12-05-2012, 10:59 AM
DESIGN AND IMPLEMENTATION OF WIRELESS REMOTE MONITORING SYSTEM BASED ON GSM USING PSOC MIXED SIGNAL MICROCONTROLLER.
[attachment=21940]
Abstract:
Wireless remote monitoring systems are very much essential in industrial environment where manual movement is not possible. Today several wireless technologies are used for building wireless sensor networks. Among them the GSM network is most widely deployed and used. The usage of GSM for voice communication indicates that the GSM infrastructure can give near real time responses and makes suitable for crucial industrial monitoring systems. In this project a complete remote monitoring system will be designed with two GSM modems and PSoC microcontroller. The Cypress PSoC (programmable system on chip) microcontroller being capable of programmable software and hardware becomes very much suitable for sensor interfacing. The project work consists of development of hardware with embedded software which will be deployed at the remote site and the PC based software development for GUI design and serial port communication at the monitoring center. The embedded system with PSoC Cy29466 microcontroller consists of 4 analog channels and 4 digital channels for monitoring and sending over GSM network. For demonstration one temperature sensor, one gas sensor and one smoke sensor will be connected to the microcontroller. The microcontroller communicates to the GSM using serial port link. The GSM sends the sensor data at the preprogrammed intervals, which can be set from the monitoring station. The embedded system also consists of few relays which can be controlled through monitoring station. The monitoring center consists of a computer and a GSM modem communicating over serial port. The computer consists of VC++ program for serial port communication and display of sensor data. PSoC designer software will be used for developing the embedded software and Visual studio software will be used for developing the PC software. SIM300 GSM modems will be used on both sides. AT commands will be used for communication with GSM modems.
1.1 INTRODUCTION.
What is industrial Automation
Automation or industrial automation or numerical control is the use of control systems such as computers to control industrial machinery and processes, reducing the need for human intervention.[1] In the scope of industrialization, automation is a step beyond mechanization. Whereas mechanization provided human operators with machinery to assist them with the physical requirements of work, automation greatly reduces the need for human sensory and mental requirements as well. Processes and systems can also be automated. Automation plays an increasingly important role in the global economy and in daily experience. Engineers strive to combine automated devices with mathematical and organizational tools to create complex systems for a rapidly expanding range of applications and human activities. Many roles for humans in industrial processes presently lie beyond the scope of automation. Human-level pattern recognition, language recognition, and language production ability are well beyond the capabilities of modern mechanical and computer systems. Tasks requiring subjective assessment or synthesis of complex sensory data, such as scents and sounds, as well as high-level tasks such as strategic planning, currently require human expertise. In many cases, the use of humans is more cost-effective than mechanical approaches even where automation of industrial tasks is possible. Specialised hardened computers, referred to as programmable logic controllers (PLCs), are frequently used to synchronize the flow of inputs from (physical) sensors and events with the flow of outputs to actuators and events. This leads to precisely controlled actions that permit a tight control of almost any industrial process. Human-machine interfaces (HMI) or computer human interfaces (CHI), formerly known as man-machine interfaces, are usually employed to communicate with PLCs and other computers, such as entering and monitoring temperatures or pressures for further automated control or emergency response. Service personnel who monitor and control these interfaces are often referred to as stationary engineers.[2] Industrial automation is process of controlling and guiding the industrial equipment., process and systems with less of the human intervention. The operation and control of the modern industrial equipment and process needs lot of sensors to monitor various parameters of the systems.
1.2Context of the project:
• Monitoring of the Critical sensor monitoring is very important in several industries (Nuclear plants, power plants, petroleum and gas) . This job should be done with at most accuracy and reliabley. The sensor information should be available at various locations simultaneously to take accurate decisions. This kind of requirement can be met by using the central servers and connecting the sensor networks through the controllers to the central servers.
• Most of the systems require features which are given by web server kind of architecture on wireless
– Authentication (of the person commanding)
– Port numbers for each connecting application
• but the deployment of web server is costly and complex to maintain
• Maintaining the wireless network has issues
• GSM network is readily available wireless secured network
• Growing technological research towards 3G suggests this alternative
1.3 Existing Systems:
Majority of the companies in INDIA have not implemented Automation practices in industry. Except few large industries majority of the companies can not afford to invest huge amount of money oin the existing costly setups to meet the requirements of Industrial Automation. Existing methods widely use the following technologies to communicate the in formation from one end to the other end of the company.
• Using Bluetooth
-but it is limited to short range
• Using Zigbee/ IEEE802.15.4
- Range is upto only few Kms maximum
• Using Wi-Fi
- Requires costly equipment setup.
- High cost and high power consumption
All the methods discussed above are quite expensive and complex to implement and not very reliable. The availability of information at various nodes simultaneously is not achieved.
1.4 Proposed Architecture:
In this Project an attempt has been made to develop a GSM (Global System for Mobil communication) based industrial Automation system. Using the public GSM networks, an industrial automation system has been proposed, designed, implemented and tested. The design of a stand-alone embedded system that can monitor and control various process and equipment and critical systems locally using built-in input and output peripherals is presented. Remotely, the system allows the various authorities monitoring and controlling the critical parameters via the mobile phone set by sending commands in the form of SMS messages and receiving the process status. The GSM modem provides the communication media between the Authority and the system by means of SMS messages. The system software driver is also developed using an interactive C programming language platform.
1.4.1 Basic Principle:
• Micro controller is interfaced with sensors, actuators and with GSM modem.
• PSoC controller is programmed with the default control algorithm. The sensor information processed by the controller can be rooted to the users. by power on controllers sends status SMS to predefined numbers
• User can update the control algorithm by sending an SMS.
• User can get the status and change mode also by sending SMS.
• Modem performs the operation and gives acknowledgment message to the user.
Micro controller is interfaced with sensors like Temperature, IR , Smoke sensors. The basic idea of these sensors is to monitor the parameters of various systems. For example monitoring the boiler performance in a thermal / Nuclear power plant can be done by using Temperature of the boiler. If any increase in the temperature of the system beyond the threshold has been recorded, the controller is instructed to initiate a corrective action. At the initial phase the controller will send an SMS to the authorised user. Based on the information received the user can initiate the corrective action. In the above case the temperature can be brought down by controlling the heat input. The same instruction will be initiated by the user. After receiving the corrective command, the controller will activate the necessary modules to reduce the heat input. The basic functionality of the smoke sensors is to control the parameters of the process based on the external parameters and uncontrolled combustion happening, because of the malfunction and break down of certain combustion process.
1.5 What is GSM?
GSM (Global System for Mobile communication) is a digital mobile telephone system that is widely used in Europe and other parts of the world. GSM uses a variation of Time Division Multiple Access (TDMA) and is the most widely used of the three digital wireless telephone technologies (TDMA, GSM, and CDMA). GSM digitizes and compresses data, then sends it down a channel with two other streams of user data, each in its own time slot. It operates at either the 900 MHz or 1,800 MHz frequency band. GSM is the de facto wireless telephone standard in Europe. GSM has over one billion users worldwide and is available in 190 countries. Since many GSM network operators have roaming agreements with foreign operators, users can often continue to use their mobile phones when they travel to other countries.
1.6 What is PSoC Micro Controller?
When developing more complex projects, there is often a need for additional peripheral units, such as operational and instrument amplifiers, filters, timers, digital logic circuits, AD and DA convertors, etc. As a general rule, implementation of the extra peripherals brings in additional difficulties: new components take space, require additional attention during production of a printed circuit board, increase power consumption... All of these factors can significantly affect the price and development cycle of the project. The introduction of PSoC microcontrollers has made many engineers’ dream come true of having all their project needs covered in one chip.
[attachment=21940]
Abstract:
Wireless remote monitoring systems are very much essential in industrial environment where manual movement is not possible. Today several wireless technologies are used for building wireless sensor networks. Among them the GSM network is most widely deployed and used. The usage of GSM for voice communication indicates that the GSM infrastructure can give near real time responses and makes suitable for crucial industrial monitoring systems. In this project a complete remote monitoring system will be designed with two GSM modems and PSoC microcontroller. The Cypress PSoC (programmable system on chip) microcontroller being capable of programmable software and hardware becomes very much suitable for sensor interfacing. The project work consists of development of hardware with embedded software which will be deployed at the remote site and the PC based software development for GUI design and serial port communication at the monitoring center. The embedded system with PSoC Cy29466 microcontroller consists of 4 analog channels and 4 digital channels for monitoring and sending over GSM network. For demonstration one temperature sensor, one gas sensor and one smoke sensor will be connected to the microcontroller. The microcontroller communicates to the GSM using serial port link. The GSM sends the sensor data at the preprogrammed intervals, which can be set from the monitoring station. The embedded system also consists of few relays which can be controlled through monitoring station. The monitoring center consists of a computer and a GSM modem communicating over serial port. The computer consists of VC++ program for serial port communication and display of sensor data. PSoC designer software will be used for developing the embedded software and Visual studio software will be used for developing the PC software. SIM300 GSM modems will be used on both sides. AT commands will be used for communication with GSM modems.
1.1 INTRODUCTION.
What is industrial Automation
Automation or industrial automation or numerical control is the use of control systems such as computers to control industrial machinery and processes, reducing the need for human intervention.[1] In the scope of industrialization, automation is a step beyond mechanization. Whereas mechanization provided human operators with machinery to assist them with the physical requirements of work, automation greatly reduces the need for human sensory and mental requirements as well. Processes and systems can also be automated. Automation plays an increasingly important role in the global economy and in daily experience. Engineers strive to combine automated devices with mathematical and organizational tools to create complex systems for a rapidly expanding range of applications and human activities. Many roles for humans in industrial processes presently lie beyond the scope of automation. Human-level pattern recognition, language recognition, and language production ability are well beyond the capabilities of modern mechanical and computer systems. Tasks requiring subjective assessment or synthesis of complex sensory data, such as scents and sounds, as well as high-level tasks such as strategic planning, currently require human expertise. In many cases, the use of humans is more cost-effective than mechanical approaches even where automation of industrial tasks is possible. Specialised hardened computers, referred to as programmable logic controllers (PLCs), are frequently used to synchronize the flow of inputs from (physical) sensors and events with the flow of outputs to actuators and events. This leads to precisely controlled actions that permit a tight control of almost any industrial process. Human-machine interfaces (HMI) or computer human interfaces (CHI), formerly known as man-machine interfaces, are usually employed to communicate with PLCs and other computers, such as entering and monitoring temperatures or pressures for further automated control or emergency response. Service personnel who monitor and control these interfaces are often referred to as stationary engineers.[2] Industrial automation is process of controlling and guiding the industrial equipment., process and systems with less of the human intervention. The operation and control of the modern industrial equipment and process needs lot of sensors to monitor various parameters of the systems.
1.2Context of the project:
• Monitoring of the Critical sensor monitoring is very important in several industries (Nuclear plants, power plants, petroleum and gas) . This job should be done with at most accuracy and reliabley. The sensor information should be available at various locations simultaneously to take accurate decisions. This kind of requirement can be met by using the central servers and connecting the sensor networks through the controllers to the central servers.
• Most of the systems require features which are given by web server kind of architecture on wireless
– Authentication (of the person commanding)
– Port numbers for each connecting application
• but the deployment of web server is costly and complex to maintain
• Maintaining the wireless network has issues
• GSM network is readily available wireless secured network
• Growing technological research towards 3G suggests this alternative
1.3 Existing Systems:
Majority of the companies in INDIA have not implemented Automation practices in industry. Except few large industries majority of the companies can not afford to invest huge amount of money oin the existing costly setups to meet the requirements of Industrial Automation. Existing methods widely use the following technologies to communicate the in formation from one end to the other end of the company.
• Using Bluetooth
-but it is limited to short range
• Using Zigbee/ IEEE802.15.4
- Range is upto only few Kms maximum
• Using Wi-Fi
- Requires costly equipment setup.
- High cost and high power consumption
All the methods discussed above are quite expensive and complex to implement and not very reliable. The availability of information at various nodes simultaneously is not achieved.
1.4 Proposed Architecture:
In this Project an attempt has been made to develop a GSM (Global System for Mobil communication) based industrial Automation system. Using the public GSM networks, an industrial automation system has been proposed, designed, implemented and tested. The design of a stand-alone embedded system that can monitor and control various process and equipment and critical systems locally using built-in input and output peripherals is presented. Remotely, the system allows the various authorities monitoring and controlling the critical parameters via the mobile phone set by sending commands in the form of SMS messages and receiving the process status. The GSM modem provides the communication media between the Authority and the system by means of SMS messages. The system software driver is also developed using an interactive C programming language platform.
1.4.1 Basic Principle:
• Micro controller is interfaced with sensors, actuators and with GSM modem.
• PSoC controller is programmed with the default control algorithm. The sensor information processed by the controller can be rooted to the users. by power on controllers sends status SMS to predefined numbers
• User can update the control algorithm by sending an SMS.
• User can get the status and change mode also by sending SMS.
• Modem performs the operation and gives acknowledgment message to the user.
Micro controller is interfaced with sensors like Temperature, IR , Smoke sensors. The basic idea of these sensors is to monitor the parameters of various systems. For example monitoring the boiler performance in a thermal / Nuclear power plant can be done by using Temperature of the boiler. If any increase in the temperature of the system beyond the threshold has been recorded, the controller is instructed to initiate a corrective action. At the initial phase the controller will send an SMS to the authorised user. Based on the information received the user can initiate the corrective action. In the above case the temperature can be brought down by controlling the heat input. The same instruction will be initiated by the user. After receiving the corrective command, the controller will activate the necessary modules to reduce the heat input. The basic functionality of the smoke sensors is to control the parameters of the process based on the external parameters and uncontrolled combustion happening, because of the malfunction and break down of certain combustion process.
1.5 What is GSM?
GSM (Global System for Mobile communication) is a digital mobile telephone system that is widely used in Europe and other parts of the world. GSM uses a variation of Time Division Multiple Access (TDMA) and is the most widely used of the three digital wireless telephone technologies (TDMA, GSM, and CDMA). GSM digitizes and compresses data, then sends it down a channel with two other streams of user data, each in its own time slot. It operates at either the 900 MHz or 1,800 MHz frequency band. GSM is the de facto wireless telephone standard in Europe. GSM has over one billion users worldwide and is available in 190 countries. Since many GSM network operators have roaming agreements with foreign operators, users can often continue to use their mobile phones when they travel to other countries.
1.6 What is PSoC Micro Controller?
When developing more complex projects, there is often a need for additional peripheral units, such as operational and instrument amplifiers, filters, timers, digital logic circuits, AD and DA convertors, etc. As a general rule, implementation of the extra peripherals brings in additional difficulties: new components take space, require additional attention during production of a printed circuit board, increase power consumption... All of these factors can significantly affect the price and development cycle of the project. The introduction of PSoC microcontrollers has made many engineers’ dream come true of having all their project needs covered in one chip.