Perimeter trigger at : 65830

[Lighthouse]

Hallo,
ich habe ein Problem mit der Perimeterschleife. Sobald ich den Mäher mit "Perimeter use: YES"
(Console)
--------------------------------------------------------------------------
Change to Area : 1
New sigcode in use : 1,1,-1,-1,1,-1,1,-1,-1,1,-1,1,1,-1,-1,1,-1,-1,1,-1,-1,1,1,-1,
matchSignal size=24
subSample=4
capture size=192
-------------------------------
.....
START
Ardumower 1.45-Azuritber-MPU9250
......
und anschließend mit z.B. "Pattern is RAND" und "Start Now" starte, fährt er ein Stück, stoppt, dreht, fährt, stoppt usw..

(Console)
NORMALMOWING / POUTSTOP
t 0 Loops 19869 v2 POUTSTOP sig min -105 max 105 avg 25 mag -620 qty 139 in 1 cnt 940 on 1
NORMALMOWING / POUTREV
t 0 Loops 16658 v2 POUTREV sig min -105 max 105 avg 34 mag -699 qty 125 in 1 cnt 958 on 1
t 1 Loops 19089 v2 POUTREV sig min -105 max 105 avg 31 mag -634 qty 118 in 1 cnt 970 on 1
t 2 Loops 19649 v2 POUTREV sig min -105 max 105 avg 27 mag 579 qty 135 in 1 cnt 980 on 1
NORMALMOWING / POUTROLL
t 0 Loops 19855 v2 POUTROLL sig min -105 max 105 avg 30 mag -787 qty 163 in 1 cnt 996 on 1
t 1 Loops 19527 v2 POUTROLL sig min -105 max 105 avg 33 mag 555 qty 111 in 1 cnt 1012 on 1
t 2 Loops 19815 v2 POUTROLL sig min -105 max 105 avg 26 mag -771 qty 109 in 1 cnt 1016 on 1
t 3 Loops 19822 v2 POUTROLL sig min -105 max 105 avg 27 mag -720 qty 152 in 1 cnt 1036 on 1
NORMALMOWING / POUTFOR
Find Inside roll nb: 0
NORMALMOWING / ROLLTOIN
NORMALMOWING / FRWODO
Perimeter trigger at : 130966

Ich war einige Meter vom Draht entfernt. Ich glaube, der Empfang des Signals ist OK und er erkennt, dass er innen ist (in 1), oder?
Warum triggert er den Perimeter, wo doch über dem Draht MAG > 2000 ist (Perimeter MAG MAX VALUE eingestellt auf auf 2000)?

Danke
Jens

 

[bernard]

Please test without mow motor:
Go to Setting / Mow and set the Force Mowing OFF to YES.

Repeat your test to check if it's OK.

 

[Lighthouse]

Hi,
thanks for the tip, But it still does not work, I guess there is a problem with the hardware, I get a waveform out of the amp while the sender is off. I'll check all and come back with the results.
Thanks
Jens

 

[Lighthouse]

Hi, it was a hardware problem. Your Tip leads me to the solution. The distance between coil and the DC/DC converter was to small (about 10cm). I saw the 50kHz oszilator frequency of the DC/DC bucks in the AMP output. I increased the distance to about 25cm and IT works perfekt.
Tanks
Jens

 

[Lighthouse]

I had a look into the datasheet of my DC/DC converter because my problem came back with the final wiring. They work with 150kHz so the distance wasn't the problem. The AMP was swinging. I could solve this with a 10R resistor in the Vcc cable and a 100microF capacitor between Vcc and GND.

 

[RonPeeters]

@Lighthouse,

Just so I understand you correctly:
- Your mower motor is altered to reduce noise as per https://github.com/Ardumower/ardumo... Entstoerung/Motor EntstoerungREV20150531.pdf
- You placed a 10K resistor in the VCC cable of the receiver (between PCB and receiver) and
- added a 100µF capacitor between Vcc and Gnd on the receiver board

And the noise is gone?

 

[Lighthouse]

Hi RonPeeters,
- the Perimeter Receiver was not working
- I've checked the output of the AMP and saw a 50kHz Signal.
- I moved the AMP and thought, that this was the solution. But I used poor temporarly cable connectors and had with them a resistor in the power supply cable. The AMP worked correctly.
- the Signal was not noise from somewhere (Motor, DC/DC converter...)
- the AMP was instable and created the 50kHz signal.
- with the final cable the Problem came back.
- to get a propper functionality I used the resistor and the capacitor.