Laser-Screen Projectile Velocimeter (LSPV), is a non-contact, stand-alone velocity measuring instrument based on time of flight principle.

In LSPV, two parallel optical sheets are generated using diode lasers, which are separated, by fixed known distance and kept perpendicular to the direction of projectile motion. When a horizontal moving projectile crosses the light sheet, generates shadow on detector, corresponding electrical pulses are used to derive velocity of the projectile. It can be used as a tabletop standalone single instrument or with two parts having sensor unit near the projectile path and display unit at control room connected through fiber optic link.

Measuring Range	0.1-5000 m/sec.
Accuracy	Better than ±2 % of measured value.
Measurement Time (max.)	10 msec.
Projectile Size	1 mm and above.
Stand-alone instrument	Microcontroller based circuit.
EMI immunity	Optical connectivity between units.

1. In Defense labs
2. For study of material properties like deformation with known impact.
3. To find Coefficient of restitution of a material.
4. For college experiments on gravity.

Laser-Screen Projectile Velocimeter (LSPV), is a non-contact, stand-alone velocity measuring instrument based on time of flight principle.

In LSPV, two parallel optical sheets are generated using diode lasers, which are separated, by fixed known distance and kept perpendicular to the direction of projectile motion. When a horizontal moving projectile crosses the light sheet, generates shadow on detector, corresponding electrical pulses are used to derive velocity of the projectile. It can be used as a tabletop standalone single instrument or with two parts having sensor unit near the projectile path and display unit at control room connected through fiber optic link.

1. In Defense labs
2. For study of material properties like deformation with known impact
3. To find Coefficient of restitution of a material
4. For college experiments on gravity

SPECIFICATIONS

Measuring Range	0.1-5000 m/sec
Accuracy	Better than ±2 % of measured value
Measurement Time (max.)	10 msec
Projectile Size	1 mm and above
Laser Source	Diode Laser (670nm, 5mWatt)
Width of Optical screen	40 mm
Thickness of Optical screen	1 mm
Distance between Tx & Rx units	Adjustable
Detector used	PIN Photodiode
EMI immunity	Optical connectivity between units
Stand-alone instrument	Microcontroller based circuit
PC-Connectivity	Serial Port, RS-232 interface

Laser-Screen Projectile Velocimeter is remotely operated

INFRASTRUCTURE REQUIRED

1. Mechanical workshop for fabrication of various mounts and chassis of instrument along with milling machine, drill machine and bending machine.
2. Electronic soldering, assembling and testing facility.
3. Personal computer with universal EPROM programmer and associated software to program the microcontroller.
4. Optical bench, height correction rods and its mount for optical alignment

SPACE

1. Space of 40 m² required for start the manufacturing of the unit.

RAW MATERIAL

1. Laser diodes and photodiodes are imported items and are available through local vendors. All other components are available locally.

MANPOWER

1. An experienced Electronic Engineer/Diploma holder for PCB testing and trouble shooting.
2. An Electronic technician for assembly of electronic cards.
3. A mechanical diploma Engineer for fabrication, assembly and alignment of opto-mechanical assembly.