JP2014021907A - Relocation detection mechanism and relocation detection device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a relocation detection mechanism in which reduction in size of a relocation detection device can be achieved with a simple configuration, current consumption is small, operation even in a battery is made possible for several years, and relocation of an industrial device can be surely detected without erroneous detection due to vibration such as earthquake, and also to provide the relocation detection device using the same.SOLUTION: A relocation detection mechanism for detecting relocation of a machine to be mounted includes: a rotor which is rotatably arranged; and a switch element whose switch is turned on and off in accordance with rotational movement of the rotor. The rotor is constituted so as to be rotated and moved in accordance with rotational movement of the machine to be mounted.

Description

  The present invention uses a relocation detection mechanism for detecting relocation of an industrial machine and the relocation detection mechanism in order to prevent unauthorized resale and retransfer of industrial machines such as machine tools and measuring instruments installed. The present invention relates to a relocation detection device.

  Industrial machines such as high-performance machine tools and measuring instruments (hereinafter simply referred to as “industrial machines”) may be strictly managed for the relocation of machines in consideration of security issues such as unauthorized military use. It is required by law. For this reason, manufacturers of industrial machines and the like attach a relocation detection device for managing relocation of industrial machines to industrial machines.

  In this way, the relocation detection device uses, for example, a GPS (Global Positioning System), an acceleration sensor, a gyroscope, a digital camera, etc., to detect vibrations and rotational movements associated with relocation, and when relocation is detected, The industrial machine itself is configured not to operate.

  When using a GPS or an acceleration sensor or the like to detect vibration or rotational movement associated with the relocation, it is necessary to keep the GPS or acceleration sensor or the like operating at all times. For this reason, since the industrial machine itself has not been used for a long period of time, the relocation detection device is equipped with a battery for operating a GPS, an acceleration sensor, or the like.

  However, since a GPS, an acceleration sensor, and the like have a current consumption of 10 mA or more, the battery can operate only for several days to several months. In addition, if a large-capacity battery is used in order to lengthen the battery operable period, the relocation detection device itself may become large and may not be attached to a small industrial machine.

  For this reason, Patent Document 1 proposes a relocation detection device for performing relocation detection without using a battery. In Patent Document 1, as shown in FIG. 7, a disk-like rotating body 102 that is horizontally disposed in a case (not shown) and moves horizontally only when vibration in the horizontal rotation direction is applied to the case. In addition, there is disclosed a relocation detection apparatus 100 including an imaging apparatus 104 that captures the surface of a rotating body when power is supplied to an industrial machine or the like.

  A pattern is drawn on the surface of the rotator 102. The pattern is photographed by the imaging device 104, and the rotator 102 is horizontally rotated by comparing new image data with previously captured image data. Whether or not the industrial machine has been moved.

  The relocation detection apparatus 100 compares the “new image data” taken when the power is turned on with the “previously taken image data” taken when the power is turned on. A storage device (not shown) for storing is provided.

  Reference numerals 106a and 106b are holding means for holding the rotating body 102 in a freely rotatable manner.

JP 2009-8571 A

  However, since the relocation detection device 100 disclosed in Patent Document 1 uses an imaging device 104 such as a digital camera and a storage device such as a hard disk, there is a limit to downsizing the relocation detection device 100.

  In addition, if the "image data taken before" is damaged due to a failure of the storage device, an error occurs when the power is turned on even though it has not been relocated, and the industrial machine is operating normally. It may stop working.

  In view of such a current situation, the present invention can reduce the size of the relocation detection device with a simple configuration, has a low current consumption, can operate for several years even with a battery, and can vibrate due to earthquakes and the like. It is an object of the present invention to provide a relocation detection mechanism that can reliably detect the relocation of an industrial device without misdetection due to, and a relocation detection device using the same.

The present invention was invented to solve the problems in the prior art as described above, the transfer detection mechanism of the present invention is a transfer detection mechanism for detecting the transfer of a mounted machine,
A rotating body arranged to be freely rotatable;
A switch element that switches between ON and OFF of the switch in accordance with the rotational movement of the rotating body;
With
The rotating body is configured to rotate with the rotational movement of the mounted machine.

  With this configuration, when a rotational movement occurs with the relocation of the mounted machine, the rotating element rotates and the switching element is repeatedly switched ON and OFF.

  For this reason, it is possible to accurately detect the relocation of the mounted machine. On the other hand, for example, in a vibration such as an earthquake, the rotating body does not rotate greatly, so that erroneous detection due to vibration does not occur.

Further, in the relocation detection mechanism of the present invention, the switch element is
One electrode to which an electrical signal is input;
A switch electrode electrically connected to the one electrode;
The other electrode arranged to contact the switch electrode;
Consisting of
The switch electrode may include a plurality of insulating members arranged at a predetermined interval in the rotation direction of the rotating body, and may be configured such that the switch is switched on and off with the rotational movement of the rotating body.

  In this case, it is preferable that the insulating member includes a locking recess, and the other electrode includes a locking protrusion that engages with the locking recess.

Further, in the relocation detection mechanism of the present invention, the switch element is
A plurality of magnets arranged at predetermined intervals in the rotation direction of the rotating body;
A magnetic sensor arranged to face the plurality of magnets;
With
An electric signal can be output from the magnetic sensor when the plurality of magnets and the magnetic sensor are close to each other.

  In this case, it is preferable to provide an alignment magnet arranged so that the rotating body stops in a state where the plurality of magnets and the magnetic sensor are not close to each other.

  Thus, by using a switch electrode, a magnetic sensor, etc., it is possible to detect the rotational movement of the rotating body with low current consumption, for example, even when operated by a power storage device such as a dry battery or a nickel metal hydride battery. Can be able to operate for several years.

  In the relocation detection mechanism of the present invention, the rotating body may be disposed horizontally or vertically, and includes both a horizontally disposed rotating body and a vertically disposed rotating body. It doesn't matter.

Further, the relocation detection device of the present invention is a relocation detection device for detecting relocation of a mounted machine,
The relocation detection mechanism according to any one of the above,
A control circuit to which an electrical signal output from the relocation detection mechanism is input;
A power storage device that supplies power for operating the relocation detection mechanism and the control circuit;
It is characterized by providing.

In the relocation detection device of the present invention, the control circuit is connected to a control means for controlling the operation of the mounted machine,
In the control circuit, when it is determined that the number of times the switch element has been turned on has reached a predetermined threshold value, a transfer determination signal is output to the control means so that the mounted machine does not operate. can do.

  In this way, a control circuit is used to switch the ON / OFF of the switch element of the transfer detection mechanism using the transfer detection mechanism configured of the rotary body and the switch element that switches ON / OFF of the switch according to the rotational movement of the rotary body. Therefore, it is possible to detect the relocation of the mounted machine with low current consumption.

  For this reason, even if the mounted machine is left unattended for several years, the relocation detection device can be operated normally without the power storage device being in a so-called battery exhaustion state. For this reason, when a to-be-attached machine is not moved, it becomes possible to operate a to-be-attached machine normally.

  In the relocation detection device of the present invention, when the supply of power from the power storage device to the control circuit is interrupted, a relocation determination signal is output to the control means so that the mounted machine does not operate. Can be configured.

  By configuring in this way, when the power of the power storage device is reduced and the battery is in a state of running out, or when the power storage device is removed, there is a possibility that relocation may be performed illegally, The relocation determination signal can be output so that the mounted machine does not operate normally.

  Further, the relocation detection apparatus of the present invention can be configured to exchange signals between the control circuit and the control means of the mounted machine to control the operation of the mounted machine.

  By comprising in this way, it can prevent operating a to-be-attached machine by unjust means, such as removing a transfer detection apparatus from a to-be-attached machine, for example.

  According to the present invention, by using a rotating body that rotates when a vibration in a predetermined rotation direction is applied as a switch, it is possible to reliably detect the relocation of an industrial device without erroneous detection due to vibration such as an earthquake. In addition, current consumption is small, and for example, a power storage device such as a dry battery or a nickel metal hydride battery can be operated for several years.

  Further, since the transfer detection mechanism is composed only of a rotating body and a switch element for using the rotating body as a switch, it is easy to reduce the size and reduce the manufacturing cost.

FIG. 1 is a schematic configuration diagram for explaining the configuration of a relocation detection apparatus according to an embodiment of the present invention. FIG. 2 is a schematic configuration diagram for explaining an example of a relocation detection mechanism used in the relocation detection device of FIG. FIG. 3 is an enlarged configuration diagram illustrating a part of the switch element of the relocation detection mechanism of FIG. FIG. 4 is a schematic configuration diagram for explaining a modification of the relocation detection mechanism of FIG. FIG. 5 is a schematic configuration diagram for explaining another example of the relocation detection mechanism 10. FIG. 6 is a schematic configuration diagram for explaining a modification of the relocation detection mechanism 10 shown in FIG. FIG. 7 is a schematic configuration diagram for explaining the configuration of a conventional relocation detection mechanism.

Hereinafter, embodiments (examples) of the present invention will be described in more detail based on the drawings.
FIG. 1 is a schematic configuration diagram for explaining the configuration of a migration detection device according to an embodiment of the present invention, and FIG. 2 is a schematic configuration for explaining an example of a migration detection mechanism used in the migration detection device of FIG. FIGS. 3 and 3 are enlarged configuration diagrams showing a part of the switch element of the moving detection mechanism of FIG. 2 in an enlarged manner.

  As shown in FIG. 1, the relocation detection device 50 of this embodiment includes a relocation detection mechanism 10, a control circuit 60 connected to one electrode 20 and the other electrode 22 of the relocation detection mechanism 10, and a relocation detection mechanism 10. And a power storage device 70 that supplies electric power for operating the control circuit 60.

  In addition, as shown in FIG. 2, the relocation detection mechanism 10 of the present embodiment includes a rotating body 12 that is rotatably arranged, and a switch element 16 that switches between ON and OFF with the rotational movement of the rotating body 12. It consists of and.

  In the relocation detection mechanism 10 of the present embodiment, the rotating body 12 is arranged horizontally, and is configured to be held in point contact by the holding means 14a and 14b at approximately two points on the upper and lower sides of the rotating body 12. Yes.

  Further, the switch element 16 in the present embodiment is disposed so that the switch electrode 18 electrically connected to one electrode 20 and the other electrode 22 are in contact with each other. The other electrode 22 is attached to the transfer detection device 50 so as not to hinder the rotational movement of the rotating body 12.

  The one electrode 20 and the other electrode 22 are electrically connected to the control circuit 60 of the transfer detection device 50, respectively. In the present embodiment, the holding means 14a is composed of a conductor, and the one electrode 20 and the control circuit 60 are electrically connected via the holding means 14a.

  The switch electrode 18 includes a plurality of insulating members 19 arranged at predetermined intervals in the rotation direction of the rotating body 12. When the other electrode 22 and the switch electrode 18 are in contact, the switch element 16 is When the other electrode 22 and the insulating member 19 are in contact with each other, the switch element 16 is turned off.

  With this configuration, by inputting the electrical signal output from the control circuit 60 to one electrode 20, if the switch element 16 is ON, the electrical signal is output from the other electrode 22, and the switch element 16 If is OFF, no electrical signal is output from the other electrode 22.

  In addition, the control circuit 60 counts the number of times the switch element 16 is turned on and the signal detection circuit 62 that detects whether the switch element 16 of the relocation detection mechanism 10 is turned on and off, and the switch element 16 is turned on. And a counter determination circuit 64 that outputs a transfer determination signal when the number of times reaches a predetermined threshold.

  The counter judgment circuit 64 of the control circuit 60 is connected to a control means 80 for controlling the operation of an industrial machine (hereinafter referred to as “attached machine”) to which the relocation detection device 50 is attached. When the transfer determination signal is output from the circuit 64, the mounted machine is configured not to operate.

  The power storage device 70 is connected to one electrode 20 and the other electrode 22 of the relocation detection mechanism 10 via the control circuit 60, and is energized only when the switch element 16 is ON, An electrical signal will flow.

  The power storage device 70 may be, for example, a primary battery such as a dry battery or a mercury battery, or a secondary battery such as a nickel hydride storage battery or a lithium ion storage battery. When the attached machine is operating, the power storage device 70 can be charged with electric power from the attached machine side.

  In addition, the power storage device 70 is connected to the counter determination circuit 64 of the control circuit 60, and when the power of the power storage device 70 decreases and the battery is out of battery, or the power storage device 70 is removed. When power supply from the power storage device 70 to the counter determination circuit 64 is interrupted, the counter determination circuit 64 may detect a power supply error and output a relocation determination signal.

  In this way, when the power supply error is detected, the relocation determination signal is output so that the power storage device 70 is intentionally removed and the relocation detection device 50 is not operated, and the relocation of the mounted machine is performed. Can be prevented.

  The relocation detection device 50 configured as described above is used by being attached to a mounted machine such as a machine tool or a measuring machine, for example. For example, when the mounted machine is suspended by a crane or the like, it is relocated. The mounted machine is likely to rotate and move on a horizontal plane.

  At this time, since the rotating body 12 is held by the holding means 14a and 14b by point contact, even if the mounted machine itself rotates, the rotating body 12 can be viewed from the outside of the mounted machine according to the law of inertia. The stopped state will be maintained.

  However, when viewed from the mounted machine and the moving detection device 50 attached to the mounted machine, the rotating body 12 has been rotated, so in this specification, when the mounted machine itself has been rotated, The description will be made assuming that the rotating body 12 is rotated.

  In the transfer detection mechanism 10 of the present embodiment, the switch electrode 18 includes a plurality of insulating members 19 arranged at predetermined intervals in the rotation direction of the rotating body 12, so that a signal is generated along with the rotational movement of the rotating body 12. The detection circuit 62 detects a pulse signal.

The counter determination circuit 64 counts the number of times that the pulse signal is detected by the signal detection circuit 62 as the number of times the switch element 16 is turned on.
When the number of times that the switch element 16 is continuously turned on reaches a predetermined angle determination number (threshold), that is, a pulse signal detected at a predetermined time reaches a predetermined angle determination number (threshold). In this case, it is determined that the mounted machine has been moved, assuming that the rotating body 12 has rotated more than a predetermined angle, and a transfer determination signal is output from the counter determination circuit 64.

  In addition, the rotation angle of the rotating body 12 when determining that the mounted machine has been transferred should be set as appropriate based on the rotation angle of the mounted machine assumed at the time of transfer depending on the size and weight of the mounted machine. Can do.

  Further, when the accumulated number of pulse signals detected after the relocation detection device 50 starts relocation detection reaches a predetermined cumulative determination number (threshold), it is determined that the mounted machine has been relocated, and the counter determination A relocation determination signal may be output from the circuit 64.

  The transfer determination signal may be output to the control means 80 of the mounted machine as an electric signal of a predetermined voltage, for example, but the signal output from the control means 80 is cut off by the counter determination circuit 64. Thus, by not sending a signal from the counter determination circuit 64 to the control means 80, the “0V electrical signal” can be used as the transfer determination signal.

  In other words, the signal output from the control means 80 is returned to the control means 80 via the counter determination circuit 64 in the normal state, and when the transfer is detected, the signal output from the control means 80 is determined as a counter. By shutting off by the circuit 64 and preventing the signal from being returned to the control means 80, the “0 V electrical signal” is input to the control means 80 as the transfer detection signal.

  By using the “0V electric signal” as the transfer determination signal in this way, as described above, even when the supply of power from the power storage device 70 to the counter determination circuit 64 is interrupted, A relocation determination signal can be output to the control means 80 of the mounting machine.

  Further, as shown in FIG. 3, the switch element 16 in the present embodiment includes a locking recess 19a in the insulating member 19, and the other electrode 22 engages with the locking recess 19a. A locking projection 22a is provided.

  With this configuration, when the rotating body 12 is not rotating and moving, that is, when the mounted machine to which the moving detection device 50 is mounted is not moving due to moving or the like, it is insulated from the other electrode 22. The rotating body 12 is stopped in a state where the member 19 is in contact, that is, in a state where the switch element 16 is OFF.

  For this reason, when the mounted machine is normally used or left for a long period of time, the switch element 16 is always OFF, and the signal detection circuit is connected from the power storage device 70 via the switch element 16. The power consumption of the power storage device 70 can be suppressed without energizing 62.

  The relocation detection mechanism 10 includes a switch element 16 that is configured such that the rotating body 12 rotates and rotates with the rotation of the mounted machine, and the switch element 16 switches between ON and OFF with the rotation of the rotating body 12. If provided, the configuration is not limited to the configuration illustrated in FIGS. 2 and 3, and for example, a configuration such as the modification illustrated in FIG. 4 may be employed.

  In the transfer detection mechanism 10 shown in FIG. 4A, one electrode 20 is electrically connected to the upper edge portion 18a of the switch electrode 18 where the insulating member 19 is not disposed. Even in this case, one electrode 20 is always electrically connected to the switch electrode 18.

  Further, in the transfer detection mechanism 10 shown in FIG. 4B, one electrode 20 and the other electrode 22 are arranged so as to contact the switch electrode 18, and as the rotary body 12 rotates, The electrode 20 and the other electrode 22 are configured to be electrically connected to the switch electrode 18 at the same time.

  Even in the case of such a configuration, the switch element 16 is switched between ON and OFF with the rotational movement of the rotating body 12.

  In this embodiment, the rotating body 12 is arranged horizontally to detect the rotational movement in the horizontal direction of the mounted machine to which the transfer detecting device 50 is attached. The vertical movement of the mounted machine to which the relocation detection device 50 is attached can also be detected by arranging them vertically.

  In addition, the relocation detection device 50 includes both the relocation detection mechanism 10 in which the rotator 12 is disposed horizontally and the relocation detection mechanism 10 in which the rotator 12 is disposed vertically. Both the horizontal rotational movement and the vertical rotational movement of the attached machine can be detected, and the relocation of the machine to be attached can be detected more accurately.

  In addition, during operation or during operation of the mounted machine, an operation confirmation signal and an operation permission signal are exchanged between the control unit 80 of the mounted machine and the control circuit 60 of the relocation detecting device 50 to control the operation of the mounted machine. It can also be comprised so that it can perform.

By comprising in this way, when the transfer detection apparatus 50 is removed from a to-be-attached machine, it can control so that a to-be-attached machine does not operate | move.
Specifically, when the operation confirmation signal is output from the control means 80 to the control circuit 60 and the control circuit 60 determines that the operation confirmation signal is a normal signal, the operation permission signal is transmitted from the control circuit 60 to the control means Output to 80.

The control unit 80 can control the attached machine to operate only when the control unit 80 determines that the operation permission signal is a normal signal.
The operation confirmation signal and the operation permission signal are not particularly limited. For example, an irregular signal is controlled as the operation confirmation signal in order to prevent the mounted machine from being operated by unauthorized means. The signal output to the circuit 60 and subjected to predetermined signal processing in the control circuit 60 can be output to the control means 80 as an operation permission signal.

  With this configuration, the operation permission signal becomes a signal based on the operation confirmation signal that is an irregular signal, and it becomes difficult to operate the mounted machine by unauthorized means.

FIG. 5 is a schematic configuration diagram for explaining another example of the relocation detection mechanism 10.
The relocation detection mechanism 10 of this embodiment is basically the same configuration as the relocation detection mechanism 10 shown in FIGS. 2 to 4, and the same components are denoted by the same reference numerals, Detailed description is omitted.

  Further, the configuration of the relocation detection device 50 using the relocation detection mechanism 10 of the present embodiment is basically the same as that of the relocation detection device 50 shown in FIG.

  The transfer detection mechanism 10 shown in FIG. 5 includes a rotating body 12 and a plurality of magnets 24 arranged at predetermined intervals in the rotation direction of the rotating body 12. A Hall element 26 is arranged at a position facing the plurality of magnets 24 as a magnetic sensor for detecting the magnetic force of the magnets 24.

  The hall element 26 is connected to the signal detection circuit 62 of the control circuit 60. When the magnet 24 approaches the hall element 26 and detects a magnetic force, an electric signal proportional to the magnitude of the magnetic force is sent to the signal detection circuit 62. Output to.

Thus, by arranging the magnet 24 and the hall element 26 at positions facing each other, the magnet 24 and the hall element 26 function as the switch element 16.
That is, with the rotational movement of the rotating body 12, the switch element 16 is turned on when the magnet 24 approaches the hall element 26 at a constant cycle. Will be detected.

  As shown in FIG. 5, when the rotating body 12 is not rotationally moved, that is, when the mounted machine to which the relocation detecting device 50 is attached is not moved due to relocation or the like, the magnet 24 and the Hall element It is preferable to provide a positioning magnet 28 so that the rotating body 12 stops in a state where it is not in proximity to 26, that is, in a state where the switch element 16 is OFF.

  As described above, by providing the alignment magnet 28, the rotating body 12 stops when the rotating body 12 is not rotated and the magnet 24 and the positioning magnet 28 come close to each other. No signal is output from the hall element 26 to the signal detection circuit 62.

  For this reason, the switch element 16 is always OFF when the mounted machine is normally used or left for a long period of time, and the power storage device 70 to the Hall element 26 and the signal detection circuit 62. The power consumption of the power storage device 70 can be suppressed without energization.

  In the transfer detection mechanism 10 shown in FIG. 5, the plurality of magnets 24 are arranged on the side surface of the rotating body 12. As shown in FIG. 6, a plurality of magnets 24 can be arranged on the upper surface 12 a of the rotating body 12.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to this. In the above embodiment, the case where an electrode is used as a switch element and the case where a Hall element is used are described. Various changes can be made without departing from the object of the present invention, such as a combination of an LED (Light Emitted Diode) and a photoelectric element to form a switch element.

DESCRIPTION OF SYMBOLS 10 Transfer detection mechanism 12 Rotating body 12a Upper surface 14a Holding means 14b Holding means 16 Switch element 18 Switch electrode 18a Upper edge 19 Insulating member 19a Locking recess 20 One electrode 22 The other electrode 22a Locking protrusion 24 Magnet 26 Hall element 28 Alignment magnet 50 Transfer detection device 60 Control circuit 62 Signal detection circuit 64 Counter determination circuit 70 Power storage device 80 Control means 100 Transfer detection device 102 Rotating body 104 Imaging device 106a Holding means 106b Holding means

Claims (11)

A relocation detection mechanism for detecting relocation of a mounted machine,
A rotating body arranged to be freely rotatable;
A switch element that switches between ON and OFF of the switch in accordance with the rotational movement of the rotating body;
With
A moving detection mechanism configured to rotate the rotating body with the rotational movement of the mounted machine. The switch element is
One electrode to which an electrical signal is input;
A switch electrode electrically connected to the one electrode;
The other electrode arranged to contact the switch electrode;
Consisting of
The switch electrode includes a plurality of insulating members arranged at predetermined intervals in the rotation direction of the rotating body, and is configured to be switched on and off with the rotational movement of the rotating body. The relocation detection mechanism according to claim 1.   The transfer detection mechanism according to claim 2, wherein the insulating member includes a locking recess, and the other electrode includes a locking protrusion that engages with the locking recess. The switch element is
A plurality of magnets arranged at predetermined intervals in the rotation direction of the rotating body;
A magnetic sensor arranged to face the plurality of magnets;
With
The relocation detection mechanism according to claim 1, wherein an electric signal is output from the magnetic sensor when the plurality of magnets and the magnetic sensor are close to each other.   The relocation detection mechanism according to claim 4, further comprising an alignment magnet arranged so that the rotating body stops in a state where the plurality of magnets and the magnetic sensor are not close to each other.   The relocation detection mechanism according to claim 1, wherein the rotating body is disposed horizontally.   The relocation detection mechanism according to claim 1, wherein the rotating body is arranged vertically. A relocation detection device for detecting relocation of a mounted machine,
The relocation detection mechanism according to any one of claims 1 to 7,
A control circuit to which an electrical signal output from the relocation detection mechanism is input;
A power storage device that supplies power for operating the relocation detection mechanism and the control circuit;
A relocation detection apparatus comprising: The control circuit is connected to control means for controlling the operation of the mounted machine,
In the control circuit, when it is determined that the number of times the switch element has been turned on has reached a predetermined threshold value, a transfer determination signal is output to the control means so that the mounted machine does not operate. The relocation detection apparatus according to claim 8.   10. The apparatus according to claim 9, wherein when the supply of power from the power storage device to the control circuit is interrupted, a transfer determination signal is output to the control means so that the mounted machine does not operate. The relocation detection device described in 1.   The transfer detection according to claim 9 or 10, wherein a signal is exchanged between the control circuit and a control unit of the mounted machine so that operation control of the mounted machine can be performed. apparatus.

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