CN111426267A

CN111426267A - Metering system and metering method for acquiring net value of vehicle cargo capacity

Info

Publication number: CN111426267A
Application number: CN202010301543.2A
Authority: CN
Inventors: 陶学文; 王乐宇; 刘世丹; 王潇楠; 赵双文; 金兴; 薛彦; 王强; 梁雪茹; 李锦瑞; 李俊; 杨青文; 姚国梁
Original assignee: LIAONING JINYANG GROUP INFORMATION TECHNOLOGY CO LTD
Current assignee: LIAONING JINYANG GROUP INFORMATION TECHNOLOGY CO LTD
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-07-17

Abstract

The application provides a metering system and a metering method for acquiring net value of cargo capacity of a vehicle. The measuring system comprises a road detection unit and a data processing unit, wherein the road detection unit consists of a support right above a lane and two laser scanning sensors, the first laser scanning sensor is arranged on the support in a manner that a scanning surface is vertical to the road surface and is parallel to the driving direction of the vehicle, and is used for acquiring the horizontal distance difference between any two real-time points of the same set point on the detected vehicle entering a detection area and converting the horizontal distance difference to obtain the vehicle speed; the second laser scanning sensor is arranged on the support through a scanning surface vertical to the road surface and a transverse scanning road surface and is used for acquiring transverse scanning areas of all transverse scanning surfaces of the detected vehicle according to set acquisition frequency, and the transverse scanning areas are converted into values to be combined to obtain a net loading volume. The technical scheme fills the blank of metering bulk goods which cannot be accurately metered by the conventional weighing method.

Description

Metering system and metering method for acquiring net value of vehicle cargo capacity

Technical Field

The patent application relates to a non-contact method vehicle information detection method, in particular to a method for completing vehicle cargo capacity detection by a non-contact method and a detection system thereof.

Background

The load capacity of the bulk cargo vehicle for road transportation is a main data which needs to be mastered by both the transportation party and the selling party. The conventional method is to weigh the load before unloading and after unloading, and weigh the load by the difference between before and after loading. However, the weighing and measuring method has more technical problems, a special pound weighing area needs to be set, and a loading vehicle needs to go around to weigh by weighing, so that the implementation efficiency is low; this method is not suitable for bulk cargo, most typically river sand, which is a building material, where the cargo capacity cannot be determined by weight. The river sand has the same volume, and is heavy when the water content is large and light when the water content is small, so that the carrying amount of the river sand cannot be determined only according to the mass. The river sand has irregular volume, inaccurate volume measured and calculated manually, easy cheating, long time consumption and low efficiency, and needs to be stopped for processing; in addition, after the centralized unloading, the loading capacity of each vehicle cannot be known.

Disclosure of Invention

The invention aims to fill the blank of measuring bulk goods which cannot be accurately measured by adopting a conventional weighing method, and provides a measuring system and a measuring method for obtaining the net value of the loaded goods of a vehicle, which are free of obstacles and are detected by non-contact measurement on a road.

The application provides an acquire measurement system technical scheme of vehicle cargo capacity net value, its main technical content is: a metering system for obtaining the net value of the cargo capacity of a vehicle comprises a road detection unit and a data processing unit, wherein the data processing unit acquires the acquisition information of the road detection unit through signals and implements conversion processing, the road detection unit is composed of a support right above a lane and two laser scanning sensors, the first laser scanning sensor is arranged on the support in a manner that a scanning surface is vertical to the road surface and parallel to the driving direction of the vehicle and is used for acquiring the real-time distance of a set point on the detected vehicle entering a detection area, and the data processing unit converts the horizontal distance difference of any two real-time points of the same set point on the detected vehicle to obtain the vehicle speed; the second laser scanning sensor is arranged on the support in a manner that the scanning surface is vertical to the road surface and the transverse scanning road surface is used for collecting the transverse scanning area of each transverse scanning surface of the detected vehicle according to the set collection frequency.

The application of the present application further provides a metering method based on the metering system for obtaining the net value of the cargo capacity of the vehicle, the metering method is: acquiring corresponding distance values between each real-time point and a detected vehicle relative to the detected vehicle in the entering area by a first laser scanning sensor, and converting by a data processing unit according to the distance difference between any two real-time points of a set point on the detected vehicle to obtain the vehicle speed; and acquiring each transverse scanning cross section area of the detected vehicle passing through the transverse scanning surface by a second scanning type laser sensor according to the set acquisition frequency, and subtracting the product value of the unloaded vehicle body obtained by the same method from the product of the acquired vehicle speed and the acquisition frequency to obtain a loading volume net value.

The application discloses a measurement system and a measurement method for obtaining vehicle cargo net value, which fills the blank of bulk cargo measurement that the conventional weighing method can not accurately measure, realizes the technical purpose of road barrier-free and non-contact detection and collection, and can timely obtain the cargo volume value. This technical scheme still has the detection of not stopping, gathers and detect high-efficient, accurate technical advantage, can also provide the bicycle volume of carrying goods information.

Drawings

Fig. 1 is a configuration diagram of a road detection unit according to the present patent application.

Fig. 2 is a scanning setup diagram of a second laser scanning sensor.

Fig. 3 is a scanning setup diagram of the first laser scanning sensor.

Fig. 4 and 5 are schematic diagrams of two steps of volume metering in accordance with the patent application.

Detailed Description

The utility model provides an acquire measurement system of vehicle cargo capacity net value, its constitution includes road detecting element and data processing unit 5, and data processing unit 5 wherein generally sets up in road one side, gathers road detecting element's detection information through signal cable or wireless mode, implements conversion, conversion by interior procedure and handles.

The road detection unit mainly comprises a support 2 erected right above a lane and two

laser scanning sensors

3 and 4, wherein the two

laser scanning sensors

3 and 4 are arranged on the support 2 and are positioned right above the lane to be detected.

As shown in fig. 3, the first laser scanning sensor 4 is arranged on the bracket 2 in a manner of scanning in a direction parallel to the vehicle running direction and perpendicular to the road surface; as shown in fig. 2, the second laser scanning sensor 3 is disposed on the support 2 in a vertical direction and a lateral direction.

Based on the metering system for acquiring the net value of the vehicle cargo capacity, the metering method comprises the following steps:

specifically, we know that the ground of the first laser scanning sensor 4 is set to a height H, each scanning line in the detection area is at an angle θ corresponding to a vertical line, the detected vehicle enters the detection area of the first laser scanning sensor 4, the first scanning time of the first laser scanning sensor 4 is a first time T1, the distance H1 from the detected vehicle is collected, the horizontal distance H between the head of the detected vehicle and the first laser scanning sensor 4 is L by the lower sine formula L = H1 sin θ, the vehicle continues to run, the time when the detected vehicle is detected in a vertical position is a second detection time T2, the time interval between two points of vehicle running is T = T2-T1, the distance between two real-time detection points is L, and the running speed V of the detected vehicle is obtained by the formula V = L/Δ T conversion.

When the cargo vehicle runs to the vertically downward lateral detection area of the second laser scanning sensor 3, the second laser scanning sensor 3 transmits a cross-sectional view acquired by each frequency sweep to the data processing unit 5 according to the scanning frequency, as shown in fig. 5, the cross-sectional view is in an irregular outline surrounding graph due to the fact that the cargo is in a bulk state, the data processing unit 5 divides the irregular graph into a plurality of small squares, the smaller the length value of the side of each small square is, the calculated graph area approaches to the actual value of the outline surrounding graph, the smaller the error between the two is, the unit area of each square is s, the number of squares in the irregular outline surrounding graph of each frequency sweep cross section is respectively n1, n2, n 68 and n4 …, the approximate values of the corresponding graph areas are n1s, n2s, n3s and n4s …, the scanning frequency F of the second laser scanning sensor 3 is known, the vehicle running distance L = V/F of each scanning interval is obtained, the vehicle running distance of each scanning interval is further obtained according to the calculated approximate value of the transverse scanning volume of each scanning zone passing through the second laser scanning sensor 3, the transverse scanning volume of each scanning interval is further obtained, the instantaneous scanning volume = n1 is obtained, and the total scanning volume of the scanning zone is obtained by calculation, and the instantaneous scanning volume of the scanning zone.

Claims

1. A metering system for obtaining the net value of the cargo capacity of a vehicle comprises a road detection unit and a data processing unit (5), wherein the data processing unit (5) collects the collected information of the road detection unit through signals and carries out conversion processing, and is characterized in that the road detection unit consists of a support (2) right above a lane and two laser scanning sensors, wherein a first laser scanning sensor (4) is arranged on the support (2) in a manner that a scanning surface is vertical to the road surface and parallel to the driving direction of the vehicle and is used for collecting the horizontal distance difference between any two real-time points of the same set point on the detected vehicle entering a detection area and converting to obtain the vehicle speed; the second laser scanning sensor (3) is arranged on the support (2) with a scanning surface vertical to the road surface and a transverse scanning road surface, and is used for collecting transverse scanning areas of all transverse scanning surfaces of the detected vehicle according to a set collecting frequency.

2. A metering method of a metering system for acquiring net value of cargo capacity of a vehicle according to claim 1, wherein the metering method comprises the following steps: acquiring corresponding distance values between each real-time point and a detected vehicle relative to the detected vehicle in an entrance area by a first laser scanning sensor, and converting by a data processing unit according to the horizontal distance difference of any two real-time points of the same set point on the detected vehicle to obtain the vehicle speed; and a second scanning type laser sensor (3) acquires each transverse scanning cross section area of the detected vehicle passing through the transverse scanning surface according to the set acquisition frequency, and subtracts the product value of the unloaded vehicle body obtained by the same method from the product of the acquired vehicle speed and the acquisition frequency to obtain a net loading volume.

3. The metering method according to claim 2, characterized in that the detected vehicle enters the detection area of the first laser scanning sensor (4), the first scanning time of the first laser scanning sensor (4) is a first time T1, the distance value H1 between the detected vehicle and the detected vehicle at the time is collected, the horizontal distance value L between the head of the detected vehicle and the first laser scanning sensor (4) is obtained by conversion according to the following sine formula L = H1 sin θ, the vehicle continues to run, the time when the detected vehicle is detected in the vertical position is a second detection time T2, the vehicle running time interval between two points is Δ T = T2-T1, the distance between two real-time detection points is L, and the running speed V of the detected vehicle is obtained by conversion according to the formula V = L T.

4. The metrology method of claim 2, characterized in that the second laser scanning sensor (3) splits the cross-sectional profile bounding surface acquired for each sweep frequency into several small squares according to the scanning frequency, and the smaller the side length value of the small squares, the closer the calculated pattern area to the actual value.