In the design of smart hotel solutions, intelligent power activation is one of the most critical requirements.
What Are the Pain Points of Intelligent Power Activation?
Traditional card-based power activation: Issues such as easy room card loss, poor smart experience, and inability to manage energy consumption intelligently.
Emerging cardless power activation: Problems like unstable power activation, high false triggering rate of lights, and imprecise algorithm logic.
As a leading enterprise in the smart guest control industry, Pujie Technology has successfully implemented hundreds of cardless power activation projects, thanks to three core elements: stable products, mature solutions, and rigorous algorithms. Today, let’s take an in-depth look at the secrets behind Pujie’s cardless power activation solution.
01. Introduction to Pujie’s Cardless Power Activation Solutions
Pujie offers two main types of cardless power activation solutions: wired and wireless, tailored to different hotel scenarios:
Wired solution: Requires pre-installed wiring to connect with the in-room electrical control system. It is suitable for new hotels or scenarios where wiring can be planned during renovation.
Wireless solution: Leverages Bluetooth MESH wireless communication technology, eliminating the need for additional wiring. It is more ideal for the renovation and upgrading of existing hotels or places with high requirements for wiring flexibility.
The core of Pujie’s cardless power activation solution lies in automatic power activation through accurate detection by relevant sensors and intelligent power activation algorithms, truly achieving “power on when occupied, power off when vacant”.
Automatic Power Activation via Card Swipe for Door Opening
The convenient experience begins the moment guests step into the hotel room. When the door is unlocked with a card, the room automatically powers on: lights turn on, and the air conditioner adjusts to a comfortable temperature. During check-out, guests can leave directly without worrying about pulling out a card to cut power. This “seamless convenience” perfectly aligns with the efficient service concept pursued by many hotels today.
Basic Principle of Cardless Power Activation
- When the door is opened, the door sensor is triggered, which then activates sensors in various areas. At this point, the system judges the room as “occupied” and activates power automatically.
- When the guest leaves the room and opens the door again, the sensors are triggered. The system then judges the room as “vacant” and cuts power.
- If the door is opened again while the room is occupied, the door sensor triggers the sensors. The system detects the presence of people and keeps the power on.
- At night when the guest is asleep, the sensors will not misjudge the room as “vacant” due to prolonged inactivity, preventing unexpected power cuts during the guest’s sleep.
02. Stability Relies on Sensor Design
(1) Application of Smart Door Sensors
In the cardless power activation solution, the smart door sensor serves as the “trigger core” that connects all scenarios.
1.When the door is opened or closed, the door sensor is activated and sends an “initial command” to the sensors.
2.After receiving the signal, the sensors verify the scenario (e.g., human presence detection) to avoid false triggers. They then convert the integrated information into control signals and transmit them to the power activation module, ultimately achieving the smart effect of “power on when the door opens, delayed power off when the door closes”.
Sensors are a key component of the cardless power activation solution, mainly divided into microwave human presence sensors and infrared human presence sensors.
(2) Application of Microwave Sensors
Microwave human presence sensors are typically installed in the bed-end area and bathroom area.
Microwave Human Presence Sensor
High sensitivity: Quickly captures subtle movements in the detection area, even recognizing small movements of the target.
Strong penetration: Easily penetrates common materials such as glass and thin wood panels, eliminating concerns about obstructions affecting detection and greatly increasing installation flexibility.
Wide detection range: In a standard hotel room, the effective detection diameter stably reaches 6-8 meters, forming a broad circular detection area with no blind spots.
Strong environmental adaptability: Unaffected by temperature fluctuations. Even with large temperature differences between indoor and outdoor environments, it maintains stable detection without reduced sensitivity or false triggers.
Solves static detection pain points: Accurately detects nearly stationary people (e.g., sitting quietly in the bathroom, washing up, or briefly staying at the bed end), avoiding detection failure due to minimal human movement.
(3) Application of Infrared Sensors
Infrared human presence sensors mainly cover the corridor area. For larger rooms, an additional infrared sensor is installed between the sofa and desk.
Infrared Human Presence Sensor
Working principle: Operates based on pyroelectric sensing, enabling sensitive detection of moving humans.
Detection range: In a standard hotel room, the effective detection diameter stably reaches 4-5 meters, easily covering core activity areas in the room.
Environmental impact: Sensitivity is affected by the environment. In winter, thick clothing worn by humans weakens the thermal signals received by the sensor, leading to reduced sensitivity.
By combining microwave and infrared technologies—using infrared sensors in the corridor area and microwave sensors in the bathroom and bed-end area—Pujie leverages the advantages of both technologies to more accurately detect whether there are people in the room.
03. Dynamic Management: Convenience & Energy Efficiency
During the guest’s stay, Pujie’s cardless power activation solution realizes dynamic management of room power through the combination of “infrared sensors + AI algorithms”, ensuring guest convenience while avoiding energy waste.
When the guest goes out with belongings, the infrared sensor detects the room is vacant. The algorithm then combines signals such as “door closed” and “luggage not carried” (linked with smart door locks) to judge a short-term absence. It then gradually turns off the TV and lighting, while keeping power supply to essential devices like the refrigerator and router.
If the system detects a long-term absence with luggage taken out, it enters deep energy-saving mode, cutting power to non-essential devices except emergency equipment. This fundamentally eliminates “power consumption when vacant” and achieves refined, scenario-based energy management for hotel rooms.
04. Cost Reduction, Efficiency Improvement & Competitiveness Enhancement
From the above introduction, it is clear that Pujie’s cardless power activation solution delivers the following benefits:
Enhanced smart experience: Automatic power off when leaving, no manual operation required, improving guest satisfaction.
Reduced energy consumption & electricity costs: Automatic power off through accurate detection, effectively lowering hotel energy use and practicing environmental protection.
Elevated hotel image: Intelligent services enhance the hotel’s brand image, attracting more guests who value quality and technology.
Integration with energy management platforms: It can not only connect deeply with the hotel’s PMS (Property Management System) but also integrate with Pujie’s energy management platform and hotel guest control management SaaS system, building an integrated management system with interconnected data.