Laser speed measurement is a technology that uses the laser Doppler effect or laser time-of-flight principle to accurately measure the speed of an object. It has core advantages such as high measurement accuracy, fast response speed, and non-contact (avoiding interference with the object being measured). It is widely used in traffic law enforcement, industrial production, scientific research experiments, military equipment and other fields. 

Onick LSP350 handheld camera laser speedometer

Onick Outdoor Optics integrates advanced laser speedometer technology and video image technology to launch the ultra-portable laser speedometer recording system - Onick LSP350 handheld camera laser speedometer, which is also an integrated handheld laser speedometer that can accurately measure the real-time speed of the car and measure the corresponding distance at the same time. The static picture capture and video recording function of the speeding vehicle can record the dynamic image of the speeding vehicle completely, and it is light and easy to carry.

Product Features:
1. 3.5-inch color touchscreen display for clear and convenient readings
2. Measurement range up to 350 km/h with 1 km/h accuracy
3. Equipped with GPS functionality, voice prompts, and user-friendly design
4. Maximum measurement distance of 1500 meters, suitable for complex road conditions
5. 80x ultra-high magnification for precise and clear target measurement
6. Built-in electronic compass displays azimuth and roll angle
7. Photos display time, coordinates, location, and officer name

The following is a detailed introduction focusing on its core principles, main types, typical applications, and technical features:

Main Application Areas: Covering a wide range of scenarios from civilian to military applications

Laser speed measurement, due to its non-contact and high-precision characteristics, has become a core technical tool in multiple fields. Typical scenarios include:

1. Traffic Enforcement: The most common civilian scenario

Device Types: Handheld laser speedometers (for on-site traffic police enforcement), fixed laser speed measurement systems (for road checkpoints);

Operating Principle: Utilizing the Time of Flight (TOF) principle, a laser beam is focused on a vehicle (usually the license plate or vehicle body), completing two distance measurements within 1-2 seconds to calculate the vehicle's real-time speed. If the speed limit is exceeded, a camera is automatically triggered to capture the vehicle (recording the license plate, time, location, and speed).

Technical Parameters: Effective measurement distance is typically 50-500 meters, speed range is 5-250 km/h, accuracy is ±1 km/h, and anti-interference capabilities are strong (it can filter out reflected signals from vehicles in adjacent lanes).

2. Industrial Production: Ensuring Process Accuracy and Safety

Typical Scenarios:

Assembly Line Speed Measurement: For example, in automotive manufacturing, measuring the speed of conveyor belts and robotic arms to ensure synchronized assembly;

Rotating Component Speed Measurement: For example, measuring the speed of motors, gears, and turbines (in revolutions per minute, RPM) by illuminating a reflective spot on a rotating surface with a laser and calculating the frequency offset to derive the speed;

Fluid Velocimetry: For example, the flow rate of crude oil in oil pipelines and the mixing velocity of fluids in chemical reactors (using the LDV principle to avoid contact with corrosive or high-temperature fluids).

3. Scientific Research and Sports: Precision Measurement in Extreme Scenarios

Scientific Research: Measuring the speed of high-speed particles (such as plasma), simulated flight speeds of spacecraft in wind tunnels, and the propagation speed of seismic waves;

Sports: Measuring the instantaneous speed of sprinters in track and field competitions (using laser velocimeters located next to the track to record acceleration at different stages after the start) and the speed of tennis/baseball serves (the "ball speed data" displayed in real-time during game broadcasts often comes from laser velocimetry).

4. Military Equipment: Improving Weapon and Reconnaissance Accuracy

Application Scenarios:

Artillery/Missile Velocity Measurement: At weapons testing sites, laser velocities are used to measure projectile muzzle velocity and missile flight speed to verify weapon performance.

Airborne/Shipborne Reconnaissance: Laser velocity measurement systems aboard military reconnaissance aircraft or ships can measure the speed of enemy vehicles and aircraft at long distances, providing data for combat decision-making.

LiDAR Fusion: Some military radar systems incorporate laser velocity measurement to improve tracking accuracy of high-speed targets (such as drones and cruise missiles).

Technical Features: Advantages and Limitations

1. Core Advantages

Non-contact measurement: Requires no physical contact with the object being measured, preventing interference or damage to high-speed, high-temperature, flexible, or delicate targets (such as glass, thin films, and hot parts).

High Precision and Response: Accuracy generally reaches 0.1%-1% (some scientific research equipment can reach 0.01%), with response times as short as microseconds (suitable for capturing instantaneous speed changes).

Strong Anti-interference Capability: Lasers are highly directional (the beam is focused and less susceptible to ambient light and electromagnetic interference), effectively filtering out background noise, particularly in industrial or transportation scenarios.

Wide Application Range: Capable of measuring speeds from 0.01 m/s (for tiny parts) to several kilometres per second (for high-speed particles), covering low-speed, high-speed, and ultra-high-speed scenarios.

2. Limitations

Affected by obstruction and weather: Lasers travel in a straight line. If the object being measured is obscured (e.g., by fog, rain, snow, or dust), the reflected light will be weakened or lost, reducing the measurement distance and accuracy. (Some devices are equipped with anti-fog lenses or adaptive power regulation to alleviate this issue.)

Target surface requirements: The target surface must be reflective (e.g., metal or painted surfaces). If the target is a fully absorptive material (e.g., matte black), reflective tape must be applied to aid measurement.

High cost: High-precision LDV equipment (e.g., scientific research-grade) can cost hundreds of thousands of yuan. While civilian traffic enforcement equipment is now widely available, it still costs more than traditional radar speed guns.

In summary, laser speed measurement, with its core advantages of high precision and non-contact, holds an irreplaceable position in scenarios requiring precise speed measurement. Furthermore, with advances in laser chips and signal processing algorithms, its cost continues to decrease, and its application is expanding into consumer electronics (e.g., drone speed measurement) and smart homes (e.g., human motion trajectory speed analysis).