70% of traffic accidents are caused by flat tires.
With the rapid popularization of automobiles, traffic accidents are increasing. When the car is driving at high speed, tire failure is the most unpredictable danger for the driver, which has caused a lot of traffic accidents. According to statistics, more than 70% of traffic accidents on expressways are caused by puncture, and major traffic accidents caused by puncture account for 35% of all traffic accidents. In the United States, the proportion of traffic accidents caused by tire pressure is as high as 80%. The reasons for tire puncture are: high tire pressure accounts for 20%, insufficient tire pressure accounts for 57%, and others account for 23%. Car condition is one of the main killers of automobile traffic accidents at present! Experts from the Rubber Tire Quality Supervision Center concluded that maintaining the standard tire pressure and finding tire leakage in time are the key to prevent tire puncture.
A traffic accident caused by the sudden rupture of Firestone tire tread in the United States resulted in 174 Americans killed and more than 70 injured. In 200 1 year, Ford announced the recall of130,000 defective firestone tires that were in use at that time, and then cut off the 95-year cooperation relationship with firestone. The flint incident directly led the American government to pass legislation to force the installation of real-time tire pressure monitoring devices on newly manufactured cars to ensure driving safety.
Maintaining standard tire pressure is the key to ensure driving safety.
Maintaining standard tire pressure plays an important role in ensuring driving safety and prolonging tire service life. When the tire pressure is normal, the tire is completely attached to the ground and the stress on the carcass is uniform; Excessive tire pressure will cause excessive wear of tire center, thus shortening tire life; The cord fabric is often kept in tension, and the tire is easily damaged. When a tire with high air pressure hits a stone on the road surface or passes on a rugged road surface, it will burst due to instantaneous stress concentration. The tire pressure is insufficient, and the sidewall bulge is closer to the ground, which is very vulnerable to trauma. The tire will be severely deformed and the internal temperature will rise rapidly, leading to the peeling of the tire crown; The deflection of the cord causes the sidewall to heat up, so that the cord fabric is peeled off and broken. In addition, it will make the shoulder wear excessively and shorten the service life of the tire. Insufficient tire pressure can also lead to "standing wave" phenomenon. When the tire is running, the contact part between the tire and the ground will bend left and right due to the load. When the tire rotates off the ground, the curved part will return to its original state with the pressure in the tire. However, if the tire pressure is insufficient or the speed is too fast, it will be too late for the bending part to return to its original state. At this time, the tire will appear wave-like deformation, which is manifested in the vicinity of the rear semicircle between the tire and the ground, commonly known as "standing wave". When the "standing wave" occurs, the rolling resistance of the tire rises sharply, and the tire absorbs the standing wave energy in a short time, resulting in a sharp rise in temperature. At this time, if you continue to drive at high speed, the tread rubber will fall off, resulting in a flat tire.
Tire pressure monitoring system can prevent tire puncture.
The United States has tested the tire pressure of all cars entering gas stations and compared it with the tire pressure recommended by automobile manufacturers. It is found that the tire pressure of at least one tire of about 40% cars is 20% lower than that recommended by the manufacturer, and the tire pressure of at least one tire of about 26% cars is 25% lower than that recommended by the manufacturer. For the first time in Beijing, the safety inspection of the tires of automobile consumers in China was carried out. The results showed that 9 1% of the tires under inspection had safety hazards. Among them, 60% tires have abnormal tire pressure, which easily leads to uneven crown wear: 37% tires have nails or stab wounds on the crown. Experts said that the car had a flat tire accident when driving at a speed of 160 km/h, and the death rate of the driver and passenger was 100%.
The test shows that 80% of the tires have signs of puncture, and the pressure and temperature in the tires will be abnormal one hour before the puncture occurs, which provides a basis for realizing the early warning of puncture. TPMS (Tire Pressure Monitoring System) monitors the pressure and temperature in tires, and gives an alarm for abnormal pressure and temperature, so that drivers can find them in time, thus ensuring driving safety and reducing tire wear and fuel consumption.
Improve safety, reduce fuel consumption and prolong tire life.
Compared with the standard air pressure, the air pressure will increase by 25% and the tire life will decrease by 25%. The air pressure is reduced by 25%, and the service life is reduced by about 30%. At the same time, maintaining the standard tire pressure has obvious effect on reducing fuel consumption. According to Goodyear's data, under the condition of insufficient inflation, the fuel consumption will increase by 1% for every drop in tire pressure. Excessive or insufficient tire pressure will reduce the service life of tires. The United States Highway Traffic Safety Administration requires that by 2007, all cars sold in the United States must be equipped with tire pressure monitoring systems. In 2008, the European Commission also announced that all new cars must be equipped with TPMS from 20 12. At present, China is also actively exploring in the field of TPMS, and it is the future trend to install tire pressure monitoring system on new cars.
Tire pressure monitoring system makes your driving safer.
Wireless tire pressure monitoring system (TPMS) can automatically monitor and give an alarm in real time for faults such as low tire pressure, high tire pressure, quick air leakage and high tire temperature, so as to maintain sufficient tire pressure, prevent the occurrence of tire puncture accidents, increase the driving safety of automobiles, reduce the excess engine oil caused by insufficient tire pressure and prolong the service life of tires. Existing automobile safety measures, such as ABS, ESP, airbags, etc. All of them are "passive afterwards", that is, they only play a role in protecting personal safety after the accident. TPMS belongs to the "active" type, that is, when the tire shows signs of danger, the driver can take immediate measures!
The first iPhone tire pressure monitoring can also be used at 350 kilometers per hour.
Tire puncture accidents on expressways often lead to serious consequences. Cars burning in snow trails and passengers overturning on national highways are all caused by flat tires.
Lu 'an Shunchang and Taiwan Province "Orange Electronics" jointly developed a digital monitor combined with iPhone, and cooperated with Apple Computer to open a Bluetooth channel, so that the mobile phone can also become a tire pressure monitor, and the tire pressure of the vehicle can be controlled through app software without purchasing led display models. After racing test, it can be effectively monitored even at 350 kilometers per hour.
Tire puncture has always been one of the main causes of road accidents, and 80% of the causes of tire puncture are related to "insufficient tire pressure". However, according to the statistics of NHTSA in the United States, only 5% of the average car owners will check the tire pressure every week, and the proportion of never checking before the abnormality is as high as 35%. Obviously, the safety of tires is often ignored by many drivers. Therefore, as early as 2005, the United States has legislated that all new cars must be equipped with TPMS, and the European Union will follow suit on 20 12 1 1, and other countries such as Korea, Japan and Chinese mainland are also preparing to legislate. As for Taiwan Province Province, after the snow tunnel fire accident, legislators began to propose that new cars should be equipped with TPMS to minimize the chance of puncture.
Prior to this, in order to let more people know more about the importance of tire pressure, Orange Electronics, a well-known wireless tire pressure monitoring system designer and manufacturer, decided to take the initiative to announce the cooperation with Nanrenhu enterprise operating the national highway service area to promote the concept of pre-puncture and related measures in the service area. In addition to graphic explanations, you can also participate in TPMS prize-winning activities to promote the tire safety plan through full consumption.
It is known to all drivers to check tires before going on the road, but few people actually do it, so installing TPMS has become a popular modified commodity in recent years. Take TPMS of Orange/TP-Checker as an example, tire pressure and tire temperature can be monitored at any time through the screen, and the driver will be actively reminded when it exceeds or falls below the set range to avoid possible tire puncture.
Therefore, in recent years, TPMS (Tire Pressure Monitoring System), which uses radio frequency wireless technology to monitor tire conditions in real time, has been paid more and more attention-even in countries all over the world, it has been compulsory or ready to be listed as the standard for all cars. OrangeElectronic, a company in Taiwan Province province, has been developing this product for some time, and recently launched a TPMS product-orange etpmsp418, which uses iPhone or ipad as the monitoring screen. It directly replaces the special monitoring display with the smart phone device that is very common in life, and also provides more monitoring functions of customized displays through the special App. Lu 'an Shunchang is the only authorized general agent of OrangeTPMS in Chinese mainland, Taiwan Province Orange Electronics Co., Ltd., which is responsible for the sales, maintenance and after-sales service of OrangeTPMS wireless tire pressure monitoring system in Chinese mainland.
This tire pressure monitoring system named TireVitals can transmit tire information data (such as tire pressure, tire temperature and horizontal voltage) obtained by sensors installed on four tires to the wireless transceiver in the car through radio frequency wireless technology, and then transmit the received tire pressure and temperature (attention) values to the iTPMS mobile application on iPhone via Bluetooth. In order to avoid the situation that iDevice may not display tire pressure warning immediately for some reasons, TireVitals' dedicated wireless transceiver also supports tire pressure warning function with warning sound and flashing light, providing double protection for driving safety. Want to know more about this tire pressure monitoring/detection system? Click to continue reading and watch the official product introduction and installation video.
Note: Because the tire will change hot and cold during driving, the value of standard tire pressure will also increase or decrease, so an accurate tire pressure monitoring system usually includes temperature sensing function.
Comparison between Orange products and competitors;
Direct tire pressure monitoring system;
The tire pressure is directly measured by the pressure sensor installed in each tire, and the pressure information inside the tire is sent to the system on the central receiving module by the wireless transmitter, and then the tire pressure data is displayed. When the tire pressure is too low or leaks, the system will automatically give an alarm.
Advantages:
The actual instantaneous pressure inside each tire can be measured at any time, so it is easy to determine the faulty tire, and the reaction period is within 6 seconds.
disadvantaged
1, high cost, need to install hardware equipment.
2. There are requirements for the stability and reliability of wireless signal transmission, the service life limit of the sensor, the accuracy of alarm prompt and the pressure resistance of the sensor, and the products on the market are mixed.
Indirect tire pressure monitoring system;
Through the wheel speed sensor of automobile ABS system, the speed difference between tires is compared to achieve the purpose of monitoring tire pressure. ABS judges whether the wheel is locked by the wheel speed sensor, and then decides whether to start the anti-lock braking system. When the tire pressure decreases, the weight of the vehicle will make the tire diameter smaller, which will lead to the change of vehicle speed, which can be used to trigger an alarm system to warn the driver.
Advantages:
For vehicles with ABS installed, it is only necessary to upgrade the software, and the cost is low.
Disadvantages:
1. The faulty tire cannot be determined and the value cannot be displayed.
2. System calibration is extremely complicated.
3. Monitoring fails when the vehicle speed is higher than100 km/h/h.
4. As long as both tires lose pressure at the same time, the device will fail.
5. When the vehicle is stationary, it cannot be monitored.
6, the reaction cycle should be more than 20 seconds.
(1) For other fakes, please note: the monitor cannot be clearly displayed day and night. There are also some fake TPMS batteries that are in danger of explosion at high temperature in the car, which causes drivers to pay attention to whether there is electricity when the battery is running out every day.
(2) Please pay attention to other fake TPMS: the sensor fails very quickly. Under normal circumstances, the warranty period of TPMS sensor can reach 7 years, but the valve gasket of this design may only have a life of one year, which cannot be updated, and it is equipped with an acceleration switch. Only when the vehicle speed exceeds 25 km/h (when the car starts, the tires are at rest) can the sensor be started. This design is another improved method for bad power management. When the car starts, the tire pressure/temperature information can't be known ... The sensor detection interval is too long, exceeding 6 seconds/time (the reaction speed is too slow), and when the tire deflates a lot, it will be known after 50 seconds (the reaction time is too long and dangerous).
(3) In particular, the sensor connected to the valve (external) is more dangerous, and it is impossible to correctly understand the internal situation of the tire, and even has no chance to be tested by the car factory. Because it can only detect the tire pressure and temperature inside the valve, it is called "adult toy" in the TireReview special report in the United States, and it may be destroyed by manpower and material resources at any time outside the valve.
(4) Please note that there is no national certification, false certification, and it has never passed the factory certification or performance. The development process completely exceeds the requirements of the factory, with strict planning and certification. It is only sold in the after-sales market, and there is no formal testing specification of the manufacturer. It failed all the tests and verifications required by the factory. The product has no verification data and cannot enter the international racing level.
Running with a flat tire is the bane of a flat tire. When the vehicle is running without air (the tire pressure is lower than the standard tire pressure), with the decrease of the tire pressure, the friction between the tire and the ground increases exponentially, the tire temperature rises sharply, the tire becomes soft and the strength drops sharply. In this case, if the vehicle runs at high speed, it may lead to a flat tire. If the vehicle runs at a low speed, it will also hurt the tires, and the incubation period is long, which is hidden and more harmful, laying a hidden danger of tire puncture when driving at a high speed in the future.
One of the reasons for a flat tire is a flat tire. When the tire is punctured by nails or other sharp objects, the tire will leak air, which will lead to a puncture. Second, the tire pressure is too high. Because the car runs at high speed, the tire temperature rises, the air pressure rises, the tire deforms, the elasticity of the carcass decreases, and the dynamic load on the car also increases. In case of impact, internal cracks or puncture will occur. This is also the reason why a puncture accident will occur in summer. Third, the tire pressure is insufficient. When the car is driving at a high speed (the speed exceeds 120km/h), the tire pressure is insufficient, which is easy to cause the "resonance" of the carcass and produce a huge resonance force. If the tire is not strong enough or has been "injured", it will explode. Moreover, insufficient air pressure makes the tire sink more, and it is easy to cause the tire wall to land when turning sharply, and the tire wall is the weakest part of the tire, and the tire wall landing will also lead to a puncture. Fourth, the tire "runs with disease". After a long period of use, the tire is seriously worn, the tire crown has no pattern (or the pattern is too low), and the tire wall is thin, which becomes what people often say as "bare tire" or "uneven weak link" and will burst because it can't stand the high pressure and high temperature of high-speed driving.
Cause analysis of frequent tire puncture accidents
First of all, overloading causes the tire to leak.
At present, overloading of road freight cars is quite common in China, and a considerable number of people engaged in individual transportation believe that freight cars are unprofitable without overloading. However, overload is one of the main reasons for the flat tire of freight cars.
At present, high-pressure tires are widely used in trucks produced and used in China, and double tires are generally used for rear wheels with large bearing capacity. Under normal circumstances, when the load on the wheel is the maximum allowable value, the internal pressure of the high-pressure tire is 5-7 atmospheres. When the actual load of the freight car exceeds the maximum allowable load of the wheel, the internal pressure of the tire will increase. When the internal pressure of the tire exceeds the sealing pressure of the tire valve, the tire will leak air. If one tire of the last two wheels with large bearing capacity leaks air and the driver fails to find it in time, the other tire of the last two wheels will be overloaded with flat tires. In addition, after the trucks use the brakes for a long time, the brake drum will gradually generate high temperature. Because the tire valve of freight car is close to the middle position inside the tire rim and the brake drum, the high temperature generated by the brake drum will make the rubber at the bottom of the valve expand and deteriorate, and the sealing performance will deteriorate. Trucks that often drive in mountainous and hilly areas need to use the brakes for a long time, so the sealing performance of tire valves is generally poor, so the probability of tire puncture is high.
Second, speeding leads to a flat tire.
Small passenger cars, especially high-class cars with good performance, have a flat tire due to speeding. On the expressway, the speed of some advanced cars with good performance is above 1 10 km, and the speed of advanced cars with similar performance is higher when overtaking each other on the expressway.
For low-pressure tires commonly used in modern automobiles, when the load on the wheel is the maximum allowable value, the internal pressure of the tire is between 1.5- 1.4 atmospheric pressure. Under the condition of high-speed driving for a long time, the intense friction between the tire and the ground will produce a lot of heat, and the accumulation of heat to a certain extent will lead to the high temperature of the tire. High temperature has two adverse effects on tires. First, the tire itself expands and its compression resistance becomes worse. The second is to expand the gas in the tire, which leads to the increase of the internal pressure of the tire. In addition, when the automobile tire runs at high speed for a long time, the contact surface between the tire and the ground remains relatively stable for a long time, and the tire strain surface is difficult to adjust. After maintaining this state for a long time, the internal pressure of the tire will often exceed the load strength of the tire strain surface and puncture the tire.
Third, the tire pressure does not meet the safety requirements, resulting in a flat tire.
In highway transportation, there are two main situations in which the tire pressure does not meet the safety requirements. One is that the truck tire pressure is too high, and the other is that the small tire pressure is too low. Both of these situations may lead to a flat tire in a moving car.
As far as the 900-20 tires commonly used in trucks are concerned, when the load on the tires is the maximum allowable value, the internal pressure of the tires is generally required to be seven atmospheres, and truck drivers generally inflate the tire pressure to more than 10 atmospheres in order to load more tires. This situation makes the tire overloaded for a long time, just like a balloon filled with too much gas, which can easily lead to a flat tire due to overload, road bumps and other factors.
As far as the low-pressure tires commonly used in modern automobiles are concerned, when the load borne by the tires is the maximum allowable value, the internal pressure of the tires is generally required to be 2.5 atmospheres, but many automobile drivers have a wrong understanding that it is best to adjust the tire pressure lower when driving on the expressway, so that the tires will not explode. Based on this understanding, some car drivers will release part of the air in the tires before entering the expressway, so as to deflate the tires. In fact, too low tire pressure can easily lead to a puncture. When the tire pressure is too low, the contact surface between the tire and the ground will become larger, and the friction resistance will also become larger when driving. When the car is driving at high speed, the tire will heat up rapidly, which makes it easier to heat up the tire. As mentioned above, the tire itself will expand and its compression resistance will become worse. At the same time, when the car is driving at high speed, the front and rear ends of the contact surface between the tire and the ground will bend and straighten repeatedly at high frequency. For tires with low air pressure, the amplitude of this movement is much larger than that under normal air pressure. This situation is similar to the movement of bending a wire and then straightening it quickly. As a result, the line is bent and straightened repeatedly, and the line will soon be fatigued and broken. Tires with low air pressure will soon tire out after driving at high speed for a period of time. In addition, low tire pressure will also cause relative displacement between the outer tire and the inner tire of high-speed tire, which will have a certain wear effect on the inner tire.
Four, the tire has internal injuries or air bubbles in the tire ply, resulting in a flat tire.
Both of these cases belong to the quality problem of the tire itself. Tire internal injury means that the inner tube of the tire is repaired due to sharp tool perforation or air leakage of the valve. The sealability and load-bearing capacity of repaired tires are far less than those of unpatched tires. Generally, the inner tube of tire repair is padded with rubber gasket, which is used to repair the puncture of the outer tire and prevent the tire from "bubbling" at the puncture of the outer tire and then puncture. However, this kind of gasket protruding from the inner surface of the outer tire has a wear effect on the repair of the inner tube under load, and it is easy to puncture the tire if it is often overloaded or bumped on the road. Bubbles in tire plies are formed during tire production. For the tire with air bubbles in the ply, under the load, the air bubbles in the ply will move due to the load. With the movement of the air bubbles, the space occupied by the air bubbles in the ply will gradually increase, which will eventually lead to the perforation of the tire ply, and then the inner tube will "bubble" from the perforation of the ply, which will make the tire burst.
Five, tire surface wear or oil corrosion caused by puncture.
At present, many vehicles driving on domestic roads have the problem of excessive tire surface wear. Some cars' tire patterns have been smoothed out. The bearing capacity and compressive strength of this kind of tire are far lower than those of ordinary tires, so it is difficult to maintain the normal running of the car. In addition, high temperature, speeding, road bumps and other factors are easy to puncture.
Automobile tires are also prone to puncture due to oil corrosion. This is because automobile tires are made of rubber, and their chemical components are organic substances, which are easily dissolved in organic solvents such as gasoline and engine oil to be corroded and then cracked. Such tires can't withstand normal air pressure and have no normal load capacity, and it is very easy to puncture when driving on the road.
In addition to the above reasons, high temperature and uneven road surface are also factors that cannot be ignored. High temperature in summer is the frequent period of tire puncture accidents, and the road sections with collapsed roads and potholes with serious road damage are also the frequent road sections with tire puncture accidents.
How to prevent vehicle tire puncture 1 Tubeless tire and radial tire carcass are preferred for radial tires, and the belt layer is made of fabric or steel cord with high strength and small tensile deformation, so this kind of tire has strong impact resistance, small rolling resistance and low energy consumption, and is most suitable for driving on expressways. The tubeless tire has small mass, good air tightness and small rolling resistance. In the case of a flat tire, the tire pressure will not drop sharply and you can continue driving. Because this kind of tire can radiate heat directly through the rim, it has low working temperature, slow aging speed of tire rubber and long service life. 2. Use low-pressure tires as much as possible. At present, almost all cars and trucks use low-pressure tires; Due to the good elasticity, wide cross section, large contact surface with the road surface, thin wall and good heat dissipation, the low-pressure tire improves the riding comfort and steering stability of the automobile, greatly prolongs the life of the tire and prevents the occurrence of tire puncture. 3. Pay attention to the speed level and endurance. Due to different rubber and structure, each tire has different speed and bearing limits. When selecting tires, drivers should clearly see the speed grade marks and bearing capacity marks on tires, and choose tires higher than the maximum driving speed and bearing capacity of vehicles to ensure driving safety. 4. Keep the standard air pressure of the tire. The life of tires is closely related to air pressure. If the driver finds that the tire is overheated due to high air pressure, it is absolutely forbidden to deflate and pour cold water on the tire to cool it down, which will speed up the aging of the tire. In this case, you can only stop, cool down naturally and step down. If the tire pressure is too low, the driver should inflate it in time and slowly check whether the tire leaks, so as to replace the tire with good air tightness.
Pre-puncture technology The occurrence of tire puncture is largely related to the tire pressure of automobile tires. Therefore, a safety technology based on pre-puncture "time Real-time Monitoring Tire Pressure" is very popular in the market. "TPMS" is "tirepsuremoni-toring sys? The abbreviation of "tem" is "Automobile Tire Pressure Monitoring System". The system can be divided into direct TPMS and indirect TPMS. The so-called direct TPMS system refers to directly installing sensors on four wheel assemblies, detecting tire temperature and tire pressure every 60 seconds, and giving a real-time warning to remind drivers to take measures, which can largely prevent tire puncture accidents caused by abnormal air pressure. Indirect TPMS system compares the speed difference between tires through the wheel speed sensor of automobile ABS system, so as to achieve the purpose of monitoring tire pressure. ABS judges whether the wheel is locked by the wheel speed sensor, and then decides whether to start the anti-lock braking system. When the tire pressure decreases, the weight of the vehicle will make the tire diameter smaller, which will lead to the change of vehicle speed, which can be used to trigger an alarm system to warn the driver. Comparing "direct" and "indirect" TPMS systems, each has its own advantages and disadvantages. Direct TPMS can measure the actual instantaneous pressure inside each tire at any time, and it is easy to determine the faulty tire. Compared with direct TPMS, the cost of indirect TPMS is relatively low, and cars equipped with four-wheel ABS only need to upgrade their software. However, compared with direct TPMS, indirect TPMS also has many limitations. Because the indirect system mainly determines whether the tire pressure is normal by measuring the tire speed, the indirect system cannot play a role when the vehicle stops. Another example is indirect TPMS, which mainly relies on comparing four tires to detect anomalies. However, if the tire pressures of the four tires are at a low level at the same time, the indirect TPMS will not work. In addition, when the working environment of tires changes, such as replacing new tires, the indirect system must be reset.
The external tire pressure TPMS is very dangerous. If the valve needle is blocked for a long time and the tire is not in dynamic balance, it will leak air for a long time, while if the tire runs in an unbalanced state for a long time, the tire will wear out and the fuel consumption will be high, which is harmful to the car. It's useless, but it's dangerous to use. It is forbidden to use external tire pressure warehouse.
Truly safe and effective TPMS: safety savior-rescue; Tire leaks; Air pressure is unstable; The temperature is too high; Fuel consumption nemesis-province: the United States can save 400 million liters of fuel; Europe can save 700 million liters, and China can save 2 billion liters of fuel.
Safety requirements for genuine TPMS: 1. Designated for international racing competition (professional racing level); 2. Passed the durability test of car factories all over the world (car factory specification); 3. Have national communication certification; 4. There are national environmental protection signs; 5. First place in 5.TPMS global competition for automotive electronic parts; 6. Mass production of bus (long-distance) wireless tire pressure monitoring system; 7. 100% automatic detection equipment and 100% monitoring equipment; 8. The Apple software of the American Apple Computer has been certified and downloaded and used on the Apple website; 9. The world media rushed to report; 10. This product has patent certification.
Installing wireless tire pressure monitoring can bring huge economy: 1, preventing accidents: driving safety is the most important, and tire pressure monitoring system is an active safety device, which can give an alarm in time when tires show signs of danger, reminding drivers to take corresponding measures, thus avoiding serious accidents; 2, the service life of the tire is prolonged; Driving under non-standard air pressure will shorten the service life of tires. The experiment shows that the wheel pressure will decrease 10% and the tire life will decrease 15%. 3. Reduce fuel consumption; If the tire pressure is 30% lower than the standard pressure, the fuel consumption will increase by 10%. The tire pressure is too high, the grip decreases and the fuel consumption increases; 4. Avoid grinding vehicle parts.
Other competitors and fake TPMS decryption
(1) Please pay attention to other competitors and counterfeits: the monitor cannot be clearly displayed day and night. There are also some fake TPMS batteries that are in danger of explosion at high temperature in the car, which causes drivers to pay attention to whether there is electricity when the battery is running out every day.
(2) Please pay attention to other competitors and counterfeit TPMS: the integrated sensor fails very quickly. Under normal circumstances, the warranty period of TPMS sensor can reach 7 years, but the gas valve gasket of this design may only have a life of one year, which cannot be updated, and it is equipped with an acceleration switch, and the sensor is only started when the vehicle speed exceeds 25 km/h (when the car is started, the tire is at rest). This design is another improved method for bad power management. When the car starts, the tire pressure/temperature information can't be known ... The sensor detection interval is too long, exceeding 6 seconds/time (the reaction speed is too slow), and when the tire deflates a lot, it will be known after 50 seconds (the reaction time is too long and dangerous). In particular, the sensor outside the valve is more dangerous, and it is impossible to correctly understand the situation inside the tire, and there is no chance to be detected by the car factory. Sensors outside the valve may be destroyed by human and material resources at any time.
Please pay attention to other competitors and counterfeit TPMS: there is no national certification and counterfeit certification, and it has never passed the certification or performance of the car factory. The development process is completely divorced from the requirements of the car factory, and the process and rigorous planning certification are only sold in the after-sales market. There is no formal test specification in the car factory. It failed all the tests and verifications required by the automobile factory. The product has no verification data and cannot enter the international racing level.
Indirect type
Based on wheel speed TPMS (WSB for short), the system compares the speed difference between tires through the wheel speed sensor of automobile ABS system, so as to achieve the purpose of monitoring tire pressure. ABS judges whether the wheel is locked by the wheel speed sensor, and then decides whether to start the anti-lock braking system. When the tire pressure decreases, the weight of the vehicle will make the tire diameter smaller, which will lead to the change of vehicle speed, which can be used to trigger an alarm system to warn the driver. It belongs to the passive type afterwards.
Direct type
TPMS based on pressure sensor (PSB for short) is a system that directly measures the tire pressure by using the pressure sensor installed in each tire, and sends the pressure information inside the tire to the central receiving module by using the wireless transmitter, and then displays the tire pressure data. When the tire pressure is too low or leaks, the system will automatically give an alarm. It belongs to proactive defense beforehand, such as OrangeTPMS.