| 摘要 |
PURPOSE:To make an inexpensive and compact structure by converting the temp. data obtd. from a temp. sensor into voice data and by making the voice data signal bearable by a receiver with its transmission. CONSTITUTION:The analog temp. information of from a temp. sensor 1 is converted into a digital temp. data by A/D convertor 2. This digital temp. data is converted into voice data by a temp. voice convertion processing part 3. This digital voice data is converted into analog voice data signal by D/A convertor 4. This voice data signal is given to an FM modulation circuit 6 via a BPF 5. The signal having past the BPF 5 is transmitted via an antenna 8 with FM or AM modulation in the circuit 6. The transmitted voice data are received and heard by a receiver via an antenna 9. According to said structure it is unnecessary to provide a transmitting means nor temp. displaying means on the main body of a thermometer, so it can be made inexpensive and compact. |
