JP3089438B2 - Volume measuring device for earth and sand - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring the amount of soil carried.

[0002]

2. Description of the Related Art For example, the transportation of earth and sand for landfilling in the construction of airports and the transport of earth and sand generated in tunnel construction by a shield method are usually carried out by dump trucks and trucks. By the way, in such a construction, managing the soil volume of the conveyed soil is one of the important management items in maintaining efficient deployment of the entire construction. Therefore, conventionally, as a means for managing the amount of soil of the conveyed soil, a method of first measuring the actual vehicle weight of a dump truck or a trolley loaded with earth and sand, and subtracting the empty vehicle weight from the actual vehicle weight to calculate the loaded weight. We have been measuring. That is, it has been managed by the weight measurement method.

[0003]

However, the management of the soil volume of the conveyed soil is not the weight but the volume, as seen in the calculation of the amount of sediment in the landfill. This is because, in weight management, the specific gravity of soil changes depending on the geology and the water content. The present invention provides a weighing device capable of measuring the volume of a transported soil in real time irrespective of the specific gravity of the transported soil from such a viewpoint and following a transport operation, and performing volume management based on the volume. It is intended to be able to perform.

[0004]

As means for achieving the above object, the present invention relates to a measuring gate, a non-contact type height sensor, a vehicle passage detecting device, a vehicle number identifying device, and an arithmetic device. A storage device is connected as follows to constitute a volume measuring device for soil and the like.

[0005] First, a gate for measurement is constructed by setting a gate-shaped gate having a horizontal beam on a road through which a transport vehicle passes. The non-contact type height sensor has a transmitting and receiving unit and a measuring unit,
The transmitting / receiving unit transmits a scanning wave, receives the reflected wave of the scanning wave, and the measuring unit includes an ultrasonic sensor or the like that detects and outputs an arrival time from a transmission time of the scanning wave to a reception time of the reflected wave. did. Then, this is set downward on the horizontal beam of the measurement gate, and when the passing vehicle is empty, the bottom height of the loading platform of the vehicle is detected, and when there is a load, the surface height of the load is detected. It was configured to be.

Next, the vehicle passage detection device is constituted by a so-called photoelectric switch in which a light emitting element and a light receiving element are attached to the left and right supports of the measurement gate. That is, when the vehicle passes through the measurement gate, the photoelectric switch is turned on.
The vehicle is turned off, and the passage of the vehicle is detected by the ON-OFF operation.

[0007] The vehicle number identification device is constituted by a wireless communication device including a transmitter and a receiver. That is, a transmitter for transmitting a signal specifying a vehicle is mounted on the vehicle side, and a receiver is mounted on the measurement gate side.

[0008] Further, the arithmetic unit and the storage unit are connected to the subsequent stage of the non-contact type height sensor, the vehicle passage detecting device, and the vehicle number identifying device. That is, the connection was made in an on-line system. In the storage device, individual vehicle data such as a vehicle number passing through the measurement gate and a bed bottom area are input in advance, and the arithmetic unit detects the vehicle detected by the height sensor when passing through the measurement gate. Based on the detection data of the loading platform bottom height and the loading surface height, the actual height of the cargo is calculated, and the bottom area of the corresponding vehicle stored in advance based on the identification signal from the vehicle number identification device. , And is configured to calculate the amount of piled soil from the heavy height of the load.

Next, when the height sensor is mounted on the horizontal beam of the gate for measurement, a plurality of height sensors are mounted on the horizontal beam at regular intervals, and the height of the bottom surface of the loading platform or the surface of the cargo is densely arranged in the transverse direction. It can be set so that it can be scanned, or it can be installed at the center of a horizontal beam so that it can be turned.It can be set so that it can be rotated and scanned, or it can be moved in the horizontal direction of the horizontal beam and installed so that it can be scanned horizontally. In particular, the configuration is such that the load surface is divided into a mesh shape so that the height can be detected by scanning.

[0010]

[Operation] Since the present invention is configured as described above, first, if the measurement gate is passed in an empty state,
The height of the bed bottom of the vehicle and the vehicle number are input to the storage device. Next, when the transported soil is loaded and passed through the measurement gate, the loading surface height and the vehicle number are also input, so the loading platform bottom height input in the empty state and the loading surface height The actual cargo height is calculated from. At the same time, since the bottom area of the passing vehicle is input in the storage device in advance, when the substantial load height is calculated, the load amount is automatically calculated.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction and operation of the present invention will be specifically described with reference to the embodiments shown in the drawings. First, FIG. 1 is a block diagram showing the configuration of the device of the present invention. As shown in the figure, a computing device 4 and a storage device 5 are provided after the height sensor 1, which detects the height of the bottom surface of the carrier of the transporting vehicle, the height of the cargo surface, the vehicle passage detecting device 2, and the vehicle number identifying device 3. CPU
Connected to a so-called small computer consisting of

An ultrasonic sensor is used as the height sensor 1, and five height sensors 1 are fixed downward to the horizontal beam 7 of the measuring gate 6 at regular intervals as shown in FIG. Installed with. That is, although not shown in the drawing, a transmitting and receiving unit that transmits and receives a scanning sound wave,
Five ultrasonic sensors having a measuring unit for measuring the distance, that is, the height by detecting the arrival time of the reflected wave, are mounted downward so that the transverse cross section of the transport vehicle 20 in the vehicle width direction can be divided and scanned. Configured. In the embodiment, the ultrasonic sensor is used as the height sensor 1 as described above, but a non-contact sensor used in a time pulse type light wave distance meter may be used. For example, it is a so-called light wave type sensor that detects a time required for an infrared pulse to reciprocate between targets and outputs a distance.

FIG. 3 shows an embodiment in which the height sensor 1 is pivotably mounted at the center of the horizontal beam 7 of the measuring gate 6 to rotate a scanning wave so as to perform a so-called rotational scan. Is shown.

FIG. 4 also shows that the height sensor 1 is mounted so as to be able to move left and right along the horizontal beam 7.
1 shows an embodiment in which a plurality of height sensors 1 are configured to perform so-called horizontal scanning. In other words, this indicates that consideration has been given to increasing the measurement accuracy by dividing the cross section of the transport vehicle 20 in the vehicle width direction into several sections and detecting the height.

In the block diagram of FIG. 1, a synchronization control device 8 scans for turning or moving the height sensor 1 mounted on the horizontal beam 7 so as to turn or move based on a signal from the vehicle passage detection device 2. For sending a control signal to the motor 9.

The vehicle passage detecting device 2 comprises a photoelectric switch as described above, and is assembled to the left and right gate columns 10 (10) of the measuring gate 6. FIG. 5 shows a configuration of the vehicle passage detection device 2 in which phototubes 11 and 11 each having a light-emitting element are mounted on the left and right gate columns 10 (10) of the measurement gate 6, and detectors each having a light-receiving element are mounted on the opposite side. FIG. That is, when the transport vehicle 20 passes through the measurement gate 6, the vehicle passage detection device 2 operates,
This is input to the storage device 5 of the CPU as a signal. In FIG. 5, two phototubes 11 as the vehicle passage detection device 2 are assembled when the carrier 20 passes through the measurement gate 6 with an empty vehicle, when the carrier 20 passes in a loaded state, and when the carrier 20 further passes. This is so that the direction can be detected separately. Incidentally, in FIG. 5, when the transport vehicle 20 passes from the left to the right through the measurement gate 6, the left photoelectric tube 11 is activated, then the right photoelectric tube 11 is activated, and conversely, the transport vehicle 20 passes from the right to the left. Are configured to work in reverse order,
The discrimination is performed by the in / out decision circuit shown in FIG.

Next, as described above, the vehicle number identification device 3 is constituted by a wireless communication device including a transmitter and a receiver. FIG. 6 shows the configuration. That is, the transmitter 3a is mounted on the transport vehicle 20 side, the receiver 3b is mounted on the gate post 10 of the measuring gate 6, and the transmitter 3a is configured to transmit a vehicle number for specifying the transport vehicle 20. When the transport vehicle 20 passes through the measurement gate 6, the signal is received. Therefore, since it is a very close position, in the embodiment, the communication device is constituted by a communication device using a weak radio wave of a short-range wireless communication having a response area of 800 m / m. That is, when the transport vehicle 20 approaches and passes the measurement gate 6, the receiver 3b catches the radio wave from the transmitter 3a, and the receiver
b to connect to the CPU. Note that C
As described above, the storage device 5 in the PU has previously input and described the vehicle number specifying the transport vehicle 20 passing therethrough and the bed bottom area of the vehicle. Of course, it is natural that an output display device is connected to this CPU.

Since the measuring device for soil and the like according to the present invention is constructed as described in the above embodiments, the measuring gate is provided at the entrance and exit of the landfill site for landfill and at the entrance and exit of the tunnel construction site. If this gate is equipped with a height sensor, a vehicle passage detection device, and a vehicle number identification device, and the output from these devices is connected to a CPU installed in a construction management room, etc.
Moreover, it can be grasped in real time.

[0019]

【The invention's effect】

(1) Since the transported soil can be captured as a volume, it is optimal for soil volume management. (2) Since the capture is performed by so-called computer processing, the confirmation of the result is grasped in real time and with high accuracy, and the qualitative improvement of soil volume management is achieved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a volume measuring device for soil and the like according to the present invention.

FIG. 2 is a front view in which a plurality of height sensors are attached to a measurement gate in a state where they are fixed at fixed intervals.

FIG. 3 is a front view in which a height sensor is turned and rotated and scanned so as to be attached to a measurement gate.

FIG. 4 is a front view in which a height sensor is horizontally moved and mounted on a measurement gate so that horizontal scanning can be performed.

FIG. 5 is a side view in which the vehicle passage detection device is attached to a measurement gate.

FIG. 6 is a front view showing a state in which a transmitter constituting the vehicle number identification device is mounted on a transport vehicle side, and a receiver is mounted on a measurement gate side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Height sensor 2 Vehicle passage detection device 3 Vehicle number identification device 4 Arithmetic device 5 Storage device 6 Measurement gate 7 Horizontal beam of measurement gate 8 Synchronization control device 9 Scanning motor 10 Gate of measurement gate 11 Photoelectric tube 12 Transport vehicle

Continuation of the front page (72) Inventor Seiji Abe 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Taisei Corporation (56) References JP-A-62-284207 (JP, A) JP-A-1- 145509 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) G01F 17/00

Claims (4)

(57) [Claims] 1. A measuring gate, a non-contact type height sensor, a vehicle passage detecting device, a vehicle number identifying device, an arithmetic device, and a storage device, wherein the measuring gate allows a transport vehicle to pass through. On the road to be formed, comprises a gate-shaped gate having a horizontal beam, the non-contact type height sensor comprises a transmitting and receiving unit and a measuring unit, the transmitting and receiving unit transmits a scanning wave, and receives a reflected wave of the scanning wave The measuring unit detects and outputs the arrival time from the transmission time of the scanning wave to the reception time of the reflected wave, and is attached downward to the horizontal beam of the measurement gate. Detects the height of the bottom of the cargo, and if there is a cargo, sets it to detect the surface height of the cargo. The vehicle passage detection device attaches a light emitting element and a light receiving element to the left and right supports of the measurement gate. Consisting of a photoelectric switch, the car The number identification device is a wireless communication device including a transmitter and a receiver, a transmitter for transmitting a signal specifying a vehicle is mounted on the vehicle side, and a receiver is mounted on the measurement gate side, and the calculation is performed. The device and the storage device are connected to the subsequent stage of the non-contact height sensor, the vehicle passage detection device, and the vehicle number identification device, and the storage device has a vehicle number of each vehicle that passes through the measurement gate in advance. Input individual vehicle data such as the bed bottom area, the arithmetic unit, when passing through the measurement gate,
The bed bottom height of the vehicle detected by the height sensor,
Based on the detection data with the load surface height, the actual height of the load is calculated, and based on the identification signal from the vehicle number identification device, the bottom area of the corresponding vehicle is called from a storage device, and the actual height of the load is read. A volume measuring device for soil and the like, wherein the volume measuring device is configured to calculate a load soil amount from the ground. 2. The volume measuring device for soil and the like according to claim 1, wherein a plurality of the height sensors are attached to the horizontal beam of the measuring gate at a predetermined interval. 3. The volume measuring device according to claim 1, wherein the height sensor is mounted at the center of the horizontal beam of the measuring gate so as to be able to turn and rotate and scan. 4. A volume measuring device for soil and the like according to claim 1, wherein said height sensor is mounted so as to move in a left-right direction along a horizontal beam of a measuring gate and to perform horizontal scanning. .