With the rapid development of social economy, haze pollution is becoming increasingly serious in China. The haze weather not only appears more and more frequently, but also becomes more and more serious. PM2.5 particles, the main component of haze, are the most harmful to human body and also the "culprit" of haze weather. PM2.5 promotes the formation of haze weather, which in turn can further aggravate the accumulation of PM2.5.

Beijing 352 Environmental Protection Technology Co., Ltd. came into being. Its brand name is "352", which originates from the saying "three under five divide two", and is intended to be the company's quick action on air governance. This time, I was lucky to get the opportunity to experience the 352 PM2.5 air detector on the iGo trial platform, and I would like to thank igao7 platform and 352 Technology Company.

Packaging

The packaging design of 352 detector is very simple. The working interface and name of the 352 detector are set off on the white background, giving a feeling of peace and cleanness, just like the air has been purified.

The upper and lower covers are fully wrapped. The upper and lower covers are thinner and smaller, so it takes a little effort to open them. It is hoped that two semicircular notches will be designed on both sides of the upper cover, so that the lower cover can be easily opened by the other hand.

The basic parameters and specifications of the detector are printed on the top of the bottom of the lower cover. It can be seen that the product is small in size, with its own energy source, and the measurement range can reach 0-9999ug/m ³.

After opening, the product placement design is also very simple. The detector body of the aluminum alloy frame, and the 1 meter long USB power cable.

All the property is owned, one machine, one line, one book, one certificate. The power cable and data cable are generally the standard configuration of current intelligent hardware products. At the transformer end, you can use the mobile phone or computer USB interface.

Appearance

Love to play computer games LOGO and iGAO7 stickers of the trial platform are symbols of trial experience honor.

The 352 air detector is very small, with a chest size of 55mm (no waist), a height of 89mm, and a weight of 240g. The feeling of holding it in the hand is as shown in the figure above.

Indicator light and LOGO pattern. The indicator light is always green when working, and orange when charging.

The body is surrounded by an integrated 6063-T5 aluminum alloy shell, which has a fine frosted texture. With the weight of a 2400 mA battery, it feels good in your hand.

There are two punching areas at the back, namely the air inlet and air outlet areas. These two areas cannot be blocked in the working state.

Below are the power switch key and miniUSB interface. Long press the power key for about 2 seconds to turn on and off the machine.

The bottom of the product is printed with basic company and product model information, as well as two-dimensional code, which can be scanned and downloaded directly from its APP program for installation, thus avoiding the trouble of searching and downloading in various markets. It is worth mentioning that the 352 detector has completed the RoHS and CE compulsory certification, which is an authoritative guarantee for consumers.

The screen above adopts 2.5D arc screen design, and the glass is Corning's third-generation gorilla product. From the angle of the screen edge, this screen is very round and smooth. The application of 2.5D arc screen is in line with some trends of current intelligent hardware products, which adds a lot of color to product design.

A PP

At present, the biggest feature of intelligent hardware products is APP, the control or display program on the mobile phone. This is the launch interface of 352, and the slogan is "China's 352, haze removal is fast". You can choose to register new users, or you can log in through QQ, WeChat, and Weibo authorized by a third party, which is very convenient.

The left figure is the main interface after logging in to the APP. After connecting the PM2.5 detector, the product will be displayed here. Click it to expand the detailed data page. The top left corner of the main interface is the personal center. Click it to view the series information in the right figure.

There is an integral center in the APP, and corresponding integral can be obtained according to the set rules. Under the "About" tag at the bottom of the user center is the APP system model, disclaimer, company name and contact information. When entering About Label, the version update will be automatically detected and a text prompt will be given.

The picture above shows the situation in the mall, where you can easily place an order. As 352's own mall, it currently mainly includes air purifier, PM2.5 air detector and other filter accessories.

If 352 air purifier is purchased, linkage can be set in APP. When the detector detects that the concentration of air PM2.5 exceeds the standard, it can automatically start the air purifier to make the air quality reach the standard as soon as possible. This linkage mode reduces human intervention and will be the entry point for smart hardware and smart home in the near future. The right figure shows the test result interface in APP. The upper part of the circle is the indoor air quality, and the lower part is the outdoor air quality, which can be seen in sharp contrast. Excellent air quality is shown in green, good and light pollution in yellow, and moderate and heavy pollution in red.

The PM2.5 detection page has real-time, 24:00 and Wednesday tags, which can be viewed freely.

From the weekly situation, the indoor air quality is slightly better than the outdoor air quality. In the settings, you can rename the device, select the spatial location, set the haze alarm switch, geographical location and other information.

Experience

There is a millet air purifier at home. The sensitivity test is carried out by comparing the measured values of air before and after purification.

The 352PM2.5 air detector adopts the laser scattering principle to detect PM2.5. After strict adjustment, the data error is ± 10%. As a conventional family use, this precision is fully qualified. From the video test, it can be seen that when the normal indoor air PM2.5 value is more than 100, it is placed at the air outlet of the air purifier, and the value starts to fall in a straight line until about 20.

The picture above shows that during the Spring Festival, someone came to visit the New Year on the first day of the lunar new year in his hometown. After smoking several cigarettes, the PM2.5 value in the living room reached the level of bursting, and the throat of non-smokers also felt obviously uncomfortable. Open the window and turn on the air conditioner (no purification function) for 1 hour, and the value drops to two digits.

On the second day of the lunar new year, there was a light snow. I thought the outdoor air would be very good, but the test value was still more than 200, and I didn't understand it.

summary

In general, the 352PM2.5 air detector is sensitive and fast, with relatively accurate values. In the current environment of poor air quality, it can provide us with a reference. If you buy the 352 air purifier that can be linked, you can also experience the smart home 2.0 era.  

Next, let's talk about the advantages and disadvantages of this PM2.5 air detector.

advantage:

·Fast detection and accurate numerical value;

·Sustainable monitoring under the condition of WIFI networking (if WIFI is not connected, it will automatically shut down after a period of time);

·The APP interface design is simple and easy to read, and the numerical results K line chart is intuitive and clear, which is convenient for observation and comparison;

·Metal body, not afraid of bumping, durable;

Insufficient:

·Too little information is displayed on the screen, and the function is single;

·The battery life of 2400mAh is average, and the continuous working condition basically lasts for one night (12-14 hours). Recommended settings Intermittent sampling measurement function For example, 1 minute detection interval of 15 minutes does not affect the overall data collection, but also greatly improves the endurance.

again I would like to thank igao7 platform and 352 Technology Company for their valuable experience opportunities.

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