Vehicle data acquiring device and method based on active radio frequency identification

Abstract

The invention relates to a vehicle data acquiring device based on active radio frequency identification (RFID), comprising an active RFID label unit and a label activating and data acquiring unit, wherein the active RFID label unit specifies a work frequency channel itself when an activated signal is activated, and the specified work frequency channel sends vehicle data; the label activating and data acquiring unit sends the activated signal to activate the active RFID label unit, and the specified work frequency channel receives the vehicle data sent by the active RFID label unit; after the active RFID label unit is activated, a vehicle-mounted automatic diagnostic system data interface acquires the vehicle data; and the frequency of the work frequency channel of the active RFID label unit and the frequency of the activated signal are in different frequency bands. The invention also relates to a method for acquiring the vehicle data. The vehicle data acquiring device and method based on RFID have the beneficial effects that extra expenses are not needed in a data transmission process, the collision of a large amount of data in the same channel (frequency channel) during transmission is avoided, and vehicle data acquiring device and method based on RFID are stable and reliable.

Description

technical field [0001] The present invention relates to the dynamic acquisition of vehicle data, and more specifically relates to a vehicle data acquisition device and method based on active radio frequency identification. Background technique [0002] With the rapid development of automobile industry technology, sensor technology, and information technology, more and more sensors are integrated on the car; these sensors monitor the running state of the car in real time, so as to obtain the running state data of the car (for example, tire pressure data , driving speed, braking conditions, etc.). The driving computer on the car collects and analyzes these data; according to the results of the data analysis, it gives real-time warnings to the driver and controls the safe driving of the car. Due to the differences in grades and grades of cars, many trip computers only conduct real-time analysis of some important driving data without long-term statistical analysis; and due to ...

AI Technical Summary

Problems solved by technology

In the existing technical solution, the data of the car is continuously and real-time uploaded to the remote monitoring center through the 2G and 3G networks. In places with a large flow of people or during peak hours of calls, there will be data congestion, and the timely upload of data cannot be guaranteed; at the same time, a large amount of uploaded data not only occupies the spectrum resources of mobile communications; Fees are also a small expense

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