As a standing tool in daily life, inflatable pumps are widely used in automobiles, bicycles, sports equipment and other appliances, and greatly facilitate people's daily life with their efficient and accurate inflating capacity. With the continuous innovation of technology, traditional inflatable pumps continue to pursue higher quality and intelligent experience. To this end, Xinhai Technology (stock code: 688595) has launched a new CS8M188, which can be perfectly adapted to the intelligent inflator pump solution, bringing new choices and vitality to the inflator pump control chip market.

1 Principle and application of inflator pump

The principle of operation of an inflatable pump is relatively simple and efficient, with a motor driving a piston in a reciprocating motion that compresses air and delivers it to the container or equipment that needs to be inflated. This process requires a high compression capacity of the inflator pump and precise control of the inflating pressure to ensure the safe use of the vessel or equipment.

The intelligent inflator pump detects the tire pressure in real time through the air pressure sensor, and the analog output of the sensor is converted into a digital signal after being processed by the chip's built-in precision signal chain circuit, and then the chip calculates the air pressure value to control the inflation pressure value in real time. In addition to inflating cars, electric vehicles, bicycles, balls and other items, intelligent inflatable pump products can also add emergency lighting, power bank and other functions with some peripheral circuits to further enhance the added value and user experience of the product.

2 Xinhai intelligent inflatable pump application scheme

Chipsea Technology CS8M188 intelligent inflator pump application solution, using air pressure sensors to monitor the air pressure of tires or containers in real time, and ensuring the accuracy and stability of air pressure data through built-in high-precision ADC and signal chain circuits. In view of the problem that the barometric pressure sensor is easy to be affected by temperature, the CS8M188 specially designed temperature compensation function, which can be accurately compensated by using the built-in temperature sensor or external NTC, which effectively solves the problem of temperature drift and enhances the applicability and reliability of the inflator pump.

CS8M188 supports NTC direct measurement, without additional resistance components, simplifies the system circuit design, and makes the scheme more concise and efficient, especially suitable for simple barometric pressure detection fields such as handheld tire pressure gauge and digital display air gun.

CS8M188 schematic diagram of the NTC measurement circuit

For smart inflatable pump products that require digital display and outdoor use, CS8M188 built-in high-brightness LED driver and support 9×8 LED display, which can save external LED display driver chips. At the same time, the LED circuit supports automatic scanning, which does not require complicated manual drive code, which can save more program space for other purposes.

Its high voltage and high current characteristics can support the outdoor display of the device, so that users can see the display content clearly without interference from sunlight. At the same time, the chip generates less heat, which is more conducive to long-term reliable work.

CS8M188 schematic diagram of the driving LED circuit

At the same time, the CS8M188 is equipped with rich peripheral resources such as UART communication interface, timer and temperature sensor, which provides a strong hardware foundation for the design of intelligent inflator pumps.

Block diagram of a lithium battery inflatable pump system based on CS8M188

In addition to CS8M188, Xinhai Technology also provides special products such as CSU18P88 and CSU18M96, which can be applied to different inflator pump application scenarios. For subdivided applications that require complex peripherals, such as lithium-ion inflatable pumps, CS8M188 and CSU18M96 can be selected, which have a wealth of peripherals to meet the functional requirements of inflatable pumps. In addition, CSU18P88 and CSU18M96 are more suitable for complex application scenarios that require liquid crystal display.

Chipsea Technology Inflator Pump Application Product List

3 CS8M188 introduction of new products

CS8M188 is a new high-performance 8-bit RISC SOC chip launched by Chipsea Technology, which integrates 24b Sigma-Delta ADC and 12b SAR ADC, which can provide accurate analog signal processing capabilities. The chip has built-in 8K× 16-bit Flash memory and 488-byte SRAM.

In terms of analog signal processing, CS8M188 is equipped with high-precision ADC, built-in amplifier and a variety of VS excitation sources, which can meet various analog signal acquisition and processing needs. At the same time, its rich I/O ports and interrupt functions enhance the ability to connect and interact with external devices.

In terms of display, CS8M188 has a built-in low-resistance and high-voltage LED driver circuit, which supports driving up to 72pcs LED, which can meet most display scenarios.

The CS8M188's low power consumption, wide operating voltage range and multiple packaging forms make it perform well in different application scenarios. Its low power consumption in normal mode, low power consumption and sleep mode effectively prolong the service life of the device. The wide voltage and wide temperature working range also ensure the stable operation of the chip in various harsh environments.

In addition, the chip also has sufficient pin resources and abundant peripheral resources, which supports up to 27pin I/O, as well as peripheral resources such as UART, Timer, PWM, and SAR-ADC, which can meet the functional requirements of charge and discharge management, motor drive, and key scanning.

At present, the CS8M188-based intelligent inflator pump application scheme has been verified by customers in batches, and the quality is stable and reliable. In the future, Chipsea Technology will continue to devote itself to developing more powerful and cost-effective solutions, bringing more innovative products and terminal applications, and bringing more health, comfort and convenience to people's lives.

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