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1. (WO2017153477) SENSING DEVICE FOR SENSING A VALUE REPRESENTING A DOSE OF A DOSING DEVICE AND METHOD FOR OPERATING SAID DOSING DEVICE

Pub. No.:    WO/2017/153477    International Application No.:    PCT/EP2017/055454
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Thu Mar 09 00:59:59 CET 2017
IPC: G01F 11/02
A61M 5/145
A61M 5/168
G01F 15/00
Applicants: ROBERT BOSCH GMBH
Inventors: UTERMOEHLEN, Fabian
MERZ, Andreas
LEIDICH, Stefan
Title: SENSING DEVICE FOR SENSING A VALUE REPRESENTING A DOSE OF A DOSING DEVICE AND METHOD FOR OPERATING SAID DOSING DEVICE
Abstract:
The invention relates to a sensing device (100) for sensing a value (114) representing a dose of a dosing device (102), wherein the sensing device (100) has a stroke sensor (108) and an evaluating device (110). The stroke sensor (108) has a coil unit (116) and an electrically conducting interference unit (118) that is coupled to a piston (107) of the dosing device (102). The coil unit (116) comprises a first coil and at least one second coil. The coils are arranged distributed over a range of motion of the interference unit (118). The stroke sensor (108) is designed to represent a stroke of the piston (107) in a stroke signal (112), which stroke of the piston represents the dose. The evaluating device (110) is designed to determine the value (114) of the dose by using the stroke signal (112).