CP8141BT

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Data Acquisition - Touch Screen Controllers

The CP8141BT is a high performance touch screen controller, which is developed by Massachusetts Institute of Technology. This touch screen technology is integrated in various applications, including aviation, marine, automotive and industrial applications. The CP8141BT is a very reliable and secure solution for touch screen applications.

Application Field

The CP8141BT is mainly used in applications where touch screen type of data entry is needed. It is suitable for various aviation and marine applications as it has a very high reliability and security. Some of the most well known applications of the CP8141BT include flight attendant tablets, telemetry in aircraft and passenger control systems. Moreover, this touch screen controller is also used for vehicle control systems such as Anti-lock Brake systems (ABS), Electronic Stability Control (ESC) and Airbag systems.

Working Principle

The CP8141BT employs a method known as ‘proprietary ASIC touch screen sensing’ to sense the touch of a finger or stylus. This feature provides faster response and higher accuracy than traditional touch screen technologies. The working principle involves the application of low frequency (50 kHz-1500 kHz) capacitive sensing which interprets the capacitance of a conductive material against an insulator. The capacitance value measured is used to detect and measure the user’s interaction with the touch panel.

The CP8141BT also uses a feature called ‘probe recognition’ to identify the type of finger or probe used. The recognition is made possible by measuring the characteristics of the flow rate and detection time of the probe signal. These characteristics are compared against a reference profile stored on the device and the results are used to identify the type of probe being used.

The touch screen controller is also able to discriminate the changing location of the finger, stylus or probe by continually measuring the capacitance values and interpreting the change in direction. This ensures that the CP8141BT detects the touch input with maximum accuracy even if the user’s finger is moved quickly on the touch screen.

Conclusion

The CP8141BT touch screen controller is a reliable, secure and accurate solution for touch screen data entry applications. It employs a proprietary ASIC touch screen sensing technology that provides high speed and accuracy. This makes the CP8141BT a superior choice for various aviation, marine, automotive and industrial applications where quick and precise data entry is a must.

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