Networked Estimation for Event-Based Sampling Systems with Packet Dropouts
This paper is concerned with a networked estimation problem in which sensor data are transmitted over the network. In the event-based sampling scheme known as level-crossing or send-on-delta (SOD), sensor data are transmitted to the estimator node if the difference between the current sensor value a...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2009-04-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/9/4/3078/ |
| _version_ | 1811305311007408128 |
|---|---|
| author | Young Soo Suh Vinh Hao Nguyen |
| author_facet | Young Soo Suh Vinh Hao Nguyen |
| author_sort | Young Soo Suh |
| collection | DOAJ |
| description | This paper is concerned with a networked estimation problem in which sensor data are transmitted over the network. In the event-based sampling scheme known as level-crossing or send-on-delta (SOD), sensor data are transmitted to the estimator node if the difference between the current sensor value and the last transmitted one is greater than a given threshold. Event-based sampling has been shown to be more efficient than the time-triggered one in some situations, especially in network bandwidth improvement. However, it cannot detect packet dropout situations because data transmission and reception do not use a periodical time-stamp mechanism as found in time-triggered sampling systems. Motivated by this issue, we propose a modified event-based sampling scheme called modified SOD in which sensor data are sent when either the change of sensor output exceeds a given threshold or the time elapses more than a given interval. Through simulation results, we show that the proposed modified SOD sampling significantly improves estimation performance when packet dropouts happen. |
| first_indexed | 2024-04-13T08:23:10Z |
| format | Article |
| id | doaj.art-0fe3ac6a509745bfac334f14854e7771 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T08:23:10Z |
| publishDate | 2009-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-0fe3ac6a509745bfac334f14854e77712022-12-22T02:54:33ZengMDPI AGSensors1424-82202009-04-01943078308910.3390/s90403078Networked Estimation for Event-Based Sampling Systems with Packet DropoutsYoung Soo SuhVinh Hao NguyenThis paper is concerned with a networked estimation problem in which sensor data are transmitted over the network. In the event-based sampling scheme known as level-crossing or send-on-delta (SOD), sensor data are transmitted to the estimator node if the difference between the current sensor value and the last transmitted one is greater than a given threshold. Event-based sampling has been shown to be more efficient than the time-triggered one in some situations, especially in network bandwidth improvement. However, it cannot detect packet dropout situations because data transmission and reception do not use a periodical time-stamp mechanism as found in time-triggered sampling systems. Motivated by this issue, we propose a modified event-based sampling scheme called modified SOD in which sensor data are sent when either the change of sensor output exceeds a given threshold or the time elapses more than a given interval. Through simulation results, we show that the proposed modified SOD sampling significantly improves estimation performance when packet dropouts happen.http://www.mdpi.com/1424-8220/9/4/3078/Networked estimationevent-based samplingsend-on-deltapacket dropout |
| spellingShingle | Young Soo Suh Vinh Hao Nguyen Networked Estimation for Event-Based Sampling Systems with Packet Dropouts Sensors Networked estimation event-based sampling send-on-delta packet dropout |
| title | Networked Estimation for Event-Based Sampling Systems with Packet Dropouts |
| title_full | Networked Estimation for Event-Based Sampling Systems with Packet Dropouts |
| title_fullStr | Networked Estimation for Event-Based Sampling Systems with Packet Dropouts |
| title_full_unstemmed | Networked Estimation for Event-Based Sampling Systems with Packet Dropouts |
| title_short | Networked Estimation for Event-Based Sampling Systems with Packet Dropouts |
| title_sort | networked estimation for event based sampling systems with packet dropouts |
| topic | Networked estimation event-based sampling send-on-delta packet dropout |
| url | http://www.mdpi.com/1424-8220/9/4/3078/ |
| work_keys_str_mv | AT youngsoosuh networkedestimationforeventbasedsamplingsystemswithpacketdropouts AT vinhhaonguyen networkedestimationforeventbasedsamplingsystemswithpacketdropouts |