UTILIZING MAGNETIC FIELD BASED NAVIGATION
First Claim
1. A positioning apparatus comprising:
- a radio frequency based location tracking sensor;
a magnetometer to measure Earth'"'"'s magnetic field EMF vector; and
at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the positioning apparatus at least to;
detect that the positioning apparatus is within a predetermined control area inside a building by identifying an indoor location of the positioning apparatus on the basis of a low range data transfer received with the radio frequency based location tracking sensor, wherein the low range data transfer applies at least one of the following;
a radio frequency identification technique, a Bluetooth communication protocol, a IEEE 802.15.4 communication protocol, a low-rate wireless personal area network, an indoor base station based location discovery; and
cause initialization, with the indoor location identified by the low range data transfer, and activation of an application employing an indoor EMF based positioning system, wherein the application uses an indoor magnetic field map representing at least one of magnitude and direction of EMF affected by the local structures of the building at a given location inside the building and the EMF vector measured with the magnetometer.
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Abstract
There is provided a solution comprising detecting that a positioning device is within a predetermined control area associated with a building, acquiring a first sequence of magnetic field measurements carried out by the positioning device, wherein the first sequence represents at least one of the magnitude and the direction of Earth'"'"'s magnetic field; determining that an operational environment of the positioning de-vice has changed between an indoor environment and an outdoor environment when a at least one predetermined criterion with respect to the first sequence is met; and causing actuation of a predetermined software function in or with respect to the positioning device when the operational environment of the positioning device has changed.
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Citations
12 Claims
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1. A positioning apparatus comprising:
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a radio frequency based location tracking sensor; a magnetometer to measure Earth'"'"'s magnetic field EMF vector; and at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the positioning apparatus at least to; detect that the positioning apparatus is within a predetermined control area inside a building by identifying an indoor location of the positioning apparatus on the basis of a low range data transfer received with the radio frequency based location tracking sensor, wherein the low range data transfer applies at least one of the following;
a radio frequency identification technique, a Bluetooth communication protocol, a IEEE 802.15.4 communication protocol, a low-rate wireless personal area network, an indoor base station based location discovery; andcause initialization, with the indoor location identified by the low range data transfer, and activation of an application employing an indoor EMF based positioning system, wherein the application uses an indoor magnetic field map representing at least one of magnitude and direction of EMF affected by the local structures of the building at a given location inside the building and the EMF vector measured with the magnetometer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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detecting that a positioning apparatus is within a predetermined control area inside a building by identifying an indoor location of the positioning apparatus on the basis of a low range data transfer received with a radio frequency based location tracking sensor of the positioning apparatus, wherein the low range data transfer applies at least one of the following;
a radio frequency identification technique, a Bluetooth communication protocol, a IEEE 802.15.4 communication protocol, a low-rate wireless personal area network, an indoor base station based location discovery; andcausing initialization, with the indoor location identified by the low range data transfer, and activation of an application employing an indoor Earth'"'"'s magnetic field EMF based positioning system, wherein the application uses an indoor magnetic field map representing at least one of magnitude and direction of EMF affected by the local structures of the building at a given location inside the building and an EMF vector measured with a magnetometer of the positioning apparatus. - View Dependent Claims (9, 10, 11)
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12. A computer program product embodied on a distribution medium readable by a computer and comprising program instructions which, when loaded into an apparatus, execute a method comprising:
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detecting that a positioning apparatus is within a predetermined control area inside a building by identifying an indoor location of the positioning apparatus on the basis of a low range data transfer received with a radio frequency based location tracking sensor of the positioning apparatus, wherein the low range data transfer applies at least one of the following;
a radio frequency identification technique, a Bluetooth communication protocol, a IEEE 802.15.4 communication protocol, a low-rate wireless personal area network, an indoor base station based location discovery; andcausing initialization, with the indoor location identified by the low range data transfer, and activation of an application employing an indoor Earth'"'"'s magnetic field EMF based positioning system, wherein the application uses an indoor magnetic field map representing at least one of magnitude and direction of EMF affected by the local structures of the building at a given location inside the building and an EMF vector measured with a magnetometer of the positioning apparatus.
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Specification