Pirate Dave
New Member
Does anyone know the name of the long haired man in the video?
I saw him give a very interesting speech at the NSS-CDS workshop last year
I saw him give a very interesting speech at the NSS-CDS workshop last year
Solid State sensors
- Thread starter Wol
- Start date
His name is Joe Dituri.
matt
Well-Known Member
These cells have the potential to be distuptive to rebreather manufacture. But I fear they won't achieve this due to the narrow mindedness of the way they have been developed. Does anyone know who now owns the rights to the patent - I believe it was developed by Arne Sieber et al at SeaBear but don't know if he, they or Johnson Outdoors now control it.
The Betamax of rebreather-cells?
Matt.
The Betamax of rebreather-cells?
Matt.
what makes you think they were narrow minded? I know for a fact that Poseidon is not going to keep this to themselves. They have a rollout plan that is in line with how they want to make money. Right now they are available with the CPOD and the M28, then it will roll out as an upgrade to the Se7en. They invested some ungodly amount of money to develop them and they have every right to make it a selling point for their rebreathers. The plan is to then allow other CCR manufacturers *obviously the CCR manufacturers themselves don't really have anything to do with it, it is the electronics mfg's that have to make it work*, and then let them use the cells. Part of the problem now is the refresh rate of the cells is too fast for many of the computers to handle because the electronics were never designed to handle that much data input. IIRC the sensor is refreshing at at least 10 readings/second and that is a lot of data to handle for a computer that was designed to read an analog mV signal, on top of the power requirement. Something like the Petrel just can't handle that, so the other manufacturers have to built a computer that can.
When did you start working for Poseidon?
for and with are two very different things....
Don't keep us in suspense! I didn't even know you had a CCR
Bruce Partridge
Member
We don't have the complete description of the communication between the sensor on the computer, but there is no reason to expect that a Petrel DiveCAN system would have any problem talking to the sensor. It would require a specific connection though, so there will be a significant delay after the sensor is released to the market since the circuit boards will need to be changed.
Bruce
that was what was explained to me. The technology isn't hard to adapt, but you would have to develop basically a new O2 board that could provide power to the sensors and process all of the information coming back to it at the refresh rate that it was designed to use, all while being able to still handle the analog sensors. No easy task and something that I imagine would take at least 18 months for proper development, prototyping, and testing before release
MadUKDiver
Member
So when will the datasheet be published that gives the environmental, mechanical, electrical and 'digital' interface details etc? When can I buy one or two sensors for development work?
matt
Well-Known Member
My view is entirely based on what I have seen. Poseidon is a tier-2/3 rebreather (my view), with the likes of APD, JJ, Meg and rEvo being the bigger players. If you want to make a disruption then you need to have these players on-board, from the off, so they can be part of the disruption, make the developments and bring the products to market.
It's only a view. But right now I see them making competitive and proprietary products, and assume this is an attempt to have USP that pushes sales of Poseidon units. Which is a shame, as that unit isn't mainstream.
Maybe in the longer term this will change.
Matt.
It's only a view. But right now I see them making competitive and proprietary products, and assume this is an attempt to have USP that pushes sales of Poseidon units. Which is a shame, as that unit isn't mainstream.
Maybe in the longer term this will change.
Matt.
think about what you're saying. APD is the only one of those who don't have electronics supplied by Shearwater. APD was the first of the big name breathers with a digital bus system, and all of the ones you have listed now have one with the DiveCAN. It isn't up to JJ, ISC, Mares etc to make the cells work on their units, it is up to the electronics companies. APD, Shearwater, Jeurgensen etc. and the only thing Poseidon can do to restrict that is to refuse the sale of the cells to those that aren't on the "list" with an M28 computer. Right now, they have a computer and a cell that works. There is nothing stopping anyone from putting that on their loop right now on any of the units you mentioned. Your restriction is you have to use their computer to monitor it.
There is also nothing stopping anyone with an mCCR from purchasing it, removing the cell from the CPOD and sticking it into their head in place of the galvanic sells they have now, but again, you are restricted to their computer.
I'm sure Shearwater and Poseidon will work it out to where Bruce et al can get this thing to work, for Poseidon, they really have to as that is the only way to pay off their investment in the development as well as stick to their guns about it being a game changer in diver safety, but there is absolutely nothing wrong with them using it to swing people over to either their rebreather or at least their computer in the short run. They had to foot the bill for the development, they are a for-profit company, they have to pay off the investment. Selling computers and rebreathers with the cells is a much faster way to do that than just selling the cells.
Give them time, but don't make unsubstantiated claims about them being narrow minded in the development when you have nothing to back that up. If you want to be upset with someone, be upset with DiveSoft for not releasing the helium sensors. They've had them out for how long and are now only available in the Liberty? Those are accurate enough for a disaster check if your sensors are going wonky but you can't put them into any other unit or even buy standalone sensors from them.
matt
Well-Known Member
I like your passion, but I haven't changed my mind as yet. I wait to be surprised, though. Can't see the M28 being that popular compared to the current set-up which is working fine and has more options for monitoring. We can agree to disagree.
Matt.