| 摘要 |
<p>Electronic Measuring Apparatus Electronic measuring apparatus, specifically for measuring the fuel consumption of a vehicles is arranged to receive distance indicative signals from a speed sensor and rate of fuel flow signals from a flowmeter sensor. The values represented by these signals are then divided by suitable processing means, such as a microprocessor, and the resulting output signal provides an indication on a display of fuel consumption with respect to distance travelled. A manually activatable calibration circuit causes storage of the value of the speed-dependent signal at the moment of manual activation and the microprocessor makes use of this stored reference value as a weighting factor for the calculation of fuel consumption. Accordingly it is arranged that the manual activation of the calibration circuit should take place at a predetermined speed, and thenceforth other speeds are calculated on the basis of the predetermined speed corresponding to the value of the speeddependent signal at the moment of activation of the calibration circuit.</p> |
