0.2-60M/ M. Dcc no: EG-QS-T-PM-ST-0115 Form no: EG-QR-T-QA-0003 Date:140915

Transcription

1 This EV-kit (Fig. 1) is designed for user to use PC or MCU communicating with Laser rangefinder with RS232 communication. It provides 1mm or better resolution with 1.5mm accuracy at measuring range up to 60 meters and sample rates up to 7 samples per second. The EV-kit implements a Human Interface Device (HID) class USB device. Software applications in most operation systems can easily read data from HID class devices without the need for custom drivers. This makes it simple to create software that interfaces to the EV-kit from Window or Linux. Fig.1 Fig.2 Range M/ M Accuracy +/- 1.5mm Measurement Rate 0.5~7 Hz (Based on reflectance and environment conditions, the measurement rate changes automatically Operating Temperature 0~40 Storage Temperature -10~50 Interfaces 1) USB B connector, female to host with UART Baud rate 9600/8-N-1. Pin assignment (Fig. 2) 1. Vin: Vcc pin 2. Vur: UART Rx pin, TTL level 3. Vut: UART Tx pin, TTL level 4. Vpe: Power Enable pin, used for system ON (High)and OFF(Low) or can be used as Reset pin 5. GND: Ground pin

2 Characteristics Value Symbol Min Typical Max Unit Voltage Input Vin V Current Input Iin ma UART Rx Logic 1 Vuth V UART Rx Logic 0 Vutl V UART Tx Logic 1 Vurh V UART Tx Logic 0 Vurl V Power Enable Logic 1 Vpeh Vin+0.3 V Power Enable Logic 0 Vpel V System compliance Dos, OS/2, Unix, Xenix, Linux, Windows and Netware Note Customer shall provide OS (operation system version) to check if RS232 data transmission SW available Connection Fig.3 Step 1. Install PL-2303 Driver Installer for RS232 convert board Note: Customer might need to provide OS (operation system) version if error occurs, as we will need to check if RS232 data transmission SW available.

3 Step 2. Connect USB connection Insert RS232convert board to PC USB port, system will automatically shows new device found; Select automatic installation Please check COM PORT number once successfully installed. Step 3. Connect RS232 to LRF Step 4. Rs232 software Communication initiate Step 5. Software verification/communication initiate Set Com port to the right connection (port number fund in Step 2) and baud rate to Click Open Com and the connection is initiated if the gray circle turns RED.

4 Now you can start playing with this kit! The measuring data will displayed at the middle blank and the measuring speed will show at the blank followed by Hz. R VER - Read Software version R Type - Read Device Type R ADDR - Read Device Address R SADDR - Set Device address R MSTA - Read System status BEEP ON - Turn on buzzer SINGLE - Single measurement CONT - Continuous measuring STCOUNT -Stop continuous measurement LASON - Laser ON LASOFF - Laser OFF BEEP OFF - Turn off buzzer Master (PC/MCU) Read/Write Initiate Address Command Data 1.. Data N Check Sum End 1 Byte 1 Byte 1 Byte 1 Byte 1 Byte 1 Byte 1 Byte 1 Byte Slave (LRF EV-Kit) Initiate Address Command Data 1.. Data N Check Sum End 1 Byte 1 Byte 1 Byte 1 Byte 1 Byte 1 Byte 1 Byte 1 Byte Initiate: 0xAA End: 0xA8 Address: 0 is master, are slave/devices on the Bus. Master can communicate with all slave devices on the Bus. Data: Some commands might not have response CheckSum: Only 7Bit to avoid conflict with Initiate or End. Highest level set at 0. CheckSum =(Address+Command+Data 1+ +Data n)& 0x7F. 0x01 0x02 0x04 0x41 0x08 0x42 0x43 Remark Read Software version Read Device Type Read slave address Set Slave address Read device error code Laser ON Laser OFF

5 0x44 0x45 0x46 Single measuring Continuous Measuring Stop continuous measuring (Set slave as 0x01) Read SW version 0xAA 0x01 0x01 0x02 0xA8 0xAA 0x01 0x01 0x12 0x05 0xA8 Slave response: Version V1. 2, Integer as 6:4 Bit, and Decimal as 3:0 Bit, Bit7 fixed at 0 Read Device Type 0xAA 0x01 0x02 0x03 0xA8 0xAA 0x01 0x02 0x01 0x04 0xA8 Slave response: Device type is LFR Read Device status 0xAA 0x01 0x08 0x09 0xA8 0xAA 0x01 0x08 0x00 0x09 0xA8 Slave response: 0x00 as Not ready yet; 0x01 as Standby; 0x31 as Error When error shows, we suggest user to reset the system(power Enable pin to low for 200ms than level to High again to see if the system works, if not, please contact Egismos for further service. Read Slave Address 0xAA 0x00 0x04 0x04 0xA8 0xAA 0x01 0x04 0x01 0x06 0xA8 Slave response: Address is 0x01

6 Set Slave Address Master Initiate Address Command Data 1 CheckSum End 0xAA 0x00 0x041 0x02 0x43 0xA8 0xAA 0x02 0x041 0x01 0x44 0xA8 Master command: Set salve Address as 0x02; Slave response: 1-Success,0-Failed Laser ON 0xAA 0x01 0x42 0x43 0xA8 0xAA 0x01 0x42 0x01 0x44 0xA8 This Command is for user easy to aim the target, not a necessary procedure for the measurement Slave response:1-success,0-failed Laser OFF 0xAA 0x01 0x43 0x44 0xA8 0xAA 0x01 0x43 0x01 0x45 0xA8 Slave response: 1-Success, 0-failed Continuous measuring 0xAA 0x01 0x44 0x45 0xA8 Slave Initiate Address Command Data1 Data2 Data3 Data4 Data5 Data6 Check Sum End Cond.1 0xAA 0x01 0x44 0x30 0x32 0x33 0x34 0x35 0x36 0x79 0xA Cond.2 0xAA 0x01 0x44 0x45 E 0x52 R 0x52 R 0x32 2 0x35 5 0x35 5 0x74 0xA8 1. Slave response: Data Byte coding with ASCII. For example: If measuring distance is mm, Data will be shown as above Cond.1; but if system fail, the error code is 255, the response data will show as Cond. 2, other error code can be as ERRxxx.

7 Continuous Measuring 0xAA 0x01 0x45 0x46 0xA8 Slave Initiate Address Command Data 1 Data Data Data4 Data5 Data6 Check End 2 3 Sum Cond.1 0xAA 0x01 0x45 0x30 0x32 0x33 0x34 0x35 0x36 0x7A 0xA Cond.2 0xAA 0x01 0x45 0x45 E 0x52 R 0x52 R 0x32 2 0x35 5 0x35 5 0x75 0xA8 Continuous measuring command will allow the EV-kit to send back measuring data continuously; there are 2 ways to stop the continuous mode, 1. STOP Continuous measuring command, and 2. Level Low the supply power as system OFF. Slave response is shown above. STOP Continuous Measuring 0xAA 0x01 0x46 0x47 0xA8 0xAA 0x01 0x46 0x01 0x48 0xA8 Slave response: 1-Success, 0-failed ON/OFF Buzzer Master Initiate Address Command Data 1 CheckSum End 0xAA 0x01 0x47 0x01 0x49 0xA8 0xAA 0x01 0x47 0x01 0x49 0xA8 User can use this command to ON/OFF the Buzzer on the EV-kit by sending 0-OFF, 1-ON The case above is to turn ON the Buzzer, and Slave response: 1-Success, 0-failed Notice- User should always remember to turn OFF the power of the EV-kit when the measurement is complete, as keeping the power on might reduce the life-time of the Laser and the light receiving element inside the EV-kit.

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