A method of constructing codes with a low jump rate, called bit-blockcode (BBC), is presented. The BBC has the structure of BBC, in which bits constitute a block and blocks form codes. Each bit of a block has no weight and each block has weight determined completely by its position in the circuit. The modular design for the BBC generator is also proposed where blocks are basic units of the BBC generator. The generation circuit has the characteristics of being simple, modular, and extensible. The BBC can be used as test vectors to reduce the power consumption of the circuit under test, and it can also be exploited as a code for general purposes.
Power distribution room is the key position of the power supply system, it is very important to monitor power distribution room and real time warning in order to ensure the normal power supply. A design of a detection system based on Zig Bee wireless sensor network, the hardware based on CC2530, software development based on Zig Bee. Designing a novel microstrip antenna because of the harmonic interference of power distribution room and serious reflection of equipment. The antenna has the characteristics of good omnidirectional, small echo loss, high gain, small volume etc. Experiments show that it can real time monitor every node which can effectively transmit and receive data.
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