| 摘要 |
PURPOSE:To prevent display from flickering, by a method wherein an analogue weighing value signal is converted into a digital via a filter, and after a given time has elapsed from a time when reaching a zero cross point, a weighing value data is displayed. CONSTITUTION:An output of a load cell 4, which is the result of loading C, is converted into a digital via an amplifier 5, a low-pass filter 6, and an AD converter. The output is inputted to a zero cross detector 8, and a trigger pulse P is inputted to a timer part 9 corresponding to the passage through a zero cross point. The timer part 9 inverts a gate part 10 for a given period of time t corresponding to a first trigger pulse, and the weighing value of the AD converter 7 is inputted to a weight display part 10 after a t-time has elapsed. An overshoot part at a rise part of a step signal from the AD converter is not displayed, and this prevents flickering of the display. |
