Barcode Scanner Introduction:
According to the different names, barcode scanners are also called barcode readers, barcode scanners, barcode scanners, barcode scanners and barcode scanners. The barcode scanner uses the photoelectric principle to convert the barcode information into an input device that can be accepted by the computer. It is often used in libraries, hospitals, bookstores and supermarkets as an input method for quick registration or settlement. The barcode information on the device is directly read and entered into the online system.
Barcode Scanner Structure:
The barcode scanner is a device used to read the information contained in the barcode. The structure of the barcode scanner is usually the following parts: light source, receiving device, photoelectric conversion component, decoding circuit, and computer interface.
The principle of barcode scanner:
The basic working principle of the barcode scanner is as follows: The light emitted by the light source is irradiated on the barcode symbol through the optical system, and the reflected light is imaged on the photoelectric converter through the optical system, so that an electrical signal is generated, and the signal is amplified by the circuit to generate a The analog voltage, which is proportional to the light reflected on the barcode symbol, is filtered and shaped to form a square wave signal corresponding to the analog signal, which is interpreted by the decoder as a digital signal that can be directly accepted by the computer.
Glue requirements for barcode scanners:
- High bonding strength to the chassis frame
- Excellent heat dissipation for heating components
- Environmental protection, non-toxic, with routine testing certification and qualifications
- Moisture-proof, anti-static, dust-proof, mildew-proof, salt spray resistance, etc.
Glue scheme for barcode scanner:
|Glue position for barcode scanner||Glue function category||Features of glue application|
|heat sink||Thermal Grease||It has excellent thermal conductivity, heat dissipation, electrical, insulation, moisture-proof, shock-proof and anti-aging properties, and can work for a long time in the temperature range of -40℃-200℃|
|Plastic Structural Parts||Structural sealant||High strength, can withstand large loads, and is resistant to aging, fatigue, and corrosion, and has stable performance within the expected life, suitable for bonding strong structural parts|
|Chassis border||adhesive sealant||Strong bonding ability, fast curing speed, resistance to alternating heat and cold, good electrical insulation, excellent acid and alkali resistance, aging resistance, UV resistance, no solvent, no pollution, no corrosion, easy to use|
|electronic circuit board||Three anti-paint||It has excellent insulation, moisture-proof, anti-leakage, shock-proof, dust-proof, anti-corrosion, anti-aging, corona resistance and other properties.|
Due to the different operating environment, structure and process of barcode scanners, the glue application plan is different. For more details, please contact Cohetion.