2017:Electrical Main: Difference between revisions

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Insert details/designs/drawings/info/notes relevant to overall electrical systems here....
Insert details/designs/drawings/info/notes relevant to overall <span style="font-family:times new roman,times,serif;">electrical</span>&nbsp;systems here....


= Speed Controllers =
= Speed Controllers =
= Circuit Breakers =
[[File:VB3 Spec Sheet.pdf|thumb|left|30A and 20A circuit breaker datasheet]]
[[File:MX5 Spec Sheet.pdf|thumb|left|40A circuit breaker datasheet]]


= Sensors =
= Sensors =
= Sensor Types =
*'''Shaft Encoders'''
**Grayhill 63R256 and 61KS256 optical shaft encoders are presently used.
***Present availability as of 1/15/17:
****63R256: Digikey $77 with 206 in stock, Newark $87 with no stock, Mouser $54 with 1 in stock
****61KS256: Digikey $62 with no stock, Newark $81 with 7 in stock, Mouser $67 with 18 in stock
***Both are electrically the same and the physical dimensions are the same
***Both are 256 pulses per revolution
**CTR Magnetic shaft encoder
***1024 pulses per revolution
*'''Optical Beam Sensors (Banner-like)'''
**Omron SW1839-ND or similar&nbsp;
***$70-$100
***[http://www.digikey.com/products/en?keywords=E3RB-DN11 2M http://www.digikey.com/products/en?keywords=E3RB-DN11%202M]
***[http://media.digikey.com/pdf/Data Sheets/Omron PDFs/E3F_E3R.pdf http://media.digikey.com/pdf/Data%20Sheets/Omron%20PDFs/E3F_E3R.pdf]
**[http://media.digikey.com/pdf/Data Sheets/Omron PDFs/E3F_E3R.pdf Panasonic EX-10 Series]
***$90+
***[http://www3.panasonic.biz/ac/e_download/fasys/sensor/photoelectric/catalog/ex-10_e_cata.pdf http://www3.panasonic.biz/ac/e_download/fasys/sensor/photoelectric/catalog/ex-10_e_cata.pdf]


== Sensor Measurements: ==
== Sensor Measurements: ==


*SW1839-ND
*MB1010 LV-MaxSonar-EZ1
**Ultrasonic (sonar) sensor
**Set up on bench at a height of 9"
**Monitored analog output with voltmeter - with the 5V supply, scaling is 9.76V/inch
**First tried a flat board approx 12X16 oriented perpendicular to the sensor:
***with board at 12", measurement was 10"
***with board at 16", measurement was 15"
***with board at 24", measurement was 23"
**With board laid down flat on tabletop, approx 3/4" thick:
***with board front edge at 24", measurement was 25"
***with board front edge at 16", measurement was 17"
**With board horizontal but held at the same height at the center of the sensor:
***with board front edge at 24", measurement was 22"
**With a Fuel ball on the tabletop, the center of the ball approx 6.5" below the center of the sensor::
***with the front of the ball at 12", measurement was 10"
***with the front of the ball at 16", measurement was 15"
***with the front of the ball at 24", measurement was 22"
**Conclusions:
***the sensor can be fooled by any object within it's field of view - the measurement will be of the closest object, even if it is not the largest object.
***Accuracy between different sized objects at the same distance may be about 2" variation.
***Depending upon the mounting height of the sensor, it will respond to objects on the floor.
***A narrower field of view might be desireable.
**Calibration:
***The sensor was power cycled with a shoebox&nbsp;at 24" from the sensor.
***The initial value was very repeatable at powerup with a reading of&nbsp;24.9"


= Archives =
= Archives =

Latest revision as of 14:46, 4 February 2017

Insert details/designs/drawings/info/notes relevant to overall electrical systems here....

Speed Controllers

Circuit Breakers

File:VB3 Spec Sheet.pdf

File:MX5 Spec Sheet.pdf

Sensors

Sensor Types

Sensor Measurements:

  • SW1839-ND
  • MB1010 LV-MaxSonar-EZ1
    • Ultrasonic (sonar) sensor
    • Set up on bench at a height of 9"
    • Monitored analog output with voltmeter - with the 5V supply, scaling is 9.76V/inch
    • First tried a flat board approx 12X16 oriented perpendicular to the sensor:
      • with board at 12", measurement was 10"
      • with board at 16", measurement was 15"
      • with board at 24", measurement was 23"
    • With board laid down flat on tabletop, approx 3/4" thick:
      • with board front edge at 24", measurement was 25"
      • with board front edge at 16", measurement was 17"
    • With board horizontal but held at the same height at the center of the sensor:
      • with board front edge at 24", measurement was 22"
    • With a Fuel ball on the tabletop, the center of the ball approx 6.5" below the center of the sensor::
      • with the front of the ball at 12", measurement was 10"
      • with the front of the ball at 16", measurement was 15"
      • with the front of the ball at 24", measurement was 22"
    • Conclusions:
      • the sensor can be fooled by any object within it's field of view - the measurement will be of the closest object, even if it is not the largest object.
      • Accuracy between different sized objects at the same distance may be about 2" variation.
      • Depending upon the mounting height of the sensor, it will respond to objects on the floor.
      • A narrower field of view might be desireable.
    • Calibration:
      • The sensor was power cycled with a shoebox at 24" from the sensor.
      • The initial value was very repeatable at powerup with a reading of 24.9"

Archives

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