Tsis Siv Neeg Lub Teeb Laj Kab Nrog Tswb: 4 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:26

Nyob zoo sawv daws. Ntawm no kuv rov qab los nrog cov lus qhia tshiab.

Lub laj kab teeb pom kev zoo yog siv los txhawm rau pom tias muaj tib neeg lossis khoom nyob hauv ib cheeb tsam twg. Qhov ntsuas pom ntawm Lub Teeb Laj Kab Circuit yog li ntawm 1.5 txog 3 meters.

Nws yooj yim heev los tsim lub Circuit Court siv LDR thiab Op-amp. Lub tshuab hluav taws xob nqa tau no tuaj yeem ua haujlwm tau zoo nrog cov roj teeb 9V feem ntau thiab lub tswb nrov tsim los ntawm lub suab nrov nrov txaus kom paub tias muaj tib neeg, tsheb lossis khoom siv.

Kauj Ruam 1: Yuav Tsum Kho Vajtse

Cov hauv qab no tau siv:

• LM741 Op-amp IC
• 555 timer IC
• BC557 - PNP Transistor
• LDR
• Resistor (210, 1K, 5.7K, 100k, 1M)
• Capacitor (0.1uf, 10uf)
• Potentiometer - 100K
• Buzzer
• LED
• Roj teeb - 9V

Kauj Ruam 2: Circuit Schematic & Ua Haujlwm

Ua hauj lwm

Daim duab qhia chaw ua tiav rau Tsis Siv Neeg Laj Kab Teeb nrog Tswb yog qhia saum toj no. LDR tau muab tso rau pem hauv ntej ntawm lub qhov rooj nkag thiab lub hwj chim siv los kho qhov rhiab ntawm lub cuab yeej. Koj tseem tuaj yeem ntxiv qhov hloov pauv ntawm tus lej tsis zoo ntawm lub roj teeb thiab LDR tus pin pin los tswj qhov kev nyab xeeb no tus kheej.

Ntawm no, op-amp IC tau siv los ua tus ntsuas hluav taws xob sib piv thiab 555 lub sijhawm IC tau muab tso rau hauv qhov ua haujlwm zoo. LDR thiab potentiometer tab tom tsim hluav taws xob faib hluav taws xob. Qhov tsim tawm ntawm qhov kev faib hluav taws xob faib no yuav hloov pauv raws li qhov pom kev ntawm lub teeb poob ntawm LDR. Tus faib tau txuas nrog rau tus pin inverting ntawm Op-amp IC. Tus pin tsis hloov pauv tau txuas nrog cov khoom siv los ntawm 5.7Kohm resistor, yog li tus nqi hluav taws xob ntawm qhov tsis hloov pauv tau tsau. Koj tuaj yeem hloov qhov kev tawm tsam no nrog 10K lub zog loj los kho qhov hluav taws xob raws li qhov xav tau.

Peb tuaj yeem hloov kho qhov ua tau zoo ntawm lub cuab yeej los ntawm kev siv lub zog potentiometer VR1 txuas nrog hauv koob nrog LDR. Thaum qhov hluav taws xob ntawm qhov tsis hloov pauv tau ntau dua lossis sib npaug rau qhov ntsuas qhov ntsuas qhov tso tawm (ntawm tus lej 6) ntawm op-amp IC tso zis (PIN 6) mus siab. Kawm paub ntau ntxiv txog kev ua haujlwm ntawm op-amp los ntawm kev ua raws ntau yam kev sib tw op-amp raws.

Raws li daim duab qhia chaw, thaum LDR pom ib qho haujlwm twg qhov tso tawm ntawm Op-amp IC mus qis thiab PNP transistor T1 pib ua. Yog li ntawd, LED pib ci ntsa iab thiab 555 timers IC tau tshwm sim. Ntawm no, 555 timer IC nyob hauv hom Astable thiab lub sijhawm tam sim no ncua los ntawm R3, R5, thiab C1.

Yog li thaum twg qee tus neeg lossis cov khoom nkag mus rau hauv qhov chaw txwv, nws cov duab ntxoov ntxoo yuav hnov los ntawm LDR thiab lub Circuit Court ua rau lub tswb nrov.

Kauj Ruam 3: PCB Tsim

Daim duab saum toj no qhia txog PCB tsim ntawm Tsis Siv Neeg Lub Teeb Laj Kab Circuit nrog Tswb siv Eagle software.

Parameter txiav txim siab rau PCB tsim

1. Kab dav tuab yog yam tsawg 8 mil.

2. Qhov sib txawv ntawm lub dav hlau tooj liab thiab tooj liab yog qhov tsawg kawg yog 8 lab.

3. Qhov sib txawv nruab nrab ntawm txoj kab rau kab laum yog yam tsawg kawg ntawm 8 mil.

4. Qhov me me qhov loj me yog 0.4 hli

5. Txhua txoj kab uas muaj txoj hauv kev tam sim no xav tau cov kab tuab.

Kauj Ruam 4: Kev tsim cov PCB

Raws li kuv cov neeg nyeem feem ntau yuav paub tias kuv ib txwm mus rau LIONCIRCUITS. Lawv muab PCBs zoo ntawm tus nqi tsim nyog. Tsis tas li, thauj dawb hauv INDIA.

Kuv muaj kuv Gerber npaj thiab tos rau cov laug cam tsim los sau PART-2 ntawm cov lus qhia no.

Thov xa xov rau kuv yog tias koj xav tau cov ntaub ntawv Gerber.