초록 ▼

An automobile distance warning and alarm system (ADWAS) in which the warning system is armed when the vehicle exceeds a threshold speed. The vehicle speed is used, along with road or weather conditions, to determine a safe vehicle separation time and corresponding distance. A range finder then deter

An automobile distance warning and alarm system (ADWAS) in which the warning system is armed when the vehicle exceeds a threshold speed. The vehicle speed is used, along with road or weather conditions, to determine a safe vehicle separation time and corresponding distance. A range finder then determines the actual separation distance between the driver's vehicle and a forward or following vehicle. If the safe separation distance is not maintained for a selected dead time interval, the driver is alerted by an alarm, which may be both an audible and visual alarm. The driver of a following vehicle is also alerted by a rear indicator light.

대표청구항 ▼

An automobile distance warning and alarm system (ADWAS) in which the warning system is armed when the vehicle exceeds a threshold speed. The vehicle speed is used, along with road or weather conditions, to determine a safe vehicle separation time and corresponding distance. A range finder then deter

An automobile distance warning and alarm system (ADWAS) in which the warning system is armed when the vehicle exceeds a threshold speed. The vehicle speed is used, along with road or weather conditions, to determine a safe vehicle separation time and corresponding distance. A range finder then determines the actual separation distance between the driver's vehicle and a forward or following vehicle. If the safe separation distance is not maintained for a selected dead time interval, the driver is alerted by an alarm, which may be both an audible and visual alarm. The driver of a following vehicle is also alerted by a rear indicator light. 1. A method for isolating a signaling environment for power line communications, the signaling environment having power line data signals and power signals carried over common wiring, the method comprising: blocking the power line data signals on the common wiring including installing at least one filter on the common wiring for blocking the power line data signals, the at least one filter being located at an ingress/egress point of the common wiring for blocking power line data signals originating outside the signaling environment from entering the signaling environment and blocking the power line data signals originating inside the signaling environment from leaving the signaling environment; and allowing the power signals to continue on the common wiring. 2. The method of claim 1, wherein the power line data signals are at a higher frequency than the power signals, and wherein the at least one filter blocks the higher frequency power line data signals and allows the lower-frequency power signals to continue on the common wire. 3. The method of claim 2, wherein the at least one filter comprises at least one of: a low-pass filter; a bandpass filter; and a notch filter. 4. The method of claim 1, wherein the signaling environment includes a number of outlets coupled to a power source over the common wiring, and wherein installing the at least one filter on the common wiring for blocking the power line data signals comprises: installing the at least one filter between the power source and the outlets. 5. The method of claim 4, wherein installing the at least one filter between the power source and the number of outlets comprises: installing a circuit breaking including the at least one filter on the common wiring between the power source and the number of outlets. 6. The method of claim 4, wherein the number of outlets are coupled through a circuit breaker to the power source over the common wiring, and wherein installing the at least one filter between the power source and the number of outlets comprises: installing the at least one filter on the common wiring between the circuit breaker and the number of outlets. 7. The method of claim 1, wherein blocking the power line data signals on the common wiring comprises blocking power line data signals originating outside the signaling environment from entering the signaling environment, and wherein installing the at least one filter on the common wiring for blocking the power line data signals comprises installing the at least one filter at an ingress point of the common wiring for blocking the power line data signals originating outside the signaling environment from entering the signaling environment. 8. The method of claim 1, wherein blocking the power line data signals on the common wiring comprises blocking power line data signals originating inside the signaling environment from leaving the signaling environment, and wherein installing the at least one filter on the common wiring for blocking the power line data signals comprises installing the at least one filter at an egress point of the common wiring for blocking the power line data signals originating inside the signaling environment from leaving the signaling environment. 9. The method of claim 1, wherein the at least one filter comprises a single filter capable of blocking power line data signals originating outside the signaling environment from entering the signaling environment and blocking power line data signals originating inside the signaling environment from leaving the signaling environment. 10. The method of claim 1, wherein the at least one filter comprises: an ingress filter for blocking the power line data signals originating outside the signaling environment from entering the signaling environment; and an egress filter for blocking the power line data signals originating inside the signaling environment from leaving the signaling environment. 11. A power line communication