Diagnostics method for device for controlling a motor vehicle powered by an electric motor, and associated device
A technology for control devices and motor vehicles, applied to mechanical control devices, electrical devices, electric vehicles, etc., can solve problems such as interference, information communication bus interference diagnosis function, information communication bus takes a lot of time, etc.
Active Publication Date: 2014-11-05
VTESCO TECH GMBH
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Unfortunately, the deactivation of the telematics bus and its activation are actions that take a lot of time, and the user is not prepared to wait the time required to perform these test steps
In addition, the deactivation of the telematics bus interferes not only with the diagnostic functions, but also with all devices connected to said telematics bus.
Method used
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[0034] The method according to the invention utilizes a number of hardware or software components and in the ensuing description will refer to a number of actuators. In the description, actions may be presented to a device or to a program; this indicates that these actions are performed by the microprocessor of the device or the device including the program, which is then controlled by instruction codes recorded in the memory of the device . These instruction codes allow implementing the components of the device and thus the actions taken.
[0035] figure 2 represents an embodiment of the invention which is by no means limiting in itself.
[0036] An electronic control unit (500) of a control device of a motor vehicle with an electric propulsion motor (not represented) is connected to a telematics bus (Tx, Rx) that allows said electronic control unit (500 ) controls an electric motor of said vehicle. In the examples described hereinafter, the information communication bus...
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The subject of the present invention is a diagnostics method for a device for controlling a motor vehicle powered by an electric motor, comprising: - an electronic control unit (500), - a communications bus (Tx; Rx) connecting at least the electronic control unit (500) and a driver for controlling the electric motor, - a driver (510) for controlling the communications bus (Tx; Rx) characterized in that it involves the following steps: - having the electronic control unit (500) inhibit the driver (510) that controls the communications bus (Tx; Rx), - having the electronic control unit (500) emit a frame of signals on the communications bus (Tx; Rx), - the reading by the electronic control unit (500) of the signals passing over the communications bus (Tx; Rx), - establishing a positive security diagnosis if the frame of signals is not read by the electronic control unit (500). The invention also relates to the associated device.
Description
field of invention [0001] The invention is applicable in the field of motor actuation, and more precisely in the field of motor actuation of electric motor vehicles. Still more particularly, the invention relates to diagnostic and safety assurance components of the control device of the propulsion motor of said electric vehicle. Background technique [0002] Electric vehicles are increasingly common on the roads today. It is logical to expect the same level of safety to be exhibited by motor vehicles equipped with internal combustion engines which constitute the vast majority of the present motor vehicle population. These motor vehicles equipped with internal combustion engines are currently equipped with electronic motor control. With the help of information from various sensors, the electronic computer integrated on the electronic motor control device determines in real time the optimum operating conditions for the internal combustion engine, and it acts on the various a...
Claims
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IPC IPC(8): B60L11/18G06F11/22G06F11/277G05G1/405
CPCB60L3/00G06F11/221Y02T90/16B60L3/0084
Inventor A·冈萨雷斯J·帕基耶S·瓦莱斯
Owner VTESCO TECH GMBH