JP4976169B2 - Power supply unit for production line management means - Google Patents

Description

  The present invention relates to a power supply device for production line management means for managing a plurality of production lines.

  FIG. 6 shows a production line management system according to the prior art. The production line management system includes a plurality of facilities 101, 102, 103, and 104 arranged in a line, and a production line management means 105 that manages the operating state of the plurality of facilities 101, 102, 103, and 104. It is a provided configuration. The equipment 101 located on the upstream side becomes the transported goods input equipment 101 and the transported goods are input, and the downstream end equipment 104 becomes the transported goods take-out equipment 104 and the transported goods are taken out.

  In the figure, reference numeral 106 denotes a production start switch provided in the vicinity of the conveyed product input equipment 101. In the figure, reference numeral 107 denotes a production end switch provided in the vicinity of the conveyed product take-out equipment 104.

  In the facilities 101, 102, 103, and 104, the transported product input from the transported product input facility 101 is transported in the direction indicated by the arrow between the transported product input facility 101 and the transported product take-out facility 104. Predetermined processing or assembly processing is performed. In addition, the conveyed product input facility 101 is provided with a conveyed product input number count switch 108, and the conveyed product extraction facility 104 is provided with a conveyed product extraction number count switch 109.

  The production line management means 105 has a memory 110, which stores production line operation information (production result information) and a production line management program.

  As the operation information (production result information), the product number of the conveyed product, the number of the conveyed product counted by the conveyed product input number count switch 108, the number of the conveyed product counted by the conveyed product removal number count switch 109, Corresponds to the part number of the transported product. The product number of the conveyed product is input by a barcode or the like.

  Further, as the production line management program, the number of conveyed products counted by the conveyed product ejection number count switch 109 is subtracted from the number of conveyed products counted by the conveyed product input number count switch 108. To calculate the machining time by calculating the difference between the time when the last machining was completed and the time when the last machining was completed and the program for counting the number of defective products removed in the middle of the production line This corresponds to a program, a program for managing the date of work, line start time, line stop time, and the like.

  By the way, since the processing speed of the volatile memory is high, a volatile memory is used as the memory 110. However, when the supply of power to the volatile memory is stopped due to a power failure or the like, the contents of the memory 110 are stored. Has disappeared, and the information accumulated so far cannot be used. For this reason, a device that backs up the power source of the volatile memory in the event of a momentary power failure is generally used. However, since such a device is generally large-scale, a device that provides a power supply device having a function of backing up the power supply of the volatile memory with a simple configuration has been desired.

  Therefore, the present invention has been made in view of the problems of the prior art, and an object of the present invention is to provide a device capable of backing up the power source of the volatile memory with a simple configuration in the event of a power failure of the commercial power source. Is to make it.

The present invention, actual production information of the production line, and a power supply of the volatile memory and volatile memory for storing a program for managing the production line, comprising a spare nonvolatile memory, the program for the production line management A power supply device for production line management means for managing the operation status of the production line based on
When power supplied from a commercial power source is converted into DC power by a rectifier circuit, the DC power is supplied to the volatile memory, and the DC power is supplied to a capacitor. The stored power is supplied to the volatile memory, and
A timer that starts when the current value supplied from the commercial power source to the rectifier circuit becomes zero and measures the power failure time of the commercial power source ;
Memory control means for storing the contents of the volatile memory in the nonvolatile memory when the power failure time measured by the timer elapses for a predetermined time or longer.

  When the commercial power supply fails, the stored power of the capacitor is supplied to the volatile memory, and when the commercial power supply power outage time exceeds a predetermined time, the contents of the volatile memory are transferred to the nonvolatile memory and stored.

  FIG. 1 shows a production line management system according to the present invention. The production line management system is a system for managing a plurality of production lines, and the drawing shows a case where three production lines are managed.

  In each production line, a plurality of facilities 1, 2, 3, 4 are arranged in a line, and the production line management means 5 for managing the operating state of the plurality of facilities 1, 2, 3, 4 The configuration is provided for each line.

  The equipment 1 located on the upstream side becomes the transported goods input equipment 1 and the transported goods are input, and the equipment 4 at the downstream end becomes the transported goods take-out equipment 4 and the transported goods are taken out. A production start switch 6 is provided in the vicinity of the conveyed product input facility 1. Further, a production end switch 7 is provided in the vicinity of the conveyed product take-out equipment 4.

  While the transported product input from the transported product input facility 1 is transported between the transported product input facility 1 and the transported product take-out facility 4, predetermined processing or Assembly processing is performed. The transported product input facility 1 is provided with a transported product input number count switch 8, and the transported product take-out facility 4 is provided with a transported product take-out number count switch 9.

  Each production line management means 5 has a memory 10 in which operation information (production result information) of each production line and a program for managing each production line are stored.

  As the operation information (production result information), the product number of the transported product, the number of transported products counted by the transported product loading number count switch 8, the number of transported products counted by the transported product take-out count switch 9, Corresponds to the part number of the transported product. The product number of the conveyed product is input by a barcode or the like.

  Further, as the production line management program, the number of conveyed products counted by the conveyed product ejection number count switch 9 is subtracted from the number of conveyed products counted by the conveyed product input number count switch 8. To calculate the machining time by calculating the difference between the time when the last machining was completed and the time when the last machining was completed and the program for counting the number of defective products removed in the middle of the production line Recognize the start of the production model by operating the program, program that manages the date of work, line start time, line stop time, and production start switch, and stop the production model by operating the production end switch Recognized programs are applicable.

  FIG. 2 shows the configuration of the power supply device of the memory 10 provided in each production line management means 5. The memory 10 includes a volatile memory 11 and a nonvolatile memory 12, and has a power supply backup function.

  A rectifier circuit 14 and a smoothing circuit 15 are connected to the commercial power supply 13, and a capacitor 16 and a volatile memory 11 are connected to the smoothing circuit 15 in parallel. In the figure, reference numeral 17 denotes a timer. The timer 17 has a current value supplied from the commercial power supply 13 when the current value supplied from the commercial power supply 13 to the rectifier circuit 14 becomes zero, that is, due to a lightning strike or the like. It starts when it reaches zero.

  The timer 17 activates the memory control means 18 when the current value supplied from the commercial power supply 13 to the rectifier circuit 14 is zero even after a predetermined time, for example, 10 seconds has elapsed since starting. It is configured as follows. The memory control means 18 is configured to read the contents of the volatile memory 11 and write it to the nonvolatile memory 12, and the nonvolatile memory 12 is provided as a backup memory. Here, the nonvolatile memory 12 corresponds to, for example, a flash memory.

  As shown in FIG. 1, each production line management means 5 provided for each production line has an input means 19 for inputting a code for specifying each production line.

  Each production line management means 5 is connected to the database server 20 by wire or wirelessly. By specifying each production line with the input means 19, operation information (production result information) and production line management program related to each production line can be transmitted and received between each production line management means 5 and the database server 20. It has become. Further, the database server 20 is controlled by a time server 21 so that the time is adjusted to an accurate time.

  The production line management means 5 and the input means 19 can be constituted by a personal computer or the like. In this case, the input means 19 can be constituted by a keyboard of a personal computer, and the input means 19 can also be constituted by a touch panel.

  As shown in FIG. 3, the database server 20 has a line-specific information table 31, and manages each production line, a code for identifying each production line, and each production line management program in correspondence with each other. is doing.

  Next, an operation when the commercial power source 13 shown in FIG. 2 is interrupted during operation of the production line will be described. When power is not supplied from the commercial power supply 13 to the volatile memory 11 due to a power failure or the like, the power stored in the capacitor 16 is supplied to the volatile memory 11.

  Next, when a predetermined time, for example, 10 seconds elapses after power is not supplied from the commercial power supply 16, the timer 17 activates the memory control unit 18 to transfer the contents of the volatile memory 11 to the nonvolatile memory 12. To do.

  When the commercial power supply 13 is restored, the timer 17 that senses that power is being supplied from the commercial power supply 13 to the rectifier circuit 14 controls the memory control means 18 so that the contents of the nonvolatile memory 12 are stored in the volatile memory. 11 for transfer.

  Thus, the memory 10 can be effectively operated even when power is not supplied from the commercial power supply 13 due to a power failure or the like.

  Next, the operation of starting the production line and transporting the conveyed product will be described. First, prior to starting the production line, the person in charge of production sets the contents of the production plan / actual data table 32 as shown in FIG. 4 by operating the database server 20 shown in FIG. In this case, the production plan / actual data table 32 stores the date, the planned number, the production order, the number of inputs, the number of withdrawals, etc. associated with each line. Note that the database server 20 is controlled by the time server 21 so that the current time is adjusted in advance.

  Next, when the operator activates the production line management means 5 and inputs a code for identifying each production line from the input means 19 shown in FIG. The contents of each production line stored in the production plan / actual data table 32 (shown in FIG. 4) are downloaded and stored in the memory 10. Thereafter, each production line management means 5 controls each production line based on a production line management program downloaded from the database server 20.

  Next, the operator operates the production start switch 6 shown in FIG. 1 to activate the production line, input the conveyed product from the conveyed product input facility 1, and take out the conveyed product from the conveyed product removal facility 4. The transported product is subjected to a predetermined process between the transported product input facility 1 and the transported product take-out facility 4.

  The number of transported products input from the transported product input facility 1 is counted by the transported product input count switch 8 and stored in the memory 10 of the production line management means 5, while being uploaded to the database server 20 and shown in FIG. It is stored in the production plan / result data table 32 shown. Further, the number of transported articles taken out from the transported product take-out facility 4 is counted by the transported product take-out count switch 9 and stored in the memory 10 of the production line management means 5, while being uploaded to the database server 20 for production. It is stored in the plan / actual data table 32.

  Further, the number of defective products is obtained by subtracting the count value of the transported product take-out number count switch 9 from the count value of the transported product input number count switch 8, and is stored in the memory 10 of the production line management means 5. The data is uploaded to the database server 20 and stored in the production plan / result data table 32 shown in FIG.

  When the production of the current model is completed at the facility 4, the operator operates the production end switch 7.

  Next, it is assumed that the production line management means 5 has failed. In this case, after stopping the production line, the operator installs a new production line management means 5 in the production line in place of the failed production line management means 5, while inputting a code for specifying the production line 19 By inputting from (shown in FIG. 1), the new production line management means 5 uses the line-specific information table 31 (shown in FIG. 3) of the database server 20 to identify the production line-specific information specified as described above. Is downloaded and stored in the memory 10.

  The production schedule information and the production line management program accumulated so far in the production plan / result data table 32 (shown in FIG. 4) of the database server 20 are downloaded to the memory 10 of the new production line management means 5. Will be saved.

  Thereafter, the production line is restarted to continue the processing of the conveyed product.

  As described above, since the operation information (production result information) for each production line and the management program for each production line are collectively managed by the database server 20, the input means 19 of the production line management means 5 is used. From the database server 20, it is possible to download the unique line setting information and production line management program for each production line to each production line management means 5 simply by inputting a code for identifying the production line from When the line management means 5 breaks down and is replaced with a new production line management means 5, the replacement work can be easily handled.

  In the above description, the production line management means 5 is replaced with the new production line management means 5. However, when the production line management means 5 is initially set when a production line is newly installed, By downloading the contents of the initial setting from the database server 20, the production line management means 5 can be easily initialized.

  Furthermore, even when the production line management means 5 is re-initialized by moving the production line, the production line management means 5 can be easily initialized by downloading the contents of the initial settings from the database server 20. Can do.

  FIG. 5 shows a second embodiment. The feature of the second embodiment is that a conveyance product input number count switch 8 is provided in one or a plurality of facilities at an arbitrary position on the upstream side of the production line. FIG. 5 shows a case where the transported product input number count switch 8 is provided in the two facilities 1 and 2. In the second embodiment having such a feature, the transported product can be input from any of the facilities 1 and 2 provided with the transported product input number count switch 8. Can be selected.

It is a block diagram of the present invention. (First embodiment) It is a block diagram which shows the power supply device of the memory of this invention. (First embodiment) A line-specific information table is shown. (First embodiment) The production plan / actual data table is shown. (First embodiment) It is a block diagram of the present invention. (Second Embodiment) It is a figure which shows background art. (Background technology)

Explanation of symbols

1-4 Equipment 5 Production line management means 10 Memory 11 provided in production line management means Volatile memory 12 Non-volatile memory 13 Commercial power supply 14 Rectifier circuit 15 Smoothing circuit 16 Capacitor
17 Timer
18 Memory control means

Claims (4)

Production results information production line, and a power supply of the volatile memory and volatile memory for storing a program for managing the production line, and a spare nonvolatile memory, the basis of the program for management said production line production A power supply device for production line management means for managing the operation status of the line,
When power supplied from a commercial power source is converted into DC power by a rectifier circuit, the DC power is supplied to the volatile memory, and the DC power is supplied to a capacitor. The stored power is supplied to the volatile memory, and
A timer that starts when the current value supplied from the commercial power source to the rectifier circuit becomes zero and measures the power failure time of the commercial power source ;
A memory control means for storing the contents of the volatile memory in the non-volatile memory when the power failure time measured by the timer has exceeded a predetermined time; Power supply.   2. The power supply apparatus for production line management means according to claim 1, wherein the production performance information is a product number and the number of conveyed products conveyed on the production line.   The said production line management means is provided with the touch panel which inputs the product number and the number of the said conveyance goods, The said volatile memory and the non-volatile memory were provided in this touch panel, The Claim 1 or Claim 2 characterized by the above-mentioned. Power supply for production line management means.   The power supply apparatus for a production line management means according to any one of claims 1 to 3, wherein the nonvolatile memory is a flash memory.

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