System, method and article for indicating a wet or dry condition to a user

A method for indicating wet or dry condition to a user, the method comprising:

• positioning a first sensor and a second sensor within a target area of an absorbent article, wherein the first sensor comprises
• a first circuit comprising a first RFID IC, a first switch and a first antenna connected in parallel, the first switch acting as a closed switch if there is liquid within the target area and an open switch if there is no liquid within the target area,
• the first switch being configured to detect the target area with a dry condition, and arrange the first circuit in an open circuit configuration based upon the detection of the dry condition,
• the first RFID IC being configured to generate a first communication signal when the first circuit is in the open circuit configuration, and the first antenna being configured to transmit the first communication signal to an Radio-frequency identification (RFID) reader;
• the second sensor comprises
• a second circuit comprising a second RFID IC, a second switch and a second antenna connected in series, the second switch acting as a closed switch if there is liquid within the target area and an open switch if there is no liquid within the target area,
• the second switch being configured to detect the target area with a wet condition, and arrange the second circuit in a closed circuit configuration based upon the detection of the wet condition,
• the second RFID IC being configured to generate a second communication signal when the second circuit is in the closed circuit configuration, and
• the second antenna being configured to transmit the second communication signal to the RFID reader;
• detecting, by the first sensor and the second sensor, the target area with the dry condition or the wet condition;
• receiving, by the RFID reader, the first or second communication signal, determining the target area is in the dry condition or the wet condition, and generating a notification signal for a user, the notification signal being indicative of the dry condition or the wet condition detected in the target area.

An absorbent article, comprising:

• a first reusable sensor and a second reusable sensor positioned inside the absorbent article such that the first reusable sensor and the second reusable sensor are in direct contact with a liquid in the absorbent article, wherein the first sensor comprises
• a first circuit comprising a first RFID IC, a first switch and a first antenna connected in parallel, the first switch acting as a closed switch if there is liquid within the target area and an open switch if there is no liquid within the target area,
• the first switch being configured to detect the target area with a dry condition, and arrange the first circuit in an open circuit configuration based upon the detection of the dry condition,
• the first RFID IC being configured to generate a first communication signal when the first circuit is in the open circuit configuration, and
• the first antenna being configured to transmit the first communication signal to an Radio-frequency identification (RFID) reader;
• the second sensor comprises
• a second circuit comprising a second RFID IC, a second switch and a second antenna connected in series, the second switch acting as a closed switch if there is liquid within the target area and an open switch if there is no liquid within the target area,
• the second switch being configured to detect the target area with a wet condition, and arrange the second circuit in a closed circuit configuration based upon the detection of the wet condition,
• the second RFID IC being configured to generate a second communication signal when the second circuit is in the closed circuit configuration, and
• the second antenna being configured to transmit the second communication signal to the RFID reader.