Vehicular charger
First Claim
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1. A vehicular battery operated charger for charging a battery operated radio having a battery and the vehicular battery having a voltage level, the vehicular battery operated charger comprising;
- vehicular battery monitoring means for monitoring the voltage level of the vehicular battery;
control means responsive to said vehicular battery monitoring means, the control means including a storage means for storing first and second threshold voltage levels, the control means further including a comparison means for comparing the vehicular battery voltage level to the first and second threshold voltage levels stored in the storage means and producing a first control signal when the vehicular battery voltage level drops below the first threshold voltage level;
charging means responsive to the control means for charging the radio battery;
cut-off means responsive to the control means for automatically discontinuing the charging of the radio battery when the first control signal is produced by the control means;
annunciator means responsive to the comparison means for annunciating a low battery condition when the vehicular battery voltage level drops below the first threshold level;
electronic device monitoring means coupled to the control means for monitoring the voltage level of the radio battery; and
the comparison means compares the radio battery voltage level to an electronic device voltage threshold level which is stored in the storage means, the control means producing a second control signal when the radio battery voltage level is below the electronic device voltage threshold level, and the control means sends a signal to the radio instructing the radio to transmit a low voltage alert signal when the vehicular battery voltage level falls below the second threshold voltage level.
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Abstract
A vehicular battery operated charger (202) for charging an electronic device such as a radio (204) includes a controller (218). Controller (218) determines the battery voltage of the vehicles battery (222) and compares it to a threshold level stored in controller (218). Charger (202) will automatically charge radio battery (206) as long as the voltage level of the vehicles battery (222) does not drop below the threshold level stored in controller (218).
108 Citations
10 Claims
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1. A vehicular battery operated charger for charging a battery operated radio having a battery and the vehicular battery having a voltage level, the vehicular battery operated charger comprising;
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vehicular battery monitoring means for monitoring the voltage level of the vehicular battery; control means responsive to said vehicular battery monitoring means, the control means including a storage means for storing first and second threshold voltage levels, the control means further including a comparison means for comparing the vehicular battery voltage level to the first and second threshold voltage levels stored in the storage means and producing a first control signal when the vehicular battery voltage level drops below the first threshold voltage level; charging means responsive to the control means for charging the radio battery; cut-off means responsive to the control means for automatically discontinuing the charging of the radio battery when the first control signal is produced by the control means; annunciator means responsive to the comparison means for annunciating a low battery condition when the vehicular battery voltage level drops below the first threshold level; electronic device monitoring means coupled to the control means for monitoring the voltage level of the radio battery; and the comparison means compares the radio battery voltage level to an electronic device voltage threshold level which is stored in the storage means, the control means producing a second control signal when the radio battery voltage level is below the electronic device voltage threshold level, and the control means sends a signal to the radio instructing the radio to transmit a low voltage alert signal when the vehicular battery voltage level falls below the second threshold voltage level. - View Dependent Claims (5)
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2. A vehicular battery operated charger for charging a battery operated radio having a battery and the vehicular battery having a voltage level, the vehicular battery operated charger comprising;
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vehicular battery monitoring means for monitoring the voltage level of the vehicular battery; control means responsive to said vehicular battery monitoring means, the control means including a storage means for storing first and second threshold voltage levels, the control means further including a comparison means for comparing the vehicular battery voltage level to the first and second threshold voltage levels stored in the storage means and producing a first control signal when the vehicular battery voltage level drops below the first threshold voltage level; charging means responsive to the control means for charging the radio battery; cut-off means responsive to the control means for automatically discontinuing the charging of the radio battery when the first control signal is produced by the control means; annuniciator means responsive to the comparison means for annunciating a low battery condition when the vehicular battery voltage level drops below the first threshold level; electronic device monitoring means coupled to the control means for monitoring the voltage level of the radio battery; and the comparison means compares the radio battery voltage level to an electronic device voltage threshold level which is stored in the storage means, the control means producing a second control signal when the radio battery voltage level is below the electronic device voltage threshold level, the control means also sends a signal to the radio instructing the radio to transmit a low voltage alert signal when the vehicular voltage level falls below the second threshold voltage level, and the cut-off means automatically enables the charging of the radio battery during the transmission of the low voltage alert signal. - View Dependent Claims (3, 4)
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6. A method of charging a battery operated radio having a battery from a vehicular battery operated charger, comprising the steps of:
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charging the radio battery with the vehicular battery operated charger; monitoring the voltage level of the vehicular battery; comparing the vehicular battery voltage level to first and second threshold voltage levels; generating a first control signal when the vehicular battery voltage drops below the first threshold voltage level; discontinuing the charging of the radio battery when the first control signal is generated; automatically annunciating a low battery condition when the vehicular battery voltage level is lower than the first threshold voltage level; monitoring the voltage level of the radio battery; comparing the radio battery voltage level to a radio battery voltage threshold level; and generating a second control signal when the radio battery voltage level is below the radio battery voltage threshold level; and transmitting a low voltage alert signal to a base station when the vehicular battery voltage level falls below the second threshold voltage level. - View Dependent Claims (7, 8, 10)
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9. A method of charging a battery operated radio having a battery from a vehicular battery operated charger, comprising the steps of:
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charging the radio battery with the vehicular battery operated charger; monitoring the voltage level of the vehicular battery; comparing the vehicular battery voltage level to first and second threshold voltage levels; generating a first control signal when the vehicular battery voltage drops below the first threshold voltage level; discontinuing the charging of the radio battery when the first control signal is generated; automatically annunciating a low battery condition when the vehicular battery voltage level is lower than the first threshold voltage level; monitoring the voltage level of the radio battery; comparing the radio battery voltage level to a radio battery voltage threshold level; and generating a second control signal when the radio battery voltage level is below the radio battery voltage threshold level; transmitting a low voltage alert signal when the vehicular battery voltage level falls below the second threshold voltage level; receiving the low voltage alert at a base station; and transmitting a message from the base station to the battery operated radio which causes a task to be performed by the vehicular battery operated charger.
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Specification