CN111551239A - Vehicle load detection method and system in inclined state and vehicle-mounted terminal - Google Patents
Vehicle load detection method and system in inclined state and vehicle-mounted terminal Download PDFInfo
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- CN111551239A CN111551239A CN202010434704.5A CN202010434704A CN111551239A CN 111551239 A CN111551239 A CN 111551239A CN 202010434704 A CN202010434704 A CN 202010434704A CN 111551239 A CN111551239 A CN 111551239A
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- vehicle
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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
- G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
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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
- G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
- G01G19/12—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles having electrical weight-sensitive devices
-
- 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
-
- 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
- G01G3/14—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 measuring variations of electrical resistance
- G01G3/142—Circuits specially adapted therefor
- G01G3/147—Circuits specially adapted therefor involving digital counting
Abstract
A vehicle load detection method in an inclined state, comprising: acquiring the distance variation delta L between the frame and the rear axle, calculating the load of the vehicle through a load sensor based on the delta L, and correcting the delta L before calculating the load of the vehicle: calculating a vehicle inclination angle alpha; and correcting the delta L into delta L/cos alpha. According to the invention, the delta L is corrected through the inclination angle of the vehicle, and the load of the vehicle is automatically calculated through the load sensor, so that the detection accuracy is improved, manual intervention is not required, and the anti-interference capability is strong.
Description
Technical Field
The invention relates to the technical field of vehicle load detection, in particular to a method and a system for detecting vehicle load in an inclined state and a vehicle-mounted terminal.
Background
Nowadays, the technology level and the transportation industry are developed at a high speed, and the establishment of an intelligent transportation management system becomes a necessary trend for the development of the modern transportation industry. For commercial vehicles, the real-time monitoring of vehicle load information is beneficial to controlling overload and overrun, standardizing road transportation order, and greatly relieving social and environmental problems such as frequent traffic accidents, road damage, environmental pollution and the like caused by vehicle overload. Meanwhile, the vehicle transportation efficiency can be improved, and the load change in the transportation process can be monitored.
The load measuring and calculating method most commonly used in the industry at present is an external load sensor, as shown in fig. 3, the load sensor is installed between the frame 2 and the rear axle 3, when the vehicle is unloaded, the distance between the frame 2 and the rear axle 3 is L1, after a certain amount of goods is loaded, the distance between the frame 2 and the rear axle 3 is shortened to L2, and the load weight of the vehicle is automatically measured and calculated by collecting the distance variation Δ L between the frame and the rear axle and the load sensor. In general, the vehicle load is positively correlated with the magnitude of Δ L.
However, due to the complexity of the vehicle operating conditions and road conditions, the vehicle is not always in a horizontal state during the driving process, and the vehicle body is also inclined (uphill and downhill, turning, etc.), but the vehicle frame is of a rigid structure, so that when the vehicle body is inclined, as shown in fig. 4, the load bearing of the vehicle frame 2 is only a component of the load capacity in the vertical direction of the upper surface of the vehicle frame 2, and at this time, the traditional load measuring and calculating system only collects data according to the vertical distance between the vehicle frame 2 and the rear axle 3, so that the load data is inaccurate.
In a conventional load estimation system, Δ L is related to the load as shown in table 1. When the load of the vehicle is 100kg, the corresponding theory delta L is 1mm, and in the actual climbing process, because the vehicle has an inclination angle, the force actually acting on the sensor is only the component of the load in the vertical direction of the upper surface of the vehicle frame, so that the actually measured deformation amount in the climbing process is 0.93mm, a measurement error is generated, and the error is increased along with the increasing load.
TABLE 1
Disclosure of Invention
In view of the above, the present invention provides a method and system for detecting a vehicle load in an inclined state, and an in-vehicle terminal.
In order to solve the technical problems, the invention adopts the following technical scheme:
a vehicle load detection method in an inclined state, comprising: acquiring the distance variation delta L between the frame and the rear axle, calculating the load of the vehicle through a load sensor based on the delta L, and correcting the delta L before calculating the load of the vehicle:
calculating a vehicle inclination angle alpha;
and correcting the delta L into delta L/cos alpha.
The vehicle inclination angle α is calculated by an acceleration sensor or a gyroscope or an angle sensor.
And acquiring the distance variable quantity delta L between the frame and the rear axle through a distance change detection module.
The distance change detection module is arranged in the load sensor or is an external distance change detection module, and the external distance change detection module adopts a displacement sensor.
The scheme also relates to a vehicle load detection system in an inclined state, which comprises a storage module, wherein a plurality of instructions are stored in the storage module, and the instructions are loaded and executed by a processor:
collecting the distance variable quantity delta L between the frame and the rear axle;
correcting the Δ L: calculating a vehicle inclination angle alpha, and correcting the delta L into delta L/cos alpha;
the vehicle load is calculated by a load sensor based on the Δ L.
The vehicle inclination angle α is calculated by an acceleration sensor or a gyroscope or an angle sensor.
And acquiring the distance variable quantity delta L between the frame and the rear axle through a distance change detection module.
The distance change detection module is arranged in the load sensor or is an external distance change detection module, and the external distance change detection module adopts a displacement sensor.
The scheme also relates to a vehicle-mounted terminal which is provided with the vehicle load detection system.
According to the invention, the delta L is corrected through the inclination angle of the vehicle, and the load of the vehicle is automatically calculated through the load sensor, so that the detection accuracy is improved, manual intervention is not required, and the anti-interference capability is strong.
Drawings
The invention is described in detail below with reference to the following figures and detailed description:
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic diagram of the present invention for correcting Δ L;
FIG. 3 is a schematic spacing between the frame and the rear axle;
fig. 4 is a schematic view of the load of the vehicle in a state where the vehicle body is inclined.
Detailed Description
As shown in fig. 1, a method for detecting a load of a vehicle in an inclined state includes:
s101, collecting the distance variable quantity delta L between the frame and the rear axle.
S102, correcting the delta L: the vehicle inclination angle alpha is calculated, and Δ L is corrected to Δ L/cos α.
As shown in fig. 2, in the inclined state of the vehicle, Δ L acquired in step S101 is actually a vertical component of the actual distance variation, and Δ L may be corrected by the above formula through force analysis and vector decomposition, so as to obtain the actual distance variation.
At S103, the vehicle load is calculated by the load sensor based on Δ L (corrected Δ L).
Wherein, the load sensor is an existing sensor, and can automatically calculate the load of the vehicle through delta L.
According to the invention, the delta L is corrected through the inclination angle of the vehicle, and the load of the vehicle is automatically calculated through the load sensor, so that the detection accuracy is improved, manual intervention is not required, and the anti-interference capability is strong.
In this embodiment, step S101 acquires a distance variation Δ L between the frame and the rear axle through the distance variation detection module.
Wherein, the load sensor is arranged in to the interval change detection module in, load sensor itself just can detect the interval change promptly, perhaps load sensor itself does not possess the interval and changes and carry out under the condition of detectability, and interval change detection module can adopt external detection module, like displacement sensor, including resistance-type and stay-supported.
In the present embodiment, step S102 calculates the vehicle inclination angle α by an acceleration sensor (three axes) or a gyroscope or an angle sensor.
The acceleration sensor can calculate the vehicle inclination angle alpha through the following formula:
As shown in fig. 1, the present invention also relates to a vehicle load detection system in an inclined state, comprising a storage module, wherein a plurality of instructions are stored in the storage module, and the instructions are loaded and executed by a processor:
s101, collecting the distance variable quantity delta L between the frame and the rear axle.
S102, correcting the delta L: the vehicle inclination angle alpha is calculated, and Δ L is corrected to Δ L/cos α.
As shown in fig. 2, in the inclined state of the vehicle, Δ L acquired in step S101 is actually a vertical component of the actual distance variation, and Δ L may be corrected by the above formula through force analysis and vector decomposition, so as to obtain the actual distance variation.
At S103, the vehicle load is calculated by the load sensor based on Δ L (corrected Δ L).
Wherein, the load sensor is an existing sensor, and can automatically calculate the load of the vehicle through delta L.
According to the invention, the delta L is corrected through the inclination angle of the vehicle, and the load of the vehicle is automatically calculated through the load sensor, so that the detection accuracy is improved, manual intervention is not required, and the anti-interference capability is strong.
In this embodiment, step S101 acquires a distance variation Δ L between the frame and the rear axle through the distance variation detection module.
Wherein, the load sensor is arranged in to the interval change detection module in, load sensor itself just can detect the interval change promptly, perhaps load sensor itself does not possess the interval and changes and carry out under the condition of detectability, and interval change detection module can adopt external detection module, like displacement sensor, including resistance-type and stay-supported.
In the present embodiment, step S102 calculates the vehicle inclination angle α by an acceleration sensor (three axes) or a gyroscope or an angle sensor.
The acceleration sensor can calculate the vehicle inclination angle alpha through the following formula:
The invention also relates to a vehicle-mounted terminal which is provided with the vehicle load detection system.
However, those skilled in the art should realize that the above embodiments are illustrative only and not limiting to the present invention, and that changes and modifications to the above described embodiments are intended to fall within the scope of the appended claims, provided they fall within the true spirit of the present invention.
Claims (9)
1. A vehicle load detection method in an inclined state, comprising: collecting the distance variation delta L between the frame and the rear axle, and calculating the load of the vehicle through a load sensor based on the delta L, wherein the method further comprises the following steps of correcting the delta L before calculating the load of the vehicle:
calculating a vehicle inclination angle alpha;
and correcting the delta L into delta L/cos alpha.
2. The method of claim 1, wherein the vehicle inclination angle α is calculated by an acceleration sensor, a gyroscope, or an angle sensor.
3. The method for detecting the vehicle load in the inclined state according to claim 2, wherein the distance change Δ L between the frame and the rear axle is collected by a distance change detection module.
4. The method as claimed in claim 3, wherein the distance variation detecting module is built in the load sensor or is an external distance variation detecting module, and the external distance variation detecting module is a displacement sensor.
5. A vehicle load detection system in an inclined state, comprising a memory module having stored therein a plurality of instructions, the instructions being loaded and executed by a processor:
collecting the distance variable quantity delta L between the frame and the rear axle;
correcting the Δ L: calculating a vehicle inclination angle alpha, and correcting the delta L into delta L/cos alpha;
the vehicle load is calculated by a load sensor based on the Δ L.
6. The system of claim 5, wherein the vehicle tilt angle α is calculated by an acceleration sensor, a gyroscope, or an angle sensor.
7. The system of claim 6, wherein the variation Δ L of the distance between the frame and the rear axle is collected by the distance variation detection module.
8. The system of claim 7, wherein the distance change detection module is built in the load sensor or is an external distance change detection module, and the external distance change detection module is a displacement sensor.
9. A vehicle-mounted terminal characterized by having the vehicle load detection system according to any one of claims 5 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010434704.5A CN111551239A (en) | 2020-05-21 | 2020-05-21 | Vehicle load detection method and system in inclined state and vehicle-mounted terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010434704.5A CN111551239A (en) | 2020-05-21 | 2020-05-21 | Vehicle load detection method and system in inclined state and vehicle-mounted terminal |
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| CN1641323A (en) * | 2004-01-15 | 2005-07-20 | 株式会社小松制作所 | Loaded weight measurement method and loaded weight measurement device for dump truck |
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| CN203366410U (en) * | 2013-06-28 | 2013-12-25 | 郑州森鹏电子技术有限公司 | Novel public transport passenger flow monitoring system |
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| CN106274670A (en) * | 2016-07-25 | 2017-01-04 | 北汽福田汽车股份有限公司 | A kind of vehicle and overload suggestion device |
| CN106679781A (en) * | 2016-12-26 | 2017-05-17 | 重庆大唐科技股份有限公司 | High-precision reliable weighing method and system based on truck plate spring support |
| CN107860449A (en) * | 2017-12-04 | 2018-03-30 | 广州电力机车有限公司 | A kind of dumper weighing system |
| CN110470370A (en) * | 2019-09-24 | 2019-11-19 | 江苏中宏讯达科技有限公司 | A kind of vehicle carrying sensory perceptual system |
| CN111089642A (en) * | 2019-12-31 | 2020-05-01 | 内蒙古广纳信息科技有限公司 | Loading detection device and method for dump truck for strip mine |
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2020
- 2020-05-21 CN CN202010434704.5A patent/CN111551239A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1641323A (en) * | 2004-01-15 | 2005-07-20 | 株式会社小松制作所 | Loaded weight measurement method and loaded weight measurement device for dump truck |
| CN1641324A (en) * | 2004-01-15 | 2005-07-20 | 株式会社小松制作所 | Loaded weight measurement method and loaded weight measurement device for dump truck |
| CN203366410U (en) * | 2013-06-28 | 2013-12-25 | 郑州森鹏电子技术有限公司 | Novel public transport passenger flow monitoring system |
| CN203981255U (en) * | 2014-07-30 | 2014-12-03 | 山西万立科技有限公司 | A kind of vehicle-mounted weighing system |
| CN106274670A (en) * | 2016-07-25 | 2017-01-04 | 北汽福田汽车股份有限公司 | A kind of vehicle and overload suggestion device |
| CN106679781A (en) * | 2016-12-26 | 2017-05-17 | 重庆大唐科技股份有限公司 | High-precision reliable weighing method and system based on truck plate spring support |
| CN107860449A (en) * | 2017-12-04 | 2018-03-30 | 广州电力机车有限公司 | A kind of dumper weighing system |
| CN110470370A (en) * | 2019-09-24 | 2019-11-19 | 江苏中宏讯达科技有限公司 | A kind of vehicle carrying sensory perceptual system |
| CN111089642A (en) * | 2019-12-31 | 2020-05-01 | 内蒙古广纳信息科技有限公司 | Loading detection device and method for dump truck for strip mine |
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Application publication date: 20200818 |
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