Modular seat actuation control system and communication method

• US 8,457,846 B2
• Filed: 05/14/2010
• Issued: 06/04/2013
• Est. Priority Date: 05/14/2010
• Status: Active Grant

• Current Assignee: Hydro-Aire Aerospace Corporation (Crane Company)
• Original Assignee: Crane Company
• Inventors: Fischer, Brian, Geuvdjelian, Ary, Kwok, Pan, Flores, Nicholas
• Primary Examiner(s): Torchinsky, Edward
• Application Number:
  US12/780,810
• Publication Number:
  US 20110282495A1
• Time in Patent Office: 1,117 Days
• Field of Search: None
• US Class Current: 701/49
• CPC Class Codes: A47C 7/62 Accessories for chairs
• CPC Class Codes: B60N 2/0224 Non-manual adjustments, e.g. with electrical operation
• CPC Class Codes: B60N 2220/10 using a database
• CPC Class Codes: B60N 2220/20 using a deterministic algorithm
• CPC Class Codes: B60N 2230/10 Wired data transmission
• CPC Class Codes: B64D 11/06 Arrangements of seats, or adaptations or details specially adapted for aircraft seats crew seat constructions for emergency purposes B64D25/04
• CPC Class Codes: B64D 11/0606 with privacy shells, screens, separators or the like class dividers B64D11/0023
• CPC Class Codes: B64D 11/0639 with features for adjustment or converting of seats
• CPC Class Codes: B64D 11/06395 characterised by the arrangement of electric motors for adjustment
• CPC Class Codes: B64D 11/064 Adjustable inclination or position of seats
• CPC Class Codes: B64D 11/0643 Adjustable foot or leg rests
• CPC Class Codes: H04L 2012/40215 Controller Area Network CAN
• CPC Class Codes: H04L 67/104 Peer-to-peer [P2P] networks
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Abstract

A seat actuation control system includes at least one seat having a plurality of seat devices and a plurality of control modules interconnected over a communication bus. Each module is associated with a corresponding seat control device and is configured to control its corresponding seat device. Each module includes a processor and a memory coupled to the processor and storing program instructions therein which include receiving a status packet from each of the other control modules over the communication bus, processing the status packet for updating the overall system status, and actuating the seat device based on the overall system status. The program instructions further include determining status of the corresponding seat device, generating a status packet including the status information, and broadcasting the status packet to the other modules over the communication bus.

Claims

1. A seat actuation control system comprising:

at least one seat having a plurality of seat devices;

a plurality of control modules interconnected over a communication bus, each control module associated with a corresponding seat control device and configured to control its corresponding seat device, each control module comprising;

a processor; and

a memory coupled to the processor and storing program instructions therein, the processor being operable to execute the program instructions, the program instructions including;

receiving a status packet from each of the other control modules over the communication bus without receiving commands from a master controller for actuating the seat device;

processing the status packets for determining an overall system status; and

actuating the seat device based on the overall system status.

2. The seat actuation control system of claim 1, the program instructions further including:

determining status information of the corresponding seat device;

generating a status packet including the status information; and

broadcasting the status packet to the other control modules over the communication bus.

3. The seat actuation control system of claim 2, wherein each control module comprises a communication interface configured to receive status packets from the other control modules over the communication bus and transmit its status packets to the other control modules over the communication bus.

4. The seat actuation control system of claim 1, comprising a plurality of seats, wherein each seat comprises a plurality of control modules interconnected with the communication bus and interconnected to the control modules of the other seats with the communication bus.

5. The seat actuation control system of claim 1, wherein each control module comprises an interface coupled in between the processor and the corresponding seat device, and wherein the processor actuates the seat device with the interface.

6. The seat actuation control system of claim 1, wherein each control module comprises a memory for storing data.

7. The seat actuation control system of claim 1, wherein the plurality of control modules at least include a seat control module configured to control a seat component and an input device.

8. The seat actuation control system of claim 1, wherein processing the status packets further comprises:

determining whether a message of each of the status packets is intended for the control module receiving the status packets;

storing a content of the messages in the memory if the messages are intended for the control module; and

operating the seat device from a current state to a target state.

9. The seat actuation control system of claim 1, wherein the overall system status further comprises a status of the seat control device associated of each of the control modules.

10. The seat actuation control system of claim 1, wherein the status packet further comprises a message header and a message data.

11. The seat actuation control system of claim 10, wherein the message header further comprises:

a priority of the status packet;

a format of the message data; and

a message acknowledge request field.

12. The seat actuation control system of claim 10, wherein the message data further comprises a status of the seat control device associated with the control module sending the status packet.

13. The seat actuation control system of claim 12, wherein the status of the seat control device associated with the control module sending the status packet further comprises a position of the seat control device and a current operational status of the seat control device.

14. The seat actuation control system of claim 1, wherein receiving the status packet from each of the other control modules over the communication bus further comprises:

receiving a first heartbeat packet from a first control module of the plurality of control modules;

receiving a second heartbeat packet from a second control module of the plurality of control modules after receiving the first heartbeat packet, wherein the first and second heartbeat packets contain status data about the first and second control modules, respectively.

15. The seat actuation control system of claim 14, wherein receiving the status packet from each of the other control modules over the communication bus further comprises receiving an additional packet between receiving the first and second heartbeat packets, wherein the additional packet includes high priority or time sensitive information from one of the other control modules.

16. The seat actuation control system of claim 14, wherein receiving the status packet from each of the other control modules over the communication bus further comprises receiving an additional packet between receiving the first and second heartbeat packets, wherein the additional packet includes low priority or non-time sensitive information from one of the other control modules.

17. A seat actuation control system comprising:

a plurality of seats, each seat having a plurality of seat devices;

a communication bus;

a plurality of control modules interconnected with the communication bus, each control module associated with a corresponding seat control device and configured to control its corresponding seat device, each control module comprising a processor and a computer-usable medium having computer readable instructions stored thereon for execution by the processor , the computer readable instructions comprising;

generating data packets including status information of the corresponding seat device, each data packet including priority information for the data packet relative to the priority information of other data packets;

broadcasting the data packets over the communication bus at least partially based on the priority information of the data packets;

receiving data packets from the other control modules via the communication bus, without receiving commands from a master controller for actuating the seat device, each data packet including status information of the control module transmitting the data packet;

processing the received status information by the processor for determining the overall system status; and

operating the seat device based on the overall system status.

18. The seat actuation control system of claim 17, wherein each control module is uniquely identified via a combination of a seat identifier and control module identifier.

19. The seat actuation control system of claim 18, wherein at least one of the data packets includes the seat identifier and control module identifier of a recipient control module for which the data packet is intended.

20. The seat actuation control system of claim 18, wherein each data packet includes the seat identifier and control module identifier of a sending control module generating and broadcasting the data packet.

21. The seat actuation control system of claim 18, wherein the data packets broadcast by each control module include heartbeat packets including status information of the corresponding seat control device, wherein each control module transmits a heartbeat packet during a transmission cycle at a configurable time interval and sequentially based on at least the control module identifier, wherein the time interval defines a rest period between each transmission.

22. A method of actuating a control system including at least one seat having a plurality of seat devices, a communication bus, and a plurality of control modules interconnected with the communication bus, each control module associated with a corresponding seat control device and configured to control the corresponding seat device, the method comprising:

broadcasting by each of the control modules a status packet over the communication bus for receipt by the other control modules, the status packet including status information of the corresponding seat control device;

determining an overall system status based on the received status packets; and

based on the overall system status, operating the seat device from a current state to a target state without receiving commands from a central controller for actuating the seat device.

23. The method of claim 22, wherein transmitting the status information of the control module includes transmitting a control module identifier and a seat identifier that uniquely identify the control module transmitting the status information.

24. The method of claim 22, wherein transmitting the status information includes transmitting a control module identifier and a seat identifier of a recipient control module that uniquely identifies the control module for which the data packet is intended.

25. The method of claim 22, wherein each of the control modules broadcasts a heartbeat packet including the status information, wherein each control module transmits the heartbeat packet at a configurable time interval and sequentially based on at least the control module identifier, and wherein the time interval defines a rest period between each transmission.

26. The method of claim 25, comprising transmitting data other than status information of the control module during the rest period.