VR emulator for board soldering validation
- AndreyB
- Site Admin
- Posts: 14374
- Joined: Wed Aug 28, 2013 1:28 am
- Location: Jersey City
- Github Username: rusefillc
- Slack: Andrey B
VR emulator for board soldering validation
We need a VR emulator, mostly for quality assurance of assembled units but also to test alternative VR conditioning designs.
EDIT: ONLY for quality assurance of assembled units
Here is proposal #0:
EDIT: ONLY for quality assurance of assembled units
Here is proposal #0:
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
- AndreyB
- Site Admin
- Posts: 14374
- Joined: Wed Aug 28, 2013 1:28 am
- Location: Jersey City
- Github Username: rusefillc
- Slack: Andrey B
Re: VR emulator
An even simpler proposal
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
-
- running engine in first post
- Posts: 1495
- Joined: Mon Jan 30, 2017 2:05 am
- Location: Seattle-ish
Re: VR emulator
Those ignore the true nature of a VR sensor's output. The tricky part is the fact that it goes through the zero crossing slowly, not quickly as these do. (It's much closer to a sawtooth than a square wave).
-
- Posts: 2
- Joined: Wed Dec 16, 2020 8:38 pm
Re: VR emulator
1:
2: Almost good. A bipolar signal source like MAX232 is required. Diagnostics will not work because VRIN2 is connected to GND. Will there be more problems?
3: Another way is to connect a unipolar signal through a capacitor. An additional level converter is required because the Vpk-pk signal must be greater than 5V (Vmiddle * 2) for TLE8888 and max9926 or Vcc for NCV1124. Diagnostics will not work too.
Anyone have any other suggestions? Which of these options is the best choice?
Looks like real vr sensor. A transformer is required, which increases cost and complexity.2: Almost good. A bipolar signal source like MAX232 is required. Diagnostics will not work because VRIN2 is connected to GND. Will there be more problems?
3: Another way is to connect a unipolar signal through a capacitor. An additional level converter is required because the Vpk-pk signal must be greater than 5V (Vmiddle * 2) for TLE8888 and max9926 or Vcc for NCV1124. Diagnostics will not work too.
Anyone have any other suggestions? Which of these options is the best choice?
- Fonzie
- Posts: 13
- Joined: Sun Jan 28, 2018 3:06 pm
- Location: 39000 Lons-le-Saunier, France
- Github Username: duparq
- Contact:
Re: VR emulator
Could not use a sound card and a power amplifier or a transformer for the voltage swing?
-
- running engine in first post
- Posts: 1495
- Joined: Mon Jan 30, 2017 2:05 am
- Location: Seattle-ish
Re: VR emulator
doesn't even need a PA, you could just drive it directly from a headphone output
- AndreyB
- Site Admin
- Posts: 14374
- Joined: Wed Aug 28, 2013 1:28 am
- Location: Jersey City
- Github Username: rusefillc
- Slack: Andrey B
Re: VR emulator
No, this is a lot of manual labor to set things up for each run. This is an extremely overcomplicated, heavy, large and expensive setup.
The focus right now is to have hardware quality assurance validation rig - need a self-contained fully automated testing rig. In this topic we are developing a building block.
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
Re: VR emulator
Doesn't the discovery have a headphone jack?
Welcome to the friendlier side of internet crazy
- AndreyB
- Site Admin
- Posts: 14374
- Joined: Wed Aug 28, 2013 1:28 am
- Location: Jersey City
- Github Username: rusefillc
- Slack: Andrey B
Re: VR emulator
Any additional scope of software is x100 the total effort of hardware implementation. Also I would prefer not to lock myself into discovery for multiple reasons. My strong preference is on a 100% hardware solution for quality assurance at this point, VR signal has to be only as valid as MAX/TLE/NCV expect it to be.
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
Re: VR emulator
How about 36 dip switches connected to a shift register so you can emulate a 36-1 wheel? 100% hardware and emulates a common crank pattern.
Welcome to the friendlier side of internet crazy
Re: VR emulator
Looks like jlc has shift registers.
https://jlcpcb.com/parts/componentSearch?searchTxt=Shift%20Registers
https://jlcpcb.com/parts/componentSearch?searchTxt=Shift%20Registers
Welcome to the friendlier side of internet crazy
- AndreyB
- Site Admin
- Posts: 14374
- Joined: Wed Aug 28, 2013 1:28 am
- Location: Jersey City
- Github Username: rusefillc
- Slack: Andrey B
Re: VR emulator
On this level we kind of do not care for trigger shape, all we need to see is register incoming VR signals. Also we already have digital output for trigger sequence shape so that thing MCU can take care of already.
If we would be testing trigger shape on this level we would have tested with 3 tooth 1 skipped wheel, not 36 tooth one skipped just for simplicity.
If we would be testing trigger shape on this level we would have tested with 3 tooth 1 skipped wheel, not 36 tooth one skipped just for simplicity.
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
- AndreyB
- Site Admin
- Posts: 14374
- Joined: Wed Aug 28, 2013 1:28 am
- Location: Jersey City
- Github Username: rusefillc
- Slack: Andrey B
Re: VR emulator for board soldering validation
Working circuit to simulate the 3 sensor trigger pattern of a Honda D/B/H
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
-
- contributor
- Posts: 413
- Joined: Tue Jul 24, 2018 8:55 pm
- Github Username: Orchardperformance
- Slack: Orchardperformance
Re: VR emulator for board soldering validation
I dont know if this helps or not but I have been checking simply using an old vr abs sensor on a couple of pins to push onto the vr input pins and a fork to wiggle it between, this is able to make the ecu at least see a real rising falling of a vr and so far no issues.
Very low tech but it has been working.
Very low tech but it has been working.
Now keeping MRE in stock in the UK - https://www.FutureProofPerformance.com