JP2011131882A - Electric switch machine and portable terminal, and conversion state management device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conversion state data collecting system capable of continuously monitoring the conversion state of a switch machine without placing a communication line. <P>SOLUTION: A conversion state measuring and storing device 20 is installed at a site where the switch machine 2 exists for executing measurement regarding the conversion state of the switch machine with respect to each conversion and accumulating and storing the data. Then, a maintenance personnel visits the site for the connection of a portable terminal 30 to copy the data accumulated and stored in the past on the portable terminal 30. The portable terminal 30 carried back from the site by the maintenance personnel is connected to a conversion state management device 40. Thus, the data stored in the portable terminal 30 are inputted to the conversion state management device 40 and accumulated and stored therein in addition to a previous one. The conversion state management device 40 displays the conversion state (motor torque etc.) of the switch machine in time series in accordance with the accumulated and stored data. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to an electric switch, a portable terminal, and a conversion state management device for switching a railway branching device.

  The switchboard functions to change the train path by switching the turnout in the railway. If it breaks down, it will interfere with the train operation and have a great social impact. Therefore, the load torque at the time of switching the turning machine and the deviation of the conversion completion position are measured and used for maintenance and inspection.

  For example, there is a load torque measuring device that measures a motor voltage and a motor current of a turning machine during a conversion operation, converts them into torque, and displays a dynamic load (for example, see Patent Document 1). .) The measurement by this measuring instrument is performed by a method in which a maintenance person who has gone to the site connects the measuring instrument to a predetermined terminal of the machine and notes the measurement result in a notebook.

  In such a measurement, only the fragmentary measurement results obtained when the maintenance staff went to the site can obtain the measurement results, but the measuring device is permanently installed in the instrument box at the site, and the motor current of the machine is changed at each changeover. There is also a monitoring system that continuously monitors the switching state of the turning machine by measuring such data and transmitting the data to a management device installed in the maintenance area through a communication cable (for example, patents) Reference 2).

JP 2000-168557 A Japanese Patent No. 2875857

  In the monitoring system as described above, continuous monitoring is possible. However, since there is often a distance of several kilometers from the installation location of the switchover machine to the management device in the maintenance area, each switchboard is In order to prepare a cable line, a large capital investment is required for laying the communication cable. For this reason, there was a problem that the place which can install the monitoring system of a falling machine was restricted.

The present invention is intended to solve the above-described problem. An electric switch and a portable terminal capable of continuously monitoring the switch state of the switch without laying a communication cable , the switch The object is to provide a state management device .

The gist of the present invention for achieving the object lies in the inventions of the following items.
[1] In an electric switch that converts a railway branching device,
The electric switch is provided with a conversion state measurement storage device that performs measurement on the conversion state of the branching device for each conversion,
The conversion state measurement storage device,
Motor voltage measuring means for measuring the driving voltage of the motor for each conversion of the electric switch;
Motor current measuring means for measuring the drive current of the motor for each change of the electric switch;
A / D conversion means for converting analog data output from the motor voltage measurement means and the motor current measurement means into digital data;
Storage means for accumulating and storing the digital data after the A / D conversion in time series,
Measurement control means for controlling the measurement operation of the motor;
Output control means for outputting digital data accumulated and stored in the storage means to the outside,
The measurement control unit attaches additional information to the A / D converted digital data and stores it in a storage unit.
An electrical tipping machine characterized by that.

[2] The additional information includes the switch number, the type of switch, the switch time, and the switch direction for each switch of the switch.
  The electrical switch as set forth in [1], wherein

[3] The A / D conversion unit calculates an effective value of data measured at a predetermined interval and stores it in the storage unit in time series
  The electrical switch as set forth in [1], wherein

[4] The storage means is a removable storage medium
  The electrical switch according to any one of [1] to [3].

[5] Data input means for inputting the digital data stored in the storage means of the conversion state measurement storage device provided in the electric switch according to [1];
  Data storage means for storing the digital data input by the data input means;
  Based on the digital data stored in the data storage means, the motor torque and the operation load relating to the switching state of the electric switch are converted, and display data in which the converted data is graphed in time series is created. Data processing means,
  Display means for displaying the display data;
  A portable terminal characterized by comprising:

[6] Data output means for outputting the digital data stored in the data storage means to the outside
  The mobile terminal according to [5], which is characterized in that

[7] Input means for inputting the stored digital data from the portable terminal according to [5] or [6],
  Data storage and storage means for storing and storing digital data input by the input means;
  Based on the digital data stored in the data storage and storage means, the motor torque and the operation load relating to the switching state of the electric switch are converted, and the converted data is graphed in time series to create display data Data processing means,
  Display means for displaying the display data;
A conversion state management device characterized by comprising:

[8] The apparatus further comprises reading means for reading the stored digital data from a removable recording medium removed from the conversion state measurement storage device of the electric switch according to [4],
  The digital data read by the reading means is accumulated and stored in the data accumulation and storage means.
  The conversion state management device according to [7], wherein

According to the electric switch and the portable terminal and the conversion state management device according to the present invention, the conversion state of the switch is automatically measured on the spot for each conversion, and the measurement result data is stored and stored. The data can be output to an external device such as a portable terminal, or the removable storage medium can be taken home, so a communication cable is laid between the on-site device and the conversion state management device installed in the maintenance area. Without change, it is possible to collect data on the conversion state and monitor the change of the state of the machine. In addition, when an inability to convert occurs, you can see the data at the time of the inability to convert and the previous conversion status, which is useful for cause analysis.

It is explanatory drawing which shows the system configuration | structure of the conversion state data collection system concerning the 1st Embodiment of this invention. It is a block diagram which shows the conversion state measurement storage device of the conversion state data collection system concerning the 1st Embodiment of this invention. It is a block diagram which shows the portable terminal of the conversion state data collection system concerning the 1st Embodiment of this invention. It is a block diagram which shows the conversion state management apparatus of the conversion state data collection system concerning the 1st Embodiment of this invention. It is explanatory drawing which shows an example of a conversion data display screen and a time series data display screen. It is explanatory drawing which shows the system configuration | structure of the conversion state data collection system concerning the 2nd Embodiment of this invention. It is a block diagram which shows the conversion state measurement storage device of the conversion state data collection system concerning the 2nd Embodiment of this invention. It is a block diagram which shows the conversion state management apparatus of the conversion state data collection system concerning the 1st Embodiment of this invention. It is explanatory drawing which shows the internal structure of a turning machine.

  Hereinafter, various embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a system configuration of a conversion state data collection system 10 according to the first embodiment. The conversion state data collection system 10 includes a conversion state measurement storage device 20 installed at a site, a portable terminal 30, and a conversion state management device 40 installed in a maintenance room management room or the like. Here, the conversion state measurement storage device 20 is built in the switching machine 2. The portable terminal 30 is configured as a terminal device that can be carried between the site and a maintenance room management room. The conversion state measurement storage device 20 may be externally attached to the switch machine 2 or may be installed in an instrument box near the switch machine 2.

  The switching machine 2 includes a motor 3 that serves as a drive source for the conversion operation. The conversion state measurement storage device 20 automatically performs measurement on the conversion state such as measurement of the motor voltage and motor current of the motor 3 and further, a lock deviation amount described later, and changes the data of the measurement result. It has a function to store and store in association with data such as machine number, type, date and time of conversion, and direction of conversion. Further, it has a function of outputting the stored and stored data to the portable terminal 30 when the portable terminal 30 is connected.

  The portable terminal 30 fulfills a function of storing data taken from the conversion state measurement storage device 20 at the site. In addition, it has a function of outputting stored data to the conversion state management device 40 when it is brought back from the site and connected to the conversion state management device 40.

  The conversion state management device 40 takes in data from the portable terminal 30, adds it to the previous data, accumulates and stores it, and based on the stored and stored data, shows information indicating the conversion state of the switch. It has a function to display it in time series as a graph.

  In this conversion state data collection system 10, maintenance personnel regularly come to the site to take in data stored and stored in the conversion state measurement storage device 20, take it back to the portable terminal 30, and continue for a long time regarding the conversion state. Data can be obtained and used for maintenance and inspection.

  In addition, a tipping machine and rods are installed around the turnout. During maintenance, inspection of the inside and outside of the switching machine, installation inspection, lock adjustment, lot inspection, adjustment, lubrication, etc. Is also performed. For this reason, periodic maintenance inspections are essential, and maintenance personnel regularly visit the site. Therefore, when maintenance personnel come to the site for maintenance inspection, the conversion state measurement storage device 20 copies the data stored and stored so far to the portable terminal 30 and collects it regularly. Data can be stored in the conversion state management device 40.

  FIG. 2 shows a configuration example of the conversion state measurement storage device 20 that measures the motor voltage and the motor current. The conversion state measurement storage device 20 includes a motor voltage measurement unit 21 that measures the drive voltage of the motor 3, a motor current measurement unit 22 that measures the drive current of the motor 3, and the motor voltage measurement unit 21 and the motor current measurement unit 22. A / D conversion unit 23 that converts analog data to be output into digital data, and a storage unit that stores and stores the converted data in time series in association with data such as the machine number, type, conversion date and time, and conversion direction 24, a measurement control unit 25 that controls a series of measurement operations, and an output control unit 26 that controls an output operation of data to the portable terminal 30.

  The motor voltage measurement unit 21, the motor current measurement unit 22, the A / D conversion unit 23, and the measurement control unit 25 serve as a measurement unit that performs measurement regarding the conversion state of the switch 2 for each conversion. The storage unit 24 functions as a storage unit that accumulates and stores measurement result data, and the output control unit 26 functions as an output unit that outputs the stored and stored data to the portable terminal 30.

  The measurement control unit 25 outputs a control signal 27 for each conversion, and a series of measurement operations are executed based on the control signal 27. Here, the motor controller 25 constantly monitors the motor current, starts the measurement operation when the motor current exceeds the threshold A, and terminates the measurement operation when the motor current falls below the threshold B, thereby realizing automatic measurement. ing. In consideration of the time when conversion is impossible, a time limit may be set until the measurement is finished.

  During the measurement operation, analog data output from the motor voltage measurement unit 21 and the motor current measurement unit 22 is converted into digital data by the A / D conversion unit 23. Here, the measurement of the motor voltage and the motor current is performed at intervals of 0.5 ms, and the effective values are calculated every 50 ms and stored in the storage unit 24 in time series, during the measurement operation. In this way, the data group stored during the measurement operation is added and stored with data such as the machine number, type, date and time of change, and change direction. It is desirable that the storage unit 24 has a storage capacity capable of accumulating and storing data for several months (preferably longer than the maximum maintenance inspection interval).

  FIG. 3 shows a configuration example of the mobile terminal 30. The portable terminal 30 includes a data storage unit 31 for storing data fetched from the conversion state measurement storage device 20, an input / output control unit 32 that controls data input / output operations for the data storage unit 31, and a data storage unit 31. Are provided with a data processing unit 33 that creates display data and the like from the data stored therein, a display unit 34, and an operation unit 35 that receives various operations from an operator.

  The input / output control unit 32 and the data processing unit 33 are configured by circuits having a CPU, a ROM, and a RAM as main parts. For the display unit 34, for example, a small liquid crystal display is used. The input / output control unit 32 functions as a data input unit for inputting the data stored and stored from the conversion state measurement storage device 20 and the data stored in the data storage unit 31 to the conversion state management device 40. It functions as a data output unit that outputs to

  When the mobile terminal 30 is connected to the conversion state measurement storage device 20 and a predetermined instruction is input from the operation unit 35, the input / output control unit 32 of the mobile terminal 30 reads out to the output control unit 26 of the conversion state measurement storage device 20. In response to the read command, the output control unit 26 reads out the data stored and stored in the storage unit 24 and outputs the data to the portable terminal 30. The input / output control unit 32 of the portable terminal 30 sequentially writes the data input from the conversion state measurement storage device 20 into the data storage unit 31. As a result, the data stored and stored in the storage unit 24 of the conversion state measurement storage device 20 is copied to the data storage unit 31 of the portable terminal 30. The data in the storage unit 24 may be automatically deleted after being copied to the portable terminal 30 or may be deleted in accordance with an erasing instruction from the operation unit 35.

  In addition, when a predetermined display operation is performed from the operation unit 35, display related to the conversion state is performed based on the data stored in the data storage unit 31. For example, the data processing unit 33 estimates and converts the motor torque and the operation load from the data indicating the motor voltage stored in the data storage unit 31 and the data indicating the motor current, and graphed in time series Is displayed on the display unit 34.

  If the motor voltage is constant, the motor torque is proportional to the square of the motor current. However, if the motor voltage varies, the torque varies accordingly. Therefore, the relationship between the motor current and torque is examined in advance for several types of motor voltages, a conversion table is prepared for each motor voltage, and an estimated value of torque is calculated using the conversion table corresponding to the actually measured motor voltage. It is configured. The estimated value is calculated using the estimated torque and the conversion formula for the load of the operation can. In addition, the motor voltage, the motor current, and the required time from the start to the end of conversion (conversion time) may be displayed.

  FIG. 4 shows the configuration of the conversion state management device 40. The conversion state management device 40 adds an input control unit 41 acting as an input means for performing control for inputting stored data from the mobile terminal 30 and data input from the mobile terminal 30 to previous data. A data storage unit 42 that stores and stores the data, a data processing unit 43 that creates display data and the like from the data stored in the data storage unit 42, a display unit 44, and an operation unit 45.

  The conversion state management device 40 may be configured by a computer device or the like. A liquid crystal display device or the like is used for the display unit 44. The data processing unit 43 and the display unit 44 realize a function as display means for displaying the switching state of the switch.

  When the portable terminal 30 is connected to the conversion state management device 40, a control signal is output from the input control unit 41 to the input / output control unit 32 of the portable terminal 30, and the input / output control unit of the portable terminal 30 is responded to this control signal. 32 reads out the data stored in the data storage unit 31 and outputs it to the conversion state management device 40. Data input from the portable terminal 30 is organized in time series for each switch number and is additionally stored in the data storage unit 42 of the conversion state management device 40. The data stored in the data storage unit 31 of the portable terminal 30 may be automatically deleted after being copied to the conversion state management device 40, or may be deleted based on the deletion instruction from the operation unit 35 or the like. Also good.

  The data stored and stored in the data processing unit 43 is displayed on the display unit 44 by performing a predetermined operation from the operation unit 45 when necessary. For example, motor voltage, motor current, conversion time (required time from conversion start to end), motor torque, operation load, etc. can be displayed in time series. The method for converting the motor torque and the operation load from the motor voltage / current is the same as in the case of the portable terminal 30, and a description thereof will be omitted.

  FIG. 5 shows an example of a data display screen related to the conversion state. A conversion data display screen 100 in FIG. 10A shows changes in the motor voltage 101 and the motor current 102, the hand-turning torque 103, and the conversion force 104 from the start to the end of one conversion operation. The horizontal axis is the elapsed time (seconds) from the start of the conversion operation. A similar screen can be displayed on the display unit 34 of the mobile terminal 30.

  The time-series data display screen 110 in FIG. 5B shows the daily changes in the maximum value 111, the minimum value 112, and the average value 113 of the hand torque in several conversion operations performed on one day. . The horizontal axis indicates the number of elapsed days (month and day). It is also possible to confirm a failure sign from such a display.

  In addition, the motor voltage and motor current when the conversion operation is executed with foreign matter intervening between the movable rail and the basic rail of the branching device and the conversion operation is executed are measured. If the load of the operation can be obtained, the torque margin and load allowance until the conversion is impossible can be understood by comparing this with the motor torque measured and estimated during normal conversion and the load of the operation can, so conversion is impossible Can be predicted in advance.

  Also, an alarm reference value is determined based on data measured when conversion is impossible or motor torque estimated and converted from this data, and the alarm reference value is converted together with other data to the conversion data display screen 100 or time-series data display screen 110. If it is displayed on the screen or an alarm is issued when the alarm reference value is exceeded, preventive maintenance will result.

  In this way, the conversion state measurement storage device 20 installed at the site automatically measures the conversion state of the turning machine for each conversion, stores and stores the data, and when maintenance personnel come to the site, Since the stored and stored data is taken into the portable terminal 30, and then the data is copied from the portable terminal 30 brought back by the maintenance staff to the conversion state management device 40, the on-site device and the conversion state management device 40 Even without laying a communication cable for connecting the data, it is possible to collect long-term data on the conversion state in the conversion state management device 40 and monitor the state change of the switch. That is, since no capital investment for laying communication cables is required, it is possible to deploy a monitoring system in a quiet area where the budget is limited. Further, it is possible to use such a method that the conversion state measurement storage device 20 is temporarily attached to a switch that is not in good condition, and data relating to the conversion operation during that time is collected to analyze the cause of the malfunction. In this case, the conversion state measurement storage device 20 itself may be brought home without using the portable terminal 30, and data may be copied from the conversion state measurement storage device 20 to the conversion state management device 40.

  Furthermore, since the measurement result related to the conversion state can be displayed on the portable terminal 30 at the site, for example, when the conversion is impossible, the data stored and stored in the conversion state measurement storage device 20 is taken into the portable terminal 30 so far. Thus, it is possible to display on the spot the conversion state before or when conversion is not possible, and use it to investigate the cause of conversion failure. In the conventional monitoring system such as Patent Document 2, it was not possible to see the data locally in this way.

  Next, a conversion state data collection system 10a according to the second embodiment will be described.

  FIG. 6 shows a system configuration of the conversion state data collection system 10a according to the second embodiment. In the second embodiment, a removable storage medium 61 is used instead of the portable terminal 30. In addition, the same code | symbol is attached | subjected to the part same as 1st Embodiment, and those description is abbreviate | omitted.

  FIG. 7 shows the configuration of the conversion state measurement storage device 20a in the conversion state data collection system 10a according to the second embodiment. As in FIG. 2, it is a configuration example in the case of measuring a motor voltage and a motor current. The storage unit 62 is a writing device that writes and stores data in a removable storage medium 61. As the storage medium 61, for example, a semiconductor memory card is used.

  FIG. 8 shows the configuration of the conversion state management device 40a in the conversion state data collection system 10a according to the second embodiment. A reading unit 63 is provided as reading means for reading data from the storage medium 61 in which data is accumulated and stored by the conversion state measurement storage device 20a. The data storage / storage unit 42 stores and stores data read from the storage medium 61 by the reading unit 63.

  In this system, the conversion state measurement storage device 20a installed at the site where the switch machine 2 is installed automatically measures the switch state of the switch machine for each conversion, and the measurement result data is attached to the removable storage medium 61. Store and store. When the maintenance staff comes to the site, the storage medium 61 in which the data measured so far is stored is removed from the conversion state measurement storage device 20a, and is taken home by replacing it with another storage medium. The conversion state management device 40a reads and accumulates data from the storage medium 61 brought back by the maintenance personnel, and displays the change state of the switch based on the accumulated and stored data.

  Thus, by using the storage medium 61, the portable terminal 30 becomes unnecessary and the cost required for installation can be further reduced.

  In the above example, the case where the motor voltage and the motor current are measured has been described, but a lock error or the like may be measured. FIG. 9 shows the internal structure of the turning machine 2. The switch 2 is driven by a motor 3 so that the operating can 4 moves horizontally in the longitudinal direction (in the direction of arrow C in the figure), and a branching device (not shown) connected to the tip of the operating can 4 is shown. The movable rail (Tongleil) is changed to a fixed position or an inverted position.

  At the conversion completion position, the tip of the movable rail must be in close contact with the basic rail, and this check is performed by fitting the lock can 5 and the lock piece 6 together. The tip of the lock can 5 is connected to the vicinity of the tip of the movable rail, and moves horizontally in the same direction as the operation can 4 together with the movable rail (arrow D in the figure). Further, the switch machine 2 is provided with a lock piece 6 which moves forward and backward perpendicularly and horizontally (arrow E in the figure) to the lock can 5 in accordance with the conversion operation. The lock piece 6 is retracted away from the lock can 5 during the conversion operation, and advances toward the lock can 5 at the end of the conversion. The lock lock 5 is provided with a notch 7 through which the lock piece 6 passes through at a predetermined position, and the lock piece 6 fits into the notch 7 of the lock lock 5 only when the movable rail change completion position is almost correct. In combination, the lock 5 is locked.

  Therefore, the displacement sensor 8 measures the relative position between the horizontal center of the notch 7 of the lock can 5 and the horizontal center of the lock piece 6 to be inserted at the end of conversion. It is possible to grasp whether it is out of place (the amount of lock madness). The conversion state measurement storage device 20 may measure and store the output value of the displacement sensor at the end of conversion for each conversion.

  In particular, by making it possible to display the amount of lock error on the mobile terminal 30, the amount of lock error can be confirmed on site, and if it is out of order, it can be used for adjustment. Incidentally, a handwheel handle insertion port 9 is provided near the center of the gear on the right side of the motor 3 in FIG. The hand turning torque corresponds to the torque when the hand turning handle is inserted and rotated.

  The embodiment of the present invention has been described with reference to the drawings. However, the specific configuration is not limited to that shown in the embodiment, and there are changes and additions within the scope of the present invention. Are also included in the present invention.

  In each embodiment, the start and end of the conversion operation are recognized and automatically measured by monitoring the motor current, but the start and end timings of the automatic measurement may be recognized by other methods. For example, if a conversion command signal input from the outside in order to instruct a conversion operation is used as a reference, it is possible to recognize from the data the situation that the motor is not rotating even though the conversion command signal is input. .

  In the embodiment, the motor voltage, the motor current, and the lock error are exemplified as the measurement items. However, other measurement items may be used as long as they are related to grasping the conversion state. Furthermore, the environment such as the temperature and humidity inside and outside the turning machine may be added to the measurement item.

DESCRIPTION OF SYMBOLS 2 ... Rolling machine 3 ... Motor 4 ... Operation lever 5 ... Locking lock 6 ... Lock piece 7 ... Notch 8 ... Displacement sensor 9 ... Hand-operated handle insertion port 10, 10a ... Conversion state data collection system 20, 20a ... Conversion State measurement storage device 21 ... Motor voltage measurement unit 22 ... Motor current measurement unit 23 ... A / D conversion unit 24 ... Storage unit 25 ... Measurement control unit 26 ... Output control unit 27 ... Control signal 30 ... Portable terminal 31 ... Data storage unit 32 ... I / O control unit 33 ... Data processing unit 34 ... Display unit 35 ... Operation unit 40, 40a ... Conversion state management device 41 ... Input control unit 42 ... Data storage / storage unit 43 ... Data processing unit 44 ... Display unit 45 ... Operation Unit 61 ... Storage medium 62 ... Storage unit 63 ... Reading unit 100 ... Conversion data display screen 101 ... Motor voltage 102 ... Motor current 103 ... Hand-torque torque 104 ... Conversion force 1 10 ... Time-series data display screen 111 ... Maximum value of hand-torque torque 112 ... Minimum value of hand-torque torque 113 ... Average value of hand-torque torque

Claims (8)

  In an electrical switch that converts a railway turnout,
  The electric switch is provided with a conversion state measurement storage device that performs measurement on the conversion state of the branching device for each conversion,
  The conversion state measurement storage device,
  Motor voltage measuring means for measuring the driving voltage of the motor for each conversion of the electric switch;
  Motor current measuring means for measuring the drive current of the motor for each change of the electric switch;
  A / D conversion means for converting analog data output from the motor voltage measurement means and the motor current measurement means into digital data;
  Storage means for accumulating and storing the digital data after the A / D conversion in time series,
  Measurement control means for controlling the measurement operation of the motor;
  Output control means for outputting digital data accumulated and stored in the storage means to the outside,
  The measurement control unit attaches additional information to the A / D converted digital data and stores it in a storage unit.
  An electrical tipping machine characterized by that.   The additional information includes the turning machine number, the type of the electric turning machine, the changing time and the changing direction for each change of the electric turning machine.
  The electric switch according to claim 1.   The A / D conversion unit calculates an effective value of data measured at a predetermined interval and stores it in a time series in the storage unit
  The electric switch according to claim 1. The storage means is a removable storage medium.
  The electric switch according to any one of claims 1 to 3, characterized in that:   Data input means for inputting the digital data stored in the storage means of the conversion state measurement storage device provided in the electric switch according to claim 1;
  Data storage means for storing the digital data input by the data input means;
  Based on the digital data stored in the data storage means, the motor torque and the operation load relating to the switching state of the electric switch are converted, and the converted data is graphed in time series to create display data Data processing means,
  Display means for displaying the display data;
  A portable terminal characterized by comprising:   Data output means for outputting the digital data stored in the data storage means to the outside is further provided.
  The mobile terminal according to claim 5.   Input means for inputting the stored digital data from the portable terminal according to claim 5 or 6,
  Data storage and storage means for storing and storing digital data input by the input means;
  Based on the digital data stored in the data storage and storage means, the motor torque and the operation load relating to the switching state of the electric switch are converted, and the converted data is graphed in time series to create display data Data processing means,
  Display means for displaying the display data;
A conversion state management device characterized by comprising:   Furthermore, it comprises reading means for reading the stored digital data from a removable recording medium removed from the conversion state measurement storage device of the electric switch according to claim 4,
  The digital data read by the reading means is accumulated and stored in the data accumulation and storage means.
  The conversion state management device according to claim 7.

Images