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英文原文

英文原文

Development of Sensor New Technology

Sensor is one kind component which can transform the physical quantity

，

chemistry

quantity and the biomass into electrical signal.

The output signal has the different forms

like the voltage, the electric current, the frequency, the pulse and so on, which can satisfy

the signal transmission, processing, recording, and demonstration and control demands. So

it

is

the

automatic

detection

system

and

in

the

automatic

control

industry.

If

automatic

Technology

is

used

wider,

then

sensor

is

more

important.

In

information

age,

the

information

industry

includes

information

gathering,

transmission,

process

three

parts,

namely

sensor

technology,

communication,

computer

technology.

Because

of

ultra

large

scale

integrated

circuit’s

rapid

development

after

having

been

developed

,Modern

computer

technology

and

communication,

not

only

requests

sensor

precision,

reliability,

speed

of

response

and

gain

information,

content

request

more

and

more

high,

but

also

requests its cost to be inexpensive. The obvious traditional sensor is eliminated gradually

because of the

function

，

the characteristic, the volume, the cost and so on. As world

develop many countries are speeding up to the sensor new technology’s research and the

development,

and

all

has

obtained

the

enormous

breakthrough.

Now

the

sensor

new

technology development mainly has following several aspects:

Firstly, discovering and using

Using

the

physical

phenomenon,

the

chemical

reaction,

the

biological

effect

as

the

sensor principle therefore the researches

which discovered the new phenomenon and the

new effect are the sensor technological improving ways .It is important studies to develop

new

sensor’s

the

foundation.

Japanese

Sharp

Corporation

uses

the

superconductivity

technology

to

develop

successfully

the

high

temperature

super

conductivity

magnetic

sensor and get the sensor technology significant breakthrough. Its sensitivity is so high and

only

inferior

in

the

superconductivity

quantum

interference

component.

May

use

in

magnetism image formation technology. So it has the widespread promoted value.

Using

the

immune

body

and

the

antigen

meets

one

another

compound

when

the

electrode surface. It can cause the electrode potential change and use this phenomenon to

be possible to generate the immunity sensor. The immunity sensor makes with this kind of

immune

body

may

to

some

organism

in

whether

has

this

kind

of

anti- original

work

inspection.

Like

may

inspect

somebody

with

the

hepatitis

virus

immune

body

whether

contracts

the

hepatitis,

plays

to

is

fast,

the

accurate

role.

The

USUC

sixth

branch

has

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英文原文

developed this kind of sensor.

Secondly, using the new material

The

sensor

material

is

the

important

foundation

for

sensor

technology,

because

the

materials

science

is

progressive

and

the

people

may

make

each

kind

of

new

sensor.

For

example making the temperature sensor with the high polymer thin film; The optical fiber

can make the pressure, the current capacity, the temperature, the displacement and so on

the many kinds of sensors; Making the pressure

transmitter with

the ceramics.

The high

polymer

can

become

the

proportion

adsorption

and

the

release

hydrone

along

with

the

environment relative humidity size. The high polymer electricity lies between the constant

to be small, the hydrone can enhance the polymer the coefficient of dielectric loss. Making

the

capacitor

the

high

polymer

dielectric

medium,

determines

the

electric

capacity

the

change, then obtains the relative humidity. Making the plasma using this principle to gather

the legitimate polystyrene film temperature sensor below, it has the characteristic:

Measured the wet scope is wide;

The temperature range is wide, may reach -400

℃

~ +1500

℃

;

The speed of response is quick, is smaller than 1S;

The size is small, may use in the small space measuring wet;

The temperature coefficient is small.

The ceramic electric capacity type pressure transmitter is one kind does not have the

intermediary fluid the dry type pressure transmitter. Uses the advanced ceramic technology,

the heavy film electronic technology, its technical performance is stable, the year drifting

quantity is smaller than 0.1%F.S, warm floats is smaller than ±

0.15%/10K, anti- overloads

strongly,

may

reach

the

measuring

range

several

hundred

times.

The

survey

scope

may

from 0 to 60mpa. German E+H Corporation the American Kav lio Corporation product is

at the leading position.

The optical fiber application is send the material significant breakthrough, its uses in

most

early

the

optical

communication

techniques.

In

the

optical

communication

use

discovered works as environmental condition change and so on the temperature, pressure,

electric field, magnetic field, causes the fiber optic transmission light wave intensity, the

phase, the frequency, change and so on the polarization condition, the survey light wave

quantity

change,

may

know

causes

these

light

wave

physical

quantity

the

and

so

on

quantitative change temperature , pressure , electric field, magnetic field size, uses these

principles to be possible to develop the optical fiber sensor. The optical fiber sensor and the

traditional sensor compare has many characteristics: Sensitivity high, the structure simple,

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英文原文

the

volume

small,

anti-corrosive

the

electric

insulation

good,

the

path

of

rays

may

be

curving, be advantageous for the realization telemeter and so on. Optical fiber sensor Japan

is

in

the

advanced

level .Like

Idec

Izumi

Corporation

and

Sun

Corporation.

The

optical

fiber send receiver and the integrated path of rays technology unify, accelerates the optical

fiber sensor technology development. Will integrate the path of ray’s component to replace

the original optics part and the passive light component; enable the optical fiber sensor to

have the high band width, the low signal processing voltage, the reliability high, the cost

will be low.

Third, micro machine-finishing technology

In semiconductor technology processing method

oxygenation, the photo

etching the

proliferation, the deposition, the plane electron craft, various guide corrosion and steams

plates,

the

sputtering

thin

film

and

so

on,

these

have

all

introduced

to

the

sensor

manufacture.

Thus

has

produced

each

kind

of

new

sensor,

like

makes

the

silicon

micro

sensor

using

the

semiconductor

technology,

makes

the

fast

response

using

the

thin

film

craft

the

gas

to

be

sensitive,

the

wet

sensitive

sensor,

the

use

sputtering

thin

film

craft

system pressure transmitter and so on.

The

Japanese

horizontal

river

company

uses

various

guide

corrosion

technology

to

carry

on

the

high

accuracy

three

dimensional

processing,

the

system

helps

the

silicon

resonance type pressure transmitter. The core partially presses two resonant Liang by the

feeling which above the silicon diaphragm and the silicon diaphragm manufactures to form,

two resonant Liang's frequency difference correspondence different pressure, measures the

pressure with the frequency difference method, and may eliminate the error which factor

and

so

on

ambient

temperature

brings.

When

ambient

temperature

change,

two

resonant

Liang frequencies and the amplitude variation are same, after two frequency differences,

its same change quantity can counterbalance mutually. Its survey most high accuracy may

reach 0.01%FS.

American Silicon Microstructure Inc .

（

SMI

）

the company develops a series of low

ends, linear in 0.1% to 65% scope silicon micro pressure transmitter, the lowest full

measuring range is

0.15psi

（

1KPa

）

, it makes take the silicon

as the

material,

has the

unique

three

dimensional

structure,

the

light

slight

machine-finishing,

makes

the

wheat

stone

bridge

many

times

with

the

etching

on

the

silicon

diaphragm,

when

above

silicon

chip stress, it has the distortion, the resistance produces presses the anti-effect but to lose

the bridge balance, the output and the pressure becomes the proportion the electrical signal.

Such silicon micro sensor is the front technology which now the sensor develops, its

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英文原文

essential

feature

is

the

sensitive

unit

volume

is

a

micron

magnitude,

is

the

traditional

sensor several dozens, several 1%. In aspect and so on industry control, aerospace domain,

biomedicine has the vital role, like on the airplane the use may reduce the airplane weight,

reduces the energy. Another characteristic is can be sensitive is small surveyed, may make

the blood pressure transmitter.

The

Chinese

aviation

main

corporation

Beijing

observation

and

control

technical

research

institute,

the

development

CYJ

series

splashes

thanks

the

membrane

pressure

transmitter

is

uses

the

ion

sputtering

craft

to

process

the

metal

strain

gauge,

it

has

overcome the nonmetallic strain gauge easily the temperature influence insufficiency, has

the

high

stability,

is

suitable

in

each

kind

of

situation,

is

measured

the

medium

scope

widely, but also overcame the tradition lowly to glue the precision which the type brought,

sluggish big, shortcoming and so on slow change, had the precision high, the reliability is

high, the volume small characteristic, widely used in domain and so on aviation, petroleum,

chemical industry, medical service.

Fourth, integrates the sensor

Integrates the sensor the superiority is the traditional sensor is unable to achieve, it is

a simple sensor not merely, it in at the same time the auxiliary circuit part and send the part

will

integrate

on

together

the

chip,

will

cause

it

to

have

the

calibration,

to

compensate,

from the diagnosis and the network correspondence function, it might reduce the cost, the

gain in yield, this kind of blood pressure sensor which American LUCAS, NOV

ASENSOR

Corporation will develop, each week will be able to produce 10,000.

Fifth, intellectualized sensor

The intellectualized sensor is one kind of belt microprocessor sensor, is achievement

which the microcomputer and the sensor unifies, it has at the same time the examination,

the judgment and the information processing function, compares with the traditional sensor

has very many characteristics:

Has the judgment and the information processing function, can carry on the revision,

the error to the observed value compensates, thus enhancement measuring accuracy;

May realize the multi-sensor multi parameters survey;

Has from the diagnosis and from the calibration function, enhances the reliability;

The survey data may deposit and withdraw, easy to operate;

It

has

the

data

communication

interface,

can

and

the

microcomputer

direct

communication.

The

sensor,

the

signal

adjustment

electric

circuit,

the

monolithic

integrated

circuit

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