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how to build a counter for the laser pointer when the laser pointer was triggered ?
Posted: 21 Nov 2019, 14:34
by jianye
hello,
i have built a safety light curtain and i want to build a counter to store the times that the laser pointer was triggered.
how can I realize this function ?
any advice ?
Jian
Re: how to build a counter for the laser pointer when the laser pointer was triggered ?
Posted: 27 Nov 2019, 14:06
by coppelia
The simplest is to use a
non-threaded child script for that. In the sensing section, read your proximity sensor with
sim.readProximitySensor. Compare the detection value with the value read in previous simulation step. If the value goes from
no detection to
detection, then increment your counter.
Cheers
Re: how to build a counter for the laser pointer when the laser pointer was triggered ?
Posted: 28 Nov 2019, 21:42
by jianye
hello,
how can I know the detection status of no detection and detection?
and can i read the value of the previous simulation step?
thank you in advance.
Jian
Re: how to build a counter for the laser pointer when the laser pointer was triggered ?
Posted: 29 Nov 2019, 08:59
by fferri
jianye wrote: ↑28 Nov 2019, 21:42
hello,
how can I know the detection status of
no detection and
detection?
sim.readProximitySensor
jianye wrote: ↑28 Nov 2019, 21:42
and can i read the value of the previous simulation step?
Before storing the result in a variable, that variable will contain the result of the previous simulation step.
E.g.:
Code: Select all
function sysCall_sensing()
result,d,p,h,n=sim.readProximitySensor(sensorHandle)
if oldresult==0 and result==1 then
-- do something
end
oldresult=result
end
Re: how to build a counter for the laser pointer when the laser pointer was triggered ?
Posted: 29 Nov 2019, 16:34
by jianye
I understand, thank you so much.