Stopwatch Verification Platform: The Development of an Automated Device for Stopwatch Calibration
Mohd Safirin Karis1, Nohaslinda Hasim2, Amar Faiz Zainal Abidin3, Siti Fatimah Sulaiman4

1Mohd Safirin Karis, Faculty of Electrical Engineering, Universiti Teknikal Malaysia Melaka, Malaysia.
2Norhaslinda Hasim, Faculty of Electrical Engineering, Universiti Teknikal Malaysia Melaka.
3Amar Faiz Zainal Abidin, Faculty of Electrical & Electronic Engineering Technology, Universiti Teknikal Malaysia Melaka, Malaysia.
4Siti Fatimah Sulaiman, Faculty of Electronic & Computer Engineering, Universiti Teknikal Malaysia Melaka. Kamaru Adzha Kadiran, Faculty of Electrical Engineering, Universiti Teknologi MARA Cawangan Johor, Kampus Pasir Gudang, 81750 Masai, Johor, Malaysia.

Manuscript received on 11 August 2019. | Revised Manuscript received on 16 August 2019. | Manuscript published on 30 September 2019. | PP: 4171-4176 | Volume-8 Issue-3 September 2019 | Retrieval Number: C5500098319/2019©BEIESP | DOI: 10.35940/ijrte.C5500.098319
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Abstract: Stopwatch is designed to quantify the elapses time between the start activation and deactivation. To ensure the precision of the time taken, calibration of the device is essential. National Institute of Standard and Technology (NIST) has provide complete guidelines on the stopwatch and timer calibration. However, the standards guidelines usually use manual calibration personnel hence may possibly cause inefficiency for calibration works. The ‘Stopwatch Verification Platform’ is a prototype aimed to replace the manual handling of digital stopwatch calibration with an automated timer-controlled device, without interfering with NIST recommended practice. The ‘Stopwatch Verification Platform’ is able to automatically trigger start and stop the reference and test stopwatches by integrating with precise timer controller and specific relay connections. The timer controller circuitry is integrated with the reference stopwatch circuitry, with 0.001 second resolutionIt is capable in verifying more units of stopwatches by using one reference. The measurement procedures do not contradict with the NIST recommended practice. This prototype does not alter the uncertainties calculation because it is a well-developed standard formula which is set by international standard.
Index Terms: Calibration, Stopwatch, Standards, Uncertainties.

Scope of the Article:
Automated Software Specification