Strain Gauge - Revision history

Lynch: /* Example Usage */

2011-02-04T17:06:21Z

Example Usage

2009-01-12T20:38:06Z

Example Usage

2009-01-09T05:12:04Z

Example Usage

2009-01-09T05:11:08Z

Example Usage

2009-01-07T04:51:44Z

Example Usage

2009-01-07T04:51:25Z

Example Usage

2009-01-07T04:50:58Z

2006-07-06T21:34:20Z

2006-06-27T15:56:49Z

2006-06-27T15:37:42Z

New page

===Overview===

===Circuitry===

==References==
* http://www.allaboutcircuits.com/vol_1/chpt_9/7.html/strain_gauges

@@ Line 27: / Line 27: @@
 Here is an example set up circuit with amplifier amp and tuning potentiometer:
-[[image:ForceSensorCircuitDiagram.jpg]]
+[[Image:ForceSensorCircuitDiagram.jpg]]
 Ensure that the power lines are very stable, it is suggested that in noisy environments, a DC-DC converter, power regulator(L78L05) and large power capacitors are used to ensure clean signal.  In more ideal environments, a simple capacitor across the power lines should be sufficient.

@@ Line 28: / Line 28: @@
 [[image:ForceSensorCircuitDiagram.jpg]]
+Ensure that the power lines are very stable, it is suggested that in noisy environments, a DC-DC converter, power regulator(L78L05) and large power capacitors are used to ensure clean signal.  In more ideal environments, a simple capacitor across the power lines should be sufficient.
 ==References==

@@ Line 25: / Line 25: @@
 [[image:FX1901.jpg]]
+Here is an example set up circuit with amplifier amp and tuning potentiometer:
-[[image:ForceSensorCircuitDiagram.jpg]]
+[[image:ForceSensorCircuitDiagram.jpg]]
-Here is an example set up circuit with amplifier amp and tuning potentiometer.
 ==References==

@@ Line 25: / Line 25: @@
 [[image:FX1901.jpg]]
-[[image:FX1901 Diagram.jpg]]
+[[image:ForceSensorCircuitDiagram.jpg]]
+Here is an example set up circuit with amplifier amp and tuning potentiometer.
-Connect the + input to Vcc and the - input to Vss.  A signal conditioner then needs to be used to get the appropriate gain for output.
 ==References==

@@ Line 23: / Line 23: @@
 The FX1901 is an inexpensive 1% strain gauge that can be used for a variety of applications.  It is available for about $30 and comes in 10, 25, 50, and 100 lbf models
-[[image:FX1901.jpg]
+[[image:FX1901.jpg]]
+[[image:FX1901 Diagram.jpg]]
 Connect the + input to Vcc and the - input to Vss.  A signal conditioner then needs to be used to get the appropriate gain for output.

@@ Line 2: / Line 2: @@
 Strain gauges are simple sensors that can be used to measure forces.  They consist peice of conducting material that changes resistance as it is stretched in a given direction.  The diagram below shows this:
-[[image:strain gauge.jpg]]
+[[image:strain gauge.jpg|center]]
 ===Circuitry===
@@ Line 9: / Line 9: @@
 The first configuration is the simplest method.  The wheatstone bridge measures small imbalances in the resistances.  Here it is comparing the strain gauge resistance to <math>R_3</math>, which has a resistance equal to the resistance of the unstretched strain gauge.  The other two resistors should have similar values.
-[[image:simple strain guage circuit.jpg]]
+[[image:simple strain guage circuit.jpg|center]]
 Next is a more advanced circuit used for measuring strain in both directions.  Two strain gauges are used, and must be positioned carefully, as shown in the second figure.
+{| align="center"
-{|
 |-
 | [[image:advanced strain gauge circuit.jpg|300px]]
 | [[image:advanced strain gauge attachment.jpg|300px]]
 |}