Patients in the Emergency Department can have significant waiting times before treatment, particularly at weekends. During this time, patient condition may deteriorate. It is proposed to monitor their heartrate using a two electrode wearable wireless sensor patch mounted on the chest of the patient. The system will be used for early detection monitoring and not medical diagnosis. You are required to design sensor circuitry suitable for the proposed application. Your response should include: A description of the how the sensor transduces the biosignal from the human body, outlining key sensor requirements for the proposed application. A system and component level diagram of the key sensor hardware. A discussion with supporting calculations of the limitations of a two lead ECG over three lead ECG.