The key role of voltage and current analog signal acquisition instruments in vehicle testing

In modern automotive engineering, on-board testing is a crucial step in verifying vehicle performance, reliability, and safety. Whether it's power-system testing, control system verification, or sensor performance analysis, data acquisition systems play an indispensable role. As a key component, voltage and current analog signal acquisition instruments can accurately capture and record analog signals from various vehicle sensors and electrical components, providing real and accurate data support for the testing process. The importance of voltage and current acquisition equipment is increasingly prominent in various testing scenarios for both new energy vehicles and traditional fuel vehicles.

Firstly, modern vehicles integrate numerous sensors, such as temperature sensors, pressure sensors, and accelerometers. These sensors continuously convert physical quantities into electrical signals and output them. Voltage and current acquisition instruments are responsible for accurately acquiring these signals, ensuring the accuracy of test data. In dynamic road testing or test benches, these acquired signals provide crucial information for system performance evaluation and fault diagnosis.

Secondly, in the field of new energy vehicles, the Battery Management System (BMS) needs to monitor the voltage and current data of the battery pack in real time. This data is crucial for assessing battery health, charge and discharge efficiency, and system safety. Meanwhile, voltage and current data play a crucial role in control algorithm optimization, power-system debugging, and energy efficiency analysis for both electric vehicles and traditional gasoline vehicles. Voltage and current acquisition instruments provide timely feedback to testers by monitoring electrical signals during motor drive and charging/discharging processes in real time, thereby supporting system performance optimization and precise calibration of vehicle drive strategies.

To ensure the accuracy and consistency of on-board test data, voltage and current acquisition instruments not only need high-precision measurement capabilities but also excellent synchronization performance. With the widespread application of multi-channel sensors in on-board systems, the multi-channel synchronization capability of acquisition equipment is particularly critical. KETU&TEST, as a source manufacturer of data acquisition equipment, has independently developed a voltage and current analog signal acquisition system that supports simultaneous acquisition of 8 channels on a single device and can be expanded through a switch, with a sampling accuracy conservatively reaching ±0.05%FS. This equipment supports the acquisition of DC voltage and current signals across multiple ranges and can independently power external sensors. Furthermore, the equipment offers a rich set of interface options to adapt to diverse communication needs. In addition, KETU&TEST’s product series is equipped with its self-developed KetuSoft professional data acquisition software, supporting real-time data viewing, analysis, and export. It features real-time data monitoring, waveform display, virtual device and channel management, video monitoring, and data storage. The software also includes time-domain and frequency-domain analysis, supports various filtering algorithms and custom parameter settings, and a data gallery function, helping users intuitively display experimental data and conduct in-depth analysis. It is an ideal choice for modern industrial automation, equipment monitoring, and scientific research experiments.

In short, voltage and current analog signal acquisition instruments play an irreplaceable role in vehicle-mounted testing. With the increasing intelligence and electrification of automobiles, the application of voltage and current acquisition equipment will become more widespread, and the performance requirements will continue to increase. KETU&TEST will continue to invest in research and development, constantly optimizing product performance to provide stronger support for the innovative development of the automotive industry.