[问答]

LSM9DS1的磁传感器是否经过工厂校准

问答对人有帮助，内容完整，我也想知道答案 0 你好论坛和ST支持，我想知道LSM9DS1的磁传感器是否经过工厂校准。目前，它看起来好像他们根本没有校准。尽管所有传感器都放置在同一块PCB上并且环境非常相似，但我测量的硬铁和软铁计算导致了截然不同的结果。如果他们经过校准，你可以验证一下吗？如果没有，是否有可能获得工厂校准的传感器，因此我必须每个PCB设计运行我的测量和校准因子而不是每个单元？另一个问题涉及到：您能否提供一种工具来计算测量中的硬铁和软铁补偿因子（CSV文件）？到目前为止，我正在使用我在互联网上找到的免费工具，它工作正常，但只计算硬铁偏移量。另一个应该计算两者（硬和铁软效应）因子的工具无法处理每一组数据，有时我会得到想象的结果（这是一个matlab脚本）。提前致谢 #soft-iron＃lsm9ds1＃hard-iron 以上来自于谷歌翻译以下为原文 Hello Forum and ST support, I was wondering if the magnetic sensors of the LSM9DS1 are factory calibrated or not. At the moment, it looks to me as if they're not calibrated at all. My hard and soft iron calculation from measurement leads to extremely different results, despite all sensors are placed on the same PCB and in very similar environments. Could you verify for me if they're calibrated or not? If not, is there a possibility to get factory calibrated sensors, so that I'd have to run my measurements and calibration factors only once per PCB design and not for every single unit? Another question relates to that: Can you provide a tool that calculates the hard iron and soft iron compensation factors from measurements (CSV file)? As by now, I'm using a free tool I found somewhere in the internet, which works fine, but only calculates the hard iron offset. Another tool which is supposed to calculate factors for both (hard & soft iron effects) can't handle every set of data, sometime I get imaginary results (it's a MATLAB script). Thanks in advance #soft-iron #lsm9ds1 #hard-iron 0
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答案对人有帮助，有参考价值 0 你好，是的，LSM9DS1磁强计已经过工厂校准。如果“所有传感器放置在同一块PCB上并且处于非常相似的环境中”，尤其是涉及软铁，则不可能产生“极其不同的结果”。必须有一些不同的问题。关于硬铁，您可以在数据表的“表3.传感器特性”中找到“M_TyOff”参数的典型变化。另请参阅“注3”。即使LSM9DS1 SelfTest是STMicroelectronics的机密信息，您也可以使用以下步骤执行简单的SelfTest： 1。读取ACC XYZ输出（ACC_NOST_DATA）读GYR XYZ输出（GYR_NOST_DATA）读取MAG XYZ输出（MAG_NOST_DATA） 2。启用ACC ST（ST = SelfTest）读取ACC XYZ输出（ACC_ST_DATA）验证：ACC_NOST_DATA - ACC_ST_DATA =每个轴的POSITIVE值禁用ACC ST 3。启用GYR ST 读GYR XYZ输出（GYR_ST_DATA）验证：GYR_NOST_DATA - GYR_ST_DATA =每个轴的正值禁用GYR ST 4。启用MAG ST 读取MAG XYZ输出（MAG_ST_DATA）验证：MAG_NOST_DATA - MAG_ST_DATA =每个轴的NEGATIVE值提供硬/软铁计算的工具将在未来几周内在www.st.com/mems上提供，定期搜索“osxMotionMC”（磁力校准）包。您还需要X-CUBE-MEMS1软件包v3.0.0（目前可用版本为v2.1.0）和Unicle-GUI应用程序。它们都应该同时发布。然后按照文档中的安装说明进行操作。最好的祝福，切赫以上来自于谷歌翻译以下为原文 Hello, Yes, LSM9DS1 Magnetometers are factory calibrated. It is not possible to have ''extremely different results'' if ''all sensors are placed on the same PCB and in very similar environment'' especially concerning Soft Iron. There must be some different issue. Concerning Hard Iron you can find typical variation in the 'M_TyOff' parameter in ''Table 3. Sensor characteristics'' of the Datasheet. Please see also ''Note 3''. Even if LSM9DS1 SelfTest is STMicroelectronics confidential information, you can preform simple SelfTest using the following procedure: 1. Read ACC XYZ outputs (ACC_NOST_DATA) Read GYR XYZ outputs (GYR_NOST_DATA) Read MAG XYZ outputs (MAG_NOST_DATA) 2. Enable ACC ST (ST=SelfTest) Read ACC XYZ outputs (ACC_ST_DATA) Verify that: ACC_NOST_DATA - ACC_ST_DATA = POSITIVE value for each axis Disable ACC ST 3. Enable GYR ST Read GYR XYZ outputs (GYR_ST_DATA) Verify that: GYR_NOST_DATA - GYR_ST_DATA = POSITIVE value for each axis Disable GYR ST 4. Enable MAG ST Read MAG XYZ outputs (MAG_ST_DATA) Verify that: MAG_NOST_DATA - MAG_ST_DATA = NEGATIVE value for each axis The tool providing Hard/Soft Iron calculations will be available on www.st.com/mems in coming weeks, search for 'osxMotionMC' (Magneto-Calibration) package regularly. You'll also need the X-CUBE-MEMS1 package v3.0.0 (so far available version is v2.1.0) and Unicle-GUI application for this tool. They should all be released at the same time. Then follow the installation instructions in the documentation. Best regards, Petr

2018-9-18 17:02:29 评论举报周芳卿