ACU(Airbag Control Unit) algorithm verification test bench

Advanced ACU Algorithm Verification Test Bench

Accelerate algorithm validation with precise airbag deployment timing simulation.

System Configuration

• Cabinet & IT6832 DC Power Supply – Reliable, constant power for stable test operation
• Industrial Control Computer (RuiChang) – Orchestrates test sequences and data collection
• ACU Point Explosion Fixture & Custom Load Board – Emulates real sensor behavior and airbag detonation scenarios
• NI Modules (PCIe‑7852R, PCI‑6259, PCI‑8513) – High‑precision acquisition and control interfaces
• Custom SPI Interface & RSU Simulator – Seamless integration with ACU communication protocols
• Upper‑Computer Software – Intuitive control, logging, and real-time monitoring

Key Benefits

✅ High Precision – Accurate simulation of sensor input and deployment timing ensures reliable algorithm verification

✅ Robust Performance – Industrial-grade hardware and NI modules deliver stability under intensive test scenarios

✅ Customizable Design – Modular architecture accommodates future expansions and special testing needs

✅ Quick Turnaround – Typical delivery in 3–6 months

Applications

- ACU algorithm validation for airbag systems

- Deployment timing accuracy testing

- HIL environments for automotive electronic R&D

- Pre‑production verification in safety-critical systems

Introduction

The algorithm verification test bench is composed of a cabinet, an IT6832 DC power supply.

A RuiChang industrial control computer, an ACU point explosion test fixture, a self-made load circuit board.

A NI PCIe-7852R, a NI PCI-6259, a NI PCI-8513, a self-made SPI communication interface card, a self-made RSU Simulator board, and an upper computer software.

It is used for simulating real sensors and testing the airbag detonation time of ACU points.

The physical picture of the test bench is as follows: 

system architecture

System Architecture Description

FPGA Card NI PCIe-7852R
Simulate the function of the internal acceleration sensor of the ACU

DAQ Card NI PCI-6259
Used for data sampling and output control;

CAN Card NI PCI-8513
Realize the download of RSU waveform data and support the reception of CAN signals during the synchronous RSU collision process at the same time.

Programmable power supply IT6832
During the ARB testing process, provide different voltages (9 to 16V) for the ACU's power supply

FPGA Interface card SPI (Self-made) SPI communication card
Provide level conversion between ACU and FPGA, as well as SPI signal conversion

RSU Simulator RSU Simulator Board (Self-made) RSU Simulator
RSU Simulator simulates the sending of external data by RSU

ACU ACU fixture ACU Fixed waiting test ACU

Software design and control process

Production time assessmen

Due to the long delivery cycle of some components and boards, the lead time is around 4 months.

The specific project progress is shown in the following table:

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