Determining location and survivability of a captive person under a disaster situation by use of a mobile device
First Claim
1. A handheld mobile computing and communication device powered by a battery system for use at least as a mobile phone in a normal operation mode and for use as a survivability detecting device when a person is trapped in a disaster situation, the device comprising:
- (a) a first communication unit providing a means for communicating with another communication device through a public telephone network;
(b) a second communication unit providing a means for communicating with another communication device through an ad hoc communication network after said first communication unit is powered off;
(c) an accelerometer/gyroscope for detecting motion of said device induced by the trapped person; and
(d) a power management unit comprising;
a means for supplying power for the first communication unit in a normal operation;
a means for measuring remaining power of the battery system in a normal operation;
a means for switching off power supply to the first communication unit if the measured power is below a predetermined value;
a means for supplying power for said second communication unit after said first communication unit is powered off; and
a means for supplying additional power to activate said accelerometer/gyroscope if an authorized external signal is received by said second communication unit,whereby said power management unit enables said device to operate for a prolonged period of time by efficiently utilizing the reserved battery power while the trapped person is waiting for the rescue, which maximizes the opportunity that a trapped person is rescued in a disaster situation such as after an earthquake or a terrorist attack.
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Abstract
A mobile computing and communication device for an emergency occasion is disclosed. The device, for example, is useful for a trapped person under a mound of debris created by a fallen building during an earthquake or a terrorist attack. The invention is based upon a conventional mobile communication device with an additional communication unit. The additional unit is based upon a short-range and ad hoc communication network. The invention is characterized by that a power management unit is used to monitor the remaining power of a battery system for the mobile device. If the power is below a preset threshold value, the main function of the mobile device as a mobile phone is switched off and the reserved power is used to supply energy for the second communication unit, which typically consumes much less power and lasts for very long time. An authorized signal delivered by a nearby mobile rescue station will switch on the mobile device to provide the information with regard to trapped person'"'"'s identity, location and status. A sensory unit such as an accelerometer and/or a gyroscope may detect a signal if the person touches and/or moves the device after receiving a triggering signal.
22 Citations
15 Claims
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1. A handheld mobile computing and communication device powered by a battery system for use at least as a mobile phone in a normal operation mode and for use as a survivability detecting device when a person is trapped in a disaster situation, the device comprising:
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(a) a first communication unit providing a means for communicating with another communication device through a public telephone network; (b) a second communication unit providing a means for communicating with another communication device through an ad hoc communication network after said first communication unit is powered off; (c) an accelerometer/gyroscope for detecting motion of said device induced by the trapped person; and (d) a power management unit comprising; a means for supplying power for the first communication unit in a normal operation; a means for measuring remaining power of the battery system in a normal operation; a means for switching off power supply to the first communication unit if the measured power is below a predetermined value; a means for supplying power for said second communication unit after said first communication unit is powered off; and a means for supplying additional power to activate said accelerometer/gyroscope if an authorized external signal is received by said second communication unit, whereby said power management unit enables said device to operate for a prolonged period of time by efficiently utilizing the reserved battery power while the trapped person is waiting for the rescue, which maximizes the opportunity that a trapped person is rescued in a disaster situation such as after an earthquake or a terrorist attack. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of communication between a handheld mobile computing and communication device associated with a trapped person and a mobile rescue station associated with a rescue team, wherein the mobile device comprising a first communication unit for communicating through a public telephone network, a second communication unit for communicating through an ad hoc communication network, an accelerometer/gyroscope, a battery system, and functional blocks for delivering an event of notable vibration and/or a ring tone, the method comprising the steps of:
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(a) switching off the power supply from the battery system to said first communication unit; (b) switching on the power supply from the battery system to support the operation of said second communication unit; (c) operating said second communication unit under a low power mode as a receiver only; (d) receiving an authorized signal from the mobile rescue station; (e) switching on the accelerometer/gyroscope and said functional blocks; (f) delivering alert signals including an event of notable vibrations and/or a ring tone; (g) measuring signals generated from the accelerometer and/or gyroscope in a predetermined frequency; and (h) operating the second communication unit as a transceiver and transmitting the measured signals to the mobile rescue station. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification