Cooled Focal Plane Infrared (FPI) Thermal Imaging Modules

Characteristics

1)Type: 640 x 512 (RC006A type ROIC) (compatible with Scorpio MW)

2)Wavelength: 3 to 5µm;

3)Resolution: 640 x 512

4)Image spacing: 15µm;

5)Detector equivalent noise temperature difference NETD: ≤18mK (detector test report)

Frame rate: Full-size maximum frame rate 117Hz

Integration time adjustable range: 1μs～100ms

Readout mode of the current workspace of the component is selected through the RS422 communication interface

1)Input voltage:

a)Imaging board input power: DC 12V/1A;

b)Chiller input power: DC 24V/3A;

2)Power consumption:

a)Imaging board power consumption: ≤ 7W @ 25℃, stable working condition;

b)Chiller power consumption: ≤ 8W @ 25℃, stable working condition;;

3)Digital video output: Camera Link, 8bit/16bit, Base, 1TAP /

4)Analog video output: PAL black and white

5)Manipulation and communication: RS422 interface full duplex, see communication protocols for specific details

Weight: ≤ 100g

Component reliability index: MTBF ≥ 6000H (design guarantee)

Specific use cases for the CRC algorithm and implementation code

----------------crc code start-------------------

unsigned short GetCrc_16(unsigned char *pData, int nLength, unsigned short init, const unsigned short *ptable)

{

    unsigned short cRc_16 = init;

    unsigned char  temp;

    while (nLength-- > 0) {

        temp   = cRc_16 & 0xFF;

        cRc_16 = (cRc_16 >> 8) ^ ptable[(temp ^ *pData++) & 0xFF];

    }

    return cRc_16;

}

uint16_t CRC_GetModbus16(unsigned char *pdata, int len)

{

    uint16_t CRC;

    // CRC-16 reverse lookup table

    const unsigned short g_McRctable_16[256] = {

        0x0000, 0x1189, 0x2312, 0x329B, 0x4624, 0x57AD, 0x6536, 0x74BF, 0x8C48, 0x9DC1, 0xAF5A, 0xBED3,

        0xCA6C, 0xDBE5, 0xE97E, 0xF8F7, 0x1081, 0x0108, 0x3393, 0x221A, 0x56A5, 0x472C, 0x75B7, 0x643E,

        0x9CC9, 0x8D40, 0xBFDB, 0xAE52, 0xDAED, 0xCB64, 0xF9FF, 0xE876, 0x2102, 0x308B, 0x0210, 0x1399,

        0x6726, 0x76AF, 0x4434, 0x55BD, 0xAD4A, 0xBCC3, 0x8E58, 0x9FD1, 0xEB6E, 0xFAE7, 0xC87C, 0xD9F5,

        0x3183, 0x200A, 0x1291, 0x0318, 0x77A7, 0x662E, 0x54B5, 0x453C, 0xBDCB, 0xAC42, 0x9ED9, 0x8F50,

        0xFBEF, 0xEA66, 0xD8FD, 0xC974, 0x4204, 0x538D, 0x6116, 0x709F, 0x0420, 0x15A9, 0x2732, 0x36BB,

        0xCE4C, 0xDFC5, 0xED5E, 0xFCD7, 0x8868, 0x99E1, 0xAB7A, 0xBAF3, 0x5285, 0x430C, 0x7197, 0x601E,

        0x14A1, 0x0528, 0x37B3, 0x263A, 0xDECD, 0xCF44, 0xFDDF, 0xEC56, 0x98E9, 0x8960, 0xBBFB, 0xAA72,

        0x6306, 0x728F, 0x4014, 0x519D, 0x2522, 0x34AB, 0x0630, 0x17B9, 0xEF4E, 0xFEC7, 0xCC5C, 0xDDD5,

        0xA96A, 0xB8E3, 0x8A78, 0x9BF1, 0x7387, 0x620E, 0x5095, 0x411C, 0x35A3, 0x242A, 0x16B1, 0x0738,

        0xFFCF, 0xEE46, 0xDCDD, 0xCD54, 0xB9EB, 0xA862, 0x9AF9, 0x8B70, 0x8408, 0x9581, 0xA71A, 0xB693,

        0xC22C, 0xD3A5, 0xE13E, 0xF0B7, 0x0840, 0x19C9, 0x2B52, 0x3ADB, 0x4E64, 0x5FED, 0x6D76, 0x7CFF,

        0x9489, 0x8500, 0xB79B, 0xA612, 0xD2AD, 0xC324, 0xF1BF, 0xE036, 0x18C1, 0x0948, 0x3BD3, 0x2A5A,

        0x5EE5, 0x4F6C, 0x7DF7, 0x6C7E, 0xA50A, 0xB483, 0x8618, 0x9791, 0xE32E, 0xF2A7, 0xC03C, 0xD1B5,

        0x2942, 0x38CB, 0x0A50, 0x1BD9, 0x6F66, 0x7EEF, 0x4C74, 0x5DFD, 0xB58B, 0xA402, 0x9699, 0x8710,

        0xF3AF, 0xE226, 0xD0BD, 0xC134, 0x39C3, 0x284A, 0x1AD1, 0x0B58, 0x7FE7, 0x6E6E, 0x5CF5, 0x4D7C,

        0xC60C, 0xD785, 0xE51E, 0xF497, 0x8028, 0x91A1, 0xA33A, 0xB2B3, 0x4A44, 0x5BCD, 0x6956, 0x78DF,

        0x0C60, 0x1DE9, 0x2F72, 0x3EFB, 0xD68D, 0xC704, 0xF59F, 0xE416, 0x90A9, 0x8120, 0xB3BB, 0xA232,

        0x5AC5, 0x4B4C, 0x79D7, 0x685E, 0x1CE1, 0x0D68, 0x3FF3, 0x2E7A, 0xE70E, 0xF687, 0xC41C, 0xD595,

        0xA12A, 0xB0A3, 0x8238, 0x93B1, 0x6B46, 0x7ACF, 0x4854, 0x59DD, 0x2D62, 0x3CEB, 0x0E70, 0x1FF9,

        0xF78F, 0xE606, 0xD49D, 0xC514, 0xB1AB, 0xA022, 0x92B9, 0x8330, 0x7BC7, 0x6A4E, 0x58D5, 0x495C,

        0x3DE3, 0x2C6A, 0x1EF1, 0x0F78};

    CRC = GetCrc_16(pdata, len, 0x0000, g_McRctable_16);

    CRC = 0xFFFF ^ CRC;

    return (CRC);

}

----------------crc code end-------------------

Algorithmic use case：

----------------usage code start-------------------

unsigned char MessageBuffer[32];

…

…

MessageBuffer[0]  = 0x5A;

MessageBuffer[1]  = 0x21;

MessageBuffer[2]  = SYSTEM_Status;

MessageBuffer[3]  = XX;

…

…

CRC               = CRC_GetModbus16(MessageBuffer, 30);

MessageBuffer[30] = (uint8_t)(CRC & 0xFF);

MessageBuffer[31] = (uint8_t)((CRC >> 8) & 0xFF);

…

UART_SEND(MessageBuffer, 32);

----------------usage code end-------------------