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Recently there have been rumors that the latest automobile tire pressure related regulations have entered the brewing end, the new regulations set the mandatory standards for tire pressure, that automobile manufacturers must be in accordance with the relevant requirements in the car tire pressure monitoring system installed. The industry expects orders for automotive sensor companies to increase significantly. Tire pressure monitoring after the market is about to usher in a new turning point in growth. So, which companies are ready now?
According to the EU study, more than 64% of cars and more than 75% of trucks are under pressure during driving. The consequences may be life-threatening. Too low tire pressure will increase the braking distance and deteriorate the control of the car. At the same time, abnormal tire pressure will not only adversely affect driving safety, but also increase the extra cost and environmental burden. If passenger car tire pressure is 0.3 bar below the specified pressure, fuel consumption will increase by 1.5%.
When the tire pressure is too high, the contact area between the tire and the ground will be reduced. At this time, the pressure on the tire is relatively increased, and the tire's grip will be affected. In addition, when the vehicle passes through a trench or a bumpy road, there is not enough space in the tire to absorb the vibration. In addition to affecting the stability and ride comfort of the driving, the impact on the suspension system will also be increased, which will also bring about harm. At the same time, the risk of puncture at high temperatures will increase correspondingly.
The air pressure of each tire will continue to drop by 0.2 bar within 3 months at the junction of the tire and the hub. Therefore, check regularly and increase tire pressure if necessary. Since most car and truck drivers run with too low tire pressure, a direct tire pressure monitoring system is recommended, which can numerically indicate the tire pressure of the current tire.
Of course, many countries and regions have begun to draw up regulations that require the installation of this technology. The United States began requiring new cars to install TPMS modules in 2005. Afterwards, many other regions have followed suit. The European Union and Taiwan Province require new cars to install TPMS modules from 2014, and Japan, South Korea and Russia began to require installation in 2015. And mainland China is also studying it.
Here are some companies that produce tire pressure monitoring systems.
Freescale
It is understood that the carelessness of the maintenance workers in dismantling the replacement tires is an important cause of the damage to the TMPS. Therefore, various manufacturers are trying to make the sensor smaller and smaller.
Shanghai Baolong Automotive Technology Co., Ltd. has released a tire pressure monitoring system (TPMS) module based on the Freescale FXTH87 tire pressure monitoring system. The chip is smaller than a one-dollar coin and weighs only 8 grams, greatly reducing the number of improper operation. The chance of damage.
Baolong's D-type TPMS module uses the Freescale miniature tire pressure monitoring system to ensure that the tire pressure is in the normal range, to prevent dangerous punctures and abortions, and performance will not be affected at high speeds. At the same time, this TPMS also has features such as automatic positioning.
Schrader
Since the beginning of last year, Schrader Electronics UK has teamed up with Nanjing Carmeite Auto Accessories Co., Ltd. to enter the mainland market.
Schrader has a large global market share of TPMS and is known worldwide as a company with GM, Ford, Chrysler, Nissan, Renault, Citroen, etc. It is worth mentioning that Schrader's EasySensor is the world's first patented and Can replace any OE sensor.
Continental Group
On May 7, the Continental Group, which is owned by Continental, a world-renowned tire manufacturer, announced in Germany that it has successfully developed intelligent tire pressure sensing technology in the near future and realized the possibility of automatically reading 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 future vehicle auxiliary systems can be combined with vehicle load information provided by tire pressure sensors to make appropriate adjustments to ensure that vehicles Travel safety and comfort.
However, this technology will not be available until 2017 in new models equipped with the Continental Tire Pressure Monitoring System (eTIS).
Infineon
As a large shipment company, Infineon tire pressure monitoring sensors are also very competitive. Its latest product is the SP37 chip, which uses a system-in-package (SIP) and integrates a pressure sensor, an accelerometer, a temperature sensor, a voltage sensor, a low-power microcontroller, an LF receiver, and an RF transmitter on two dies. Etc.
In addition, tire pressure alarm brands such as “Iron General†use Infineon’s solution.
Faced with a large number of TPMS brands, what should these consumers choose?
According to the sensor installation position can be divided into built-in tire pressure monitoring and external tire pressure monitoring.
The built-in tire pressure monitoring is installed inside the tires. The tires need to be removed to replace the original gas nozzles. The installation and maintenance will be more troublesome; the external tire pressure detection is directly installed on the tire nozzles, but the tires usually need to be disassembled in the atmosphere. It may also be taken down and taken away.
With regard to the accuracy of measurement, the tire pressure detection scheme adopted by the external and internal methods is basically the same, and there will not be much difference, but the built-in tire pressure monitoring may be more accurate.
According to the measurement methods, it can be divided into indirect tire pressure monitoring and direct tire pressure monitoring.
Indirect tire pressure monitoring is based on the ABS system to detect changes in tire speed, but it is not possible to determine which tire has failed. At the same time, if more than two tires fail, they cannot be alarmed, and they will fail when the vehicle speed exceeds 100 km/h.
Direct tire pressure detection is directly installed on the sensor to detect and accurately display the pressure of each tire. If an abnormality occurs, it will immediately alarm.
Above is very clear, right? Driven by policies and regulations, coupled with continuous reductions in costs, many OEMs have switched from indirect systems to direct systems, and high-end TPMS has become standard on more and more new models.
High-end TPMS refers to the integration of the tire's automatic positioning functionality with a direct TPMS system. The automatic positioning function of the tire refers to identifying and distinguishing the information transmitted by the four tires. In this case, for example, the pressure of the right front wheel can be correctly recognized and displayed without any human operation.