Wireless sensor node (WSN) promoting content couplet network (IoT) development respect is producing crucial effect. The advantage of WSN depends on, its power comsumption is extremely low, dimension minimum, installation is handy. the application to net of couplet of a lot of content, for example installs the application that is outdoor, WSN can use solar energy power supply. When indoor bright, system by sun's rays power supply, charge for petty button batteries or super capacitor at the same time, it is systematic power supply in order to be below the circumstance without light. Be in usually, wireless sensor node is the equipment that sensor is a foundation, be in charge of the condition such as censorial temperature, humidity or pressure. Node collects data from the sensor of any types, deliver data to arrive with wireless means next control unit, for example computer or mobile equipment, handle here, evaluate data, take action. Below good case, node can collect a mechanism to obtain exercise power supply by energy, make the equipment that runs independently. Tell from common sense, the process that energy collects is catch and changeover comes from smooth, vibration, or the process that heats up the thimbleful energy that waits for origin to be electric energy. Graph 1: Energy collects a system to design give typical examples to pursue the 1 block diagram that showed energy collects a system. Energy is collect a system by energy (like solar energy board) collect, manage integrated circuit by power source (IC) (PMIC) the energy that is changed into stability, the capacitor of reuse low leakage, low impedance stores. These the sources of energy can furnish sensor interface is laden (MCU of for example small controller) , and MCU is to use wireless means to convey the sensor of data. In this graph, energy collects sensor (EHS) it is wireless sensor node. Graph 2: Give typical examples of system of wireless sensor node pursues the 2 block diagram that showed wireless sensor node. Here, the sensor data that already processed can pass through blue tooth of low power comsumption (BLE) transmit with wireless means. BLE is the level that uses wireless applying at stone's throw, low power comsumption, in order to exchange condition or control information. BLE is in 2. Frequency band of 4 GHz ISM and binary frequency move key accuses (GFSK) run below modulation, this supports the data rate of 1 Mbps. And IC of power source management is to use stable energy to collect the result Die that equipment place asks, run in order to support what its exceed low power comsumption. Make an example, the electric current of S6AE103A PMIC parts of an apparatus uses up Saipulasi low to 280 NA, the power that start is 1. 2uW (see a picture 3) . Accordingly, making an appointment with 100 lux (Lx) in the environment of low brightness, compact model the solar battery still can be obtained a few energy. Graph 3: With the block diagram of S6AE103A PMIC parts of an apparatus that collects at energy design of efficient wireless sensor node lets us consider to devise the measure that place of wireless sensor node involves: The 1st pace: Choose hardware: In hardware respect, you need proper sensor, a MCU that can collect equipment power supply finally with energy reachs PMIC. You may need additional passive package, this is inspected design and decide. Sensor can be emulate or count glyph type. On nowadays market a lot of sensor are to use be based on integrated circuit bus line (I2C) , serial peripheral interface (SPI) or asynchronous is sent and receive transmit implement (UART) the digital sensor that the interface is a standard. The sensor with extremely small power consumption also has carry out on market. Maintain to hold facility cost low-level, the appearance is cabinet, the MCU that deserves to have integrated BLE can simplify design, shorten the time that rolls out the market. To accelerate a design further, a lot of manufacturers are used completely integrated, pass attestation completely but process designing module, surpass Pulasi for example EZ-BLE Modules. Module by brilliant of main MCU, two cake, chip or dog aerial, patulous board reach passive component to comprise. Because these module had been had must BLE attestation, the product can roll out the market quickly. Graph 4: BLE module give typical examples: Solar energy offers can CYALKIT-E02 of beacon of sensor of blue tooth of low power comsumption the 2nd pace: After design firmware and estimation power comsumption chose programmable MCU, write proper firmware namely next. The basic function that firmware needs to have is the interface that collects sensor data, with the BLE component of wireless and deferent data or stack, with the CPU that can be in charge of firmware handling. Because exceed low cost to run,be crucial, electric current uses up summation to need by bring into a consideration at the beginning. Electric current of add up to is used up is the electric current that sensor place uses up and the voltaic total that MCU spends. Because sensor won't use up too much total electric current normally, its should put the electric current that how using up MCU place to decrease to lowest mainly. Before optimizing electric current, should consider to be in MCU is immanent 3 when use up electric current main component: Module of interface of CPU, sensor (wait like I2C, SPI) with BLE subsystem. Here, when radio receiver actuate (for example BLE Tx and Rx) , main customer of electric current can be BLE report radio. Embedded MCU offers mode of all sorts of low power comsumption, use up in order to reduce electric current. Firmware designs personnel to need to consider mode of these low power comsumption and design code, such, of average electric current use up can decrease to lowest. For example, transmitting feeling data is not twinkling of fast change, between firmware need in sweep take aim transmit feeling data (for example every other 5 to 10 seconds, time-interval is inspected sensor and calm) . Of sensor already read data to pass BLE, transmit with wireless means. With respect to BLE firmware character, sensor is OK bag of broadcast of along with BLE transmits data. We suggest not to want bag of along with broadcast to transmit too much and other data, because be met so,increase electric current further. Between broadcast interval and sensor scanning interval, MCU needs to enter mode of low power comsumption, for example is " dormancy function " . Timer of low power consumption is like watchdog timer, can end in timer reciprocal when, wake up equipment. To use operation of low power comsumption, MCU undertook optimizing, offer in-house timer of a BLE, end when broadcast interval, can wake up the facility that entered dormancy function. Graph the 5 firmware flow that showed an operation. Graph 5: The firmware flow that be designed for node of efficient and wireless sensor and creates should design good firmware only, you can measure electric current. You can use prototype circuit board measures electric current. Ask an attention, of MCU start the electric current that reachs low cost mode to need independent measurement. Want you to know MCU parts to reach the time that low cost mode handles in order to start only, average electric current uses up is: Had the number of average electric current, you can multiply it with PMIC voltage, find out average power thereby. The 3rd pace optimizes firmware, utmost ground drops wear out condition of average electric current is likely, of the design power that initiative computation gives too tall, solar energy PMIC cannot support. If so, you optimize firmware with respect to need. Here has a few effective methods to execute this operation: Carry out those who optimize MCU to start code: Starting when MCU, you do not need to if 24MHz brilliant produces the high frequency and exterior clock of clock,be used, in order to operate BLE. Put out this clock at first, can managing the sources of energy. Moreover, clock crystal can use these time stability to come down, and its also are start among them a component. These clock come down gradually firmly surely, MCU can be moved again relatively to low cost mode, clock of in-house low frequency is OK equipment is waked up when clock provision is good. In short, the executive time of the code that start is OK very long, and firmware designs staff need reduces the electric current that start to use up as far as possible. A. Reduce advocate CPU runs frequency B. Before entering low power mode, control drive mode, make crural leak electricity in order to prevent MCU. C. If MCU supports any debugging interface, want to abolish them. These measure conduce reduce average electric current to use up. The 4th pace: Design hardware had the firmware that power comsumption optimizes, it is moment is based on PMIC to design hardware. Graph the 6 PMIC that showed to collect a base simply with energy are designed. Graph 6: Simple energy collects a design to store above all in PMIC solar energy arrives the equipment VSTORE1 that store (VST1) , this matter exemple is the capacitor of pottery and porcelain of F of μ of a 300- . Achieve VOUTH V when VST 1, energy can send MCU. But this simple energy collects a design cannot full day is run, the reason is to do not have backup capacitor. Let us look, how is backup capacitor added distribute PMIC equipment, how can help with capacitor MCU. Graph 7: Energy collects the energy that requires with place of WSN of backup capacitor operation to store above all in VST 1, the rest energy is used at VST 2 to charge. Offer continuously below the circumstance that stores the energy in VST 2 can have radial illuminate at doing not have grant WSN. In addition, still can join an additional button batteries arrives PMIC, in order to increase dependability, if pursue,8 are shown. Graph 8: The energy that many power source input collects PMIC to change origin of two kinds of power source, so that WSN can be below all conditions (although do not have the circumstance of lamplight) move. Changeover arises automatically, make the sources of energy supplies WSN when having need. Accordingly, this may be the properest hardware design of WSN. The 5th pace: The user interface design that designs user interface to receive wireless sensor node repeatedly can be to use WSN to transmit, in order to receive the mobile phone application of data, it is so simple. Because the data of sensor may wrap fixed position to appear in broadcast, BLE application can be designed can collect relevant data from these positions, on the mobile phone that shows data you. This kind of technology can be used at managing the intricate network that many WSNs form. CNC Milling