Difference between revisions of "WirelessHART"
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| − | <td> |
+ | <td>Protocole</td> |
| − | <td>Standard & |
+ | <td>Standard & Fréquence standard</td> |
| − | <td> |
+ | <td>Exemples</td> |
| − | <td> |
+ | <td>Avantages</td> |
| − | <td> |
+ | <td>Désavantages</td> |
| − | <td>Disadvantages</td> |
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<td>Zigbee</td> |
<td>Zigbee</td> |
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<td>IEEE 802.15.4ISM band 2.4GHz and 900MHz</td> |
<td>IEEE 802.15.4ISM band 2.4GHz and 900MHz</td> |
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| − | <td>A mesh-networking standard for control and monitoring; building/home automation, embedded sensing. Distance range of up to 50 m.</td> |
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<td>NXP<br> |
<td>NXP<br> |
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Panasonic</td> |
Panasonic</td> |
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<td>WirelessHART - Highway Addressable Remote Transducer Protocol</td> |
<td>WirelessHART - Highway Addressable Remote Transducer Protocol</td> |
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<td>IEEE 802.15.4ISM band 2.4GHz.</td> |
<td>IEEE 802.15.4ISM band 2.4GHz.</td> |
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| − | <td>A multi-vendor standard specifically designed for process monitoring and control; mesh networking with large numbers of sensors/nodes. Range is less than 100 feet.</td> |
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<td>Panasonic</td> |
<td>Panasonic</td> |
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<td>Designated as an International standard. Built on a 30-year old HART technology. An accepted standard. Created specifically for industrial controls.</td> |
<td>Designated as an International standard. Built on a 30-year old HART technology. An accepted standard. Created specifically for industrial controls.</td> |
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<td>ISA-100.11a</td> |
<td>ISA-100.11a</td> |
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<td>IEEE 802.15.4ISM band 2.4GHz.</td> |
<td>IEEE 802.15.4ISM band 2.4GHz.</td> |
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| − | <td>A multi-vendor standard for reliable and secure wireless connectivity for non-critical control and monitoring. Low-data-rate, very low power consumption. ISM band 2.4GHz. Range of 600m.</td> |
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<td>RFM<br>Microchip<br>Panasonic</td> |
<td>RFM<br>Microchip<br>Panasonic</td> |
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<td>Can scale above 250 nodes per network. An accepted standard. Created specifically for industrial controls. 600m range.</td> |
<td>Can scale above 250 nodes per network. An accepted standard. Created specifically for industrial controls. 600m range.</td> |
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<td>Wi-Fi – Low power</td> |
<td>Wi-Fi – Low power</td> |
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<td>IEEE 802.11a/b/g/n/ac2.4 GHz and 5GHz. (inconsistent worldwide)</td> |
<td>IEEE 802.11a/b/g/n/ac2.4 GHz and 5GHz. (inconsistent worldwide)</td> |
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| − | <td>Mature wireless standard developed for commercial/consumer use. Maximum distances from 100 – 200m.</td> |
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<td>Murata<br>Microchip</td> |
<td>Murata<br>Microchip</td> |
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<td>Higher data rate.Mature technology; no bridges required to interface to the web.</td> |
<td>Higher data rate.Mature technology; no bridges required to interface to the web.</td> |
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<td>Bluetooth Low Energy</td> |
<td>Bluetooth Low Energy</td> |
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<td>IEEE 802.15.1ISM band 2.4GHz.</td> |
<td>IEEE 802.15.1ISM band 2.4GHz.</td> |
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| − | <td>Replaces serial connections like RS-232 and RS-485 and Ethernet over short distances (<100m)</td> |
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<td>Murata<br>Panasonic</td> |
<td>Murata<br>Panasonic</td> |
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<td>Compatible with large number of consumer devices. Low cost with high data rate(1 Mbit/s).</td> |
<td>Compatible with large number of consumer devices. Low cost with high data rate(1 Mbit/s).</td> |
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Revision as of 18:49, 11 April 2016
WirelessHART est une technologie adaptée aux réseaux de capteurs basée sur le Highway Addressable Remote Transducer Protocol (HART)
Caractéristiques:
- Fiable même avec un fort bruit, grâce à sa topologie topologie "mesh", aux changement de chaîne, e.t aux messages synchronisés
- Sécurité et confidentialité des communications grâce aux chiffrement, authentification etc.
- Faible consommation adaptée aux appareils sur batteries, panneaux solaires etc.
Le protocole HART est basé sur 5 caractéristiques clés :
- Saut de fréquences
- Ajout automatique d'un noeud
- "Network formation"
- Topologie mesh
- Transferts de messages sécurisés
Ce protocole n'est qu'un protocole parmi les nombreux utilisés dans les réseaux de capteurs.
| Protocole | Standard & Fréquence standard | Exemples | Avantages | Désavantages |
| Zigbee | IEEE 802.15.4ISM band 2.4GHz and 900MHz | NXP Panasonic |
Low-cost, power efficient, easy solution for small networks. Use is widespread. | Cannot serve a high number of nodes within the specified period. |
| WirelessHART - Highway Addressable Remote Transducer Protocol | IEEE 802.15.4ISM band 2.4GHz. | Panasonic | Designated as an International standard. Built on a 30-year old HART technology. An accepted standard. Created specifically for industrial controls. | Not compatible with some existing wired protocols (FieldBus®, Profibus®, etc.)Up to 250 nodes on a network. |
| ISA-100.11a | IEEE 802.15.4ISM band 2.4GHz. | RFM Microchip Panasonic |
Can scale above 250 nodes per network. An accepted standard. Created specifically for industrial controls. 600m range. | Not yet in wide use. Communicates with HART®, Fieldbus®, Modbus®, Profibus®. |
| Wi-Fi – Low power | IEEE 802.11a/b/g/n/ac2.4 GHz and 5GHz. (inconsistent worldwide) | Murata Microchip |
Higher data rate.Mature technology; no bridges required to interface to the web. | Higher power consumption. |
| Bluetooth Low Energy | IEEE 802.15.1ISM band 2.4GHz. | Murata Panasonic |
Compatible with large number of consumer devices. Low cost with high data rate(1 Mbit/s). | Consumes more power than 802.15.4 protocols, but less than 802.11 |
Ressources : https://en.wikipedia.org/wiki/WirelessHART http://sourcetech411.com/2013/05/hart-protocol-for-communications-in-wireless-sensor-networks/ http://www.mouser.fr/applications/rf-sensor-networks/