LASCAN DIA-GAUGE is a laser-based instrument for dimension measurement, based on the optical technique of beam scanning. Here, a fine beam of visible light from diode Laser scans a measuring plane using a rotating mirror and collimating optics. An object, kept in the measuring plane obstructs the scanning beam for the time proportional to its dimension. The parallel beams are then focused by a receiving optics on a photodiode to generate a shadow pulse of object, which is electronically processed to give the dimension of the object. It can measure diameters in the range of 1 to 25 mm with an accuracy of ±5 µm and repeatability of ±1 µm.

1. Laser based standalone instrument for non-contact diameter measurement
2. Arduino Microcontroller based circuit
3. TFT touch screen display
4. Keyboard through touchscreen on display
5. USB interface for data logging on PC

1. On-line outside diameter measurement of metal pins, rods, wires, cables, ceramic parts
2. Concentricity, circularity and straightness of rubber roller can be measured as product is rotated
3. Cable coating can be monitored. One LASCAN DIA-GAUGE monitor the bare conductor while a second LSDG measures the finished product
4. On-line width measurement of film, tape, strip steel and flat wire is possible

INTRODUCTION

Measurement of dimension through optical technique has gained importance due to its non-contact, on-destructive nature and high speed. Optical methods are more useful generally for remote measurement in hazardous and toxic environment where human intervention is very difficult. This method can also be used when continuous monitoring and control of product dimension is required. Being a non-contact technique, it has an advantage over the contact techniques for measurement of soft and flexible objects like rubber sheets, enameled wire etc.

DESCRIPTION

LASCAN DIA-GAUGE is an instrument for dimension measurement based on the optical technique of beam scanning. Here a fine beam of visible light from diode Laser scans a measuring plane using a rotating mirror and collimating optics. An object kept in the measuring plane obstructs the scanning beam for the time proportional to its dimension. The parallel beams are then focused by a receiving optics on a photodiode to generate a shadow pulse of the object, which is electronically processed to give the dimension of the object.

1. Laser-based Standalone instrument
2. Non-contact measurement useful for soft and flexible objects
3. Arduino microcontroller-based circuit
4. TFT touch screen display for user interface
5. USB interface for data logging on PC
6. Compact and portable

1. For online monitoring of diameter in wire industry
2. For fast measurement of pin diameter in automobile industry
3. For remote measurement in toxic and hazardous environment

SPECIFICATIONS

Sr. No.	Specification	Value
1	Measuring Range	1 - 25 mm
2	Accuracy	±5 micron
3	Repeatability	±1 micron
4	Measuring time	<1 sec
5	Laser Source	Diode Laser at 670nm of 4 mW power
6	Dimensions	54 cm x 17 cm x 21 cm
7	Power Requirement	230 V,50 mA

SPACE

1. No requirement of large working space.
2. 250 sq. ft total area may be adequate.

MANPOWER

1. One Electronics or Instrumentation Engineer for production, assembly & testing of electronic components, development of firmware and software, etc.
2. One Technician (Electronics) for assisting in components mounting, testing, etc.
3. One Technician (Mechanical) for manufacturing of mechanical assembly.

Test Equipment

1. Standard Test & measuring facility for electronic systems, mainly oscilloscope, digital multimeter, soldering station, etc.

Other facilities

1. Microcontroller programming and testing