CN109178820B - Short-distance redundant data transmission method and transmission device - Google Patents
Short-distance redundant data transmission method and transmission device Download PDFInfo
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- CN109178820B CN109178820B CN201811093944.2A CN201811093944A CN109178820B CN 109178820 B CN109178820 B CN 109178820B CN 201811093944 A CN201811093944 A CN 201811093944A CN 109178820 B CN109178820 B CN 109178820B
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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
- B65G37/00—Combinations of mechanical conveyors of the same kind, or of different kinds, of interest apart from their application in particular machines or use in particular manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
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- Mechanical Engineering (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Abstract
The invention discloses a short-distance redundant data transmission device, which is arranged on a vehicle body conveying line of a coating workshop, wherein the vehicle body conveying line comprises a plurality of conveying roller beds which are sequentially arranged, the vehicle body conveying line conveys a vehicle body to a paint spraying station, the area close to the paint spraying station is a paint spraying environment area, the area far away from the paint spraying station is a common environment area, and the short-distance redundant data transmission device comprises: the device comprises a main read-write station, an auxiliary read-write station, a vehicle body information storage device and a vehicle body information confirmation device. The auxiliary read-write station reads the backup vehicle body information in the common environment area and transmits the backup vehicle body information along with the vehicle body, and the main read-write station reads the vehicle body information in the paint spraying environment area. The backup body information forms redundancy. The invention also provides a short-distance redundant data transmission method.
Description
Technical Field
The present invention relates to a transmission technique of redundant data on a transmission line, and more particularly, to a technique for reducing a failure rate of information acquisition on a transmission line by transmitting redundant data.
Background
The automobile manufacturing adopts a production line process, various stations are sequentially arranged on the production line, and parts of the automobile sequentially pass through the stations to finally complete the production of the whole automobile. Since the products on the production line are determined according to the order sequence, and the order sequence is random, the vehicle body information needs to be identified at some selective stations, such as painting, decoration and the like, and the paint or the decoration with the corresponding color is selected according to the identified vehicle body information.
In a paint shop, for example, a vehicle body conveyor line in the paint shop, a body-in-white is painted. Because the paint spraying colors of the vehicle bodies are different, before the paint spraying process is carried out, the vehicle body information is firstly identified, the color needing paint spraying is determined according to the vehicle body information, and then the paint spraying process is carried out. Fig. 1 discloses a schematic construction of a body conveyor line of a paint shop. Referring to fig. 1, a vehicle body transfer line for a paint shop includes a plurality of transfer rollers 102 arranged in sequence. The vehicle bodies are transported in succession on several transport rollers 102. The vehicle body transport line transports the vehicle bodies to the painting station 104. In one embodiment, the painting station 104 is a robotic paint booth. The painting station 104 is not a completely enclosed space where paint particles and other volatiles may be dispersed into the surrounding environment during the painting process, thereby affecting the surrounding environment. From the perspective of the working environment, the area close to the painting station can be defined as a painting environment area, and the area far away from the painting station is a common environment area. The parts in the painting environment area are susceptible to the painting station, while the parts in the general environment area are substantially unaffected by the painting station.
Currently, in a painting shop, a device identification technology such as MOBY-I or RFID of siemens is generally used as a vehicle body information identification tool. Specifically, the body is placed on skis, each of which mounts a MOBY-I or RFID data storage carrier. The sled carries the vehicle body from the conveyor roller to the front of the painting station 104. At this time, relevant vehicle body information of the vehicle body, such as color, vehicle type and the like, needs to be read for the spraying robot at the spraying station to perform subsequent spraying. Therefore, whether the read-write station located in front of the spraying station works normally or not is very important, and whether the spraying robot can produce normally or not is directly influenced.
Returning to the embodiment shown in fig. 1, the vehicle body transfer line includes 7 transfer rollers 102 arranged in series. In order to show the paint environment area and the general environment area in the figure, the 7 transfer rollers 102 are divided into two upper and lower rows, the upper transfer rollers 1#, 2#, 3# and 4# are located in the general environment area, and the lower transfer rollers 5#, 6# and 7# are located in the paint environment area. It should be noted here that the 7 conveying rollers 102 are divided into two rows, one being at the top and the other being separated by a dotted line, for convenience of description, and the distribution of the conveying rollers in the painting environment area and the general environment area is more clearly shown, and the arrangement of the conveying rollers in actual use is not shown. In practical application, the arrangement mode of the conveying roller machines is arranged according to the station arrangement of the production line. The vehicle bodies are conveyed in the order from the conveying roller 1# to 7#, and the conveying roller 7# is a conveying roller next to the painting station 104.
In the prior art, a read-write station 106 is arranged on the conveying roller machine 7#, when the sled loaded with the vehicle body abuts on the conveying roller machine 7#, the read-write station 106 reads the MOBY-I or RFID data storage carrier on the sled, thereby acquiring the vehicle body information. The vehicle body information includes: sled number, vehicle type code, color, body ID, auxiliary markings, etc. After the read-write station 106 successfully reads the vehicle body information, the vehicle body is allowed to enter a painting station 104, such as a robot painting room, and then the painting robot calls a corresponding vehicle model track code and color according to the vehicle body information to perform painting.
The painting environment area is a high-temperature and high-humidity environment, and more paint particles exist. The failure rate of the read-write station 106 is high in an environment of high temperature, high humidity and high particulate matter. The statistical data shows that there are three main reasons for reading failure when the read-write station 106 reads the car body information: the problems of the use environment cause the faults of the read-write station, the service life of the MOBY-I or RFID data storage carrier is expired, and the positioning of the sledge is not accurate.
If the usage environment is classified, the statistical result of the classification is as follows:
in a common environment, the failure rate caused by environmental problems, service life problems and positioning problems is about 1%, and the total failure rate is about 3%.
In the paint spraying environment, the failure rate of environmental problems is increased to 13%, the failure rate caused by service life problems and positioning problems is still about 1%, and the total failure rate is about 15%.
It can be seen that the high temperature and high humidity of the painting environment has a significant effect on the failure rate of the read-write station. When the read-write station can not read the information of the vehicle body normally, the working process is affected. When the information of the vehicle body is not successfully read, the vehicle body cannot be allowed to enter a robot paint spraying chamber, and the whole process flow must be stopped at the moment to wait for manual treatment. The manual processing mode is that an operator checks FIS paper bar code data on the vehicle body, obtains vehicle body information through the FIS paper bar code data, and then manually inputs the vehicle body information. After the body information is entered, the robot paint booth allows the body to enter. The process flow needs to take longer time for pausing, alarming, manual checking and manual inputting, and the process progress of the whole assembly line can be influenced. In addition, the high temperature and humidity and high particulate matter in the painting environment are also not good for human health, and the operator should avoid working for a long time in the painting environment as much as possible.
Disclosure of Invention
The invention aims to provide a redundant data transmission technology on a transmission line.
According to an embodiment of the present invention, a short-distance redundant data transmission device is provided, which is installed on a vehicle body conveying line of a painting workshop, wherein the vehicle body conveying line includes a plurality of conveying rollers arranged in sequence, the vehicle body conveying line conveys a vehicle body to a painting station, an area close to the painting station is a painting environment area, and an area far away from the painting station is a general environment area, and the short-distance redundant data transmission device includes: the device comprises a main read-write station, an auxiliary read-write station, a vehicle body information storage device and a vehicle body information confirmation device.
The main reading and writing station is arranged on the conveying rolling bed close to the paint spraying station, when the automobile body is conveyed to the conveying rolling bed close to the paint spraying station, the main reading and writing station reads the information of the automobile body, and the main reading and writing station is located in a paint spraying environment area. The auxiliary read-write station is arranged on a conveying rolling bed in a common environment area, and when the vehicle body is conveyed to the conveying rolling bed, the auxiliary read-write station reads the vehicle body information. The vehicle body information storage device is communicated with the main read-write station, the auxiliary read-write station and the vehicle body conveying line, the auxiliary read-write station reads vehicle body information of a vehicle body and stores the vehicle body information into the vehicle body information storage device, the vehicle body is conveyed on the vehicle body conveying line, the storage position of the vehicle body information in the vehicle body information storage device is correspondingly changed, the vehicle body is conveyed to the conveying roller bed adjacent to the paint spraying station, and the vehicle body information is correspondingly moved to the position to be output in the vehicle body information storage device. The vehicle body information confirmation device is communicated with the main read-write station and the vehicle body information storage device, when the vehicle body is conveyed to the conveying rolling bed next to the painting station, the main read-write station reads the vehicle body information of the vehicle body, if the main read-write station successfully reads the vehicle body information of the vehicle body, the vehicle body information confirmation device obtains the vehicle body information of the vehicle body from the main read-write station, and if the main read-write station fails to read the vehicle body information of the vehicle body, the vehicle body information confirmation device obtains the vehicle body information of the vehicle body from the position to be output of the vehicle body information storage device.
In one embodiment, the vehicle body information storage device includes a plurality of storage units corresponding to the conveying rollers on the vehicle body conveying line.
In one embodiment, a plurality of storage units in the vehicle body information storage device correspond to a plurality of conveying rollers between a conveying roller for installing the auxiliary read-write station and a conveying roller for installing the main read-write station one by one.
In one embodiment, the vehicle body information storage device adjusts the storage position of the vehicle body information according to a handshake signal when the vehicle body is conveyed between the conveying rollers, and when the vehicle body is conveyed from a previous conveying roller to a next conveying roller, the vehicle body information is moved from the previous storage unit to the next storage unit and the previous storage unit is emptied.
According to an embodiment of the invention, a short-distance redundant data transmission method is provided, which is applied to a vehicle body conveying line of a coating workshop, wherein the vehicle body conveying line comprises a plurality of conveying roller beds which are arranged in sequence, the vehicle body conveying line conveys a vehicle body to a painting station, an area close to the painting station is a painting environment area, and an area far away from the painting station is a common environment area, and the short-distance redundant data transmission method comprises the following steps:
installing a main reading station on a conveying rolling bed close to a paint spraying station, wherein the main reading station is positioned in a paint spraying environment area;
installing an auxiliary reading station on a conveying roller bed in a common environment area;
conveying the vehicle body to a conveying roller bed provided with an auxiliary reading station;
the auxiliary read-write station reads the body information of the body and stores the body information into a body information storage device;
the vehicle body is conveyed on a vehicle body conveying line, and the storage position of the vehicle body information in the vehicle body information storage device is correspondingly changed;
the vehicle body is conveyed to a conveying roller bed adjacent to a paint spraying station, and the vehicle body information is correspondingly moved to a position to be output in a vehicle body information storage device;
when the vehicle body is conveyed to the conveying roller bed next to the paint spraying station, the main reading and writing station reads the vehicle body information of the vehicle body;
if the main read-write station successfully reads the vehicle body information of the vehicle body, the vehicle body information confirmation device acquires the vehicle body information of the vehicle body from the main read-write station;
if the main read-write station fails to read the vehicle body information of the vehicle body, the vehicle body information confirming device obtains the vehicle body information of the vehicle body from the position to be output of the vehicle body information storage device.
In one embodiment, the vehicle body information storage device includes a plurality of storage units corresponding to the conveying rollers on the vehicle body conveying line.
In one embodiment, a plurality of storage units in the vehicle body information storage device correspond to a plurality of conveying rollers between a conveying roller for installing the auxiliary read-write station and a conveying roller for installing the main read-write station one by one.
In one embodiment, the short-range redundant data transmission method further includes:
and adjusting the storage position of the vehicle body information in the vehicle body information storage device according to a handshake signal when the vehicle bodies are conveyed between the conveying rolling machines, and when the vehicle bodies are conveyed from the last conveying rolling machine to the next conveying rolling machine, moving the vehicle body information from the previous storage unit to the next storage unit and emptying the previous storage unit.
The short-distance redundant data transmission device and the short-distance redundant data transmission method firstly read the vehicle body information once in a common environment area, transmit the vehicle body information as redundant data along with the vehicle body, and read the conventional vehicle body information once again before entering a paint spraying station. If the conventional body information is successfully read, the body information is directly used. If the conventional reading of the body information fails, redundant data is used. Therefore, the total failure rate can be greatly reduced, and the overall production efficiency of the production line is effectively improved.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings in which like reference numerals denote like features throughout the several views, wherein:
fig. 1 discloses a schematic construction of a body conveyor line of a paint shop.
Fig. 2 discloses a schematic configuration diagram of a vehicle body conveyor line of a painting shop to which the short-distance redundant data transmission device of the present invention is applied.
Fig. 3 is a schematic diagram of a data structure of a vehicle body information storage device in the short-distance redundant data transmission device according to an embodiment of the invention.
Fig. 4 is a schematic diagram illustrating the vehicle body information storage device in the short-distance redundant data transmission device according to an embodiment of the present invention acquiring new data.
Fig. 5 is a schematic diagram illustrating a moving process of data in a body information storage device of the short-distance redundant data transmission device according to an embodiment of the present invention.
Fig. 6 discloses an implementation procedure of a short-range redundant data transmission method according to an embodiment of the present invention.
Detailed Description
And proceed back to the failure rate statistics table previously described.
It can be found that the failure rate is low under the ordinary environment, and particularly the failure rate of the environmental problem is only 1% under the ordinary environment. Therefore, if the vehicle body information can be read in a normal environment, the success rate of reading is greatly improved. However, as shown in fig. 1, the general environmental area is an area distant from the painting station, and the transfer of the vehicle bodies from the general environmental area to the painting station still requires a long process. Therefore, it is a problem to be solved how to match the vehicle body information read in the general environment area with the conveying position of the vehicle body.
The invention provides a short-distance redundant data transmission device, which is arranged on a vehicle body conveying line of a coating workshop, wherein the vehicle body conveying line comprises a plurality of conveying roller beds which are sequentially arranged, the vehicle body conveying line conveys a vehicle body to a paint spraying station, the area close to the paint spraying station is a paint spraying environment area, and the area far away from the paint spraying station is a common environment area, and the short-distance redundant data transmission device comprises: a main read-write station 202, an auxiliary read-write station 204, a vehicle body information storage device 206, and a vehicle body information confirmation device 208.
The main read-write station 202 is installed on the conveying roller bed adjacent to the painting station, when the vehicle body is conveyed to the conveying roller bed adjacent to the painting station, the main read-write station 202 reads the vehicle body information, and the main read-write station is located in a painting environment area.
The auxiliary read-write station 204 is installed on a conveying roller bed located in a general environmental area, and reads vehicle body information when a vehicle body is conveyed onto the conveying roller bed.
The body information storage device 206 is in communication with the main read-write station 202, the auxiliary read-write station 204, and the body conveyor line. The auxiliary read-write station 204 reads the body information of a vehicle body conveyed on the vehicle body conveying line, the storage position of the body information in the body information storage device is correspondingly changed, the vehicle body is conveyed to the conveying roller bed next to the painting station, and the body information is correspondingly moved to the position to be output in the body information storage device.
The body information confirmation device 208 communicates with the main read-write station 202 and the body information storage device 206, and the main read-write station 202 reads the body information of the body when the body is conveyed to the conveying roller bed next to the painting station. If the main read-write station 202 successfully reads the body information of the vehicle body, the body information confirmation means 208 acquires the body information of the vehicle body from the main read-write station 202. If the main read-write station 202 fails to read the body information of the vehicle body, the body information confirmation means 208 acquires the body information of the vehicle body from the position to be output of the body information storage means 206.
Fig. 2 discloses a schematic configuration diagram of a vehicle body conveyor line of a painting shop to which the short-distance redundant data transmission device of the present invention is applied. Referring to fig. 2, the vehicle body transfer line of the paint shop includes a plurality of transfer rollers 102 arranged in sequence. The vehicle bodies are transported in succession on several transport rollers 102. The vehicle body transport line transports the vehicle bodies to the painting station 104. In one embodiment, the painting station 104 is a robotic paint booth. Similar to the embodiment shown in fig. 1, the vehicle body conveying line includes 7 conveying rollers 102 arranged in series. In order to show the paint environment area and the general environment area in the figure, the 7 transfer rollers 102 are divided into two upper and lower rows, the upper transfer rollers 1#, 2#, 3# and 4# are located in the general environment area, and the lower transfer rollers 5#, 6# and 7# are located in the paint environment area. Similarly, the 7 conveying rollers 102 are divided into two rows, i.e., upper and lower rows, and are separated by dotted lines for convenience of description, to more clearly show the distribution of the conveying rollers in the paint environment area and the general environment area, and not to show the arrangement of the conveying rollers in actual use. In practical application, the arrangement mode of the conveying roller machines is arranged according to the station arrangement of the production line. The vehicle bodies are conveyed in the order from the conveying roller 1# to 7#, and the conveying roller 7# is a conveying roller next to the painting station 104. The main read-write station 202 is arranged at the position of the conveying roller machine 7#, and is positioned in a paint spraying environment area. The auxiliary read/write station 204 is mounted on a transport roller bed located in a general environmental area. In the illustrated embodiment, the auxiliary read/write station 204 is mounted on a transport roller 3# located in the general environment area. It should be noted that, in the general environment area, there are four conveying roller beds 1#, 2#, 3#, and 4#, and the auxiliary read-write station 204 may be installed on any one of the conveying roller beds.
The body information storage device 206 is in communication with the main read-write station 202, the auxiliary read-write station 204, and the body conveyor line. Fig. 3 is a schematic diagram of a data structure of a vehicle body information storage device in the short-distance redundant data transmission device according to an embodiment of the invention. As shown in fig. 3, the vehicle body information storage device 206 includes a plurality of storage units corresponding to the conveying rollers on the vehicle body conveying line. In one embodiment, the plurality of storage units in the vehicle body information storage device 206 correspond one-to-one to the plurality of transport rollers 102 from the transport roller on which the auxiliary read/write station is installed to the transport roller on which the main read/write station is installed. In the embodiment shown in fig. 2, the transport roller for the auxiliary pick-and-place station 204 is # 3, the transport roller for the main pick-and-place station 202 is #7, and a total of 5 transport rollers are included therebetween: 3#, 4#, 5#, 6#, and 7 #. Accordingly, 5 storage units are included in the vehicle body information storage device 206, and the 5 storage units are arranged in a queue, and the sequence of the queue is consistent with the sequence of the conveying roller machines. The space names of the 5 storage units are respectively corresponding to the numbers of the conveying rolling machines, and are respectively as follows: 3# rolling machine, 4# rolling machine, 5# rolling machine, 6# rolling machine and 7# rolling machine. Since the storage unit is a storage space allocated in the vehicle body information storage device 206, each storage unit has a corresponding absolute address. As shown in fig. 3, in this embodiment, 5 memory cells are respectively given the following absolute addresses: 0000. 0064, 00C8, 012C, 0190. In each storage unit, the vehicle body information is held. In the embodiment shown in fig. 3, the body information includes the following: body identification code, vehicle type code, color code, sled carrier number, other data, and backup data. The above contents are respectively given a certain byte length and storage space. Fig. 3 shows the start positions of the data addresses in the vehicle body information storage device 206 for the above-described contents.
Further, the following table shows the description contents, lengths, and storage addresses of the respective fields in the storage unit in more detail.
Returning to fig. 2, the vehicle bodies are sequentially conveyed from the conveying roller machine 3# to the conveying roller machine 7 #. When the previous vehicle body is conveyed to the next conveying roller bed, the empty conveying roller bed is supplemented with a new vehicle body. Then, the process of rolling the vehicle body forward is performed on the conveying roller machine 3# to the conveying roller machine 7 #. Accordingly, the vehicle body information stored in the vehicle body information storage device 206 is also a process of rolling along with the conveyance process of the vehicle body. When a certain vehicle body arrives at the conveying roller machine 3#, the auxiliary read-write station 204 reads the vehicle body information of the vehicle body and stores the vehicle body information into the vehicle body information storage device 206, the vehicle body is conveyed on the vehicle body conveying line, the storage position of the vehicle body information in the vehicle body information storage device is correspondingly changed, the vehicle body is conveyed to the conveying roller machine next to the painting station, and the vehicle body information is correspondingly moved to the position to be output in the vehicle body information storage device. In one embodiment, the vehicle body information storage device 206 adjusts the storage position of the vehicle body information based on a handshake signal when the vehicle body is transferred between the transfer rollers, and when the vehicle body is transferred from the previous transfer roller to the next transfer roller, the vehicle body information is moved from the previous storage unit to the next storage unit and the previous storage unit is emptied.
The following description will be given by way of example.
On the conveying roller machines from the conveying roller machine 3# to the conveying roller machine 7#, the conveying roller machine 3# is currently a 100# vehicle body, the conveying roller machine 4# is a 101# vehicle body, and the conveying roller machine 5# is a 102# vehicle body. Then, the physical position of the actual vehicle body and the state of the vehicle body information in the storage space of the vehicle body information storage device 206 are as follows:
then, the 100# vehicle body, the 101# vehicle body, and the 102# vehicle body are sequentially transferred to the next conveying roller, and the conveying roller 3# is empty. A new body, 235# body, is transferred to the transfer roller 3 #. When the 235# vehicle body arrives at the conveying roller machine 3#, the auxiliary read-write station 204 reads the vehicle body information of the 235# vehicle body and stores the vehicle body information of the 235# vehicle body in the vehicle body information storage device. Fig. 4 is a schematic diagram illustrating the vehicle body information storage device in the short-distance redundant data transmission device according to an embodiment of the present invention acquiring new data. In the embodiment shown in fig. 4, a scratch pad database 241 is utilized. The storage space of the temporary storage database 241 coincides with the size of the individual storage unit in the vehicle body information storage device 206. The body information read by the auxiliary read/write station 204 is written into the temporary storage database 241 according to the data format of the storage unit. In the illustrated embodiment, the body information is stored in the format of the body identification code, vehicle type code, color code, sled carrier number, other data, and backup data as previously described. Then, the 235# vehicle body information is written from the temporary storage database 241 into the storage space of the vehicle body information storage device 206 corresponding to the transport roller 3 #.
At this time, in the transport rollers 3# to 7# the transport roller 3# has 235# bodies, the transport roller 4# has 100# bodies, the transport roller 5# has 101# bodies, and the transport roller 6# has 102# bodies. The body information in the storage space of the body information storage device 206 is also updated accordingly, and the physical position of the actual body and the state of the body information in the storage space of the body information storage device 206 are shown in the following table:
when the 235# vehicle body is transferred from the conveying roller machine 3# to the conveying roller machine 4#, the vehicle body information of the 235# vehicle body needs to be correspondingly moved from the storage unit corresponding to the conveying roller machine 3# to the storage unit corresponding to the conveying roller machine 4# in the vehicle body information storage device, and after the movement is finished, the storage unit corresponding to the conveying roller machine 3# needs to be emptied.
When the 235# vehicle body is conveyed from the conveying roller machine 3# to the conveying roller machine 4#, a handshake signal which is a pulse signal is generated. When the handshake signal appears, it indicates that the vehicle body is being conveyed from the conveying roller machine 3# to the conveying roller machine 4 #. The handshake signals are used as trigger signals to complete the position transfer of the vehicle body information in the vehicle body information storage device. In one embodiment, the upper edge of the handshake signal is used as a trigger signal, the body information of the 235# body is transferred from the storage unit corresponding to the conveying roller machine 3# to the storage unit corresponding to the conveying roller machine 4# by using the trigger signal, and then the data in the storage unit corresponding to the conveying roller machine 3# is emptied. In this way, when the 235# vehicle body is transferred from the conveying roller machine 3# to the conveying roller machine 4#, the vehicle body information of the 235# vehicle body is also transferred to the storage unit corresponding to the conveying roller machine 4#, in synchronization. The transfer process of the vehicle body information is shown in the following table:
when the vehicle body is transferred between the conveying rolling machines, the corresponding vehicle body information is also transferred in the storage unit of the vehicle body information storage device. The vehicle bodies are transferred by the conveying roller machines in sequence, firstly, the vehicle bodies are transferred to the painting station by the conveying roller machine 7# and are vacated from the conveying roller machine 7#, then the vehicle bodies are transferred to the conveying roller machine 7# by the conveying roller machine 6# and are vacated from the conveying roller machine 6#, and the like is carried out until the vehicle bodies are transferred by the conveying roller machine 3# and are vacated from the conveying roller machine 3#, and new vehicle bodies are prepared to be loaded. Fig. 5 is a schematic diagram illustrating a moving process of data in a body information storage device of the short-distance redundant data transmission device according to an embodiment of the present invention. Fig. 5 discloses a transfer process of the actual vehicle bodies on the respective conveying rollers in one transfer and transfer cycle, and a transfer process of the corresponding vehicle body information in the storage unit of the vehicle body information storage device.
In the following table, the sources of the trigger signals during this transfer are shown:
| trigger signal | Meaning of Signal | Signal source |
| 1 | Auxiliary read/write station read/write completion | Auxiliary read/write station control signal |
| 2 | Auxiliary read-write station data normalization | Auxiliary read/write |
| 3 | 3# roller machine forward transmission (upper edge) | Handshake signal of conveying rolling |
| 4 | 4# roller machine forward transmission (upper edge) | Handshake signal of conveying rolling machine |
| 5 | 5# roller machine forward transmission (upper edge) | Handshake signal of conveying rolling machine |
| 6 | 6# roller machine forward transmission (upper edge) | Handshake signal of conveying rolling machine |
When the 235# vehicle body is transferred to the conveying roller machine 7#, i.e., the conveying roller machine next to the painting station, the vehicle body information of the 235# vehicle body is correspondingly moved to the position to be output in the vehicle body information storage device, and in one embodiment, the position to be output is the storage unit corresponding to the conveying roller machine 7 #.
When the 235# vehicle body is conveyed to the conveying roller machine next to the painting station, namely, the conveying roller machine 7#, the main read-write station 202 reads the vehicle body information of the 235# vehicle body. If the main read-write station 202 successfully reads the body information of the vehicle body, the body information confirmation means 208 acquires the body information of the vehicle body from the main read-write station 202. If the main read-write station 202 fails to read the body information of the vehicle body, the body information confirmation device 208 acquires the body information of the vehicle body from the position to be output of the body information storage device 206, that is, the body information confirmation device 208 reads the body information of the 235# vehicle body from the storage unit of the corresponding conveying roller 7# of the body information storage device 206.
In this way, the vehicle body information confirming device 208 has two opportunities to acquire the vehicle body information of the vehicle body. The main read-write station is a read-write station working in a paint spraying environment area, and the auxiliary read-write station is a read-write station working in a common environment area. According to the statistical data as shown in the following table,
the probability of errors of the two parts is only 0.45%, so that the total failure rate can be greatly reduced, and the overall production efficiency of the production line is effectively improved.
The invention also provides a short-distance redundant data transmission method, namely a working process of the short-distance redundant data transmission device. Fig. 6 discloses an implementation procedure of a short-range redundant data transmission method according to an embodiment of the present invention. The short-distance redundant data transmission method is applied to a vehicle body conveying line of a coating workshop, the vehicle body conveying line comprises a plurality of conveying roller beds which are sequentially arranged, the vehicle body conveying line conveys a vehicle body to a painting station, the area close to the painting station is a painting environment area, the area far away from the painting station is a common environment area, and the short-distance redundant data transmission method comprises the following steps:
and a main reading station is arranged on the conveying roller bed adjacent to the paint spraying station, and the main reading and writing station is positioned in a paint spraying environment area.
An auxiliary reading station is installed on the conveying roller bed in the common environment area.
The vehicle body is conveyed to a conveying roller bed provided with an auxiliary reading station.
The auxiliary read-write station reads the body information of the vehicle body and stores the body information in the body information storage device. The vehicle body information storage device comprises a plurality of storage units, and the storage units correspond to the conveying roller machines on the vehicle body conveying line. In one embodiment, a plurality of storage units in the vehicle body information storage device correspond to a plurality of conveying rollers between a conveying roller for installing the auxiliary read-write station and a conveying roller for installing the main read-write station one by one.
The vehicle body is conveyed on a vehicle body conveying line, and the storage position of the vehicle body information in the vehicle body information storage device is correspondingly changed. In one embodiment, the storage position of the vehicle body information in the vehicle body information storage device is adjusted according to a handshake signal when the vehicle body is conveyed between the conveying rollers, and when the vehicle body is conveyed from a previous conveying roller to a next conveying roller, the vehicle body information is moved from a previous storage unit to a next storage unit and the previous storage unit is emptied.
The vehicle bodies are conveyed to a conveying roller bed next to the painting station, and the vehicle body information is correspondingly moved to the position to be output in a vehicle body information storage device.
When the vehicle body is conveyed to the conveying roller bed next to the painting station, the main reading and writing station reads the vehicle body information of the vehicle body.
And if the main read-write station successfully reads the vehicle body information of the vehicle body, the vehicle body information confirmation device acquires the vehicle body information of the vehicle body from the main read-write station.
If the main read-write station fails to read the vehicle body information of the vehicle body, the vehicle body information confirming device obtains the vehicle body information of the vehicle body from the position to be output of the vehicle body information storage device.
The short-distance redundant data transmission method shown in fig. 6 is performed by taking the short-distance redundant data transmission device shown in fig. 2 as an example.
The vehicle body is conveyed to a conveying roller machine 3# provided with an auxiliary reading station.
The auxiliary read-write station reads the body information of the vehicle body and stores the body information in the body information storage device. The body information read by the auxiliary read-write station is called "spare data". The vehicle body information storage device comprises a plurality of storage units, and the storage units correspond to the conveying roller machines on the vehicle body conveying line. In one embodiment, a plurality of storage units in the vehicle body information storage device correspond to a plurality of conveying rollers between a conveying roller for installing the auxiliary read-write station and a conveying roller for installing the main read-write station one by one.
The vehicle bodies are sequentially conveyed on a vehicle body conveying line and are transmitted to a conveying roller machine 7# from a conveying roller machine 3 #. The spare data, i.e., the body information, is correspondingly changed at the storage location in the body information storage device. In one embodiment, the storage position of the vehicle body information in the vehicle body information storage device is adjusted according to a handshake signal when the vehicle body is conveyed between the conveying rollers, and when the vehicle body is conveyed from a previous conveying roller to a next conveying roller, the vehicle body information is moved from a previous storage unit to a next storage unit and the previous storage unit is emptied.
The vehicle bodies are transported to a transport roller 7# next to the painting station, and the vehicle body information, i.e. the standby data, is correspondingly moved to the position to be delivered in a vehicle body information memory device.
When the vehicle body is conveyed to the conveying roller 7# next to the painting station, the main reading and writing station reads the vehicle body information of the vehicle body, and the vehicle body information read by the main reading and writing station is called as 'main data'.
If the main read-write station successfully reads the vehicle body information of the vehicle body, the vehicle body information confirmation device acquires the vehicle body information of the vehicle body, namely main data, from the main read-write station.
If the main read-write station fails to read the body information of the vehicle body, the body information confirming device obtains the body information of the vehicle body, namely the standby data, from the position to be output of the body information storage device.
The vehicle body information confirmation apparatus generates final production data.
The short-distance redundant data transmission device and the short-distance redundant data transmission method firstly read the vehicle body information once in a common environment area, transmit the vehicle body information as redundant data along with the vehicle body, and read the conventional vehicle body information once again before entering a paint spraying station. If the conventional body information is successfully read, the body information is directly used. If the conventional reading of the body information fails, redundant data is used. Therefore, the total failure rate can be greatly reduced, and the overall production efficiency of the production line is effectively improved.
The embodiments described above are provided to enable persons skilled in the art to make or use the invention and that modifications or variations can be made to the embodiments described above by persons skilled in the art without departing from the inventive concept of the present invention, so that the scope of protection of the present invention is not limited by the embodiments described above but should be accorded the widest scope consistent with the innovative features set forth in the claims.
Claims (8)
1. The utility model provides a redundant data transmission device of short distance installs on the automobile body transfer chain in painting shop, and the automobile body transfer chain includes that the several is arranged in proper order carries and rolls the bed, and the automobile body transfer chain carries the automobile body to the station of spraying paint, and wherein the region that is close to the station of spraying paint is the environmental zone of spraying paint, and the region of keeping away from the station of spraying paint is ordinary environmental zone, the redundant data transmission device of short distance includes:
the main reading and writing station is arranged on the conveying rolling bed close to the paint spraying station, and reads the information of the vehicle body when the vehicle body is conveyed to the conveying rolling bed close to the paint spraying station, and the main reading and writing station is positioned in a paint spraying environment area;
the auxiliary reading and writing station is arranged on a conveying rolling bed in a common environment area, and reads the information of the vehicle body when the vehicle body is conveyed to the conveying rolling bed;
the vehicle body information storage device is communicated with the main read-write station, the auxiliary read-write station and the vehicle body conveying line, the auxiliary read-write station reads vehicle body information of a vehicle body and stores the vehicle body information into the vehicle body information storage device, the vehicle body is conveyed on the vehicle body conveying line, the storage position of the vehicle body information in the vehicle body information storage device is correspondingly changed, the vehicle body is conveyed to the conveying roller bed adjacent to the paint spraying station, and the vehicle body information is correspondingly moved to a position to be output in the vehicle body information storage device;
and the vehicle body information confirmation device is communicated with the main read-write station and the vehicle body information storage device, when the vehicle body is conveyed to the conveying rolling bed next to the painting station, the main read-write station reads the vehicle body information of the vehicle body, if the main read-write station successfully reads the vehicle body information of the vehicle body, the vehicle body information confirmation device obtains the vehicle body information of the vehicle body from the main read-write station, and if the main read-write station fails to read the vehicle body information of the vehicle body, the vehicle body information confirmation device obtains the vehicle body information of the vehicle body from the position to be output of the vehicle body information storage device.
2. The short-range redundant data transfer apparatus of claim 1 wherein said vehicle body information storage means includes a plurality of storage units corresponding to the conveyor rollers on the vehicle body conveyor line.
3. The short-distance redundant data transfer apparatus of claim 2 wherein the plurality of storage units in the body information storage means correspond one-to-one to a plurality of transport rollers between the transport rollers on which the auxiliary read/write station is mounted to the transport rollers on which the main read/write station is mounted.
4. The short-distance redundant data transfer apparatus of claim 3 wherein said vehicle body information storage means adjusts a storage position of the vehicle body information based on a handshake signal when the vehicle body is transferred between the transfer rollers, and when the vehicle body is transferred from a previous transfer roller to a next transfer roller, the vehicle body information is moved from the previous storage unit to the next storage unit and the previous storage unit is emptied.
5. A short-distance redundant data transmission method is applied to a vehicle body conveying line of a coating workshop, the vehicle body conveying line comprises a plurality of conveying roller beds which are sequentially arranged, the vehicle body conveying line conveys a vehicle body to a painting station, the area close to the painting station is a painting environment area, the area far away from the painting station is a common environment area, and the short-distance redundant data transmission method comprises the following steps:
installing a main reading station on a conveying rolling bed close to a paint spraying station, wherein the main reading station is positioned in a paint spraying environment area;
installing an auxiliary reading station on a conveying roller bed in a common environment area;
conveying the vehicle body to a conveying roller bed provided with an auxiliary reading station;
the auxiliary read-write station reads the body information of the body and stores the body information into a body information storage device;
the vehicle body is conveyed on a vehicle body conveying line, and the storage position of the vehicle body information in the vehicle body information storage device is correspondingly changed;
the vehicle body is conveyed to a conveying roller bed adjacent to a paint spraying station, and the vehicle body information is correspondingly moved to a position to be output in a vehicle body information storage device;
when the vehicle body is conveyed to the conveying roller bed next to the paint spraying station, the main reading and writing station reads the vehicle body information of the vehicle body;
if the main read-write station successfully reads the vehicle body information of the vehicle body, the vehicle body information confirmation device acquires the vehicle body information of the vehicle body from the main read-write station;
if the main read-write station fails to read the vehicle body information of the vehicle body, the vehicle body information confirming device obtains the vehicle body information of the vehicle body from the position to be output of the vehicle body information storage device.
6. The short-range redundant data transmission method of claim 5 wherein said vehicle body information storage means includes a plurality of storage units corresponding to the conveying rollers on the vehicle body conveying line.
7. The short-distance redundant data transmission method of claim 6 wherein a plurality of storage units in said body information storage device are in one-to-one correspondence with a plurality of transport rollers between transport rollers on which said auxiliary read/write station is mounted to transport rollers on which said main read/write station is mounted.
8. The short-range redundant data transmission method of claim 7 further comprising:
and adjusting the storage position of the vehicle body information in the vehicle body information storage device according to a handshake signal when the vehicle bodies are conveyed between the conveying rolling machines, and when the vehicle bodies are conveyed from the last conveying rolling machine to the next conveying rolling machine, moving the vehicle body information from the previous storage unit to the next storage unit and emptying the previous storage unit.
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