P6.5 - The Charge Sensing Device Approach - Sensor for Non-Conductive Materials Using the Native Electrostatic Charge
- SENSOR+TEST Conferences 2011
2011-06-07 - 2011-06-09
- Proceedings SENSOR 2011
- P6 - Technology, Materials
- R. Brunsch, U. Neumann - Sentex Chemnitz GmbH (Germany)
- 811 - 814
Non-conductors have the property of becoming charged electrostatically by friction. Although this charge interferes in industrial processes in general, it can not be completely eliminated.
Until now, applications only detected the mere presence of the charge. The Sentex innovation goes far beyond these tasks and measures the stochastic distributed charge and changes on the material. There are many correlations between the charge / charge distribution and specific physical properties of high technical relevance.Properties such as speed, length, and acceleration can be measured contact-free already, without the disadvantages of optical measurement systems. Likewise, statements on the effects of static inhibitors, the permanence of coatings or the accuracy of dosages are possible.
Starting with basic signal theory research, this problem was solved step by step and lead to mass production readiness. Using Sentex sensors, many problems can be solved on an industrial scale today, that where only manageable with expensive laboratory procedures. First use case is the highly accurate, completely contact-free measurement of speed and length of textile yarns with the Sentex-thread sensor. Further research topics are currently in the marine and agriculture. The list is far from complete since new questions and possible applications are added frequently.