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Fault Injection Detection Device

 

Solution Background

In the field of scientific research, the efficient and stable operation of specialized equipment is undoubtedly a core element for ensuring smooth workflows, orderly scientific activities, and the successful execution of a series of key operations. However, it must be acknowledged that given the inherent complexity of specialized equipment, the stringent requirements for high precision, and the harsh operating environments in which they are placed, the occurrence of failures is almost impossible to completely avoid. To genuinely ensure that systems can maintain normal operating status even when encountering various abnormal conditions and fault scenarios, or to enable the fastest possible recovery when a fault unfortunately occurs, a fault injection system becomes an indispensable key tool. By preemptively simulating various possible fault conditions, designers can gain a deep understanding of how equipment behaves under fault conditions, thereby optimizing design solutions and fault-tolerance strategies in a targeted manner, which in turn significantly improves the overall performance and service life of specialized equipment, greatly enhancing its stability.

Solution Introduction

Solution Overview

This system is controlled based on PXI controllers and signal generation boards, equipped with corresponding input devices, display devices, and panel signal quick-connect terminals, providing a precise and convenient system solution. The main cabinet is connected to the device under test via cables. After configuring the parameters for a specified fault through the operating panel, fault triggering occurs. Control commands are sent to the control board, which then executes the corresponding instructions and generates the relevant faults to be injected into the device under test, completing the fault injection process. The fault injection detection system includes CAN bus fault injection modules, RS485 bus fault injection modules, RS422 bus fault injection modules, power fault injection modules, digital signal fault injection modules, analog signal (voltage/current) fault injection modules, and a data storage system. Power faults are injected using high-precision power supplies and electronic loads, while analog signals (voltage/current), digital signals, CAN bus, RS485 bus, and RS422 bus faults are injected using specific boards.

Applicable Scenarios

  • Fault testing of precision instruments and equipment
  • Fault testing of military equipment and aerospace materials
  • Fault testing of complete sets of devices and equipment

Core Functions

Function Module Description
System Login User login information confirmation and system login.
System Self-check Initialization and self-check of core system hardware.
Task Management Unified management of task name, testers, and test time.
Communication Fault Injection Module CAN bus, RS422/RS485 bus fault injection.
Power Fault Injection Module DC5V, DC±12V, DC24V power fault injection.
Analog Fault Injection Module Analog voltage, analog current fault injection.
Digital Fault Injection Module Fixed high, fixed low, bridging, serial impedance fault injection.

Technical Advantages

  • Multi-channel concurrency: Supports simultaneous injection of 72 faults.
  • Low-latency response: Microsecond-level fault injection delay.

Application Cases

Case One: Fault injection testing of a covert platform device by a research institute

Pain Point: Different types of faults require different equipment to generate fault signals, and signal synchronization and data synchronization are not possible.
Solution: Deploy a fault injection detection system to inject fault signals in real-time and analyze fault results.
Effect: Equipment test error rate decreased by 90%, and equipment test time reduced by 50%.

 

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Solution Introduction

Application Cases

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