宠物定时喂食器设计中英文翻译(2)

The digital temperature sensor of DS18B20

The digital temperature sensor of DS18B20, This product uses the

American

DALLAS

company's

DS18B20

network

digital

temperature

sensor

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-Wire

TM

interface

requires

only

one

port

pin

for

communication.

Multidrop

capability

simplifies

distributed

temperature

sensing

applications, requires no external components, Can be powered from data

line. Power supply range is to , Zero standby power required, Measures

temperatures

from

-

55°C

to+125°C.

Fahrenheit

equivalent

is

-

67°F

to+257°F

,

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.).User-definable,

nonvolatile

temperature

alarm

settings, Alarm search command identifies and addresses devices whose

temperature

is

outside

of

programmed

limits

(temperature

alarm

condition).Applications

include

thermostatic

controls,

industrial

systems, consumer products, thermometers, or any thermally sensitive

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

several

set

nets

function,

several

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 use

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 , the G 1|2 term chooses

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

、

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 .

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

TS-18B20

TS-18B20A

TS-18B20B

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 use data total line power supply, the electric

voltage scope has never needed to provide for use the power diagraph

temperature

scope

for

the 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

temperature

range

-55~125

-55~125

-55~125

install

thread

no

M10X1

1/2G

electric

length

m

cable

apply

piping

DN15~25

Connects

line

box

DN40~ 60

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 system

The number thermometer that describes the DS18B20 provides 9-12(the

programmable equipments temperature read a number. The information is

disheveled hair to send to connect through a line from the DS18B20, so

central

microprocessor

and

DS18B20

only

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. Because each DS18B20

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

DS18B20

internal

structure

mainly

constitutes

to

from

the

four-part

cent:

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 electric voltages get

from 3 Vs-5s in the exterior.

The

DS18B20

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 order any first of a:

1)

read ROM

2)

ROM match

3)

search ROM

4)

jump ROM

5)

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

DS18B20

completion

temperature

measure,

the

data

saves

in

the

saving

machine

of performance

of a control function conductor designation DS18B20 measures. Measure

result

will

be

placed

in

the

DS18B20

memories,

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 DS18B20

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

word's

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 DS18B20 has 4 main data parts:

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

DS18B20

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

oneself, 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 DS18B20 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 DS18B20 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 ℃ |the LSB form express, among them, the S is

a sign.

The saving machine of DS18B20 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 transfer 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 to°

from

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 oneself 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.

64 8 ex- oneself codes that is a DS18B20 that only engrave ROM, next

48 are a continuous

number code, 8

of

end is

to 56 ex- of

the CRC schools

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 DS18B20 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 Vs

~

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

Ω

to or soly and up pull electric resistance.

Allocation's 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.

DS18B20

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 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 numbers put from low to Gao Wei.

The instruction agrees on code operating instructions:

1)

The

temperature

converts

the

44

H

start

DS18B20

to

carry

on

a

temperature conversion

2)

Read to temporary save machine BEH to read to temporary save machine

9 word stanza contentses

3)

Write

temporary

and

save

the

machine

4

EHs

to

write

in

a

data

temporary

TH of saving the machine and TL word stanza

4)

The replication temporary saves the machine 48 Hs temporary save the

TH of machine and TL word stanza to write E2 RAM

5)

Re- adjust the E2 RAM B8's 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 DS18B20 of the power supply

method sends out the power supply method gives lord CPU

The beginning of DS18B20 starts to turn.

1)

place data line first Gao Dian Ping

2)

postpone(what the time request isn't very strict, but possibly a

little bit shorter)

3)

the data line pull a low electricity even

4)

postpone 750.(the horary time scope can from 480-960)

5)

the data line pull Gao Dian Ping

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 even