SIngle ToF

SIngle ToF

Information Categories: 光传感器 传感器 Brand: 丢石头

Description Features 单点TOF激光测距传感器 Interfaces UART接口

Related products Laser Sensor 红外测距传感器 激光测距传感器模块

测距原理

TOF是Time of Flight的缩写，即飞行时间。具体是指通过周期性的向外发出红外光调制波，当调制波遇到被测目标后反射，然后用传感器接收从被测目标反射回来的调制波。通过测量调制波往返的相位差，可得到飞行时间，从而计算出传感器与物体目标之间的相对距离。示意图如下所示。

引脚说明

• 
• 
• 短接TX与RX引脚后上电可实现硬件恢复出厂设置

产品参数

• 

User Instructions

Demonstration Example

Modbus Protocol

• The single-point TOF laser ranging sensor adopts the industrial standard Modbus protocol. Modbus communication commands are divided into two types: read commands and write commands.
  • Read Command (0x03): Read data from the corresponding register.
  • Write Command (0x06): Write data to the corresponding register.
• The specific read and write formats are shown in the following tables:
  • Data Frame Sent by the Host Computer
  • 
  • Module Response Frame
  • 
  • Example: Reading Measurement Distance
    • Send Command: 50 03 00 34 00 01 c8 45
    • Received Data: 50 03 02 07 0B 06 7F
    • Data Parsing:
      • Send: 0x50 is the Modbus ID (default), 0x03 is the command number (read command), 0x34 is the register address (measurement data), 0x01 is the read length (one digit), 0xc8 0x45 are the CRC check digits.
      • Receive: 0x50 is the Modbus ID (default), 0x03 is the command number (read command), 0x02 is the data length (two digits), 0x07 0x0B is the measurement data (0x070B corresponds to 1803 in decimal, and the measurement distance is 18036mm), 0x06 0x7F are the CRC check digits.

Modbus Registers

• System Restore
  • Register Address: 0x00
  • Send Format:
  • 
  • Description (0xXX):
    • Write 0x01 to reset the sensor to factory settings.
    • Write 0x02 to restart the sensor.

• Baud Rate Setting
  • Register Address: 0x04
  • Send Format:
  • 
  • Description (0xXX):
    • Write 0x00 to set the baud rate to 2400.
    • Write 0x01 to set the baud rate to 4800.
    • Write 0x02 to set the baud rate to 9600.
    • Write 0x03 to set the baud rate to 19200.
    • Write 0x04 to set the baud rate to 38400.
    • Write 0x05 to set the baud rate to 57600.
    • Write 0x06 to set the baud rate to 115200 (default).
    • Write 0x07 to set the baud rate to 230400.
    • Write 0x08 to set the baud rate to 460800.
    • Write 0x09 to set the baud rate to 921600.

• Modbus ID Setting
  • Register Address: 0x1A
  • Send Format:
  • 
  • Description (0xXX):
    • Write a value in the range of 0x00~0xFE. The factory default setting is 0x50.

• Measurement Data
  • Register Address: 0x34
  • Send Format:
  • 
  • Description:
    • Read the high 8 bits and low 8 bits of the distance data.

Product Information

• Host Computer
• Arduino Example Code
• Raspberry Pi Example Code

FAQ

Contact Diustou Our working hours are: 09:00-18:00 (UTC+8 Monday to Saturday)