Safety Laser Scanner Used in Dangerous Areas of Ports

50 series two-dimensional TOF navigation type laser radar. 50 meters monitoring, 300° scanning angle.

For anti-glare interference, EMC, high and low temperature, anti-vibration, anti-shock. A variety of accessories, easy to use, for users to secondary development. A strict testing system and quality system have been established. XD-TOF-50H series two-dimensional radar adopts the principle of TOF ranging, combined with mechanical rotating structure, can scan the surrounding environment and output polar coordinate point cloud data of object contours. High precision, fast response speed, good stability, with high-performance power protection module and automatic heating module, can be widely used in various industrial scenarios.

Product parameter

Working principle

XD-TOF-50 is a scanning photoelectric laser measurement sensor. The emitted laser beam is reflected and deflected by a mirror fixed on a rotating motor and scans the surrounding environment at a fixed frequency. As shown in Figure 2-1, XD-TOF-50H has a two-dimensional sector area with a scanning range of 270°. The maximum scanning distance is determined by the specific model of the product. In each specific direction, XD-TOF-50 calculates the distance between the obstacle and the radar at this angle by emitting a laser pulse with a short pulse width outward and calculating the time between the pulse and the radar to the obstacle. The principle is shown in Figure 2-2.

Figure 2-1 Scanning area of laser measurement sensor

Figure 2-2 Schematic diagram of laser measuring sensor ranging principle

The XD-TOF-50 laser measurement sensor emits laser pulses through a laser diode, and after related processing, it becomes a Gaussian distributed circular spot and diverges at a certain emission angle. The beam exit diameter is 8mm. As the detection distance increases, Figure 2-3 visually shows the beam divergence process, and Figure 2-4 shows the curve of the spot size at different distances.

Figure 2-3 The laser pulse gradually diverges

The relationship between the spot diameter D and the detection distance U is:

Figure 2-4 Beam diameter of laser pulses at different detection distances

As shown in Figure 2-6, when the object to be measured at a specific distance is larger than the spot size of the laser, the object to be tested can be stably detected. When the object under test is smaller than the laser spot size at this distance, the smaller the area of the object under test that occupies the area of the laser spot, the easier the object will be missed. Whether it is missed or not depends on the ratio of the measured object to the spot size, the tilt angle of the object itself, the reflectivity of the object itself, etc. We give the reflectance requirements for stable detection of objects in Figure 2-8. You can calculate the equivalent reflectance according to Figure 2-5 and formula 2-1 according to the inclination of the object, the area of the object and the actual reflectance of the object And compare with the curve shown in Figure 2-8.

Figure 2-5 Calculating the equivalent reflectance

Equivalent reflectance calculation: where is the equivalent reflectivity of the object, is the projection of the object in the radar exit direction, is the spot size,is the angle between the surface normal of the object and the radar exit direction, and is the reflection of the object itself Rate, determined by the optical properties of the material.

Figure 2-6 Objects that are easily detected and objects that are not easily detected

With the increase of the laser transmission distance, the farther the distance between adjacent scanning measurement points, in order to ensure that the scanning area does not occur, a sufficient number of laser pulses are needed to ensure angular resolution. The XD-TOF-50 series provides two configurable solutions for customers to choose the spatial angular resolution: the laser repetition frequency is 36KHz, if the customer chooses a motor speed of 50Hz, then there are 720 two-dimensional plane scans for each pair The laser pulse is resolved with a spatial angle of 0.5°. If the customer chooses a rotation speed of 25 Hz, then there will be 1440 laser pulses for each pair of two-dimensional plane scans around, resulting in a spatial angle resolution of 0.25°. As shown in Figure 2-7.

A) 50Hz working mode

B)25Hz working mode

Figure 2-7 Comparison of 0.5° and 0.25° angle-resolved pulse overlap

Application scenario

Cyndar was founded by senior entrepreneurs and domestic first-class lidar and laser experts. The company's R&D team is led by a doctoral team composed of more than 20 people including the Chinese Academy of Sciences, Tsinghua University, and Tianjin University. It has gathered a large number of top talents in the domestic optoelectronics industry, radar industry, and algorithm fields. Industry, electronics industry and machinery automation industry. The team has profound insights into market development trends and customer demand dynamics, has developed new types of lidar and its application technology, and has accumulated energy for the lidar industry. The main products include single-line lidar and laser. Industrial grade 2D lidar sensors, industrial grade 3D lidar sensors and other products are being developed in an orderly manner, with a planned annual production capacity of 150,000 sets.

FQA:

1. Q: What is our best price for this product?

Answer: It can be changed according to your quantity or detailed requirements.

2. Q: After-sales service?

A: We will answer any questions you have within 24 hours.

3. Q: When will the delivery take place?

Answer: Usually, existing samples need 4-6 working days, mass production takes 7-15 days

4. Q: Can I arrange an inspection before shipping?

Answer: Yes. of course.

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