外文翻譯--基于單片機(jī)的火災(zāi)自動(dòng)報(bào)警系統(tǒng)（英文）

1、Automatic fire a1arm system based on MCU Zhang Kun, Hu Shunbin College of Mechanical and Electrical Engineering Agricultural University of Hebei Baoding, 071001, China E-mail address:zhangkun19850218@163.com Li Jinfang B

2、aoding Baoling Transformer Co. Ltd. Tianwei Group Baoding, 071056, China E-mail address:fangzili@126.comAbstract—The paper introduced an automatic warehouse fire a1arm system based on MCU. The system was mainly made up

3、of ATmega16, temperature sensors, smoke sensors, and EX-1 auto dialed alarm module. In the system, temperature signals were transformed to serial data, and smoke signals were transformed to voltage signals. All the d

4、ata were processed by MCU. When the surveillance system checked fire in warehouse, alarm signal was turn on, meanwhile the messages were transmitted to managers through EX-1. Application of the system was convenient

5、to deal with fire in-time, efficiently by warehouse manager. Keywords- fire a1arm system; ATmega16; temperature transducer;smoke sensor I. INTRODUCTION Automatic fire alarm control system has experienced a process fro

6、m the simple to the complex and intelligence system increasingly in China. The characteristic is automatic fire detection and alarm technology has a great progress along with computing and detection technology develop

7、ment. At present, automatic fire alarm control system was used in bulk storage plant, shopping malls, high-level office buildings, hotels and other places. They were used in a number of collections focused on one ar

8、ea of intelligent alarm control method with higher levels of bus-type alarm control system, and in some residential areas and commercial buildings were installed by a single automatic fire alarm detection device. Thes

9、e alarm detection devices fail to report sometimes, or misinformation. Its reliability is not high because of using single sensor. Therefore, it is needed to develop a simple structure, low cost, high reliability, fa

10、st responding, automatic fire detection system. II. GENERAL PROJECT OF THE SYSTEM The hardware block diagram shown in Figure 1, hardware by temperature sensors, smoke sensors, signal processing module, MCU modules an

11、d automatic alarm module. Non electrical quantity that is through the sensing element sensors (smoke sensors and temperature sensors) will be on-site temperature, smoke and other non-electrical signal into an electri

12、cal signal, as well as signals for signal processing to convert analog quantity to digital quantity. Finally, the sampled data were processed and compared with the limits by MCU system. This system can produce local a

13、nd remote auto-alarm signals. Figure 1. System hardware diagram. III. THE HARDWARE COMPONENTS A. Atmega16 The system used by the U.S. Atmel’s microcontroller ATmega16 microcontroller. ATmega16 is based on the AVR RIS

14、C architecture to enhance low-power 8-bit CMOS microcontroller. Because of its advanced instruction set and a single clock cycle instruction execution time, ATmega16 data throughput of up to 1 MIPS / MHz. Thereby miti

15、gate the system in the power and the contradiction between the processing rate. ATmega16 has the following characteristics: 16K bytes in-system programmable Flash (with the ability to read and write at the same time,

16、 that is, RWW), 512 bytes EEPROM, 1K bytes SRAM, 32 general-purpose I / O port lines, 32 general-purpose working registers, for the JTAG boundary scan interface, support the on-chip debugging and programming, 3 has a

17、 more flexible mode of timer / counter (T / C), chip internal / external interrupts, programmable serial USART, there are initial conditions detector universal serial interface, 8-channel 10-bit with optional differen

18、tial input stage programmable gain (TQFP package) of the ADC, with on-chip oscillator of programmable watchdog timer, an SPI serial port, as well as six can be selected by software power-saving mode. Temperature trans

19、ducerIonizationsmoke detectorSCMauto alarmmoduleT el ephoneI nt erf acePD0signalprocessingPD12010 International Conference on Electrical and Control Engineering978-0-7695-4031-3/10 $26.00 © 2010 IEEE DOI 10.1109/iCE

20、CE.2010.133 5172010 International Conference on Electrical and Control Engineering978-0-7695-4031-3/10 $26.00 © 2010 IEEE DOI 10.1109/iCECE.2010.133 517buzzer sounded a piercing sound of an audio alarm when the dep

21、artment has a fire alarm signal-based. Figure 3. Smoke detection circuit D. Auto-dial alarm module Dial-up alarm module choices are the EX-1 dial-up module is a DTMF signal receiving, storing, and sending as integratio

22、n communications circuits. Module built-in microcontroller and dial-up management process can provide users with a variety of signal input and output ports, in security alarm, signal acquisition, automatic control, r

23、emote communication and information transmission areas such as flexible application. 5 groups can have cell phone or group of seven local telephone numbers are stored, power-down is not lost; Telephone line status de

24、tection, automatic fault signal output ;Telephone / external switching two kinds of dial-up state control; Trigger time, nine times loop dial preset numbers; To work independently, independent dial-up, do not rely on

25、telephone and other external devices. EX-1 wiring diagram shown in figure 4, The PD4 pin to connect the main chip HTO , the module began to dial alarm when PD4 output high level signal, PD5 connection ON / OFF pin inp

26、ut is high level signal to open the dial-up settings, the input does not work when this pin become low, ERR pin connected to PD6 pin of MCU, PD6 output 1 begun to test whether the telephone line failure, READY pin con

27、nect MCU PD7 pin detection and alarm is completed, the alarm is end when PD7 pin is high . Figure 4. EX-1 wiring diagram IV. SOFTWARE DESIGN Figure 5. The main program flow chart Because in the early stages of fi

28、res and the smoldering phase will produce a large number of aerosol particles and startATmega16initializewhether there aresmoke signals?YR0=1collection temperaturesignalwhether the alarm value?YR1=1Ndial-up alarmREADY=1?