The car inflation pump is designed to solve the problem of inflating car tires, ensuring normal tire pressure and ensuring driving safety and comfort. The air pump adopts advanced PCBA solution, integrating intelligent technology and exquisite craftsmanship, with functions such as small size, intelligent digital display, preset tire pressure, dynamic measurement, etc., and is deeply loved by travelers.



1、 Introduction to the Pump Scheme for Sedans



The principle of the electric car air pump scheme is simple, and it automatically detects tire pressure during use. When the pressure is lower than the set value, the motor starts and pumps compressed gas into the tire through the intake pipe. When the car's air pump reaches the set upper limit of tire gas pressure, turn off the motor.



The car air pump consists of pressure sensors, ADC chips, and related components such as the main control chip. The functional parameters of the car air pump solution are as follows:



Display mode: LED/LCD display, measurement and setting are displayed on the same screen. (Mainly LED)



Unit: 4, cyclic switching order PSI KPA、Bar、Kg/cm2



Measurement range:



3.0~150.0PSI; 20~1030KPA



0.2~10.30Bar; 0.2~10.50Kg/cm2



It is necessary to output different parameter requirements according to different pump movements



Setting range:



3~120PSI; 20~825KPA



0.2~8.25Bar; 0.2~10.50 Kg/cm2



Measurement accuracy:+ 1% F.S (+1.5 PSI,+10 KPA,+0.1 Bar,+0.1 Kg/cm2).



Control accuracy:+ 1% F.S (+1.5 PSI,+10 KPA,+0.1 Bar,+0.1 Kg/cm2)



Measurement resolution: 0.5PSI, 5KPA, 0.05Bar, 0.05Kg/cm2



Set resolution: 0.5PSI, 5KPA, 0.05Bar, 0.05Kg/cm2



Motor control: MOS tube, external locking switch (charging and closing)



Lighting control: 12V current limiting, external locking switch



Memory function: No loss of units and set values in case of power failure



Temperature range: chip working range -10~60 ℃



Temperature compensation: software temperature compensation



Inflation display: Display the tire pressure during the inflation process



Inflation compensation: Compensate 0.2 PSI after inflating to the preset value



Over range: Exceeding the measurement range, Err is displayed



Zero point tracking: software real-time tracking



Add emergency start-up power supply to the function



Button: 5 (SET/+/-/sos) switches



The chip SIC8833 in the car air pump scheme has been widely used in the following aspects:



1. Improve measurement accuracy: By using high-precision ADC chips, higher precision measurements can be achieved to meet the precise measurement needs of users.



2. Improve stability: The SIC8833 chip has excellent anti-interference ability, ensuring the stability of the air pump in various environments.



3. Reduce power consumption: Adopting a low-power design makes the air pump more energy-efficient and environmentally friendly, extending battery life.



4. Simplify circuit design: The SIC8833 chip has rich interfaces and functions, simplifying the circuit design of the air pump and reducing production costs.



Main characteristics of car air pump chip



The SIC8833 chip has high-performance RISC CPU, 8-bit microcontroller MCU and other features, as well as rich peripheral functions such as 24 bit bidirectional I/O ports, 1-channel input fully differential 24 bit Sigma Delta ADC, etc. In addition, the chip also has built-in temperature sensors, low voltage detection (LVD) pins, 1-channel UART and other functions, providing strong support for the performance and stability of car air pumps.