The company is committed to the introduction of Infineon SP37-based tire pressure monitoring solutions. This article refers to the address: http:// According to statistics from relevant departments and agencies, 70% of traffic accidents on highways in China are caused by tire pressure: tire pressure is too high, accounting for 20%, tire pressure is less than 57%, and others are 23%. A puncture occurs when the speed is above 160 km, and the death rate is 100%. Therefore, the tire pressure monitoring system (TPMS) has become the third largest car safety system after ABS and airbags. As of 2014, China's car ownership should be around 150 million. With the gradual increase in the call for the introduction of relevant compulsory regulations, this market will heat up sharply. It is not difficult to see from the above two figures that the global TPMS market including China will usher in a rapid growth momentum in the next few years. In response to market demand, Dalian Dapin Jiashun launched a high-performance tire pressure monitoring solution based on Infineon products. Figure 1 - Worldwide regulations and market requirements for tire pressure monitoring Infineon's SP37 series, which is the third generation of the SP3x family, has sold more than 200 million products worldwide since 2010. The SP37 is a tire pressure sensor chip with a frequency range of 300 to 450 MHz. It integrates a sensor, a single-chip microcomputer and an RF transmitter unit. The maximum output power is +8 dBm (50 Ω load) and the minimum operation is 1.9 V. The internal circuit includes three parts: a power supply filter circuit, a crystal oscillator circuit and an antenna matching circuit. ? Internally integrated sensor - Pressure Sensor - Accelerometer - Temperature Sensor - Battery voltage sensor ? Internally integrated peripheral resources - 8051 kernel - Flash memory - 3 GPIOs - ADC - 125KHz low frequency receiving unit - 315/433MHz transmitting unit Figure 2 - Infineon SP37 internal architecture diagram of Dalian Dapinjia agent Program features: ? Sensor communication fault alarm duration: ≤ 10min; ? Battery model: CR2450HR (electricity: 550mAh); ? RF frequency: 433.92 ± 0.1MHz; ? No RF emission average operating current: ≤ 1μA; ? RF transmission maximum operating current: ≤ 15mA; ? High frequency transmission power: 7 ~ 9dBm @ 50Ω; ? High frequency modulation mode: FSK (9.6Kbps); ? Low frequency receiving frequency: 125 ± 5 KHz; ? Low frequency receiving mode: ASK (3.9Kbps); ? Low frequency signal receiving sensitivity: 1~50mVp-p; ? Pressure measurement range: 0~4.5Bar; ? Pressure measurement resolution: 25mBar; ? Temperature measurement resolution: 2 ° C; Pressure measurement accuracy: ±75 mBar @ -20°C~+70°C, ±150 mBar @ -40°C~+120°C; ? Temperature measurement accuracy: ± 4 ° C @ -20 ° C ~ +70 ° C; ? Resistance to rotation: ≥ 1500g; ? Operating temperature range: -40 ° C ~ +105 ° C; ? Storage temperature range: -40 ° C ~ +125 ° C. Figure 3 - Infineon SP37 tire pressure monitoring solution system top-level architecture model Figure 4 - Integraon SP37 tire pressure monitoring solution terminal system frame diagram (SP37, TDA5235/TDA5240) Figure 5 - Infineon SP37 sensor board of Dalian Dapinjia agent Figure 6 - Integraon SP37 tire pressure monitoring solution installation section of Dalian Dapinjia agent Figure 7 - Infineon SP37 tire pressure monitoring solution installation top view Figure 8 - Infineon SP37 tire pressure monitoring sensor specific parameters For more information about products and solutions, please refer to the official website of the General Assembly, and welcome to pay attention to the official Weibo (@大è”大) and the United Nations General WeChat platform: (search for "Large General University" or micro in the public account Signal wpg_holdings plus attention). About Dalian United Holdings: Dalianda Holdings is a leading electronic component distributor in the Asia Pacific region. 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