CN110901653A - Automobile load detection device, system and method - Google Patents

Automobile load detection device, system and method Download PDF

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Publication number
CN110901653A
CN110901653A CN201911231911.4A CN201911231911A CN110901653A CN 110901653 A CN110901653 A CN 110901653A CN 201911231911 A CN201911231911 A CN 201911231911A CN 110901653 A CN110901653 A CN 110901653A
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China
Prior art keywords
load
vehicle
deformation
elastic
tested
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Inventor
朱路生
朱俊峰
宋誓利
吴立慧
于夫足
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Anhui Jianghuai Automobile Group Corp
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Anhui Jianghuai Automobile Group Corp
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Priority to CN201911231911.4A priority Critical patent/CN110901653A/en
Publication of CN110901653A publication Critical patent/CN110901653A/en
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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
    • B60W40/12—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 parameters of the vehicle itself, e.g. tyre models
    • B60W40/13—Load or weight
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
    • B60K28/08—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the cargo, e.g. overload
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
    • G01G19/086—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles wherein the vehicle mass is dynamically estimated

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  • Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Mathematical Physics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

The invention provides an automobile load detection device, system and method, comprising an elastic load-bearing part, a deformation quantity acquisition module and a communication module, wherein each wheel hub of a vehicle to be detected is provided with an elastic load-bearing part; the deformation quantity acquisition module is used for acquiring deformation quantity information of the elastic bearing part when the vehicle to be tested bears the cargo; the communication module is used for sending the deformation amount information to the calculation module, so that the calculation module calculates the actual load capacity of the vehicle to be measured according to the deformation amount information. According to the technical scheme, the elastic load-bearing part is arranged on the hub of the vehicle to be tested, so that a dynamic vertical load model is established on the vehicle to be tested, and the deformation quantity information of the elastic load-bearing part is detected through the deformation quantity acquisition module, so that the actual load quantity of the vehicle to be tested is calculated. The elastic bearing part is simple in structure and easy to install, and can adapt to different detection environments, so that the reliability of the automobile load detection device is improved.

Description

Automobile load detection device, system and method
Technical Field
The invention relates to the technical field of automobile load measurement, in particular to an automobile load detection device, an automobile load detection system and an automobile load detection method.
Background
The existing laws and regulations already restrict the overload phenomenon and the over-standard phenomenon of axle load of automobiles to ensure the safety of road driving. When detecting whether the vehicle has the overload phenomenon and the axle load exceeding phenomenon, the static weighing mode is usually adopted for detection, for example, the measurement is carried out through a wagon balance or a wheel load instrument, the static weighing mode cannot detect whether the vehicle has the overload phenomenon and the axle load exceeding phenomenon in real time, and the comprehensive supervision cannot be realized.
In the prior art, dynamic weighing of an automobile is usually realized by adopting a laser or ultrasonic mode, however, detection of a device adopting laser or ultrasonic is complex and the space required by installation is large, so that the requirement on the application range of the device automobile is severe, the requirement on the environment for generation and reception of ultrasonic is high, normal operation of the device cannot be guaranteed under the severe environment, and the reliability of equipment is reduced.
Disclosure of Invention
The invention mainly aims to provide a device, a system and a method for detecting automobile load, and aims to solve the technical problem that detection equipment is low in reliability when an automobile is dynamically weighed in the prior art. In order to achieve the purpose, the invention provides an automobile load detection device which comprises an elastic load-bearing part, a deformation quantity acquisition module and a communication module, wherein each wheel hub of a vehicle to be detected is provided with one elastic load-bearing part; the deformation quantity acquisition module is used for acquiring deformation quantity information of the elastic bearing part when the vehicle to be tested bears the cargos; the communication module is used for sending the deformation amount information to a calculation module so that the calculation module can calculate the actual load capacity of the vehicle to be measured according to the deformation amount information.
Optionally, the deformation amount acquisition module comprises a stay wire displacement sensor and a deformation amount calculation unit, and the stay wire displacement sensor is used for acquiring the deformation amount length of the elastic bearing part; the deformation quantity calculating unit is used for calculating the deformation quantity information according to the elastic coefficient function of the elastic bearing part, the deformation quantity length and the preset deformation quantity length.
Optionally, each of the elastic load-bearing members is connected to one of the deformation amount collecting modules.
In addition, in order to solve the above problems, the present invention further provides an automobile load detection system, which includes an elastic load-bearing member, a deformation amount acquisition module, a communication module, and a calculation module, wherein each wheel hub of a vehicle to be detected is provided with one elastic load-bearing member; the deformation quantity acquisition module is used for acquiring deformation quantity information of the elastic bearing part when the vehicle to be tested bears the cargos; the communication module is used for sending the deformation information to the calculation module; the calculation module is used for receiving the deformation information sent by the communication module and calculating the actual load capacity of the vehicle to be measured according to the deformation information.
Optionally, the calculation module includes a hub calculation unit and a load calculation unit, and the hub calculation unit is configured to calculate a hub load of a hub of the vehicle to be measured according to the deformation amount information, and is further configured to calculate a current load of the vehicle to be measured according to the hub load; the load calculation unit is used for calculating the actual load capacity of the vehicle to be measured according to the current load capacity of the vehicle to be measured and the preset load capacity of the vehicle to be measured.
Optionally, the automobile load detection system further comprises an alarm module and a controller, the controller is electrically connected with the alarm module and the calculation module, and the controller is further configured to receive the load capacity of the wheel hub; when the load capacity of the hub is larger than the preset load capacity of the hub, the controller controls the alarm module to give an alarm.
Optionally, the controller is further configured to receive the actual load amount, and control the alarm module to send an alarm when the actual load amount is greater than a preset load amount.
In addition, in order to solve the above problems, the present invention further provides an automobile load detection method, including the steps of:
acquiring deformation information of the elastic load-bearing part;
calculating the actual load capacity of the vehicle to be measured according to the deformation information and a preset calculation mode
Optionally, the step of obtaining the deformation amount information of the elastic load-bearing member specifically includes:
obtaining the deformation length of the elastic load-bearing part;
and calculating the deformation information according to the elastic coefficient function of the elastic load-bearing part, the deformation length and the preset deformation length.
Optionally, the step of calculating the actual load capacity of the vehicle to be measured according to the deformation amount information specifically includes:
calculating the hub load capacity of the hub of the vehicle to be tested according to the deformation information, and calculating the current load capacity of the vehicle to be tested according to the hub load capacity;
and calculating the actual load capacity of the vehicle to be tested according to the current load capacity of the vehicle to be tested and the preset load capacity of the vehicle to be tested.
According to the technical scheme, the elastic bearing part is arranged on the hub of the vehicle to be tested, so that a dynamic vertical load model is established on the vehicle to be tested, and deformation quantity information of the elastic bearing part is detected through the deformation quantity acquisition module, so that the actual load quantity of the vehicle to be tested is calculated. The elastic bearing part is simple in structure and easy to install, and can adapt to different detection environments, so that the reliability of the automobile load detection device is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a vehicle load detecting apparatus according to the present invention;
FIG. 2 is a schematic structural diagram of a vehicle load detection system according to the present invention;
FIG. 3 is a schematic flow chart of a first embodiment of the method for detecting a load of a vehicle according to the present invention;
FIG. 4 is a schematic flow chart of a second embodiment of the method for detecting a load of a vehicle according to the present invention;
FIG. 5 is a schematic flow chart of a third embodiment of the method for detecting a load of a vehicle according to the present invention;
FIG. 6 is a diagram showing a ratio of elastic characteristics of the elastic load bearing member in the automobile load detecting device of the present invention.
The reference numbers illustrate:
reference numerals Name (R) Reference numerals Name (R)
10 Deformation quantity acquisition module 11 Deformation amount calculating unit
12 Stay wire displacement sensor 20 Communication module
30 Elastic bearing part 40 Computing module
41 Hub computing unit 42 Load calculation unit
50 Controller 60 Alarm module
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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 invention provides an automobile load detection device, please refer to fig. 1, which comprises an elastic load-bearing part 30, a deformation quantity acquisition module 10 and a communication module 20, wherein each wheel hub of a vehicle to be detected is provided with one elastic load-bearing part 30; the deformation quantity acquisition module 10 is used for acquiring deformation quantity information of the elastic load-bearing part 30 when the vehicle to be tested bears the cargo; the communication module 20 is configured to send the deformation amount information to the calculation module 40, so that the calculation module 40 calculates the actual load amount of the vehicle to be tested according to the deformation amount information. The communication module 20 is used for realizing communication connection between the deformation quantity acquisition module 10 and the calculation module 40. The calculation module 40 can be arranged on the vehicle to be measured, and the communication module 20 is in communication connection with the calculation module 40 in a wired or wireless manner so as to send the deformation amount information to the calculation module 40 for calculation; the communication module 20 uploads the data of the actual load of the vehicle to be tested, which is obtained by the calculation module 40, to the cloud for storage in a wireless communication manner, so as to monitor whether the vehicle to be tested is overloaded.
In addition, the calculation module 40 can be arranged at the cloud, the communication module 20 is in communication connection with the calculation module 40 in a wireless mode so as to send the deformation amount information to the calculation module 40 for calculation, and the calculation module 40 directly stores the obtained data of the actual load capacity of the vehicle to be measured at the cloud.
The elastic load-bearing member 30 may be a suspension elastic element on the vehicle to be tested, or may be an elastic member additionally disposed on a hub of the vehicle to be tested, such as a linear spring or a compound spring. It will be understood by those skilled in the art that the configuration of the automotive load detection device illustrated in fig. 1 is not intended to be limiting and may include more or fewer components than those illustrated, or some components in combination, or a different arrangement of components.
According to the technical scheme, the elastic bearing part 30 is arranged on the hub of the vehicle to be tested, so that a dynamic vertical load model is established on the vehicle to be tested, and the deformation quantity information of the elastic bearing part 30 is detected through the deformation quantity acquisition module 10, so that the actual load quantity of the vehicle to be tested is calculated. The elastic bearing part 30 is simple in structure and easy to install, and can adapt to different detection environments, so that the reliability of the automobile load detection device is improved.
Specifically, the deformation amount acquisition module 10 includes a pull wire displacement sensor 12 and a deformation amount calculation unit 11, where the pull wire displacement sensor 12 is used to obtain the length of the deformation amount of the elastic bearing member 30; the deformation amount calculating unit 11 is configured to calculate the deformation amount information according to the elastic coefficient function of the elastic load-bearing member 30, the deformation amount length, and a preset deformation amount length.
In this embodiment, the stay wire displacement sensor 12 may be mounted on a housing of the vehicle to be tested through a bracket, and a measuring end of the stay wire displacement sensor 12 is connected to the elastic load-bearing member 30, when the elastic load-bearing member 30 deforms, the measuring end of the stay wire displacement sensor 12 is driven to move, and the deformation amount information of the elastic load-bearing member 30 is measured by the stay wire displacement sensor 12 according to the movement size.
In practical applications, since the types and specifications of the elastic load-bearing members on the market are different, and the elastic characteristics thereof are also different, referring to fig. 6, for the known type of the elastic load-bearing member 30, the deformation △ X calibrated by experiments, that is, the mapping relationship F ═ F (△ X) between the deformation length and the load F of the elastic load-bearing member 30, that is, the elastic coefficient function, can be used to calculate the load F on the elastic load-bearing member 30 through the elastic coefficient function, it should be noted that the deformation length △ X is the difference between the reading H of the pull wire displacement sensor 12 and the preset deformation length C, that is, △ X ═ H-C, where the preset deformation length C can be calculated through the above formula, and the preset deformation length C is a constant.
Specifically, each elastic load-bearing member 30 is connected to one deformation quantity collecting module 10. Each deformation quantity acquisition module 10 correspondingly measures one elastic load-bearing part, so that the wheel hub load of each wheel hub on the vehicle to be detected is separately acquired, the actual load of the vehicle to be detected is calculated through the wheel hub load on each wheel hub, and the detection precision of the automobile load detection device is improved.
In addition, in order to solve the above problems, the present invention further provides an automobile load detection system, please refer to fig. 2, the automobile load detection system includes an elastic load-bearing member 30, a deformation amount acquisition module 10, a communication module 20 and a calculation module 40, wherein each wheel hub of a vehicle to be detected is provided with one elastic load-bearing member 30; the deformation quantity acquisition module 10 is used for acquiring deformation quantity information of the elastic load-bearing part 30 when the vehicle to be tested bears the cargo; the communication module 20 is configured to send the deformation amount information to the calculation module 40; the calculating module 40 is configured to receive the deformation amount information sent by the communication module 20, and calculate an actual load capacity of the vehicle to be measured according to the deformation amount information.
The communication module 20 is used for realizing communication connection between the deformation quantity acquisition module 10 and the calculation module 40. The calculation module 40 can be arranged on the vehicle to be measured, and the communication module 20 is in communication connection with the calculation module 40 in a wired or wireless manner so as to send the deformation amount information to the calculation module 40 for calculation; the communication module 20 uploads the data of the actual load of the vehicle to be tested, which is obtained by the calculation module 40, to the cloud for storage in a wireless communication manner, so as to monitor whether the vehicle to be tested is overloaded.
In addition, the calculation module 40 can be arranged at the cloud, the communication module 20 is in communication connection with the calculation module 40 in a wireless mode so as to send the deformation amount information to the calculation module 40 for calculation, and the calculation module 40 directly stores the obtained data of the actual load capacity of the vehicle to be measured at the cloud.
The elastic load-bearing member 30 may be a suspension elastic element on the vehicle to be tested, or may be an elastic member additionally disposed on a hub of the vehicle to be tested, such as a linear spring or a compound spring. It will be understood by those skilled in the art that the configuration of the automotive load detection device illustrated in fig. 1 is not intended to be limiting and may include more or fewer components than those illustrated, or some components in combination, or a different arrangement of components.
According to the technical scheme, the elastic bearing part 30 is arranged on the hub of the vehicle to be tested, so that a dynamic vertical load model is established on the vehicle to be tested, and the deformation quantity information of the elastic bearing part 30 is detected through the deformation quantity acquisition module 10, so that the actual load quantity of the vehicle to be tested is calculated. The elastic bearing part 30 is simple in structure and easy to install, and can adapt to different detection environments, so that the reliability of the automobile load detection device is improved.
Specifically, the calculating module 40 includes a hub calculating unit 41 and a load calculating unit 42, where the hub calculating unit 41 is configured to calculate a hub load of the hub of the vehicle to be measured according to the deformation amount information, and is further configured to calculate a current load of the vehicle to be measured according to the hub load; the load calculating unit 42 is configured to calculate an actual load of the vehicle to be measured according to the current load of the vehicle to be measured and a preset load of the vehicle to be measured.
In this embodiment, the hub calculating unit 41 is configured to calculate the hub load, and as can be seen from the above, the load F on the elastic load bearing member 30, that is, the hub load, can be calculated by the elastic coefficient function, the deformation length and the preset deformation length, and the specific calculation formula is F (△ X) F (H-C), where F (△ X) is the elastic coefficient function, H is the reading of the cable displacement sensor 12, C is the preset deformation length, and △ X is the deformation lengthThe calculation precision of 0 is that the hub load of each hub on the vehicle to be measured is measured respectively, and then the current load of the vehicle to be measured is calculated through the hub load, in the embodiment, the vehicle to be measured takes a four-wheel vehicle as an example, and the hub loads on a left front wheel, a right front wheel, a left rear wheel and a right rear wheel are respectively set to be F1、F2、F3And F4Setting the current load capacity of the vehicle to be measured as MnThen the current load capacity M of the vehicle to be testedn＝F1+F2+F3+F4。
After the hub calculating unit 41 calculates the current load capacity of the vehicle to be measured, the current load capacity of the vehicle to be measured is sent to the load calculating unit 42, and the load calculating unit 42 is used for calculating the actual load capacity of the vehicle to be measured. Since the vehicle to be tested has a certain weight and also has a certain load when the vehicle to be tested is idle, that is, the preset load capacity of the vehicle to be tested, in this embodiment, the preset load capacity of the vehicle to be tested is set to be M0If the actual load capacity of the vehicle to be tested is M, the actual load capacity of the vehicle to be tested is M ═ Mn-M0. And the following formula can be derived according to the above content:
Figure BDA0002301469280000071
Figure BDA0002301469280000072
wherein:
m is the actual load capacity of the vehicle to be measured;
△X1the length of the deformation of the elastic load-bearing part 30 on the left front wheel of the vehicle to be tested;
△X2the deformation amount of the elastic load-bearing member 30 on the right front wheel of the vehicle to be measured;
△X3the shape of the elastic load-bearing member 30 on the left rear wheel of the vehicle to be testedA variable length;
△X4the deformation amount of the elastic bearing part 30 on the right rear wheel of the vehicle to be tested is the length;
g is the acceleration of gravity;
H1reading of the stay wire displacement sensor 12 on the left front wheel of the vehicle to be measured;
H2reading of the stay wire displacement sensor 12 on the right front wheel of the vehicle to be measured;
H3reading of the stay wire displacement sensor 12 on the left rear wheel of the vehicle to be measured;
H4reading of the stay wire displacement sensor 12 on the right rear wheel of the vehicle to be tested;
C1the preset deformation quantity length of the stay wire displacement sensor 12 on the left front wheel of the vehicle to be measured;
C2the preset deformation quantity length of the stay wire displacement sensor 12 on the right front wheel of the vehicle to be tested;
C3the preset deformation length of the stay wire displacement sensor 12 on the left rear wheel of the vehicle to be tested;
C4and calculating the actual load capacity M of the vehicle to be tested, namely the actual weight of the goods loaded on the vehicle to be tested through the formula and the variables for the preset deformation length of the stay wire displacement sensor 12 on the right rear wheel of the vehicle to be tested.
Further, the automobile load detection system further comprises an alarm module 60 and a controller 50, the controller 50 is electrically connected with the alarm module 60 and the calculation module 40, and the controller 50 is further used for receiving the hub load capacity; when the hub load amount is greater than a preset hub load amount, the controller 50 controls the alarm module 60 to send an alarm. In practical application, because goods on the vehicle to be tested are placed unevenly, the load capacity on a certain hub is high, whether the load capacity of the hub is greater than the preset load capacity of the hub is judged, when the load capacity of the hub is greater than the preset load capacity of the hub, the load capacity on the hub exceeds the standard is indicated, the controller 50 controls the alarm module 60 to give an alarm to prompt a driver to adjust in time, and tire burst or other accidents of the vehicle to be tested in the driving process are avoided.
In addition, in this embodiment, a combined calculation manner may also be used, for example, to add the hub load of the left front wheel and the hub load of the right front wheel on the vehicle to be tested, so as to obtain the front axle load on the front axle of the vehicle to be tested, and when the front axle load is greater than a preset front axle load, the controller 50 controls the alarm module 60 to send an alarm to remind a driver to adjust the position of the goods on the vehicle to be tested to avoid overloading the front axle. Similarly, the rear axle load of the vehicle to be tested can be measured according to the method to avoid the overload of the rear axle.
Further, the controller 50 is further configured to receive the actual load amount, and control the alarm module to send an alarm when the actual load amount is greater than a preset load amount. In this embodiment, it may also be determined whether the actual load capacity is greater than the preset load capacity, where the preset load capacity is a rated load capacity of the vehicle to be tested, and when the actual load capacity is greater than the preset load capacity, it indicates that the vehicle to be tested is in an overload state, and the controller 50 controls the alarm module 60 to send an alarm to remind a driver to adjust the number of goods on the vehicle to be tested to avoid overload, so as to implement monitoring whether the vehicle to be tested is overloaded.
Preferably, the vehicle to be tested can obtain the running speed V of the vehicle to be tested through a vehicle speed sensor, the acceleration a of the vehicle to be tested can be obtained by deriving the speed V, and the change condition of the actual load capacity of the vehicle to be tested is monitored in real time under different speed and acceleration working conditions so as to be used as a later research data source.
In addition, to solve the above problems, the present invention further provides a method for detecting an automobile load, please refer to fig. 3, which is a schematic flow diagram of a first embodiment of the method for detecting an automobile load according to the present invention, and the method for detecting an automobile load includes the following steps:
step S10: acquiring deformation information of the elastic load-bearing part;
step S20: and calculating the actual load capacity of the vehicle to be measured according to the deformation information and a preset calculation mode.
The elastic load-bearing member 30 may be a suspension elastic element on the vehicle to be tested, or may be an elastic member additionally disposed on a hub of the vehicle to be tested, such as a linear spring or a compound spring. Detecting the deformation information of the elastic bearing part 30 through a deformation amount acquisition module 10, and communicating and connecting the communication module 20 and the calculation module 40 in a wired or wireless manner to send the deformation information to the calculation module 40 for calculation; the communication module 20 uploads the data of the actual load of the vehicle to be tested, which is obtained by the calculation module 40, to the cloud for storage in a wireless communication manner, so as to monitor whether the vehicle to be tested is overloaded.
In addition, the calculation module 40 can be arranged at the cloud, the communication module 20 is in communication connection with the calculation module 40 in a wireless mode so as to send the deformation amount information to the calculation module 40 for calculation, and the calculation module 40 directly stores the obtained data of the actual load capacity of the vehicle to be measured at the cloud.
According to the technical scheme, the elastic bearing part 30 is arranged on the hub of the vehicle to be tested, so that a dynamic vertical load model is established on the vehicle to be tested, and the deformation quantity information of the elastic bearing part 30 is detected through the deformation quantity acquisition module 10, so that the actual load quantity of the vehicle to be tested is calculated. The elastic bearing part 30 is simple in structure and easy to install, and can adapt to different detection environments, so that the reliability of the automobile load detection device is improved.
Further, referring to fig. 4, fig. 4 is a schematic flow chart of a second embodiment of the method for detecting an automobile load according to the first embodiment of the present invention, where the step S10 specifically includes:
step S11: obtaining the deformation length of the elastic load-bearing part;
step S12: and calculating the deformation information according to the elastic coefficient function of the elastic load-bearing part, the deformation length and the preset deformation length.
The process of measuring the length of the preset deformation quantity is specifically that the length of the preset deformation quantity is set to be C, the reading H of the displacement sensor 12 of the pull wire is obtained when the vehicle is in idle load, and the deformation quantity △ M of the elastic bearing member 30 when the vehicle is in idle load is detected, and the length of the no-load deformation quantity is obtained through an actual measurement formula △ M, wherein the length of the no-load deformation quantity is obtained through a formula H- △.
In practical applications, since the types and specifications of the elastic load-bearing members on the market are different, and the elastic characteristics thereof are also different, referring to fig. 6, for the known type of the elastic load-bearing member 30, the deformation △ X calibrated by experiments, that is, the mapping relationship F ═ F (△ X) between the deformation length and the load F of the elastic load-bearing member 30, that is, the elastic coefficient function, can be used to calculate the load F on the elastic load-bearing member 30 through the elastic coefficient function, it should be noted that the deformation length △ X is the difference between the reading H of the pull wire displacement sensor 12 and the preset deformation length C, that is, △ X ═ H-C, where the preset deformation length C can be calculated through the above formula, and the preset deformation length C is a constant.
Further, referring to fig. 5, fig. 5 is a schematic flow chart of a third embodiment of the method for detecting an automobile load according to the first embodiment of the present invention, where the step S20 specifically includes:
step S21: calculating the hub load capacity of the hub of the vehicle to be tested according to the deformation information, and calculating the current load capacity of the vehicle to be tested according to the hub load capacity;
step S22: and calculating the actual load capacity of the vehicle to be tested according to the current load capacity of the vehicle to be tested and the preset load capacity of the vehicle to be tested.
In this embodiment, the hub load amount may be calculated by the hub calculating unit 41, and as can be seen from the above, the load amount F on the elastic load bearing member 30, that is, the hub load amount, may be calculated by the elastic coefficient function, the deformation amount length and the preset deformation amount length, and the specific calculation formula is that F ═ F (△ X) ═ F (H-C), where F (△ X) is the elastic coefficient function, H is the reading of the stay wire displacement sensor 12, C is the preset deformation amount length, and △ X is the deformation amount length1、F2、F3And F4Setting the current load capacity of the vehicle to be measured as MnThen the current load capacity M of the vehicle to be testedn＝F1+F2+F3+F4。
After the hub calculating unit 41 calculates the current load capacity of the vehicle to be measured, the current load capacity of the vehicle to be measured is sent to the load calculating unit 42, and the load calculating unit 42 is used for calculating the actual load capacity of the vehicle to be measured. Due to the fact thatThe vehicle to be tested has a certain weight and also has a certain load when the vehicle to be tested is in idle load, that is, the preset load capacity of the vehicle to be tested is set to be M in this embodiment0If the actual load capacity of the vehicle to be tested is M, the actual load capacity of the vehicle to be tested is M ═ Mn-M0. And the following formula can be derived according to the above content:
Figure BDA0002301469280000111
Figure BDA0002301469280000112
wherein:
m is the actual load capacity of the vehicle to be measured;
△X1the length of the deformation of the elastic load-bearing part 30 on the left front wheel of the vehicle to be tested;
△X2the deformation amount of the elastic load-bearing member 30 on the right front wheel of the vehicle to be measured;
△X3the deformation amount of the elastic load-bearing part 30 on the left rear wheel of the vehicle to be tested is the length;
△X4the deformation amount of the elastic bearing part 30 on the right rear wheel of the vehicle to be tested is the length;
g is the acceleration of gravity;
H1reading of the stay wire displacement sensor 12 on the left front wheel of the vehicle to be measured;
H2reading of the stay wire displacement sensor 12 on the right front wheel of the vehicle to be measured;
H3reading of the stay wire displacement sensor 12 on the left rear wheel of the vehicle to be measured;
H4reading of the stay wire displacement sensor 12 on the right rear wheel of the vehicle to be tested;
C1the preset deformation of the stay wire displacement sensor 12 on the left front wheel of the vehicle to be testedMeasuring length;
C2the preset deformation quantity length of the stay wire displacement sensor 12 on the right front wheel of the vehicle to be tested;
C3the preset deformation length of the stay wire displacement sensor 12 on the left rear wheel of the vehicle to be tested;
C4and calculating the actual load capacity M of the vehicle to be tested, namely the actual weight of the goods loaded on the vehicle to be tested through the formula and the variables for the preset deformation length of the stay wire displacement sensor 12 on the right rear wheel of the vehicle to be tested.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. An automobile load detection device, characterized in that the automobile load detection system comprises:
each wheel hub of the vehicle to be tested is provided with one elastic load-bearing part;
the deformation quantity acquisition module is used for acquiring deformation quantity information of the elastic bearing part when the vehicle to be tested bears the cargos;
and the communication module is used for sending the deformation amount information to the calculation module so that the calculation module calculates the actual load capacity of the vehicle to be measured according to the deformation amount information.
2. The automotive load detecting device according to claim 1, wherein the deformation amount acquiring module includes:
the stay wire displacement sensor is used for acquiring the deformation quantity length of the elastic bearing part;
and the deformation quantity calculating unit is used for calculating the deformation quantity information according to the elastic coefficient function of the elastic bearing part, the deformation quantity length and the preset deformation quantity length.
3. The automotive load detecting device of claim 1, wherein each of the elastic load bearing members is connected to one of the deformation amount acquiring modules.
4. An automotive load detection system, comprising:
each wheel hub of the vehicle to be tested is provided with one elastic load-bearing part;
the deformation quantity acquisition module is used for acquiring deformation quantity information of the elastic bearing part when the vehicle to be tested bears the cargos;
the communication module is used for sending the deformation information to the calculation module, and the calculation module is used for receiving the deformation information sent by the communication module and calculating the actual load capacity of the vehicle to be measured according to the deformation information.
5. The automotive load detection system of claim 4, wherein the calculation module comprises:
the hub calculation unit is used for calculating the hub load of the hub of the vehicle to be measured according to the deformation information and calculating the current load of the vehicle to be measured according to the hub load;
and the load calculation unit is used for calculating the actual load capacity of the vehicle to be measured according to the current load capacity of the vehicle to be measured and the preset load capacity of the vehicle to be measured.
6. The vehicle load detection system of claim 4, further comprising:
an alarm module;
the controller is electrically connected with the alarm module and the calculation module and is used for receiving the load capacity of the hub;
when the load capacity of the hub is larger than the preset load capacity of the hub, the controller controls the alarm module to give an alarm.
7. The automobile load detection system of claim 6, wherein the controller is further configured to receive the actual load amount, and control the alarm module to issue an alarm when the actual load amount is greater than a preset load amount.
8. An automobile load detection method is characterized by comprising the following steps:
acquiring deformation information of the elastic load-bearing part;
and calculating the actual load capacity of the vehicle to be measured according to the deformation information and a preset calculation mode.
9. The method according to claim 8, wherein the step of obtaining the deformation information of the elastic load-bearing member comprises:
obtaining the deformation length of the elastic load-bearing part;
and calculating the deformation information according to the elastic coefficient function of the elastic load-bearing part, the deformation length and the preset deformation length.
10. The automobile load detection method according to claim 8, wherein the step of calculating the actual load capacity of the vehicle to be measured according to the deformation amount information specifically includes:
calculating the hub load capacity of the hub of the vehicle to be tested according to the deformation information, and calculating the current load capacity of the vehicle to be tested according to the hub load capacity;
and calculating the actual load capacity of the vehicle to be tested according to the current load capacity of the vehicle to be tested and the preset load capacity of the vehicle to be tested.
CN201911231911.4A 2019-12-03 2019-12-03 Automobile load detection device, system and method Pending CN110901653A (en)

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