Light curtain target

Accurate and efficient testing equipment is the key to ensuring the reliability of experimental data in the field of projectile and flying object velocity measurement.Light curtain targetWith stable performance and convenient operation, it has become a practical choice in this field.

Taking the projectile velocity testing experiment at a certain weapons research institute as an example, researchers need to study the new type of projectileequipmentAccurately measure the initial speed. At the experimental site, technicians placed the emission and reception modules of the laser light curtain target parallel to the front of the trajectory, adjusted the distance between the two to 0.8 meters, and ensured that the projectile could accurately pass through the light curtain area. After connecting the speedometer to a 220V AC power supply, establish a connection with the laboratory host computer through a 100M Ethernet interface, and open the supporting software to complete parameter settings and system calibration. When the bullet is fired from the barrel and instantly passes through the laser screen, the system immediately captures the signal change, and the upper computer screen displays the collected raw waveform in real time, and quickly calculates the bullet velocity value. The entire testing process does not require manual intervention, and the data is automatically stored in the system database. Historical data can be retrieved at any time for comparative analysis in the future, as shown in Figure 2.

Figure 2 Light Curtainconnection diagram

thatproductThe core measurement unit consists of a laser light curtain target and a speedometer. The maximum distance between the laser light curtain target emitting and receiving modules can reach 1 meter, and the effective field of view (light curtain height) is 300mm. Combined with the design of a beam spacing of 15mm, it can measure the velocity of projectiles larger than 15mm in size. The speedometer supports 4 signal inputs and uses AC 220V power supply. The testing speed range covers 1m/s to 1000m/s, which can meet the testing needs of various common projectiles and flying objects.

In terms of data collection and processing, the system performs wellstableThe maximum collection time can reach 2 seconds, with an uncertainty of ≤± 100ns and a system error of approximately 0.3%, ensuring the accuracy of the measurement data. embeddedchipCommunicating with the upper computer through a 100M Ethernet interface not only has fast transmission speed, but also has the advantages of good noise interference resistance and long transmission distance. The upper computer software can parse, display, and store the received data, and calculate, analyze, and process the raw data to ultimately determine the conduction time of each on/off target relative to the trigger signal. At the same time, the system supports historical data recording and viewing functions, making it easy for users to trace and analyze test data in the future.

The system also takes into account the structural design and ease of use. The size of the laser target is 300mm × 80mm × 80mm, matched with a mounting chassis of Ø 160 × 4mm, making installation simple and stable. The overall operation process is simple and easy to understand, and can be used without complex professional training.

In terms of adaptability to the working environment, the system can work normally under conditions of ambient temperature -20 ℃~40 ℃, relative humidity ≤ 95%, and atmospheric pressure of 80~106Kpa, and can cope with various on-site testing environments. Whether it's scientific research experiments or practical engineering testing,Light curtain targetWe can provide users with reliable speed measurement solutions with stable performance, accurate data, and convenient operation.