When a car leaves the factory, the positioning angles of all four wheels are pre-set according to design requirements. These positioning angles are collectively used to ensure the comfort and safety of vehicle driving. However, after driving for a period of time, these positioning angles may change due to severe bumps caused by uneven roads (especially when suddenly encountering uneven surfaces at high speeds), wear and tear of chassis parts, replacement of chassis parts, tire replacement, and other reasons. Once the positioning angle changes for any reason, it may cause discomfort symptoms such as abnormal tire wear, vehicle deviation, decreased safety, increased fuel consumption, accelerated parts wear, steering wheel heaviness, shaking, and vehicle drifting. Therefore, after driving for a certain period of time or distance, cars need to undergo four-wheel alignment maintenance services, with the aim of diagnosing and correcting wheel alignment angle deviations through angle measurement. To achieve accurate measurement of angles, the tilt angle sensor in the four-wheel alignment device will play a crucial role in measuring angles.
Due to the crucial role of tilt sensors, the selection of tilt sensors is very important in the design and production of four-wheel alignment devices. It is the basis for determining important indicators such as accurate measurement of equipment, product quality, and product grade.
Common parameters to consider when choosing a tilt sensor
The primary parameter for selecting a tilt angle sensor is accuracy. The adjustment deviation of the tilt angle for today's vehicle models is generally around 5 '. For example, the camber angle of the front wheels of the Shanghai Volkswagen Passat B5 ranges from -0 ° 35' to ± 0 ° 25 '. Therefore, the measurement accuracy of the tilt angle sensor is required to be within 0.1 degrees, and this accuracy must be met over a wide temperature range. Because in China, repair shops that perform four-wheel alignment are usually located outdoors or in open environments, and they need to work normally even at minus 20 degrees Celsius in the north, which requires good temperature stability of the tilt sensor.
The second parameter to consider when choosing a tilt sensor is the measurement range, which is the measurement range of the sensor. In four-wheel alignment, the angle of most vehicle models is within ± 10 °, and there are also some vehicles with individual angles around ± 15 °. Therefore, the optimal measurement range for the inclination sensor used in four-wheel alignment is ± 15 °.
The third parameter to consider is the frequency response of the product. During the measurement process, it is often necessary to move or adjust the equipment. If the response frequency of the sensor is wide, it is difficult to stabilize the reading during measurement, so it is required that the sensor has a good low-frequency response.
The fourth parameter to consider is the anti vibration capability of the product. The tilt angle sensor is fixed on the mounting base plate of the four-wheel alignment instrument, and then installed on the wheels of the car through fixtures. When installing, applying or adjusting the wheel angle, it is often subjected to certain impacts, so it is required that the tilt angle sensor has good anti vibration performance.
The fifth parameter to consider is long-term stability. A sensor with good long-term stability is the guarantee for the entire device to work stably for a long time. The above five points are the main parameters to consider when selecting a tilt sensor for a four-wheel alignment device, as they directly determine the quality of the four-wheel alignment device.
Wuxi Huilian Information Technology Co., Ltd. specializes in the production and sales of various types of tilt sensors, angle sensors, tilt switches. The accuracy, input/output interfaces, appearance, performance, etc. of the products can be customized. It is a leading professional sensor equipment supplier in the industry, with reliable product quality, high cost-effectiveness, accurate testing, and complete pre-sales and after-sales technical support services. We welcome new and old customers to negotiate cooperation!
