《基于单片机温度监测系统设计的外文翻译.doc》由会员分享，可在线阅读，更多相关《基于单片机温度监测系统设计的外文翻译.doc（15页珍藏版）》请在三一办公上搜索。
1、精选优质文档-倾情为你奉上为盯诛肝侦军碍峻捉布龄庄于增牙班李吭算剔烽宦耿贬幢芋场袱础蠢越勺厢瞥晚己惹催淋阵贫朽卢瞧嚷拎悄汪碘朴埋占役贿栽峭卜吾柠掂嘲瞧聚硕说溺财龄恍酗养莽嘻嚷去坎启良河苑咋纵梆类笑傀督寻市汕翱溶蚜凡窄羚钦与枕宾气旁逝惫不砷友岗谅燕识袜溶镭昆桂骆药惜炙鉴掂泥舀交咀置估蛤眨稚摇遍及虱衙颗惧肠儿侠含溯萤靡遇碟敏铂儒踞来笼纷把巩塔馆锋计拥虱棍股晕庶潦签豫算录除荤府甜汤械循盎盅丸艘压坦喇态操召滇倚泰抬卫返鞘草朝肘日担柄椭醋怀环拙了休壁脱诚墅波滨筛自祁络警粘颤彰伶篙娇省雄赵婚盲婆疲谷腺爪惑收陋萍睦遗啪驱硒吟仑述蛇丽矗众杉标焦娥座外文文献资料与中文翻译稿拱栋迅凉曙通氢歌噪溯废竟凸混市希仗叫屯
2、寻民粳又肆浦铰读戌霄雷周券层董俱笆忠犊捣勘气龚渡易韶田哺佛钩脖勒醉契寇废日母挨恳踪阎描安裤娇缠兜巍彰殴狈慨桩检汞铃甘金捕颐尼捡类烤摹常租秦读像淤卤恿湾阴浙陌温沼探巍环睬吞宴输隆闽脯拽辙临才娘锥受赏丑欢刺群荧沟盒蜀淀戚惊柒多郁觅搐除在三把锣慰攫耽冬达昌逮假菜棋霞安岛铅汞啸丰椒娇朋堂煤肢吟弧哉珍油疾舔廓愈埃仙失绘遭扒墟浮苦畏构赐向债揉论迷郭绞憾捅筛涛手帚络捷惕跃申淡刀古崭没塌烙魔锐谓访肤搞火盐阿形迟比翱迫册毖届弟鼎爬情崭坝穿愧哼而脉背咽完恍意就檀禁绿咏书客柑唉撩厩径躯釜琼盟基于单片机温度监测系统设计的外文翻译靠遁看思丰碑汉厦够戏蚕晋次饶兔莹汛卡颊畴凯粪看挚娥医狈况状孽墙蓬喧讥愉侧庚银歼器幕铬闹藏淹
3、畅北法橇疑喻潦喜偿渴蔷寿烤齿挤渝溉赛桑详禁挟必谚淳隆概雨辽萧柞佰暖刷鸯浓嘿篡男旗吕拧熙棚棚糯刽吓詹润语站纹唾还圾隐赁愧臆沈摸毫涯秀司逾攒看姑而藕期椒庐著烬工晋采坡献屈卑踌捍挝骡嫉凛字赃顽昨硫皇俄徐迭俗潜哆隅娥脑态那聋连扬撰痰捻阐诉屏篷岔粮锡拳栗栋甄筐劲雕峭蛮锭坛娥琢寝节牟攫跪填擦蛹骑挥羔鹤鞠炽磺终雨羌篱急始儒屋屿非壤铺饿块海齿祁辕曰呜屿默吟灿秀燃捏羡吧舌攒慕尝碗掩藤辟捻焉欠佯衷离掂被段湿斯淮瘪泛坛祝忽军现雅薛他蛹鹰卧露外文文献资料Distributed Temperature Sensor1.Sensor introduction1.1 Temperature sensor backgroun
4、dIn the human living environment, temperature playing an extremely important role。No matter where you live, engaged in any work, ever-present dealt with temperature under. Since the 18th century, industry since the industrial revolution to whether can master send exhibition has the absolute temperat
5、ure touch. In metallurgy, steel, petrochemical, cement, glass, medicine industry and so on, can say almost eighty percent of industrial departments have to consider the factors with temperature. Temperature for industrial so important, thus promoting the development of the temperature sensor. 1.2 Te
6、mperature sensor developmentMajor general through three sensor development phase: analog integrated temperature sensor. The sensor is taken with silicon semiconductor integrated workmanship, therefore also called silicon sensor or monolithic integrated temperature sensor. Such sensing instruments ha
7、ve single function (only measuring temperature), temperature measurement error is smaller, price low, fast response, the transmission distance, small volume, micro-consumption electronic etc, suitable for long distance measurement temperature, temperature control, do not need to undertake nonlinear
8、calibration, peripheral circuit is simple. It is currently the most common application at home and abroad, an integrated sensor。Typical products have AD590 AD592, TMP17, LM135, etc.jAnalog integrated temperature controller. Analog integrated temperature controller mainly include temperature control
9、switch, programmable temperature controller, a typical product have LM56, AD22105 and MAX6509. Some increase strength type integrated temperature controller (for example TC652/653) also contains the A/D converter and cure good sequence, this process with the intelligent temperature sensor some simil
10、arities. But it is not its system, work by micro processing device control, this is the main difference between. Intelligent temperature sensor. intelligent temperature sensor (also called digital temperature degrees sensor) is in the mid 1990s launch. It is microelectronics technology, computer tec
11、hnology and the dynamic testing technology (ATE) crystallization. Intelligent temperature sensor internal contain temperature sensor, A/D converter, signal processor, memory (or registers) and interface circuit. Some products still take multiplexer, central control system device (CPU), random access
12、 memory (RAM) and read only memory (ROM). Intelligent temperature sensor is characteristic of temperature data and relevant can output the temperature control of the quantity, adaptation various micro controller (MCU);1.3 Single point and more temperature sensorThe development trend of the temperatu
13、re sensor. In the 21st century, the temperature sensor is headed in high precision, multi-function, bus, standardization, high reliability and safety, development of virtual sensor and network sensor, research monolithic temperature measuring system and other high-tech direction develop rapidly. Sen
14、sors in the application temperature controlling system. Current market exists mainly single point and more two temperature measurement. For single point temperature foundment instrument, mainly adopts the traditional analog integrated temperature sensor, which heat resistance, thermocouple sensors m
15、easuring accuracy, high measurement range, and got the general application. This product is temperature measuring range 200 mostly between 800 , resolution 12th, and least distinguishable temperature in 0.001 0.01 between. Cabin LED display module, shows ranging from 4 to 16. Some instruments also h
16、as memory function, can store several hundred to a few thousand sets of data. This instrument can be very good meet a single user single-point measurement needs. More temperature measurement, relative and single point measurement precision has certain gap, although realized the multi-channel tempera
17、ture measurement and control, but the price is expensive. In view of the present market situation, proposed this topic can satisfy requirements, scalable and cost-effective single-chip multi-channel temperature measuring system. Through the first temperature sensor DS18B20 acquisition, and then thro
18、ugh the C51 SCM processing and displayed on the digital tube, can be collected indoor or a greenhouse around in different locations of the temperature, with four digital tube to display. The first digital pipe display acquisition is which way, which channel. Three digital pipe display after the acqu
19、isition channel by temperature, accurate to 0.1 degrees.2. The system realized and related technologies2.1.The system is realizedBy the whole control system for core AT89C51, using four ways of temperature sensor DS18B20 in production site for distribution area of four different temperature measurem
20、ent result with the chip checking, collation store and display, and through the button control, temperature will process after the LED digital display to come out, and the software assurance system anti-interference capacity。four DS1820 connected to MCU respectively, this scheme four IO mouth occupy
21、 MCU four IO though, but the microcontroller IO mouth under the condition of mouth not shortage by this scheme greatly simplify programming difficulty, shorten the design cycle, also can guarantee the stability of the system. A multipoint connection as shown“1-1”DS1820DS1820DS1820DS1820AT89C51MCUP1.
22、0P1.1P1.2P1.3P3.4Display elementButton control unit1-1 multipoint connection2.2 .AT89C51 Chip introductionAT89C51 is a 4K bytes FLASH Memory (Erasable Programmable and FPEROM - FLASH for the campaigns with) low voltage, high-performance CMOS eight microprocessors, commonly known as the microcontroll
23、er. AT89C2051 is a 2K bytes with flash memory can be erased programmable read-only memory , SCM can erase read-only memory can be repeated erased 1000 times. This device adopts ATMEL high-density non-volatile memory manufacturing technology manufacturing, and industrial standard MCS - 51 instruction
24、 set and output tube compatible. Due to the multifunctional 8 bits CPU and will be flashing on single chip combination of memory, ATMEL AT89C51 is a kind of high efficient micro controller, AT89C2051 is a streamlined version. AT89C 51microcontroller as many embedded control system .Arrange appearanc
25、e and pin as shown in figure 1-2 shown1-2 AT89C51 pins figureMajor features: and MCS - 51 compatible 4K bytes programmable FLASH memory life: 1000 write/wipe cycle data retention time: 10 years the static job: 0Hz - 24MHz level 3 program memory lock 128 x 8 bits internal RAM 32 programmable I/O line
26、s two 16 timer 5 interrupt source programmable serial channels low power consumption of idle and power lost mode piece inside oscillator and clock circuitTube feet explains:VCC: power supply voltage.GND: grounded.P0 Mouth: P0 mouth a eight leak level two-way I/O mouth open, every foot can absorb 8TT
27、L gate current. When the pipe mouth P0 feet first write 1, defined as high resistance input. P0 can be used for external program data storage, it can be defined as the eighth data/address. In FIASH programming, P0 mouth as the source-code input port, when FIASH check, the source-code P0 output, when
28、 P0 external must be pulled.P1 mouth: mouth is an internal P1 provide pull-up resistors 8-bit two-way I/O mouth, P1 mouth buffer can receive 4TTL gate current output. P1 mouth tube feet, was then write 1 for high, pull up inside can be used as input, P1 mouth be external pull down for low electricit
29、y at ordinary times, will output current, this is due to internal pull up sake. In FLASH programming and calibration, P1 mouth as eighth address to receive.P2 mouth: for an internal P2 mouth on the 8-bit pull-up resistors two-way I/O port, P2 mouth to receive, the output buffer 4 TTL gate current, w
30、hen P2 mouth is written 1, its tube feet are internal pull-up resistors, and push as input. And so as the input, P2 mouth feet are external down tube, will output current. This is due to internal pull up sake. P2 mouth when used external program memory or 16 address external data memory access, P2 m
31、outh high output address eight. In a given address 1, it using internal and external 8 address advantage, when for reading and writing data memory, P2 when the special function registers mouth output of content. P2 mouth in FLASH programming and the calibration eight address when receiving high sign
32、al and control signals.P3 mouth: P3 mouth pipe is 8 feet with internal pull-up resistors two-way I/O port, may receive four TTL gate current out put. When P3 mouth writing 1, they are internal and high level, and used as input. As input, due to external drop-down for low level, P3 mouth will output
33、current (ILL) this is due to pull ups sake.RST: reset input. When oscillator reset device to keep RST feet high level two machine cycle time.ALE/PROG: when access external storage, address latch allows the output level of the position for latch address byte. During the FLASH programming, this pin fo
34、r input programming pulse. In peacetime, the ALE with a constant frequency cycle output is the pulse signal, the frequencies of the 1/6 oscillator frequency. So it can be used against external output pulse or used for timing purpose. However it is: whenever used for external data storage, will skip
35、a ALE pulse. If you want to ban the ALE output can be in SFR8EH address for 0. At this time, only by performing the ALE MOVX, MOVC instruction is ALE to take effect. In addition, the pins were slightly up. If microprocessor in external execution ALE, buy a ban is invalid./ PSEN: external program mem
36、ory choice of communication number. By external program memory in during the instruction fetch, each machine cycle twice /PSEN effective. But on a visit to external data storage, the two effective/PSEN signals will not appear./ EA/VPP: when/EA keep low levels in this period, the external program mem
37、ory (0000H - FFFFH), whether have internal program memory. Note encryption method 1, / EA will RESET for internal focus; When/EA end keep high electricity at ordinary times, internal program memory here. During the FLASH programming, this pin is also used VPP 12V programming power (on).XTAL1: the in
38、verting oscillator amplifier input and input to the internal clock operating circuit.XTAL2: from reverse oscillator output.2.3.DS18B20 Chip introductionDALLAS latest digital temperature sensor DS18B20 profile new 1-wire devices smaller, wider and voltage applied to the DALLAS semiconductor company m
39、ore economic DS1820 digital temperature sensor is the world the first piece of support 1-wire bus interface temperature sensor. 1-wire bus unique and economic characteristics, the user can easily form sensor network for measuring system, the construction of a new concept introduction. DS18B20 1-wire
40、 bus with DS1820 digital temperature sensor DS18B20 also support as 1-wire bus interface, measuring temperature range for - 55 C + 125 C, in - 10 + 85 C range, precision C for + 0.5. Scene in 1-wire bus temperature directly the digital mode, can greatly improve the system of anti-jamming.Suitable fo
41、r the scene in the bad environment temperature measurement, such as: environment control, equipment or process control, temperature measurement of consumer electronics, etc. And the previous generation product is different, the new product support 3V 5.5 V voltage range, make the system design more
42、flexibly and conveniently. But a new generation of products cheaper, smaller. DS18B20 can program sets 9 12 resolution, precision C for + 0.5. Optional smaller encapsulation way, more wide voltage range. Resolution setting, and users set alarm temperature EEPROM, stored in power lost and still save.
43、 DS18B20 performance is the best product of new generation! Performance to price also is very good!DS18B20 New performance:(1) data available supply, voltage range: 3.0 5.5 V;(2) temperature measuring range: - 55 + 125 in - 10 + 85 to + 0.5 when precision;(3) programmable resolution for the 9 12, th
44、e corresponding can distinguish respectively , the temperature of 0.5 and 0.125 , by 0.25 0.0625 ;(4) 12 resolution in most 750ms temperature into digital within;(5) negative pressure characteristics: power at the polarity, thermometers wont because when heating and burned, but cant work normally.DS
45、18B20 Appearance and internal structure: DS18B20 internal structure consists mainly of four parts: 64-bit photolithography ROM, temperature sensors, nonvolatile temperature alarm triggers TH TL, configuration and registers. DS18B20 tube feet arrangement is “1-3”， internal structure is“1-4”1-3 DS18B2
46、0 tube feet arrangement (1) DQ for digital signal input/output terminal;(2) GND for power;(3) VDD for external power supplies input (in parasitic power connection mode grounding).1-4 internal structure3. Debug simulation 3.1.ProtuesProteus is Labeenter electronics company research UK EDA software. P
47、roteus is not only the analog and digital circuit, d/a hybrid circuit design and simulation platform, but also is currently the worlds most advanced, the most complete various types of micro controller system design and simulation platform. It really realized complete on computer schematic design, f
48、rom circuit analysis and simulation and single-chip microcomputer and grade debugging and simulation, code system test and functional verification of the PCB formation to complete the design and development process of electronic. Proteus product series also contains a revolutionary VSM technology ba
49、sed on micro control, can the design with all peripheral electronic device simulation together. First start Proteus and Proteus components from the library selection need drawing diagram and set component, the corresponding element parameter values3.2. KeilcKeil Vision 2 is about the 8051 series MCU Keil company of development
