ST STEVAL-IFS014V1 User manual

January 2010 Doc ID 16752 Rev 1 1/66
UM0857
User manual
Smart monitoring system STEVAL-IFS014V1
and STEVAL-IFS015V1, based on the STM32x
Introduction
This document explains the functioning of the "smart monitoring system" and also serves as
a quick reference manual to operate the system. The smart monitoring system works on
ZigBee®wireless technology and measures temperature, humidity and light intensity of 9
remote and different locations simultaneously. The system also demonstrates the wireless
control of home appliances and can serve as a basis for many new systems.
The objective of this demonstration board is to design a complete system which
demonstrates the effectiveness of low data rate wireless solutions from ST in automating
various measurements for weather parameters. This system can be further interfaced to
take an appropriate action based on the parameters being monitored. The system can very
easily be modified to control various household appliances by suitable additional hardware.
This system uses various devices, the most relevant are the STM32x (microcontroller),
SPZB260 (ZigBee®device), LIS331DLH (MEMS), STMPE811 (touchscreen controller),
STLM20 (temperature sensor) and various power supply components along with the battery
charger. The system has been designed taking future expandability into consideration.
The system can be powered up using:
■External power supply
■3.7 V Li-Ion battery
To summarize, the key features of the system are:
■Wireless network
■Monitoring of weather parameters (temperature, humidity, light intensity)
■Wireless light control application
■Node movement and simultaneous node movement detection
■Various weather warning configurations and alarm messages
■TFT display with touchscreen
■Real-time clock along with alarm configurations
■Data logging for more than one year
■GUI for data reading, saving and analysis using graphs
■Power management system
■Battery charging capability
■Embedded in-circuit programming capability using JTAG
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Contents UM0857
2/66 Doc ID 16752 Rev 1
Contents
1 System features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 Wireless network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 Single node movement detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.3 Simultaneous node movement detection . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4 Weather alarm conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.5 Light control application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.6 Data logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.7 User interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.7.1 TFT display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.7.2 Touchscreen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.7.3 Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.7.4 LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.7.5 Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.8 Graphical user interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.9 Clock and alarm feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.10 Powering the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 System content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3 Hardware installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.4 Powering up the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3 System operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.1 Starting up the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.2 Establishing the network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.3 Seeing the parameters of a specific node . . . . . . . . . . . . . . . . . . . . . . . . 18
3.4 Data logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.5 Alarm system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.5.1 Threshold crossing of weather parameters . . . . . . . . . . . . . . . . . . . . . . 20
3.5.2 Node movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.5.3 Simultaneous node movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
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UM0857 Contents
Doc ID 16752 Rev 1 3/66
3.5.4 Low battery and battery recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.5.5 Clock alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4 Description of the STEVAL-IFS014V1 (smart monitoring station) . . . 23
4.1 Components of the sensor data screen . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.2 Dedicated symbols for important actions . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.3 Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.3.1 USB mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.3.2 About . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.3.3 Switching the lamp on or off (light application) . . . . . . . . . . . . . . . . . . . 25
4.3.4 Setting the system time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.3.5 Setting the clock alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.3.6 Setting the various warning alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.3.7 No-display mode (power saving) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.3.8 System restore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.4 Meaning of navigational icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5 Description of the STEVAL-IFS015V1 (smart monitoring node) . . . . . 29
5.1 Components of default display screen . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.2 Other messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.3 JTAG connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6 Additional setup information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.1 Complete example of menu navigation of STEVAL-IFS014V1 . . . . . . . . 31
6.2 Factory default values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.3 LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.4 Battery connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.4.1 Battery connection - STEVAL-IFS014V1 . . . . . . . . . . . . . . . . . . . . . . . . 36
6.4.2 Battery connection - STEVAL-IFS015V1 . . . . . . . . . . . . . . . . . . . . . . . . 40
7 Schematics and bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7.1 Schematic and bill of material of STEVAL-IFS014V1 . . . . . . . . . . . . . . . . 46
7.2 Schematic and bill of material of STEVAL-IFS015V1 . . . . . . . . . . . . . . . . 57
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
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List of tables UM0857
4/66 Doc ID 16752 Rev 1
List of tables
Table 1. Parameters of ZigBee network for smart monitoring system . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 2. Bill of material of STEVAL-IFS014V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Table 3. Bill of material of STEVAL-IFS015V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Table 4. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
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UM0857 List of figures
Doc ID 16752 Rev 1 5/66
List of figures
Figure 1. Smart monitoring station (STEVAL-IFS014V1) - front view . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 2. Smart monitoring station (STEVAL-IFS014V1) - side view. . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 3. Smart monitoring station (STEVAL-IFS014V1) - back view . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 4. Smart monitoring node (STEVAL-IFS015V1) - front view. . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 5. Smart monitoring node (STEVAL-IFS015V1) - side view . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 6. Smart monitoring node (STEVAL-IFS015V1) - back view . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 7. Welcome screens of STEVAL-IFS014V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 8. Initial data screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 9. Newly joined node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 10. Assign node number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 11. Sensor data screen with one active node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 12. Sensor data screen with more than one active node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 13. Selecting the node to see the parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 14. Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 15. Node movement - alarm message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 16. Simultaneous node movement of nodes 2, 4 and 5 caused simultaneous movement
detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 17. Sensor data screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 18. Dedicated icons for various actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 19. Menu details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 20. Configured clock alarm indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 21. Details of data screen of STEVAL-IFS015V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 22. Various other message screens of STEVAL-IFS015V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 23. Selecting “MENU” using stylus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 24. Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 25. “SETTINGS” menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 26. “CLOCK” menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 27. “SYSTEM TIME” - 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 28. “SYSTEM TIME” - 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 29. “SYSTEM TIME” - 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 30. “SET SYSTEM TIME” - 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 31. “SET SYSTEM DATE” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 32. Dimensions of Li-Ion battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 33. Back of STEVAL-IFS014V1 and screwdriver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 34. Removal of rubber pads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 35. Removal of screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 36. Front of STEVAL-IFS014V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 37. Opening the top cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 38. Removing the cover of double-sided tape for battery placement . . . . . . . . . . . . . . . . . . . . 37
Figure 39. Battery correctly placed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 40. Battery soldering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 41. Checking that the battery connection is correct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 42. Closing the top cover of the case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 43. Tightening the screws. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 44. 3 V coin-type CR2032 battery insertion for RTC power backup . . . . . . . . . . . . . . . . . . . . . 40
Figure 45. Back of STEVAL-IFS015V1 and screwdriver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 46. Removal of rubber pads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 47. Removal of screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
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List of figures UM0857
6/66 Doc ID 16752 Rev 1
Figure 48. Front of STEVAL-IFS015v1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 49. Removal of top cover of the case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 50. Removing the LCD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 51. Removing the cover of double-sided tape for battery placement . . . . . . . . . . . . . . . . . . . . 42
Figure 52. Battery correctly placed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Figure 53. Soldering the battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Figure 54. Checking that the battery connections are correct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Figure 55. Applying the LCD and closing the top cover of case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Figure 56. Tightening the case with screws. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Figure 57. Applying the rubber pads and STEVAL-IFS015V1 powered up with battery . . . . . . . . . . . 45
Figure 58. 3 V coin-type CR2032 battery insertion for RTC power backup . . . . . . . . . . . . . . . . . . . . . 45
Figure 59. Sheet 1 of schematic of STEVAL-IFS014V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 60. Sheet 2 of schematic of STEVAL-IFS014V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 61. Sheet 3 of schematic of STEVAL-IFS014V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Figure 62. Sheet 4 of schematic of STEVAL-IFS014V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 63. Sheet 5 of schematic of STEVAL-IFS014V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Figure 64. Sheet 1 of schematic of STEVAL-IFS015V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Figure 65. Sheet 2 of schematic of STEVAL-IFS015V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Figure 66. Sheet 3 of schematic of STEVAL-IFS015V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
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UM0857 System features
Doc ID 16752 Rev 1 7/66
1 System features
The "smart monitoring system" has been designed and developed to give the user a number
of original features which make this system unique. The system is comprised of one smart
monitoring station (STEVAL-IFS014V1) and a maximum of 8 different smart monitoring
nodes (STEVAL-IFS015V1). The smart monitoring station and all the nodes make a
wireless STAR network and all the nodes communicate with the smart station using ZigBee
protocol. The smart station is a handheld device and can be carried by the user from one
place to another. Also the size of the smart monitoring node is small and can be placed
anywhere.
1.1 Wireless network
The smart monitoring station (STEVAL-IFS014V1) behaves as the coordinator of the
ZigBee network and develops the network with a predefined network ID. The smart
monitoring node (STEVAL-IFS015V1) can connect to the network as the end device. At any
time the complete network can have a maximum of 8 nodes, and the weather parameters of
all the nodes can be seen at the smart station along with those of the smart station.
The user can assign the application node numbers to the nodes which are connected during
the system installation. This gives the user the freedom to assign a specific number to the
connected node and place it anywhere.
Some of the key features of the wireless network are as follows:
●The system network supports one smart station (STEVAL-IFS014V1) and a maximum
of 8 different nodes (STEVAL-IFS015V1)
●The user can assign the node number one at a time to the nodes being joined to the
system
●Whenever a node is switched off or gets out of range, the system detects its absence
and after ~1 minute, this node displays the message "node left"
●If a node is switched off or gets out of range and comes back, the system detects it and
this node gets its previous user-assigned ID again without any intervention from the
user
●If, in a working network, the power of the smart station is turned off and is powered up
again, then after complete startup, the system itself recognizes all the previous active
nodes of the system and re-assigns them the user-assigned numbers without any
intervention from the user.
For the smart monitoring system, the following configurations of the ZigBee network have
been used.
Table 1. Parameters of ZigBee network for smart monitoring system
Parameter Value
Channel 26
Panid 0x01F0
Extended panid {'H','W','M','S','_','S','T','M'}
Power 3
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System features UM0857
8/66 Doc ID 16752 Rev 1
Note: Please note that these parameters have been chosen without any special consideration and
can be changed later, but they should be the same for STEVAL-IFS014V1 and STEVAL-
IFS015V1.
1.2 Single node movement detection
The system also detects movement or vibration of the active nodes in which case the buzzer
sounds at the smart node and the smart station also receives this information. At the smart
station an alarm buzzer sounds along with a message on the TFT display.
The system also calibrates the node movement into five different levels and stores this data
along with the node number, severity level, date and time stamp. Node movement levels are
defined in a range from 1 to 5 where 1 is the lowest intensity and 5 is the highest intensity.
1.3 Simultaneous node movement detection
The system has the capability to detect the simultaneous movement of all the connected
nodes. The system detects simultaneous movement and sounds a buzzer alarm for the user
and displays the warning message on the TFT display. This information is also stored in the
data logging system along with the date and time stamp as “earthquake”.
Note: In the GUI of the system, the simultaneous movement of nodes is designated as
“earthquake”.
Note: Simultaneous movement detection is possible only when the nodes have joined the system
and are active, otherwise no earthquake detection is done as the smart station itself is a
handheld system.
1.4 Weather alarm conditions
The system has the capability to configure the various maximum and minimum threshold
values of the weather parameters of all the nodes connected to the system for the alarm
conditions. Each node can be configured for different values.
Whenever any alarm condition of any of the smart node is reached, an alarm signal is given
at the smart node as well as at the smart monitoring station.
The user can change the alarm conditions at any time through the smart monitoring station;
there is no need to restart the system or node.
profile_ID 0xAAAA
Cluster_ID 0x0045
Table 1. Parameters of ZigBee network for smart monitoring system (continued)
Parameter Value
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UM0857 System features
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1.5 Light control application
The system demonstrates the application of wireless light control through which the user
can control the LED lamp of any active smart node (D1 of STEVAl-IFS05V1) through the
smart station.
This is just the demonstration of the wireless light control application and can be enlarged to
a wider level to control any electrical appliance.
1.6 Data logging
The system has a data logging system which can store the data of more than one year (two
values for each parameter of each node per day). The data logging system stores the
maximum and minimum values of all the parameters of all the active smart nodes (STEVAL-
IFS015V1) and smart station (STEVAL-IFS014V1) of one day along with the time stamp.
The user can refer to the maximum and minimum value of any of the parameters of any of
the nodes of any date and the time when it happened.
It also stores the node movement data of all the nodes along with the severity level, date and
time stamp. So the user can view later which node was moved at which date and at what
time.
Similar to the node movement data, the system also stores the earthquake (simultaneous
movement of all active nodes) along with the severity level, date and time stamp.
Note: In the present system, the earthquake severity level is not calculated and has been set to
minimum level 1.
1.7 User interface
The system has been provided with an interactive user interface with the features described
in the following sections.
1.7.1 TFT display
The smart station (STEVAL-IFS014V1) has been provided with a 2.4" color TFT display on
which all the data is displayed along with the various colored icons/symbols.
The smart node (STEVAl-IFS015V1) has been provided with a 122 X 32 graphical LCD
display.
1.7.2 Touchscreen
The smart station (STEVAL-IFS014V1) has a touchscreen with which the user can navigate
through the menu by just pressing the particular option displayed on the display. A beep
produced by the buzzer confirms every screen touch.
1.7.3 Buzzer
Both the smart station and node have been provided with a buzzer which is used for the
alarm conditions.
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System features UM0857
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1.7.4 LEDs
Both the smart station and node have been provided with four status LEDs and one LED
lamp (see Section 6.3).
1.7.5 Menu
Apart from all the hardware human interfaces, the system has been provided with a very
good and user-friendly menu with which the user can perform various actions and settings.
1.8 Graphical user interface
The system is provided with a very useful graphical user interface to read and analyze the
data logged in the system.
Some of the key features of the GUI are:
●All the logged data can be read from the system within 2-3 seconds
●The read data can be saved in the computer and can be analyzed at any time, if the
system is connected to the computer or not
●The user can separate the data of the various nodes from any start and end date and
can save the data in a .csv file format (.csv is a standard file format which stands for
comma separated values. This file can be viewed using the software tool Microsoft
office Excel.)
●The user can also plot the data in various graphs and can compare the data of the
various nodes with each other and also for different dates of one node
●Graphs can be generated with various features to visualize the data in a proper way
●The user can save the graphs as pictures and even print the graphs.
1.9 Clock and alarm feature
The system has a built-in real-time clock. The user has the flexibility to set the clock
time/date using the menu and the clock keeps running even when the system is not
powered up. The user can also set the clock alarm for the same day.
1.10 Powering the system
The system has multiple ways of powering up with key features:
●Both the smart station (STEVAL-IFS014V1) and smart node (STEVAL-IFS015V1) can
be powered up using the USB power supply (5 V) or 3.7 V Li-Ion battery
●The system has the capability to switch over from the external supply to battery backup
and vice versa by itself
●When external USB power is available, the onboard battery starts charging and the
system itself operates using external power
●The system has the capability to detect the low battery of the smart station (STEVAL-
IFS014V1) as well as of the nodes (STEVAl-IFS015V1), and the information is
displayed as an alarm and indicator of a low battery.
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