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RESEARCH PRODUCT
Novel Wood Resistance Measurement Method Reducing the Initial Transient Instabilities Arising in DC Methods Due to Polarization Effects
Silvia Casans BergaA. Edith Navarro AntónAlfredo Rosado-muñozR. Garcia-gilsubject
0106 biological sciencesMaterials scienceComputer Networks and CommunicationsCircuits electrònicslcsh:TK7800-836001 natural sciencescomplex mixtureswood resistance measurementlaw.inventionElectrical resistance and conductancelaw010608 biotechnologywood polarization effectTransient responseElectrical and Electronic EngineeringComposite materialrelaxation oscillatorElectronic circuitEnginyeria elèctricaOscillation010401 analytical chemistryDirect currentRelaxation oscillatorlcsh:Electronicstechnology industry and agriculture0104 chemical sciencesHardware and ArchitectureControl and Systems EngineeringSignal ProcessingTransient (oscillation)Alternating currentelectrical resistance measuredescription
A novel method for measuring the electrical resistance in wood is presented. It is based on applying an Alternating Current (AC) to two electrodes rammed into the wood. The method reduces the transient time for value stabilization. In case of Direct Current (DC) resistance measurement methods, typically used in wood measurement, an initial transient exists, invalidating the measured value during an initial transient period. This measurement method uses an electronic circuit based on a relaxation oscillator where the wood automatically sets the oscillation frequency depending on its electrical resistance. Compared to other AC methods, this circuit greatly simplifies the measurement process, not requiring any previous analysis for wood AC frequency estimation. Experimental results for four different wood species showed that, in all cases, the transient response of the measured wood resistance is improved when compared to the DC resistance method, reducing the stabilization time from 10&ndash
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-11-01 | Electronics |