2019
DOI: 10.1109/tim.2018.2843605
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A Multiprobe Heat Pulse Sensor for Soil Moisture Measurement Based on PCB Technology

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Cited by 24 publications
(14 citation statements)
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“…The main components of the sensor include a heating element (like a thermister) and temperature sensor (such as a pn junction), which are embedded in the porous block (gypsum or ceramic) and buried into the soil, measuring SWP or directly buried in soil, measuring SMC. Several thermal probe/heat pulse sensors have been described in literature with single, dual and multi probe designs [11]- [13], [23], [24]. A single-probe heat pulse (SPHP) soil moisture sensor based on a single npn bipolar junction transistor (BJT) was reported in [11], where the collector-base (CB) junction functioned as the heating element and the base-emitter (BE) junction served as the temperature sensor.…”
Section: ) Thermal Probe/heat Pulse Methodsmentioning
confidence: 99%
“…The main components of the sensor include a heating element (like a thermister) and temperature sensor (such as a pn junction), which are embedded in the porous block (gypsum or ceramic) and buried into the soil, measuring SWP or directly buried in soil, measuring SMC. Several thermal probe/heat pulse sensors have been described in literature with single, dual and multi probe designs [11]- [13], [23], [24]. A single-probe heat pulse (SPHP) soil moisture sensor based on a single npn bipolar junction transistor (BJT) was reported in [11], where the collector-base (CB) junction functioned as the heating element and the base-emitter (BE) junction served as the temperature sensor.…”
Section: ) Thermal Probe/heat Pulse Methodsmentioning
confidence: 99%
“…Nonetheless, they have not eliminated the need for probe insertion. For this purpose, a needle-free heat pulse sensor system has recently been developed [51]. Although this sensor has no needle and is inexpensive, burying it in the soil causes soil disturbance [51].…”
Section: Introductionmentioning
confidence: 99%
“…For this purpose, a needle-free heat pulse sensor system has recently been developed [51]. Although this sensor has no needle and is inexpensive, burying it in the soil causes soil disturbance [51]. None of these developments, however, have focused on non-invasive measurements of near surface soil water content.…”
Section: Introductionmentioning
confidence: 99%
“…Although many types of soil water content sensors have been developed (time-domain reflectometry [3], tensiometers, electrical resistance blocks, electromagnetic conductivity meters [4]), one of the most used low-cost soil water content sensors are the heat pulse probe sensors. The various types of heat pulse probes (button heat pulse probes (BHPP) [5,6], dual heat pulse probes (DHPP) [7], and single heat pulse probes (SHPP) [8]) operate based on heat capacity measurements.…”
Section: Introductionmentioning
confidence: 99%