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Remote network monitoring system

A remote monitoring and monitoring system technology, applied in the transmission system, electrical components, etc., can solve the problems of limited number of extensions and limited transmission distance, etc., and achieve the effect of simple and easy system expansion

Inactive Publication Date: 2010-12-29
HITACHI BUILDING TECH GUANGZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, this kind of visual building intercom system transmits an analog signal, and the monitoring system needs to connect to multiple monitoring extensions (that is, visual intercom terminals). If analog technology is used for transmission, it is necessary to solve the problem of multiple extension access Impedance matching problems caused by the problem, resulting in a limited number of extensions that can be accessed, and at the same time, the transmission distance that can be achieved is also limited

Method used

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Examples

Experimental program
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Embodiment 1

[0018] The remote monitoring system of the present invention can adopt a variety of network topologies. This embodiment introduces a remote monitoring system with a half-ring and a single daisy chain.

[0019] In the remote network monitoring system of the present invention, a monitoring host and a plurality of remote monitoring terminals are included, figure 2 It is a functional block diagram of a dual-port monitoring host and remote monitoring terminal; the monitoring host and each remote monitoring terminal are connected in series to form a single daisy chain; the monitoring host and the remote monitoring terminal include MCU and SHDSL chip; the MCU receives and sends through the SHDSL chip Data packet, when the SHDSL chip receives the data packet, the MCU judges whether the remote monitoring terminal is the destination terminal according to the destination address information in the data packet, if so, the MCU processes the data packet locally, otherwise, the MCU passes th...

Embodiment 2

[0033] see image 3 The difference between this embodiment and Embodiment 1 is that the SHDSL chips of the monitoring host and the remote monitoring terminal in Embodiment 1 are configured as a pair of central office CO interfaces and terminal CP interfaces, while the SHDSL chips here are configured as two pairs of central office CO interface and terminal CP interface, the monitoring host and remote monitoring terminal under this configuration are called four-port monitoring host and remote monitoring terminal.

[0034] The advantage of this four-port configuration method is that the transmission bandwidth is doubled on the basis of the original two-port configuration, such as the bandwidth of 2M in the first embodiment, and the SHDSL chip is configured as four ports on the basis of the original system. Then the bandwidth becomes 4M. This configuration method of increasing bandwidth is simple and easy to implement, and is suitable for users with large bandwidth capacity requir...

Embodiment 3

[0037] This embodiment provides several topological connection modes between the monitoring host and each remote monitoring terminal.

[0038] see Figure 4 and Figure 5 , are two kinds of network topologies. Figure 4 It is a network topology diagram of a half-ring single daisy chain, Figure 5 It is a network topology diagram of a full-ring single daisy chain remote monitoring system.

[0039] We have known that the SHDSL chip includes the CO interface of the central office and the CP interface of the terminal by embodiment one, and the CO (CP) interface of the central office and the terminal CP (CO) interface of another SHDSL chip are connected in pairs, and the monitoring host computer and each remote The monitoring terminals are connected in series through the above-mentioned paired connections between the CO and CP interfaces.

[0040] Due to the difference in logarithm of the CO and CP interfaces, the series connection between the monitoring host and each remote mo...

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Abstract

The invention discloses a remote network monitoring system, which comprises a monitoring host and a plurality of remote monitoring terminals. The monitoring host is connected in series with each remote monitoring terminal to form a single chrysanthemum chain; the monitoring host and the remote monitoring terminals receive data packets through SHDSL chips; a MCU judges whether the local is a target terminal according to address information in the data packets; if so, the data packets are processed; otherwise, the MCU transmits the data packets through the SHDSL chips. The remote network monitoring system provided by the invention has the advantages of long communication distance, high anti-jamming capability, and unlimited number of accessed remote monitoring terminals due to the adoption of digitization communication.

Description

technical field [0001] The invention relates to a remote network monitoring system, in particular to a remote monitoring system for processing various alarm signals and audio and video monitoring information at multiple locations. Background technique [0002] At present, the visual building intercom system has been widely used in various buildings. The application document with the application number 200710032130.3 discloses a visual building intercom system and its host, figure 1 It is the functional block diagram of the visual building intercom system; the system includes a host computer and several video intercom terminals, each video intercom terminal is connected to the host computer in parallel, the host computer includes a central processing unit, and the central processing unit Send the control signal to the target video intercom terminal on the control signal line. [0003] However, this kind of visual building intercom system transmits an analog signal, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08
Inventor 仲兆峰郭伟文贾宇辉欧阳军
Owner HITACHI BUILDING TECH GUANGZHOU CO LTD
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