Date post: | 03-Jan-2016 |
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Computers in Police Cruisers
Article in Pervasive Computing FIRST RESPONSE
Authors: Andrew L. Kun, W. Thomas Miller III, and William H. Lenharth
ECE in University of New Hampshire
Presenter: Steve
Outline
• Motivation
• System Overview
• Hardware Integration
• Software Architecture
• Paper evaluation
Motivation
• A typical police cruiser is full of displays and input devices, all competing for the officer’s attention (EX: radar display unit on top of the dashboard)
• Hardware and software integration standards don’t exist for the in-car electronic devices police agencies use– Limiting usefulness, waste integration effort
Project54
• Using only two interfaces for all devices in the car– Speech User Interface (SUI) <- primary to all
devices, but may not the best interface for all
– Graphic User Interface (GUI)
Hardware Integration
• Using IDB (Intelligent Transportation System Data Bus protocol) to transmit data between devices
• Create CIDBI (Common IDB Interface) hardware– RS-232– TTL (transistor-transistor logic)– Customize the CIDBI for devices interface
other than above two
Software Architecture
• Using Microsoft’s Component Object Model (COM) to implement messaging between the objects
• Each object exports one or more interfaces, and some are required interface– Ex: All applications have to export the I_MsgH
andler interface
Field-test results
• Hardware proved robust– No significant difference in radio reception
• Officers are satisfied with the Speech Recognition accuracy, but the system occasionally failed to recognize– Push button Timing, invalid grammar– Need preliminary training, or natural-language
processing capability
Paper evaluation
• It may useful for other types of vehicles by reducing the interfaces to two– In iCare, it may not necessary to reduce the interface
• System Integration for multiple devices and applications– If there already exited a common standard (both hard
ware and software) for every component, it’s not the matter