Презентация UAV linear accelerometer мodule онлайн

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11 слайдов
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1,2,3,4,5,6,7,8,9,10,11
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1.29 MB
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Слайды и текст к этой презентации:

№1 слайд

Содержание слайда: UAV Linear Accelerometer Module by Natalia Cherkasova

№2 слайд

Содержание слайда:

№3 слайд

Содержание слайда: It is required to design an UAV Linear Accelerometer Module. Hardware and software must meet the next requirements: It is required to design an UAV Linear Accelerometer Module. Hardware and software must meet the next requirements: using of microcontroller PIC16F877A working in the Master-mode; approximate overall module dimensions - 150х50х50 mm; the module has to provide data polling of the digital accelerometer LSM303 on each of three axis. Exchange interface is I2C. Frequency of a clock signal in the I2C-bus is 100 kHz; the accepted data have to be send through the USART-interface to an onboard computer on-request. Data rate is 57600 bps; the module must be functional in the input voltage range from 5,5V to 12,6V at a constant current.

№4 слайд

Содержание слайда: Analysis of Technical Inquiry Functionally the device is represented by an accelerometer sensor unit, a computing block and a power source (except the onboard computer). Tasks for the computing block: 1. I2C-interface control. 2. Last received data storing. 3. Securing of data communication with the onboard computer on-request and ready-signal waiting of receiving the next byte. To solve these special tasks it is practicable to use a microcontroller PIC16F877A with a hardware implementation of I2C-interface and a possibility of receiving external interrupt signals.

№5 слайд

Содержание слайда: I2C (Inter-Integrated Circuit) is a serial protocol for two-wire interface to connect low-speed devices like microcontrollers, I/O interfaces and other similar peripherals in embedded systems. I2C (Inter-Integrated Circuit) is a serial protocol for two-wire interface to connect low-speed devices like microcontrollers, I/O interfaces and other similar peripherals in embedded systems. I2C bus is popular because it is simple to use, there can be more than one master, only upper bus speed is defined and only two wires with pull-up resistors are needed to connect almost unlimited number of I2C devices. Each slave device has a unique address. Transfer from and to master device is serial and it is split into 8-bit packets.

№6 слайд

Содержание слайда:

№7 слайд

Содержание слайда: Conclusion Program listing for microcontroller is written in C and takes 7 standard A4 sheets. Electric circuit in paper became the real model based on PIC16F877A microcontroller and LSM303 accelerometer. UAV was constructed as model aircraft (see below).

№8 слайд