A vehicle-mounted assisted driving prompting device and method with self-adaptive function

Abstract

The invention discloses a vehicle-mounted self-diagnostic system OBD based on a vehicle-mounted self-diagnosis system OBD with an adaptive function of the vehicle-mounted auxiliary driving prompt device and method. The vehicle-mounted OBD collects vehicle conditions including gear position, vehicle speed, vehicle acceleration, accelerator opening and instantaneous fuel consumption. Data, the communication module receives the vehicle condition data and stores the vehicle condition data in the storage unit; the storage unit marks the vehicle condition data as new data after receiving the vehicle condition data, and the calculation module receives the vehicle condition data sample group, identifies and updates the engine fuel consumption equation, and according to the current engine fuel consumption The optimal gear position and the optimal throttle opening are calculated from the equation and the vehicle condition data, and the prompt signal is generated in combination with the prompt rules and transmitted to the display device; the invention does not need to input the engine parameters of the vehicle before use, and can be performed when the engine model of the vehicle is unknown. The judgment of the best economical driving gear and the opening of the accelerator can quickly adjust the prompting rules, thereby ensuring the correctness of the prompting rules.

Description

technical field [0001] The invention belongs to the technical field of automobile economical assisted driving, and in particular relates to an on-board self-diagnostic system OBD (On-Board Diagnostic)-based on-board self-diagnostic system OBD (On-Board Diagnostic) based on an on-board assisted driving prompt device with an adaptive function and an assisted driving method. Background technique [0002] The on-board self-diagnosis system OBD is a vehicle fault diagnosis device, which can read vehicle condition data including engine speed, throttle opening, instantaneous fuel consumption rate, etc. by connecting to the vehicle ECU. The on-board gear shift prompt device can calculate and determine the optimal driving gear and throttle opening by receiving real-time vehicle condition data in the OBD, and provide reasonable driving suggestions for the driver, so as to achieve the purpose of economical driving. [0003] Chinese patent publication number CN104175875B proposes a shif...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent publication number CN104175875B proposes a shift prompt device based on the on-board self-diagnostic system OBD. The device calculates and corrects the optimal shift points under the three driving modes by collecting OBD data, but the device only It can give shift suggestions under critical shift conditions, that is, when the driving gear height is unreasonable, it can suggest shifts, and the accuracy of the tips is low

This shifting schedule is highly dependent on the accuracy of the experimental data, and with the use, aging and maintenance of the car, its optimal shifting schedule will also change, so the shifting reminder is poorly adaptable to the state of the car , when the car has been used for a period of time, the gear shift reminder cannot provide optimal driving advice

At the same time, because the shift prompter needs to provide the experimental data of the engine before use, it is necessary to formulate a separate calculation program for each different car, and the versatility is limited

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