Friday, 1 April 2016

ECU Software development V Model


  • ECU development take approximately 60% of time of the ECU development.
  • V model is use for the ECU software development.
  • (It is same as general software development model like waterfall model, spiral model etc.)
  • V model specify testing plan in early phase, so it save both time and money.

Basic thing in V Model is Specification - Implementation - Testing.




In model there are the following phases.
1. Requirement.
2. System Design.
3. ECU specification and software specification.
4. Implementation of software code and auto-generation from the model as in MTALAB simulink.
5. Unit Testing in this individual ECU's are tested.
6. In Sub-System Testing integration/interface of the different ECUs are tested.
7. In the System Testing complete system is tested with different combination of inputs.
8. In last complete vehicle is validated.

so its completely based on the verification and validation.







ECU(Electronics control unit) and OEM DETAILS.

Key Elements of ECU's.

1. core (Micro controller).

2. Memory.

3. Inputs. (Supply voltage, digital input, analog input(used ADC for conversion as ECU process only digital data)) .

4. Output (Analog output, logic output).

Design of automotive ECU is based on the V model.

ECU is developed by the tier 1 supplier based on the requirement(specification) from the OEM(Original Equipment manufacturer).

OEMs in India

  • Ashok Leyland : Chennai (TN)
  • Bajaj :  Pune(MH)
  • Bharat Benz:  Chennai(TN)
  • Hero: Dehli.
  • Hindustan : Kolkata
  • Eicher : Gurgaon
  • Force : Pune
  • Maruti : Dehli
  • HONDA MOTORS : Greater Noida (UP)
  • Mahindra:  Mumbai
  • LML (Lohia Machines Limited: Scooter) : Kanpur (UP)
  • TATA : Mumbai
and many more.


Thursday, 31 March 2016

ECU(Electronics Control Unit) Design Cycle.

1. ECU in auto mobile is basically an embedded device (computer device used for program for decision making based on the information from sensors).

2. ECU gets its signal from the various sensors placed in the various parts of the car and processed the signal and perform some actuation(Actions) thorough actuators (Machines, Motors etc).

3. Basically whole operation consists of the three module :
    A. Sensors module.
    B. Control/Processor module
    C. Actuator Module.

4. ECU is the made up of various electronics components and software.

A low end car contains at least 30 to 40 ECU's and high end car may contains more than the 100-150 ECUs.

As there are the number of  the ECU's so it's important to have proper communication between this ECU networking between ECU also play very important role in the design of complete car system.

So by ECU we are replacing most of the mechanical parts of the vehicle with the electronics devices as a result of this is that car weight will reduced and it increased the car mileage and controlling is ver fast as no human intervention is requires to control any system of car

Example of engine ECU which control the fuel injection, ECU for the breaking(ABS) of car,
ECU for the air bags in the car, ECU for the electronic stability program and many more ECU's for safety and convenience.


Thanks.


Starting Information

Hi,

Every  one basic aim of this blog is to provide basic understanding of the Automotive electronics.

As this field is already emerging field and mainly here we talk about the sensors technologies, computing power, safety standards, networking, actuators, automotive specific micro controller like (cortex M3 etc.) ,ECU  design and use of software and hardware and some MATLAB based model technologies and also about the role Digital signal processing and control system in the field of automotive electronics and many more thing in the subsequent posts.

Thankyou