JP2019034573A - Determination device and method for the same - Google Patents

Abstract

To provide a new technology to determine facts and causes of abnormal switch action happened to an electric switch machine driven by an induction motor.SOLUTION: An electric switch machine 100 carries out a switching of a turnout 190 by converting rotation output of an induction motor 102 into linear movement through a switch gear group 110. A determination device 200 determines an abnormality in the switching of the electric switch machine 100 based on a rotation amount of any gear of the switch gear group that is detected by a sensor 180 provided to the gear. In other words, based on data detected by the sensor related to a series of switch actions, a speed/acceleration curve, which is a change in a gear rotating speed/rotating acceleration relative to a stroke position corresponding to a gear rotation amount, is generated. For each action step constituting a switching action, a part of a speed/acceleration curve corresponding to the action step is checked if the partial curve satisfies subscribed abnormal conditions for an assumed abnormal factor. Depending on the check result, the presence/absence of an abnormality and causes of the abnormality are determined.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a determination device for determining an abnormality related to an electric switch.

  In railways, it is desired to quickly detect an abnormality related to the switching operation of an electric switch that switches a branching device in order to realize safe transportation. For example, Patent Document 1 discloses a technique for determining an abnormality in a conversion operation based on a load torque obtained from a motor current of a servo motor for an electric switch using a servo motor as a drive source. Yes.

JP 2009-83577 A

  Since the servo motor performs constant rotation speed control that makes the rotation speed constant by controlling the motor current, the load torque can be obtained from the motor current. However, at present, the accuracy of the analysis of the load torque based on the motor current of the servo motor is not sufficient.

  By the way, as an electric switch, other than the servo motor, those using an induction motor are well known. However, the conversion abnormality determination technique as described in Patent Document 1 cannot be applied to an electric switch using this induction motor.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a new technique that can determine an abnormality in the switching operation of an electric switch using an induction motor and its factor. It is to be.

The first invention for solving the above-described problems is
A determination device for determining an abnormality related to an electric switch that performs a conversion operation by converting a rotation output of an induction motor into a linear motion through a conversion gear group,
Acquisition means for acquiring detection data for detecting a rotation amount of any gear of the conversion gear group and / or a movement amount related to the linear motion (hereinafter collectively referred to as “displacement amount”);
Based on the detection data, the speed and / or acceleration of the displacement amount (hereinafter collectively referred to as “displacement speed, etc.”) is calculated, and a series of time series changes such as the displacement speed related to the series of the conversion operations, Generating means for generating an anti-stroke curve associated with the displacement amount related to the conversion operation;
The curve portion corresponding to each operation process is specified by dividing the anti-stroke curve into each period based on the displacement amount corresponding to each operation process of the electric turning machine constituting the series of the conversion operations. Specific means,
Determining means for determining whether or not there is an abnormality by determining whether or not a predetermined abnormality condition defined for each of the identified curve portions is satisfied;
It is the determination apparatus provided with.

As another invention,
It is a determination method for determining an abnormality related to an electric switch that performs a conversion operation by converting a rotation output of an induction motor into a linear motion through a conversion gear group,
An acquisition step of acquiring detection data for detecting a rotation amount of any gear of the conversion gear group and / or a movement amount related to the linear motion (hereinafter collectively referred to as “displacement amount”);
Based on the detection data, the speed and / or acceleration of the displacement amount (hereinafter collectively referred to as “displacement speed, etc.”) is calculated, and a series of time series changes such as the displacement speed related to the series of the conversion operations, A generating step for generating a curve against stroke corresponding to the displacement amount related to the conversion operation;
The curve portion corresponding to each operation process is specified by dividing the anti-stroke curve into each period based on the displacement amount corresponding to each operation process of the electric turning machine constituting the series of the conversion operations. Specific steps,
A determination step of determining whether or not there is an abnormality by determining whether or not a predetermined abnormality condition defined for each of the identified curve portions is satisfied;
A determination method including the above may be configured.

  It is possible to determine an abnormality related to the conversion operation of the electric switch using an induction motor as a drive source. The rotation output of the induction motor is converted into a linear motion via a conversion gear group, and a conversion operation is performed. For this reason, the period corresponding to each operation process of the electric turning machine constituting a series of conversion operations from the rotation amount of any gear of the conversion gear group and / or the displacement amount which is the movement amount related to the linear motion. Can be defined. On the other hand, the displacement speed or the like of the displacement amount changes according to the load torque, for example. Therefore, according to the first invention and the like, a pair stroke curve is generated, and the pair stroke curve is divided into curve portions for each period corresponding to each operation process of the electric rotary machine. As a result, for each operation process, it is possible to grasp a change in displacement speed or the like with respect to the displacement amount as a curved portion, and it is possible to determine whether there is an abnormality. That is, it is possible to determine an abnormality related to the conversion operation of the electric switch.

The second invention is the determination device of the first invention,
The determination means determines an abnormality factor depending on which of the curve portions satisfies the abnormality condition.
It is a determination device.

  According to the second invention, the abnormality factor can be determined when there is an abnormality. That is, there are various abnormal factors of the conversion operation, such as foreign object pinching, member wear, and change in contact force, but the curve portion where the abnormality appears varies depending on the abnormal factor. For this reason, an abnormality factor can be determined depending on which curve portion satisfies the abnormality condition. Note that the abnormality factor determination mentioned here includes the narrowing down of abnormality factors.

The third invention is the determination device of the first or second invention,
The generating means calculates the displacement amount speed and acceleration as the displacement speed and the like, and the two types of pairs of the pair stroke curve concerning the displacement amount speed and the pair stroke curve concerning the displacement amount acceleration. Generate a stroke curve,
The determination means determines the presence or absence of abnormality using the two types of anti-stroke curves.
It is a determination device.

  According to the third aspect of the invention, since the speed and acceleration of the displacement amount differ depending on the abnormality factor, more various abnormality factors can be obtained by using two types of anti-stroke curves relating to the speed and acceleration of the displacement amount. Can be determined.

A fourth invention is a determination device according to any one of the first to third inventions,
Storage means for storing the anti-stroke curve generated by the generating means in association with a time series;
With
The determination means includes time-series determination means for determining the presence or absence of abnormality based on the time-series anti-stroke curve.
It is a determination device.

  According to the fourth invention, based on a plurality of time-series curves against the stroke, it is possible to prevent erroneous determination and improve abnormality determination accuracy, and to determine a sign or progress of an abnormality factor. Become.

5th invention is the determination apparatus of 4th invention, Comprising:
The time series determination means determines whether or not there is an abnormality for a predetermined curve portion of the curve portions corresponding to each operation process.
It is a determination device.

  According to the fifth invention, in determining the abnormality based on the time-series anti-stroke curve, the efficiency and accuracy are improved by determining whether there is an abnormality in the curve portion corresponding to the operation process corresponding to the assumed abnormality factor. Improved determination is possible.

6th invention is the determination apparatus of 5th invention, Comprising:
The time-series determination unit determines that there is an abnormality when a time-series cumulative value of a period that satisfies a predetermined abnormality prediction criterion among the predetermined curve portion satisfies a predetermined condition.
It is a determination device.

  According to the sixth invention, it is possible to determine an abnormality based on a time-series cumulative value during a period in which an abnormality sign is seen in the displacement speed or the like.

The figure for demonstrating the transmission and determination apparatus of the force between each principal part of an electric switch. The internal block diagram of an electric switch. An example of a velocity / acceleration curve. An example of a speed / acceleration curve when an increase in conversion load occurs. An example of a speed / acceleration curve when over-adhesion occurs. An example of a speed / acceleration curve when close contact or mechanism wear occurs. An example of a speed / acceleration curve when the motor voltage rises. An example of a speed / acceleration curve when a motor voltage drop occurs. An example of a speed / acceleration curve when a foreign object is generated. An example of a speed / acceleration curve when a foreign object is generated. An example of a speed determination reference table. An example of an acceleration determination reference table. An example of a velocity curved surface. An example of an acceleration curved surface. An example of a constant velocity diagram. An example of an isoacceleration diagram. An example of a constant velocity diagram when a conversion load increase occurs. The functional block diagram of a determination apparatus. An example of 1st determination result data. An example of a constant velocity line criterion table. An example of a uniform acceleration line determination reference table. An example of 2nd determination result data. The flowchart of an abnormality determination process.

[overall structure]
FIG. 1 is a diagram for explaining a force transmission and determination device between main parts constituting the electric switch 100.

  The electric switch 100 has an induction motor 102, a clutch 104, a conversion gear group 110, and an operation lever 130 as main components. In the electric switch 100, the rotation output of the induction motor 102 is transmitted to the conversion gear group 110 by the clutch 104, and converted into a torque suitable for driving the conversion mechanism by the conversion gear group 110, and the operation by the conversion mechanism is performed. A series of conversion operations are performed on the branching device 190, such as the Tongrel being converted and moved by the linear motion of the can 130 to cause the branching device 190 to move to a fixed / inverted position and to attach the Tongler to the basic rail.

  The conversion gear group 110 is provided with a sensor 180 that detects a rotation amount of a gear included in the conversion gear group 110 as a displacement amount. Further, in place of the sensor 180 or in combination with the sensor 180, a sensor 182 for detecting the amount of movement of the operation lever 130 that performs the linear motion can be provided. However, in the following description, it is assumed that only the sensor 180 is provided. The determination device 200 determines the presence / absence of an abnormality related to the electric switch 100 and the cause of the abnormality based on the detection data of the sensor 180.

  FIG. 2 is a top view showing main internal mechanisms of the electric switch 100. As shown in FIG. 2, the conversion gear group 110 includes a pinion gear 112 attached to the drive shaft 103 of the induction motor 102, a bevel gear 114 meshing with the pinion gear 112, and a first reduction gear provided on the rotation shaft of the bevel gear 114. 116 and a plurality of gears (gears) including an intermediate gear 118 that meshes with 116 and a conversion gear 122 that is a final gear meshed with a second reduction gear 120 provided on the rotation shaft of the intermediate gear 118.

  The sensor 180 is attached to any gear of the conversion gear group 110 and detects the amount of rotation. For example, the sensor 180 is attached to a pinion gear 112 that is a gear on the induction motor 102 side, and detects a tooth of a gear that has passed without contact as a rotation amount and outputs a pulsed detection waveform. A rotation that is attached to a rotation detector or a conversion gear 122 that is the final gear and outputs a saw-shaped detection waveform by detecting the rotation angle as a rotation amount in a range of 0 to 360 degrees (0 to 2π) without contact. It can be realized by an angle detector. Of course, the type of sensor 180 and the gear to be attached are not limited to this, and the rotational angular velocity detector may be attached to the pinion gear 112 or another gear, or the optical or magnetic rotation detector may be attached to the conversion gear 122 or the like. You may attach to another gear.

[Judgment principle]
A description will be given of the principle of determination of the presence / absence of abnormality of the electric switch 100 and the cause of abnormality based on the detection data of the sensor 180 by the determination device 200. The induction motor 102 is a single-phase induction motor, and its rotation speed changes according to the load torque, and each gear of the conversion gear group 110 rotates at a speed according to the rotation speed of the induction motor 102. That is, since there is a correlation between the load torque and the rotation speed of the gear, an abnormality related to the conversion operation of the electric switch 100 is determined based on the rotation speed of the gear. Further, since the rotation amount of the gear becomes a linear motion and is linked to the conversion movement amount of the Tongrel, each operation process related to the conversion operation can be determined from the rotation amount of the gear.

(A) Speed / Acceleration Curve First, as shown in FIG. 3, based on the detection data of the sensor 180 when the electric switch 100 performs a series of conversion operations, the speed of the rotation amount of the gear, And as a time series change concerning a series of change operation of each acceleration, two kinds of anti-stroke curves matched with the amount of rotation of the gear concerning the series of change operation are generated. That is, a speed curve that is a stroke curve with respect to the speed of the rotation amount of the gear (that is, the rotation speed; hereinafter simply referred to as “speed”) and the acceleration of the rotation amount of the gear (that is, rotation acceleration; hereinafter, simply “acceleration”). And an acceleration curve that is an anti-stroke curve. Here, the rotation amount of the gear corresponds to the displacement amount, and the speed and acceleration of the rotation amount correspond to the displacement speed and the like. When the sensor 182 is employed instead of the sensor 180, the movement amount of the motion can 130 corresponds to the displacement amount, and the movement speed and movement acceleration of the motion can 130 correspond to the displacement speed or the like. Hereinafter, the speed curve and the acceleration curve are collectively referred to as a “speed / acceleration curve”.

  FIG. 3A shows a speed curve, and FIG. 3B shows an acceleration curve. The speed on the vertical axis of the speed curve and the acceleration on the vertical axis of the acceleration curve are the rotational speed and rotational acceleration of the gear to which the sensor 180 is attached, respectively. When the sensor 180 is a rotation angle detector, the detection data is rotation angle data with respect to time, and therefore the rotation speed of the gear can be obtained by time differentiation processing on the detection data. Furthermore, the rotational acceleration of a gear can be calculated | required by performing the time differentiation process with respect to the calculated | required rotational speed. If the sensor 180 is a rotation detector, the number of pulses of detection data is counted and converted into the rotation angle of the gear, so that the rotation speed and the rotation acceleration of the gear can be calculated in the same manner as in the rotation angle detector. Can be sought.

  Further, since the horizontal axis of the speed curve and the acceleration curve corresponds to the rotation amount of the gear, which is the displacement amount, it can be referred to as the stroke amount of the operation lever 130, that is, the stroke position. When the sensor 180 is a rotation detector, the stroke position is calculated based on the number of pulses equal to the number of gear teeth, and when the sensor 180 is a rotation angle detector, the stroke position is converted based on the rotation angle. it can.

(B) Identification of operation process Next, for each of the velocity curve and the acceleration curve, a curve portion corresponding to a plurality of operation processes of the electric switch 100 constituting a series of conversion operations is specified. Specifically, the series of conversion operations includes a plurality of operation steps including an acceleration process, an unlocking process, a conversion process, an adhesion process, a locking process, and an inertia process. The acceleration process is a period from the start of the rotation operation of the induction motor 102, which is the start time of a series of conversion operations, until the rotation output sufficient for driving the conversion mechanism and the locking mechanism is reached. The unlocking process is a period for unlocking the locking mechanism 140. The conversion process is a period in which the conversion mechanism drives the operating can 130 to convert the Tongleil until it contacts the basic rail. The close contact process is a period in which the conversion mechanism drives the operation lever 130 to close the tip of the Tongrel to the basic rail. The locking process is a period until the locking mechanism 140 is locked and the operation of the induction motor 102 is stopped. The inertial process is a period after the operation of the induction motor 102 is stopped, and is a period in which each gear of the conversion gear group 110 rotates (decelerates) while decelerating due to the inertial force of the induction motor 102. The inertia process is a period until the end of the mechanism in which the idle gears of the conversion gear group 110 abut against a predetermined member inside the mechanism and the rotation stops. This mechanism end is the end point of a series of conversion operations.

  Since the speed curve and the acceleration curve have a horizontal axis as a stroke position, and are a series of conversion operations with respect to the same electric switch 100 and the gears to be detected by the sensor 180 are the same, The length of each operation process period (stroke period length) in the velocity curve and the acceleration curve is constant. That is, the stroke period length of each operation process can be determined in advance by defining the relationship between the actual conversion operation and the rotation amount of the gear. Since the stroke period length of each operation process is fixedly determined, each operation process in the speed curve and the acceleration curve is all required if the start point or end point of at least one operation process or the boundary of adjacent operation processes can be determined. In other words, the stroke position can be determined. For example, it is possible to identify a mechanism end point at which both speed and acceleration are zero, and to determine each operation process based on this point.

(C) Features of velocity / acceleration curve due to abnormality factor As knowledge for realizing the present embodiment, an abnormality related to the electric switch 100 (for example, an abnormality of the electric switch 100 itself, a branching device to be operated) In the case of occurrence of 190 abnormality), it has been found that the speed curve and the acceleration curve for the conversion operation are characterized by the operation process corresponding to the abnormality factor. For each of such a plurality of abnormal factors, the operation process and the characteristics of the speed curve and the acceleration curve will be described.

  In the present embodiment, assumed abnormal factors are increased conversion load, over-adhesion, small adhesion, wear of the mechanism, motor voltage increase, motor voltage decrease, and foreign matter.

  4 to 10 are diagrams illustrating a speed curve and an acceleration curve obtained by causing the electric switch 100 to perform a conversion operation in a state where an abnormal factor is artificially generated. is there. In each figure, a speed curve is shown on the upper side and an acceleration curve is shown on the lower side. For comparison, a normal speed curve and an acceleration curve in which no abnormality occurs are also shown by thin lines.

(A) Increase in conversion load FIG. 4 is a diagram illustrating a speed curve and an acceleration curve for a conversion operation of the electric switch 100 when an increase in the conversion load occurs. In the branching device 190, the tongrel is converted and moved so as to slide on the floor board. However, due to an increase in frictional force between the tongrel and the floor board, the load when moving the tongrel increases. That is, as shown in FIG. 4, in the conversion step, the speed decreases compared to the normal time, and the acceleration greatly varies with the decrease in the speed. This reduction in speed appears throughout the conversion process. It should be noted that in other operation processes, no remarkable features due to the oil drainage of the floor board appear.

(B) Over-adhesion FIG. 5 is a diagram illustrating a speed curve and an acceleration curve related to the conversion operation of the electric switch 100 when over-adhesion occurs. When locking the operation canister, the Tongrel is pressed with a predetermined force to bring the tip of the Tongrel into close contact with the basic rail, but if the contact force is excessive, the frictional force between the conversion gear and the operation canister Will increase. That is, as shown in FIG. 5, in the contact process, the speed temporarily decreases as compared with the normal time, and the acceleration greatly varies as the speed decreases. Furthermore, when the next conversion operation is performed continuously from an overlocked and locked state, the frictional force between the conversion gear and the operation lever has increased, so a greater force than normal is required. And the load increases. That is, as shown in FIG. 5, in the unlocking process, the speed decreases as compared with the normal time, and the acceleration fluctuates as the speed decreases.

(C) Small adhesion or mechanical part wear FIG. 6 is a diagram showing a speed curve and an acceleration curve for the switching operation of the electric switch 100 when small adhesion or mechanical part wear occurs. Contrary to over-adhesion, if the adhesive force during locking is insufficient, the load during conversion is reduced. Further, since the frictional force between the conversion gear and the operation lever is weak and the load is small, the gear easily rotates idly after the induction motor 102 is stopped. That is, as shown in FIG. 6, in the contact process, the fluctuation in acceleration is reduced, and the inertial process and the speed at the end of the mechanism are higher than in normal operation. Also, if a mechanism such as a jaw pin that holds the connection part between the lock and the connection stick is worn out, this connection part will loosen, and the driving force of the lock mechanism during the lock will decrease, reducing the load at the time of conversion. As a result, the situation is similar to that of small contact.

(D) Motor voltage rise FIG. 7 is a diagram showing a speed / acceleration curve for the conversion operation of the electric switch 100 when the motor voltage rises. When the operating voltage of the induction motor 102 increases, the rotation speed is likely to increase. That is, since the rotation speed of the gear is in accordance with the rotation speed of the induction motor 102, the acceleration is higher in the acceleration process than in the normal time as shown in FIG.

(E) Motor voltage drop FIG. 8: is a figure which shows the speed and acceleration curve concerning the conversion operation | movement of the electric switch 100 when a motor voltage fall arises. Contrary to the increase in the motor voltage, when the operating voltage of the induction motor 102 decreases, the rotation speed hardly increases. That is, as shown in FIG. 8, in the acceleration process, the acceleration is lower than that in the normal state.

(F) Foreign Object FIGS. 9 and 10 are diagrams showing speed / acceleration curves for the conversion operation of the electric switch 100 when a foreign object is generated. When foreign objects such as pebbles are interposed between the tong rail and the basic rail, the load at the time of conversion increases by preventing the conversion of the Tongrel. Depending on the size and location of the foreign object, the transition of the Tongleil may be a movement while pushing the foreign object, the foreign object sandwiched between the Tongleil and the basic rail may be crushed, or the foreign object may not be crushed. Various situations may occur, such as the conversion operation being stopped while being sandwiched between the rails, or the conversion being stopped when the Tongrel contacts a foreign object. That is, as shown in FIGS. 9 and 10, in the conversion process, the adhesion process, and the locking process, the speed decreases as compared with the normal time, and the acceleration varies according to the decrease in the speed.

  More specifically, as shown in FIG. 9, when the intervening foreign matter is relatively small, the moving Tonglel pushes the foreign matter as it is and is sandwiched between the basic rails, or the foreign matter is crushed. It is locked in the state of interposing. That is, in the contact process (more specifically, the initial part of the contact process in which a foreign object contacts the basic rail), the speed temporarily decreases as compared with the normal time, and the acceleration decreases with the decrease in the speed. Fluctuates greatly.

  Also, as shown in FIG. 10, when the foreign matter present is relatively large, the movement of the Tongleil stops when the foreign matter comes into contact, and the conversion operation is interrupted. That is, in the conversion step (more specifically, when the tunglele comes into contact with the foreign matter), the speed rapidly decreases to zero, and the acceleration greatly varies with the change in the speed.

  As described above, since the operation process in which the characteristic appears in the speed / acceleration curve due to the abnormality factor is different for each of the abnormality factors described above, in this embodiment, the characteristic that appears in the speed / acceleration curve in each operation process. By determining whether or not there is an abnormality in the electric switch 100, and if there is an abnormality, the cause of the abnormality is determined. The determination of the abnormality factor mentioned here includes the meaning of narrowing down the abnormality factor. Moreover, the following two types are performed as the determination method.

(D) First determination First, in the first determination, a speed / acceleration curve for a series of conversion operations to be determined is compared with a reference curve for each operation step, thereby determining whether there is an abnormality. Determine the cause. The reference curve is a speed / acceleration curve based on detection data obtained when the electric switch 100 in a normal state performs a series of conversion operations. This reference curve may be a curve for one conversion operation, or may be an average of curves for each of a plurality of conversion operations. Of course, the reference curve (speed reference curve and acceleration reference curve) specifies a curve portion corresponding to each operation process.

  As described above, the operation process in which the characteristic appears in the speed / acceleration curve and the characteristic vary depending on the abnormality factor that has occurred. FIG. 11 and FIG. 12 are determination tables that define correspondence relationships between abnormal factors, operation processes whose characteristics are caused by the abnormal factors, and abnormal conditions for determining abnormalities due to the abnormal factors. is there. FIG. 11 is a determination table (speed determination reference table 252) for the speed curve, and FIG. 12 is a determination table (acceleration determination reference table 254) for the acceleration curve. In accordance with this determination table, for each operation process, a predetermined index value based on the speed / acceleration curve corresponding to the operation process and the partial curve values (speed and acceleration values) of the reference curve is obtained, and this index value Based on the above, it is determined whether an abnormal factor corresponding to the operation process has occurred.

  Specifically, according to FIG. 11, the abnormality factor can be determined as follows by comparing the speed curve to be determined with the speed reference curve corresponding to the normal time. That is, for the unlocking process, the value of the speed curve (hereinafter referred to as “detected value”) is smaller than the value of the speed reference curve (hereinafter referred to as “reference value”), and the maximum value of the speed difference as the index value is equal to or greater than the threshold value. It is possible to determine over-adhesion as an abnormal factor. The maximum speed difference value is the maximum value of the speed difference (absolute value) between the reference value and the detected value at each stroke position in the corresponding operation process. As shown in FIG. 5, when over-adhesion occurs, the speed decreases in the unlocking process as compared with the normal time, so this “speed reduction” is determined based on the maximum speed difference value. The threshold value can be set according to the assumed degree of speed reduction.

  Regarding the conversion step, it is possible to determine that the conversion load increase is an abnormal condition, with the speed difference integrated value, which is an index value, being equal to or greater than a threshold value as an abnormal condition. The speed difference integrated value is a value obtained by integrating the speed difference (absolute value) between the reference value and the detected value in the corresponding operation process over the entire period of the operation process. As shown in FIG. 4, when the conversion load increases, the state in which the speed is reduced compared to the normal state continues in the conversion process. Judgment by. The threshold value can be set according to the assumed degree of speed reduction and the stroke period length of the conversion process.

  Regarding the contact process, it is possible to determine over-adhesion as an abnormal condition by setting the detected value to be smaller than the reference value and the maximum value of the speed difference as an index value being equal to or greater than a threshold value. As shown in FIG. 5, when over-adhesion occurs, the speed temporarily decreases compared with the normal time in the contact process, so this “large decrease in speed” is determined based on the maximum speed value. . The threshold value can be set according to the assumed degree of speed reduction.

  For the inertial process, the detection value is larger than the reference value, and the maximum value of the speed difference that is the index value is not less than a threshold value, and as a cause of abnormality, small adhesion or mechanical part wear can be determined. it can. As shown in FIG. 6, when the contact is small or the mechanism portion wears, the speed increases in the inertial process as compared with the normal time. Therefore, this “increase in speed” is determined based on the maximum speed difference. . The threshold value can be set according to the assumed increase in speed. Even at the end of the mechanism, which is the end of the inertial process, it is possible to determine small adhesion or wear of the mechanism part as an abnormal factor by the same abnormal condition.

  Furthermore, in the conversion process, the adhesion process, and the locking process, a foreign object can be determined as an abnormal factor on the condition that the speed has become zero. In addition, it is possible to determine the size of a foreign substance that is a cause of abnormality depending on which operation step the speed is zero.

  Moreover, according to FIG. 12, the abnormality factor can be determined as follows by comparing the acceleration curve to be determined with the acceleration reference curve corresponding to the normal time. That is, for the acceleration process, the acceleration curve value (hereinafter referred to as “detected value”) is larger than the acceleration reference curve value (hereinafter referred to as “reference value”), and the maximum acceleration difference value that is an index value is the threshold value. Taking the above as an abnormal condition, an increase in motor voltage can be determined. In addition, it is possible to determine the motor voltage drop based on the abnormal condition that the detected value is smaller than the reference value and the acceleration difference maximum value is greater than or equal to the threshold value. The maximum acceleration difference value is the maximum value of the acceleration difference (absolute value) between the reference value and the detected value at each stroke position in the corresponding operation process. As shown in FIG. 7, when the motor voltage rises, the acceleration increases in the acceleration process as compared with the normal time. When the motor voltage drops as shown in FIG. In the process, the acceleration is lower than that in the normal state. Therefore, this “acceleration increase” or “acceleration decrease” is determined based on the maximum acceleration difference value. The threshold value can be set according to the assumed degree of speed reduction.

  Regarding the unlocking step, it is possible to determine over-adhesion as an abnormal condition by setting the acceleration fluctuation amount as an index value to be equal to or greater than a threshold value. The acceleration fluctuation amount is an acceleration difference between the maximum value and the minimum value of the detected value at each stroke position in the corresponding operation process. As shown in FIG. 5, when over-adhesion occurs, the acceleration fluctuates in the unlocking process as compared with the normal time, so this “acceleration fluctuation” is determined based on the acceleration fluctuation amount. The threshold value can be set according to the assumed acceleration fluctuation.

  Regarding the conversion step, it is possible to determine that the conversion load increase is an abnormal condition, with the acceleration fluctuation amount being greater than or equal to a threshold value. As shown in FIG. 4, when the conversion load increases, the acceleration fluctuates greatly in the conversion process as compared with the normal time. Therefore, the “acceleration fluctuation” is determined based on the acceleration fluctuation amount. The threshold value can be set according to the assumed acceleration fluctuation amount.

  With respect to the close contact process, it is possible to determine over-adhesion as an abnormal condition by setting the acceleration fluctuation amount to be equal to or greater than a threshold value. Further, when the acceleration fluctuation amount is equal to or less than the threshold value, it is possible to determine whether the contact is small or the mechanism portion wear is an abnormal factor. As shown in FIG. 5, when over-adhesion occurs, the acceleration fluctuates greatly compared to the normal time in the adhering step. Therefore, the “acceleration fluctuation” is determined based on the acceleration fluctuation amount. In addition, as shown in FIG. 6, when the contact is small or the mechanism portion wears, the change in acceleration is smaller in the contact process than in the normal state. Judge by amount. These threshold values can be set in accordance with the assumed acceleration fluctuation amount.

  Furthermore, in the conversion process, the adhesion process, and the locking process, it is possible to determine that the amount of acceleration fluctuation is equal to or greater than a threshold value as an abnormal condition and to determine a foreign object as an abnormal factor. As shown in FIGS. 9 and 10, when a foreign object is generated, the acceleration is such that the conversion operation of the electric switch 100 suddenly decelerates or stops suddenly in the conversion process, the contact process, or the locking process. Since a large fluctuation occurs, this “acceleration fluctuation” is determined based on the acceleration fluctuation amount. Since the fluctuation in acceleration due to this foreign matter is larger than the fluctuation in acceleration due to an increase in conversion load or over-adhesion, setting the threshold appropriately will determine whether the abnormal cause is a foreign matter, an increase in conversion load, or an excessive load. It is possible to determine whether it is in close contact. In addition, it is possible to determine the size of the foreign substance depending on whether the acceleration greatly fluctuates in any of the operation steps of the conversion step, the contact step, and the locking step.

  Thus, for each of the speed curve and the acceleration curve, it is possible to determine the presence or absence of an abnormality and an abnormality factor when there is an abnormality. Further, the determination result for each of the speed curve and the acceleration curve By combining these, it is possible to make a comprehensive determination. For example, when an increase in the conversion load occurs as an abnormal factor, characteristics resulting from the increase in the conversion load appear in both the speed curve and acceleration curve conversion steps. For such an abnormal factor, when the same abnormal factor is determined for the velocity curve and the acceleration curve, the abnormal factor is determined.

(E) Second Determination In the second determination, the presence / absence of an abnormality in the electric switch 100 and an abnormality factor are determined based on a plurality of time-series speed / acceleration curves. Specifically, a velocity curved surface in which a number of velocity / acceleration curves (velocity curves and acceleration curves) for the electric switch 100 to be determined are arranged in time series in a three-dimensional coordinate space, and an acceleration curved surface (Hereinafter collectively referred to as “velocity / acceleration curved surface”).

  FIG. 13 is an example of a velocity curved surface, and FIG. 14 is an example of an acceleration curved surface. In any case, the horizontal axis represents the stroke position, the vertical axis represents the speed or acceleration, and the depth direction represents the time-series order. That is, the speed / acceleration curves obtained by performing the conversion operation in the state where some abnormality has occurred for the same electric switch 100 are arranged in the depth direction. Specifically, from the rear side to the front side, each cause of abnormal factors such as increased conversion load, normal, foreign matter, close contact, excessive contact, mechanism wear, motor voltage drop, motor voltage rise In this case, there are multiple velocity / acceleration curves. According to this speed / acceleration curved surface, the characteristics of changes in speed and acceleration due to abnormal factors appear as changes in the time-series direction.

  After generating the velocity / acceleration curved surface, then, for this velocity / acceleration curved surface, an isovelocity diagram corresponding to a so-called contour diagram in which the positions of the three-dimensional coordinate space where the velocity or acceleration is the same is connected by a line, and An isoacceleration diagram (hereinafter collectively referred to as “constant velocity / acceleration diagram”) is generated. 15 is an example of a constant velocity diagram for the velocity curved surface of FIG. 13, and FIG. 16 is an example of a constant acceleration diagram for the acceleration curved surface of FIG. 15 and 16, the horizontal axis represents the stroke position, and the vertical axis represents the trial number corresponding to the time-series direction.

  If there is no abnormality in the electric switch 100, the speed / acceleration curve obtained when the conversion operation is performed is almost the same regardless of the execution timing. The constant acceleration lines appear as parallel lines almost along the time series direction. However, if any abnormality occurs in the electric switch 100, the speed and acceleration change due to this abnormality. Therefore, in the constant velocity / acceleration diagram, the constant velocity line and the constant acceleration line are in the stroke position direction. Or a new constant velocity line or a constant acceleration line appears.

  By utilizing this fact, in the second determination, the speed / acceleration curve related to the conversion operation performed so far for the electric switch 100 of a certain determination target is accumulated and stored, and the conversion operation is performed for each operation process. Of the time-series speed / acceleration curve according to the execution date and time, the presence / absence of abnormality and the cause of abnormality are determined based on the curve portion corresponding to the operation process. Specifically, for each operation process, a constant velocity / acceleration diagram based on the curve portion of the time-series velocity / acceleration curve corresponding to the operation process is generated, and the constant velocity line in the constant velocity / acceleration diagram or The presence / absence of an abnormality and an abnormality factor are determined depending on whether the constant acceleration line satisfies an abnormality condition defined in the operation process.

  FIG. 17A is an example showing an outline of a constant velocity diagram in the case where an increase in the conversion load occurs in the electric switch 100. FIG. In FIG. 17A, the horizontal axis represents the stroke position, and the vertical axis represents the time (time-series direction) at which the time advances from the upper side to the lower side in the past. As shown in FIG. 4, for example, when floor board oil runs out as a cause of the conversion load increase, characteristics of change appear in speed and acceleration in the conversion process. Therefore, in FIG. Only the constant velocity lines are shown, and the constant velocity lines are omitted for the other operation steps. Moreover, the equal velocity lines of the two velocities V1 and V2 are shown as the equal velocity lines. The speeds V1 and V2 that are equal speed lines are lower than the speed V in the conversion process when the electric switch 100 is normal, and V1> V2.

  And in Fig.17 (a), at the oldest time t0 which started the detection, the electric switch 100 was normal, the conversion load did not increase yet, and it occurred on the way with the passage of time. The constant velocity diagram based on the speed curve in each time in the case where the oil shortage of the floor board gradually progresses and reaches the latest time tn is shown. That is, paying attention to the conversion process, the speed decreases due to the progress of the oil drainage of the floor board with time, and at the time ta when the speed becomes equal to or lower than the speed V1, the constant velocity line of the speed V1 appears, and the speed further decreases to the speed V2. A constant velocity line of the speed V2 appears at the time tb when the time becomes below.

  In such an isovelocity / acceleration diagram, an isovelocity line with a predetermined threshold speed or an isoacceleration line with a threshold acceleration (hereinafter collectively referred to as “threshold isovelocity / acceleration line”) is used for each operation process. An abnormal condition is that the area of the enclosed region is equal to or greater than a threshold value, and it is determined that there is an abnormality due to an abnormality factor corresponding to the operation process. Specifically, as shown in FIG. 17B, for each of the speed / acceleration curves forming the speed / acceleration curved surface, the speed / acceleration is a predetermined threshold speed or threshold acceleration (in FIG. V1 or velocity V2 is equivalent) An abnormal prediction period that is a period in the stroke position direction that satisfies an abnormal prediction standard that is equal to or less than or equal to or below is obtained, and a time-series cumulative value obtained by integrating the abnormal prediction periods in the time series direction is obtained. This time-series cumulative value corresponds to the area surrounded by the above-mentioned threshold constant velocity / acceleration line.

  At this time, the threshold constant velocity / acceleration and the time-series cumulative value threshold that are abnormal conditions can be set according to an assumed abnormal factor. A plurality of threshold values can be set for one abnormality factor in a certain operation process. That is, in FIG. 17A, constant velocity lines of two types of speeds V1 and V2 are shown in the conversion process, but the area (constant speed line) of a region surrounded by the constant speed lines of the respective speeds V1 and V2. A threshold value may be set for each (area), and abnormality may be determined step by step.

  In the case of an abnormality that progresses gradually, such as an increase in conversion load, the speed in the conversion process gradually decreases with time as a feature that appears in the speed / acceleration curve. That is, in the constant velocity / acceleration diagram, the abnormal prediction period gradually increases with time, and the time-series cumulative value (that is, the area surrounded by the constant velocity line) increases. In the second determination, the change in speed with the passage of time is determined as a sign of abnormality.

  As shown in FIG. 17A, an annular constant velocity line may appear when a detection error or a temporary abnormality occurs but is resolved immediately, the area in this case is “ Because it is “small”, it is not determined to be abnormal.

  In addition to the increase in conversion load, the abnormal factor that can be determined by the second determination is that the speed or acceleration is temporarily changed (increased / decreased) due to the abnormality in a specific operation process, and in the constant velocity / acceleration diagram. An abnormal factor that causes a new uniform velocity / acceleration line, for example, over-adhesion (see FIG. 5) can be determined.

  In the present embodiment, the criterion for determining the abnormality in the second determination is the area surrounded by the constant velocity line and the constant acceleration line in the constant velocity / acceleration diagram. For example, in the acceleration step and the inertia step, An interval between two types of speed lines or acceleration lines as seen may be used as a criterion for abnormality determination.

[Function configuration]
FIG. 18 is a functional configuration diagram of the determination device 200. As illustrated in FIG. 18, the determination apparatus 200 includes a manipulation input unit 202, a display unit 204, a sound output unit 206, a communication unit 208, a processing unit 210, and a storage unit 230. System.

  The operation input unit 202 is realized by an input device such as an operation button, a switch, or a touch panel, for example, and outputs an operation signal corresponding to the performed operation to the processing unit 210. The display unit 204 is realized by a display device such as a liquid crystal display or a display lamp, and performs various displays based on display signals from the processing unit 210. The sound output unit 206 is realized by a sound output device such as a speaker, for example, and performs various sound outputs based on the sound signal from the processing unit 210. The communication unit 208 is realized by a wired or wireless communication device, and performs wired communication or wireless communication with an external device.

  The processing unit 210 includes an arithmetic device such as a CPU (Central Processing Unit), for example, and performs various arithmetic processing based on programs, data, and the like stored in the storage unit 230 to control the determination device 200 as a whole. Do. In the present embodiment, the processing unit 210 includes a detection data acquisition unit 212, a speed / acceleration curve generation unit 214, an operation process identification unit 216, and an abnormality determination unit 220, and an abnormality according to the abnormality determination program 232. A determination process (see FIG. 23) is performed.

  The detection data acquisition unit 212 corresponds to an acquisition unit, and acquires detection data obtained by detecting the rotation amount (displacement amount) of any gear of the conversion gear group 110 of the electric turning machine 100. That is, the electric switch 100 performs a series of conversion operations from the sensor 180 attached to any gear of the conversion gear group 110 of the electric switch 100 to be determined via the communication unit 208. The amount of rotation of the gear at the time of performing is acquired as detection data relating to the series of conversion operations.

  For example, the detection data may be acquired from the sensor 180 in real time during the conversion operation of the electric switch 100, or the detection data is accumulated and stored in the sensor, and the conversion operation ends. It is also possible to collect the detection data related to the switching operation once or a plurality of times at a time every time or at the time of performing the maintenance inspection. The acquired detection data is stored and stored in the conversion data 248 in association with the execution date and time of the conversion operation.

  The speed / acceleration curve generation unit 214 corresponds to generation means, calculates a rotation amount (displacement amount) speed and / or acceleration (displacement speed, etc.) based on detection data, and a displacement speed applied to a series of conversion operations. As a time-series change such as, a stroke curve corresponding to a rotation amount related to a series of conversion operations is generated. In addition, two types of stroke curves are generated as a pair stroke curve: a pair stroke curve related to the rotation amount speed and a pair stroke curve related to the rotation amount acceleration.

  That is, based on the detection data related to the series of conversion operations acquired by the detection data acquisition unit 212, the speed of the rotation amount with respect to the stroke position corresponding to the rotation amount of the gear (as the two types of anti-stroke curves related to the speed and acceleration) ( A speed curve of (rotational acceleration) and an acceleration curve of the acceleration (rotational acceleration) of the rotation amount with respect to the stroke position are generated. The generated velocity curve and acceleration curve are stored in the conversion data 248 in association with the detection data based on them.

  The operation process specifying unit 216 corresponds to specifying means, and separates the anti-stroke curve for each period based on the rotation amount corresponding to each operation process of the electric switch 100 constituting a series of conversion operations. The curve portion corresponding to the operation process is specified. That is, in the case of the same electric switch 100, the stroke period length of each operation process is constant regardless of the execution timing of the conversion operation. For example, the mechanism end point at which the speed becomes zero is specified, By specifying the boundary of each operation process retroactively from the end of the mechanism, the period corresponding to each operation process and the curve portion of the speed / acceleration curve can be specified.

  The abnormality determination unit 220 corresponds to a determination unit, and determines whether or not there is an abnormality by determining whether or not a predetermined abnormality condition defined for each identified curve portion is satisfied. Also, the abnormality factor is determined depending on which curve portion satisfies the abnormality condition. Moreover, the presence or absence of abnormality is determined using two types of anti-stroke curves.

  That is, for each operation process, it is determined whether the curve portion of the speed / acceleration curve corresponding to the operation process satisfies the abnormal condition. An abnormality factor is determined according to the operation process that satisfies the condition. In addition, the abnormality determination unit 220 includes a first determination unit 222 and a second determination unit 224.

  The first determination unit 222 performs abnormality determination based on the first determination described above. Specifically, for example, every time a series of conversion operations by the electric turning machine 100 is performed and new detection data is obtained, the electric power is calculated based on the speed / acceleration curve based on the detection data and the reference curve. The presence / absence of an abnormality in the switch 100 and the cause of the abnormality are determined. In other words, the curve portion of the speed / acceleration curve corresponding to each operation step indicates an abnormal condition determined by the speed determination reference table 252 shown as an example in FIG. 11 or the acceleration determination reference table 254 shown as an example in FIG. Judge whether to meet. If it is determined that the abnormal condition is satisfied in any of the operation processes, it is determined that there is an abnormality, and the abnormality factor associated with the operation process determined to satisfy the abnormal condition is determined.

  The result of determination by the first determination unit 222 is stored as first determination result data 270. FIG. 19 is an example of the first determination result data 270. As shown in FIG. 19, the first determination result data 270 is generated every time the first determination is made. Each of the first determination result data 270 is based on the speed curve and the acceleration curve as the determination criteria for each operation process in association with the execution time of the series of conversion operations that are the targets of the first determination. Stores judgment results. The determination result is the presence / absence of an abnormality and an abnormality factor when there is an abnormality.

  The second determination unit 224 performs abnormality determination based on the second determination described above. The second determination unit 224 corresponds to time series determination means, and determines the presence or absence of abnormality based on a time series versus stroke curve. Moreover, the presence or absence of abnormality is determined about the predetermined curve part of the curve parts corresponding to each operation | movement process. Further, it is determined that there is an abnormality when a time-series accumulated value in a predetermined curve portion that satisfies a predetermined abnormality prediction criterion satisfies a predetermined condition.

  Specifically, for example, each time a series of conversion operations by the electric switch 100 is performed and new detection data is acquired, the speed / acceleration curve based on the detection data is obtained up to the present time. Based on the time-series speed / acceleration curve based on the execution date and time of the conversion operation, the presence / absence of an abnormality in the electric switch 100 and the cause of the abnormality are determined. That is, it is determined whether the time-series curve portion of the speed / acceleration curve corresponding to each operation process satisfies the abnormal condition defined in the constant velocity line determination reference table 262 or the constant acceleration line determination reference table 264. If it is determined that the abnormal condition is satisfied in any of the operation processes, it is determined that there is an abnormality, and the abnormality factor associated with the operation process determined to satisfy the abnormal condition is determined.

  FIG. 20 is an example of the constant velocity line determination reference table 262. As shown in FIG. 20, the constant velocity line determination criterion table 262 includes an abnormality factor, an operation process in which a feature appears due to the abnormality factor, an abnormality condition for determining an abnormality due to the abnormality factor, Is defined. According to the constant velocity line criterion table 262 shown in FIG. 20, over-adhesion can be determined as an abnormal factor in the unlocking process and the close-in process, and an increase in conversion load is determined as an abnormal factor in the conversion process. be able to.

  In FIG. 20, “the constant velocity line area of the velocity V” means the area of the region surrounded by the constant velocity line of the velocity V in the corresponding operation process of the constant velocity diagram. It is obtained as a value obtained by integrating the abnormal prediction period satisfying the abnormal prediction standard that is V or higher or below in the time series direction.

  FIG. 21 is an example of the uniform acceleration line determination reference table 264. As shown in FIG. 21, the uniform acceleration line determination reference table 264 includes an abnormality factor, an operation process in which a characteristic appears due to the abnormality factor, an abnormality condition for determining an abnormality due to the abnormality factor, Is defined. According to the uniform acceleration line determination reference table 264 shown in FIG. 21, it is possible to determine a motor voltage increase as an abnormality factor in the acceleration process, and to determine over-adhesion as an abnormality factor in the unlocking process and the adhesion process. The conversion load increase can be determined as an abnormal factor in the conversion process.

  The determination result by the second determination unit 224 is accumulated and stored as second determination result data 272. FIG. 22 is an example of the second determination result data 272. As shown in FIG. 22, the second determination result data 272 is generated every time the second determination is made. Each second determination result data 272 is based on the speed curve and the acceleration curve as the determination criteria for each operation step in association with the execution time of the series of conversion operations that are the targets of the second determination. Stores judgment results. The determination result is the presence / absence of an abnormality and an abnormality factor when there is an abnormality.

  The storage unit 230 is realized by a storage device such as a ROM (Read Only Memory), a RAM (Random Access Memory), and a hard disk, for example, and stores a system program and data for the processing unit 210 to control the determination device 200 in an integrated manner. In addition to being stored, it is used as a work area for the processing unit 210 and temporarily stores the results of computations executed by the processing unit 210. In the present embodiment, the storage unit 230 stores the abnormality determination program 232 and the switch data 240 regarding each of the electric switch 100 to be determined.

  The turning machine data 240 includes a turning machine ID 242 for identifying the corresponding electric turning machine 100, a speed reference curve 244, an acceleration reference curve 246, and conversion data 248 relating to each of the conversion operations performed so far. The first determination table 250 used by the first determination unit 222 for the first determination, the second determination table 260 used by the second determination unit for the second determination, and the first determination result Data 270 and second determination result data 272 are stored. The conversion data 248 includes an execution date and time of the corresponding conversion operation, detection data related to the conversion operation, a speed curve based on the detection data, and an acceleration curve. The first determination table 250 includes a speed determination reference table 252 and an acceleration determination reference table 254. The second determination table 260 includes a constant velocity line determination reference table 262 and a constant acceleration line determination reference table 264.

[Process flow]
FIG. 23 is a flowchart illustrating the flow of the determination process. This process is realized by the processing unit 210 executing the abnormality determination program 232. Further, it is executed for each conversion operation of the electric switch to be determined.

  First, the detection data acquisition unit 212 acquires detection data related to a series of conversion operations performed from the sensor 180 provided in the electric switch 100 (step S1). This step S1 is an acquisition step. Next, the speed / acceleration curve generation unit 214 generates a speed / acceleration curve (speed curve and acceleration curve) based on the acquired detection data (step S3). This step S3 is a generation step. The acquired detection data and the generated speed / acceleration curve are stored and stored as conversion data 248 in association with the execution date and time of the conversion operation. Subsequently, the operation process specifying unit 216 specifies a curve portion corresponding to each operation process for the generated speed / acceleration curve (step S5). This step S5 is a specific step.

  Thereafter, the first determination unit 222 determines whether or not there is an abnormality in the conversion operation of the electric switch 100 based on the corresponding curve portion for each operation process based on the generated speed / acceleration curve, and the abnormality factor. A first determination is made (step S7). Further, the second determination unit 224 is based on the time-series speed / acceleration curve obtained up to the present time including the generated speed-acceleration curve and based on the corresponding time-series curve portion for each operation process. Then, a second determination is made to determine whether there is an abnormality in the conversion operation of the electric switch 100 and the cause of the abnormality (step S9). These steps S7 and S9 are determination steps.

  Finally, the determination result is output (step S11). That is, the determination results such as the presence / absence of abnormality and the cause of abnormality obtained by the first determination and the second determination are displayed on the display unit 204, for example. By using AND or OR between the determination result of the first determination and the determination result of the second determination, the final presence / absence of abnormality and the cause of abnormality can be displayed and output. Not only that there is an abnormality, but also the degree of abnormality may be notified. When the above processing is performed, the abnormality determination processing ends.

[Function and effect]
As described above, according to the present embodiment, in the electric switch 100 using the induction motor 102 as a drive source, the sensor 180 provided on the gears of the conversion gear group 110 to which the rotation output of the induction motor 102 is transmitted. Based on the detected rotation amount of the gear, the determination device 200 can determine an abnormality in the conversion operation of the electric switch 100. That is, the determination device 200 generates a speed / acceleration curve that is a change in the rotation speed / rotation acceleration of the gear with respect to the stroke position corresponding to the rotation amount of the gear, based on the detection data of the sensor related to the series of conversion operations. Depending on whether or not the partial curve of the speed / acceleration curve corresponding to the operation process satisfies a predetermined abnormality condition corresponding to the assumed abnormality cause Determine the cause.

[Modification]
It should be noted that embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can of course be changed as appropriate without departing from the spirit of the present invention.

(A) Sensor In the above-described embodiment, the rotation amount of the gears of the conversion gear group 110 is adopted as the displacement amount, and this rotation amount is detected by the sensor 180. The amount may be detected as a displacement amount using the sensor 182 (see FIG. 1). As such a sensor, for example, there is a potentiometer that detects the amount of movement (distance) of the operation lever 130. Similarly, regarding the amount of movement related to the linear motion, the speed and acceleration can be obtained by differential processing, and the above-described abnormality determination can be performed.

(B) Abnormal factor As an abnormal factor that can be determined according to the present embodiment, not only the abnormal factor exemplified in FIG. 4 to FIG. The other abnormal factors such as can be determined in the same manner. An abnormality occurring in the electric switch 100 appears as a change in the curve portion in each operation process of the speed / acceleration curve. Therefore, even if a change other than the change defined in the above-described embodiment occurs, any abnormality occurs. Can be determined.

DESCRIPTION OF SYMBOLS 100 Electric turning machine 102 Induction motor, 104 Clutch, 110 Conversion gear group, 130 Operation can 180 Sensor 190 Branch device 200 Judgment device 202 Operation input part, 204 Display part, 206 Sound output part, 208 Communication part 210 Processing part 212 Detection data acquisition unit, 214 Speed / acceleration curve generation unit 216 Operation process specification unit 220 Abnormality determination unit, 222 First determination unit, 224 Second determination unit 230 Storage unit 232 Abnormality determination program 240 Switch data

Claims (7)

A determination device for determining an abnormality related to an electric switch that performs a conversion operation by converting a rotation output of an induction motor into a linear motion through a conversion gear group,
Acquisition means for acquiring detection data for detecting a rotation amount of any gear of the conversion gear group and / or a movement amount related to the linear motion (hereinafter collectively referred to as “displacement amount”);
Based on the detection data, the speed and / or acceleration of the displacement amount (hereinafter collectively referred to as “displacement speed, etc.”) is calculated, and a series of time series changes such as the displacement speed related to the series of the conversion operations, Generating means for generating an anti-stroke curve associated with the displacement amount related to the conversion operation;
The curve portion corresponding to each operation process is specified by dividing the anti-stroke curve into each period based on the displacement amount corresponding to each operation process of the electric turning machine constituting the series of the conversion operations. Specific means,
Determining means for determining whether or not there is an abnormality by determining whether or not a predetermined abnormality condition defined for each of the identified curve portions is satisfied;
The determination apparatus provided with. The determination means determines an abnormality factor depending on which of the curve portions satisfies the abnormality condition.
The determination apparatus according to claim 1. The generating means calculates the displacement amount speed and acceleration as the displacement speed and the like, and the two types of strokes are the anti-stroke curve related to the displacement amount speed and the anti-stroke curve related to the displacement amount acceleration. Generate a curve,
The determination means determines the presence or absence of abnormality using the two types of anti-stroke curves.
The determination apparatus according to claim 1 or 2. Storage means for storing the anti-stroke curve generated by the generating means in association with a time series;
With
The determination means includes time-series determination means for determining the presence or absence of abnormality based on the time-series anti-stroke curve.
The determination apparatus as described in any one of Claims 1-3. The time series determination means determines whether or not there is an abnormality for a predetermined curve portion of the curve portions corresponding to each operation process.
The determination apparatus according to claim 4. The time-series determination unit determines that there is an abnormality when a time-series cumulative value of a period that satisfies a predetermined abnormality prediction criterion among the predetermined curve portion satisfies a predetermined condition.
The determination apparatus according to claim 5. It is a determination method for determining an abnormality related to an electric switch that performs a conversion operation by converting a rotation output of an induction motor into a linear motion through a conversion gear group,
An acquisition step of acquiring detection data for detecting a rotation amount of any gear of the conversion gear group and / or a movement amount related to the linear motion (hereinafter collectively referred to as “displacement amount”);
Based on the detection data, the speed and / or acceleration of the displacement amount (hereinafter collectively referred to as “displacement speed, etc.”) is calculated, and a series of time series changes such as the displacement speed related to the series of the conversion operations, A generating step for generating a curve against stroke corresponding to the displacement amount related to the conversion operation;
The curve portion corresponding to each operation process is specified by dividing the anti-stroke curve into each period based on the displacement amount corresponding to each operation process of the electric turning machine constituting the series of the conversion operations. Specific steps,
A determination step of determining whether or not there is an abnormality by determining whether or not a predetermined abnormality condition defined for each of the identified curve portions is satisfied;
A determination method including

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