US 11,990,021 B2
Travel suitcase search system and tag
Gi-Jeoung Eum, Goyang-si (KR)
Filed by Gi-Jeoung Eum, Goyang-si (KR)
Filed on May 4, 2021, as Appl. No. 17/307,267.
Application 17/307,267 is a continuation of application No. PCT/JP2019/028013, filed on Jul. 17, 2019.
Claims priority of application No. 2018-215912 (JP), filed on Nov. 16, 2018.
Prior Publication US 2021/0272441 A1, Sep. 2, 2021
Int. Cl. H04W 76/14 (2018.01); G08B 7/06 (2006.01); G08B 21/24 (2006.01); G08B 25/10 (2006.01)
CPC G08B 21/24 (2013.01) [G08B 7/06 (2013.01); G08B 25/10 (2013.01); H04W 76/14 (2018.02)] 11 Claims
OG exemplary drawing
 
1. A travel suitcase search system, comprising:
a smartphone carried by a traveler; an application function unit for initiating a search for locating a travel suitcase by when an application program installed in the smartphone; and a tag attached to the travel suitcase;
wherein the smartphone includes,
a display device for displaying processing contents processed by the application function unit,
an input device for carrying out that the application function unit inputs a selection for an operator or an input by an operator in response thereto,
a first communication device for carrying out one-to-one communication with the tag,
a second communication device for carrying out one-to-one communication over a shorter distance than the first communication device with the tag, and
an audio output device for generating an alarm sound or vibration according to the function of the application function unit,
wherein the application function unit includes,
a first connection verification device for verifying the connection of a one-to-one wireless communication according to the first communication device with the tag,
a second connection verification device for verifying the connection of a one-to-one wireless communication according to the second communication device with the tag, and
a suitcase lifting prevention device for monitoring the intensity of radio wave exchanged with the tag and providing an alarm when the intensity of radio wave is weaker than a predetermined intensity,
wherein the tag includes,
a first communication unit for carrying out one-to-one wireless communication with the first communication device of the smartphone,
a second communication unit for carrying out one-to-one wireless communication with the second communication device of the smartphone,
a light emitting unit for emitting light,
a light guide plate or an optical fiber that induces light emitted by the light emitting unit to emit light in a predetermined pattern,
a control unit for controlling the communication unit and the light emitting unit, and
a power supply unit to supply power to each unit,
wherein the control unit controls,
a communication establishment mode that carries out one-to-one wireless communication between the first communication device of the smartphone and the first communication unit of the tag, thereby carrying out one-to-one wireless communication with the second communication unit of the smartphone and the second communication unit of the tag,
a sleep mode in which only the first communication unit continues to emit radio wave at regular intervals when the first communication unit and the second communication unit are unable to communicate with each other,
a wake-up mode in which the light emitting unit shines at a frequency adjusted according to the intensity of the corresponding radio wave, when the first communication unit of the tag resumes communication with the first communication device of the smartphone, and at the same time, the light emitting unit shines at a frequency adjusted according to the intensity of the radio wave, when the second communication unit of the tag resumes communication with the second communication device of the smartphone.