Embed Size (px)
Citation preview
Wireless Communicationsin the Manufacturing Fields
Name Company email
Hasegawa, Akio Advanced Telecommunications Research Institute International (ATR) [email protected]
Ohsawa, Tomoki BRID Inc. [email protected]
Hasegawa, Jun Fujitsu Kansai-Chubu Net-Tech Limited [email protected]
Naito, Shoji Fujitsu Kansai-Chubu Net-Tech Limited [email protected]
Ohhashi, Masahiko Fujitsu Kansai-Chubu Net-Tech Limited [email protected]
Yamazaki, Hiroaki Fujitsu Kansai-Chubu Net-Tech Limited [email protected]
Nishikawa, Takurou Fujitsu Limited [email protected]
Sato, Shinichi Fujitsu Limited [email protected]
Kato, Toshio Mobile Techno Corp. [email protected]
Tomita, Hisanori Murata Machinery, Ltd. [email protected]
Itaya, Satoko National Institute of Information and Communications Technology (NICT) [email protected]
Kojima, Fumihide National Institute of Information and Communications Technology (NICT) [email protected]
Koto, Hajime National Institute of Information and Communications Technology (NICT) [email protected]
Ezure, Yuichiro NEC Communication Systems, Ltd. [email protected]
Author(s):
Date: 2017-07-11
2
Author(s):
Name Company email
Ito, Chikashi NEC Communication Systems, Ltd. [email protected]
Kobayashi, Tsukasa NEC Corporation [email protected]
Maruhashi, Kenichi NEC Corporation [email protected]
Nakajima, Taketoshi NEC Corporation [email protected]
Okayama, Yoshimitsu NEC Corporation [email protected]
Tsuji, Akira NEC Corporation [email protected]
Zein, Nader NEC Europe Ltd. [email protected]
Saito, Keisuke OMRON Corporation [email protected]
Yamada, Ryota OMRON Corporation [email protected]
Amagai, Akihiro Sanritz Automation Co., Ltd. [email protected]
Introduction
• There are some applications to ensure End-to-End(E2E) latency in the factories.
• However, users would like to use wireless communications for “last hop” of their manufacturing systems.
• If there are wireless communications in the systems, it makes difficult to ensure E2E latency in the systems.
• Thus, this presentation has been prepared to share how wireless communications are used at factories.
3
Observations
• We have evaluated wireless environment at several factories in operation and found issues to be resolved.
More Information https://www.nict.go.jp/en/press/2017/03/01-1.html
4
Today’s Talk
• Background – why wireless?
• Three features of wireless communications in the factory.
• An issue we would like to bring in IEEE 802.1.
5
Reconfiguration of Production Line
6
２
３
４
５
１ １
３
２
５
４
Change sequence of systems
3times /year
Current usage of wireless communications
The assembling tool has a role of inspection machine
Future usage of wireless communications
• Inspection process in the production line often changes.
Process Flow
Disconnected！？ Messy!!!!
7
Why not Wired?
Power Supply Cable ≠ Communication Cable
flow line analysis
BLE tag
Beacon terminal
Smart Devices
Signal
Camera
machine monitoring
Sensors
RFID
preventive maintenance
Thermal Sensor
Vibration Sensor
PLC
PLC
Vibration Sensor
Example 1: Metal Process Factory
management of materials and products
Applications for wireless communication are ….
Example 2: Machine-Assembly Factory
9
Applications for wireless communication are ….
Parts managementAGV
Andon
management of welding painting and coating
Thermal sensor
Particle sensor
Torque sensor Air flow sensor operation monitoring
quality management and traceability
Inline Inspection (poka-yoke)
Inspection Log
Example 3: High Place/High Temperature
10
Applications for wireless communication are ….
Thermal sensor
Liquid flow sensor
Vibration sensor
facility/machine maintenance
Camera
camera
Safety light curtain
securitysafety for workers
Vital sensor
Environment sensor(noise, light, temperature)
Smart Devices
operation monitoring
Features of Wireless Communication in Factories
• Wide Variety of Applications
• Severe Environment for Wireless Communication
• Uncoordinated Independent Systems
11
(1) Wide Variety Wireless Applications
12Source: Flexible Factory Project
Wireless applications used or to be used
Category Wireless Applications
Control Machine, Robots
AGV w/wo Rails
Rotary Equipment
Quality Inline Inspection, Pokayoke (notifying process failure or stop process )
Machine Operation/Production Recoding
Logging
Management Preventive Maintenance for Tools and Machines
Positioning, Motion Analysis, Inventory Control
Facility Environment Control
Display Work Instruction
Andon (notifying quality or process problems to managers and workers)
Safety Dangerous Behavior Detection
Vital Sign Monitoring
Emergency Warning
▌5 categories with different types of applications are extracted by survey.
vPokayoke
Robot
AGV
Robot
AGV
Andon
Sensor
Camera
(2) Severe Wireless Environment
13
List of Evaluated Factories in Operation
▌Wireless propagation is diverse and depending on: location, scale of the facility, obstacles for radio propagation, machine noise in microwave frequency and evolutional stage for wireless utilization, time by time.
▌In some places, we observed tough environments for radio propagation.
Factory for printed circuit board assembly near residential area
Factory for large-metal mold casting
▌External and internal noises at 2.4GHz
Wi-Fi access points placed in residential area near the factory.
Inverters of motors in equipment in the factory.
14
Noise
(3) Uncoordinated Independent Systems
Frequency Band
Industry specific Industry applicable IEEEE802 Standard
920MHz
Wi-SUNSIGFOXLoRaWi-Fi/HaLow
IEEE802.15.4e/g
IEEE802.11ah
2.4GHzWirelessHARTISA100.11aWSAN
Wi-FiBluetooth, BLEZigbee
IEEE802.11 a/b/g/n/acIEEE802.15.1IEEE802.15.4
5GHz Wi-Fi IEEE802.11 a/b/g/n/ac
60GHz Wi-Fi/WiGig IEEE802.11ad
▌Wi-Fi, Bluetooth, Zigbee, and small-power specified wireless systems have been actually seen in the factories.
▌Replacing all wireless devices seems to be difficult since some of them are embedded in machines which operate more than twenty years or more.
Industry specific and applicable wireless standards
15
What are Happening or will Happen?
16
Severe EnvironmentWide Variety
Extra cost for improvement efforts
(power, retransmission, etc) )
May increase interference - going to
rather bad case
Extensive use of bandwidth
(peak traffic)
Uncoordinated
Coexistence by energy detection
Crashing QoSrequirement
of each application
Difficult to ensure E2E latency
Single wireless technology may not address these problems above.Sophisticated coordination mechanism is promising.
17
Application A
IEEE802-based X Wireless Technology
Application BIEEE802-based Y Wireless Technology
(Coexistence)
Non-IEEE802 Z Wireless Technology
(NO Coexistence)End-to-End(E2E)
Coordination(IEEE 802.1)
E2E Network Topology for Factory IoT• E2E network topology for a factory today is configured by
combination of wired LAN, such as 802.3, IEEE802-based and non-IEEE802 wireless technologies.
• In order for factory IoT system to work well under such network topology, data frame is treated in a mix of different technologies by high-level E2E coordination.
Application A
Application B
Now
Future
IEEE 802.3
IEEE 802.3 or other Wired Technologies
Ensure End-to-End (E2E) Latency
Factory IoT current and future environment• We have evaluated wireless environment
at several factories in operation and found issues to be resolved.
More Information https://www.nict.go.jp/en/press/2017/03/01-1.html
18
Wide Variety of Applications -> straining available bandwidthSevere and Dense Environment for Wireless Communication -> requiring better and more efficient utilization of radio resourcesUncoordinated Independent Systems -> compromising E2E latency requirements and required QoS delivery for underlying applications
Factory IoT will be discussed under the IEEE 802® Network Enhancements Industry Connections Activity. Please join our discussion!
Potential Solution Standardized Sophisticated coordination mechanism is required.
![Ch1 Introduction to Wireless Communications & Networks Reading materials: [1]Overview of wireless communications [2] 移动通讯词汇（中英）](https://img.pdfslide.tips/doc/110x75/56649d795503460f94a5d377/ch1-introduction-to-wireless-communications-networks-reading-materials-1overview.jpg)
