外文翻譯——基于單片機(jī)的紅外防盜報(bào)警系統(tǒng)設(shè)計(jì)

1、外文原文 外文原文Based on infrared alarm technology security systems1 the introduction1.1 the research significance of this topic research situation at home and abroad .With the development of society and science and technology

2、 unceasing development, people's living standards been improved greatly, and to the private property protection means in the unceasing enhancement, the intelligent facilities for anti-theft puts forward new requirem

3、ents. This design is to meet the need of modern residential anti-theft designed family electronic alarm system. It in previous devices based on improved greatly, because use the single-chip processor signal, not only ca

4、n used for single residential area, also can be used in a large-scale residential security systems. It's the job of the performance is good, do not appear to report and misstatement phenomenon, safe and reliable.I

5、n our country, the present market condition alarm basically has triggered alarm system pressure switch electron and alarm system and pressure shading triggered alarm system, etc. Various kinds of alarm, but this several

6、 common alarm there are some shortcomings. This system USES a human pyroelectric infrared sensor in the human body detector in the flied, passive pyroelectric infrared detectors because of its low cost, easy fabrication

7、, low cost, installation is more convenient, anti-theft performance is stable and high sensitivity, safe and reliable, has attracted broad family characteristics such as popular with the customers. And alarms installati

8、on concealment, not easily by rogue found.1.2 infrared alarm technology introduction1.2.1 nature objects of the infrared radiationThe nature of any object, as long as the temperature above absolute zero (273 ℃), constan

9、tly outward issued infrared radiation, and travel at the speed of light energy. Object radiate outward infrared radiation of energy and the object of temperature and infrared radiant wavelength. Assuming objects launchi

10、ng infrared radiation of peak wavelength for a few, its temperature for T, the radiation energy equals infrared radiation of peak wavelength gerben and object product temperature T. This product is a constant, namely:T

11、he higher the temperature of the objects, emit infrared radiation of the smaller peak wavelength, send out infrared radiation energy is bigger also.1.2.2.pyroelectric effectPassive infrared detector also called pyroelec

12、tric infrared detector, its main working principle is pyroelectric effect. Pyroelectric effect means if make some strong dielectric material (such as qin batio3, qin wrong acid lead P (zT), etc.) of the Therefore, inf

13、rared intelligent anti-theft alarm system, and the specific design requirements for:(1)completes to high sensitive infrared sensor design, make its can warning of what happened real-time and accurate detection.(2) automa

14、tic alarm (automatic dial-up alarm audible and visual alarm). We design the system must have the following function module:1.passive infrared detector,2.sound-light alarm,3.telephone automatic dial-up function;4.conti

15、nued uninterrupted power supply,According to the system to complete functions, we adopt single chip microcomputer as the core of the system unit, electronic detection, intelligent control and telephone tong2.2 telephon

16、e automatic dial-up alarm circuit designIn order to simplify the whole system design process, we do not adopt MT880 chip dialing. Realization process is as follows:First in telephone storage inside put on domestic ho

17、st cell phone number or alarm call 110. From MCU pins p2.0 and p2.1 drawn two wiring connect relays, a pick telephone keyboard MianDiJian, another connect telephone keyboard keys, automatic weighing dial because the

18、 phone keypad scanning is similar microcontroller keypad scanning, so can make SCM give fitst p2.0 a signal, lets telephone h-f, then give the p2.1 a signal, let relay connected, automatic weighing dial the key a potent