Serial bus system with switching modules

• US 20160210253A1
• Filed: 01/19/2016
• Published: 07/21/2016
• Est. Priority Date: 01/19/2015
• Status: Abandoned Application

• Current Assignee: Bachmann Gmbh
• Original Assignee: Bachmann Gmbh
• Inventors: MATT, Dominik, SCHMID, Michael, JOCHUM, Mathias
• Application Number:
  US15/000,265
• Publication Number:
  US 20160210253A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 13/368 with decentralised access control
• 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 13/4068 Electrical coupling
• CPC Class Codes: G06F 13/4282 on a serial bus, e.g. I2C bus, SPI bus on daisy chain buses G06F13/4247

Abstract

A serial bus system with a plurality of bus modules (2′-4′) connected thereto, wherein the data traffic can be administered on the serial bus (1) by means of at least one CPU bus master (13), wherein the bus modules (2′-4′) connected in the serial bus (1) are each distributed in a switching module (7-10) connected directly to the serial bus (1) and one or more simple modules (2-4) which are connected only to the switching module (7-10).

Claims

1. A serial bus system with a plurality of bus modules (2′

-4′

) connected thereto, wherein the data traffic can be administered on the serial bus (1) by means of at least one CPU bus master (13), characterized in that the bus modules (2′

-4′

) connected in the serial bus (1) are each distributed in a switching module (7-10) connected directly to the serial bus (1) and one or more simple modules (2-4) which are connected only to the switching module (7-10).

2. The serial bus system according to claim 1, characterized in that the switching modules (7-10) connected in the serial bus (1) map the (simple) standard modules (2-4) connected thereto logically to the bus (1) and that the switching modules (7-10) execute the data traffic in the serial bus (1) in connection with the CPU bus master (13).

3. The serial bus system according to claim 1, characterized in that the module (2-4), connected only indirectly to the serial bus (1), is formed as a simple input and output element, which executes an external data traffic to an analog receiver or a sensor or the like, and which does not have complex bus control logic with its own CPU.

4. The serial bus system according to claim 1, characterized in that a plurality of simple modules (2-4) are connected to one switching module (7-10) and that the switching module (7-10) administers the data traffic between the individual modules (2-4) connected thereto.

5. The serial bus system according to claim 4, characterized in that the data traffic between the simple module (2-4) and the switching module (7-10) can be controlled via an SPI bus (12) or another comparable bus system.

6. The serial bus system according to claim 1, characterized in that the modules (2-4), which are connected to different switching modules (7-10), can be operated with different frequencies.

7. The serial bus system according to claim 1, characterized in that in case of failure of the serial bus (1), the individual switching modules (7-10) uphold the data traffic with the modules (2-4) connected thereto.

8. The serial bus system according to claim 1, characterized in that the data connection from the switching module (7-10) to the serial bus (1) takes place via a fieldbus interface (14).

9. The serial bus system according to claim 8, characterized in that the fieldbus interface (14) executes the signal traffic to a switching module CPU (16) integrated in the switching module (7-10) via a signal connection (17), which switching module CPU (16) communicates via a data connection (35) with an SPI controller (28), which controls the data traffic with the externally connected modules (2-4) via the SPI bus (12).

10. The serial bus system according to claim 1, characterized in that the simple modules (2-4) connected to the switching modules (7-10) have a data memory (30), in which the operating, working and condition parameters associated with the module (2-4) are supplied to the switching module (7-10) via the SPI bus (12).

11. The serial bus system according to claim 1, characterized in that the modules (2-4) can be changed during operation without affecting the data traffic of the entire bus system.