Firstly, let's take a look at the basic knowledge of environmental testing
1. Test Purpose
The purpose of environmental testing is to examine the adaptability of the product to the environment, determine whether the environmental adaptability design of the product meets the contract requirements, and provide decision-making basis for acceptance and rejection.
2. The amount of stress used in the test
Environmental testing is a single stress or stress by stress inspection test, and each test standard covers a different number of test items. Among them, GJB150 has a total of 19 test items, MTL-STD-810 has a total of 20 test items, and the number of test items increased to 24 at 810F; The experimental projects mainly cover types such as temperature, humidity, salt mist, vibration, shock, air pressure, solar radiation, sand dust, rain, etc; The test samples should be selected based on their future usage environment and affected procedures, and generally more than 10 items should be inspected
3. Selection of Environmental Stress Values
Environmental testing selects extreme conditions, generally using severity instead of gentleness, that is, using the most extreme environmental conditions that the product may encounter during its life cycle as the testing conditions, which are destructive and generally simulate the working state of the product.
There are many environmental testing projects for intelligent products, and this time only the temperature and humidity related experimental projects are listed:Low temperature testing
Test purpose: To simulate the electrical performance of various components and parts of intelligent products working at low temperatures, and to detect defects in advance and improve them
Low temperature storage test
1) Number of intelligent products: 2 units
2) Test conditions:
After shutting down the test equipment, seal it with polyethylene film and place it in a room temperature test box.
&Nbsp Reduce to -30 ° C at a speed of 1 ° C/min and maintain for 6 hours Reduce from -30 ° C at a rate of 1 ° C/min to -40 ° C for 16 hours Increase from -40 ° C at a rate of 1 ° C/min to -30 ° C for 15 minutes Increase from -30 ° C at a rate of 1 ° C/min to+25 ° C for 2 hoursCheck the appearance of the product and test the adhesion test standard of the coating: Take out the tested intelligent product from the test box and immediately inspect the appearance After 2 hours of recovery under standard atmospheric test conditions, start the machine for inspection and ensure it meets the corresponding requirements
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China