ESP Smoke Detection Technology
ESP replaces the internal chamber found in traditional smoke detectors with an optical smoke detector IC to detect smoke outside the device. The IC pulses infrared light (invisible to the human eye) to check for airborne particles and visible light to confirm whether the particles are smoke. Because smoke reflects infrared and visible light differently than nuisances like steam, dust, or cooking aerosols, ESP only alarms when smoke is present.
ESP is enabled by Maxim Integrated's smoke detector IC, MAX30105, which integrates multiple LEDs, a photodiode, and signal processing circuitry. The sensor is compact, rejects ambient light efficiently, and is optimized for particle sizing which is key to distinguishing smoke from nuisances.
ESP is superior to chamber-based smoke detection in many ways:
Performance When escaping a fire, seconds matter. By looking into the open room, ESP can detect fires before smoke reaches the detector.
Accuracy Nuisance alarms are one of the most serious issues facing the industry today. By using both infrared and visible light, ESP knows what is smoke and what isn’t.
Ruggedness The only thing that enters or exits an ESP smoke detector is light. Its sealed construction is especially suitable in harsh or rugged environments.
Reliability The smoke detector IC platform is proven. Originally designed for the smartphone industry, it has already been installed in hundreds of millions of devices worldwide.
Manufacturability Every smoke detector IC is factory calibrated. ESP smoke detectors can ship without performing a separate calibration step.
Remarkably, in addition to these advantages, the power consumption and manufacturing cost of an ESP smoke detector are equivalent to a traditional photoelectric smoke detector.