Hi all, I’m hoping some of you may be able to help me with a project my employer has set me. It’s been many years since I have dabbled with electronics, and to be honest this is way beyond my capabilities.
The brief, I have a railway trailer, now this trailer requires lights at each end, 2 white and 2 red. I have a 12v DC battery source. The lights need to display as follows,
When stationary all 4 red lights on, 2 at one end 2 at the other. When trailer moves forward the lights switch to 2 white in the direction of travel and 2 red at the rear. If it changes direction on track then the lights must swap. So basically when it’s travelling it’s always displaying 2 white lights in the direction of travel and 2 reds at the rear, and when stationary switch to all 4 red lights.
Currently it does this with a Hall Effect sensor and a magnet mounted on one of the rail wheels, the sensor is wired into a box. Here where I hit a problem. The box is resin filled so I can’t reverse engineer it. And having limited electronic knowledge I can’t work out how it works.
The Hall Effect sensor is a Honeywell SR130 18-1.
The company we buy these switching boxes from has gone bust and we have yet to find anyone who makes them elsewhere, hence me being the resident auto spark has been lumbered with the task of creating our own version.
Any help greatly appreciated. Thanks in advance people.
The brief, I have a railway trailer, now this trailer requires lights at each end, 2 white and 2 red. I have a 12v DC battery source. The lights need to display as follows,
When stationary all 4 red lights on, 2 at one end 2 at the other. When trailer moves forward the lights switch to 2 white in the direction of travel and 2 red at the rear. If it changes direction on track then the lights must swap. So basically when it’s travelling it’s always displaying 2 white lights in the direction of travel and 2 reds at the rear, and when stationary switch to all 4 red lights.
Currently it does this with a Hall Effect sensor and a magnet mounted on one of the rail wheels, the sensor is wired into a box. Here where I hit a problem. The box is resin filled so I can’t reverse engineer it. And having limited electronic knowledge I can’t work out how it works.
The Hall Effect sensor is a Honeywell SR130 18-1.
The company we buy these switching boxes from has gone bust and we have yet to find anyone who makes them elsewhere, hence me being the resident auto spark has been lumbered with the task of creating our own version.
Any help greatly appreciated. Thanks in advance people.