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Abstract: Simple Network Management Protocol (SNMP) is an internet standard protocol for managing devices on IP network and is one of the key components of NMS (Network management system). It is also used in a variety of application such as remote monitoring and controlling of the network nodes. Lowpan consist of large number of low-cost devices.lowpan faces several challenging issues such as small packet size, low bandwidth, low power, a large number of devices. In order to, overcome these issues, the 6lowpan was originated. The 6lowpan group has defined encapsulation and header compression mechanism that allow,ipv6 packets to be sent to and received from over lowpan based networks.6lowpan is a severely resource constrained network. Hence, existing SNMP protocol need to be modified. The 6lowpan-snmp is an extended modification of the SNMP.The SNMP is mainly used to manage a sensor node which has allocated IP address. These IP networks can be integrated with the 6lowpan by transmitting the SNMP packets over 6lowpan.this can be achieved by compressing SNMP packet and reduce the number of SNMP message over the network. This paper, tries to show effectiveness and feasibility of the proposed scheme on resource-constraint sensor network. [Copyright &y& Elsevier]

Abstract: A cold chain is a temperature controlled supply chain. The chain that brings the temperature-sensitive products from the factory to the consumer through an uninterrupted series of steps under a controlled temperature is usually called the “cold chain.” The goods follow complex logistic paths along this chain, and the final distribution often requires the use of refrigerated vehicles. While the temperature is easily controlled and monitored in the factory plants, the refrigerated vehicles can be a crucial point in the whole chain, since the products may undergo transient conditions during the loading operations or even during the whole transport process with great risk to the integrity of the goods. The refrigerated vehicles have to satisfy some thermal requirements, which are mainly related to the insulation and refrigeration capabilities, but this does not assure product integrity because of the unpredictable condition that may occur during the transportation and that could cause a significant change in the product temperature. The only reliable way of verifying the real integrity of the cold chain consists of monitoring the temperature of the products during their distribution. Application proposed in this paper deals with a wireless sensor network that has been specifically designed to monitor temperature-sensitive products during their distribution, with the aim of conforming to the cold-chain. Here sensors are placed along the cold boxes, such as product nodes communicate through a wireless channel with a base station which collects and processes the data sent by all nodes. This will continuously monitor temperature and multiple level of alert is provided in case of any undesirable condition in the product. The alert messages are forwarded to the vehicle driver and to the producer of the product. [Copyright &y& Elsevier]

Abstract: To evaluate the animal welfare, many ranchers would like to know the pressure on the animals due to the holsters and ropes. In this paper, a wireless real-time pressure monitoring system was designed based on wireless sensor network. The system consists of several pressure sensor nodes and a sink to coordinate the whole network, collect data from pressure sensor nodes and send the data to PC. An ultra-thin pressure sensor was integrated in the smart moteplatform to form the pressure sensor node. TinyOS, an open-source operating system and nesC language, an extension to C were applied for programming. In the lab test, the result of sensor calibration shows it has a good linearity and the packet delivery rate test verify that the system could operate stably and reliably in a better acceptable link quality. For better presenting to users, an information monitoring interface was used based on MATLAB as a simple demonstration of the whole system. [Copyright &y& Elsevier]