Patent ID: 9047720
Filing Date: 2015-06-02
Classification: G01M,G07C

Abstract:
1. An external vehicle data collecting apparatus removably connected externally to an intravehicular network to which a plurality of electronic control units, hereinafter referred to as ECUs, are connected in a vehicle, for transmitting a plurality of data request signals for requesting driving parameter data representing operating states of various components of the vehicle while the vehicle is being driven, to at least one of the ECUs, receiving driving parameter data in response to the data request signals, and storing the received driving parameter data in a storage unit, the external vehicle data collecting apparatus comprising: a bus usage rate detecting unit connected to the intravehicular network and configured to detect a bus usage rate of the intravehicular network; a selecting and setting unit configured to select and set the data request signals to be transmitted to the at least one of the ECUs; a transmission interval setting unit configured to set equal transmission intervals in a predetermined period with respect to each of the data request signals based on the number of the data request signals set by the selecting and setting unit; and a request signal transmitting unit configured to transmit the data request signals at the equal transmission intervals if the bus usage rate is judged as being smaller than a first threshold value.