01-16-2019 02:35 PM
Assuming the use of a PXI based system, what PXI module would be needed/best to capture ISO 15118 traffic getting sent over a DC charging cable? I don't have the ISO 15118 specification so I don't know how this is encoded and what sort of sampling rates are needed.
01-18-2019 08:29 AM - edited 01-18-2019 08:30 AM
It's hard to make a recommendation without any details on the standard you're trying to measure. You mentioned a DC charging cable, so I would assume that there's some common mode voltage involved? In that case, you'd need to look for a digital I/O module with a larger isolation voltage from this list: http://www.ni.com/en-us/shop/select/pxi-digital-io-module. Our other higher speed modules like the reconfigurable digital I/O cards generally do not have the kind of isolation you'd need for a large common mode voltage, but if you do your own signal conditioning they may be an option as well: http://www.ni.com/en-us/shop/select/pxi-digital-reconfigurable-io-module
If you'd like to give one of our engineers a call to discuss what options are available, you can reach us at (888) 280-7645.
01-18-2019 08:53 AM
Yea I agree, I jumped the gun a bit on the off chance that someone happened to be familiar with the ISO 15118 standard. I'll have a much better idea once I have that in front of me.
On a related note, do you know, does NI have a team that specifically deals with EV testing?
02-13-2019 05:54 PM
In terms of a team dedicated exclusively to EV Testing, it would be a little bit hard to tell.
If you can specify the type of testing you would be doing, the hardware and software used. I think it is a safe bet to say that NI will have people with experience in those fields. If you have already a relationship with NI, you could talk with your sales point of contact and they should be able to give you more information and help.
01-19-2023 09:07 AM - edited 01-19-2023 09:16 AM
Kind of late answer, but anyways:
I reasonably familiar with the ISO 15118 standard. The standard uses dual layers communication:
It would be a challenging project to build an "interpreter" for yourself, but who I am to decide what you spend your time on...
If you have all this done, the fun only starts: the ISO 15118 is a quite complicated multilayered protocol:
If you need any more help or advice, let me know. But don't say I didn't warn you 🙂
I guess that you could also try to get your hands on a gateway that is used in either charging station or EV's. But even if you would actually manage to find it (there are not a lot of companies making or selling those), you could only use them as a they are intended: as charging station gateway or as EV gateway, not to "listen in". That being said, there are some 'CCS listeners' on the market with which you can do just that. There is one of Vector and you might want to look into scienlab / keysight. However, these things are expensive and the licenses you'd need are even more expensive (altough you might circumvent some of the licenses to go hardcore and do it all by yourselve).