| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication terminal device capable of detecting a radiation dose with low current consumption and efficiently notifying users of the measured radiation dose.SOLUTION: A radiation sensor 2 interrupts an application CPU 4 when the number of radiation detection pulses reaches a threshold value stored a threshold value register incorporated in the sensor. The application CPU 4 calculates a radiation dose on the basis of the count value and a period of time the count value has reached the threshold value, and determines whether the radiation dose is higher than a radiation dose specified by the threshold value. When the measured radiation dose is higher than the threshold value, the application CPU 4 sets a count threshold value of the radiation sensor 2 at a count value corresponding to a new higher radiation dose. |
