ST意法半导体
直播中

叶紫薇

7年用户 233经验值
私信 关注
[问答]

LSM9DS1磁灵敏度真的对10倍敏感吗?

在最敏感的范围内,LSM9DS1的磁灵敏度为0.14 mguass / LSB。 LIS2MDL是1.5 mguass / LSB。 LSM9DS1真的对10倍敏感吗?如果是这样,它似乎是车道传感器等应用的最佳选择,因为它可以在车辆经过时检测到较小的干扰。另一方面,它是一个较旧的设计,所以它应该用于新设计吗?是否存在具有相同或相似灵敏度的备用部件?

#lsm9ds1磁性灵敏度

以上来自于谷歌翻译


以下为原文




The magnetic sensitivity for the LSM9DS1 is 0.14 mguass/LSB on its most sensitive range.  The LIS2MDL is 1.5 mguass/LSB.  Is the LSM9DS1 really 10X more sensitive?  If so, it would seem the best choice for applications like a driveway sensor since it could detect smaller disturbances as vehicles passed by.  On the other hand, it is an older design, so should it be used in new designs?  Is there an alternate part with the same or similar sensitivity?

#lsm9ds1-magnetic-sensitivity

回帖(2)

曾玲娟

2018-10-10 11:04:04
是的,LSM9DS1更敏感,Full Scare也低4高斯,如果LIS2MDL满量程为50高斯。
我不知道车辆经过时磁场干扰有多大,它将取决于许多变量。请注意,磁场中可能存在其他干扰,因此您必须主要区分哪一个是由车辆引起的。就个人而言,我认为你不需要那么高的敏感度。
LSM9DS1仍然是活动产品,因此可以使用它。
无论如何,我会建议你做一些试验,看看你想要分析的磁场的真正价值是什么。

以上来自于谷歌翻译


以下为原文




Yes, the LSM9DS1 is more sensitive, the Full Scare is also lower 4 gauss, in case LIS2MDL the full scale is 50 gauss.
I don't know how big is the magnetic disturbance when the vehicle passed by, it will be dependent on many variables. Please be aware there might be other disturbances in magnetic field so you will have to mainly distinguish which one is caused by the vehicle. Personally, I think you don't need so high sensitivity.
LSM9DS1 is still active product so it should be OK to use it.
Anyway I would recommend you to do some trials to see what are the real values of the magnetic field which you want to analyze.
举报

叶紫薇

2018-10-10 11:11:50
感谢您的反馈。我一直在试验LSM303,因为Adafruit有一个模块和代码,可以很容易地在Arduino上做。对于大多数车辆来说,检测范围相当不错(15-20英尺),但如果可能的话,我们希望更多的范围。我订购了LSM9D1的样品,并试试看。

以上来自于谷歌翻译


以下为原文




Thanks for the feedback.  I've been experimenting with the LSM303 since Adafruit had a module and code that made it easy to do on an Arduino. Detection range was pretty good (15- 20ft) for most vehicles, but we would like a little more more range if possible.  I have samples of the LSM9D1 on order and will give them a try.
举报

更多回帖

发帖
×
20
完善资料,
赚取积分