CP8140AT

CP8140AT (a touch screen controller) is a data acquisition board designed by DATAQ Instruments which is composed of several parts, including potentiometer, signal generator and signal analysis modules, that are combined together to form a compact and robust device. The major components of the CP8140AT are an embedded industrial touchscreen LCD screen (TFT-LCD), an ARM Cortex-M4 based microcontroller for signal acquisition, a pair of USB interface for data communication and power, and a control panel for user calibration and configuration. It is equipped with a special signal conditioning circuit to process the signals from four different input channels. These input channels include: touch sensor, temperature, humidity, distance and acceleration sensors.

The CP8140AT is primarily used for industrial, equipment, and automation applications which require the collection, measurement and monitoring of touch signals for various operations. Through this device, users can easily configure and customize their touchscreens to provide the most accurate touch response for any specific production process. As an integrated touch device, the CP8140AT can also handle up to 16 multiple touch points with up to 3D sensitivity. Consequently, it provides highest accuracy that increases efficiency and reduces user errors. Additionally, CP8140AT has an integrated dead-point calibration, which can minimize drift over long-term use, thus improving the accuracy of the device.

The working principle of CP8140AT mainly operates on the principle of capacitance. Once the user’s finger comes close to the touch surface, its changing capacitance generates a current which will be sent to the microcontroller through a pair of built-in OLED connectors. The microcontroller will then process the signal and detect the specific coordinates which will be used to pinpoint the user’s touch location. The microcontroller will also detect the operational parameters such as pressure, temperature, etc. and report the information to the connected computer or development platform.

The CP8140AT is an ideal choice for industrial, medical and any other application where high-precision, robust and accurate touchscreens are desired. It is an affordable, easy to configure and reliable device that provides excellent performance and long-term stability. Moreover, it can be used for various applications such as equipment testing, process control and automation, machine automation, and multimedia services.