Garage door sensor eye

[bobj49f2]

This question is for my business shop. Most times I work alone in the shop. I have a separate office. I installed a door sensor on the outer office door that sets off a obnoxious chime in the shop to let me know if some one walks into the office from the outside. If I'm working in the office and have the overhead door open I can't tell if some one walks into my shop. Also, my shop is "L" shaped and at times I will be working in back and can't tell if some one walks into the shop. This also happens when I'm inside a project on the opposite side not facing the door.

What I would like to know is there some way to splice into the overhead door sensor circuitry to activate a relay? When the oor is open and the beam is broke on the sensor eyes the light on the door opener comes on and stays on for about five minutes. I could just wire a buzzer to the light but then it would go off for the full five minutes. I could add a timer that would cut off after a short period of time but I really don't want to go through that. I don't know the circuitry of the sensor eye system, does some one have a drawing they can post? I was thinking I would install a low voltage relay in the eye circuit and have the eye activate it for a split second to sound an alarm.

Any other suggestions?

 

[nehog]

At least with the openers I have (Sears, don't know who really made them however) the lights turn on whenever someone breaks the beam. I'd simply wire a chime to the light so it chimed whenever the light came on. Only trick would be to get it to chime one time and not constantly, but I'm sure that would be not difficult.

 

[SgtRauksauff]

What about just adding another sensor at the bottom of the garage door, that triggers the existing obnoxious chime?

Or, splitting the output of the existing sensor, so that it goes to the chime AND to the garage door? This way, if someone walks or drives through it, the chime sounds. if the door's closing, and it gets tripped, the chime sounds and the door opens back up. All you get is extra chimes, but not a continuous chime if you were to tie it into the output of the garage door opener.

Only thing is, you won't be able to tell if the person came in through the office door, or through the garage door unless you looked.

Are the door sensors a similar type, between the office and garage doors?

--sarge

 

[mrb]

i would leave the GDO alone and put in a seperate photoeye (higher up so you cant just step over it) also, on some gdo photoeyes the circuitry is more complicated than a contact closure as in the ones where both sides operate off one pair of wire.

a video camera is helpful too, that way you can glance at the screen when you hear the chime to see if its someone coming in, or someone running out with whatever they stole.

if you cant find a cheap one, i have an extra i could probably stand to let go of.

 

[hillbilly1]

What about just adding another sensor at the bottom of the garage door, that triggers the existing obnoxious chime?

Or, splitting the output of the existing sensor, so that it goes to the chime AND to the garage door?...................

--sarge

The sensor for the door is monitored by the opener, if the current is too high or low, it trips out the sfety control and stops the door from operating , tapping off this may trigger the monitor.

 

[gatchel]

Do you have an existing alarm system in the shop. If you do and have a motion in the area, maybe you could have the motion detector covering the garage door area trip the chime on you alarm panel. It may require some programming changes on the panel though.


Maybe you could buy a second door sensor similar to the one on the front door and program it in to the same system, assuming it is motion activated.

You could also get one of those "Radio Shack" light beam modules that chime when some one crosses the beam.