JPH0658796A - Load weighting apparatus having centroid position detecting function - Google Patents
Load weighting apparatus having centroid position detecting functionInfo
- Publication number
- JPH0658796A JPH0658796A JP21257192A JP21257192A JPH0658796A JP H0658796 A JPH0658796 A JP H0658796A JP 21257192 A JP21257192 A JP 21257192A JP 21257192 A JP21257192 A JP 21257192A JP H0658796 A JPH0658796 A JP H0658796A
- Authority
- JP
- Japan
- Prior art keywords
- center
- gravity position
- weight
- wheels
- gravity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- Testing Of Balance (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、貨物自動車等の車両の
積載荷重を測定する積載重量計に関し、更に詳細には、
車両の各車輪についての重量を測定することにより重心
位置を求めて、過積載及び積荷の片寄りを検出し得る積
載重量計に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load scale for measuring a load of a vehicle such as a lorry, and more specifically,
The present invention relates to a load scale capable of detecting the center of gravity by measuring the weight of each wheel of a vehicle and detecting overloading and deviation of the load.
【０００２】[0002]
【従来の技術】近年、貨物自動車の過積載、積荷の片寄
り等による道路の損傷や交通事故が増加し、社会的にも
問題となってきている。このような問題に対処するた
め、例えば高速道路に入る前に貨物自動車の重量を測定
して、過積載の車両を発見する等の対策が採られてい
る。2. Description of the Related Art In recent years, road damage and traffic accidents due to overloading of freight vehicles, deviation of cargo, and the like have increased, and have become a social problem. In order to deal with such a problem, measures are taken, for example, by measuring the weight of a freight vehicle before entering an expressway and finding an overloaded vehicle.
【０００３】従来より貨物自動車の重量の測定には、軸
重計方式が採用されている。軸重計方式では、路面と同
じ高さに軸重計の計量載台が設置され、これに貨物自動
車の前輪と後輪とが順次載せられてそれぞれの車軸につ
いて一軸重量が測定される。Conventionally, an axle load measuring system has been adopted for measuring the weight of a freight vehicle. In the axle load meter method, a weighing platform for the axle load meter is installed at the same height as the road surface, and the front wheels and the rear wheels of the freight vehicle are sequentially placed on the platform to measure the weight of each axle.
【０００４】得られた一軸重量の値を合計することによ
り、車両全体の重量が求められる。The total weight of the vehicle is obtained by summing the obtained values of the uniaxial weight.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、従来の
軸重方式によれば過積載の車両を発見することはできる
が、積荷の片寄りを生じている車両を発見することはで
きない。従って、積荷の片寄りに起因する事故、道路の
破損等を防止することはできないというのが現状であ
る。However, according to the conventional axle load system, an overloaded vehicle can be found, but a vehicle in which the load is deviated cannot be found. Therefore, the current situation is that it is not possible to prevent accidents, damage to roads, etc. due to uneven loading.
【０００６】本発明はこのような従来の問題点を解決す
るものであり、本発明の目的は、過積載の車両を発見し
得ると共に、積荷の片寄りをも検出し得る重心位置検出
機能を有する積載重量計を提供することである。The present invention solves such a conventional problem, and an object of the present invention is to detect a position of the center of gravity capable of detecting an overloaded vehicle and detecting a deviation of the load. A load weighing machine having the same is provided.
【０００７】[0007]
【課題を解決するための手段】本発明に係る積載重量計
は、車両の前輪及び後輪に於ける一軸重量を順次測定す
る軸重計と、前記車両の前輪及び後輪の何れか一方の一
軸重量と前輪及び後輪の一軸重量を加算して求めた全重
量と前輪及び後輪の間の車軸間距離とに基づいて前記車
両の前後方向の重心位置を求める前後重心位置決定手段
と、を有することを特徴とする。A load weighing machine according to the present invention comprises an axle load meter for sequentially measuring uniaxial weights of front wheels and rear wheels of a vehicle, and one of front wheels and rear wheels of the vehicle. Front-rear center-of-gravity position determining means for determining the front-rear direction center-of-gravity position of the vehicle based on the total weight obtained by adding the uniaxial weight and the uniaxial weight of the front and rear wheels and the inter-axle distance between the front and rear wheels. It is characterized by having.
【０００８】また、本発明に係る積載重量計は、車両の
前輪及び後輪の車軸のそれぞれについて左右の車輪につ
いての重量を独立に測定し得る軸重計と、該軸重計に於
いて順次測定された各車輪についての重量の全てを合計
して求めた全重量と左側及び右側の何れか一方の側に於
ける前輪及び後輪についての重量の合計と左右の車輪の
幅とに基づいて前記車両の左右方向の重心位置を求める
左右重心位置決定手段と、を有することを特徴とする。The load weighing machine according to the present invention further comprises an axle weight meter capable of independently measuring the weights of the left and right wheels of each of the front and rear axles of the vehicle, and the axle weight meter sequentially. Based on the total weight of all the measured weights for each wheel, the total weight of the front and rear wheels on either the left or right side, and the width of the left and right wheels. And a left-right center-of-gravity position determining unit that obtains a left-right direction center-of-gravity position of the vehicle.
【０００９】また、左右重心位置決定手段を有する積載
重量計に於いて、前記軸重計で得られた全車輪について
の重量を合計して求めた全重量と、前輪及び後輪の何れ
か一方に於ける左右の車輪についての重量の合計と、前
輪及び後輪の間の車軸間距離とに基づいて、前記車両の
前後方向の重心位置を求める前後重心位置決定手段を更
に有する構成とすることもできる。Further, in a load weighing machine having left and right center-of-gravity position determining means, the total weight obtained by summing the weights of all the wheels obtained by the axle weight scale, and either one of the front wheels and the rear wheels. And a front-rear center-of-gravity position determining means for determining a front-rear direction center-of-gravity position of the vehicle based on a total weight of the left and right wheels and an inter-axle distance between the front wheels and the rear wheels. You can also
【００１０】更に、前後重心位置決定手段を有する構成
に於いては、車種別の前後方向に於ける理想的重心位置
を記憶する記憶手段と、該記憶手段に記憶されている理
想的重心位置と前記前後重心位置決定手段で求めた重心
位置とに基づいて前後方向に於ける重心位置のズレを算
出する重心位置ズレ算出手段と、を更に有する構成とす
ることもできる。Further, in the structure having the front-rear center-of-gravity position determining means, a storage means for storing the ideal center-of-gravity position in the front-rear direction of each vehicle type and an ideal center-of-gravity position stored in the storage means are provided. The center-of-gravity position deviation calculating means for calculating the deviation of the center-of-gravity position in the front-rear direction based on the center-of-gravity position determined by the front-rear center-of-gravity position determining means may be further included.
【００１１】また、前記軸重計を、左右の車輪のそれぞ
れについて重量を測定する独立した重量計を有する構成
とすることもできる。Further, the axle load scale may be configured to have an independent weight scale for measuring the weight of each of the left and right wheels.
【００１２】[0012]
【作用】上記の構成よりなる重心位置検出機能を有する
積載重量計によれば、車両の重量及び前後方向の重心位
置は以下のようにして求められる。まず、測定対象とな
る車両の前輪を軸重量計に乗せ、前輪の一軸重量を測定
する。次に、車両を前方に進めて後輪を軸重量計に乗
せ、後輪の一軸重量を測定する。このようにして測定し
た前輪及び後輪の一軸重量を合計することにより、車両
の重量と積載荷重とを合計した全重量が求められる。次
に、上記で求めた全重量と、前輪及び後輪についての一
軸重量の何れか一方の測定値と、車両の前輪及び後輪の
軸間距離とに基づいて、前後重心位置決定手段で前後方
向の重心位置が求められる。According to the loading scale having the function of detecting the position of the center of gravity having the above-described structure, the weight of the vehicle and the position of the center of gravity in the front-rear direction are obtained as follows. First, the front wheel of the vehicle to be measured is placed on the axle scale and the uniaxial weight of the front wheel is measured. Next, the vehicle is moved forward, the rear wheels are placed on the axle scale, and the uniaxial weight of the rear wheels is measured. By totaling the uniaxial weights of the front wheels and the rear wheels measured in this way, the total weight of the vehicle and the loaded load can be obtained. Next, based on the total weight obtained above and the measured value of one of the uniaxial weights of the front and rear wheels, and the axial distance between the front and rear wheels of the vehicle, the front and rear center of gravity position determining means determines the front and rear. The position of the center of gravity in the direction is determined.
【００１３】次に、軸重計において左右の車輪のそれぞ
れについて独立に重量が測定される本発明の他の構成で
は、車両の前後方向と左右方向の重心位置を求めること
ができる。前後方向の重心位置は、前輪の左右の車輪に
ついて測定した重量の合計を前輪の一軸重量とし、後輪
の左右の車輪について測定した重量の合計を後輪の一軸
重量とすることにより、上記と同様にして求めることが
できる。左右方向の重心位置は、全車輪について測定し
た重量値を合計することにより得られる車両の全重量
と、前輪の右側及び後輪の右側の車輪についての重量の
合計、又は前輪の左側及び後輪の左側の車輪についての
重量の合計と、左右の車輪の幅とを用いることにより求
めることができる。Next, in another configuration of the present invention in which the weight is independently measured for each of the left and right wheels in the axle weight meter, the center of gravity position of the vehicle in the front-rear direction and the left-right direction can be obtained. The position of the center of gravity in the front-rear direction is defined as the above by setting the total weight of the left and right front wheels as the uniaxial weight of the front wheel and the total weight of the left and right rear wheels as the uniaxial weight of the rear wheel. The same can be obtained. The position of the center of gravity in the left-right direction is the total weight of the vehicle obtained by summing the weight values measured for all wheels and the weight of the right wheels of the front wheels and the right wheels of the rear wheels, or the left and rear wheels of the front wheels. It can be obtained by using the total weight of the wheels on the left side of and the width of the left and right wheels.
【００１４】車両の前後方向に於ける重心位置のズレを
求める機能を付加した構成では、車種別の前後方向の理
想的な重心位置のデータを格納する記憶手段を有してい
る。In the structure to which the function of obtaining the shift of the center of gravity position in the front-rear direction of the vehicle is added, there is a storage means for storing the data of the ideal center-of-gravity position in the front-rear direction of each vehicle type.
【００１５】この記憶手段に記憶されているデータの中
から測定対象となっている車両と同じ車種についての理
想的重心位置のデータを取り出し、このデータと前後重
心位置決定手段で得られた重心位置とを比較することに
より、重心位置のズレが算出される。From the data stored in the storage means, data of the ideal center-of-gravity position for the same vehicle type as the vehicle to be measured is extracted, and this data and the center-of-gravity position obtained by the front-rear center-of-gravity position determining means are extracted. By comparing and, the shift of the position of the center of gravity is calculated.
【００１６】左右の車輪についての重量の測定は、一つ
の軸重計に設けられた左右のロードセルから独立に計測
値を得ることにより、又は左右の独立した重量計からな
る軸重計を設けることにより、行うことができる。The weights of the left and right wheels are measured by obtaining the measured values independently from the left and right load cells provided in one axle weight meter, or by providing the axle weight meter composed of the left and right independent weight scales. Can be done by
【００１７】[0017]
【実施例】以下、本発明の実施例を図面に基づいてより
詳細に説明する。図１は本発明の一実施例に係る重心位
置検出機能を有する積載重量計の概略構成を示してい
る。本発明の積載重量計は、貨物自動車２０の前輪及び
後輪の一軸重量を順次測定する軸重計１を有している。
この軸重計１は、左右の車輪のそれぞれについての重量
を独立に測定する重量計１ａ，１ｂからなり、重量計１
ａ，１ｂはそれぞれ４つのロードセル６，６…を有して
いる。また、重量計１ａ，１ｂの計量載台２ａ，２ｂ
は、それぞれ路面４と同じ高さに設定され、各計量載台
２ａ，２ｂの進行方向の長さは８０ｃｍ、２つの計量載
台２ａ，２ｂの外側の辺の間の距離Ｒ（図１参照）は、
国内道路交通法、車両制限令等で定められている自動車
の最大幅（２．５ｍ）よりも十分大きくなるように設定
されている。本実施例ではＲ＝３ｍに設定してある。ま
た、路面４及び各計量載台２ａ，２ｂの上には、通行帯
３，３がペイント等によって描かれている。Embodiments of the present invention will now be described in more detail with reference to the drawings. FIG. 1 shows a schematic configuration of a loading scale having a gravity center position detecting function according to an embodiment of the present invention. The load weighing machine of the present invention has an axle load meter 1 for sequentially measuring the uniaxial weights of the front wheels and the rear wheels of a freight vehicle 20.
The axle scale 1 includes weight scales 1a and 1b that independently measure the weight of each of the left and right wheels.
Each of a and 1b has four load cells 6, 6 ... In addition, the weighing platforms 2a and 2b of the weighing scales 1a and 1b.
Are set to the same height as the road surface 4, and the length of each weighing platform 2a, 2b in the traveling direction is 80 cm, and the distance R between the outer sides of the two weighing platforms 2a, 2b (see FIG. 1). ) Is
It is set to be sufficiently larger than the maximum width of an automobile (2.5 m) specified by the Domestic Road Traffic Law, Vehicle Restriction Ordinance, etc. In this embodiment, R = 3 m is set. Further, on the road surface 4 and each of the weighing platforms 2a and 2b, lanes 3 and 3 are drawn by paint or the like.
【００１８】重量計１ａ，１ｂの各ロードセル６，６…
からの出力はそれぞれ増幅器５ａ，５ｂに導かれ、更に
Ａ／Ｄ変換器１６ａ，１６ｂを介して加算器７に入力さ
れている。また、Ａ／Ｄ変換器１６ｂの出力は第２演算
器１１にも入力されている。The load cells 6, 6 of the weighing scales 1a, 1b ...
The outputs from are led to the amplifiers 5a and 5b, respectively, and are further input to the adder 7 via the A / D converters 16a and 16b. The output of the A / D converter 16b is also input to the second calculator 11.
【００１９】加算器７の出力は前後重心位置決定手段１
５の第１メモリ８及び第１演算器１０に入力されてい
る。第１演算器１０の出力は第２メモリ９及び第３メモ
リ１２に接続され、第２の演算器１１の出力は第３メモ
リ１２に接続されている。第３メモリ１２は比較回路１
３に接続され、比較回路１３には車種別の最大積載重
量、理想的重心位置のデータ、左右の車輪の幅等を記憶
する第４メモリ１４が接続されている。また、第４メモ
リ１４は、第１及び第２演算器１０，１１にも接続され
ている。本実施例では第２の演算器１１と第２メモリ９
とによって左右重心位置決定手段が構成されている。The output of the adder 7 is the front and rear center of gravity position determining means 1.
5 to the first memory 8 and the first arithmetic unit 10. The output of the first arithmetic unit 10 is connected to the second memory 9 and the third memory 12, and the output of the second arithmetic unit 11 is connected to the third memory 12. The third memory 12 is the comparison circuit 1
The third memory 14 is connected to the third circuit 14, and the comparison circuit 13 is connected to a fourth memory 14 that stores the maximum load weight for each vehicle type, ideal center-of-gravity position data, the width of the left and right wheels, and the like. The fourth memory 14 is also connected to the first and second arithmetic units 10 and 11. In the present embodiment, the second arithmetic unit 11 and the second memory 9
The left and right center-of-gravity position determining means are constituted by and.
【００２０】以上の構成を有する本実施例の積載重量計
は、以下のように機能する。まず、貨物自動車２０の前
輪をそれぞれ軸重計１の計量載台２ａ，２ｂ上に載せ
る。これにより、重量計１ａ，１ｂの各ロードセル６，
６…から重量計１ａ，１ｂに於ける負荷に比例した出力
がそれぞれ得られる。これらの出力は増幅器５ａ，５ｂ
及びＡ／Ｄ変換器１６ａ，１６ｂに入力され、左右の前
輪についてそれぞれ独立に測定した重量値として出力さ
れる。これらの左右の重量値は、加算器７で加算され、
加算した結果は前輪の一軸重量として第１演算器１０に
格納される。また、右側の前輪について測定した重量
値、即ちＡ／Ｄ変換器１６ｂの出力は、第２演算器１１
にも格納される。The loading scale of the present embodiment having the above construction functions as follows. First, the front wheels of the freight vehicle 20 are placed on the weighing platforms 2a and 2b of the axle load scale 1, respectively. As a result, each load cell 6 of the scales 1a and 1b is
Outputs proportional to the loads on the weighing scales 1a and 1b are obtained from 6 ... These outputs are amplifiers 5a and 5b.
And the A / D converters 16a and 16b, and output as weight values independently measured for the left and right front wheels. These left and right weight values are added by the adder 7,
The added result is stored in the first computing unit 10 as the uniaxial weight of the front wheel. In addition, the weight value measured for the right front wheel, that is, the output of the A / D converter 16b is the second calculation unit 11
Also stored in.
【００２１】次に、貨物自動車２０を進行方向に進めて
後輪を軸重量計１の計量載台２ａ，２ｂ上に載せる。こ
れにより、前輪の場合と同様に、左右の後輪についてそ
れぞれ独立に測定した重量値が得られる。また、これら
の左右の重量値は加算器７で加算され、加算器７で得ら
れた後輪の一軸重量のデータは第１メモリ８に格納され
る。それと同時に後輪の一軸重量のデータは、前述のよ
うに第１演算器１０に格納されていた前輪の一軸重量に
加えられ、その合計が貨物自動車２０の全重量として第
２メモリ９及び第３メモリ１２に格納される。Next, the freight vehicle 20 is advanced in the traveling direction and the rear wheels are placed on the weighing platforms 2a and 2b of the axle scale 1. As a result, similarly to the case of the front wheels, the weight values independently measured for the left and right rear wheels can be obtained. The left and right weight values are added by the adder 7, and the uniaxial weight data of the rear wheels obtained by the adder 7 is stored in the first memory 8. At the same time, the uniaxial weight data of the rear wheels is added to the uniaxial weight of the front wheels stored in the first computing unit 10 as described above, and the total thereof is taken as the total weight of the freight vehicle 20 in the second memory 9 and the third memory. It is stored in the memory 12.
【００２２】一方、Ａ／Ｄ変換器１６ｂから出力される
後輪の右側の車輪の重量値は第２演算器１１にも入力さ
れ、前述のように予め格納されていた前輪の右側の車輪
の重量値に加えられる。従って、第２演算器１１には、
前輪及び後輪の右側の車輪についての重量の合計が格納
されている。On the other hand, the weight value of the wheel on the right side of the rear wheel output from the A / D converter 16b is also input to the second calculator 11, and as described above, the weight value of the wheel on the right side of the front wheel is stored. Added to the weight value. Therefore, in the second computing unit 11,
The total weight of the right wheels of the front wheels and the rear wheels is stored.
【００２３】積載荷重を含めた貨物自動車２０の前後方
向の重心位置は、以下のようにして求めることができ
る。図２に示すように、前輪と後輪との間の車軸間距離
をＬ、前輪の一軸重量をＷf 、後輪の一軸重量をＷb 、
前輪から重心の位置までの距離をＬx とすると、 （Ｌ−Ｌx ）×Ｗb ＝Ｌx ×Ｗf の関係が成り立つ。The position of the center of gravity of the freight vehicle 20 in the front-rear direction, including the load, can be obtained as follows. As shown in FIG. 2, the axle distance between the front and rear wheels is L, the front axle weight is Wf, the rear axle weight is Wb,
When the distance from the front wheel to the position of the center of gravity is Lx, the relationship of (L-Lx) * Wb = Lx * Wf is established.
【００２４】従って、以下の式、 Ｌx ＝Ｌ×（Ｗb ／（Ｗb ＋Ｗf ）） によって前後方向の重心位置を求めることができる。こ
こで、（Ｗb ＋Ｗf ）の値は第２メモリ９に、Ｗb の値
は第１メモリ８にそれぞれ格納されている。また、車軸
間距離Ｌは、後述するように、車種別の各種データを格
納する第４記憶手段１４に記憶されている。Therefore, the center of gravity position in the front-rear direction can be obtained by the following equation: Lx = L × (Wb / (Wb + Wf)). Here, the value of (Wb + Wf) is stored in the second memory 9, and the value of Wb is stored in the first memory 8. Further, the inter-axle distance L is stored in the fourth storage means 14 for storing various data for each vehicle type, as described later.
【００２５】このようにして求めた重心位置Ｌx は第３
メモリ１２に格納された後、比較回路１３に転送され
る。比較回路１３は重心位置ズレ算出手段として機能
し、重心位置Ｌx と測定対象となっている貨物自動車２
０の設計時に於ける理想荷重下での重心位置Ｌs との比
較によって重心の位置ズレを求める。即ち、重心の位置
ズレＳは次式によって求められる。The barycentric position Lx thus obtained is the third
After being stored in the memory 12, it is transferred to the comparison circuit 13. The comparison circuit 13 functions as a center-of-gravity position shift calculation means, and the center-of-gravity position Lx and the freight vehicle 2 to be measured.
The position shift of the center of gravity is obtained by comparison with the position Ls of the center of gravity under an ideal load when designing 0. That is, the position shift S of the center of gravity is obtained by the following equation.
【００２６】Ｓ＝Ｌs −Ｌx この重心の位置ズレＳの値は、ディスプレイ、プリンタ
等に出力されて表示される。この表示は、例えば「あな
たの車の重心は、後ろに１ｍ寄っています。」のように
行われる。なお、本実施例では、積載荷重を含めた貨物
自動車２０の重量（Ｗb ＋Ｗf ）が所定値より大きい場
合には、従来と同様に警告を表示することは言うまでも
ない。S = Ls-Lx The value of the positional deviation S of the center of gravity is output to a display, a printer or the like for display. This display is made, for example, "The center of gravity of your car is 1 m behind." In the present embodiment, it goes without saying that when the weight (Wb + Wf) of the freight vehicle 20 including the load is larger than a predetermined value, a warning is displayed as in the conventional case.
【００２７】積載荷重を含めた貨物自動車２０の左右方
向の重心位置は、以下のようにして求められる。図４に
示すように、左右の車輪の間の幅をＤ、前輪及び後輪の
左側の車輪２３ａ，２４ａについての重量の合計をＴl
、右側の車輪２３ｂ，２４ｂについての重量の合計を
Ｔr 、左側の車輪から重心までの距離をＤy とすると、 （Ｄ−Ｄy ）×Ｔr ＝Ｄy ×Ｔl の関係がが成り立つ。幅Ｄは、第４記憶手段１４に車種
別のデータとして格納されているものを用いる。上記の
式から、 Ｄy ＝Ｄ×（Ｔr ／（Ｔr ＋Ｔl ）） が得られる。ここで、 Ｔr ＋Ｔl ＝Ｗb ＋Ｗf であるから、Ｔr ＋Ｔl の値として、第２メモリ９に格
納されている全重量の値を用いることができる。従っ
て、 Ｄy ＝Ｄ×（Ｔr ／（Ｗb ＋Ｗf ）） によって前後方向の重心位置を求めることができる。こ
の演算は、第２演算器１１に保持されている前輪及び後
輪の右側の車輪の合計重量を、第２メモリ９に格納され
ている全重量の値で割算をすることにより行うことがで
きる。The position of the center of gravity of the freight vehicle 20 in the left-right direction including the load is obtained as follows. As shown in FIG. 4, the width between the left and right wheels is D, and the total weight of the left and right wheels 23a, 24a of the front and rear wheels is Tl.
, Tr is the total weight of the right wheels 23b and 24b, and Dy is the distance from the left wheel to the center of gravity, the relationship of (D-Dy) * Tr = Dy * Tl is established. As the width D, the width stored in the fourth storage means 14 as the vehicle type data is used. From the above equation, Dy = D.times. (Tr / (Tr + Tl)) is obtained. Here, since Tr + Tl = Wb + Wf, the value of the total weight stored in the second memory 9 can be used as the value of Tr + Tl. Therefore, the position of the center of gravity in the front-rear direction can be obtained by Dy = D * (Tr / (Wb + Wf)). This calculation can be performed by dividing the total weight of the wheels on the right side of the front wheels and the rear wheels held in the second calculator 11 by the value of the total weight stored in the second memory 9. it can.
【００２８】ここで、積み荷の左右方向の片寄り量をｅ
とすると、ｅは、 ｅ＝Ｄy −（Ｄ／２） ＝Ｄ×（Ｔr ／（Ｗb ＋Ｗf ））−（Ｄ／２） によって求められる。ｅ＞０ならば車両の進行方向に向
かって右側に、ｅ＜０ならば左側に積み荷が片寄ってい
ることを表している。この片寄り量は、例えば「あなた
の車の重心は、右に何ｃｍ片寄っています」のようにデ
ィスプレイ、プリンタ等に表示して運転者に報告され
る。Here, the lateral deviation of the load is e
Then, e is calculated by the following equation: e = Dy- (D / 2) = D * (Tr / (Wb + Wf))-(D / 2). If e> 0, the load is offset to the right in the traveling direction of the vehicle, and if e <0, the load is offset to the left. The deviation amount is displayed on a display, a printer, or the like, such as "the center of gravity of your vehicle is deviated to the right by several centimeters", and is reported to the driver.
【００２９】上述では左右方向の重心位置を求めたが、
単に前輪又は後輪に於ける左右方向の積み荷の片寄りの
程度を表すデータを求めてもよい。このデータは、Ａ／
Ｄ変換器１６ａ、１６ｂの両方の出力を第２演算器１１
に入力する構成とすれば、第２演算器１１に於いて求め
られる。積荷の片寄りの程度は、左右の車輪について測
定した重量をそれぞれＷl 及びＷr とすると、例えば以
下の式に示す左右の重量の差によって知ることができ
る。 Ｗl −Ｗr 或いは、次式のように一軸重量（Ｗl ＋Ｗr ）に対する
一方の車輪における重量の比率によっても知ることがで
きる。In the above, the position of the center of gravity in the left-right direction is obtained,
It is also possible to simply obtain data indicating the degree of lateral deviation of the load on the front wheels or the rear wheels. This data is A /
The outputs of both D converters 16a and 16b are supplied to the second arithmetic unit 11
If it is configured to input to, it is obtained in the second computing unit 11. If the weights measured for the left and right wheels are taken as Wl and Wr, the degree of deviation of the load can be known, for example, from the difference between the left and right weights shown in the following equation. Wl-Wr or the ratio of the weight of one wheel to the uniaxial weight (Wl + Wr) as shown in the following equation.
【００３０】１００×Ｗl ／（Ｗl ＋Ｗr ） 上式の比率は、５０％の場合には左右の積荷の片寄りが
ないことを表し、例えば６０％では積荷が左側へ１０％
片寄っていることを表している。このようにして得られ
た前輪についての左右方向の積荷の片寄りデータは第３
メモリ１２に格納される。この片寄りデータが予め定め
られた範囲を外れている場合には、例えばディスプレ
イ、プリンタ等に警告を促す表示が行われる。100 × Wl / (Wl + Wr) When the ratio of the above equation is 50%, it means that there is no deviation of the left and right cargo. For example, at 60%, the cargo is 10% to the left.
It means that it is biased. The deviation data of the load in the left-right direction for the front wheels thus obtained is the third data.
It is stored in the memory 12. When the offset data is out of the predetermined range, for example, a display prompting a warning is displayed on a display, a printer, or the like.
【００３１】上述のように、本実施例の重心位置検出機
能を有する積載重量計によれば、積載重量測定と同時
に、前後方向及び左右方向の重心位置のデータが求めら
れる。As described above, according to the load scale having the function of detecting the center of gravity of the present embodiment, the data of the center of gravity in the front-rear direction and the left-right direction are obtained at the same time when the load weight is measured.
【００３２】これらのデータのうち、前後方向の重心位
置のデータは車種別に記憶されている理想的重心位置の
データと即座に比較されるので、例えば高速道路に入る
前に本実施例の積載重量計で計測すれば、事故を起こす
危険性の高い貨物自動車を容易に発見することができ
る。Among these data, the data of the center of gravity position in the front-rear direction is immediately compared with the data of the ideal center of gravity position stored for each vehicle type, so that the loaded weight of this embodiment before entering the highway, for example. If you measure with a meter, you can easily find a lorry with a high risk of causing an accident.
【００３３】また、本実施例では左右独立した計量載台
２ａ，２ｂをそれぞれ有する重量計１ａ，１ｂを設けた
が、例えば図３に示すように、１枚の計量載台２を有す
る単一の重量計からなる軸重計１を用いる構成とするこ
ともできる。この構成では、軸重計１に設けたロードセ
ル６ａ〜６ｄのうち、ロードセル６ａ，６ｂから左の車
輪について測定した重量が得られ、ロードセル６ｃ，６
ｄから右の車輪について測定した重量が得られる。Further, in this embodiment, the weighing scales 1a and 1b having the left and right independent weighing platforms 2a and 2b are provided, but as shown in FIG. 3, for example, a single weighing platform 2 is provided. It is also possible to adopt a configuration in which the axle load scale 1 including the weight scale is used. In this configuration, of the load cells 6a to 6d provided in the axle scale 1, the weight measured for the left wheel from the load cells 6a and 6b is obtained, and the load cells 6c and 6d are obtained.
The weight measured for the right wheel is obtained from d.
【００３４】図３の実施例の場合には、左右の車輪につ
いての正確な重量測定を行うため、貨物自動車２０を重
量計１ａ，１ｂ上の左右対象の位置に載せることが必要
である。本実施例では図３に示すように、路面４及び計
量載台２の上に通行帯３，３がペイント等によって描か
れてので、車輪を通行帯３，３上に載せて貨物自動車２
０を前進させることにより、左右の車輪を計量載台２上
の左右対象の位置に載せることができる。In the case of the embodiment shown in FIG. 3, it is necessary to mount the lorry 20 on the left and right symmetrical positions on the scales 1a and 1b in order to accurately measure the right and left wheels. In this embodiment, as shown in FIG. 3, the lanes 3 and 3 are drawn on the road surface 4 and the weighing platform 2 with paint or the like.
By moving 0 forward, the left and right wheels can be placed on the left and right symmetrical positions on the weighing platform 2.
【００３５】また、上記実施例では、左右方向の重心位
置を求めるために左右独立に重量を求めることができる
軸重計１を用いたが、前後方向の重心位置のみを求める
場合には、従来より使用されている一軸重量（左右の重
量の合計値）のみが測定できる軸重計を用いてもよい。
また、本実施例では後輪の車軸が１本の貨物自動車２０
について説明したが、後輪の車軸が２本以上の貨物自動
車についても同様に適用できる。この場合には、軸重計
１をもちいて３回以上の測定が行われるので、各測定値
を記憶するメモリを必要に応じて追加し、各演算もそれ
に対応して変更する必要がある。Further, in the above-mentioned embodiment, the axial gravimeter 1 which can independently determine the weight in the left and right direction is used to determine the center of gravity position in the left and right directions. It is also possible to use an axle load scale that can measure only the uniaxial weight (the total value of the left and right weights) that is used more.
Further, in this embodiment, a freight vehicle 20 having a single rear wheel axle is used.
However, the same applies to a freight vehicle having two or more rear axles. In this case, since the axial load meter 1 is used to perform three or more measurements, it is necessary to add a memory for storing each measurement value as necessary and change each calculation correspondingly.
【００３６】更に、上述の構成に加え、運転速度（制限
速度）、カーブの最小半径、路面の最悪条件等を第４メ
モリ１４に更に格納しておけば、各道路の条件に応じて
警告を発することができる。Furthermore, in addition to the above-mentioned configuration, if the operating speed (speed limit), the minimum radius of the curve, the worst condition of the road surface, etc. are further stored in the fourth memory 14, a warning is issued according to the condition of each road. Can be emitted.
【００３７】また、本実施例に於ける加算器７、第１及
び第２演算器１０，１１、比較回路１３、第１〜第４メ
モリ８，９，１２，１４の機能は、マイクロコンピュー
タによって実現し得ることは言うまでもない。Further, the functions of the adder 7, the first and second arithmetic units 10 and 11, the comparison circuit 13, and the first to fourth memories 8, 9, 12, and 14 in this embodiment are realized by a microcomputer. It goes without saying that it can be realized.
【００３８】[0038]
【発明の効果】本発明に係る重心位置検出機能を有する
積載重量計を用いれば、例えば高速道路の入り口で、積
載重量の測定と同時に前後方向及び左右方向の重心位置
のデータを求めることができるので、過積載、積荷の片
寄り等を生じている車両を容易に発見することができ
る。また、本発明によれば、前後方向の重心位置のデー
タを車種別の理想的重心位置のデータと比較することが
できるので、車種に応じた重心位置のズレを求めること
ができる。従って、本発明によれば、過積載、積荷の片
寄り等による道路の損傷や交通事故を大幅に減少させる
ことができる。EFFECTS OF THE INVENTION By using the loading scale having the function of detecting the position of the center of gravity according to the present invention, it is possible to obtain the data of the position of the center of gravity in the front-rear direction and the left-right direction at the same time as measuring the loaded weight at the entrance of a highway. Therefore, it is possible to easily find a vehicle in which overloading, uneven loading, and the like occur. Further, according to the present invention, since the data of the center of gravity position in the front-rear direction can be compared with the data of the ideal center of gravity position for each vehicle type, the deviation of the center of gravity position according to the vehicle type can be obtained. Therefore, according to the present invention, it is possible to significantly reduce road damage and traffic accidents due to overloading, uneven loading, and the like.
【図１】本発明の一実施例に係る重心位置検出機能を有
する積載重量計の概略構成図である。FIG. 1 is a schematic configuration diagram of a loading scale having a gravity center position detecting function according to an embodiment of the present invention.
【図２】前輪及び後輪の一軸荷重と前後方向の重心位置
との関係を示す図である。FIG. 2 is a diagram showing a relationship between a uniaxial load of front wheels and rear wheels and a center of gravity position in a front-rear direction.
【図３】本発明の他の実施例に係る重心位置検出機能を
有する積載重量計の平面図である。FIG. 3 is a plan view of a loading scale having a gravity center position detecting function according to another embodiment of the present invention.
【図４】左側及び右側の合計重量と重心位置との関係を
示す図である。FIG. 4 is a diagram showing the relationship between the total weight on the left and right sides and the position of the center of gravity.
１…軸重計 １ａ，１ｂ…重量計 ２，２ａ，２ｂ…計量載台 ３…通行帯 ４…路面 ５ａ，５ｂ…増幅器 ６，６ａ〜６ｄ…ロードセル ７…加算器 ８…第１メモリ ９…第２メモリ １０…第１演算器 １１…第２演算器（積荷片寄り検出手段） １２…第３メモリ １３…比較回路（重心位置ズレ算出手段） １４…第４メモリ（記憶手段） １５…重心位置決定手段 DESCRIPTION OF SYMBOLS 1 ... Axial scale 1a, 1b ... Scale 2,2a, 2b ... Weighing stand 3 ... Passage zone 4 ... Road surface 5a, 5b ... Amplifier 6,6a-6d ... Load cell 7 ... Adder 8 ... 1st memory 9 ... Second memory 10 ... First arithmetic unit 11 ... Second arithmetic unit (load piece deviation detection means) 12 ... Third memory 13 ... Comparison circuit (center of gravity position deviation calculation means) 14 ... Fourth memory (storage means) 15 ... Center of gravity Position determination means
Claims (6)
順次測定する軸重計と、 前記車両の前輪及び後輪の何れか一方の一軸重量と前輪
及び後輪の一軸重量を加算して求めた全重量と前輪及び
後輪の間の車軸間距離とに基づいて前記車両の前後方向
の重心位置を求める前後重心位置決定手段と、 を有することを特徴とする重心位置検出機能を有する積
載重量計。1. An axle load meter for sequentially measuring uniaxial weights of front and rear wheels of a vehicle, and a uniaxial weight of one of the front and rear wheels of the vehicle and a uniaxial weight of front and rear wheels are added. And a center-of-gravity position determination means for determining a center-of-gravity position in the front-rear direction of the vehicle based on the total weight obtained and the inter-axle distance between the front wheels and the rear wheels. Payload scale.
置を記憶する記憶手段と、 該記憶手段に記憶されている理想的重心位置と前記前後
重心位置決定手段で求めた重心位置とに基づいて前後方
向に於ける重心位置のズレを算出する重心位置ズレ算出
手段と、 を更に有することを特徴とする請求項１記載の重心位置
検出機能を有する積載重量計。2. The storage means for storing the ideal center-of-gravity position in the front-rear direction of each vehicle type, the ideal center-of-gravity position stored in the storage means, and the center-of-gravity position obtained by the front-rear center-of-gravity position determining means. The load weight scale having a gravity center position detecting function according to claim 1, further comprising: a gravity center position shift calculating means for calculating a shift in the center of gravity position in the front-rear direction.
ついて左右の車輪についての重量を独立に測定し得る軸
重計と、 該軸重計に於いて順次測定された各車輪についての重量
の全てを合計して求めた全重量と左側及び右側の何れか
一方の側に於ける前輪及び後輪についての重量の合計と
左右の車輪の幅とに基づいて前記車両の左右方向の重心
位置を求める左右重心位置決定手段と、 を有することを特徴とする重心位置検出機能を有する積
載重量計。3. An axle weight meter capable of independently measuring the weights of the left and right wheels of each of the front and rear axles of the vehicle, and the weight of each wheel sequentially measured by the axle weight meter. Based on the total weight obtained by summing all and the total weight of the front wheels and the rear wheels on either the left side or the right side and the width of the left and right wheels, determine the position of the center of gravity of the vehicle in the left-right direction. A load weight meter having a center-of-gravity position detection function, comprising: a right-left center-of-gravity position determining means.
の重量を合計して求めた全重量と、前輪及び後輪の何れ
か一方に於ける左右の車輪についての重量の合計と、前
輪及び後輪の間の車軸間距離とに基づいて、前記車両の
前後方向の重心位置を求める前後重心位置決定手段を更
に有することを特徴とする請求項３記載の重心位置検出
機能を有する積載重量計。4. The total weight obtained by adding the weights of all the wheels measured by the axle load scale, the total weight of the left and right wheels of either the front wheel or the rear wheel, and the front wheel. 4. The loaded weight having a center-of-gravity position detecting function according to claim 3, further comprising front-rear center-of-gravity position determining means for determining a front-rear direction center-of-gravity position of the vehicle based on an inter-axle distance between the rear wheels. Total.
置を記憶する記憶手段と、 該記憶手段に記憶されている理想的重心位置と前記前後
重心位置決定手段で求めた重心位置とに基づいて前後方
向に於ける重心位置のズレを算出する重心位置ズレ算出
手段と、 を更に有することを特徴とする請求項４記載の重心位置
検出機能を有する積載重量計。5. A storage unit for storing an ideal center-of-gravity position in the front-rear direction of each vehicle type, an ideal center-of-gravity position stored in the storage unit, and a center-of-gravity position obtained by the front-rear center-of-gravity position determining unit. The load weight scale having a center-of-gravity position detecting function according to claim 4, further comprising: a center-of-gravity position shift calculating unit that calculates a shift of the center-of-gravity position in the front-rear direction.
ついて重量を測定する独立した重量計を有することを特
徴とする請求項３乃至５の何れかに記載の重心位置検出
機能を有する積載重量計。6. The load having a center-of-gravity position detection function according to claim 3, wherein the axle weight scale has an independent weight scale for measuring the weight of each of the left and right wheels. Weight scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21257192A JP3164899B2 (en) | 1992-08-10 | 1992-08-10 | Loading scale with center of gravity detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21257192A JP3164899B2 (en) | 1992-08-10 | 1992-08-10 | Loading scale with center of gravity detection function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0658796A true JPH0658796A (en) | 1994-03-04 |
| JP3164899B2 JP3164899B2 (en) | 2001-05-14 |
Family
ID=16624908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21257192A Expired - Lifetime JP3164899B2 (en) | 1992-08-10 | 1992-08-10 | Loading scale with center of gravity detection function |
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| Country | Link |
|---|---|
| JP (1) | JP3164899B2 (en) |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006003291A (en) * | 2004-06-21 | 2006-01-05 | Katsuzo Kawanishi | Truck scale |
| JP2006010498A (en) * | 2004-06-25 | 2006-01-12 | Yamato Scale Co Ltd | Truck scale |
| JP2006112986A (en) * | 2004-10-18 | 2006-04-27 | Yamato Scale Co Ltd | Apparatus for measuring wheel weight |
| JP2007057304A (en) * | 2005-08-23 | 2007-03-08 | Omron Corp | System and method for measuring axle load |
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