Centralized environment and battery monitoring system for server

CENTRALIZED ENVIRONMENT AND BATTERY MONITORING SYSTEM FOR

SERVER ROOMS

CENTRALIZED ENVIRONMENT AND BATTERY MONITORING SYSTEM

FOR SERVER ROOMS

IEEE-Transportation & Electrification Conference

Paper ID: 1569950721Chair: Prof. Srdjan Lukic

Presented By : Aazim Rasool(阿茲姆)

Centralized Environment and Battery Monitoring System For Server Rooms

Essentiality:

Monitoring is always important for running system

Environment condition can have very bad impact on a system.

50-100 billion dollar loss (research showed/year)

Data center face downtime [2]

23% ---- 5 times in a year

61% ---- 1-4 times in a year

16% ---- Don’t face downtime


Introduction:The system is capable of monitoring

TemperatureHumiditySmokeWater LeakageBattery StatusBattery life.

Used 6 volt lead acid battery (or any other).Capable to store data of 5 seconds duration day wise.Graphical User Interface (GUI) is used to display the data

In tabularGraphical form

PIC controller used for data acquisition from sensors

TEMP (Temperature)

HUM (Humidity)

SMK (Smoke)

W.L (Water Leakage)

B.S (Battery Status)

B.L (Battery life)

Model Of System

Fig. 1. Block Diagram of Monitoring System [4]

MODEL SCHEMATICS OF SYSTEM:

Working

SensorsPIC

ControllerRF

Transmitter

RF Receiver

GUI Display

Data Store

PIC 16F877a

PIC Controller

SPI

SPI

RS-232

Schematic Diagram

Fig. 2. Schematic Diagram of System

Output string of receiver can also read with help of Herculessoftware by interface hardware with computer shown in Fig- 3.

Output String Of Receiver

Fig. 3. Output string of Receiver in Hercules Software

MODEL IMPLEMENTATION OF SYSTEM:

The online inputs parameters are obtainedthrough sensors, fitted in the system and the dataare fed to microcontroller through analog todigital converter (8 bit data).

Following parts of CEBMS for server room.A. Parameter of Sensor Circuit Unit,

B. Transmitter Module

C. Receiver Module,

D. Graphical User Interface (GUI).


1. Room Temperature:

Electronic equipment age is decreased when itgets hot, Cooler environment is always betterand friendly to electronic equipment.

Used LM35 temperature sensor.

For calculation we use formula;

T= ((ADC value)/512)*150)“T” is in degree centigrade.

A. PARAMETER SENSOR

2. Humidity:

Humidity is monitored by humidity sensorHS1101

Capacitive type sensor

Able to operate from 0% to 100% relativehumidity.

Conditions should be maintained such thatcondensation does not happen.

A. PARAMETER SENSOR

A. PARAMETER SENSOR

3. Smoke Sensor:

Sensors detect the smoke and generate alarm.

Smoke detector module LM393 MQ2 is usedfor smoke detection.

The analog output voltage is 0-5V, the higher isthe concentration, the higher is voltage.

4. Water Sensor:

Water sensors detect the water in the serverroom and generate alarm.

Sensors consist of two wires; one is connectedwith microcontroller digital pin and other wireterminal places some near distance andconnected with positive 5 volt.

A. PARAMETER SENSOR

5. Battery Status Indicator (BSI):

BSI indicates that thebattery is connectedwith load or not andpercentage of chargingof 6 volt battery used incontroller.

A. PARAMETER SENSOR

Charge Percentage (%) Voltage (Volt)

100 6.37

90 6.31

80 6.25

70 6.19

60 6.12

50 6.05

40 5.98

30 5.91

20 5.83

10 5.75

TABLE IPercentage of charges according to voltage

6. Battery Life Monitor We estimate the expected life of the battery (in 100 %,

75%, 50%, 25% ) by finding the different parameters ofbattery by measuring [5][9][10]. Battery terminal voltage (open circuit and closed circuit), Current drawn Internal resistance (when battery is fully charged)

Estimate by Internal Resistance using equation [9].Voc =Vst + I*r

“Voc” is the open circuit voltage or terminal voltage. “Vst” is the voltage when switch is closed. “r” is the internal resistance of battery. “I” is the current across the series load resistance RL = 100 ohms when switch closed.

A. PARAMETER SENSOR

TRANSMITTER :

Transmitter collects the data of differentparameters of server room from sensor unit andmakes a monitor network packet in CCS compilerusing SPI master communication of one byte intransmitter controller (PIC 16F877a).

Then transmit through wire and other RFtransmitter module (315-MHz). SchematicProteus simulation diagram of transmitter isshown in Fig-5.

B. Transmitter

B. Transmitter

Transmitter Module (315-MHz)

Fig. 5. Schematic Diagram of Transmitter

RECEIVER:

Receiver connects with the wire and RF receivermodule.

Receiving module (315-MHz) collects a datapacket and sends to the receiver controller (PIC16F877a).

Controllers first de-packetize a packet and thenmake a string of parameter and drive to thecomputer through PC port (RS232). SchematicDiagram of Receiver is shown in Fig-8.

C. Receiver

C. Receiver

Fig. 8. Schematic Diagram of Receiver

Receiver Module (315-MHz)

GRAPHICAL USER INTERFACE:

A graphical user interface (GUI) is a human-computer interface.

Designed GUI in Visual C-sharp, which displaythe parameters

It generates the graph in real time by clickingon stored data (Fig. 10) and graph of wholeday would be display as appeared in Fig. 9.

D. GRAPHICAL USER INTERFACE

D. GRAPHICAL USER INTERFACE

Fig. 9. Graphical User Interface (GUI) Fig. 10. Stored data of GUI

Hardware

MICROCONTROLLERS BASED DEVICE:

Fig. 11. Hardware of Centralized Environmental and Battery Monitoring System

RESULT: CEBMS is designed and developed successfully. All the sub

systems and main system are described above. Different parameters of server room are displayed in GUI of

Monitoring system. Temperature is shown in degree centigrade (0C). Humidity in Percentage (%). Smoke and Water leakage sensors in order to alert by giving

alarm when red color (ON) and safe when green color (OFF). Battery status shows the battery connected with load or not

(ON or OFF). Battery remaining charge percentage (%) and Expected life in

four percentage (100 %, 75%, 50%, 25%).

Results

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