OK I'm new, I'm not really up on electronics, I learn fast and can build things. Anyway i read a similar thread on here about converting an AC sine wave to DC square wave http://forum.allaboutcircuits.com/showthread.php?t=5007
I'm looking to convert a signal from an automotive ABS sensor which should be AC sine wave, to a DC square wave similar to a tach input, specifically switching between 0V and 3.5-12V. I have found this which shows basically the differences(Fig 1.4 shows what I believe to be the output and Fig 1.5 shows what i need) http://www.picotech.com/auto/tutorials/sensors-actuators.html
Someone told me that I could use a diode to get the result, I'm not so sure after reading the 1st linked thread. Basically I built a highly modified FWD turbo car as seen here http://www.cardomain.com/ride/2641801
I have an EBoost2 electronic boost controller which can schedule boost by RPM. I have found that the factory speed sensor output(basically Fig 1.5 in the 2nd link) is similar to a 4cylinder tach signal and can be used for speed based boost. The only problem with this is that is is located on the front drive wheels, so using in using it, wheel spin will make the MPH go up and keep ramping boost up(which is a huge negative for me as it will make the wheels spin worse). So I would like to have a speed sensor on one rear wheel so this will virtually eliminate this issue and be better all around. While my car does not have ABS, it is an option so I was thinking to grab a rear ABS setup(sensor and hub) and use the signal to hook to the tach input on the boost controller. Then I found the signals were different so i was looking for an easy/cheap way to make it work/convert the signal.
If this is not a good idea i also was thinking of just retrofitting a proxy sensor and possibly a magnet to the hub if needed.
Any and all discussion is appreciated, just remember I'm not informed on these subjects so i would appreciate a dumbed down version. Sorry for the long rant and thanks in advance Matt
I'm looking to convert a signal from an automotive ABS sensor which should be AC sine wave, to a DC square wave similar to a tach input, specifically switching between 0V and 3.5-12V. I have found this which shows basically the differences(Fig 1.4 shows what I believe to be the output and Fig 1.5 shows what i need) http://www.picotech.com/auto/tutorials/sensors-actuators.html
Someone told me that I could use a diode to get the result, I'm not so sure after reading the 1st linked thread. Basically I built a highly modified FWD turbo car as seen here http://www.cardomain.com/ride/2641801
I have an EBoost2 electronic boost controller which can schedule boost by RPM. I have found that the factory speed sensor output(basically Fig 1.5 in the 2nd link) is similar to a 4cylinder tach signal and can be used for speed based boost. The only problem with this is that is is located on the front drive wheels, so using in using it, wheel spin will make the MPH go up and keep ramping boost up(which is a huge negative for me as it will make the wheels spin worse). So I would like to have a speed sensor on one rear wheel so this will virtually eliminate this issue and be better all around. While my car does not have ABS, it is an option so I was thinking to grab a rear ABS setup(sensor and hub) and use the signal to hook to the tach input on the boost controller. Then I found the signals were different so i was looking for an easy/cheap way to make it work/convert the signal.
If this is not a good idea i also was thinking of just retrofitting a proxy sensor and possibly a magnet to the hub if needed.
Any and all discussion is appreciated, just remember I'm not informed on these subjects so i would appreciate a dumbed down version. Sorry for the long rant and thanks in advance Matt