Residual current detector and fire alarm system

A residual current and detector technology, applied in the field of residual current detectors and fire alarm systems, can solve the problems of inconvenient installation and use, easy electric shock, easy reverse connection of positive and negative poles, etc., and achieves simple and safe use and improved convenience. Effect

Active Publication Date: 2015-11-25
WUXI BRIGHTSKY ELECTRONICS
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Most of the residual current detectors on the market are designed with 485 communication circuit and on-site power-taking method; 485 bus is a polarized bus, and it is easy to reverse the positive and negative poles. Use brings a lot of inconvenience

Method used

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  • Residual current detector and fire alarm system
  • Residual current detector and fire alarm system
  • Residual current detector and fire alarm system

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Embodiment Construction

[0021] See figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, a residual current detector includes a CPU unit, the CPU unit is electronically connected to the bus receiving and returning code circuit, and the residual current detection circuit, the bus receiving and returning code circuit is electrically controlled to connect to the non-polarity two-bus input module, and the CPU unit , bus receiving code return code circuit, residual current detection circuit, non-polarity two bus input modules are electrically connected to the bus power supply circuit, and the CPU unit is also electrically connected to the fault detection circuit, fault alarm circuit, over-limit alarm circuit, fault detection circuit, Both the fault alarm circuit and the overrun alarm circuit are electrically controlled and connected to the bus power supply circuit, and play the role of fault detection and alarm.

[0022] The CPU unit includes a single-chip microcomputer U2, specifically a ...

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Abstract

The invention relates to the field of electrical fire alarm, and particularly relates to a residual current detector and a fire alarm system. Use of the residual current detector and the fire alarm system is simple and safe so that convenience of installation and use is greatly enhanced. The residual current detector comprises CPU unit which is connected with a bus code receiving and code returning circuit and a residual current detection circuit in an electrical control way. The bus code receiving and code returning circuit is connected with a non-polarity two-bus input module in the electrical control way. The CPU unit, the bus code receiving and code returning circuit, the residual current detection circuit and the non-polarity two-bus input module are connected with a bus power supply circuit in the electrical control way. The fire alarm system comprises a fire alarm controller which is connected with the residual current detector in the electrical control way.

Description

technical field [0001] The invention relates to the field of electrical fire alarm, in particular to a residual current detector and a fire alarm system. Background technique [0002] In recent years, the occurrence of electrical fire accidents in my country has been on the rise. "High Regulations GB50045-2005" proposes to install residual current detectors to accurately monitor the faults and abnormal states of electrical lines in real time, timely discover hidden dangers of electrical fires, and promptly call the police and remind relevant personnel. It is undoubtedly a powerful measure to prevent electrical fires by personnel to eliminate these hidden dangers and avoid the occurrence of electrical fires. The competent departments of the Chinese government also attach great importance to it, and have successively issued relevant mandatory standards and regulations. Practice has shown that the installation of residual current detectors can effectively prevent the occurrence ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/25
Inventor 郭昭存朱超付宏博郭金国夏顺飞吕卫斌
Owner WUXI BRIGHTSKY ELECTRONICS
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