Below are two
of projects BRIDGEKEY has developed.
Example #1 - Qualitrol 509 Temperature
The Qualitrol's 509 Transformer Temperature Monitor provides a complete
power transformer monitoring function. It combines microprocessor
technology, advanced digital signal processing, analog signal
conditioning, communications, and power supply designs.
Bridgekey developed the 509 hardware, BIOS software, and the PC based
support applications for remote operation, configuration and testing.
The 509 is a highly modular system providing:
- Up to 8 input signal
- 10 different types of
input modules are available
- 4 analog output current
loops can be configured for two different ranges
- 10 output control relays
can be configured for a variety of cooling and alarm schemes.
509 is connected into a SCADA system using several different
communications protocols and signaling systems and is powered by an
on-board universal power switching power supply. The hardware is based
on Hitachi H8 high integration microprocessor. The Flash stored
software is in-system programmable.
The system software consists of a BIOS layer providing a well defined
interface between the transformer application code and the hardware. PC
based applications provide for remote operation of the 509.
Configuration of the system at the factory, based on customer purchased
options, is accomplished with a PC based configuration application.
System-wide diagnostics can be used to service the 509 in the field.
Bridgekey has extensive experience with the design and manufacture of
portable, battery powered, consumer electronic products. Specifically,
we have experience with hand-held electronic information devices, such
as electronic language translators, organizers, and electronic
These products contain low power embedded processors, masked ROMs, very
low power RAMS, custom LCD displays, keyboards, battery systems, and
The software combines the user interface, data base access, data
decompression, and application specific tasks. The software is tightly
coupled with the hardware resulting in an optimal product design in
terms of cost and performance.
Example #2 - IdeaFisher Handheld
IdeaFisher Systems, Inc. has developed and patented a
unique and innovative brainstorming tool designed to help you think
creatively. The product is recommended for writers, designers,
advertising executives. entrepreneurs, engineers, inventors and
Bridgekey, under a contract from Seiko Instruments, Inc., developed a
hand held version of this popular PC program for IdeaFisher. The
hardware design utilizes a very high integration Epson processor
coupled with LCD expansion companion IC, low power RAM, non-volatile
EEROM, and a large masked ROM.
The software for this product, written in C and assembly code, included:
- development of user
paradigm consistent with the PC program model
- development of a simulator
- implementation of user
- data base compression
- hardware BIOS.
The product has four
modules that can be purchased on a custom Internet web site. A system
of encryption, tags and keys is used to lock and unlock individual