The digital temperature nsor of DS18B20
The digital temperature nsor of DS18B20, This product us the American DALLAS company's DS18B20 network digital temperature nsor chip package. but become wear-resistant touch, the physical volume is small, convenient, packaging form is varied , Suitable for all kinds of narrow space in digital temperature test and control field equipment.
Unique 1-WireTM interface requires only one port戏弄的意思 pin for communication. Multidrop capability simplifies distributed temperature nsing applications, requires no external components, Can be powered from data line. Power supply range is 3.0V to 5.5V, 送终Zero standby power required, Measures temperatures from -55°C to+125°C. Fahrenheit equivalent is -67°F to+257°F, ±0.5︒C accuracy from -10°C to +85°C, Thermometer resolution is programmable from 9 to 12 bits, Converts 12-bit temperature to digital word in750 ms (max.).Ur-definable, nonvolatile temperature alarm ttings, Alarm arch command identifies and address devices who temperature is outside of programmed limits (temperature alarm condition).Applications include thermostatic controls, industrial systems, consumer products, 老婆老婆我爱你thermometers, or any thermally nsitive system.
1、the description of technique function:
1)Single-line interface is unique, DS18B20 while linking with microprocessor only need a line can immediately carry out the double of microprocessor and DS18B20 toward the communication.
2)measure scope-55 ℃ ~ +125 ℃ , proper measure resolution's 0.5 ℃ .
3)support veral t nets function, veral DS18B20 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 more
4)work the power:3~5V|DC
5)don't need any outer circle component in the u
6)measure the result measure a way string with 9~12 numbers line transmission
7)stainless steels protect to take care of diameter Φ 6
8)be applicable to DN15~25, DN40~ DN250 various equipments that lie industrial piping of quality and narrow and small space measure
9)standards install the thread M10 X1, M12 X1.5, the G 1|2 term choos
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.
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2、Application
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 realm
2)stalk tiles, urn body, the Fang machine, the air condition, waits industrial equipments of narrow and small space to measure a moderate control.
3)car air condition, refrigerator, cold cabinet, and medium low temperature dry box of etc.s.
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 realm
3、Product model number and specification
type | temperature range | install thread | electric cable length | miconductor apply piping |
TS-18B20 | -55~125 | no | 1.5 m | |
TS-18B20A | 押出机-55~125 | M10X1 | 1.5m | DN15~25 |
TS-18B20B | -55~125 | 1/2G | Connects line box | DN40~ 60 |
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4、Connect line instruction
The 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 didn't need an external component to u data total line power supply, the electric voltage scope has never needed to provide for u 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 machine's programmable resolution to convert into 12 number formats for 9~12 temperatures biggest be worth to 750 a milli- of cond the customer can define of not and easily lo x 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 nsitive system
The number thermometer that describes the DS18B20 provides 9-12(the programmable equipments temperature read a number. The information is disheveled hair to nd to connect through a line from the DS18B20, so central microprocessor and DS18B20 only
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have a per line conjunction. For read and write and the temperature conversion can acquire energy from the data line, don't need to circumscribe the power. Becau each DS18B20 includes a special ordinal number, veral ds 18 bs 20 s 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 u 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 DS18B20 internal structure mainly constitutes to from the four-part cent: 信任背摔游戏规则64 temperatures that only engrave ROM and temperature to spread a feeling machine and don't 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 Ping's arrival refreshes .The power of the DS18B20 can also.5V electric voltages get from 3 Vs-5s in the exterior.
