Base got bumped off point

Matt Johnson

Well-Known Member
5PLS
@Eugene Aksyonov can you give more details on this feature. I know we discussed it, but I never heard about it being implemented.

Shawn, Michael added this:

VSAPP-3311: Add possibility to detect base station change in orientation and position on rover

1) In Base/Rover setup add possibility to setup transmission of service info ("Add Service Info" setting). It will setup transmittion of RTCM3 1029 message

2) On the rover add detection of base station change in orientation (15 degree) and standalone position (100 m). Also detect wrong setup of transmitted position (delta should be not more than 200 m).
I am trying it now to see if I can get it to work.
 

Matt Johnson

Well-Known Member
5PLS
This feature works when I try it. Check "Add Service Info" when setting up the base (you will need to install the current firmware on the base if this option is greyed out):

BASESETUP-CONFIGURATION_20170403-10.49.55.png


When the base is tilted a warning message will appear on the screen for a few seconds. @Michael Stazhkov can you make the warning messages like this stay on the screen until the user presses a button? It will be easy not to notice it when it is only displayed for short periods of time.

HOME-1_20170403-10.46.19.png


A message is also added in Warnings:

WARNINGS_20170403-10.46.43.png
 

Shawn Billings

Shawn Billings
5PLS
I'm guessing that the Triumph-2 level and compass calibration can only be done with Javad Mobile Tools. Is that still the case?
 

Matt Johnson

Well-Known Member
5PLS
Also @Michael Stazhkov it might be good to lower the threshold from 15 degrees to 5 degrees (or add an option to customize the value) if this will work without the compass on the base needing calibrated often. It would also be nice to display the tilt values of the base in the UHF/TCP info screens and in the right panel of Base/Rover Setup.
 
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Matt Johnson

Well-Known Member
5PLS
Phillip, we have this support in T-2 and T-1M. And Triumph-LS can alert you that Base is moved or felt down...
It seems we have to pay more attention to features promottion :)

Eugene, we should try to post the release notes on the forum so we can explain them more if necessary. I could help with this too if you could share the release notes on Dropbox.
 

John Evers

Well-Known Member
5PLS
Matt, Thanks for pointing this out, and thanks to all that implemented this.

This could become part of our theft proofing our base. If the physical power button on the base was disabled when the base is broadcasting corrections, a thief could not turn off the base. We would have instant notification the moment a thief begins to steal the base. This would work best when using TCP, but would also work with UHF, if we made the modems also not turn off if transmitting. The thief could disconnect the external battery of a 4 watt or 35 watt external modem, but not my 1 watt.
 

Nate The Surveyor

Well-Known Member
Since there apparently IS a compass in the T-2, and there is apparently a tilt sensor, in the T-2. THEN:
It follows that when setting up the T-2 as base, that the magnetic compass reading, AND the TILT could be recorded, in the raw data file.
Calibration of the T-2, would not be needed, because we are looking for CHANGE, not absolute values.

And, if that is true, then every 5 mins, the T-2 could SEND the compass heading, and the Tilt degrees to the LS. OR
If the value changed by X amount, in the T-2, from the time the base was set. This would also be good, as we would have instant notification, when the base was moved.

And, IF those numbers VARIED, by X amount, then it could display on the LS,
"Base has rotated by X degrees from when base was set"
"Base has tilted by x degrees, from when base was set"

And, calibration, would be i relevant... all that is needed to know is CHANGE, and how much. And, you can press OK, and the message disappears.
And, then if it changes again, it repeats.
OCCASIONALLY, a tractor may drive by the base, and addle the compass. Or, a base station, up high on a rail, with cars going by could addle the compass. So, it would be good to be able to turn off COMPASS change notifications. (This would be only at the LS, the base would continue to send them). But, default should be on.

Thanks for being a company that has a forum, for this kind of feedback.

N
 

John Evers

Well-Known Member
5PLS
Matt said: it might be good to lower the threshold from 15 degrees to 5 degrees
I agree with the 5 degree, and might even advocate for half that value.


I observe that it takes 40 seconds for the message to appear on the LS that the base has been tilted too much. I would prefer if this time could be changed to 5 or 15 seconds. This has more to do with a customers initial exposure to this function than real world use. I presume that when the user is testing it out, and finds that it takes 40 seconds for the message to appear, they will wonder why it took so long.

In real world...that 30 second difference may be what is needed to catch a thief. I know it was a trash can that started this discussion, but I think that more base units are moved by thieves than trash cans.
 

Shawn Billings

Shawn Billings
5PLS
Since there apparently IS a compass in the T-2, and there is apparently a tilt sensor, in the T-2. THEN:
It follows that when setting up the T-2 as base, that the magnetic compass reading, AND the TILT could be recorded, in the raw data file.
Calibration of the T-2, would not be needed, because we are looking for CHANGE, not absolute values.

And, if that is true, then every 5 mins, the T-2 could SEND the compass heading, and the Tilt degrees to the LS. OR
If the value changed by X amount, in the T-2, from the time the base was set. This would also be good, as we would have instant notification, when the base was moved.

And, IF those numbers VARIED, by X amount, then it could display on the LS,
"Base has rotated by X degrees from when base was set"
"Base has tilted by x degrees, from when base was set"

And, calibration, would be i relevant... all that is needed to know is CHANGE, and how much. And, you can press OK, and the message disappears.
And, then if it changes again, it repeats.
OCCASIONALLY, a tractor may drive by the base, and addle the compass. Or, a base station, up high on a rail, with cars going by could addle the compass. So, it would be good to be able to turn off COMPASS change notifications. (This would be only at the LS, the base would continue to send them). But, default should be on.

Thanks for being a company that has a forum, for this kind of feedback.

N

Digital compasses must be calibrated to even give a meaningful value. Entire quadrants can be lost if the compass isn't properly calibrated. Tilt might not need it for the reasons you described, but I think the compass will need to be calibrated to be useful at all.
 

Adam

Well-Known Member
5PLS
I agree with John. I would even say 2 degrees of movement should be reported to the user. I noticed the add service info setting a while back and wondered what it did. I meant to post about it but it slipped my mind. Cool feature!
 

Shawn Billings

Shawn Billings
5PLS
Also @Michael Stazhkov it might be good to lower the threshold from 15 degrees to 5 degrees (or add an option to customize the value) if this will work without the compass on the base needing calibrated often. It would also be nice to display the tilt values of the base in the UHF/TCP info screens and in the right panel of Base/Rover Setup.

I agree. I'd also lower the autonomous distance threshold. I'd rather have it at 10-15m instead of 100-200m.
 

Shawn Billings

Shawn Billings
5PLS
I agree with John. I would even say 2 degrees of movement should be reported to the user. I noticed the add service info setting a while back and wondered what it did. I meant to post about it but it slipped my mind. Cool feature!

For tilt I would agree, Adam. The tilt sensors don't have a lot of noise from my experience (a couple of tenths perhaps). For the compass, there could be that much variation (2°) over time, I think.
 

Bruce Dawson

Active Member
My field checks today went well. All is well again in my GPS world. Great job Alexey, thanks again.

I was not able to get the tilt notification to work, however. I turned on the Add Service Info as shown but got no error message when I deliberately threw the base setup out of plumb and level.
 

Matt Johnson

Well-Known Member
5PLS
I was not able to get the tilt notification to work, however. I turned on the Add Service Info as shown but got no error message when I deliberately threw the base setup out of plumb and level.

Have you ever calibrated the levels and compass on the base station? Check and calibrate these if necessary using the Javad Mobile Tools app or by connecting as an external receiver through J-Field.
 
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