1, the working principle of the airtightness tester is to fill the sealed workpiece with a certain pressure of gas, after a period of time to maintain pressure, detect whether the pressure drops, observe the calculation of the pressure change to determine whether the product has a leak, which is the conventional direct pressure test.
2, for the smart watch waterproof testing, the current mainstream waterproof testing method is to use compressed air as the detection medium of the GOEL (GOEL) watch waterproof testing machine for airtightness testing. Compressed air is colorless and odorless air.
3, the principle of the airtightness of the test device is usually utilized is the principle of thermal expansion and contraction of the gas.
4, test pressure and test time), you can start the cell phone airtight waterproof test. And cell phone airtight waterproof test using dry pure compressed air, will not have any impact on the phone, can realize the rapid cell phone airtight waterproof test to determine the phone qualified or not.
5, waterproof watch waterproof performance is mainly rely on the watch mirror, back cover and the middle frame of the gap between the silicone dispensing process to achieve sealing, so sports watches airtight waterproof test is mainly these parts of the test, to see if there are no gaps lead to the watch into the water.
6, after, and then do it. When testing airtightness, add water to the long-necked funnel, immerse the lower end in water, and then use hot water to heat the B or C device. If there are bubbles at D, the water surface of the long-necked funnel of A rises, the heating is stopped, the liquid level of the long-necked funnel returns to normal, and the conduit in D sucks back a - section of the water column, proving that the airtightness is good.
Software level protection assessment (referred to as "level assessment") refers to the assessment organization in accordance with the national network security level protection system and the relevant management norms, technical standards, non-state secret software information system security level protection status of the testing and evaluation activities.
The heads of public **** management organizations and public **** service units shall bear the management responsibility for carrying out security assessment of public **** information systems. All relevant authorities shall supervise the public **** management organizations and public **** service units under them to carry out security assessment of public **** information systems.
The first level, the information system is damaged, will cause damage to the legitimate rights and interests of citizens, legal persons and other organizations, but does not harm national security, social order and public **** interests.
What are the general testing and certification items for smart wearable products
The general product inspection items include appearance, labeling, use performance and safety performance. If necessary, there should also be environmental adaptability, durability (or life test) and reliability. In general, all inspection tests are carried out in accordance with the specified standards. In the standards underlying the test, the corresponding technical indicators and requirements are generally specified.
Company information: name, address, trademark, business license; product information: name, model, technical parameter table (such as more than one model, need to series of products differences in comparative information); instruction manual.
The goal of the LVD Directive is to ensure that electrical products sold and manufactured within the European Union are able to safeguard the safety of consumers during normal operation or in the event of a malfunction.
And the OPPOWatchECG Edition is the first smartwatch in China to pass the registration and certification of Class II medical devices by the FDA, as well as OPPO's first smart wearable device equipped with an ECG cardiac sensor.
This document is the CQC product certification factory quality assurance capability requirements, including the inspection requirements of the certified products and the requirements of the quality system of the manufacturing plant, in order to ensure that its production of certified products in line with the national certification standards and with the prototype of the type test in the specified degree of consistency.
Honor bracelet a2 how to measure sleep
Just wear the bracelet on the hand, the bracelet can be a real-time record of sports and sleep data, click on the screen to view the day's current cumulative number of steps, calories, sleep information, as shown in the following chart.
Glorious bracelet A2 adopts high-precision sleep algorithm, combined with the heart rate module, which can recognize the three states of deep sleep, light sleep and awake.
The principle of judging deep sleep and light sleep: when a person is in deep sleep, basically no movement is produced, and the time for movement to change becomes longer. The bracelet can make corresponding judgment according to this principle.
Introduce how to realize the sleep monitoring function setting for Huawei bracelet. First open the Huawei Sports Health app, click into the bracelet details page, find the health monitoring. Click on the scientific sleep option. Open the switch on the right side of the scientific sleep can be set successfully.
First make sure that the bracelet and phone are in a connected state, and download the latest Huawei Wear app and sports health app. open the Huawei Wear app scientific sleep switch, and wear the bracelet to sleep fully. Scroll down on the homepage of the app and synchronize the data. After sleeping, open the app to synchronize the data.