Developing an Online Measurement Device Based on Resistance Sensor for Measurement of Single Grain Moisture Content in Drying Process
The online measurement of moisture content for grains is an essential technology to realize real-time tracking and control, improve drying quality and reduce energy consumption of the drying process. To improve the measurement accuracy and reliability of the dynamic measurement process as well as ex...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-07-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/20/15/4102 |
| _version_ | 1797561547080335360 |
|---|---|
| author | Chengjie Li Bin Li Junying Huang Changyou Li |
| author_facet | Chengjie Li Bin Li Junying Huang Changyou Li |
| author_sort | Chengjie Li |
| collection | DOAJ |
| description | The online measurement of moisture content for grains is an essential technology to realize real-time tracking and control, improve drying quality and reduce energy consumption of the drying process. To improve the measurement accuracy and reliability of the dynamic measurement process as well as expand the application scope of the device, the present work constructed an experimental equipment for determining dynamic resistance characteristics of a single grain. The relations between moisture content and real-time resistance waveform were revealed, and an analytical calculation method of peak value and peak area of waveform was proposed, which correctly revealed the electrical measurement properties of grain. The results demonstrated that the gap width between the electrodes had large influence on the sensor’s performance. Moreover, an online measuring device was developed based on the experimental analysis and calculation method, and the test results in both lab and field for different grains showed that online real-time absolute measurement error are within ±0.5% in the varied moisture content (10–35%w.b.) and the temperature (−20–50 °C). The main results and the developed device might provide technical support for developing intelligent grain drying equipment. |
| first_indexed | 2024-03-10T18:16:27Z |
| format | Article |
| id | doaj.art-e9eab2f3c52e4cb5a3a8e6bffe14df61 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T18:16:27Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-e9eab2f3c52e4cb5a3a8e6bffe14df612023-11-20T07:42:06ZengMDPI AGSensors1424-82202020-07-012015410210.3390/s20154102Developing an Online Measurement Device Based on Resistance Sensor for Measurement of Single Grain Moisture Content in Drying ProcessChengjie Li0Bin Li1Junying Huang2Changyou Li3College of Engineering, South China Agricultural University, Guangzhou 510642, ChinaCollege of Engineering, South China Agricultural University, Guangzhou 510642, ChinaCollege of Engineering, South China Agricultural University, Guangzhou 510642, ChinaCollege of Engineering, South China Agricultural University, Guangzhou 510642, ChinaThe online measurement of moisture content for grains is an essential technology to realize real-time tracking and control, improve drying quality and reduce energy consumption of the drying process. To improve the measurement accuracy and reliability of the dynamic measurement process as well as expand the application scope of the device, the present work constructed an experimental equipment for determining dynamic resistance characteristics of a single grain. The relations between moisture content and real-time resistance waveform were revealed, and an analytical calculation method of peak value and peak area of waveform was proposed, which correctly revealed the electrical measurement properties of grain. The results demonstrated that the gap width between the electrodes had large influence on the sensor’s performance. Moreover, an online measuring device was developed based on the experimental analysis and calculation method, and the test results in both lab and field for different grains showed that online real-time absolute measurement error are within ±0.5% in the varied moisture content (10–35%w.b.) and the temperature (−20–50 °C). The main results and the developed device might provide technical support for developing intelligent grain drying equipment.https://www.mdpi.com/1424-8220/20/15/4102graindryingmoisture contentsensorsonline measurement device |
| spellingShingle | Chengjie Li Bin Li Junying Huang Changyou Li Developing an Online Measurement Device Based on Resistance Sensor for Measurement of Single Grain Moisture Content in Drying Process Sensors grain drying moisture content sensors online measurement device |
| title | Developing an Online Measurement Device Based on Resistance Sensor for Measurement of Single Grain Moisture Content in Drying Process |
| title_full | Developing an Online Measurement Device Based on Resistance Sensor for Measurement of Single Grain Moisture Content in Drying Process |
| title_fullStr | Developing an Online Measurement Device Based on Resistance Sensor for Measurement of Single Grain Moisture Content in Drying Process |
| title_full_unstemmed | Developing an Online Measurement Device Based on Resistance Sensor for Measurement of Single Grain Moisture Content in Drying Process |
| title_short | Developing an Online Measurement Device Based on Resistance Sensor for Measurement of Single Grain Moisture Content in Drying Process |
| title_sort | developing an online measurement device based on resistance sensor for measurement of single grain moisture content in drying process |
| topic | grain drying moisture content sensors online measurement device |
| url | https://www.mdpi.com/1424-8220/20/15/4102 |
| work_keys_str_mv | AT chengjieli developinganonlinemeasurementdevicebasedonresistancesensorformeasurementofsinglegrainmoisturecontentindryingprocess AT binli developinganonlinemeasurementdevicebasedonresistancesensorformeasurementofsinglegrainmoisturecontentindryingprocess AT junyinghuang developinganonlinemeasurementdevicebasedonresistancesensorformeasurementofsinglegrainmoisturecontentindryingprocess AT changyouli developinganonlinemeasurementdevicebasedonresistancesensorformeasurementofsinglegrainmoisturecontentindryingprocess |