Wednesday, November 11, 2009

DZ3 Instrumentation Release: What's In, What's Not

Any large working system has inevitably evolved from a small working system.

-- Source lost in time

  • 1-Wire Sensors. Temperature and humidity for now;
  • Shell Sensor. If you can extract information from your hardware via shell script, this is what you use to make it available to DZ;
  • Thermostat;
  • Zone Controller;
  • HVAC Unit abstraction;
  • Damper Controller for bang-bang dampers;
  • Damper Controller for modulating dampers;
  • Complete data logging for every measurement point in between, including hysteresis and PID controllers inside of thermostat;
  • JMX instrumentation (quite comprehensive) and control (limited for now).

Unfortunately, some essential stuff -
  • Servo controller integration;
  • HVAC Unit driver;
  • GUI;
  • Scheduler
And some not so essential -
  • DAC & Core talking over TCP;
  • Obviously, sensor discovery over LAN;
  • xAP, xPL loggers (try, they most probably work, but I haven't checked).
Reason for this is that I wanted to clean up issues accumulated over years, and make sure that the system is completely transparent, can be monitored, and bugs can be seen visually (and most of them are). So the net result of this effort, so far, is a working stable system with no actual outputs (other than data loggers). You can watch it, but you can't touch it.


Well, if you've never had DZ installed because it was too complex to install and configure, the day of Instrumentation Release is your lucky day. What is already done is a turnkey acceptance of all the sensor network with no configuration beyond 1-Wire adapter port name necessary. Hang the sensors on the wall, start DZ3 and watch your house's thermal behavior in gory details.

If you do already have some variant of DZ installed and connected to actuators, then hold off for a short while, the good stuff is coming.


Exactly what is missing from this release:
  • Servo controller integration;
  • HVAC Unit driver;
  • JMX instrumentation allowing to actually control the thermostat setpoints.
GUI and scheduler ports are still on a back burner for now, the priority is a stable and working system, not a nice looking system.

UPDATE: released.

No comments:

Post a Comment