MOTORIST AID TRANSCEIVER. VOLUME 1
The report describes the analysis and preliminary design of a short-range motorist aid transceiver which would function as a wireless communication link between an automobile and a roadside callbox. Digital signalling would be the primary operating mode, with two-way simplex voice communication as a backup. Our analysis showed that a hand-held 5 milliwatt transceiver operating at approximately 450 MHz could provide the desired one-mile communication range. Circuit technologies such as inductorless injection-locked oscillators, surface acoustic wave filters and stripline filters were breadboarded and tested to show their potential for low-cost production. A CMOS logic demonstrator was designed and constructed; it provided eight selectable digital message, automatic transmitter identification, audible and visual acknowledgement, and dispatcher control of voice operation. Preliminary cost estimates showed that the transceiver could be produced in large quantities at a unit cost within the 60-dollar design goal. However, development work was discontinued because of the questionable cost effectiveness of the short-range transceiver concept. Emphasis during the remainder of the program was shifted to an analysis of the Citizens Radio Service for motorist aid and emergencies.
- See also volume 2, PB-264 432.
Honeywell, IncorporatedSystems Research Center, 2600 Ridgeway Parkway
Minneapolis, MN USA 55413
Washington, DC USA 20590
- Koehler, L E
- Berg, R O
- Gardner, J A
- Summers, R
- Publication Date: 1976-3
- Pagination: 131 p.
- TRT Terms: Acoustics; Call boxes (Driver aid devices); Citizen band radio; Cost effectiveness; Cost estimating; Digital computers; Drivers; Emergencies; Estimates; Highways; Motorist aid systems; Pulse modulation; Radio; Radio receivers; Radio transmitters; Safety; Signal generators; Signaling; Speech; Systems analysis; Transceivers; Ultrahigh frequency; Voice communication
- Uncontrolled Terms: Digital techniques
- Old TRIS Terms: Call boxes; Digital systems; Oscillators; Pulse communication; Ultrahigh frequencies
- Subject Areas: Highways; Safety and Human Factors;
- Accession Number: 00151780
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: FHWA-RD-76-122 Final Rpt., 76-SRC/7, FCP 32L3-012
- Contract Numbers: DOT-FH-11-8483
- Files: NTIS, TRIS, USDOT
- Created Date: Apr 27 1977 12:00AM