With the development of information age, the use of mobile phones has increased year by year. In order to meet the needs of the market, mobile phone manufacturers began to produce mobile phones on a large scale. The box in mobile phone is an important module in the mobile phone. The proportion of mobile phone screen is increasing. The elimination of the mobile phone frame brings about the reduction of the area of the box in the mobile phone, and the box in the mobile phone will also easily deform. It is easy to cause the disorder of the position of electronic parts in the assembly process of the automatic production line, and the screen will be deformed with the impact of the fit. The flat height and height of each accessory affect the quality of the mobile phone. Whether the detection of the frame accessories in the mobile phone meets the standard determines the quality of the mobile phone to a large extent.

3D laser detection technology covers the upstream and downstream business fields of consumer electronics in the main direction of Z-direction, segment difference and height dimension detection.

The basic principle of diffuse reflection laser is optical triangulation: from the semiconductor laser to the object being measured by the lens. The reflected light is collected by the lens and projected onto the CMOS array; The signal processor calculates the position of light points on the array by trigonometric function to get the distance from the object. The irregular features of the product surface are captured by using the deep learning algorithm. The defect variation can be learned independently. After batch training and recognition, the detection rate and stability will be greatly improved.

It has the common advantages of professional, time saving, labor saving and high efficiency

The equipment adopts 3D laser detection technology

It has strong universality

And ease of use features

Case study on the detection of flatness difference of mobile phone

This equipment is a high performance comprehensive equipment which integrates detection, measurement, resolution and positioning, which is used to track and identify the flatness and height difference measurement of different parts in the production process of various hardware parts. The system is composed of industrial control computer, special visual sensor and computer, which can realize the functions of real-time detection, tracking alarm, statistical quantity and information processing, and can greatly improve the qualified rate of hardware products.

Mobile phone flatness height detection effect chart

Figure 1 software interface

The accuracy of 15 times dynamic repeatability of flatness is as follows (unit: mm): Example

main features

1. the equipment can achieve high-precision measurement, and the dynamic repeatability accuracy is within 0.02mm;

2. the detection speed is fast, the scanning process is simple, the material can be scanned only once, 3 seconds / PCs. the capacity can reach 1200pcs / h;

3. the software interface displays the measurement results in real time, which is clear and intuitive, and one key measurement is convenient for the operation and real-time check of data of the production line staff, and the use of the production line personnel is more convenient;

4. compatible with flatness detection of various mobile phone products;

5. the visual algorithm is modular, and the parameters can be adjusted and visible, which is very convenient for debugging and maintenance of debugging personnel, and the algorithm development cycle is short, stable and reliable;

6. quickly implement online modification of process flow, quickly implement algorithm modification for new products, and have stronger compatibility with products;

Scope of application

Flatness range difference detection equipment is widely used in mobile phones, flat plates, glass, shell parts and other small size products and parts measurement. It has the characteristics of high precision, high speed and high stability, which can meet the existing market demand for various detection.


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