分布式溫度傳感器外文翻譯-其他專業(yè)(存儲(chǔ)版)
【正文】 ingle function (only measuring temperature), temperature measurement error is smaller, price low, fast response, the transmission distance, small volume, microconsumption electronic etc, suitable for long distance measurement temperature, temperature control, do not need to undertake nonlinear calibration, peripheral circuit is simple. It is currently the most mon application at home and abroad, an integrated sensor 。 life: 1000 write/wipe cycle programmable serial channels 溫度對(duì)于工業(yè)如此重要，由此推進(jìn)了溫度傳感器的發(fā)展 。能溫度傳感器 (亦稱數(shù)字溫 度傳感器 )是在 20 世紀(jì) 90 年代中期問(wèn)世的。 目前市場(chǎng)主要存在單點(diǎn)和多點(diǎn)兩種溫度測(cè)量?jī)x表。 通過(guò) 溫度傳感器 DS18B20 采集，然后通過(guò) C51 單片機(jī)處理并在數(shù)碼管上顯示，可以采集室內(nèi)或花房中四處不同位置的溫度，用四個(gè)數(shù)碼管來(lái)顯示。AT89C51 單 片機(jī)為很多 嵌入式控制系統(tǒng) 提供了一種靈活性高且價(jià)廉的方案。128 8 位內(nèi)部 RAM P0 口： P0 口為一個(gè) 8 位漏級(jí)開(kāi)路雙向 I/O 口，每腳可吸收 8TTL 門(mén)電流。并因此作為輸入時(shí)， P2 口的管腳被外部拉低，將輸出電流。 RST：復(fù)位輸入。此時(shí)， ALE 只有在執(zhí)行 MOVX， MOVC 指令是 ALE 才起作用。在 FLASH編程期間，此引腳也用于施加 12V 編程電源（ VPP）。 。 /EA/VPP ：當(dāng) /EA 保持低電平時(shí)，則 在此期間外部 程序存儲(chǔ)器（ 0000HFFFFH），不管是否有內(nèi)部程序存儲(chǔ)器。然而要注意的是：每當(dāng)用作外部數(shù)據(jù)存儲(chǔ)器時(shí)，將跳過(guò)一個(gè) ALE 脈沖。當(dāng) P3 口寫(xiě)入 “1”后，它們被內(nèi)部上拉為高電平，并用作輸入。在FLASH 編程和校驗(yàn)時(shí)， P1 口作為第八位地 址接收。片內(nèi)振蕩器和時(shí)鐘電路 第 9 頁(yè) 管腳說(shuō)明： VCC：供電電壓。全靜態(tài)工作： 0Hz24MHz 該器件采用ATMEL 高密度非易失存儲(chǔ)器制造技術(shù)制造，與工業(yè)標(biāo)準(zhǔn)的 MCS51 指令集和輸出管腳相兼容。多點(diǎn)溫度測(cè)量?jī)x表，相對(duì)與單點(diǎn) 的測(cè)量精度有一定的差距，雖然實(shí)現(xiàn)了多路溫度的測(cè)控，但價(jià)格昂貴。 進(jìn)入 21 世紀(jì)后，溫度傳感器正朝著高精度、多功能、總線標(biāo)準(zhǔn)化、高可靠 性及安全性、開(kāi)發(fā)虛擬傳感器和網(wǎng)絡(luò)傳感器、研制單片測(cè)溫系統(tǒng)等高科技的方向 迅速發(fā)展。某些增強(qiáng)型集成溫度控制器 (例如 TC652/653)中還包含了 A/D 轉(zhuǎn)換器以及固化好的程 序，這與智能溫度傳感器有某些相似之處。自 18 世紀(jì)工業(yè)革命以來(lái)，工業(yè)發(fā) 展對(duì)是否能掌握溫度有著絕對(duì)的聯(lián)系。 two 16 timer and MCS 51 patible The development trend of the temperature sensor. In the 21st century, the temperature sensor is headed in high precision, multifunction, bus, standardization, high reliability and safety, development of virtual sensor and work sensor, research monolithic temperature measuring system and other hightech direction develop rapidly. Sensors 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 measuring 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 ~ between. Cabin LED display module, shows ranging from 4 to 16. Some instruments also has memory function, can store several hundred to a few thousand sets of data. This instrument can be very good meet a single user singlepoint measurement needs. More temperature measurement, relative and single point measurement precision has certain gap, although realized the multichannel temperature measurement and control, but the price is expensive. In view of
高考資料相關(guān)推薦
鄂ICP備17016276號(hào)-1