Zac ChildersAnastasia Pavlovic

Sam RomanoJeff Spangler

Clayton Winner

Originated from conventional audio monitoring systems

Increased in popularity because of infant fatalities (due to SIDS, etc.)

Has evolved into products which are residentially available, such as the Angelcare Monitor manufactured by Graco.

To design a vital signs monitoring system for infants for use in a residential setting.

The system will be pertinent to new and experienced parents, and available within a reasonable and moderate price range.

The system will monitor three vital signs:

Pulse Respiration Temperature

The monitoring system will be encased in a waterproof garment which will be worn by the infant.

The system will sound an alarm if any abnormalities are detected during use.

Marketing Requirement

Number Marketing Requirement Description

1 The system will be designed for use in residential applications

2 The garment will be simple for the user to put on/take off child.

3The garment will be comfortable enough to permit it to be worn

daily/nightly by the infant.

4 The system will gather accurate readings when in use.

5False alarms should be minimized by correct thresholding and

decision-level fusion.

6The garment will be safe with precautions taken to provide protective

layers for the hardware.

7 The system should operate using wireless technology.

8A range of approximately 150 feet or more should be guaranteed for

monitor function.

9The system should store data from approximately the past 48 hours of

use.

10The system must incorporate both visual and auditory alarm systems

within the monitor unit.

11The alarm must be signaled if pre-defined hazardous vital conditions

are reached.

12The system should be constructed entirely at a reasonable childcare

expense for the user (under 500 dollars).

13The system should allow for certain vital parameters to be changed to

suit specific cases.

Engineering Requirement

Number Engineering Requirement Specification

1

There will be no resources (electronic or otherwise) necessary for the operation of the system which cannot be found in the average

household environment.

2

The wiring of the system will be neat and compact. The user must be able to quickly and safely remove the hardware by following a

short series of directions.

3The garment will be padded but also pliable in order to provide

comfort as well as accurate sensor placement.

4

The sensors and component devices will be chosen according to the range of each parameter being measured in order to gather

accurate readings when in use.

5Software will be thorough when analyzing and thresholding data to

prevent false alarms.

6Protective layers will be designed for the garment to prevent safety

hazards such as electric shock and strangulation.

7Wireless communication technology will be chosen for an appropriate range in a residential setting (Appx. 100 feet).

8The memory in the system will be capable of storing approximately

the last 48 hours of recorded data.

9The monitor component of the system will encorporate a series of

lights and a speaker to provide audio-visual alarm features.

10

The software will implement a system of thresholds as well as decision-level fusion to ensure that an alarm is signaled when the

parameters indicate a problem.

11

The hardware, software and garment components of the system will be constructed using cost-effective materials (goal total cost

under $500).

12

The software will allow the user to alter range information for each of the parameters in order to perform more accurately in specific

situations.

The architecture of this system will consist of two major components which will interact wirelessly to transmit data and commands from the child to the user.

I. Garment i. Garment Functions and Descriptionsii. Garment Architecture

II. Personal Computeri. Computer Functions and Descriptionsii. Computer Architecture

III. Complete System Architecture

I. i. Garment Functions and Descriptions

• Houses the sensor hardware and wireless transmitter/reciever which are interfaced with a microcontroller.

• Probes from each of the sensors will collect and input data to the system while the child is wearing the garment. Sensor data inputs produce very small, noisy,

analog signals. Must be filtered, digitalized, and amplified to become a

readable signal, able to be interfaced with a microcontroller. Low-Pass Filters Analog to Digital Converters

• Software loaded onto the microcontroller and commands from the user tells the system when to collect data and when to output data through the wireless transmitter.

I. ii. Garment Architecture

This diagram illustrates how the hardware/software of the garment interacts with the child to collect the vital-sign information, convert the noisy analog signals to clean digital signals, and send the converted signals to the user.

II. i. Personal Computer

• The user’s personal computer will interface with a wireless transmitter/receiver. Receive vital-sign information Send commands to the garment

• Software will be loaded onto the computer. Validate user credentials when logging in Accept user input to set threshold values for alarms Store recorded data onto hard drive Accept and execute user commands

• The system will utilize the computer display. Vital-sign readings View-stored data Error messages Alarm Emergency contact Information

II. ii. Computer Architecture

III. Complete System Architecture

This diagram illustrates the complete system architecture; showing both the garment and computer components of the system and how they will interact with each other.

SYSTEM ON

IDLETERMINAL OFF

DATA STORE ALARM DISPLAY

TEMPERATURE SENSING

PULSE SENSING

RESPIRATION/MOVEMENT

SENSING

Ta

kin

g R

ea

din

gs

Why is testing important?

• Verify engineering requirements• Minimize costs• Find the boundaries of the system• Ensure system operates smoothly at these

boundaries• Provide means of recovery when system

does not operate smoothly

Black Box• No knowledge of internal workings• Change inputs, monitor outputs

White Box• Target specific internal system nodes• Controllability, Observability

Acceptance Testing• Conditions under which customer accepts the

system

Examines specific use cases the user will encounter with the software.

Provides means of handling errors.

Shines light on areas in which system does not operate as expected

Create an effective and efficient infant monitoring system

Help combat premature death in infants

Minimize production costs

Each member is given specific tasks specified toward their skills

Each task is intended to be completed within a specified timeline

Multiple tasks will be performed at the same time to ensure project completion

At the conclusion of the project, it will be presented and demonstrated

ID Activity Description Members Resources

1 Circuit WiringPutting together the required

circuitsJS, ZC, AP

Sensors, Wire, Circuitry tools, Microcontroller,

A/D converter

2Integrating

MicrocontrollerImplementing microcontroller

for use with the circuitSR

Microcontroller (BASIC Stamp 2ps),

wires

3 Write FunctionsCoding functions outlined in

the proposalCW MATLAB, C, BASIC

4Enable Wireless

Function HardwareImplementing wireless

transmitterJS, ZC, AP, SR

Wireless transmitters and receivers

5Develop Other Software

Needs

Completing other software functionalities based on

proposalCW MATLAB, C, BASIC

6 Set Up NetworkSetting up network for wireless transmission

JS, ZC, AP, SRWireless transmitters

and receivers

7Interface Hardware and

Software

Using functions to make hardware and software as one

unit.

JS, ZC, AP, SR, CW

All circuitry, Microcontroller,

wireless transmitter and receiver, computer

8 Construct GarmentBuild garment in order to contain hardware design

AP, JSWaterproof material,

waterproof thread

9Enable External Mass

StorageSet up unit for backing up

dataJS, ZC Extended hard drive

10 User ManualCreate a user manual for the

finished projectJS, ZC, AP, SR,

CWN/A

11 DocumentationDocumenting all steps of the

projectJS, ZC, AP, SR,

CWN/A

12 Design FairPresentation of completed

projectJS, ZC, AP, SR,

CWFinished project and

documentation

Task # Task Title Division W 1 W 2 W 3 W 4 W 5 W 6 W 7 W 8 W 9 W 10 W 11 W 12 W 13 W 14 W 15

    AP ZC SR JS CW                              

1 Circuit Wiring 20 20   20   20 20 20                        

2Integrating Microcontroller     20       10 10                        

3 Write Functions     10   30 20 10 10                        

4

Enable Wireless Function Hardware 10 15 10 10         10 15 10 10                

5Develop Other Software Needs         20       10 10                    

6 Set Up Network 2 2 2 2             4 4                

7

Interface Hardware and Software 20 20 20 20 20               25 25 25 25        

8Construct Garment 10     5           10 5                  

9Enable External Mass Storage   3   3                     6          

10 User Guide 7 7 7 7 7                       35      

11 Documentation 9 9 9 9 5                       10 20 11  

12 Design Fair 4 4 4 4 4                             20

 INDIVIDUAL TOTALS 82 80 82 80 86 40 40 40 20 35 19 14 25 25 31 25 45 20 11 20

                                           

                                      Total Hours: 410

• The table below shows the required hardware needed to build this system, the part number, the price, and also the source from where we will be purchasing these items.

The Infant Vitals Monitor will alarm parents/users of the system if a child’s vital signs reach potentially hazardous conditions.

The system will use the accurate mid-range priced sensors, and will operate using wireless technology.

The IVM prototype will be constructed for under $1000.