Efficient RKE energy monitoring strategy
First Claim
1. A method for selectively providing power to at least one component of a vehicle-based receiver module for determining the presence and validity of a transmitted RF signal, said RF signal is a request signal for activating a respective vehicle accessory function, said method comprising the steps of:
- providing said power to a receiver for a first period of time;
operating said receiver to receive any RF signal that may be present from a remote transmitting device;
determining a received signal strength indicator (RSSI) associated with a received RF signal; and
if said RSSI is between a first predetermined threshold and a second predetermined threshold, then determining a noise characterization parameter;
if said RSSI is greater than said first predetermined threshold then automatically providing said power to said receiver for an extended period of time; and
if said RSSI is less than said second predetermined Threshold ten automatically terminating said power to said receiver.
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Accused Products
Abstract
A method is provided for selectively providing power to at least one component of a vehicle-based receiver module for determining the presence and validity of a transmitted RF signal. The RF signal is a request signal for activating a respective vehicle accessory function. Power is provided to a receiver for a first period of time. The receiver is operated to receive any RF signal that may be present from a remote transmitting device. A received signal strength indicator (RSSI) associated with operating the receiver is determined. A determination is made whether the RSSI is greater than a first predetermined threshold. The power is terminated to the receiver after the first period of time if the RSSI is not greater than the first predetermined threshold.
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Citations
11 Claims
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1. A method for selectively providing power to at least one component of a vehicle-based receiver module for determining the presence and validity of a transmitted RF signal, said RF signal is a request signal for activating a respective vehicle accessory function, said method comprising the steps of:
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providing said power to a receiver for a first period of time; operating said receiver to receive any RF signal that may be present from a remote transmitting device; determining a received signal strength indicator (RSSI) associated with a received RF signal; and if said RSSI is between a first predetermined threshold and a second predetermined threshold, then determining a noise characterization parameter; if said RSSI is greater than said first predetermined threshold then automatically providing said power to said receiver for an extended period of time; and if said RSSI is less than said second predetermined Threshold ten automatically terminating said power to said receiver. - View Dependent Claims (2, 3, 4, 5)
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6. A control system for energizing at least one component within a vehicle-based control module for a selective duration of time for determining a presence and validity of a RF signal for actuating a vehicle accessory, said control system comprising:
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a receiver for receiving an RF signal and generating an RSSI signal corresponding to said RF signal; a controller for determining said presence of said RF signal in response to said RSSI signal and for determining said validity of said RF signal; and a strobe circuit for providing power to said receiver; wherein said strobe circuit terminates said power to said receiver if said controller determines that said RSSI signal is less than a second predetermined threshold; wherein said strobe circuit terminates said power to said receiver if said controller determines that said RSSI signal is between a first predetermined threshold and a second predetermined threshold and in response to a noise characterization parameter; wherein said strobe circuit provides said power to said receiver for an extended period of time so said controller can determine said validity of said RF signal if said RSSI signal is greater than said first predetermined threshold; and wherein said strobe circuit provides said power to said receiver for an extended period of time so said controller can determine said validity of said RF signal in response to said noise characterization parameter. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification