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This paper presents a current sensor for the 16 series Li-ion battery cells. In order to detect the large current of 3.0 A at 57.6 V charging voltage and avoid the gate oxide overdrive problem, the feedback control loop with two source followers and the single stage differential amplifier are used. The proposed design is implemented using a typical 0.25 μm 1P3M 60V BCD process. The sensing current...
Single Frequency Network(SFN) transmission mode in Long Term Evolution(LTE) can be used to deliver Multimedia Broadcast Multicast Service(MBMS) business in the form of sharing wireless resources. It has negative effect on the spectral efficiency while the allocation of resources in SFN mode refers to the worst signal user. This paper introduces a novel transmission mode named Mixture Mode(MIX) for...
Integrating information network into power system is the key for realizing the vision of smart grid, but also introduces many security problems. Wireless communication offers the benefits of low cost, rapid deployment, shared communication medium, and mobility; at the same time, it causes many security and privacy challenges. In this paper, the concept of dynamic secret is applied to design an encryption...
For the wireless sensor network (WSN) to operate successfully, a critical issue is to provide sufficient sensing coverage. In this paper, we target on smart environments and deal with both the homogeneous (having identical sensing radius) and heterogeneous sensors (having different sensing ranges) equipped with locomotion facilities to assist in the sensor self-deployment. An enhanced virtual forces...
In this demo, a cyber-physical monitoring system (CPMS) is developed to detect smart meter intrusion and bad data injection attacks. The basic idea of CPMS is based on the information fusion of cyber incidents and physical measurements. Snort is applied to monitor the traffic on all smart meters; and energy conservation is used to check the consistency of the meter readings. The experiments demonstrate...
Numerous devices in smart grids are deployed at millions of buildings and streets, connected with wireless network and applied the uniform public protocols and standards. It indicates high-risk threats on the privacy and security of smart grids wireless communication. In this paper, two attack scenarios are presented to show the vulnerability of smart grids, and a new encryption method based on dynamic...
By baseline define & variance test of process variance that can show to engineer whether the process is stable or not. Furthermore the root cause can be found more quickly and improved. — and find out the root cause more quickly
Model Verification and Conclusion After verifying the detection efficient of the multi-product control chart, we conclude as follows: ∗ The effective detection ability The abnormal processes of tradition control chart detecting are also alarmed by multi-product control chart. In addition, the multi-product control chart also detects the additional abnormal shift issue, for example Product 2 and Product...
The scour is one of the major causes for bridge failure. Scour failure occurs suddenly without prior warning or sign of distress to the bridge. However, there are many challenges to monitor the processes of hydraulic scour, such as measuring equipments are essentially critical, especially during the floods. This paper presents an in-situ scour monitoring system by using the novel mobile wireless technology...
The development of earth observation technology has changed the way to obtain eco-environmental information. Through remote sensing images, we can access to various kinds of environmental information about large areas dynamic and rapidly. However, with the expansion of eco-environmental information, the data itself has become the bottleneck for its further use because of its massive and closed nature,...
This paper presents a novel Trojan detection and defense system. The prototype searches the important files which contain users' confidential information on the disk. And then, these files will be monitored to find which processes will access them by capturing and analyzing the IRPs (I/O request packets). The processes of Trojans will be distinguished from regular ones by evaluating their API-calls...
The widely spread of wireless communication and networking have deeply impacted on the daily life environment of Taiwan. Nowadays, the EMF situation is concerned more and more. The protestations against the RF sources arc well seen in daily news. On the other hand, many organizations; such as airport, gas station, hospital,... etc; which as well concern the widespread of EMF. This research developed...
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