Several power supply bus technologies

Powerbus Technology Powerbus is a power bus technology that is the only bus technology in the industry that can support high-power load power and high-speed communication, compared to other power-supply bus technologies: ①powerbus power supply efficiency, through the two power cord maximum can provide a single device 1 a power supply capacity, the bus can provide a maximum of 20A load capacity, no load requirements, can load the motor high-power high-powered LED devices such as interference and stable communication. The ②powerbus maximum communication rate can reach 9600bps, the maximum equipment capacity can reach 256 nodes, providing a more reliable solution for large system multi-node. ③powerbus communication distance up to 3000 meters, through the repeater can support 10KM distance or even farther, wiring non-polar, cable arbitrary layout, cable compatibility, single device damage does not affect the characteristics of the bus communication problems in the installation process of equipment to solve all kinds of communication is unreliable. Powerbus can be converted to a common serial port protocol through a dedicated chip PB331, directly compatible with the original RS485 scheme, such as modbus-rtu,dlt654 Meter protocol, cj/t 188 household metering instrument data transmission. No development risk is required.
Powerbus from many years of mature application of fire bus technology, after years of experience in engineering verification.
Power line Carrier TechnologyPowerline Communication (Power line Communication, PLC) technology refers to the use of powerline transmission of data and media signals a means of communication. The technology is to load the high frequency of the information loaded in the current and then wire the receiving information of the adapter to separate the high frequency from the current and transferred to the computer or telephone to achieve information transmission.
The full power line communication is the Power line carrier (CARRIER–PLC) communication, refers to the use of high-voltage powerline (usually referred to as 35kV and above voltage level in the field of electric carrier), Medium voltage power line (refers to 10kV voltage level) or low voltage distribution line (380/ 220V subscriber Line) as an information transmission medium for voice or data transmission of a special communication mode.
Power cat is called "Powerline Communication Modem", which is commonly known as the modem of broadband Internet via powerline. Use existing power lines and sockets in your home or office to connect PC,ADSL modems, set-top boxes, audio devices, surveillance devices, and other smart electrical devices to transfer data, voice and video. It has the features of Plug and Play, can transmit network IP digital signal through ordinary home power line.
M-busM-bus is a data bus designed specifically for the consumption of measuring instruments and counters for transmitting information. M-bus has many applications in data acquisition of buildings and industrial energy consumption.
For a remote meter reading system, the transmission of data on the bus is the end user consumption of water, electricity, gas and other important data, so the bus anti-external interference requirements are very high, to be able to resist a variety of capacitive, inductive coupling interference, all from the device and from the device and the main equipment are isolated from each other. At the same time, the network cost is relatively low, transmission line without the use of shielded cable, and to save costs, to use remote power supply to the device to provide power to minimize the use of components. To solve these real problems, we must adopt a proper bus structure.
M-bus by Dr. Paderborn University. Horst Ziegler with TI's Deutschland GmbH and Techemgmbh, the M-bus bus concept is based on the Iso-osi reference model, but M-bus is not really a network. In the OSI seven-layer network model, M-bus defines only the physical layer, the link layer, the network layer, the application layer, and because the Iso-osi Reference model does not allow the previous level to change parameters such as baud rate, address, and so on, outside the seven layer model M-bus defines a management layer, Any level can be managed without adhering to the OSI model. The M-bus bus meets the needs of the utility meter's networking and remote meter reading, and it can meet the special requirements of remote power supply or battery-powered system. The total line topology of the M-bus serial communication method is ideal for reliable, low-cost networking requirements for utility meters, and can connect up to hundreds of slave devices at distances of several kilometres.