| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a vehicle radio communication apparatus made as a module including a radio communication section and an antenna, and arranged on an external surface of a vehicle body, in which temperature anomaly of the radio communication section is accurately determined.SOLUTION: A vehicle radio communication apparatus comprises the steps of: obtaining a temperature variation parameter which makes temperature of a radio communication section 190 in a normal state change (S31-S34); and setting a threshold TH according to the temperature variation parameter (S35-S36). Then, the threshold TH is varied according to temperature variation of the radio communication section 190 in the normal state. The threshold TH set as mentioned is compared with temperature detected by a temperature sensor 192 so that the temperature of the radio communication section 190 is determined wether it is abnormal or not.</p> |
