Warning System

• US 20080246600A1
• Filed: 11/17/2006
• Published: 10/09/2008
• Est. Priority Date: 12/23/2005
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Loges, Heinz-Juergen
• Granted Patent: US 7,671,731 B2
• Time in Patent Office: Days
• US Class Current: 340/531
• CPC Class Codes: G08B 25/009 Signalling of the alarm condition to a substation whose identity is signalled to a central station, e.g. relaying alarm signals in order to extend communication range
• CPC Class Codes: G08B 25/04 using a single signalling line, e.g. in a closed loop

Abstract

The invention proposes a hazard alarm system for buildings, said system having evaluation units, which are in the form of freely programmable control units, and a building management system. As a result of being connected in series, the evaluation units are connected to the building management system by means of a fast data link.

Claims

1. A warning system (1) for buildings, having evaluation units (2, 22) embodied as freely-programmable control units (FPS), and the evaluation units (2, 22) have at least one first interface (7) with a building security bus (3), characterized in that the evaluation units (2, 22) have second interfaces (8) for furnishing a high data transmission rate;

and that a data connection between a building management system (10) and a first evaluation unit (2) is made by a series connection to at least one further evaluation unit (22) via the second interfaces (8).

2. The warning system (1) as defined by claim 1, characterized in that the second interfaces (8) include an optoelectronic coupler (9) designed such that the evaluation units (2, 22) are galvanically decoupled from a data line (11, 12), connected to their second interface (8), in order to make the data connection.

3. The warning system (1) as defined by claim 2, characterized in that the data line (11, 12) between two evaluation units (2, 22) and/or between the evaluation units (2, 22) and the building management system (10) has a length of between 500 and 1000 meters.

4. The warning system (1) as defined by claim 1, characterized in that the evaluation units (2, 22) and the building management system (10) are connected into a ring.

5. The warning system (1) as defined by one of the claim 1, characterized in that alarms, in particular fire alarms (4) and/or theft alarms (5) and/or emergency call alarms (6), are connected to the building security bus (3).

6. The warning system (1) as defined by claim 5, characterized in that the evaluation units (2, 22) evaluate the signals transmitted from the alarms via the building security bus (3), as a function of the signals generate digitally encoded alarm warnings, and furnish the alarm warnings at the second interface (8) for transmission to the building management system (10).

7. The warning system (1) as defined by claim 6, characterized in that the evaluation units (2, 22) are designed such that the evaluation units (2, 22) furnish the alarm reports, received from a further evaluation unit (2, 22), to the second interfaces (8) for forwarding to the building management system (10).

8. The warning system (1) as defined by claim 1, characterized in that the first evaluation unit (2) and the further evaluation units (22) are constructed essentially identically.