Logistics Personnel and Forklift Collision Avoidance UWB Solution

PublishTime： 2022-07-14 Article Source：天工测控

In recent years, with the rapid development of the warehousing and logistics industry, the demand for forklift trucks is also increasing in factories, ports, docks, logistics enterprises, etc. The number of forklift accidents that followed also continued to increase.

Forklifts are heavy-tonnage transportation equipment in warehouses. There are many blind spots because the goods ahead block the sight of operators. In the event of a vehicle collision, it is easy to injure people or hit the shelves, causing the goods to collapse and injure people. It can be seen that it is very important to do a good job of forklift collision avoidance. Doing a good job of forklift collision avoidance is the primary work of plant safety protection.

In order to avoid the frequent occurrence of forklift safety accidents, SKYLAB provides a UWB solution for personnel forklift collision avoidance warning. By installing monitoring equipment on the forklift, it can detect the people and vehicles in front and behind, so as to achieve the collision avoidance effect between the forklift and the person, and the forklift and the forklift.

The UWB solution for collision avoidance between personnel and forklifts launched by SKYLAB can effectively prevent and eliminate the occurrence of high-risk accidents such as collisions between forklifts and forklifts, and forklifts rolling over workers.

Introduction of Anti-collision Warning Solution for Personnel and Forklifts

The UWB solution for personnel and forklift anti-collision warning provided by SKYLAB includes two situations, namely, the anti-collision warning between the forklift and the forklift, and the anti-collision warning between the forklift and the worker.

The personnel forklift collision avoidance warning solution is based on UWB high-precision ranging, with advanced UWB positioning and ranging technology as the core. The TOF multi-group two-way ranking algorithm is used to achieve accuracy between forklifts and forklifts, forklifts and personnel wearing UWB Worker Cards Ranging, the average ranging accuracy can reach 10cm.

It is combined with sound and light alarm to form an anti-collision warning device to realize the function of anti-collision warning. When a collision is about to occur, an alarm is generated to remind the forklift operator. At the same time, the anti-collision UWB worker card also emits warning lights, vibrations, and warning buzzers to remind relevant staff.

(1).UWB Solution for Forklift and Personnel Anti-collision Warning

The driver failed to detect the presence of pedestrians in time due to the occlusion of the line of sight. The UWB Anchor can be used to sense pedestrians wearing work cards and the presence of forklifts installed on the UWB Anchor, so as to realize early warning.

(2). Forklift and Forklift Anti-collision Warning UWB Solution

The UWB base station on the forklift measures the distance with the UWB base stations on other nearby forklifts and outputs a control signal to the relay. Control the alarm and the power supply of the forklift itself, so as to realize the sound and light alarm and emergency braking.

3.The Principle of UWB Solution for Personnel Forklift Anti-collision Warning

Install the UWB base station VDU2506 on the forklift, and combine it with the sound and light alarm device to form an anti-collision warning device. Through the UWB base station installed on the forklift, the high-precision distance measurement between the UWB work cards carried by the personnel can simultaneously complete the accurate distance measurement between multiple forklifts and between multiple personnel and forklifts. This enables collision avoidance warning between forklifts and forklifts, and between forklifts and people.

In addition, the ranging accuracy between UWB base station and UWB base station, UWB base station and UWB worker card is as high as 10CM, accurate ranging and small error.

At the same time, the Uwb base station can set the ranging range and early warning threshold according to the scene. When the distance between the two forklifts is lower than the set safety warning threshold, the UWB base station outputs a control signal to the relay after measuring the distance with another UWB base station. Then control the alarm and the power supply of the forklift itself, so as to realize the sound and light alarm and emergency braking.

4. Application Scenarios of Personnel Forklift Collision Avoidance UWB Solution

The personnel forklift collision avoidance UWB solution is suitable for the safety management of forklift operation in factories, logistics warehouses, ports and other areas. Forklift and forklift, mutual distance measurement between forklift and workers, avoid mutual collision between them and reduce human accidents. The UWB base station is simple to install, which can effectively reduce the occurrence of various vehicle collision accidents and vehicle rolling over personnel accidents.

5.Advantages of UWB Solution for Personnel Forklift Anti-collision Warning

(1) The ranging accuracy is as high as 10 cm, the early warning distance is accurate, and the error is small;

(2) The uwb base station can realize 360-degree real-time ranging without dead angle, and is not affected by various bad weather and dust.

6. Personnel Forklift Collision Warning UWB Product Recommendation

(1) UWB Anchor

VDU2506 is a long-distance UWB Anchor developed by SKYLAB. The two-way distance measurement between the base station and the base station can reach 500 meters.

Feature:

◆ IP67 dust-proof and water-repellent design;

◆ Support disconnected network storage location data;

◆ The coverage radius of UWB base station can reach 400 meters;

◆ Support 100M Ethernet, UART, RS485 and 2.4G WiFi to upload data and communication;

◆ Power supply: standard POE or DC 5V power supply.

(2) UWB Worker Card

UWB work card VDU1501R features

◆ The main control chip of VDU1501R is nRF52832, which can realize low-power standby, sending and receiving control of positioning packets.

◆ The radio frequency chip is DW1000, which sends or receives TDOA/TWR data packets of UWB, and realizes high-precision ranging under the analysis of UWB base station.

◆ The work card label has a built-in acceleration sensor, which can intelligently switch the positioning frequency when the personnel is in the motion state and the stationary state, which can achieve lower power consumption control.

◆ The shell of the badge label adopts ultrasonic lamination technology, which can achieve IP66 waterproof.

◆ The work card label is equipped with a white lanyard, which is convenient for personnel to wear. The badge tag has a built-in motor, which can realize the following three applications:

(1) Cooperate with the UWB base station to realize the electronic fence, approach or enter the set area to realize the security alarm function;

(2) Realize the function of personnel social distance detection and alarm;

(3) It can also be used to send emergency evacuation information, so as to realize the safety monitoring of worker positions in smart factories and construction sites.

(3) Helmet UWB ranging tag

The characteristics of the UWB tag VDU1506 are as follows:

◆ RF chip: Decawave DW1000

◆ Main control chip: Nordic nRF52832

◆ Sports refresh rate: 1Hz

◆ Static refresh rate: 0.3Hz

◆ Positioning/Ranging Accuracy: CEP90, 30cm

◆ Positioning algorithm: support TDOA positioning and support TWR ranging

◆ A full charge of use time: TDOA positioning can be used for 3.8 months (default 1Hz); TWR ranging can be used for 28.3 days (default 1Hz)

◆ Fully charged time: about 3.5 hours

◆ Charging method: Magnetic charging with charging head (provided with matching magnetic charging cable)

◆ Positioning distance: 1000 meters TWR ranging (maximum transmit power)

◆ Protection grade: IP66 waterproof and dustproof

◆ Alarm: integrated SOS button, emergency use

◆ Function: personnel positioning, distance detection

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