Wireless monitoring system and method
First Claim
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1. A wireless monitoring system comprising:
- a master controller having a wireless transmitting unit and a wireless receiving unit;
a first module being remote to the master controller and having a first accelerometer, a first wireless transmitting unit and a first wireless receiving unit, the first module being configured with a first alarm bit that is set to indicate an alarm condition when the first accelerometer senses a first acceleration above a first threshold; and
a second module being remote to the master controller and having a second accelerometer, a second wireless transmitting unit and a second wireless receiving unit, the second module being configured with a second alarm bit that is set to indicate an alarm condition when the second accelerometer senses a second acceleration above a second threshold,wherein the master controller is programmed to issue a polling signal to the first module and the second module at separate times, and each of the first module and the second module is configured to respond to the polling signal if the respective first alarm bit or the second alarm bit therein is set and ignore the polling signal if the respective first alarm bit or the second alarm bit therein is not set.
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Abstract
A wireless monitoring system and method carries out wireless communication is carried out according to the ZigBee standard. The ZigBee standard allows for low-cost, low-power and high-density implementation of the wireless monitoring system and method, so that wireless monitoring system and method may be rolled out on a large scale to provide patient monitoring and other types of monitoring.
8 Citations
16 Claims
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1. A wireless monitoring system comprising:
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a master controller having a wireless transmitting unit and a wireless receiving unit; a first module being remote to the master controller and having a first accelerometer, a first wireless transmitting unit and a first wireless receiving unit, the first module being configured with a first alarm bit that is set to indicate an alarm condition when the first accelerometer senses a first acceleration above a first threshold; and a second module being remote to the master controller and having a second accelerometer, a second wireless transmitting unit and a second wireless receiving unit, the second module being configured with a second alarm bit that is set to indicate an alarm condition when the second accelerometer senses a second acceleration above a second threshold, wherein the master controller is programmed to issue a polling signal to the first module and the second module at separate times, and each of the first module and the second module is configured to respond to the polling signal if the respective first alarm bit or the second alarm bit therein is set and ignore the polling signal if the respective first alarm bit or the second alarm bit therein is not set. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device comprising:
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an accelerometer; and a wireless communication chip configured to communicate with a base station using a direct sequence spread spectrum modulation technique and to determine whether a voltage output of the accelerometer exceeds a threshold, wherein the wireless communication chip issues an alarm signal to the base station if the voltage output of the accelerometer exceeds the threshold when a polling signal is received from the base station, the wireless communication chip includes an alarm bit that is set to indicate an alarm condition when the voltage output of the accelerometer exceeds the threshold, and the wireless communication chip ignores the polling signal and the issuing of the alarm signal if the alarm bit is not set. - View Dependent Claims (9, 10, 11)
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12. A method of monitoring a device for an alarm condition, the method comprising:
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receiving a polling signal from a base station; sensing a voltage output of an accelerometer that is installed in the device; comparing the sensed voltage output with a threshold; setting an alarm bit if the sensed voltage output exceeds the threshold;
transmitting an alarm signal to the base station if the alarm bit is set at the time the polling signal is received from the base station; andignoring the polling signal and the transmitting of the alarm signal if the alarm bit is not set at the time the polling signal is received from the base station, wherein the polling signal is received from the base station and the alarm signal is transmitted to the base station using a direct sequence spread spectrum modulation technique. - View Dependent Claims (13, 14, 15, 16)
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Specification