PSOC4是否需要保护传感器？

你可以检查AN92249和CY8CKIT-024。该试剂盒要求具有接近传感器的液体耐受性信息。
CY8CKIT-024具有两个铜迹线-一个用作接近传感器，另一个环可以连接到GND/屏蔽以满足耐水性。
代替外环连接到GND/SHILD，您可以使用这个作为保护传感器，以防止当触摸表面上存在大量水时，任何错误触发。
保护传感器的设计取决于实际的电路板布局。例如，在您的情况下，当水滴落在传感器上时，您希望能够防止错误触发。因此，您应该在接近传感器内部设置一个回路（以防止任何水从环内移动到外环）和接近传感器外部的一个环路（以防止任何水从环外移动到环路内）来充当保护传感器。
-钱森



     以下为原文
  You can check AN92239and CY8CKIT-024. This kit has required information on liquid tolerance with proximity sensor.
 
The CY8CKIT-024 has two copper traces - One acts as a proximity sensors and the other loop can be connected to GND/Shield for water tolerance.
Instead of connecting the outer loop to GND/Sheild, you can use this as a guard sensor to prevent any false trigger when large quantity of water is present on the touch surface.
 
Guard sensor design depends on the actual board layout. For example, in your case, you want to be able to prevent false trigger when a water droplet falls on the sensor. So, you should have one loop inside the proximity sensor (to prevent any water moving from inside the loop to outside loop) and one loop outside the proximity sensor (to prevent any water moving from outside the loop to inside the loop) to act as guard sensor.
 
-Chethan

你好，Chethan，
谢谢你的快速帮助，我会在设计中使用你的建议！
我已经与CY8CKIT-024一起工作了- 0024。没有提到警卫传感器，但像你描述的盾牌。在CY8CMBR31 16数据表中，在我看来，好像有一个特定的（或特定的）引脚用于保护传感器。是这样吗？或者我可以把保护传感器连接到任何其他引脚上吗？
不管怎样，当我激活CSD设置中的保护传感器并转到调谐器时，保护传感器就像触摸按钮和接近传感器一样出现。是否有可能或需要以任何方式调整防护传感器？
谢谢您！



     以下为原文
  Hello Chethan,
 
thanks for your quick help, i will use your advice in my design!
 
I already worked with the CY8CKIT-024 in combination with -0024. There is no guard sensor mentioned, but a shield like you described it. Do in the CY8CMBR3116 datasheet it seems to me like there is a particular (or specific) pin for the guard sensor. Is that right or can i connect the guard sensor to any other pin?
 
Anyway, when i activate the guard sensor in the CSD settings and go to the tuner, the guard sensor comes up like the touch buttons and the proximity sensor. Is there a possibility or need to tune the guard sensor in any way?
 
Thank you!

在MBR3设备中，固件是固定的，因此传感器引脚和保护传感器引脚是固定的。
对于一般PSoC 4芯片，任何IO都可以充当保护传感器。事实上，保护传感器只是另一个基于CopSink组件的按钮传感器。应用程序代码使用保护传感器的ON/OFF状态，并拒绝常规传感器上的任何错误键触摸。
保护传感器必须以一种在正常操作期间不被激活的方式进行调谐。例如，在你的情况下，只有当用户触摸它（或者水滴落在它上）时，才可以打开保护传感器。它不会因为手的接近而被激活。
-钱森



     以下为原文
  In the MBR3 device the firmware is fixed and hence the sensor pins and guard sensor pins are fixed.
 
For general PSoC 4 chip, any IO can act as a guard sensor. In fact, guard sensor is just another button sensor according to the CapSense component. The application code uses the ON/OFF status of guard sensor and rejects any false key touch on the regular sensors.
 
Guard sensor has to be tuned in such a way that it does not get activated during a normal operation. For example, in your case, guard sensor should only be turned on when user touches it (Or a water droplet falls on it). It should never get activated due to proximity of the hand.
 
-Chethan