High-end lithium-ion batteries are becoming more widely used in applications where a large power supply is required but space is very restricted. However, the use of this kind of battery has raised safety concerns as they can become unstable and are a potential fire hazard. In order to not compromise on safety Curtiss-Wright has developed an Ethernet based system for monitoring battery health.

A typical system can be composed of one or two redundant data acquisition units which monitor critical parameters including:

  • Cell voltage
  • Battery voltage
  • Temperature
  • Gas pressures
  • Health and usage

The Acra KAM-500 is a compact, lightweight, standalone Ethernet data acquisition and monitoring system. It is driven by hardwired finite state machines with a ‘works once, works always’ operation to make it extremely reliable. The low power design results in less heat and, coupled with its compact size and MIL-SPEC ruggedness, makes it ideal for installing in locations that have limited space and are subject to harsh environments. The system includes a built-in test capability to ensure reliability.

The DAU achieves high performance by utilizing a 100% digital architecture to support a throughput of up to 64Mbps per unit, aggregating up to a gigabit per second throughput for a network distributed system. This mature architecture has remained stable for over a decade thanks to the future proof design philosophy. This eliminates the need to refresh a product line every few years, offers unequaled backwards compatibility and means there is a vast selection of modules available. The Acra KAM-500 range includes plug-in Ethernet switch modules that are perfect for applications where space is at an absolute premium or where only a few ports are required e.g. in a small network or remote location.

Plug-in Module Specification

Parameters KAM-500 Description
Battery voltage  KAD/ADC/130  4-channel ±200V D/E analog-to-digital converter
Cell voltage  KAD/ADC/132 24-channel ±200 V common mode voltage ladder  analog-to-digital converter
Temperature  KAD/TDC/109 16-channel A/D converter with excitation for use with AD590 sensors
Health & Usage  KAD/UTL/106  Battery usage and health monitor
Recorder  KAM/MEM/103  CompactFlash Memory
Video  KAD/VID/106  H.264 video encoder
Discrete  KAD/DSI/102  Discrete input (counters, time tagging)



Instrumenting an Electric Vertical Take Off and Landing Vehicle This case study describes how a manufacturer of an electric VTOL aircraft selected... MORE> A Monitoring Solution for Variable Frequency Power Generators Flight test engineers need a monitoring solution for variable frequency power... MORE> Measuring Techniques and Challenges of Moving to Variable Frequency Power This white paper describes the move from constant to variable frequency power... MORE> Networked from Ground to Air - ITC 2018 Demo This video gives an overview of the “Networked from Ground to Air” demo that... MORE> Integrated Data Acquisition Solutions for Aerospace Platforms with Highly Restrictive Space and Weight Requirements and Harsh Environmental Conditions Space and weight are key factors in designing, mounting and installing data... MORE> Axon and KAM 500 Demonstration Video The Axon is the newest and advanced data acquisition unit on the market. This... MORE> Extending an Aircraft’s Safe Lifetime Alan Murphy looks at the range of aircraft monitoring programs which can detect... MORE> Continued Airworthiness: Assuring a Lifetime of Safe Flight This white paper presents some of the challenges associated with managing... MORE> Axon Quick Start Kit: How to Get Started The Axon Quick Start Kit consists of fully qualified, released hardware and... MORE> Serial Implementations of Flight Termination Systems Paul Cook looks at how switching to a serial wiring approach on flight termination... MORE>
Connect With Curtiss-Wright Connect With Curtiss-Wright Connect With Curtiss-Wright


Contact our sales team today to learn more about our products and services.





Our support team can help answer your questions - contact us today.