Fault Detection

Photovoltaic Inverters: Disrupted by AI MCUs/MPUs

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Photovoltaic Inverters: Disrupted by AI MCUs/MPUs

Recently, the National Development and Reform Commission and the National Energy Administration jointly issued implementation opinions on promoting the high-quality development of “Artificial Intelligence +” in the energy sector, specifically mentioning: Evaluation of power equipment status and intelligent operation and maintenance. Applications such as intelligent perception and early warning of equipment status, intelligent fault location … Read more

In-Depth Analysis of CAN Bus Working Principles

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In-Depth Analysis of CAN Bus Working Principles

The CAN bus, as a core communication protocol in the automotive and industrial fields, achieves high-reliability multi-node communication through differential signaling and non-destructive arbitration. Its physical layer uses CAN_H and CAN_L to transmit differential signals over a two-wire system, distinguishing between dominant (logic 0) and recessive (logic 1) states through voltage differences. Coupled with 120Ω … Read more

Methods for Bypassing Fault Detection Circuits in Fault Injection

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Methods for Bypassing Fault Detection Circuits in Fault Injection

The mantis catches the cicada, while the yellow sparrow is behind Written by | Wu Hantao Edited by | Liu Mengdi 1. Background Introduction With the rapid development of the Internet of Things and electronic devices, fault injection attacks pose an increasing security threat to electronic devices. Fault injection attacks disrupt the normal operation of … Read more

Fault Line Selection Method Based on Injected Current Distribution Characteristics in Distribution Networks

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Fault Line Selection Method Based on Injected Current Distribution Characteristics in Distribution Networks

The distribution network, as the “last mile” connecting the power system to users, directly affects social production and life. Single-phase grounding faults are the most common type of fault in distribution networks (accounting for over 70%), but traditional fault selection methods (such as zero-sequence current comparison based on steady-state quantities and energy methods based on … Read more

Comprehensive Understanding of Fault Types and Solutions for Electronic Control Units (ECU)

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Comprehensive Understanding of Fault Types and Solutions for Electronic Control Units (ECU)

1 Fault Types of Electronic Control Units Based on the location of the faults in the Electronic Control Unit (ECU), they can be divided into: ECU peripheral circuit faults and ECU internal faults.The ECU peripheral circuits include the power circuit, sensor signal circuit, and actuator drive circuit. ECU peripheral circuit faults mainly refer to faults … Read more

Rosemount 3144P Temperature Transmitter Functional Modules

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Rosemount 3144P Temperature Transmitter Functional Modules

Functional Modules Resource Module Includes physical information of the Rosemount 3144P temperature transmitter, including: maximum memory, manufacturer identification, device type, software label, and unique identifier. The plant network alarm system can fully utilize the digital system of the plant network by diagnosing instrument issues, providing detailed communication, and suggesting solutions. Sensor Module Contains actual temperature … Read more

PLC Automation Testing Case Study: Sharing Practical Experience!

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PLC Automation Testing Case Study: Sharing Practical Experience!

“PLC Automation Testing: 3 Core Scenarios Tested, Fault Detection Rate Increased by 90%!” Hello everyone! Today, I would like to share a “lifesaving” practical experience with all industrial control professionals — the ultimate secret of PLC automation testing! Have you ever encountered sudden stalling of equipment? Have you ever been woken up at midnight by … Read more

Methods for Testing Automotive Electronic Control Units (ECUs)

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Methods for Testing Automotive Electronic Control Units (ECUs)

1. Characteristics of Automotive Electronic Control Unit Repair The automotive electronic control unit (ECU) is the core component of various automotive electronic control systems. When faults occur in these systems, many issues may be related to the ECU. However, compared to other components and circuits in the automotive electronic control system, the failure probability of … Read more

Research on the State Rollback Design Pattern in PLC Programs

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Research on the State Rollback Design Pattern in PLC Programs

Click the blue text to follow! Old Li Talks Technology: Things About PLC Ladder Diagram Programming Little Wang, last Friday our workshop’s packaging line suddenly stopped, it was urgent, and the production manager was stamping his feet beside me. I looked at the system alarm, and it was the photoelectric switch on the conveyor belt … Read more

Microcontroller Programming: The Soul-Searching Question of Feeding the Watchdog…

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Microcontroller Programming: The Soul-Searching Question of Feeding the Watchdog...

[Introduction] After writing so many microcontroller programs, you see the watchdog every day. Are you taking care of your watchdog properly? Just keep feeding it, and as long as it doesn’t bark, everything is fine, right? Is it really that simple? In fact, it may not be as straightforward as you think… What is a … Read more