The evolutionary history of the air pump solution is a link in the development of electronic technology in human history. Electronic technology, especially microelectronics technology, is the most rapidly developing and most widely influential technological achievement in the 20th century. The core of electronic technology is electronic devices. The advancement and upgrading of electronic devices have caused great changes in electronic circuits, and many new circuits and applications have emerged. Therefore, the history of the development of electronic technology can also be said to be the history of the continuous upgrading of electronic devices, and also the history of the continuous intelligentization of electronic products such as air pump solutions.
The air pump solution was initially developed mechanically, and then slowly evolved into a cylinder, pressure sensor, ADC chip and main control chip, which can make the air pump have intelligent inflation function and transform into a wireless air pump solution. It has functions such as precise pressure detection and overcharge and over-discharge. Using the combined design of an ADC chip and a pressure sensor, it can sense the air pressure inside the basketball and drive the cylinder to inflate the basketball. Once the gas reaches the pressure value set by the pressure inflation pump, the main control chip will stop the inflation action in time and end the inflation. The entire process is fully automated. The wireless air pump solution does not require manual monitoring and can complete the work independently.
Pressure sensor function of the wireless air pump solution: The
pressure sensor DSH700B of the wireless air pump solution is an air pressure indication chip. This chip integrates an air pressure sensor and a high-precision ADC. It is small and easy to use in various absolute pressure indication application scenarios. . DSH700B can detect 4 air pressure points. Through internal trimming technology, it can ensure that the air pressure detection error is less than 1%. The output adopts OPENDRAIN structure, which is convenient for using IO or LED indication.
ADC chip function of the wireless air pump solution:
The ADC chip CS1237 of the wireless air pump solution is a high-precision, low-power analog-to-digital conversion chip with a differential input channel, built-in temperature sensor and high-precision oscillator. The MCU can communicate with the CS1237 through the 2-wire SPI interface SCLK and DRDY to configure it, such as channel selection, PGA selection, output rate selection, etc.
Main control chip functions of wireless air pump solution:
The chip DSH38MB89 is an 8-bit RISC architecture high-performance microcontroller that integrates a 24-bit high-precision ADC and LCD display module. Internally integrated 8k*16Bits MTP program memory.
High-performance RISC CPU
8-bit microcontroller MCU
built-in 8K×16-bit MTP programmable memory (1000 times of programming)
896-byte data memory (SRAM)
has only 43 single-word instructions
and 8-level storage stack
Analog features
24-bit resolution
Internally integrated programmable gain amplifier
ADC output rate 10Hz~5KHz
Built-in charge pump
Built-in voltage regulator for sensors and modulators
Peripheral features
37-bit bidirectional I/O port
Built-in 10-bit SAR ADC
4×20/6x18 LCD driver
Two different LCD drive waveforms can be selected
Different bias voltage generation methods can be selected