Development trend of intelligent distribution box

With the development of science and technology, more humanized and intelligent distribution box and other equipment are injected. According to the electrical wiring, the switchgear, measuring instruments, protective electrical appliances and auxiliary equipment are required to be assembled in closed or semi enclosed metal cabinet or on the screen to form a low-voltage distribution box. In normal operation, the circuit can be connected or disconnected by manual or automatic switch. The power distribution cabinet distributes the electric energy of a circuit of the upper power distribution equipment to the nearest load. This equipment shall provide protection, monitoring and control of the load. The power cabinet is a combination of electrical control cabinets that provide power for the normal operation of the whole machine, including fuses, circuit breakers, contactors, frequency converters, high-voltage cabinets, transformers, etc. The prospect of civil distribution box, which can be combined with computer technology and network communication technology, has gradually become digital, integrated and intelligent. 3.1 numbers

At present, DSP chips produced by three major companies are mainly used in China's market, including Ti, ADI and Motorola. The chip technologies they can manufacture have their own advantages and disadvantages, and the application research scope is also different. Among them, the TMS series chips developed and produced by TI company have been widely used. TMS series chip has remarkable advantages: excellent architecture design, no matter in terms of mathematical computing ability of students, we are also a data analysis mobile learning; event response working time is very short, real-time management operation control system theory supports the society to provide response time less than 10ns, and is equipped with special instructions for complex single cycle processing In addition, the deterministic processing can choose to use the cache, and arrange the relevant data as the movement through DMA, which occupies less public space and is efficient.

3.2 integration

As mentioned above, the current smart distribution box has the following main disadvantages: small amount of measurement data, low accuracy, large volume occupation, and limited integration. Programmable ASIC technology has been developed since 1990s. It can process ASIC devices in parallel and has strong flexibility. It can solve the short board of intelligent distribution box. ASIC software can be integrated in the interior, and has a certain degree of modular design. Therefore, ASIC performs well in terms of volume reduction, operational reliability, and running speed. Recently, TI company launched DSPs, which is more and more widely used in industry, agriculture, life and other fields.

3.3 intelligence

With the development of modern communication technology and computer network technology, with the development and improvement of fieldbus control technology and digital technology, network and information technology have penetrated into people's life, and intelligent distribution box distribution network terminal has become more and more important. Intelligent distribution box can not only realize human-computer interaction, but also intelligently cut off dangerous lines and switch on intelligently. In the future design, there will be remote control, intelligent alarm and other functions.