Raspberry Pi - TMP007 Infrared Thermopile Sensor Python Qhia: 4 Kauj Ruam

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

TMP007 yog lub ntsuas hluav taws xob infrared thermopile uas ntsuas qhov ntsuas kub ntawm ib yam khoom yam tsis muaj kev sib cuag nrog nws. Lub zog hluav taws xob hluav taws xob tso tawm los ntawm cov khoom hauv thaj chaw sensor tau nqus los ntawm cov thermopile ua ke hauv lub ntsuas. Qhov ntsuas hluav taws xob thermopile yog digitized thiab pub raws li kev nkag mus rau lub cav ua lej. Lub tshuab ua lej suav nrog no suav qhov ntsuas kub. Nov yog nws qhov kev ua haujlwm pom nrog Raspberry Pi siv tus lej nab npawb.

Kauj Ruam 1: Yam Koj Xav Tau..

1. Raspberry Pi

2. TSM007

3. I²C Cable

4. I²C Shield rau Raspberry Pi

5. Ethernet Cable

Kauj Ruam 2: Kev Sib Txuas:

Siv I2C daim thaiv rau raspberry pi thiab maj mam thawb nws hla gpio pins ntawm raspberry pi.

Tom qab ntawd txuas ib qho kawg ntawm I2C cable rau TMP007 sensor thiab lwm qhov kawg rau I2C daim ntaub thaiv.

Kuj txuas Ethernet cable rau pi lossis koj tuaj yeem siv WiFi module.

Kev sib txuas tau qhia hauv daim duab saum toj no.

Kauj ruam 3: Code:

Tus nab npawb nab npawb rau TMP007 tuaj yeem rub tawm los ntawm peb GitHub chaw cia khoom- DCUBE Store Community.

Nov yog qhov txuas.

Peb tau siv SMBus lub tsev qiv ntawv rau sej code, cov kauj ruam rau nruab SMBus ntawm raspberry pi tau piav qhia ntawm no:

pypi.python.org/pypi/smbus-cffi/0.5.1

Koj tseem tuaj yeem luam cov cai los ntawm no, nws tau muab raws li hauv qab no:

# Faib nrog daim ntawv tso cai yuav dawb.

# Siv nws txhua txoj hauv kev uas koj xav tau, muaj txiaj ntsig lossis pub dawb, muab nws haum rau hauv daim ntawv tso cai ntawm nws cov haujlwm sib txuam.

# TSWJ 007

# Txoj cai no yog tsim los ua haujlwm nrog TMP007_I2CS I2C Mini Module muaj nyob hauv DCUBE Store.

ntshuam smbus

lub sij hawm ntshuam

# Tau I2C npav

npav = smbus. SMBus (1)

# TMP007 chaw nyob, 0x40 (64)

# Xaiv kev teeb tsa sau npe, 0x02 (02)

# 0x1540 (5440) Nrhav Kev Hloov Pauv Hloov pauv, Hom sib piv

data = [0x1540] bus.write_i2c_block_data (0x40, 0x02, cov ntaub ntawv)

sijhawm.s pw (0.5)

# TMP007 chaw nyob, 0x40 (64)

# Nyeem cov ntaub ntawv rov qab los ntawm 0x03 (03), 2 bytes

# cTemp MSB, cTemp LSB

cov ntaub ntawv = bus.read_i2c_block_data (0x40, 0x03, 2)

# Hloov cov ntaub ntawv mus rau 14-ntsis

cTemp = ((cov ntaub ntawv [0] * 256 + (cov ntaub ntawv [1] & 0xFC)) / 4)

Yog tias cTemp> 8191:

TSI -16384

cTemp = cTemp * 0.03125

fTemp = cTemp * 1.8 + 32

# Cov ntaub ntawv tso tawm rau lub vijtsam

luam "Cov Khoom Kub hauv Celsius: %.2f C" %cTemp

luam tawm "Lub Hom Phiaj Kub hauv Fahrenheit: %.2f F" %fTemp

Kauj Ruam 4: Cov ntawv thov:

TMP007 pom nws daim ntawv thov hauv cov kab ke uas yuav tsum tsis ntsuas qhov ntsuas kub. Lawv tau ua haujlwm hauv lub khoos phis tawj thiab ntsiav tshuaj, roj teeb thiab lwm yam. Nws qhov kev ua tau zoo dua hauv kev ntsuas qhov ntsuas kub yam tsis tau ntsib nrog cov khoom tiag muab nws ib qho ntxiv rau nws cov ntawv thov ntau yam.