Scene definition

I first investigated several mainstream mosquito repellent methods, distributed a questionnaire, summarized the reasons why users used and did not use these mosquito repellent methods, and summarized them as shown in Figure 2. Chemical mosquito repellents have been found to work best overall, but users may be concerned that long-term use will affect their health. Therefore, the scene is defined as being at the door, using chemical mosquito repellents to block mosquitoes from entering the home at the source. At the same time, through research, as shown in Figure 3 & 4, there have been relevant studies on blocking mosquitoes at the entrance, and there are also folk examples of hanging wormwood to prevent mosquitoes from entering, which supports the viability of this design.

User behavior research

After determining the scenario, I studied the user's behavior at home to determine the product logic. Using a family of three living in an apartment in a city as a typical user, the study used an installed smart peephole to count the behavior at the door within a month. According to statistics, the number of doorstep incidents is about 12-20 per day. Of these, the doors are opened 6-10 times, and the total opening time is about 2-3 minutes. The statistics on various types of events are shown in Figure 2 & 3, and it can be seen that they are repeated in a short period of time. Therefore, the product should be designed to work only when needed, that is, when the door is opened, and is most efficient. The entrance can be divided into events inside and outside the door. Through analysis and research of the two types, it was determined that the interaction logic detects that someone inside the door is close to starting work and leaving to stop; face recognition outside the door allows family members to start working immediately; otherwise, work starts when the door is opened.

Idealization

Since the product requires signal and electricity communication inside and outside the door, it was decided to use the existing peephole holes in the door to combine the mosquito repeller with the digital peephole. Based on this idea, the following five conceptual schemes were designed by arranging elements such as the inlet and outlet, camera, and mosquito repellent cartridge required for the product, comprehensively evaluating the size and efficiency, and finally selecting Plan B.

Product architecture

According to Solution B, the overall structure of the product is as above. The mosquito repellent uses ceramic atomizing tablets to quickly form a concentration, and a fan is used to blow through the curved surface structure of the Kangda effect to achieve large-scale mosquito protection that spreads rapidly. The design has two round elements on the front, with the camera, sensor, and Kangda effect curved air outlet on the top. The circular element below is a detachable and replaceable mosquito repellent bottle in the middle, and the surrounding area is an air inlet. The product uses a turbofan placed vertically to reduce thickness.

Design

The outer part of the product design door is pill-shape with two circular elements in the middle. CMF is black and white, and is divided into two layers of two colors from the side to reduce visual depth. The inside of the door is round and uses similar design elements, including a cat's eye screen, battery, charging port, etc.

Mosquito repellent box

The mosquito repellent box is designed to be transparent, making it easy to check the remaining amount of mosquito repellent. A magnet is used on the back for easy installation. The sponge underneath absorbs the mosquito repellent and touches the atomizer.

Installation & Usage

The inside and outside of the door of the product are connected through the peephole's hole. It is located on both sides of the door, and the part inside the door can be removed and charged separately. The inner part of the door is rotated and mounted on the base plate, as shown in Figure 2, and also has contacts for signaling and power supply.

Prototype

I also made a prototype of the product. The interior of the exterior panel is designed with a screen, battery, and charging port to achieve high-fidelity visual effects.