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The term leveling can be seen everywhere in the industrial field. With the rapid development of China's economic construction, various industries such as municipal construction, national defense construction, shipbuilding, aviation, automobiles, fire safety, power engineering, photography, and landscaping have an increasing demand for platform mechanisms, especially for high-altitude work platforms with larger operating heights. Among them, the boom type high-altitude work platform has become the main development direction of high-altitude work machinery in the future due to its characteristics of large working height and wide operating range. Of course, the leveling mechanism is an important component of high-altitude work platforms, which directly affects the working performance of the whole machine. The larger the working height of the platform, the greater the impact of the leveling mechanism on the performance of the whole machine.

The leveling structure of high-altitude work platforms can be roughly divided into four categories according to their leveling principles: balance weight type, mechanical type, hydraulic type, and electro-hydraulic leveling mechanism. At present, the leveling mechanisms used in domestic high-altitude work platforms mainly include: balance weight type, four-bar linkage type, wire rope type, and hydraulic type. The electro-hydraulic leveling mechanism suitable for leveling high-altitude work platforms at large operating heights is still blank in China.

With the development of the construction industry, the mechanization level of construction has been increasing year by year. Tower cranes, as a type of machinery that can transport materials vertically and horizontally, have been widely used in the construction industry, especially due to their high lifting height, large lifting weight, and large working range. However, due to the large structure of tower cranes and the accompanying high-altitude operations, tower crane overturning accidents are prone to occur.

At present, tower cranes are equipped with safety limit devices, mainly including lifting weight limit devices, lifting torque limit devices, amplitude limit devices, lifting height limit devices, and slewing limit devices. The function of the safety device is to automatically cut off the power supply of the tower crane once it exceeds the set value during use, in order to prevent tower crane accidents from occurring. The more important factor causing tower crane overturning is the inadequate inspection of hidden dangers. Although safety limit devices are installed on tower cranes, the existence of certain hidden dangers cannot be detected, which exacerbates the risk factors during lifting or specific situations, ultimately leading to excessive tower body inclination and tower crane overturning. So, how to effectively detect the size of the inclination angle of the tower body before and during use, and timely alarm when the inclination angle is greater than a certain critical state, can effectively prevent tower crane overturning accidents.

The tilt angle sensor designed and developed by Wuxi Huilian Information Technology Co., Ltd. can solve this problem. The tilt angle sensor is a specialized sensor that measures the tilt angle and can measure the bending angle of the tower crane working arm. By comparing it with the normal bending angle, real-time monitoring of the working arm can be achieved, making it more stable and reliable during operation. The data of the arm tilt can be directly transmitted to the control room and displayed, and the operator can make real-time adjustments according to the actual inclination situation to improve work efficiency.