Changes between Initial Version and Version 1 of Treadmill_Backpack

Timestamp:

Nov 8, 2013, 10:17:53 AM (11 years ago)

Author:

Eric Hazen

Comment:

--

Treadmill_Backpack

@@ +1 @@
+This page contains ideas/documentation for a Sargent College
+project to vary the effective weight of a backpack carried
+by a subject walking on a treadmill.
+
+=== Design Documents ===
+
+* Proposed [http://joule.bu.edu/~hazen/TreadmillBackpack/system_diagram.pdf System Diagram]
+* Test setup [http://joule.bu.edu/~hazen/TreadmillBackpack/test_setup.pdf Wiring Diagram]
+* Interface PCB schematic [http://joule.bu.edu/~hazen/TreadmillBackpack/interface_sch.pdf PDF]
+  [http://joule.bu.edu/~hazen/TreadmillBackpack/backpack.sch ExpressPCB]
+* Interface PCB layout [http://joule.bu.edu/~hazen/TreadmillBackpack/interface_pcb.pdf PDF]
+  [http://joule.bu.edu/~hazen/TreadmillBackpack/backpack.pcb ExpressPCB]
+* Wiring Diagrams
+ * Sensor and Valve [http://joule.bu.edu/~hazen/TreadmillBackpack/wiring.pdf PDF]
+ * Pump Control [http://joule.bu.edu/~hazen/TreadmillBackpack/relay.pdf PDF]
+
+=== Requirements ===
+
+Weight range is 10%-30% of subject body mass.  20% corresponds to the amount
+of weight which must be added/removed during the trial.  The weight will
+be added/removed in 2.5% mass increments.
+
+||Subject Weight || 10%|| 20% || 30%|| 2.5%||
+|| 50kg|| 5kg|| 10kg ||15kg|| 1.25kg||
+|| 115kg|| 11.5kg|| 23kg ||34.5kg|| 2.9kg||
+
+For a 115kg subject (250lb) the maximum weight to be added/removed
+is 34.5kg (about 50lb).
+
+''''Baseline Design'''
+
+Two water tanks are permanently mounted, one above and one below
+the treadmill.  A third tank is mounted on the backpack.
+Water is delivered from the upper tank to the backpack to increase
+the simulated mass, and drained from the backpack to the floor tank
+to reduce the mass.  A pump returns the water to the upper tank.
+
+The controller allows the operator to deliver a specific volume
+of water from the upper tank to the backpack (to increase mass)
+or from the backpack to the lower tank (to decrease mass).
+Ideally, the controller would be calibrated by entering the subject
+mass in kg, and then would display the current mass and allow the
+operator to increment or decrement the mass by a specified amount.
+
+Initially, the controller will be a software application running
+on a PC.  A small interface board is required to connect the
+solenoids, sensors and load cell to the computer via the
+[http://www.labjack.com/labjack_u3.html U3]
+
+
+
+''''Parts List'''
+
+|| Omega || [http://joule.bu.edu/~hazen/TreadmillBackpack/FPR200.pdf FPR-204-PS]
+[http://www.omega.com/Manuals/manualpdf/M2582.pdf Manual]
+|| Asco || [http://joule.bu.edu/~hazen/TreadmillBackpack/8210_2.09R4.pdf 8210G002]
+|| LabJack || [http://www.labjack.com/labjack_u3.html U3]
+
+''''Reference Material'''
+
+* [http://www.blue-white.com/ Blue-White Inc]
+* [http://www.omega.com/pptst/LC101.html Omega S-Beam Load Cells]
+* [http://www.fujielectric.com/products/ Fuji Electric]
+* [http://www.ttiglobal.com/Default.aspx TTI Global]
+
+* [http://www.omega.com/toc_asp/subsectionSC.asp?subsection=K04&book=Green Omega Continuous capacitative level sensors]
+* [http://www.omega.com/ppt/pptsc.asp?ref=FTB900&Nav=gref02 Omega turbine flowmeter]
+
+* http://www.grainger.com - plumbing stuff
+