This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision | ||
|
hekate:hekate_case_thermostat [2008/03/11 13:27] wojnicki process link added |
hekate:hekate_case_thermostat [2019/06/27 15:49] (current) |
||
|---|---|---|---|
| Line 6: | Line 6: | ||
| ====== Introduction ====== | ====== Introduction ====== | ||
| + | |||
| + | The ARD process can be easily explained using the following example. | ||
| + | It is a reworked Thermostat case. | ||
| + | The main problem described here is to create a temperature control system | ||
| + | for an office. | ||
| + | The design process is shown below. | ||
| ===== Description ===== | ===== Description ===== | ||
| + | |||
| ===== Conceptualization ===== | ===== Conceptualization ===== | ||
| ==== Vocabulary ==== | ==== Vocabulary ==== | ||
| + | |||
| ==== Original Rules ==== | ==== Original Rules ==== | ||
| Line 106: | Line 114: | ||
| then thermostat_setting is '14 degrees' | then thermostat_setting is '14 degrees' | ||
| </code> | </code> | ||
| + | |||
| + | The seasons //ARE// correct, the Author lives in Australia. | ||
| ===== Analysis ===== | ===== Analysis ===== | ||
| Line 112: | Line 122: | ||
| ==== General Conceptual Design ==== | ==== General Conceptual Design ==== | ||
| + | |||
| + | |||
| + | |||
| + | |||
| + | |||
| + | |||
| + | |||
| ==== Directed Conceptual Design ==== | ==== Directed Conceptual Design ==== | ||
| + | We model the system aiming at matching the original rules. | ||
| + | |||
| + | First, it is stated that there is a system to be designed which is described by | ||
| + | a single conceptual attribute ''Thermostat''. | ||
| + | It is so called level 0 of the design. | ||
| + | |||
| + | Refining knowledge about what is the purpose of the system makes a transition to the diagram at level 1; it is a finalization. | ||
| + | It is stated that the thermostat controls temperature and this control has something to do with time. | ||
| + | That is why ''Thermostat'' is finalized into ''Time'' and ''Temperature''. | ||
| + | |||
| + | Furthermore, at level 2, it is stated that ''Temperature'' | ||
| + | depends on ''Time'': there are two properties identified in the | ||
| + | system and a functional dependency between them. | ||
| + | |||
| + | The design process continues, through splits and/or finalizations, until all physical attributes (indicated with lower case letters) are identified and relationships among them are stated which is presented at level 8. | ||
| + | |||
| + | The whole process is shown below: | ||
| + | |||
| + | ^ ARD diagram ^ Corresponding THP ^ VARDA model ^ | ||
| + | | <graphviz file="hekate:therm-a0.dot"></graphviz> | | ard_att_add('Thermostat'), ard_property_add(['Thermostat']) | | ||
| + | | <graphviz file="hekate:therm-a1.dot"></graphviz> | <graphviz file="hekate:therm-t1.dot"></graphviz> | ard_att_add('Time'), ard_att_add('Temperature'), ard_finalize(['Thermostat'], ['Time','Temperature']) | | ||
| + | | <graphviz file="hekate:therm-a2.dot"></graphviz> | <graphviz file="hekate:therm-t2.dot"></graphviz> | ard_split(['Time','Temperature'],[ ['Time'],['Temperature']], [ [ ['Time'],['Temperature']]])| | ||
| + | | <graphviz file="hekate:therm-a3.dot"></graphviz> | <graphviz file="hekate:therm-t3.dot"></graphviz> | ard_att_add('Date'), ard_att_add('Hour'), ard_att_add(season), ard_att_add(operation), ard_finalize(['Time'],['Date','Hour',season,operation])| | ||
| + | | <graphviz file="hekate:therm-a4.dot"></graphviz> | <graphviz file="hekate:therm-t4.dot"></graphviz> | ard_split(['Date','Hour',season,operation],[ ['Date','Hour'],[season,operation]],[ [ ['Date','Hour'], [season,operation]],[ [season,operation],['Temperature']]])| | ||
| + | | <graphviz file="hekate:a5f.dot"></graphviz> | <graphviz file="hekate:t5f.dot"></graphviz> | ard_split([season,operation],[ [season],[operation]],[ [ ['Date','Hour'],[season]],[ ['Date','Hour'],[operation]],[ [season],['Temperature']],[ [operation], ['Temperature']]])| | ||
| + | | <graphviz file="hekate:a6f.dot"></graphviz> | <graphviz file="hekate:t6f.dot"></graphviz> | ard_split(['Date','Hour'],[ ['Date'],['Hour']],[ [ ['Date'],[season]],[ ['Date'],[operation]],[ ['Hour'],[operation]]])| | ||
| + | | <graphviz file="hekate:a7f.dot"></graphviz> | <graphviz file="hekate:t7f.dot"></graphviz> | ard_att_add(day), ard_att_add(month), ard_att_add(today), ard_finalize(['Date'],[day,month,today])| | ||
| + | | <graphviz file="hekate:a8f.dot"></graphviz> | <graphviz file="hekate:t8f.dot"></graphviz> | ard_split([day,month,today],[ [month],[day,today]],[ [ [month],[season]],[ [day,today],[operation]]])| | ||
| + | | <graphviz file="hekate:a9f.dot"></graphviz> | <graphviz file="hekate:t9f.dot"></graphviz> | ard_split([day,today],[ [day],[today]],[ [ [day],[today]],[ [today],[operation]]]| | ||
| + | | <graphviz file="hekate:a10f.dot"></graphviz> | <graphviz file="hekate:t10f.dot"></graphviz> | ard_att_add(hour), ard_finalize(['Hour'],[hour]), ard_att_add(thermostat_settings), ard_finalize(['Temperature'],[thermostat_settings])| | ||
| + | |||
| + | === Full Optimized Design === | ||
| + | |||
| + | VARDA can automatically optimize the diagram, by re/collapsing the lowest ARD using TPH. | ||
| - | Subsequent ARD levels are given below: | + | The subsequent //optimized// ARD levels (as recreated by VARDA) are given below: |
| {{:hekate:thermostat-ard.png|:hekate:thermostat-ard.png}} | {{:hekate:thermostat-ard.png|:hekate:thermostat-ard.png}} | ||
| Line 123: | Line 174: | ||
| {{:hekate:thermostat-tph.png|:hekate:thermostat-tph.png}} | {{:hekate:thermostat-tph.png|:hekate:thermostat-tph.png}} | ||
| - | |||
| - | XTT prototype generated by [[VARDA]]: | ||
| - | |||
| - | {{:hekate:thermostat-varda-xtt.png|:hekate:thermostat-varda-xtt.png}} | ||
| === Full ARD Model === | === Full ARD Model === | ||
| - | See ''therm-model.pl'' in [[hekate:varda]] | + | See ''{{:hekate:therm-model.pl|therm-model.pl}}'' in [[hekate:varda]] |
| ==== Refined Conceptual Design ==== | ==== Refined Conceptual Design ==== | ||
| Line 137: | Line 184: | ||
| ===== Structuralization ===== | ===== Structuralization ===== | ||
| + | |||
| + | XTT prototype generated by [[VARDA]]: | ||
| + | |||
| + | {{:hekate:thermostat-varda-xtt.png|:hekate:thermostat-varda-xtt.png}} | ||
| ===== Logical design ===== | ===== Logical design ===== | ||
| Line 143: | Line 194: | ||
| + | check if: | ||
| + | * rules are consitant with the book | ||
| + | * the xtt design is consistent with the book w.r.t seasons and temperature! | ||
