Wireless Sensor Network

Centre for Development of Advanced Computing (C-DAC), Bangalore Invites Expression of Interest from competent industrial partners for commercialization of Wireless Sensor Networks through Transfer of Technology (ToT)


Over many years of consistent efforts, C-DAC is today a recognized destination for multi-disciplinary Research Development and deployment of state-of-the-art technologies in Electronics and Information Technology. The broad canvas of C-DAC's Technology offerings range across several Thematic areas such as High Performance Computing & Grid Computing, Ubiquitous Computing, Multilingual Computing, Professional Electronics including VLSI & Embedded Systems, Communications and Wireless Technologies, Software Technologies including Open Source Technologies, Cyber Security, Health Informatics, and Education & Training including e-learning.

C-DAC has been in the forefront in the implementation of end-to-end solutions in various verticals of economic and social segments. The technologies developed by C-DAC have addressed key sectors such as Science and Engineering, Finance, Healthcare, Power, Steel, Agriculture, Cultural Heritage, Industrial controls, Broadcasting & Communications, Education and e-Governance.

2.0 Technology Details

Recent advances in embedded systems and mobile technologies are paving the way for the next revolution in computing, the Ubiquitous technology trends across the globe are pointing in this direction to make intelligent devices, all pervasive, and effectively invisible to the user. Ubiquitous computing has potential applications in several sectors such as healthcare, disaster mitigation and management, farmland irrigation, and thereby empowering the common man to improve the quality of life. With the increasing penetration of mobile communication and Internet, India does offer a great market for ubiquitous computing and its proliferation.

As the field of communication networks continues to evolve, a very interesting and challenging area of Wireless Sensor Networks (WSN) is rapidly coming of age. Wireless sensor networks are an attractive means to monitor environmental conditions and to bridge the gap between the physical and the digital world. Wireless Sensor Networks are highly distributed networks of small, wireless nodes deployed in large numbers to monitor the environment or a system. The nodes cooperate and collaborate on their data, which leads to accurate sensing of events in the environment. The gateway node interfaces sensor network to the external world through internet network / 3G.<

Wireless Sensor Network (WSN) Technology has been listed as one of the emerging and enabling technology with the potential to revolutionize Information and Communication Technology. Applications of WSN extend to vast and diverse areas such as the Industrial Monitoring, Building Automation, Environmental Monitoring, Disaster Response, and Precision Agriculture etc. <

We have developed Wireless Sensor Network Motes based on 802.15.4 / zigbee / Tiny OS. Zigbee is a low data rate; low power communication protocol based on IEEE 802.15.4 MAC and PHY standards. Typical, range of IEEE 802.1.5.4 based wireless module is roughly 100m. This range can be extended using multiple nodes using multi hop routing or external power amplifier.

C-DAC's WSN Product has also been incorporated into an Academic Program at a distinguished Academic and Research Institution.

System Components for Technology Transfer


Ubimote is a wireless sensor node based on IEEE802.15.4 MAC and PHY layers. This works in ISM band of frequencies i.e. 2.4 GHz to 2.485 GHz. IEEE 802.15.4 is a wireless personnel area network standard for low data rate applications. The maximum data rate supported by Ubimote is 250 Kbps. Ubimote has been certified for EMI/EMC compliance for battery operation. Ubimote is certified for IP65 compliance. The features of the Ubimote are

  • 8KB RAM and 128KB of program Flash for applications
  • USB-VCOM interface for host interface
  • Sensor interface through one 20 pin interface connector
  • Additional sensors/ expansion cards interface through two 10 pin external connectors
  • SMA connector for interfacing 2.4 GHz SMA antenna
  • 10 pin SOC debug connector for programming and debugging
  • Two debug LEDs for functional verification and testing
  • User button for user controlled application development
  • Open source application development environment with SDCC and TinyOS
  • Zigbee application development support with Z-stack


Ubi-sense is a sensor board with following sensors

  • Humidity & Temperature and Light sensors provides digital output readable through serial interface
  • Relative Humidity measurement (8 or 12bit resolution) range: 0 to 100%
  • Temperature measurement (12 or 14bit resolution) range: -40oC to 123.8oC
  • Light sensor has infrared compensation to approximate human eye response
  • Smoke sensor is made up of discrete components
  • Buzzer may be used to indicate any abnormity in any of the above measured parameters


Ubi-DAC is a data acquisition card for expanding analog and digital inputs/ outputs along with relays and excitations.

Ubimote-HR is a high range version of Ubimote where a power amplifier and low noise amplifier stage is added for additional transmission power and receiver sensitivity.

Smart mote:
Smartmote is a low power wireless sensor node based on IEEE802.15.4 MAC and PHY layers. This works in ISM band of frequencies i.e. 2.4 GHz to 2.485 GHz. The maximum data rate supported by Smartmote is 250 Kbps. The maximum outdoor range of Smartmote is 120 meters with SMA antenna. The features of Smartmote are

  • 16-bit, 16 MHz Ultra Low Power Microcontroller with 8KB RAM & 116KB Flash
  • 2.4GHz IEEE 802.15.4 compliant transceiver
  • 8Mbit Serial Flash memory for storing the golden image of the hex file
  • Options for on board PCB antenna and SMA antenna
  • 1 x 20 pin connector to interface with a daughter card with Sensors and three 10 pin I/O connectors for sensor interface
  • 8 pin customized JTAG Connector for programming and debugging
  • USB VCOM interface for programming and data transfers with Host PC
  • Hardware support for Over the Air programming.
  • Hardware support for Dynamic Voltage Scaling (DVS)
  • Power through 2xAAA / 5V DC Jack / USB Connector

This is a wireless communication module based on low power micro controller and IEEE 802.15.4 standard compliant radio. This mote is meant for porting legacy applications. SmartmoteC is enabled with Zigbee, TinyOS, and 6lowPAN for application development.

Technology Advantage
The WSN products are result of the research in Ubiquitous Computing at C-DAC Bangalore to develop indigenous Low cost Devices. These products have been developed in adherence to standards and compliance to EMI/EMC. Similar imported products costs much higher than the indigenously developed and local technical support is an added advantage. C-DAC would continue to support with advances in software and continue to improve the hardware and develop newer products and versions with the continuing research in the field of Ubiquitous computing.

3.0 Application Areas:

Smart Agriculture
Using Ubimote and wireless sensor networks it is possible to manage crop cultivation and to know the exact condition in which plants are growing from the comfort of your own home. By combining sensors such as humidity, temperature, and light, the risk of frost can be detected, possible plant diseases or watering requirements based on soil humidity, among others. This helps to control conditions in nurseries and to closely monitor high performance or delicate crops, such as vines or tropical fruit, where the slightest change in climate can affect the final outcome. All of this information can also help us to determine the optimum conditions for each crop, by comparing the figures obtained during the best harvests. Given their ease of use and scalability, wireless sensor networks can also be used to monitor isolated areas of difficult access. Ubimote detects environmental values and can store them temporarily, send them to a data processing centre for analysis or send emergency alarms. For example, depending on soil humidity it will send a message (through the ZigBee network) to stop watering, thus contributing towards efficient water management.

Animal Rearing

Installing a wireless sensor network near animals or poultry can help optimize their rearing conditions. It is possible to monitor the temperature of litters to keep it at suitable levels or even to control animals stress levels by monitoring flock restlessness with vibration and movement sensors.

Protected Natural Environments

Through a wireless sensor network deployed using Ubimote it is possible to detect and prevent forest fires. To achieve this, it is possible to use infrared or smoke sensors to detect flames, heat and gases.After installing the WSN, the network can also acquire the daily values for temperature and relative humidity in order to determine the likelihood of a fire in each zone under surveillance. After analyzing this data it is possible to send an alarm to a mobile indicating the probability level and the area, helping to focus the efforts of reserve forces more productively.

Data Centre environment monitoring system

DCEMS is a temperature and relative humidity monitoring system which runs on Zigbee protocol, collects temperature and relative humidity data from various places using Ubimotes. DCEMS graphical user interface displays a circle for each node in the network and shows their respective 16 bit network addresses and data that it sends inside that Circle. Currently DCEMS GUI supports up to sixteen nodes, means it can display up to sixteen circles to represent 16 Ubimotes in the network.


  • Collects data from Ubimotes from different places and displays whole data at one place.
  • Provision to give alternate name for each of the node in the network instead of network addresses being displayed.
  • Creates log files for each of the nodes with timestamp, temperature data, humidity data, node address and user provided alternate name.
  • Provision to set threshold temperature and humidity value.
  • Sends SMS alerts with user provided alternate name and temperature value when temperature value of a particular node exceeds threshold value.
  • When a node is out of network or removed from the network, GUI removes corresponding circle form the display. When the same node is rejoined, GUI adds corresponding circle to the display automatically with 16 bit address and data.
  • Intensifies the circle color to represent data updates form the nodes in the network.
  • Shows SMS alerts status in the web browser.

WSN development Kit (WSNDK)

WSNDK (Wireless sensor network development kit) is one of the project outcomes to encourage universities and other educational institutions in India to participate in wireless research and to encourage application development. It also facilitates development of technologies for wireless personnel area networks in low data rate, low power segment. Researchers can use the kit to further enhance the available routing algorithms as part of the network layer. It is intended for providing a practical research environment for the academic community to develop new algorithms at various levels of wireless sensor networking and to support industry for developing and experiment various applications of wireless sensor networks.

WSNDK contains three numbers of Ubimote, one Ubi-Sense board along with one CC- debugger which can be used for programming and debugging. WSNDK has been targeted as a platform for academia.

Ubimote is wireless communication module with generic sensor interface. It supports sensor interface through 20-pin expansion connector and additional sensors can be connected using two 10 pin headers on board. It uses SoC (System on Chip) with modified 8051 microcontroller core along with IEEE802.15.4 radio transceiver. IEEE 802.15.4 is wireless personnel area communication standard for low power, low data rate applications. IEEE802.15.4 defines MAC and PHY layers only. Ubimote has a generic interface for connecting sensor boards as well as expansion boards for connecting more sensors. Ubimote can be powered using batteries, DC adapter as well as using USB connector. It is user's choice to power using one of those options based on availability. TinyOS has been ported for application development. Z-stack (Zigbee Stack) has been ported and application development using it is supported.

Ubi-Sense is a generic sensor board designed with Temperature, Relative humidity, smoke detection, light intensity and buzzer. This sensor board can be used to interface with Ubimote to transfer sensed parameters wirelessly. The platform could be used to educate students about MEMS based sensing, sensor interface and applications.

CC debugger is a programming hardware and this hardware is supported by Smart RF Flash programmer free software tool from Texas instruments.

4.0 Who can apply?

  • Industries with experience in design and manufacture of consumer/medical electronics products and systems may apply for Technology partnership.
  • A Committee of experts constituted by Department of Information Technology, Govt. of India, will review the capability of the industry before finalizing the technology partners.

5.0 Instructions To Bidders For Submission of EOI

Company Profile & Financial Strength

  • Organizational:Provide a brief description of the background and organization of your firm/entity. The brief description should include ownership details, date and place of incorporation of the firm, objectives of the firm, availability of appropriate skills among staff etc.,
  • Financial: Provide the turnover and net worth of the company on the basis of the audited accounts of the previous financial year i.e., 2010-11 with audited statements/annual reports.The Startup companies with the same year of incorporation are exempted from this clause. However, financial statements till the date of EOI should be attached along with the EOI
  • Attach the following documents along with EOI

    - An expert committee for follow-up action will scrutinize the applications

    - Short listed agencies will be called for a presentation regarding their strengths and business proposals.


    Interested Organizations / Institutions may submit an Expression of Interest in the prescribed format by post to the below mentioned address

    Associate Director
    Business Development Group

    Centre for Development of Advanced Computing (C-DAC)
    (A Scientific Society of the Ministry of Communications & Information Technology, Govt. Of India)
    C-DAC, Bangalore
    No.1, Old Madras Road, Opp.HAL Aeroengine Division, Byappanahalli,
    Bangalore-560 038
    Phone Nos: 66116400/01/66166316
    Fax: 25247724 /25246356

    Click here to download the EOI format

    Click here to View the Certificates

    Click here to Download Product Brochure

    All the pages of EOI document should be duly signed and stamped by the competent authority. The completed EOI document shall be submitted in a sealed envelope super scribing "Expression of Interest for TOT of Wireless Sensor Networks" on or before the date and time of submission.

    7.0 General terms and conditions:

    - All the expenditure incurred in preparation/ submission or presentation of this EOI shall be borne by the participating agency
    - Participation in this EOI does not guarantee any association with C-DAC unless notified by C-DAC in writing.
    - C-DAC reserves the right to accept or reject any application without assigning any reasons whatsoever.
    - Any offer received after the due date and time will be rejected.
    - The industry willing to take technology for commercial exploration will be required to enter into a ToT agreement with C-DAC in the prescribed format, as per the terms and conditions approved by the competent authority in Department of Information Technology, Govt. of India