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Username Post: Hall Effect or Proximity Sensor, What's best?        (Topic#352975)
Nick P 
Dedicated Member
Posts: 6100
Nick P
Age: 71
Loc: De Queen, Arkansas
Reg: 10-15-03
09-13-18 04:10 PM - Post#2746072    

Might be a simple answer for some, but I just can't wrap my head around this. As I understand, a hall effect unit works on a magnetic signal applied in the proper location and polarity to either open the switch or close the switch and a proximity works much the same but is activated with a piece if iron or steel and depending upon the sensor opens or closes the switch.

I want to know if I can replace a currently used double throw double pole rocker/toggle switch with one of the above.

Thanks in advance.
_______________



 




wagonman100 
Super Senior Member
Posts: 14037
wagonman100
Loc: Baltimore, MD
Reg: 11-27-04
09-13-18 06:06 PM - Post#2746088    
    In response to Nick P

It might help if you tells us what the switch does. Thanks.

Jay
Some days it's not worth chewing through the restraints.

1999 Silverado Z71 4X4 extra-cab short bed
1983 Malibu Fauxmad - tubbed
1978 El Camino Kustomized
1972 Monte Carlo
1957 210 handyman wagon
1957 Nomad sport wagon


 
Nick P 
Dedicated Member
Posts: 6100
Nick P
Age: 71
Loc: De Queen, Arkansas
Reg: 10-15-03
09-14-18 06:49 AM - Post#2746134    
    In response to wagonman100

My apologies. Presently, a toggle switch activates a fuel door (tail light). It operates a mechanism to move the tail light out and around exposing the fuel cap (replace it with a Tanks Inc.) push through cap ala new Chevys'. The mechanism is electrically operated through a bank of relays and micro switches that change polarity for reversing the 12 V DC motor.




 
wagonman100 
Super Senior Member
Posts: 14037
wagonman100
Loc: Baltimore, MD
Reg: 11-27-04
09-14-18 07:00 PM - Post#2746187    
    In response to Nick P

With my limited knowledge of things electrical, I don’t think you’d be able to use either of those to replace the switch you have now. My guess is that you have to move the toggle in one direction to move the tail light out and the other direction to move it back in. Further I am guessing you want to be able to activate the mechanism from outside the car via a magnet. I don’t think the proximity switch or Hall effect switch has the capability to reverse the polarity to create the opposite motion of the mechanism. But I am no authority on the subject.

Jay
Some days it's not worth chewing through the restraints.

1999 Silverado Z71 4X4 extra-cab short bed
1983 Malibu Fauxmad - tubbed
1978 El Camino Kustomized
1972 Monte Carlo
1957 210 handyman wagon
1957 Nomad sport wagon


 
swbatt 
West Coast Show Support
Posts: 4072
swbatt
Reg: 03-25-01
09-17-18 03:18 AM - Post#2746400    
    In response to wagonman100

I think Jay is onto something.Hall is a proximity. Example would be as gas guage. To show a varying position. Besides a simple on/off. Unless you are planning to design a circuit to measure the position of the tail lights during it's path. You would need a way to calibrate as to when to stop and or reverse direction. Micro switches can be positioned to stop when opened or closed. Simple rocker would provide easy way to control direction. If I am getting what you expect the switching to do.





"Which do I prefer? Chess or sex? It depends on the position." - Spassky


 
Tony 
Founder & Grand PoohBah
Posts: 17729
Tony
Loc: Orange County CA.
Reg: 03-15-99
09-18-18 06:38 PM - Post#2746603    
    In response to swbatt

Jeez Steve did you really write that at 3AM?
Retirement getting you??

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drummertom 
Member
Posts: 1919
drummertom
Age: 65
Loc: Durham NC
Reg: 09-03-06
09-18-18 09:44 PM - Post#2746619    
    In response to Nick P

IMO, the easiest way would to use something like a power window switch. Push one way to open, the other way to close. All the polarity reversing is done with the switch, and it seems like you wouldn't be drawing enough amperage to need a relay. You can run 2 microswitches, one on each direction of travel, and wire them normally closed, so that when the mechanism reaches the end of its travel, it opens the microswitch, therefore opening the circuit and killing the voltage to the driver motor.


www.picturetrail.com/drummertom

"Well my time went so quickly. I went lickety spickley out to my ol' 55"


 
swbatt 
West Coast Show Support
Posts: 4072
swbatt
Reg: 03-25-01
09-20-18 08:07 PM - Post#2746797    
    In response to Tony

Tony,
HST, laying on the beach all day. Time stands still. I probably will be up at 3am Saturday to get to the cruise in time.


"Which do I prefer? Chess or sex? It depends on the position." - Spassky


 




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