On December 8, 2015, the leading electronic components distributors dedicated to the Asia-Pacific market - Dachang Capital Holdings announced that its products were admitted to the INFINEON SP37 tire pressure monitoring solution.
According to statistics from relevant departments and institutions, 70% of traffic accidents on my country's highway are due to tire pressure: Temperature pressure is 20%, and the tire pressure is less than 57%, and the other is 23%. A puncture occurred while the speed of 160 kilometers, and the mortality rate solution is 100%. Therefore, the tire pressure monitoring system (TPMS) has become a third largest vehicle safety system after ABS and airbags.
As of 2014, China's car ownership should be about 150 million, and the voice of the launch related compulsory regulations is gradually high, this market will rise sharply. It is also difficult to see from the above two drawings, including China's global TPMS market will usher in the rapid growth momentum in the next few years. Daba Daba Jiao will meet market demand, this time the high-performance tire pressure monitoring solution based on Infineon products.
Figure 1 - Relevant regulations and market demand for tire pressure monitoring worldwide
The British SP37 series of the Dabin Dabi is the third generation of the SP3X family, and the family products have sold more than 200 million since 2010. The SP37 is a tire pressure sensor chip, an internal set sensor, a single-chip microcomputer (50 Ω load), the minimum output power +8 DBM (50 Ω load), the maximum output power +8 DBM (50 Ω load), the maximum output power +8 DBM (50 Ω load), the minimum output power +8 DBM (50 Ω load). Its internal circuitry includes three parts of the power filter circuit, a crystal circuit, and an antenna matching circuit.
Internal integrated sensor
- Pressure sensor
- Acceleration sensor
- Temperature sensor
- Battery voltage sensor
Internal integrated peripheral resources
- 8051 kernel
- Flash memory
- 3 GPIO
- ADC
125kHz low frequency receiving unit
- 315 / 433MHz launch unit
Figure 2 - Daba Daba Adding INFINEON SP37 internal architecture diagram
Program characteristics:
Sensor communication fault alarm time: ≤10min;
Battery model: CR2450HR (electricity: 550mAh);
RF frequency: 433.92 ± 0.1 MHz;
No radio frequency emission average operating current: ≤ 1μA;
RF emission maximum operating current: ≤15mA;
High frequency transmit power: 7 ~ 9dBm @ 50Ω;
High-frequency modulation method: FSK (9.6kbps);
Low frequency reception frequency: 125 ± 5 kHz;
Low frequency receiving method: ASK (3.9kbps);
Low frequency signal reception 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;
Rotating speed: ≥1500g;
Working temperature range: -40 ° C ~ + 105 ° C;
Storage temperature range: -40 ° C ~ + 125 ° C.
Figure 3 - Template model of tire pressure monitoring solution system for the INFINEON SP37 of Daba Dabu
Figure 4 - Temask Solutions Temperature Monitoring Solution Terminal System Framework of the Daba Dabu (SP37, TDA5235 / TDA5240)
Illustration 5 - Infineon SP37 sensor board of the big line
Figure 6 - Dalian big agent's infineon SP37 tire pressure monitoring solution installation cross-section
Figure 7 - Tire pressure monitoring solution for the INFINEON SP37 of the Daba Daba Agent
Illustration 8 - Dalian Daba Adding INFINEON SP37 Tire Monitoring Sensor Specific parameters
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