Cutting edge technology

Sensors solve four major problems in robot development

Guide: The sensor acts as a role in receiving information from the outside world in hardware. Today, the editor of the mining network for everyone to simply talk about the role of sensors in the future development of robots?

Various types of robots developed by modern high-end technology have been widely used in many fields, occupying a position of weightlifting. Science is constantly evolving, and the performance levels of robot manufacturing processes are constantly improving. In the future, with the acceleration of the Internet of Everything and the era of intelligent sensing, the new era of robots entering information and intelligence will be the trend of the times. In order to realize this upgrade and development, among the several technologies that have the greatest impact on the development of robots, In addition to intelligence, big data, positioning and navigation, sensor technology also plays a vital role.

Sensor is a detecting device that can sense the measured information and can convert the received information into electrical signals or other required forms of information according to certain rules. Meet the requirements of information transmission, storage, display, recording and control. For the robot, the sensor is like the medium that the robot knows the world. It gives the robot all the perceptual ability to perceive the five kinds of perceptions of the human body's vision, force, touch, smell and taste. The feeling like a human makes the object slowly live, just as the eyes, nose, and ears act on the human body. The sensor acts as a role in receiving information from the outside world. Today, the editor of the mining network for everyone to simply talk about the role of sensors in the future development of robots?

The five kinds of perceptions of the robot's vision, force, touch, smell, and taste all require sensor transmission. Therefore, it can be said that the sensor is like a human sensory organ for the robot, and the robot is used to detect the external work of the robot. Environment and object status: Detect and understand the position, speed, temperature, load, voltage and other information of each joint, and then feedback the information to the controller to form a closed-loop control, effectively ensuring and improving the operation and sensitivity of the robot itself. The internal detection of the robot's own working conditions, through the combination of internal and external comprehensive information, the sensor truly realizes that the "machine" becomes "human."

However, due to the late start of the industry and the pressure of competition, China's sensor development still faces four major difficulties.

One: The key technologies have not yet broken through. Sensor designSurrounded by a variety of disciplines, theories, materials and process knowledge, it is very difficult to break through. At present, in the absence of talent, high research and development costs, and fierce competition in enterprises, China has not broken through some common key technologies of sensors.

Second: Insufficient industrialization capacity. Due to the backwardness of the technical strength of Chinese enterprises, the industry development norms have not yet formed, resulting in the failure of domestic sensor products and the lack of series. The phenomenon of repeated production and vicious competition has led to poor reliability and low-end offset, and industrialization. The degree is not proportional to the variety and the series, and can only rely on foreign imports for a long time.

Three: Resources are not concentrated. At present, there are more than 1,600 sensor companies in China, but most of them are small and micro enterprises, and their profitability is not strong. The lack of technology-led leading enterprises has led to the diversification of capital, technology, enterprise layout, industrial structure and market. The state, the resources are not effectively concentrated, and the industrial development is slow to mature.

Four: High-end talents are scarce. As the development of the sensor industry is in its infancy, the capital, technology and industrial base are relatively weak. In addition, there are many disciplines involved, requiring a wide range of knowledge, and new technologies are emerging, which makes it difficult to attract high-end talents to participate in it. In addition, the imperfect and unreasonable talent training mechanism in China has also led to the industry's lack of talent.

Nowadays, driven by policies and markets, the industrial ecology of China's sensors is becoming more and more complete, and key enterprises are involved in design and manufacturing. Some scientific research institutions have also established relevant service platforms to promote industrial innovation. development of. The development of robots still has a large trend and a large path. In the future, as long as China solves the four problems of technology and talents, it can promote the maturity of robot sensors. As a sensor service provider, the company has provided two sensors for robot obstacle avoidance and ranging. For specific technical solutions, please refer to the article "Application of Ultrasonic Obstacle Avoidance Sensors and Ultrasonic Distance Measurement Sensors in Robots".

Sensors for obstacle avoidance

Obstacle avoidance can be said to be the most basic function of various robots, otherwise it will be difficult for the robot to touch the flowers and plants as soon as it moves. Robots don't have to visually perceive whether there are obstacles in front of them. They can also be perceived by sound waves through touch or like a bat.

MaxBotixUltrasonic obstacle avoidance sensor - MB1043 is a high resolution (1mm), high precision and low power ultrasonic sensor. It is designed to not only deal with interference noise, but also has anti-noise ability. Moreover, sensitivity compensation is performed for targets of different sizes and varying supply voltages. In addition, standard internal temperature compensation is provided to make the measured distance data more accurate. Used in indoor environments, it is a very good low cost solution!

Sensors for distance measurement

The robot light knows which direction has obstacles and is not enough. It is also necessary to know how far the obstacles are from the specifics, so as to judge the next action. At this point we need a range sensor. Ultrasonic ranging sensor is a very common ranging sensor. It relies on the time difference between the transmission of ultrasonic waves and the reception of reflection to judge the distance. This is the same as the bat in the animal world. It is an application of bionics.

MaxBotix Human Range Ranging Sensor Ultrasonic Sensor - The MB1014 is designed for pedestrian and object detection, allowing multiple sensors to operate simultaneously in the same environment with little or no exposure to other ultrasonic sensors. Mutual interference effects. The sensor has a detection range of 15.2cm~6.45m, 2.5V~5.5V power supply, 2mA typical current consumption, 42KHz operating frequency, polar power consumption, short measurement period, etc. It is very suitable for multi-sensor operation or battery-powered system. Once you receive the command to start ranging, you will be informed of the surrounding environment. The main features of the MB1014 are easy-to-use logic (high/low) output and RS232 format serial output. Therefore, the advantage of ultrasonic ranging is that the measuring range is large and the optical signal is not used, so the color of the measured object has no influence on the measurement result, but the cost is high. Because it relies on sound velocity ranging, it is sensitive to some factors affecting the speed of sound, such as temperature, wind speed, etc., and the maximum allowable angle is small.

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