What are the import and export equipment in supermarkets?

Supermarket entrance doors, whether they use infrared sensing or radar sensing, serve the same purpose but operate quite differently. When it comes to infrared sensing doors, these typically have a slim guardrail post positioned in front of the main pillar where the door swings open. Inside this guardrail post lies the sensor. On one side of the door, there’s usually an infrared emitter, while on the opposite side, there's a reflector that resembles the kind you might see on a bicycle's rear light. The system works by sending out a beam of red light that hits the reflector, creating a closed loop. When a shopper walks past, interrupting the infrared beam, the sensor detects this change and sends a signal to the main pillar, triggering the door to open. Radar sensing doors, however, tend to look sleeker since they don’t need the front guardrail. The sensor is directly mounted on the main pillar itself. This setup creates an invisible感应 zone roughly a meter in front of the door. No matter if you’re walking straight toward the door or approaching from the side, as long as you're within this sensing area, the radar will detect your presence and send a signal to open the door. While both types of sensors aim to provide convenience, they cater to slightly different needs. Infrared doors are great for environments where visibility and a clear detection path are important, whereas radar doors offer more flexibility in terms of positioning and can work well even in crowded spaces where people might not always approach head-on. Either way, these automatic doors make shopping more seamless and accessible for everyone. Of course, understanding how these systems work can help shoppers navigate them better, especially during busy times when multiple people might trigger the sensors at once. It’s fascinating to think about how such small technologies can make such a big difference in our daily lives!

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