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Project: Senior Hemochron Analyzer Rajen Patel, Cesar Baena, Karim I nterface to AegisPOC Moussaoui Background Hemochron analyzer is a device that takes a blood sample and returns values for specific fields required in blood testing. The Aegis POC is a data management web service provided by Laboratory Data Systems; hospitals use this to collect and interpret data provided from various blood tests through a database. Goal The goal of this design is to develop communication interface between the Aegis Point of Care service and Hemochron Jr. Signature+ Microcoagulation Analyzer through the use of low level interface development, binary parsing, and inter-device communication. Through software development, access to the device, transmission of data, and the creation of higher level objects to be stored in the Aegis POC were addressed. Start Design Transmission: Interfacing to the analyzer through the use of Send attention I mplementation System Specifications Windows XP Visual Studio 2003, 1.0 .Net framework Language: C# Internet Explorer Established communication via PC Serial Port Serial Connect Telnet Baud Rate: 19200 Developed a state machine for the overall communication process. Parsed the data that was received, following the data outline by the protocol documentation provided by ITC Developed Checksum Algorithm serial port and HC Commands. Interpretation: Parsing the data that is received from the device to a human readable format, See Figure Output: Data Display screen and control Start Wait for ack Send serial # comand Start Process data Send attention Receive a string of bytes of length x Takes data stored in variables and maps them to database Figure 3.. Transmission of Data Figure 4. Interpretation of Data Figure 5. Output of Data Figure 6. Communication process that was handled Requirements 1. Retrieve work blood measurements data record from the Hemochron Analyzer. Received data record must be same as sent. 2. Be able to parse the received data record for blood work data. Convert parsed binary data to human readable format. 3. Be able to display blood work data on a GUI application. 4. Store the blood work date on AegisPOC Record format must be compatible with existing data base. Send command set _date and set_time Parse that string according to protocol docuemnt Records are available in Aegies website Send attention Figure 1. AegisPOC Interface Wait for ack Convert each byte to a character Be able to modify and edit records Problem Lab Data Systems wants to implement a communication interface to the Hemochron analyzer, control will be given to a PC allowing it to collect and display data from the analyzer. Transmission of data via Serial Connection Interpretation of data and Parsing a binary string Output of processed data to Human readable format Send command get record count Figure 5 Hemochron Analyzer Acknowledgments A Special Thanks to: Jared Monaco, Director from Laboratory Data Systems for his helpful guidance, knowledge, and supervision. Serial Connection ` Ethernet Send attention Stores it in specified variable to be later transmitted to the database User Station Wait for ack Figure 4 Start getting patient and quality records Patient and quality records Loops itself until is done Ae ia Ae g Li n kv ia is P g is PO Lin kv OC Hospital Ken Christensen, Director for Senior Project from the University of South Florida, for his guidance and time. Lab Data Systems, for their assistance, time, and knowledge. Figure 2. Hemochron Analyzer Clears record from device and terminates connection Server Figure 6 Figure 3 Department of Computer Science & Engineering C Senior Project CIS 4910 Spring 2007

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