Nghiên cứu chế tạo máy soi trứng đèn led

Trung gia edm la loai thuc phdm thiet yeu dugc ngudi tieu dung uu tien lua chpn vi gia trj dinh dudng cao, gia ca hgp ly va chdt lugng an toan.. Viec nghien cuu che tao mdy soi trdng den

NGHIEN CUtJ CHE TAO MAY SOI T R I T N G DEN LED

RESEARCH AND MAKING EGG SCANNER USING LED LIGHT

TRUONG THE QUANG^'^

TOM TAT: Khao sdt thuc te tgi 16 cdng ty, trang trgi nudi gia edm tgi Thdnh phd Hd Chi

Minh vd cdc vdng phu can, chpn dugc mdy soi trung mau sic dung den soi ddt 60 W/h, 220 V Thi nghiem md hinh ddng dgng mdy thiit ke vd mdy mau kit hpp v&i phuang phdp phdn tich thie nguyin da thiit ke vd chi tgo thdnh cdng mdy soi trung den led, hien dang sic dung hieu qud tgi Phdng thi nghiem Cdng nghi Sinh hpc Truang Dgi hpc Vdn Lang Den soi cua mdy thiit ke la den led 30 W/h, 220 V cd nhiiu uu diim han khi so sdnh v&i den soi mdy mdu, cu the nhu quang thdng hoac cudng dp sdng gdp 3,33 Idn hiiu sudt phdt sdng gdp 6,67 Idn tudi tho gdp 41,67 Idn, nhiet dp tda ra 300C thap hon 0,5 lan nen khdng dnh hu&ng den chdt luang tnmg khi soi, tieu thu dien ndng it han 0,5 lan vd xdc dinh dugc tudi ngdy ciia cdc logi trung gia cam

Tu khoa: mdy soi trieng, den led, ddng dang

ABSTRACT: Actual survey of 16 companies, poultry farms in Ho Chi Minh City and

surrounding areas, to choose sample egg scanner using incandescent light 60 W/h, 220 V Model experiments on design machine and sample machine has been implemented, combined with dimension analysis method, has been designed and manufactured successfiil egg scanner using led, currently being used effectively in biotechnology laboratories of Van Lang University Led light 30 W/h, 220 V of design machine have more advantages compared to light of model machine, such as luminous flux or light intensity is more than 3.33 times, luminous efficiency is more than 6.67 times Longevity of light is more than 41.67 times, radiation temperature is 300C less than 0.5 times so it does not affect quality of egg during scanning, power consumption is less than 0.5 times and can determine day age of poultry egg types

Key words: egg scanning machine, led light, uniform

l D A T V A N D E :

Theo Bdch khoa todn thu v l thdc dn va hpc dinh dudng va x i p trung dung ddu

dinh dudng Hoa Ky: "Trieng gd la ky tich thang nay, trdng dugc dung lam mdu d l so ciia thiin nhien, la mot trong nhiing thuc sdnh cac loai thuc phdm khdc Trung la loai phdm hoan thien nhdt md nhdn logi ticng "thuc phdm vdng" cung cdp protein, calo,

6/^f(?in" [2] Hai nhd khoa hgc Block va carbohydrate, chdt beo, omega-3, mudi Mitchell [9] da xay dung thang hda NaCI, 13 loai vitamin, khoang chdt, cdc

enzyme va hormone, bdo dam su phdt trien

cua CO thi con ngudi

Theo thing ke cua FAO (The

Poultrysite, January 2011) [4], Viet Nam

ddng thu 12 d chau A, thu 5 trong khdi

ASEAN va thd 27 tren thi gidi vl san

lugng trung sdn xudt Nam 2010, dat sdn

lugng la 5,9 ty qud Lugng trdng dugc tieu

thu mdi ngudi trong mgt nam d Viet Nam

con kha thdp, nam 2010 dat 68,33 qud moi

ngudi, tuong duong 4 kg trdng mot ngudi

Tuy nhien, lugng tieu thu da tang 18,58 qua

so vdi nam 2000 Trong khi do, mdc tieu

fliu trdng nam 2010 d chdu A binh qudn

khodng 9,2 kg mdi ngudi tuang ducmg 158

qud

Trung gia edm la loai thuc phdm thiet

yeu dugc ngudi tieu dung uu tien lua chpn

vi gia trj dinh dudng cao, gia ca hgp ly va

chdt lugng an toan Mdi ngdy, thj trudng

Thanh phi H i Chi Minh tieu thu khodng

3,2 den 3,5 trieu qud trdng, trong do cd 1,4

den 1,6 trieu trung vjt; 1,5 den 1,7 trieu

trdng ga vd 0,2 den 0,3 trieu trung cut [1]

Thdi gian qua, anh hudng cua djch

cum gia cam, trdng nhiem melamine,

Sudan, vi sinh vdt khien ngudi tiSu ddng

cdng than trpng khi mua trdng Vi the, viec

cung cdp ngudn trdng sach dang trd thdnh

yeu cau thiet yeu cua ngudi ti6u dung Viec

nghien cuu che tao mdy soi trdng den led la

cdn thiet dS xdc dinh tuoi ngay cua trung,

phuc vu cho cong tac kiem tra chat lugng

san pham trung v6 edm quan, vi sinh vat,

phan loai trdng vd dam bdo an toan ve sinh

thuc pham

2 MVC TIEU VA NQI DUNG NGHIEN

CUU

Nghien cuu, thiet ke vd che tag may soi trdng den led su dung trong Phong thi nghiem Cdng nghe Sinh hpc Tru'dng Dai hgc Van Lang

2.2 Noi dung nghien cihi Khao sdt thuc te may soi trung duac sir dung phd bien tai cac cong ty, trang trgi chan nuoi gia edm tai Thdnh pho H I Chi Minh va vung phu can de chpn may soi trung mau (mdy mdu)

Do dac cdc thdng sd ky thuat cua may mdu va thi nghiem md hinh dong dang tr8n mdy mdu va may soi trdng den led (may thiet ke) nhdm thu thap so lieu, tinh toan cdc thdng sd ky thuat de thiet ke va che tao mdy thilt ke

Thd nghiSm soi trdng bang mdy thiet

k l d l danh gid cdc m^t uu, khuyet diem va bieu qud so vdi may mdu

3 PHUONG PHAP NGHIEN ClTU 3.1 Khao sat chpn may mdu Khao sat cac loai mdy soi trung tai m^t

sd CO sd chdn nudi gia cam nhu Nong Phat, Trudng Phu, Cat Phu Sa, Thi Ky, Hoang Kim, Thang Long, Thanh Liem tai Thanh phd H i Chi Minh; Thanh Tdn, Tudng Van, True Diln, Kim Long, A Chau, Hai Van t^i tinh Binh Duong; D i n g Nai, Hong An, CP tai tinh Ddng Nai; Hgp tdc xa Thuan Phudc tai tinh Long An Phdng vdn nhdn vien soi trdng tai cdc co sd chan nudi gia cam va thao tdc thd nghiem d l chgn mdy mdu co nhiiu uu diim vd phu hgp su dung troi^ phdng thi nghiem cdng nghe sinh hpc 3.2 Thi nghiem mo hinh

D I nghien cuu, thilt k l vd chi tao may soi trdng mdi phai xdy dung mo hinh thi nghiem dua tren may hiSn co Vay, gifla

tu hay dong dang vdi nhau Thuyet ddng

dang dugc xem la ca sd ly luan due ket,

khdi quat hoa sd lieu thuc nghi8m de rut ra

nhung quy luat chung cho cdc hien tugng

dong dang vdi nhau Trong trudng hgp nay,

giua may thiet ke vd mdy mdu c6 su dong

dang vd cd cung gid tri chuan sd ddng dang

neu chung thoa man tieu chuan tuong tu

hoac ddng dang do

3.3 Xu- ly s6 liSu bdng phirong phdp

phan tich t h d nguyen

Phuong phdp phan tich thu nguyen Id

phuong phdp xd ly s l lifu thuc nghiem de

thiet lap cdc chuan sd ddng dang (co thu

nguyen bang 1) cho mgt qud trinh can

nghien edu Co sd cda phuang phap phdn

tich thu nguygn la dinh ly n Mgt qud trinh

hodn todn dugc md td bdi phuong trinh

chudn s l (1), trong do TEI, 7t2, , iCn la cdc

chuan so dong dang

f(7I,,7E2, ,7Ir,) = 0 (1)

Cdc thdng sd ky thuat cua mdy thiet ke dugc tinh todn tu' chuan so dong dang va cac thong so ky thuat da biet cua mdy mdu tuong ung vdi tung tieu chuan tuong tu trong thi nghiem md hinh

3.4 Danh gid iru, nhup'c diem cua may thiet ke

Thi nghiem soi trdng tren may thiet ke

vd mdy mdu, thu thap thong tin, phdn tich

va tong hgp de ddnh gia, so sdnh giua may thilt k l va may mdu, dong thdi rut ra cac

uu, nhuge diem

4 KET QUA VA THAO LU-\N 4.1 Khao sat chpn mdy mau Mdy soi trung tai cac bg gia dinh chdn nuoi gia cam rdt don gian, do Id mpt hop g§, h6p kim loai hoac h6p giay, ben trong lap mgt bdng den compact hoac den sgi dot cong sudt dao ddng td 25 den 60 W, phia tren thCing cd khoet Id d l ddt trung vao soi (Hinh la)

m

a May soi tning tu che b May soi trirng nu6c ngoai

Hinh I MAy soi tning cac lo^i

; May soi trirng n

Tai cdc trang trai chan nudi gia edm

Idn, quy m6 cdng nghiep thudng sd dung

nhiing mdy soi trdng dugc nhap tix nude

ngoai CO nhung tinh nang vugt tr6i nhu

hiSu suit ldm viec cao, cudng dp chi§u

sdng cao khi soi cd the nhin rd cdc phan

ben trong qud trung, khong tda nhiet lam

dnh hudng trung, kilu ddng da dang (Hinh

lb)

May mdu dugc chgn Id may soi trdng

den sgi ddt dang dugc sd dung tai trang trai

chan nuoi gia cam Thanh Tdn, tinh Binh

Duong (Hinh 1 c) vdi cdc thdng so ky thuat

dugc neu trong Bang 1 Mdy mdu dugc

chpn vi CO nhiing uu diem vugt trdi hon cdc

loai may soi trdng khdc

4.2 Phuong trinh chuan so cua may soi

trdng

Phuang trinh mo phdng may soi trdng

phu thupc vao 17 dai lugng (Bdng 1) cd

dang phuong trinh (2)

fJ,D,T,P,U,Q,L,B,H,^_

'l,Y,2,F,?.,E,0,R,T (2)

Cd 6 thu nguyen co ban (kg, m, s, do,

cd A) Chgn 6 d^i lugng dpc lap thd

nguyen (J, D, T, P, U, Q), cdn lai 11 dai

lugng phu thudc thd nguyen (L, B, H, Y, Z,

F, X, E, ^, R, T) tuong dng vdi 11 chudn sd

ddng dang la cdc y6u to cua phuong trinh

chuan so (3)

= 0 ( 3 )

t

714

" 7

Tt,

L B H

= — , n , = — , 7 1 , = — ,

D ' D ' D

Y Z F

D ' D ' D

I.D.T E.P

R.D' -c.?

" J

4.3 Tinh toan thiet ke may soi trdng Aka

led

De chpn den soi vd thilt kl mdy soi trdng den led phdi biet cac thong sl kj thuat cda den soi va cdc bp phan cua may thiet ke Cdc thdng sd ky thuat cua may thiet ke dugc tinh todn tu chudn sl ding dang va cdc thdng sd ky thuEit da bilt cua mdy mau tuong ung vdi tung tieu chuIn tuong tu trong thi nghiem md hinh, kit qua tinh todn dugc neu trong Bdng 1

4.3.1 Nguyin ty ldm viec cua den led

Den led bao gdm hai Idp ban dan loai

P va N ghep vao nhau Khoi bdn dan loai P (Anod) chda nhieu Id trong cd xu huong chuyen dpng khuech tdn sang khoi ban dan loai N (Catod), cdng luc khdi ban ddn loai

P lEii nb^n cdc electron td kh6i bdn dan lo^i

N chuyen sang Ket qua, hinh thanh d khii

P dien tich dm vd khoi N dien tich duong

O b6 m?t tiep gidp gida hai khdi bdn dan P

va N, cac electron bj cac Id trong thu hiit va

cd xu hudng tiln Iai gdn nhau, ket hgp voi nhau tao thdnh cdc nguyen td trung hoa Qud trinh ndy giai phdng nang lugng dudi dang cdc photon anh sang Budc song ciia dnh sang phdt ra phg thudc vdo cau true cua cdc phdn td lam chit ban ddn Neu budc song nay nam trong vdng anh sdng kha kien tu 390nm din 750nm, mat con ngiroi

cd the cam nhan dugc mau sac cua anh sang (Hinh 2)

Nguon cap d6ng cho Lod

+ I

-loai P W Ban din lo^i N

O O O 0 _ - _ n _ » • • •

O O O Q _ £ • * — • • • •

Ifl (n6i trfing) _^ Hal dign ti>

Mi>c dan Mi>c Fermi anh sing

o o o o o o o~"2f—,1

a Sir chuygn doi ciia electron va 16 qua viing tiip giap P-N b Hinh anh den led

Hinh 2 Nguyen ly lam viec ciia den led [lb]

4.3.2 Thi nghiem chgn cong suat den soi,

tieu ctr thau kinh hgi t^

Bo tri ngudn sdng bang den led cd

cong sudt ti6u thu 10, 30, 50, 70 va 100

W/h dat each tbdu kinh hdi tu mpt khodng

bang tieu cu tuong ung voi chieu ddi dng

soi de tao chum tia Id song song tdp trung

anh sang vao trdng Chpn trung soi trong

thi ngbiSm la cdc loai trdng gia cam Thi

nghiem lan lugt vdi 3 loai tbdu kinh hdi tu

cd tieu cu 7,5; 11,5; 17,5 cm va cd cung dp

Ui 3 diop Trdng dugc dat ngay sau thau

kinh hdi tu va tiln hdnh quan sdt vdi

khoang each td mdt din trdng la 5cm tuong

dng vdi cbilu dai I n g nhin Hieu qud cua

viec soi trung dugc danh gid theo dp ro,

thang do dp ro cd 5 mdc: rd nhat, khd rd, rd

vua, it ro, khdng ro Sd dung nhiet ke de do

nhiet dp tda ra td den soi Ket qud thi

nghiem soi trung chgn cdng sudt den led P

= 30 W/h, tieu cu thdu kinh hpi ty bang

chilu dai I n g soi F = Z = 11,5 cm dat dugc

do rd cao nhdt Nhiet do toa ra tu den soi

T = 30 C khdng lam dnh hudng den chdt lugng trung Ddi vdi den led cdng suat cao hon 30 W/h, soi trdng tbdy dp ro khdng cao hon so vdi den led 30 W/h, tuy nhi8n nhiet

dp tda ra tu den gia tang td 45''C din 60°C ldm dnh hudng den chat lugng trdng khi soi

4.3.3 Tinh todn cac kich thwdc hinh hgc cda mdy thiet ke

Dua vdo hang sd ddng dang hinh hpc

chieu dai dng soi cua may mhi va may thiet

k l xz = Z M / Z ^ 1 , 5 0 va kich thudc binh hgc cua may mdu, tinh toan dugc cdc kich thudc hinh hgc cda mdy thiet ke gdm chieu ddi khdng cd dng nhin L, chieu rdng B, chieu cao H, dudng kinh Id soi D, dudng kinh Id nhin Y, chieu ddi dng soi Z, tieu cu thau kinh hpi tu F Ong nhin co chi6u dai

Ln = 5 cm la bd phdn cdi tien cua may thiet

ke giup lam tang khd nang quan sdt Ket qud tinh todn dugc neu trong Bang I

Bang 1 Cac thong s l ky ihuat ciia may soi trimg mlu va thiet ke

Lo^i

Kich

thircrc hinh

hgc

Den soi

Thong so (doll vi tinh)

ChiSii dai Ing nhin (cm)

iOhieu dai may khong co

Ing nhin (cm)

Chilu rong may (cm)

ChiSu cao may (cm)

Dirdng kinh 16 soi (cm)

Duong kinh 1§ nhin (cm)

Chilu dai ong soi (cm)

TiSu cy thau kinh hoi tu

(cm)

Cong suit (Watt/h)

Higu dign thi (Volt)

Cuong dp sang (candela)

Quang thong (lumen)

DQ tnmg (lumen/cm^)

Nhiet luong toa ra

(Joule/h)

Hieu suit (Im/Watt)

Nhiet do t6a ra ("C)

Do din nhi?t ciia t§m tan

nhi|t (W/m.^C)

Tuli tho (h)

Thii" nguygn theo h§ SI

m

m

m

m

m

m

m

m

kg.m'.s-' lcg.mls-=.A-'

cd

Im Im.m"^

kg.m^ s'^

Im kg"'.m"^s' lis kg.m.s"^.(lp"'

s

May soi triing mSu

Khong CO

L „ - 3 0

B„ = 30 H„ = 30

DM - 4,5

YM = 9,0

F„ - 17,25

P„ = 60

U „ - 2 2 0

J „ - 4 5

<I>„.675

RM = 4 2 , 5

QM = 5 7

E M = 1 5

T„ = 60

X„ - 146,5

tM=1200

May soi trieng thiet

U X

L - 5

L = 20

B = 20

H 2 0

D - 3 , 0

Y = 6,0

Z - 1 1 , 5 0

F = 11,50

P = 30

U - 2 2 0

J - 1 5 0

<1>= 2250

R = 318,75

Q - 0,684

E = 1 0 0

T - 3 0

X = 220

t = 50000

Hang so dong dgngXi=

x„«

1,50

1,50 1,50 1,50 1,50 1,50 1,50

2,00 1,00 0,30 0,30 0,13 83,33

0,15 2,00 0,67

0,024

Nguon: Truang The Quang va cong su (2016)

4.3.4 Tinh todn cdc thong so ky thuat cua

den soi mdy thiet ke

Trong thi nghiem md hinh, mdy m l u

va mdy thiet ke co cung chudn s l ddng

dang Tig, biet cac thdng sd cua den soi may

mdu JM = 45 cd, OM = 675 Im va mdy thilt

k l (D = 2250 Im Tinh dugc cudng dp sdng

cua den soi may thilt ke J theo c6ng thilc (4)

J = ^ = ^ ^ ^ = 150(cd) (4)

^u 675 ^ '

Vdi dieu kien chudn sd dong dang n

khong ddi do mdy mdu va mdy thiet ke ddng dang, hieu sudt cua den soi mdy mau

EM = 15 Im/W, cac bang sd ddng dang xp =

2,0 va xj = 0,3 Tinh dugc hieu sudt den soi

may thilt k l E theo cdng thdc (5)

15.2,0

0,3 100 (Im/W) (5)

May mdu va mdy thilt k l c6 cung

chudn sd TIM, cac hang sd ddng dang Xt =

0,024, Xp = 2,0 va nhiet lugng tda ra cda

den soi may mau Q M = 57 Joule/h

Nhiet lugng tda ra cda den soi may thiet k l

Q dugc tinh theo cdng thuc (6)

Q = Q^,.x, ^57.0,024

Xp 2,0 0,684 (Joule/h) (6) Thi nghiem vdi chuan so JTIO cua may mau va may thiet k l nhu nhau, biet cdc

hang so d6ng dang XQ ^ 1,5, xj = 0,3 vd dp

trung cua den soi may mau RM = 42,5 Im/cm Do trung cua den soi may thiet ke

R dugc tinh theo cdng thdc (7)

I Nap may

5 Ong SOI

2 Thiing may

6 Gia dat va xoay trimg

3 Lo nhin

7 Tim nhom tan nhiet

4 6ng nhin

8 Co cau xoay trung

Hinh 3 Cau t?to may soi tning thiet ke

4.3.5 Tinh todn thiit kit&m tdn nhiet cua

den soi mdy thiet ke

Thi nghiem mo hinh vdi chudn sd ddng

dang nj khdng doi, biet cdc hang so ddng

dang XD = 1,50; xp = 2,0; XT ^ 2,0 vd tdm

tan nhi6t cda den soi mdy mdu lam bang

hgp kim nhdm (duralumin) cd do dan nhiet

>.M=146,5 W/m.'^C Tinh dugc dp ddn nhiet

tdm tdn nhiet cua den led may thiet ke X

theo cong thdc (8)

1 = X^.Xp.x^^ 146,5.1,5.2,0

2,0 = 220(W/m.T)(8)

Dp dan nhiet cda nhom nguyen chdt X

=220 W/m.dp, nen chpn vat lieu nhom nguyen chdt Idm tam tan nhiet co kich thudc 16x 16 cm va day 0,8 cm

a Hinh anh tong the may thiet kg b Can lao ben Irnng m^iy Unci ki;

Hinh 4, May soi tning den led (may ibiet ki)

4.4 Ddnh gia uu vd nhuo'c diem may soi

trung den led

Dua vao thi nghiem md hinh dong

dang soi trung, kit qud do dac vd tinh todn

cdc thong so l<y thuat ciia may mau va may thiet ke (Bang 1), danh gia uu va nhugc diem may thiet ke so sanh vdi may mau, dugc neu ironii Bana 2

Bang 2 So sanh uu, nhugc diSm cua may soi irirnsi man \

Lo^i may soi f riimg

May soi tning den led

(may thiet kl)

iTu diem

- Quang thong, cirong do sing cua den soi gdp

3,33 13n so vol den soi may mlu nen soi trLrng

dat dg ro cao nhat, xac dinh din tuoi ti2a\' cua

tning va co the soi dugc tdt ca cac loai li ung gia

elm (Hinh 5)

- Thiet ke nho, ggn phi hgp vdi pliong thi

nghiem, the tich may thiet kl chi bang 37%

may mau

- Nho CO Ing nhin ngn cuimg do chieu sang

khong anh huong toi mat ngiroi soi trun^

- HiSu suat den soi cao hon 6,67 lan so voi den

soi mdy mau nen tilt kiem nhiiu dien nang

- Tuli thg cua d^n soi 50.000 gio, gip 41.67 15n

tuoi thg ciia den soi may mlu

- Nhi?t toa ra ciia may thip 30°C nen khong anh

huong din chat lirgng trirng khi soi

- Co he thdng xoay trirng nen khong can cham

tay vao triing

- Dl dang thao ldp va thay linh kien

- Gia thanh may soi tning dfen led re 5 00(1 000

Nhuoc diem

- Triing phai duoc dua vao ben trong may de

soi May chi soi duoc m6i lan moi Irirng

_^

Lo^i may soi trung

May soi tning den sgi

d i t

(may mau)

U'u diim

VND so voi may mau 10.000.000 VND

- Don gian, de lap r^p, thay the

- De thao tdc su dung do d|t trCmg ben ngoai

khi soi

Nhirffc diem

- Cing kgnh chi^m nhieu di6n tich lam viec do kich thudc Idn

- Kem an toan khi soi tning, anh hircmg den chit lugng triing va mit ngiroi nhin do nhiet do toa ra tir den soi

1cm eo^c

- Nguon sang yeu khflng du khi soi khdng nhin thay dirge cac phan ben trong qud tning

- Sii dung den soi la den soi dot nen khong tiet kiSm dien, tuoi thg cua den soi thip

- Khong cd ong nhin nen khi soi triing d$t b£n ngoai

bj dnh sang mdi trucmg chi phdi

- Khi soi lau nhiet dg tang cao ldm hon 60''C co the lam chet phoi trimg vd gdy chay

nd

Nguon: Trucmg The Quang va cong su (2016)

Bay 20 ri|ia;

Hinh 5 Xac djnh tudi ngdy cua tning bang mdy soi trimg den led

5 KET LUAN VA KIEN NGHI

Kit qud nghien ciiu

Da nghien cuu, thiet ke va che tao

thanh cong may soi tru'ng den led hi6n dang

dugc sd dung cd hieu qud tai Phong thi

nghiem Cong nghe Sinh hgc Trudng Dai

hgc Van Lang;

May thilt kl nho, gpn phu hgp vdi

phong thi nghiem, thi tich mdy thiet ke chi

bdng 37% mdy mdu Co cai tien lap them

Ing nhin nen cudng dp chieu sdng khdng

dnh hudng tdi mdt ngudi soi trung, cd he

thing xoay trung nen khdng can cham tay

vdo trung De dang thdo ldp vd thay linh

kien;

May thiet ke sd dung den led, tiet kiem

dien nang tieu thu 50%, hieu suat soi cao

hon gap 6,67 Idn, quang thdng hoac cudng

dp sang cao hon gdp 3,33 Idn, tuoi thp cua

den soi cao hon gdp 41,67 Idn so vdi mdy

mdu su dung den soi sgi ddt Nhiet dp toa

ra cua den soi mdy thilt k l bdng 30"c nen khdng anh hudng den chdt lugng trung khi soi, CO the soi dugc tdt cd cac loEii trung gia edm va xdc djnh chinh xac tuli ngdy cua trdng (Hinh 5)

Kien nghi cdn tiep tuc nghien cm theo cdc hu&ng

Md rgng pham vi nghien cuu doi voi mdy soi nhieu trdng mgt Idn

Nghien cuu che tao may soi trung den led edm tay nhd gpn

Can tiep tuc nghiSn edu mdy soi tning vdi he thdng den led cd cdng suat cao hem

va tdm tdn nhiet lam ngudi cho mach dien

td tdt hon

Tiep tuc nghien cuu ha gia thanh san phdm de chuyen giao cdng nghe va thuang mai hda sdn phdm

TAI LIEU THAiVI KHAO

1 Bdo Long (2009), CP: Cung cdp "Trdng an todn td trang trai den bda an",

bttp://nid.com.vn/hoi-nhap/cp-cung-cap-trung-an-toan-tu-trang-trai-den-bua-an-200906I2105235435.htm

2 Bui Hdu Dodn (2009), Trdng va gia edm, http://hcmuaf.tailieu.vn/doc/ebook-trung-va-ap-trung-gia-cam-3 64949 html

3 Cdng ty ZODI (2016), Nguyen ly hoat dgng cua den led, http://vuabongdenled.com/bong-den-led-zodi/cau-tao-va-nguyen-ly-hoat-dong-cua-bong-den-led.html

4 Doan Xuan True (2011), Ca thi gidi hay an trung gia edm, http://m.nongnghiep.vn/ca-the-gioi-hay-an-trung-gia-cam-post86666.html

5 Nguyin Bin (2001), Cdc qud trinh vd thilt bj trong cdng nghe hoa chdt va thuc phdm (Tap 1), Nxb Khoa hgc va Ky thuat, Ha Npi

6 Nguyen Thi TuyIn (2012), Khdo sdt quy trinh xd ly trdng gia edm va kilm tra chat lugng sdn phdm, Trudng Dai hpc Van Lang, Thanh phd Hd Chi Minh