A mechanical toy car (without electronics) should turn on detecting obstruction


by vivsarda14
Tags: detecting, electronics, mechanical, obstruction, turn
vivsarda14
vivsarda14 is offline
#1
Jul11-10, 01:05 AM
P: 3
HI all.
I wanted to make a toy car (except battery and motor completely mechanical) which should turn and move along on detecting an obstruction. I saw such a toy car but unable to get the design. Please help guys...
Phys.Org News Partner Science news on Phys.org
SensaBubble: It's a bubble, but not as we know it (w/ video)
The hemihelix: Scientists discover a new shape using rubber bands (w/ video)
Microbes provide insights into evolution of human language
xxChrisxx
xxChrisxx is offline
#2
Jul11-10, 03:44 AM
P: 2,032
Not really feasabile to do it by mechanical only. You can do a mechanically programmed car that will move in a certain pattern but not one that will adapt.

The problem boils down to:

Input -> Signal interpretation -> Action

Using purely mechanical means input and signal interpretation are incredibly difficult (read nearly impossible) to achieve.

The action part is really easy, that could be done by rotating a steering wheel by hydraulics or pneumatics or an electric motor that turns a wheel.
vivsarda14
vivsarda14 is offline
#3
Jul11-10, 05:18 AM
P: 3
Dude Even i was amazed but our sir showed us that and told it is done using some gears and the toy costs less than 100 rupees. It is possible dude ...

StartlerBoy
StartlerBoy is offline
#4
Jul11-10, 05:22 AM
P: 15

A mechanical toy car (without electronics) should turn on detecting obstruction


Let us know the details then.
xxChrisxx
xxChrisxx is offline
#5
Jul11-10, 06:18 AM
P: 2,032
Quote Quote by vivsarda14 View Post
Dude Even i was amazed but our sir showed us that and told it is done using some gears and the toy costs less than 100 rupees. It is possible dude ...
When you say 'detecting an obstruction'. Can the car touch the obstruction? If yes then it can be done mechanically, if not then it can't.

I immedately thought of avoiding the obstuction, which requires a non contact sensor. As such the sensor itsself will have an electrical output.
vivsarda14
vivsarda14 is offline
#6
Jul11-10, 07:45 AM
P: 3
It will touch and then turn ...
Do u no how???
KalamMekhar
KalamMekhar is offline
#7
Jul11-10, 08:19 AM
P: 27
Some sort of leg out front that when it touches an obstruction, will push the car backwards and the front wheels to the side enough times to get it out of the obstructions way. The foot would run all the time (connected to the drive shaft).


Register to reply

Related Discussions
How much electronics/chemistry does a Mechanical Engineer have to know? Academic Guidance 0
A mechanical engineering student hating mechanical design Academic Guidance 14
Rate Of Turn and Turn Radius of an aircraft Introductory Physics Homework 2
Electronics to mechanical Electrical Engineering 12
Surgery Obstruction Groups Linear & Abstract Algebra 9