, just illustrate that this process is not the leaf process, need to have continued two new processes, until value (j+1) equals m, at this moment corresponding process is exactly the leaf process, does not need the new process that recurs, all
in the middle of individual leaf process, the random real crypto process of encrypting for the second time of carrying out of a process of selecting, last this selected process will send to the root process node by information code by the routing information of oneself, like this can be so that when deciphering, validated user can obtain the key information that will use, guarantee like this coal production information is carried out real-time encrypted, make the present invention become real anti-cheating controller, reached safety, reliably gathered and transmit the function of coal production data message.
Fig. 4 is Infrared remote controller 10 keypress function figure in the present invention, carry out the parameter setting by Infrared remote controller 10, without harvester is carried out to touch controls, can to telepilot, 34 groups of integrated parameters closely arrange simultaneously, be respectively the coefficient of weighing, zero point ISN, the weight ISN, the speed ISN, the belt girth, signal actual measurement/interior switch of giving, give the weight ISN, show label, the interior speed ISN of giving, the automatic zero set (AZS) switch, four class's handover times, weighing section length, device number, the zeroing higher limit, time, date, the machine address, communication modes, baud rate, weight in kind, counterweight weight, quantitative values, quantitative output switch and pulse width, range, the scale of flow indication, the scale that cumulative amount shows, retention parameter, the fifth wheel girth, fifth wheel is umber of pulse weekly, the zeroing amplitude range, the IP address arranges, arranged by the actual parameter value in above-mentioned parameters function and practical application, enter when each arranges option and have three row to show, the first row display parameter title, the second row display parameter default value or history value, the third line acquiescence is shown as " 888888 ", and when the input occurrence, default value is capped, and " removing resets " key, " determining " key while having inputted are arranged on remote control panel, " exiting " key after having inputted completes setting, so not only increased security of the present invention but also protected, and having made to debug more convenient.
The present invention is by being encrypted coal production terminal harvester, without the cheating protection and incorporate M2M formula mutual inductance self-diagnostic program; reached the function of safe and reliable collection coal production data message; and make whole device easily realize the information management of networking by RS485 communication interface 7 and the Ethernet transport module 8 arranged; provide a kind of realize to coal production in real time, the monitoring device of safety, reliable, networked control, convenient plan exploitation, the safety in production of controlling colliery.
Claims (1)
1. explosion-proof embedded type front-end controller for special monitoring network for coal output, it is characterized in that: comprising: PLC(1), AD acquisition module (2), frequency quantity acquisition module (3), switching value acquisition module (4), power module (5), LCDs (6), RS485 communication interface (7), Ethernet transport module (8), infrared receiver (9) and the Infrared remote controller (10) be used in conjunction with infrared receiver (9), described PLC(1) respectively with AD acquisition module (2), frequency quantity acquisition module (3), switching value acquisition module (4), power module (5), LCDs (6), RS485 communication interface (7), Ethernet transport module (8) is connected with infrared receiver (9),
The input end of described AD acquisition module (2) is connected with speed pickup (12) with LOAD CELLS (11) respectively;
Described PLC(1) adopt the crypto process dispatching algorithm PSCBT based on the complete binary tree structure to carry out data encryption, PLC(1) incorporated M2M formula mutual inductance self-diagnostic program;
The shell of described explosion-proof embedded type front-end controller for special monitoring network for coal output adopts explosion-resistant enclosure, and the switch of described shell adopts the gate-type opening-closing structure;
The flow process of described M2M formula mutual inductance self-diagnostic program is: when parameter that the sensor of sensing unit is collected environment changes into digital signal through ad/da converter by simulating signal, offer PLC(1) in processor unit while being processed, processor unit is divided into micro-control unit and storage unit, gather between the sensor of identical parameters data each other Coordination Treatment data mutually, processor unit has the ability with other sensor collaboration process data, data after processing will be responsible for indirectly or directly being sent to the diagnosis storage element by transmitting-receiving control module and communication unit, be sent to the fault-tolerant processing unit by the diagnosis storage element again, the M2M self-diagnosable system adopts unified time reference, collecting time lock unit and positioning unit are realized the self check of system and are tested oneself, the M2M self-diagnosable system utilizes the conceptual design data fusion rule of coding theory simultaneously, and in conjunction with the detecting function of etection theory design sensor, when controller breaks down, report to the police and record trouble time and faulty equipment, the data fusion rule with fault-tolerant ability still can be sent correct result back to processor unit,
The described crypto process dispatching algorithm PSCBT treatment scheme based on the complete binary tree structure is as follows:
The first step, start, and obtains the depth value m of complete binary tree; PSCBT is at first from PLC(1) obtain the number n of abnormal process, determine the degree of depth m of complete binary tree with this; Corresponding relation between abnormal process number n in platform and the degree of depth m of tree can obtain according to following formula:
According to the m value obtained, construct the complete binary tree that a degree of depth is m from the first step; Then enter second step;
Second step, play first with crypto process, uses first pair of secret key to encrypt; Start to be encrypted from the root node process, from the root node process, to crypto process all the leaf node process, all use same key to be encrypted the coal production data message; Then enter the 3rd step;
The 3rd step is right
individual leaf node process is used different keys to being encrypted; ?
in individual leaf node process, select at random a tight process Pi of leaf node, use second group of secret key to encrypt, the key obtained after the corresponding crypto process of this node is complete, as the key of the I/O data file that will encrypt; This nodal information code is sent to the root process node, then enter the 4th step;
The 4th step, finish;
When the crypto process dispatching algorithm PSCBT of employing based on the complete binary tree structure is encrypted the coal production data file, at first to play a root crypto process and carry out encryption for the first time, then start two subprocesss by the root process by fork (), follow with same symmetric key being encrypted, after executing, subprocess is by the node serial number i computing of being taken the logarithm
, and then obtain the j value, after the j value is added to 1 and m compare, if (j+1) be less than m, just illustrate that this process is not the leaf process, need to have continued two new processes, until value (j+1) equals m, at this moment corresponding process is exactly the leaf process, does not need the new process that recurs, all
in the middle of individual leaf process, select at random the real crypto process of encrypting for the second time of carrying out of a process, last this selected process will send to the root process node by information code by the routing information of oneself.
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| CN111813515A (en) * | 2020-06-29 | 2020-10-23 | 中国平安人寿保险股份有限公司 | Multi-process-based task scheduling method and device, computer equipment and medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1615442A (en) * | 2001-12-20 | 2005-05-11 | 埃内尔迪斯特里布齐恩公司 | System for the remote data acquisition and control of electric energy meters |
| CN101122778A (en) * | 2007-09-19 | 2008-02-13 | 山西万立科技有限公司 | Embedded type weighing system based on intelligent fuzzy control |
| CN101825890A (en) * | 2010-03-25 | 2010-09-08 | 刘文祥 | Object network |
| CN102130947A (en) * | 2011-01-30 | 2011-07-20 | 深圳市赛远自动化系统有限公司 | Remote monitored maintenance method and system based on 3G and cloud computing technology |
-
2012
- 2012-01-11 CN CN2012100068306A patent/CN102541051B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1615442A (en) * | 2001-12-20 | 2005-05-11 | 埃内尔迪斯特里布齐恩公司 | System for the remote data acquisition and control of electric energy meters |
| CN101122778A (en) * | 2007-09-19 | 2008-02-13 | 山西万立科技有限公司 | Embedded type weighing system based on intelligent fuzzy control |
| CN101825890A (en) * | 2010-03-25 | 2010-09-08 | 刘文祥 | Object network |
| CN102130947A (en) * | 2011-01-30 | 2011-07-20 | 深圳市赛远自动化系统有限公司 | Remote monitored maintenance method and system based on 3G and cloud computing technology |
Non-Patent Citations (4)
| Title |
|---|
| 基于物联网的煤炭产量远程监测系统;张剑勇等;《科技创新与生产力》;20110331(第3期);44-46，53 * |
| 季国林等.煤炭产量远程监测装置的设计与应用.《电子设计工程》.2010,(第8期), |
| 张剑勇等.基于物联网的煤炭产量远程监测系统.《科技创新与生产力》.2011,(第3期), |
| 煤炭产量远程监测装置的设计与应用;季国林等;《电子设计工程》;20100831(第8期);64-67 * |
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