Application of pressure sensor in sweeping robot

With the development of science and technology and corresponding technological breakthroughs, sweeping robots still have a lot of room for improvement

my country's sweeping robot market began to rise in 2009, and has gradually entered a rapid development channel with the increase of domestic and foreign brands. According to relevant data, in 2014, the retail volume and retail sales of sweeping robots in my country were 1.41 million units and 2.2 billion yuan respectively, and in 2019, the retail volume and retail sales of sweeping robots reached 5.44 million units and 8 billion yuan respectively. Due to problems in technical level, market cultivation, living habits, etc., household sweeping robots are not just-needed products, and the current market penetration rate is only 5%. However, according to the "China Smart Home Equipment Industry Market Outlook and Investment Strategy Planning Report" released by the Forward-looking Industry Research Institute, the penetration rate of sweeping robots in China is expected to increase to 12% in 2024. The market is still in the early stages of growth. With the development of science and technology and breakthroughs in corresponding technologies, sweeping robots still have a lot of room for improvement.

Compared with the first generation of products, today's sweeping robots are more comprehensive and intelligent, and have many functions of smart home appliances. The sweeping robot equipped with + visual navigation technology has improved its hardware and better realized autonomous obstacle avoidance by combining AI vision technology. It can identify common obstacles such as avoidance and shoes. After continuous updates and upgrades of algorithms, the sweeping and mopping robot that is more suitable for user scenarios meets the practical needs of families.

For complex application scenarios, Akashi Micro-Nano provides applications in sweeping robots

In terms of the application scenarios of sweeping robots, the structure of large flat houses is usually more in line with the working requirements of sweeping robots. However, in fact, whether at home or abroad, there are endless house structures. In addition to duplex buildings, there are also staggered floors and villas. The simple flat cleaning of sweeping robots is difficult to adapt to actual life scenarios. A solution proposed by Mingshi Micronano: install a pressure sensor on the charging station of the sweeping robot and another sensor on the sweeping robot. The difference between the pressure data of the two devices can be calculated to determine which floor the sweeping robot is on. In addition, when the sweeping robot has floor recognition, it can retrieve the correct room map for efficient cleaning.

In addition, there are several other important reasons why users complain about sweeping robots and leave them idle: filter blockage, troublesome dust box cleaning, etc. Filter blockage will reduce dust collection efficiency, and frequent filter replacement will increase costs and labor; overfilling the dust box will also affect the suction and reduce cleaning efficiency, so it is particularly necessary to accurately judge the degree of filter blockage and dust box fullness. At present, most sweeping robots can only roughly judge the degree of dust box fullness through photoelectric detection and other methods, and often cannot reflect the blockage of the filter. Akashi Micronano uses pressure sensors to detect negative pressure vacuum and pressure difference, so that the degree of filter blockage and dust box status can be monitored more accurately and efficiently, so as to replace the filter or clean the dust box and adjust the suction in time, which helps to maintain good dust collection efficiency and improve cleaning efficiency.

Akashi Micro-Nano's new generation of air pressure MSPLA101 series products have a relative accuracy of about ±4Pa, which ensures accurate results for sweeping robots and vacuum cleaners. Low-noise, low-drift air pressure sensors are used to accurately measure vertical height and blockage, with an air pressure accuracy of ±0.6Pa, a temperature compensation range of -40°C~125°C, and a temperature accuracy of ±0.5°C. It can support analog or digital output, and its package size is 8-n LGA. Its typical application scenarios include: indoor navigation (floor detection), sports (lifting height and speed), altitude measurement, weather stations, and air pressure fluctuation measurement. In addition, enterprise users can also choose other absolute pressure sensors as a backup solution.

Mingshi Micro-Nano has the leading packaging production line in China and independently developed fully automatic calibration production line, with the ability to calibrate 60 million high-end pressure sensors. In addition, its proprietary technology ensures that packaging does not affect sensor accuracy and supports pin-to-pin replacement.

Review editor: Tang Zihong