Wireless transmitting/receiving system, wireless receiving device and wireless transmitting/receiving method
First Claim
1. A wireless transmitting/receiving system comprising:
- a transmitter disposed on a target object, the transmitter transmitting a wireless signal;
a first directional receiver disposed with respect to an entry/exit boundary, the first directional receiver receiving the wireless signal and generating a first received signal strength indication;
a camera capturing an image of the entry/exit boundary;
a storage device storing a mapping table of target object location and received signal strength; and
a processor electrically connected to the storage device, the processor determining a location of the target object and a moving direction of the target object with respect to the entry/exit boundary according to the image and the mapping table of target object location and received signal strength;
wherein a first receiving range of the first directional receiver is oriented towards a first side of the entry/exit boundary;
the processor determines that the target object moves from the first side of the entry/exit boundary towards a second side of the entry/exit boundary when the first received signal strength indication increases gradually first and then decreases rapidly;
the processor determines that the target object moves from the second side of the entry/exit boundary towards the first side of the entry/exit boundary when the first received signal strength indication increases rapidly first and then decreases gradually;
the first side is opposite to the second side.
1 Assignment
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Accused Products
Abstract
A wireless transmitting/receiving system includes a transmitter, a first directional receiver, a camera, a storage device and a processor. The transmitter is disposed on a target object and transmits a wireless signal. The first directional receiver is disposed with respect to an entry/exit boundary. The first directional receiver receives the wireless signal and generates a first received signal strength indication. The camera captures an image of the entry/exit boundary. The storage device stores a mapping table of target object location and received signal strength. The processor is electrically connected to the storage device and determines a location of the target object and a moving direction of the target object with respect to the entry/exit boundary according to the image and the mapping table of target object location and received signal strength.
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Citations
16 Claims
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1. A wireless transmitting/receiving system comprising:
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a transmitter disposed on a target object, the transmitter transmitting a wireless signal; a first directional receiver disposed with respect to an entry/exit boundary, the first directional receiver receiving the wireless signal and generating a first received signal strength indication; a camera capturing an image of the entry/exit boundary; a storage device storing a mapping table of target object location and received signal strength; and a processor electrically connected to the storage device, the processor determining a location of the target object and a moving direction of the target object with respect to the entry/exit boundary according to the image and the mapping table of target object location and received signal strength; wherein a first receiving range of the first directional receiver is oriented towards a first side of the entry/exit boundary;
the processor determines that the target object moves from the first side of the entry/exit boundary towards a second side of the entry/exit boundary when the first received signal strength indication increases gradually first and then decreases rapidly;
the processor determines that the target object moves from the second side of the entry/exit boundary towards the first side of the entry/exit boundary when the first received signal strength indication increases rapidly first and then decreases gradually;
the first side is opposite to the second side. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless receiving device disposed with respect to an entry/exit boundary, the wireless receiving device cooperating with a transmitter, the transmitter being disposed on a target object, the transmitter transmitting a wireless signal, the wireless receiving device comprising:
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a first directional receiver receiving the wireless signal and generating a first received signal strength indication; a camera capturing an image of the entry/exit boundary; a storage device storing a mapping table of target object location and received signal strength; and a processor electrically connected to the storage device, the processor determining a location of the target object and a moving direction of the target object with respect to the entry/exit boundary according to the image and the mapping table of target object location and received signal strength; wherein a first receiving range of the first directional receiver is oriented towards a first side of the entry/exit boundary;
the processor determines that the target object moves from the first side of the entry/exit boundary towards a second side of the entry/exit boundary when the first received signal strength indication increases gradually first and then decreases rapidly;
the processor determines that the target object moves from the second side of the entry/exit boundary towards the first side of the entry/exit boundary when the first received signal strength indication increases rapidly first and then decreases gradually;
the first side is opposite to the second side. - View Dependent Claims (8, 9, 10, 11)
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12. A wireless transmitting/receiving method comprising steps of:
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transmitting a wireless signal by a transmitter, wherein the transmitter is disposed on a target object; receiving the wireless signal and generating a first received signal strength indication by a first directional receiver, wherein the first directional receiver is disposed with respect to an entry/exit boundary; capturing an image of the entry/exit boundary by a camera; and determining a location of the target object and a moving direction of the target object with respect to the entry/exit boundary according to the image and a mapping table of target object location and received signal strength by a processor; wherein a first receiving range of the first directional receiver is oriented towards a first side of the entry/exit boundary and the wireless transmitting/receiving method further comprises steps of; determining that the target object moves from the first side of the entry/exit boundary towards a second side of the entry/exit boundary by the processor when the first received signal strength indication increases gradually first and then decreases rapidly; and determining that the target object moves from the second side of the entry/exit boundary towards the first side of the entry/exit boundary by the processor when the first received signal strength indication increases rapidly first and then decreases gradually; wherein the first side is opposite to the second side. - View Dependent Claims (13, 14, 15, 16)
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Specification