eCardiac - The University of Texas at Arlington
Contents
1. System Requirements Specification Personal ECG Monitor 10 3 User washes shirt 10 3 1 Scenario After extended use user washes shirt 10 3 2 Actor s Patient removes and disposes of electrodes removes eCardiac device removes connecting wires Send to Washer Dryer for cleaning Patient Washer put on reapply new Dryer equiped shirt electrodes to clean shirt insert eCardiac device Cleaned to clean shirt shirt insert wires in clean shirt slots Figure 10 3 User washes shirt 9 08 2012 21 eCardiac System Requirements Specification Personal ECG Monitor 10 4 User downloads the application 10 4 1 Scenario User installs ECG app on to mobile device 10 4 2 Actor s Patient and Patient s mobile phone Step 1 User Selects Application Store Step 2 User Searches for eCardiac clicks on Suggestion for eCardiac Personal ECG Step 3 User Selects eCardiac Software Step 4 User Presses Download Button Step 5 User Presses Install Button Result Program is installed gt ecardi eCardiac FERIE ECG A em em e Do you want to install this gt eCardio Workout eCardiac s Personal ECG is designed with Eesti Personal ECG your heart in mind We have made it especially for you It pairs with your Personal ECG Unit sold exclusively by eCardiac Allow this application to eCardigan Clothing Ne Q Valentine eCards THIS SOFTWARE DOES NOT FUNCTION Your person2. be able to expect in the future 11 2 1 ECG monitoring After speaking with our Australian consultant and through some research into basic ECG products we have found that there is much in the way of pre existing hardware to supply basic ECG monitoring capability and many of these units can already sound an alarm when unhealthy activity is detected so integration into a call out system should be a reasonable goal 11 2 2 Emergency Call out 11 3 After doing research into a well advertised product known as life alert we found that the ability to call out will be a relatively simple one when wiring the ECG device to a life alert like callout device There are also other options that give extensive capability to our call out system by interfacing with a mobile device Technical Analysis This project will have our team utilizing hardware design customer comfort telecommunication and signal analysis The hardware design for this unit will not likely be total construction of the e cardiac unit but rather attaching and connecting different pre existing technologies so they may properly interface The issue with making these connections is two fold the technologies must be compatible and the final combined unit must be unobtrusive to the customer wearing it By customer comfort we mean that the unit and it s mounting material must be comfortable enough and must not interfere with the customer s day to day life This restric
3. 012 16 eCardiac System Requirements Specification Personal ECG Monitor 8 1 8 2 8 3 8 4 8 Other Requirements Portable to Windows 8 1 1 Description The unit must be capable of interface Windows 7 other operating systems are not used by target audience in high enough numbers to merit their use 8 1 2 Source eCardiac 8 1 3 Constraints Cost Effective hardware may not make portable programming feasible 8 1 4 Standards N A 8 1 5 Priority 5 Alert Sound When Callout Occurs 8 2 1 Description The unit will upon deciding to call 911 emit a short audio file informing the user that the unit will be calling out 8 2 2 Source eCardiac 8 2 3 Constraints N A 8 2 4 Standards N A 8 2 5 Priority 3 Able to Cancel Call 8 3 1 Description The user will have access to a method for canceling a call to emergency services in the case of a false alarm 8 3 2 Source eCardiac 8 3 3 Constraints N A 8 3 4 Standards N A 8 3 5 Priority 3 Forced Emergency Call out 8 4 1 Description The unit must have an easily accessible button on the device which will allow the user to initiate a call out themselves 8 4 2 Source eCardiac 8 4 3 Constraints N A 8 4 4 Standards N A 8 4 5 Priority 2 9 08 2012 17 eCardiac System Requirements Specification Personal ECG Monitor 9 Acceptance Criteria As of now since we do not yet have a specific sponsor any acceptance criteria will be those which we will assume to be focu
4. 012 ii eCardiac System Requirements Specification Personal ECG Monitor 4 Packaging FGCU INCI othe hohe eh ee O 9 4 1 Product is battery powered nenen 9 4 2 Electrodes will be detachable and universal 9 4 3 Product will have one primary device casing ssssssssrerressssssrrrrrrnrrsseerrrrnnnnnnneeeerenne 9 4 4 Ready to use processing Ultra li 9 5 Pertormance Requirements ices sent orton a a 11 bol Battery tee 11 52 ele EE IESEL dl add dol 11 53 alas INGIC ALON are A ill 11 5 4 HEEM 11 5 5 Low Battery Wa ts El ts MESE Eds EE Eo 12 5 6 Processing Interval ii 12 6 Safety QUIM o ta ha teenie 13 Gel ee 13 6 2 ein De 13 6 3 ln EE 13 6 4 Moderately Water Resistant i 13 7 Maintenance and Support Requirement 15 7 1 User Manual Provided sanas taaan 15 7 2 A O n 15 7 3 User Removable Batteries will be use 15 7 4 Internally Documented Common RepairS 15 8 Other Requife Mets nn bi 17 8 1 Portable to WINDOWS EE 17 3 2 Alert Sound When Callout Occurs coastal iii 17 83 Ableto Cancel UE 17 9 08 2012 ii eCardiac System Requirements Specification Personal ECG Monitor 8 4 Forced Emergency Te EE 17 9 Acceptance Ci ii 18 9 1 Verify that the unit is unobtrusive nile 18 9 2 Verify that the unit accurately measures heart activity i 18 9 3 Verify that unit when detecting he
5. Specification Personal ECG Monitor 4 4 2 Source eCardiac 4 4 3 Constraints Team eCardiac has limited experiencing packaging hardware components 4 4 4 Standards N A 44 5 Priority 1 9 08 2012 10 eCardiac System Requirements Specification Personal ECG Monitor 5 1 5 2 5 Performance Requirements Battery Life minimum 5 1 1 Description In order to function properly as an emergency alert device the unit must be capable of continuous use of at least 14 hours 5 1 2 Source eCardiac 5 1 3 Constraints Battery size may be an issue as well as number of batteries 5 1 4 Standards N A 5 1 5 Priority 2 Simple Application 5 2 1 Description Whatever the final form may be the user must be capable of putting the unit on in roughly the same amount of time as a standard article of clothing 5 2 2 Source eCardiac 5 2 3 Constraints The material or form of whatever may keep the unit attached to the customer 5 2 4 Standards N A 5 2 5 Priority 2 5 3 Status indicator 5 4 5 3 1 Description The unit will indicate to the user that it is working properly or indicate that an error has occurred and maintenance is needed 5 3 2 Source eCardiac 5 3 3 Constraints It will be up to the user to perform maintenance or take the unit to a technician 5 3 4 Standards N A 5 3 5 Priority 2 Quick Startup 5 4 1 Description The unit must be able to startup and be ready for use within two minutes of the customer s pro
6. System Requirements Specification Personal ECG Monitor Department of Computer Science and Engineering The University of Texas at Arlington eCardiac Project Personal ECG Electrocardiogram Monitor Team Members Michael Flanagan Jose Miranda Marc Streeter Nicholas Skrobe Minh Tran Ve Last Updated 07 30 2012 at 1 46 AM 9 08 2012 i eCardiac System Requirements Specification Personal ECG Monitor Table of Contents TA in tie ii li ile ii List of Figures dicas vi e EE E o date i vii ie Product Conceptie io ses ina dl 1 EN IPURDOSG Gin 1 O o ini E E E zoro saloni 1 12 A T San Daniele tea boat tee 1 2 Product Description and Functional Overview EE 2 2 1 Features and Functions iia 2 2 2 External Inputs and DUI Sa oro E ES DIS 2 2 3 Product Interfaces AA 3 3 CUSTOMERS a nenn 5 SH Unitis nobtrusive IG Usb oia 5 3 2 Normal living environments uninhibited cece eeeeeeeee eee eeeeeeeeeeeeaeeeeeeeeeeeeeeeeeeaaees 5 3 3 Automatic emergency Not CAN ca 5 3 4 Easy product removal from bodY i 5 3 5 Easy shirt cleaning See assores air 6 3 67 TEIGMIWGIGN siias aia 6 Ge WEE 6 3 8 Intermittent heaftreadigs sascracarasesisana da deed toa ele palati 6 3 8 Limited heart readings stored on device 7 3 9 A e 7 3 10 ECG EE EE aa 7 alld EE 7 912 Simple User Interface marni a is 8 3 13 The user must have a modern mobile device to use with the processing unit 8 9 08 2
7. al information WITHOUT THE eCARDIAC PERSONAL d work ECG UNIT Card Icon Wallpapers LL wie rt u s y Ere RZ mi sid CBOE RI Ashley Your location Network communication zxcvbnme aceloker25000 toto na IS l Install i Cancel Step1 Step 2 Step 3 Step4 Step 5 Step 6 Figure 10 4 User downloads application 9 08 2012 22 eCardiac System Requirements Specification Personal ECG Monitor 11 Feasibility Assessment Scope Analysis Currently based on our skills research and interaction with other teams who have completed similar project we can safely say that we are capable of both creating a working prototype as well as doing so within our allotted two semester period Creating this portable ECG emergency notification unit seems to be well within our capabilities as a five man team in a roughly seven month period The integration of the various sub units into a single whole may be difficult but we are certain that our resources as students of UTA will be able to aide us through that issue As a whole we feel that the main requirements which demand our primary attention are 3 1 3 2 3 3 and 3 8 Research Through some research we have been able to locate several projects and pre existing units which share many factors with the eCardiac unit In fact we were able to Marc Handmer who has completed a very similar venture by himself and has been volunteering information about his project and what we may
8. art attack will contact 911 or similar service 9 3 1 Ue H 19 10 1 JE O EE 19 10 2 Monitor heart activity and display heart problems 19 10 3 User En e 21 10 4 User downloads the application eerste 22 11 Feasibiliy Assessmenb sat rn Sal aa ial A ita lai un Lal Lala pia bd 23 11 1 Scope EISE ie ege e i eteeg lla eege gege ee e ee 23 A O 23 11 2 1 ECG monitoring Eu ooo oia 23 11 2 2 Emergency Call OU ruse eee ic es Pe esate dd See te eA A Ca RE tote 23 Tis Klee EN WE 23 Whe e EE 24 11 5 RESOURCES AOS Soano aaa 24 11 6 Schedule Analysis ee tere ee 24 9 08 2012 iv eCardiac System Requirements Specification Revision Number Revision Date o 1 2 1 0 2 2 0 2 3 3 3 1 0 3 2 _ 0 2 1 9 08 2012 7 16 2012 7 17 2012 7 17 2012 7 25 2012 7 30 2012 8 4 2012 8 8 2012 8 10 2012 9 8 2012 Personal ECG Monitor Document Revision History Description Rough Draft Rough Draft Update Rough Draft Update Rough Draft Update Gate Review First Revision After Gate Review Second Revision After Gate Final Revision Update Rationale Compile all subsections Internal Review Requirement Scrubbing Requirements Adjustments Final revision before gate review Includes adjustments from feedback Gate review feedback and merging and gate review feedback Updated based on additional feedback Format Corrections Changed Communications Requiremen
9. ases of the eCardiac device 10 1 User device set up 10 1 1 Scenario Device is put on properly and turned on 10 1 2 Actor s High risk patient Patient s Body User puts on eCardiac shirt User places electrodes in shirt s designated slots User H SSC SE Connects electrodes into holster to controller High Risk Patient Secures Holster and Wires to shirt User turns eCardiac on eCardiac connects with User turns on Mobile mobile device Application eCardiac is setup and ready to call Figure 10 1 User Device Set Up 10 2 Monitor heart activity and display heart problems 10 2 1 Scenario ECG detects heart activity and displays status on phone with an option for the user to cancel a call to 911 in the event of a problem detected 10 2 2 Actor s Patient Electrode 1 Electrode 2 Electrode N Central Controller Notification Device Emergency Call Center Patient s mobile phone 9 08 2012 19 eCardiac System Requirements Specification Personal ECG Monitor Heart Attack or Symptoms Observed Body Signals Emitted Patient s eCardiac Personal Body ECG Device Figure 10 2A Monitoring Heart Activity Stage 1 Stage 2 Stage 3 Stage 4 Status Problem Detected Status Problem Detected Status Normal Status Problem Detected Waiting for answer 911 is on the phone ECG Battery 95 ECG Battery 95 ECG Battery 95 ECG Battery 95 Figure 10 2B Mobile System Interface 9 08 2012 20 eCardiac
10. be notified without user interaction 3 3 2 Source Product Manager 3 3 3 Constraints Emergency detection away from home limits timely symptom reporting 3 3 4 Standards N A 3 3 5 Priority 2 Easy product removal from body 3 4 1 Description Shirt and device will be quickly and easily removable 3 4 2 Source eCardiac 9 08 2012 5 eCardiac System Requirements Specification Personal ECG Monitor 3 5 3 6 3 7 3 8 3 4 3 Constraints The user must possess the ability required to take off a typical t shirt 3 4 4 Standards N A 3 4 5 Priority 3 Easy shirt cleaning 3 5 1 Description Shirt must be separately machine washable to promote regular use 3 5 2 Source eCardiac 3 5 3 Constraints Shirt color and size may change gradually after repeated washing 3 5 4 Standards N A 3 5 5 Priority 3 Lightweight 3 6 1 Description Device is to be worn all day so it must be light weight 3 6 2 Source eCardiac 3 6 3 Constraints Technology allows for wireless technology and lightweight materials However due to budget and time constraints we cannot fully explore every option 3 6 4 Standards N A 3 6 5 Priority 5 Language 3 7 1 Description All documentation communication relayed by device will be in English 3 7 2 Source eCardiac 3 7 3 Constraints N A 3 7 4 Standards N A 3 7 5 Priority 2 Intermittent heart readings 3 8 1 Description Device will take heart readings periodically 3 8 2 Source e Cardiac a
11. d initial set up 7 1 User Manual Provided 7 1 1 Description Upon delivery of final product the eCardiac team will provide each user with a general user manual that establishes correct use and self maintenance 7 1 2 Source eCardiac 7 1 3 Constraints Manual will be in English only Manual will only include user sanctioned modifications 7 1 4 Standards N A 7 1 5 Priority 3 7 2 Machine Washable Cloth 7 2 1 Description Machine washable cloth will be used in fabricating the shirt 7 2 2 Source eCardiac 7 2 3 Constraints Shirt will be available in only one elastic size Shirt may fade over time 7 2 4 Standards N A 7 2 5 Priority 2 7 3 User Removable Batteries will be used 7 3 1 Description User removable batteries will be used to enable users and administrators the ability to change batteries at their leisure 7 3 2 Source eCardiac 7 3 3 Constraints Batteries are replaced at the user s expense 7 3 4 Standards N A 7 3 5 Priority 2 7 4 Internally Documented Common Repairs 7 4 1 Description As common repairs are encountered internal documentation will establish their easy repair and when possible users and administrators will be notified of possible avoidance strategies 7 4 2 Source eCardiac 9 08 2012 15 eCardiac System Requirements Specification Personal ECG Monitor 7 4 3 Constraints Internal documentation will only be available to Team eCardiac 7 4 4 Standards N A 74 5 Priority 2 9 08 2
12. e packaging requirements for the Personal ECG Monitor 4 1 4 2 4 3 4 4 Product is battery powered 4 1 1 Description The energy source for the device will be removable batteries They will be packaged separately and must be installed by the user 4 1 2 Source eCardiac 4 1 3 Constraints It is up to the customer to change these batteries as often as necessary 4 1 4 Standards N A 4 1 5 Priority 1 Electrodes will be detachable and universal 4 2 1 Description Electrodes will be packaged separately and attached by the user Electrodes are subject to wear and tear Our unit must allow for the user to replace the electrodes as needed Electrodes must also be removed when the garment needs to be washed 4 2 2 Source eCardiac 4 2 3 Constraints It will be up to the customer to determine when the electrodes need changing 4 2 4 Standards eCardiac 4 2 5 Priority 1 Product will have one primary device casing 4 3 1 Description The product s ECG processing shall be contained within a single case of plastic or similar material 4 3 2 Source eCardiac 4 3 2 Constraints The user will need enough technical sense to connect a plug and play device 4 3 4 Standards N A 4 3 5 Priority 1 Ready to use processing unit 4 4 1 Description Processing unit will be enclosed with no exposed wiring or hardware The software required for processing will be preloaded and functional 9 08 2012 9 eCardiac System Requirements
13. e in how to reduce the size of the unit 3 11 4 Standards N A 3 11 5 Priority 3 9 08 2012 7 eCardiac System Requirements Specification Personal ECG Monitor 3 12 3 13 Simple User Interface 3 12 1 Description Due to the very real possibility of the user having little technical ability or knowledge e g this will likely be targeted at the elderly and most people over 70 seem to have some trouble adapting to new technologies the basic user interfaces of start up sampling or forced emergency call out should be easy enough to understand with five minute of instruction 3 12 2 Source Team Cardiac 3 12 3 Constraints N A 3 12 4 Standards N A 3 12 5 Priority 2 The user must have a modern mobile device to use with the processing unit 3 13 1 Description The mobile device provided by the user will handle all communication needs to emergency services 3 13 2 Source Team Cardiac 3 13 3 Constraints The device needs to have access to the internet to obtain the necessary software The mobile device must have wireless connectivity to interface with the processing unit 3 13 4 Standards N A 3 13 5 Priority 5 9 08 2012 8 eCardiac System Requirements Specification Personal ECG Monitor 4 Packaging Requirements In the professional fast paced world that we work in it is necessary to provide our product with a slick professional look We must insure that the product is easily assembled and ready for use Below are th
14. eCardiac System Requirements Specification Personal ECG Monitor 3 8 24 4 0 0 5 10 50 7 3 21 3 0 0 4 5 20 6 15 60 7 0 0 10 10 20 15 5 30 5 0 7 4 28 10 10 100 24 238 316 578 Table 11 1 Function Point Estimate ta Communications E Distributed data processing ST rename E S ani used configuration 7 Iomsbn DS Gries a besten 7 Gee pate E a rs E S e E Operational ese a Maltes E mT ps ae eo Value diusted Fato 03 r_ e i neit mea on Toten DEE a a Table 11 2 Jones First Order Estimate ALI 9 08 2012 25 eCardiac System Requirements Specification Personal ECG Monitor a PEAD Programmer Abiy e VEN Virtual Machine Experience 80 A NE me roue Sek AS Mont Table 11 3 COCOMO 9 08 2012 26 eCardiac
15. ging cost 6 1 4 Standards No shock may be allowed from either the main unit or through the ECG leads 6 1 5 Priority 1 Non Abrasive 6 2 1 Description Due to the unit being in constant physical contact with the customer the unit should be as smooth and as comfortable as possible to avoid chafing scratching or cutting 6 2 2 Source eCardiac 6 2 3 Constraints Lack of constructive knowledge in group to create outer shell thus any in house fabricated unit may not be as smooth as necessary 6 2 4 Standards N A 6 2 5 Priority 1 Non Constrictive 6 3 1 Description The means to attach the unit to the customer must not impose a obvious choking or strangulation hazard 6 3 2 Source eCardiac 6 3 3 Constraints Properly sizing each unit to each customer may be problematic 6 3 4 Standards N A 6 3 5 Priority 2 Moderately Water Resistant 6 4 1 Description The unit must be not cease to function if small to moderate amounts of water are spilled on the casing 6 4 2 Source eCardiac 9 08 2012 13 eCardiac System Requirements Specification Personal ECG Monitor 6 4 3 Constraints N A 6 4 4 Standards N A 6 4 5 Priority 3 9 08 2012 14 eCardiac System Requirements Specification Personal ECG Monitor 7 Maintenance and Support Requirements This section establishes in detail the maintenance requirements for users administrators and the eCardiac support team Maintenance may include repair upgrade modification an
16. lds the eCardiac processing unit and notification device The electrode wires that connect the electrodes to the processing unit are concealed by the shirt The processing unit then communicates wirelessly the status of the patient as perceived by eCardiac 2 2 External Inputs and Outputs The initial step in heart monitoring is data acquisition from the user Accurate data requires that the user be constantly connected with up to ten electrodes Each electrode s specific placement ensures an accurate picture of internal cardiac activity Specific placement of each electrode is established by a garment worn under the patient s normal clothing Placed properly these electrodes are able to gather information necessary for signal interpretation The next step in heart monitoring is handed to the central controlling device where data interpretation occurs After receiving input from the electrodes the data is run through filters that will transform what could be viewed as noise into a waveform signal that represents the familiar heart beat many are familiar with viewing in hospital rooms worldwide This filtered signal is then monitored for specific patterns that are indicative of heart attacks symptoms In the last step a heart attack or symptoms that would indicate its onset are sensed and the controller sends as output the necessary information to eCardiac s notification component The notification component has been preprogrammed with emergency
17. lly since our software requirements should be relatively minimal but like any senior design project we have some issues The prime issue we face will be the integration of hardware and software this is because none of our members have class or work experience in this integration because of this we need to have contact with our TA s and possibly our eventual sponsor to ensure we do not have problems or at the very least minimize our chances of having problems Most of the other needs in this project should be easily addressed by the experience of the members We have two members who have had experience with signal analysis in the past and we have at least one member who has extensive electrical skills for the integration of separate units into a single whole Schedule Analysis After updating the SRS aver our gate review we ve found that both COCOMO and Jones First Order Estimations come to a very similar number of man months about 3 5 at minimum with it more than likely being closer to 4 5 for our group as it is it seems quite clear that we should be capable of completing our project within the allotted time Now this calculation is based on the most barebones approach to our unit after additional updates from our gate review We will be closely following the upcoming weeks of the architecture portion of our project to see if there are errors in this schedule based on incorrect information and adjust ourselves accordingly 9 08 2012 24
18. mpting 5 4 2 Source eCardiac 5 4 3 Constraints The startup process for the ECG hardware may take longer than two minutes 9 08 2012 11 eCardiac System Requirements Specification Personal ECG Monitor 5 5 5 6 5 44 Standards N A 5 4 5 Priority 2 Low Battery Warning 5 5 1 Description The unit must indicate whether there is sufficient battery power available to function This will be accomplished by a series of four lights four indicating full power and one indicating low battery 5 5 2 Source eCardiac 5 5 3 Constraints The user will ultimately be responsible for changing the batteries after the indicator light turns on 5 5 4 Standards N A 5 5 5 Priority 2 Processing Interval 5 5 1 Description The total processing time from the gathering of user input to the call out to 911 must take less than 30 seconds In order for the unit to be effective 1t must process the information and call out in as little time as possible 5 5 2 Source eCardiac and medical standards 5 5 3 Constraints Limited hardware and software integration experience by team 5 5 4 Standards N A 5 5 5 Priority 1 9 08 2012 12 eCardiac System Requirements Specification Personal ECG Monitor 6 1 6 2 6 3 6 4 6 Safety Requirements Electrically Safe 6 1 1 Description Due to the electronics being operated so close to the customer the unit must not in any way harm the customer 6 1 2 Source eCardiac 6 1 3 Constraints Packa
19. nd battery constraints 3 8 3 Constraints Continuous ECG quickly drains batteries 3 8 4 Standards N A 3 8 5 Priority 1 9 08 2012 6 eCardiac System Requirements Specification Personal ECG Monitor 3 8 3 9 3 10 3 11 Limited heart readings stored on device 3 8 1 Description Device will store only a limited interval of heart readings 3 8 2 Source eCardiac and storage constraints 3 8 3 Constraints The amount we can store will vary depending on device 3 8 4 Standards N A 3 8 5 Priority 4 Elastic shirt fabric 3 9 1 Description In order to insure an accurate reading the shirt must be made of elastic material The elasticity will insure that the shirt is tight and will improve ECG Readings 3 9 2 Source eCardiac 3 9 3 Constraints N A 3 9 4 Standards N A 3 9 5 Priority 5 Product color 3 10 1 Description Shirt controller and device container will be black 3 10 2 Source eCardiac 3 10 3 Constraints N A 3 10 4 Standards N A 3 10 5 Priority 5 Unit Size 3 11 1 Description The unit attached to the mounting shirt must be relatively small and light to allow the target audience to live without the unit making major impact on their movement The size should be no larger than thirty six cubic inches not including the leads or mounting shirt 3 11 2 Source Team Cardiac 3 11 3 Constraints Being able to place all the required hardware in the limited space may be difficult without extensive knowledg
20. ntended to replace or alleviate the need for on premises personnel This product is ideal for stay at home or assisted living patients The ideal patient is in need of constant monitoring and has limited mobility Garment Electrodes Communications gt Device ECG Product Concept Figure 1 1 9 08 2012 1 eCardiac System Requirements Specification Personal ECG Monitor 2 Product Description and Functional Overview Herein is provided a general description of the eCardiac system The description is composed of its primary function key inputs outputs and intended use 2 1 Features and Functions The eCardiac s central purpose is to give high risk heart attack patients added mobility and peace of mind by accurately monitoring the heart in an unobtrusive manner while outside the hospital environment When observed heart activity is symptomatic of a heart attack the eCardiac s critical function turns to contacting emergency operators in order to allow them the ability to probe the user for more information needed in deciding when critical care is necessary Key limitations of the device include participating in moderate to extreme activities such as sports or light jogging Leaving their designated home environment also limits the device s ability to ensure communication with emergency care when needed The whole of the device consists of a form fitting shirt with slots for each electrode and a holster for the container that ho
21. response procedures to use when notification is necessary Response procedures include contacting a remote response emergency center and storing relevant data such as heart rhythms on the device for later retrieval by qualified personnel 9 08 2012 2 eCardiac System Requirements Specification Personal ECG Monitor Body Voltage at particular measuring Placed Electrode point Electrodes Raw voltage difference Analog unfiltered transmission Controller readings from the host of readings body Controller Analog unfiltered Filtered digital waveform Controller transmission Controller Filtered Digital Probability measurement of Controller waveform possible heart attack symptoms sensed and input is stored locally Controller Probability measurement alert and relevant information Notification of possible heart attack Device Notification alert and relevant contact emergency response with Emergency Device information data Response Center Emergency contact emergency decision for critical care User Local Response Center response data emergency authorities Table 2 1 External Inputs and Outputs 23 Product Interfaces Below are included sample mockups of what operational interfaces will be available to the end user and administrators 9 08 2012 3 eCardiac System Requirements Specification Personal ECG Monitor al Electrodes Handles Holster flap er Personal ECG Monitor inside holster N laste sire Elastieshi
22. sed on by the customer Since this is a medical alert device the acceptance criteria will be focusing on overall safety basic use and the alert mechanism 9 1 9 2 9 3 9 08 2012 18 Verify that the unit is unobtrusive 9 1 1 Requirement addressed 3 1 Unit is unobtrusive to user 9 1 2 Verification Procedure The customer will wear the unit and proceed through a series movement to ascertain ease of movement and comfort while wearing the unit Verify that the unit accurately measures heart activity 9 2 1 Requirement addressed 2 1 Features and Functions 9 2 2 Verification Procedure After measuring heart activity with a trusted ECG unit on a specific person that same person will be measured by the eCardiac unit and after comparing the measurements of the two units the accuracy of eCardiac can be measured Verify that unit when detecting heart attack will contact 911 or similar service 9 3 1 Requirement addressed 2 1 Features and Functions 9 3 2 Verification Procedure If a sufficient risk of heart attack is sensed then the unit must initiate the call procedure through the user s provided mobile device for testing purposes a number other than 911 will be utilized After the call is successfully made the unit can be accepted based on this criterion eCardiac System Requirements Specification Personal ECG Monitor 10 Use Cases This section establishes the workflows associated with each of the different relevant use c
23. t Controller Holster Wire connections Figure 2 1 Wearable ECG Shirt 9 08 2012 4 eCardiac System Requirements Specification Personal ECG Monitor 3 Customer Requirements This section establishes in detail customer requirements for each component of eCardiac Any changes to this section will require the agreement of all stakeholders 3 1 3 2 3 3 3 4 Unit is unobtrusive to user 3 1 1 Description The device must be used unfettered to any stationary machinery to allow walking sitting turning bending over lifting stretching laying down and laying face up 3 1 2 Source hardware fragility 3 1 3 Constraints Moderate to extreme activities may prevent the device from working properly if electrodes are dislodged 3 1 4 Standards N A 3 1 5 Priority 5 Normal living environments uninhibited 3 2 1 Description Homes assisted living facilities and other dry indoor spaces are all accessible 3 2 2 Source ECG environmental limitations and hardware fragility 3 2 3 Constraints Environments that do not prevent excessive moisture encourage moderate climate and are inundated with electronic interference may cause the device to malfunction Bathing while wearing device for example is not permitted and certain electronics like fluorescent lamps can cause interference with ECG readings 3 2 4 Standards N A 3 2 5 Priority 1 Automatic emergency notification 3 3 1 Description Emergency facilities will
24. ts eCardiac System Requirements Specification Personal ECG Monitor List of Figures Figure Title Page 1 1 Product Concept 1 2 1 Wearable ECG Shirt 4 10 1 Use Case User Device Setup 19 10 2A Use Case Monitoring Heart Activity 20 10 2B Use Case Mobile System Interface 20 10 3 Use Case Washing Shirt 21 9 08 2012 vi eCardiac System Requirements Specification Personal ECG Monitor List of Tables Figure Title Page 2 1 External Inputs and Outputs 3 11 1 Function Point Estimate 20 11 2 Jones First Order Estimate 20 11 3 COCOMO 21 9 08 2012 vii eCardiac System Requirements Specification Personal ECG Monitor 1 Product Concept This section describes the overall concept of the Personal ECG Monitor by giving a brief and concise description of the purpose audience and proper use 1 1 Purpose and Use The Personal ECG Monitor is to be worn by a client and will regularly take ECG readings The product will monitor readings and make note of noticeable changes If these changes indicate that the patient is experiencing heart attack like symptoms it will contact emergency personnel The product should be worn daily The product should be used in a controlled environment where activity is regular and stable The product should not be used while participating in strenuous activities 1 2 Intended Audience Our product is intended to offer effective constant monitoring for high risk heart attack patients The product is i
25. ts our construction 9 08 2012 23 eCardiac System Requirements Specification Personal ECG Monitor somewhat being that we must take care not to have the unit take away from the customer s experience The telecommunication aspect of this project though rather simple when said aloud may pose problems down the road since none of the current people on this team have extensive knowledge of telecommunication technologies We may be able to circumvent that issue somewhat by utilizing a pre existing telecommunication device for our call out functionality In order to conduct proper ECG use we will need to be able to create proper algorithms to analyze the signals coming from the leads of the unit otherwise no accurate data will be found Cost Analysis Overall we should be capable of making it within our 800 dollar budget we feel this is the case because right now we could somewhat easily jury rig a simple version of our final unit with a basic ECG which ranged from 100 300 dollars or make our own for less than 100 some under armor for mounting with negligible cost and an emergency call out device for around 150 dollars overall a properly created device will likely put us between 600 700 dollars depending on the hardware we decide to go with Resource Analysis Our Team consists of two Computer Engineers and three Computer Scientists With this mix we should be able to complete our project in a timely and efficient manner especia
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