The review about some The review about some devicedevice

designed in institute of physic designed in institute of physic and electronic for industrialand electronic for industrialand agriculture enterprise and agriculture enterprise

in Vietnam for Several years.in Vietnam for Several years.

Nguyen Manh Shat, et al.Nguyen Manh Shat, et al. Institute of physics and Institute of physics and

electronic, Hanoi, Vietnam.electronic, Hanoi, Vietnam.

SYMPOSIUM BY ELECTRONICS & COMPUTING NEC-05, VARNA-BULGARIASYMPOSIUM BY ELECTRONICS & COMPUTING NEC-05, VARNA-BULGARIA

Area: total: 329,560 sq km land: 325,360 sq km water: 4,200 sq km

81,624,716 (July 2003 est.)

82,624,716 (July 2005 est.)

Population:

Southe astern Asia,

bordering the Gulf of Thailand,Gulf of Tonkin, and South China Sea, along

Laos, and Cambodia VIETNAM

Capital: Hanoi

Hymne national

Nguyen Manh Shat, and others persons.Nguyen Manh Shat, and others persons.Institute of physics and electronic, Hanoi, Vietnam.Institute of physics and electronic, Hanoi, Vietnam.

The research of the some devices designed in institute of physics The research of the some devices designed in institute of physics and accepted application in the industrial operations and and accepted application in the industrial operations and

agriculture organizations in Vietnam for several years. The main agriculture organizations in Vietnam for several years. The main tasks of the Research are:tasks of the Research are:

- Research the production of some instruments in the cement factory.- Research the production of some instruments in the cement factory. Design and manufacture automatic control system for the clinker discharge,Design and manufacture automatic control system for the clinker discharge,

automatic control system for the level of cement in barrel use gamma ray.automatic control system for the level of cement in barrel use gamma ray. - - Research the system for seeking a place of the findingResearch the system for seeking a place of the finding

oil and portable analyze system for oil.oil and portable analyze system for oil.- Research the systems for the automatic control quality of gold- Research the systems for the automatic control quality of gold - Research the systems for the automatic control quality of coal.- Research the systems for the automatic control quality of coal.

- Research the systems automatic weighing coal on conveyor-machineResearch the systems automatic weighing coal on conveyor-machine use gamma ray.use gamma ray.

- Design and manufacture automatic control - Design and manufacture automatic control system for the clinker discharge, automatic system for the clinker discharge, automatic

control system for the level of cement in control system for the level of cement in barrel use gamma ray in barrel use gamma ray in the cement factory.the cement factory.

Cement production is a big industry branch and plays an important role in economy. In present, all technology systems

of rotary kiln type cement production in Vietnam are imported. The production systems of mechanize vertical

kiln type and automates partially are also imported from China. Recently, Vietnam manufacturers have tried to produce

domestically some instruments, but the major parts of these instruments are for vertical kiln type only and other ones for rotary kiln type, which are big in amount, are non-standard and undervalue. To have a thorough grasp of technology and instruments and to reduce of investments in manufacture and maintenance, the improvement of instrument manufacture

and technology domestically is needed

Determinate level of Cement on Barrens:It is Necessary to define the level of cement or clinker in

strained.Usually strained big and broad so define How much amounts of the cement in him much it is difficult, but Method of the

measurement with straightedge not possible and not comfortable, And it is necessary all time to measure. So we use the method a Gamma rays, and he works such, image:

- Design and manufacture automatic control system clinkerDesign and manufacture automatic control system clinker discharge, automatic control system for the level of cementdischarge, automatic control system for the level of cement

in barrel in barrel use gamma ray in the cement factory.use gamma ray in the cement factory.

cement barrelcement barrel

RadioactiveSource C137

CounterSystem C49

Cement-iron wall

Figure 1, Block-diagram of the

part of this system

- Design and manufacture automatic control system - Design and manufacture automatic control system clinker discharge, automatic control system for the level clinker discharge, automatic control system for the level

of cement in barrel use gamma ray in the cement factory.of cement in barrel use gamma ray in the cement factory.

Cement plants are the greatest polluting sources among building material producers. Pollutants are typically dust and SO2 produced from the five

major cement factories, Bim Son, Hoang Thach, Hai Phong, Hai Tian I and Hai Tian II as well as from about 60 vertical-kiln smaller sized plants in various provinces. Electrostatic dust collecting facilities have only been

installed at Hoang Thach, Bim Son and Hai Tian II. Accordingly, the cement sector generates tens of thousands of tonnes of dust and gaseous

wastes into the atmosphere daily. Other toxic gases of concern are SO2, CO, CO2, NOx, and HF. These

toxic gases along with high concentrations of dust are generated from the Dapeau glass and porcelain plant having a 1,000 tonne capacity and

thousands of brick and lime kilns

CountersAmplifiers & shaper

arithmetical logic

controller

The wheel

Display

Converter

Printer

Figure 4, Block-diagram of the part of this system

- Design the system for seeking a place of the Design the system for seeking a place of the finding oil and portable analyze system for oil. finding oil and portable analyze system for oil.

By G N Florov [4] and founded on measurement of relationof intensity of thermal neutrons in rock from time, elapsedafter a momentum of fast neutrons of a source. The pulseneutron-source is served by the generator, in which one theneutrons will be derivated at the expense of reactingD+T+He+n on the target with tritium under operatingaccelerated up to energy 100 кev of ions of deuterium, withpulse modulation of an ionic current of a handset. The indicator is served by boric meters of thermal neutrons.The recording circuit contains a temporary analyzer, whichone allows to excrete signals from neutrons, coming to theindicator in given period т after termination a momentum ofneutrons. The number of such neutrons descends onexponential law

Amplifier

TDC-converter

Detec-tor

Control system & control logic

Power supplier &Power converter for HVower

converter fo

URT URT- Unit

To the Cable Figure 3, Block-diagram of the

maiden part of this system

URT-unit PC

Notebook

Filter-unitPower supplier

Unit

ADC

Printer

Ampl.

Figure 4, Block-diagram of the second part of this system  

Detector

Fromcable

THE SUMMARY

During the 1986-2003 years at the Vietnam works is underway toward the seeking a place of findings of petroleum for is extracted actively are conducted.to buy of the import equipment in this time it is rather long and dearly. Therefore we have solved to make

except for drill of installation, which already are at thegeologists. The system for seeking of a place of a

finding of petroleum based on the use of the electronic system for data-transmission system from an oil-well

is describe and system for data-processing. This system is applied in oil industries of Vietnam; she is given

a capability to learn interesting parameters in oil-wells, which one is in large grounds and by the sea. The investigation has been performed at the institute for

nuclear physics & electronics, Hanoi, Vietnam

- Design the system for seeking a place of the- Design the system for seeking a place of the finding oil and portable analyze system for oil. finding oil and portable analyze system for oil.

Gives an estimation of effective applications nuclear electronics in economy Gives an estimation of effective applications nuclear electronics in economy and industries in Vietnam for several years.and industries in Vietnam for several years.

- Design the system for seeking a place of the- Design the system for seeking a place of the finding oil and portable analyze system for oil. finding oil and portable analyze system for oil.

The portable analyze systemThe portable analyze system

PetroVietnam will extract the 100,000,000th ton of oil on Feb. 2005. And has also pumped 5.72 billion cubic meters of associated gas up till now. The achievements, the corporation has over past times boosted exploration operations to find new oil and gas sources for the country. "Exploration operations cost some US $1,8 billion a year,

- Design and manufacture the systems forDesign and manufacture the systems for the automatic control quality of goldthe automatic control quality of gold

Gauging of emanation L-of a series of platinum differs nothing from higher - circumscribed. The spectrum of platinum is

analogous to a spectrum of gold, only is arranged a little bit more to the left on an energy scale.

Obtained spectrums were handled on PC-a computer under the original program (in tongue Turbo-C). The program plugged

following operations- Measurement of the spectrum;

- Coercion of a spectrum to the given scale on energy; - Determination and scaling of a hum in a working area;

- Adjustment of standard spades of a L-series of Gold and Silver to points of a spectrum in appropriate windows. Then were computed squares of spades La and Lb gold to analogous spades of silver. In the capacity of analytical argument used average of these ratios. Treated spectrums of gold and copper are instanced

in a Fig.5.

Figure 5: Schematic cut of the stand

1-radioactive source; 2-Collimator;

3- mechanical regulation;4-investigation sample;

5- detector; 6- preamplifiere;7- screen;

8- Duare with liquite nitrogen;

Recently, in linkage with change economic situation, more and more interest cause qualitative Determination both in conditions of firing range, and on tradethe markets, first of all gold, silver and platinum, small on to stocks of impurity,but Distinguished by the tall contents

metal. We had been set the task of development of a procedure Kernel - electronic extraction of gold or still is called Rangel-fluorescent

method (and in the further and metals Silvered group) from samples of the decorated Materials with the subsequent determination of their

concentrating with the help the Rangel-fluorescent system. The Rangel-radiometric method of the assaying sets up on driving of

atoms of parsed units with the help uncollided radiation from radioactive isotope and on the Subsequent registration of characteristic

emanation excited atoms with the help Special the radiometric instrumentation. With the help of radioactive source Cd-109 or Fe-55

the X-radiation of L-series of gold was energized and Silver which it is gauged with help Ge (Li the semiconductor detector and multichannel

analyzer, which it set up on PC.

- Design and manufacture the systems forDesign and manufacture the systems for the automatic control quality of goldthe automatic control quality of gold

Semic-detector

Spectro-Ampl.

ADC

PC

Highvoltag.Power-ply

Preamp.

Electronicscales

Powersupply

Semic-detector

Spectro-Ampl.

ADC

PC

Preamp.

Electronicscales

Powersupply

Figure 4, Block-diagram of the part of this system

- Design and manufacture the systems forDesign and manufacture the systems for the automatic control quality of goldthe automatic control quality of gold

Analytical spectrums

System of the analysis

The portative semiconducting detector - ultra-pure silicon 40 cubical centimeters with the sanction 1,3 КэВ (Canberra). Certainly it only preliminary analysis to learn some parameters, and then in labs will conduct final analysises with the help of an activation analysis, where the irradiation a sample implements a booster by a microtron.

- Design and manufacture the systems forDesign and manufacture the systems for the automatic control quality of goldthe automatic control quality of gold

The main Elements for

diterminations

Figure : Block-diagram of the Principle of Gamma-weighing machine

- Design and manufacture- Design and manufacture the the systems automatic weighing coal on systems automatic weighing coal on conveyor-machine use gamma ray.conveyor-machine use gamma ray.

The old method of the determination amount cargo, is used methodof the determination on level of water. This not exactly and depends on many facts, for example: from accuracy of the fission, and that more naves, that more mistake; from natural water (the wave, big

or small); From winds, there is or no winds and so on.

Counters

The wheel

RadioactiveSource C137

Monitor Counters

CountersAmplifiers & shaper

arithmetics logic

controller

Counters

Converter

Figure 4, Block-diagram of the part of this system

- Design and manufacture- Design and manufacture the systems the systems automatic weighing coal on conveyor-machine automatic weighing coal on conveyor-machine

use gamma ray.use gamma ray.

Display Printer

Contr.Counter

To buy of the import equipment in this time it is rather long and dearly. Therefore we have solved to make except for drill of installation, which already are at the geologists.

The system for seeking of a place of a finding of petroleum based on the use of theelectronic system for data-transmission system from an oil-well is described and system for

data-processing. The instruments are well designed with high stability and ability.This system is applied in oil industries of Vietnam; she is given a capability

to learn interesting parameters in oil-wells, which one is in large grounds and by the sea. The investigation has been performed at the institute for nuclear physics and electronics, Hanoi,

Vietnam. Now in Vietnam extracts over 300 millions tone of petroleum and more 26, 5 billion cubic meters of gases. which there are more petroleum chinks extracts petroleum in Vietnam. All are our systems said well work and helped we vastly spared Much money for

state.

The Findings:

THE ENDTHE END THE ENDTHE END Thank you for attention