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The management of patient’s vital sign - SE@BE

Submission Template for Student Design Competition 2016 Korea

Contact Information

University: Catholic University of Daegu

Team Members (with year of graduation): Kang hyung soon(4th), Shin in tae(4th),

Joo won hyeong(3th), Park min wook(3th)

Email Address: kangsoon7115@naver.com , tlsdlsqk@naver.com , wndnjsgud@naver.com, alsdnr4419@naver.com

Submission Language: English

Project Information

Title: The management of patient’s vital sign

Description: Our idea is to use ECG sensor and temperature sensor. The idea ​​told by our team is that ECG and body temperature of patients are checked in real time. If the patients are in danger or emergency, the buzzer will inform it to the doctors or nurses.

Products: NI myRIO-1900, Hand-Grip Heart Rate Monitor(HGH-BTA), Hand-Grip Heart Rate Monitor(STS-BAT), Vernier myDAQ Adapter(BT-MDAQ), LED, Buzzer(DM03-3V) , LabVIEW 2014

The Challenge:

vital sign contains four checks which are heart rate, respiration, body temperature and blood pressure kinds of basic conditions that maintain life. All patients in the hospital are given vital signs checked. vital sign is usually performed two or three times for a day by the nurses and it is difficult to diagnose the condition of the patient accurately. However, if you can check and record the vital sign in real time then the vital sign is able to diagnose more accurate the condition of the patient than before. Also, when the patient is not checked by the nurse, an emergency situation checked in time can tell immediately.

The Solution:


Our team's device is to recognize measuring the vital sign Hand-Grip Heart Rate Monitor(HGH-BTA) and Hand-Grip Heart Rate Monitor(STS-BAT), Vernier myDAQ Adapter(BT-MDAQ), LED, Buzzer(DM03-3V) and LabVIEW. so, you can check the vital signs of the patient in real time , and can immediately cope with a case of emergency.

  • (1)  Application of Lab View

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Firstly, The heart rate of the patient is measured with a hand grip type heart rate sensor and Body temperature is measured by the temperature sensor surface. Secondly, Accept the measured value as myRIO. Thirdly, It shows the measured values ​​in the LabVIEW program linked with myRIO which switches to the desired value. Fourthly, If the value of the patient's life is in danger, the buzzer sounds and the lights turned on LED.(Connected myRIO)

Finally, Recording the measured values ​​in real-time at regular intervals and stores the condition of the patient as an Excel file.

(2) Hand-Grip Heart Rate Monitor(HGH-BTA)

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The Hand-Grip Heart Rate Monitor measures a person’s heart rate by registering the small electrical signals carried across the surface of a person’s skin each time when his or ger heart contracts. This signal is measured at the surface of the skin by electrodes embedded in the hand grips of the Hand-Grip Heart Rate Monitor.

Specifications

Receiver range : 80 ~ 100 cm

Transmitter transmission frequency : 5kHz±10%

Receiver current consumption : 30~55 µA

Transmitter operation temperature : 0~60 ℃

How the Hand-Grip Heart Rate Monitor Works

The Hand-Grip Heart Rate Monitor consists of a set of hand grips and a plug-in receiver. The hand grips are held, one in each hand, by the individual whose heart rate is being monitored. The hand grips are marked for the right or left hand and each has the necessary markings showing where the individuals’ fingers and palms should be placed. The left hand grip and the receiver are both marked with an alignment arrow. It is important that the arrow labels on each of these devices is in alignment for collecting data.

(3) Surface Temperature Sensor(STS-BAT)

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The Surface Temperature Sensor is designed for use in situations in which low thermal mass or flexibility is required. Special features include an exposed thermistor that results in an extremely rapid response time.

Specifications

Temperature range

25 to 125 (13 to 257 )

Maximum temperature that the sensor can tolerate without damage

150

Temperature sensor

Accuracy

20 NTC Thermistor

±0.2at 0, ±0.5at 100

Response time (time for 90% change in reading)

50 seconds (in still air)

20 seconds (in moving air)

Probe dimensions: Probe length (handle plus body)

  1. 15.5 cm

How the Sensor Works

This probe uses the 20 ㏀ NTC Thermistor. The thermistor is a variable resistor whose resistance decreases nonlinearly with increasing temperature. The best-fit approximation to this nonlinear characteristic is the Steinhart-Hart equation. At 25℃, the resistance is approximately 4.3% per ℃.

T=[{K0+K1(ln1000r)+K2(ln1000r)^3}^-1]-273.15

(T = Temperature , R = resistance in ㏀ )

K0=1.02119X10^-3 , K1=2.22468X10^-4 , K2=1.33342X10^-7

(3) Vernier myDAQ Adapter(BT-MDAQ)

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allows you to connect Vernier sensors to National Instruments' myDAQ interface. The adapter includes two connectors for Vernier analog sensors and one connector for Vernier digital sensors. A screw terminal and header pins provide access to myDAQ lines not used by the connectors. This includes the two analog output lines, three digital lines (including the digital lines with the frequency and pulse width modulation outputs), and +5 volt power.

(4) LED

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Forward Voltage : 1.8 ~ 2.2 V

Dominant Wavelength : 645 ~ 655 nm

Reverse Current : 10 µA

Viewing Angle : 40 deg

Luminous Intensity : 90 mcd

High Temperature Operating : +85 ℃

Low Temperature Operating : -40 ℃

Temperature Cycle : -40 ℃

Resistance To Soldering Heat : 260±5 ℃

(5) Buzzer(DM03-3V)

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Rated Voltage : 12 V

operating Voltage : 9~15 V

Tone : Continuous

Resonant Frequency : 350 ~ 500 Hz

Sound Output at 10cm : Min 85 dB

Current Consumption : Max 28 mA

Operating Temperature : -20 ~ +60 ℃

Storage Temperature : -30 ~ +70 ℃

Weight : 8 g

Housing Material : ABS

(6) NI myRIO

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This module is equipped with 10 analog inputs, 6 analog outputs, 40 digital I/O lines, wireless, LEDs, push button, accelerometer onboard. and Xilinx FPGA and dual-core ARM Cortex-A9 processor, Programmable with LabVIEW or C. It can connect with Hand-Grip Heart Rate Monitor and Surface Temperature Sensor through corded LabVIEW Program which can measure the heart rate and temperature of the patients by received each signals. And then, it informs signal abnormality by LED and Buzzer.

VI Composition

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Conclusion

The unit of the device of our team is that the condition of the patient is informed to the doctor or nurse directly in real-time.

As a Biomedial Engineering Students, we create this devices for patients. It aims that is for a vernier surface temperature sensor and vernier heart rate sensor for measuring a vital sign of the patient.

Medical device which monitors the vital signs of the patient has been developed, but our team has been activating to connect it to the Lab VIEW program.

This device was designed to be used as the target of all patients admitted to the hospital. This device measures the vital sign indicating the status of the patient and the nurse made ​​it know in real time.

Effect of using this device.

  1. If time is not for the check, the condition of the patient let the nurses know directly. Also it may inform the nurses to know the condition of each patient.
  2. It can cope with the rapidly when the patient's condition was deteriorating and It can be avoided that the patient's condition to deteriorate.
Contributors