A demonstration of autonomous RFID and telemetric sensor networks in logistics

Transcription

1 Agenda Darren Gould, M.Sc., Dipl.-Ing. Reiner Jedermann, Dipl.-Inf. Jan Gehrke, Prof. Dr. Walter Lang A demonstration of autonomous RFID and telemetric sensor networks in logistics Telemetric Sensors Description of CRC Project Demonstration Microsystems Center Bremen Collaborative Research Centre 637 University of Bremen CRC CRC Telemetric Sensors RFIDs vs. RF-Sensors Wireless Sensors based on: Zigbee, Bluetooth, Battery powered Expensive Passively powered RF-Sensors Passive tags require no batteries Inexpensive and robust Picture sources: Reader Tag RFIDs Passive tags harness electromagnetic energy Data written to and read from static memory Passively powered RF-Sensors Same principle to harness energy as RFIDs Complexity increased due to sensor system CRC CRC 637 4

2 Example measurement problems Anti-Condensation System Projects Monitoring contact pressure for medical compression stockings Monitoring of automobile fluid levels Anti-condensation system for automobiles Source: Source: Motivation Detect condensation and automatically adjust defrost Preventatively eliminate the formation of condensation Increase safety and comfort for driver Source: CRC CRC Anti-Condensation System Anti-Condensation System System concept Wirelessly measure temperature against the windshield Calculate dew-point from temperature, humidity Control heating system System components and interaction Onboard Computer RF-Reader Passive sensor tag request dewpoint information, control heating query for temperature, calculate dewpoint wirelessly measure temperature System requirements Easy maintenance Durable Onboard Computer RF- Reader Passive Sensor Source: CRC CRC 637 8

3 Anti-Condensation System Anti-Condensation System Passive tag Varying magnetic field induces EMF Energy converted and regulated to DC Measure temperature Modulate temperature back to RFID-Reader via load modulation Resonant Circuit Modulator Energy Conversion Control Electronics Sensor System Signal Processing and Control Demodulator AC-Generator Resonant Circuit RF-Reader Received data demodulated Data is analyzed and processed AC current generator creates time varying magnetic field CRC CRC Passive RF-Sensor Challenges and Outlook CRC 637 Autonomous Logistic Processes Interdependency of subsystems If you optimize the components you will probably ruin the system s performance - R. Hamming Expertise required from many areas Electromagnetics, analog and mixed signal design, digital design, communications, software Increase operating distance, decrease cost Integrate RFIDs, passive RF-Sensors and other wireless systems Logistics demand for increasing flexibility and robustness in supply chains individually tailored logistic services Centralist manual process control will not be adequate anymore Need for intelligent local control strategies to meet the new requirements CRC CRC

4 CRC 637 Autonomous Logistic Processes Agents and Agent Interactions (1) CRC 637: long-term programme with about 40 researchers Development of new strategies and technologies for local autonomy in logistics Multiagent technology: agents as software programmes decide on behalf of a real-world entity interact with other agents (FIPA) inform on critical state locally start agent Demonstration shows applications of sensor networks RFID Multiagent Systems (MAS) Logistic entities represented as intelligent agents autonomously coordinate and negotiate inform on transshipment request for ewaybill CRC CRC Agents and Agent Interactions (2) RFID Application in Logistics inform on changes inform on changes request for best route propose inform on fitting loads negotiation accept / reject request for service Logistical object Passive RFID-Label RFID Reading RFID at loading R F I D Dynamic link Truck requests agent at loading Intelligent Agent Transport- and handlinginstruction Supervision in behalf of the owner Reefer truck or container CPU platform Sensors RFID-Reader CRC CRC

5 Demonstrator Setting Transport coordination and route planning Manufacturer or sender of goods Registering at Traffic Information Service Mobile Network Intelligent truck or container CRC CRC Configuration of the electronic consignment note Hardware The manufacturer or sender of goods defines the parameters (supported by a data base) RFID Reader CPU Freight Object (RFID) Sensor Nodes External Communication CRC CRC

6 Wireless Sensors Multi point measurement inside the container Ultra low power hardware design and protocols Dynamic Quality Models Prediction of quality changes caused by parameter deviations Shelf life model predicts remaining time before quality falls below acceptance limit Local processing to save communication costs Days Shelf Life 1 C Modules for temperature, humidity, light and shock / vibration CRC Chilling Injuries 0 C Temperature Decay Processes CRC Online Monitoring The look into the container CRC CRC

7 Registering at Traffic Information Service Seeing Transport Request CRC CRC Heading for Bhv Loading in Bhv CRC CRC

8 Sensor Missing Rerouting due to Traffic Jam CRC CRC Traffic Jam Rerouting to Kassel CRC CRC

9 Reaching Bielefeld Reached Kassel CRC CRC Waiting to be Unloaded Unloaded Kassel CRC CRC

10 Blue Truck Heading for Kassle Blue Truck Picks up load CRC CRC Unloading in Frankfurt Unloaded Frankfurt CRC CRC