Garmin Aerosensor Bedienungsanleitung

Aerosensor Quickstart Guide V1.1 1

aerosensor

Quickstart Guide V1.1

08.10.23

Aerosensor Quickstart Guide V1.1 2

Contents

Aerosensor Quickstart Guide................................................................................................3

Aerosensor setup..................................................................................................................4

Aerosensor calibration ..........................................................................................................6

Aero testing guidance ...........................................................................................................7

Data Analysis........................................................................................................................7

Aerosensor basics ................................................................................................................8

Aerosensor Quickstart Guide V1.1 3

Aerosensor Quickstart Guide

What follows outlines the basic setup of Aerosensor. For more detailed information please

refer to the ACS manual which you can find at the following link:

https://aerosensor.tech/pages/getstarted/

ACS installation

Download the ACS app to your Garmin. Go to Garmin ConnectIQ store and search for

“Aerosensor” or use link below.

https://apps.garmin.com/en-US/apps/0170243b-0384-4072-9e85-57030e4949a6

ACS screen layout

1. FIT file recording status: Red square means not recording, green triangle means

recording.

2. Aerobody connection and battery status.

3. Aerosensor connection status.

4. Aerosensor power and speed or speed/cadence sensor connection status. Green =

Aerosensor connected to sensor; orange = searching; red = not connected.

5. Aerosensor battery status.

6. Back key –in menus use to go back a step, or on data screens exists app. This may

be a button instead of touch screen icon depending on your Garmin Edge model.

7. Menu key. This may be a button instead of touch screen icon depending on your

Garmin Edge model.

Aerosensor Quickstart Guide V1.1 4

Aerosensor setup

1. Install

2. Pair ANT+ sensors

3. Calibrate PM

4. Start ACS App

5. Select test type

6. Connect device

7. Update settings

8. Check connections

9. Start activity

Aerosensor Quickstart Guide V1.1 5

1. Install Aerosensor securely, level, and centred on the bike using a go-pro mount.

2. Pair your power meter speed sensor to Garmin. We recommend dual sided

power meter, and magnet based speed sensor.

3. Calibrate power meter in Garmin, and set crank length if necessary.

4. Open ACS CIQ app on your Garmin bike computer.

5. Choose test type:

a. Road: for general road cycling.

b. Out and back: for cycling out and back along a stretch of road.

c. Velodrome trackless: for velodrome use without Aerodrome lap trigger.

d. Velodrome tracked: for velodrome use with Aerodrome lap trigger.

6. Connect Aerosensor to CIQ app.

a. Turn on Aerosensor. It should connect automatically. If not:

b. Menu > Connections > Aerosensor.

c. Wait for CIQ app to find device, then click on it to connect.

7. Input key parameters

a. Menu > Aerosensor Settings > Parameters > Edit Parameters

b. Most important parameters to set are:

i. Aero device calibration: Start with a value of 1.4.

ii. Total mass (your total mass i.e. you + bike + clothing)

iii. Wheel circumference (you can get from speed sensor info in Garmin,

or roll out wheel and measure distance on ground).

iv. Power meter scaling (Use 0.98 for all but hub based PMs)

v. CTF calibration offset if using an SRM PM7 or earlier PM. This is

the value reported when you calibrate your power meter on the

Garmin.

c. Be sure to “Push Parameters” after exiting this menu to save any changes.

8. Check connections, and start activity

a. Make sure your power meter and speed sensor are on, by rotating wheel and

pedals.

b. If paired then “PWR” and “SPD” icons in top right go green. If not see ACS

instructions.

9. Start activity

a. Press the start activity button on Garmin to start recording to FIT file. Note

the red square in the top right corner turns to a green triangle.

That’s it! You are now ready to go aero testing. For accurate results be sure to calibrate

your aerosensor every time you change bike,or make a substantial change in your position.

Don’t worry, you can do this at the same time as testing and post-correct your data, so no

specific runs are necessary. See next section.

Aerosensor Quickstart Guide V1.1 6

Aerosensor calibration

1. Out/back x 2

2. Average cal values

𝐴𝑣𝑔 𝐶𝑎𝑙 = 𝑆𝑢𝑚 𝐿𝑎𝑝 𝐶𝑎𝑙𝑠

𝐿𝑎𝑝 𝑐𝑜𝑢𝑛𝑡

In this example:

0.948 + 1.180 + 0.961 + 0.990

= 1.020

3. Post-correct CdA

𝐶𝑑𝐴 𝐶𝑜𝑟. = 𝐶𝑑𝐴

𝐴𝑣𝑔 𝐶𝑎𝑙

In the velodrome you

can do every run.

Outdoor you should

perform periodically.

Unless making large

changes to setup you

do not need to do this to

get correct result

directionally: lower CdA

is always lower CdA

even if cal factor

changes.

4. Calculate new cal

𝑁𝑒𝑤 𝐶𝑎𝑙 = 𝑂𝑙𝑑 𝑐𝑎𝑙 × 𝐴𝑣𝑔 𝐶𝑎𝑙

In our example

Old cal = 1.40

New cal = 1.400x1.020 = 1.428

5. Enter new cal.

The air “sees” you coming towards it due to high pressure build up ahead of you. For this

reason the air at Aerosensor’s location on your bike is slower than freestream. We need to

correct for this.

1. Perform at least two out/backs or 4 laps of velodrome.

a. Be sure to start recording (“Start activity” button on Garmin).

2. On page 9 of the CIQ app you see a “Cal” value for every valid lap. Take the

average of all of these values.

3. Post-correct your CdA values by dividing them by this value, i.e.

CdA_corrected = CdA_reported / Avg_cal

4. Calculate new calibration factor.

AeroCal_New = AeroCal_Old * Cal

5. Enter new “Aero device calibration”

Aerosensor Quickstart Guide V1.1 7

Aero testing guidance

•CdA data is only as accurate as the inputs. Make sure you check Aerosensor’s

settings in the ACS app before every test.

•Always calibrate power sensor before starting testing. Small calibration offsets can

result in a big error in CdA measurement.

•Always start and end your test block with a baseline repeat.

•Try to maintain a constant speed through each run.

•For out and back testing we recommend a stretch between 500 and 1000m.

•The more out and backs you do, the better the repeatability will be.

Data Analysis

•Data is recorded to FIT file. You can view the data in Garmin Connect, or download

the data to analyse in WKO or Golden Cheetah.

•More analysis tools are coming soon. Keep an out for announcements on our

mailing list and social channels.

oWe are shortly launching a collaboration with Aerotune to provide an online

platform tailored for Aerosensor analysis.

oThere will also be Excel sheets that automate more in-depth analysis,

available on our website soon.

Aerosensor Quickstart Guide V1.1 8

Aerosensor basics

Device specifications

Dimensions (H x W x D)

135 x 57 x 85mm

Mass

66g

Battery Life

57 hours

Wind speed resolution

+/- 0.1%

Wind angle resolution

+/- 0.1°

Altitude resolution

+/- 10cm

Layout

1. LED

2. Power button

3. Reset button

4. USB-C bung & charging port

5. Stem

6. Height/yaw adjustment screw

7. Go-pro mount

Button functions

•Power button:

oPress and release to turn on.

oPress and hold until LED turns off then release to shut down.

oPress and hold, push reset button, then release for full factory reset. This

resets the internal settings used to calculate CdA.

•Reset button:

oTo be used in case the device becomes unresponsive. Resets device without

erasing settings.

LED significance

The multi-colour LED indicates the device state as shown below:

Colour

Flashing

State

USB

Charge

Aqua

Normal

Unplugged

Normal

Red

Normal

Unplugged

Low

Amber

Slow

Off

Plugged in

Charging

Amber

Solid

Plugged in

Charging

Green

Slow

Off

Plugged in

Charged

Green

Solid

Plugged in

Charged

Note: Do not use sharp objects or tools to press buttons, this may result in damage

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