Bolton Engineering Project Notes

 

Project Files


- Ambient Dashboard
- Bicycle Power Meter
- Faxview Handheld Fax Machine
- Force Feedback Joystick
- Force Feedback Joystick Controller
- Personal Relaxation Device
- CO-Smoke Detector
- PCI Motion Control Interface
- Phased Array Microphone
- Sports Medicine Testing and Rehabilitation Systems
- Production Test System for Zeo Personal Sleep Coach
- Obsolete Chip Replacement-Quadrature Encoder
- Mil Std Wide Input Range Multi-Phase Power Supply
- Acquisition Engine for Hand-held X-Ray Spectrometer
- RedXDefense iModule
- Dual Floating Point DSP and FPGA Board for Software Radio
- DVI Video Development Board
- Brushless DC Motor Driver Retrofit
- Dual Channel High Speed A/D Board for Software Radio- Fingerprint ID System
- 128 Line Phone Switch
- Wastewater Sludge Detector
- PCI 4DI Imaging System
- Lottery Ticket Vending Machine
- Molecular Characterization Detector
- Tera Ohm Meter
- Pharmaceutical Vending Machine
- Blackfin Stamplet Board
- Board Tester
- RF Power Amplifier Predistortion Engine
- Thermal Imaging Camera
- DSP-Based Software Radio
- Steganographic Audio Processor
- Canoe Controller for the Handicapped
- MIT Daedalus Aircraft
- Display Reader for the Blind
- Molecular Characterization Detector
- Micro Ohm Meter
- Tera Ohm Meter
- Lung Impedance Analyzer
- Personal Relaxation Device
- Pharmaceutical Vending Machine
- TCP/IP Engine
- Laser Diode Driver
- Laser System Speed Sensor
- Medical Image Processor
- Miniature USB Camera
- Sine Wave Generator
- Touch Panel and Display Interface
- BigDog Rough-Terrain Quadruped Robot Control Board
- Black-I Landshark Ground Vehicle Robot- Bi-Pedal Research Robot
- Force Feedback Joystick
- Force Feedback Joystick Controller
- Canoe Controller for the Handicapped
- LittleDog Robot
- PCI Motion Control Interface
- Dual Floating Point DSP and FPGA Board for Software Radio
- Acquisition Engine for Hand-held X-Ray Spectrometer
- TCP/IP Engine
- Thermal Imaging Camera
- Laser System Speed Sensor
- Medical Image Processor
- Phased Array Microphone
- RF Power Amplifier Predistortion Engine
- DSP-Based Software Radio
- Blackfin Stamplet Board

Industrial & Commercial Projects

Sports Medicine Testing and Rehabilitation Systems

Bolton Engineering designed the original retrofit electronics to work with Humac and Norm machines, and, several years later, designed add-on boards to allow the same electronics to operate with Biodex II and Biodex III systems. The original system boards were built in the late 1980’s and early 1990’s using discrete TTL and PAL logic. Each system had as many as 5 boards with a system total of more than 300 IC’s. Bolton Engineering studied the original documentation and reversed engineered the critical design sections. Most of the logic was placed in a medium-size FPGA (Field Programmable Logic Array). The final system fit on a single 6” x 10” circuit board with fewer than 50 ICs.

Production Test System for Zeo Personal Sleep Coach

Zeo was finalizing their design and was in the process of moving production to China. They had started work on creating a flexible production test system and had written a test specification, but did not have the available design resources to complete the work. Zeo turned to Bolton Engineering to design the Production Test System.

Obsolete Chip Replacement - Quadrature Encoder

The client had been producing the Blood Analysis System for only five years. The design had used a motor control board from another piece of equipment, though, which was of much older vintage. The client realized that a quadrature encoder interface IC on the board had recently gone obsolete, but was confident that a new “direct substitute” from the same IC manufacturer would provide equivalent operation. Although the new IC worked almost identically to the original IC, one minor function operated differently, and none of the boards worked. Production was halted and Bolton Engineering was called in to examine the design and make recommendations.

Mil Std 1275D Wide Input Range Multi-Phase Power Supply

This highly efficient Power Supply provides low-noise power over a wide range of input voltages and output load conditions. The system is designed and tested to meet the stringent Military Standard 1275D transient and noise requirements for 28V military ground vehicles. The system is designed to operate down to 11V for use in standard civilian vehicles.

Acquisition Engine for Hand-held X-Ray Spectrometer

The Innov-X Acquisition Engine had interfaced to the iPaq PDAs using a serial interface, but suddenly HP had announced that new models would replace the serial ports with USB ports. Innov-X turned to Bolton Engineering to rapidly produce a new design that was form-compatible with their original board, but would incorporate a high speed (480Mbps) USB port. In addition, Innov-X wanted to add an interface to a VGA-size CMOS camera module to allow future products to store a picture when taking a sample.

RedXDefense iModule

RedXDefense produces the XPAK, a portable trace explosives detection system. The iModule adds the capability to log and map sampling locations. The iModule was designed under intense time pressure, with 60 production units delivered to the client within 6 weeks after the start of the project. An additional 40 units were delivered less than three weeks later.

Dual Floating Point DSP and FPGA Board for Software Radio

his DSP Board operates as a programmable wide-band software radio. The DSPs perform console and management functions, while the client-designed FPGA (Field Programmable Gate Array) DSP engine processes and manages the high speed data path and converts it to baseband. This 22-layer circuit board has almost 2000 components and over 400 high speed tracks with critical length and cross-talk routing requirements.

DVI Video Development Board

The Client was working on a laser projection system and needed a flexible controller board to accept a variety of video formats. Internal staff and consultants had done most of the work, but were running short of time to get the job built. The company brought a mostly complete set of schematics to Bolton Engineering, and Bolton Engineering finished off the design, created the circuit board layout, and built prototype boards.

Brushless DC Motor Driver Retrofit for Hemostatis Testing System

The client had been producing the Hemostatis Testing System for over ten years. It had acquired the product line from another firm and did not have in-house design staff to make changes to the design. The client had known that the brushless 3-Phase DC motor drive integrated circuit (UC3620) was no longer produced, but had been reluctant to make changes to the design as they were planning to replace the product with a completely new design. They were manufacturing a new run of equipment, but had run into difficulties finding chips. Production was stopped until the design could be patched to run with different brushless DC motor drivers.

128 Line High-Reliability Phone Switch

Subscriber Solutions had won a Bureau of Prisons contract to deliver a high reliability modular PBX system and had eighteen months in which to deliver a fully working system. Bolton Engineering worked closely with Subscriber Solutions to create a detailed system specification so that the many subsystems could be designed and tested in parallel. Boards were designed to be removed from or inserted into the system while the power was running without losing ongoing calls ("hot swapped"). Redundant TDM (Time Division Multiplex) highways and control busses were implemented to ensure that single-point failures did not stop other system elements from working.

Fingerprint ID System

Bolton Engineering, Inc. had designed the client’s first generation Fingerprint ID System using a quad-processor DSP. The client wanted to move to a less expensive dual-processor DSP, increase fingerprint template capacity and add I/O. The unit had to fit into the same case with similar power requirements.

128 Line High-Reliability Phone Switch

Subscriber Solutions had won a Bureau of Prisons contract to deliver a high reliability modular PBX system and had eighteen months in which to deliver a fully working system. Bolton Engineering worked closely with Subscriber Solutions to create a detailed system specification so that the many subsystems could be designed and tested in parallel. Boards were designed to be removed from or inserted into the system while the power was running without losing ongoing calls ("hot swapped"). Redundant TDM (Time Division Multiplex) highways and control busses were implemented to ensure that single-point failures did not stop other system elements from working.

Wastewater Sludge Detector

A wastewater treatment facility needed to detect the interface between sludge and decanted water. The facility previously had needed to replace their standard off-the-shelf optical detectors every few months; the existing optical detectors operated off of fixed density thresholds and gave false readings as their components aged.

PCI 4DI Imaging System

The Intelligent Automation Systems 4DI Imager is a non-contact gauging system that creates a three-dimensional wire frame model of an object under inspection. The system shines a series of laser-generated lines on an object and measures the line locations using three CCD cameras. The 4DI Imager board detects the laser line locations in the images and outputs a series of points. A PC-resident application package displays a wire frame image and performs image analysis functions.

Lottery Ticket Vending Machine

Bolton Engineering had designed the client's first generation instant ticket vending machine. Although the machine had proven highly reliable with over two-and-a-half million total hours of operation over three years without hardware or software failures, it was not versatile enough to meet the needs of the increasingly sophisticated Lottery Commissions.

Molecular Characterization Detector

The Precision Detectors PD2000 family of molecular characterization detectors measures absolute values of molecular weights, sizes, and shapes. Typical applications are polymers, proteins, antibodies, polysacchrides and other macromolecules used in the plastics, biotechnology, pharmaceutical and food industries. The PD2000 series is available in single angle, dual angle and high temperature versions with or without dynamic light scattering (DLS) capabilities. The high performance cell design provides exceptionally accurate measurements for a broad range of molecules from less than 1000 daltons up to 106 daltons for most samples, and to 107 daltons for certain proteins and polymers.

Tera Ohm Meter

A client had been manufacturing various versions of this instrument for over 20 years. The design in production had been designed several years before, but still incorporated manual wiring, with critical components soldered directly to switches to minimize parasitic electrical leakage. The client produced two similar instruments, but the electronics for each was unique.

Pharmaceutical Vending Machine

Telepharmacy Solutions, Inc. is a leading provider of e-commerce solutions to the outpatient care market. TSI’s products allow medication to be legally remotely dispensed to patients. Other TSI products provide medication access control at hospitals.

Blackfin Stamplet Board

Bolton Engineering was working on several Digital Signal Processing (DSP) projects and needed a miniature development board that could be used to jump-start software development. Two of the projects needed to run Linux, and also required significant programmable logic content. Using the Analog Devices Blackfin Stamp board as a starting point, Bolton Engineering designed the Blackfin Stamplet.

Board Tester

Bolton Engineering had designed the electronics for the SensAble Technologies OMNI Haptic Device. The system was a complex mixed-signal design with sensor interfaces, digital electronics and high power Pulse Width Modulated (PWM) amplifiers. Bolton Engineering built a custom test station to allow the product to functionally and parametrically test itself

RF Power Amplifier Predistortion Engine

This unique product uses a hardware/software model to calculate a predistortion signal to cancel out the distortion introduced by an RF power amplifier. This unique system incorporates a high speed TigerSHARC floating point Digital Signal Processor (DSP) plus a client-designed Programmable Logic Device (PLD) computational engine that work in unison to calculate a predistortion signal to cancel out the distortion introduced by the RF power amplifier.

Thermal Imaging Camera

Redshift Systems had developed a radical new technology that greatly reduced the cost of manufacturing Thermal Imaging Cameras (TICs). TICs are used in surveillance, and by emergency response personnel to identify people and doors in smoke filled buildings. Bolton Engineering developed a miniature Digital Signal Processor (DSP) board based on the Analog Devices Blackfin that incorporated all video capture and display electronics.

DSP-Based Software Radio

A client was developing a software radio for base station use. They had done all the system calculations to determine how the signal path should operate, and what kind of signal processing they required. They had excellent in-house expertise for the RF design, but did not have sufficient in-house experience to do the digital design. Bolton Engineering designed the system using an Analog Devices Blackfin Digital Signal Processor (DSP)

Steganographic Audio Processor

A client was investigating the practicality of embedding Steganographic (i.e., hidden) signals in television programs and advertisements. These signals would be part of the audio stream and would trigger bonus points in a small handheld giveaway device. The client hired Bolton Engineering to develop a small credit card-sized battery powered device for a limited marketing test of the concept. In under four weeks, Bolton Engineering delivered fully working, debugged boards and driver code.

   
Bolton Engineering, Inc. | 2 Connector Road | Andover, MA 01810
Tel: 978.474.0600