外文文献及翻译-蓝牙技术在工业监控系统中的应用(编辑修改稿)

外文文献及翻译-蓝牙技术在工业监控系统中的应用(编辑修改稿)内容摘要：

ore this paper chip choose C51 series. New hualong pany produce C8051F020 C51 series is the film with a is wider A paragraph, the chip main characteristics are: high speed, assembly line structure of the 8051, Compatible CIP 51, kernel (25MIPS)。 Full speed, noninvasive type (no Occupy the pieces (resources) in system testing interface (piece inside)。 64KB But in the FLASH memory systems programming, this average application The basic enough talk, capacity。 4352 (4KB + 256) bytes of piece inside RAM。 Addressable 64KB of external data memory address space Interface。 Interface is rich, have hardware realization of SPI, SMBus/the I2C and two UART serial interface。 Five mon 16 timer。 Slice watchdog timer, VDD within monitor and temperature sensors。 with When the converter inside integrated precision, and also has a certain processor inside There are two 12 D/A converter and A 8 bits A/D to turn Change device, eight of the A/D eight external input, the largest Programming sampling rate for 500ksps。 With six capture/parative module Programmable counter/timer array. 6 2 the system hardware design [12] system hardware structure This system hardware structure is simple, mainly by power supply parts, SCM development section and serial munication interface part (including sensors And bluetooth part) position, as shown in figure 1 below. power supply module parts design Based on the design of the equipment, considering the bluetooth access asher Prepare the mobility of the active power supply, power part adopts and batteries Two ways and voltage adapter using mon dc supply input is the norm Around ~ 7V between, battery is used ordinary Li batteries. because This paper USES MAX1555 to realize the battery function, this Chip has two kinds of charging mode, here is used for ac adapter electric mode, the chip no matter the circumstances in any battery can carry For standard V voltage. Meanwhile MAX8881 chip will be adopted V voltage conversion as the standard V, using MAX1615 core Slice will V voltage conversion as the standard 5V, thus to chip supply Electricity。 MAX8881 and MAX1615 to load the total is provided 230mA of current, and munication. 350mA charging electric current in adapter Or so, load average current charging electric current, the battery in less than that Use while still will be recharged. In order to enhance the power resistance equipment to dry Interference ability, design and in every level power with filtering electricity level Road to reduce external interference and the influence of preamp power. Circuit design such as Figure 2 shows. microcontroller expand part circuit design Crystals, this article designs a clock circuit by an external circuit is provided, Adopt crystal oscillator and two load capacitance, capacitance size opinion In crystal frequency and input impedance parameters. C8051F020 JTAG interface circuit: debugging or in Support online operation, carrying the download used for general 10 debugging mouth Needle JTAG interface, the interface standard with in the。