UH-1N Health & Usage Monitoring System

The UEI-HUMS1 is a powerful Health and Usage Monitoring systems based on UEI’s COTS UEIPAC 800-MIL 8-slot I/O chassis. Theunit includes 8 I/O boards selected specifically to match the UH-1Napplication. The specific I/O boards included in the UEI-HUMS1are:

• Slot 1 -- DNR-DIO-449, 48 channel 0-150V digital input board
• Slot 2 -- DNR-AI-255, 2 channel synchro/resolver board
• Slot 3 -- DNR-AI-228-300, 16 channel, isolated 300V analog input board
• Slot 4 -- DNR-AI-255, 2 channel synchro/resolver board
• Slot 5 -- DNR-429-566, 12 channel ARINC-429 interface
• Slot 6 -- DNR-AI-255, 2 channel synchro/resolver board
• Slot 7 -- DNR-AI-248-230, 24 channel A/D board
• Slot 8 -- DNR-VR-608, 8 channel rotational speed board

All the required software for the above boards is included with theUEI-HUMS1 and it’s Linux operating system. The unit has been tested to MIL-STD-810 as well as DO-160. It has also been designedto meet the most commonly required elements of MIL-STD-461,-704 and -1275 and is sealed to at least IP66/NEMA6 standards.All this is housed in a compact 17.5” x 8.125” x 7” chassis, weighing less than 20 pounds and typically consuming less than 40Watts. In addition, no rotary cooling fans are used in the designwhich maximizes MTBF and mechanical reliability. All internalprinted circuit boards are conformal coated to ensure the highest reliability.

The UEIPAC 1200-MIL chassis on which the UEI-HUMS1 is based isthe latest deployment of UEI’s popular DNR-MIL RACKtangle® architecture. However, the UEI-HUMS1 is based on a smaller versionthat includes 8 slots instead of the UEIPAC 1200’s 12 slots. Thesmaller size allows the UEI-HUMS1 to be mounted under the UH-1N’s floor without interfering with the various control rods thatextend through the area.

Though the original RACKtangles are quite rugged, the DNR-MIL series takes ruggedness to the extreme. Designed for use inthe toughest environments, the new chassis is an ideal solutionfor military and aerospace deployments. The form factor is alsoideal for a huge assortment of commercial applications including use on oil drilling platforms and refineries, heavy machinery,shipboard control, outdoor test stands and any other I/O application that will be exposed to the elements. All connectivity isthrough ROHS compliant 38999 connectors.

Electronically, the DNR-MIL series is identical to the standardDNR Series RACKtangle except for hold-up and protection circuitry added to the power supply inputs. (This power supplyconditioning is required in order to meet MIL-STD-1275.) Thismeans the DNR-MIL uses our standard DNR-series board (e.g.DNR-AI-217 or DNR-1553-553).

When deployed the UEI-HUMS1 runs an application on a Linuxoperating system. This allows unit to both run stand alone control operations as well as run as part of a SCADA systemcontrolled and/or monitored by an external host computer. TheLinux application in conjunction with the unit’s dual Ethernetports allows the link to the host PC to be implemented in a fullyredundant network. This software is 100% customizable by the customer.

The DNR-MIL platform is 100% COTS, made in the USA and supported by UEI’s family of over 85 compatible analog, digital andinterface I/O boards, including analog inputs up to 24-bits, thermocouples, RTDs, ICP/IEPE, ARINC-429/453/708, MIL-STD-1553,CAN, RVDT/LVDT, synchro/resolver, RS-232/422/485, straingauge, quadrature encoder, high-voltage analog outputs (up to115 VDC) with high drive analog output (up to 200 mA), functiongenerator outputs and more.

Whether your application is on a ship/boat, in an aircraft, in arocket, on an outdoor test cell, on an oil platform or simply going to be left outside and exposed to the elements, the chassis onwhich the UEI-HUMS1 is based is an ideal solution. Of course ifyou need fewer I/O, you should consider the 4-slot 4.45” x 6.75” x7.35” DNA-MIL Cube which offers many of the same features andoptions, but offers slots for up to 4 I/O boards in a much smallerchassis.