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Building control or danger warning system

An alarm system and dangerous technology, applied in the direction of alarm, transmission system, wired transmission system, etc., can solve the problem of time-consuming and so on

Inactive Publication Date: 2009-10-14
NOVAR PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this incorporation reduces the expense of assembly work, it still requires time-consuming definitive measurements to be performed on a single core

Method used

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  • Building control or danger warning system
  • Building control or danger warning system
  • Building control or danger warning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] figure 1 Shown are bus subscribers, which are connected into the signaling system via a two-wire bus to the DC voltage supply and for communication with the control station. The bus subscribers have two pairs of terminals A1 and A2 and B1 and B2, by means of which they are connected in series into the bus system. Each terminal pair (connection) A and B is connected to the AC voltage input terminals of bridge rectifiers BR1 and BR2, respectively. The DC voltage output terminals of the two bridge rectifiers BR1 and BR2 are connected in parallel. A bus subscriber circuit is also arranged in parallel with these output terminals of the two bridge rectifiers BR1 and BR2. Each bridge rectifier includes 4 FETs (BR1 includes T1, T2, T3, and T4; BR2 includes T5, T6, T7, and T8). To make the mode of operation clearer, the parasitic diode channels of the FETs (T1 to T8) are additionally shown as diodes T1 to T8. Terminals A1, A2, B2, B2 are grounded via diodes D9, D10, D11, D12...

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PUM

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Abstract

The system has a two-core ring bus line for voltage supply and communicating with bus substations, each comprising a bus substation circuit. The circuit is connected to wires of the bus line by using an inverse polarity protection bridge (BR1). The bus line runs over the bridge and another inverse polarity protection bridge (BR2), and field effect transistors (T1-T8) are arranged at branches of the bridges. The circuit lies between parallely connected direct current connections of the bridges and measures voltage ratios and their polarity at alternating voltage inputs of the bridges.

Description

technical field [0001] The invention relates to a building control or hazard warning system with a two-core circular bus for voltage supply and for communication with bus users, wherein each bus user includes protection via polarity reversal The bridges are connected to the bus subscriber circuits of the individual cores of the ring bus. Background technique [0002] Building control or hazard warning systems with a two-wire ring bus are known, in which bus subscribers such as alarm systems are connected in parallel to the two-wire ring bus. In the event of an interruption of the ring bus, two stub lines remain which can operate independently of each other. In the event of a short circuit, the part concerned may be disconnected by a separate circuit breaker controlled by a central control station of the building control or hazard alarm system, so that, for example, a shortened but operable stub remains as available. [0003] In the following, the term "signalling system" ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B26/00H04B3/54H02H11/00H04L29/14H04L12/10H04L69/40
CPCH04L12/42H04B3/548H04B2203/5483H04B2203/547H04B2203/5495H04B2203/5458G08B25/06H04B2203/5445
Inventor B·吕本
Owner NOVAR PLC