In our market,Car 4 wheel alignmentThere are many brands and varieties of equipment. Due to its high technological content, many users do not know much about its technical specifications and testing principles. They are usually at a loss when buying equipment due to the various manufacturers and exaggerated product introductions. Here are some helpful suggestions on these important aspects:

Performance-price ratio

The price difference of 4-wheel alignment of different brands is very large. Because there is no corresponding law in China for the production of 4-wheel alignment products, the products in my country are mixed. For example, although some brand equipment is equipped with a computer, the computer is only used to manage the vehicle model data. The sensor is not connected to the computer, and the sensor data cannot be displayed on the computer. Users cry out that they have been cheated after purchasing. Some equipment deceives users by claiming to be imported, and some equipment cuts corners; some manufacturers use imported low-end sensors for simple assembly, and they lack the maintenance technology for the sensors, so that the user's equipment failure cannot be timely and effectively eliminated: the popular positioning equipment can be bought at a cheaper price of more than 230,000 yuan, and the expensive equipment (generally speaking, imported equipment) costs hundreds of thousands or even hundreds of thousands. Under normal circumstances, you get what you pay for. However, for imported equipment, due to factors such as tariffs and agents' price increases, the price return is also higher. Different brands of equipment have different costs because they use advanced technology, production processes, equipment, etc., so the market sales price is also different. Technically, users can identify the technical specifications of the machine from the following aspects:

1. Does the car's 4-wheel alignment use DSP technology?

DSP, or Digital Signal Processor, is a special processor for high-speed real-time processing of digital signals. Its processing speed is 10-50 times faster than that of CPU. In the early days, DSP was mainly used in military products. Now, with the continuous advancement of ultra-large-scale integrated circuits and the continuous reduction of costs, it is gradually being applied to civilian products. Because DSP has powerful computing power, the use of DSP in sensors not only improves the measurement speed and accuracy of the database, but also further improves the anti-interference ability of the measurement.

If DSP technology is used to modulate the measuring light, the modulated infrared light has different characteristics from sunlight or other light sources. When receiving, the modulated measuring light is demodulated and filtered out, so that the measurement result can be guaranteed not to be interfered by other light.

DSP technology equipment costs are high, and the price is also high due to advanced technology.

2. Is it electronic level?

In order to achieve the designed measurement accuracy, the popular 4-wheel alignment instrument must ensure that the 4 probes are always in a horizontal state at the same time during the measurement process. The non-level state of any probe may cause erroneous measurement results.

3. Is it an electronic turntable?

Among the alignment parameters, the castor angle and kingpin inclination angle of the four-wheel alignment of the car cannot be measured directly, and can only be measured indirectly based on the geometric relationship: turn the front wheel 20 degrees to the left and right.