· Tire pressure monitoring or forced installation of billions of business opportunities

Recently, there have been rumors that the latest regulations on automobile tire pressure have entered the end of brewing. The new regulations have established mandatory standards for tire pressure, that is, automobile manufacturers must install tire pressure monitoring systems on vehicles in accordance with relevant requirements. The industry expects that orders for listed companies in the automotive sensor category are expected to increase significantly. After the tire pressure monitoring, the loading market is about to usher in a new growth inflection point. So, which companies are ready now?
The EU study shows that more than 64% of cars and more than 75% of trucks are under pressure on the tires while driving. The consequences can be life-threatening. Too low tire pressure will lengthen the braking distance and deteriorate the handling of the car. At the same time, abnormal tire pressure will not only adversely affect driving safety, but also increase additional costs and environmental burden. If the car tire pressure is 0.3 bar lower than the specified pressure, the fuel consumption will increase by 1.5%.
When the tire pressure is too high, the contact area between the tire and the ground is reduced, and at this time, the pressure on the tire is relatively increased, and the grip of the tire is affected. In addition, when the vehicle passes through the gully or bumpy road surface, there is not enough space in the tire to absorb the vibration. In addition to affecting the stability of the driving and the ride comfort, the impact on the suspension system is increased, which also brings harm. At the same time, the hidden danger of puncture at high temperatures will increase accordingly.
The air pressure of each tire will continue to drop by 0.2 bar within 3 months of the intersection of the tire and the hub. Therefore, it should be checked regularly and the tire pressure should be increased if necessary. Since most car and truck drivers are driving under too low tire pressure, it is recommended to use a direct tire pressure monitoring system that displays the current tire pressure by numerical values.
Of course, many countries and regions have begun to develop regulations requiring the installation of this technology. The United States began requiring new cars to install TPMS modules in 2005. Afterwards, many other regions followed suit. The EU and Taiwan regions require new vehicles to be installed with TPMS modules since 2014. Japan, South Korea and Russia began installation in 2015. The Chinese mainland is also studying.
Below are some of the companies that produce tire pressure monitoring systems.
Freescale is aware that maintenance workers are not careful about dismantling tires, which is an important cause of TMPS damage, so manufacturers are trying to make this sensor smaller and smaller.
Shanghai Baolong Automotive Technology Co., Ltd. has released a tire pressure monitoring system (TPMS) module based on Freescale FXTH87 tire pressure monitoring system. Its chip is smaller than 1 yuan coin and weighs only 8 grams, which greatly reduces the improper operation. The chance of damage.
Baolong's D-type TPMS module uses Freescale's miniature tire pressure monitoring system to ensure that the tire pressure is within the normal range, preventing dangerous punctures and abortions, and performance is not affected at high speeds. At the same time, this TPMS also has features such as automatic positioning.
Schrader
Since last year, Schrader Electronics of the United Kingdom has teamed up with Nanjing Kamet Auto Accessories Co., Ltd. to enter the mainland market.
Schrader has a large global market share of TPMS. It is famous for its original companies such as GM, Ford, Chrysler, Nissan, Renault and Citroen. It is worth mentioning that Schrader's EasySensor is the first patent in the world and Can replace any OE sensor.
On July 7th, Continental Group, the world-renowned tire manufacturer Continental, announced in Germany that it has successfully developed smart tire pressure sensing technology in the near future, which realizes the possibility of automatically reading the tread depth.
In the future, vehicles using Continental's smart tire pressure sensor can accurately know whether the vehicle has reached the maximum load, and the future vehicle assistance system can be combined with the vehicle load information provided by the tire pressure sensor to make corresponding adjustments to ensure the vehicle. Driving safety and comfort.
However, the technology will not be available in 2017 until the new model of the Continental Tire Pressure Monitoring System (eTIS).
As a company with a large shipment volume, Infineon's tire pressure monitoring sensors are also very competitive. Its latest product is the SP37 chip, which uses a system-in-package (SIP), and integrates pressure sensors, accelerometers, temperature sensors, voltage sensors, low-power microcontrollers, LF receivers, and RF transmitters on two die. And so on.
In addition, the tire pressure alarm brand like "Iron General" uses Infineon's solution.
In the face of numerous TPMS brands, how do those after-loading consumers choose?
According to the sensor installation position, it can be divided into built-in tire pressure monitoring and external tire pressure monitoring.
The built-in tire pressure monitoring is installed inside the tire. It is necessary to remove the tire to replace the original nozzle. Installation and maintenance will be troublesome; the external tire pressure detection is directly installed on the tire nozzle, but the tire is usually removed when the atmosphere is normal. Next, it may be taken off and taken away.
The accuracy of the measurement, the external and built-in two methods of tire pressure detection are basically the same, there will be no big difference, but the built-in tire pressure monitoring may be more accurate.
According to the measurement method, it can be divided into indirect tire pressure monitoring and direct tire pressure monitoring.
Indirect tire pressure monitoring is to detect the change of tire speed through ABS system, but it is impossible to determine which tire has a fault. At the same time, when two or more tires fail, it can't alarm, and it will fail after the speed exceeds 100km/h.
Direct tire pressure detection is a direct installation of the sensor for detection, which can accurately display the air pressure of each tire, and will alarm immediately if an abnormality occurs.
The above is very clear? Under the promotion of policies and regulations, coupled with the continuous reduction of costs, many OEMs have switched from indirect systems to direct systems, and high-end TPMS has become the standard for more and more new models.
High-end TPMS refers to the integration of the tire's automatic positioning function into a direct TPMS system. The automatic positioning function of the tire refers to identifying and distinguishing the information sent by the four tires. In this case, for example, the air pressure of the right front wheel can be correctly identified and displayed without any human operation.

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