| 摘要 |
PURPOSE:To achieve higher resolutions in the indication with a pointer without any increase in a processing mechanism at a drive section, by a method wherein an input from an object to be measured is made to overlap a pulsating current simultaneously with being converted into a voltage signal and then, converted into digital from analog. CONSTITUTION:A signal with the frequency proportional to the amount of measurement enters a frequency-voltage converting section 1 and a signal (a) is outputted. An overlap shaping section 3 makes a signal (b) of a pulsating current generator section 2 overlap the signal (a). An overlap signal (c) is converted into a specified digital signal (d) divided by the voltage level with an A/D converter section 4 to be inputted into a drive section D. The energization of cross coils X and Y at a drive output section 8 is pulsated and when the frequency of the signal (b) is kept so high as not to deflect a needle. Thus, a pointer indicates an intermediate position is reading corresponding to two voltage zone ranges, thereby achieving higher resolutions in the indication of the pointer without altering a drive section B. |
