Custom Designed Electronic Engineering
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Project management, software and firmware develoment, testing and quality assurance, electronic engineering
engineering experience, remote control systems, pc software, military electronics
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For a PDF version of this information, please view LP_Experience.PDF.
Electronic engineering, software engineering, engineering development
Electronic engineering design firm

 

"Without the expertise provided by Logic Plus, we could never have done it"....

Ken Heinmann, Lead Engineer Mattel


Competitive Advantages

  • Experience and expertise with low level firmware
  • Experience in various industries allowing us to bring fresh and innovative ideas to each project
  • Familiarity working as a sub to a primary military contractor
  • Familiarity and experience with many systems - allowing for "cross pollination"
  • Multi-skilled staff: hardware, firmware, software, and mechanical engineering
  • Experience with both design and integration of systems

Summary

  • Remote Control Systems / Robotics
  • Consumer Product Electronics
  • Unmanned / RC Vehicles for: Air, land, amphibious, hover, water, and underwater
  • Remote Monitoring and Control
  • Electronic Toys (Educational, Entertainment)
  • Communication Protocols: USB, RS232, GPIB
  • Test Data Processing
  • Military Electronics
  • Technology Research
  • Medical Devices
  • PC software

Reconnaissance Blimps

(work completed by Logic Plus, detailed according to system)

Primary Control

  • Developed control panels for user interface
  • Integrated autopilot's user interface
  • Integrated L-Band microwave communication system
  • Integrated autopilot
  • Developed control electronics
  • Integrated actuators
  • Integrated power supplies
Backup control
  • Developed control panels for user interface
  • Integrated P-Band radio communication system
  • Developed control electronics; including fail-safe smart switching between primary and backup control using data error rates
  • Integrated actuators
  • Developed power supplies
Flight Termination
  • Developed control panels for user interface
  • Integrated P-Band radio communication system
  • Developed control electronics
  • Integrated actuators
  • Developed power supplies
Primary Telemetry
  • Integrated video and computer displays
  • Developed telemetry display and logging software
  • Integrated L-Band microwave communication system
  • Developed multi-camera video system with pan and tilt
  • Developed primary sensors and data acquisition electronics
  • Integrated autopilot telemetry
Backup Telemetry
  • Integrated backup data and audio monitors
  • Integrated P-Band radio communication system
  • Developed backup sensors and data acquisition electronics, included electrical system voltage, magnetic heading, air pressure altimeter, and backup data text via video link simultaneous with data on P-Band telemetry link
Ground Station
  • Developed power system for charging and testing airship while moored
  • Integrated all primary, backup and flight termination systems into a single rack mount S-280 shelter ground control station
  • L-Band system included integrating short range omni-directional and long-range (100 km) autotracking dish antennas
  • P-Band system included integrating manual remote control of high-gain Yagi antennas
Portable Control Station
  • Integrated all backup and flight termination systems into a portable control station
  • P-Band system included integrating omni-directional antennas
Actuators
  • Flight Controls: Rudder, elevator, thrust-vector, and recovery rope servos
  • Twin Engines: Carb heat servos, choke servos, throttle servos, magneto disable switches, starter, and fuel pumps
  • Remote Lighting Control: Nav, strobe, fin, and envelope
  • Water Pumps: Main and flight termination
  • Fuel Dump Valves: Main and flight termination
  • Video: pan and tilt servos, camera selectors
  • Other: Flight termination hotwire, primary transceiver power, backup transmitter enable, payload enable, transponder
Sensors
  • Engine: RPM, cylinder head temp, exhaust gas temperature, oil pressure, main fuel tank level, surge tank, and fuel flow (2)
  • Video cameras
  • Microphone
  • Air speed
  • Electrical System Monitoring; voltage and current: reserve bus, reserve bus charging, non-vital power bus, vital power bus, alternators, and main battery
  • Signal strength for L & P Bands for both primary and backup telemetry
  • Flight termination system status
  • Avionics bay temperature
Payload
  • Provided power and ensured electromagnetic compatibility
  • Payload included: FLIR, high resolution video, and advanced radar
  • Assisted Payload Contractor with integration and testing on airship
Pressure Controller (designed and manufactured)
  • Air temperature sensor
  • Ballonet blower control, included soft-start motor control to extend operation in low battery conditions
  • Helium dump valve
  • Helium dump valve status
  • Communications with primary telemetry
  • Control input from primary, backup and flight termination
  • Temperature compensated Helium and ballonet pressure sensing
  • User interface for calibration
  • Calibration and pre-flight user set points
Power System
  • Control Stations: developed with multiple power sources and backups to maximize reliability
  • Airship
    • Developed with multiple parallel power sources to maximize reliability and isolate potential single point failures
    • Distributed power supplies were used to minimize single point failures
    • Electrical system was designed around a single point ground design philosophy to maximize electrical compatibility between sub-systems

Medical Devices

Cosmetic Surgery Devices
  • Modification to existing design: identified design error in production models and made corrections
  • Modified existing power supply for use in Europe
Eye Surgery Device
  • General design of embedded systems
  • General design of motor control
  • Designed communication protocols for extremely high reliability
  • Developed design documentation
  • Developed large portions of the document control system
Drug Infusion Pump
  • Hardware and Firmware development
  • Motor control
  • User interface
  • Test fixtures
  • Development tools
  • Development done within existing documentation standards and document control systems

Electronic Consumer Devices

(Logic Plus has completed over 30 electronic consumer device projects. For a majority of projects, Logic Plus designed the entire systems. For brevity, experience is listed by category instead of by project.)

Motion Control

  • High resolution close-loop position control
  • Discrete point close-loop position control
  • Close-loop speed control
  • Limited feedback speed and position control
  • Open-loop speed control
  • Multi-horsepower DC motor control
Communications
  • Custom IR protocols; including error detection and anti-collision features
  • Standard IR protocols
  • Touch tone dialing
  • Timex Data Link
  • RF data communications
  • Reverse engineering of complex, proprietary error-detection and bandwidth-limiting coding
  • RFID tags
  • Proprietary inter-microcontroller serial and parallel interfaces, both master-slave and peer-to-peer
  • Standard inter-processor serial and parallel interfaces
User Interface
  • Voice recognition
    • Speaker independent
    • Speaker dependent
    • Speaker identification
  • GUI: Developed PC applications
  • LCD
    • Custom multi-segment
    • Custom dot-matrix
    • Standard LCD modules
  • Push buttons
  • Encoders
Audio
  • Voice playback
  • Concatenation
  • Multi-voice music synthesis
  • Compression and decompression (multiple types)
  • Formats: PCM, ADPCM, µ-LAW, CELP and multiple proprietary aggressive compression formats
Project Support (our methodology)
  • Project Management
    • Requirements documentation
    • Project definition
    • GANTT charts
    • Project planning
    • Resource scheduling
    • Interfacing with manufacturing
    • Coordination of multiple teams
    • Balance of cost, quality, and schedule
  • Quality Control
    • Requirements based testing
    • Independent evaluation and verification
    • Accepted standards and procedures
    • Peer reviews
  • Manufacturability
    • Designed for manufacturability
    • Self test
    • Cost minimization
    • Component selection based on available supplies
  • Development tools
    • Test fixtures
    • Custom script engine
    • Numerous audio-file data bases
    • Audio tools

Consumer Video Device

(Work specific to the video needs of the device is listed below; other engineering tasks are included in the list above.)

Video

  • Image acquisition
  • Scaling
  • Video encoder output
High Speed Digital Design
  • FPGA
  • Verilog
  • SDRAM
  • Multiple microcontroller interfaces
Real-Time Image Processing
  • Blue screening
  • Exposure
  • Multiple special effects


For more information on Logic Plus' experience, please contact us at (805) 545-9562 x105.