How to Use Ultrasonic Sensors to Detect Defects in Wood-Based Panels? [Dayu Electronics]

　　1. Requirements Overview

　　Use the company's ultrasonic wood panel defect detection sensor to inspect manufactured wood panels for defects such as blistering, hollow areas, cracks, and poor bonding. The on-site conditions are summarized as follows:

　　1. Conveyor line width is 1300mm, net roller spacing is 135mm, and roller center-to-center distance is 200mm;

　　2. Panel dimensions: length L=2440 or 1220mm; width W=1220mm; thickness H=8mm (base panel 8mm, aluminum skin 0.3, adhesive layer thickness 0.03-0.04mm, total thickness 8.33-8.34mm);

　　3. Conveyor speed is adjustable, approximately 2.5 panels/minute, about 0.1 m/s

　　On-site equipment photos

　　Solution Description

　　1. Solution Schematic

　　2. Sensor Layout Diagram

　　Notes:

　　A. Panel width W=1220mm, 10 pairs of sensors are arranged;

　　B. The distance between the faces of each sensor pair is L1=100mm;

　　C. The spacing between sensors is approximately L2=94mm, and the sensors at the head and tail are about 47mm from the panel edge.

　　3. Solution Explanation

　　A. The sensor outputs a switching signal based on the quality of the panel being inspected. This output can be connected to an alarm indicator light; when a defective panel is detected, the switching signal triggers an audible and visual alarm.

　　B. The sensors are mounted using fixed brackets, with the panel passing between them; the face-to-face distance between each pair of sensors is approximately 60-120mm.

　　4. Key Technical Specifications

　　Operating Mode: Through-beam

　　Operating Voltage: 18V-30V DC

　　Detection Range: 20-120mm; Ideal: 90-110mm

　　Transducer Frequency: 70kHz ±10%

　　Indication:

　　Blue LED: No material

　　Green LED: Normal

　　Red LED: Defect

　　No-load Current: <80mA

　　Full-load Current: 3×100mA

　　Power Consumption at 24V: 24V×100mA=2.4W

　　Response/Off Delay: approximately 15ms

　　Impedance: ≥4kΩ

　　Output Signal: 3 switching outputs, NPN normally open

　　Operating Temperature: -20 to 60°C

　　NPN Output Wiring Diagram:

　　5. Equipment List

　　Cooperation Service Process and Warranty

　　Fuzhou Shukong Technology Co., Ltd. promises: The warranty period for the ultrasonic wood panel defect detection sensor is 14 months from equipment arrival at the site or one year after commissioning, whichever occurs later.

　　Services during the warranty period: During the warranty period, Fuzhou Shukong Technology Co., Ltd. will, free of charge, replace or repair any quality defects or malfunctions in the equipment or system (not caused by the buyer's personnel), resolve related technical issues, and provide personnel training. Additionally, the following services are provided free of charge:

　　Technical consultation services: Assist the owner in resolving various technical issues encountered during installation, system configuration, and equipment operation. We will seriously respond to the buyer's technical inquiries, provide a service phone number, and solicit the buyer's feedback.

　　Fuzhou Shukong Technology Co., Ltd. also promises that after the warranty period expires, it will provide the buyer with any necessary spare parts at preferential prices for life, and will guide and assist the buyer in resolving technical issues related to this system.

　　If equipment failure occurs, Fuzhou Shukong Technology Co., Ltd. will propose a solution within 2 hours.