System for monitoring and controlling the tire pressure of a vehicle
The on-board system dynamically adjusts tire pressure based on vehicle data to address the unreliability of existing systems, improving efficiency and safety by maintaining optimal tire pressure.
Patent Information
- Application Number
- DE202024106158
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2024-10-26
- Publication Date
- 2024-12-19
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Existing tire pressure monitoring systems are unreliable and unable to automatically adjust tire pressure to optimal levels, leading to increased fuel consumption, wear, and safety risks due to uneven tire wear and pressure fluctuations.
An on-board system that uses sensors and a central control unit to measure and adjust tire pressure dynamically based on vehicle data, including temperature, load, and road conditions, with a pressure vessel and manifold to inflate or deflate tires as needed.
Ensures reliable tire pressure regulation, minimizing wear, reducing fuel consumption, and enhancing safety by maintaining optimal tire pressure during vehicle operation.
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Abstract
Description
TECHNICAL FIELD
[0001] The invention relates to a system and device for monitoring and regulating the air pressure in pneumatic tires for vehicles. More specifically, the invention relates to a system for determining the optimal tire pressure and automatically checking tire pressure and leaks, as well as for controlled inflation and deflation of tires to obtain and maintain the correct pressure. BACKGROUND
[0002] For optimal tire function on vehicles with pneumatic tires, i.e., roadholding, rolling resistance, braking, and acceleration, optimal tire pressure is required. Tires, in particular, are the point of contact with the road, and their function and service life are influenced by various conditions such as ambient temperature, road temperature, road surface conditions, vehicle load, terrain, and vehicle speed. Tire quality, such as wear resistance and age, also plays a major role. Finally, it is always possible that a sharp object is present on the road surface, which could damage the tire, cause it to lose air, or even burst.
[0003] Tire pressure that is too low leads to higher rolling resistance, which, among other things, leads to higher fuel consumption and increased tire wear, which also creates more particulate matter that gets into the ambient air and the ground.
[0004] Higher fuel consumption leads to more CO2 and NOx emissions.
[0005] Increased wear shortens tire life, but also results in poor roadholding and handling, a more difficult vehicle to drive, less grip on the road, and therefore longer braking distances and a higher risk of skidding. Incorrect tire pressure also leads to irregular, uneven tire wear, which contributes to the negative consequences mentioned above and also negatively impacts driving comfort. One form of uneven wear is cupping. Cupping can significantly increase tire noise and cause the steering wheel to vibrate. Over-inflation has similar consequences to under-inflation, including poor roadholding, increased and uneven wear, longer braking distances, and a greater risk of skidding.Too much or too little tire pressure and the resulting increased wear can ultimately lead to tire failure with all its consequences. It is easy to imagine that the negative effects of incorrect tire pressure mentioned above can have even more serious consequences for a truck, where skidding can cause significant damage to the road, the vehicle and other vehicles, as well as to the driver and other road users. Tire fragments flying off the road due to a flat tire pose a real danger to other traffic. In any case, a flat tire can have catastrophic consequences for the vehicle and / or other traffic. The economic damage caused by a flat tire is usually quite significant due to downtime and breakdown assistance, while the social damage caused by traffic jams, dangerous situations, and accidents is also not insignificant.After all, an accident involving a truck or a stationary truck that breaks down along a road often leads to exponentially higher traffic disruption and economic damage for society and the transport company. The ambient temperature is (partly) responsible for the temperature of the air in the tires, which means that tire pressure can vary, with cold tire temperatures leading to lower tire pressure and warmer temperatures leading to higher tire pressure. Sustained higher speeds, as well as acceleration and deceleration, also lead to temperature fluctuations. It is also important to note that the correct tire pressure also depends on the weight of the vehicle. A fully loaded truck, for example, requires higher tire pressure than an empty one. A visual inspection before driving is helpful to prevent a vehicle from being driven with underinflated tires and / or leaks.However, this check is significantly more difficult, if not impossible, while driving. Especially with trucks with multiple rear wheels and / or trailers, a visual inspection is difficult even when stationary, while the driver is usually completely unaware that, for example, one of the eight tires is already mounted. A dangerously low voltage level is present. Contact, whether through the eyes, hearing, sight, hearing, or feeling vibrations, is even more difficult, if not impossible, with a trailer.
[0006] One claimed improvement according to the state of the art concerns the measurement of the current tire pressure, for example, through the use of tire pressure monitor caps (TPMCs). These can be visually read on-site in the TPMC. It is then up to the driver / inspector to determine whether the measured tire pressure is the correct tire pressure. In practice, however, the measurements are often unreliable due to the high error rate.
[0007] However, it is not possible to regulate the tire pressure immediately by filling the tires with air if the tire pressure is too low or by partially deflating the tires if the tire pressure is too high.
[0008] Recognizing this problem has led to the introduction of on-board devices for monitoring tire pressure while driving, known as "Tire Pressure Monitoring Systems" (TPMS). A further development has been the development of systems that use a pumping system to inflate tires that appear under-inflated during system testing, even while driving. These systems must also be able to reduce tire pressure to prevent excessive tire pressure from leading to excessive wear or bursting.
[0009] The ability to selectively increase or decrease tire pressure for each tire is desirable in the context of optimizing vehicle operation. It is also desirable to be able to measure and adjust the tire pressure in each tire separately so that a problem such as a flat tire in one tire does not affect the air pressure in the others. Today, on-board systems are known that serve to inflate and deflate vehicle tires in a controlled manner while driving. Such systems typically include a pressure vessel containing a supply of air. Furthermore, a piping system and a control system are provided for selectively increasing or decreasing the tire pressure of the tires connected to the system.
[0010] Typically, the system has a separate air line running from the pressure vessel to each connected tire. Such an air line generally runs through the fixed axle on which the tire and associated wheel assembly are rotatably mounted. The connection to the pneumatic tire is airtight.
[0011] The following discusses a publication that may be relevant to the technical field.
[0012] Chander Mittal's patent US 5,540,268 A (United States of America) can be summarized as a device for adjusting and regulating air pressure in vehicle tires. The microcomputer-based device automatically monitors tire pressure, checks for tire and system leaks, and inflates and deflates the tires in a controlled manner depending on the conditions. The device also includes tire inflation valves designed to prevent system contamination. DISCLOSURE OF THE INVENTION
[0013] The object of the present invention is to provide an on-board monitoring and control system and device that ensures reliable measurement and control of the tire pressure of one or more tires of a vehicle. More specifically, the invention aims to perform the control and adjustment while driving.
[0014] Furthermore, the invention aims to provide a system that enables tires to be used optimally throughout their entire service life, thus minimizing the waste of raw materials.
[0015] This object is achieved by the following aspect and the various embodiments.
[0016] In one aspect of the invention, a system for use on board a vehicle is presented, the system being adapted to adjust the tire pressure of one or more tires, in particular pneumatic tires of the vehicle, while the vehicle is traveling, the system comprising: - a control system for determining the tyre pressure of one or more tyres; - a pressure vessel for storing air under pressure; - a distributor connected to the pressure vessel, designed to supply or remove air from the pressure vessel and equipped with one or more adjustable valves; - a pipe system for supplying air from the pressure vessel to one or more tires and vice versa; - a control unit connected to the distributor, which is designed to control the one or more valves, in particular to open or close them, in order to adjust the tyre pressure of the one or more (pneumatic) tyres, wherein: - the control system comprises a measuring system configured to measure a tire pressure of the one or more tires; - the vehicle comprises, in addition to the measuring system, one or more sensor systems designed to collect vehicle data relating to the tyre pressure of one or more of the tyres and to transmit them to the control system; - the control system is configured to receive the vehicle data and use it as input for calculating the optimal tire pressure for the vehicle's tires.
[0017] In one embodiment of the invention, a sensor system of the one or more sensor systems is presented, wherein a system from the following group comprises: - a temperature sensor system for measuring the temperature around the vehicle, inside the vehicle, around one or more tires and / or in one or more tires; - a load-dependent brake pressure control for measuring a total load and / or load distribution on one or more tires; - an automatic air suspension system for measuring the total load and / or load distribution on one or more tires.
[0018] In a further embodiment of the invention, a system is presented, wherein the vehicle data comprises data from the following group: - temperature measured by the temperature sensor system; - Total load or load distribution on one or more tires measured by the load-dependent brake pressure control; - Total load and / or load distribution on one or more tires, measured by an automatic air suspension system.
[0019] In a further embodiment of the invention, a system is presented, wherein the control system determines, based on the current tire pressure of one or more of the tires, whether and to what extent the tire pressure of the tire needs to be adjusted, wherein the control system serves to adjust the control unit so that the tire pressure corresponds as closely as possible to the determined optimal tire pressure.
[0020] In a further embodiment of the invention, a system is presented wherein the one or more bands are connected to a separate line leading to the measuring system.
[0021] In a further embodiment of the invention, a system is presented, wherein the measuring system is equipped with a central sensor system.
[0022] In a further embodiment of the invention, a system is presented, wherein the system comprises a warning system configured to generate warnings when the control system detects a deviation of the measured tire pressure compared to the optimal tire pressure of a tire of one or more tires, and wherein the warning system is configured such that a driver of the vehicle can heed the warnings.
[0023] In a further embodiment of the invention, a system is presented wherein the deviation is classified into different degrees with an associated warning system.
[0024] In a further embodiment of the invention, a system is presented, wherein the warning system comprises different escalation levels depending on factors, for example factors from the group consisting of: - measured frequency of detection of a deviation each time after an adjustment has taken place; - an absolute and / or relative deviation exceeding a maximum value; - an absolute and / or relative growth of the deviations after each adjustment.
[0025] In a further embodiment of the invention, a system is presented, wherein the escalation levels in ascending escalation include the following actions: - a visual indication of the activation of the operating system; - a visual indication of a frequency and / or deviation that still allows safe driving but requires attention at the next service point; - an audiovisual indication of a frequency or deviation indicating a leak or other damage to one or more tires requiring an immediate stop.
[0026] In a further embodiment of the invention, a system is presented, wherein a sensor system of the one or more sensor systems is configured to analyze the condition of the surface under one or more wheels of the vehicle on which the vehicle is moving, wherein the system optionally adjusts the tire pressure of the one or more tires according to the analyzed surface, wherein, for example, a soft, loose and / or sloping surface leads to a setting to a lower tire pressure of the tires, and a harder and / or smoother surface, on the other hand, leads to an adjustment to a normal or higher tire pressure.
[0027] Automatic subsoil detection for agriculture in particular aims to minimize soil compaction and structural changes.
[0028] In a further embodiment of the invention, a system is presented, wherein the sensor system comprises a video camera with an image recognition system.
[0029] In a further embodiment of the invention, a system is presented, wherein a sensor system of the one or more sensor systems is configured to measure the traction of the vehicle, wherein the system adjusts the tire pressure of the tires of the one or more wheels of the vehicle based on the measured traction of one or more wheels, wherein reduced traction of one or more wheels results in an adjustment to a lower tire pressure of the tires and normal traction results in an adjustment to a normal tire pressure.
[0030] In a further embodiment of the invention, a system is presented, wherein the sensor system comprises or makes use of an anti-lock braking system, ABS, an electronic stability program, ESP, an electronic braking system, EBS, an anti-skid control, ASR and / or another traction control system of the vehicle.
[0031] The invention can be summarized as a system for use on board a vehicle, wherein the system is configured to adjust the tire pressure of one or more (pneumatic) tires of the vehicle while the vehicle is moving. To achieve this, a control system for measuring and regulating the tire pressure of the tires is provided. Air is used to inflate the tires when the tire pressure is too low and to deflate them when the tire pressure is too high. Air is supplied to the tires from a pressure vessel and vice versa when the tire pressure needs to be reduced. For this purpose, the pressure vessel contains pressurized air.
[0032] To regulate the air supply and return to and from the pressure vessel, a manifold with various air ducts connected to the tires is provided. The manifold is equipped with valves that can be operated by a control unit connected to the control system. The control system has a measuring system designed to measure or calculate the tire pressure by deriving it from other parameters.
[0033] For this purpose, the vehicle preferably has sensor systems configured to record tire pressure-related vehicle data and transmit it to the control system. The control system can use this data as input to calculate the optimal tire pressure for the vehicle's tires.
[0034] The system according to the invention utilizes sensors and measurement data already present in the vehicle, wherever possible. This data is converted into parameters that can be used as input 1 for the measurement system.
[0035] For example, there are systems that can measure how effective a braking system is and use this to determine how much a truck weighs compared to an empty load. Although the measurement won't be very accurate, it's sufficient to calculate a range of optimal tire pressure.
[0036] According to the present invention, the inflation or deflation of the pressure per individual tire is carried out based on the measured brake pressure and optionally measured or derived current tire pressure in the tire, which is measured in another way, for example with TPMS.
[0037] The braking pressure is preferably derived from the pressure in an air spring bellows designed to provide the braking pressure. The system according to the invention determines the optimal tire pressure via the air spring system or the automatic load-dependent brake pressure control (ALR) of a truck trailer.
[0038] The system according to the invention provides air lines, which are preferably connected to each individual tire. These pipes are connected to the tires via swivel joints so that the tire (wheel) can rotate without the pipe rotating. The pipes to the tires are connected to a pressure vessel. A powerful air compressor, hereinafter referred to as a booster, is connected to the pressure vessel. From the pressure vessel to tires with underinflated tires, as long as the air in the pressure vessel is sufficiently compressed, the booster does not need to add much compression to inflate the tires. Conversely, a tire pressure measured that is too high can cause the system to be activated in reverse, with air being released from the affected tire and returned to the pressure vessel. The booster ensures that sufficient pressure is provided to fill the pressure vessel.The control of the air supply and discharge to and from the tires is carried out by a central control unit, which is part of the system and in which the pressure of each tire can be directly measured.
[0039] The tire pressure is preferably connected to the central control unit via air lines. The central tire pressure measurement is preferably carried out using a centerfold with a sensor.
[0040] Since overinflated tires supply air from the tire to the pressure vessel, and pressurized air from the pressure vessel is supplied to underinflated tires, this is essentially a closed system. If the pressure vessel falls below a certain level due to a leak, the trailer's air pressure can be used to supply ambient air to the pressure vessel via an inlet valve in the booster.
[0041] A visual interface, possibly with an audio output, is preferably connected to the central monitoring system.
[0042] For example, the current tire pressure per tire, the weight of the vehicle with the corresponding optimal tire pressure, and the tire pressure per tire with a visual position determination can be displayed on an interface screen. With visual position determination, a (schematic) representation of the arrangement of tires relative to the vehicle can be shown. In addition, an escalation system can be implemented, whereby a currently measured optimal tire pressure, for example, leads to a "System OK" message, e.g., with a green color display, while a slight deviation in the tire pressure leads to a "System OK" message. "System requires attention" message, e.g., with a yellow color display, while an acutely dangerous deviation in the tire pressure of one or more tires can lead to a "System Alarm" message and, if necessary, a flashing red light display.Various variations are possible. Also possible: Each deviation is accompanied by an acoustic alarm signal, ranging from gentle and friendly to loud and alarming.
[0043] At the highest danger alarm level, the engine management system can even be intervened in and the speed of the vehicle can be limited or even put into the so-called emergency running or crawling mode, in which the vehicle can only drive very slowly.
[0044] The system according to the invention is ideal for checking and adjusting tire pressure before a trip. For example, tire pressure can be adjusted to changing weather and temperature conditions or vehicle load.
[0045] In addition, the system proves its value in increasing safety while driving and preventing accidents and breakdowns, as described in the introduction.
[0046] An important message from the system may therefore be to report a leak in one or more tires. If, after inflating an under-inflated tire to the optimal pressure within a certain period of time, it turns out that the tire pressure is again too low, the system's software algorithm may conclude that the tire in question is leaking. In principle, the system ensures that the respective tire is always re-inflated, but an urgent warning that a stop and repair or replacement of the affected tire is necessary will be shown on the special display, e.g. via an app, such as a smartphone or via the vehicle's on-board computer.
[0047] If the system fails to inflate the tire despite maximum air flow, it may conclude that a leak is excessive and requires immediate attention or a stop. Following a loss of tire pressure in one or more tires, the system may recalculate to determine the optimal tire pressure based on the vehicle's weight with the fewer available load-bearing tires, resulting in all non-problem tires having a slightly higher tire pressure while you wait for the next service or roadside assistance.
[0048] The same system can be used to detect possible braking or bearing problems on vehicle axles and trailer axles by measuring the difference between repeated pressure increases per tire compared to the other tires on the vehicle or trailer. Since temperature plays an important role in maintaining optimal tire pressure, different temperature values are measured. On the one hand, a vehicle coming from a cold environment to a warm environment will have higher tire pressure and vice versa. A drop in tire pressure due to a drop in temperature (not only regional but often also time of day or whether the vehicle is being driven or not), with the rolling resistance of the tires leading to an increase in temperature and therefore an increase in tire pressure.
[0049] Preferably, the pumping and draining system of the central control unit operates with multiple valves. A supply valve is opened in the central control unit to direct air into all pipes. A supply valve is also opened in the line leading to a tire that needs to be inflated.
[0050] Another option offered by the system is to simultaneously open a valve on the left tire of the axle and a valve in a line to the right tire on each axle of the vehicle. Any pressure difference measured between the two open valves indicates a difference in tire pressure between the left and right tires. The valve measuring the relatively lowest pressure indicates a reduced tire pressure of the tire connected to the relevant pipe. The open valves on the same axle prevent air from escaping from one tire on the axle to the other tire on the same axle.
[0051] If a pressure difference is measured, the valve to the tire with the correct tire pressure and a so-called booster are activated, which supplies air to the tire with too low tire pressure via a pressure reducing valve.
[0052] If a tire pressure higher than optimal is measured, release valves are opened to release air from the tires. This air is then pumped through the booster to the pressure vessel, where it is stored under pressure.
[0053] The present invention is suitable for various applications such as trucks, port machinery and other vehicles that run on pneumatic tires such as semi-trailers and trailers, passenger cars, but also in industrial environments such as mobile port cranes.
[0054] The present invention is suitable for various applications such as trucks, harbor machinery and other vehicles running on pneumatic tires such as semi-trailers and trailers, passenger cars, but also in industrial environments such as mobile harbor cranes and lifting machines as well as tractors and other agricultural machinery. SHORT DESCRIPTION OF THE DRAWING FIGURES
[0055] The attached figures show embodiments according to the present invention. Fig. 1 shows a schematic representation of a view of a motor vehicle from below with an installed tire pressure control system. Fig. Figure 2 shows a schematic view of a motor vehicle from below with an installed tire pressure control system with additional components. DETAILED DESCRIPTION
[0056] The invention is described below with reference to the figures and references used.
[0057] For ease of reading, here is a list of the reference numbers used in the drawings and a brief description of the parts. 100 Tire pressure monitoring and control system 101 Control unit 102 Tire pressure monitoring unit 103 Pressure vessels for air 104 Communication lines between control unit 101 and tire pressure monitoring unit 102 105 Air lines between pressure tank 103 and tire pressure monitoring device 102 106 Brake force regulator 107 Communication line between brake force regulator 106 and tire pressure monitoring unit 102 108 Air suspension control unit 109 Communication line between air suspension control unit 108 and tire pressure monitoring unit 102 110a-f Air lines between tire pressure monitoring unit 102 and tires 210a-f 120a Line between brake force regulator 106 and wheel 220c of tire 210c 130a Line between air suspension control unit 107 and wheel 220c of tire 210c 200 cars or trucks 201 cabin 202 engine 203 Gearbox / Transmission 204 drive shaft 205 gearbox / differential front and rear axle 206 Gearbox / Differential Rear Axle 207a, b Support of the chassis part of the motor vehicle 200 208 Rear bumper of the motor vehicle 200 210a-f tires
[0058] Fig. 1 shows a schematic bottom view of a motor vehicle 200, wherein the dashed lines indicate the contours and various standard structural components of the motor vehicle 200. The vehicle shown in the drawing is an example of a three-axle truck, more specifically a panel van. Other vehicles and embodiments are also conceivable and suitable for the application of the invention 100. The vehicle 200 comprises, among other things, a cabin 201, a chassis consisting of a support 207a, b, and a rear bumper 208. An engine 202 is provided under the cabin with a motor (with transmission) 203 coupled thereto. The motor 202 drives the front wheels 210a and 210b. In the example, the rear wheels are also driven. The transmission 203 transmits the engine drive via the drive shaft 204 to a gearbox or differential 205 to wheels with tires 210c and 210f and optionally via gearbox or differential 206 to wheels with tires 210d and 210e.
[0059] The system according to the invention serves to monitor the tire pressure of at least one, but preferably all, of the vehicle's tires. For this purpose, a tire pressure monitoring and control system 101 is provided, which is configured to communicate data back and forth with the tire pressure control unit 102 via communication lines 104. The tire pressure control unit is connected to the tires 210a-f via air lines 110a. A pressure difference can be measured via the air lines, as described above, and the tire pressure can be adjusted to the correct pressure.
[0060] The pressure vessel 103 supplies the required air for the tire pressure monitoring unit 102 via air lines 105.
[0061] Fig. 2 shows the vehicle from Fig. 1, the air lines 110a-f are present, but omitted from the figure in order not to impair the readability of the figure.
[0062] In this embodiment, optional measurement data from other parts of a vehicle, such as a truck, is used to measure the tire pressure of tires 210a-f and adjust it to the correct pressure. Preferably, systems already installed in and on the vehicle are used, such as an electronic control unit (ECU) that controls many of a vehicle's electrical components and collects data from these components. Schematically, the parts shown are shown as being directly connected to the tire pressure monitoring device, but in practice, this may also mean that the data flows via the control unit.
[0063] The figure shows a brake force regulator 106. This is connected to the braking components of the vehicle's wheels via lines such as 120a to brake the wheels as needed. The figure shows only one example, for wheel 220c. The brake force regulator 106 is connected to the tire pressure control unit 102 via the communication line 107 (possibly via the ECU, as mentioned). The data from the brake force regulator is processed as explained above and used to determine whether the tire pressure of tires 210a-f is correct or should be adjusted.
[0064] Also shown in the figure is an air suspension control unit 108. This is connected to the spring components of the vehicle wheels via lines such as 130a. The figure shows only one example of wheel 220c. The air suspension control unit 108 is connected to the tire pressure control unit 102 via communication line 109 (possibly via the ECU, as mentioned). The data from the air suspension control unit 108 is processed as described above and used to determine whether the tire pressure of the tires 210a-f is correct or needs to be adjusted.
[0065] Since the system according to the invention can operate with various input data from different vehicle components involved in the drive, the system optionally uses artificial intelligence (AI) and / or self-learning systems to analyze the data, draw conclusions, and initiate appropriate actions through the tire pressure monitoring unit to adjust the vehicle's tires to the optimal pressure under all conditions, preferably both while driving and while stationary. This AI system can consist of neural network software, but fuzzy logic can also be used, since inaccuracies, uncertainties, and conflicting measurement data could potentially arise under difficult working conditions, irregular roads, alternating wet and dry roads, and rapid temperature and humidity fluctuations to which trucks, for example, are frequently exposed.
[0066] It should be noted that the above embodiments illustrate rather than limit the invention, and that one skilled in the art can devise many alternative embodiments without departing from the scope of the appended claims. Reference numerals placed in parentheses in the claims are not to be construed as limiting the claim. The use of the verb "comprise" and its conjugations does not exclude the presence of elements or steps other than those recited in a claim. The term "and / or" includes all combinations of one or more of the associated listed elements. The article "a" or "an" before an element does not exclude the presence of multiple such elements. The article "the" before an element does not exclude the presence of multiple such elements. In the device claim enumerating multiple means, multiple such means may be embodied by one and the same hardware element.The mere fact that certain measures are listed in different dependent claims does not mean that a combination of those measures cannot be used to advantage. QUOTES CONTAINED IN THE DESCRIPTION
[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature
[0000] US 5,540,268 A
[0012]
Claims
[1] A system for use on board a vehicle, the system being designed to adjust the tyre pressure of one or more tyres, in particular pneumatic tyres of the vehicle, while the vehicle is moving, the system comprising: - a control system for determining the tyre pressure of one or more tyres; - a pressure vessel for storing air under pressure; - a distributor connected to the pressure vessel, designed to supply or remove air from the pressure vessel and equipped with one or more adjustable valves; - a pipe system for supplying air from the pressure vessel to one or more tires and vice versa; - a control unit connected to the distributor, which is designed to control the one or more valves, in particular to open or close them, in order to adjust the tire pressure of the one or more tires;characterized by , that - the control system comprises a measuring system configured to measure a tire pressure of the one or more tires; - the vehicle comprises, in addition to the measuring system, one or more sensor systems designed to collect vehicle data relating to the tyre pressure of one or more of the tyres and to transmit them to the control system; - the control system is configured to receive the vehicle data and use it as input for calculating the optimal tire pressure for the vehicle's tires. [2] System according to claim 1, characterized by that a sensor system of the one or more sensor systems comprises a system from the following group: - a temperature sensor system for measuring the temperature around the vehicle, inside the vehicle, around one or more tires and / or in one or more tires; - a load-dependent brake pressure control for measuring a total load and / or load distribution on one or more tires; - an automatic air suspension system for measuring the total load and / or load distribution on one or more tires. [3] System according to claim 1, characterized by that the vehicle data includes data from the following group: - temperature measured by the temperature sensor system; - total load or load distribution on one or more tires, measured by the load-dependent brake pressure control; - Total load and / or load distribution on one or more tires, measured by an automatic air suspension system. [4] System according to claim 1, characterized bythat the control system determines, on the basis of the current tire pressure of one or more of the tires, whether and to what extent the tire pressure of the tire needs to be adjusted, whereby the control system serves to adjust the control unit so that the tire pressure corresponds as closely as possible to the determined optimal tire pressure. [5] System according to claim 1, characterized by that one or more bands are connected to a separate line leading to the measuring system. [6] System according to claim 1, characterized by that the measuring system is equipped with a central sensor system. [7] System according to claim 1, characterized bythat the system comprises a warning system configured to generate warnings when the control system detects a deviation of the measured tire pressure compared to the optimal tire pressure of one of one or more tires, and wherein the warning system is configured such that a driver of the vehicle can heed the warnings. [8] System according to claim 1, characterized by that the deviation is classified into different degrees with an associated warning system. [9] System according to claim 1, characterized by that the warning system includes different escalation levels depending on factors, such as factors from the group consisting of: - measured frequency of detection of a deviation each time after an adjustment has taken place; - an absolute and / or relative deviation exceeding a maximum value; - an absolute and / or relative growth of the deviations after each adjustment. [10] System according to claim 1, characterized by that the escalation levels in ascending escalation include the following actions: - a visual indication of the activation of the operating system; - a visual indication of a frequency and / or deviation that still allows safe driving but requires attention at the next service point; - an audiovisual indication of a frequency or deviation indicating a leak or other damage to one or more tires requiring an immediate stop. [11] System according to claim 1, characterized byin that a sensor system of the one or more sensor systems is configured to analyze the condition of the surface under one or more wheels of the vehicle on which the vehicle is moving, wherein the system optionally adjusts the tire pressure of the one or more tires in accordance with the analyzed surface, wherein, for example, a soft, loose and / or sloping surface leads to a setting to a lower tire pressure of the tires, and a harder and / or smoother surface, on the other hand, leads to an adjustment to a normal or higher tire pressure. [12] System according to claim 1, characterized by that the sensor system includes a video camera with an image recognition system. [13] System according to claim 1, characterized byin that a sensor system of the one or more sensor systems is configured to measure the traction of the vehicle, wherein the system adjusts the tire pressure of the tires of the one or more wheels of the vehicle based on the measured traction of one or more wheels, wherein reduced traction of one or more wheels results in a setting to a lower tire pressure of the tires and normal traction results in a setting to a normal tire pressure. [14] System according to claim 1, characterized by that the sensor system includes or makes use of an anti-lock braking system, ABS, an electronic stability program, ESP, an electronic braking system, EBS, an anti-skid control system, ASR and / or another traction control system of the vehicle.
Citation Information
Patent Citations
Apparatus for repeatable adjustment of tire pressure
US5540268A
