Anti-theft System of Smart Homes Based on GPRS
TELKOMNIKA, Vol.14, No.3A, September 2016, pp. 139~144
ISSN: 1693-6930, accredited A by DIKTI, Decree No: 58/DIKTI/Kep/2013
DOI: 10.12928/TELKOMNIKA.v14i3A.4412
139
Anti-theft System of Smart Homes Based on GPRS
1
Chunfeng Li*1, Dandan Sun2, Wusheng Tang3
Electronic Information Engineering College of Changchun University, Changchun, 130022, China
2
Foreign Language College of Changchun University, Changchun, 130022, China
3
Mechanical and Vehicle Engineering College of Changchun University, Changchun, 130022, China
*Corresponding author, e-mail: 107961758@qq.com, Tel: +86-0431-85250282
Abstract
The smart home is a kind of emergent home furnishing model with the development of science
and technology in modern society, it is also the transition that people seek homes from simple living
spaces to the need of safety, comfort, function and management. The essay will use the technique of
general packet radio service (GPRS) to design the general scheme of anti-theft control system of smart
homes, and then design on the data acquisition module, GPRS communication module, amplifier circuits
of signals, filter circuits, power supply circuits and the flow chart of main software programs.
Keywords: GPRS, smart home, anti-theft control system
Copyright © 2016 Universitas Ahmad Dahlan. All rights reserved.
1. Introduction
The smart home is a kind of new home; it takes the home of resident as the research
subject, computer technology, network communication technology, microelectronic technique,
wiring integrated technique, automation technology and detection technology as backstopping
and combines the techniques of remote control, network communication intelligent control and
system integration, etc. together to supply safe, comfortable and pleasant living conditions. At
present, the smart home at home and abroad is still a new industry, there is no unified standard,
but the design should follow principles of practicability, progressiveness, reliability and
convenience to achieve the functions such as the intelligent control of fire prevention and antitheft, the detection and intelligent control of humidity in the room, the control of emergency
alarm, the remote and intelligent control of appliances, and the entrance guard system, etc. In
recent years, the maturity of wireless communication technology and appearance of GPRS
technology have supplied an efficient and convenient path for the design of smart homes, the
essay designs the anti-theft control system based on GPRS technology [1-2].
2. Research Method
2.1. General Design Scheme
The anti-theft system is a kind of new anti-theft system which takes the single chip
AT89S52asa core and realizes through GPRS technology. It includes the infrared detector, the
glass fragment detector, the GPRS communication module, the alarm buzzer and the liquid
crystal display (LCD), the clock circuit, the reset circuit and the failure display circuit, etc. The
general design scheme is shown as Figure 1. The GPRS communication module adopts
DL6200 communication module produced by world famous manufacture and based on internet
communication mode; it supports passive bus type data transmission. When thieves come into
homes of residents from doors, first infrared detectors of doors detect signals, then mass
through signal amplifiers and transmit to the central control unit-AT89S52 single chip [3], at last
pass to mobile phones and personal computers of users. Users can master the situation of
homes and control alarm buzzers to call the police in real time. When thieves break in through
windows, glass fragment detectors can detect the corresponding signals and pass to mobile
phones of users and personal computers through GPRS mobile data network. At the same time
there are infrared detectors equipped in the rooms, the infrared spectra produced by bodies can
Received March 20, 2016; Revised July 23, 2016; Accepted August 3, 2016
140
ISSN: 1693-6930
be used to carry out data detection, and equally the detected data were passed to mobile
phones and personal computers through GPRS mobile data network [4].
The infrared detectors adopt the high-performance processing circuit of the sensor
singals BISS001, the pyroelectric infrared sensor RE200B and the passive pyroelectric infrared
switch made up of its peripheral circuits. The design scheme of infrared detectors is shown as
Figure 2. The operational principle is to use the characteristic that any object exceeding
absolute temperature will produce infrared spectrum to detect thieves into the rooms. The
pyroelectric infrared sensor can receive infrared rays of radiation that have certain wavelength
when bodies are moving. When thieves come into detecting areas, because its moving causes
the changes of radiation fields in rooms, the pyroelectric infrared sensor RE200B detect infrared
signals, and transfer them into faint electrical signals; when arriving to threshold level, the
detectors output signals and send into input ends of one-level operational amplifier of BISS001
chip, at last pass through internal conversion and get into single chip to carry out processing [57].
The design scheme of glass fragment detectors is shown as Figure 3 it adopts the
pressure sensor of high cost performance MPX4115 produced by Motorola company. The
sensor adopts X-type resistance to replace Wheatstone bridge, which can avoid errors caused
by mismatching resistances. The sensor induces the changes of pressure signals from the
external world, the pressure signals are detected by the pressure sensor MPX4115A, and
voltage signals are output from pin 1, then the signals pass through the filter circuit, the signal
amplifier circuit, and reach single chip to process at last. When glass is broken, the buzzer will
call the police, and signals are sent to personal computers or mobile phones through GPRS
communication module to achieve monitoring in real time. The working voltage of pressure
sensors is 501V, the working current is 7MA, the output voltage is 0.2-4.8V [8, 9].
2.2. Circuit of Hardware
The GPRS communication module in this essay is the communication module DL6200
produced by the world- famous producer and based on internet communicational mode, the
module is used to achieve wireless data transmission in anti-theft system of smart homes. The
data which are detected by infrared detectors and glass fragment detectors and dealt by the
single chip are sent to mobile phones trough GPRS communication module, which make
residents master the situations of rooms in real time. The working voltage of the module is 12V,
interface RS485, emission current ≤12A, emission power ≤33dm+2dB, the module applies to
the environment in the wild. Simultaneously the chips of GSM and GPRS are redeveloped to
realize transparent transmission and TTL serial port communication. The fixed IP and AT
commands are not needed to achieve the transmission and reception of signals.
The essay adopts the amplifying circuit of single-ended input bridge. Its schematic
diagram of circuit is shown as Figure 4. Because the voltage is very small, when the external
signal detected by sensors are transformed to voltage signals ,the signal amplification circuit is
needed to amplify signals, then the amplified signal are input to single chips to process. It is
known from the circuit diagram.
The filter circuit which is used by the design scheme of infrared detectors and glass
fragment detects adopts low-pass filter circuit of 2 orders voltage-controlled voltage sources.
The schematic diagram of circuit is shown as Figure 5. Its main function is to strain off
interference signals in the design schemes of infrared detectors and glass fragment detectors.
The design scheme in the essay is a new kind of sate anti-theft system which takes
AT89S52asthe single chip and uses GPRS technology to realize. The working voltages of
GPRS communication module and AT89S52 single chip are separately 12V and 4-5.5V. In
order to make them working normally, the power supply circuit is needed to design for supplying
electricity. The schematic diagram of power supply circuit is shown as Figure 6. 220V and 50
HZ alternating current is first changed into 11.5V and 46V safe alternating voltage through
transformers, and then rectified into direct current through bridge circuit made of diodes. At last
5V and 12V direct voltages are gotten through 7805 and 7812 fixed voltage, 3-terminal
integrated stabilizer. The rage of precision is between ±3% and ±5%. It supplies electricity for
power consumption equipment.
TELKOMNIKA Vol. 14, No. 3A, September 2016 : 139 – 144
TELKOMNIKA
ISSN: 1693-6930
141
3. Results and Discussion
The design scheme in the essay adopts modular design the schematic diagram of
design is shown as Figure 7. The collected data come from infrared detectors and glass
fragment detectors, the two kinds of signals can be regarded as one switch value. When a
detector detects data, the whole system will be open and judge whether there is a theft. When
the judgment is that there is a theft, the alarm will be open. The data will be conveyed to
mobiles of clients and personal computers of network terminals through GPRS and internet and
by using TCP/IP agreement.
PC
Infrared
detector
buzzer
INTERNET
I/O
GPRS
com munication
network
Clock circuit
Signal
am plifier
LCD
M obile term inals
GPRS
com munication
m odule
M CU
AT89S52
Under voltage
testing
RS485
com m unication
channel
Glass
fragm ent
detector
System failure
testing
Reset circuit
Error display
Power supply
circuit
Debug port
battery
EEPROM
Figure 1. General design scheme
Figure 2. General design scheme of infrared detectors
External pressure
signals
MPX 4115 A
Filter circuit
Signal amplifer
sensors
Figure 3. General design scheme of glass fragment detectors
Anti-theft System of Smart Homes Based on GPRS (Chunfeng Li)
142
ISSN: 1693-6930
V1
R5
R3
+
A1
-
-
R1
R14
+
V0
A3
R8
R7
R2
R6
R4
-
V2
A2
A4
+
+
R9
R11
-V
R10
R12
R13
Figure 4. Schematic diagram of signal amplifying circuit
C1
R
R
up
u0
+
u1
C2
Rf
R1
Figure 5. Low-pass filter circuit
V in
11 . 5V
C1
C2
V out
7805
C3
C4
5V
C8
12V
～ 220V
50H Z
V in
16V
C5
V out
C6
C7
7812
Figure 6. Schematic diagram of power supply circuit
TELKOMNIKA Vol. 14, No. 3A, September 2016 : 139 – 144
TELKOMNIKA
ISSN: 1693-6930
143
b e g in
In itia liz a tio n o f s y s te m
O fflin e d e te c tio n o f
se n so rs
D e te c tio n o f p o w e r s ta te
N
S t e a l?
Y
In fra re d d e te c to r
G la s s fra g m e n t d e te c to r
F in is h
2 0 S la te r a fte r c a ll
th e p o lic e
G P R S s ig n a l
IN T E R N E T
M o b ile te rm in a ls
P e rs o n a l c o m p u te r
re a d s to re d d a ta
Y
S t e a l?
N
C o n c lu s io n
Figure 7. Design scheme of software
4. Conclusion
Through the design and research about anti-theft control system of smart homes based
on GPRS. The essay designs the general scheme of anti-theft control system of smart homes
based on GPRS, the scheme of infrared detectors and glass fragment detectors, and designs
the GPRS communication module in hardware circuit, the signal amplification circuit and the
power supply circuit, etc. Simultaneously, the flow chart of software main programs is also
design to achieve control. From the process of design, we can see that smart homes have a
long way to go before they are fully developed. May the design can supply some theoretical
help for the further study.
Acknowledgement
During the process of writing, parts of teachers in Changchun University have given me
great help. Here give my sincere appreciation to them.
References
[1]
Meng LX, Yu LL, Pu Y P. Design on amplifier circuit of micro-signals. Chinese Journal of Sci entific
Instrument. 2006; 27(6): 1012-1013.
Anti-theft System of Smart Homes Based on GPRS (Chunfeng Li)
144
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
ISSN: 1693-6930
Prakash A. A Comparison of Routing Protocol for WSNs: Redundancy Based Approach A
Comparison of Routing Protocol for WSNs: Redundancy Based Approach. Indonesian Journal of
Electrical Engineering and Informatics. 2014; 2(1): 48-55.
Song XP, Liang Y, Zhang C, et al. Research on the Estimate on the Orientation of the Seismic
Signal Based on the Single Vector Vibration Transducer. Fire Control & Command Control. 2013;
38(5): 18-21.
Su J, Yan ZG, Wu YC. Analysis on signal amplification process of basic amplifica tion circuits.
Modern Equipments in China. 2009; 74(4): 82-83.
Cheng HL, Xu KK. A design scheme of smart homes. Information and Communication Sum. 2012;
118: 98-99.
Wei R, Shen X, Yang Y. Urban Real-Time Traffic Monitoring Method Based on the Simplified
Network Model. International Journal of Multimedia & Ubiquitous Engineering. 2016; 11(3): 199208.
Su S, Wang S. Simple Monitoring Network System of Wireless Sensor Network. Bulletin of Electrical
Engineering and Informatics. 2012; 1(4): 251-254.
Gang Li, Xiaofeng Zhao, Dianzhong Wen, Yang Yu. Research on Silicon-based Planar Spiral
Inductance Coil Based on Microelectromechanical System. TELKOMNIKA (Telecommunication
Computing Electronics and Control). 2015; 13(4): 1127-1132.
Chang M, Wang Q. Application of Wireless Sensor Network and GPRS Technology in development
of Remote Monitoring System. TELKOMNIKA Indonesian Journal of Electrical Engineering. 2015;
13(1): 151-158.
TELKOMNIKA Vol. 14, No. 3A, September 2016 : 139 – 144
ISSN: 1693-6930, accredited A by DIKTI, Decree No: 58/DIKTI/Kep/2013
DOI: 10.12928/TELKOMNIKA.v14i3A.4412
139
Anti-theft System of Smart Homes Based on GPRS
1
Chunfeng Li*1, Dandan Sun2, Wusheng Tang3
Electronic Information Engineering College of Changchun University, Changchun, 130022, China
2
Foreign Language College of Changchun University, Changchun, 130022, China
3
Mechanical and Vehicle Engineering College of Changchun University, Changchun, 130022, China
*Corresponding author, e-mail: 107961758@qq.com, Tel: +86-0431-85250282
Abstract
The smart home is a kind of emergent home furnishing model with the development of science
and technology in modern society, it is also the transition that people seek homes from simple living
spaces to the need of safety, comfort, function and management. The essay will use the technique of
general packet radio service (GPRS) to design the general scheme of anti-theft control system of smart
homes, and then design on the data acquisition module, GPRS communication module, amplifier circuits
of signals, filter circuits, power supply circuits and the flow chart of main software programs.
Keywords: GPRS, smart home, anti-theft control system
Copyright © 2016 Universitas Ahmad Dahlan. All rights reserved.
1. Introduction
The smart home is a kind of new home; it takes the home of resident as the research
subject, computer technology, network communication technology, microelectronic technique,
wiring integrated technique, automation technology and detection technology as backstopping
and combines the techniques of remote control, network communication intelligent control and
system integration, etc. together to supply safe, comfortable and pleasant living conditions. At
present, the smart home at home and abroad is still a new industry, there is no unified standard,
but the design should follow principles of practicability, progressiveness, reliability and
convenience to achieve the functions such as the intelligent control of fire prevention and antitheft, the detection and intelligent control of humidity in the room, the control of emergency
alarm, the remote and intelligent control of appliances, and the entrance guard system, etc. In
recent years, the maturity of wireless communication technology and appearance of GPRS
technology have supplied an efficient and convenient path for the design of smart homes, the
essay designs the anti-theft control system based on GPRS technology [1-2].
2. Research Method
2.1. General Design Scheme
The anti-theft system is a kind of new anti-theft system which takes the single chip
AT89S52asa core and realizes through GPRS technology. It includes the infrared detector, the
glass fragment detector, the GPRS communication module, the alarm buzzer and the liquid
crystal display (LCD), the clock circuit, the reset circuit and the failure display circuit, etc. The
general design scheme is shown as Figure 1. The GPRS communication module adopts
DL6200 communication module produced by world famous manufacture and based on internet
communication mode; it supports passive bus type data transmission. When thieves come into
homes of residents from doors, first infrared detectors of doors detect signals, then mass
through signal amplifiers and transmit to the central control unit-AT89S52 single chip [3], at last
pass to mobile phones and personal computers of users. Users can master the situation of
homes and control alarm buzzers to call the police in real time. When thieves break in through
windows, glass fragment detectors can detect the corresponding signals and pass to mobile
phones of users and personal computers through GPRS mobile data network. At the same time
there are infrared detectors equipped in the rooms, the infrared spectra produced by bodies can
Received March 20, 2016; Revised July 23, 2016; Accepted August 3, 2016
140
ISSN: 1693-6930
be used to carry out data detection, and equally the detected data were passed to mobile
phones and personal computers through GPRS mobile data network [4].
The infrared detectors adopt the high-performance processing circuit of the sensor
singals BISS001, the pyroelectric infrared sensor RE200B and the passive pyroelectric infrared
switch made up of its peripheral circuits. The design scheme of infrared detectors is shown as
Figure 2. The operational principle is to use the characteristic that any object exceeding
absolute temperature will produce infrared spectrum to detect thieves into the rooms. The
pyroelectric infrared sensor can receive infrared rays of radiation that have certain wavelength
when bodies are moving. When thieves come into detecting areas, because its moving causes
the changes of radiation fields in rooms, the pyroelectric infrared sensor RE200B detect infrared
signals, and transfer them into faint electrical signals; when arriving to threshold level, the
detectors output signals and send into input ends of one-level operational amplifier of BISS001
chip, at last pass through internal conversion and get into single chip to carry out processing [57].
The design scheme of glass fragment detectors is shown as Figure 3 it adopts the
pressure sensor of high cost performance MPX4115 produced by Motorola company. The
sensor adopts X-type resistance to replace Wheatstone bridge, which can avoid errors caused
by mismatching resistances. The sensor induces the changes of pressure signals from the
external world, the pressure signals are detected by the pressure sensor MPX4115A, and
voltage signals are output from pin 1, then the signals pass through the filter circuit, the signal
amplifier circuit, and reach single chip to process at last. When glass is broken, the buzzer will
call the police, and signals are sent to personal computers or mobile phones through GPRS
communication module to achieve monitoring in real time. The working voltage of pressure
sensors is 501V, the working current is 7MA, the output voltage is 0.2-4.8V [8, 9].
2.2. Circuit of Hardware
The GPRS communication module in this essay is the communication module DL6200
produced by the world- famous producer and based on internet communicational mode, the
module is used to achieve wireless data transmission in anti-theft system of smart homes. The
data which are detected by infrared detectors and glass fragment detectors and dealt by the
single chip are sent to mobile phones trough GPRS communication module, which make
residents master the situations of rooms in real time. The working voltage of the module is 12V,
interface RS485, emission current ≤12A, emission power ≤33dm+2dB, the module applies to
the environment in the wild. Simultaneously the chips of GSM and GPRS are redeveloped to
realize transparent transmission and TTL serial port communication. The fixed IP and AT
commands are not needed to achieve the transmission and reception of signals.
The essay adopts the amplifying circuit of single-ended input bridge. Its schematic
diagram of circuit is shown as Figure 4. Because the voltage is very small, when the external
signal detected by sensors are transformed to voltage signals ,the signal amplification circuit is
needed to amplify signals, then the amplified signal are input to single chips to process. It is
known from the circuit diagram.
The filter circuit which is used by the design scheme of infrared detectors and glass
fragment detects adopts low-pass filter circuit of 2 orders voltage-controlled voltage sources.
The schematic diagram of circuit is shown as Figure 5. Its main function is to strain off
interference signals in the design schemes of infrared detectors and glass fragment detectors.
The design scheme in the essay is a new kind of sate anti-theft system which takes
AT89S52asthe single chip and uses GPRS technology to realize. The working voltages of
GPRS communication module and AT89S52 single chip are separately 12V and 4-5.5V. In
order to make them working normally, the power supply circuit is needed to design for supplying
electricity. The schematic diagram of power supply circuit is shown as Figure 6. 220V and 50
HZ alternating current is first changed into 11.5V and 46V safe alternating voltage through
transformers, and then rectified into direct current through bridge circuit made of diodes. At last
5V and 12V direct voltages are gotten through 7805 and 7812 fixed voltage, 3-terminal
integrated stabilizer. The rage of precision is between ±3% and ±5%. It supplies electricity for
power consumption equipment.
TELKOMNIKA Vol. 14, No. 3A, September 2016 : 139 – 144
TELKOMNIKA
ISSN: 1693-6930
141
3. Results and Discussion
The design scheme in the essay adopts modular design the schematic diagram of
design is shown as Figure 7. The collected data come from infrared detectors and glass
fragment detectors, the two kinds of signals can be regarded as one switch value. When a
detector detects data, the whole system will be open and judge whether there is a theft. When
the judgment is that there is a theft, the alarm will be open. The data will be conveyed to
mobiles of clients and personal computers of network terminals through GPRS and internet and
by using TCP/IP agreement.
PC
Infrared
detector
buzzer
INTERNET
I/O
GPRS
com munication
network
Clock circuit
Signal
am plifier
LCD
M obile term inals
GPRS
com munication
m odule
M CU
AT89S52
Under voltage
testing
RS485
com m unication
channel
Glass
fragm ent
detector
System failure
testing
Reset circuit
Error display
Power supply
circuit
Debug port
battery
EEPROM
Figure 1. General design scheme
Figure 2. General design scheme of infrared detectors
External pressure
signals
MPX 4115 A
Filter circuit
Signal amplifer
sensors
Figure 3. General design scheme of glass fragment detectors
Anti-theft System of Smart Homes Based on GPRS (Chunfeng Li)
142
ISSN: 1693-6930
V1
R5
R3
+
A1
-
-
R1
R14
+
V0
A3
R8
R7
R2
R6
R4
-
V2
A2
A4
+
+
R9
R11
-V
R10
R12
R13
Figure 4. Schematic diagram of signal amplifying circuit
C1
R
R
up
u0
+
u1
C2
Rf
R1
Figure 5. Low-pass filter circuit
V in
11 . 5V
C1
C2
V out
7805
C3
C4
5V
C8
12V
～ 220V
50H Z
V in
16V
C5
V out
C6
C7
7812
Figure 6. Schematic diagram of power supply circuit
TELKOMNIKA Vol. 14, No. 3A, September 2016 : 139 – 144
TELKOMNIKA
ISSN: 1693-6930
143
b e g in
In itia liz a tio n o f s y s te m
O fflin e d e te c tio n o f
se n so rs
D e te c tio n o f p o w e r s ta te
N
S t e a l?
Y
In fra re d d e te c to r
G la s s fra g m e n t d e te c to r
F in is h
2 0 S la te r a fte r c a ll
th e p o lic e
G P R S s ig n a l
IN T E R N E T
M o b ile te rm in a ls
P e rs o n a l c o m p u te r
re a d s to re d d a ta
Y
S t e a l?
N
C o n c lu s io n
Figure 7. Design scheme of software
4. Conclusion
Through the design and research about anti-theft control system of smart homes based
on GPRS. The essay designs the general scheme of anti-theft control system of smart homes
based on GPRS, the scheme of infrared detectors and glass fragment detectors, and designs
the GPRS communication module in hardware circuit, the signal amplification circuit and the
power supply circuit, etc. Simultaneously, the flow chart of software main programs is also
design to achieve control. From the process of design, we can see that smart homes have a
long way to go before they are fully developed. May the design can supply some theoretical
help for the further study.
Acknowledgement
During the process of writing, parts of teachers in Changchun University have given me
great help. Here give my sincere appreciation to them.
References
[1]
Meng LX, Yu LL, Pu Y P. Design on amplifier circuit of micro-signals. Chinese Journal of Sci entific
Instrument. 2006; 27(6): 1012-1013.
Anti-theft System of Smart Homes Based on GPRS (Chunfeng Li)
144
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
ISSN: 1693-6930
Prakash A. A Comparison of Routing Protocol for WSNs: Redundancy Based Approach A
Comparison of Routing Protocol for WSNs: Redundancy Based Approach. Indonesian Journal of
Electrical Engineering and Informatics. 2014; 2(1): 48-55.
Song XP, Liang Y, Zhang C, et al. Research on the Estimate on the Orientation of the Seismic
Signal Based on the Single Vector Vibration Transducer. Fire Control & Command Control. 2013;
38(5): 18-21.
Su J, Yan ZG, Wu YC. Analysis on signal amplification process of basic amplifica tion circuits.
Modern Equipments in China. 2009; 74(4): 82-83.
Cheng HL, Xu KK. A design scheme of smart homes. Information and Communication Sum. 2012;
118: 98-99.
Wei R, Shen X, Yang Y. Urban Real-Time Traffic Monitoring Method Based on the Simplified
Network Model. International Journal of Multimedia & Ubiquitous Engineering. 2016; 11(3): 199208.
Su S, Wang S. Simple Monitoring Network System of Wireless Sensor Network. Bulletin of Electrical
Engineering and Informatics. 2012; 1(4): 251-254.
Gang Li, Xiaofeng Zhao, Dianzhong Wen, Yang Yu. Research on Silicon-based Planar Spiral
Inductance Coil Based on Microelectromechanical System. TELKOMNIKA (Telecommunication
Computing Electronics and Control). 2015; 13(4): 1127-1132.
Chang M, Wang Q. Application of Wireless Sensor Network and GPRS Technology in development
of Remote Monitoring System. TELKOMNIKA Indonesian Journal of Electrical Engineering. 2015;
13(1): 151-158.
TELKOMNIKA Vol. 14, No. 3A, September 2016 : 139 – 144