The CardioTAG portable Electrocardiogram (ECG) device was a college project for the microprocessors class. It enabled users to record ECG signals and wirelessly display this information on a handheld device. The device utilized a TI MSP430 microprocessor along with an analog front-end module to retrieve the signals from the ECG leads connected to the patient. The system used an SD card for data storage. In addition, the system had a Bluetooth module to connect to a mobile device wirelessly to review the data and to configure the device. The device could also function in standalone mode by using the integrated controls built in.

This project was done in one semester by a 4 man team composed of Luis Torres (PM), Juan Gómez, Andrés Cordero and myself under the group name Lebentek.

This was the first concept model rendered in 3D to test out the general shape, size and UI layout of the unit. To reduce the size of the physical unit to this model would require a PCB unit with all components integrated to it.

Another view of the first concept model.

A second iteration concept model taking into account the feedback of the professors regarding UI and functionality, as well as making it more aesthetically pleasing.

Icon logo for the CardioTag mobile application.

Concept art for the mobile app UI main menu page.

Concept art for the mobile app UI SD/data storage page.

Concept art for the mobile app UI graph page to see the live and stored ECG signal.

Unit in the process of integration and wiring for testing. One board hosted all components and another hosted the processor.

Final physical unit in its case. Due to time constrains, it was not possible to manufacture a PCB to integrate all components. We had to settle on an off-the-shelf box to guard all components.

Screenshot of the CardioTag mobile app capturing live ECG data from the CardioTag device via Bluetooth.

Infograph on the CardioTag system and its components.

Flowchart schematic of the device component details, interfaces and wiring.