JP2006052039A - Conveyor belt monitoring system - Google Patents
Conveyor belt monitoring system Download PDFInfo
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- JP2006052039A JP2006052039A JP2004233606A JP2004233606A JP2006052039A JP 2006052039 A JP2006052039 A JP 2006052039A JP 2004233606 A JP2004233606 A JP 2004233606A JP 2004233606 A JP2004233606 A JP 2004233606A JP 2006052039 A JP2006052039 A JP 2006052039A
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- conveyor belt
- identification information
- measuring means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/02—Control or detection
- B65G2203/0266—Control or detection relating to the load carrier(s)
- B65G2203/0275—Damage on the load carrier
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/04—Detection means
- B65G2203/042—Sensors
- B65G2203/045—Thermic
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- Control Of Conveyors (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Belt Conveyors (AREA)
- Radar Systems Or Details Thereof (AREA)
- Optical Radar Systems And Details Thereof (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
本発明は、コンベヤベルトの縦裂きを検出するコンベヤベルトのモニタリングシステムに係り、特に縦裂きの予兆としての異常な高温、異常に大きいベルト張力、磨耗をも検出して、縦裂きを未然に防ぐ機能も併せもつコンベヤベルトのモニタリングシステムに関する。 The present invention relates to a conveyor belt monitoring system that detects the longitudinal tearing of a conveyor belt, and particularly detects abnormally high temperatures, abnormally high belt tension, and wear as signs of longitudinal tearing to prevent longitudinal tearing. The present invention relates to a conveyor belt monitoring system that also has functions.
下記特許文献１に記載されたコンベヤベルトのモニタリングシステムは、コンベヤベルトの全幅をカバーする複数のループコイルを、コンベヤベルトの長さ方向に連続的に埋設または表面に敷設したものである。ループコイルのうち、コンベヤベルトの両側縁部に位置する部分は、コンベヤベルトの進行につれて、所定の箇所で、外部の破断検出回路と電気的に接触するようになっている。破断検出回路は、ループコイルの両側縁部と接触することにより、回路全体に電流が流れ、コンベアベルトの正常を確認する。 In the conveyor belt monitoring system described in Patent Document 1 below, a plurality of loop coils covering the entire width of the conveyor belt are continuously embedded or laid on the surface in the length direction of the conveyor belt. Of the loop coil, portions located on both side edges of the conveyor belt are in electrical contact with an external break detection circuit at a predetermined location as the conveyor belt advances. The rupture detection circuit makes contact with both side edges of the loop coil, so that a current flows through the entire circuit and confirms that the conveyor belt is normal.
一方、コンベヤベルトのいずれかの箇所で縦裂きが生じると、ループコイルが断線するため、ループコイルの両側縁部が破断検出回路と接触しても、回路全体に電流が流れることはない。したがって、コンベヤベルトの異常を検知しうる。 On the other hand, if a longitudinal tear occurs in any part of the conveyor belt, the loop coil is disconnected, so that no current flows through the entire circuit even if both side edges of the loop coil come into contact with the break detection circuit. Therefore, the abnormality of the conveyor belt can be detected.
下記特許文献２に記載されたコンベヤベルトのモニタリングシステムは、コンベヤベルトの表層部または基層部に、長さ方向において互いに間隔を開けつつ、複数のトランスポンダを設けるとともに、コンベヤベルトの外部に、少なくとも１つの送受信装置、およびこれに接続されたデータ処理部を設けたものである。
In the conveyor belt monitoring system described in the following
送受信装置は、励磁コイルから常時ラジオ周波数の電波を発しており、データ搬送コイルが、コンベヤベルトの進行により、この電波の受信領域に入ると、電磁結合により電圧を発生し、トランスポンダに給電する。 The transmission / reception device constantly emits radio frequency radio waves from the excitation coil. When the data carrying coil enters the reception area of this radio wave due to the progress of the conveyor belt, it generates a voltage by electromagnetic coupling and supplies power to the transponder.
トランスポンダは、電磁エネルギーを受けると、固有の識別情報を、データ搬送コイルを介して、送受信装置に送る。したがって、データ処理部は、トランスポンダを識別しつつ、異常がないことを確認する。 When receiving the electromagnetic energy, the transponder sends unique identification information to the transmitting / receiving device via the data carrying coil. Therefore, the data processing unit confirms that there is no abnormality while identifying the transponder.
一方、コンベヤベルトに亀裂や縦裂きが生ずると、その箇所にあるトランスポンダが破損または落下するため、送受信装置は、そのトランスポンダから識別情報を受信できなくなり、データ処理部は、そのトランスポンダの異常を検知する。
上記の各特許は、亀裂または縦裂きが生じて、ループの破損や、トランスポンダの破損または落下が生じるまで、コンベヤベルトの異常を検知できない。しかし、この段階で異常を検知しても、修復にかかる費用や手間が大きくなる。 Each of the above patents cannot detect anomalies in the conveyor belt until a crack or longitudinal tear occurs, causing a loop breakage, a transponder breakage, or a drop. However, even if an abnormality is detected at this stage, the cost and time required for repair increase.
そこで、本発明は、コンベヤベルトの異常をできるだけ早く検知し、修復に要する費用や手間を節減することができるコンベアベルトのモニタリングシステムを提供する。 Therefore, the present invention provides a monitoring system for a conveyor belt that can detect an abnormality of the conveyor belt as soon as possible and reduce costs and labor required for repair.
本発明によると、上記課題は、次のようにして解決される。
(１) コンベアベルトのモニタリングシステムにおいて、コンベヤベルトの表層部または内部に、長さ方向において所定の間隔を開けて連続的に設置されるとともに、自己の識別情報を保持し、かつ外部から非接触的にエネルギーを得て、この識別情報を発信するトランスポンダと、コンベヤベルトの表層部または内部に、長さ方向において所定の間隔を開けて連続的に設置されるとともに、自己の識別情報を保持し、かつ外部から非接触的にエネルギーを得て、コンベヤベルトの温度および圧力の少なくとも一方を計測し、計測値を前記自己の識別情報と併せて電波に載せて発信する計測手段と、コンベアベルトから所定の距離を離間して所定の固定位置に設置され、前記トランスポンダおよび計測手段に対して所定の大きさの電磁エネルギーを発するとともに、これらトランスポンダおよび計測手段から、自己の識別情報および計測値を載せた電波を受信する送受信装置と、前記送受信装置と接続され、この送受信装置から、トランスポンダおよび計測手段より送られた識別情報および計測値の提供を受けて、コンベヤベルトの形状変化ならびに温度および／または圧力の異常を判断するデータ処理装置とを備えるようにする。
According to the present invention, the above problem is solved as follows.
(1) In the conveyor belt monitoring system, it is continuously installed on the surface layer or inside of the conveyor belt at a predetermined interval in the length direction, and holds its own identification information and is not contacted from the outside. It is installed continuously at a predetermined interval in the length direction on the surface layer or inside of the conveyor belt and the transponder that obtains energy and transmits this identification information, and retains its own identification information. And measuring means for obtaining energy from the outside in a non-contact manner, measuring at least one of the temperature and pressure of the conveyor belt, and transmitting the measured value on the radio wave together with the identification information of the self, from the conveyor belt An electromagnetic energy having a predetermined magnitude is installed at a predetermined fixed position with a predetermined distance apart from the transponder and the measuring means. A transmitter / receiver that receives radio waves carrying its own identification information and measurement values from these transponders and measuring means, and is connected to the transmitter / receiver, and the identification sent from the transponder and measuring means from this transmitter / receiver A data processing device is provided which receives information and measurement values and determines a change in the shape of the conveyor belt and abnormalities in temperature and / or pressure.
(２) 上記(１)項において、コンベヤベルトの幅方向におけるトランスポンダの長さを、１００mm以上とする。 (2) In the above item (1), the length of the transponder in the width direction of the conveyor belt is set to 100 mm or more.
(３) 上記(１)または(２)項において、送受信装置の出力を４〜１０Ｗとする。 (3) In the above item (1) or (2), the output of the transmission / reception apparatus is 4 to 10 W.
(４) コンベアベルトのモニタリングシステムにおいて、コンベヤベルトの外部に設置され、コンベアベルトの形状変化を非接触的に検知しうるレーザセンサと、 コンベヤベルトの表層部または内部に、長さ方向において所定の間隔を開けて連続的に設置されるとともに、自己の識別情報を保持し、かつ外部から非接触的にエネルギーを得て、コンベヤベルトの温度および圧力の少なくとも一方を計測し、計測値を前記自己の識別情報と併せて電波に載せて発信する計測手段と、コンベアベルトから所定の距離を離間して所定の固定位置に設置され、前記計測手段に対して所定の大きさの電磁エネルギーを発するとともに、この計測手段から、自己の識別情報および計測値を載せた電波を受信する送受信装置と、前記レーザセンサおよび送受信装置と接続され、これらレーザセンサおよび送受信装置から、それぞれレーザセンサの得たデータ、および計測手段より送られた識別情報および計測値の提供を受けて、コンベヤベルトの形状変化ならびに温度および／または圧力の異常を判断するデータ処理装置とを備えるようにする。 (4) In the conveyor belt monitoring system, a laser sensor that is installed outside the conveyor belt and that can detect a change in the shape of the conveyor belt in a non-contact manner, and on the surface layer or inside of the conveyor belt, a predetermined lengthwise direction is provided. Installed continuously at intervals, retains its own identification information, obtains energy from the outside in a non-contact manner, measures at least one of the temperature and pressure of the conveyor belt, A measuring means for transmitting on radio waves together with the identification information, and a predetermined distance apart from the conveyor belt, which is installed at a predetermined fixed position, and emits a predetermined amount of electromagnetic energy to the measuring means A transmitter / receiver for receiving a radio wave carrying its own identification information and measurement value from the measuring means, the laser sensor and the transmitter / receiver. In response to the data obtained by the laser sensors and the identification information and measurement values sent from the measuring means from these laser sensors and transmission / reception devices, respectively, the shape change of the conveyor belt and the temperature and / or pressure are received. And a data processing device for judging the abnormality.
(５) コンベアベルトのモニタリングシステムにおいて、コンベヤベルトの表層部または内部に、長さ方向において所定の間隔を開けて連続的に設置される永久磁石と、コンベアベルトから所定の距離を離間して所定の固定位置に設置され、前記永久磁石から発せられる磁束の量の変化を検知しうる磁気センサと、コンベヤベルトの表層部または内部に、長さ方向において所定の間隔を開けて連続的に設置されるとともに、自己の識別情報を保持し、かつ外部から非接触的にエネルギーを得て、コンベヤベルトの温度および圧力の少なくとも一方を計測し、計測値を前記自己の識別情報と併せて電波に載せて発信する計測手段と、コンベアベルトから所定の距離を離間して所定の固定位置に設置され、前記計測手段に対して所定の大きさの電磁エネルギーを発するとともに、これら磁気センサおよび計測手段から、自己の識別情報および計測値を載せた電波を受信する送受信装置と、前記磁気センサおよび送受信装置と接続され、これらの磁気センサおよび送受信装置から、それぞれ磁気センサの得たデータ、および計測手段より送られた識別情報および計測値の提供を受けて、コンベヤベルトの形状変化ならびに温度および／または圧力の異常を判断するデータ処理装置とを備えるようにする。 (5) In the conveyor belt monitoring system, a permanent magnet continuously installed at a predetermined interval in the length direction on the surface layer portion or inside of the conveyor belt, and a predetermined distance from the conveyor belt. And a magnetic sensor that can detect a change in the amount of magnetic flux emitted from the permanent magnet, and is continuously installed at a predetermined interval in the length direction on the surface layer or inside of the conveyor belt. At the same time, it retains its own identification information and obtains energy from the outside in a non-contact manner, measures at least one of the temperature and pressure of the conveyor belt, and places the measured value on the radio wave together with the identification information of the self. A measuring means for transmitting the sound and a predetermined distance away from the conveyor belt and installed at a predetermined fixed position. While emitting energy, from these magnetic sensors and measuring means, it is connected to a transmitting / receiving device that receives radio waves carrying its identification information and measurement values, and to the magnetic sensor and transmitting / receiving device, from these magnetic sensors and transmitting / receiving devices, A data processing device for judging the change in the shape of the conveyor belt and the abnormality in temperature and / or pressure in response to the data obtained by the magnetic sensor and the identification information and measurement value sent from the measuring means. To do.
(１) 請求項１記載の発明によれば、トランスポンダと計測手段が、ともに送受信装置から非接触的にエネルギーを受け、電磁誘導により発生した電圧を利用して、それぞれ格納してある自己の識別情報を、送受信装置に対して発信する。また、計測手段は、温度および圧力の少なくとも一方を計測して、その計測値をも送受信装置に対して発信する。
コンベヤベルトに亀裂や縦裂きが生ずる前には、通常、温度や圧力の値が異常に高くなるところ、この発明によれば、この温度や圧力の異常値を、送受信装置を介してデータ処理装置において判別しうるため、爾際に亀裂や縦裂きが生じてトランスポンダが破損または落下した場合だけでなく、その予兆も検知することができる。
また、トランスポンダだけでなく、計測手段も自己識別情報を格納し、これを発信するため、データ処理装置において、温度や圧力の異常な箇所を特定し、迅速な対応措置をとることができる。
この発明においては、コンベヤベルトに多数配設するトランスポンダおよび計測手段が電源を内蔵しないため、総コストを節減することができる。
さらに、コンベヤベルトの異常に関する情報を、非接触的に入手ため、接触式の情報入手方法に比べて、故障が生じるおそれが少ない。
(1) According to the invention described in claim 1, the transponder and the measuring means both receive energy from the transmitting / receiving device in a non-contact manner, and use the voltage generated by electromagnetic induction to identify the stored self. Information is transmitted to the transmission / reception device. The measuring means measures at least one of temperature and pressure and transmits the measured value to the transmitting / receiving device.
Before the conveyor belt is cracked or longitudinally cracked, the value of the temperature or pressure usually becomes abnormally high. According to the present invention, the abnormal value of temperature or pressure is transmitted to the data processing device via the transmission / reception device. Therefore, it is possible to detect not only the case where the transponder is broken or dropped due to a crack or vertical tear at the time of dripping, but also a sign of the occurrence.
Further, since not only the transponder but also the measuring means stores the self-identification information and transmits it, the data processing apparatus can identify an abnormal temperature or pressure location and take a prompt action.
In the present invention, since a large number of transponders and measuring means arranged on the conveyor belt do not have a built-in power supply, the total cost can be reduced.
Furthermore, since the information regarding the abnormality of the conveyor belt is obtained in a non-contact manner, there is less possibility of failure as compared with the contact-type information obtaining method.
(２) 請求項２記載の発明によれば、コンベヤベルトの幅方向におけるトランスポンダの長さが、１００mm以上であるため、送受信装置におけるトランスポンダからの電波の受信範囲が広がり、コンベヤベルトが蛇行した場合でも、受信漏れによって、異常が発生したとの誤った判断をするおそれが小さくなる。
(2) According to the invention of
(３) 請求項３記載の発明によれば、十分な出力によって、コンベアベルトと３０ｃｍくらいまでのシステムの保持上安全な距離を保って、送受信装置とトランスポンダおよび計測手段との間のエネルギーの供給および情報の入手を行うことができる。 (3) According to the third aspect of the present invention, the energy supply between the transmission / reception apparatus, the transponder and the measuring means is maintained by a sufficient output while maintaining a safe distance for holding the conveyor belt and the system up to about 30 cm. And obtain information.
(４) 請求項４記載の発明によれば、計測手段は、送受信装置から非接触的にエネルギーを受け、電磁結合により発生した電圧を利用して、温度および圧力の少なくとも一方を計測し、その計測値、ならびに格納してある自己の識別情報を、送受信装置に対して発信する。
一方、レーザセンサは、亀裂や縦裂きを含むコンベヤベルトの形状変化を非接触的に検知することができる。
よって、この発明においても、コンベヤベルトの形状の異常、およびその予兆を非接触的に知ることができるため、コンベヤベルトの異常の拡大を未然に防ぎ、かつ接触式の情報入手方法の欠点を克服することができる。
(4) According to the invention described in
On the other hand, the laser sensor can detect non-contact changes in the shape of the conveyor belt including cracks and vertical tears.
Therefore, in this invention as well, since the abnormality of the shape of the conveyor belt and its sign can be known in a non-contact manner, the expansion of the abnormality of the conveyor belt can be prevented in advance, and the drawbacks of the contact type information acquisition method can be overcome. can do.
(５) 請求項５記載の発明によれば、計測手段は、送受信装置から非接触的にエネルギーを受け、電磁結合により発生した電圧を利用して、温度および圧力の少なくとも一方を計測し、その計測値、ならびに格納してある自己の識別情報を、送受信装置に対して発信する。
一方、コンベアベルト上の永久磁石が移動すると、磁気センサは、自己に対する磁束の量の変化を測定して、磁石の位置を検出することができる。したがって、亀裂や縦裂きによって、永久磁石が落下すれば、コンベヤベルトの異常を知ることができる。
よって、この発明においても、コンベヤベルトの形状の異常、およびその予兆を非接触的に知ることができるため、コンベヤベルトの異常の拡大を未然に防ぎ、かつ接触式の情報入手方法の欠点を克服することができる。
(5) According to the invention described in
On the other hand, when the permanent magnet on the conveyor belt moves, the magnetic sensor can detect the position of the magnet by measuring the change in the amount of magnetic flux with respect to itself. Therefore, if the permanent magnet falls due to cracks or vertical tears, it is possible to know the abnormality of the conveyor belt.
Therefore, in this invention as well, since the abnormality of the shape of the conveyor belt and its sign can be known in a non-contact manner, the expansion of the abnormality of the conveyor belt can be prevented in advance, and the drawbacks of the contact type information acquisition method can be overcome. can do.
図１は、本発明の第１の実施形態を示す。部分的に表されたコンベヤベルト(１)は側面方向から視たものであり、矢印Ａで示すように、左方から右方へ向かって進行する。コンベヤベルト(１)の下面(1a)には、右から温度センサ(２)、圧力センサ(３)、およびトランスポンダ(４)が１つのグループを形成して、それぞれ埋設されている。温度センサ(２)、圧力センサ(３)、およびトランスポンダ(４)のグループは、一定の間隔を開けて、コンベヤベルト(１)の長さ方向に連続的に配置されている。なお、計測手段としての温度センサ(２)と圧力センサ(３)は、少なくとも一方が設けられていればよい。 FIG. 1 shows a first embodiment of the present invention. The partially represented conveyor belt (1) is viewed from the side, and proceeds from left to right as indicated by arrow A. On the lower surface (1a) of the conveyor belt (1), a temperature sensor (2), a pressure sensor (3), and a transponder (4) are formed from the right to form one group, respectively. The group of the temperature sensor (2), the pressure sensor (3), and the transponder (4) is continuously arranged in the length direction of the conveyor belt (1) at a predetermined interval. It should be noted that at least one of the temperature sensor (2) and the pressure sensor (3) as the measuring means may be provided.
コンベヤベルト(１)の約３０ｃｍ下方には、送受信装置(５)が設置されており、送受信装置(５)にはデータ処理装置(６)が接続されている。また、データ処理装置(６)は、コンベアベルト(１)の稼動と停止を制御する制御機構にも接続されている。送受信装置(５)は、コンベヤベルト(１)に向けて、常時４〜１０Ｗのラジオ周波数の電磁波を発している。この出力は、比較的大きく、このような出力とすることで、遠距離の発信を可能とし、コンベヤベルト(１)との間に、撓みによる破損を回避しうる距離を保つことができる。 A transmitter / receiver (5) is installed about 30 cm below the conveyor belt (1), and a data processor (6) is connected to the transmitter / receiver (5). The data processing device (6) is also connected to a control mechanism for controlling the operation and stop of the conveyor belt (1). The transmission / reception device (5) always emits electromagnetic waves having a radio frequency of 4 to 10 W toward the conveyor belt (1). This output is relatively large, and by using such an output, it is possible to transmit a long distance and maintain a distance from the conveyor belt (1) that can avoid breakage due to bending.
トランスポンダ(４)は、ＩＣメモリ（図示せず）を内蔵し、自己の識別情報を格納している。また、トランスポンダ(４)は、内部アンテナ（図示せず）も備えており、送受信装置(５)から発せられた電磁波を電気エネルギーに変換し、このエネルギーによって、ＩＣメモリに格納されている自己識別情報を読み出し、これを内部アンテナから、送受信装置(５)に向けて発信する。 The transponder (4) incorporates an IC memory (not shown) and stores its own identification information. The transponder (4) also includes an internal antenna (not shown), converts electromagnetic waves emitted from the transmitting / receiving device (5) into electrical energy, and self-identification stored in the IC memory by this energy. Information is read out and transmitted from the internal antenna to the transmitting / receiving device (5).
送受信装置(５)は、トランスポンダ(４)から電波を受信する限り、データ処理装置(６)は、コンベヤベルト(１)が正常に稼動していると判断する。他方、送受信装置(５)が、トランスポンダ(４)から電波を受信できない場合、データ処理装置(６)は、コンベヤベルト(１)に縦裂き等が生じてトランスポンダ(４)が落下する等、何らかの異常が発生したと判断する。 As long as the transmission / reception device (5) receives radio waves from the transponder (4), the data processing device (6) determines that the conveyor belt (1) is operating normally. On the other hand, if the transmitting / receiving device (5) cannot receive radio waves from the transponder (4), the data processing device (6) may cause some kind of damage such as a vertical tear in the conveyor belt (1) and the transponder (4) dropping. Judge that an abnormality has occurred.
コンベヤベルト(１)を稼動させる場合、蛇行が生じて、トランスポンダ(４)が、送受信装置(５)の真上を通過しないことは、通常見られることである。しかし、このような場合に、送受信装置(５)がトランスポンダ(４)からの電波を受信できなくなって、異常が発生したと判断するのは好ましくない。そこで、コンベヤベルト(１)の幅方向におけるトランスポンダ(４)の長さは、１００mm以上とするのが好ましい。こうすれば、送受信装置(５)の受信可能範囲が広がり、トランスポンダ(４)が蛇行によって送受信装置(５)の真上を通過しない場合にも、異常発生という誤った判断をするおそれが小さくなる。 When operating the conveyor belt (1), it is normally seen that meandering occurs and the transponder (4) does not pass directly above the transceiver (5). However, in such a case, it is not preferable that the transmission / reception device (5) cannot receive the radio wave from the transponder (4) and determine that an abnormality has occurred. Therefore, the length of the transponder (4) in the width direction of the conveyor belt (1) is preferably 100 mm or more. In this way, the receivable range of the transmission / reception device (5) is widened, and the possibility of making an erroneous determination that an abnormality has occurred is reduced even when the transponder (4) does not pass right above the transmission / reception device (5) due to meandering. .
温度センサ(２)と圧力センサ(３)も、同様にＩＣメモリと内部アンテナ（ともに図示せず）を備えており、ＩＣメモリには、自己の識別情報が格納されている。温度センサ(２)と圧力センサ(３)は、内部アンテナで電圧が発生すると、このエネルギーを利用して、周囲の温度と圧力を計測するとともに、計測値を自己の識別情報とともに、内部アンテナから、送受信装置(５)に向けて発信する。 Similarly, the temperature sensor (2) and the pressure sensor (3) are also provided with an IC memory and an internal antenna (both not shown), and their own identification information is stored in the IC memory. When a voltage is generated at the internal antenna, the temperature sensor (2) and the pressure sensor (3) use this energy to measure the ambient temperature and pressure, and the measured value from the internal antenna along with its own identification information. , And send to the transmitter / receiver (5).
コンベヤベルトに極端な伸び、亀裂、縦裂きなどが生ずる場合には、通常事前に、その周囲で異常に高い温度や高い圧力が発生する。したがって、送受信装置(５)が、温度センサ(２)や圧力センサ(３)から、そのような異常な計測値を受信したときは、データ処理装置(６)において、定常的な値と比較することによって、異常な事態の発生を判断する。 When extreme elongation, cracks, longitudinal tears, etc. occur on the conveyor belt, an abnormally high temperature or high pressure is usually generated around it. Therefore, when the transmitter / receiver (5) receives such an abnormal measurement value from the temperature sensor (2) or the pressure sensor (3), the data processor (6) compares it with a steady value. To determine the occurrence of an abnormal situation.
データ処理装置(６)は、温度と圧力が一定の閾値を超えた場合には、制御機構へ知らせ、コンベヤベルト(１)の稼動を停止する。この実施形態においては、温度センサ(２)と圧力センサ(３)から識別情報を入手できるため、異常個所を簡単に割出すことができる。 When the temperature and pressure exceed a certain threshold, the data processing device (6) notifies the control mechanism and stops the operation of the conveyor belt (1). In this embodiment, since the identification information can be obtained from the temperature sensor (2) and the pressure sensor (3), the abnormal part can be easily determined.
本実施形態によれば、通常は亀裂や縦裂きが生じる前に、その兆候を知りうるため、コンベヤベルトの部分的な交換等、費用と手間の係る処置を回避することができる。また、万一、亀裂や縦裂きが生じてしまった場合でも、トランスポンダ(４)の破損や落下により、トランスポンダ(４)の識別情報を受信できなくなった段階で、これを知ることができる。このような場合は、データ処理装置(６)と制御機構を介して、直ちにコンベヤベルト(１)の稼動を停止し、亀裂等の修復をすることにより、コンベヤベルト(１)の形状変化の拡大や被搬送物の落下等を最小限に抑えることができる。 According to the present embodiment, since the sign can be known before a crack or a vertical tear usually occurs, it is possible to avoid cost and labor-related measures such as partial replacement of the conveyor belt. In the unlikely event that a crack or vertical tear occurs, this can be known when the transponder (4) cannot receive the identification information due to the damage or drop of the transponder (4). In such a case, the operation of the conveyor belt (1) is immediately stopped through the data processing device (6) and the control mechanism, and cracks are repaired, thereby expanding the shape change of the conveyor belt (1). And the fall of the conveyed object can be minimized.
本発明においては、コンベヤベルト(１)の異常の検知が、コンベヤベルト(１)と外部検知手段との物理的な接触を介せずに行われる。接触式の検知は、検知手段の故障を生じやすいが、本発明においては、そのようなおそれを回避することができる。 In the present invention, the abnormality of the conveyor belt (1) is detected without the physical contact between the conveyor belt (1) and the external detection means. Although contact type detection tends to cause failure of the detection means, in the present invention, such a fear can be avoided.
図２は、本発明の第２の実施形態を示す。図１と同様の要素には同一の符号を付して、説明を省略する。 FIG. 2 shows a second embodiment of the present invention. Elements similar to those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted.
この実施形態においては、レーザセンサ(10)を用いて、コンベヤベルト(１)の下面(1a)の形状を連続的に監視する。コンベヤベルト(１)の下面(1a)には、温度センサ(２)と圧力センサ(３)の外には、何も設置されない。 In this embodiment, the shape of the lower surface (1a) of the conveyor belt (1) is continuously monitored using the laser sensor (10). Nothing is installed outside the temperature sensor (2) and the pressure sensor (3) on the lower surface (1a) of the conveyor belt (1).
レーザセンサ(10)は、コンベヤベルト(１)の下面(1a)にスリット状のレーザ光を照射し、三角法原理により対象物の形状を認識する。レーザセンサ(10)も、コンベヤベルト(１)下方の比較的遠距離に配置することができるため、コンベヤベルト(１)の撓みによる破損を回避することができる。 The laser sensor (10) irradiates the lower surface (1a) of the conveyor belt (1) with a slit-shaped laser beam, and recognizes the shape of the object by the trigonometric principle. Since the laser sensor (10) can also be disposed at a relatively long distance below the conveyor belt (1), it is possible to avoid damage due to the bending of the conveyor belt (1).
レーザセンサ(10)は、送受信装置(５)とともに、データ処理装置(６)に接続されており、データ処理装置(６)は、レーザセンサ(10)からの信号により、コンベヤベルト(１)の垂れ下がりや、穴あきによる反射レーザ光の不認識等があった場合には、直ちに制御機構を介してコンベヤベルト(１)の稼動を停止させる。 The laser sensor (10) is connected to the data processing device (6) together with the transmission / reception device (5). The data processing device (6) is connected to the conveyor belt (1) by a signal from the laser sensor (10). If there is any unrecognition of reflected laser light due to drooping or perforation, the operation of the conveyor belt (1) is immediately stopped via the control mechanism.
この実施形態においては、亀裂等の検知のために、コンベヤベルト(１)に連続的に検知用の素子を設ける必要がないため、システム全体の構築に係るコストを節減することができる。 In this embodiment, since it is not necessary to continuously provide detection elements on the conveyor belt (1) for detecting cracks and the like, the cost for constructing the entire system can be reduced.
図３は、本発明の第３の実施形態を示す。この図においても、図１と同様の要素には同一の符号を付して、説明を省略する。 FIG. 3 shows a third embodiment of the present invention. In this figure as well, the same elements as those in FIG.
この実施形態においては、コンベヤベルト(１)の下面(1a)に、永久磁石(20)を所定の間隔を開けて連続的に埋設してある。 In this embodiment, permanent magnets (20) are continuously embedded at a predetermined interval in the lower surface (1a) of the conveyor belt (1).
コンベヤベルト(１)の下方には、磁気センサ(21)が設置されている。磁気センサには種々のタイプのものがあるが、この実施形態においては、ホール素子センサを用いている。 A magnetic sensor (21) is installed below the conveyor belt (1). There are various types of magnetic sensors. In this embodiment, Hall element sensors are used.
永久磁石(20)が、コンベアベルト(１)とともに移動すると、磁気センサ(21)は、永久磁石(20)から自己に向かう磁束の量の変化を測定して、直近の永久磁石(20)の位置を、所定の時間間隔で検出することができる。亀裂や縦裂きによって、永久磁石(20)が落下すれば、定められた時間に永久磁石(20)の位置を知ることができなくなるため、コンベヤベルトの異常を知ることができる。 When the permanent magnet (20) moves together with the conveyor belt (1), the magnetic sensor (21) measures a change in the amount of magnetic flux directed from the permanent magnet (20) to itself, and detects the latest permanent magnet (20). The position can be detected at predetermined time intervals. If the permanent magnet (20) falls due to a crack or vertical tear, it becomes impossible to know the position of the permanent magnet (20) at a predetermined time, so that the abnormality of the conveyor belt can be known.
磁気センサ(21)は、送受信装置(５)とともに、データ処理装置(６)に接続されており、データ処理装置(６)は、永久磁石(20)の欠損を判定した場合には、直ちに制御機構を介してコンベヤベルト(１)の稼動を停止させる。 The magnetic sensor (21) is connected to the data processing device (6) together with the transmission / reception device (5). When the data processing device (6) determines that the permanent magnet (20) is missing, the magnetic sensor (21) is immediately controlled. The operation of the conveyor belt (1) is stopped via the mechanism.
コンベヤベルトに連続的に設置される多数の永久磁石は、安価であるため、この実施形態においても、システム全体の構築に係るコストを節減することができる。 Since a large number of permanent magnets continuously installed on the conveyor belt are inexpensive, the cost for constructing the entire system can be reduced also in this embodiment.
(１) コンベヤベルト
(1a) 下面
(２) 温度センサ
(３) 圧力センサ
(４) トランスポンダ
(５） 送受信装置
(６) データ処理装置
(10) レーザセンサ
(20) 永久磁石
(21) 磁気センサ
(1) Conveyor belt
(1a) Bottom surface
(2) Temperature sensor
(3) Pressure sensor
(4) Transponder
(5) Transmitter / receiver
(6) Data processing device
(10) Laser sensor
(20) Permanent magnet
(21) Magnetic sensor
Claims (5)
コンベヤベルトの表層部または内部に、長さ方向において所定の間隔を開けて連続的に設置されるとともに、自己の識別情報を保持し、かつ外部から非接触的にエネルギーを得て、コンベヤベルトの温度および圧力の少なくとも一方を計測し、計測値を前記自己の識別情報と併せて電波に載せて発信する計測手段と、
コンベアベルトから所定の距離を離間して所定の固定位置に設置され、前記トランスポンダおよび計測手段に対して所定の大きさの電磁エネルギーを発するとともに、これらトランスポンダおよび計測手段から、自己の識別情報および計測値を載せた電波を受信する送受信装置と、
前記送受信装置と接続され、この送受信装置から、トランスポンダおよび計測手段より送られた識別情報および計測値の提供を受けて、コンベヤベルトの形状変化ならびに温度および／または圧力の異常を判断するデータ処理装置とを備えるコンベアベルトのモニタリングシステム。 This identification information is continuously installed on the surface layer or inside of the conveyor belt at a predetermined interval in the length direction, while retaining its own identification information and obtaining energy from the outside in a non-contact manner. A transponder that sends
It is continuously installed on the surface layer or inside of the conveyor belt at a predetermined interval in the length direction, while retaining its own identification information and obtaining energy from the outside in a non-contact manner. Measuring means for measuring at least one of temperature and pressure and transmitting the measured value on radio waves together with the identification information of the self; and
A predetermined distance from the conveyor belt is set at a predetermined fixed position, and electromagnetic energy of a predetermined magnitude is emitted to the transponder and the measuring means. From the transponder and the measuring means, self identification information and measurement are performed. A transmission / reception device that receives radio waves carrying values;
A data processing device connected to the transmitting / receiving device and receiving identification information and measurement values sent from the transponder and measuring means from the transmitting / receiving device to determine a change in the shape of the conveyor belt and an abnormality in temperature and / or pressure. Conveyor belt monitoring system.
コンベヤベルトの表層部または内部に、長さ方向において所定の間隔を開けて連続的に設置されるとともに、自己の識別情報を保持し、かつ外部から非接触的にエネルギーを得て、コンベヤベルトの温度および圧力の少なくとも一方を計測し、計測値を前記自己の識別情報と併せて電波に載せて発信する計測手段と、
コンベアベルトから所定の距離を離間して所定の固定位置に設置され、前記計測手段に対して所定の大きさの電磁エネルギーを発するとともに、この計測手段から、自己の識別情報および計測値を載せた電波を受信する送受信装置と、
前記レーザセンサおよび送受信装置と接続され、これらレーザセンサおよび送受信装置から、それぞれレーザセンサの得たデータ、および計測手段より送られた識別情報および計測値の提供を受けて、コンベヤベルトの形状変化ならびに温度および／または圧力の異常を判断するデータ処理装置とを備えるコンベアベルトのモニタリングシステム。 A laser sensor installed outside the conveyor belt and capable of detecting the shape change of the conveyor belt in a non-contact manner;
It is continuously installed on the surface layer or inside of the conveyor belt at a predetermined interval in the length direction, while retaining its own identification information and obtaining energy from the outside in a non-contact manner. Measuring means for measuring at least one of temperature and pressure and transmitting the measured value on radio waves together with the identification information of the self; and
A predetermined distance from the conveyor belt is set at a predetermined fixed position, and electromagnetic energy of a predetermined size is emitted to the measuring means, and self-identification information and measured values are placed from the measuring means. A transmitting / receiving device for receiving radio waves;
It is connected to the laser sensor and the transmission / reception device, and receives the data obtained by the laser sensor and the identification information and measurement value sent from the measurement means from the laser sensor and the transmission / reception device, respectively. A monitoring system for a conveyor belt, comprising a data processing device for determining a temperature and / or pressure abnormality.
コンベヤベルトの表層部または内部に、長さ方向において所定の間隔を開けて連続的に設置されるとともに、自己の識別情報を保持し、かつ外部から非接触的にエネルギーを得て、コンベヤベルトの温度および圧力の少なくとも一方を計測し、計測値を前記自己の識別情報と併せて電波に載せて発信する計測手段と、
コンベアベルトから所定の距離を離間して所定の固定位置に設置され、前記計測手段に対して所定の大きさの電磁エネルギーを発するとともに、これら磁気センサおよび計測手段から、自己の識別情報および計測値を載せた電波を受信する送受信装置と、
前記磁気センサおよび送受信装置と接続され、これらの磁気センサおよび送受信装置から、それぞれ磁気センサの得たデータ、および計測手段より送られた識別情報および計測値の提供を受けて、コンベヤベルトの形状変化ならびに温度および／または圧力の異常を判断するデータ処理装置とを備えるコンベアベルトのモニタリングシステム。
A permanent magnet that is continuously installed at a predetermined interval in the length direction in the surface layer portion or inside of the conveyor belt, and a permanent magnet that is installed at a predetermined fixed position at a predetermined distance from the conveyor belt. A magnetic sensor capable of detecting a change in the amount of magnetic flux emitted from
It is continuously installed on the surface layer or inside of the conveyor belt at a predetermined interval in the length direction, while retaining its own identification information and obtaining energy from the outside in a non-contact manner. Measuring means for measuring at least one of temperature and pressure and transmitting the measured value on radio waves together with the identification information of the self; and
A predetermined distance away from the conveyor belt is installed at a predetermined fixed position, emits a predetermined amount of electromagnetic energy to the measuring means, and the self-identification information and measured values from these magnetic sensors and measuring means. A transmitting / receiving device for receiving radio waves carrying
A change in the shape of the conveyor belt connected to the magnetic sensor and the transmission / reception device, receiving data obtained from the magnetic sensor and identification information and measurement values sent from the measuring means from the magnetic sensor and the transmission / reception device, respectively. And a conveyor belt monitoring system comprising a data processing device for determining temperature and / or pressure anomalies.
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Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008179447A (en) * | 2007-01-24 | 2008-08-07 | Bridgestone Corp | Conveyor belt monitoring device |
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