The key difference between active radars and passive radars lies in one core feature: whether they actively emit detection signals. Tailored for automatic door scenarios, here is the streamlined comparison for marketing use.
I. Brief Introduction
Active Radar: Reliable for All Scenarios
▪ Working Mode. Emits electromagnetic waves (microwaves/infrared) and detects reflected signals to identify targets.
▪ Core Advantages. Long detection range, strong anti-interference (resists strong light, dust, fog), and works for both moving and stationary objects.
▪ Ideal Applications. High-traffic indoor & outdoor spaces (shopping malls, hotels, garage entrances) , delivers stable performance in complex environments.
2. Passive Radar: Cost-Effective for Indoor Use
▪ Working Mode. No signal emission, captures target’s inherent signals (e.g., human body infrared radiation) to trigger door opening.
▪ Core Advantages. Low power consumption, budget-friendly, and excellent stealth performance.
▪ Ideal Applications. Simple indoor settings (offices, residential entryways) , best for light-traffic areas without direct strong light.
II. Quick Comparison at a Glance
▪ Signal Source. Active radar, self-emitted. Passive radar, target/environment-generated.
▪ Anti-interference. Active radar, strong (light/dust/fog-resistant) . Passive radar, moderate (sensitive to temperature/light) .
▪ Best For. Active radar for indoor & outdoor high-traffic sites. Passive radar for indoor low-traffic spaces.
▪ Cost & Power . Active radar, slightly higher cost & power . Passive radar, low cost & energy-efficient.
