The importance of creating psychodiagnostic equipment, taking into account modern informational capabilities, is considered. The purpose of the work is to develop a conceptual model of an information processing system with the ability to represent two- and three-dimensional test signals, remote control of the testing process, data collection and storage on a remote server. The use of the IoT concept is proposed to create a conceptual model of an information processing system with a remote control function. The structure of an information processing system containing a control unit, a testing unit, an unit for receiving and transmitting data, and an unit for processing and storage data is considered. The components of the testing unit and their interaction with each other and the components of receiving and transmitting data are considered. A description of the devices for 2- and 3- dimensional test signals is given. A model of the device “Cube” for the three-dimensional representation of light signals has been created. The structure of the information processing system database has been developed and presented.