CN105700496A - DO-point remote synchronous mapping and expanding system and method - Google Patents
DO-point remote synchronous mapping and expanding system and method Download PDFInfo
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- G05B19/41885—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by modeling, simulation of the manufacturing system
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Abstract
In order to solve a problem in conventional digital transmission, the invention provides a DO-point remote synchronous mapping and expanding system and method. The system comprises a multi-point DO state centralized processing module, a communication device, a synchronous mapping DO output module, and a programmable synchronous expanding module. The multi-point DO state centralized processing module receives, compares, analyzes and processes DO state information, encrypts DO information required to be transmitted into DO data which is then transmitted by the communication device to the synchronous mapping DO output module and the programmable synchronous expanding module. The synchronous mapping DO output module decodes the DO data into the DO information and transmits the DO information to a corresponding DI end. The programmable synchronous expanding module decodes the DO data of a selected point into DO information, synchronously expands the DO information, and transmits the expanded DO information to the corresponding DI end. The DO-point remote synchronous mapping and expanding system and method have advantages of not changing the digital transmission mode of an original apparatus/system, not requiring a plenty of cables to be connected one to one, synchronously mapping and expanding any DO point in a multi-address multi-point way.
Description
Technical field
The present invention relates to automatic data collection control field, be specifically related to a kind of can arbitrary extension DO remote synchronization map, extension system and method。
Background technology
In modern industry automatization, there is substantial amounts of output switch parameter in industrial electrical installation, especially at collecting and distributing digital acquisition system, for instance in typical DCS system, there is thousands of output switch parameter。At equipment side, these outputs are typically all without source contact, are connected to acquisition system by cable。For acquisition system, these points are On-off signal point (being called for short DI)。Equally, DCS system also has substantial amounts of output switch parameter to equipment end, allows equipment perform the operations such as start and stop, control, state change。
Industrial electrical installation, respectively in each place of industry spot, is typically in tens of rice to hundreds of meters with the distance of acquisition system。Even if in a small-sized acquisition system only having hundreds of points, the status information gathering these switching values is also required to the multicore cable of thousands of meters。Construction cost and the cost of cable own of laying cable are undoubtedly very big。
Present situation is: traditional DCS system adopts in a large number in industry spot。The software of system and front-end collection and output module customize already, scale。Any equipment being newly added all can not change the structural shape of original system。It is to say, the facility switching amount output point of industrial equipment (being called for short DO) can only access the DI module of DCS with the form of switching value, system does not accept the intervention of other forms (such as form of communication)；Meanwhile, its communication structure of different DCS is entirely different, and the manufacturer as universal industrial electrical equipment is also impossible to develop communication interface exclusively for certain manufacturer。So the output switch parameter of industrial electrical installation is all adopt cable to be connected with acquisition system。
Summary of the invention
The present invention is directed to the deficiencies in the prior art and provide a kind of DO point remote synchronization mapped system, its object is to: only use a small amount of connection just can at the multiple DO point of offside reproduced in synchronization, it is possible to achieve many places, multi-unit demands synchronization extend。
The technical scheme realizing invention is: DO point remote synchronization mapped extension system, including with lower part: processing module, communication device, synchronization map DO output module in multiple spot DO state set；Wherein, in multiple spot DO state set, data are sent to synchronization map DO output module after receiving and process DO status information by processing module by communication device, and synchronization map DO output module transmits to corresponding DI end after DO data are converted into DO information。
In described DO state set, processing module includes: DO amount accesses part, latch, microprocessor MU1 and data transmitting portion；Wherein, DO amount access section is locked by lock after separately winning and taking DO information；Locking data is quickly read by MU1, and contrast collection result last time, changing if any DO information, after D information carrying out segmentation restructuring and encrypting and save as DO data, the data that MU1 is undertaken segmentation restructuring encryption by data transmitting portion are sent to communication device；As DO information does not change, then do not send information。
Preferably, DO measures access part and can obtain, after carrying out light-coupled isolation by photo-coupler, the DO information that annoyance level is relatively low。
Preferably, DO measures access point less than 100 without source contact。
Preferably, adopt latch corresponding with microprocessor, 8 latch as corresponding in 8-bit microprocessor。
Further, it is possible to adopt multiple latch latch mode information in turn。
Described communication device can be communication cable, communication cable or GPRS device。
Described synchronization map DO output module includes: data receiver part, microprocessor MU2 and mapping synchronism output part；Wherein, data receiver part connecting communication device, receive the DO data that in multiple spot DO state set, processing module sends；The information received is converted and processes as after DO information, mapping synchronism output part exporting the DI end of this side system/equipment by MU2, then maintains the DI end original DO status information of transmission to this side system/equipment as do not received new DO data。
Preferably, described DO point remote synchronization mapped extension system also includes programmable synchronous expansion module, and described programmable synchronous expansion module and synchronization map DO output module simultaneously but only receive the DO data of chosen DO point。
Further, described programmable synchronous expansion module includes: data receiver part, microprocessor MU3 and selected synchronism output part；Wherein, data receiver part connecting communication device, from multiple spot DO state set, processing module receives selected DO data；It is after DO information that the MU3 data to receiving carry out conversion processing, counting that selected DO point is extended as required carries out synchronizing extension DO information, exported the DI end of this side system/equipment afterwards by selected synchronism output part, then maintain the DI end original DO information of transmission to this side system/equipment as do not received new DO data。
Preferably, all DO points can possess general AC250V5A load capacity。
Present invention also offers a kind of DO point remote synchronization mapping method, its object is to: overcome the input and output of switching value between current DCS system and acquisition system to connect DO point and the problem of corresponding DI point only by connection。
The technical scheme realizing invention is: a kind of DO point remote synchronization mapped extension method, comprises the following steps:
S1. gather DO information and compare with the collection result of last time；When DO information changes, data are carried out segmentation restructuring and encrypts, the data after change are transferred out；When DO information is not changed in, repeat to send data by the communication cycle set。
S2. process, through step S1, the DI end exporting this side after the data decoded back encrypted is DO information by what receive, then maintain the original DO information of transmission as do not received new DO information。
Encryption method described in step S1 is: latch data is formed the inquiry pointer of one group of 12 bit address by algorithm, is cured as the figure code table lattice of specific 2k byte in program storage area, 12 bit pointers finds the transmission key of continuous 2 bytes；So far, frame data will be made up of frame head, recombination data and key, totally 7 byte composition。
Preferably, step S2 also includes: receive selected DO point data, is undertaken synchronizing extension by required counting after being decoded reduction, and output is to the DI end of this side afterwards, then maintains the original DO information of transmission as do not received new DO information。
Further, described synchronization extended method is: the DO point needing extension carries out DO information and replicates extension and bind the address information of corresponding DI point。
Coding/decoding method described in step S2 is: after receiving data, finds data to compare according to data key, accept and believe this data after legal in the 2k figure code table lattice that this is same。
The advantage of DO point remote synchronization mapped system of the present invention and method is in that:
1. do not change electrical equipment and the On-off signal of acquisition system, output based version, in the way of synchronization map, instead of a large amount of cable one to one connect；From the angle of electrical equipment, can be considered the reach of data acquisition module；From the angle of data collecting system, it is possible to be considered as the extension of electrical equipment DO point；
2. have employed cipher mode transmission data, as data channel (cable, optical fiber, GRPS) sends fault, DO output module still can keep the state before fault constant；It is better than traditional cable and is connected to misinformation signal possible when there is line fault。
3. any one DO point can how, Multipoint synchronous map and extension。Data maximum delay, less than 10ms, fully meets the requirement that general acquisition system maximum delay is not more than 250ms。
4. the DO point that the DO point of synchronization map output, synchronization extend is identical with the DO information of electrical equipment output physically；Ensure electrically completely isolated, it is to avoid overlength cable connects the interference being likely to cause simultaneously。
Accompanying drawing explanation
Fig. 1 is the system structure schematic diagram of the present invention；
Fig. 2 is the method flow schematic diagram of the present invention。
Specific embodiment
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is described in more detail。Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention。
Inventor, through research, has invented and a kind of has used less communication cable, the DO information transmission system of optical cable and method。This system and method is by the DI module end of the output switch parameter synchronization map of electrical equipment to data collecting system；A large amount of DO of data collecting system can also be exported synchronizing information and be mapped to the DI end of electrical equipment。This synchronization map does not change the physical form of each contact, but changes the form of transmission medium, so as to greatly reduce cable laying amount, great Practical significance compared with tradition multicore cable transmission form。
The present invention can realize the remote synchronization of facility switching amount output and reproduce when not using a large amount of connection cable；Selected DO can also be carried out Multipoint synchronous extension。
As it is shown in figure 1, DO point remote synchronization mapped system of the present invention includes:
Processing module, communication device, synchronization map DO output module and programmable synchronous expansion module in multiple spot DO state set。Wherein:
In described DO state set, processing module includes: DO amount accesses part, and this part carries out, without source contact, the Quick Acquisition that 0.5mS is the cycle to one group 32 after carrying out light-coupled isolation mainly through photo-coupler, the DO information relatively low to obtain annoyance level；48 tri-state latch, this part dynamically locks in turn to gathering the DO information obtained；The locking data of latch is quickly read by 8-bit microprocessor MU1, completing a read cycle is 0.5mS, the data that the data of this acquisition of relative analysis simultaneously and last time obtain, as DO information changes, then carry out data segmentation restructuring and encryption is stored as DO data, afterwards DO data are sent to data transmitting portion, as do not changed, do not send data；Data transmitting portion, DO data are sent to communication device by this part by serial ports sending assembly。The data segmentation restructuring encryption method that the present invention adopts is: formed the inquiry pointer of 12 bit address by algorithm by latch data, solidify the figure code table lattice of a kind of specific 2k byte in program storage area, 12 bit pointers in figure code table lattice, find the transmission key of continuous 2 bytes；So far, frame data are made up of frame head, recombination data, key, totally 7 byte；The time that above-mentioned collection, restructuring, ciphering process consume is not more than 1ms。
According to one embodiment of present invention, DO measures access part and can gather 100 DO information without source contact。
According to one embodiment of present invention, 5 16 tri-state latch DO information latch in turn, adopt the microprocessor of 16 bit to read simultaneously, process, convert latch information。
Described communication device is communication cable, and its one end is connected to the data transmitting portion of processing module in DO state set, and the other end is connected to the data receiver part of synchronization map DO output module and programmable synchronous expansion module。
The effect of described synchronization map DO output module is mainly transmitting the data received by output after decoding to the DO end of this side, it is ensured that identical with the DO of equipment end point, including: data receiver part, microprocessor MU2 and mapping synchronism output part；Wherein, data reception portion is divided into serial ports receiving unit, this assembly connecting communication cable, receives the DO data that in multiple spot DO state set, processing module sends；The DO data received are converted and process as DO information by MU2, mapped synchronism output part by 32 and corresponding DO information is exported the DI end of this side system/equipment, then maintain the DI end original DO information of transmission to this side system/equipment as do not received new DO data。
The effect of described programmable synchronous expansion module and synchronization map DO output module is mainly pressed quantity selected DO and counts and carry out Tong Bu extension, this module simultaneously but only receives chosen DO data, including: data receiver part, microprocessor MU3 and selected synchronism output part；Wherein, data reception portion is divided into serial ports receiving unit, this assembly connecting communication device, and from multiple spot DO state set, processing module receives selected DO data；The MU3 DO data conversion processing to receiving is DO information, after counting of afterwards selected DO point being extended as required carries out synchronizing extension DO information, exported the DI end of this side system/equipment by selected synchronism output part, then maintain the DI end original DO status information of transmission to this side system/equipment as do not received new DO data message。
According to example of the present invention: the DO12 of equipment side is extended to 3 synchronous points, and D028, DO32 respectively extend one, by initial programming, expansion module there are 3 dotted state identical with DO12, also have 2 points and D028, DO32 state synchronized；All DO points possess AC250V5A load capacity。
System is when using first, it is necessary to preset with lower part, and use arranges work and all carries out by software through serial ports:
(1) in multiple spot DO state set, processing module needs its signals collecting mode, communication baud rate before first use, unchanged repeat the transmission cycle and be configured。System default baud rate is 19200bps, and data are unchanged, and to repeat the transmission cycle be 5 seconds, and signals collecting is selected without filtering mode。
(2) synchronization map DO output module needs also exist for when using first carrying out arranging as described in step 1。
(3) programmable synchronous expansion module, carries out arranging the outer point that there is provision of and select to synchronize to extend when using first as described in step 1 except needing。
According to one embodiment of present invention, the baud rate selected during systemic presupposition is 2400bps；Adopting optocoupler filtering mode, described filtering mode refers to when data mode change, continuous acquisition n times, and namely data do not change again thinks and do not interfere with, and is change to reach stably；Filter times N=2～5。
According to one embodiment of present invention, during systemic presupposition, optional baud rate also has 9600,38400,57600。
Native system does not change electrical equipment and the On-off signal of acquisition system, output based version, instead of a large amount of cable one to one and connect in the way of synchronization map；From the angle of electrical equipment, can be considered the reach of data acquisition module；From the angle of data collecting system, it is possible to be considered as the extension of electrical equipment DO point；Have employed cipher mode transmission data, as data channel (cable, optical fiber, GRPS) sends fault, DO output module still can keep the state before fault constant；It is better than traditional cable and is connected to misinformation signal possible when there is line fault；Any one DO point can how, Multipoint synchronous map and extension。Data maximum delay, less than 10ms, fully meets the requirement that general acquisition system maximum delay is not more than 250ms；The DO point that the DO point of synchronization map output, synchronization extend is identical with the DO information of electrical equipment output physically；Ensure electrically completely isolated, it is to avoid overlength cable connects the interference being likely to cause simultaneously。
As in figure 2 it is shown, present invention also offers a kind of DO point remote synchronization mapping method, comprise the following steps:
S1. gather DO information and compare with the collection result of last time；When DO information changes, data are carried out segmentation restructuring and encrypts, described encryption method is: latch data is formed the inquiry pointer of one group of 12 bit address by algorithm, it is cured as the figure code table lattice of specific 2k byte in program storage area, 12 bit pointers finds the transmission key of continuous 2 bytes；So far, frame data will be made up of frame head, recombination data and key, totally 7 byte composition。Data after change are transferred out；When DO information is not changed in, repeat to send data by the communication cycle set；
S2. process, through step S1, the DI end exporting this side after the data decoded back encrypted is DO information by what receive, described coding/decoding method is: after receiving data, find data to compare according to data key in the 2k figure code table lattice that this is same, after legal, accept and believe this data。The original DO information of transmission is then maintained as do not received new DO information；Additionally, also include receiving selected DO point data, being undertaken synchronizing extension by required counting after being decoded reduction, output is to the DI end of this side afterwards, then maintains the original DO information of transmission as do not received new DO information；Described synchronization extended method is: the DO point needing extension carries out DO information and replicates extension and bind the address information of corresponding DI point。
It should be noted that and understand, when without departing from spirit and scope required by the claims in the present invention, it is possible to the present invention of foregoing detailed description is made various amendment and improvement。It is therefore desirable to the scope of the technical scheme of protection is not by the restriction of given any specific exemplary teachings。
Claims (10)
1.DO point remote synchronization mapped system, it is characterised in that include with lower part: processing module, communication device, synchronization map DO output module in multiple spot DO state set；Wherein, in multiple spot DO state set, processing module receives and is data sent to synchronization map DO output module by communication device after communication data by DO information processing, and synchronization map DO output module transmits after communication data is converted into DO information to DI end corresponding to this side apparatus/system。
2. DO point remote synchronization mapped system according to claim 1, it is characterised in that in described DO state set, processing module includes: DO amount accesses part, latch, microprocessor MU1 and data transmitting portion；Wherein, DO amount access section is locked by lock after separately winning and taking DO information；Locking data is quickly read by MU1, and contrast collection result last time, changing if any DO information, after D information carrying out segmentation restructuring and encrypting and save as DO data, the data that MU1 is undertaken segmentation restructuring encryption by data transmitting portion are sent to communication device；As DO information does not change, then do not send information。
3. DO point remote synchronization mapped system according to claim 2, it is characterised in that described communication device can be communication cable, communication cable or GPRS device。
4. DO point remote synchronization mapped system according to claim 1, it is characterised in that described synchronization map DO output module includes: data receiver part, microprocessor MU2 and map synchronism output part；Wherein, data receiver part connecting communication device, receive the DO data that in multiple spot DO state set, processing module sends；The information received is converted and processes as after DO information, mapping synchronism output part exporting the DI end of this side system/equipment by MU2, then maintains the DI end original DO status information of transmission to this side system/equipment as do not received new DO data。
5. DO point remote synchronization mapped system according to claim 1, it is characterized in that, described DO point remote synchronization mapped extension system also includes programmable synchronous expansion module, and described programmable synchronous expansion module and synchronization map DO output module simultaneously but only receive the DO data of chosen DO point。
6. DO point remote synchronization mapped system according to claim 5, it is characterised in that described programmable synchronous expansion module includes: data receiver part, microprocessor MU3 and selected synchronism output part；Wherein, data receiver part connecting communication device, from multiple spot DO state set, processing module receives selected DO data；It is after DO information that the MU3 data to receiving carry out conversion processing, counting that selected DO point is extended as required carries out synchronizing extension DO information, exported the DI end of this side system/equipment afterwards by selected synchronism output part, then maintain the DI end original DO information of transmission to this side system/equipment as do not received new DO data。
7.DO point remote synchronization mapping method, it is characterised in that comprise the following steps:
S1. gather DO information and compare with the collection result of last time；When DO information changes, data are carried out segmentation restructuring and encrypts, the data after change are transferred out；When DO information is not changed in, repeat to send data by the communication cycle set；
S2. process, through step S1, the DI end exporting this side after the data decoded back encrypted is DO information by what receive, then maintain the original DO information of transmission as do not received new DO information。
8. DO point remote synchronization mapping method according to claim 6, it is characterized in that, encryption method described in step S1 is: latch data is formed the inquiry pointer of one group of 12 bit address by algorithm, it is cured as the figure code table lattice of specific 2k byte in program storage area, 12 bit pointers finds the transmission key of continuous 2 bytes；So far, frame data will be made up of frame head, recombination data and key, totally 7 byte composition。
9. DO point remote synchronization mapping method according to claim 6, it is characterized in that, step S2 also includes: receive selected DO point data, undertaken synchronizing extension by required counting after being decoded reduction, output is to the DI end of this side afterwards, then maintains the original DO information of transmission as do not received new DO information；
Described synchronization extended method is: the DO point needing extension carries out DO information and replicates extension and bind the address information of corresponding DI point。
10. DO point remote synchronization mapping method according to claim 6, it is characterised in that coding/decoding method described in step S2 is: after receiving data, finds data to compare according to data key, accept and believe this data after legal in the 2k figure code table lattice that this is same。
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| CN108984122A (en) * | 2018-07-05 | 2018-12-11 | 柏建民 | Mapping formula remotely stores operating technology |
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