Battery backup for vehicle emergency communicator
First Claim
1. A battery backup for a vehicle emergency communicator, comprising:
- a backup battery;
at least one diode adapted for connection between a main vehicle battery and the backup battery, the at least one diode allowing the backup battery to be charged when the main vehicle battery is operational, the at least one diode isolating power from the backup battery when the main vehicle battery is non-operational, the backup battery selectively being the only source of power connected to the vehicle emergency communicator.
2 Assignments
0 Petitions
Accused Products
Abstract
The battery backup for vehicle emergency communicator includes mechanisms for applying backup battery power to an emergency communicator. Electrically operated relays may be employed to switch the backup battery in order to power the emergency communicator of a telematics device. When relays are used in the system, failure of the car battery causes normally open relay contacts to close, applying backup battery power to the emergency communications device. Normally closed relay contacts open to remove connection of the failed battery to the emergency communications device. Additional features of the battery backup for vehicle emergency communicator may include a battery charger, an uninterruptible power system (UPS), transistor switches, an emergency contact dialer, and a timer that limits application time of the backup battery.
-
Citations
11 Claims
-
1. A battery backup for a vehicle emergency communicator, comprising:
-
a backup battery; at least one diode adapted for connection between a main vehicle battery and the backup battery, the at least one diode allowing the backup battery to be charged when the main vehicle battery is operational, the at least one diode isolating power from the backup battery when the main vehicle battery is non-operational, the backup battery selectively being the only source of power connected to the vehicle emergency communicator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A battery backup for an vehicle emergency communicator, comprising:
-
first, second and third transistor switching circuits, the first transistor switching circuit being connected to the second transistor switching circuit, the first transistor switching circuit being adapted for connection to a main battery of the vehicle, the first transistor switching circuit controlling the second transistor switching circuit responsive to a voltage level of the main battery; an RC timing circuit interconnecting the second transistor switching circuit and the third transistor switching circuit; a playback device having dialing instructions and voice information stored therein, the playback device including a speaker, the speaker being adapted for placement in close proximity to a microphone of the vehicle emergency communicator; a first relay connected to the second transistor switching circuit, the second transistor switching circuit being configured for energizing the first relay when power from the main battery is lost, the first relay having contacts activating the playback device when the first relay is energized, and also activating a pushbutton of the vehicle emergency communicator, the dialing and voice instructions being transmitted to the microphone of the vehicle emergency communicator through the speaker; and a second relay connected to the third transistor switching circuit, the third transistor switching circuit being configured for energizing the second relay after a time delay determined by the RC timing circuit, the second relay de-energizing the first relay after elapse of the time delay, thereby turning off the playback device and de-activating the pushbutton of the vehicle emergency communicator.
-
Specification