JP6487227B2 - Detection method and detection apparatus - Google Patents

Description

  The present invention relates to a detection method and a detection apparatus, and more particularly to a detection method and a detection apparatus for detecting a coordinate value of a target detection point.

  2. Description of the Related Art Conventionally, a detection method for detecting a coordinate value of a predetermined point by bringing a sensor into contact with the predetermined point in order to position a constituent member in various apparatuses or the like is known.

Such a sensor is provided with a contact having conductivity to be brought into contact with a predetermined point to be detected. The sensor touches the predetermined point or touches it from the touched state. You will get the coordinate value when it changes to the state that is not.

  As an apparatus using such a detection method, for example, there is a processing apparatus that processes a workpiece in three dimensions based on predetermined data by numerical control using a microcomputer or the like.

  In such a processing apparatus, the main shaft to which the processing tool is attached and the work holding part for holding the work move in the X-axis direction, the Y-axis direction, and the Z-axis direction of the XYZ orthogonal coordinate system, or around each axis. By turning, the processing tool is brought into contact with a predetermined position of the workpiece at a predetermined angle, and the workpiece is cut by the processing tool to be formed into a desired shape.

And at the time of a cutting process, coolant liquid is injected with respect to the part into which the workpiece | work is cut with the processing tool, and the friction in the said part is suppressed and the said part is cooled.

  Here, in such a processing apparatus, each member such as positioning on the XY plane at the center of the spindle and positioning of the angular position of the workpiece holding portion when holding the workpiece is set at a desired timing such as factory shipment or parts replacement. Processing for positioning is performed.

  More specifically, in this positioning process, a correction jig or the like is used to detect coordinate values of a plurality of detection points determined in advance in the correction jig or the work holding unit, and the detected coordinate values are stored in advance. A correction value is calculated from the coordinate value of the detected point, and each member is positioned using this correction value.

  Specifically, the correction jig is attached to the work holding part, and the main shaft to which the sensing pin as a conductive contact is attached is moved to a plurality of detection points provided on the work holding part and the correction jig. By contacting the sensing pin, the coordinate value at each detection point is acquired.

  In addition, the main shaft to which such a sensing pin is attached is configured to detect electrical continuity when the sensing pin comes into contact with each detection point of a correction jig formed of a metal material or a workpiece holding unit.

  When acquiring the coordinate value of a predetermined detection point, first, the sensing pin is brought into contact with the detection point by moving the main shaft to which the sensing pin is attached in a predetermined direction.

  The determination of “contacted” or “not contacted” is made based on the presence or absence of detection of conduction in the main shaft.

  Thereafter, the spindle is moved in the direction opposite to the predetermined direction, the sensing pin is moved away from the detection point, and the coordinate value when the sensing pin is moved away from the detection point is acquired.

And a correction value is calculated using the coordinate value of the acquired detection point, and positioning of each member will be performed based on the calculated correction value.

  As a more specific procedure of the detection point detection method, first, in order to bring the sensing pin into contact with the detection point, the sensing pin is moved in a predetermined direction (refer to FIGS. 1A and 1B). ).

  Thereafter, when the sensing pin comes into contact with the detection point, continuity is detected in the main shaft. At this time, when conduction is detected in the main shaft, the main shaft stops moving in a predetermined direction. (See FIGS. 1C and 1D.) That is, the movement of the sensing pin in the predetermined direction is stopped.

  Next, the sensing pin is moved in a direction opposite to a predetermined direction from the position where the sensing pin is stopped (see FIGS. 1E and 1F), and a position where conduction is not detected on the main shaft is obtained and obtained. The coordinate value of the position is acquired as the coordinate value of the detection point.

Thereby, the coordinate value of a detection point can be acquired correctly.

  Here, in such a processing apparatus, a coolant liquid is ejected to a processing tool or a workpiece at the time of cutting in order to suppress friction or to cool.

  For this reason, coolant liquid will adhere to each structural member, such as a work holding part and a main shaft, which are located in the machining space.

  Such a coolant liquid is an aqueous solution containing various additives and exhibits electrical conductivity.

Therefore, when performing the positioning process, each component member in the machining space (particularly, the workpiece holding unit in which the detection point is set, the correction jig attached to the workpiece holding unit, and the workpiece holding are performed by the operator in advance. It is necessary to wipe off the coolant liquid adhering to the main part and the main shaft moving above the correction jig.

  However, such a wiping operation of the coolant liquid is an operation performed by a person, and thus the wiping operation of the coolant liquid may not be sufficient.

  In this case, when the coolant liquid is positioned on the detection point, the sensing pin that moves in a predetermined direction comes into contact with the coolant liquid before coming into contact with the detection point, thereby detecting conduction on the main shaft (FIG. (See 2 (a) (b)). When the main shaft detects conduction, the main shaft stops moving in a predetermined direction.

  After that, the main shaft is moved in a direction opposite to the predetermined direction from the position where the conduction is detected. At this time, while the main shaft moves by a certain distance in the reverse direction due to the surface tension of the coolant liquid, (See FIG. 2 (c).) When the moving distance in the reverse direction exceeds a certain distance, the coolant liquid is separated from the sensing pin, thereby preventing conduction on the main shaft (see FIG. 2). 2 (d).)

  Then, the coordinate value of the position where conduction is no longer detected on the main axis (that is, the position that is not the detection point) is acquired, and this coordinate value is used as the coordinate value of the detection point.

As described above, if the coolant liquid is not sufficiently wiped off, the accurate coordinate value of the detection point may not be acquired, and the positioning process cannot always be performed accurately. It had been.

For this reason, when the liquid which shows electroconductivity, such as coolant liquid, has adhered to the detection point, the proposal of the detection method and detection apparatus which detect that the detection point was not able to be detected correctly was desired.

  Note that the prior art that the applicant of the present application knows at the time of filing a patent application is not an invention related to a known literature invention, and therefore there is no prior art document information to be described in the present specification.

  The present invention has been made in view of the above-mentioned demands of the prior art, and the object of the present invention is to accurately detect a detection point when a conductive liquid adheres to the detection point. It is an object of the present invention to provide a detection method and a detection device that can detect the failure.

  In order to achieve the above object, a detection method according to the present invention comprises a contact having electrical conductivity, a detection means for detecting electrical continuity when the contact comes in contact with a detection point, and the detection means. In a detection method for detecting a detection point where a conductive liquid may adhere by a detection device having a moving means that moves, when detection of the detection point is started, the contact of the detection means is When moving in the first direction toward the detection point and detecting the continuity by the detection means, the contact of the detection means is moved in a second direction opposite to the first direction. A movement control step for controlling movement of the moving means; a measuring step for measuring the distance that the contact of the detecting means moved by the moving means has moved in the second direction; and the contact in the measuring step. In the second direction The detection point is determined only when it is determined whether the moved distance is equal to or greater than the first value and the distance that the contact is moved in the second direction is equal to or greater than the first value. The detection device executes a determination step of determining that the detection point cannot be accurately detected due to the adhesion of the liquid.

  In the detection method according to the present invention, in the detection method described above, if it is determined in the determination step that the liquid adheres to the detection point and the detection point cannot be accurately detected, the detection point is The detection device performs a warning process for giving a warning that the detection point cannot be accurately detected due to liquid adhesion.

  The detection method according to the present invention is such that the first value is determined based on the surface tension of the liquid.

  Further, the detection method according to the present invention comprises a contact having conductivity, and a detecting means for detecting electrical continuity when the contact comes into contact with a detection point, and a moving means for moving the detecting means. In a detection method for detecting a detection point where a conductive liquid may be attached by a detection device having the detection device, when the detection of the detection point is started, the contact of the detection means is moved to the detection point. When the continuity is detected by the detection means, the movement means is moved so that the contact of the detection means is moved in a second direction opposite to the first direction. The movement control step for controlling, the distance of the contact of the detection means moved by the movement means being moved in the second direction, and the contact of the detection means moved by the movement means are First person A measuring step for measuring the distance moved to the first position, and whether or not the distance that the contact has moved in the second direction is equal to or greater than a first value, and the contact in the first direction. It is determined whether or not the distance moved is equal to or greater than the second value, and only when it is determined that the distance that the contact has moved in the second direction is equal to or greater than the first value. The detection point can be found only when it is determined that the detection point cannot be detected due to the liquid adhering and the distance that the contact has moved in the first direction is greater than or equal to the second value. Therefore, if it is determined in the determination step that the liquid adheres to the detection point and the detection point cannot be detected accurately, the detection point cannot be detected. To detect the above detection points accurately. If it is determined that the detection point cannot be detected because the detection point cannot be found in the determination step, the detection point cannot be detected and the detection point cannot be detected. The above-described detection apparatus executes a warning process for performing the above.

  In addition, a detection device according to the present invention is a detection device for detecting a detection point to which a conductive liquid may adhere, and has a contact having conductivity, and the contact is in contact with the detection point. Then, when the detection means for detecting electrical continuity, the moving means for moving the detection means, and the detection of the detection point are started, the contact of the detection means moves in the first direction toward the detection point. When the continuity is detected by the detection means, a movement control means for controlling the movement means to move the contact of the detection means in a second direction opposite to the first direction. Measuring means for measuring the distance that the contact of the detecting means that is moved by the moving means is moved in the second direction; and the distance that the contact is moved in the second direction by the measuring means. Whether or not it is greater than or equal to the first value Only when it is determined that the distance that the contact has moved in the second direction is equal to or greater than the first value, the liquid adheres to the detection point and the detection point cannot be accurately detected. It is made to have a judgment means to judge.

  In the detection device according to the present invention, in the detection device described above, when the determination unit determines that the liquid adheres to the detection point and the detection point cannot be accurately detected, the detection point is A warning means for giving a warning that the detection point cannot be accurately detected due to liquid adhesion.

  In the detection apparatus according to the present invention, the first value is determined based on the surface tension of the liquid.

  The detection device according to the present invention is a detection device for detecting a detection point to which a conductive liquid may adhere. The detection device has a contact having conductivity, and the contact is in contact with the detection point. Then, when the detection means for detecting electrical continuity, the moving means for moving the detection means, and the detection of the detection point are started, the contact of the detection means moves in the first direction toward the detection point. When the continuity is detected by the detection means, a movement control means for controlling the movement means to move the contact of the detection means in a second direction opposite to the first direction. And the distance of the contact of the detection means moved by the movement means in the second direction, and the contact of the detection means moved by the movement means in the first direction. Measure the distance traveled The measuring means and whether or not the distance that the contact has moved in the second direction is equal to or greater than the first value, and the distance that the contact has moved in the first direction is the second Only when it is determined whether or not the distance that the contact has moved in the second direction is equal to or greater than the first value, the liquid adheres to the detection point and Since the detection point is not found only when it is determined that the detection point cannot be accurately detected and it is determined that the distance that the contact has moved in the first direction is equal to or greater than the second value, the detection point is not detected. If the determination means determines that the liquid adheres to the detection point and the detection point cannot be detected accurately, the liquid adheres to the detection point and the detection is detected. A warning that the point cannot be detected accurately A warning means for warning that the detection point cannot be detected because the detection point cannot be detected when the determination means cannot detect the detection point because the detection point cannot be detected. It is a thing.

  Since the present invention is configured as described above, it is possible to detect that the detection point cannot be accurately detected when the conductive liquid adheres to the detection point. It is what you play.

FIG. 1A is an explanatory view showing a sensing pin moving toward a detection point, and FIG. 1B is a view taken in the direction of arrow I in FIG. FIG. 1C is an explanatory view showing the sensing pin in contact with the detection point, and FIG. 1D is a view taken along the arrow II in FIG. 1C, and FIG. These are explanatory drawings which show the state immediately before the sensing pin which moves away from a detection point leaves | separates from a detection point, and FIG.1 (f) is a III arrow directional view of FIG.1 (e). FIG. 2A is an explanatory diagram illustrating a state where the sensing pin moves toward a detection point in a state where the liquid is attached, and FIG. 2B illustrates a state where the sensing pin is in contact with the liquid. FIG. 2C is an explanatory diagram, and FIG. 2C is an explanatory diagram showing a state in which the sensing pin moves away from the detection point without touching the detection point. FIG. It is explanatory drawing which shows the state which the pin moved over the fixed distance in the direction away from a detection point. FIG. 3 is an explanatory diagram of a block configuration of the detection apparatus according to the present invention. FIG. 4 is an explanatory diagram showing a path along which the contact located at the detection start point moves. FIG. 5 is a flowchart showing the detailed processing contents of the detection processing. FIG. 6A is an explanatory view showing a state in which the contact has moved to the detection start point, and FIG. 6B is an explanatory view showing the contact moving in the first direction. FIG. 6C is an explanatory view showing a state where the contact is in contact with the detection point, and FIG. 6D is an explanatory view showing the contact moving in the second direction.

Hereinafter, an example of an embodiment of a detection method and a detection device according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 3 is a block diagram illustrating the configuration of the detection apparatus according to the present invention.

The detection device 10 includes a sensor 12 that contacts a detection point to detect electrical continuity, a moving member 14 that moves the sensor 12, a movement control unit 16 that controls movement of the moving member 14, and a moving member 16. A measuring unit 18 that measures the distance moved, a determination unit 20 that determines whether or not the detection point has been accurately detected, and a warning if the determination unit 20 determines that the detection point has not been accurately detected. And a warning unit 22 to be performed.

  More specifically, the sensor 12 includes a contact 12-1 having conductivity that comes into contact with a detection point, and when the contact 12-1 contacts a detection point set on a member formed of a metal material. , Detect electrical continuity.

For example, in the processing apparatus described in the background art section, the sensor 12 is provided in the main shaft portion, and the contact 12-1 corresponds to a sensing pin.

The moving member 14 is configured to be able to move the sensor 12 in a predetermined direction, and the moving direction, the moving speed, and the like are controlled by the movement control unit 16.

  The movement control unit 16 controls the movement of the moving member 14 so that the tip of the contact 12-1 of the sensor 12 moves on the perpendicular line of the plane where the detection point is located and the detection point is located. (Refer to FIG. 4).

  Further, when the detection of the detection point is started, the movement control member 16 controls the contact 12-1 of the sensor 12 to move to the detection start point that is a position for starting detection of the target detection point. To do. The detection start point is located on the perpendicular line, and is a position away from the detection point by a predetermined distance (specifically, a position where the distance from the detection point is less than a second value (described later)). And the distance from the detection point is a position larger than a first value (described later). Such detection start points are set for the respective detection points.

Further, the movement control member 16 moves the contact 12-1 of the sensor 12 from the detection start point in the first direction that is the direction toward the detection point, and the tip thereof moves in the first direction on the perpendicular. When continuity is detected by the sensor 12, the contact 12-1 of the sensor 12 is moved in a second direction that is a direction away from the detection point (that is, a direction opposite to the first direction). Then, the tip is controlled so as to move in the second direction on the perpendicular.

  Based on the movement of the moving member 14, the measuring unit 18 measures the distance that the contact 12-1 of the sensor 12 moves.

  That is, the measurement unit 18 measures the distance that the contact 12-1 of the sensor 12 has moved in the first direction from the detection start point based on the distance that the moving member 14 moves.

Moreover, the measurement part 18 measures the distance which the contact 12-1 of the sensor 12 moved to the 2nd direction from the position which detected conduction by the sensor 12, based on the distance which the moving member 14 moves.

  When the contact 12-1 of the sensor 12 moves beyond the second value (for example, 4 mm) in the first direction from the detection start point, the determination unit 20 cannot detect the detection point. Is not detected.

  The determination unit 20 detects when the contact 12-1 of the sensor 12 moves beyond the first value (for example, 1 mm) in the second direction from the position where the sensor 12 detects conduction. It is determined that the detection point cannot be accurately detected because the liquid adheres to the point.

  Note that the second value, which is a reference value for determining whether such a detection point has not been detected, and the first value, which is a reference value for determining whether or not the detection point has been accurately detected, are used. Are set in advance.

  The first value is a value that changes based on the surface tension of the conductive liquid, and is a value that is experimentally obtained, for example.

Furthermore, the first value is, for example, about 1 mm when the conductive liquid is water or a liquid having a surface tension similar to that of water.

  If the determination unit 20 determines that the detection point cannot be accurately detected because the liquid adheres to the detection point, the warning unit 22 accurately determines the detection point because the liquid adheres to the detection point. A warning is given to the effect that it could not be detected.

  Specifically, when a display device (not shown) is connected to the detection device 10, the detection point cannot be accurately detected because the liquid adheres to the detection device. A comment to the effect is displayed.

  In addition, when an LED lamp (not shown) is connected to the detection device 10, the LED lamp is turned on or flashes, and liquid is adhered on the detection point, so that the detection point is accurately set. You may make it notify that it was not able to be detected.

  Furthermore, when a speaker (not shown) is connected to the detection device 10, voice guidance that the detection point cannot be accurately detected because liquid has adhered to the detection point from the speaker. You may make it flow.

  Further, when the determination unit 20 determines that the detection point cannot be detected because the detection unit cannot find the detection point, the warning unit 22 warns that the detection point cannot be detected because the detection point cannot be detected. I do.

A specific warning method is the same as that in the case where a warning is given that the detection point cannot be accurately detected because the liquid adheres to the detection point.

  In the above configuration, a case where detection points are detected by the detection device 10 according to the present invention will be described in detail with reference to FIG.

FIG. 5 is a flowchart showing the detailed processing contents of the detection processing in the detection apparatus 10 according to the present invention.

  When the start of the detection process is instructed by the operator, the detection process is started in the detection device 10, and first, the contact 12-1 of the sensor 12 is moved to the detection start point of the detection point to be detected (step) S502).

That is, in the process of step S502, the sensor is moved via the moving member 14 by the movement control unit 16 so that the tip of the contact 12-1 of the sensor 12 is positioned at the detection start point of the preset detection point. 12 is moved (see FIG. 6A).

  Next, the contact 12-1 of the sensor 12 is moved in the first direction from the detection start point (step S504).

  That is, in the process of step S504, the movement control unit 16 moves the sensor 12 via the moving member 14, thereby moving the contact 12-1 positioned at the detection start point to a predetermined speed, for example, a moving speed 1 It moves in the first direction (that is, the direction toward the detection point) at 0.0 mm / sec (refer to FIG. 6B).

When the contact 12-1 starts moving in the first direction from the detection start point, the measurement unit 16 measures the movement distance of the contact 12-1 moving in the first direction from the detection start point. To start.

Thus, when the contact 12-1 is moved in the first direction, it is determined whether or not continuity is detected by the sensor 12 (step S506).

  In the determination process of step S506, if it is determined that the sensor 12 does not detect continuity, next, the contact 12-1 of the sensor 12 has moved by a second value (for example, 4 mm) or more. Is determined (step S508).

  That is, in the determination process of step S508, the moving distance of the contact 12-1 moving in the first direction measured by the measuring unit 16 in the determining unit 20 has reached the second value, that is, 4 mm. It will be judged whether or not.

If it is determined in step S508 that the distance that the contact 12-1 has moved has reached 4 mm, it is determined that the contact 12-1 of the sensor 12 has moved 4 mm or more, and the contact 12- If it is determined that the distance traveled by 1 has not reached 4 mm, it is determined that the contact 12-1 of the sensor 12 has not moved 4 mm or more.

  If it is determined in step S508 that the contact 12-1 of the sensor 12 has not moved by 4 mm or more, the process returns to step S506, and the processes after step S506 are performed.

That is, after the contact 12-1 of the sensor 12 is moved in the first direction in the process of step S504, it is determined that the continuity is detected by the sensor 12 in the determination process of step S506. In the determination process of S508, the determination process of step S506 and step S508 is repeated until it is determined that the contact 12-1 of the sensor 12 has moved by 4 mm or more.

Further, in the determination process of step S508, if it is determined that the contact 12-1 of the sensor 12 has moved by 4 mm or more, it is determined that the detection point is not found, and the warning unit 22 does not find the detection point. Is issued (step S510), and the detection process is terminated.

  On the other hand, in the determination process of step S506, if it is determined that the continuity is detected by the sensor 12, the movement controller 16 stops the movement of the contact 12-1 of the sensor 12 in the first direction (step S512). .

  That is, in the process of step S512, when the determination unit 20 determines that the continuity is detected by the sensor 12, the movement of the contact 12-1 is stopped at the position where the continuity is detected by the sensor 12 (FIG. (See 6 (c)).

When the sensor 12 detects continuity, the measurement by the measuring unit 16 of the moving distance of the contact 12-1 moving in the first direction from the detection start point is ended.

  Thereafter, the movement control unit 16 moves the contact 12-1 in a second direction (that is, detected at a moving speed of 0.1 mm / sec) at a speed slower than the predetermined speed from the position where the sensor 12 detects conduction. In the direction away from the point) (see step S514, FIG. 6D).

  The moving speed that moves in the second direction is not limited to 0.1 mm / sec, and may be the same as the moving speed that moves in the first direction, or may be faster or slower. . Note that the detection accuracy of the detection points can be expected to improve as the moving speed of moving in the second direction decreases.

Further, when the contact 12-1 starts to move in the second direction from the position where the sensor 12 detects conduction, the measuring unit 16 moves from the position where the sensor 12 detects conduction in the second direction. Measurement of the movement distance of the contact 12-1 is started.

Then, when the movement of the contact 12-1 in the second direction is started, it is determined whether or not continuity is no longer detected by the sensor 12 (step S516).

  In the determination process of step S516, when it is determined that the continuity is not detected by the sensor 12, that is, the continuity is still detected by the sensor 12, the contact 12-1 of the sensor 12 has the first value. (For example, it is 1 mm.) It is determined whether or not it has been moved (step S518).

  That is, in the determination process of step S518, in the determination unit 20, the movement distance of the contact 12-1 moving in the second direction measured by the measurement unit 16 has reached the first value, that is, 1 mm. It will be judged whether or not.

If it is determined in step S518 that the distance traveled by the contact 12-1 has reached 1 mm, it is determined that the contact 12-1 of the sensor 12 has moved by 1 mm or more, and the contact 12- If it is determined that the distance traveled by 1 has not reached 1 mm, it is determined that the contact 12-1 of the sensor 12 has not moved by 1 mm or more.

  If it is determined in step S518 that the contact 12-1 of the sensor 12 has not moved by 1 mm or more, the process returns to step S516, and the processes in and after step S516 are performed.

That is, after the contact 12-1 of the sensor 12 is moved in the second direction in the process of step S514, it is determined in the determination process of step S516 that the continuity is not detected by the sensor 12, or In the determination process of step S518, the determination process of step S516 and step S518 is repeated until it is determined that the contact 12-1 of the sensor 12 has moved by 1 mm or more.

If it is determined in the determination process in step S518 that the contact 12-1 of the sensor 12 has moved by 1 mm or more, it is determined that the detection point cannot be accurately detected because liquid has adhered to the detection point. The warning unit 22 issues a warning that the detection point cannot be accurately detected because the liquid adheres to the detection point (step S520), and the detection process ends.

  On the other hand, in the determination process of step S516, if it is determined that the continuity is not detected by the sensor 12, the movement control unit 16 stops the movement of the contact 12-1 of the sensor 12 in the second direction (step S522). ).

  That is, in the process of step S522, when the determination unit 20 determines that the continuity is no longer detected by the sensor 12, the movement of the contact 12-1 is stopped at a position where the continuity is no longer detected by the sensor 12.

When the sensor 12 no longer detects continuity, the measurement by the measuring unit 16 of the moving distance of the contact 12-1 from the position where the sensor 12 detects continuity in the second direction ends.

Thereafter, the coordinate value of the position where the sensor 12 no longer detects continuity is acquired, the acquired coordinate value is acquired as the coordinate value of the detection point (step S524), and this detection process is terminated.

  As described above, when detecting the predetermined detection point, the detection apparatus 10 according to the present invention first moves the contact 12-1 of the sensor 12 in the first direction, which is the direction toward the detection point. When the sensor 12 detects continuity, the movement of the contact 12-1 in the first direction is stopped.

Thereafter, the contact 12-1 is moved in the second direction from the stopped position, and if the sensor 12 still detects continuity even if the contact 12-1 moves more than the first value, Since it is determined that the detection point cannot be accurately detected because the liquid adheres to it, a warning is given based on the determination result. Further, when the sensor 12 no longer detects conduction at a position where the moving distance of the contact 12-1 does not exceed the first value, the coordinate value at that position is acquired as the coordinate value of the detection point. The first value is a value set based on the surface tension of the conductive liquid that may adhere to the surface of the detection point.

Thereby, in the detection apparatus 10 according to the present invention, the operator can easily confirm whether or not the detection point has been accurately detected, and when the detection point cannot be accurately detected. It can be easily determined that the liquid is attached on the detection point.

  The embodiment described above may be modified as shown in the following (1) to (3).

  (1) In the above-described embodiment, in the process of step S520, the warning unit 22 issues a warning that the detection point cannot be accurately detected because the liquid adheres to the detection point. However, it is needless to say that the present invention is not limited to this, and together with such a warning, the operator may be prompted to wipe off the liquid adhering to the detection point.

  (2) In the above-described embodiment, when it is determined in the determination process in step S518 that the contact 12-1 has moved by 1 mm or more, the detection point is accurately detected because the liquid adheres to the detection point. Although it was determined that it was not possible, a warning based on this determination result was issued by the warning 22, but it is needless to say that the present invention is not limited thereto.

  That is, if it is determined in the determination process in step S518 that the contact 12-1 has moved by 1 mm or more, it is determined that the liquid has adhered on the detection point, and the warning unit 22 has adhered the liquid on the detection point. You may make it alert | report that it is doing.

  (3) You may make it combine the above-mentioned embodiment and the modification shown in above-mentioned (1) thru | or (2) suitably.

  The present invention is suitable for use in a detection device that detects a detection point where a liquid may adhere.

  DESCRIPTION OF SYMBOLS 10 Detection apparatus, 12 Sensor, 12-1 Contact, 14 Moving member, 16 Movement control part, 18 Measurement part, 20 Judgment part, 22 Warning part

Claims (8)

A detecting means for detecting electrical continuity when the contact has contact with a detection point;
In a detection method for detecting a detection point where a conductive liquid may adhere by a detection device having a moving means for moving the detection means,
When the detection of the detection point is started, the detection unit is configured such that the tip of the contact of the detection unit passes through the detection point and moves on a perpendicular line of the plane where the detection point is located. the contactor was moved at a first traveling speed in a first direction toward the detection point, the conduction is detected by the detection means, the first direction and opposite said contact of said sensing means A movement control step for controlling movement of the moving means so as to move in a second direction of the direction at a second movement speed that is slower than the first movement speed ;
A measuring step of measuring a distance that the contact of the detecting means moved by the moving means has moved in the second direction;
It is determined whether the distance that the contact has moved in the second direction is equal to or greater than a first value, and the distance that the contact has moved in the second direction is equal to or greater than the first value. Only when it is determined that the detection point has become, the detection device performs the determination step of determining that the detection point cannot be accurately detected due to the liquid adhering to the detection point. The detection method according to claim 1, further comprising:
If it is determined in the determination step that the liquid adheres to the detection point and the detection point cannot be detected accurately, a warning that the liquid adheres to the detection point and the detection point cannot be detected accurately is issued. And a warning step to be performed by the detection device. The detection method according to any one of claims 1 and 2,
The detection method according to claim 1, wherein the first value is determined based on a surface tension of the liquid. A detecting means for detecting electrical continuity when the contact has contact with a detection point;
In a detection method for detecting a detection point where a conductive liquid may adhere by a detection device having a moving means for moving the detection means,
When the detection of the detection point is started, the detection unit is configured such that the tip of the contact of the detection unit passes through the detection point and moves on a perpendicular line of the plane where the detection point is located. the contactor was moved at a first traveling speed in a first direction toward the detection point, the conduction is detected by the detection means, the first direction and opposite said contact of said sensing means A movement control step for controlling movement of the moving means so as to move in a second direction of the direction at a second movement speed that is slower than the first movement speed ;
The distance of the contact of the detecting means moved by the moving means moved in the second direction, and the contact of the detecting means moved by the moving means moved in the first direction. A measurement process for measuring distance;
It is determined whether the distance that the contact has moved in the second direction is equal to or greater than a first value, and the distance that the contact has moved in the first direction is equal to or greater than a second value. Only when it is determined that the distance that the contact has moved in the second direction is equal to or greater than the first value, the liquid adheres to the detection point and the detection point is detected. It is determined that the detection point cannot be detected because the detection point cannot be found only when it is determined that the distance that the contact has moved in the first direction is greater than or equal to the second value. And when the liquid adheres to the detection point and the detection point cannot be accurately detected in the determination step, the liquid adheres to the detection point and the detection point is accurately detected. A warning that it is not possible, and When it is determined that the detection point cannot be detected because the detection point cannot be found, the detection device performs a warning step of warning that the detection point cannot be detected because the detection point cannot be found. A detection method characterized by the above. In a detection device for detecting a detection point where a conductive liquid may adhere,
A detecting means for detecting electrical continuity when the contact has contact with a detection point;
Moving means for moving the detecting means;
When the detection of the detection point is started, the detection unit is configured such that the tip of the contact of the detection unit passes through the detection point and moves on a perpendicular line of the plane where the detection point is located. the contactor was moved at a first traveling speed in a first direction toward the detection point, the conduction is detected by the detection means, the first direction and opposite said contact of said sensing means Movement control means for controlling the moving means so as to move in a second direction of the direction at a second movement speed that is slower than the first movement speed ;
Measuring means for measuring the distance that the contact of the detecting means moved by the moving means has moved in the second direction;
It is determined whether the distance that the contact has moved in the second direction is equal to or greater than a first value, and the distance that the contact has moved in the second direction is equal to or greater than the first value. And a determination unit that determines that the detection point cannot be accurately detected because the liquid adheres to the detection point only when it is determined that the detection point has become. The detection device according to claim 5, further comprising:
If it is determined by the determination means that the liquid adheres to the detection point and the detection point cannot be accurately detected, a warning that the liquid adheres to the detection point and the detection point cannot be detected accurately is issued. And a warning device for performing detection. The detection device according to any one of claims 5 and 6,
The first value is determined based on a surface tension of the liquid. In a detection device for detecting a detection point where a conductive liquid may adhere,
A detecting means for detecting electrical continuity when the contact has contact with a detection point;
Moving means for moving the detecting means;
When the detection of the detection point is started, the detection unit is configured such that the tip of the contact of the detection unit passes through the detection point and moves on a perpendicular line of the plane where the detection point is located. the contactor was moved at a first traveling speed in a first direction toward the detection point, the conduction is detected by the detection means, the first direction and opposite said contact of said sensing means Movement control means for controlling the moving means so as to move in a second direction of the direction at a second movement speed that is slower than the first movement speed ;
The distance of the contact of the detecting means moved by the moving means moved in the second direction, and the contact of the detecting means moved by the moving means moved in the first direction. A measuring means for measuring the distance;
It is determined whether the distance that the contact has moved in the second direction is equal to or greater than a first value, and the distance that the contact has moved in the first direction is equal to or greater than a second value. Only when it is determined that the distance that the contact has moved in the second direction is equal to or greater than the first value, the liquid adheres to the detection point and the detection point is accurately determined. Since the detection point is not found only when it is determined that the distance that the contact has moved in the first direction is greater than or equal to the second value, the detection point cannot be detected. A judging means for judging;
If it is determined by the determination means that the liquid adheres to the detection point and the detection point cannot be accurately detected, a warning that the liquid adheres to the detection point and the detection point cannot be detected accurately is issued. And a warning means for giving a warning that the detection point cannot be detected because the detection point cannot be detected when it is determined that the detection point cannot be detected because the detection point is not found by the determination means. A detection device characterized by that.

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