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The DS-18B20 number temperature spreads a feeling machineThe DS-18B20 number temperature spreads a feeling machine, the product adoptions United States DALLAS company produces of DS18 B20 can set net number the temperature spread the feeling machine chip to pack but become and have to bear to whet to bear to touch, the physical volume is small, use convenience, seal to pack a form diverse, be applicable to various narrow and small space equipments number to measure moderate control realm.1、the technique function describe:1.1 special single lines connect a peoples method, DS18 B20 while linking with microprocessor only need a line can immediately carry out the double of microprocessor and DS18 B20 toward the communication.1.2 measure scope-55 +125 , proper measure resolutions 0.5 .1.3 support several set nets function, several DS18 B20s can merge at unique three on-line, the most can merge 8, if amount was excessive, it would make power supply the power electric voltage over low, result in thus the signal delivers of unsteady, the realizations order to measure more1.4 work the power:35V|DC1.5 dont need any outer circle component in the use1.6 measure the result measure a way string with 912 numbers line transmission1.7 stainless steels protect to take care of diameter 61.8 be applicable to DN1525, DN 40 DN250 various equipments that lie industrial piping of quality and narrow and small space measure1.9 standards install the thread M10 X1, M12 X1.5, the G 1|2 term chooses1.10 PVC electric cable direct the line or virtuous type ball type connect line box line, the easy to and other electric appliances equipments links.2、Application2.1 products are applicable to cold storage, food Cang, keep a bottle, tele-communications engine room, electric power engine room, cable slot etc. measures moderate control realm2.2 stalk tiles, urn body, the Fang machine, the air condition, waits industrial equipments of narrow and small space to measure a moderate control.2.3 car air condition, refrigerator, cold cabinet, and medium low temperature dry box of etc.s.2.4 provide hot|make cold piping calories to calculate, the central air condition divides a thermal energy to calculate to measure a moderate control with industrial realm3、Product model number and specificationThe model number measures scope to install thread electric cable length to apply pipingThe B20 -55125s TS-18s have no 1.5 msTS-18B20A -55125 M10X1 1.5m DN1525The B20 TS-181|s Bs-55125ses 2 Gs connects line box DN40 604、Connect line elucidationThe characteristics special front line connects, needs a line to correspond by letter to order more ability and simplified a distribute type the temperature spread the feeling application didnt need an external component to use data total line power supply, the electric voltage scope has never needed to provide for use the power diagraph temperature scope for the 3.0-5.5 Vs BE-55 to+125 .The Fahrenheit is equal hence-67-257 Fahrenheit degree-10 go to+85 accuracy inside the scope is 0.5 The temperature spreads a feeling machines programmable resolution to convert into 12 number formats for 912 temperatures biggest be worth to 750 a milli- of second the customer can define of not and easily lose sex temperature to report to the police to establish an application to include a constant temperature control, industrial system, consume electronics product thermometer, or any hot sensitive systemThe number thermometer that describes the DS18 B20 provides 9-12(the programmable equipments temperature read a number.The information is disheveled hair to send to|connect through a line from the DS18 B20, so central microprocessor and DS18 B20 only have a per line conjunction.For read and write and the temperature conversion can acquire energy from the data line, dont need to circumscribe the power.Because each DS18 B20 includes a special ordinal number, several ds 18 bs 20 seses can be existed to a total line at the same time.This makes the temperature spread a feeling machine to place in many different places.Its use is a lot of, include an air condition environment control, detect equipments inside the building or machine, and carry on process monitor and control.The DS18 B20 internal structure mainly constitutes tofrom the four-part cent:64 temperatures that only engrave ROM and temperature to spread a feeling machine and dont vaporize report to the police to trigger a machine TH and TL and allocation to deposit a machine.While equiping signal line Gao, the internal capacitor stores an energy from a line and corresponds by letter circuit to the film power supply, and at low electricity even period for film power supply until next Gao Dian Pings arrival re- refreshes.The power of the DS18 B20 can also.5V electric voltages get from 3 Vs-5s in the exterior.The DS18 B20 adopts front line correspondence to connect.Because the front line correspondence connects, have to previously complete ROM enactment, otherwise memory and control function will can not use.Mainly provide following function to orderany first of a:1)read ROM2)ROM match3)search ROM4)jump ROM5)report to the police a check.These instruction operation the function has no 64 sequences that only engrave ROM of a spare part, can be hanging several spare parts on the front line to make selection a certain spare part, at the same time, the total line can also know always on-line hang how much, what kind of equipments.If the instruction successfully makes the DS18 B20 completion temperature measure, the data saves in the saving machine of DS18 B20.The performance of a control function conductor designation DS18 B20 measures.Measure result will be placed in the DS18 B20 memorieses, and can let reading to send out the conductor of remembering the function, reading contents of slice ascend saving machine.The temperature reports to the police to trigger machine TH and TLs to all have one word stanza EEPROM data.If DS18 B20 not the use report to the police to check instruction, these deposit a machine to be a general customer to remember use.Still carry to there is allocation words the stanza converting by ideal solution temperature number on the slice.Write TH, TL instruction and allocation word stanza makes use of instruction completion that remembers function.Pass to slowly save a machine to read to deposit a machine.All datas read writing all a beginning from the lowest.The DS18 B20 has 4 main data partses:(1)only engrave 64 sequences in ROM are what factory front be only engraved likes, it can see make the address sequence that is the DS18 B20 code.64 alignments that only engrave ROM are:Starting 8(28 Hs) is the product type mark number, immediately after of 48 sequences that is the DS18 B20 oneselfses, last 8 is 56 front circulating redundancy schools to check code.(CRC=X 8+ Xs 5+ Xs 4+s 1)The function that only engraves ROM is to make each DS18 B20 all each not same, so can carry out a purpose that is always on-line to hang to connect several DS18 B20s.(2) the temperature in the DS18 B20 spread a feeling machine to complete the diagraph to the temperature and take 12 conversions as an example:The binary system expanding with 16 signs repairs code to read to count a form to provide, with 0.0625 |the LSB form express, among them, the S is a sign.The saving machine of DS18 B20 includes high speed to temporary save machine RAM and can give or get an electric shock to wipe in addition to RAM, can give or get an electric shock to wipe in addition to RAM includes temperature to trigger machine TH and TL again, and an allocation deposits a machine.Saving machine ability the integrity really settle the communication of front-line port, the number starts using to write the order of depositing the machine to write into deposit a machine, immediately after can also use order of reading to deposit the machine to confirm these numbers.After confirming can use the order that the replication deposits a machine can give or get an electric shock to wipe to transfering these numbers to in addition to RAM in.While once modifying to deposit the number in the machine, this process can ensure the integrity of number.The high speed temporary saves machine RAM to constitute tofrom the saving machine of 8 word stanzas;The first and the second word stanza are temperatures to show.The fourth Sha-ho word stanza is to make duplicate TH and TL, at the same time the fourth Sha-ho number of word stanza can renew;The fifth word stanza is to make duplicate allocation to deposit a machine, the fifth number of word stanza can renew at the same time;6, 7, 8, three word stanzas are calculator oneselfs use.Using reads that the order that deposit a machine can read the ninth word stanza, this word stanza is eight word stanzas to the front to carry on schools to check.648 ex- oneself codes that is a DS18 B20 that only engrave ROM, next 48 are a continuous number code, 8 of end is to 56 ex- of the CRC schools check.64-the light of engrave ROM and include the function order of 5 ROMs:Read ROM, match ROM, jump up ROM, check to seek ROM and report to the police to check to seek.The DS18 B20 can use external power VDD as well as use the power in the living on of inner part.When the VDD port connects the electric voltage with 3.0 Vs Vs-5.5ses is use external power;When the VDD port connects ground used the power in the living on of inner part.No matter is an inner part to live on the power or an external power supply, I|the O line want to connect a 5 K to or soly and up pull electric resistance.Allocations depositing a machine is the conversion that installs different number to make sure temperature and number.R1, the R0 is the decision of temperature, from the R1, the different combination of R0 can install for 9, 10, 11, 12 temperatures show.So can know a different temperature conversion to should of conversion time, four kinds of resolutions of allocations distinguish to 0.5 , 0.25 , 0.125 and 0.0625 , factory take installing as 12.DS18 B20 at factory with install for 12, read temperature totally read 16, so the empress is 112 enter make to convert into 10 enter make after at multiply 0.0625 is then measure of temperature, also need to be judged plus or minus.Front 5 piece words are signs, current 5 is 1:00, read of temperature is minus quantity;5 is 0:00, read at present of temperature is plus quantity.16 numbers put from low to Gao Wei.The instruction agrees on code operating instructions:The temperature converts the 44 H start DS18 B20 to carry on a temperature conversionRead to temporary save machine BEH to read to temporary save machine 9 word stanza contentsesWrite temporary and save the machine 4 EHs to write in a data temporary TH of saving the machine and TL word stanzaThe replication temporary saves the machine 48 Hs temporary save the TH of machine and TL word stanza to write E2 RAMRe- adjust the E2 RAM B8s Hs write the E2 TH within RAMs and TL word stanza to arrive to temporary save machine TH and TL word stanza and read that the signal that the B4 H start DS18 B20 of the power supply method sends out the power supply method gives lord CPUThe beginning of DS18 B20 starts to turn.(1) place data line first Gao Dian Ping1.(2) postpone(what the time request isnt very strict, but possibly a little bit shorter)(3) the data line pull a low electricity even0.(4) postpone 750.(the horary time scope can from 480-960)(5) the data line pull Gao Dian Ping1.(6) wait for while postponing(if is early to start to become an achievement then in 15-60 time inside produce a low electricity that is returned by the DS18 B20 even0.Can make sure its existence according to the status, but should notice can not be infinitely carry on waiting for, otherwise will make procedure get into to die circulating, so control while wanting to carry on to be super).(7) if CPU read the data is on-line low to give or get an electric shock even0 after, while also needing to do to postpone time for it to postpones from send out of Gao Dian Ping start to calculate to at least want 480.(8) pull data line again Gao Dao Gao to end after giving or getting an electric shock is even1.DS-18B20 數(shù)字溫度傳感器 DS-18B20數(shù)字溫度傳感器,該產(chǎn)品采用美國DALLAS公司生產(chǎn)的 DS18B20可組網(wǎng)數(shù)字溫度傳感器芯片封裝而成,具有耐磨耐碰,體積小,使用方便,封裝形式多樣,適用于各種狹小空間設(shè)備數(shù)字測溫和控制領(lǐng)域。1、技術(shù)性能描述:1.1 獨(dú)特的單線接口方式,DS18B20在與微處理器連接時(shí)僅需要一條口線即可實(shí)現(xiàn)微處理器與DS18B20的雙向通訊。1.2 測溫范圍 55125,固有測溫分辨率0.5。1.3 支持多點(diǎn)組網(wǎng)功能,多個(gè)DS18B20可以并聯(lián)在唯一的三線上,最多只能并聯(lián)8個(gè),如果數(shù)量過多,會使供電電源電壓過低,從而造成信號傳輸?shù)牟环€(wěn)定,實(shí)現(xiàn)多點(diǎn)測溫1.4 工作電源: 35V/DC1.5 在使用中不需要任何外圍元件1.6 測量結(jié)果以912位數(shù)字量方式串行傳送1.7 不銹鋼保護(hù)管直徑 6 1.8 適用于DN1525, DN40DN250各種介質(zhì)工業(yè)管道和狹小空間設(shè)備測溫1.9 標(biāo)準(zhǔn)安裝螺紋 M10X1, M12X1.5, G1/2任選1.10 PVC電纜直接出線或德式球型接線盒出線,便于與其它電器設(shè)備連接。2、應(yīng)用范圍:2.1 該產(chǎn)品適用于冷凍庫,糧倉,儲罐,電訊機(jī)房,電力機(jī)房,電纜線槽等測溫和控制領(lǐng)域2.2 軸瓦,缸體,紡機(jī),空調(diào),等狹小空間工業(yè)設(shè)備測溫和控制。2.3 汽車空調(diào)、冰箱、冷柜、以及中低溫干燥箱等。2.4 供熱/制冷管道熱量計(jì)量,中央空調(diào)分戶熱能計(jì)量和工業(yè)領(lǐng)域測溫和控制3、產(chǎn)品型號與規(guī)格:型 號 測溫范圍 安裝螺紋 電纜長度 適用管道TS-18B20 -55125 無 1.5 m TS-18B20A -55125 M10X1 1.5m DN1525TS-18B20B -55125 1/2G 接線盒 DN40 604、接線說明:特點(diǎn):獨(dú)特的一線接口,只需要一條口線通信 多點(diǎn)能力,簡化了分布式溫度傳感應(yīng)用 無需外部元件 可用數(shù)據(jù)總線供電,電壓范圍為3.0 V至5.5 V 無需備用電源 測量溫度范圍為-55至+125 。華氏相當(dāng)于是-67到257華氏度 -10至+85范圍內(nèi)精度為0.5溫度傳感器可編程的分辨率為912位 溫度轉(zhuǎn)換為12位數(shù)字格式最大值為750毫秒 用戶可定義的非易失性溫度報(bào)警設(shè)置 應(yīng)用范圍包括恒溫控制,工業(yè)系統(tǒng),消費(fèi)電子產(chǎn)品溫度計(jì),或任何熱敏感系統(tǒng)描述該DS18B20的數(shù)字溫度計(jì)提供9至12位(可編程設(shè)備溫度讀數(shù)。信息被發(fā)送到/從DS18B20 通過1線接口,所以中央微處理器與DS18B20只有一個(gè)一條口線連接。為讀寫以及溫度轉(zhuǎn)換可以從數(shù)據(jù)線本身獲得能量,不需要外接電源。 因?yàn)槊恳粋€(gè)DS18B20的包含一個(gè)獨(dú)特的序號,多個(gè)ds18b20s可以同時(shí)存在于一條總線。這使得溫度傳感器放置在許多不同的地方。它的用途很多,包括空調(diào)環(huán)境控制,感測建筑物內(nèi)溫設(shè)備或機(jī)器,并進(jìn)行過程監(jiān)測和控制。DS18B20內(nèi)部結(jié)構(gòu)主要由四部分組成:64位光刻ROM、溫度傳感器、非揮發(fā)的溫度報(bào)警觸發(fā)器TH和TL、配置寄存器。該裝置信號線高的時(shí)候,內(nèi)部電容器 儲存能量通由1線通信線路給片子供電,而且在低電平期間為片子供電直至下一個(gè)高電平的到來重新充電。 DS18B20的電源也可以從外部3V-5 .5V的電壓得到。DS18B20采用一線通信接口。因?yàn)橐痪€通信接口,必須在先完成ROM設(shè)定,否則記憶和控制功能將無法使用。主要首先提供以下功能命令之一:1)讀ROM2)ROM匹配 3)搜索ROM4)跳過ROM5)報(bào)警檢查。這些指令操作作用在沒有一個(gè)器件的64位光刻ROM序列號,可以在掛在一線上多個(gè)器件選定某一個(gè)器件,同時(shí),總線也可以知道總線上掛有多少,什么樣的設(shè)備。若指令成功地使DS18B20完成溫度測量,數(shù)據(jù)存儲在DS18B20的存儲器。一個(gè)控制功能指揮指示DS18B20的演出測溫。測量結(jié)果將被放置在DS18B20內(nèi)存中,并可以讓閱讀發(fā)出記憶功能的指揮,閱讀內(nèi)容的片上存儲器。溫度報(bào)警觸發(fā)器TH和TL都有一字節(jié)EEPROM 的數(shù)據(jù)。如果DS18B20不使用報(bào)警檢查指令,這些寄存器可作為一般的用戶記憶用途。在片上還載有配置字節(jié)以理想的解決溫度數(shù)字轉(zhuǎn)換。寫TH,TL指令以及配置字節(jié)利用一個(gè)記憶功能的指令完成。通過緩存器讀寄存器。所有數(shù)據(jù)的讀,寫都是從最低位開始。DS18B20有4個(gè)主要的數(shù)據(jù)部件: (1)光刻ROM中的64位序列號是出廠前被光刻好的,它可以看作是該DS18B20的地址序列碼。64位光刻ROM的排列是
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