CN101311860A - Machine booking method - Google Patents
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- CN101311860A CN101311860A CNA2007101050489A CN200710105048A CN101311860A CN 101311860 A CN101311860 A CN 101311860A CN A2007101050489 A CNA2007101050489 A CN A2007101050489A CN 200710105048 A CN200710105048 A CN 200710105048A CN 101311860 A CN101311860 A CN 101311860A
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 claims abstract description 45
- 238000004364 calculation method Methods 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The present invention relates to a machine station reserving method. The present invention forecasts the arrival time of a special batch of goods according to history records and reserves a machine station for processing a special batch of goods according to the arrival time and the states of every machine station in a station, so as to avoid that the special batch of goods waste time for waiting for an idling machine station after arriving at the station, thereby reducing the production period of the special batch of goods.
Description
Technical field
The present invention relates to a kind of machine booking method, and particularly relate to a kind of reservation in order to handle the machine booking method of the needed board of special unit of cargo.
Background technology
Along with the competition of semiconductor industry is growing more intense, in order to shorten the production time to increase company's business revenue, how more effectively the various board in the managing chip factory, avoid piling the goods situation and produce and then make the maximum production capacity of each board performance, for semiconductor dealer now, be undoubtedly one of most important problem.Flow process with present processing unit of cargo (Lot) is an example, when (Wafer-In Process when WIP) arriving each website in the chip factory, must wait for after board in the website leaves unused beginning to carry out the unit of cargo processing at goods.
Yet, has a higher level for a collection of, and must know fast processing procedure and result at goods, wait for that in order to be reduced in each website board is idle for the time of handling unit of cargo, the existing practice is to come initialization system by manual operation, and then allows this arrive at a station at goods idle in advance the wait down of the needed board of goods.After arriving at a station at goods, must in the mode of manual operation board be switched back the state that can handle unit of cargo more equally, then carry out the unit of cargo treatment scheme again.
Be not difficult from the above mentioned to find,, must operate partly board in artificial mode and be introduced into idle state in advance and arrive at a station at goods to wait for for processing demands in response to special unit of cargo.Yet in a single day the millions of easily board of price leaves unused and not only can influence the production schedule of general unit of cargo, more can reduce the production capacity of board itself simultaneously, and then cause the greatest loss of company.
Summary of the invention
In view of this, the invention provides a kind of machine booking method, the needed board of the special unit of cargo of reservation processing reduces according to this and handles the needed time of special unit of cargo in advance.
The present invention proposes a kind of machine booking method, and the method comprises the following steps: at first to calculate special unit of cargo in the processing time of each website and the delivery time between the adjacent sites according to historical record.Then, according to processing time and delivery time, predict that special unit of cargo arrives the arrival time of each website.For each website,, calculate the occupancy of each board again with the board state of each board in the arrival time of correspondence and the website.Preengage board according to occupancy at last.
According to the described machine booking method of preferred embodiment of the present invention, wherein, historical record comprises that each board handles the processing cycle and the production cycle of unit of cargo at every turn, comprises processing cycle and production cycle calculating treatmenting time according to each board of website and calculate special unit of cargo in the processing time of each website.
According to the described machine booking method of preferred embodiment of the present invention, wherein, the step of calculating the delivery time of special unit of cargo between adjacent sites comprised according to transfer mechanism and transfer rate calculating delivery time.
According to the described machine booking method of preferred embodiment of the present invention, wherein, predict that the step that special unit of cargo arrives the arrival time of each website comprises for each website, with the processing time of all websites of being positioned at the website upstream, and the summation of the delivery time between all adjacent sites of website upstream is as arrival time.
According to the described machine booking method of preferred embodiment of the present invention, wherein, after the special unit of cargo of prediction arrives the step of arrival time of each website, more comprise and judge that whether arrival time is less than the longest subscription time.
According to the described machine booking method of preferred embodiment of the present invention, wherein, historical record comprises that each board handles the processing cycle and the production cycle of unit of cargo at every turn, and the step of calculating the occupancy of each board comprises that judgement board state is a treatment state, and according to arrival time, residue processing time, and the mean value of the above-mentioned production cycle of board calculates occupancy.Wherein, processing cycle and present time with board are calculated the residue processing time, and the calculating occupancy=(Arrival_T-Remained_T)/Avg_TC, and Arrival_T is an arrival time, Remained_T is the residue processing time, and Avg_TC is the mean value of production cycle.
According to the described machine booking method of preferred embodiment of the present invention, wherein, historical record comprises that each board handles the processing cycle and the production cycle of unit of cargo at every turn, send out the step of occupancy and comprise and judge that the board state is an idle state and calculate each board, and the maximal value of sending out the processing cycle above-mentioned according to arrival time, board, and the mean value of the above-mentioned production cycle of board calculates occupancy.Wherein, calculate occupancy=(Arrival_T Max_TM)/Avg_TC, Arrival_T is an arrival time, and Max_TM is the maximal value in processing cycle, and Avg_TC is the mean value of production cycle.
According to described machine booking method of preferred embodiment of the present invention, wherein, the step of preengaging board according to occupancy comprises that reservation has minimum occupancy, and occupancy is less than 1 board.
According to the described machine booking method of preferred embodiment of the present invention, wherein, more comprise according to the board characteristic of each board according to the step of occupancy reservation board and to preengage board.
According to the described machine booking method of preferred embodiment of the present invention, wherein, after the step of reservation board, more comprise when special unit of cargo arrives website, board with reservation is handled special unit of cargo, and processing cycle and production cycle that the board of reservation is handled special unit of cargo are recorded in historical record.
The present invention predicts that according to historical record special unit of cargo arrives the time of website, and the while is according to the state of each board in this arrival time and the website, preengage the board that is suitable for handling special unit of cargo, thereby must wait for the idle spent time of the board that needs after avoiding special unit of cargo to arrive website, reach the purpose of the production cycle that shortens special unit of cargo according to this.
For above-mentioned feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is the process flow diagram of the machine booking method that illustrates according to preferred embodiment of the present invention.
Fig. 2 is the process flow diagram of the computing method of the board occupancy that illustrates according to preferred embodiment of the present invention.
Fig. 3 is the process flow diagram of the computing method of the board occupancy that illustrated according to another preferred embodiment of the present invention.
The reference numeral explanation
110～170: each step of the described machine booking method of preferred embodiment of the present invention
210～220: each step of the computing method of the described board occupancy of preferred embodiment of the present invention
310～320: each step of the computing method of the described board occupancy of another preferred embodiment of the present invention.
Embodiment
At semiconductor production line, understand the special unit of cargo that its processing procedure also obtains result fast for needs, if can be before carrying out treatment scheme, the board that reservation is suitable for using in each website in advance certainly will can reduce the stand-by period and improve the production capacity of special unit of cargo.The present invention is based on above-mentioned viewpoint and then develops a kind of machine booking method of.In order to make content of the present invention more clear, below come the example that to implement according to this really as the present invention especially exemplified by embodiment.
Following embodiment is that the production line with the chip factory is an example, how illustrate that before special unit of cargo arrives a certain website the prior needed board of the special unit of cargo of reservation processing shortens the detailed step of the production cycle of special unit of cargo according to this.For convenience of description, the production line of hypothesis chip factory has 2 websites (being respectively first website and second website) in following embodiment, and 3 boards is arranged in order to handle unit of cargo in each website respectively.Yet the number of above-mentioned website and board only is in order to illustrate, and is not in order to limit the present invention.In other words, the present invention can preengage action at website and board number arbitrarily, does not limit its scope at this.
In the present embodiment, when each unit of cargo by each website and after disposing, the pairing processing cycle of all boards and the production cycle of be responsible for handling this unit of cargo all will be recorded in the middle of the historical record.Wherein, the processing cycle represents that board is from beginning to finish the needed time of parcel to processing; On behalf of board, the production cycle then handling continuously under the state of unit of cargo, produces the needed time of parcel (promptly comprise and transmitting the needed time of unit of cargo).
Fig. 1 is the process flow diagram of the machine booking method that illustrates according to preferred embodiment of the present invention.See also Fig. 1, shown in step 110, before preparing to handle unit of cargo, if judge that via special marking the unit of cargo that institute's desire is handled is special unit of cargo, then according to the processing cycle and the production cycle of each board in corresponding first website and second website in the historical record, calculate special unit of cargo respectively in processing time of first website and second website.And calculate special unit of cargo according to transfer mechanism and transfer rate and be sent to the needed delivery time of second website by first website.
Then in step 120,, predict that special unit of cargo arrives the arrival time of each website according to above-mentioned processing time and delivery time.In the present embodiment, for each website in the chip factory, obtain the processing time of all websites that are positioned at each website upstream according to historical record, and the delivery time between all adjacent sites of each website upstream, and with the next arrival time that arrives each website as special unit of cargo of the summation of above-mentioned processing time and delivery time.To calculate the arrival time that special unit of cargo arrives second website is example, if calculating special unit of cargo according to historical record is 2 hours in the needed processing time of first website, and by the delivery time that first website is sent to second website be 1 hour, so just measurable special unit of cargo can arrive second website after arriving 3 hours of first website.
Behind the arrival time of the special unit of cargo of prediction, shown in step 130, judge that whether arrival time is less than the longest subscription time.Wherein, the account form of long subscription time for example can calculate the longest unit of cargo processing time of board in the chip factory according to each board pairing processing cycle and production cycle in the historical record, determines the longest subscription time of special unit of cargo according to this.Judge that whether arrival time is the reservation action of avoiding unnecessary less than the purpose of long subscription time, in other words, only, just need carry out ensuing machine booking and move when arrival time during less than the longest subscription time.For instance, if production line has website A, website B, reaches these 3 websites of website C, suppose that special unit of cargo is 8 hours in the needed processing time of website B, and it is 2 hours in the needed processing time of website C, since when website B in processing during parcel, website C can handle 4 batches of other unit of cargos, and therefore the board of preengaging website B and website C simultaneously may use the chance of board and then influence production capacity on the contrary just without any meaning because take other unit of cargo.In the middle of another example, suppose that the time that special unit of cargo arrives first website is pm2:50, and special unit of cargo is 3 hours in the processing time of first website, and be 1 hour in the processing time of second website, can handle unit of cargo after a period of time (for example at pm4:50 time) at first website so and preengage the board in second website again.
Next shown in step 140,,, calculate the occupancy of each board with the board state of each board in the arrival time of correspondence and the website for each website.Fig. 2 is the process flow diagram of the computing method of the board occupancy that illustrates according to preferred embodiment of the present invention.Occupancy with the board that calculates second website is an example, in step 210, if judging the state of board is treatment state (there promptly have other unit of cargo handling at present to be central), just shown in step 220, with the arrival time of special unit of cargo, the residue processing time of this board, and the mean value of the production cycle of corresponding this board, calculate the occupancy of this board.Be the occupancy of coming the counter platform with following formula in the present embodiment:
Occupancy=(Arrival_T-Remained_T)/Avg_TC
Wherein, Arrival_T represents arrival time, and Remained_T is the residue processing time, and Avg_TC then is the mean value of the production cycle of board.The residue processing time for example is to calculate it with the mean value in the processing cycle of corresponding this board in the historical record and the difference of present time.
For instance, if in second website, have board X, board Y, and three boards of board Z, and calculated special unit of cargo through above-mentioned steps and will after 3 hours, arrive second website.Wherein, board X handles unit of cargo through 3 hours, and board Y has handled 2 hours, and board Z handled 1 hour.If the mean value in the processing cycle of second website is 4 hours, represent that so need just have unit of cargo after (being 4-3) through 1 hour concerning board X disposes; Board Y then also needs 2 hours, and (being 4-2) could dispose present handled unit of cargo; Board Z will (being 4-1) could leave unused after 3 hours.The production cycle mean value of supposing second website is 4 hours, can calculate board X, board Y by above-mentioned formula so, with board Z corresponding respectively occupancy be 1/2,1/4, and 0.
Fig. 3 is the process flow diagram of the computing method of the board occupancy that illustrated according to another preferred embodiment of the present invention.In the present embodiment, shown in step 310, if board is not being handled any unit of cargo at present, that is to say that the board state is an idle state, so shown in step 320, with the maximal value in processing cycle of the arrival time of special unit of cargo, board, and the mean value of the production cycle of board, the occupancy of counter platform according to this.Be the occupancy of coming the counter platform with following formula in the present embodiment:
Occupancy=(Arrival_T Max_TM)/Avg_TC
Wherein, Arrival_T represents the arrival time of special unit of cargo, and Max_TM is the maximal value in the processing cycle of board, and Avg_TC then is the mean value of the production cycle of board.Be with the maximal value in processing cycle of board reason: when the board state be when leaving unused as the parameter of calculating its occupancy, do not know when to have unit of cargo arrives website and situation about handling by this board under, the maximum processing cycle can be used for representing that next this board will handle the needed time of other unit of cargo.
Please get back to the step 150 of Fig. 1, after calculating the occupancy of each board in each website, carry out the reservation action of board according to occupancy according to board state and arrival time.In the present embodiment, reservation had minimum occupancy and occupancy less than the next purposes of 1 board as the special unit of cargo of processing.In a nearlyer step, the pairing occupancy of board is more little, and behind this board of expression reservation, board is short more standby time that the special unit of cargo of wait arrives of leaving unused.If the occupancy of board is 0, when promptly being illustrated in special unit of cargo and arriving website, this board parcel that just disposes, and then can then handle special unit of cargo, can make board reach best production capacity in view of the above.
In another embodiment, except preengaging the board, more can judge whether according to the board characteristic of board itself to preengage this board according to the occupancy of board.For instance, some special unit of cargo may need to have the board of handling the chemicals ability, therefore has the board of less occupancy except selecting when the reservation board, must judge also whether board possesses the needed ability of the special unit of cargo of processing.
What deserves to be mentioned is that above-mentioned reservation action is that the load port with board is that unit is preengage.That is to say, the board of being preengage will keep specific load port and arrive website to wait for special unit of cargo, and other load port that is not kept in advance as yet still can be used to handle general unit of cargo, and therefore machine booking method of the present invention can't influence the treatment scheme of general unit of cargo.
Then shown in step 160, when special unit of cargo arrives website,, do not wait for that board is idle any time and do not need to spend again just can carry out treatment scheme with the previous board of being preengage.In step 170, processing cycle and production cycle that board is handled special unit of cargo also will be recorded in historical record in the lump, to upgrade historical record at any time at last.
In another embodiment, if any unusual (exception) situation takes place in the flow process of handling unit of cargo, at special unit of cargo still before the no show website, all can change at the machine booking of this website, and cooperate present case to preengage again, will can not cause negative influence in view of the above to the production schedule of special unit of cargo.
In sum, machine booking method of the present invention has following advantage at least:
1. by preengaging the mode of board in advance, when special unit of cargo arrives website, handle swimmingly fast, reduce the production cycle of special unit of cargo in view of the above.
With the load port of board as the reservation unit, improve the board production capacity according to this, will can not cause harmful effect simultaneously to the production status of general unit of cargo.
3. in treatment scheme, can adjust the reservation result, and then it is more flexible to make that the treatment scheme of special unit of cargo becomes according to the present situation of treatment scheme.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the present patent application claim person of defining.
Claims (13)
1. machine booking method, this method comprises the following steps:
Calculate a special unit of cargo in a processing time of each website and the delivery time between the adjacent sites according to a historical record;
According to described processing time and described delivery time, predict that this special unit of cargo arrives an arrival time of each described website;
For each described website,, calculate an occupancy of each described board with a board state of each board in this arrival time of correspondence and this website; And
According to described occupancy preengage described board one of them.
2. machine booking method as claimed in claim 1, wherein, this historical record comprises that each described board handles a processing cycle and a production cycle of unit of cargo at every turn, comprises and calculate the step of this special unit of cargo in this processing time of each described website:
Described processing cycle and described production cycle according to each described board of this website are calculated this processing time.
3. machine booking method as claimed in claim 1, wherein, the step of calculating this delivery time of this special unit of cargo between adjacent sites comprises:
Calculate this delivery time according to a transfer mechanism and a transfer rate.
4. machine booking method as claimed in claim 1, wherein, predict that the step that this special unit of cargo arrives this arrival time of each described website comprises:
For each described website, with this processing time of all websites of being positioned at this website upstream, and the summation of this delivery time between all adjacent sites of this website upstream is as this arrival time.
5. machine booking method as claimed in claim 1 wherein, more comprises after this special unit of cargo of prediction arrives the step of this arrival time of each described website:
Judge that whether this arrival time is less than the longest subscription time.
6. machine booking method as claimed in claim 1, wherein, this historical record comprises that each described board handles a processing cycle and a production cycle of unit of cargo at every turn, and the step of calculating this occupancy of each described board comprises:
Judge that this board state is a treatment state; And
According to this arrival time, a residue processing time, the mean value with described production cycle of this board calculates this occupancy.
7. machine booking method as claimed in claim 6, wherein, the step of calculating this occupancy comprises:
Calculate this occupancy=(Arrival_T-Remained_T)/Avg_TC, wherein, Arrival_T represents this arrival time, and Remained_T represents this residue processing time, and Avg_TC represents the mean value of described production cycle.
8. machine booking method as claimed in claim 6 more comprises:
A described processing cycle and a present Time Calculation with this board should the residue processing times.
9. machine booking method as claimed in claim 1, wherein, this historical record comprises that each described board handles a processing cycle and a production cycle of unit of cargo at every turn, and the step of calculating this occupancy of each described board comprises:
Judge that this board state is an idle state; And
According to the maximal value in described processing cycle of this arrival time, this board, the mean value with described production cycle of this board calculates this occupancy.
10. machine booking method as claimed in claim 9, wherein, the step of calculating this occupancy comprises:
Calculate this occupancy=(Arrival_T Max_TM)/Avg_TC, wherein, Arrival_T represents this arrival time, and Max_TM represents the maximal value in described processing cycle, and Avg_TC represents the mean value of described production cycle.
11. machine booking method as claimed in claim 1 wherein, is preengage one of them step of described board according to described occupancy and is comprised:
Reservation has this minimum occupancy and this occupancy less than this board of 1.
12. machine booking method as claimed in claim 1 wherein, is preengage one of them step of described board according to described occupancy and is more comprised:
According to a board characteristic of each described board, preengage described board one of them.
13. machine booking method as claimed in claim 1 wherein, more comprises after one of them step of the described board of reservation:
When this special unit of cargo arrives this website, handle this special unit of cargo with this board of reservation; And
This board of reservation is handled a processing cycle and one of this special unit of cargo and produced periodic recording in this historical record.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101050489A CN101311860A (en) | 2007-05-22 | 2007-05-22 | Machine booking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101050489A CN101311860A (en) | 2007-05-22 | 2007-05-22 | Machine booking method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101311860A true CN101311860A (en) | 2008-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101050489A Pending CN101311860A (en) | 2007-05-22 | 2007-05-22 | Machine booking method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106200574A (en) * | 2016-07-01 | 2016-12-07 | 武汉华星光电技术有限公司 | One sends method and system automatically with charge free |
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2007
- 2007-05-22 CN CNA2007101050489A patent/CN101311860A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106200574A (en) * | 2016-07-01 | 2016-12-07 | 武汉华星光电技术有限公司 | One sends method and system automatically with charge free |
| CN106200574B (en) * | 2016-07-01 | 2019-02-22 | 武汉华星光电技术有限公司 | It is a kind of to send method and system with charge free automatically |
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Open date: 20081126 |