TWI655411B

Disclosed is a device for counting the number of inhalation while medicine bottle is inserted into an inhalator, or measuring breathing capacity while medicine bottle is not inserted. The device includes a shell body, a roller, magnetic pieces, a sensor, a blue tooth integrated circuit (IC), a battery unit, and a circuit board. The roller is provided in the shell body, the magnetic pieces are attached onto the roller, and the circuit board is fixed on the shell body. The battery unit supplies electric power. When medicine agent is sprayed from the medicine bottle or the shell body is blown, the roller to rotate, the magnetic pieces synchronously rotate, and the sensor detects variation of a magnetic flux. The blue tooth IC calculates the number of inhalation when the medicine bottle is connected, or calculates breathing capacity of the user when the medicine bottle is not connected.