CN1801014A - Embedded digitized automatic control device for coal mining machine - Google Patents
Embedded digitized automatic control device for coal mining machine Download PDFInfo
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Abstract
The invention discloses a flush type digital self-control device of coal cutter, which comprises the following parts: upper set, lower set in connection with the upper set and peripheral equipment control circuit at core of lower set control, wherein the lower set adapts working control machine as core, which contains CPU in connection with the display data communication line through display interface and programming interface of edible controller in the lower set through serial interface and keyboard through keyboard interface; the power interface of working control machine connects the outer power through first switch power and electric filter; the output end of first switch power connects the inverter, whose high pressure power output end connects the power interface of display; the CPU stores the control program of upper set and appliance management program.
Description
Technical field
The present invention relates to a kind of automaton, specifically coalcutter embedded digitalization automaton.
Background technology
In the prior art, the coalcutter electric-control system that is applied as of coalcutter automatic control technology provides new thinking.Along with the develop rapidly of industrial control field and the continuous extension and the expansion of application thereof, improved the automaticity of homemade coalcutter, shortened and external import coalcutter between gap.More external advanced coal mining states are for adapting to the needs of high-yield and high-efficiency, constantly adopting technology, corresponding coalcutter automated navigation system, the monitoring and fault diagnosis systems of developing such as electronics and computing machine aspect monitoring and the control, make full use of new technologies such as microelectronics, microcomputer, PLC (Programmable Logic Controller), network technology and Distributed Control System (DCS) and improve and improve the performance of these systems, strengthen its reliability, its technical merit is stepped to a new level.The outstanding advantage of digital communication is that antijamming capability is strong, is easy to encrypt, and helps multiple transmission of Information and exchange.The equipment simple economy, be easy to integrated.The technology looks of coal industry for a change improve its management level, excessively are necessary to digitizing progressively with the communication of colliery system.The development and application of electromechanical integration technology not only can be brought into play its equipment effectiveness to greatest extent, and because the inline diagnosis of pin-point accuracy, thereby the security and the reliability of equipment have been improved greatly, increased the Homes Using TV of equipment, the risk that this may cause full ore deposit to stop production with regard to having been avoided to a great extent because the coal mining centralization is produced.Yet the present mining equipment of China seldom has and adopts industrial computer as host computer, the PLC opertaing device as slave computer, and great majority are the control core with the single-chip microcomputer, and automaticity is not high.Though cost is lower, the hardware device antijamming capability is not strong, and job insecurity is unsuitable for the rugged surroundings of down-hole.The software aspect, the extendability of program, transplantability and versatility are relatively poor, and function and technology associativity are poor.
Summary of the invention
For the stable performance that guarantees product, safe and reliable, the purpose of this invention is to provide a kind of highly versatile, the automaticity height has the coalcutter embedded digitalization automaton of portability, extendability, friendly interface.
To achieve these goals, the technical solution used in the present invention is:
The present invention includes host computer, carry out slave computer that communication is connected with host computer and be the peripheral apparatus control circuit of control core with the slave computer, all be placed in the peripheral automatically controlled explosion-proof tank that reaches mining safe class, the industrial computer in the host computer also is connected to long-range host computer (standby functions) by network interface.
Described host computer is core with the industrial computer, the central processing unit of being located at this industrial computer inside links to each other with the data communication line of display by display interface device, link to each other with the programming port of Programmable Logic Controller in the slave computer by serial line interface COM1, be connected with keyboard by keyboard interface; The power interface of industrial computer is connected to external power source by first Switching Power Supply and wave filter, and the output terminal of this first Switching Power Supply also is connected to inverter, and the high-voltage power supply output terminal of this inverter is connected to the power interface of display; There are pc control procedure and application management program in the described central processing unit; Described pc control procedure is: at first dispose and open serial line interface, be complementary with the Programmable Logic Controller communication setting with assurance; Start a plurality of worker threads then, wherein gather the various data in the responsible data field of constantly gathering in the Programmable Logic Controller of sub-thread, after data acquisition is finished, effectively sub-thread is upgraded at the interface, the sub-thread of local datastore finishes the renewal interface display respectively and data persistence is operated to start to make event object, this process detects the data scope simultaneously, just ejects warning message if go beyond the scope; The sub-thread that sends control information is finished Programmable Logic Controller is sent control information; The sub-thread of remote transmission is responsible for regularly in the database of the data transmission in the local data base in the distance host; Described host computer application management program is: user side is presented as embedded device (industrial computer end) application program, application program is read and write and is inquired about the local move database of embedded device by built-in SQL Server CE user agent, simultaneously SQL Server CE user agent also and long-range host computer database synchronously; Server end (long-range upper computer end) is presented as IIS (Internet net Web server) middle layer and SQL Server database; Also there is a SQL Server CE agency in the IIS middle layer, and it handles the request of data of mobile device end; SQL Server database is handled the data that IIS sends by SQL Server OLE DB Provider physical layer interface; Described slave computer comprises Programmable Logic Controller, active station, remote control transmitter, receiver of remote-control sytem, relay circuit and multi-channel conversion circuit, transmitter module in the above-mentioned remote control transmitter and receiver of remote-control sytem carry out wireless telecommunications, this receiver of remote-control sytem is connected to the digital-quantity input interface of Controlled by Programmable Controller unit by the remote control receiver module, and the digital quantity input port of this control module links to each other with the fault-signal detecting element; Relay coil in the relay circuit, the control end in the multi-channel conversion circuit are connected to the digital-quantity output interface of the control module of Programmable Logic Controller respectively, and the contact of each relay inserts in the control loop of peripherals on the relay board; The signal of each check point of peripherals (comprising current detection signal, voltage detection signal) is connected to the mould/number conversion input block in the Programmable Logic Controller and the analog quantity input of A/D converter as the analog quantity input signal; The analog quantity delivery outlet of its A/D converter links to each other with frequency converter;
The power interface of above-mentioned each unit, multi-channel conversion circuit and relay circuit is connected to external power source through the second switch power supply respectively; Programmable Logic Controller links to each other with host computer by programming port, carries out communication by communication port and active station and is connected, and active station is connected to external power source by intrinsic safety electric source; There is the slave computer control program in the central processing unit of control module; Described relay circuit has multicircuit relay, the coil common port is all received the DC24V output terminal of second switch power supply, the other end is received the digital-quantity output interface of the control module of Programmable Logic Controller, and the contact of relay is connected to respectively in each control loop of peripherals; Have in the control loop of inductive load, its corresponding relay coil is in series with fly-wheel diode; Described multi-channel conversion circuit is a multiplexing module, its power positive end Vdd is connected to the DC12V output terminal of second switch power supply, power supply negative terminal Vee and Vss are connected to 0V, the control input end of this multiplexing module is connected to the digital-quantity output interface of control module in the Programmable Logic Controller, input end of analog signal is connected to on-the-spot detecting element, and analog signal output is connected to the analog quantity input of the A/D converter in the Programmable Logic Controller; The idiographic flow of described slave computer control program is: coalcutter complete machine powering at first, and the self-insurance contact by Programmable Logic Controller keeps powering on the loop, to guarantee the complete machine power supply of system works; Enter the data acquisition computing then,, as the data field, be used for participating in control, report to the police and show through the computing judgment processing by gathering peripheral various sensor signals; Next the body parameter that possesses that proposes according to the user comes the urgency on the pilot relay plate to stop relay, if any the anxious request signal that stops, then control peripheral devices with report to the police handle, with the man-machine interface communication, otherwise keep the complete machine power supply.
The present invention has following advantage:
1. automaticity height.The present invention adopts built-in industrial control machine+Controlled by Programmable Controller, and volume is little, and is easy for installation, all robotization control.2. cost is low.It is main body that the present invention adopts the technical grade embedded host, is equipped with Programmable Logic Controller and data acquisition module, realizes high reliability robotization control with low cost.
3. versatility is good.The present invention adopts the Platform Builder4.2 (Windows CE platform Core Generator) of Microsoft according to hardware configuration characteristic and applied environment demand, generate NK.BIN (Windows CE mapping document of operation system) through cutting, by network download in the storer of embedded system, use EmbeddedVisual C++4.0 (Microsoft's embedded-development environment) establishment watchdog routine down based on Windows CE (Microsoft's embedded OS) environment then, system has the graphical interfaces close friend, infrared keyboard is controlled conveniently alternately, because program adopts UNICODE (one 16 character set) coding and modular design, can expand, easily transplant.
4. good reliability of the present invention, the precision height.The present invention monitors that by industrial computer is omnidistance the interference of human factor has been avoided in the omnidistance control of Programmable Logic Controller, can work long hours in complex environment, adapts to downhole anti-explosion design, IP65 degree of protection.
5. the present invention has status surveillance, the functions such as inquiry prompting of reporting to the police.Multithreading is adopted in operation such as data acquisition, interface renewal, data persistence, can well guarantee the real-time requirement, for the safe handling of equipment provides safeguard.
6. the present invention has disaster recovery/restore funcitons, and program timing is preserved intermediate data, damages repair data file automatically when data file appears in system, guarantees the normal operation of program.
Description of drawings:
Fig. 1 is a host computer structural representation of the present invention;
Fig. 2 is a host computer electrical schematic diagram of the present invention;
Fig. 3 is a pc control procedure process flow diagram of the present invention;
Fig. 4 is a host computer remote data transmission synoptic diagram of the present invention;
Fig. 5 is a slave computer electrical schematic diagram of the present invention;
Fig. 6 is a program of lower computer control flow chart of the present invention;
Fig. 7 is the relay circuit schematic diagram;
Fig. 8 is the multi-channel conversion circuit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
As Fig. 1, shown in 2, the present invention includes with host computer, slave computer and with slave computer for control core peripheral apparatus control circuit, all be placed in the peripheral automatically controlled explosion-proof tank that reaches mining safe class, described host computer is core with the industrial computer, the central processing unit of being located at this industrial computer inside links to each other by the data communication line of display interface device with display (display is selected the LCD of the CJM10C011 series of the color crystalline substance in Jilin for use), link to each other with the programming port of Programmable Logic Controller in the slave computer by serial line interface (COM1), be connected with keyboard by keyboard interface, the power interface of industrial computer is connected to external power source by first Switching Power Supply (selecting the Switching Power Supply of D-60A model for use) and wave filter (selecting the alternating current filter of DL-3A2 model for use), the output terminal of this first Switching Power Supply also is connected to inverter boards, and the high-voltage power supply output terminal of this inverter (this inverter and LCD are supporting) is connected to the power interface of display; There are application management program and pc control procedure in the described central processing unit.
Mainboard of the present invention adopts embedded main board (selecting the embedded main board that grinds magnificent PCM3350 model for use).The operator can carry out the secure interactive operation by infrared keyboard, LCD is monitored in real time with the graphical interfaces of true color, Programmable Logic Controller can obtain the data of various collectors, long-range host computer links to each other with central processing unit in the industrial computer by network interface, real time data regularly can be sent in the database of host computer forever to preserve.
Pc control procedure adopts modular design, comprising: initialization module, voltage, electric current display control module, temperature, pressure display control module, the local persistence module of data, fault masking module, the fault inquiry module, remote data transmission module, interface update module and withdraw from module; Described initialization module initialization Application Program Interface, the control system parameter is set, serial ports with the Programmable Logic Controller communication is mated configuration and opens connection, from Programmable Logic Controller, read the various original states of current coalcutter then, be next step ready for operation;
Described voltage, electric current display control module are finished the real-time voltage current value that reads current each service part of coalcutter from Programmable Logic Controller (it links to each other with voltage-current sensor), judge whether to go beyond the scope, and just eject the warning interface if exceed;
Described temperature, pressure display control module are finished the real time temperature force value that reads current each service part of coalcutter from Programmable Logic Controller (it is synthermal, pressure transducer is continuous), judge whether to go beyond the scope, and just eject the warning interface if exceed;
The local persistence module of described data is finished the various monitor datas that will gather in real time and is kept in the historical data base, carries out query analysis when supply and demand is wanted;
Described fault masking module, finish the shielding/releasing function of shielding of some detection, because coalcutter is operated under the extreme rugged environment, the sensor that is connected is more, some sensor is aging, damage can cause false alarm, at this moment some monitored item shielding can be guaranteed operate as normal, remove shielding after sensor maintenance, the replacing again;
Described fault inquiry module finishes that the fault data in the historical data base is shown, and for user of service and technician's analyzing failure cause, finds out solution;
Described interface update module is finished the data presentation of will be in real time gathering on graphical interfaces, and its adopts timer and two kinds of methods of Event triggered to realize, for timer, belongs to and periodically updates data, and for incident, belong to more new data of aperiodicity;
Described remote data transmission module finishes that the monitor data in the local data base is sent in the SQL Ser-ver2000 database in the host computer by network.
Now described with regard to the programming thought aspect: process is an example of application program.Process is an inertia, and it must have at least one thread (main thread), and thread is responsible for carrying out the code that is included in the process address space.Individual process can have a plurality of threads, and each thread is its CPU register and stack again.Operating system for each independently thread carry out the time scheduling of CPU, come a plurality of threads to carry out at the same time outwardly, in fact operating system is distributed timeslice with round robin to thread.
Analyze the processing procedure of gathering, storing, transmitting, inside may the life period redundancy.With the collection is example, and system may be in the Hardware Response Delay state of waiting for.This moment, CPU was occupied, but in fact effective thing is not done by system, causes the waste of computational resource.For the computing power of more efficient use CPU, in this system, adopt multithreading to realize the scheduling of task.
Thread functional analysis and thread dividing are as follows: main thread: the thread that system was created automatically when it was process initiation, utilize message circulation response user operation.It mainly finishes following function: the initialization of thread management, serial port and finish handshake mechanism, the response user steering order.
Gather sub-thread: be responsible for control hardware, the coalcutter relevant information is collected in the host memory, analyze data and start as required and report to the police;
Sub-thread sends control information: be responsible for control command is delivered in the Programmable Logic Controller;
Sub-thread is upgraded at the interface: the real time data mode with chart on graphical interfaces that collects is shown, reach synchronous;
The sub-thread of local datastore: with real-time data memory in the storer of embedded system;
The sub-thread of remote data transmission: be responsible for regularly new real time data being sent in the database in the long-range host computer.
Gathering sub-thread is mutex relation with the sub-thread that sends control information.Collection, interface are upgraded and local datastore is the streamline relation, the two internal memories of the data buffering between them/filebuf realization.The data that collect are upgraded the sub-thread of sub-thread, the sub-thread of local datastore and remote data transmission for the interface and are used.This just need accomplish effective thread synchronization control.
Windows CE operating system provides object synchronously such as critical section, mutex, semaphore, incident, has adopted incident and mutex synchronization object to realize in actual the realization.Now be described below: event object is a kind of of system kernel object.Each kernel objects is an internal memory that is distributed by system kernel, can only be visited by kernel, and application program can not be located the data structure of kernel objects and the content that directly changes them in internal memory like this.System provides time array function to be used for realizing synchronously: WaitForSingleObject and WaitForMultipleObjects.WaitForSingleObject returns when signal condition or wait timeout are arranged when allocate event, when if the allocate event object is no signal condition, call sub-thread and enter a kind of high efficiency waiting status, call sub-thread this moment and take seldom CPU time and become until incident signal condition or overtime is arranged.WaitForMultipleObjects and WaitForSingleObject functional similarity, it can wait for a plurality of times, returns when signal condition or wait timeout are arranged or waits for that all incidents return when signal is arranged according to the difference of waiting for type any one in can the waiting event handle.The state of mutexes object just has signal when it is not had by any thread, when its no signal then when being had.At first, set up the mutexes object, use the CreateMutex function to obtain handle: then, (before being access shared resources) calls WaitForSingleObject before thread may produce the zone of conflict, handle is passed to function, request takies Mutex object, and the shared resource visit finishes, and uses the ReleaseMutex function to discharge taking the mutexes object; The mutexes object can only be taken by a thread at synchronization, when the mutexes object is taken by a thread, if there is another thread to want to take it, must wait until that then last thread could success after discharging.
As shown in Figure 3, be the pc control procedure process flow diagram, main thread at first disposes and opens serial port, is complementary with the Programmable Logic Controller communication setting with assurance, starts a plurality of worker threads then, waits for user's control commands; Gather the various data in the responsible data field of constantly gathering in the Programmable Logic Controller of sub-thread, after data acquisition is finished, effectively sub-thread is upgraded at the interface, the sub-thread of local datastore finishes the renewal interface display respectively and data persistence is operated to start to make event object, this process detects the data scope simultaneously, just ejects warning message if go beyond the scope; Sending the sub-thread of control information finishes Programmable Logic Controller is sent control information; The sub-thread of remote transmission is responsible for regularly in the database of the data transmission in the local data base in the distance host.
As shown in Figure 4, be host computer remote data transmission synoptic diagram of the present invention.Client is presented as embedded device (industrial computer end) application program, application program realizes read-write and inquiry to local move database by built-in SQL Server CE Client Agent, simultaneously SQL Server CE Client Agent also realized with remote data base synchronously.Server end (upper computer end) is presented as IIS middle layer and SQL Server database.Also there is a SQLServer CE agency in IIS (Web server of Internet net) middle layer, is used for handling the request of data of mobile device end; SQL Server database is handled the data that IIS sends by SQL Server OLE DB Provider physical layer interface.In installation system, we can be contained in IIS and SQL Server 2000 on same the machine, separate with fire wall in the middle of also can being installed separately on different machines.Embedded device and server end mainly send T-SQL order and Data transmission by http protocol.The application data transmission adopts push-model (Push), at first generates a CCERDA (remote data access) object; Then use following api function that the CCERDA object is carried out parameter configuration: setInternetURL (the long-range host computer network address is set), setInternetLogin (IIS server log number of the account is set), setInternetPassword (IIS server log password is set), setLocalConnectionString (local connection string is set), setConnectionString (concatenation character is set); Shift the database of SQL Server 2000 on the data of using the Push function that mobile device has been changed at last onto.
As shown in Figure 5, slave computer is made up of Programmable Logic Controller, receiver of remote-control sytem, relay circuit, multi-channel conversion circuit, second switch power supply, intrinsic safety electric source, remote control transmitter and active station, wherein the second switch power supply is Programmable Logic Controller and receiver of remote-control sytem power supply, intrinsic safety electric source is two active station power supplies, and Programmable Logic Controller is used for gathering signal and control relay circuit and the peripheral plant equipment that peripheral sensor is sent here, again by two serial ports and active station communication; For this device of dirigibility that improves operation has adopted remote control mode and station prosecutor formula again.
Slave computer major control function of the present invention comprises the operation of controlling coalcutter, the lifting of left and right sides cylinder, and every data (for example current value of left and right sides cutting motor, traction electric machine, temperature value) of the current running status of monitoring coalcutter, and monitoring alarm that can be real-time has the historical function of reporting to the police of simple queries; Control core of the present invention is selected the FPG-C32T control module of SUNX for use, comprising 16 digital quantity inputs, 16 digital quantity outputs; A FPG-802 address card is comprising two RS232 communication ports; Two FP0-A80 A/D conversion input blocks, wherein each module comprises the input of 8 tunnel analog quantitys; A FP0-A21 A/D converting unit is comprising 2 road analog input units, 1 tunnel analog quantity output unit; Owing to limit by system architecture, develop a multi-channel conversion circuit voluntarily, not only solved the analog quantity not enough problem of counting, reduced cost again, select 1 multiplexing module comprising two CD4051B8, can expand 16 tunnel analog quantitys input (using 1 in the present embodiment); Because the digital quantity of control module is output as transistor output, its load capacity deficiency, drive outside electrical equipment so design a relay circuit voluntarily, wherein select 8 the DC 5A, DC24V relay of OMRON (Omron) and 1 DC8A, DC24V relay for use; Remote control dash receiver and transmitter are selected the product of Taiwan Yu Ding for use, wherein have No. 11 relay output signals, can be used to 11 keys as trigger pip; Two active stations are selected the MD204L LCD of man-machine electronics corporation (eview company) for use, are characterized in the 192x64 dot matrix, can show 12 Chinese characters of 4 row, membrane keyboard, matrix form 4 row 4 row, monolithic processor controlled peripheral circuit; First Switching Power Supply and second switch power supply are commercial product, select 80W for use, AC24V input, DC24V/3A, DC12V/1A output (this power supply is each unit, remote control receiver module, multi-channel conversion circuit and the relay circuit power supply of PLC); Two intrinsic safety electric sources are selected AC24V input, DC12V output (this power supply is two active station power supplies) for use; The present invention with Programmable Logic Controller as the controller core, 15 road digital quantities inputs (having 11 tunnel inputs as telepilot, 4 tunnel imports as fault-signal) have wherein been used, 12 road digital quantities output (wherein 9 tunnel is relay, 3 tunnel control ends as the multipath conversion plate that drive on the relay board), (all are input as each check point of coalcutter to the input of 21 tunnel analog quantitys, current detection value, voltage detecting value, thermal resistance (PT100) detected value are wherein arranged, 1 tunnel analog quantity output (given frequency converter analog voltage control rotating speed).
Behind the coalcutter complete machine powering, the DC24V of second switch power supply output supplies remote control receiver module and multi-channel conversion circuit work for PLC4 unit and relay circuit work, DC12V, and two intrinsic safety electric sources are for two active station work; This PLC has 3 RS232 mouths, and wherein programming port and upper machine communication come swap data, two communication ports and two active station communications in addition; Each check point is by the digital quantity (4 tunnel) of Programmable Logic Controller, the state that analog quantity (21 tunnel) input monitored, controlled coalcutter, and Realtime Alerts; Select for use 11 of telepilot to trigger key for the ease of operation, carry out Long-distance Control by the digital quantity input of PLC; Digital quantity output has 9 road relays that drive on the relay circuits, finally controls the peripherals such as the loop that powers on, frequency converter, solenoid valve of coalcutter; Other has 3 the tunnel to open the control end of numeral output as the multipath conversion plate, and one tunnel analog quantity output 0-10V control of conversion device is controlled rotating speed.
As shown in Figure 6, be slave computer control program process flow diagram, coalcutter complete machine powering at first, the self-insurance contact by PLC keeps powering on the loop, to guarantee the complete machine power supply of system works; Enter the data acquisition computing then,, as the data field, be used for participating in control, report to the police and show through the computing judgment processing by gathering peripheral various sensor signals; Next the concrete parameter that proposes according to the user comes the urgency on the pilot relay plate to stop relay, finally controls the complete machine power supply; Enter control peripheral devices and processing, the man-machine interface communication of reporting to the police at last; Heighten control by the button control internal relay on the active station, drive the relay on the relay board, finally drive the lifting that the external electric magnet valve is controlled left and right sides cylinder.Traction control is controlled internal relay by the button on the active station, drive the relay on the relay board, the given input of control of conversion device, this control procedure comprise that permanent power regulates part automatically, and its implementation is controlled the acceleration and deceleration of haulage speed by the cutting motor current value that detects; Report to the police to handle, the upper lower limit value of each detected value by the sensor signal gained is controlled warning, ejects the warning dialog box on the active station immediately in case report to the police to occur in; PLC and man-machine interface communication, its function are mainly the important parameter that shows the current running status of some coalcutter, alarm, Presentation Functions such as operation interface.
As shown in Figure 7, relay circuit has No. 9 relays, their coil common ports are received DC24V, the other end is received the output contact of PLC as control end, wherein Z1, Z2, Z3, Z4 control the lifting of left and right sides cylinder respectively, the band-type brake of Z5 control traction electric machine and since this No. 5 relay drive peripheral circuit solenoid valve, it be inductive load, so relay output is with fly-wheel diode to guarantee that output end voltage is stabilized on the DC24V.Z6, Z8 relay are for the control of conversion device starts/stops, the lead signal." 0 " is that a kind of state, " 1 " are another kind of state.The Z10 relay is an emergency stop switch, control coalcutter complete machine power supply, and it gets an electric shock and is normally off.
As shown in Figure 8, multi-channel conversion circuit selects for use CD4051B 8 to select 1 multichannel switching chip, and its power supply (Vdd) meets DC12V, and Vee and Vss receive 0V, and the INH disable bit is received on the 0V.This circuit is exported by 3 switching values and is controlled gating 8 tunnel signals collecting, and wherein native system only uses 4 road its most significant digits " C " to be changed to " 1 ", and all the other two have 4 kinds of status strobe 4 road signals.
The present invention adopts the embedded main board grind China, and operating system adopts Windows CE, and monitoring software adopts Embedded Visual C++4.0 too development, and system's highly versatile, automaticity height, cost is lower and have the characteristics of friendly interface.Embedded OS Windows CE towards from the most basic system to 32 senior embedded systems, be applicable to existing and follow-on 32-bit microprocessor family, have strong, the higher real-time characteristic of customizability, to ambulant good support, abundant GUI (graphical interface of user) interface with to distinguishing features such as API (application programming interfaces) function supports.Current supervisory system towards networking, can the embedding direction develop, based on the embedded system of Windows CE the support of above demand is reached and is close to perfect degree, Microsoft provides efficiently that developing instrument makes the progress of developing improve greatly simultaneously.
Claims (8)
1. coalcutter embedded digitalization automaton, it is characterized in that: comprise host computer, carry out slave computer that communication is connected with host computer and be the peripheral apparatus control circuit of control core with the slave computer, all be placed in the peripheral automatically controlled explosion-proof tank that reaches mining safe class, the industrial computer in the host computer also is connected to long-range host computer by network interface.
2. by the described coalcutter embedded digitalization of claim 1 automaton, it is characterized in that: described host computer is core with the industrial computer, the central processing unit of being located at this industrial computer inside links to each other with the data communication line of display by display interface device, link to each other with the programming port of Programmable Logic Controller in the slave computer by serial line interface (COM1), be connected with keyboard by keyboard interface; The power interface of industrial computer is connected to external power source by first Switching Power Supply and wave filter, and the output terminal of this first Switching Power Supply also is connected to inverter, and the high-voltage power supply output terminal of this inverter is connected to the power interface of display; There are pc control procedure and application management program in the described central processing unit.
3. by the described coalcutter embedded digitalization of claim 2 automaton, it is characterized in that: described pc control procedure is: at first dispose and open serial line interface, be complementary with the Programmable Logic Controller communication setting with assurance; Start a plurality of worker threads then, wherein gather the various data in the responsible data field of constantly gathering in the Programmable Logic Controller of sub-thread, after data acquisition is finished, effectively sub-thread is upgraded at the interface, the sub-thread of local datastore finishes the renewal interface display respectively and data persistence is operated to start to make event object, this process detects the data scope simultaneously, just ejects warning message if go beyond the scope; The sub-thread that sends control information is finished Programmable Logic Controller is sent control information; The sub-thread of remote transmission is responsible for regularly in the database of the data transmission in the local data base in the distance host.
4. by the described coalcutter embedded digitalization of claim 2 automaton, it is characterized in that: described host computer application management program is: user side is presented as that embedded device is an industrial computer end application program, application program is read and write and is inquired about the local move database of embedded device by built-in SQL Server CE user agent, simultaneously SQL Server CE user agent also and long-range host computer database synchronously; Server end is that long-range upper computer end is presented as IIS middle layer and SQL Server database; Also there is a SQL Server CE agency in the IIS middle layer, and it handles the request of data of mobile device end; SQL Server database is handled the data that IIS sends by SQL Server OLE DB Provider physical layer interface.
5. by the described coalcutter embedded digitalization of claim 1 automaton, it is characterized in that: described slave computer comprises Programmable Logic Controller, active station, remote control transmitter, receiver of remote-control sytem, relay circuit and multi-channel conversion circuit, transmitter module in the above-mentioned remote control transmitter and receiver of remote-control sytem carry out wireless telecommunications, this receiver of remote-control sytem is connected to the digital-quantity input interface of Controlled by Programmable Controller unit by the remote control receiver module, and the digital quantity input port of this control module links to each other with the fault-signal detecting element; Relay coil in the relay circuit, the control end in the multi-channel conversion circuit are connected to the digital-quantity output interface of the control module of Programmable Logic Controller respectively, and the contact of each relay inserts in the control loop of peripherals on the relay board; The signal of each check point of peripherals is connected to the mould/number conversion input block in the Programmable Logic Controller and the analog quantity input of A/D converter as the analog quantity input signal; The analog quantity delivery outlet of its A/D converter links to each other with frequency converter;
The power interface of above-mentioned each unit, multi-channel conversion circuit and relay circuit is connected to external power source through the second switch power supply respectively; Programmable Logic Controller links to each other with host computer by programming port, carries out communication by communication port and active station and is connected, and active station is connected to external power source by intrinsic safety electric source; There is the slave computer control program in the central processing unit of control module.
6. by the described coalcutter embedded digitalization of claim 5 automaton, it is characterized in that: described relay circuit has multicircuit relay, the coil common port is all received the DC24V output terminal of second switch power supply, the other end is received the digital-quantity output interface of the control module of Programmable Logic Controller, and the contact of relay is connected to respectively in each control loop of peripherals; Have in the control loop of inductive load, its corresponding relay coil is in series with fly-wheel diode.
7. by the described coalcutter embedded digitalization of claim 5 automaton, it is characterized in that: described multi-channel conversion circuit is a multiplexing module, its power positive end (Vdd) is connected to the DC12V output terminal of second switch power supply, power supply negative terminal (Vee, Vss) is connected to 0V, the control input end of this multiplexing module is connected to the digital-quantity output interface of control module in the Programmable Logic Controller, input end of analog signal is connected to on-the-spot detecting element, and analog signal output is connected to the analog quantity input of the A/D converter in the Programmable Logic Controller.
8. by the described coalcutter embedded digitalization of claim 5 automaton, it is characterized in that: the idiographic flow of described slave computer control program is: coalcutter complete machine powering at first, self-insurance contact by Programmable Logic Controller keeps powering on the loop, to guarantee the complete machine power supply of system works; Enter the data acquisition computing then,, as the data field, be used for participating in control, report to the police and show through the computing judgment processing by gathering peripheral various sensor signals; Next the body parameter that possesses that proposes according to the user comes the urgency on the pilot relay plate to stop relay, if any the anxious request signal that stops, then control peripheral devices with report to the police handle, with the man-machine interface communication, otherwise keep the complete machine power supply.
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