TI中文支持网Part Number:LDC1612
Hello, I have two urgent questions about the use of LDC1612.
the first question:
I use LDC1612 to measure the unevenness of the metal plane. There are two processes required here. One is to establish the relationship between sensor output and distance, and the other is to use LDC1612 to measure the height value. There are two questions here:
1. If the metal plane is inclined or the metal surface is uneven, use a coil to measure the inductance value and then convert it into a distance value. What does this distance value (inductance value) represent? Is it the average value of this inclined plane?
2. If the inclination of the metal plane used to establish the relationship between the sensor and the distance is inconsistent with the inclination of the measured plane, is the distance value of the measured plane reliable? In other words, if I establish the relationship between the sensor output value and the distance on a plane with an inclination of 5°, then I use this relationship to measure the planes with an inclination of 0° and 10°. Is the calculated distance accurate?
the second question:
I use LDC1612 to measure a heated metal plane. Due to thermal radiation, the temperature of the coil plate of LDC1612 will change. What is the relationship between the output value of the sensor and the temperature of the coil plate? Is there any formula or related information?
Looking forward to your reply, thank you.
Amy Luo：
您好，
LDC1612 测量的是传感器的频率，输出code 正比与传感器频率ƒSENSOR/ƒREF（参考频率）：
max chen 说： 1. If the metal plane is inclined or the metal surface is uneven, use a coil to measure the inductance value and then convert it into a distance value. What does this distance value (inductance value) represent? Is it the average value of this inclined plane?
不一定是斜面距离的平均值，我认为这个需要您做测试找规律。
max chen 说：In other words, if I establish the relationship between the sensor output value and the distance on a plane with an inclination of 5°, then I use this relationship to measure the planes with an inclination of 0° and 10°. Is the calculated distance accurate?
应该不准确，因为测量环境改变了。
max chen 说： I use LDC1612 to measure a heated metal plane. Due to thermal radiation, the temperature of the coil plate of LDC1612 will change. What is the relationship between the output value of the sensor and the temperature of the coil plate? Is there any formula or related information?
很抱歉，我没有找到相关信息。我建议您将问题发布在E2E英文技术论坛上，请更了解这个芯片的资深英文论坛工程师为您提供帮助，英文论坛对应子论坛链接：
https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum
同时将下面FAQ分享给您：
[FAQ] Inductive sensing FAQ – Frequently asked questions
,
max chen：
1.LDC1612 测量的是传感器的频率，输出code 正比与传感器频率ƒSENSOR/ƒREF（参考频率）
=> LDC1612 可以有3种输出：raw，电感，频率，当要计算传感器输出和距离的关系时，这3种输出都可以使用吗？还是有其他要求？
2.应该不准确，因为测量环境改变了。
=> 如果我的带测量金属平面存在倾斜，或者表面凹凸时，此时如何计算金属平面上不同位置和传感器线圈的距离？
,
Amy Luo：
1、都可以，因为它们之间存在特定的关系；
2、这个问题比较棘手，也建议您在E2E英文技术论坛上咨询资深英文论坛工程师。
