A User-Configurable Acceleration Data Acquisition Method for Vehicles
A technology of data acquisition and acceleration, applied in the field of sensors, can solve the problems of power-off storage and single function of acceleration acquisition method
Active Publication Date: 2021-06-04
JILIN UNIV
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Problems solved by technology
[0005] The purpose of the present invention is to solve the single function of the acceleration acquisition method in the prior art, which cannot flexibly configure the hardware to meet the needs of users, and proposes a user-configurable vehicle acceleration data acquisition method, which not only allows users to meet specific needs Dynamic configuration of filter coefficient, frequency screening range, CAN communication baud rate, message ID and other functions, and these information can be saved after power-off, no need to reconfigure the next time you use it
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[0049] The present invention is described in detail below in conjunction with accompanying drawing:
[0050] refer to figure 1 , signal flow relationship diagram, the main function, timer interrupt function service and CAN receiving interrupt service are running in the acceleration acquisition hardware, the host computer is the CAN analyzer software installed on the computer, and the hardware through USB to CAN is used as a bridge for information transmission , the user can send configuration commands and receive feedback commands from acceleration data acquisition hardware and acceleration signals on the host computer. The computer is connected to the USB-to-CAN hardware through a USB cable, and the acceleration acquisition hardware is connected to the USB-to-CAN hardware through a CAN twisted pair.
[0051] refer to figure 2 , the main function operation steps are as follows:
[0052]A. Get the access address of the non-volatile storage medium that stores the user config...
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The invention discloses a user-configurable vehicle acceleration data collection method, aiming to solve the problem that the vehicle acceleration sensor in the prior art has few functions and cannot flexibly configure hardware to meet the needs of users. The main function, timer interrupt function service and CAN receiving interrupt service are running in the acceleration acquisition hardware. The upper computer CAN analyzer software, the user can send configuration commands and receive feedback commands and acceleration signals on the upper computer software. The computer is connected to the USB-to-CAN hardware through a USB cable, and the acceleration acquisition hardware is connected to the USB-to-CAN hardware through a CAN twisted pair. Through the CAN bus, the user can configure a variety of functions according to the organization and interpretation of the configuration commands, such as changing the filter coefficient, sampling frequency, frequency range of signal output, CAN communication baud rate, working mode, etc. It can be saved when power off, so you don’t need to reconfigure it when you use it next time.
Description
technical field [0001] The present invention relates to the technical field of sensors, and mainly relates to a method for collecting acceleration data. More specifically, the present invention relates to a user-configurable method for collecting acceleration data for vehicles. Background technique [0002] Acceleration is an important physical quantity to perceive the running state of the car. It is a key physical quantity to reflect the real-time running state of the car in the electronic control system of the car and the test evaluation of the ride comfort of the car. It is very convenient. For example, the user may only care about the acceleration in a specific frequency range, or want to filter the original acceleration to different degrees. At this time, only need to send some configuration commands at the CAN communication interface to achieve the desired effect of the user, eliminating the need for The user can further filter the collected acceleration; the user can...
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IPC IPC(8): G05B19/042
Inventor 曾小华钱琦峰宋大凤李广含牛超凡张轩铭李晓建高福旺
Owner JILIN UNIV