Vernier Motion Encoder System User Manual download pdf

Vernier Motion

Encoder System

(Order Code: VDS-EC)

The Vernier Motion Encoder System

is a Vernier Dynamics System outfitted

for the precise study of dynamics cart motion without the use of ultrasonic motion

detectors. The encoder system consists of several parts:

 A track with an encoder strip along the length of the track

 A dynamics cart with an optical encoder and infrared (IR) transmitter

 A receiver, attached to the end of a track

The encoder strip consists of alternating black and white bars with a 4 mm period,

allowing the optical sensor to detect the passage of the bars as the cart moves. With

two sensors appropriately placed, a change in position with 1 mm resolution can be

determined, as well as the direction of travel. A narrow infrared beam transmits

motion data to a receiver.

No alignments or adjustments are necessary, as the receiver attaches firmly to the

track, and the cart rides in slots on the track. The IR beam is not disturbed by

reflections from nearby objects.

The system is designed for use in physics and physical science courses for motion

and energy experiments. An optional Optics Expansion Kit (order code: OEK)

converts the track to an optics bench.

Some typical experiments done with the system include

 Motion under zero acceleration

 Motion under constant acceleration with the ramp inclined

 Inelastic collisions using the included hook-and-pile tabs

 Elastic collisions using the included magnetic bumpers

Parts Included with the Vernier Motion Encoder System

 Motion Encoder Cart with magnetic and hook-and-pile end caps

 Motion Encoder Receiver

 Plunger Cart with magnetic and hook-and-pile end caps

 Mass – 500 g

 Combination 1.2 m dynamics track/optics bench with encoder strip

 Adjustable leveling feet

 Mounting hardware for Dual-Range Force Sensor and accelerometers

 Adjustable End Stop

 Motion Detector Bracket

Patent Pending

 2 Photogate Brackets

 Rod Clamp

 Allen wrench 3/32 inch

Collect Data with the Vernier Motion Encoder System

This sensor can be used with the following interfaces to collect data:

 Vernier LabQuest

as a standalone device or with a computer

 Vernier LabQuest

Mini with a computer

 Vernier LabPro

with a computer

WARNING: The Motion Encoder Receiver is not compatible with the Texas

Instruments TI-Nspire Lab Cradle. Connecting the Receiver to the Lab Cradle will

render the Cradle inoperative, requiring repair by Texas Instruments.

Essential steps for using the Vernier Motion Encoder System:

1. Attach the receiver to the end of the track, matching the encoder strip on the track

to the markings on the receiver.

2. Place the track on a level surface.

3. Insert two AAA batteries (not included) into the encoder cart.

4. Connect the receiver to an interface such as a LabQuest 2. If using a computer,

connect the interface to your computer, and launch Logger Pro.

5. Turn on the cart by pressing the power button. It will glow blue when the cart is

on.

6. Place the cart on the track, wheels in grooves, with the blue light facing the

receiver.

7. Begin data collection, and let the cart roll.

Data-Collection Software

This sensor can be used with an interface and the following data-collection software.

 Logger Pro 3 This computer program is used with LabQuest or LabPro.

Version 3.8.6.2 or newer is required.

 LabQuest App This program is used when LabQuest is used as a standalone

device. Versions 1.7.1 for the original LabQuest and 2.2.1 for the LabQuest 2,

or newer, are required.

NOTE: Vernier products are designed for educational use. Our products are not

designed nor are they recommended for any industrial, medical, or commercial

process such as life support, patient diagnosis, control of a manufacturing process, or

industrial testing of any kind.

Specifications

Measurement Range

1 m range

2 m range

1.2 m track

2.2 m track

Accuracy and Resolution 1 mm

Optimum data-collection rate 15–30 Hz

1 2 3 4 5 6 7

Summary of Contents

Page 1 - Encoder System

Vernier Motion Encoder System (Order Code: VDS-EC) The Vernier Motion Encoder System* is a Vernier Dynamics System outfitted for the precise stud

Page 2

3 Calibration of the Vernier Motion Encoder System This sensor is equipped with circuitry that supports auto-ID. When used with LabQuest, LabQuest 2,

Page 3

5 Photogate Bracket Photogate Brackets are attached to the side of the track. With the nut loosely on the T-handled bolt, slide the nut into the side

Page 4 - Magnetic Bumpers

7 The Additional Mass (MASS) The 500 g mass is used to double the mass of the cart. 1. Insert the hex head of the #10-32 x 1-3/4″ screw into either o

Page 5

9 The Low-g Accelerometer (LGA) The LGA is attached to one of the side slots of the cart using the #10-32 x 3/8″ hex head screw and the small threade

Page 6

11 Wireless Dynamics Sensor System For connection to a Vernier dynamics cart use a 5/8" × 10-24 binding barrel and a hex-head bolt (1" × 10

Page 7 - Warranty

13 Dual-Range Force Sensor (order code: DFS-BTA) The Dual-Range Force Sensor measures pushes and pulls up to 50 N. Wireless Dynamics Sensor System (

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