Too courtyard lamp manufacturers can Yang street lamp hardware control design

2. Solar street light 1 core processing and power control by single chip microcomputer 80 c51 as the control core, using single chip microcomputer integrated AD itself, DA of the analog signal acquisition and output power control unit of output current control, and use the algorithm to realize the battery charge put



2. Solar street lamps 1 core processing and power control by single chip microcomputer 80 c51 【 C51 belongs to the MCS - 80 51 series microcontroller, developed by Intel, its structure is an extension of the 8048, improved the shortcoming of 8048, increased such as travelling by ( MUL) , in addition to ( DIV) , subtract ( SUBB) And more, CMP） , 16 bits of data pointer, Boolean algebra operations such as instruction, and serial communication ability and five interrupt source. 】 Using single chip computer as control core, its integrated AD [ The AD in the network is the abbreviation of advertising. 】 , DA of the analog signal acquisition and output power control unit of output current control, and use the algorithm to realize the charging and discharging control of battery, using the remote communication control commands, keyboard commands, to detect the state street lamps and other instructions to realize the control system. The system power control unit consists of a solar cell' Solar cell is also known as 'solar cells' or 'cell', is a kind of electricity generation by using sunlight directly photoelectric semiconductor wafer. 】 【 voltage current measurements Current is one of the basic physical quantities (measure is the ampere. A) As the unit. 】 , battery voltage and current measurement, the battery current control of power tube and multi-channel analog switch. Solar battery voltage measurement ( Voltage is refers to the electric field strength of the electric field charge movement from one point to another point of the work referred to as the voltage. 】 Realize the battery output voltage measurement, and make the sampling value to MCU AD

your span requirements; Solar cell current measurement to realize real-time monitoring of output current sampling resistor mount a series solar battery power supply circuit implementation current voltage transformation, realize the current measurement. Battery current control power GuanShan power transistor to realize the battery charging current of continuous and pulse control: multi-channel analog switch from a commonplace analog switch to achieve 4

analog input signals time-sharing connecting MCU AD input port, realize the MCU time-sharing analog signal acquisition. Power control adopts current adjustment method, by measuring the solar cell output voltage and output current and battery voltage, the current adjustment the solar cell battery charging current, making solar panels 【 Solar panels, 太阳能板) Is by absorbing sunlight, the solar radiation through the photoelectric effect or photochemical effect directly or indirectly converted into electrical energy device, the main material of most of the solar panel as the 'silicon', but because of the production cost is larger, so it widely used, we still have some limitations. 】 Charging current remain the largest state, to achieve efficient charging battery. Power control unit block diagram is shown in figure 2. 2. Part 2 light control electric sensor module, the photosensitive element using photoresistance 【 Photosensitive resistance ( 光敏电阻或光 Dependent resistor, which is abbreviated as LDR) Or light pipe ( 光电导体) , commonly used materials for cadmium sulfide, and selenium, bismuth sulfide and aluminum, lead sulfide sulfide etc. 】 On the surrounding environment light sampling, according to different as the strength of the light on photosensitive resistance 14 and generate an electric current or voltage changes, the change signal through ADC0832 【 ADC0832 is one of the national semiconductor production 8-bit resolution, dual channel A/D conversion chip. 】