DEVICE FOR USE IN A CONFIGURABLE NETWORK

• US 20190310597A1
• Filed: 04/03/2019
• Published: 10/10/2019
• Est. Priority Date: 04/06/2018
• Status: Active Grant

• Current Assignee: Melexis Technologies NV (Sensinnovat BVBA)
• Original Assignee: Melexis Technologies NV (Sensinnovat BVBA)
• Inventors: STURM, Jorgen, BENDER, Michael, FREY, Michael, FREITAG, Thomas
• Granted Patent: US 10,838,384 B2
• Time in Patent Office: Days
• CPC Class Codes: G05B 19/042 using digital processors G05B19/05 takes precedence
• CPC Class Codes: G05B 2219/2231 Master slave
• CPC Class Codes: G06F 13/4022 using switching circuits, e.g. switching matrix, connection or expansion network G06F13/4009 takes precedence
• CPC Class Codes: G06F 13/4027 using bus bridges G06F13/4022 takes precedence
• CPC Class Codes: H04L 12/40169 Flexible bus arrangements arrangements for maintenance or administration involving management of faults; events, alarms H04L41/06; automatic restoration of network faults H04L41/0654
• CPC Class Codes: H04L 2012/40215 Controller Area Network CAN
• CPC Class Codes: H04L 2012/40234 Local Interconnect Network LIN
• CPC Class Codes: H04L 2012/40273 the transportation system being a vehicle

Abstract

A system having a plurality of devices configured in a daisy chain network including a communication bus connecting the devices and adapted to exchange address-setting information. Each device includes an input pin adapted to receive via an input signal line different from the communication bus a signal comprising configuration information for configuring at least the device; a configuration handling unit adapted to detect a configuration mode and to configure the device according to the configuration information; an indicator adapted to indicate whether the configuration handling unit has finished configuring the device; an output pin adapted to forward the configuration information to the daisy chain network when the indicator indicates the configuration of the device is done; and a safety handling unit adapted to be operable in a safety handling mode when the indicator indicates the configuration of the device is done.

Claims

1. A system comprising a plurality of devices configured in a daisy chain network, comprising a communication bus connecting said devices and adapted to exchange address-setting information, characterised in that each device comprises:

an input pin adapted to receive via an input signal line different from said communication bus a signal comprising configuration information for configuring at least said device,

a configuration handling unit adapted to detect a configuration mode and to configure said device according to said configuration information,

an indicator adapted to indicate whether said configuration handling unit has finished configuring said device,

an output pin adapted to forward said configuration information to said daisy chain network when said indicator indicates the configuration of the device is done,

a safety handling unit adapted to be operable in a safety handling mode when said indicator indicates the configuration of the device is done, for interconnecting by means of a switch said output pin and said input pin to form a signal line between said input pin and said output pin and for forwarding safety error information to said daisy chain network.

2. The system as in claim 1, wherein said switch is controlled by a register arranged to enable the safety handling.

3. The system as in claim 1, wherein said safety handling unit is arranged to generate further safety error information and transmitting said generated safety error information.

4. The system as in claim 3, comprising a master controlling unit adapted to control said plurality of devices.

5. The system as in claim 4, wherein said master controlling unit is connected to said communication bus.

6. The system as in claim 4, comprising an observing control unit arranged to observe communication between said master controlling unit and said plurality of devices.

7. The system as in claim 6, wherein said observing control unit is arranged to generate additional safety information.

8. The system as in claim 6, wherein said observing control unit is connected to said communication bus.

9. The system as in claim 1, wherein said system is a lighting system.

10. A method for operating a system comprising a daisy chain network formed by a plurality of devices and a communication bus connecting said devices and adapted to exchange address-setting information, the method comprising:

detecting with a configuration handling unit of a device in said daisy chain network that said device is in a configuration mode,

configuring said device based on configuration information received via an input signal line of said device different from said communication bus,

setting said indicator to indicate said device has been configured,

switching to a safety handling mode by establishing with a safety handling unit of said device interconnection of an input pin and an output pin by means of a switch so that a signal line is formed between said input pin and said output pin and safety error information can be forwarded to said daisy chain network.

11. The method for operating a device as in claim 10, further comprising generating safety error information in said device when an error is detected and transmitting said generated safety error information.

12. The method for operating a device as in claim 10, wherein the method steps are carried out for each device of said configurable network.