PPCGeeks Forums HTC Arrive HTC HD2 HTC Thunderbolt HTC Touch Pro 2 HTC Evo 4G HTC Evo 3D Samsung Galaxy S II Motorola Droid X Apple iPhone Blackberry
Go Back   PPCGeeks > Windows Mobile > WM HTC Devices > HTC Touch Pro 2

Notices



Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 12-07-2009, 09:44 AM
WhiteBlazer01's Avatar
AWESOME VIP Member!!
Offline
Pocket PC: HTC Touch Pro 2 - SIM & HSPL unlocked
Carrier: Verizon
Location: So Cal
 
Join Date: Feb 2007
Posts: 1,531
Reputation: 975
WhiteBlazer01 knows their stuffWhiteBlazer01 knows their stuffWhiteBlazer01 knows their stuffWhiteBlazer01 knows their stuffWhiteBlazer01 knows their stuffWhiteBlazer01 knows their stuffWhiteBlazer01 knows their stuffWhiteBlazer01 knows their stuff
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
G-Sensor vs. Accelerometer... difference?

So, just out of curiosity, I read that we (TP2) have a G-Sensor, and iPhone has an Accelerometer. What is the difference, if any?
__________________
Reply With Quote
  #2 (permalink)  
Old 12-07-2009, 11:04 AM
ihavenoclue's Avatar
N00b
Offline
Pocket PC: HTC Touch Pro 2
Carrier: U.S. Cellular
 
Join Date: Jun 2008
Posts: 30
Reputation: 5
ihavenoclue is a n00b
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Re: G-Sensor vs. Accelerometer... difference?

They're the same thing to my knowledge
__________________
Radio: 3.42.5
XDA Name: vicbush
sites.google.com/site/victorbush/htc-6800-1
Reply With Quote
  #3 (permalink)  
Old 12-07-2009, 12:43 PM
WhiteBlazer01's Avatar
AWESOME VIP Member!!
Offline
Pocket PC: HTC Touch Pro 2 - SIM & HSPL unlocked
Carrier: Verizon
Threadstarter
Location: So Cal
 
Join Date: Feb 2007
Posts: 1,531
Reputation: 975
WhiteBlazer01 knows their stuffWhiteBlazer01 knows their stuffWhiteBlazer01 knows their stuffWhiteBlazer01 knows their stuffWhiteBlazer01 knows their stuffWhiteBlazer01 knows their stuffWhiteBlazer01 knows their stuffWhiteBlazer01 knows their stuff
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Re: G-Sensor vs. Accelerometer... difference?

That's what I was thinking too, but I wonder why they are called different names. Is G-Sensor patented by HTC? maybe just a branding thing? I'm just wondering. I know they essentially do the same thing. Also, I hear Wii controllers being referenced to having accelerometers. I never heard a Wii controller having a G-Sensor, so maybe there's something to it? I don't know...
Reply With Quote
  #4 (permalink)  
Old 12-07-2009, 12:54 PM
MordyT's Avatar
Retired Staff-MordyT.com
Offline
Pocket PC: HTC Touch Pro 2
Carrier: Sprint
 
Join Date: Feb 2009
Posts: 2,190
Reputation: 8445
MordyT is a trusted member of the communityMordyT is a trusted member of the communityMordyT is a trusted member of the communityMordyT is a trusted member of the communityMordyT is a trusted member of the communityMordyT is a trusted member of the communityMordyT is a trusted member of the communityMordyT is a trusted member of the communityMordyT is a trusted member of the communityMordyT is a trusted member of the communityMordyT is a trusted member of the community
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Wirelessly posted (HTC Touch Pro2: Opera/9.5(Microsoft Windows; PPC; Opera Mobi/16643; U; en) HTC_Touch_Pro2)

If I am not mistaking, the accelerometor can track motion and therby track orentation by seeing changes of motion while a Gsensor can tell oriantation as well as track motion from changes in orentations.
__________________
Use Thanks! to show someone that they helped you!
Looking for ways to interface Google Voice with your Phone? Click Here!
Quote:
Originally Posted by CozBoogie View Post
5. Everyone who thanks my post will receive instant karma!
Quote:
Originally Posted by flyers2114 View Post
MordyT is right.
Reply With Quote
  #5 (permalink)  
Old 07-05-2010, 10:08 AM
sriiyyer's Avatar
Lurker
Offline
Pocket PC: Apple
Carrier: Airtel India
 
Join Date: Jul 2010
Posts: 1
Reputation: 0
sriiyyer is a n00b
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Re: G-Sensor vs. Accelerometer... difference?

G-sensor is a gyroscope, in other words an orientation sensor.
motion sensor is more accurate, it MAY or MAY not have G-sensor's capability, this depends on the software implementation. but the hardware itself is capable of detecting and reacting to all kinds of movement.

G-sensor needs _relatively_ sudden movements to activate the gyroscope (think of a marble in box), if the phones (the box) is in landscape, and you tilt it to portrait, the gryo detects it (ie marble rolls to one side). However, if you keep the phone/box's orientation the same, and move the phone closer or further from you (assumign you ar eholding the phone): now if you move it slowly, the marbles won't roll, this is g-sensor. becaue it can't detect this movement. but if you suddenly jerk the phone/box, even if the orientation is the same, the g-sensor should detect it (ie the marble will move). ummm.. just like those dice games on iphone/itouch (if you 've seen the latest itouch commercial).

motion sensor detects all kinds of movements, it's only up to the software to decide if all functionalities are implented or only "up till" the G-sensor capabilities are implemented or something else. best example, G1's compass view, slow movement with the phone in the same orientation will pan around the map.

that being said even the motion sensor has its limits, if you move the phone uber slowly, i bet it won't detect the motion, unless it's military grade (read: 007 gadget )
Reply With Quote
  #6 (permalink)  
Old 07-05-2010, 12:39 PM
Miami_Son's Avatar
Regular 'Geeker
Offline
Pocket PC: Samsung Captivate (GSM)
Carrier: AT&T
 
Join Date: Apr 2010
Posts: 378
Reputation: 485
Miami_Son is becoming a PPCGeeks regularMiami_Son is becoming a PPCGeeks regularMiami_Son is becoming a PPCGeeks regularMiami_Son is becoming a PPCGeeks regularMiami_Son is becoming a PPCGeeks regular
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Re: G-Sensor vs. Accelerometer... difference?

Accelerometer and G-sensor are NOT the same as it applies to phones. The LG Incite (my last phone) has an accelerometer, but could not use programs or games designed for a G-sensor. The TP2, Tilt 2 has a true G-sensor. An accelerometer can only detect whether the phone is in portrait or landscape mode, basically it reads the phone orientation in 1 plane (horizontal or vertical), whereas a G-sensor reads orientation in 3D. It can tell if the phone is horizontal or vertical and by how many degrees each way and side to side.

Both terms are actually misused in this application. An accelerometer or G-sensor is a device used for measuring movement, particularly velocity and deceleration, not orientation.
__________________
Samsung Captivate (new love)
HTC Tilt 2 (for sale, soon to be gone)
LG Incite (long gone)

Last edited by Miami_Son; 07-05-2010 at 12:43 PM.
Reply With Quote
  #7 (permalink)  
Old 07-06-2010, 12:44 AM
roz1's Avatar
N00b
Offline
Pocket PC: Touch
Carrier: Sprint
 
Join Date: Apr 2008
Posts: 28
Reputation: 20
roz1 is just getting started
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Re: G-Sensor vs. Accelerometer... difference?

Actually, I believe that accelerometer and G-sensor refer to the same thing.

G-sensor is a marketing-type name for accelerometers. An accelerometer can measure linear acceleration such as the force of gravity pulling it down (that's how it knows your orientation). This where they get the "G" from, or similarly G forces that a fighter pilot would feel. As Miami Son mentioned above, not all accelerometers are created equal, but most new phones have pretty decent accelerometers since they are now relatively cheap.

Gyroscopes measure the rate of rotation (i.e. twisting motions).

The TP2 has an accelerometer.
The iphone has an accelerometer. If I'm not mistaken, the iphone 4 also adds a gyroscope.
Reply With Quote
  #8 (permalink)  
Old 07-06-2010, 11:27 AM
bastian74's Avatar
PPCGeeks Regular
Offline
Pocket PC: touch pro2
Carrier: sprint
 
Join Date: Dec 2009
Posts: 186
Reputation: 90
bastian74 is becoming a great contributor
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Re: G-Sensor vs. Accelerometer... difference?

The TP2 "g-sensor" is a 3-axis accelerometer. That is all.
Reply With Quote
  #9 (permalink)  
Old 07-06-2010, 02:12 PM
Miami_Son's Avatar
Regular 'Geeker
Offline
Pocket PC: Samsung Captivate (GSM)
Carrier: AT&T
 
Join Date: Apr 2010
Posts: 378
Reputation: 485
Miami_Son is becoming a PPCGeeks regularMiami_Son is becoming a PPCGeeks regularMiami_Son is becoming a PPCGeeks regularMiami_Son is becoming a PPCGeeks regularMiami_Son is becoming a PPCGeeks regular
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Re: G-Sensor vs. Accelerometer... difference?

I think this is a case of manufacturers adopting a word, mistakenly, as a marketing tool. In my line of work we use accelerometers as measuring devices. They tell us things like velocity, deceleration, force, etc...all things related to actual movement and not static orientation.
If you look at the calibration app for the "accelerometer" on the TP2/Tilt 2 you will see a bubble level. When has a bubble level ever been referred to as an accelerometer? It isn't. It doesn't measure movement. In fact, it specifically is designed to be used on a non-moving surface to get an accurate reading. Calling it an accelerometer is a misnomer.
Unfortunately, phone manufacturers probably thought it sounded better than saying the phone has a gyroscope in it. Most people associate a gyro with those circular toys we played with as kids and would probably scratch their heads at the idea that there was one inside a phone. Few people know what an accelerometer is, so it sounded much better as a marketing phrase. G-Sensor is just an elevation of the marketing art.
Those of us who tinker with things like R/C helicopters know that electronic gyros exist that can be put into a package smaller than your thumb. We would never consider calling them accelerometers, though.
Reply With Quote
  #10 (permalink)  
Old 07-06-2010, 02:17 PM
bastian74's Avatar
PPCGeeks Regular
Offline
Pocket PC: touch pro2
Carrier: sprint
 
Join Date: Dec 2009
Posts: 186
Reputation: 90
bastian74 is becoming a great contributor
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Re: G-Sensor vs. Accelerometer... difference?

It is an accelerometer. Holding the phone still does have an acceleration applied to it, the pull of the earth. If you throw the phone up and let it free fall the accelerometer will read zero on all 3 axis.

Download shocktester. It will print out acceleration in all 3 axis but will not show any rotation. The bubble level works by detecting the amount of acceleration in the horizontal plane, relative to the phone. A gyroscope would make a terrible level.

And a bubble level is in and of itself an accelerometer. If you hold one level and accelerate horizontally you'll see the bubble move towards the direction of acceleration.

Last edited by bastian74; 07-06-2010 at 03:24 PM.
Reply With Quote
Reply

  PPCGeeks > Windows Mobile > WM HTC Devices > HTC Touch Pro 2

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


All times are GMT -4. The time now is 10:39 AM.


Powered by vBulletin® ©2000 - 2020, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
©2012 - PPCGeeks.com