當(dāng)今世界已進(jìn)入信息時(shí)代，在利用信息的過程中，首先要解決的就是要獲取準(zhǔn)確可靠的信息，而傳感器是獲取自然和生產(chǎn)領(lǐng)域中信息的主要途徑與手段。在現(xiàn)代工業(yè)生產(chǎn)尤其是自動(dòng)化生產(chǎn)過程中，要用各種傳感器來監(jiān)視和控制生產(chǎn)過程中的各個(gè)參數(shù)，使設(shè)備工作在正常狀態(tài)或最佳狀態(tài)，并使產(chǎn)品達(dá)到最好的質(zhì)量。隨著這些系統(tǒng)能力的增強(qiáng)，傳感器的作用越來越重要。傳感器已成為自動(dòng)化系統(tǒng)和機(jī)器人技術(shù)中的關(guān)鍵部件，作為系統(tǒng)中的一個(gè)結(jié)構(gòu)組成，其重要性變得越來越明顯。
為了提高對(duì)傳感器的認(rèn)識(shí)和了解，尤其是對(duì)煙霧傳感器的深入研究以及其用法與用途，本文利用單片機(jī)結(jié)合傳感器技術(shù)而開發(fā)設(shè)計(jì)了這一煙霧監(jiān)控系統(tǒng)。
本論文以電阻式煙霧傳感器和單片機(jī)技術(shù)為核心并與其他電子技術(shù)相結(jié)合， 設(shè)計(jì)出一種技術(shù)水平較好的煙霧報(bào)警器。其中選用MQ-2型半導(dǎo)體可燃?xì)怏w敏感元件煙霧傳感器實(shí)現(xiàn)煙霧的檢測(cè)，具有靈敏度高、響應(yīng)快、抗干擾能力強(qiáng)等優(yōu)點(diǎn)，而且價(jià)格低廉，使用壽命長(zhǎng)。選用的STC12C5410AD單片機(jī)，其整合了A/D轉(zhuǎn)換、硬件乘法器、硬件脈寬調(diào)制器等資源，具有高速、低功耗、超強(qiáng)抗干擾等優(yōu)點(diǎn)，是目前同類技術(shù)中性價(jià)比較高的產(chǎn)品。
以STC12C5410AD單片機(jī)和MQ-2型半導(dǎo)體電阻式煙霧傳感器為核心設(shè)計(jì)的煙霧報(bào)警器可實(shí)現(xiàn)聲光報(bào)警、故障自診斷、濃度顯示、報(bào)警限設(shè)置、延時(shí)報(bào)警及與上位機(jī)串口通信等功能。該煙霧報(bào)警器是一種結(jié)構(gòu)簡(jiǎn)單、性能穩(wěn)定、使用方便、價(jià)格低廉、智能化的煙霧報(bào)警器，具有一定的實(shí)用價(jià)值。
關(guān)鍵詞：傳感器 ；煙霧報(bào)警器 ；STC12C5410AD單片機(jī)
ABSTRACT
The world has entered the information age, in the course of the use of information, we must first resolve is to obtain accurate and reliable information, and sensor is to obtain information in the field of natural and production of the main ways and means. In modern industrial production, especially in automated production processes, use a variety of sensors to monitor and control the various parameters of the manufacturing process, so that equipment or the best work in the normal state, and to reach the best quality products. With the enhanced capacity of these systems, sensors have become increasingly important. Sensors have become automated systems and robotics in a key component, as the system composed of a structure, its importance has become increasingly apparent.
In order to improve awareness and understanding of the sensor, especially for smoke sensor in-depth research, and its use and purpose, this paper microcomputer with the sensor technology development and design of this smoke control system.
In this thesis, smoke sensors and resistive technology as the core MCU and other electronic technology with the combination of skills to design a better smoke alarm. Which use MQ-2 combustible gas sensor type semiconductor Smoke Sensors detect smoke, have high sensitivity, fast response, the advantages of anti-interference ability, and low-cost, long life. Selected STC12C5410AD microcontroller, which integrates A / D conversion, hardware multiplier, the hardware resources such as pulse width modulator with a high speed, low power consumption, the advantages of superior anti-jamming, is similar in cost-effective high technology products.
To STC12C5410AD microcontroller and MQ-2-type semiconductor resistance type smoke sensor as the core design of the smoke alarm can achieve sound and light alarm, fault diagnosis, concentration display, alarm limit settings, delay alarm and serial communication with PC functions. The smoke alarm is a simple structure, stable performance, easy to use, inexpensive, intelligent smoke detectors, has some practical value.
Keywords：sensors ; smoke alarm ; STC12C5410AD SCM
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1.2 火災(zāi)報(bào)警器的發(fā)展趨勢(shì)••&..