JPH11334852A - Belt conveyor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a belt conveyor device which can detect a meander easily and offer an enhanced easiness for maintenance works. SOLUTION: Transponders 10 are embedded at a constant spacing in the running direction of a conveyor belt 4', and question signals are transmitted at certain time intervals from a scanner unit 30 of a management processing part 20, and the transponder 10 which has received the question signal transmits a response signal including its inherent ID code, and the scanner unit 30 extracts the ID code from the received response signal and transmits the transmit timing signal for question signal and the ID code to a central processing unit 40. From these signals etc., the central processing unit 40 detects the running speed of the belt 4', cumulated running time, cumulated number of revolutions, and generation of meander, the results being displayed on an operation and display unit 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt conveyor.

[0002]

2. Description of the Related Art Conventionally, a large-sized conveyor belt has been used to transport a conveyed object such as ore. When ores and the like are transported by such a conveyor belt, there are many cases where the ore projections or the like cause scratches or vertical cracks due to ore protrusions when the ore is dropped into the conveyor belt or during transportation.

[0003] When the conveyor belt is longitudinally cracked in this way, not only does it hinder the conveyance operation, but also suffers a great deal of damage.

For this reason, the conveyor belt is provided with a vertical crack detecting device for detecting a vertical crack. Various types, such as an exterior type and an interior type, are known as such a vertical crack detection of the conveyor belt.

FIG. 2 is a configuration diagram showing an example of a belt conveyor device provided with the above-described interior type vertical crack detection device. In the figure, reference numeral 1 denotes a belt conveyor device,
The driving pulley 2 includes a driven pulley 2, a conveyor belt 4 stretched over the driven pulley 3, and an electric motor 5 for rotating the driving pulley 2.

As shown in FIG. 3, a plurality of objects to be detected are embedded in the conveyor belt 4 at predetermined regular intervals in the longitudinal direction. The detected object is, for example, a coil 6
A part of the conductive wire forming the coil 6a extends in the width direction of the conveyor belt 4 and is buried in the conveyor belt 4. The resonance frequency of the resonance circuit 6 is about 650 KH
z. Further, the drive pulley 2 is provided with an encoder 7, and the encoder 7 outputs a pulse signal at every predetermined number of rotations. The output timing of the pulse signal is set in synchronization with the movement of the resonance circuit 6 embedded in the conveyor belt 4.

On the other hand, below the conveyor belt 4, three detectors 8a to 8c are fixedly disposed, and these detectors 8a to 8c are connected to the conveyor belt 4 as shown in FIG.
Are displaced little by little in the width direction.

[0010] As shown in FIG. 5, these detecting sections 8 a to 8 c respectively include an antenna coil 81 and an oscillation circuit 8.
2. A determination circuit 83 is provided, and an AC signal having a frequency of about 650 KHz is supplied from the oscillation circuit 82 to the antenna coil 81. Further, the determination circuit 83 is configured to output the AC signal A supplied from the oscillation circuit 82 to the antenna coil 81.
And a timing pulse signal TP output from the encoder 7, the presence or absence of an abnormality in the resonance circuit 6 is determined based on these signals, and an abnormality signal D is output when an abnormality occurs.

According to the conveyor belt longitudinal crack detecting device having the above-described structure, when the conveyor belt 4 has no longitudinal crack, each resonance circuit 6 operates normally and the detecting section 8a
When the resonance circuit 6 is located above the antenna circuit 81 through 8c, the antenna coil 81 and the resonance circuit 6 are electromagnetically coupled. As a result, the energy radiated from the antenna coil 81 is absorbed by the resonance circuit 6, and the level of the AC signal supplied to the antenna coil 81 is reduced, so that the normality of the resonance circuit 6 is confirmed.

When a vertical crack occurs in the conveyor belt 4 in use due to a projection of a falling object or the like, the conductive wire constituting the coil 6a of the resonance circuit 6 embedded in the conveyor belt 4 is cut off. Since the resonance circuit 6 does not operate,
The energy radiated from the antenna coil 81 is not absorbed by the resonance circuit 6. Therefore, since the level of the AC signal supplied to the antenna coil 81 does not decrease, an abnormality of the resonance circuit 6 is detected. Thereby, the vertical crack of the conveyor belt is detected. When the vertical crack of the conveyor belt 4 is detected in this way, the determination circuit 83
Is output, and the electric motor 5 is stopped.

Further, although the conveyor belt 4 may be shifted in the width direction during the conveyance, the state of the resonance circuit 6 can be reliably detected because the plurality of detectors 8a to 8c are arranged as described above. be able to.

[0012]

However, when conveying ore or the like by means of a conveyor belt, the conveyor belt often swings in a direction perpendicular to the running direction, that is, a so-called meandering occurs.

If meandering occurs during transportation, the load may be thrown out of the belt and pose a danger to the surroundings, or the device may be destroyed if the shaking resonates. For this reason, when a meandering occurred, it was necessary to immediately detect the meandering and stop the meandering by lowering the traveling speed or the like. It was very difficult.

Further, as the cumulative running time or the cumulative running distance increases, the deterioration of the belt progresses, and the more the belt deteriorates, the more likely the longitudinal tearing occurs. Therefore, the operator of the device
The accumulated running time or the accumulated running distance had to be measured and managed, which was extremely troublesome and liable to cause errors in the management data.

An object of the present invention is to provide a belt conveyor device capable of easily detecting meandering and improving maintainability in view of the above problems.

[0016]

In order to achieve the above object, according to the present invention, a plurality of transponders for transmitting a response signal including identification information unique to an external inquiry signal of a predetermined frequency are provided. A transmitting means for transmitting the interrogation signal with a predetermined high-frequency power to the transponder, the transmitting means having an antenna disposed at a predetermined position near the belt, Receiving means for receiving a response signal from a transponder to a signal, identification information storing means for storing identification information of all the transponders embedded in the belt and the order of embedding, and one response signal by the receiving means Time measuring means for measuring the time from when a response signal is received until the next response signal is received, and identification information and time included in the response signal Running speed calculating means for calculating the running speed of the belt based on the time measured by the measuring means and the information stored in the identification information storing means; and calculating the accumulated running time of the belt by accumulating the time measured by the time measuring means. Cumulative transit time calculating means, and the identification information included in the response signal received by the receiving means and the identification information stored in the identification information storage means are sequentially compared, and the transponder that has failed to receive the response signal The present invention proposes a belt conveyor device including a meandering detection unit that detects that the belt is meandering when present, and a display unit that displays the running speed, the accumulated running time, and the meandering state.

According to the belt conveyor device, the identification information of all the transponders embedded in the belt and the order of embedding are stored in the identification information storage means when the apparatus is first operated or manufactured. Thereafter, in an actual operation, when an interrogation signal is transmitted from the transmitting means, the interrogation signal is received by one transponder which exists near the antenna or passes near the antenna, and a response is received from the transponder. A signal is emitted. The response signal is received by the receiving means. Further, when one response signal is received by the receiving means, the time until the next response signal is received is measured by the time measuring means, and based on the measured time, the belt speed is calculated by the traveling speed calculating means. Is calculated.

Further, the accumulated traveling time of the belt is calculated by accumulating the time measured by the time measuring means by the accumulated traveling time calculating means, and the identification information included in the response signal received by the receiving means by the meandering detecting means. And the identification information stored in the identification information storage means are sequentially compared, and when there is a transponder that has failed to receive a response signal, it is detected that the belt is meandering.

Further, each of the running speed and the cumulative running time based on the calculation result of the running speed calculating means and the cumulative running time calculating means, and the meandering state based on the detection result of the meandering detecting means are displayed by the display means. Is done.

According to a second aspect of the present invention, there is provided the belt conveyor device according to the first aspect, further comprising a cumulative rotation number calculating means for calculating a cumulative rotation number of the belt based on the traveling speed and the cumulative traveling time. The display means proposes a belt conveyor device for displaying the accumulated number of revolutions.

According to the belt conveyor device, the cumulative rotational speed of the belt is calculated by the cumulative rotational speed calculating means based on the traveling speed and the cumulative traveling time, and the cumulative rotational speed is displayed by the display means. .

According to a third aspect of the present invention, there is provided the belt conveyor device according to the first aspect, further comprising a cumulative traveling distance calculating means for calculating a cumulative traveling distance of the belt based on the traveling speed and the cumulative traveling time. The display means proposes a belt conveyor device for displaying the accumulated traveling distance.

According to the belt conveyor device, the accumulated traveling distance of the belt is calculated by the accumulated traveling distance calculating means based on the traveling speed and the accumulated traveling time, and the accumulated traveling distance is displayed by the display means. .

According to claim 4, claim 1, claim 2, or claim 3
In the belt conveyor device described above, there is proposed a belt conveyor device provided with information transmitting means for transmitting each information displayed by the display means together with device identification information unique to the belt conveyor device to a host device.

According to the belt conveyor device, the information displayed by the display unit together with the device identification information unique to the belt conveyor device is transmitted to the host device by the information transmitting unit. As a result, information such as the use status of a single or a plurality of belt conveyor devices can be centrally managed by a higher-level device grounded at a remote location.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a configuration diagram showing a belt conveyor device according to an embodiment of the present invention. In the figure, the same components as those of the above-described conventional example are denoted by the same reference numerals, and description thereof will be omitted. The difference between the conventional example and the present embodiment is that a plurality of transponders 10 are buried in the conveyor belt 4 ', and the traveling speed, the accumulated traveling time, and the meandering of the conveyor belt 4' are detected and reported. That is, the management processing unit 20 is provided.

That is, in addition to the resonance circuit 6 at one end in the width direction of the conveyor belt 4 ′, as shown in FIGS.
A plurality of transponders 10 are buried in the upper layer at equal intervals L in the length direction. In addition, the management processing unit 20
It comprises a transponder scanner unit 30, a central processing unit 40, and an operation / display unit 50.

The transponder 10 has, for example, an external dimension 10
It is composed of a printed circuit molded with ceramics of mm × 10mm × 2mm. This transponder 1
FIG. 8 shows a block diagram of the electric circuit of No. 0. In the figure, reference numeral 10 denotes a transponder, a transmitting / receiving antenna 11,
It comprises a rectifier circuit 12, a central processing unit 13, an information storage unit 14, a transmitting unit 15, and a duplexer 16.

The rectifier circuit 12 includes diodes 121 and 122, a capacitor 123, and a resistor 124, and forms a well-known full-wave rectifier circuit. A transmission / reception antenna 11 is connected to the input side of the rectifier circuit 12 via a duplexer 16. The high-frequency current induced in the transmission / reception antenna 11 is rectified and converted into a DC current. It is output as a driving power source for the transmission unit 14 and the transmission unit 15.

The central processing unit 13 includes a well-known CPU 131 and a digital / analog (hereinafter, referred to as D / A) converter.
The CPU 131 reads the ID code stored in the information storage unit 14, that is, the identification information unique to each transponder when the power is supplied and driven, and
This is converted into digital data and output to the transmitting unit 15 via the D / A converter 132.

The transmitting section 15 includes an oscillation circuit 151 and a modulation circuit 152.
And a high-frequency amplifier circuit 153. A carrier wave of, for example, 300 MHz oscillated by the oscillation circuit 151 is modulated by the modulation circuit
This is supplied to the transmitting / receiving antenna 11 via the high-frequency amplifier circuit 153 and the duplexer 16.

The duplexer 16 includes a low-pass filter 16a and a high-pass filter 16b. The low-pass filter 16a is connected between the transmitting / receiving antenna 11 and the rectifying circuit 12, and the duplexer 16 is connected between the transmitting / receiving antenna 11 and the high-frequency amplifier 153. The high-pass filter 16b is connected. The low-pass filter 16a passes a high-frequency signal of 1 MHz or less, and the high-pass filter 16b has a frequency of 50 MHz.
This is a filter that passes a high frequency signal of z or more.

FIG. 9 is a block diagram showing an electric circuit of a transponder scanner unit (hereinafter, simply referred to as a scanner unit) 30. In the figure, a scanner unit 30 includes a transmitting / receiving antenna 31, a duplexer 32, a receiving unit 33, a transmitting unit 34, a central processing unit 35, and an interface unit 36 for transferring data between the central processing unit 40. , Scanner unit 3
Only 0 is located below the conveyor belt 4 '.

Here, the scanner unit 30 in the present embodiment radiates an electromagnetic wave of 100 KHz to 300 KHz to the transponder 10 as will be described later, and radiates from the transponder 10 accordingly.
It is a device that receives an ID code transmitted from the transponder 10 by receiving an electromagnetic wave of 00 MHz.

The transmitting / receiving antenna 31 is a wire antenna having a loop coil shape. As shown in FIG. 10, the transponder 10 embedded in the conveyor belt 4 'passes through the center of the antenna so that the transponder 10 passes over the center of the antenna. It is arranged at a predetermined distance from the lower surface. Further, the transmitting / receiving antenna 31 corresponding to the width direction of the conveyor belt 4 'is used.
Is set to a length within the allowable range of the roll of the conveyor belt 4 ', that is, the meandering.

The duplexer 32 includes a high-pass filter 32a and a low-pass filter 32b. The high-pass filter 32a is composed of a transmitting / receiving antenna 31 and a receiving unit 33.
And the low-pass filter 32b is connected between the transmitting / receiving antenna 31 and the transmitting unit 34, respectively. Here, the high-pass filter 32a allows a high-frequency signal of 50 MHz or more to pass, and the low-pass filter 32b
This is a filter that passes a high-frequency signal of MHz or less.

The receiving section 33 includes a receiver 331 and an analog / digital (hereinafter, referred to as A / D) converter 332. The input side of the receiver 331 is connected to the high-pass filter 32a to receive a high frequency of 300 MHz. After detecting this, the signal is output to the central processing unit 35 via the A / D converter 332.

The transmitting section 34 comprises a transmitting circuit 341.
The transmitting circuit 341 outputs a high-frequency signal of, for example, 100 KHz to 300 KHz to the transmitting / receiving antenna 31 based on the control signal from the central processing unit 35.

The central processing unit 35 is composed of a well-known CPU 351 and a memory 352. The CPU 351 is, for example, 5 ms (5/1000) based on a preset program.
The transmission timing signal SD is output to the transmission unit 34 every second), and the transmission unit 34 transmits the electromagnetic wave of the interrogation signal to the transponder 10. Further, the central processing unit 35 converts the transponder 10
And sends the ID code to the central processing unit 40 via the interface unit 36 according to a predetermined protocol, and sends the transmission timing signal SD of the inquiry signal to the central processing unit 40.

On the other hand, as shown in FIG. 11, the central processing unit 40 includes an interface unit 41 between the scanner unit 30 and an interface unit 42 between the operation / display unit 50 and a well-known arithmetic unit such as a CPU. The arithmetic unit 43 includes a storage process 43a, a traveling speed calculation process 4
3b, running time calculation processing 43c, and meandering detection processing 43
It has four functional blocks d.

The storage process 43a is a process performed when the belt conveyor device is driven for the first time. The storage process 43a is performed for all the transponders 10 embedded in the conveyor belt 4 '.
This is a process of sequentially reading the D codes and storing them in the nonvolatile memory in the order of reading. This storage processing 43a can be executed by turning on the power of the management processing unit 20 while pressing a storage processing execution switch (not shown) at the start of driving of the belt conveyor device or during driving.

The specific processing contents of the storage processing 43a are shown in FIG.
As shown in the flowchart of the process 2, when the process is started, all the ID code memories are cleared, and all data in the ID code memory are set to "0" (SA1). Next, the memory address n of the ID code memory is set to “1” (SA2), and it is determined whether an ID code is input from the scanner unit 30 (SA3).

As a result of this determination, when an ID code is input, it is determined whether the received ID code (IDin) is equal to the ID code (ID-1) stored in the first memory address (SA4). ), If they are equal, the processing ends assuming that the ID codes of all the transponders 10 have been stored.

The received ID code (IDin) and 1
ID code (ID
-1) are not equal, the received ID code (IDi
After (n) is stored in the n-th address (SA5), “1” is added to the memory address n (SA6), and the process proceeds to SA3.

By the storage processing 43a, the I of all the transponders 10 embedded in the conveyor belt 4 '
The D code is stored in the ID code memory.

The specific processing content of the traveling speed calculation processing 43b is, as shown in the processing flowchart of FIG.
Is set to “0” (SB1), the scanner unit 3
It is determined whether an ID code has been received from 0 (SB
2). As a result of this determination, when the ID code is received, time measurement by the timer is started (SB3), and “1” is added to the variable k (SB4).

Next, it is determined whether or not an ID code is received from the scanner unit 30 (SB5). When the ID code is received, "1" is added to a variable k (SB6).
It is determined whether or not the variable k is “9”.

If the result of this determination is that the variable k has not reached "9", the flow shifts to the process of SB5, and if the variable k is "9", the time measurement is stopped at the same time that the next ID code is received. (SB7, SB8). Next, "1" is added to the variable k (SB9), and the running speed v of the conveyor belt 4 'is calculated by the following equation (1) using the clocking time t and the embedding interval L of the transponder 10 stored in advance. (SB1
0), operating / display unit 5
0 (SB11).

V = L × k / t (1) The running speed of the conveyor belt 4 ′ is automatically calculated by the running speed calculation processing 43 b and displayed on the operation / display unit 50.

As shown in the processing flowchart of FIG. 14, the specific processing content of the running time calculation processing 43c is to judge whether or not an ID code has been received from the scanner unit 30 (SC1). The timer of the accumulated running time Tcu is started (SC2) and the timer is started (SC3).

Next, the next I
It is determined whether or not the D code has been received (SC4). If the ID code has not been received, the timer count time Ttm is determined.
Is determined to have reached a predetermined comparison reference time Tbs (SC5).

The comparison reference time Tbs is a time for detecting time over, that is, a time for detecting that the traveling of the conveyor belt 4 'has stopped. For example, the conveyor belt 4' runs at the minimum traveling speed. The time is set slightly longer than the transponder 10 detection interval time.

As a result of the determination in SC5, the timer time Ttm is set to a predetermined comparison reference time Tc set in advance.
If it has not reached, the process proceeds to SC4, and if it has reached, the counting of the accumulated running time Tcu is stopped (SC4).
6) After resetting the timer (SC7), the accumulated running time Tcu is stored in the non-volatile memory, and this data is output to the operation / display unit 50 (SC8). Then, the process proceeds to SC1.

When the ID code is received as a result of the determination in SC4, the timer is reset (SC8) and the timer is started (SC9), and the accumulated running time T
cu is stored in the non-volatile memory, and this data is output to the operation / display unit 50 (SC10).

Thereafter, the received ID code IDin is
It is determined whether the ID code is equal to the ID code ID-1 stored in the first address of the code memory (SC11), and if not, the process proceeds to SC4. If they are equal, "1" is added to the cumulative rotational speed Nr (SC1
2) storing the accumulated rotational speed Nr in the non-volatile memory and outputting this data to the operation / display unit 50 (S
C13), and the process proceeds to SC4.

The specific processing contents of the meandering detection processing 43d are as follows.
As shown in the processing flowchart of FIG. 15, it is determined whether or not an ID code has been received from the scanner unit 30 (SD1).
I in which an ID code equal to D code IDin is stored
After detecting the D code memory address n (SD2), "1" is added to the memory address n (SD3).

Thereafter, it is determined whether or not the transmission timing signal SD has been received from the scanner unit 30 (SD).
4) It is determined whether the next ID code is received from the scanner unit 30 when the transmission timing signal SD is received (SD5).

As a result of this determination, when the next ID code is received, it is determined whether the received ID code IDin is equal to the ID code ID-n stored in the n-th address (SD6), If they are equal, the process proceeds to SD4. If they are not equal, it is assumed that the conveyor belt 4 'has meandering, a meandering detection signal is output to the operation / display unit 50 (SD7), and the process shifts to the above-mentioned SD3.

On the other hand, the operation / display unit 50 includes a numeric keypad and other switches, a liquid crystal display or a numeric display, a meandering alarm lamp, a display control unit, an inter-base unit between the push-in processing unit 40, and the like. The traveling speed v, the accumulated traveling time Tcu, and the accumulated rotation speed Nr of the conveyor belt 4 'sent from the central processing unit 40 are displayed, and when a meandering detection signal is received, a meandering alarm lamp is blinked.

According to the belt conveyor device having the above-described configuration, it is necessary to drive the belt conveyor device at the time of installation or shipping of the device to execute the storage processing. By executing this storage process, the conveyor belt 4 ′
The ID codes of all the transponders 10 embedded in are stored in the ID code memory and used for the subsequent management processing.

When the control processing section is started at the same time as the start of the belt conveyor device, an electromagnetic wave of 100 to 300 kHz is transmitted from the scanner unit 30 every 5 ms as an interrogation signal. It is received only by transponders 10 that pass within the upper predetermined range. If the transponder 10 passes out of the range due to the meandering of the conveyor belt 4 ', the interrogation signal is not received by the transponder 10, and as a result, the transponder 10 does not transmit the response signal.

Transponder 1 receiving the above inquiry signal
0 transmits a response signal including its own ID code by an electromagnetic wave of 300 MHz. The response signal is received by the scanner unit 30, and the scanner unit 30 extracts the ID code from the received response signal and sends it to the central processing unit 40.

The central processing unit 40 uses the transmission timing signal SD and the ID code input from the scanner unit 30 to perform the storage processing 43a, the traveling speed calculation processing 43b, the traveling time calculation processing 43c, and the meandering detection processing 4 described above.
Perform 3d.

Therefore, according to the above-mentioned belt conveyor device, the traveling speed v of the conveyor belt 4 'and the accumulated traveling time T
Since the cu and the cumulative number of revolutions Nr are automatically detected and displayed, the use status of the conveyor belt 4 'can be accurately grasped, and the deterioration state of the conveyor belt 4' can be easily determined. Can be improved.
At this time, even when a slip or the like occurs between the driving pulley 2 and the conveyor belt 4 ', and the rotation of the driving pulley 2 and the traveling of the conveyor belt 4' are not synchronized, the traveling speed v and the accumulated traveling time Tcu are accurately calculated. , The accumulated rotation speed Nr can be detected.

Further, when the meandering occurs while the conveyor belt 4 'is running, the occurrence of the meandering is automatically detected, and
Since the meandering warning is displayed, it is possible to quickly cope with the occurrence of the meandering, and to prevent the occurrence of an accident, the destruction of the device, and the like.

The same effect can be obtained by detecting and displaying the cumulative travel distance together with or instead of detecting the cumulative travel time Tcu and the cumulative rotational speed Nr.

Next, a second embodiment of the present invention will be described.

FIG. 16 is a configuration diagram showing a belt conveyor device according to the second embodiment. In the figure, the same components as those in the first embodiment described above are denoted by the same reference numerals, and description thereof will be omitted. Further, the difference between the first embodiment and the second embodiment is that traveling detected by the central processing unit 40 with respect to a higher-level device such as a centralized control device provided at a remote place away from the belt conveyor device. The communication control unit 60 for transmitting information such as the speed v, the cumulative running time Tcu, and the cumulative rotational speed Nr is provided.

The communication control unit 60 inputs data and signals sent from the central processing unit 40 to the operation / display unit 50, and edits information on the traveling speed v, the accumulated traveling time Tcu, the accumulated rotation speed Nr, and the meandering detection. Into a single piece of information, which is then sent to the Internet, a regular telephone line,
The data is transferred to a higher-level device via a communication network such as a communication satellite.

As a result, a plurality of belt conveyor devices can be centrally managed at one place, and the maintainability can be further improved.

Further, it is also possible to input the detection signals of the detection units 8a to 8c and to transfer the occurrence of a vertical tear in the conveyor belt 4 'as information to the host device.

The above-described apparatus configuration and processing flow in the first and second embodiments are merely examples, and the present invention is not limited to these.

[0074]

As described above, according to the first aspect of the present invention, the running speed and the accumulated running time of the belt are automatically detected and displayed, so that the use condition of the belt can be accurately grasped. And maintainability can be improved. Further, when the meandering occurs during the running of the belt, this is automatically detected, and it is displayed that the meandering has occurred. Can be prevented.

According to the second aspect, in addition to the effect of the first aspect, the cumulative rotational speed of the belt is calculated by the cumulative rotational speed calculating means, and the cumulative rotational speed is displayed by the display means. The user can know the usage status of the belt in more detail, which can be used for maintenance.

According to the third aspect, in addition to the effect of the first aspect, the cumulative traveling distance of the belt is calculated by the cumulative traveling distance calculating means based on the traveling speed and the cumulative traveling time. Since the distance is displayed by the display means, the usage status of the belt can be known in more detail, which can be useful for maintenance.

According to the fourth aspect, in addition to the above effects, each information displayed by the display means together with the apparatus identification information unique to the belt conveyor apparatus is transmitted to the host apparatus by the information transmitting means. Information such as the usage status of a single or a plurality of belt conveyor devices can be centrally managed by a higher-level device grounded at a remote location.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating a belt conveyor device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram showing an example of a belt conveyor device provided with a conventional internal vertical crack detection device.

FIG. 3 is a diagram showing an object to be detected embedded in a conveyor belt in a conventional example.

FIG. 4 is a diagram showing an arrangement of detection units in a conventional example.

FIG. 5 is a configuration diagram showing a detection unit in a conventional example.

FIG. 6 is a diagram showing a transponder embedded in a conveyor belt according to the first embodiment of the present invention.

FIG. 7 is a diagram illustrating a transponder embedded in a conveyor belt according to the first embodiment of the present invention.

FIG. 8 is a block diagram showing an electric circuit of the transponder according to the first embodiment of the present invention.

FIG. 9 is a block diagram showing an electric circuit of the transponder scanner unit according to the first embodiment of the present invention.

FIG. 10 is a diagram illustrating an arrangement of a transmitting / receiving antenna of the scanner unit according to the first embodiment of the present invention.

FIG. 11 is a configuration diagram showing a central processing unit according to the first embodiment of the present invention.

FIG. 12 is a process flowchart illustrating a storage process according to the first embodiment of the present invention.

FIG. 13 is a process flowchart illustrating a traveling speed calculation process according to the first embodiment of the present invention.

FIG. 14 is a processing flowchart illustrating a traveling time calculation processing according to the first embodiment of the present invention.

FIG. 15 is a processing flowchart illustrating meandering detection processing according to the first embodiment of the present invention.

FIG. 16 is a configuration diagram illustrating a belt conveyor device according to a second embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Belt conveyor device, 2 ... Drive pulley, 3 ... Follower pulley, 4 '... Conveyor belt, 5 ... Electric motor, 6 ... Hopper, 10 ... Transponder, 11 ... Transmission / reception antenna,
12 rectifier circuit, 13 central processing unit, 14 information storage unit, 15 transmission unit, 16 duplexer, 20 management processing unit, 30 transponder scanner unit, 31
... Transmitting / receiving antenna, 32 ... Duplexer, 33 ... Receiving unit, 34 ... Transmitting unit, 35 ... Central processing unit, 36 ... Interface unit, 40 ... Central processing unit, 41, 42 ... Interface unit, 43 ... Calculating unit, 43a ... Memory processing, 4
3b: traveling speed calculation processing, 43c: traveling time calculation processing,
43d: meandering detection processing, 50: operation / display unit, 6
0: Communication control unit.

Claims (4)

[Claims] 1. A belt in which a plurality of transponders for transmitting a response signal including unique identification information in response to an external inquiry signal of a predetermined frequency are buried at equal intervals in a running direction, and a predetermined position near the belt. Transmitting means for transmitting the interrogation signal with a predetermined high-frequency power to the transponder and having an antenna disposed on the transponder; receiving means for receiving a response signal from the transponder to the interrogation signal; embedded in the belt Identification information storage means for storing the identification information of all the transponders and the order of embedding, and a time for measuring the time from when one response signal is received by the receiving means to when the next response signal is received A measuring unit, based on the identification information included in the response signal, the time measured by the time measuring unit, and information stored in the identification information storage unit. Running speed calculating means for calculating the running speed of the belt, accumulating the time measured by the time measuring means to calculate the cumulative running time of the belt, and a response received by the receiving means. Meandering detection that sequentially compares the identification information included in the signal with the identification information stored in the identification information storage means and detects that the belt is meandering when there is a transponder that has failed to receive a response signal. And a display means for displaying the running speed, the cumulative running time, and the meandering state. 2. The apparatus according to claim 1, further comprising: a cumulative speed calculating means for calculating a cumulative speed of the belt based on the running speed and the cumulative running time, and the display means displays the cumulative speed. The belt conveyor device according to claim 1. 3. The vehicle according to claim 1, further comprising a cumulative travel distance calculating means for calculating a cumulative travel distance of the belt based on the travel speed and the cumulative travel time, and wherein the display means displays the cumulative travel distance. The belt conveyor device according to claim 1. 4. An apparatus according to claim 1, further comprising information transmitting means for transmitting each information displayed by said display means together with apparatus identification information unique to the belt conveyor apparatus to a host apparatus. Belt conveyor device.