Determination of key electronic components
In the design of the water purifier control panel, the key electronic components must be determined first. The microcontroller (MCU) is the core component and needs to be selected according to the functional complexity of the control panel, the computing speed requirements and the cost budget. For example, for a basic water purifier control panel with simpler functions, an 8-bit or 16-bit MCU may be sufficient to meet the requirements, while for a high-end control panel with intelligent interconnection, multi-mode control and complex display functions, a 32-bit high-performance MCU may be required. Display components such as liquid crystal display (LCD) or organic light-emitting diode display (OLED). LCD has relatively low cost and mature technology, which is suitable for large-scale production; OLED has the advantages of self-luminescence, wide viewing angle and high contrast, but the cost is higher and can be selected according to product positioning. In addition, whether the key components are mechanical or touch-type, factors such as sensitivity, durability and waterproof performance must be considered to ensure long-term stable operation in a humid kitchen environment.
Component performance and environmental adaptability
The performance parameters of the selected electronic components must meet the working requirements of the water purifier control panel and adapt to its use environment. For example, the power management chip should be able to effectively handle the unstable input voltage, provide a stable working voltage for the control panel, and have overvoltage and overcurrent protection functions to prevent other components from being damaged by voltage fluctuations. In terms of environmental adaptability, since the water purifier may be in an environment with high temperature, high humidity, or even certain acid and alkali corrosion, the electronic components must have good high temperature resistance, moisture resistance, and corrosion resistance. Passive components such as resistors and capacitors should choose models with wide temperature characteristics and moisture-proof coatings; integrated circuit chips should also undergo special packaging treatment to enhance their ability to resist environmental interference and ensure reliable operation in harsh environments.
Reliability testing and verification
In order to ensure that the control panel composed of electronic components has high reliability, comprehensive reliability testing is required. In the R&D stage, functional tests are carried out to verify whether the functions of each component and the entire control panel meet the design requirements; environmental stress tests are carried out, including high temperature aging tests, low temperature start-up tests, humidity tests, vibration tests, etc., to simulate various harsh environmental conditions and expose potential component failures or poor welding problems. For example, the high temperature aging test can continuously run the control panel for several hours or even days in an environment of 50℃ to 70℃ to observe whether there is any component parameter drift or failure. In addition, electromagnetic compatibility (EMC) testing is required to ensure that the control panel will not be interfered with or interfere with the outside in a complex electromagnetic environment, affecting the normal operation of other electrical equipment.
Supply Chain and Quality Control
A stable and reliable supply chain is an important part of ensuring the quality of electronic components. Establish long-term cooperative relationships with well-known electronic component suppliers to ensure that the purchased components are of regular source and quality. In the component procurement process, strictly implement the quality inspection process, conduct random inspections or full inspections on each batch of components, and check whether their appearance, electrical parameters, weldability and other indicators are qualified. At the same time, establish a component quality traceability system. Once a problem is found, the problem batch and supplier can be quickly located and timely measures can be taken. In the production and assembly process, strengthen the control of production processes, such as welding temperature, welding time, assembly accuracy, etc., to avoid component damage or reduced reliability due to improper production processes, thereby ensuring the reliability of the Water purifier control panel from the source.
