“As a subdivision of the robot industry, security robots are based on actual needs and are used to complete tasks such as security protection, patrol monitoring, disaster monitoring, and harmful gas monitoring, so as to minimize the occurrence of accidents and reduce the loss of life and property. Although the security robot is in its infancy, it has great development potential and broad application prospects under the huge market demand.
As a subdivision of the robot industry, security robots are based on actual needs and are used to complete tasks such as security protection, patrol monitoring, disaster monitoring, and harmful gas monitoring, so as to minimize the occurrence of accidents and reduce the loss of life and property. Although the security robot is in its infancy, it has great development potential and broad application prospects under the huge market demand.
As a high-tech enterprise with more than 60 core patents and more than 10 awards in innovation and entrepreneurship competitions, Wanwei Robot and the former National University of Defense Technology jointly developed the country’s first intelligent security service robot ANBOT, and independently developed security patrol robots and systems. Provide customers with mobile robots and related R&D/manufacturing application solutions. Patrol robots are used in security companies, material warehouses, key sensitive areas, prisons, airports, communities, industrial parks and other scenarios.
Security Robot System
The security robot is a complex system involving chassis control, sensing, data acquisition and transmission, and background monitoring. The hardware system shown in the figure below includes a gimbal, infrared thermal imager, visible light camera, lidar, laser vibrometer, night vision light, navigation module, four-wheel drive chassis and antenna. Security robot and system features:
Patrol duty: autonomous obstacle avoidance, autonomous positioning, autonomous charging;
360° panoramic monitoring: The robot is equipped with high-definition night vision cameras and traditional monitoring systems to form three-dimensional security, and provides video storage and historical video query;
Monitoring and early warning: The robot is equipped with various monitoring equipment such as smoke detection, and thermal imaging detects abnormality and can automatically warn;
Intelligent detection: The robot can collect and monitor data such as portraits, vehicles, pedestrians, and specific anomalies during the work process;
Remote handling, warning and deterrence;
Patrol broadcast, visit guide;
The demand for power supply of security robots
The servo steering gear of the security robot is the power center of the robot, and the power conversion module supplies power for this and ensures the stable and reliable operation of the servo steering gear. The customer used a power control chip solution before, which has many peripheral devices, and the product reliability and consistency are low. At the same time, the robot basically works outdoors, and the environmental adaptability is more complicated. How to ensure stable power supply and long-term reliable operation of the system It is the direction that engineers have been working hard, and the Vicor power module solves the difficult problems of the system:
High efficiency: ensure the battery life of the system and the optimal design of the power system;
Smaller volume: Limited by the installation space of the robot, the volume of peripheral devices is required to be as small as possible;
High reliability and long-term stability: The robot works outdoors, and the power supply system needs to have a stable and reliable output in harsh environments such as high temperature and lightning strikes;
Simple heat dissipation treatment: the power module still has a stable output under the maximum power, which requires proper heat dissipation treatment. The system engineer expects the heat dissipation design of the power module to be as simple as possible;
Security robot power supply block diagram
The biggest difference of the security robot is its flexibility, which is generally four-wheel drive or six-wheel drive and the wheels can be steered. Vicor’s PI3526 and PI3740 are used in this system: 48V batteries are used to power the system, and the 48V power is converted into the 24V Voltage required by the four steering servos through PI3740. The current of each wheel is about 4A, and the PI3740 is also used as a backup battery. Power supply; PI3526 converts 48V power supply to 12V voltage to power the system processor.
Vicor PI3526 and PI3740 Features
The PI3526 is a 48V input (30-60Vin) buck regulator, the higher current range solution in the portfolio for 48V direct-to-point-of-load (PoL) applications, maintaining all the industry-leading features of existing 48V buck regulators . At the same time, it provides 1 times higher power performance than PI354x regulators with only about 40% increase in package volume. The PI3526 regulator can be easily paralleled with combinations of up to 3 regulators to support higher load current applications and is available in a 10x14mm LGA SiP package.
The new PI3740 buck-boost regulator supports an 8 to 60VDC operating voltage range and can deliver up to 140W of power and up to 8A of output current with up to 96% efficiency. The PI3740 integrates Vicor’s proprietary high-frequency zero-voltage switching (ZVS) switching technology and is a high conversion efficiency, power density power module. The PI3526 and PI3740 are ideal for automotive, industrial, test automation, LED lighting, and battery charging applications. Ideal.
The advantages of Viocr power supply in the system
PI3526 and PI3740 are small in size, high in efficiency and high in integration, which can meet the system power supply requirements of security robots;
PI3526 and PI3740 have the characteristics of wide input voltage and high module flexibility. Even if the product specifications and terminal models are changed, there is no need to change the power supply design, which reduces the cost of BOM management and is favored by system managers;
The high integration of Vicor modules reduces the usage of peripheral devices and improves operational reliability and stability;
Vicor module power supply has qualification certification, which provides qualification guarantee for customers’ products sold overseas;
PI3526 heat dissipation is simple, and the distributed heat dissipation design ensures that the system can still operate stably and reliably in harsh outdoor working environments.
Wanwei Robot has a complete R&D system. Its core competitiveness is not only reflected in the control of servo servo chassis applied in outdoor scenes, but also has a complete background terminal management and interaction system. Wanwei Robot also has its own research on navigation and positioning and differential GPS algorithm. Outdoor robots have the characteristics of flexible obstacle avoidance, etc., and have strong adaptability to various scenarios. Wanwei attaches great importance to the product development process and has a complete control mechanism and complete testing process:
Unit test: For the power supply part, test for load stability, high and low temperature environment, output protection and surge under full load conditions;
Test of simulated operating conditions: assess the complete interaction, transmission and protection performance during simulated operating conditions;
Field test: fully assess the operational reliability and stability of the robot under different road sections. The field test roads include tests on speed bumps, warm stone roads, potholes, etc.;
In the early stage of cooperation, Vicor engineers responded in a timely manner, solved problems quickly, provided complete technical support, and gave unique insights on how to combine the power module with the system design, which is one of the main reasons for the successful introduction of the power solution. It is believed that with the increasingly close cooperation between the two parties, more products will emerge in the future to escort the production and life of all walks of life.