Addressing circuit and addressing method of modularized photovoltaic convergence acquisition device
A collection device and addressing method technology, applied in the field of solar photovoltaic, can solve the problems of restricting the application of photovoltaic confluence collection device, and achieve the effects of fast address allocation and simple hardware structure
Active Publication Date: 2012-10-10
ACREL +1
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[0002] At present, the development of domestic photovoltaic power generation industry is in full swing, which can improve the flexibility of applications. A completely modular structural design mode is adopted for photovoltaic confluence collection devices, that is, modules such as power supply, display, confluence current collection, and auxiliary function expansion are designed into independent shells. Structure, power supply and internal data communication between modules are carried out by connecting the data bus; in actual use, it is necessary to solve the problem of automatic address allocation and address identification of multiple bus modules that are identical in hardware and software on the same bus. In addition, the response time of confluence current collection does not exceed one second, and the technical conditions of a maximum of 40 or more current inputs restrict the application of modular photovoltaic confluence collection devices.
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[0015] see figure 1 and figure 2 , the present invention relates to an addressing circuit of a modular photovoltaic confluence acquisition device, the circuit includes a plurality of confluence acquisition modules connected to the bus (subsequent function expansion modules can also be connected to the bus according to actual needs), Described confluence collection module all comprises CPU, on the basis of not changing any other circuit and connection line, uses two idle general-purpose I / O ports on the CPU of confluence collection module as automatic addressing port, defines these two The I / O ports are PO1 and PO2 respectively. The general I / O port PO1 is connected to the high-level VCC through a resistor, and the general I / O port PO2 is grounded through a resistor; port PO1 and general I / O port PO2 to achieve interconnection (such as figure 1 shown), specifically, each confluence acquisition module contains two data bus sockets, the socket structure is as follows figure ...
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The invention relates to an addressing circuit and an addressing method of a modularized photovoltaic convergence acquisition device. The addressing circuit comprises a plurality of convergence acquisition modules connected to a bus, each convergence acquisition module comprises a CPU (central processing unit), two idle and universal I / O (input / output) ports on the CPU of each convergence acquisition module serve as automatic addressing ports without changing any other circuits and connecting wires, each two I / O ports are defined as PO1 and PO2 respectively, each universal I / O port PO1 is accessed to a high-level VCC (voltage to current converter) via a resistor, each I / O port PO2 are grounded via a resistor, and interconnection between each two adjacent convergence acquisition modules are achieved by connecting one universal I / O port PO1 with one universal I / P port PO2. The addressing circuit and the addressing method of the modularized photovoltaic convergence acquisition device aresimple in hardware structure and capable of fast performing address assignment.
Description
technical field [0001] The invention relates to an addressing circuit and an addressing method of a modularized photovoltaic confluence collection device, belonging to the technical field of solar photovoltaics. Background technique [0002] At present, the domestic photovoltaic power generation industry is in full swing, which can improve the flexibility of applications. A completely modular structural design mode is adopted for photovoltaic confluence collection devices, that is, modules such as power supply, display, confluence current collection, and auxiliary function expansion are designed into independent shells. Structure, power supply and internal data communication between modules are carried out by connecting the data bus; in actual use, it is necessary to solve the problem of automatic address allocation and address identification of multiple bus modules that are identical in hardware and software on the same bus. In addition, the response time of confluence curr...
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IPC IPC(8): G05B19/04
Inventor 蔡磊李海全吴建明汤建军
Owner ACREL