Method of increasing sensing device noticeability upon low battery level
First Claim
1. A sensing device configured to be worn by a patient and operable to measure at least one physiological parameter from the patient and transmit the measured physiological parameter to a monitoring device, comprising:
- at least one sensor for detecting the physiological parameter from the patient;
a processor for receiving the detected physiological parameter;
a wireless transceiver for transmitting wireless signals from the processor to the monitoring device;
a battery;
an indicator operable by the processor when a state of charge of the battery falls below a minimum threshold; and
a re-writeable passive RFID tag,wherein the processor is operable to write an emergency message on the RFID tag when the state of charge of the battery falls below the minimum threshold, wherein the emergency message is unrelated to the state of charge of the battery.
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Abstract
A wireless sensing device and a method for operating a wireless sensing device are described herein. The wireless sensing device includes a battery power supply and a processor that transmits detected physiological parameters from the sensing device to a monitoring device. when the battery level within the sensing device falls below a minimum threshold, the processor of the sensing device reserves a portion of the battery charge to power an indicator to increase the noticeability of the sensing device. The sensing device can also include an RFID tag that is written to by the processor when the state of charge on the battery falls below the minimum threshold. The RFID tag allows RFID detectors to sense the presence of the sensing device without requiring additional battery power.
15 Citations
13 Claims
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1. A sensing device configured to be worn by a patient and operable to measure at least one physiological parameter from the patient and transmit the measured physiological parameter to a monitoring device, comprising:
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at least one sensor for detecting the physiological parameter from the patient; a processor for receiving the detected physiological parameter; a wireless transceiver for transmitting wireless signals from the processor to the monitoring device; a battery; an indicator operable by the processor when a state of charge of the battery falls below a minimum threshold; and a re-writeable passive RFID tag, wherein the processor is operable to write an emergency message on the RFID tag when the state of charge of the battery falls below the minimum threshold, wherein the emergency message is unrelated to the state of charge of the battery. - View Dependent Claims (2, 3, 4)
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5. A method of monitoring a patient, the method comprising the steps of:
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operating each of one or more wireless sensing devices to measure a physiological parameter from the patient and wirelessly transmit patient monitoring signals to a monitoring device; determining a state of charge of a battery associated with the wireless sensing device; generating an indicator signal from the wireless sensing device when the state of charge falls below a minimum threshold required to communicate with the monitoring device; writing an emergency message to an RFID tag of the wireless sensing device when the state of charge falls below the minimum threshold, wherein the emergency message is unrelated to the state of charge of the battery and includes information describing the patient. - View Dependent Claims (6, 7, 8, 9, 10)
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11. A method of monitoring a patient, the method comprising the steps of:
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operating each of one or more wireless sensing devices to measure a physiological parameter from the patient and wirelessly transmit patient monitoring signals to a monitoring device; determining a state of charge of a battery associated with the wireless sensing device; generating an indicator signal from the wireless sensing device when the state of charge falls below a minimum threshold; attempting to communicate between the wireless sensing device and the monitoring device; writing an emergency message to an RFID tag of the wireless sensing device when the state of charge falls below the minimum threshold and upon failure to communicate with the monitoring device, wherein the emergency message is unrelated to the state of change of the battery and includes information describing the patient; and generating an enhanced indicator signal that is different from the indicator signal when the state of charge falls below the minimum threshold and upon failure to communicate with the monitoring device. - View Dependent Claims (12, 13)
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Specification