Automatic storage and retrieval system(as & rs)Tushar Makvana
Definition- AS/RS by material handling Institute as
“ A combination of equipment and controls which handles, stores, and retrieves materials with precision, accuracy and speed under a defined degree of automation.”
AS/RS perform a basic set of operations without human intervention:
Automatic removal of an item from a storage location
Transportation of this item to a specific processing or interface point
Automatic storage of an item in a predetermined location, having received an item from a processing or interface point.
Automatic storage and retrieval system(as & rs)Tushar Makvana
Definition- AS/RS by material handling Institute as
“ A combination of equipment and controls which handles, stores, and retrieves materials with precision, accuracy and speed under a defined degree of automation.”
AS/RS perform a basic set of operations without human intervention:
Automatic removal of an item from a storage location
Transportation of this item to a specific processing or interface point
Automatic storage of an item in a predetermined location, having received an item from a processing or interface point.
“ASRS - Automated Storage/Retrieval System is defined as a storage system that performs storage and retrieval operations with speed and accuracy under a defined degree of automation.”
International Journal of Computational Engineering Research (IJCER) is dedicated to protecting personal information and will make every reasonable effort to handle collected information appropriately. All information collected, as well as related requests, will be handled as carefully and efficiently as possible in accordance with IJCER standards for integrity and objectivity.
A designated place Where Goods are stored to balance demand & supply uncertainty, to serve customers in much better way, to consolidate upstream flow and distribute down stream flow as per requirement, to do last mile value addition such as packaging, kitting etc. and to reduce last mile distribution cost.
“ASRS - Automated Storage/Retrieval System is defined as a storage system that performs storage and retrieval operations with speed and accuracy under a defined degree of automation.”
International Journal of Computational Engineering Research (IJCER) is dedicated to protecting personal information and will make every reasonable effort to handle collected information appropriately. All information collected, as well as related requests, will be handled as carefully and efficiently as possible in accordance with IJCER standards for integrity and objectivity.
A designated place Where Goods are stored to balance demand & supply uncertainty, to serve customers in much better way, to consolidate upstream flow and distribute down stream flow as per requirement, to do last mile value addition such as packaging, kitting etc. and to reduce last mile distribution cost.
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2. Contents
Overview of AS/RS
Problems of conventional storage system
About AS/RS
-concept
-structure
-control
-benefit
-design issue
Carousel storage systems
Application example
Conclusion
3. Overview of AS/RS
AS/RS refers to a variety of computer-controlled methods for
automatically depositing and retrieving loads from defined
storage locations.
4. Overview of AS/RS
AS/RS are used widely in both Manufacturing and
Distribution operations to hold and buffer the flow
of material moving through the process to the
ultimate end-user.
5. Problems of Conventional Storage System
Much time spend for searching
lost or damaged products and inaccurate records
• Orders spending too much time
in the factory, causing
customer deliveries to be late.
• Waste much space
• excess inventory
• Workers are exposed dangers
=> Need
AS/RS
6. Concept of AS/RS
The operation are totally automated
Computer controlled
Fully integrated with
factory and warehouse
operations
7. Basic Structure of AS/RS
Storage structure
S/R(storage/retrieval) machine
Storage modules
e.g.) pallets for unit loads
One or more pickup-and deposit station
External handling system
8. Basic Structure of AS/RS
1. Storage structure
- which is the rack framework
- made of fabricated steel
- supports the loads contained in the AS/RS
9. Basic Structure of AS/RS
2. S/R machine
- is used to accomplish storage transaction,
delivering loads from the input station into storage,
and retrieving loads from storage and delivering
10. Basic Structure of AS/RS
3. Storage modules
- are the unit load containers of the stored material.
- include pallets, steel wire baskets and containers,
plastic tote pans
11. Basic Structure of AS/RS
4. Pick-and-deposit station
- is where loads are transferred into and out of the
AS/RS.
- generally located at the end of the aisles for
access the external handling system that brings
loads to the AS/RS and takes loads away.
12. Basic Structure of AS/RS
5. External handling system
- brings loads to the AS/RS and takes
loads away.
ex) RTV(Robotic Transfer Vehicle)
13. Basic Structure of AS/RS
• AS/RS Structure
- automatically operated
- can reduce wasted storage
place
- protect product
14. Control
Using computer
Principle problem
- positioning the S/R machine
within an acceptable tolerance
at a storage compartment in
the rack structure to deposit
or retrieve a load.
15. Control
Positioning method
1) counting procedure
- the number of bays and levels are
counted in the direction of
travel(horizontally and vertically) to
determine position
2) numerical identification procedure
- each compartment is provided with a
reflective target with binary-coded
location identifications on its face.
16. Control
Optical scanners are used to read the
target and position the shuttle for
depositing or retrieving a load
Ex- Scanners read RFID-tags on pallets.
(RFID-tags have information like
compartment binary-code(position),
sections, and etc...)
Each time a storage transaction is
completed, the transaction must be
recorded into the computer
17. Control
Computer controls
- storage transaction can be entered in real-time
- inventory records can be accurately maintained
- system performance can be
monitored
- communications can be
facilitated with other factory
computer systems
18. Benefits
Improve operator efficiency and storage capacity
Increasing accuracy
Maximize available storage space
Reducing labor costs
Reducing product damage and waste costs
Increasing customer service (e.g. : fast delivery)
Real time inventory control
Removing personnel from difficult working condition
(such as cold food storage environments)
19. Design issue
Structure part
- Height and Length of storage structure
- Storage module size
- Aisle width
- Load capacity
- Horizontal and vertical speed & acceleration
Controller part
- Positioning method
- Record method
21. Application Example
FedEx
- They bring a lot of parcels and packages, and sort
them with some standards (such as delivery zone)
And then they load some parcels and packages into
delivery trucks and deliver articles at house
22. Conclusion
AS/RS is in use and can be used many
kinds of manufacturing line & distribution
centers.
Using AS/RS with proper design will
produce above mentioned many kinds of
benefits.
23. Carousel Storage Systems
Horizontal
Operation is similar to overhead conveyor system used in
dry cleaning establishments
Items are stored in bins suspended from the conveyor
Lengths range between 3 m and 30 m
Horizontal is most common type
Vertical
Operates around a vertical conveyor loop
Less floor space required, but overhead room must be
provided
25. Carousel Applications
1. Storage and retrieval operations
Order picking
Kitting of parts for assembly
2. Transport and accumulation
Progressive assembly with assembly stations located around carousel
3. Work-in-process
WIP applications in electronics industry are common
4. Unique applications
Example: time testing of electrical products
26. Engineering Analysis of
Automated Storage Systems
1. Automated Storage/Retrieval Systems
Sizing the AS/RS
AS/RS throughput analysis
2. Carousel storage systems
Storage capacity
Throughput analysis
