App112 en load-detection-washing-machines
0 likes374 views
The document discusses an inductive-potentiometric displacement sensor called ILU that measures load and unbalance in washing machines. It senses the depression of the suds container when loaded to determine the weight and amount of detergent needed. It also detects unbalance during spinning to optimize speed. The sensor integrates into a frictional damper compactly and is protected inside the machine. It provides an absolute position signal proportional to weight for static and dynamic processes to improve washing results, operating costs, and appliance life.
App112 en load-detection-washing-machines
- 1. A112_e Inductive-potentiometric displacement sensors vipSENSOR Load detection in washing machines The displacement sensor ILU (Integrated Load and The operation and washing results are optimized Unbalance Sensor) measures the depression of the through the load measurement. The displacement suds container when the washing machine is loaded sensor supplies an output signal proportional to the and its deviation during the spinning stage. Due to weight of washing. The sensor signal is converted by the inductive measurement principle, the sensor the electronics into a visible bar display for the user. provides an absolute position acquisition for static The momentary loading status is continuously and dynamic processes. The patented VIP sensor displayed visually, enabling the washing drum to be principle enables the integration of the sensor into a optimally and fully loaded. In parallel to this, the compact frictional damper. This gives he following amount of washing agent is calculated depending on additional advantages: the load and displayed. The operating costs are - The sensor is protected against ambient effects in reduced and the environment is also preserved. The the washing machine. sensing of unbalance enables the speed to be - The sensor is mounted in the washing machine with adapted during the spin-dry stage. The running of the frictional damper as an integrated constituent the appliance and the spin-drying performance are part in one working step. improved and the service life increased. - Simple fitting of the sensor system through implementation of application-specific interfaces. Werkfoto: SIEMENS SIEMENS Washing Machine Series Iq1430 SUSPA frictional damper with integrated displacement sensor RD 32 FKS
- 2. Application Measurement principle Functional principle The sensor forms a component with distributed electromagnetic parameters (R, L, C). It consists of a measuring coil with two connections, an intermediate layer and an electrode. The target (measuring ring) surrounds the measuring coil and Spring can be moved along the measuring coil without making physical contact with it. The measuring signal is tapped off from the electrode and evaluated Target Measuring range Sensor length with the aid of an operational amplifier, whereby the output signal UOUT is proportional to the position X of the target. Consequently, an optimized ratio of sensor length to measuring range is achieved and the sensor can be integrated into the spring/frictional damper system. Sensorelement Technical details - Measuring range: 50 mm - Reslution: 11 BIT Block wiring diagram Sensormodell Target ILU-50-O-10-SR ±X Reasons for the sensor selection - Statically and dynamically effective sensor - Measuring coil U OUT principle. - Economical vip electronics. Magnetic core - Sensor can be integrated into the frictional damper due to the short installed length. MICRO-EPSILON A member of micro-epsilon group. Koenigbacher Str. 15 Tel.: 0 85 42/1 68-0 info@micro-epsilon.com Certified DIN EN ISO 9001 : 2000 94496 Ortenburg / Germany Fax: 0 85 42/1 68 90 www.micro-epsilon.com Modifications reserved Y9781112