Download Standalone data logger in SD/MMC card with time stamp for

Standalone data logger in SD/MMC card with time stamp for
industrial applications
Abstract:
This project deals with the design and development of hardware and software for
industrial data logger system. A data logger (also data logger or data recorder) is an electronic
device that records data over time or in relation to location either with a built in instrument or
sensor or by using external instruments and sensors. One of the primary advantages of using
these data loggers is the ability to automatically and continuously collect data on a 24-hour basis.
Present data logger systems need a PC to store the data as the data logger systems do not
have sufficient memory and they takes much time to store the data as they are using low speed
micro controllers. These systems are more costly, consumes more power and slow processing
time. These problems can be achieved easily by using advancement in latest technologies.
Now a day’s so many advanced technologies are coming out especially in the field of electronics
to make our life style more comfort, and secure to create smart systems with sophisticated
functionalities. This project is designed with advanced ARM7 based LPC2148 micro controller
and high data storage capacity memory cards.
The data which are recorded continuously in this project are Temperature and Voltage.
These analog quantities are taken and converted into corresponding digital values using ADC of
micro controller. These converted digital values are sent to memory card and these values are
stored in with time stamp in excel format for easy further processing.
The NXP (founded by Philips) LPC2148 is an ARM7TDMI-S based high-performance 32-bit
RISC Microcontroller with Thumb extensions 512KB on-chip Flash ROM with In-System
Programming (ISP) and In-Application Programming (IAP), 32KB RAM, Vectored Interrupt
Controller, Two 10bit ADCs with 14 channels, USB 2.0 Full Speed Device Controller, Two
UARTs, Two I2C serial interfaces, Two SPI serial interfaces Two 32-bit timers, Watchdog
For Further Details-A Vinay, Managing director
Ph: 9030333433, 0877-2261612
Timer, PWM unit, Real Time Clock with optional battery backup, Brown out detect circuit
General purpose I/O pins.
The advantage of memory card is we can store more data, the storage range is in Giga Bytes and
the read and write time is too fast and we can create files in suitable formats. The communication
between SD card and our controller is established using SPI communication.
BLOCK DIAGRAM:
LCD
LPC2148
RESET
CRYSTAL
OSCILLATOR
32.768 KHZ
CRYSTAL
FOR RTC
M
I
C
R
O
TEMPERATURE
C
O
N
T
R
O
L
L
E
R
SENSOR
ADC
Pins
VOLTAGE SENSING
CIRCUIT
SPI
Pins
For Further Details-A Vinay, Managing director
Ph: 9030333433, 0877-2261612
SD CARD SLOT
Software Tools:
 KEIL IDE for developing micro controller code
 ORCAD for designing schematics
 FLASH MAGIC for dumping the hex file into controller
Hardware Tools:
 ARM7 LPC2148 Micro controller.
 Voltage sensing circuit.
 Temperature sensor.
 SD card
 Regulated +3.3v Power supply.
 3.3v CMOS battery and 32.768 KHz crystal for inbuilt RTC chip of LPC2148.
Advantages:
 No need to of computer while logging the data.
 Easy to use, easy to install as it is simple stand alone system.
 Low cost, small size and low power.
 Data storage in user friendly formats.
Applications:
For Further Details-A Vinay, Managing director
Ph: 9030333433, 0877-2261612
 Useful for Weather monitoring systems
 Useful for chemical labs.
 Useful for water board to monitor water usage.
 Useful for production based companies
 Can be used for report making systems.
For Further Details-A Vinay, Managing director
Ph: 9030333433, 0877-2261612