Determination of Vehicle Limit and Safe Tractive Velocity using LTE Network In Vehicle Telemetry



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INTRODUCTION:

In our day to day life we all enjoy driving, it is great fun, but not always everything goes to plan and then accidents occur because of human errors. Vehicle drivers are having a problem understanding the basic physics involved in the everyday use of their vehicles that many nasty accidents occur that need never have happened,people normally over judge their skills and cars limits and end up losing control of their vehicles and crashing.This is due to the fact many drivers aren’t aware of the road conditions ahead. Thus knowing the road conditions ahead will save many lives. Therefore this calls for mapping the road ahead turn by turn and alerting the driver for e.g. about road curvature, elevation, banking, surface conditions etc. The mapping of road can be done by an ultrasonic sensor and a gyro sensor installed in the car, the sensors relay data to ECU of the car and those
data are then transmitted through LTE device to LTE network’s remote IMS application server for mapping and analysis. Thus an individual’s car’s limit can easily be calculated and the driver can be alerted about the cars limit for each and every patch of road by receiving back the processed and analyzed data and showing on the screen.


ROAD ASSIST SYSTEM

The mapping can be done by the array of different sensors in the vehicle, which measure different parameters as cited above in Instrumentations and . The Driver of the vehicle using this system will be updated about the road the vehicle is approaching, thus alerting the driver about different aspects like type of turn, elevation, surface condition, speed limit, curvature, banking angle etc.
From all the data gathered by the vehicle acquisition system statistics of each and every inch of road can be generated and updated to the wireless network server. Also in this system a vehicle’s dynamics and stability plays a crucial role,
determining the vehicle’s stability and limits for the approaching road.


Vehicle Telemetry


These days almost all the modern vehicles are fitted with host of sensors, which are used to monitor each and every parameter of the vehicle.Now these sensors are connected to the ECU of the vehicle via CAN (Controller Area Network).
The ECU of the vehicle analyses the data signal coming from the sensors present and check whether all the relevant vehicle system parameters are under specified limits or not, if not then the ECU generates something known as Diagnostic Trouble Codes (DTCs) which is stored inside ECU’s register stack and other data goes to waste. The effective utilization of data is not taking place. This was about the existing Automotive Sensor technology.The new sensors which we are adding is connected to the CAN’s Chassis and Network module. This also might require a quick reprogramming of the ECU so that it recognizes the new sensors added to the network and also accepts and analyse the data coming from it.


LTE Network


For telemetry of the vehicle LTE network will be used, as the amount of data
acquired from the sensors of the vehicle will be pretty high and to transmit that much amount of data for analysis and storage will require lot of bandwidth, which is not achieved by GSM, CDMA thus LTE network is proposed. Long Term Evolution (LTE) is a new radio technology that will allow operators to achieve even
higher peak throughputs than HSPA+ in higher spectrum bandwidth.
LTE is part of the GSM evolutionary path beyond 3G technology, following EDGE, UMTS, HSPA and HSPA Evolution. The overall objective of using LTE is that it provides an extremely high performance radio-access technology that offers full vehicular speed mobility and that can readily coexist with HSPA and earlier
networks. LTE and its devices are based on Open Wireless Architecture (OWA) that gives it portability,scalability and ease of implementation.

Advantages of LTE Network




->LTE device transmitter is placed under the dashboard due to which

it dosen’t require any additional space .


->It holds very high bandwidth which ranges from 100 megabits/sec

to 1 gigabits/sec.

->It also has full vehicular mobility.

->Open Wireless Architecture(OWA) gives ease of impletation and

portability.


CONCLUSION


This system will provide the driver about the information of road and warn about the limits of the individual vehicle, taking into consideration it’s dynamics for the road approaching well in advance. Implementation of this system in the vehicles will help the drivers to learn and practice safe driving habits, and keep him alert about the road ahead and hence prevent accidents. The road mapping done through the different sensors and through LTE network will not only help in navigation and road information but may assist the GPS to download high resolution maps and keep the driver updated about the road ahead as LTE will allow to achieve even higher peak throughputs, bandwidth and also will be
more efficient than any GPRS services implemented for any Wireless Sensor Network application.