CN113984164A - Tonnage detection method and device based on vehicle leaf spring double acceleration sensors - Google Patents
Tonnage detection method and device based on vehicle leaf spring double acceleration sensors Download PDFInfo
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Abstract
The application relates to the technical field of vehicle load, in particular to a tonnage detection method and a tonnage detection device based on a vehicle leaf spring double acceleration sensor, acceleration data when the vehicle leaf spring is deformed are respectively collected by a first acceleration sensor and a second acceleration sensor which are arranged at two ends of the vehicle leaf spring and are transmitted to an algorithm server through a GPS host, the algorithm server determines a coordinate reference based on the acceleration data collected by the first acceleration sensor and the second acceleration sensor, calculates an angle value of the vehicle leaf spring deformed under the coordinate reference, obtains the tonnage value of the current vehicle according to the angle value of the vehicle leaf spring deformed, and avoids the problem of inaccurate load calculation caused by uneven road surface because the angle value of the vehicle leaf spring deformed is obtained on a uniform coordinate reference, thereby promoting the accuracy of tonnage detection.
Description
Technical Field
The application relates to the technical field of vehicle load, in particular to a tonnage detection method and device based on a vehicle leaf spring double acceleration sensor.
Background
Along with the rapid development of logistics transportation, the requirements for real-time measurement and flow direction control of the load of the freight vehicle are more and more, and the accurate measurement of the load value under the complex road condition can be realized for different vehicle types.
In the conventional dynamic measurement of vehicle load, a load sensor is mounted on a vehicle leaf spring to detect the displacement caused by the deformation of the vehicle leaf spring due to the weight change, and then the displacement is converted into voltage output by a related circuit, and the platform calculates the load according to the voltage change. However, the method of calculating the load by installing the load sensor has a short service life on one hand and is easily influenced by the structure of the vehicle body and external factors on the other hand, for example, when the road surface is uneven, the deformation of the two ends of the vehicle leaf spring is inconsistent, that is, the deformation of the vehicle leaf spring cannot be accurately reflected, and the accuracy of load calculation is further influenced.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method and an apparatus for detecting tonnage based on a dual acceleration sensor of a vehicle leaf spring, which improve the accuracy of measuring a load by determining a uniform coordinate reference.
The tonnage detection method based on the vehicle leaf spring double acceleration sensor comprises the following steps:
the method comprises the following steps that a first acceleration sensor and a second acceleration sensor which are arranged at two ends of a vehicle plate spring respectively acquire acceleration data when the vehicle plate spring is deformed;
the GPS host acquires acceleration data acquired by the first acceleration sensor and the second acceleration sensor and transmits the acceleration data to the algorithm server;
and the algorithm server determines a coordinate reference based on the acceleration data acquired by the first acceleration sensor and the second acceleration sensor, calculates an angle value of the deformation of the vehicle plate spring under the coordinate reference, and obtains the tonnage value of the current vehicle according to the angle value of the deformation of the vehicle plate spring.
In some embodiments, the first acceleration sensor and the second acceleration sensor which are installed at two ends of the vehicle plate spring respectively collect acceleration data when the vehicle plate spring is deformed, and the method comprises the following steps:
the method comprises the steps that a first acceleration sensor and a second acceleration sensor which are arranged at two ends of a vehicle plate spring acquire first acceleration data of deformation of the vehicle plate spring when a vehicle is in no-load;
the method comprises the steps that a first acceleration sensor and a second acceleration sensor which are installed at two ends of a vehicle plate spring acquire second acceleration data of deformation of the vehicle plate spring when a vehicle is fully loaded;
and the first acceleration sensor and the second acceleration sensor which are arranged at two ends of the vehicle plate spring acquire third acceleration data of the deformation of the vehicle plate spring when the vehicle is currently loaded.
In some embodiments, the algorithm server determines a coordinate reference based on the acceleration data collected by the first acceleration sensor and the second acceleration sensor, and calculates an angle value of deformation of the vehicle leaf spring under the coordinate reference, including the following steps:
the algorithm server determines a coordinate reference based on first acceleration data acquired by the first acceleration sensor and the second acceleration sensor, and calculates a first angle value of deformation of a vehicle plate spring when the vehicle is in no-load on the coordinate reference;
the algorithm server calculates a second angle value of the deformation of the vehicle plate spring when the vehicle is fully loaded on the coordinate reference based on second acceleration data acquired by the first acceleration sensor and the second acceleration sensor;
and the algorithm server calculates a third angle value of deformation of a vehicle plate spring when the vehicle is currently loaded under the coordinate reference based on third acceleration data acquired by the first acceleration sensor and the second acceleration sensor.
In some embodiments, the algorithm server obtains the current tonnage value of the vehicle according to the angle value of the deformation of the vehicle leaf spring, and the method comprises the following steps:
the algorithm server stores the tonnage value of the vehicle when the vehicle is fully loaded;
and the algorithm server calculates the tonnage value of the current vehicle based on the first angle value, the second angle value, the third angle value and the vehicle tonnage value when the vehicle is fully loaded.
In some embodiments, after the algorithm server obtains the current tonnage value of the vehicle according to the angle value of the deformation of the vehicle leaf spring, the method further comprises the following steps:
the algorithm server divides the tonnage value of the current vehicle into a zero position tonnage value and a non-zero position tonnage value according to the current vehicle speed, wherein the zero position tonnage value is the tonnage value of the current vehicle when the current vehicle speed is zero;
and the algorithm server replaces the non-zero-bit tonnage value with the zero-bit tonnage value and displays the zero-bit tonnage value on the user.
In some embodiments, after the algorithm server obtains the current tonnage value of the vehicle according to the angle value of the deformation of the vehicle leaf spring, the method further comprises the following steps:
and performing mean value smoothing according to the tonnage values of the plurality of current vehicles calculated by the algorithm server to obtain the effective tonnage value of the current vehicle.
The embodiment of the application still provides a tonnage detection device based on vehicle leaf spring dual acceleration sensor, includes:
the acceleration sensor comprises a first acceleration sensor and a second acceleration sensor which are arranged at two ends of a vehicle plate spring and are used for respectively acquiring acceleration data when the vehicle plate spring is deformed;
the GPS host is used for acquiring acceleration data acquired by the first acceleration sensor and the second acceleration sensor and transmitting the acceleration data to the algorithm server;
and the algorithm server is used for determining a coordinate reference based on the acceleration data acquired by the first acceleration sensor and the second acceleration sensor, calculating an angle value of the vehicle plate spring deformed under the coordinate reference, and obtaining the tonnage value of the current vehicle according to the angle value of the vehicle plate spring deformed.
In some embodiments, the detection apparatus further includes a buffer module, configured to divide the tonnage value of the current vehicle into a zero-point tonnage value and a non-zero-point tonnage value according to the current vehicle speed, and replace the non-zero-point tonnage value with the zero-point tonnage value to be displayed to the user, where the zero-point tonnage value is the tonnage value of the current vehicle when the current vehicle speed is zero.
In some embodiments, the detection apparatus further includes a post-processing module configured to perform mean smoothing on the tonnage values of the plurality of current vehicles to obtain a valid tonnage value of the current vehicle.
The application discloses a tonnage detecting method and device based on a vehicle plate spring double acceleration sensor, acceleration data when the vehicle plate spring is deformed are respectively acquired by a first acceleration sensor and a second acceleration sensor which are arranged at two ends of the vehicle plate spring, and transmitted to an algorithm server through a GPS host, the algorithm server determines a coordinate reference based on acceleration data collected by a first acceleration sensor and a second acceleration sensor, and calculates an angle value of the deformation of the vehicle leaf spring under the coordinate reference, the tonnage value of the current vehicle is obtained according to the angle value of the deformation of the vehicle plate spring, and the angle value of the deformation of the vehicle plate spring is obtained on the uniform coordinate reference, therefore, the influence of the deformation inconsistency of the two ends of the vehicle leaf spring is avoided, the problem of inaccurate load calculation caused by uneven road surface can be avoided, and the accuracy of tonnage detection is improved.
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In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a flow chart illustrating a method for tonnage detection provided in an embodiment of the present application;
FIG. 2 is a flow chart illustrating the process of collecting acceleration data when a vehicle leaf spring deforms according to an embodiment of the present application;
FIG. 3 is a flow chart for calculating an angle value of deformation of a vehicle leaf spring according to an embodiment of the present application;
FIG. 4 is a flow chart illustrating a calculation of a tonnage value of a current vehicle according to an embodiment of the present application;
FIG. 5 shows a block diagram of a tonnage detecting device provided by the embodiment of the application.
Detailed Description
In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it should be understood that the drawings in the present application are for illustrative and descriptive purposes only and are not used to limit the scope of protection of the present application. Additionally, it should be understood that the schematic drawings are not necessarily drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of the present application. It should be understood that the operations of the flow diagrams may be performed out of order, and steps without logical context may be performed in reverse order or simultaneously. One skilled in the art, under the guidance of this application, may add one or more other operations to, or remove one or more operations from, the flowchart.
The intelligent vehicle-mounted weighing system can effectively improve the loading rate of the vehicle except avoiding monitoring overload, maximizes the profit of the whole vehicle, ensures the safety of goods and the on-time delivery of goods by enabling a manager to know the dynamic load of the vehicle and the loading and unloading time and place of the goods in real time conveniently, and brings more comfortable and convenient experience for customers by enabling the real-time load of the vehicle and the position information to be clear at a glance. However, the conventional vehicle-mounted weighing mainly adopts a mode of mounting a load sensor on a vehicle body, and the deformation of a vehicle leaf spring can not be accurately reflected due to factors such as uneven ground, so that the tonnage of the vehicle can not be accurately detected. Based on the method, the tonnage detection method and device based on the vehicle plate spring double-acceleration sensor are provided, and the vehicle load is accurately measured by determining the angle value of the deformation of the vehicle plate spring reflected by the unified coordinate reference.
As shown in the attached fig. 1, in an embodiment, a tonnage detection method based on a vehicle leaf spring dual acceleration sensor specifically includes the following steps:
s1, respectively acquiring acceleration data when the vehicle plate spring deforms by a first acceleration sensor and a second acceleration sensor which are installed at two ends of the vehicle plate spring;
s2, acquiring acceleration data acquired by the first acceleration sensor and the second acceleration sensor by the GPS host and transmitting the acceleration data to an algorithm server;
s3, the algorithm server determines a coordinate reference based on the acceleration data collected by the first acceleration sensor and the second acceleration sensor, calculates an angle value of the vehicle plate spring deformed under the coordinate reference, and obtains the current tonnage value of the vehicle according to the angle value of the vehicle plate spring deformed.
In step S1, a three-axis acceleration sensor is used as each of the first acceleration sensor and the second acceleration sensor to obtain three-axis acceleration data, i.e., X-axis acceleration data, Y-axis acceleration data, and Z-axis acceleration data, when the vehicle leaf spring is deformed. The acceleration sensor is a sensor capable of measuring acceleration, and generally comprises a mass, a damper, an elastic element, a sensing element, an adjusting circuit and the like. For calculating the inclination angle of the device with respect to the horizontal plane by measuring the acceleration due to gravity.
In this embodiment, acceleration data of deformation of a vehicle leaf spring when the vehicle is empty, full and currently loaded is acquired by a first acceleration sensor and a second acceleration sensor which are installed at two ends of the vehicle leaf spring respectively, as shown in the attached fig. 2 of the specification, the method specifically includes the following steps:
s101, collecting first acceleration data of deformation of a vehicle plate spring when the vehicle is in no-load by a first acceleration sensor and a second acceleration sensor which are arranged at two ends of the vehicle plate spring;
s102, collecting second acceleration data of deformation of the vehicle plate spring when the vehicle is fully loaded by a first acceleration sensor and a second acceleration sensor which are arranged at two ends of the vehicle plate spring;
s103, collecting third acceleration data of deformation of the vehicle plate spring when the vehicle is loaded currently by the first acceleration sensor and the second acceleration sensor which are installed at two ends of the vehicle plate spring.
In step S101, when the vehicle is unloaded, the acceleration data value collected by the first acceleration sensor is (x)an,yan,zan) The acceleration data value collected by the second acceleration sensor is (x)bn,ybn,zbn)；
In step S102, when the vehicle is fully loaded, the acceleration data value collected by the first acceleration sensor is (x)af,yaf,zaf) The acceleration data value collected by the second acceleration sensor is (x)bf,ybf,zbf)；
In step S103, the current load of the vehicle, the acceleration data value collected by the first acceleration sensor is (x1, y1, z1), and the acceleration data value collected by the second acceleration sensor is (x2, y2, z 2).
In step S2, the GPS host plays a role in forwarding acceleration data, and specifically, the first acceleration sensor and the second acceleration sensor respectively acquire acceleration data when the vehicle leaf spring is deformed and transmit the acceleration data to the GPS host for storage, and then the GPS host transmits the acceleration data when the vehicle leaf spring is deformed and acquired by the first acceleration sensor and the second acceleration sensor respectively to the algorithm server. The GPS host is a part of a conventional intelligent vehicle-mounted weighing system, which is well known to those skilled in the art and will not be described in detail herein.
In step S3, as shown in fig. 3 of the specification, the algorithm server calculates the value of the angle of deformation of the vehicle leaf spring when the vehicle is empty, full and currently loaded by the following steps:
s301, an algorithm server determines a coordinate reference based on first acceleration data acquired by the first acceleration sensor and the second acceleration sensor, and calculates a first angle value of deformation of a vehicle plate spring when a vehicle is unloaded on the coordinate reference;
s302, calculating a second angle value of deformation of a vehicle plate spring in the coordinate reference when the vehicle is fully loaded based on second acceleration data acquired by the first acceleration sensor and the second acceleration sensor by an algorithm server;
and S303, calculating a third angle value of deformation of a vehicle plate spring when the vehicle is currently loaded under the coordinate reference by the algorithm server based on third acceleration data acquired by the first acceleration sensor and the second acceleration sensor.
The unified coordinate reference is determined before calculating the angle value of the deformation of the vehicle plate spring when the vehicle is in no load, full load and current load, and the corresponding angle value is calculated under the same coordinate reference.
In the present application, the coordinate reference is determined by acceleration data acquired when the vehicle is empty, specifically:
dt＝xan*xbn+yan*ybn+zan*zbn
cf＝1.0/(2.0*p0*np)
p1＝cf*(yan*zbn-zan*ybn)
p2＝cf*(zan*xbn-xan*zbn)
p3＝cf*(xan*ybn-yan*xbn)
wherein p is0Scalar coordinates that are quaternions; p is a radical of1A first coordinate of a quaternion vector portion; p is a radical of2A second coordinate of the quaternion vector portion; p is a radical of3The third coordinate of the quaternion vector part, np, dt, cf, is the intermediate parameter, which is an irreplaceable extension of the complex number. If the set of quaternions is considered as a multi-dimensional real space, the quaternion represents a four-dimensional space, and is a two-dimensional space relative to the complex number, which is well known to those skilled in the art and will not be described herein.
Then under this coordinate basis, calculate the COS value of the first angle that the vehicle leaf spring takes place deformation when the vehicle is unloaded earlier:
and then calculating a first angle value by the COS value of the first angle:
mangle＝cos(mu)*180/л
and converting the acceleration data when the vehicle is fully loaded to be larger than the determined coordinate reference to obtain the COS value of the second angle:
saf＝p1*xaf+p2*yaf+p3*zaf
(xat，yat,zat)＝(2*(p0*(xaf*p0-(p2*zaf-p3*yaf))+saf*p1)-xaf,
2*(p0*(yaf*p0-(p2*xaf-p3*zaf))+saf*p2)-yaf,
2*(p0*(zaf*p0-(p2*yaf-p3*xaf))+saf*p3)-zaf,)
(xms,yms,zms)＝(xat*ms/ss,yat*ms/ss,zat*ms/ss)
calculating a second angle value according to the COS value of the second angle:
fangle＝cos(fu)*180/л
and converting the acceleration data of the current vehicle load into the COS value of the third angle under the condition of being larger than the determined coordinate reference:
s1f＝p1*x1+p2*y1+p3*z1
(x1t，y1t,z1t)＝(2*(p0*(x1*p0-(p2*z1-p3*y1))+s1f*p1)-x1,
2*(p0*(y1*p0-(p2*x1-p3*z1))+s1f*p2)-y1,
2*(p0*(Z1*p0-(p2*y1-p3*x1))+s1f*p3)-z1,)
(xns,yns,zns)＝(x1t*ms1/ss1,y1t*ms1/ss1,z1t*ms1/ss1)
calculating a third angle value according to the COS value of the third angle:
nangle＝cos(nu)*180/л
after the angle value of the deformation of the vehicle plate spring when the vehicle is in no load, full load and current load is calculated, as shown in the attached figure 4 of the specification, the tonnage value of the current vehicle is determined through the following steps:
s304, the algorithm server stores the tonnage value of the vehicle when the vehicle is fully loaded;
s305, the algorithm server calculates the tonnage value of the current vehicle based on the first angle value, the second angle value, the third angle value and the tonnage value of the vehicle when the vehicle is fully loaded.
In this embodiment, the tonnage value of the vehicle when the vehicle is fully loaded is ft, so that the tonnage value of the current vehicle is obtained according to the first angle value, the second angle value and the third angle value calculated as above:
nt＝ft/(fangle-mangle)*(nangle-mangle)
further, in order to improve the accuracy of the tonnage value of the current vehicle, the influence of external factors such as the vehicle speed should be eliminated. Specifically, in this example, the algorithm server divides the tonnage value of the current vehicle into a zero position tonnage value and a non-zero position tonnage value according to the current vehicle speed, wherein the zero position tonnage value is the tonnage value of the current vehicle when the current vehicle speed is zero; and the algorithm server replaces the non-zero-bit tonnage value with the zero-bit tonnage value and displays the latest zero-bit tonnage value on the user.
In addition, in order to improve the accuracy of the calculated tonnage value of the current vehicle, the tonnage value of the current vehicle calculated per liter is averaged to obtain an effective tonnage value of the current vehicle. Specifically, in this embodiment, the data of 20 data points is used as a window for smooth calculation, and the tonnage value of the current vehicle at the first point in the window is an average value of the data values of 20 points from the current point to the next point. The mean smoothing is to take the average value of the neighborhood pixels to replace the brightness value of each pixel in a window taking the pixel as the center, and the method is mean smoothing, which is also called mean filtering, and is a technical means known by those skilled in the art and will not be described in detail herein.
Similarly, in other embodiments, the two methods for improving the accuracy of the current tonnage value of the vehicle may be implemented in combination, which are not described herein.
The method for detecting the tonnage based on the double acceleration sensors of the vehicle plate spring, provided by the application, respectively collects acceleration data when the vehicle plate spring is deformed by the acceleration sensors arranged at the two ends of the vehicle plate spring, and transmitted to an algorithm server through a GPS host, the algorithm server determines a coordinate reference based on acceleration data collected by two acceleration sensors and calculates an angle value of the vehicle plate spring deformed under the coordinate reference, the tonnage value of the current vehicle is obtained according to the angle value of the deformation of the vehicle plate spring, and the angle value of the deformation of the vehicle plate spring is obtained on the uniform coordinate reference, so the method is not influenced by the inconsistent deformation of the two ends of the vehicle leaf spring, can avoid the problem of inaccurate load calculation caused by uneven road surface, and the accuracy of measuring the tonnage value can be further improved by mean value smoothing and vehicle speed influence elimination.
Based on the same conception of the invention, the embodiment of the application also provides a tonnage detecting device based on a vehicle leaf spring double acceleration sensor, and as the principle of solving the problems of the device in the embodiment of the application is similar to the tonnage detecting method in the embodiment of the application, the implementation of the device can refer to the implementation of the method, and repeated parts are not repeated.
As shown in the attached figure 5 in the specification, the tonnage detecting device based on the vehicle leaf spring dual acceleration sensor provided by the embodiment of the application comprises:
the acceleration sensor 501 comprises a first acceleration sensor and a second acceleration sensor which are arranged at two ends of a vehicle plate spring and are used for respectively acquiring acceleration data when the vehicle plate spring deforms;
the GPS host 502 is configured to acquire acceleration data acquired by the first acceleration sensor and the second acceleration sensor and transmit the acceleration data to the algorithm server;
and the algorithm server 503 is configured to determine a coordinate reference based on acceleration data acquired by the first acceleration sensor and the second acceleration sensor, calculate an angle value of the vehicle leaf spring deformed under the coordinate reference, and obtain a tonnage value of the current vehicle according to the angle value of the vehicle leaf spring deformed.
In a possible implementation mode, a first acceleration sensor and a second acceleration sensor which are installed at two ends of a vehicle plate spring respectively collect acceleration data when the vehicle plate spring is deformed, and the method comprises the following steps:
the method comprises the steps that a first acceleration sensor and a second acceleration sensor which are arranged at two ends of a vehicle plate spring acquire first acceleration data of deformation of the vehicle plate spring when a vehicle is in no-load;
the method comprises the steps that a first acceleration sensor and a second acceleration sensor which are installed at two ends of a vehicle plate spring acquire second acceleration data of deformation of the vehicle plate spring when a vehicle is fully loaded;
and the first acceleration sensor and the second acceleration sensor which are arranged at two ends of the vehicle plate spring acquire third acceleration data of the deformation of the vehicle plate spring when the vehicle is currently loaded.
In a possible implementation, the algorithm server 503 determines a coordinate reference based on the acceleration data collected by the first acceleration sensor and the second acceleration sensor, and calculates an angle value of the deformation of the vehicle leaf spring under the coordinate reference, including:
the algorithm server 503 determines a coordinate reference based on first acceleration data collected by the first acceleration sensor and the second acceleration sensor, and calculates a first angle value of deformation of a vehicle leaf spring when the vehicle is empty on the coordinate reference;
the algorithm server 503 calculates a second angle value of the deformation of the vehicle leaf spring when the vehicle is fully loaded on the coordinate reference based on second acceleration data acquired by the first acceleration sensor and the second acceleration sensor;
the algorithm server 503 calculates a third angle value of the deformation of the vehicle leaf spring when the vehicle is currently loaded under the coordinate reference based on third acceleration data collected by the first acceleration sensor and the second acceleration sensor.
In a possible implementation manner, the algorithm server 503 obtains the tonnage value of the current vehicle according to the angle value of the deformation of the vehicle leaf spring, and includes:
the algorithm server 503 stores the vehicle tonnage value when the vehicle is fully loaded;
the algorithm server 503 calculates the tonnage value of the current vehicle based on the first angle value, the second angle value, the third angle value and the vehicle tonnage value when the vehicle is fully loaded.
In a possible implementation manner, the tonnage detecting device further comprises a cache module, configured to divide the tonnage value of the current vehicle into a zero-point tonnage value and a non-zero-point tonnage value according to the current vehicle speed, and replace the non-zero-point tonnage value with the zero-point tonnage value to be displayed to a user, where the zero-point tonnage value is the tonnage value of the current vehicle when the current vehicle speed is zero;
in a possible implementation manner, the tonnage detecting device further comprises a post-processing module, which is used for performing mean value smoothing on the tonnage values of a plurality of current vehicles to obtain the effective tonnage of the current vehicle.
The tonnage detecting device based on the vehicle plate spring dual acceleration sensor provided by the application acquires acceleration data when the vehicle plate spring is deformed by the first acceleration sensor and the second acceleration sensor which are arranged at two ends of the vehicle plate spring, and transmits the acceleration data to the algorithm server through the GPS host, the algorithm server determines a coordinate reference and calculates an angle value of the vehicle plate spring deformed under the coordinate reference based on the acceleration data of the vehicle plate spring deformed when the vehicle is unloaded, fully loaded and currently loaded which are acquired by the first acceleration sensor and the second acceleration sensor, and obtains the tonnage value of the current vehicle according to the angle value of the vehicle plate spring deformed, because the angle value of the vehicle plate spring deformed is obtained on the uniform coordinate reference, the tonnage detecting device is not influenced by the inconsistent deformation at two ends of the vehicle plate spring, and can avoid the problem of inaccurate load calculation caused by uneven road surface, and the accuracy of measuring the tonnage value can be further improved by mean value smoothing and vehicle speed influence elimination.
The above examples are only specific embodiments of the present application, and are not intended to limit the technical solutions of the present application, and the scope of the present application is not limited thereto, although the present application is described in detail with reference to the foregoing examples, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the present disclosure, which should be construed in light of the above teachings. Are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A tonnage detection method based on a vehicle leaf spring double acceleration sensor is characterized by comprising the following steps:
the method comprises the following steps that a first acceleration sensor and a second acceleration sensor which are arranged at two ends of a vehicle plate spring respectively acquire acceleration data when the vehicle plate spring is deformed;
the GPS host acquires acceleration data acquired by the first acceleration sensor and the second acceleration sensor and transmits the acceleration data to the algorithm server;
and the algorithm server determines a coordinate reference based on the acceleration data acquired by the first acceleration sensor and the second acceleration sensor, calculates an angle value of the deformation of the vehicle plate spring under the coordinate reference, and obtains the tonnage value of the current vehicle according to the angle value of the deformation of the vehicle plate spring.
2. The tonnage detection method based on the vehicle leaf spring dual-acceleration sensor is characterized in that a first acceleration sensor and a second acceleration sensor which are arranged at two ends of a vehicle leaf spring respectively collect acceleration data when the vehicle leaf spring is deformed, and the method comprises the following steps:
the method comprises the steps that a first acceleration sensor and a second acceleration sensor which are arranged at two ends of a vehicle plate spring acquire first acceleration data of deformation of the vehicle plate spring when a vehicle is in no-load;
the method comprises the steps that a first acceleration sensor and a second acceleration sensor which are installed at two ends of a vehicle plate spring acquire second acceleration data of deformation of the vehicle plate spring when a vehicle is fully loaded;
and the first acceleration sensor and the second acceleration sensor which are arranged at two ends of the vehicle plate spring acquire third acceleration data of the deformation of the vehicle plate spring when the vehicle is currently loaded.
3. The tonnage detection method based on the vehicle leaf spring dual acceleration sensor as recited in claim 2, characterized in that an algorithm server determines a coordinate reference based on acceleration data collected by the first acceleration sensor and the second acceleration sensor, and calculates an angle value of the vehicle leaf spring deformed under the coordinate reference, comprising the steps of:
the algorithm server determines a coordinate reference based on first acceleration data acquired by the first acceleration sensor and the second acceleration sensor, and calculates a first angle value of deformation of a vehicle plate spring when the vehicle is in no-load on the coordinate reference;
the algorithm server calculates a second angle value of the deformation of the vehicle plate spring when the vehicle is fully loaded on the coordinate reference based on second acceleration data acquired by the first acceleration sensor and the second acceleration sensor;
and the algorithm server calculates a third angle value of deformation of a vehicle plate spring when the vehicle is currently loaded under the coordinate reference based on third acceleration data acquired by the first acceleration sensor and the second acceleration sensor.
4. The tonnage detection method based on the vehicle leaf spring dual-acceleration sensor is characterized in that an algorithm server obtains the tonnage value of the current vehicle according to the angle value of the deformation of the vehicle leaf spring, and comprises the following steps:
the algorithm server stores the tonnage value of the vehicle when the vehicle is fully loaded;
and the algorithm server calculates the tonnage value of the current vehicle based on the first angle value, the second angle value, the third angle value and the vehicle tonnage value when the vehicle is fully loaded.
5. The tonnage detection method based on the vehicle leaf spring dual-acceleration sensor as recited in claim 4, wherein after the algorithm server obtains the current tonnage value of the vehicle according to the angle value of the deformation of the vehicle leaf spring, the method further comprises the following steps:
the algorithm server divides the tonnage value of the current vehicle into a zero position tonnage value and a non-zero position tonnage value according to the current vehicle speed, wherein the zero position tonnage value is the tonnage value of the current vehicle when the current vehicle speed is zero;
and the algorithm server replaces the non-zero-bit tonnage value with the zero-bit tonnage value and displays the zero-bit tonnage value on the user.
6. The tonnage detection method based on the vehicle leaf spring dual-acceleration sensor as recited in claim 4, wherein after the algorithm server obtains the current tonnage value of the vehicle according to the angle value of the deformation of the vehicle leaf spring, the method further comprises the following steps:
and performing mean value smoothing according to the tonnage values of the plurality of current vehicles calculated by the algorithm server to obtain the effective tonnage value of the current vehicle.
7. The tonnage detecting method based on the vehicle leaf spring dual-acceleration sensor as recited in claim 1, wherein the first acceleration sensor and the second acceleration sensor are both three-axis acceleration sensors to acquire three-direction acceleration data when the vehicle leaf spring is deformed.
8. The utility model provides a tonnage detection device based on vehicle leaf spring dual acceleration sensor which characterized in that includes:
the acceleration sensor comprises a first acceleration sensor and a second acceleration sensor which are arranged at two ends of a vehicle plate spring and are used for respectively acquiring acceleration data when the vehicle plate spring is deformed;
the GPS host is used for acquiring acceleration data acquired by the first acceleration sensor and the second acceleration sensor and transmitting the acceleration data to the algorithm server;
and the algorithm server is used for determining a coordinate reference based on the acceleration data acquired by the first acceleration sensor and the second acceleration sensor, calculating an angle value of the vehicle plate spring deformed under the coordinate reference, and obtaining the tonnage value of the current vehicle according to the angle value of the vehicle plate spring deformed.
9. The tonnage detecting device based on the vehicle leaf spring dual-acceleration sensor is characterized by further comprising a cache module, wherein the cache module is used for dividing the tonnage value of the current vehicle into a zero-point tonnage value and a non-zero-point tonnage value according to the current vehicle speed, replacing the non-zero-point tonnage value with the zero-point tonnage value and displaying the zero-point tonnage value on a user, and the zero-point tonnage value is the tonnage value of the current vehicle when the current vehicle speed is zero;
10. the tonnage detecting device based on the vehicle leaf spring dual-acceleration sensor as recited in claim 8, wherein the algorithm server comprises a post-processing module for performing mean value smoothing on the tonnage values of a plurality of current vehicles to obtain the effective tonnage value of the current vehicle.
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