TBP-I2C-H04

TB-SERIES DIWELL | Alldatasheet

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• Manufacturer or author: TKLee
• PDF pages: 5

Technical content

TB(P) Series Specification Non-contact Infrared Temperature Sensor Page 1 of 5 1.0.0

Ordering Information

TB□ - I2C - H◇◇ package code P pcb type sensor only lens code FOV 04 3.814° 08 7.16° * TB-I2C-H04: Sensor only, FOV=3.814° * TBP-I2C-H08: pcb type, FOV=7.16° Product Specifications laboratory temperature conditions: 25℃. Parameter min Typ Max Unit Supply voltage TB 2.4 3.3 3.6 V TBP 3 3.3 5 V Supply current 1.2 mA Filter type F5.5 (LWP cut on 5.5㎛) Object temperature range -20 380 ℃ Operating temperature -20 70 ℃ IR refresh rate 10 Hz Accuracy(*) ±2 % Resolution digital 0.01 ℃ Emission coefficient 0.1 0.97 1.0  Standard start-up time 200 ms Stabilization time 1 min SCL frequency 10 100 KHz Weight TB H04: 1.83g , H08: 1.60g TBP (without pin header) H04: 2.25g , H08: 2.12g Communication interface I2C Relative humidity 95% Max. non-condensing *: ±2% of reading or ±2℃ whichever is greater. Accuracy is only effective if the object is fully covered by the sensor's FOV and applicable to stable temperature conditions. Dimensions / Pin Configuration unit: mm - TB series Bottom view TB-I2C-H08 TB-I2C-H04 - TBP series Top view TBP-I2C-H08 TBP-I2C-H04 No. TB series TBP series

1 SCL VIN(3~5V)

2 SDA GND

3 3.3V SCL

4 GND SDA

The FOV determines the size of the infrared measurement area according to the distance. unit: mm Angle FOV 7.16° 2 ⅹ tan(7.16° 2ൗ ) ⅹ distance(mm) + 6.75 (mm) 3.814° 2 ⅹ tan(3.814° 2ൗ ) ⅹ distance(mm) + 8 (mm) Accessories 2.54mm pitch pin header (TBP series only) 1 pc

TB(P) Series Specification Non-contact Infrared Temperature Sensor Page 2 of 5 1.0.0 Typical application schematics - TB series (External pull-up resistor required) - TBP series(No external resistor required. 1.5㏀ pull-up resistor applied) SMBus compatible 2-wire protocol - The TB(P) series supports a 2 wire serial protocol. And the TB(P) only supports two protocols on standard SMBus interface. Supported commands are: Read Word, Write Word Functional description The TB(P) sensor module can only be used as a slave device. Maximum number of devices on one bus is 127, higher pull-up currents are recommended for higher number of devices, faster bus data transfer rates, and increased reactive loading of the bus. If the access to the device is a read operation it will respond with 16 data bits and 8 bit PEC only if its own slave address. Bus Protocol The TB(P) sensors are preset to address 0x3A by default. 1 7 1 1 8 1 1 S Slave Address Wr A Data Byte A P S Start Condition Sr Repeated Start Condition Rd Read (bit value of 1) Wr Write (bit value of 0) A Acknowledge(this bit can be 0 for ACK and 1 for Nack) S Stop condition PEC Packet Error Code(*) Master-to-Slave Slave-to-Master * The PEC calculation includes all bits except the START, REPEATED START, STOP , ACK, and NACK bits. The PEC is a CRC-8 with polynomial X8+X2+X1+1. The MSB(Most Significant Bit) of every byte is transferred first. Packet Error Code(PEC) Calculation A packet error checking mechanism according to SMBus specification version 1.1 is implemented. The packet error checking of SMBus devices uses an 8-bit cyclic redundancy check (CRC-8) to calculate the PEC. The polynomial used is C(x)= 100000111 (= x8 + x2 + x + 1) . The PEC calculation includes all bytes in the transmission, including address, command and data. It does not include ACK, NACK, START, STOP bits. Refer to the Arduino example code for detailed PEC calculation. Read Word 1 7 1 1 8 1 1 7 1 1 S Slave Address Wr A Command Address(*) A Sr Slave Address Rd A 8 1 8 1 8 1 1 ∙∙∙ Data Byte Low A Data Byte High A PEC A P * Command Address configures Register Name Command Address R/W Ambient 0x06 R Object 0x07 R Emissivity correction coefficient 0x24 R/W Slave Address 0x2E R/W Any device will respond to address zero The MSB of the temperature data is an error flag (active high). Please note after POR additional delay is needed before first reading can be started. - Read operation flow diagram Oscilloscope waveform image 1. (Read Object) Oscilloscope waveform image 2. (Read Ambient)

TB(P) Series Specification Non-contact Infrared Temperature Sensor Page 3 of 5 1.0.0 - code example read Object temperature 0x07 0. power on & wait for sensor initialization(≥200ms) 1. Send START bit 2. Send 0x74 : [Slave Address(0x3A by default) + Wr(0)] 3. ACK from Slave 4. Send Command : 0x07 (Object) [ Ambient: 0x06 ] 5. ACK from Slave 6. Send repeated Start 7. Send 0x75 : [Slave Address(0x3A) + Rd(1)] 8. ACK from slave 9. Read Data Byte Low (Send ACK) 10. Read Data Byte High (Send ACK) 11. Read PEC (Send ACK or NACK) 12. Send Stop bit 13. Wait >100ms & repeat 1…13 Object Temperature To To is the object temperature derived from thermopile and ambient sensor outputs as absolute (Kelvin) temperature 𝑇௢൤°K൨ = 𝑇௢𝑟𝑒𝑔 × 0.02 Please note that 1LSB corresponds to 0.02°C and the MSB bit is error flag (if “1” then error). Maximum register value is 0x7FFF - maximum possible value returned by TB(P) The result is calculated by following expressions (valid for both To and Ta): 1. Convert it to decimal value i.e. 0x3B99 = 15,257d Ambient Temperature Ta The Sensor die temperature is measured with a PTAT element. All the sensors conditioning and data processing is handled on-chip. 𝑇௔൤°K൨ = 𝑇௔𝑟𝑒𝑔 × 0.02 Maximum register value is 0x7FFF. Emissivity Correction Coefficient The TB(P) is calibrated for an object emissivity of 0.97. It can be easily customized by the customer for any other emissivity in the range 0.1…1.0. Factory default 0.97 = 63,568(0xF850) (0.97 *65536) - 1 = 63568.92 round down → 63568 Max 1.00 = 65535(0xFFFF) Write Word 1 7 1 1 8 1 S Slave Address Wr A Command Address A ∙∙∙ 8 1 8 1 8 1 1 ∙∙∙ Data Byte Low A Data Byte High A PEC A P Before changing of cell contents the respective cells need to be erased. Erasing is a writing of zeros to the respective Command Address. After writing operation the device needs 5ms to process the new values. After changing the "Command Address" cell contents, it is strongly recommended to restart the sensor by power off/on. - Write operation flow diagram - code example write Slave Address 0x2E Erasing: 1. Send START bit 2. Send 0x74 : [Slave Address(0x3A by default) + Wr(0)] 3. Send Command : 0x2E 4. Send Data Byte Low : 0x00 (for erasing) 5. Send Data Byte High : 0x00 (for erasing) 6. Send PEC : 0x05 (calculated CRC value) 7. Send STOP bit 8. Wait 5ms Writing : (Slave Address 0x3A → 0x4C) 9. Send START bit 10. Send 0x74 : [Slave Address(0x3A by default) + Wr(0)] 11. Send Command : 0x2E 12. Send Data Byte Low : 0x4C 13. Send Data Byte High : 0x00 14. Send PEC : 0xA2 (calculated CRC value) 15. Send STOP bit 16. Wait 5ms 17. Reset of the sensor (power off/ on) - code example write Emissivity correction coefficient Address 0x24 Erasing: 1. Send START bit 2. Send 0x74 : [Slave Address(0x3A by default) + Wr(0)] 3. Send Command : 0x24 4. Send Data Byte Low : 0x00 (for erasing) 5. Send Data Byte High : 0x00 (for erasing) 6. Send PEC : 0x05 (calculated CRC value) 7. Send STOP bit 8. Wait 5ms Writing : (coefficient → 0xF850) 9. Send START bit 10. Send 0x74 : [Slave Address(0x3A by default) + Wr(0)] 11. Send Command : 0x24 12. Send Data Byte Low : 0x50 13. Send Data Byte High : 0xF8 14. Send PEC : 0x68 (calculated CRC value) 15. Send STOP bit 16. Wait 5ms 17. Reset of the sensor (power off/ on)

TB(P) Series Specification Non-contact Infrared Temperature Sensor Page 4 of 5 1.0.0 Timing The TB(P) meets all the timing specifications of the SMBus. The maximum frequency of the TB(P) SMBus is 100KHz and the minimum is 10KHz. The specific timings in TB(P)’s SMBus are: Timeout L is the maximum allowed time for SCL to be low during communication. After this time the TB(P) will reset its communication block and will be ready for new communication – not more than 27ms; Timeout H is the maximum allowed time for SCL to be high during communication. After this time TB(P) will reset its communication block assuming that the bus is idle (according to the SMBus specification) – not more than 45μs. Tsuac(SD) is the time after the eighth falling edge of SCL that TB(P) will force SDA low to acknowledge the last received byte – not more than 2.5μs. Thdac(SD) is the time after the ninth falling edge of SCL that TB(P) will release the SDA (so the MD can continue with the communication) – not more than 1.5μs. Tsuac(MD) is the time after the eighth falling edge of SCL that TB(P) will release SDA (so that the MD can acknowledge the last received byte) – not more than 1.5μs. Thdac(MD) is the time after the ninth falling edge of SCL that TB(P) will take control of the SDA (so it can continue with the next byte to transmit) – not more than 1.5μs. The indexes MD and SD for the latest timings are used – MD when the master device is making acknowledge; SD when the slave device is making acknowledge. SMBus timing Bit transfer Bit transfer on SMBus The data on SDA must be changed when SCL is low (min 300ns after the falling edge of SCL). The data is fetched by both MD and SDs on the rising edge of the SCL. Products handling precaution ※ When it comes to dust removal by air, the best method is to use a blower, and to avoid using compressed air. ※ Do not press the lens with your hands or any other object. ※ Do not scratch the lens surface with sharp objects. ※ Voluntary disassembly and modification of the product is prohibited. ※ Avoid direct sunlight, chemical substance, heat or fire. ※ Water resistance is not guaranteed. Tutorial 1(Arduino UNO - TB(P)-I2C-H08) - Requirements Hardware: Arduino Uno, TB(P) series Sensor Software: Arduino IDE. - Connection Diagram - TB-I2C-H08 - TBP-I2C-H08 - Sample code https://www.diwellshop.com/web/en/TB/TB_example.zip - Expected Results.

TB(P) Series Specification Non-contact Infrared Temperature Sensor Page 5 of 5 1.0.0 Tutorial 2(Raspberry Pi 2 - TB(P)-I2C-H08) - Requirements Hardware: Raspberry Pi 2 , TB(P) series Sensor Software: wiringPi library - Connection Diagram - TB-I2C-H08 - TBP-I2C-H08 - Sample code https://www.diwellshop.com/web/en/TB/TB_example.zip - Expected Results. PC Software The program runs in the Windows 10 environment. It is not guaranteed to be used on other OS. For more information, refer to the Test Board manual. https://www.diwellshop.com/web/en/TB/TB_Testboard_en.pdf Additional information Manufacturer: DIWELL Electronics Co., Ltd. (South Korea) Technical support: mailto:expoeb2@diwell.com, mailto:dsjeong@diwell.com

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