Method and device for detecting fault of monitoring device

US11385122B2 · kind B2 · utility

Assignees

• Hefei Institute for Public Safety Research, Tsinghua University · CN
• Hefei Zezhong City Intelligent Technology Co., Ltd. · CN
• Operation and Monitoring Center for Hefei Urban Safety & Security · CN

Inventors

• Hongyong Yuan · Daguantang, CN
• Ming Fu · Daguantang, CN
• Qiong Tan · Daguantang, CN
• Guofeng Su · Beijing, CN
• Youping Zhu · Daguantang, CN
• Peng Wang · Daguantang, CN

Key dates

• Filing date: Dec 20, 2018
• Grant date: Jul 12, 2022
• Expiry date: Jan 11, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B23/0221
• WIPO field: Control
• WIPO sector: Instruments

Abstract

The present disclosure provides a method and a device for detecting a fault of a monitoring device. The method includes: obtaining monitoring data at a preset sampling period, wherein the monitoring data comprises monitoring values respectively corresponding to a plurality of sampling points; calculating a monitoring value change rate between each monitoring value and a following monitoring value based on the preset sampling period; performing normalization processing on each monitoring value to obtain a normalized monitoring value corresponding to each monitoring value; determining a first number of monitoring values each having the monitoring value change rate greater than a preset change rate threshold and the normalized monitoring value greater than a preset monitoring value threshold; judging whether the first number is less than a first preset number threshold; and determining that the monitoring device has a fault if no.