Green Technology

Multiplexing (Muxing) is an operation that selects one of many electrical signals and forwards the input into a single line. Demultiplexing (Demuxing) does the same operation, but in reverse, taking one electrical signal and outputting it onto one of many different wires depending on a selection. Muxing is an effective and relatively inexpensive wiring strategy that could reduce your circuit complexity and save you money. DMC has helped to implement muxing schemes on multiple projects and has witnessed...

DMC leveraged our established Battery Management System (BMS) Testing Platform to deliver an automated Battery Simulator System to a NASA research group. NASA needed this system to facilitate development of highly specialized battery devices. These battery systems were designed to provide mobile power for advanced electromechanical systems such as Robonaut 2, a dexterous humanoid robot created to perform a wide range of tasks to assist astronauts on the International Space Station. The Battery Simulator...

DMC designed, built, and programmed a set of automated test stands for charging and discharging electric vehicle battery packs. The test stands also monitor the performance of these battery packs while exposed to harsh environmental conditions for extended timeframes. To provide the necessary testing bandwidth and flexibility required by the customer, DMC's solution included five test stands designed to test a single battery pack, and two test stands designed to test up to six battery packs at...

DMC utilized the DMC Battery Test Platform to develop a Test Control Panel software application to perform automated testing of the Battery Control Unit (BCU) for a Client's automotive lithium ion battery pack. This test system allowed the Client to instate an efficient process for evaluating the operating state of the Battery Control Units in battery packs returned under warranty claims, and thereby greatly reduced the cost of servicing these warranty claims.

DMC utilized the DMC Battery Test Platform to develop a Test Control Panel software application to perform automated testing of a Client's automotive lithium ion battery packs. This test system allowed the Client to instate an efficient process for evaluating the operating state of battery packs returned under warranty claims, and thereby greatly reduced the cost of servicing these warranty claims.

DMC delivered a low cost, high density Relay Multiplexer Module for a high channel count test application for a client in the performance racing automotive sector.  DMC provided the client with multiple methods for controlling and operating the device, including a soft front panel interface, a library of LabVIEW drivers, and a DLL package of .NET drivers.

DMC was approached by an engine design and development company to create a method of characterizing fuel injectors for research and product development. A critical part of fuel injector performance is accurate timing of the control signals for opening and closing the fuel delivery valve. In this case, injectors are characterized for optimal control timing. Characterization for research and development is performed on a lab benchtop, and this technique would be ultimately required in full production....

As one component of a Client's complete test system solution, DMC was required to design and assemble a 50 channel temperature sensor simulator.  The resulting system is capable of simulating a collection of thermistor-based temperature sensors with 8-bit precision and 1% accuracy with 600V isolation between channels.

DMC created an automated bicycle clutch testing platform for a high-end specialty bicycle company.  The system performs fully automated endurance, fatigue, and lifecycle testing of a new clutch design by simulating real-world bicycle riding cycles.  The specialty clutch being tested was designed for use in the World Bike, an innovative prototype bicycle for providing a robust and efficient means of transportation for poor rural communities around the globe. 

DMC developed a multi-station power measurement and performance testing system for a high-end industrial lighting company. The final system enables the client to conduct multiple tests at once, with each test station completely independent and configurable.

DMC developed a set of J1939 protocol drivers for LabVIEW which are based on the NI-CAN channel API provided by National Instruments (NI).  DMC needed to interface to a customer's automotive ECU over CAN using the SAE J1939 protocol as part of an automated test application.  Since the application was written in LabVIEW and the test station used NI-CAN hardware, the drivers were entirely written in NI LabVIEW.  The drivers provide functions at a layer above...

DMC designed and developed a relay-based multiplexing system for a Client's large-channel-count data acquisition system. For this project DMC was required to produce a reliable, yet low-cost, system to make current and voltage measurements using a high accuracy Digital Multi-Meter (DMM) on over 200 signal lines with 1kV isolation.

An international partner requested a small scale Battery Management System (BMS) Test Station for demonstrating the basic battery simulation functions of a much larger test system. DMC responded by building a Demo Test Station that is easily transportable while still fully capable of simulating all the input signals (voltage, current, temperature) to a 6-cell battery pack BMS.

 A battery stack simulator for hardware-in-the-loop (HiL) test systems is being produced by DMC to augment the capabilites of battery management systems (BMS) HiL test systems.  This system leverages DMC's vast hardware and software experience in Electric Vehicle (EV, HEV, PHEV) Battery Pack and BMS Testing.

DMC built upon its previous Battery Test Platform design experience to produce a completely automated test system specifically designed for Battery Management System (BMS) validation, verification, environmental, and Hardware in the loop (HWIL/HIL) testing. Numerous new features and functionalities were implemented in this second generation version of DMC's BMS Test Stand to meet the customer's latest testing requirements. To fully evaluate a BMS, the first challenge is to simulate all...