Poseidon Releases Solid State Sensors

[tbone1004]

Reckon that the Revo could have two (or three) of those cells with the outputs shared across the controller (Petrel) and monitor (Nerd). Although there's then a shared failure point.

If there's only 2 or 3 Solid State sensor cells used, the spare Revo cell tray space could be taken up by the electronics (maybe, if it fits).

Hopefully those cells are good for the big-time. There can only be a few hundred Poseidon units at most. Once others start using them any weaknesses will come out on show.

Hopefully the manufacturers will make the effort to design upgrades into their systems.

On any of the DiveCAN units there is an ADC board that handles conversion of the analog mV signal from the sensors and converts it to a digital signal for the SOLOE to interpret. This signal is then shared with the OBOE but they are separate nodes *exception being SF2 and maybe some others that use a mini-SOLOE board*. Since everything is digital, you can get things like signal validation that we don't have with the analog sharing. Shared failure points on these types of electronics are really not an issue because if the unit fails you will get a failure alert vs. what you have with analog cells where you get an erratic signal but the computers can't do anything about it outside of voting logic. These types of sensors will remove any argument for the 4 or 5 sensor arrangement we have which was unnecessary with the galvanic cells, but would be nothing short of ridiculous with these.

Sensors are rated with a life expectancy of greater than 5 years in industrial settings, I suspect that in rebreathers they will last considerably longer since they are not being used constantly.

 

[Wibble]

Just a few TLAs (thanks for the clarification @tbone1004)

ADC = Analog to Digital Converter
SOLOE = Solenoid and Oxygen Electronics
OBOE = Oxygen Board Electronics
SF2 = a rebreather brand/type

 

[tbone1004]

Just a few TLAs...

ADC = Analog to Digital Converter
SOLOE =
OBOE =
SF2 = a rebreather brand/type

SOLO-Solenoid and Oxygen Electronics, used interchangeably with SOLOE to add electronics on the end. This is control bus that drives the solenoid and has the controller connected to it
OBOE-Oxygen Board Electronics-this is the monitor bus and where the HUD/secondary connects. OBOE is not necessarily critical and some units like some SF2's do not have an OBOE due to space limitations in the head and use analog connections for their secondary monitors. This is not ideal, but seems to be the exception.

 

[bdog94tiger01]

Just a few TLAs (thanks for the clarification @tbone1004)

ADC = Analog to Digital Converter
SOLOE = Solenoid and Oxygen Electronics
OBOE = Oxygen Board Electronics
SF2 = a rebreather brand/type

Thanks for the heads up. Still trying to learn the new vocabulary.

 

[J-Vo]

I'm trying to decide if it's worth adding a port to my KISS head to use one of these adaptors or should I wait for direct support from Shearwater. The adapter is certainly cheaper than two new Shearwaters.

 

[OTF]

I'm trying to decide if it's worth adding a port to my KISS head to use one of these adaptors or should I wait for direct support from Shearwater. The adapter is certainly cheaper than two new Shearwaters.

I would imagine that it's a head board upgrade and not new handsets.

 

[Whitrzac]

I would imagine that it's a head board upgrade and not new handsets.

Say you don't know anything about KISS rebreathers without saying you know nothing about them

 

[tbone1004]

I would imagine that it's a head board upgrade and not new handsets.

only if it's DiveCAN where you'd be replacing the O2 boards. On the KISS units it would be an entirely new head if they put the can boards in there or you would still have an external canister which is basically a monitor bus from DiveCAN. A couple of years ago I asked @Shearwater if they would offer something like that was told in no uncertain terms they have no interest in supporting homebuilds or non-manufacturer upgrades. With KISS that basically means you're getting brand new heads and would still have to replace the computers to make them DiveCAN computers. The Tecme option is definitely the least bad way to get these sensors on any of the manual units as you don't need a new computer or head.

 

[OTF]

Say you don't know anything about KISS rebreathers without saying you know nothing about them

guilty as charged

 

[J-Vo]

only if it's DiveCAN where you'd be replacing the O2 boards. On the KISS units it would be an entirely new head if they put the can boards in there or you would still have an external canister which is basically a monitor bus from DiveCAN. A couple of years ago I asked @Shearwater if they would offer something like that was told in no uncertain terms they have no interest in supporting homebuilds or non-manufacturer upgrades. With KISS that basically means you're getting brand new heads and would still have to replace the computers to make them DiveCAN computers. The Tecme option is definitely the least bad way to get these sensors on any of the manual units as you don't need a new computer or head.

Money aside, I think direct support by a Shearwater handsets would be better. I have a feeling they will only support on the canbus though.