JP4632733B2 - Weight measuring device - Google Patents

Description

  The present invention relates to a weight measuring device for vehicles having different weight measuring means during operation and different weight measuring modes corresponding to the respective weight measuring means.

  Conventionally, there is a truck scale as a representative weight measuring device for vehicles. The truck scale is configured to measure the weight of a vehicle such as a truck when the vehicle enters a weighing platform supported by a plurality of load cells. Such vehicle weight measurement can be used for commercial or production purposes, such as determining the weight of luggage loaded on a vehicle, or whether the vehicle's load weight exceeds an allowable value for vehicle load restrictions. This is done for the purpose of judging road management.

  By the way, what is a problem in road management is the weight of the axle called axle load, and on an expressway, an allowable upper limit value for the axle weight is provided. Moreover, as a device for measuring the axle weight, an axle weigh scale having a measuring platform dedicated to axle weight measurement, which has a structure in which one or more axes do not ride at the same time, has been put into practical use.

  On the other hand, various proposals have been made for a method of measuring each axle weight using a weight measuring device of a type in which the entire vehicle is placed on a weighing platform and measures the total weight of the vehicle (for example, patents). References 1, 2, 3). According to the axle weight measurement methods described in these documents, each axle is identified by the change in the measured weight that occurs each time the axle of the vehicle gets onto the weighing platform, and the weight of each axle is independently determined. It is supposed to measure.

JP-A-63-81220 JP-A-1-282430 JP-A-6-50801

By the way, the measurement of the total weight of the vehicle by the conventional weight measuring device is as follows.
(A) After the vehicle is completely on the weighing platform and stopped, in other words, after all the axles of the vehicle have completely entered the weighing platform, the vehicle stops on the weighing platform and the operator or driver displays the weight. Check the weight display that is continuously updated in the container,
(B) When the display value becomes stable and hardly changes, it is determined that the state is suitable for weight measurement,
(C) The printing command key attached to the weight display is manually operated by the operator to determine the weight measurement value as the vehicle measurement value and print the measurement result on a predetermined sheet such as a slip. Then, commercial transactions are performed based on the measured values. Note that a method of determining a measured value of a vehicle by an operator's hand is called manual measurement.

  In addition, since it may be misunderstood whether the display value is stable or not by visual confirmation by humans, it is determined whether or not a plurality of weight measurement values continuously obtained in time series in the weight measurement device are stable. Judgment is made by the stability determination logic operation, and only when it is determined that the state is stable by the stability determination logic operation, the operation of the print key by the operator / driver is considered valid and the weight measurement value is confirmed and printed. Is often used to complete the measurement of the total weight of the vehicle. A mode in which the weight measurement value is continuously measured regardless of the change in the weight signal is referred to as a static measurement mode.

  However, when measuring the axle weight of all axles with a weight measuring device having only the static measurement mode, the operator / driver stops the vehicle every time the axle gets on the weighing platform, and the operator / driver displays the displayed weight value. In the case of a vehicle having many axles, there is a problem that it takes time until the measurement of the total weight and the total axle weight of the vehicle is completed. When measuring the weight of a large number of vehicles, there is a problem that the waiting time of each vehicle becomes long.

  Therefore, in normal measurement work, the axle load needs to be measured in the process of getting on the weighing platform while the vehicle is traveling. However, when measuring the axle weight of the vehicle in the running state in the static measurement mode, the display weight value is greatly changed before the next axle gets on the weighing platform before the display weight value is stabilized. There is a problem that a large error occurs in the obtained value (axial weight).

  Therefore, the time domain in which the weight of a specific axle can be measured is confirmed by detecting the amount of change in weight, rate of change in weight, etc., from when the target axle gets on the weighing platform to when the subsequent axle gets on. A method of automatically determining a weight measurement value based on a sampling weight value extracted in the time domain to obtain an axle weight measurement value is proposed in Patent Document 2 and the like. Note that a measurement mode in which one weight measurement value is obtained from a weight signal that satisfies a condition suitable for weight measurement by detecting a dynamic weight value change state or the like is referred to as a dynamic measurement mode. A method for determining the weight measurement value obtained in the dynamic measurement mode as a vehicle measurement value is called automatic measurement.

  According to a weighing mode having only a dynamic measurement mode, ie, a measurement mode having means for automatically generating a weight measurement value based on a sampled weight value extracted within a time range in which weight measurement is possible, a short time is required. Therefore, it is necessary to set a condition to determine the stability of the weight signal in a short time domain. Therefore, the obtained measurement result is not necessarily an accurate value and lacks reliability. There is a problem. In addition, since there is no function to confirm that the weight measurement value is stable, it is not possible to confirm the weight measurement value by the person involved in the transaction such as a driver or an operator, and to evaluate the accuracy of the weight measurement value, There is a problem that it cannot be used as data for proof of transaction.

  The present invention has been made to solve such a problem, and a single device is used to measure the axle weight and the total weight of a vehicle according to the operation of the vehicle during the weight measurement of one vehicle. It is an object of the present invention to provide a weight measuring apparatus that can accurately measure with high accuracy.

In order to achieve the above object, the weight measuring device according to the first invention comprises:
In a weight measuring device including a weighing platform on which an entire vehicle having a plurality of axles can be loaded, and a load detector disposed below the weighing platform,
A weight display means for displaying the weight measurement value of the axle on the weighing platform, an automatic measurement means for automatically determining the weight measurement value as a measurement value, and the weight measurement value displayed on the weight display means are stable There are two types of measurement means including manual measurement means for manually determining the weight measurement value displayed on the weight display means as a measurement value when in the state, and the axle weight or the entire vehicle according to each measurement means The weight of the vehicle can be determined as a measured value, and during the weight measurement of one vehicle , the one axle from when one axle gets on the weighing platform until the next axle gets on the weighing platform. measuring the time spent on the weighbridge of the axle, when the staying time is longer than the timer time set in advance, until timeout of the timer time is performed it is the automatic measuring device, the timer After timeout between is characterized in that the manual measuring device is carried out.

In the first aspect of the present invention, a dynamic measurement mode for automatically detecting a time region in which a weight signal can be measured and generating a weight measurement value in the time region, and continuously measuring the weight signal and continuously weighing the weight signal. A static measurement mode for generating a measurement value, and when the processing by the automatic measurement means is performed, the weight measurement value generated by the dynamic measurement mode is determined as the measurement value, and the manual measurement is performed. when the processing by the means is performed, the from the displayed weight measurements produced the weight display means by the static measurement mode for you determine the metric preferred (second invention).

In the second aspect of the invention, the weight display means includes first display means for displaying the total weight or net weight of the vehicle, and second display means for displaying the axle weight, and at least the first display means. It is preferable that the weight measurement value generated in the static measurement mode is output, and the weight measurement value generated in the dynamic measurement mode is output to at least the second display means. 3 invention).

In the second aspect of the invention, a first allowable limit value that is a determination criterion for an axle weight measurement value in the dynamic measurement mode and a second allowable limit value that is a determination criterion for an axle weight measurement value in the static measurement mode Is set, and the axle weight measurement in the static measurement mode is performed only when the result of the axle weight measurement in the dynamic measurement mode exceeds the first allowable limit value. When the axle weight measurement result exceeds the second allowable limit value, it is preferably determined that the axle weight is over ( fourth invention).

According to the first aspect of the present invention, two types of measuring means, that is, an automatic measuring means and a manual measuring means are provided, and any measuring means can be selected during the weight measurement of one vehicle. It is possible to automatically make a manual measurement possible depending on the operation state. That is, in normal weighing operation, the vehicle weight needs to be measured while the vehicle is running, and the measured value must be obtained as accurately as possible in a short time, and the weight measurement value generated by the dynamic measurement mode is The process of automatically confirming the measured value at the time when the axle is placed on the weighing platform is performed. On the other hand, according to the present invention, the total weight of the vehicle can be manually measured without determining the weight measurement value by dynamic measurement as the measurement value in a state where all the axles of the vehicle are stopped on the weighing platform. Since the weight measurement value generated in the static measurement mode can be determined by manual measurement, higher accuracy can be obtained. In short, when measuring the weight of a single vehicle with a single weighing device, the axle and total weight can be measured accurately and quickly by selecting suitable measuring means according to the operating state of the vehicle. Can do.

Also, the according to the second invention, when the process by the automatic measuring means is carried out, weighed with a weight measurement value generated in measurable its time domain time domain is automatically detected weight signal When the value is confirmed and the processing by the manual measurement means is performed, the measurement value is confirmed from the weight measurement values displayed on the weight display means, so that the length of the stable region of the weight signal is set. Accordingly, highly accurate measurement can be performed.

Further, if the configuration of the third invention is adopted, it is possible to visually check whether the total weight of the vehicle, the axle weight of each axle, etc. are the weights in an appropriate measurement mode, so that the total weight of the vehicle in particular. On the other hand, high reliability sufficient for use in transaction proof can be imparted.

According to the fourth aspect of the present invention, the criterion (first allowable limit value) for determining whether or not the second measurement (in the static measurement mode) of each axle weight is performed, and whether or not the axle is overweight. This will introduce a clear criterion (second permissible limit value), so it is possible to reliably prevent unnecessary delays in vehicle measurement due to the second axle weight measurement, and the axle is overweight. It is possible to more accurately determine whether or not

  Next, specific embodiments of the weight measuring device according to the present invention will be described with reference to the drawings.

  FIG. 1 shows a plan view (a) and a side view (b) of the weight measuring device according to the first embodiment of the present invention. Further, FIG. 2 shows a circuit configuration diagram of the weight measuring device of the present embodiment.

  The weight measuring device 1 according to the present embodiment includes a total weight of a vehicle 2 including three axles 2a, 2b, and 2c that travels from left to right in FIG. 1 and the axles 2a, 2b, and 2c. Used to measure weight (axle weight). In the following description, the first axle 2a, the second axle 2b, and the third axle 2c will be referred to in order from the axle 2a located at the front of the vehicle 2.

  The weight measuring device 1 includes a weighing unit 3 and a weight signal measuring unit 4 (not shown in FIG. 1B). Here, the measuring unit 3 has such a size that all the wheels 2a ′, 2a ′; 2b ′, 2b ′; 2c ′, 2c ′ on both ends of the axles 2a, 2b, 2c of the vehicle 2 can ride simultaneously. A weighing table 5 and a total of four load cells (load detectors) 6a, 6b, 6c, 6d provided at the four corners below the weighing table 5 are provided.

  Further, as shown in FIG. 2, the weight signal measuring unit 4 includes first to fourth amplifiers 7a, 7b, 7c for amplifying weight signals transmitted from the load cells 6a, 6b, 6c, 6d, respectively. , 7d and a fifth amplifier (adder circuit) 8 for summing weight signals from the amplifiers 7a to 7d.

  The fifth amplifier 8 is connected to an arithmetic processing unit (CPU) 13 through an analog filter 9, an analog / digital converter (A / D converter) 10, a primary digital filter 11 and an I / O unit 12. Yes. As a result, the weight signal output from the fifth amplifier 8 is converted into a time-series digital weight signal with a sampling period Δt = 1 msec after the high frequency noise is removed by the analog filter 9 and the A / D converter 10. The line nozzle included in the time-series digital superposition signal is removed by the primary digital filter 11 and input to the arithmetic processing unit 13 via the I / O unit 12.

  Here, the primary digital filter 11 is a kind of digital filter that performs a moving average calculation by 16 or 20 in time series every time a digital weight signal is supplied. A time-series digital weight signal that is continuously output by the A / D converter 10 every 1 msec and noise is removed by the primary digital filter 11 is referred to as a sampling weight value.

  The arithmetic processing unit 13 is configured to execute a required arithmetic process by executing a required program. The arithmetic processing unit 13 is connected to a memory 14 for storing the program and various data, and has an input unit 15 having various key switches (not shown) via the I / O unit 12, arithmetic processing. It is connected to a display unit 16 for displaying results (total weight of the vehicle 2, axle weights of the axles 2a, 2b, 2c, etc.) and a printing unit (printer) 17 for printing transaction slips.

In the calculation area of the arithmetic processing unit 13, a function (counter number counter Cm) for counting the number of axles on the weighing platform 5, a dynamic measurement value register for temporarily storing dynamic measurement values, A function (axle total weight register) for temporarily storing in the memory 14 weight measurement values (axle total weight) of all axles on the weighing platform 5 is provided. The axis number counter Cm is cleared when the power is turned on or when measuring near the zero point, but when a weight measurement value in a dynamic measurement mode (described later) is generated,
Cm = Cm + 1
Thus, the axis number counter Cm is configured to count up. The axle total weight register is cleared when the measured weight of the weighing platform 5 is near zero, such as before the measurement of the vehicle 2 or before the vehicle weight measurement, when the power is turned on. Each time the total axle weight is measured in the dynamic measurement mode or the static measurement mode, the value is stored in the memory 14.

  Further, the input unit 15 manually measures the total weight of the vehicle 2 and the net weight of the load, and prints the total weight on the transaction slip and the like, and the static weight of each axle 2a, 2b, 2c. Various input keys for various operations such as an axle weight measurement key for obtaining an accurate measurement value based on the measurement value are provided.

  The display unit 16 includes a total weight indicator (first display means) for displaying the total weight of the vehicle 2 and the net weight of the cargo obtained by subtracting the tare weight of the vehicle 2 from the total weight, and a single shaft 2a. ~ Axle weight indicator (second display means) for displaying the axle weight of each of the three axes 2c. The total weight indicator and the axle weight indicator do not necessarily have to be separate devices, and the total weight of the vehicle 2 and the weights of the axles 2a, 2b, and 2c are displayed in separate display areas in one display device. Each of them may be displayed.

  In the present embodiment, the weight measuring device 1 mainly measures the total weight, the tare weight, and the load weight of the vehicle 2 and presupposes a static measurement mode for determining the measured value and the static measurement mode. 2 each of the manual measurement means, the dynamic measurement mode for measuring the weights of the respective axles 2a, 2b, and 2c of the vehicle 2 and determining the measurement values, and the automatic measurement means based on the dynamic measurement mode. There are two types of measurement modes and two measurement means.

  The static measurement mode is a measurement mode in which the weight measurement of the vehicle 2 in a stopped state or a substantially stopped state is performed with priority given to accuracy, and the sampling weight value is set at regular time intervals Tssec (≦ 1 sec). This is a measurement mode in which the average value is obtained and the weight measurement value, which is the average value, is continuously displayed and updated on the total weight indicator as the display weight value (static measurement value) based on the measurement method. Further, according to the static measurement mode, whether or not the static measurement value is in a stable state by operating the total weight print key or the axle weight measurement key (that is, the measurement result varies). The stability determination logic program for determining whether the static measurement value is not generated) is executed in the arithmetic processing unit 13 and it is determined that the static measurement value is in a stable state. Confirm as an accurate weighing value. This operation is called manual measurement, and means for performing this operation is called manual measurement means. Only when it is determined that the static measurement value is stable, the key operation of the print key or the measurement key of the input unit 15 is validated, and the static measurement value at the time of the key operation is printed as the measurement value. Printing is performed from the portion 17. Here, the stability determination logic program stores and compares the three static measurement values output every Tssec in order from the latest value to the oldest, and these three static measurement values are the most. It is a program that determines that a new static measurement value is stable if it is within ± 1 unit of the minimum display unit of the total weight display. Note that it is also possible to determine whether or not the static measurement value is in a stable state using other various determination methods.

  In such manual measurement means and static measurement mode, the static measurement value when the stable state is confirmed by the stability determination logic program is adopted as the measurement value, so that measurement errors and the like are hardly reflected in the result. There are features. Further, the static measurement value obtained every Tssec is displayed / updated on the total weight display, so that the operator can visually check whether the static measurement value is in a stable state. Therefore, there is a feature that high reliability can be given to the obtained result. Therefore, the manual measurement means and the static measurement mode are particularly suitable for obtaining the total weight of the vehicle 2 and the net weight of the load, which are required to be highly accurate and reliable.

  On the other hand, in the dynamic measurement mode, a time region in which the weight of the vehicle 2 in the running state can be measured (described later; regions indicated by A, B, and C in FIG. 3) is confirmed from the fluctuation of the sampling weight value. This is a measurement mode in which an average value of sampling weight values obtained every predetermined time interval (1 msec in the present embodiment) in the time domain is taken and the average value is generated as a measurement value (dynamic measurement value). The measurement method that automatically determines the weight measurement value (dynamic measurement value) generated in the dynamic measurement mode as the measurement value of the object to be weighed is called automatic measurement, and the means for performing this automatic measurement is automatic. It is called measurement means. In the automatic measurement means and the dynamic measurement mode, since the weight of the traveling vehicle 2 is measured, there is an effect that the measurement can be performed quickly. Further, as described above, the average value of the sampling weight values obtained in the time domain in which the weight measurement is possible is employed as the measurement value, so that there is an advantage that a certain degree of reliability can be placed on the measurement result. Therefore, it is only necessary to know whether the automatic measurement means and the dynamic measurement mode are sufficiently lower than the upper limit value We determined in road management, and each axle 2a, 2b, 2c that requires speed rather than accuracy is required. It is particularly suitable for measuring the axle weight.

  Next, a method for measuring the total weight of the vehicle 2 having the three axles 2a, 2b, and 2c and the axle weight of each of the axles 2a, 2b, and 2c will be described with reference to FIGS. In the following description, it is assumed that the vehicle 2 has already obtained the tare weight (vehicle weight when the load is empty) by manual measurement in the static measurement mode.

  FIG. 3 is a diagram showing a waveform drawn by a sampling weight value generated by the weight signal measuring unit 4 during vehicle measurement. FIG. 4 shows a measurement procedure by the weight measuring apparatus 1 of the present embodiment. FIG. 5 shows a part of the flowchart for showing, and FIG. 5 shows the remaining part of the flowchart for showing the procedure.

[Steps A101 and A102]
Before the vehicle 2 gets on the weighing platform 5, the axis counter Cm is cleared and Cm = 0, and the initial value (= 0) of the dynamic measurement value is stored in the memory 14. The axle total weight register also stores an initial value (= 0). The weight signal measuring unit 4 operates in the static measurement mode (1), and obtains a static measurement value by taking an average value of the sampling weight values every fixed time interval Tssec (≦ 1 sec). Static measurement values are output to the total weight indicator as display weights based on the measurement method. Furthermore, the weight displayed on the total weight display for static measurement is updated every Tssec, and the operator or the like can visually check the change in the measured weight on the weighing platform 5 on the total weight display. Doing so makes it easy to recognize. In this state, the vehicle 2 is moved forward.

[Step A103]
In the weight signal measurement unit 4, in parallel with the generation of the static measurement value in the static measurement mode (1), the minimum value wmin and the maximum value wmax of the sampling weight value sequentially generated in time series are stored in the memory 14. (The first wmin and wmax are the sampling weight values generated first), and each time a new sampling weight value is generated, the sampling weight value and the minimum value wmin stored in the memory 14 are stored. Is compared with the maximum value wmax, and when the generated sampling weight value is smaller than the minimum value wmin, the sampling weight value is stored as a new minimum value wmin. Store as maximum value wmax. Then, when a new wmax is stored, that is, whenever the maximum value wmax is updated, wmax−wmin> Wh (set value) (i)
Check whether or not holds.

[Step A104]
If the above formula (i) is established, it is determined that the sampling weight value has greatly changed due to the start of getting on the weighing platform 5 of the leading axle (1 axis 2a) at the establishment time t = t1, and the weight The measurement value generation means is switched from the static measurement mode (1) to the dynamic measurement mode (2) (see X1 in FIG. 3). At the same time, the maximum value wmax and the minimum value wmin of the sampling weight value are cleared.

[Step A105]
A sampling weight value w (t1 <n>) is acquired at an arbitrary timing t1 <n> after switching to the dynamic measurement mode (2) after time t = t1, and this sampling weight value w (t1 <n). >) And the sampling weight value w (t1 <n + 1>) obtained at the next timing t1 <n + 1>) are compared each time the sampling weight value is generated. Since the weight value indicated by the weight signal measurement unit 4 is monotonically increasing from the time when the loading of the axle 2a of the vehicle 2 is considered to start (time t = t1) until the loading is completed, the above formula (i ) For the first time after the following equation is established: w (t1 <n + 1>) <w (t1 <n>) (ii)
At the time t1 <n + 1> when is established, the first maximum value of the weight value wm1 = w (t1 <n + 1>)
Is obtained, the timer T0 starts counting. Since the sampling weight value is generated at regular time intervals (1 msec), if the number of generated sampling weight values is counted, a timer count is obtained.

  A predetermined value is set as the value of the timer T0, and the sampling weight value generated until the timer T0 times out is not reflected at all in the measurement result of the subsequent dynamic measurement mode. It has become. As a result, it is possible to avoid that an extremely large and transient vibration signal immediately after the single shaft 2a is placed on the weighing platform 5 is reflected in the measurement result in the subsequent dynamic measurement mode (2). .

[Step A106]
After the timer T0 is up (time t = t01), the timer T1 starts counting this time. The duration of the timer T1 is set to a time that allows the weights of the axles 2a, 2b, and 2c to be measured with sufficient accuracy. Also in the timer T1, if the number of sampling weight values generated is counted, the timer count is obtained. When the timer T1 is activated, in parallel with the timer count, sampling weight values generated after the activation time t = t01 of the timer T1 are sequentially stored in the memory 14 in time series. In parallel with the timer count of the timer T1, the minimum value wmin and the maximum value wmax of the sampling weight values generated after t = t01 are updated in the same manner as described above.

[Steps A107 and A108]
Prior to the time-up of the timer T1, it is checked whether or not the maximum value wmax and the minimum value wmin of the sampling weight value satisfy the formula (i), that is, whether or not the subsequent axle (two-axes 2b) has boarded. . If the equation (i) is established prior to the time-up of the timer T1, the process of step A118 is performed (described later). On the contrary, when the above (i) is not established, the weight measurement value generation mode is switched from the dynamic measurement mode (2) to the static measurement mode (3).

  In the present embodiment, as shown in FIG. 1, since the distance from the first shaft 2a to the second shaft 2b of the vehicle 2 is long, the formula (i) is established (establishment time t = t2). Before the timer T1 is timed up (established time t = t11), the process of step A108, that is, switching from the dynamic measurement mode (2) to the static measurement mode (3) is performed. Even when the vehicle 2 is stopped when the single shaft 2a gets on the weighing platform 5, since the change in the weight signal is small, the equation (i) does not hold, and the timer T1 expires. .

[Step A109]
When the time-up of the timer T1 is established first, the time when the sampling weight value becomes the minimum at the timing closest to the time-up of the timer T1 (t = t11) is checked in the section of t = t01 to t11. . In order to do this, the sampling weight value w (t1 <k>) at an arbitrary point in time from t = t01 to t11, the previous sampling weight value w (t1 <k-1>), and one more The previous sampling weight value w (t1 <k-2>) is expressed by the following inequality (iii)
w (t1 <k>)> w (t1 <k-1>),
w (t1 <k-1>) <w (t1 <k-2>) (iii)
Whether or not the condition is satisfied is sequentially examined retroactively by one sampling interval (1 msec) from t11. As a result, within the interval between t01 and t11, the time t = t1 <at which the sampling weight value indicates the minimum value w (t1 <k−1>) at the timing closest to the time point up of the timer T1 (t = t11). k-1> is obtained.

  Next, an average value of all sampling weight values generated in the section between t = t01 and t1 <k-1> (indicated by A in FIG. 3) and stored in the memory 14 is taken, and this value is moved. Measured value. Thus, a dynamic measurement value is automatically obtained.

[Step A110]
When the dynamic measurement value is generated, the dynamic measurement value stored in the memory 14 is called, and the current dynamic measurement value is stored in the memory 14 instead.

[Steps A111, 112]
When the value of the axis number counter Cm is determined and Cm = 0, that is, in the case of one axis 2a, Cm = Cm + 1 is incremented by 1, and the process returns to step A103 to start measurement of the next axle load. If Cm ≠ 0, the process proceeds to the next step A113. In this embodiment, after acquiring the dynamic measurement value based on the sampling weight value, the step does not immediately determine the target axle weight, but after acquiring the dynamic measurement value for the axle in the next row, The processing after A113 is performed to obtain the target axle weight. In other words, when the axle weight of the target axle (for example, Cm axis) is obtained, the dynamic measurement value of the rear axle (in this case (Cm + 1) axis) is already acquired. Further, when the subsequent steps A113 and subsequent processes are performed to determine the axle weight of the Cm axis, the total weight from the 1st axis to the Cm axis is called from the memory 14, and the total from the 1st axis 2a to the (Cm + 1) axis The weight will be stored in the memory 14.

  Hereinafter, a method for measuring the axle weight based on the dynamic measurement value will be described. In terms of the flow of the flow, the method of measuring the axle weight for the single shaft 2a should be described. However, the flow of steps A113 to A116 is repeated for the two shafts 2b and the three shafts 2c. Therefore, in order to avoid complicated explanation, a method for measuring the axle weight for an unspecified axle (number of axles = Cm) will be described.

[Step A113]
In this step, the axle weight of the Cm axis is obtained as follows. In the axle total weight register, a total weight measurement value from the first axis 2a to the (Cm-1) axis is stored (see step A116 later).

In the previous step A110, the total weight (dynamic measurement value) from the 1 axis 2a to the Cm axis called from the memory 14 and the 1 axis 2a to the (Cm-1) axis stored in the axle total weight register. Based on the measured value of the total weight (the weight of one axis 2a in the case of Cm = 2) and the following formula: the total weight of the Cm axis from the first axis 2a (dynamic measurement value)-the value of the total axle weight register, the Cm axis Find the axle weight value. In addition, when calculating | requiring the axle weight of 1 axis | shaft 2a, the total weight (in this case, the dynamic measurement value of only 1 axis 2a) called from the memory 14 is employ | adopted as axle weight. In this case, the total weight called from the memory 14 is a dynamic measurement value of only one shaft 2a, and the value stored in the axle total weight register is an initial value (= 0).

[Steps A114 and A115]
The dynamic measurement value of the total weight of the 1-axis 2a to Cm-axis called from the memory 14 and the determined axle weight value are determined as measurement values, respectively, and this value is set as an axle weight indicator according to the value of Cm. Supplied to the printing unit 17. This operation is called automatic measurement, and means for performing this operation is called automatic measurement means. Further, the dynamic measurement value (measurement value) of the total weight from the one axis 2a to the Cm axis called from the memory 14 is entered in the total axle weight register.

[Step A116]
The axis number counter Cm is incremented by +1. After the timer T1 has expired, that is, after switching to the static measurement mode (3), the average value of the sampling weight values that are output continuously for each Tssec is generated as a static measurement value, and the total weight is displayed. It may be supplied to the vessel.

[Step A117]
When all the axles 2a, 2b, 2c are on the weighing platform 5, the process proceeds to the next step A119. If the axles 2a, 2b, and 2c are not on the weighing platform 5, the subsequent axles enter and return to step A103.

[Steps A103 to A105 (second order)]
Next, a series of processing that is performed when the two shafts 2b get in will be described. When the formula (i) is established, it is considered that the two axes 2b have entered the weighing platform 5, and the measurement mode is switched to the dynamic measurement mode (4). Next, in the same manner as when the 1-axis 2a gets on the weighing platform 5, after the 2-axis 2b gets on the weighing platform 5 (after time t = t2), the sampling weight value is first maximized (wm2 = w (T2 <n + 1>)) is obtained (t = t2 <n + 1>), the timer T0 starts counting from that time (t = t2 <n + 1>), the maximum value wmax of the sampling weight value, and the minimum Clear the value wmin.

[Step A106, A107 (second order)]
After the timer T0 has timed up, the timer T1 starts counting in the same way as when the single axis 2a enters, and all sampling weight values obtained after t = t02 are stored in the memory 14 in time series. Then, the update of the maximum value mwax and the minimum value mwin of the sampling weight value is started again, and it is checked whether or not the equation (i) is satisfied. As in the present embodiment, in the case of the vehicle 2 in which the 2 axis 2b and the 3 axis 2c approach each other (see FIG. 1), or when the traveling speed of the vehicle 2 is fast, the 3 axis 2c is moved after the 2 axis 2a gets in The time until boarding is short, and the equation (i) is established at the timing t = 3 prior to the time-up of the timer T1 (see X3 in FIG. 3). In this case, the timer T1 is reset, the dynamic measurement mode (4) is continued without switching to the static measurement mode, and the process of step A118 is performed.

[Step A118]
From the time t = t3 when the equation (i) is established, the time when the sampling weight signal is minimal at the timing closest to t = t3 goes back to the count start time t = t02 of the timer T1 in the same manner as described above. Then, from the time t = t2 <k-1> indicating the minimum (w (t2 <k-1>)) to the count disclosure time (t = t02) of the timer T1 (indicated by B in FIG. 3). The average value of the sampling weight values generated in step (3) is obtained, and the process proceeds to step A110 as the dynamic measurement value generated in the dynamic measurement mode.

[Steps A110, A111, A113 to A116 (second order)]
Thereafter, the same processing as described above is performed to determine the axle weight of the two shafts 2b.

[Step A117 (second order)]
Since all the axles are not yet on the weighing platform 5, the process returns to the previous step A103.

[Steps A103 to A107 (third order)]
As shown in FIG. 3, when the three-axis 2c gets in, at t = t3, the maximum value wmax and the minimum value wmin of the sampling weight value satisfy the equation (i) (step A107 (second order ), And at the time t = t3, it is determined that the following axle (3 axis 2c) has entered the weighing platform 5. The measurement mode is also maintained as the dynamic measurement mode (4). Next, the time when the sampling weight value reaches the maximum (wm3 = w (t3 <n + 1>)) after the time t = t3 when the formula (i) is established, the 1 axis 2a and the 2 axis 2b are on the weighing platform 5. A check is made in the same manner as when boarding, and the timer T0 starts counting at the time t = t3 <n + 1>. After the timer T0 expires, the timer T1 starts counting at time t = t03. In the case of this embodiment, since there is no axle following the three-axis 2c, the timer T1 is timed up without satisfying the expression (i).

[Steps A108 to A111, A113 to A117 (third order)]
After the timer T1 expires, the measurement mode shifts to the static measurement mode (5) as in the measurement of the first axis 1a. Next, the time (t = t3 <k−1>) at which the sampling weight value becomes the minimum at the timing closest to the timer T1 until the timer T1 expires (t = t03 to t31) is measured on the one axis 2a. Based on the sampling weight value obtained between t = t03 and t3 <k-1> (indicated by C in FIG. 3), the dynamic measurement values (1 axis 2a to 3 axes) 2c total axle weight, that is, the total weight of the vehicle 2). Hereinafter, in the same manner as described above, the dynamic measurement value of the total weight from the first axis 2a to the Cm axis and the axle weight value of the Cm axis (in this case, the third axis 2c) are obtained and determined as the measured values, A shaft weight indicator corresponding to the value of Cm and the printing unit 17 are supplied, and the measured value of the total weight is entered in the axle total register. In this state, since all the axles 2a to 2c are in the weighing platform 5, the process proceeds to step A119.

  In the present embodiment, in order to ensure accuracy, the vehicle 2 is put on standby with all the axles 2a, 2b, 2c getting on the weighing platform 5, the timer T1 is timed up, and the measurement mode is dynamic measurement. Waiting for the mode (4) to switch to the static measurement mode (5), the total weight of the vehicle 2 is measured by the static measurement mode (5). Hereinafter, measurement of the total weight of the vehicle 2 in the static measurement mode will be described.

[Step A119]
After switching to the static measurement mode (5), the average value of the sampling weight values is taken every fixed time interval Tssec (≦ 1 sec), and the average value is supplied as a static measurement value to the total weight indicator. To display. In addition, the total weight indicator updates the display content each time a new static measurement value is sent, allowing the operator to visually check whether the static measurement value is stable. To do. Further, the arithmetic processing unit 13 executes the above-described stability determination logic program when the total weight print key is operated, and determines whether or not the display weight values sequentially generated are stable.

[Step A120]
When the operator confirms that the total weight display is stable and operates the total weight print key of the input unit 15, the stability determination logic program determines that the static measurement value is stable. The static measurement value at the time is determined as the measurement value. This measured value is supplied to the printing unit 17 as an accurate total weight of the vehicle 2. Further, if necessary, the net weight of the load obtained by subtracting the tare weight of the vehicle 2 from the total weight is supplied to the printing unit 17. If the stability determination is not established at the time when the total weight print key is operated, wait until the stability determination is established, and the static measurement value determined at the time of establishment is used as the total weight measurement value. 17 is supplied. The printing unit 17 prints the total weight of the vehicle 2, the net weight of the cargo, etc. on a transaction slip or the like.

[Step A121]
At this time, the static measurement value (total weight of the vehicle 2 obtained in the static measurement mode) and the total axle weight value of the first axle 2a and the second axle 2b stored in the axle total weight register and static The weight of the three shafts 2c may be obtained by calculating the target measured value-the total weight value of the axles = the weight of the three shafts 2c, and supplied to the axle weight indicator and the printing unit 17 corresponding to the number of shafts Cm = 3. Here, since the dynamic measurement value is stored in the axle total weight register, the weight of the three shafts 2c obtained in this step is also the dynamic measurement value.

[Step A122]
When the total weight printing key is operated and printing by the printing unit 17 is completed, the entire measurement process of the vehicle 2 is completed. The value of Cm is transferred to a counter Cn for use during manual measurement of the axle weight when the axle descends from the weighing platform 5. The axle total weight register and the axle number counter Cm are cleared in conjunction with the key operation of the gross weight printing key.

[Step A123]
By the way, the axle weight by the dynamic measurement value may be measured smaller than the actual weight due to a measurement error. This measurement error amount is larger than that due to static measurement values. Therefore, when determining the size of the axle weight, the axle weight allowable limit value Wed for determining the dynamic measurement value is smaller than the axle weight allowable limit value Wes for determining the static measurement value. Is used.

  Each axle weight of each axle 2a, 2b, 2c is compared in magnitude with an allowable limit value Wed based on a dynamic measurement value that is smaller than a preset allowable limit value Wes based on static measurement. If the weight value is larger than Wed, the axle weight may exceed the allowable value, so the target axle number and a warning for prompting re-weighing are displayed on a predetermined axle load indicator. At this time, it is preferable to display an alarm on an external alarm indicator to inform the driver that the allowable value may be exceeded. At the same time, an excess amount with respect to the legal reference value of the axle weight may be displayed.

[Step A124]
When the vehicle 2 gets off the weighing platform 5, the measured value of the total weight of the vehicle 2 is stored in the memory 14 in preparation for static measurement (described later) of the axle weight.

  In this embodiment, for the purpose of ensuring a certain degree of accuracy with respect to the axle weight, even if one axle gets on the weighing platform 5 and obtains a dynamic measurement value, it is not immediately determined as a measurement value. After the next axle gets in, the axle weight is determined as the measured value. However, if the total axle weight for obtaining each axle weight is all obtained from the dynamic measurement value, each axle is put on the weighing platform 5 and the dynamic measurement value is obtained. The weight may be determined as a measured value.

  As described above, in this embodiment, no matter what speed the vehicle 2 gets on the weighing platform 5, the calculation of the vehicle 2 and the axles 2a, 2b, and 2c is performed by performing the calculation according to the above equation (i). It is determined that the vehicle 5 is on the platform 5, and a time area that can be measured on the weighing platform 5 of each axle 2 a, 2 b, 2 c is obtained, and each axle 2 a, a sampling weight value generated in this time domain is used. The axle weights 2b and 2c are determined. Accordingly, there is no need to stop the vehicle 2 in the process of determining the axle weight of each axle 2a, 2b, 2c, so that the weight measurement of each axle 2a, 2b, 2c can be performed quickly. Further, when the measurable time of the axles 2a, 2b, and 2c is sufficiently long (when the time-up of the timer T1 is established before the subsequent axle boarding), on the weighing platform 5 in the static measurement mode The total axle weight can be displayed.

  In addition, as for the total weight of the vehicle 2, a strict weight value is obtained by the static measurement mode (5), and whether or not the weight value is in a stable state is visually checked by the operator and a stability determination logic. It can be determined by the program. Therefore, the total weight of the vehicle 2 obtained in this way has sufficient accuracy and reliability that can be used for transaction proof.

  In the present embodiment, static measurement can be performed after a certain period of time after the axle has entered the weighing platform 5, so that axle weight measurement while traveling is described. When it is necessary to measure strictly and there are few following vehicles, the vehicle is stopped whenever each axle 2a, 2b, 2c gets in, and a static measurement value of the axle weight of each axle 2a, 2b, 2c is obtained. Needless to say, it is possible to use a conventional method of determining the static measurement value as a measurement value by manual measurement.

  Next, a second embodiment of the present invention will be described. In this embodiment, the basic configuration is basically the same as that of the previous embodiment, and therefore, the description of the same configuration as that of the previous embodiment is omitted.

  In the present embodiment, the arithmetic processing unit 13 performs the static measurement mode to generate a static measurement value based on the sampling weight value, and the dynamic measurement mode to execute the dynamic measurement value. Operations to be generated are performed in parallel.

  First, the static measurement mode is continued regardless of the change in the sampling weight value, and the average value (static measurement value) of the sampling weight values is obtained at regular time intervals Tssec, and sequentially displayed on the total weight display. It is updated so that a visual check can be made as to whether or not the weight measurement value by the operator / driver is stable, and the obtained value can be used for transaction proof.

  On the other hand, when it is determined that the first shaft 2a of the vehicle 2 has entered the weighing platform 5 by the determination based on the formula (i), measurement in the dynamic measurement mode is performed in parallel with the static measurement mode. Let Hereinafter, similarly to the above-described embodiment, the dynamic measurement value of the axle weight of each axle 2a, 2b, 2c is obtained by the dynamic measurement mode. Then, the dynamic measurement value is determined as a measurement value by automatic measurement.

  The axle weights of the respective axles 2a, 2b, and 2c thus obtained are supplied to and displayed on the axle weight indicators corresponding to the respective axle numbers. When it is desired to measure the axle weight as accurately as possible, the static measurement mode is used. It is also possible to measure the axle weight according to and to determine the measured value by manual measurement.

When measuring the axle weight in the static measurement mode, the vehicle 2 is stopped after the axle 2a gets on the weighing platform 5, and the static measurement value displayed on the total weight indicator (the weight of the axle 2a) ) Is visually checked to see if it is stable, and when it is in a stable state, the axle weight is manually measured by operating a shaft weight measuring key provided in the input unit 15. At this time, if the stability determination logic program also determines that the measurement is stable, the static measurement value is determined. Therefore, the static measurement value, the value of the weight register, and the following arithmetic expression: Static measurement From the value-total axle weight (in this case 0) = axle weight, the axle weight (in this case the axle weight of the single axle 2a) is calculated.

Also, set the axle counter to Cm = Cm (= 0) +1
And the static measurement value is stored in the weight register, and the axle weight is supplied to the axle weight indicator and the printing unit 17 corresponding to the value of Cm.

  Hereinafter, the axle weight measurement in the static measurement mode can be performed in the same manner for the two shafts 2b and the three shafts 2c.

  A total weight of the vehicle 2, display devices for the axles 2 a, 2 b, 2 c, an alarm display device for overweight of the axle, and a processing device for host data (counter Cm, weight register, etc.) are provided outside the weight measuring device 1. In some cases, the total weight of the vehicle 2 and the axle weight data of the axles 2a, 2b, and 2c may be supplied to these external devices and displayed.

  Next, a third embodiment of the present invention will be described with reference to the flow shown in FIG.

  In the present embodiment, after the weight measurement of each axle 2a, 2b, 2c is performed in the dynamic measurement mode, when the vehicle 2 gets off the weighing platform 5, the axles 2a, 2b, 2c are provided as necessary. The second weight measurement is performed in the static measurement mode.

  When an allowable limit value is set in order to issue an axle weight overage alarm, the allowable limit value must be set to a value smaller than the legal allowable value in consideration of measurement error. Can be obtained with higher accuracy than the dynamic measurement value, the allowable limit value Wes of the static measurement value is set to a value closer to the legal allowable value than the allowable limit value Wed of the dynamic measurement value.

  In the process where the vehicle 2 gets on the weighing platform 5, when an alarm is issued for the dynamic measurement value of the axle weight, each axle 2 a to 2 c is lowered in order from the weighing platform 5. Obtain the static measurement value of the weight and check again whether the tolerance limit is exceeded with high accuracy.

[Step B101, B102]
The operator first visually confirms that the axle 2a is descending from the weighing platform 5, and then presses the axle weight measurement key.

[Step B103]
Increase the axle counter by +1. In addition, the counter Cn indicating the number of axles placed on the weighing table is counted down by -1.

[Step B104]
If the static measurement value is determined to be stable by the stability determination by the stability ethics program of the static measurement value, the static measurement value of the total weight of the axle on the weighing platform 5 is determined as the measurement value (manually measured) )

[Step B105]
In the previous step A124, the measurement value (total axle weight) of the total weight of the vehicle 2 stored in the memory 14 is called up,
Axle total weight-Measured value of total axle weight on weighing platform 5
= Calculate the measured value of the axle weight of the axle that got off the weighing platform 5 this time, and obtain the measured value of the axle weight of the axle that got off the weighing platform 5 this time. Initially, as described above, the memory 14 stores a static measurement value of the total weight of all the axles (static measurement value of the total weight of the vehicle 2). In order to subtract the measurement value (static measurement value) of the total weight of the axles other than the axle that has descended, the measurement value (static measurement value) of the axle that has descended from the weighing platform 5 is obtained.

[Step B106]
The measured value of the axle weight that got off the weighing platform 5 obtained in the previous step B103 is supplied to the axle weight indicator corresponding to the value of the axle counter Cm and displayed. Thereby, the operator can confirm the accurate axle weight by looking at the display weight value of the axle weight. After that, the calculation in the previous step B103 is continued, and the static measurement value of the obtained axle weight is continuously supplied to the axle weight indicator so that the change in the axle weight can be observed. ing.

[Step B107]
The weighing value of the axle weight is compared with the allowable limit value Wes for static measurement. If the weighing value is larger than Wes, it is determined that the axle weight is over and an alarm is issued to notify the operator and the driver. When an alarm is generated, the operator instructs the driver to reduce the axle weight by removing or moving a part of the load from the vehicle 2. The driver reduces the weight of the load while looking at the axle weight indicator.

[Step B108]
In order to use it for the calculation of the subsequent axle weight, the measured value of the total axle weight obtained in the previous step B103 is stored in the memory 14.

[Step B109, B110]
Check the value of counter Cn. If Cn ≠ 0, it indicates that the axles still remain on the weighing platform 5, so the process returns to the previous step B 101 and the same processing is repeated for each axle on the weighing platform 5. If Cn = 0, it indicates that no axle remains on the weighing platform 5, so the axle counter Cm is cleared to prepare for the axle input of the next vehicle.

  Thereby, the axle measurement for one vehicle is completed.

  As described above, in the present embodiment, the axle weight of each axle 2a, 2b, 2c is automatically measured in the dynamic measurement mode when the vehicle 2 gets on the weighing platform 5, and any axle 2a, Only when the axle weight of 2b and 2c exceeds the allowable limit value Wed, that is, when an alarm is issued, the axle weight of each axle 2a, 2b and 2c is reduced when the vehicle 2 gets off the weighing platform 5. Is measured accurately in the automatic measurement mode. Therefore, the time required for the measurement can be greatly saved for all the vehicles as compared with the case where all the axles are performed in the static measurement mode. In addition, if it is doubtful that the axle weight is within the allowable range defined in road management, the second axle weight measurement is accurately performed in the static measurement mode, so the axle weight regulations are satisfied. It is possible to reliably prevent oversight of no vehicles.

  In each of the above embodiments, the axles 2a, 2b, and 2c are weighed based on the fluctuation of the sampling weight value generated by the weight signal measuring unit 4 (that is, based on the determination whether the equation (i) is satisfied). Although it is determined whether or not the vehicle has entered the platform 5, instead of determining whether each axle 2a, 2b, or 2c is entered by the sensor PS using an optical sensor, an ultrasonic wave, etc. The same effect as the embodiment can be obtained.

  Hereinafter, an example in which axle weight measurement is performed by a weight measuring device equipped with an axle detector will be described.

  FIG. 7 shows a schematic explanatory diagram (a) of a weight measurement device equipped with a detector and a diagram (b) for explaining switching between the static measurement mode and the dynamic measurement mode. .

  As shown in FIG. 7 (a), the weight measuring apparatus 1 is provided with an axle detector (not shown) for determining whether or not the axle has entered the weighing platform 5. The axle detector has an optical sensor (not shown). This optical sensor is arranged on the side of the rear end of the weighing platform 5 (the end closer to the unmeasured vehicle 2), and above the rear end of the weighing platform 5, FIG. The optical axis 20 is generated in a direction perpendicular to the paper surface. When the optical axis 20 is shielded from light by the axles 2a, 2b, 2c or the wheels 2a ′, 2b ′, 2c ′, etc., the axle detector outputs a detection signal with a constant output from the axle detector. It transmits to the weight signal measurement part 4, and when the optical axis 20 is not shielded, it is comprised so that transmission of a signal may be stopped.

  When there is no vehicle on the weighing platform 5 of the vehicle 2, the vehicle is operating in the static measurement mode, and the optical axis 20 is not shielded, so there is no output from the axle detector (time t = ta).

  When the vehicle 2 moves forward and the optical axis 20 is shielded by the single axis 2a and a detection signal is transmitted from the axle detector, the detection signal is transmitted onto the weighing platform 5 of the single axis 2a at the transmission time t = ta. Is determined to have started, and the static measurement mode is switched to the dynamic measurement mode. When the one axis 2a passes through the optical axis 20, the shielding of the optical axis 20 is released, and the output of the detection signal from the axle detector is stopped, the one axis 2a is turned on the weighing platform at the output signal stop time t = tb. 5, the timer count of the timer T0 is started on the assumption that it has completely boarded, and the timer T1 is started after the timer T0 expires (time t = tc).

  Further, if the time up of the timer T1 is established before the subsequent axle (2 axle 2b) gets on the weighing platform 5 (establishment time t = td), a dynamic measurement value is generated as in the first embodiment. The dynamic measurement mode is switched to the static measurement mode. Then, when the subsequent axle (two-axis 2b) is detected (time t = te), the measurement mode is switched back to the dynamic measurement mode, and the weight of the two-axis 2b is obtained.

  On the other hand, before the timer T1 expires (indicated by time t = tf in FIG. 7 (b)), when the subsequent axle gets on the weighing platform 5 (indicated by a two-dot chain line in FIG. 7 (b)). In the case where a detection signal is generated), a dynamic measurement value is obtained by using a sampling weight value obtained within a time Tx from when the timer T1 is started until a subsequent wheel enters the weighing platform 5. Generate. In this case, although not shown in FIG. 7B, the dynamic measurement mode is continued without switching to the static measurement mode. When the subsequent axle (two shafts 2b) gets on the weighing platform 5, the weight of the two shafts 2b is obtained by the dynamic measurement mode. Thereafter, the weight of the triaxial 2c is measured in the same manner.

  In this way, even when the axle detector is used, the entering of each axle 2a, 2b, 2c onto the weighing platform 5 is detected in the same manner as in the case of performing the calculation represented by the equation (i). It is possible to obtain the same effects as those of the above embodiments.

  The axle detector having the calculation represented by the formula (i) and the optical sensor corresponds to the axle boarding determination means of the present invention. Further, the allowable limit value Wed for dynamic measurement values corresponds to the first boundary value of the present invention, and the allowable limit value Wes for static measurement values corresponds to the second boundary value of the present invention.

The top view (a) and side view (b) of the weight measuring device which concern on one Embodiment of this invention Circuit configuration diagram of weight measuring apparatus of this embodiment The figure which shows the waveform which the sampling weight value produced | generated in the weight signal measurement part 4 at the time of vehicle measurement draws Part of a flowchart showing a measurement procedure by the weight measuring apparatus of the present embodiment The remaining part of the flowchart showing the measurement procedure by the weight measuring apparatus of this embodiment The flowchart which shows the measurement procedure of 3rd Embodiment. Schematic explanatory diagram (a) of a weight measurement device equipped with a detector and a diagram (b) for explaining the measurement procedure

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Weight measuring apparatus 2 Vehicle 2a 1 axis 2b 2 axis 2c 3 axis 3 Weighing part 4 Weight signal measuring part 5 Weighing bases 6a-6d Load cell 13 Processing unit 14 Memory 15 Input part 16 Display part

Claims (4)

In a weight measuring device including a weighing platform on which an entire vehicle having a plurality of axles can be loaded, and a load detector disposed below the weighing platform,
A weight display means for displaying the weight measurement value of the axle on the weighing platform, an automatic measurement means for automatically determining the weight measurement value as a measurement value, and the weight measurement value displayed on the weight display means are stable There are two types of measurement means including manual measurement means for manually determining the weight measurement value displayed on the weight display means as a measurement value when in the state, and the axle weight or the entire vehicle according to each measurement means The weight of the vehicle can be determined as a measured value, and during the weight measurement of one vehicle , the one axle from when one axle gets on the weighing platform until the next axle gets on the weighing platform. measuring the time spent on the weighbridge of the axle, when the staying time is longer than the timer time set in advance, until timeout of the timer time is performed it is the automatic measuring device, the timer Weighing device after timeout is characterized in that the manual measuring device is carried out between.   A dynamic measurement mode that automatically detects the measurable time domain of the weight signal and generates a weight measurement value in that time domain, and a static measurement mode that continuously measures the weight signal and generates a weight measurement value continuously. When the process by the automatic measurement unit is performed, the weight measurement value generated by the dynamic measurement mode is determined as the measurement value, and the process by the manual measurement unit is performed. 2. The weight measuring device according to claim 1, wherein the weighing value is determined from the weight measuring values generated in the static measurement mode and displayed on the weight display unit.   The weight display means includes first display means for displaying the total weight or net weight of the vehicle, and second display means for displaying the axle weight. At least the first display means includes the static display The weight measurement device according to claim 2, wherein a weight measurement value generated in the measurement mode is output, and a weight measurement value generated in the dynamic measurement mode is output at least on the second display unit.   A first allowable limit value that is a determination criterion for the axle weight measurement value in the dynamic measurement mode and a second allowable limit value that is a determination criterion for the axle weight measurement value in the static measurement mode are set, and the dynamic The axle weight measurement in the static measurement mode is performed only when the result of the axle weight measurement in the static measurement mode exceeds the first allowable limit value, and the result of the axle weight measurement in the static measurement mode is The weight measuring device according to claim 2, wherein it is determined that the axle weight is over if the second allowable limit value is exceeded.

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