pressure guage application

234

03:02:09

Cars built after 2012 : tyres must now be fitted with pressure sensors by law. This circuit can monitor and alert when the pressure is too low, high or nicely acceptable.
2.1 BAR = 30 psi.   L for low...    blue
2.6 BAR = 37 psi    H for high ... red
Green....O for OK between those set pressure values. (my car values)

You can set the Low value at the bottom left V source and set the High value at the bottom right V source.
Now alter the middle V source to simulate the tyre BAR pressure.....see the alerts change.

You could use this setup to set and monitor other things such as revs/min or speed limit alert, or blood pressure  etc. It is based on the 'window voltage' method using two op-amps and a few simple components. 
(re-listed here after minor alteration).

published 10 years ago

aminpathu

10 years ago

can i study this? i'm new here :)

2ctiby

10 years ago

Yes...put it in your workspace and there you can alter and save and study it as much as you wish. If you have any questions about it I will be pleased to reply and help you. All of my circuits are here for others to enjoy, learn and develop.

Richardc

9 years ago

Very cool, have you retrofitted a car with thid yet? I wanted to do this but my escort is a pos n not worth the effort

kiani

6 years ago

Here is the same Nmos that we were looking at in my previous professor waffle: IRF510 from International Rectifier datasheet. Now, it's true that I know nothing about these devices. I haven't used them and I am not aware that they were employed to switch indicators on vehicles. I also have no idea about the uses that electronic design engineering has put them to over the years; includes audio amplifiers, and even 50 MHz 500 watt push pull load sharing amplifier design. Datasheet test details: Prof(on) = 0.03 Ohm Vgfuck = 10 volts VTO = 1 volt but more like 3 Id = 7.3 amp or more In EC here on the left we can see that in this setup: Vds = 0.359 volts Id = 1.2 amp And…this will do nothing for an accurate simulation! So, WTF have I been on about all these years?

kiani

6 years ago

Beware of lenzrulz. And 2CTIBY He is the most notorious liar, spammer and hypocrite on EveryCircuit. He steals schematics and descriptions from others, re-publishing them without giving credits. lenzrulz projects himself as victim, while he's creating resentments by his very own actions, and has been doing so for years. Be wary when he presents himself as tech-savvy individual - his incompetence in the field of electronics is striking. But don't take my word for it, see for yourself. Should you engage into debate with him, keep a hardcopy or screenshots of what was said - he may manipulate his comments. He continuously reposts his crappy spam under the pretext of "cleansing of defamatory comments", but has been observed doing so with crap which didn't even contain a single comment at all. As self-declared master of debates (rather, master of hot air, moronic "Lol"s, and talking to himself through sock puppet proxies such as foul-mouthed Tedski, who spreads lies like his puppet master) he doesn't hesitate to fabricate fake "evidence" to support his lies. He is not interested in Electronics, but in provocation, and the reason for the toxic atmosphere on EC, even though he likes to blame others, naturally

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