Patent ID: 8425427
Filing Date: 2013-04-23
Classification: A61B

Abstract:
1. A device control device for controlling an on-vehicle device, said device control device comprising: a vital sign measurement unit configured to measure, in time series, time-series pulse wave data from a pulse wave obtained from a user of a pulse wave sensor; a parameter extraction unit configured to extract time-series parameter values for evaluating current statuses of the user based on the time-series pulse wave data measured by said vital sign measurement unit; a determination unit configured to determine whether a factor of a change in the time-series pulse wave data is a change in a health condition of the user or a change in an environment temperature around the user, based on the time-series parameter values extracted by said parameter extraction unit; and a control unit configured to control the on-vehicle device based on a result of the determination made by said determination unit, wherein said vital sign measurement unit includes: a component extraction unit configured to extract a maximum value and a minimum value of the time-series velocity plethysmogram data within a current first time range of the time-series velocity plethysmogram data, while shifting the current first time range in a time axis direction so as to repeat the extraction of the maximum value and the minimum value for multiple current first time ranges of the time-series velocity plethysmogram data; wherein said determination unit includes: