JP2008149834A - Load torque measuring device for point and point managing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To support a series of works of measurement and maintenance works of load torque of a point by a maintenance worker at a field. <P>SOLUTION: This portable measuring device 1 for measuring the load torque of the point is provided with a dial 20 for selecting the kind of the point to be a measuring object by a rotating operation, a display 10 with an integrally formed touch panel, and a connection terminal 30 to be connected to terminals for measuring voltage and for measuring current of a terminal board of the point. The device 1 stores a plurality of characteristic data defining the relation between driving voltage V and driving current I of a motor and the load torque T for every kind of the points. The load torque T is calculated based on the driving voltage V and driving current I of the point measured via the connection terminal 30 in accordance with the kind of the characteristic data instructed by an instruction mark 21 of the dial 20 and is displayed on the display 10 together with the load torque or disturbance torque in the previous measurement in the point to be the measuring object. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a portable load torque measuring device for a switch and the like that measures the load torque of the switch.

As a device for measuring the load torque of an electric switch, the drive current and drive voltage for driving the motor of the switch are measured, and the measured current and voltage values are based on torque conversion data stored in advance. A device is known that performs torque conversion from and stores or displays it as a dynamic load torque (see, for example, Patent Document 1).
JP 2000-168557 A

  Although the conventional load torque measuring device described above makes it easy to measure the load torque of an electric switch, there are the following problems for practical use and utilization.

(1) Judgment of maintenance work The load torque of the switch is measured for the purpose of the maintenance work of the switch. That is, the maintenance staff measures the load torque of the switch machine installed at the site, and determines the necessity / unnecessity of maintenance work for this switch machine and the countermeasures to the problem part from the measured load torque. . However, since skill is required to make an appropriate judgment, maintenance personnel with a certain degree of experience are desired.

(2) Types of switchboards Switchboards are identified by the location where they are installed in train operation. However, even if the function is the same turning machine, there are many types of turning machines, and the torque characteristics differ depending on the type, and the characteristics differ depending on the manufacturer even for the same kind. For this reason, when measuring the load torque, it is necessary to use conversion data corresponding to the type and manufacturer of the switch to be measured. Furthermore, there is a replacement time (lifetime) for the installed switchboard, and there is a possibility that it will be replaced. Therefore, it is necessary to actually check the type of the switchboard to be measured on site. was there.

(3) Collection of measurement data In addition, when collecting measurement data for each switch, maintenance personnel, such as the number and type of the switch to be measured, the type of measurement, the date of conversion, the direction of conversion, and the direction of conversion are measured for each measurement. Record the data in a notebook and take it home. For example, these data are manually input to a management device such as a personal computer installed in the maintenance area. In this case, however, maintenance personnel may make a recording mistake when recording on a notebook in the field, and recording work under conditions such as rain, snow, and nighttime has been laborious. Furthermore, since manual input is performed while viewing recorded data, there is a risk of human error such as the presence of indistinguishable characters, misidentification of recorded characters, and data entry mistakes. As a result, the reliability of data was reduced.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to support a series of operations of measuring the load torque of the switch and maintenance work by maintenance personnel on site.

The first invention for solving the above-described problems is
Characteristic data storage for storing characteristic data (for example, characteristic data 322 in FIG. 12) defining the relationship between the driving voltage and driving current of the switching machine and the load torque in association with each type of the switching machine. Means (for example, the storage unit 300 in FIG. 12);
Measuring means for measuring the driving voltage and driving current of the switching machine (for example, the measuring unit 110 of FIG. 12) via a connection terminal (for example, the connection terminal 30 of FIG. 1) connected to the terminal board of the switching machine. )When,
In accordance with a user operation input, a type specifying unit (for example, the processing unit 200 in FIG. 12) that specifies the type of the switch to be measured by the measuring unit,
Load torque based on the drive voltage and drive current measured by the measuring means according to the characteristic data corresponding to the type specified by the type specifying means among the plurality of characteristic data stored in the characteristic data storage means Calculating means (for example, the processing unit 200 of FIG. 12) for calculating
Display control means (for example, the processing unit 200 in FIG. 12) for controlling display of the load torque calculated by the calculation means;
1 is a portable load torque measuring device (for example, the portable measuring device 1 of FIGS. 1 and 12).

  According to the first aspect of the present invention, the driving voltage and driving current of the switch are measured, and among the plurality of characteristic data stored in association with each type of the switch, according to the user's operation input According to the characteristic data corresponding to the specified type of the turning machine, a load torque measuring device for a turning machine is realized in which the load torque is calculated based on the measured voltage and current. As a result, it is possible to measure an appropriate load torque according to the type of the turning machine, and selection of an appropriate type of the turning machine can be performed by, for example, a maintenance person who has been sent to the site changing the measurement target. This is possible with an easy task of entering the machine type.

A second invention is a load torque measuring device for a turning machine according to the first invention,
The type specifying means is a switching mechanism (for example, the dial 20 in FIG. 1) that switches the type of the machine by a predetermined switching operation.
This is a load torque measuring device for a turning machine.

  According to the second aspect, the type of the switch to be measured is specified by the switching mechanism that switches the type of the switch by a predetermined switching operation. That is, it is possible to input the type of the switch to be measured by an easy operation such as switching the type of the switch.

The third invention is a load torque measuring device for a turning machine according to the first or second invention,
Among the equipment identification information for identifying each installed turning machine equipment, the equipment identification information of the turning machine to be measured by the measuring means (for example, the “turning machine number” in the embodiment) A switch machine equipment specifying means (for example, the processing unit 200 in FIG. 12) to be specified;
Measurement data storage means (for example, storage unit 300 in FIG. 12) that stores and stores the calculated load torque as measurement data in association with the equipment identification information specified by the switch machine equipment specification means;
It is a load torque measuring device for turning machines provided with.

  According to the third aspect of the invention, the equipment identification information of the switch to be measured is specified, and the calculated load torque is stored and stored as measurement data in association with the specified equipment identification information. That is, the calculated load torque is accumulated and stored as measurement data for each switch.

A fourth invention is a load torque measuring apparatus for a turning machine according to the third invention,
Of the measurement data stored and stored in the measurement data storage means, the display control means calculates the latest measurement data corresponding to the equipment identification information specified by the switch machine equipment specification means. Having nearest torque display control means (for example, the processing unit 200 in FIG. 12) that performs display control together with the load torque,
This is a load torque measuring device for a turning machine.

  According to the fourth aspect of the present invention, the most recent measurement data corresponding to the equipment identification information of the specified switching machine as the measurement target is displayed and controlled together with the calculated load torque. Is done. That is, together with the measured load torque, the previously measured load torque of the switch to be measured is displayed. This makes it possible to easily grasp changes in load torque since the previous measurement. For example, it is useful for determining the necessity / unnecessity of maintenance work for maintenance personnel at the site. Can be provided. It is also possible to confirm the effect of the measures taken by performing the measurement again after performing the maintenance work of the turning machine and observing the change in the load torque after the work and before the work. By the way, even for the same type of turning machine, the degree of change in the load torque of each turning machine depends on, for example, the conversion frequency, the number of days used, the positional relationship with other nearby devices, etc. Different. For this reason, it is possible to make a more accurate determination by displaying the past load torque of the turning machine that has performed the measurement.

A fifth invention is a load torque measuring device for a turning machine according to the fourth invention,
A measurement condition input means (for example, the operation unit 120 in FIG. 12) for inputting measurement conditions including at least the switching state of the turning machine is provided.
The measurement data storage means further stores the measurement conditions input by the measurement condition input means in association with each other.
This is a load torque measuring device for a turning machine.

  According to the fifth aspect of the invention, measurement conditions including the switching state of the switch are input, and the calculated load torque is stored in association with the input measurement conditions.

A sixth invention is a load torque measuring device for a turning machine of the fifth invention,
The latest torque display control means is measurement data corresponding to the equipment identification information specified by the switch machine equipment specification means among the measurement data stored and stored in the measurement data storage means, and corresponds Display and control the latest measurement data whose measurement condition matches the measurement condition input by the measurement condition input means;
This is a load torque measuring device for a turning machine.

  According to the sixth aspect of the present invention, the latest measurement data corresponding to the specified equipment identification information among the stored and stored measurement data, the corresponding measurement condition coincides with the input measurement condition. Data is displayed along with the measured load torque. That is, the load torque measured under the same measurement conditions as the current measurement in the turning machine that has performed the measurement is displayed together with the load torque measured this time. As a result, it is possible to provide more useful determination materials for determining whether maintenance work is necessary / unnecessary, for example, for maintenance personnel on site.

A seventh invention is a load torque measuring device for a turning machine according to the fifth or sixth invention,
Among the measurement data stored and stored in the measurement data storage means, the display control means is measurement data corresponding to the equipment identification information specified by the switch machine equipment specifying means, and corresponding measurement conditions Including a disturbing torque display control means (for example, the processing unit 200 in FIG. 12) that displays and controls measurement data in which the conversion state included in is a disturbance conversion together with the calculated load torque.
This is a load torque measuring device for a turning machine.

  According to the seventh aspect of the present invention, among the stored measurement data, the measurement data corresponding to the equipment identification information of the specified turning machine of the measurement object, the conversion included in the corresponding measurement condition The measurement data whose state is disturbance conversion is displayed together with the calculated load torque, that is, the load torque (interference torque) measured in the past in the state where the conversion was impossible in the measuring machine that performed the measurement Displayed with measured load torque. Thus, for example, for a maintenance staff in the field, a useful judgment material for judging whether or not the turning machine is in a state where it cannot be converted by comparing the measured load torque with the disturbance torque. Can be provided.

An eighth invention is a load torque measuring device for a turning machine according to any one of the third to seventh inventions,
The load torque calculated in the load torque measuring device for the switch machine is collected as measurement data, and is given from the management device (for example, the management device 5 in FIG. 20) that manages each switch machine. Acquisition means for acquiring the measurement data of the machine (for example, the data input / output unit 140 in FIG. 12);
Past data storage means (for example, the storage unit 300 in FIG. 12) for accumulating and storing the measurement data acquired by the acquisition means;
With
Among the measurement data stored in the past data storage means, the display control means displays the measurement data corresponding to the equipment identification information specified by the switch machine equipment specifying means together with the calculated load torque. Having past data display control means (for example, the processing unit 200 in FIG. 12) for display control;
This is a load torque measuring device for a turning machine.

  According to the eighth aspect of the present invention, the measurement data of the switching machine acquired from the management device is accumulated and stored, and the equipment identification information of the specified switching machine among the measurement data stored and stored. Is displayed together with the calculated load torque. That is, together with the measured load torque, the load torque measured in the past of the switch to be measured is displayed. This makes it possible to easily grasp changes in load torque since the time of past measurements. For example, it is useful for determining the necessity / unnecessity of maintenance work for on-site maintenance personnel. Can be provided. In addition, since the measurement data measured and stored in each of the plurality of measurement devices can be shared by the other measurement devices, a more convenient switch torque measuring device for a switching machine is realized.

According to a ninth aspect of the present invention, there is provided a load torque measuring device for a turning machine according to any one of the third to seventh aspects (for example, the portable measuring device 1 of FIG. 20), and the load torque measuring device for the turning machine. A switchboard management system (for example, the management system S of FIG. 20) provided with a management device (for example, the management device 5 of FIG. 20) for managing the load torque calculated in the step
The load torque measuring device for the turning machine is
Measurement data output means for outputting the measurement data stored in the measurement data storage means to the management device (for example, the data input / output unit 140 in FIG. 12);
The management device
Collected data storage means for storing and storing the measurement data output from the load torque measuring device for the switch for each switch;
Of the measurement data stored in the collected data storage means, collected data output means for outputting the measurement data of a given switch to the load torque measuring device for the switch,
Have
The load torque measuring device for the turning machine further comprises:
Past data storage means for storing and storing measurement data output from the management device (for example, the storage unit 300 in FIG. 12);
Among the measurement data stored in the past data storage means, the display control means displays the measurement data corresponding to the equipment identification information specified by the switch machine equipment specifying means together with the calculated load torque. Past data display control means (for example, the processing unit 200 in FIG. 12) for display control;
Having
It is a tipping machine management system.

  According to the ninth aspect of the present invention, the load torque measuring device for the switching machine and the management device are provided, the measurement data stored in the measurement device is output to the management device, and the output measurement data is the management device. In addition, the measurement data stored and stored in the management device is output to the measurement device, and the output measurement data is stored and stored in the measurement device. Among the stored and stored measurement data, a switching machine management system is realized in which measurement data corresponding to the equipment identification information of the specified switching machine is displayed together with the calculated load torque. . That is, in the measuring apparatus, the load torque measured in the past in the switching machine to be measured is displayed together with the measured load torque. As a result, it is possible to easily grasp changes in load torque from the past measurement time. For example, useful judgment materials for judging whether maintenance work is necessary / unnecessary for on-site maintenance personnel. Can be provided. In addition, since the measurement data measured and stored in each measurement device is shared with other measurement devices, a load torque measurement device for the switching machine that is more convenient to use is realized.

  According to the present invention, the driving voltage and driving current of the switch are measured, and are specified according to the user's operation input among the plurality of characteristic data stored in association with each type of the switch. According to the characteristic data corresponding to the type of the switch, a load torque measuring device for the switch is calculated in which the load torque is calculated based on the measured voltage and current. As a result, it is possible to measure an appropriate load torque according to the type of the turning machine, and selection of an appropriate type of the turning machine can be performed by, for example, a maintenance person who has been sent to the site changing the measurement target. This is possible with an easy task of entering the machine type.

  Further, the measured load torque is stored and stored as measurement data in association with the equipment identification information of the switch to be measured. Then, together with the measured load torque, the load torque measured last time in the measuring machine is displayed. This makes it possible to easily grasp changes in load torque since the previous measurement. For example, it is useful for determining the necessity / unnecessity of maintenance work for maintenance personnel at the site. Can be provided. It is also possible to confirm the effect of the measures taken by performing the measurement again after performing the maintenance work of the turning machine and observing the change in the load torque after the work and before the work.

  Further, the load torque (interference torque) measured in the past in the state where the conversion is impossible in the measuring machine is displayed together with the measured load torque. Thus, for example, for a maintenance staff in the field, a useful judgment material for judging whether or not the turning machine is in a state where it cannot be converted by comparing the measured load torque with the disturbance torque. Can be provided.

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

[External appearance example]
FIG. 1 is a diagram illustrating an example of an appearance of a portable measuring device 1 according to the present embodiment. This portable measuring device 1 is a portable load torque measuring device for a switch that measures the load torque of an electric switch, and is a substantially rectangular parallelepiped housing that can be carried by a user (user). A display 10 and a dial 20 are provided on the surface. The display 10 is integrally formed with a touch panel over the entire display area. The touch panel detects the touch operation position in units of dots constituting the display 10, for example, based on a detection principle such as a pressure-sensitive type, an optical type, an electrostatic type, and an electromagnetic induction type. The user can perform various operation inputs by touch operations on the display 10 with an attached touch pen or fingers.

  The dial 20 forms a switching mechanism for switching the type of the switch by a rotation operation for aligning the instruction mark 21 with the type of the switch indicated on the periphery. Here, the type of the flipping machine is selected by the dial 20, but the type of the flipping machine may be displayed on the display 10 and touched with a touch pen or the like for selection.

  In addition, on the bottom side surface of the housing, there are three connection terminals that can be connected to predetermined terminals (specifically, a terminal for measuring the driving voltage of the motor and a terminal for measuring the driving current) of the terminal board of the switchboard. 30 are respectively attached via cables 31 capable of transmitting electrical signals.

  Moreover, the portable measuring apparatus 1 has a built-in control circuit 40 in which a CPU, an IC memory, and the like are mounted. The CPU mounted on the control circuit 40 is based on the program and data read from the IC memory, the touch operation position detected by the touch panel, the rotational position of the dial 20, the measurement data input via the connection terminal 30, and the like. A process for measuring the load torque of the switch is executed.

[Operation example]
An example of the measuring operation of the switch using the portable measuring device 1 will be described. First, before use, turning machine installation data 321 and characteristic data 322, which will be described later, are input and stored. Note that it is preferable that these data are obtained from the management device 5 as will be described later with reference to FIG. 20 together with accumulated measurement data 335 described later. Next, the type of the turning machine to be measured is set. That is, the dial 20 is rotated, and the instruction mark 21 is set to the type of the turning machine to be measured. Further, each connection terminal 30 is connected to a predetermined terminal provided on the terminal board of the turning machine. Then, according to the instruction | indication displayed on the display 10, the touch operation with respect to the display 10 is performed, and the data regarding the measurement of load torque are input.

  Specifically, in order to specify the turning machine to be measured, identification data of this turning machine is input. First, a line area selection screen for selecting a line area is displayed. FIG. 2 is a diagram illustrating an example of a line selection screen. According to the figure, a plurality of line area icons 11 displaying each line area name are displayed on the line area selection screen. When any one of these line area icons 11 is touched and selected, a station selection screen for selecting a station is then displayed.

  FIG. 3 is a diagram illustrating an example of a station selection screen. According to the figure, on the station selection screen, a plurality of station icons 12 displaying the names of the stations in the line selected on the line selection screen are displayed. If any one of these station icons 12 is touched and selected, then a switch selection screen for selecting a switch is displayed.

  FIG. 4 is a diagram illustrating an example of the switching machine selection screen. According to the figure, the switch selection screen includes a plurality of switches that display the identification number (switching machine number) of each switch machine installed at the station selected on the station selection screen. A machine icon 13 is displayed. Here, the switch machine number is an identification number for identifying the laying place (so-called branching device) of each switch machine equipment laid. Further, the type of the same switch machine number may change due to replacement due to the life of the switch machine. Next, when any one of the turning machine icons 13 displayed on the turning machine selection screen is touched and selected, the input of the identification data of the turning machine is completed. Input the measurement conditions.

  Specifically, a conversion state selection screen for selecting the conversion state of the switch is displayed. FIG. 5 is a diagram illustrating an example of the conversion state selection screen. According to the figure, two conversion state icons 14 displaying each conversion state are displayed on the conversion state selection screen. Here, the conversion state includes “normal conversion” and “disturbance conversion”. The “disturbance conversion” is a conversion in a state where, for example, a foreign object is interposed between the movable rail and the basic rail of the branching device so that the conversion is intentionally impossible. When any one of these change state icons 14 is touched and selected, a change direction selection screen for selecting a change direction is then displayed.

  FIG. 6 is a diagram illustrating an example of the change direction selection screen. According to the figure, four change direction icons 15 displaying each change direction are displayed on the change direction selection screen. When any one of these change direction icons 15 is selected by touching, the input of the measurement conditions is completed, and then a confirmation screen for confirming the input content is displayed.

  FIG. 7 is a diagram illustrating an example of a confirmation screen. According to the figure, on the confirmation screen, the type of the input turning machine, the turning machine number, and the measurement conditions are displayed. If the input contents are confirmed and there is no mistake, the icon 16a displayed as “OK” is selected by touching, and a message for confirming the start of measurement (not shown) and an icon for instructing the start of measurement ( (Not shown) is displayed. When this icon is touched and selected, measurement starts. On the other hand, if there is an error in the input contents, the icon 16b displayed as “correct” is touched to select it, and the switch number and measurement conditions shown in FIGS. 2 to 6 are input again. Screen is displayed.

  After inputting the measurement start instruction, the user performs an operation of changing the turning machine under the input measurement conditions (change state and change direction). Then, the driving voltage and driving current of the motor of the switching machine are measured via the connection terminal 30 connected to the terminal board of the switching machine, and an operation based on the measured driving voltage and driving current is performed. The load torque accompanying the change of the switch is measured, and a measurement result screen displaying the measured load torque as a graph is displayed. In addition, the disturbance voltage comparison screen that compares the measured load torque with the disturbance torque is displayed on the measurement result screen as the disturbance torque obtained by converting the maximum value of the voltage and current measured at the time of disturbance conversion into the load torque. Is displayed.

  FIG. 8 is a diagram illustrating an example of an interference comparison screen. According to the figure, the measured load torque graph 18a is displayed on the disturbance comparison screen together with the disturbance torque graph 18b. In these graphs, the change in torque during conversion is displayed with time t on the horizontal axis and torque T on the vertical axis. The disturbing torque is a load torque when the conversion state is “disturbance conversion”. Specifically, it is the load torque measured in the past (more precisely, the latest measurement date before the current measurement date) at the turning machine where the measurement was performed. The state is “disturbance change”, and the change direction is the same load torque as the current measurement. When there is no corresponding load torque (interference torque), only the graph 18a of the load torque measured this time is displayed. In this interference comparison screen, when the previous comparison icon 17a displayed at the upper right of the screen is touched and selected, the previous comparison screen comparing the measured load torque with the load torque at the previous measurement (previous torque) is displayed. The

  FIG. 9 is a diagram illustrating an example of the previous comparison screen. According to the figure, the graph 18a of the measured load torque is displayed on the previous comparison screen together with the graph 18c of the previous torque. In these graphs, the horizontal axis represents time t and the vertical axis represents torque T. The previous torque is the load torque measured in the past (more precisely, the most recent measurement date prior to the current measurement date) at the turning machine where the measurement was performed, and the measurement conditions are the same. That is, the load torque has the same change state and change direction. When there is no corresponding load torque (previous torque), only the graph 18a of the load torque measured this time is displayed. On the previous comparison screen, when the interference comparison icon 17b displayed on the upper right of the screen is touched and selected, the screen is switched again to the interference comparison screen shown in FIG.

  In addition, when the type of the measured turning machine is different from the type at the previous measurement, as shown in FIG. 10, a message 19 to that effect is displayed on the previous comparison screen. That is, in the same figure, the type of the turning machine selected by the dial 20 in this measurement is “a-type”, but it was selected when the turning machine with the inputted turning machine number was measured last time. It is displayed that the type of the tipping machine was “c-type”.

[Measurement of load torque]
In the portable measuring device 1, the load torque is measured by measuring the driving voltage V and the driving current I of the motor of the switching machine, and calculating the load torque according to the predetermined characteristic data based on the measured voltage V and current I. It is realized by doing. This characteristic data is data defining the relationship between the driving voltage V and driving current I of the motor of the switching machine and the load torque T.

  By the way, the relationship between the drive voltage V and the drive current I and the load torque T differs depending on the type of the switch. FIG. 11 is a diagram illustrating an example of the current I-torque T characteristics of the switch when the voltage V is a predetermined voltage. In the figure, the characteristics of each of three different types of turning machines (x-type, y-type and z-type) are shown. That is, the graph shows the relationship between the drive current I and the load torque T when the drive current V is constant and the drive voltage V is constant, with the drive current I on the horizontal axis and the load torque T on the vertical axis.

  Although not shown, when the voltage V is different, the relationship between the current I and the torque T is also different. That is, the motor of the switch is driven at a predetermined voltage (for example, AC 100V), but the actual drive voltage V varies depending on various conditions such as whether it is near or far from the equipment room.

  As described above, the characteristics of the type of the switch are different. For this reason, in the portable measuring apparatus 1, a plurality of characteristic data is stored in advance in association with the type of the switch, and the load torque is calculated according to the characteristic data corresponding to the type of the switch to be measured. calculate.

[Internal configuration]
FIG. 12 is a diagram showing an internal configuration of the portable measuring device 1. As shown in the figure, the portable measuring apparatus 1 includes a measuring unit 110, an operation unit 120, a display unit 130, a data input / output unit 140, a processing unit 200, and a storage unit 300. .

  The measurement unit 110 includes the connection terminal 30 and measures the drive voltage V and the drive current I of the motor of the turning machine. That is, the driving voltage V and the driving current I of the motor of the switching machine are measured via the connection terminal 30, and the measured value that is analog data is converted into digital data and output to the processing unit 200.

  The operation unit 120 is a touch panel and a dial 20 formed integrally with the display 10, receives an operation instruction from the user of the portable measurement device 1, and outputs an operation signal corresponding to the operation to the processing unit 200. That is, data on the rotational position of the dial 20 is output to the processing unit 200, and data (coordinate data) on the touch operation position on the display 10 is output to the processing unit 200.

  The display unit 130 is the display 10 and displays the display screens shown in FIGS. 2 to 10, for example, according to the display signal input from the processing unit 200. The data input / output unit 140 has, for example, a communication cable connection terminal capable of data transfer, and performs data input / output with an external device.

  The processing unit 200 is a CPU mounted on the control circuit 40, and executes processing for measuring the load torque of the switch. Specifically, based on the data of the rotational position of the dial 20 input from the operation unit 120, the currently set type of the switch is determined. The determined switch type data is stored in the switch type data 331. FIG. 13 is a diagram illustrating an example of the data configuration of the switch type data 331. According to the figure, the switch type data 331 stores the type of the switch.

  Next, the processing unit 200 refers to the switch machine installation data 321 to sequentially display, for example, the screens illustrated in FIGS. 2 to 4 on the display unit 130 and input the identification data of the switch machine.

  The switch machine installation data 321 is data that stores the installation location of each switch machine. FIG. 14 is a diagram illustrating an example of a data configuration of the switch machine installation data 321. According to the figure, the switch machine installation data 321 includes a line 321a, a station 321b in the line 321a, and a switch number 321c of the switch installed in the station 321b. Are stored in association with each other.

  Further, the input identification data of the switch is stored in the switch identification data 332. FIG. 15 is a diagram illustrating an example of the data configuration of the switch identification data 332. According to the figure, the switch identification data 332 stores a line section 332a, a station 332b, and a switch number 332c.

  Subsequently, the processing unit 200 causes the display unit 130 to sequentially display, for example, the screens illustrated in FIG. 5 and FIG. The input measurement condition data is stored in the measurement condition data 333. FIG. 16 is a diagram illustrating an example of the data configuration of the measurement condition data 333. According to the figure, the measurement condition data 333 stores a conversion state 333a and a conversion direction 333b.

  Thereafter, the processing unit 200 refers to the switch type data 331, the switch identification data 332, and the measurement condition data 333, and displays a confirmation screen displaying the input content, for example, as shown in FIG. Display on the unit 130. When a measurement start instruction is input, the measurement is started. That is, the voltage V and the current I input from the measurement unit 110 are captured at predetermined time intervals, and when a predetermined time (a sufficient time required for one conversion) has elapsed since the start of measurement, the data capture is terminated. When the measurement is completed, the load machine type data 331 is referenced, and the load torque T is calculated based on the acquired voltage V and current I according to the characteristic data 322 corresponding to the type of the switch machine to be measured. To do.

  The characteristic data 322 is data that defines the relationship between the motor drive voltage V and current I and the load torque T for each type of switch. FIG. 17 is a diagram illustrating an example of the data configuration of the characteristic data 322. According to the figure, the characteristic data 322 is generated for each type of switch, and stores the corresponding switch type 322a and conversion data 322b. The conversion data 322b is data for converting the drive current I into the load torque T. In the figure, a graph representing the relationship between the drive current I and the load torque T is displayed for each of a plurality of drive voltages V (V1 to V3). The conversion data 322b may store a relational expression between the drive current I for each of the plurality of drive voltages V and the load torque T, or the drive current I and the load for each of the plurality of drive voltages V. A data table in which the torque T is associated may be stored.

  Data of the measured drive voltage V and drive current I and the calculated load torque T is stored in the measurement result data 334. FIG. 18 is a diagram illustrating an example of a data configuration of the measurement result data 334. According to the figure, the measurement result data 334 is data obtained by one measurement, and the measured drive voltage 334b and the drive current 334c are calculated for each elapsed time 334a from the start of measurement. The load torque 334d is stored in association with each other.

  Here, the calculation of the load torque T based on the measured voltage V and current I may be performed every time the voltage V and current I are captured at predetermined time intervals.

  Subsequently, the processing unit 200 displays a measurement result. That is, referring to the measurement result data 334 and the accumulated measurement data 335, an interference comparison screen on which the calculated load torque is displayed together with the interference torque is displayed on the display unit 130 as shown in FIG. 8, for example.

  Accumulated measurement data 335 is a set of accumulated measurement data stored so far. FIG. 19 is a diagram illustrating an example of the data configuration of the accumulated measurement data 335. According to the figure, the accumulated measurement data 335 is generated for each switch and stores the corresponding switch number 335a and individual measurement data 336. The individual measurement data 336 is data for one measurement. The measurement date 336a, the switch type 336b, the conversion state 336c and the conversion direction 336d as measurement conditions, and the measurement data for each time 336e. Load torque 336f is stored.

  Of the individual measurement data 336 stored in the accumulated measurement data 335 of the switching machine that is the measurement target, the processing unit 200 has a conversion state of “disturbance conversion” and a conversion direction in the current measurement. The individual measurement data 336 that is the same as the conversion direction and whose measurement date is closest to the current measurement date (that is, today's date) is extracted. Then, the measurement data stored in the extracted individual measurement data 336 is displayed as a disturbance torque on the disturbance comparison screen.

  If an instruction to display a comparison screen with the torque at the previous measurement is input on the interference comparison screen, the calculated load torque is displayed together with the previous torque with reference to the measurement result data 334 and the accumulated measurement data 335. The previous comparison screen is displayed on the display unit 130 as shown in FIG. 9, for example. That is, among the individual measurement data 336 stored in the accumulated measurement data 335 of the switching machine that is the measurement target, the measurement conditions are the same as the measurement conditions in the current measurement, and the measurement date is the current measurement. The individual measurement data 336 closest to the day (ie, today's date) is extracted. Then, the measurement data stored in the extracted individual measurement data 336 is displayed on the previous comparison screen as the previous torque.

  Further, the processing unit 200 adds data about the current measurement to the accumulated measurement data 335. In other words, the load torque for each hour stored in the measurement result data 334 is used as measurement data, and this measurement data is used as the measurement date, today's date, and the switch type data stored in the switch type data 331. And individual measurement data 336 together with the measurement conditions stored in the measurement condition data 333, and this individual measurement data 336 is added to the accumulated measurement data 335 of the switch that is the measurement target.

  In FIG. 12, a storage unit 300 is an IC memory such as a ROM or a RAM mounted on the control circuit 40, and implements various functions for causing the processing unit 200 to control the portable measuring apparatus 1 in an integrated manner. The system program and programs and data necessary for executing load torque measurement are stored and used as a work area of the processing unit 200. In this embodiment, the storage unit 300 stores, as a program, a load torque measurement program 310 for causing the processing unit 200 to execute a load torque measurement process, and as data, the switch machine installation data 321 and , Characteristic data 322, turning machine type data 331, turning machine identification data 332, measurement condition data 333, measurement result data 334, and accumulated measurement data 335 are stored.

[Action / Effect]
As described above, according to the present embodiment, the characteristic data 322 defining the relationship between the motor driving voltage V and the driving current I and the load torque T is stored for each type of the switching machine, and at the same time. The driving voltage V and driving current I of the motor of the lever machine are measured, and among the stored characteristic data 322, according to the characteristic data 322 of the type set by the user as the type of the switching machine to be measured, The portable measuring device 1 that calculates and displays the load torque T based on the measured drive voltage V and drive current I is realized. That is, the load torque T is calculated according to the characteristic data 322 set as the type of the switching machine to be measured among the plurality of characteristic data 322 for each type of the switching machine. This makes it possible to measure the load torque for a plurality of types of turning machines with a single device, thereby realizing more efficient measurement. Moreover, since the input of the measuring machine number and the measurement conditions to be measured is realized by a touch operation on the display 10, the operability in the field is remarkably improved.

  In addition, as a measurement result, together with the measured load torque, the load torque (previous torque) measured last time in the switching machine to be measured, or the load torque when the conversion state is “interference conversion” (interference torque) ) Is displayed. Accordingly, it is possible to provide useful determination materials for determining whether maintenance work is necessary / unnecessary to the maintenance staff at the site. Furthermore, by displaying the past load torque in the switching machine to be measured as the previous torque, a more accurate determination can be made.

[Modification]
In addition, the applicable embodiment of this invention is not limited to the above-mentioned embodiment, It can change suitably in the range which does not deviate from the meaning of this invention.

(A) Selection of type of turning machine For example, in the above-described embodiment, the type of the turning machine to be measured is selected by rotating the dial 20, but not the dial 20. It is also possible to provide a button switch to which the type of the machine is assigned and to realize this by pressing the button switch. Alternatively, a type selection screen that displays the type of the machine is displayed on the display 10 and the displayed type may be selected by a touch operation.

(B) Display of measurement result In the above embodiment, the load torque measured this time is displayed in comparison with the load torque measured in the past. You may make it display superimposed on every measurement until confirmation operation is performed. As a result, after performing the maintenance work of the turning machine, it is possible to measure again, and to confirm the effect of the measures taken by looking at the change in load torque after the work and before the work. Further, the driving current and driving voltage of the switching machine measured and stored may be displayed together with the load torque, or may be displayed as a conversion force converted into the magnitude of the load based on the load torque.

(C) Management of measurement data In addition, for example, in a management device installed in a maintenance area, measurement data from the portable measurement device 1 may be managed in time series.

  Specifically, as shown in FIG. 20, for example, a management system S including a management device 5 installed in a maintenance area and a plurality of portable measurement devices 1 is configured. In addition, the management device 5 and each portable measuring device 1 are connected to each other through, for example, an information storage medium that is detachably attached to both devices, or connected by a connection cable capable of data communication. Communication is possible. The management device 5 is realized by, for example, a server computer system, and collects and manages measurement data from each portable measurement device 1.

  In the management system S, when the measurement of the load torque of the switch 3 using the portable measuring device 1 is completed and the portable measuring device 1 is brought back to the maintenance area, the portable measuring device 1 The stored accumulated measurement data 335 is output to the management device 5. In the management device 5, the data input from the portable measuring device 1 is accumulated and stored for each machine number.

  In addition, before the maintenance staff visits the site to measure the load torque of the rolling machine, for example, the management device 5 inputs the line section or station where each rolling machine to be measured and maintained is laid. To do. Then, among the measurement data stored and stored in the management device 5, the measurement data corresponding to each turning machine installed in the input line section or station is output to the portable measurement device 1. Then, in the portable measuring device 1, the measurement data input from the management device 5 is added to the accumulated measurement data 335 for each switch number.

An example of the appearance of a portable measuring device of an embodiment. An example of a line selection screen. An example of a station selection screen. An example of a switching machine selection screen. An example of a conversion state selection screen. An example of a change direction selection screen. An example of a confirmation screen. An example of an interference comparison screen. An example of the previous comparison screen. Another example of the previous comparison screen. Examples of the characteristics of multiple different types of turning machines. The internal structural example of a portable measuring device. An example of the data structure of the switch type data. An example of the data structure of the turning machine installation data. The data structural example of a switch machine identification data. Data configuration example of measurement condition data. Data configuration example of characteristic data. Data configuration example of measurement result data. Data configuration example of accumulated measurement data. Configuration example of the management system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Portable measuring apparatus 110 Measuring part 120 Operation part 130 Display part 140 Data input / output part 200 Processing part 300 Storage part 310 Load torque measurement program 321 Turning machine installation data 322 Characteristic data 331 Turning machine type data 332 Machine identification data 333 Measurement condition data 334 Measurement result data 335 Accumulated measurement data 3 Switch machine 5 Management device S Management system

Claims (9)

Characteristic data storage means for storing characteristic data defining the relationship between the driving voltage and driving current of the switch and the load torque in association with each type of switch.
Measuring means for measuring the driving voltage and driving current of the turning machine via a connection terminal connected to the terminal board of the turning machine;
According to the user's operation input, the type specifying means for specifying the type of the switch to be measured by the measuring means,
Load torque based on the drive voltage and drive current measured by the measuring means according to the characteristic data corresponding to the type specified by the type specifying means among the plurality of characteristic data stored in the characteristic data storage means Calculating means for calculating
Display control means for controlling display of the load torque calculated by the calculation means;
A load torque measuring device for portable switchboards equipped with The type specifying means is a switching mechanism that switches the type of the machine by a predetermined switching operation.
The load torque measuring device for a switch machine according to claim 1. Of the equipment identification information for identifying each installed turning machine equipment, the turning machine equipment specifying means for specifying the equipment identification information of the turning machine to be measured by the measuring means,
Measurement data storage means for storing and storing the calculated load torque as measurement data in association with the equipment identification information specified by the switch machine equipment specification means,
The load torque measuring device for a switch machine according to claim 1 or 2, further comprising: Of the measurement data stored and stored in the measurement data storage means, the display control means calculates the latest measurement data corresponding to the equipment identification information specified by the switch machine equipment specification means. Having nearest torque display control means for display control together with load torque,
The load torque measuring device for a switch machine according to claim 3. A measurement condition input means for inputting measurement conditions including at least the switching state of the turning machine;
The measurement data storage means further stores the measurement conditions input by the measurement condition input means in association with each other.
The load torque measuring device for a switch machine according to claim 4. The latest torque display control means is measurement data corresponding to the equipment identification information specified by the switch machine equipment specification means among the measurement data stored and stored in the measurement data storage means, and corresponds Display and control the latest measurement data whose measurement condition matches the measurement condition input by the measurement condition input means;
The load torque measuring device for a switch machine according to claim 5. Among the measurement data stored and stored in the measurement data storage means, the display control means is measurement data corresponding to the equipment identification information specified by the switch machine equipment specifying means, and corresponding measurement conditions Including a disturbing torque display control means for displaying and controlling measurement data in which the conversion state included in is a disturbance conversion together with the calculated load torque,
The load torque measuring device for a switch machine according to claim 5 or 6. An acquisition means for collecting the load torque calculated in the load torque measuring device for the turning machine as measurement data and obtaining the measurement data of the given turning machine from a management device that manages each of the turning machine. ,
Past data storage means for accumulating and storing measurement data acquired by the acquisition means;
With
Among the measurement data stored in the past data storage means, the display control means displays the measurement data corresponding to the equipment identification information specified by the switch machine equipment specifying means together with the calculated load torque. Having past data display control means for display control,
The load torque measuring device for a switch machine according to any one of claims 3 to 7. A load torque measuring device for a turning machine according to any one of claims 3 to 7 and a management device for managing a load torque calculated in the load torque measuring device for a turning machine. A machine management system,
The load torque measuring device for the turning machine is
Measurement data output means for outputting the measurement data stored in the measurement data storage means to the management device;
The management device
Collected data storage means for storing and storing the measurement data output from the load torque measuring device for the switch for each switch;
Of the measurement data stored in the collected data storage means, collected data output means for outputting the measurement data of a given switch to the load torque measuring device for the switch,
Have
The load torque measuring device for the turning machine further comprises:
Past data storage means for accumulating and storing measurement data output from the management device;
Among the measurement data stored in the past data storage means, the display control means displays the measurement data corresponding to the equipment identification information specified by the switch machine equipment specifying means together with the calculated load torque. Past data display control means for display control;
Having
Tumble machine management system.

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