SMH-01B01-01

DATASHEET SEARCH SITE | WWW.ALLDATASHEET.COM

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 13

Technical content

SMH-01B01-01 PythPits Series Infrared Array Sensor Module 1. OVERVIEW The PythPits-series SMH-01B01-01 is a thermopile-typ e infrared array sensor module that features an 8×8 array of sensor elements to detect and convert the infrared energy within an area to a signal for output. It is equipped with a Si-lens optical system, and f eatures an MCU with built-in A/D converter that gen erates digital output, on an I 2C interface, of both the converted emission tempera ture of each sensor element and the ambient temperature from a temperature sensor mounted on the sensor chip. 2. FEATURES 8×8 structure, 64-element array Si lens optical system, approximately 35° total fie ld-of-view angle (between peak value of elements on both sides) Gain switching for measurement extension up to 250° C using variable-gain preamplifier (25°C ambient temperature environment) Built-in auto range function automatically adjusts the gain to match the temperature within the area Switchable frame measurement speed: 4, 2, 1 fps Switchable voltage output and emission temperature conversion output Changeable data readout order: top/bottom reversal and left/right reversal to support horizontal/verti cal rotation SMBUS standard PEC code support Emission temperature resolution: ±1.5°C Supply voltage: 5V ± 5% Current consumption: 5 mA (typ.) 3. BLOCK DIAGRAM 㼂㻿㻿 㻿㻰㻭 㼂㻰㻰 㻿㻯㻸 㻹㻯㼁 㼣㼕㼠㼔 㻭㻛㻰㻙㻯 㻤㼤㻤 㼀㼔㼑㼞㼙㼛㼜㼕㼘㼑 㻭㼞㼞㼍㼥㻌㻿㼑㼚㼟㼛㼞 㻭㻹㻼 㻿㼕㻙㻸㼑㼚㼟 㻔㻵㼚㼒㼞㼍㼞㼑㼐㻌㻵㼚㼜㼡㼠㻕 㻿㼑㼚㼟㼛㼞㻌㻻㼡㼠㼜㼡㼠㼟㻔㼀㼍㻘㻵㻾㻕 㻿㼑㼚㼟㼛㼞㻌㻯㼛㼚㼠㼞㼛㼘㻌 Figure 3-1. Block Diagram

SMH-01B01-01 PythPits Series Infrared Array Sensor Module 4. PIN LAYOUT Connecter: S4B-ZR-SM4A Top view Figure 4-1. Pin layout diagram 5. PIN DESCRIPTION No. Name I/O Function

1 VSS 䇲 Ground pin

2 VDD 䇲 Supply pin

3 SCL I/O I2C interface clock input/output pin *1

4 SDA I/O I2C interface data input/output pin

*1: SCL is an output during clock stretching. 6. ABSOLUTE MAXIMUM RATINGS Parameter Symbol Conditions Rating Unit Notes Supply voltage range V DD Between VDD - VSS -0.3 to 6.0 V *1 Input voltage range V IN Between input - VSS -0.3 to VDD+0.3 V *1, *2 Output voltage range V IN Between output - VSS -0.3 to VDD+0.3 V *1, *2 Maximum sink current I SNK Output pin = Low 10 mA Storage temperature T STG -40 to 100 °C *1: Absolute maximum ratings are values not to be e xceeded, not even momentarily. If a rating is excee ded, there is a risk of deterioration in characteristics and decrease in reliability. *2: VDD value is the operating voltage rating of the VDD pin in the recommended operating conditions.

SMH-01B01-01 PythPits Series Infrared Array Sensor Module 7. RECOMMENDED OPERATING CONDITIONS Parameter Symbol Conditions MIN TYP MAX Unit Supply voltage VDD 4.75 5.00 5.25 V Operating temperature Ta No condensation *1 5 25 45 °C *1: Operation is supported until the upper storage temperature from -20°C, but emission temperature co rrection cannot be confirmed if these ratings are exceeded. 8. ELECTRICAL CHARACTERISTICS 8.1. DC Characteristics (Reference circuit under recommended operating conditions, unless otherwise noted) Parameter Symbol Conditions MIN TYP MAX Unit Current consumption IDD VDD=5.25V 5.0 10.0 䡉A High-level input voltage VIH SDA, SCL 0.7V DD VDD V Low-level input voltage VIL SDA, SCL 0 0.3V DD V High-level input leakage current ILH SDA, SCL (V IN =V DD ) 1.0 µA Low-level input leakage current ILL SDA, SCL (V IN =0V) 1.0 µA Low-level output voltage VOL SDA,SCL =Low output, 5mA 0 0.6 V *1: SCL is an output during clock stretching.

SMH-01B01-01 PythPits Series Infrared Array Sensor Module 8.2. AC Characteristics 8.2.1. Start/Stop Condition Bit Timing (Reference circuit under recommended operating conditions, unless otherwise noted) Parameter Symbol Conditions MIN TYP MAX Unit Start condition setup time tSU:STA SCL, SDA pins 600 ns Start condition hold time tHD:STA SCL, SDA pins 600 ns Stop condition setup time tSU:STO SCL, SDA pins 600 ns Stop condition hold time tHD:STO SCL, SDA pins 600 ns

SMH-01B01-01 PythPits Series Infrared Array Sensor Module 8.2.2. Bus Data Timing (Reference circuit under recommended operating conditions, unless otherwise noted) Parameter Symbol Conditions MIN TYP MAX Unit SCL clock frequency fSCL 400 kHz SCL clock low-level cycle time tLOW 1300 ns SCL clock high-level cycle time tHIGH 600 ns SCL, SDA rise time 1 tr1 fCLS > 100 䡇Hz 20+0.1×C B 300 ns SCL, SDA rise time 2 tr2 fCLS 䍸 100 䡇Hz 1000 ns SCL, SDA fall time tf 20+0.1×C B 300 ns SCL, SDA data setup time 1 tSU1:DAT fCLS > 100 䡇Hz 100 ns SCL, SDA data setup time 2 tSU2:DAT fCLS 䍸 100 䡇Hz 250 ns SCL, SDA data hold time tHD:DAT Data input 0 900 ns SCL, SDA data valid time tVD:DAT Data output 900 ns SCL, SDA bus capacitance CB 400 pF 8.3. Temperature Conversion Characteristics (1) Emission temperature accuracy : Typ. ± 3.0° (2) Emission temperature resolution: Typ. ± 1.5° Measured in NPC measurement environment of 50°C bla ck body temperature and approximately 25°C ambient temperature, with field of view (FOV) of all sensor elements irradiated by infrared rays from the black body. Note) The temperature conversion characteristics ar e affected by power supply noise, changes in temper ature due to convection of the air, and temperature distr ibution across the target object. Accordingly, thor ough evaluation should be conducted in the usage environment.

SMH-01B01-01 PythPits Series Infrared Array Sensor Module 9.1.3. Clock stretching and wait time after power on (1) Clock stretching Clock stretching pauses a transaction by holding the SCL line Low. (2) Wait time from power on After the power is applied, the I 2C I/F is able to start after 150ms have elapsed. It takes a further 250ms until the data of the first frame has stabilized. Accordingly, it takes 400ms after power is applied to obtain valid IR data (temperature/voltage) output. 9.1.4. 1st Byte Data The first byte of data after the Start condition comprises the address and the read/write bit. Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 AD7 AD6 AD5 AD4 AD3 AD2 AD1 R/W (3) This device uses the following address. AD(7:1) 0001-010B: Configuration and data read ou t 1010-0xxB: (Reserved) (4) Read/Write R/W 1: Data read 0: Data write 9.1.5. Command Data (1) Command = 00h Write Only Data bytes: None Stop operation: Stops temperature measurement oper ation. * In one-shot mode, temperature measurement stops a utomatically after 1 frame measurement, without needing this command. (2) Command= 01h Write Only Data bytes: None Start operation: Starts temperature measurement op eration. (3) Command=02h Read Only Data bytes: 128 bytes (2×64 elements) Read the infrared output data (temperature/voltage). V oltage is in mV units. Temperature output is 10 ti mes the Celsius value, expressed in 2s complement format. If the sensor output amplitude exceeds the maximum value that can be converted by the A/D converter, a value of –10000 (D8F0h) is output. (4) Command= 03h Read Only Data bytes: 2 bytes Read the ambient temperature output data (temperature/voltage). V oltage is in mV units. Temperature output is 10 ti mes the Celsius value, expressed in 2s complement format.

SMH-01B01-01 PythPits Series Infrared Array Sensor Module (5) Command=F0h Read/Write Data bytes: 1 byte Specify the element read order. Sets the read order (1 to 64) of the sensor elements. TP_READ_ORDER Bit [7:3]: Tied to 0 (Reserved). Bit 2: Exchanges the vertical and horizontal directions. 0: Read elements from vertical direction to hori zontal direction. 1: Read elements from horizontal direction to ve rtical direction. Bit 1: Reverses the read order in the horizontal direction. 0: Natural order (TP8, TP16 … TP64 rows) 1: Reverse order (TP64, TP56 … TP8 rows) Bit 0: Reverses the read order in the vertical direction. 0: Natural order (TP1, TP2 … TP8 columns) 1: Reverse order (TP8, TP7 … TP1 columns) * If all 3 bits are set to “1”, it first reverses t he horizontal direction and vertical direction, and then it exchanges the vertical and the horizontal direction. (F0h)=00h: Normal output (F0h)=01h: Output with top/bottom reversed (F0h)=02h: Output with left/right reversed (F0h)=03h: Output with 180° rotation (F0h)=04h: Output with image reflected across TP1 and TP64 diagonal axis (F0h)=05h: Output with 90°counterclockwise rotation (F0h)=06h: Output with 90°clockwise rotation (F0h)=07h: Output with image reflected across TP8 and TP57 diagonal axis (6) Command=F1h Read/Write Data bytes: 1 byte Specify amplifier gain. 0=200, 1=500, 2=700, 3=100 0 4=1200, 5=1500, 6=1700, 7=2000 The default value is 7 (gain of 2000). (7) Command=F2h Read/Write Data bytes: 2 bytes Specify emission adjustment value: Sets correction value with fixed decimal point 1 bit below MSB (0.00003 to 1.99997). Positive values only. During emission temperature conversion, the object’s energy coefficient is used as-is in the multiplication. The default value is 1(8000h). (8) Command=F7h Read/Write Data bytes: Current state 1 byte only Read: Status read Bit 7: Monitor operation. 1: Measuring 0: Stopped Bit 6: Infrared output format. 1: V oltage 0: Temper ature Bit 5: Ambient temperature output format 1: V oltage 0: Temperature Bit 4: Gain setting 1: Auto adjust 0: Set manually Bit 3: PEC code 1: Enable 0: Disable Bit 2: (Reserved: Default is 0) Bit [1:0]: Frame rate 0=(Off), 1=1fps, 2=2fps, 3=4f ps

SMH-01B01-01 PythPits Series Infrared Array Sensor Module 10/ Write: Configuration data Bit 7: Operating mode 1: Continuous 0: One-shot mode Bit 6: Infrared output format 1: V oltage 0: Tempera ture Bit 5: Ambient temperature output format 1: V oltage 0: Temperature Bit 4: Gain setting 1: Auto adjust 0: Set manually Bit 3: PEC code 1: Enable 0: Disable Bit 2: (Reserved: Default is 0) Bit [1:0]: Frame rate 0=(No change), 1=1fps, 2=2fps , 3=4fps * Default value is 8Ah (settings underlined abov e). 9.1.6. PEC Code If the PEC code bit of configuration data is enabled, Polynomial generation (CRC8) 㸸Adds remainder derived from G(x)=x8+x2+x1+x0 to the output data from the module for error detection. It does not perform error checking for input data to the module. 9.1.7. Automatic Gain Adjustment Function The gain is adjusted automatically when bit 4 of the Configuration Data (Command= 0F7h) is set to “1”. (1) When power is applied initially, the maximum ga in of 2000 is set by default. (2) If the output from any sensor element exceeds t he maximum level of the internal A/D converter during measurement, the gain is initially switched to the minimum gain of 200. (3) During measurement of the subsequent frame, the reference level is set to approximately half the maximum level of the A/D converter. If the measurem ent values of all sensor elements do not exceed the reference value, the range is increased one step at a time. (Gain of 200 500 700 1000 1200 1500 1700 2000) The increase in range stops when at least one sensor element exceeds the reference level AND all elements do not exceed the maximum level at the current range setting. If the output exceeds the maximum level during rang e switching, the gain is reduced to the minimum gain of 200 in a single action (the gain is not reduced one step at a time). When bit 4 of the Configuration Data (Command= 0F7h) is set to “0”, the gain is fixed and the gain set ting switches to manual adjustment mode.

SMH-01B01-01 PythPits Series Infrared Array Sensor Module 11/ 10. ELEMENT ARRAY and FIELD-OF-VIEW IMAGE Figure 10-1. Field-of-view image diagram

SMH-01B01-01 PythPits Series Infrared Array Sensor Module 13/ 13. PRECAUTIONS FOR USE 13.1. Safety Precautions Observe the following precautions at all times to prevent an accident. Do not exceed the ratings, environmental conditions, and other specifications ranges. Connect terminal connections correctly after checking the terminal locations. The sensor module has several failure modes, includi ng short-circuit between terminals, open-circuit terminals, device temperature rise (for example, du e to power supply short-circuit), temperature outpu t error, and I/F communications error. In applications requi ring a high degree of reliability, take scrupulous care and apply fail-safe techniques, including adding redundancy and malfunction prevention. Do not dismantle and reassemble the sensor module. The execution of commands not described in this spec ifications document may cause a malfunction or deterioration in performance. 13.2. Notes about Device Principles An infrared array sensor is a sensor for detecting the level of infrared radiation, not a direct measu rement of the temperature. The emission temperature of an object within the viewing angle is determined based on the detected infrared energy. In addition, the temperature deter mination may also be significantly affected by chan ges in temperature of the module itself. Before use, always conduct a thorough evaluation under actual conditions to check device operation. In particular, the temperature determination may be adversely affected in the following cases. When the sensor and measurement object are extremel y close to any surrounding objects that have a temperature difference. When the emissivity of the measurement object is low and the impact of reflections from other objects is high. When the measurement object is made of a material t hat exhibits variations in emissivity due to the an gle facing the sensor, for example. When strong infrared sources, such as direct sunlight or flames, are scattered into the sensor. When the uniformity of the surrounding environment temperature is affected, such as when a breeze of different temperature to the sensor lens barrel hits the back of the sensor substrate. When the sensor body temperature is changing. When a material which does not pass far-infrared adheres to the sensor lens. (If a foreign substance adheres to the sensor lens, gently wipe it off using a soft cloth or a cloth m oistened with alcohol.) 13.3. Precautions on Usage Environment Note that use in the following cases may lead to a deterioration in performance. When the lens or the lens barrel is subjected to strong vibration or strong impact. When the sensor is used in a corrosive gas environment. When the sensor is stored or used in a high-temperature, high-humidity environment over a long term period. When dew condensation or freezing occurs. When submerged in water or covered in dust. (Take appropriate waterproof and dustproof countermeasures.) 13.4. Precautions during Assembly and Installation This product uses a S4B-ZR-SM4A-TF connector (JST Mfg. Co., Ltd.). Use compatible wiring contacts (SZH-002T-P0.5 or SZH-003T-P0.5) and housing (ZHR-4). Insert and remove the connector under normal temperature (5°C to 35°C) and condensation-free conditions. Insert and remove the connector with the power disconnected. Do not apply excessive mechanical force when inserting/removing the connector. This connector is used for the internal wiring of de vices, and is not to be used for any external wirin g. Precautions should be taken to ensure that regular users cannot touch the connector or wiring. Leave slack in the wiring so that no tension is exerted on the connector. Secure in position so that there is no excessive force applied to the board or lens barrel. Take care not to connect the power supply in the reverse orientation. Doing so may cause failure or a deterioration in performance. Take measures against electrostatic discharge durin g device assembly. Electrostatic discharge may cause device failure.

SMH-01B01-01 PythPits Series Infrared Array Sensor Module 14/ 13.5. Precautions for Use in Target Devices This product is designed and manufactured to the gen erally accepted standards of reliability as expecte d for use in general electronic and electrical equipment, suc h as personal equipment, machine tools, and measure ment equipment. This product is not designed and manufact ured to be used in any other special equipment requ iring extremely high level of reliability and safety, suc h as aerospace equipment, nuclear power control equ ipment, medical equipment, transportation equipment, disaster prevention equipment, or security equipment. If you wish to use this product in equipment requir ing an extremely high level of reliability, please contact our sales department or representative in advance. In the event that this product is used in such equi pment, please take scrupulous care and apply fail-s afe techniques, including redundancy and malfunction pr evention, in order to prevent damage to life, healt h, property, or infrastructure etc. in case there is some malfunction in the product. Please pay your attention to the following points at time of using the products shown in this document. 1. The products shown in this document (hereinafter ”Products”) are designed and manufactured to the g enerally accepted standards of reliability as expected for use in general elec tronic and electrical equipment, such as personal e quipment, machine tools and measurement equipment. The Products are not designe d and manufactured to be used in any other special equipment requiring extremely high level of reliability and safety, such as aerospace equipment, nuclear power control equipment, medical equipment, transportation equipment, disaster prevention equipment, security equipment. The Products are not desi gned and manufactured to be used for the apparatus that exerts harmful influ ence on the human lives due to the defects, failure or malfunction of the Products. If you wish to use the Products in that apparatu s, please contact our sales section in advance. In the event that the Products are used in such apparatus without our prior approval, we assume no responsibility whatsoever for any damages resulting from the use of that apparatus. 2. NPC reserves the right to change the specifications of the Products in order to improve the characteristics or reliability thereof. 3. The information described in this document is presented only as a guide for using the Products. No responsibility is assumed by us for any infringements of patents or other rights of the third parties which may result from its use. N o license is granted by implication or otherwise under any patents or other rights of the third parties. Then, we assume no re sponsibility whatsoever for any damages resulting from that infringements. 4. The constant of each circuit shown in this document is described as an example, and it is not guaranteed about its value of the mass production products. 5. In the case of that the Products in this documen t falls under the foreign exchange and foreign trad e control law or other applicable laws and regulations, approval of the export to be based on those laws and regulations are necessary. Customers are requested appropriately take steps to obtain required permissions or approvals from appropriate government agencies. SEIKO NPC CORPORATION 1-9-9, Hatchobori, Chuo-ku, Tokyo 104-0032, Japan Telephone: +81-3-5541-6501 Facsimile: +81-3-5541-6510 http://www.npc.co.jp/ Email:sales@npc.co.jp DE160631E 2017.7