Patent ID: 9250227
Filing Date: 2016-02-02
CPC Classification: A61B,B60W,G01N

Claim Text:
1. A system operable to determine a future point of time when a user can operate a vehicle, at which the alcohol concentration in blood of a user is less than a threshold value, the system comprises an alcohol sensor operable to detect a current alcohol concentration in blood of the user, and a portable apparatus, wherein the alcohol sensor, and the portable apparatus each independently comprise a wireless communication device, wherein a first wireless communication device in the alcohol sensor is operable to wirelessly transmit the current alcohol concentration to a second wireless communication device in the portable apparatus, and wherein the portable apparatus further comprises a controller, a clock, and a memory, wherein the controller is connected to the second wireless communication device, the clock, and the memory, and the controller is operable to store the current alcohol concentration and a time stamp from the clock in the memory, and wherein the controller is connected to a calculation device operable to calculate the future point of time in dependence of the current alcohol concentration detected by the alcohol sensor and of a known alcohol burn rate of the user stored in the memory means, or an alcohol burn rate calculated by the calculation means in dependence of characteristics of the user which have an influence on the alcohol burn rate, wherein said characteristics of the user are selected from the group consisting of sex and weight and combinations thereof, and wherein the alcohol sensor further comprises a device configured to receive exhalation air from the user, and a fuel cell, and wherein the calculation device is operable to be self-calibrated during use through software comprising formulas that are parameterized to the user.