CN114988036A - Workshop semi-finished product transportation method based on Internet of things - Google Patents
Workshop semi-finished product transportation method based on Internet of things Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 81
- 239000011265 semifinished product Substances 0.000 title claims abstract description 65
- 238000012545 processing Methods 0.000 claims abstract description 57
- 238000004519 manufacturing process Methods 0.000 claims abstract description 41
- 238000003860 storage Methods 0.000 claims description 16
- 238000012546 transfer Methods 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 3
- 230000032258 transport Effects 0.000 description 56
- 239000000047 product Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000011521 glass Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004506 ultrasonic cleaning Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G35/00—Mechanical conveyors not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
- B65G1/02—Storage devices
- B65G1/04—Storage devices mechanical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
- B65G1/02—Storage devices
- B65G1/04—Storage devices mechanical
- B65G1/137—Storage devices mechanical with arrangements or automatic control means for selecting which articles are to be removed
- B65G1/1373—Storage devices mechanical with arrangements or automatic control means for selecting which articles are to be removed for fulfilling orders in warehouses
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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 application discloses workshop semi-finished product transportation method based on the Internet of things, relates to the technical field of semi-finished product transportation, and comprises the following steps: arranging a feeding point location, a blanking point location and a trolley transporting waiting point location at a preset position close to each processing device in a workshop; importing the position information of the feeding point location, the blanking point location and the transport trolley waiting point location and production process flow data to a data processing center; acquiring the running time of each processing device for multiple times through a data acquisition center to generate the average running time of the corresponding processing device; and controlling the semi-finished product transportation path scheme with the shortest execution time of the transportation trolley based on a plurality of task instructions sent by the data processing center at the same time. The semi-finished product transportation method can effectively reduce labor cost, reduce labor intensity, improve working efficiency and reduce loss rate caused by manual transportation by optimizing productivity and improving resource utilization rate based on big data of the Internet of things.
Description
Technical Field
The invention relates to the technical field of semi-finished product transportation, in particular to a workshop semi-finished product transportation method based on the Internet of things.
Background
For manufacturing enterprises, raw materials or blanks need to be processed for a long time through different steps or procedures, and high-quality products can be obtained finally. At present, in the aspect of production, the automation of production has basically been realized, but, the informatization and the automation level that semi-manufactured goods were transported in the workshop are generally not high, mostly adopt artifical mode of transporting, have shortcomings such as cost of labor height, intensity of labour is big, work efficiency is low and the loss rate height, are more and more difficult to satisfy the demand that promotes enterprise's core competitiveness at present.
Disclosure of Invention
One advantage of the invention is that the workshop semi-finished product transportation method based on the internet of things is provided, when a plurality of task instructions are provided at the same time, the semi-finished product transportation path scheme with the shortest execution time of the transportation trolley can be automatically controlled, so that the aim of transporting semi-finished products in a workshop in the shortest time is fulfilled, the automation level is high, the labor cost can be effectively reduced by optimizing the capacity and improving the resource utilization rate based on the big data of the internet of things, the labor intensity of workers is reduced, the working efficiency is improved, and the loss rate caused by manual transportation is reduced.
One advantage of the present invention is to provide a workshop semi-finished product transportation method based on the internet of things, wherein based on the difference of semi-finished products and the difference of processing devices, the standby time and the production time of each processing device are updated in real time during the production process, the average operation time of the processing devices can be updated online, and thus the semi-finished product transportation path scheme with the shortest execution time of the transportation trolley can be controlled, and the efficient transportation efficiency is ensured.
One advantage of the present invention is to provide a workshop semi-finished product transportation method based on the internet of things, wherein a pre-fabricated instruction can be formed through the issue of a subtask instruction and the adjustable design of the subtask instruction, thereby effectively improving the processing efficiency of a data processing center and the control accuracy of the data processing center.
In order to achieve at least one of the advantages, the invention provides a workshop semi-finished product transportation method based on the Internet of things, which comprises the following steps:
arranging a feeding point location, a blanking point location and a trolley waiting point location at a preset position close to each processing device in a workshop;
importing the position information of the feeding point location, the blanking point location and the transport trolley waiting point location and production process flow data to a data processing center;
acquiring the running time of each processing device for multiple times through a data acquisition center to generate the average running time of the corresponding processing device;
controlling a semi-finished product transportation path scheme with the shortest execution time of the transportation trolley based on a plurality of task instructions sent by the data processing center at the same time, wherein the shortest time consumed by the semi-finished product transportation path scheme is as follows:
wherein x is 1m 、x 2m 、x km Respectively the time consumed by the transport trolley to move from the current position to the mth equipment in the 1 st procedure, the mth equipment in the 2 nd procedure and the mth equipment in the kth procedure;
x 1，m 、x 2，m 、x k，m respectively waiting time of the transport trolley at the mth equipment in the 1 st procedure, the mth equipment in the 2 nd procedure and the mth equipment in the kth procedure;
x 2，n 、x 3，n 、x k+1，n respectively waiting time of the transport trolley at the nth equipment in the 2 nd procedure, the nth equipment in the 3 rd procedure and the nth equipment in the k +1 th procedure;
x 1m，2n 、x 2m，3n 、x km，(k+1)n respectively the time consumed by the transportation trolley to transport from the mth equipment in the 1 st procedure to the nth equipment in the 2 nd procedure, transport from the mth equipment in the 2 nd procedure to the nth equipment in the 3 rd procedure and transport from the mth equipment in the kth procedure to the nth equipment in the k +1 th procedure;
wherein each semi-finished product transportation path scheme corresponds to each task command, the running speed of the transportation trolley is the same, and the movement path of the transportation trolley between each two processing devices is preset.
According to an embodiment of the present invention, the operation time of each processing device is a sum of a standby time and a production time, wherein the standby time is a time from when the device is turned on to when a preset production condition is met, and the production time is a time from when the device starts production operation to when the production is met.
According to an embodiment of the invention, based on the difference of semi-finished parts and the difference of processing equipment, the standby time and the production time of each processing equipment are updated in real time in the production process, and are transmitted to the data processing center through the data acquisition center, and the standby time and the production time are set to zero through a PLC program arranged in the processing equipment after the processing of each batch of semi-finished parts is completed.
According to an embodiment of the present invention, the data processing center may further include a subtask instruction when each task instruction is issued, where the subtask instruction is a next step instruction issued based on the predicted completion time corresponding to the task instruction, and the subtask instruction is an adjustable instruction, so that when the predicted completion time of the task instruction and the actual completion time deviate, the subtask instruction can be redistributed based on the shortest time consumed by the semi-finished product transportation path scheme.
According to an embodiment of the invention, the minimum time consumed by the semi-finished product transportation path plan when all the transportation carts are executing the task order further comprises an estimated remaining time for each transportation cart to complete the task order.
According to an embodiment of the invention, the waiting position of the transport trolley is suitable for accommodating one transport trolley, the transport trolley is provided with a positioning sensor, and the loading position, the unloading position and the waiting position of the transport trolley are respectively provided with a loading position sensor, an unloading position sensor and a waiting position sensor which are matched with the positioning sensor.
According to an embodiment of the invention, each processing device is provided with a limiting device at the feeding point position and the discharging point position, and the limiting devices are provided with storage trays suitable for being transported by the transport trolley.
According to an embodiment of the invention, the limiting device is implemented as a limiting frame or a limiting seat and comprises a base and a side enclosing plate, wherein a transfer groove suitable for accommodating a conveying arm of the transport trolley is formed in the position, close to the middle, of the top of the base, the side enclosing plate extends upwards from the top of the base integrally and is matched with the base to form a storage space suitable for placing the storage disc, one end of the transfer groove is closed by the side enclosing plate, and the other end of the transfer groove is arranged in an open manner.
These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description.
Drawings
Fig. 1 shows a flow diagram of the workshop semi-finished product transportation method based on the internet of things.
Fig. 2 shows a schematic structural diagram of the limiting device in the present application.
Reference numerals: 10-a limiting device, 11-a base, 12-a side coaming, 101-a transfer groove and 102-a storage space.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the disclosure of the specification, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships that are based on those shown in the drawings, which are merely for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and, therefore, the terms should not be construed as limiting the invention.
It is understood that the terms "a" and "an" should be interpreted as meaning "at least one" or "one or more," i.e., that a quantity of one element may be one in one embodiment, while a quantity of another element may be plural in other embodiments, and the terms "a" and "an" should not be interpreted as limiting the quantity.
In the process of processing or processing raw materials or blanks to form finished products in a workshop, a manufacturing enterprise may need to perform a plurality of processes, and each process may be provided with a plurality of different types of processing devices to respectively implement respective processing functions. Under the general condition, each processing equipment can both realize automatic operation, and realize automatic feeding and automatic discharge through from taking or supplementary complex manipulator, in addition, in semi-manufactured goods's transportation operation, because the complicacy of workshop operating mode or environment, the mode that adopts artifical transportation under the general condition goes on, make the cost of labor of enterprise high, workman intensity of labour is great, but semi-manufactured goods's transfer efficiency is lower, the relative automation of artifical transportation simultaneously transports and still brings extra damage for the product easily, increase the loss rate. In addition, some enterprises adopt the AGV dolly to carry out the transportation of semi-manufactured goods, generally set up predetermined track under the prerequisite that has better operating mode between two processing equipment, supply the AGV dolly to walk, and the AGV dolly can only realize the directional transportation between these two equipment, outside the transit time, or when need not transporting, the AGV dolly keeps at standby state, and resource vacancy rate is great. How to realize that the travelling bogie carries out effective transportation in the workshop is one of the purpose of this application, wherein effective transportation is including not only transporting between two processing equipment, can also all can transport between all processing equipment, in addition, effective transportation still includes when a plurality of equipment all have the transportation demand, and the travelling bogie can be controlled to go the half-finished product transportation route scheme that the execution time is the shortest, and so, after the travelling bogie is accomplishing present transportation task, can go to new transportation work by the faster input, and then reaches the purpose of optimizing the productivity, improving resource utilization.
Referring to fig. 1 and 2, a transportation method of semi-finished products in a workshop based on internet of things according to a preferred embodiment of the invention will be described in detail below, wherein the transportation method of semi-finished products in a workshop based on internet of things mainly comprises the following steps:
s101, arranging a feeding point location, a blanking point location and a trolley waiting point location at a preset position close to each processing device in a workshop;
s102, importing the position information of the feeding point location, the blanking point location and the waiting point location of the transport trolley and production process flow data to a data processing center, wherein generally, the process flow of each product from a blank to a finished product is fixed or changed after one update upgrade or other forms of improvement, but once the process flow is determined, the production process flow is determined, and the corresponding production process flow data can be imported to the data processing center based on the type of the product to be processed;
s103, acquiring the running time of each processing device for multiple times through a data acquisition center to generate the average running time of the corresponding processing device, wherein the running time of each processing device is the sum of standby time and production time, the standby time is the time from the start of the device to the meeting of a preset production condition, the production time is the time from the beginning of the production operation of the device to the meeting of the production, specifically, the data processing center continuously accumulates the production time of each batch of materials, then calculates the average value of the production time, the calculated average value is the reference value of the next completion time, and the difference between the reference value and the actual value to be completed next time is not large; i.e. average running time of the device
Wherein i represents a batch of material;
s104, controlling a semi-finished product transportation path scheme with the shortest execution time of the transportation trolley based on a plurality of task instructions sent by the data processing center at the same time, wherein the shortest time consumed by the semi-finished product transportation path scheme is as follows:
wherein x is 1m 、x 2m 、x km Respectively the time consumed by the transport trolley to move from the current position to the mth equipment in the 1 st procedure, the mth equipment in the 2 nd procedure and the mth equipment in the kth procedure;
x 1，m 、x 2，m 、x k，m respectively waiting time of the transport trolley at the mth equipment in the 1 st procedure, the mth equipment in the 2 nd procedure and the mth equipment in the kth procedure;
x 2，n 、x 3，n 、x k+1，n respectively waiting time of the transport trolley at the nth equipment in the 2 nd procedure, the nth equipment in the 3 rd procedure and the nth equipment in the k +1 th procedure;
x 1m，2n 、x 2m，3n 、x km，(k+1)n respectively the time consumed by the transport trolley for transporting from the mth equipment in the 1 st procedure to the nth equipment in the 2 nd procedure, the transport trolley for transporting from the mth equipment in the 2 nd procedure to the nth equipment in the 3 rd procedure and the transport trolley for transporting from the mth equipment in the kth procedure to the nth equipment in the kth +1 st procedure;
wherein each semi-finished product transportation path scheme corresponds to each task instruction, and the running speed of the transportation trolley is the same, and the movement path of the transportation trolley between each two processing devices is preset.
It is worth mentioning that each semi-finished product transportation path solution corresponds to each task instruction, that is to say: in the continuous processing process of the whole workshop, different devices in different procedures may have the requirement of transferring the semi-finished product, when the data processing center simultaneously sends a plurality of task instructions, it means that at least two devices have the requirement of transferring the semi-finished product, namely the requirement on the transport trolley, the positions of at least two devices are different, and the destinations of the at least two devices needing to be transferred after the processing is finished may also be different, so that a plurality of semi-finished product transport path schemes are formed, and the time consumed by each semi-finished product transport path scheme may also be different, which may cause the problem of the size of the resource utilization rate, based on the technical problem, the application sets fixed feeding point position, blanking point position and transport trolley waiting point position near each device, and introduces the position information and the production process flow data corresponding to the product to be processed into the data processing center, based on the production process flow data, no matter which equipment of which process is used for transferring the semi-finished product, the transport trolley can move to the next processing equipment through a preset path, and meanwhile, based on the acquired average running time of each processing equipment, and based on the scheme of the semi-finished product transport path with the shortest time consumption determined by the calculation method provided by the application, the transport trolley can complete the task of transferring the semi-finished product through the scheme of the semi-finished product transport path with the shortest time when executing each task, so that the transport trolley is kept in the state of the highest utilization rate constantly, the transfer efficiency of the semi-finished product in a workshop is greatly improved, namely, the working efficiency is improved, meanwhile, the automatic transfer is relatively manual transfer, the manual labor intensity can be effectively reduced, the labor cost is saved, and the loss rate of the semi-finished product is reduced.
For example, at present, with respect to the same transport trolley a, the data processing center issues two task instructions at the same time, the first is a task instruction that CNC processing of a first batch of glass cover plates is to be completed and glass cover plates need to be transferred, and the second is a task instruction that ultrasonic cleaning equipment is to be cleaned and completed and needs to be transferred to grinding and polishing equipment;
suppose that: production time t for CNC (computer numerical control) processing of first batch of glass cover plates 11 30min, the time for loading or other work in processing is the standby time t 12 Get the equipment running time T after 5min 1 35min, average operating time T of the apparatus 1 35 min; the predicted CNC processing time Ty of the next batch of glass cover plates is 35 min;
when the data processing center monitors 7min of the predicted residual machining completion time of the CNC, a task instruction is sent to the transport trolley A in the trolley placing area, and the time required for the transport trolley A to reach the 1 st equipment in the 3 rd procedure from the trolley placing area is x 3 ＝L 1 /v＝160/40＝4min；
The waiting time of the transport trolley A at the transport trolley waiting position of the 1 st equipment in the 3 rd procedure is as follows:
x 3，1 ＝7-x 3 ＝3min；
the time consumed for transporting the transport cart A from the 1 st equipment in the 3 rd procedure to the 1 st equipment in the 4 th procedure is x 31,41 ＝5min；
Step 4, the predicted residual processing completion time of the 1 st equipment is 5 min;
the waiting time of the transport trolley A at the transport trolley waiting position of the 1 st equipment in the 4 th procedure is as follows:
x 4，1 ＝5-x 31,41 ＝0min；
calculating a time consumption of a semi-finished product transportation path plan for the first task instruction as
X 3 ＝x 3 +x 3，1 +x 31,41 +x 4，1 ＝12min；
Similarly, when the data processing center monitors the predicted residual processing completion time of 7min of the ultrasonic cleaning equipment, the time x required for the transport trolley A to reach the 3 rd equipment in the 3 rd procedure 3 ’＝L 1 /v＝160/40＝4min；
The waiting time of the transport trolley A at the transport trolley waiting position of the 3 rd equipment in the 4 th procedure is as follows:
x 3，3 ＝7-x 3 ’＝3min；
the time consumed for transporting the transport cart A from the 3 rd equipment of the 3 rd procedure to the 2 nd equipment of the 4 th procedure is x 33,42 ＝5min；
Step 5 the 1 st apparatus predicted residual processing completion time was 6min
The waiting time of the transport trolley A at the transport trolley waiting position of the 1 st equipment in the 5 th procedure is as follows:
x 4，2 ＝6-x 33,42 ＝1min；
calculating a consumption time of the semi-finished product transportation path plan for the second task instruction as
X 3 ’＝x 3 ’+x 3，3 +x 33,42 +x 4，2 ＝13min
At this time, take X 3 ，X 3 And controlling the transport trolley A to execute a semi-finished product transportation path scheme corresponding to the first task instruction as an optimal transportation scheme of the transport trolley A within a minimum value of 12 min.
As a preferred embodiment, based on the difference of the semi-finished products and the difference of the processing equipment, the standby time and the production time of each processing equipment are updated in real time in the production process, and are transmitted to the data processing center through the data acquisition center, and the standby time and the production time are set to zero through a PLC program built in the processing equipment after the processing of each batch of semi-finished products is completed, so that the effectiveness of the semi-finished product transportation path scheme which consumes the shortest time can be maintained.
Further preferably, the data processing center further attaches a secondary task instruction when issuing each task instruction, where the secondary task instruction is a next step instruction issued based on a predicted completion time corresponding to the task instruction, and the secondary task instruction is an adjustable instruction, where the adjustable instruction refers to: when the predicted completion time and the actual completion time of the task instruction deviate, for example, the predicted completion time is 15min, and the actual completion time may need 20min, in this case, there is a problem that the transportation vehicle is empty, so that the resource utilization rate is reduced, and at this time, the task is reallocated to another transportation vehicle based on the shortest time consumed by the semi-finished product transportation path scheme, which is equivalent to the task reallocation. In this way, when the predicted completion time is the same as the actual completion time or there is only a very small deviation, for example, a deviation of 10 seconds or 25 seconds, the transportation trolley directly executes the corresponding sub-task instruction after the task instruction is executed, so that the data processing center can form a prefabricated instruction, can plan the future work in advance, and still does not affect the transportation work of the transportation trolley when a problem or a fault occurs in a short time, thereby effectively improving or ensuring the efficiency of the data processing center processing work and the control accuracy of the data processing center. In addition, when the predicted completion time and the actual completion time have large deviation, the pre-fabricated instructions can be subjected to remedial measures by redistributing the subtask instructions, so that the maximum utilization of the transport trolley is ensured, and the efficiency of transferring the semi-finished products is ensured.
Further preferably, when all the transport carriages are executing a task order, the minimum time consumed by the semi-finished product transport path plan further includes an estimated remaining time for each transport carriage to complete the task order.
Further preferably, the trolley waiting position is adapted to accommodate one trolley. The utility model discloses a travelling bogie, including travelling bogie, material loading position, unloading position, position sensor, material loading position, unloading position sensor and waiting position sensor, travelling bogie installs positioning sensor, simultaneously, the material loading position the unloading position with travelling bogie waits the position be provided with respectively with positioning sensor matched with material loading position sensor, unloading position sensor and waiting position sensor to ensure that the travelling bogie can be accurate open stop and target in place.
Further preferably, each processing device is arranged at the feeding point position and the discharging point position, so that the accuracy of the starting and stopping positions of the transport trolley is further ensured, and meanwhile, a storage tray suitable for being transported by the transport trolley is placed on the limiting device and used for storing semi-finished products to be transported.
It is further preferred that the limiting device 10 is implemented as a limiting frame or a limiting seat, and includes a base 11 and a side wall 12, wherein a transfer slot 101 adapted to accommodate a conveying arm of the transportation trolley is formed at a position near the middle of the top of the base 10, and the side wall 12 extends upward from the top of the base 10 integrally and cooperates with the base 10 to form a storage space 102 adapted to accommodate the storage tray, and at the same time, the left end of the transfer slot 101 is closed by the side wall 12, and the opposite right end is open. Thus, when the semi-finished products in the storage trays of the storage space 102 are accumulated to a certain amount or volume and need to be transported, the transport trolley extends the conveying arm into the transport chute 101, and then the storage trays are lifted upwards together, so that the semi-finished products can be transported to the next station along with the storage trays, and the storage trays are placed in the storage space 102 of the next station.
It should be noted that, as the prior art, the transport vehicle may be an AGV vehicle, and the data collection center and the data processing center are also prior art, and there is no improvement on the related computer program.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.
Claims (8)
1. The workshop semi-finished product transportation method based on the Internet of things is characterized by comprising the following steps:
arranging a feeding point location, a blanking point location and a trolley waiting point location at a preset position close to each processing device in a workshop;
importing the position information of the feeding point location, the blanking point location and the transport trolley waiting point location and production process flow data to a data processing center;
acquiring the running time of each processing device for multiple times through a data acquisition center to generate the average running time of the corresponding processing device;
controlling a semi-finished product transportation path scheme with the shortest execution time of the transportation trolley based on a plurality of task instructions sent by the data processing center at the same time, wherein the shortest time consumed by the semi-finished product transportation path scheme is as follows:
wherein x is 1m 、x 2m 、x km Respectively the time consumed by the transport trolley to move from the current position to the mth equipment in the 1 st procedure, the mth equipment in the 2 nd procedure and the mth equipment in the kth procedure;
x 1，m 、x 2，m 、x k，m respectively the m-th equipment of the transport trolley in the step 1,The waiting time of the mth equipment in the step 2 and the mth equipment in the step k;
x 2，n 、x 3，n 、x k+1，n respectively waiting time of the transport trolley at the nth equipment in the 2 nd procedure, the nth equipment in the 3 rd procedure and the nth equipment in the k +1 th procedure;
x 1m，2n 、x 2m，3n 、x km，(k+1)n respectively the time consumed by the transportation trolley to transport from the mth equipment in the 1 st procedure to the nth equipment in the 2 nd procedure, transport from the mth equipment in the 2 nd procedure to the nth equipment in the 3 rd procedure and transport from the mth equipment in the kth procedure to the nth equipment in the k +1 th procedure;
wherein each semi-finished product transportation path scheme corresponds to each task command, the running speed of the transportation trolley is the same, and the movement path of the transportation trolley between each two processing devices is preset.
2. The Internet of things-based workshop semi-finished product transportation method according to claim 1, wherein the operation time of each processing device is the sum of standby time and production time, wherein the standby time is the time from the start of the device to the meeting of preset production conditions, and the production time is the time from the beginning of production operation of the device to the meeting of production.
3. The method for transporting semi-finished products in the workshop based on the internet of things as claimed in claim 2, wherein the standby time and the production time of each processing device are updated in real time during the production process based on the difference of the semi-finished products and the difference of the processing devices, and are transmitted to the data processing center through the data acquisition center, and the standby time and the production time are set to zero through a PLC program built in the processing device after the processing of each batch of semi-finished products is completed.
4. The Internet of things-based workshop semi-finished product transportation method according to claim 3, wherein each task instruction is issued by the data processing center and is accompanied by a subtask instruction, wherein the subtask instruction is a next step instruction issued based on the predicted completion time corresponding to the task instruction, and the subtask instruction is an adjustable instruction so that when the predicted completion time and the actual completion time of the task instruction deviate, the subtask instruction can be redistributed based on the shortest time consumed by the semi-finished product transportation path scheme.
5. The Internet of things-based semi-finished product transportation method for a workshop according to claim 4, wherein when all the transportation vehicles are executing the task command, the shortest time consumed by the semi-finished product transportation path scheme further comprises the predicted remaining time for each transportation vehicle to complete the task command.
6. The Internet of things-based workshop semi-finished product transportation method according to claim 1, wherein the transport trolley waiting point is suitable for accommodating a transport trolley, the transport trolley is provided with a positioning sensor, and the loading point, the unloading point and the transport trolley waiting point are respectively provided with a loading level sensor, an unloading level sensor and a waiting level sensor which are matched with the positioning sensor.
7. The Internet of things-based workshop semi-finished product transportation method according to claim 6, wherein each processing device is provided with a limiting device at the feeding point position and the discharging point position, and a storage tray suitable for being transported by the transport trolley is placed on the limiting device.
8. The Internet of things-based workshop semi-finished product transportation method is characterized in that the limiting device is implemented as a limiting frame or a limiting seat and comprises a base and side enclosing plates, wherein a transfer groove suitable for containing a conveying arm of the transport trolley is formed in the position, close to the middle, of the top of the base, the side enclosing plates integrally extend upwards from the top of the base and are matched with the base to form a storage space suitable for placing the storage disc, one end of the transfer groove is closed by the side enclosing plates, and the other end of the transfer groove is in an open type arrangement.
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