5 Demonstration

Pictures of the hardware setup and screenshots of the DV interface were taken for demonstration purposes. For improved measurement accuracy, the weight scale application is running in Configuration 4. Data from Configuration 3 and 4 were plotted in the DV interface to demonstrate the conversion time versus accuracy tradeoff.

Figure 5-1. Configuration 3 - DV Plot
Figure 5-2. Configuration 4 - DV Plot

Two objects (respectively two and one kilogram) are placed on the weight scale. The influence of the additional software accumulation and averaging is clearly noticeable when comparing the plotted results. The accuracy improvement comes at the cost of conversion time. Although more accurate, in Configuration 4, the conversion result is plotted every 2.7 seconds, while in Configuration 3, the result is plotted every 156 ms.

Figure 5-3. Configuration 4 - Demo Setup with 1 kg Object on the Weight Scale
Figure 5-4. Configuration 4 - Measurement Results of the 1 kg Object, Displayed in the DV Serial Terminal Window
Figure 5-5. Configuration 4 - Demo Setup with 2 kg Object on the Weight Scale
Figure 5-6. Configuration 4 - Measurement Results of the 2 kg Object, Displayed in the DV Serial Terminal Window