Is in the industrial automation control system one
of foundation common measuring appliances. On in the century
80's first arrivals 90's, along with the micro electron and the micro
processing technology rapid development, demonstrated direct-viewing,
the survey precision is high, has PID 自整 to grade the function the
numeral regulation meter and the multichannel, the multi-purpose
input, the large capacity survey data electron memory function new
recording meter - non- paper recording instrument obtains the fast
development, holds the important status in the industrial automation
system, promoted at that time our country petroleum, the chemical
industry, the metallurgy, the machinery and so on each profession
automation level enhancement.
Hereafter, along with the DCS system price large drop, the PLC
controller popularization application, the computer undertakes
function and so on demonstration, control operation and data storage
in the industrial automation system, therefore original application
numeral regulation meter and recording instrument coating
substitution, but in the overall they gradually are in wither the
condition. Very many professionals thought the numeral
regulation meter and the recording meter development walked terminus,
but this MICONEX 2,004 situations let the author view have the
question regarding this. Domestic and foreign takes along the
numeral regulation meter and the recording meter participation company
has 340 to be many, is not deficient yearly produces several ten
thousand scales the companies. China in recent years the
national economy fast development, the enterprise sharp growth, the
low-price quality merchandise numeral regulation meter and the
recording meter in the scale not big, the automaticity not high, the
personnel skill relative comparatively were bad, the establishment
time not long mid- and small-scale enterprise application is very
economical, effective. But the overseas product stress to uses
in the special system and the equipment special-purpose control
recording station, the control station direction develops.
An overseas product characteristic
(1) the numeral regulation meter and the recording meter have
developed into the dedicated application control station, the
recording station, the network station. A numeral regulation
meter has the multi- return routes configuration control, the
multichannel switch quantity input, the output logic control function,
the non- paper recording instrument often has several dozens channels
survey record function, but also contains the multichannel numeral
adjustment function. The original many models, are more
difficult the special-purpose system which controls, like the boiler
control, 渗碳�system and so on control, vacuum sintering furnace
control, must have combination and so on many PID. Formerly
needed many composition and so on digital adjustment, manual
manipulator, alarm apparatus and recording instrument, now so long as
a special-purpose numeral regulation meter or the recording meter may
realize, simultaneously the measuring appliance had the many kinds of
correspondences agreement connection, was very convenient and the
entire factory automation system connects, realizes the information to
exchange.
(2) the human nature man-machine contact surface design, may
simultaneously demonstrate the multiple messages and the many kinds of
ways. The configuration operation aspect already has the
tradition through the instrument panel button way operation, also may
on establishes the parameter in the computer or hand holding to
download through the network to the measuring appliance in.
(3) the measuring appliance further enhances in the performance
and the reliable aspect, the survey precision for ±0.1%f.s is the
universal level, the sampling control cycle is more and more quick,
originally generally is 0.5s, 0.25s, now some even appears achieved
the 25ms sampling control cycle the fast measuring appliance, the MTBF
reliability achieves for several hundred thousand hours.
(4) the measuring appliance develops to the network direction,
many measuring appliances have open style DeviceNet, Profibus,
CC-Link, the Ethernet-Link many kinds of main lines connection,
facilitates connects the factory automation system.
(5) as a result of the measuring appliance own development, the
numeral regulation meter and the recording meter in certain domains,
the control device compared to uses plan control and so on the DCS,
PLC effectively, natural price compared to higher, the existence and
the development space is very big.
Two domestic products characteristic
(1) the recent years domestic product numeral regulation meter
and the recording meter had made great strides, this gave credit to
the significant contribution which made to the privately operated
technical enterprise. The main numeral regulation meter
manufacturer includes: On the Run precision instrument limited
company, the rainbow Run precision instrument limited company, the
Xiamen space optoelectronic technology limited company, the Xiamen
Anton electron limited company and so on, its annual output achieves
several ten thousand scales. The recording meter mainly is the
non- paper recording instrument, the merchant has the Hangzhou creator
of world automated system limited company, Zhejiang major and medium
controls the measuring appliance limited company, Beijing beautifully
reaches the electronic engineering science and technology limited
company and so on, year sales volume several thousand to up to ten
thousand.
(2) the domestic product the quantity occupies the absolute
superiority in the market, but also displays the conventional variety
many, the characteristic variety are few, between several factories
the product function, the quality level quite, between various product
lack the characteristic.
(3) the measuring appliance in the performance, the outward
appearance, the reliable aspect slightly abdicates compared to the
overseas similar product.
(4) has the correspondence function already is the numeral
regulation meter and the recording meter conventional function, but at
present only has Modbus, RS-485, the RS-232 form, openness badly, is
more difficult to turn on the factory main line automated system.
(5) at present domestic product competition quite intense, the
competition method often pauses in the price competes, mutually keeps
prices down, creates the enterprise profit margin to be low.
Thus, the enterprise further the technical development, the
technical innovation investment insufficiency, causes the new product
few, promotes the time to be long.
Three several participations merchants typical product
introduction
(1) Chongqing horizontal river meter
The horizontal river meter this display multitudinous
specification and the variety digital intelligence regulation meter
and the demonstration recording meter, the characteristic is refines
according to the function classification. The digital regulator
has in 14 kinds to set at the control function electric stove control,
to heat up/the cooling control, the position proportion valve position
control and so on all has the special-purpose controller realization.
The UT351 also sign matches the ethernet connection, namely
inserts namely uses, the realization real-time monitoring, the
long-distance maintenance, does not increase the company to take over
the use of the hardware equipment, the realization system network.
The CX1000/CX2000 non- paper demonstrated the recording
instrument is called controls the down-range station to be more
accurate, is the collection survey, the control, the record, the
network function nf to a body large-scale control down-range station.
It may to the production process real-time, the historical
condition carry on the surveillance, the interior has the nimble
configuration PID return route control, the procedure process control,
the logic control function realization to the industrial control, in
sets at the 10Base-T ethernet connection or Web server, E-mail and the
FTP function can realize the network correspondence.
(2) European land automatic equipment (far east) limited
company
The European land group newly promotes 2,000 series
procedures process control numeral adjustment controller and 3,000
series three return routes numeral adjustment controller. The
European land numeral regulation meter is most early enters one of
Chinese market overseas products. This time promotes two new
series measuring appliances: In 2,000 series 2,604, 2,704
program timers and 3,000 series 3,116, 3,216, 3,580, 3,504 numerals
regulation meter. New series has 3 control loops, PID, VP or the
ON/OFF control may the configuration become way and so on cascade
control, proportional control, feed-forward control, uses in the
vacuum oven, the big gas stove, the boiler control as well as the
constant temperature constant humidity room control, the program timer
may save 60 sections of 650 step of procedures controls, may expand 20
logical inputs and 20 relays outputs, realizes the logical program
control function. Many kinds of open style agreements
correspondence connection Profibus-DP, Modbus RTU, RS-485/232,
DeviceNet and EI-Bisyc, facilitate turns on each kind of factory
automation main line system.
(3) Japanese physics and chemistry industry joint-stock company
(RKC)
RKC history glorious, domestic introduction
comparatively early, the market coverage is broad, in the plastic
machinery, the electronics industry assembly processing, food, in the
semiconductor profession temperature control high end market occupies
the superiority. This demonstration has program timer MA900/901,
standard type warm controlling CB100, CB400, CB500, CB700, the CB900
series, the high speed sampling control cycle reaches 25ms HA900, the
HA400 series. The control mode has outside the intelligent PID
control, but also has the position proportional control, the cascade
control. The output way has the tip output, actuates SSR with
the voltage pulse output, the electric current, the voltage
continuously to output, three ends bidirectional crystals thyratron
outputs, bidirectional actuates three ends with to trigger the output,
may modulate the choice.
(4) Xiamen space optoelectronic technology limited company
The Xiamen space electricity leadership product AI
series artificial intelligence adjustment meter, the item year before
last sales volume reached 60,000. The AI series artificial
intelligence regulation meter uses from the study and the fuzzy
control technology, realizes from 整定/the auto-adapted function,
achieved without the over modulation, the not long accent fine
adjustment, the performance surpasses the traditional PID regulator.
Based on RS-485 the correspondence connection AIBUS
correspondence agreement, the simple highly effective also function is
complete, corresponds under 9600B in RS-485, average each measuring
appliance reads takes 3 therapeutic doses and 1 parameter time only
40ms, is uses the Modbus agreement measuring appliance 3 ~ 10 times,
series sets up the FCS structure computer supervisory system using
AIBUS the agreement AI, each string mouth connected 50 measuring
appliances still to be able to obtain satisfaction data renovating
rate.
(5) Beijing beautifully reaches the electronic process science
and technology limited company
Beautifully reaches develops the EN3800 series on-line
vibration monitor protection system, uses in including system and the
equipment safe related many kinds of important mechanical parameters
like rotational speed, the axis and so on steam turbine, hydraulic
turbine, compressor, gas turbine, air blower, electric motor and water
pump inspires/the throw, the tile inspires/the rack to vibrate, 胀
the difference, the bias and so on the second-by-second measurement,
the surveillance and the record, and carries on the condition monitor
protection and the fault analysis diagnosis using the survey parameter
to the equipment. Because it the vibration monitor protection
system technology with the non- paper recording meter technology fuses
in together, causes the EN3800 series to compare favorably with the
foundations of the state Terley company 3,800 systems, German Filley
the water's edge company RMS700 system certain aspects has the
characteristic: Uses the belt back light colored liquid crystal
screen sinicizing demonstration, in sets at the charged protection
large capacity electronic plate and 3.5 inches floppy disks recording
survey data, selects more reliable, more convenient also the nimble
menu establishment method, avoids using easily to make a mistake
çŸæŽ¥ the block establishment way. The system each channel may
benefit serves as the axis to inspire/the throw, the tile
inspires/monitor and so on rack vibration. It may complete the
multitudinous monitor function the combination, the natural price is
higher than, has the RS-232/485 correspondence connection, directly
with system communication and so on computer and DCS. The
article originates from:
Http://www.kehaoauto.com.cn |
