Successive Approximation Type Direct Displacement to Digital Converter Suitable for Floating-Wiper Resistive Displacement Sensor

Mohan, Aparna; Sivapraskasam, Mohanasankar; Kumar, V. Jagadeesh

doi:10.1109/iecon.2019.8927220

Cited by 4 publications

(5 citation statements)

References 9 publications

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“…The results are published in [24]. The successive approximation converter shown in figure 2 was breadboarded using commercially available ICs.…”

Section: Experimental Setup Results and Discussionmentioning

confidence: 99%

“…Resistive potentiometric type linear and rotary sensors with sliding contact is widely used, due to its simple structure, low cost, compact size and light weight [22][23][24]. Due to the friction between the wiper and the resistive element, the operating life is limited, say up to some million movements.…”

Section: Discussionmentioning

confidence: 99%

“…The novelty of the proposed scheme lies in the fact that the output is independent of the coupling capacitor that arises due to the introduction of the air gap. The proposed scheme was first simulated to establish its workability [24]. The scheme is analysed in detail and possible sources of errors and remedy for reducing or altogether eliminating such errors are enumerated.…”

Section: Discussionmentioning

confidence: 99%

“…Earlier, we presented briefly, the principle of a successive approximation type signal conditioning scheme suitable for a floating wiper displacement sensor of figure 1 [24]. Here this scheme is elaborated, analysed to understand parameters that would affect the performance.…”

Section: The State Of Artmentioning

confidence: 99%

“…The waveform of signals v cl , v sw and v s4 shown in figure 3 is derived for the condition that the SA algorithm checks v c at the rising edge of v cl . This process is newly introduced and is different from the switching logic used in [24]. Introducing N charge-discharge cycles for determining a bit modifies (3) as:…”

Section: Clockingmentioning

confidence: 99%

See 4 more Smart Citations

Assay of direct digital output floating-wiper resistive displacement sensor

Mohan¹,

Mohanasankar²,

Kumar³

2020

Meas. Sci. Technol.

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The principle of operation of a successive approximation type direct displacement to digital converter for a floating-wiper resistive potentiometric sensor, presented earlier, is analyzed in detail to ascertain possible sources of error that can affect the performance of the transducer. Based on the analysis the method is suitably modified to improve its performance. To establish the efficacy of the altered scheme, a prototype signal conditioning circuit has been built and tested using both an emulated sensor and a prototype sensor. While the worst-case error in the former was found to be 0.5%, it was less than 0.8% in the latter. The test results indicate that the digital output is directly proportional to the per-unit displacement and is independent of the value of the coupling capacitance between the floating-wiper and the resistive element.

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“…The results are published in [24]. The successive approximation converter shown in figure 2 was breadboarded using commercially available ICs.…”

Section: Experimental Setup Results and Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: The State Of Artmentioning

confidence: 99%

Section: Clockingmentioning

confidence: 99%