CN110926572A - Vehicle overload monitoring system and method based on fiber bragg grating sensor - Google Patents
Vehicle overload monitoring system and method based on fiber bragg grating sensor Download PDFInfo
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- CN110926572A CN110926572A CN201911127191.7A CN201911127191A CN110926572A CN 110926572 A CN110926572 A CN 110926572A CN 201911127191 A CN201911127191 A CN 201911127191A CN 110926572 A CN110926572 A CN 110926572A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
- G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
- G01G3/125—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing wherein the weighing element is an optical member
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
- G01G19/03—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing during motion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/18—Indicating devices, e.g. for remote indication; Recording devices; Scales, e.g. graduated
- G01G23/36—Indicating the weight by electrical means, e.g. using photoelectric cells
- G01G23/37—Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting
- G01G23/3728—Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting with wireless means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L17/00—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies
- G01L17/005—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies using a sensor contacting the exterior surface, e.g. for measuring deformation
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Abstract
The invention provides a vehicle overload monitoring system and method based on a fiber grating sensor, wherein the system comprises the following components: the system comprises a dynamic weighing module, a vehicle-mounted information module and a monitoring service center. The method measures the load of the vehicle through a dynamic weighing module; collecting and uploading vehicle information by using a vehicle-mounted information module; and the monitoring service center performs overweight judgment and feeds back results according to the received information of the dynamic weighing module and the vehicle-mounted intelligent suite. The invention has the advantages that the dynamic weighing is carried out by utilizing the fiber bragg grating sensing technology, the weighing efficiency is high, and the running vehicle can be efficiently and accurately weighed.
Description
Technical Field
The invention belongs to the technical field of traffic and transportation safety, and particularly relates to a vehicle overload monitoring system and method based on a fiber grating sensor.
Background
In recent years, the safety form of the key operation vehicle is becoming more severe, and problems such as overload and overrun still occur. The problem of overloading a car can cause a number of hazards: vehicle overrun overloading severely damages the highway infrastructure. The vehicle is overloaded, the mass is increased, the inertia is increased, the braking distance is lengthened, and the danger is increased. Because the vehicle after the overrun overload can not reach the normal speed and can not run, the vehicle occupies the lane for a long time, and the smoothness of the road is directly influenced. The driver drives the vehicle that transfinites and overloads, often can increase psychological burden and thought pressure, the easy operation mistake that appears influences driving safety, causes the traffic accident.
With the development of society, the country pays more attention to the road traffic safety. Various measures are taken by the relevant departments against the overload problem of the commercial vehicles. Dynamic weighing is widely used because of its high efficiency and cost saving. At present, a method for detecting weight by using current change influenced by strain is adopted in a common dynamic weighing method, and matching and judgment can be realized only by installing a matched vehicle identification device such as a camera.
Disclosure of Invention
The invention provides a vehicle overload monitoring system and method based on a fiber grating sensor, which utilize the fiber grating sensing technology to carry out dynamic weighing, do not need an external vehicle identification device, utilize a vehicle-mounted intelligent suite to upload vehicle information to a monitoring service center to judge the corresponding rated load of a vehicle type, match and compare the vehicle information with a weighing measurement result, and guide the vehicle to carry out the next processing.
The technical scheme of the system is that the vehicle overload monitoring system based on the fiber bragg grating sensor is characterized by comprising the following components: the system comprises a dynamic weighing module, a vehicle-mounted information module and a monitoring service center;
the dynamic weighing module is connected with the monitoring service center in a wireless mode; the vehicle-mounted information module is connected with the monitoring service center in a wireless mode.
The dynamic weighing module comprises: the system comprises a fiber bragg grating sensing module, an FBG sensor, a weighing module and a wireless information transmission module; the fiber bragg grating sensing module, the FBG sensor and the weighing module are sequentially connected in series in a wired mode to jointly complete dynamic weighing; the wireless information transmission module is connected with the fiber bragg grating sensing module through a lead.
The fiber grating sensing module comprises: ASE broadband light source, FBG sensor, fiber grating demodulator, 3db coupler; the 3db coupler is respectively connected with the ASE broadband light source, the FBG sensor and the fiber bragg grating demodulator in sequence through conducting wires;
light emitted by the ASE broadband light source enters the FBG sensor through the 3dB coupler, and the light meeting the Bragg condition is reflected; the FBG sensor causes Bragg reflection wavelength shift due to strain; the fiber bragg grating demodulator collects Bragg reflection wavelength drift of the 3dB coupler, and vehicle load is obtained through formula derivation;
the weighing module comprises a weighing platform and a cantilever beam, the cantilever beam is attached below the weighing platform and used for bearing the weight of a measured vehicle, the stress generated by the vehicle load is transmitted to the FBG sensor through the strain generated by the cantilever beam, and the borne vehicle load is measured by combining the stress and the strain;
the wireless information transmission module uploads the wavelength drift information collected by the fiber bragg grating sensing module to a monitoring service center;
the vehicle-mounted information module comprises: the system comprises a vehicle-mounted OBD, a GPS positioning module, an automobile running recorder, a wireless communication module, a tire detection sensor and a display;
the automobile driving recorder is respectively connected with the vehicle-mounted OBD, the GPS positioning module, the wireless communication module, the tire detection sensor and the display in sequence through the CAN bus.
The vehicle-mounted OBD is arranged at the head of the vehicle and used for monitoring and collecting vehicle state information;
the GPS positioning module is used for receiving satellite signals and acquiring vehicle position information;
the automobile running recorder is used for collecting and recording the vehicle form state information and the vehicle position information;
the tire detection sensor is used for measuring the air pressure in the vehicle tire;
the display is used for displaying the vehicle state information and the vehicle position information recorded by the automobile running recorder and the notification information sent by the monitoring service center, wherein the notification information comprises whether the vehicle is overweight or not and vehicle running and stopping instructions;
the wireless communication module is used for transmitting the vehicle state information, the vehicle position information, the vehicle tire pressure information and the like collected by the devices to the monitoring service center and receiving the information sent by the monitoring service center;
the monitoring service center is used for receiving vehicle state information, vehicle position information and vehicle tire pressure information sent by the vehicle-mounted information module;
the monitoring service center measures the load value of the vehicle as a by utilizing a tire pressure checking and measuring principle through the tire pressure information of the vehicle; and obtaining a vehicle load value b through the wavelength drift information uploaded by the dynamic weighing module, and averaging the vehicle load value a and the load value b to obtain a more accurate vehicle load value.
The monitoring service center can determine the road section range passed by the vehicle positioning twice through the acquired vehicle position information twice before and after; comparing the range of the road section where the vehicle is located with the position of the known dynamic weighing module, and judging whether the vehicle just passes through the dynamic weighing module; if the vehicle is overweight, the monitoring service center can obtain the known vehicle model according to the OBD of the vehicle so as to obtain the rated load of the vehicle, and the rated load is compared with the wavelength drift information obtained by the dynamic weighing module and the vehicle load obtained by the comprehensive calculation of the vehicle tire pressure so as to judge whether the vehicle is overweight. If the detected vehicle is not overweight, the service center sends information of no overweight to the vehicle and displays the information on a vehicle-mounted LED screen; if the detected vehicle is overweight, the overweight information is sent to the overweight vehicle to enable the overweight vehicle to stop nearby for recheck.
The invention discloses a vehicle overload monitoring method based on a fiber grating sensor, which comprises the following steps:
step 1: measuring the load of the vehicle through a dynamic weighing module;
the light emitted by the ASE broadband light source is incident to the FBG sensor, and the wavelength meeting the Bragg condition is reflected; at this time, if the FBG sensor is affected by strain, bragg reflection wavelength drift will be caused; the fiber grating demodulator derives the vehicle load by collecting Bragg reflection wavelength drift, and the main formula is as follows:
wherein, Δ λBFor Bragg reflection wavelength drift, λ is the wavelength emitted by the broadband light source, peη is the effective elastic-optical constant of the optical fiber, h is the height between the tail end of the cantilever beam and the bottom plate, and F is the vehicle load.
Step 2: collecting and uploading vehicle information by using a vehicle-mounted information module;
the vehicle-mounted information module collects vehicle state information, vehicle position information, vehicle tire pressure information and the like of a vehicle and uploads the vehicle state information, the vehicle position information, the vehicle tire pressure information and the like to the monitoring service center, wherein vehicle load can be obtained by a tire pressure difference method according to the vehicle tire pressure information, and the main formula is as follows:
wherein is F vehicle load, PtIs the tire internal air pressure, b is the tire width, R is the tire radius, and f is the tire sag height.
And step 3: the monitoring service center performs overweight judgment and feeds back results according to the received information of the dynamic weighing module and the vehicle-mounted intelligent suite;
the monitoring service center receives the vehicle information sent by the vehicle-mounted information module, and acquires the driving state information and the position information of the vehicle; the monitoring service center measures the load value of the vehicle as a by utilizing a tire pressure checking and measuring principle through the tire pressure information uploaded by the vehicle-mounted information module; and b, obtaining a vehicle load value b through a dynamic weighing module, and calculating an average value of a and b to obtain an accurate vehicle load value.
The monitoring service center can determine the road section range passed by the vehicle positioning twice through the acquired vehicle position information twice before and after; comparing the range of the road section where the vehicle is located with the position of the known dynamic weighing module, and judging whether the vehicle just passes through the dynamic weighing module; if the vehicle is overweight, the monitoring service center can obtain the known vehicle model according to the OBD of the vehicle so as to obtain the rated load of the vehicle, and the rated load is compared with the wavelength drift information obtained by the dynamic weighing module and the vehicle load obtained by the comprehensive calculation of the vehicle tire pressure so as to judge whether the vehicle is overweight. If the detected vehicle is not overweight, the service center sends information of no overweight to the vehicle and displays the information on a vehicle-mounted LED screen; if the detected vehicle is overweight, the overweight information is sent to the overweight vehicle to enable the overweight vehicle to stop nearby for recheck.
The invention has the advantages that the fiber bragg grating sensing technology is utilized to carry out dynamic weighing, and the weighing efficiency is high; an external vehicle identification device is not needed, and the facility cost is low; the vehicle weighing device can efficiently and accurately weigh the running vehicle.
Drawings
FIG. 1: is a system block diagram of the present invention;
FIG. 2: a schematic view of a weighing module;
FIG. 3: device layout.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The specific implementation mode of the system is a vehicle overload monitoring system based on a fiber grating sensor, and the system is characterized by comprising the following components: the system comprises a dynamic weighing module, a vehicle-mounted information module and a monitoring service center;
the dynamic weighing module is connected with the monitoring service center in a wireless mode; the vehicle-mounted information module is connected with the monitoring service center in a wireless mode.
The dynamic weighing module comprises: the system comprises a fiber bragg grating sensing module, an FBG sensor, a weighing module and a wireless information transmission module; the fiber bragg grating sensing module, the FBG sensor and the weighing module are sequentially connected in series in a wired mode to jointly complete dynamic weighing; the wireless information transmission module is connected with the fiber bragg grating sensing module through a lead.
The fiber grating sensing module comprises: ASE broadband light source, FBG sensor, fiber grating demodulator, 3db coupler; the 3db coupler is respectively connected with the ASE broadband light source, the FBG sensor and the fiber bragg grating demodulator in sequence through conducting wires;
light emitted by the ASE broadband light source enters the FBG sensor through the 3dB coupler, and the light meeting the Bragg condition is reflected; the FBG sensor causes Bragg reflection wavelength shift due to strain; the fiber bragg grating demodulator collects Bragg reflection wavelength drift of the 3dB coupler, and vehicle load is obtained through formula derivation;
the weighing module comprises a weighing platform and a cantilever beam, the cantilever beam is attached below the weighing platform and used for bearing the weight of a measured vehicle, the stress generated by the vehicle load is transmitted to the FBG sensor through the strain generated by the cantilever beam, and the borne vehicle load is measured by combining the stress and the strain;
the wireless information transmission module uploads the wavelength drift information collected by the fiber bragg grating sensing module to a monitoring service center;
the vehicle-mounted information module comprises: the system comprises a vehicle-mounted OBD, a GPS positioning module, an automobile running recorder, a wireless communication module, a tire detection sensor and a display;
the automobile driving recorder is respectively connected with the vehicle-mounted OBD, the GPS positioning module, the wireless communication module, the tire detection sensor and the display in sequence through the CAN bus.
The vehicle-mounted OBD is arranged at the head of the vehicle and used for monitoring and collecting vehicle state information;
the GPS positioning module is used for receiving satellite signals and acquiring vehicle position information;
the automobile running recorder is used for collecting and recording the vehicle form state information and the vehicle position information;
the tire detection sensor is used for measuring the air pressure in the vehicle tire;
the display is used for displaying the vehicle state information and the vehicle position information recorded by the automobile running recorder and the notification information sent by the monitoring service center, wherein the notification information comprises whether the vehicle is overweight or not and vehicle running and stopping instructions;
the wireless communication module is used for transmitting the vehicle state information, the vehicle position information, the vehicle tire pressure information and the like collected by the devices to the monitoring service center and receiving the information sent by the monitoring service center;
the monitoring service center is used for receiving vehicle state information, vehicle position information and vehicle tire pressure information sent by the vehicle-mounted information module;
the monitoring service center measures the load value of the vehicle as a by utilizing a tire pressure checking and measuring principle through the tire pressure information of the vehicle; and obtaining a vehicle load value b through the wavelength drift information uploaded by the dynamic weighing module, and averaging the vehicle load value a and the load value b to obtain a more accurate vehicle load value.
The monitoring service center can determine the road section range passed by the vehicle positioning twice through the acquired vehicle position information twice before and after; comparing the range of the road section where the vehicle is located with the position of the known dynamic weighing module, and judging whether the vehicle just passes through the dynamic weighing module; if the vehicle is overweight, the monitoring service center can obtain the known vehicle model according to the OBD of the vehicle so as to obtain the rated load of the vehicle, and the rated load is compared with the wavelength drift information obtained by the dynamic weighing module and the vehicle load obtained by the comprehensive calculation of the vehicle tire pressure so as to judge whether the vehicle is overweight. If the detected vehicle is not overweight, the service center sends information of no overweight to the vehicle and displays the information on a vehicle-mounted LED screen; if the detected vehicle is overweight, the overweight information is sent to the overweight vehicle to enable the overweight vehicle to stop nearby for recheck.
The ASE broadband light source is ASE-Md1020-02, the FBG sensor is CGT1000, the fiber bragg grating demodulator is WUTOS-BGD-16M, the weighing platform adopts an A3 carbon steel cantilever beam, the vehicle-mounted OBD is OBD II, and the satellite positioning system is a 16-channel module of G STAR; the tire detection sensor is a monocrystalline silicon pressure semiconductor sensor of the model ST 18016; the automobile driving recorder is D5M in model, the 4G antenna is AC-Q7027-N21 in model, and the display is CP4 in model;
the following describes an embodiment of the present invention with reference to fig. 1 to 3, which is a method for monitoring vehicle overload based on a fiber grating sensor, and includes the following steps:
step 1: measuring the load of the vehicle through a dynamic weighing module;
the light emitted by the ASE broadband light source is incident to the FBG sensor, and the wavelength meeting the Bragg condition is reflected; at this time, if the FBG sensor is affected by strain, bragg reflection wavelength drift will be caused; the fiber grating demodulator derives the vehicle load by collecting Bragg reflection wavelength drift, and the main formula is as follows:
wherein, Δ λBFor Bragg reflection wavelength drift, λ is the wavelength emitted by the broadband light source, peThe effective elastic-optical constant of the optical fiber is η, the adhesion coefficient is F, the vehicle load is F, the length of the cantilever beam is L, the elastic modulus of the material is E, the inertia moment of the section of the cantilever beam is I, and the height between the tail end of the cantilever beam and the bottom plate is h.
Step 2: collecting and uploading vehicle information by using a vehicle-mounted information module;
the vehicle-mounted information module collects vehicle state information, vehicle position information, vehicle tire pressure information and the like of a vehicle and uploads the vehicle state information, the vehicle position information, the vehicle tire pressure information and the like to the monitoring service center, wherein vehicle load can be obtained by a tire pressure difference method according to the vehicle tire pressure information, and the main formula is as follows:
wherein is F vehicle load, PtIs the tire internal air pressure, b is the tire width, R is the tire radius, and f is the tire sag height.
And step 3: the monitoring service center performs overweight judgment and feeds back results according to the received information of the dynamic weighing module and the vehicle-mounted intelligent suite;
the monitoring service center receives the vehicle information sent by the vehicle-mounted information module, and acquires the driving state information and the position information of the vehicle; the monitoring service center measures the load value of the vehicle as a by utilizing a tire pressure checking and measuring principle through the tire pressure information uploaded by the vehicle-mounted information module; and b, obtaining a vehicle load value b through a dynamic weighing module, and calculating an average value of a and b to obtain an accurate vehicle load value.
It should be understood that the above description of the preferred embodiments is given for clarity and not for any purpose of limitation, and that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. A vehicle overload monitoring system based on a fiber grating sensor is characterized by comprising: the system comprises a dynamic weighing module, a vehicle-mounted information module and a monitoring service center; the dynamic weighing module is connected with the monitoring service center in a wireless mode; the vehicle-mounted information module is connected with the monitoring service center in a wireless mode;
the dynamic weighing module comprises: the system comprises a fiber bragg grating sensing module, an FBG sensor, a weighing module and a wireless information transmission module; the fiber bragg grating sensing module, the FBG sensor and the weighing module are sequentially connected in series in a wired mode to jointly complete dynamic weighing; the wireless information transmission module is connected with the fiber bragg grating sensing module through a lead;
the fiber grating sensing module comprises: ASE broadband light source, FBG sensor, fiber grating demodulator, 3db coupler; the 3db coupler is respectively connected with the ASE broadband light source, the FBG sensor and the fiber bragg grating demodulator in sequence through conducting wires;
light emitted by the ASE broadband light source enters the FBG sensor through the 3dB coupler, and the light meeting the Bragg condition is reflected; the FBG sensor causes Bragg reflection wavelength shift due to strain; the fiber bragg grating demodulator collects Bragg reflection wavelength drift of the 3dB coupler, and vehicle load is obtained through formula derivation;
the weighing module comprises a weighing platform and a cantilever beam, the cantilever beam is attached below the weighing platform and used for bearing the weight of a measured vehicle, the stress generated by the vehicle load is transmitted to the FBG sensor through the strain generated by the cantilever beam, and the borne vehicle load is measured by combining the stress and the strain;
the wireless information transmission module uploads the wavelength drift information collected by the fiber bragg grating sensing module to a monitoring service center;
the vehicle-mounted information module comprises: the system comprises a vehicle-mounted OBD, a GPS positioning module, an automobile running recorder, a wireless communication module, a tire detection sensor and a display;
the vehicle running recorder is respectively connected with the vehicle-mounted OBD, the GPS positioning module, the wireless communication module, the tire detection sensor and the display in sequence through a CAN bus;
the vehicle-mounted OBD is arranged at the head of the vehicle and used for monitoring and collecting vehicle state information;
the GPS positioning module is used for receiving satellite signals and acquiring vehicle position information;
the automobile running recorder is used for collecting and recording the vehicle form state information and the vehicle position information;
the tire detection sensor is used for measuring the air pressure in the vehicle tire;
the display is used for displaying the vehicle state information and the vehicle position information recorded by the automobile running recorder and the notification information sent by the monitoring service center, wherein the notification information comprises whether the vehicle is overweight or not and vehicle running and stopping instructions;
the wireless communication module is used for transmitting the vehicle state information, the vehicle position information, the vehicle tire pressure information and the like collected by the devices to the monitoring service center and receiving the information sent by the monitoring service center;
the monitoring service center is used for receiving vehicle state information, vehicle position information and vehicle tire pressure information sent by the vehicle-mounted information module;
the monitoring service center measures the load value of the vehicle as a by utilizing a tire pressure checking and measuring principle through the tire pressure information of the vehicle; obtaining a vehicle load value b through wavelength drift information uploaded by the dynamic weighing module, and averaging the vehicle load value a and the load value b to obtain a more accurate vehicle load value;
the monitoring service center can determine the road section range passed by the vehicle positioning twice through the acquired vehicle position information twice before and after; comparing the range of the road section where the vehicle is located with the position of the known dynamic weighing module, and judging whether the vehicle just passes through the dynamic weighing module; if the vehicle is overweight, the monitoring service center can obtain the known vehicle model according to the OBD of the vehicle so as to obtain the rated load of the vehicle, and the rated load is compared with the wavelength drift information obtained by the dynamic weighing module and the vehicle load obtained by the comprehensive calculation of the vehicle tire pressure so as to judge whether the vehicle is overweight; if the detected vehicle is not overweight, the service center sends information of no overweight to the vehicle and displays the information on a vehicle-mounted LED screen; if the detected vehicle is overweight, the overweight information is sent to the overweight vehicle to enable the overweight vehicle to stop nearby for recheck.
2. A method for monitoring overload of a vehicle based on a fiber grating sensor by using the system for monitoring overload of a vehicle based on a fiber grating sensor according to claim 1, comprising the following steps:
step 1: measuring the load of the vehicle through a dynamic weighing module;
step 2: collecting and uploading vehicle information by using a vehicle-mounted information module;
and step 3: and the monitoring service center performs overweight judgment and feeds back results according to the received information of the dynamic weighing module and the vehicle-mounted intelligent suite.
3. The vehicle overload monitoring method based on the fiber grating sensor as recited in claim 2, wherein:
the vehicle load measured by the dynamic weighing module in the step 1 is specifically as follows:
the light emitted by the ASE broadband light source is incident to the FBG sensor, and the wavelength meeting the Bragg condition is reflected; at this time, if the FBG sensor is affected by strain, bragg reflection wavelength drift will be caused; the fiber grating demodulator derives the vehicle load by collecting Bragg reflection wavelength drift, and the main formula is as follows:
wherein, Δ λBFor Bragg reflection wavelength drift, λ is the wavelength emitted by the broadband light source, peη is the effective elastic-optical constant of the optical fiber, h is the height between the tail end of the cantilever beam and the bottom plate, and F is the vehicle load.
4. The vehicle overload monitoring method based on the fiber grating sensor as recited in claim 2, wherein:
the step 2 of collecting and uploading vehicle information by using the vehicle-mounted information module specifically comprises the following steps:
the vehicle-mounted information module collects vehicle state information, vehicle position information, vehicle tire pressure information and the like of a vehicle and uploads the vehicle state information, the vehicle position information, the vehicle tire pressure information and the like to the monitoring service center, wherein vehicle load can be obtained by a tire pressure difference method according to the vehicle tire pressure information, and the main formula is as follows:
wherein is F vehicle load, PtIs the tire internal air pressure, b is the tire width, R is the tire radius, and f is the tire sag height.
5. The vehicle overload monitoring method based on the fiber grating sensor as recited in claim 2, wherein:
in step 3, the monitoring service center performs overweight judgment and feeds back results according to the received information of the dynamic weighing module and the vehicle-mounted intelligent suite, and the method specifically comprises the following steps:
the monitoring service center receives the vehicle information sent by the vehicle-mounted information module, and acquires the driving state information and the position information of the vehicle; the monitoring service center measures the load value of the vehicle as a by utilizing a tire pressure checking and measuring principle through the tire pressure information uploaded by the vehicle-mounted information module; obtaining a vehicle load value b through a dynamic weighing module, and calculating an average value of a and b to obtain an accurate vehicle load value;
the monitoring service center can determine the road section range passed by the vehicle positioning twice through the acquired vehicle position information twice before and after; comparing the range of the road section where the vehicle is located with the position of the known dynamic weighing module, and judging whether the vehicle just passes through the dynamic weighing module; if the vehicle is overweight, the monitoring service center can obtain the known vehicle model according to the OBD of the vehicle so as to obtain the rated load of the vehicle, and the rated load is compared with the wavelength drift information obtained by the dynamic weighing module and the vehicle load obtained by the comprehensive calculation of the vehicle tire pressure so as to judge whether the vehicle is overweight. If the detected vehicle is not overweight, the service center sends information of no overweight to the vehicle and displays the information on a vehicle-mounted LED screen; if the detected vehicle is overweight, the overweight information is sent to the overweight vehicle to enable the overweight vehicle to stop nearby for recheck.
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| CN114659603A (en) * | 2022-03-02 | 2022-06-24 | 同济大学 | Road surface dynamic weighing system based on friction nanometer power generation effect |
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| CN104132722A (en) * | 2014-07-30 | 2014-11-05 | 西南交通大学 | Load detection method based on tyre pressure, and bus passenger flow volume computing method and device based on tyre pressure detection |
| CN205427973U (en) * | 2015-10-30 | 2016-08-03 | 广东广信通信服务有限公司 | Intelligent terminal and public service system of on -vehicle information based on OBD -II |
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| CN110108340A (en) * | 2019-06-04 | 2019-08-09 | 西北铁道电子股份有限公司 | A kind of automobile dynamically weighing device |
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| CN113507494A (en) * | 2021-05-26 | 2021-10-15 | 杭州金毅科技有限公司 | Method and system for source treatment and super-collection |
| CN114659603A (en) * | 2022-03-02 | 2022-06-24 | 同济大学 | Road surface dynamic weighing system based on friction nanometer power generation effect |
| CN114659603B (en) * | 2022-03-02 | 2024-04-23 | 同济大学 | Road surface dynamic weighing system based on friction nano power generation effect |
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