基于can總線的樓宇溫度控制系統(tǒng)設(shè)計(jì) 外文原文及翻譯

1、<p>　　本科生畢業(yè)設(shè)計(jì) (論文)</p><p><b>　　外 文 翻 譯</b></p><p>　密 級(jí)</p><p>　分類號(hào)</p><p>　編 號(hào)</p><p>　成 績(jī)</p><p>　　注：1。 指導(dǎo)教師對(duì)譯文進(jìn)行評(píng)閱時(shí)應(yīng)注意以下

2、幾個(gè)方面：①翻譯的外文文獻(xiàn)與畢業(yè)設(shè)計(jì)（論文）的主題是否高度相關(guān)，并作為外文參考文獻(xiàn)列入畢業(yè)設(shè)計(jì)（論文）的參考文獻(xiàn)；②翻譯的外文文獻(xiàn)字?jǐn)?shù)是否達(dá)到規(guī)定數(shù)量（3 000字以上）；③譯文語(yǔ)言是否準(zhǔn)確、通順、具有參考價(jià)值。</p><p>　　2。 外文原文應(yīng)以附件的方式置于譯文之后。</p><p>　　Distributed Building Temperature Control System

3、 Based on CAN Bus</p><p><b>　　Abstract</b></p><p>　　This paper proposed a kind of distributed buildingtemperature control system based on CAN Bus, and has produced the system of har

4、dware structure design, the software design, can examine the building temperature and control the exceptional on the real-time, be indicated through experiment that system is reliable and save energy. </p><p&g

5、t;　　Key-Words:- temperature control；CAN Bus；energy saving </p><p>　　1 Introduction </p><p>　　Gradually climbs along with the temperature, electric power industry welcomed has used electricity on

6、ce a year most seasons: The electric power welcomes a peak summer. Since 2003, the power supplied has become more and more serious in china. And more and more people appeal for building energy conservation. Air condition

7、ing’s energy conservation is one of the most important components of building energy conservation[1]. </p><p>　　Many public buildings air conditioning is one of highest energy consumption sources in China. T

8、ake Beijing as the example, in 2005, although the Beijing large-scale public building only accounts for the whole city civil construction total area 5.4%, but whole year the total power consumption actually achieved 3.3

9、billion kilowatts[2], approach all inhabitants to live use electricity one half, according to the preliminary understanding, Beijing's public building generally can achieved to energy s</p><p>　　2 The pr

10、inciple of system structure and hardware design </p><p>　　Regarding the different building, its internal room distributes and constructs is different, in order to realize the system construct conveniently, t

11、he system uses the distributional structure, Based on the SJA1000 CAN communications platform in order to realize various pitch points reliable communication; In this foundation, the console set each pitch point temperat

12、ure value setting for every room, and realize the entire building temperature real-time examination, by the LCD demonstration exami</p><p>　　2.1 The console hardware design </p><p>　　The AT89C52

13、 MCU is the primarily controller in console, It connects with the warning module, the memory module, the clock/calendar electric circuit and the keyboard module. its structure drawing see Figure 2. </p><p>　

14、　The control pitch point also is controlled by the MCU, connected temperature examination module and the CAN Bus interface module. The system has used the AT89S52, it is a section low power chip that is produced by ATMEL

15、 Corporation, has 4 KB in-system programmable (ISP) FLASH memory integrated. The scene programming debugging and the system function changing is much conveniently flexible, using AT89S52 to take the system the master con

16、troller. When system normal work. The console send a definite</p><p>　　2.2 The CAN Bus interface design </p><p>　　The CAN Bus corresponds high as 1 Mb/ s, the most long-distance range may reach

17、10 km; The CAN Bus corresponds using the short frame structure, spends the data transmission time shortly, so the probability which disturbed is low, and the CAN Bus has good error detecting measures, therefore its relia

18、bility is high. In the CAN Bus network each pitch point has an address, any pitch point theoretically can be increased, deleted in the network based on CAN Bus. In the practical application, the CAN B</p><p>

19、;　　The pitch point core component is CAN controller SJA1000 which is PHILIPS Corporation produced and CAN driver PCA82C250[3]. SJA1000 is the integrated independent CAN controller (is completely compatible with PHILIPS e

20、arly CAN controller PCA82C200). It responsibly completes the CAN Bus correspondence protocol function of the physical layer and the data link layer. SJA1000 internal has the control register, orders the register, the con

21、dition register, the interrupt register and receives, sends the</p><p>　　2.3 The pitch point hardware design </p><p>　　The pitch point mainly includes the CAN Bus interface, the control module o

22、f the air gate of air-conditioning system and temperature sensor DS18B20, the system structure like figure 3 shows. </p><p>　　The DS18B20 is DALLAS Semiconductor Corporation's newest 1-Wire Bus digital t

23、emperature sensor[5]. Its volume is smaller, suitable voltage is wider, and more economical. 1-Wire Bus is unique moreover the economical characteristic. The user can set up the sensor network with ease. The 1-Wire Bus d

24、irectly transmits scene digital temperature and greatly enhanced the system anti-disturbance ability. It supports the voltage of 3V~5.5V. So the system can be designed nimbly and conveniently. The ROM in</p><p

25、>　　According to DALLAS Semiconductor Corporation's material, on each 1-Wire Bus can connect mostly 248 1 - WIRE components [5]. But we discovered. It was not so in practical. When one 1-Wire Bus meets more than 8

26、DS18B20 sensors, the system must to solve the question that MCU drive 1-Wire Bus, otherwise the MCU cannot correctly read and write to DS18B20 through 1-Wire Bus. Simultaneously the fastest 1-Wire Bus length which connec

27、t DS18B20 sensor in system is also limited. In full-scale test, when u</p><p>　　3 The system software design </p><p>　　In this system, the software design mainly includes two parts : The console

28、 software design and pitch point software designs. The figure 4 shows console software structure. </p><p>　　3.1 The console software design </p><p>　　The console software divides for the initia

29、lization module and the host scheduling program module In general. The initialization module is executed only power on or reset. The host scheduling program module includes CAN information frame processing processor, key

30、 processing processor, the LCD processing and warring processor, and so on data and time processing processor, interrupt control processor. </p><p>　　The host scheduling program module is responsible to mana

31、ge the processors running. When the event occurred, the processors do it will be activated and executed, otherwise the processor will be jumped. </p><p>　　The system initialization module establishes the sys

32、tem’s operating environment, including CAN interface initialization, clock chip initialization and so on. The key processor is handle to the key pressed and keyboard input. The CAN information frame processing module rea

33、lizes the console and between each pitch point communication agreement using the CAN Bus. The LCD and warring processes is handle to delivers the data to the LCD display and control warring circuit to alarm according to

34、the data</p><p>　　3.2 The pitch point software design </p><p>　　The pitch point receives the data frame from console through the CAN Bus. From these data frame the pitch point obtains each room

35、temperature limit which control. The pitch point reads temperature value through the temperature sensor DS18B20 in each room. Comparing with this room temperature limit value, the pitch point will control the gate of air

36、-conditioning system if the value surpass the limit value, And report the room number and the temperature value through the CAN Bus to the console. Ac</p><p>　　4 Conclusion </p><p>　　After the f

37、ield test, this system can realize the building temperature examination and control </p><p>　　effectively.And this system can be applied to other equipments testing and control in order to realize building i

38、ntelligent management. While CAN bus is an effective support for distributed industrial control serial communication network, the system can also be widely applied to other needs real-time multi-point measurement and con

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