Sharp Developed a Location Information Beacon “Lesbee”

Sharp recently announced that it has developed a location information beacon “Lesbee” that eliminates the need for battery replacement by installing solar cells with high power generation efficiency. It operates stably even at the brightness of an emergency light indoors, reducing the time and labor of regular maintenance.

A beacon is a device that transmits location information signals via Bluetooth. If you receive it with a smartphone installed with a dedicated application, you can identify the location even in environments where GPS is not available, such as indoors and underground. Demand for indoor map guidance and services using location information is expected.

Conventional beacons generally use a depleted primary battery, and it was necessary to replace the battery regularly. In addition, it was necessary to install it at a height of about 2 meters above the ground to prevent the radio waves from being attenuated.

Resby uses “dye-sensitized solar cells” with high power generation efficiency. It is said that stable signal transmission can be performed even in an environment with little light. This battery was certified in 2012 as “the world’s highest power generation efficiency” in the dye-sensitized solar cell field of the US solar cell magazine “Progress in Photovoltaics”.

In a bright environment of 300 lux, 10 signals can be transmitted per second. In a dark environment of about 50 lux, such as under an emergency light installed indoors, it is said that it can stably send a signal about once a second.

Product will be sold to corporations that provide location information services.