จำหน่ายเกจวัดแรงดัน Pressure Gauge ทุกยี่ห้อ

ศูนย์รวมเครื่องมือวัดความดัน

Pressure sensor with I�C communication ? possibilities and boundary conditions

I�C was made to communicate over short distances between printed circuit boards and is a simple, 8-bit serial data bus. For the time being, it is not only PCB-mountable pressure sensors that use the I�C signal for data transfer, but additionally pressure sensors remote from customer electronics.
Remote sensors will often have the benefit of being less sensitive to contaminated or aggressive media and being able to measure directly at the process. In digital pressure gauge of sensors mounted on the circuit board, the sensor element is, in many cases, exposed right to the medium. With remote sensors, steel or ceramic generally serve because the wetted surface.
I�C circuit
The I�C bus, alongside both supply lines, requires only two further lines:
SCL (serial clock line)
SDA (serial data line)
Additional possibilities through I�C
The I�C bus is a well-known standard in electronics, offering additional possibilities for communication with a pressure sensor than with an analogue signal:
In the info protocol, as well as the pressure value, a temperature value and diagnostic information (for example an integrity test of the data transfer) can be transmitted with a status byte.
Several pressure sensors can be linked to a bus line as ?slaves? to the client electronics that functions as a ?master?.
On the client side, in contrast to the application of pressure sensors with analogue signals, the analogue-to-digital conversion of the pressure value for further signal processing is unnecessary because the pressure value has already been present in digital form. This plays a part in faster and easier signal processing.
The electronics for communication can be built with standard components readily available on the market.
Often, I�C signal pressure sensors may also be optimised to take less energy, making them ideal for battery-powered applications. In the WIKA portfolio, for example, this applies to the MPR-1 pressure sensor module.
Boundary conditions with the use of I�C
Since I�C isn’t a fieldbus, long wire lengths are not recommended. The maximum wire length depends, in detail, on the operating environment and the corresponding disturbing influences. I�C communication is best used in projects where in fact the pressure sensor or the pressure sensor module is integrated into the customer product and thus protected against external influences. It should also be noted that with any digitally processed signal, the response time because of discrete-time sampling will undoubtedly be somewhat slower than for an analogue, continuous signal.
Note
Your contact person will be happy to assist you to with any more questions on digital interfaces.
Distributed Intelligence
Distributed Intelligence on the integration of pressure sensors into hydraulic systems
Fill below form and we’ll send you the whitepaper ?Distributed Intelligence?.
Name
Company
E-mail
Send
We?re committed to your privacy. We?ll use your information to get hold of you about our services and products. Contact us at socialmedia@wika.com to revoke your permission to utilize your information.