AccueilGalerieRechercherS'enregistrerConnexionNouveaux messages depuis dernière visite
Rechercher
 
 

Résultats par :
 
Rechercher Recherche avancée
Qui est en ligne ?
Il y a en tout 43 utilisateurs en ligne :: 8 Enregistrés, 0 Invisible et 35 Invités :: 1 Moteur de recherche

Atch, jeumsouvien, la denrée, oursgris, PanBreizh, PETIGA, popoffe, racatapla

Le record du nombre d'utilisateurs en ligne est de 294 le Lun 18 Nov 2019 - 20:11
Derniers sujets
» [Techniques] Ça m’intéresse, composites et polymères
Detonation Sensor DIY help Icon_minitimeAujourd'hui à 21:44 par bentou

» [Oldies] Les Suzuki 500 RG ( Part 2 )
Detonation Sensor DIY help Icon_minitimeAujourd'hui à 21:13 par Atch

» [Endurance] 24 heures du Mans 2020
Detonation Sensor DIY help Icon_minitimeAujourd'hui à 20:29 par mickey

» [Oldies] Ospedaletti
Detonation Sensor DIY help Icon_minitimeAujourd'hui à 20:23 par damienfollenfant

» [Oldies] Le mystère des antipodes, ces usines à champions bien trempés
Detonation Sensor DIY help Icon_minitimeAujourd'hui à 18:51 par marco91

» [MotoGP] GP 2019 / 2020 , infos , nouveautés , résultats des tests , potins et ....
Detonation Sensor DIY help Icon_minitimeAujourd'hui à 18:11 par EDOUARD Jean

» [Oldies] Angel Nieto Mike Hailwood (part 6)
Detonation Sensor DIY help Icon_minitimeAujourd'hui à 17:45 par Veeline

» [Road racing] virtual TT 2020
Detonation Sensor DIY help Icon_minitimeAujourd'hui à 13:09 par mickey

» Burgundy Classic Trackday Moto Morini Passion à Pouilly le 29 août 2020
Detonation Sensor DIY help Icon_minitimeAujourd'hui à 12:03 par Joel Enndewell 2424

» [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 5)
Detonation Sensor DIY help Icon_minitimeAujourd'hui à 8:02 par Jan Thiel

» [Oldies] Side-Car: quelques images
Detonation Sensor DIY help Icon_minitimeHier à 21:37 par DidierF

» [Oldies] Malheureusement, ils sont partis...
Detonation Sensor DIY help Icon_minitimeHier à 20:52 par mickey

» [oldies] Courses en Finlande et Suede
Detonation Sensor DIY help Icon_minitimeHier à 18:52 par Loveside

» [Oldies] Les Koehler Escoffier
Detonation Sensor DIY help Icon_minitimeHier à 14:14 par buisson dominique

» Camshaft material
Detonation Sensor DIY help Icon_minitimeMar 2 Juin 2020 - 9:56 par Dan42

»  [Oldies] Les découvertes de Tonton Hubert (Part 4)
Detonation Sensor DIY help Icon_minitimeMar 2 Juin 2020 - 9:55 par Tonton Hub

» [Oldies] Les transporteurs de motos des paddocks
Detonation Sensor DIY help Icon_minitimeMar 2 Juin 2020 - 9:53 par DidierF

» [Oldies] Quizz (23)
Detonation Sensor DIY help Icon_minitimeMar 2 Juin 2020 - 9:50 par DidierF

» Projet réplique YZR 500 OWL9
Detonation Sensor DIY help Icon_minitimeMar 2 Juin 2020 - 9:17 par doum

»  [Road Racing] 2020
Detonation Sensor DIY help Icon_minitimeLun 1 Juin 2020 - 23:22 par Mykeul

» Aprilia RS 125 "circuit de refroidissement"
Detonation Sensor DIY help Icon_minitimeLun 1 Juin 2020 - 15:11 par FLO125RSW

» [Oldies] Kawasaki X-09 250cc
Detonation Sensor DIY help Icon_minitimeDim 31 Mai 2020 - 23:40 par offen 88

» [ Oldies ] Jarno Saarinen, la star qui a revolutionné le pilotage (Part 5)
Detonation Sensor DIY help Icon_minitimeDim 31 Mai 2020 - 22:00 par Emmanuel Laurentz

» [Oldies] 50cc de vitesse : Toute leur histoire ! (partie 2)
Detonation Sensor DIY help Icon_minitimeDim 31 Mai 2020 - 19:50 par mickey

» [Oldies] Quand le Tourist Trophy etait un GP : TT 1952, TT 1970, TT 1967, TT 68....
Detonation Sensor DIY help Icon_minitimeDim 31 Mai 2020 - 17:54 par damienfollenfant

» [Endurance] Bol d'Or : on ne marche pas un peu sur la tête ?
Detonation Sensor DIY help Icon_minitimeDim 31 Mai 2020 - 16:28 par EDOUARD Jean

» Valves à l'échappement
Detonation Sensor DIY help Icon_minitimeDim 31 Mai 2020 - 13:59 par carlovitch1

» Aspes is back ......
Detonation Sensor DIY help Icon_minitimeSam 30 Mai 2020 - 23:35 par 4cylindres

» Le retour du championnat AMA sur Eurosport.
Detonation Sensor DIY help Icon_minitimeSam 30 Mai 2020 - 22:07 par MANETON

» Les coupes de marques, d’hier et d’aujourd’hui, d’ici et de là-bas.
Detonation Sensor DIY help Icon_minitimeSam 30 Mai 2020 - 16:39 par nard gilles

La réclame...
Mots-clés
classic ducati 1973 RACING honda bourg 1976 1980 eurosport aprilia race 2013 zone suzuki triumph geco coupe bresse france daytona side yamaha rouge ROAD charade wanted
Meilleurs posteurs
Marc
Detonation Sensor DIY help Voting16Detonation Sensor DIY help Voting13Detonation Sensor DIY help Voting15 
philwood
Detonation Sensor DIY help Voting16Detonation Sensor DIY help Voting13Detonation Sensor DIY help Voting15 
EDOUARD Jean
Detonation Sensor DIY help Voting16Detonation Sensor DIY help Voting13Detonation Sensor DIY help Voting15 
Pierre"PhilRead"
Detonation Sensor DIY help Voting16Detonation Sensor DIY help Voting13Detonation Sensor DIY help Voting15 
mickey
Detonation Sensor DIY help Voting16Detonation Sensor DIY help Voting13Detonation Sensor DIY help Voting15 
Fügner
Detonation Sensor DIY help Voting16Detonation Sensor DIY help Voting13Detonation Sensor DIY help Voting15 
yves kerlo
Detonation Sensor DIY help Voting16Detonation Sensor DIY help Voting13Detonation Sensor DIY help Voting15 
Jarno
Detonation Sensor DIY help Voting16Detonation Sensor DIY help Voting13Detonation Sensor DIY help Voting15 
Dialmax
Detonation Sensor DIY help Voting16Detonation Sensor DIY help Voting13Detonation Sensor DIY help Voting15 
bubu
Detonation Sensor DIY help Voting16Detonation Sensor DIY help Voting13Detonation Sensor DIY help Voting15 
La réclame...
Le Deal du moment :
Clé de licence Windows 10 PRO (version ...
Voir le deal
8.99 €

 

 Detonation Sensor DIY help

Aller en bas 
AuteurMessage
motoholic71



Nombre de messages : 54
Age : 49
Localisation : Lisbon
Date d'inscription : 19/01/2013

Detonation Sensor DIY help Empty
MessageSujet: Detonation Sensor DIY help   Detonation Sensor DIY help Icon_minitimeMer 23 Jan 2013 - 13:47

Hi,
I'm new to this forum,I live in Portugal(unfortunatly) only able to write in Eng. but understand most Francophone writing.
I am an electronic technicien by trade and like to build and improve 2 strokes as a hobby.

I do all voltage regulators/power supply and some of the instruments on my bikes

I'm drawing a circuit to process the signal from a Bosch wide band knock sensor from a car,but I need to know which frequency range to monitor and detect on a motorcycle two stroke.

A pratical test would give the data I need but I have no conditions to preform such a test at this time,I can't do much more than office work,situation I hope will change.

Far from asking someone to preform a potentially destructive dangerous test,my request is for someone who might have the knoledge and won't mind sharing it,I did find a analog circuit floating around on the net based on an amp-op array and hi/lo pass LC freq. filtering net (3.5/6kHz if my memory is right) but it doesn't mention what size and kind of engines it was made for,I think a big 4 cyl.4 stroke will produce a different signal?

Any views welcome,thanks in advance.
Revenir en haut Aller en bas
Seb4LO

Seb4LO

Nombre de messages : 2605
Localisation : Concarneau
Date d'inscription : 05/07/2009

Detonation Sensor DIY help Empty
MessageSujet: Re: Detonation Sensor DIY help   Detonation Sensor DIY help Icon_minitimeMer 23 Jan 2013 - 14:24

The data from a knock sensor is not a frequency but a voltage ...

You get it with a piezo sensor like that

[Vous devez être inscrit et connecté pour voir ce lien]

To get a calibration , i would compare to an HRC unit with dataloguer and the fix the V graduations of the deto as you can find in the dataloguer HRC

Wink
Revenir en haut Aller en bas
motoholic71



Nombre de messages : 54
Age : 49
Localisation : Lisbon
Date d'inscription : 19/01/2013

Detonation Sensor DIY help Empty
MessageSujet: Re: Detonation Sensor DIY help   Detonation Sensor DIY help Icon_minitimeJeu 24 Jan 2013 - 3:44

SEB4LO a écrit:
The data from a knock sensor is not a frequency but a voltage ...

You get it with a piezo sensor like that

[Vous devez être inscrit et connecté pour voir ce lien]

To get a calibration , i would compare to an HRC unit with dataloguer and the fix the V graduations of the deto as you can find in the dataloguer HRC

Wink


as long as you mention any frequency has a tension measred in volts,dB

there is no V graduations ther is a tension measured in Volts.

But dataloggers usually log n. of deto events, not sure what you mean
but don't get me wrong I apreciate the effort to help I assume


The piezoeletric accelerometer (aka knock sensor) measure G force and generates a voltage as result,that can also be express in dB.

a detonation will reverberate in a specific frequency inherent to the engine type,I got this from a car,but it is a wide band sensor and I do have the data sheet

it also detects all the mechanical noise hence the need for filtering

Level calibration is a no brainer


if you have a HRC laying about I can borrow,I'd appreciate because had I the money to buy one I wouldn't be building it.

I will publish a circuit diagram with a bright led VUimeter monitor,3 digit counter and debounced I/0 logic output to drive for ex. a back off advance for the CDI or switch a 2nd curve
All with standard components

I'm asking for a kHz figure for a 2 stroke

[Vous devez être inscrit et connecté pour voir cette image]

Revenir en haut Aller en bas
Vagelis



Nombre de messages : 30
Localisation : Greece
Date d'inscription : 09/07/2011

Detonation Sensor DIY help Empty
MessageSujet: Re: Detonation Sensor DIY help   Detonation Sensor DIY help Icon_minitimeJeu 24 Jan 2013 - 4:55

Perhaps this can help: [Vous devez être inscrit et connecté pour voir ce lien]
I cannot vouch for it though, my knowledge is limited..

There is also this unit -as a knock monitor gauge, not deto counter- which might save you from the trouble altogether: [Vous devez être inscrit et connecté pour voir ce lien]
Revenir en haut Aller en bas
https://s736.photobucket.com/albums/xx5/Vag1-2/
motoholic71



Nombre de messages : 54
Age : 49
Localisation : Lisbon
Date d'inscription : 19/01/2013

Detonation Sensor DIY help Empty
MessageSujet: Re: Detonation Sensor DIY help   Detonation Sensor DIY help Icon_minitimeJeu 24 Jan 2013 - 13:08

Vagelis a écrit:
Perhaps this can help: [Vous devez être inscrit et connecté pour voir ce lien]
I cannot vouch for it though, my knowledge is limited..

There is also this unit -as a knock monitor gauge, not deto counter- which might save you from the trouble altogether: [Vous devez être inscrit et connecté pour voir ce lien]

Hi,that's great it helps a lot.thank you.

The formula must be close enough as it agrees with the data I gathered so far and being that a two stroke doesn't have a noisy valve train I probably can broaden the filters bandwidth

The avejas knock amplifier,I have a circuit that should be very similar to that .
I saw it before,my concern was that box it set to work on 4 stroke car engines,but adding a counter is very easy.

I will now calculate the new RC net with a 4kHz bandwidth centered on 10kHz for a 56mm piston since my cousin has a DT125R which I hope to use for testing,and will start building the board .

Thank you
Revenir en haut Aller en bas
Contenu sponsorisé




Detonation Sensor DIY help Empty
MessageSujet: Re: Detonation Sensor DIY help   Detonation Sensor DIY help Icon_minitime

Revenir en haut Aller en bas
 
Detonation Sensor DIY help
Revenir en haut 
Page 1 sur 1
 Sujets similaires
-
» Vends 729-2 sensor + Bois réactor DJ 300
» vds 2* friendship 729 higher + 729-2 new sensor VENDU
» Lampe Détecteur de Mouvement Prologic Safe Zone Movement Sensor Led
» Back-up sensor
» Système de suspension des GT Sensor et Force 2014

Permission de ce forum:Vous ne pouvez pas répondre aux sujets dans ce forum
 :: TECHNIQUE :: DIVERS-
Sauter vers: