CN113525387B - Road service quality detection method and system based on dynamic tire pressure of tire - Google Patents
Road service quality detection method and system based on dynamic tire pressure of tire Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
- B60W40/06—Road conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W2050/0001—Details of the control system
- B60W2050/0019—Control system elements or transfer functions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2422/00—Indexing codes relating to the special location or mounting of sensors
- B60W2422/70—Indexing codes relating to the special location or mounting of sensors on the wheel or the tire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2530/00—Input parameters relating to vehicle conditions or values, not covered by groups B60W2510/00 or B60W2520/00
- B60W2530/18—Distance travelled
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2530/00—Input parameters relating to vehicle conditions or values, not covered by groups B60W2510/00 or B60W2520/00
- B60W2530/20—Tyre data
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2556/00—Input parameters relating to data
- B60W2556/45—External transmission of data to or from the vehicle
- B60W2556/50—External transmission of data to or from the vehicle for navigation systems
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Abstract
The invention belongs to the field of road surface detection, and particularly relates to a road surface service quality detection method and system based on dynamic tire pressure of a tire. A road service quality detection method based on dynamic tire pressure of a tire comprises the following main steps: s1: collecting dynamic tire pressure signals of vehicle tires, longitudinal driving mileage of a vehicle and vehicle driving space positioning; s2: carrying out data fragmentation according to a preset distance interval; s3: eliminating speed interference on data; s4: weighting and filtering the data; s5: calculating the road surface jolt degree; s6: and obtaining a road surface jolt index according to the road surface jolt degree, and evaluating the road surface service quality caused by road surface deformation. According to the detection method, the road service quality detection based on the dynamic tire pressure of the tire is adopted, and the measurement indexes for comprehensively evaluating the road surface detection method and the road surface detection system based on the vehicle-road coupling are adopted from the road surface structure change and the road surface deformation condition.
Description
Technical Field
The invention belongs to the field of road pavement detection, and particularly relates to a road service quality detection method and a road service quality detection system based on dynamic tire pressure of a tire.
Background
The road service quality is a measurement index for comprehensive evaluation from the road structure change and the road deformation condition by a road detection method and a road coupling system.
At present, road pavement detection and evaluation mainly adopt a pavement technical condition evaluation method, pavement damage condition detection is to identify pavement disease conditions through a visual technology, pavement driving quality, pavement bumping and pavement abrasion are to measure longitudinal elevation change and pavement structure conditions of a pavement by using a laser displacement technology, and pavement rutting is to measure transverse elevation conditions of the pavement by using a section laser elevation technology. However, the real-time monitoring requirement of road network grade pavement service quality of the road maintenance management unit is not easily met. The traditional road surface detection mainly detects the road surface damage condition, the road surface running quality, the road surface abrasion, the road surface rutting, the road surface vehicle jumping and the like through an image vision and laser displacement measurement method, the detection cost is high, the detection period is more than one month on average, and the objectivity reaction of the road surface condition still has a large promotion space.
Disclosure of Invention
Aiming at the technical problems, the invention provides a service quality detection method and a service quality detection system based on the dynamic tire pressure of a tire.
In order to achieve the purpose, the invention adopts the technical scheme that the road service quality detection method based on the dynamic tire pressure of the tire comprises the following main steps: s1: collecting dynamic tire pressure signals of vehicle tires, longitudinal driving mileage of a vehicle and vehicle driving space positioning; s2: carrying out data fragmentation according to a preset distance interval; s3: eliminating speed interference on data; s4: weighting and filtering the data; s5: calculating the road surface jolt degree; s6: and obtaining a road surface jolt index according to the road surface jolt degree, and evaluating the road surface service quality caused by road surface deformation.
Preferably, the data slicing method in S2 is as follows: and storing the dynamic tire pressure data according to a time domain, and carrying out data fragmentation according to the mileage measurement information, wherein the data fragmentation interval is 1 meter.
Preferably, the method for eliminating the speed disturbance in S3 is to eliminate the speed influence by an equivalent tire pressure conversion method, which is as follows:
wherein p is n For dynamic tyre pressure signals at standardized speed, p c Dynamic tire pressure signal at actual speed, V n To normalize velocity, V c The actual running speed, m, is a speed coefficient.
Preferably, the weighting filtering method in S4 is to use a frequency weighting network to perform weighting filtering, and the frequency weighting method of the dynamic tire pressure signals is as follows:
wherein, f 1 To low-pass cut-off frequency, f 2 Is a high pass cut-off frequency, f is a dynamic tire pressure signal frequency, f w The gain modification value at frequency f.
Preferably, in the step S5, the road surface jerk is calculated by a road surface jerk calculation method, which includes:
FI＝sqrt[∫f w p n dt]
wherein FI is road surface jounce, p n Is a dynamic tire pressure signal.
Preferably, the calculation model of the road bump index in S6 is as follows:
wherein PFI is road surface jounce index, FI is road surface jounce degree, a 1 、a 2 、a 3 Are coefficients.
Preferably, the system for detecting the road service quality based on the dynamic tire pressure of the tire is suitable for the method for detecting the road service quality based on the dynamic tire pressure of the tire, and comprises a power module and further comprises: the visual terminal is electrically connected with the power supply module; the control module is electrically connected with the visual terminal; the mileage measuring module is arranged on the wheel, is electrically connected with the control module and is used for measuring the longitudinal running distance of the vehicle; the positioning module is electrically connected with the control module and is used for acquiring the space positioning of the vehicle in motion; and the vehicle dynamic acquisition module is arranged on the wheel, is electrically connected with the control module and is used for acquiring the information of the vehicle in motion.
Preferably, the vehicle dynamic acquisition module comprises: the dynamic tire pressure sensor is arranged on the tire, is used for collecting the variation of the air pressure in the tire and is electrically connected with the control module; the acceleration sensor is arranged on the suspension, is used for collecting the vibration of the vehicle body chassis suspension in the running process of the vehicle, and is electrically connected with the control module; the modulation module is used for providing a direct current constant current source for the dynamic tire pressure sensor and the acceleration sensor and is electrically connected with the power supply module; and the analog-to-digital conversion module is used for converting the dynamic tire pressure analog signal and the acceleration analog signal into a dynamic tire pressure digital signal and an acceleration digital signal and is electrically connected with the control module.
The beneficial effects created by the invention are as follows: the detection method comprises the steps of detecting the road service quality based on the dynamic tire pressure of the tire, adopting a road detection method and a road detection system for coupling the vehicle and the road to comprehensively evaluate measurement indexes from the change of a road structure and the deformation condition of the road, processing collected tire pressure signals by using a data fragmentation, speed equivalent change and weighting filtering method, extracting characteristic signals of the deformation condition of the road, and calculating a road bump index value and an evaluation grade reflecting the service quality of the road by using a road bump calculation method and a bump index calculation model.
Drawings
In order to more clearly illustrate the invention in its embodiments, reference will now be made briefly to the accompanying drawings, which are to be used in the embodiments. In all the drawings, the elements or parts are not necessarily drawn to actual scale.
FIG. 1 is a flow chart of a method for detecting quality of service of a roadway;
FIG. 2 is a schematic diagram showing a relationship between a road bump index and an actual road surface;
FIG. 3 is a block diagram of a roadway quality of service detection system;
in the figure: the method comprises the steps of 1-a visual terminal, 2-a power supply module, 3-a control module, 4-a vehicle dynamic acquisition module, 41-an analog-to-digital conversion module, 42-a modulation module, 43-a dynamic tire pressure sensor, 44-an acceleration sensor, 5-a mileage measurement module and 6-a positioning module.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only used as examples, and the protection scope of the present invention is not limited thereby.
A road service quality detection method based on dynamic tire pressure of a tire comprises the following main steps: s1: collecting dynamic tire pressure signals of vehicle tires, longitudinal driving mileage of vehicles and vehicle driving space positioning. S2: and carrying out data slicing according to the preset distance interval. The data slicing method in S2 is as follows: and storing the dynamic tire pressure data according to a time domain, and carrying out data fragmentation according to the mileage measurement information, wherein the data fragmentation interval is 1 meter.
S3: and eliminating speed interference on the data. The method for eliminating the speed interference in the step S3 is to eliminate the speed influence through an equivalent tire pressure conversion method, where the equivalent tire pressure conversion method is as follows:
wherein p is n For dynamic tyre pressure signals at standardized speed, p c Dynamic tire pressure signal at actual speed, V n To normalize velocity, V c The actual running speed, m, is a speed coefficient. V n The normalized speed may be selected to be 80 km/h.
S4: and performing weighted filtering on the data. The weighting filtering method in S4 is to use a frequency weighting network for weighting filtering, and the frequency weighting method of the dynamic tire pressure signal is as follows:
wherein f is 1 To low-pass cut-off frequency, f 2 Is a high pass cut-off frequency, f is a dynamic tire pressure signal frequency, f w The gain modification value at frequency f. The main frequency component of the dynamic tire pressure variation signal is below 100Hz while the lowest response frequency of the hardware of the dynamic tire pressure sensor 43 is considered to be 3.15 Hz. Therefore, the band limit is set to 0.4 to 100 Hz.
Therefore, the set goals and principles of the frequency weighting network are as follows:
(1) and filtering the main frequency band of the dynamic tire pressure to remove frequency components above 100 Hz.
(2) The frequency component of dynamic tire pressure change caused by road surface characteristics is effectively gained, and other frequency components are attenuated.
(3) And (3) revising the frequency transfer function in the W by comparing the difference of the vibration acceleration and the dynamic tire pressure frequency component at the same time under the same condition.
S5: and calculating the road surface jolt degree. In S5, the road surface jounce degree is calculated by a road surface jounce degree calculation method as follows:
FI＝sqrt[∫f w (p n )dt]
wherein FI is road surface jounce, p n Is a dynamic tire pressure signal.
S6: and obtaining a road jolt index according to the road jolt degree, and using the road jolt index to evaluate the road service quality caused by road deformation. The calculation model of the road bump index in S6 is as follows:
wherein PFI is road surface jounce index, FI is road surface jounce degree, a 1 、a 2 、a 3 Are coefficients.
The road surface bump index data output data mainly comprises the following data: the number, the road name, the lane, the direction, the time, the start, the time, the stop, the longitude, the start, the latitude, the stop, the unit length, the bump degree, the bump index and the evaluation grade. The longitude and latitude positioning coordinate system adopts national geodetic coordinates CGCS2000, the bumping index value field is [0,100], and the evaluation grades are excellent, good, medium, inferior and poor.
A road service quality detection system based on dynamic tire pressure of the tire, is suitable for a road service quality detection method based on dynamic tire pressure of the tire, including the power module 2, also include: the system comprises a visualization terminal, a control module 3, a mileage measuring module 5, a positioning module 6 and a vehicle dynamic acquisition module 4. The visual terminal is electrically connected with the power module 2. The control module 3 is electrically connected with the visual terminal. The mileage measuring module 5 is installed on the wheel, electrically connected with the control module 3, and used for measuring the longitudinal running distance of the vehicle. The positioning module 6 is electrically connected with the control module 3 and is used for obtaining the space positioning of the vehicle in motion.
The control module 3 adopts an embedded processor as a core control unit, has a PCIE high-speed data communication interface, a USB data communication interface, an RJ45 network card interface, a TF card interface, a 12V2A power supply interface and the like, and supports 5G/WIFI wireless communication control and data transmission. The core control unit has 4GB ROM storage and 1GB RAM storage, processor main frequency 1GHz, and 4 cores.
The visual terminal comprises a tablet personal computer, a mobile phone terminal, a vehicle central control screen and the like. Which can support control module 3 control and data acquisition status monitoring. And the WIFI wireless network is connected with the control module 3 to perform data acquisition control and data transmission management.
Wherein, the dynamic tire pressure signal of the vehicle tire, the longitudinal driving distance of the vehicle and the vehicle driving space positioning are collected in the step S1 and are respectively collected by the dynamic vehicle collecting module 4, the distance measuring module 5 and the positioning module 6.
Specifically, the vehicle dynamic acquisition module 4 is mounted on a wheel, electrically connected to the control module 3, and configured to acquire information of the vehicle in motion. The vehicle dynamics acquisition module 4 includes: a dynamic tire pressure sensor 43, an acceleration sensor 44, a modulation module 42, and an analog-to-digital conversion module 41. The acceleration sensor 44 is mounted on the suspension, and is used for collecting vibration of the vehicle body chassis suspension in the vehicle running process, outputting a vibration analog signal and electrically connected with the control module 3. The modulation module 42 is electrically connected to the power module 2, and is configured to provide a dc constant current source for the dynamic tire pressure sensor 43 and the acceleration sensor 44, filter, gain, and isolate the dynamic tire pressure analog signal and the vehicle vibration analog signal, and output a stable analog signal. The analog-to-digital conversion module 41 is electrically connected to the control module 3, and is configured to convert the dynamic tire pressure analog signal and the acceleration analog signal into a dynamic tire pressure digital signal and an acceleration digital signal, and transmit the dynamic tire pressure digital signal and the acceleration digital signal to the control module 3 through the PCIE high-speed data communication interface.
The dynamic tire pressure sensor 43 is mounted on the tire, is used for collecting the variation of the air pressure in the tire, and is electrically connected with the control module 3. The dynamic tire pressure sensor 43 is connected to the inflating valve of the vehicle tire by using a Y-shaped mounting structure, the dynamic tire pressure sensor 43 can acquire the dynamic change condition of the tire pressure of the vehicle tire in the longitudinal running process of the road surface, and then the dynamic tire pressure sensor is processed by using a dynamic tire pressure signal data processing method, and the road surface bumping index and the rating grade are output, so that the detection of the road surface structure change and the road surface deformation condition of the road surface layer is realized. The dynamic tire pressure sensor 43 is an ICP dynamic pressure sensor with a utilization rate of 50KHZ and a resolution of 0.001 kPa.
Specifically, the mileage measuring module 5 measures the longitudinal running distance of the vehicle by using an optical wheel speed encoder. The encoder is arranged on a central shaft of a hub of a rear wheel of the vehicle by using a weight disc mechanical device, the weight disc mechanical device transmits signals of the dynamic tire pressure sensor 43 by using a mercury slip ring, the mileage measurement precision of the encoder is less than 1mm, and the waterproof grade is IP 67.
Specifically, the big dipper positioning system is carried in the orientation module 6, and big dipper positioning system direct mount is installed inside the vehicle, through extension big dipper positioning signal receiving antenna install in the vehicle top, and the data output rate of its big dipper location is 10Hz, and horizontal space positioning error is less than 1 meter to use IMU to carry out the inertial measurement that the vehicle travel, solve not have the positioning signal problem in the tunnel.
The detection method comprises the steps of detecting the road service quality based on the dynamic tire pressure of the tire, adopting a road detection method and a road detection system for coupling the vehicle and the road to comprehensively evaluate measurement indexes from the change of a road structure and the deformation condition of the road, processing collected tire pressure signals by using a data fragmentation, speed equivalent change and weighting filtering method, extracting characteristic signals of the deformation condition of the road, and calculating a road bump index value and an evaluation grade reflecting the service quality of the road by using a road bump calculation method and a bump index calculation model.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or substitutions do not depart from the spirit of the embodiments of the present invention, and they should be construed as being covered by the appended claims and their equivalents.
Claims (5)
1. A road service quality detection method based on dynamic tire pressure of a tire is characterized by comprising the following main steps:
s1: collecting dynamic tire pressure signals of vehicle tires, longitudinal driving mileage of a vehicle and vehicle driving space positioning;
s2: carrying out data fragmentation according to a preset distance interval;
s3: eliminating speed interference on data; the speed influence elimination is achieved through an equivalent tire pressure conversion method, which comprises the following steps:
wherein p is n For dynamic tyre pressure signals at standardized speed, p c Dynamic tire pressure signal at actual speed, V n To normalize velocity, V c The actual running speed, m is a speed coefficient;
s4: weighting and filtering the data; the weighting filtering is carried out by adopting a frequency weighting network, and the frequency weighting method of the dynamic tire pressure signals comprises the following steps:
wherein f is 1 Is a low-pass cut-off frequency, f 2 A high pass cut-off frequency, f a dynamic tire pressure signal frequency, f w A weighting filter function for the tire pressure;
s5: calculating the road surface jolt degree; calculating the road surface jolt degree by using a road surface jolt degree calculation method, wherein the road surface jolt degree calculation method comprises the following steps:
Fl＝sqrt[∫f w p n dt]
wherein FI is road bump degree, p n Is a dynamic tire pressure signal;
s6: and obtaining a road surface jolt index according to the road surface jolt degree, and evaluating the road surface service quality caused by road surface deformation.
2. The method for detecting road service quality based on dynamic tire pressure of tire according to claim 1, wherein said data slicing method in S2 is: and storing the dynamic tire pressure data according to a time domain, and carrying out data fragmentation according to the mileage measurement information, wherein the data fragmentation interval is 1 meter.
3. A road service quality detection method based on tire dynamic tire pressure according to claim 2, wherein the calculation model of road bump index in S6 is as follows:
wherein PFI is road surface jounce index, FI is road surface jounce degree, a 1 、a 2 、a 3 Are coefficients.
4. A road service quality detection system based on dynamic tire pressure of a tire, which is suitable for the road service quality detection method based on dynamic tire pressure of a tire as claimed in any one of claims 1 to 3, and comprises a power module, and is characterized by further comprising:
the visual terminal is electrically connected with the power supply module;
the control module is electrically connected with the visual terminal;
the mileage measuring module is arranged on the wheel, is electrically connected with the control module and is used for measuring the longitudinal running distance of the vehicle;
the positioning module is electrically connected with the control module and is used for acquiring the space positioning of the vehicle in motion;
and the vehicle dynamic acquisition module is arranged on the wheel, is electrically connected with the control module and is used for acquiring the information of the vehicle in motion.
5. The system of claim 4, wherein the vehicle dynamic collection module comprises:
the dynamic tire pressure sensor is arranged on the tire, is used for collecting the variation of the air pressure in the tire and is electrically connected with the control module;
the acceleration sensor is arranged on the suspension, is used for collecting the vibration of the vehicle body chassis suspension in the running process of the vehicle and is electrically connected with the control module;
the modulation module is used for providing a direct current constant current source for the dynamic tire pressure sensor and the acceleration sensor and is electrically connected with the power supply module;
and the analog-to-digital conversion module is used for converting the dynamic tire pressure analog signal and the acceleration analog signal into a dynamic tire pressure digital signal and an acceleration digital signal and is electrically connected with the control module.
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| CN114211926B (en) * | 2021-12-31 | 2022-08-05 | 重庆工业职业技术学院 | Automobile suspension control system for bumpy road surface |
| CN114739350B (en) * | 2022-04-12 | 2023-09-26 | 招商局公路信息技术（重庆）有限公司 | Method and system for calibrating road surface dynamic tire pressure detector based on modal excitation |
| CN116103987A (en) * | 2022-07-05 | 2023-05-12 | 港珠澳大桥管理局 | Road surface condition monitoring method, device and computer equipment |
| CN116176594B (en) * | 2023-04-26 | 2023-06-30 | 禾多科技（北京）有限公司 | Driving environment sensing method and system for automatic driving vehicle |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4213222A1 (en) * | 1992-04-22 | 1993-10-28 | Porsche Ag | Detecting roughness of road surface on board vehicle - detecting rolling noise of wheel using accelerometer or microphone, bandpass filtering, forming effective value, low-pass filtering and compensating for other influences e.g. speed or tyre pressure. |
| JP4496598B2 (en) * | 2000-04-06 | 2010-07-07 | 株式会社デンソー | Road surface condition identification device |
| JP4415704B2 (en) * | 2004-03-03 | 2010-02-17 | 株式会社アドヴィックス | Road surface roughness estimation device and road surface roughness estimation method |
| JP2011131688A (en) * | 2009-12-24 | 2011-07-07 | Kyocera Corp | Module for detecting road surface condition and module for detecting tire air pressure including the same |
| WO2012162241A2 (en) * | 2011-05-20 | 2012-11-29 | Northeastern University | Real-time wireless dynamic tire pressure sensor and energy harvesting system |
| CN103318180B (en) * | 2013-05-28 | 2015-09-09 | 万向钱潮股份有限公司 | A kind of vehicle road out-of-flat automatic recognition system and method |
| BR112016003450B1 (en) * | 2014-06-09 | 2022-04-26 | Nira Dynamics Ab | Method and system for detecting a short-term irregularity of a road surface under a driving vehicle having at least one first wheel and computer readable storage medium |
| CN206581119U (en) * | 2017-03-06 | 2017-10-24 | 江苏省交通工程集团百润工程检测有限公司 | A kind of Road surface level instrument |
| JP6777103B2 (en) * | 2018-01-19 | 2020-10-28 | 株式会社Ｓｏｋｅｎ | Road surface condition determination device and tire system including it |
| IT201900021270A1 (en) * | 2019-11-15 | 2021-05-15 | Pirelli | METHOD AND SYSTEM TO ESTIMATE A PARAMETER OF DISUNIFORMITY OF A ROAD SEGMENT |
| CN110967401B (en) * | 2019-12-27 | 2022-05-17 | 招商局公路信息技术（重庆）有限公司 | Method suitable for evaluating driving comfort of highway asphalt pavement |
| CN112924658A (en) * | 2021-01-28 | 2021-06-08 | 招商局公路信息技术（重庆）有限公司 | Vehicle dynamic tire pressure acquisition system and method |
| CN113008985B (en) * | 2021-02-24 | 2023-10-31 | 招商局公路信息技术（重庆）有限公司 | Method for evaluating road pavement structure by using tire/pavement noise |
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