Sparkfun: Large Piezo Vibration Sensor - With Mass - Revision history

Geislekj at 04:55, 2 November 2012

2012-11-02T04:55:45Z

2012-11-02T04:55:25Z

2012-10-26T01:08:26Z

‎Beagle Bone Usage

2012-10-17T21:11:02Z

Updated grading comments

2012-10-04T02:20:42Z

2012-10-04T02:19:07Z

2012-10-04T02:18:41Z

2012-10-04T02:18:09Z

2012-10-04T01:50:30Z

2012-10-04T01:45:17Z

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-{{GeislerHead}}
+{{GeislekjHead}}
 [[Category:ECE497]]
 [[Category:SparkFun]]

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 ==Beagle Bone Usage==
-The value being read from the piezo sensor will be a voltage up to +/-90V.  This means that an analog pin must be used to read the value from the sensor.  The voltage being supplied to the sensor affects how much sensitivity you will receive.  Look in the technical manual to find a desired voltage that will work for you.  For the example below, I simply used a 5V source.
+The value being read from the piezo sensor will be a voltage up to +/-0.5V.  This means that an analog pin must be used to read the value from the sensor.  The voltage being supplied to the sensor affects how much sensitivity you will receive.  Look in the technical manual to find a desired voltage that will work for you.  For the example below, I simply used a 5V source.
 [[File:Piezo-breadboard-layout.jpg|thumb |alt=Example alt text |This is a picture of the layout of the piezo vibration sensor using an op amp and the beagle board.]]

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 <pre style="color:red">
-Overview: 1, Nice overview, but show a picture of the device
+Overview: 1, Nice overview, but a close up picture of the device would help.
-Wiring:   0, Give specifics of how you wired it. Include a diagram.
+Wiring:   1, What op-amp are you using?  A schematic of your actual circuit would be a big help.
-Think of what a beginner would like.
 Code:     2
-git:      0, put in git
+git:      2
 Demo:     2
-Total:    5/10
+Total:    8/10
 Comments: Good start, but more specific details are needed.
 </pre>

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 The [https://www.sparkfun.com/datasheets/Sensors/Flex/MSI-techman.pdf Technical Manual] and [http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Sensors/ForceFlex/LDT_Series.pdf datasheet] can also be found on Sparkfun's website.
-[[File:PiezoCircuit.PNG|thumb |alt=Example alt text |This is and example layout of the piezo vibration sensor using an op amp and the beagle board.]]
+[[File:PiezoCircuit.PNG|thumb |alt=Example alt text |This is and example circuit layout of the piezo vibration sensor using an op amp and the beagle board.]]
 ==Usage==
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 The value being read from the piezo sensor will be a voltage up to +/-90V.  This means that an analog pin must be used to read the value from the sensor.  The voltage being supplied to the sensor affects how much sensitivity you will receive.  Look in the technical manual to find a desired voltage that will work for you.  For the example below, I simply used a 5V source.
-[[File:Piezo-breadboard-layout.jpg|thumb |alt=Example alt text |This is and example layout of the piezo vibration sensor using an op amp and the beagle board.]]
+[[File:Piezo-breadboard-layout.jpg|thumb |alt=Example alt text |This is a picture of the layout of the piezo vibration sensor using an op amp and the beagle board.]]
 ==Reading the Analog Signal==

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 ==Usage==
 Since the piezo sensor acts like a small capacitor, you can connect on a bread board as such.  However an additional resistor is needed in order affect the low frequency of measurement. This is called the "loading effect".  Additionally, if the signal from the piezo sensor is too low an op amp may be necessary.
 More specific information and circuit diagrams can be found in the [https://www.sparkfun.com/datasheets/Sensors/Flex/MSI-techman.pdf Technical Manual] on pages 36-40.
 ==Beagle Bone Usage==

← Older revision		Revision as of 02:18, 4 October 2012
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	More specific information and circuit diagrams can be found in the [https://www.sparkfun.com/datasheets/Sensors/Flex/MSI-techman.pdf Technical Manual] on pages 36-40.		More specific information and circuit diagrams can be found in the [https://www.sparkfun.com/datasheets/Sensors/Flex/MSI-techman.pdf Technical Manual] on pages 36-40.
		+
		+	[[File:PiezoCircuit.PNG\|thumb \|alt=Example alt text \|This is and example layout of the piezo vibration sensor using an op amp and the beagle board.]]

	==Beagle Bone Usage==		==Beagle Bone Usage==

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 ==Sample Code==
-The following code can be found [https://github.com/geislekj/ECE497/tree/master/miniProject2 here] on git hub.
+The following code can be found on [https://github.com/geislekj/ECE497/tree/master/miniProject2 git hub].
 <pre>

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 ==Overview==
-The Large Piezo Vibration Sensor is a basic piezo sensor which is often used for flex, touch, vibration and shock measurements.  This sensor acts like a small capacitor which discharges up to +/-90V when the film moves back and forth. Some common uses this type of sensor are for impact sensing or as a flexible switch.  A larger scale example are piezo sensors that are laid within the road for use of traffic signals.
+The [http://dlnmh9ip6v2uc.cloudfront.net/images/products/9/1/9/7/09197-02-L.jpg Large Piezo Vibration Sensor] is a basic piezo sensor which is often used for flex, touch, vibration and shock measurements.  This sensor acts like a small capacitor which discharges up to +/-90V when the film moves back and forth. Some common uses this type of sensor are for impact sensing or as a flexible switch.  A larger scale example are piezo sensors that are laid within the road for use of traffic signals.
 This sensor can be purchased at [https://www.sparkfun.com/products/9197 SparkFun].