JP2014056385A - Work management system and energy management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work management system capable of inspecting energy resources required for manufacturing a product and of managing a work process.SOLUTION: The work management system includes: a management server for managing a work process; a work terminal which has a switch for switching a work drawing of a work process received from the management server and a control apparatus for transmitting the time when an operation of the switch is detected, in association with management identification information of the work process, as work result information to the management server; and a measuring instrument for measuring electric power supplied to a work object article disposed in a work place and transmitting the measurement data to the management server. The management server, for each piece of the management identification information of the work process, registers power consumption per unit hour and work hours with a registration unit on the basis of the received work result information and measurement data, and rearranges the work process so as to satisfy a limit value of power consumption during a prescribed period on the basis of the power consumption and work hours for each piece of the management identification information of the work process, when the limit value of power consumption during the prescribed period is accepted.

Description

  The present invention relates to a work management system and an energy management system including a management server that collects work performance data from work terminals, manages work performance data, and manages work processes.

  As a method for specifying the work time, which is work performance data, for example, for identifying a work target object by reading a worker identification IC (Integrated Circuit) tag carried by the worker with an IC tag reader. The IC tag is read by an IC tag reader. The information that identifies the work area is added to the read information and sent to the results management CPU (Central Processing Unit), and the operation time information of the work equipment installed in each work area is also displayed. An invention of a method for specifying a working time by transmitting to a performance management CPU by a control device is disclosed (for example, see Patent Document 1).

  Also, a work identification IC tag in which information for identifying the work content of the work target article is written, a work management box having a slot for loading the work identification IC tag during work, and a side of the work management box. A work performance collecting system including an IC tag reading device that reads a work identification IC tag and transmits the read information to a work performance management device is disclosed (for example, see Patent Document 2).

JP 2005-182656 A JP 2007-328665 A

  The IC tag reading device described in Patent Document 1 transmits the read information, and the work facility control device transmits operating time information of the work facility to the result management CPU.

  The IC tag reading device described in Patent Document 2 is also information that specifies communication start information from the wireless LAN communication device to the work performance management device and the work identification IC tag and the work content of the work target article. And send. The communication start information includes a work management box ID (IDentification) and a work start time. The information specifying the work content of the work target article includes, for example, the work order number, the product name or model number of the product / semi-finished product to be manufactured, and the number of producers.

  In order to put competitive products on the market, it is necessary to set prices for products to be manufactured more strictly. For this purpose, it is desired to examine more closely the assets (management resources) necessary for producing products. According to Patent Document 1 and Patent Document 2, it is possible to manage human resources, places, time, and work facilities as management resources, but energy resources necessary for manufacturing the product are not sufficiently considered. There's a problem.

  The present invention is an invention for solving the above-described problems, and provides a work management system and an energy management system capable of examining energy resources necessary for manufacturing a product and managing work processes. For the purpose.

  In order to achieve the above object, a work management system of the present invention includes a management server that manages work processes, and a display device that is installed in a work place (for example, test facility area 50) and displays work processes received from the management server. A switch for the operator to switch the work process displayed on the display device, and a control device for associating the time when the operation of the switch is detected with the management identification information of the work process and transmitting it to the management server as work result information A management terminal comprising: a work terminal; and a measuring instrument that measures electric power supplied to a work target article (for example, UPS 60) arranged at a work place and transmits the measured measurement data to the management server. Based on the received work performance information and measurement data, the power consumption and work time per unit time are registered in the storage unit for each work process management identification information. When the power usage limit value within a predetermined period is received, the work process is configured to satisfy the power usage limit value within the predetermined period based on the power used and the work time for each management identification information of the work process. It is characterized by rearranging.

  In addition, after rearranging the work processes, the management server transmits the information on the rearranged work processes to the work terminal when the work terminal instructs to start the work contents including the same work process. Features.

  ADVANTAGE OF THE INVENTION According to this invention, while examining the energy resource required for manufacturing a product, a work process can be managed.

It is a block diagram which shows the work management system of Embodiment 1 which concerns on this invention. It is an external appearance perspective view which shows an example of a test equipment area. It is explanatory drawing which shows an example of the internal circuit of UPS. It is a flowchart which shows the procedure of a work management system. It is explanatory drawing which shows the work performance collection data recorded on the memory | storage part of the management server. It is explanatory drawing which shows an example of a work performance collection result. It is a block diagram which shows the work management system of Embodiment 2 which concerns on this invention. It is explanatory drawing which shows the work performance collection data recorded on the memory | storage part of the management server of Embodiment 2. FIG. It is explanatory drawing which shows the work performance collection method of a work management system. It is explanatory drawing which shows the work performance collection data of the work according to process recorded on the memory | storage part of the management server. It is explanatory drawing which shows the test item of the format test for UPS performance characteristics. It is explanatory drawing which shows the test item of a UPS factory attendance test. It is a flowchart which shows rearrangement | work of the work process based on an electric power utilization limit value. It is explanatory drawing which shows rearrangement | work of the work process based on a power utilization restriction value. It is explanatory drawing which shows adjustment of the rearrangement of the work process based on an electric power utilization limit value.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. There are various types of energy resources required for manufacturing, such as the amount of power, gas, and water, but the relationship with the amount of power, taking the product of the power equipment manufacturing department, especially UPS (Uninterruptible Power Supply) as an example Will be described.

  In the assembly process of UPS, people, place, time, and work equipment are important factors mainly as the management resources mentioned above, but in the inspection process (certification process), the electric energy and peak value are particularly important as management resources. Factors. The present embodiment aims to accumulate necessary energy intensity information (test power consumption for each product, peak value) to improve the accuracy of intensity data. In the following embodiments, an inspection process is taken as an example. However, even an in-line inspection process incorporated in an assembly process may be a process that requires detailed examination of energy resources.

  The energy intensity is a value representing energy efficiency, and is a total amount of energy consumption such as electric power and heat (fuel) necessary to produce a unit amount of product or amount.

Embodiment 1
FIG. 1 is a configuration diagram showing a work management system according to the first embodiment of the present invention. The work management system S includes a work terminal 10 installed in the test equipment area 50 (work place), a work server 10 that collects work results from the work terminal 10 and manages work results, and manages work processes, and a measurement. A container 30 and an instruction issuing terminal 40 are provided. The work terminal 10, the management server 20, the measuring instrument 30, and the instruction issuing terminal 40 are connected by a network 90 such as a LAN (Local Area Network).

  The management server 20 includes a processing unit 21 and a storage unit 22. The processing unit 21 includes a work result collecting unit 211 that collects work results from the work terminal 10, and an energy limit value (for example, power limit) for a predetermined period. When the (value) is received, a work process management unit 212 that rearranges work processes within the energy limit value within the predetermined period is provided. In addition, the management server 20 collects usage records of the power supplied to the test facility area 50 via the measuring device 30.

  As shown in FIG. 1, the UPS inspection test site has a plurality of test facility areas 50, and UPS 60 (UPS 1, UPS 2,...) That is a work target article (inspection target article) that is a finished product. , UPSn) is installed between the power lead-in line 52 in the test facility area 50 and the load tester 51. The inspector performs a UPS 60 test on a preset test item and makes a pass / fail judgment.

  The instruction issuing terminal 40 is a terminal that issues an instruction 70 in a SUB (sub) assembly process, an assembly process, an inspection process (article verification process), and the like. In the inspection process, the inspection product is registered in the storage unit 22 of the management server 20. The registration of the inspection product is registered if the product number, model, solid identification number, etc. of the product for which the total assembly has been completed is given.

  Although not shown, the instruction issuing terminal 40 includes a processing unit, an input unit, a display unit, an IC tag reader / writer, and a printer, and the processing unit issues an instruction issuing unit 41 that issues an instruction 70 for performing an inspection process, A tag issuing unit 42 that issues an IC tag is provided, and an instruction 70 is output by a printer in accordance with an instruction from the instruction issuing unit 41. Further, the tag issuing unit 42 writes information for specifying the work content of the work target article into the work specifying IC tag 71 in response to an instruction from the instruction issuing unit 41 to the IC tag reader / writer. The information for specifying the work content of the work object is, for example, an instruction number, a product number, a model, a solid identification number, an inspection item, and the like. The work identification IC tag 71 uses a non-contact wireless IC tag such as RFID (Radio frequency identification) and is attached to the document of the instruction 70.

  The work terminal 10 is attached to the LAN communication device 11, the soft key switch 13 for instructing to switch the screen of the inspection drawing displayed on the display device 14, and the IC tag place 15a, and is placed in the IC tag place 15a. An IC tag reader / writer 15 (IC tag reader) for reading the information of the IC tag, and a control device 12 for transmitting the information read by the IC tag reader / writer 15 to the management server 20 via the communication device 11. .

  The control device 12 has a function of controlling the UPS 60 and the load tester 51, and can control each switch (see FIG. 3) in the UPS 60 according to the test item.

  In the IC tag place 15a, an instruction 70 attached with a work specifying IC tag 71 in which information specifying the work content of the above-described work target article is written, and an operator specifying information in which information specifying the worker is written. An employee ID card 80 to which an IC tag 81 is attached can be placed.

  When the IC tag reader / writer 15 confirms the communication with the work specifying IC tag 71 when the instruction 70 is placed on the IC tag place 15a, the IC tag reader / writer 15 reads the information of the work specifying IC tag 71 attached to the instruction 70. The communication start information with the work specifying IC tag 71 and the information specifying the work content of the work target article are transmitted via the control device 12. The communication start information means the work start information (information indicating the start of work) of the instruction 70.

  Further, when the IC tag reader / writer 15 confirms the disconnection of the communication with the work specifying IC tag 71 when the instruction 70 is removed from the IC tag place 15a, the IC tag reader for work specifying 71 via the control device 12 is confirmed. Communication end information and information for specifying the work content of the work target article. The communication end information means the work end information (information indicating the end of the work) of the instruction 70.

  The control device 12 displays information specifying the work content of the work target article received from the IC tag reader / writer 15 on the display device 14.

  Further, the control device 12 transmits work start information to the management server 20 (see step S203 in FIG. 4), and receives detailed instruction information from the management server 20 (see step S302 in FIG. 4). Detailed processing contents will be described later. Note that the instruction information includes a plurality of page screens performed by the operator based on the instruction 70.

  The control device 12 displays a page screen on the display device 14 based on the instruction information. The inspector confirms the displayed contents and issues a control command to the UPS 60 and the load tester 51 in accordance with the displayed inspection items. After completion of the test item, the inspector presses the switch 13 of the control soft key displayed on the display device 14. Then, the control device 12 transmits page work end information (information indicating the end of page work) to the management server 20. When the control device 12 receives the signal from the switch 13, the control device 12 displays the next page screen on the display device 14. Further, the control device 12 transmits page work end information to the management server 20 via the communication device 11.

  Here, the page work end information is transmitted to the management server 20 after completion of each inspection item according to the page screen. However, after all the test processes in one test facility area 50 are completed, the management server 20 May be sent to.

  The management server 20 can create various work performance tables according to requests from the management terminal MT connected to the network 90. The management terminal MT visualizes the work status by searching for the work results of the work process created by the processing unit 21 (for example, the work result collection unit 211) of the management server 20 and stored in the storage unit 22, by monitoring item. The terminal is used to analyze the cause of the cost. The management terminal MT may be a PC having a communication function.

  Although not shown, the measuring instrument 30 includes a processing unit, a storage unit, a display unit, and a communication unit, and can measure the power of the power supply line 52 in units of watts (W, effective power) in real time. As measurement items, voltage (V), current (A), apparent power (VA), frequency (Hz), power factor (PF), integrated power amount (kWh), and integrated time (H) can also be measured. The processing unit stores the measurement information in the storage unit. The processing unit transmits the measurement data stored in the storage unit to the management server 20 via the communication unit in association with the measurement device identification information every predetermined time. Depending on the line capacity of the network 90, the measurement data may be transmitted to the management server 20 in real time. The measuring instrument 30 can display the state of each measurement item on the display unit.

  In FIG. 1, it has been described that the work terminal 10 includes the communication device 11, the control device 12, the display device 14, and the like. However, the display device 14 is a tablet PC (Personal Computer), and the work of the tablet PC is performed. The functions of the communication device 11, the control device 12, and the display device 14 may be included as the terminal 10a (see FIG. 2).

  FIG. 2 is an external perspective view showing an example of a test facility area. The UPS 60 includes a UPS main body 61 and a storage battery unit 62. A power cable is connected to the UPS main body 61 from the power lead-in line 52 to the AC input unit, and a power cable is connected between the UPS main body 61 and the storage battery unit 62. Moreover, it connects to the load tester 51 through the power cable from the alternating current output part of the UPS main body 61. In the work terminal 10a, the UPS main body 61 and the storage battery unit 62 are connected by a control line and a measurement line.

  The UPS 60 shown in FIG. 2 is for a data center power supply, and is roughly for 500 kVA. More specifically, the AC input is a rated voltage of 415 V, a three-phase three-wire system, and the allowable voltage fluctuation range is within ± 10%. The AC output is a rated voltage of 415 V, a three-phase three-wire system, and the allowable voltage fluctuation range is within ± 5%. Depending on the size of the data center, UPS 60 can be connected in parallel to increase the power capacity.

  FIG. 3 is an explanatory diagram illustrating an example of an internal circuit of the UPS. The UPS main body 61 shown in FIG. 3 is of a constant inverter power supply system. The UPS main body 61 includes a converter 63 that converts alternating current into direct current, an inverter 64 that converts direct current into alternating current, a plurality of switches, and the like. In the description, the control of the switch is omitted.

  In normal times, the storage battery unit 62 is charged from the AC input via the converter 63 via the DC input, and output to the AC output via the inverter 64. At the time of an instantaneous power failure, the direct current input is output to the alternating current output via the inverter 64. When the UPS 60 is stopped, it is output from the AC input to the AC output via the bypass circuit 65. The UPS 60 also has a maintenance bypass circuit 66 for maintenance.

Next, the work record collection processing of the work management system S will be described with reference to FIG.
FIG. 4 is a flowchart showing work performance collection processing of the work management system. This will be described with reference to FIG. The worker in the work area first places the employee ID card 80 to which the worker identifying IC tag 81 (worker tag) is attached in the IC tag place 15a. Then, the IC tag reader / writer 15 determines whether or not the placement of the worker tag has been detected (step S201). When placement of the worker tag is detected (Yes in step S201), the process proceeds to step S202. When placement of the worker tag is not detected (No at Step S201), the process returns to Step S201. For example, when an inspector who is an operator takes charge of the work area in the morning of the day, the inspector may be placed during the morning of the day.

  When the worker starts the inspection of the UPS 60, the worker places the instruction 70 attached with the work identification IC tag 71 (instruction tag) on the IC tag place 15a installed on the upper part of the work table. Then, the IC tag reader / writer 15 determines whether or not the placement of the instruction tag has been detected (step S202). If placement of the instruction tag is detected (step S202, Yes), the process proceeds to step S203, where the instruction tag is placed. Is not detected (step S202, No), the process returns to step S202. Note that the order of the determinations in step S201 and step S202 may be reversed.

  The IC tag reader / writer 15 reads the instruction identification information from the work identification IC tag 71 and further reads the worker identification information from the worker identification IC tag 81, and generates work start information in the control device 12. (Step S203).

  The management server 20 records work start information in the storage unit 22 based on the received data (step S301).

  The management server 20 transmits the instruction information including the inspection instruction information of the instruction 70 (the work instruction screen corresponding to each page ID that is the page identification information) to the work terminal 10 (step S302).

  When receiving the instruction information, the control device 12 of the work terminal 10 displays a work instruction screen (page screen) for the first page (step S204).

  Then, the control device 12 of the work terminal 10 determines whether or not the switch 13 is pressed (step S205). When detecting that the switch 13 is pressed (step S205, Yes), the control device 12 transmits information about the end of page work to the management server 20 (step S206), and updates the work screen of the next page (step S207). ), The process returns to step S204.

  The management server 20 records page work end information in the storage unit 22 based on the received data (step S303).

  In step S205, when the control device 12 cannot detect the pressing of the switch 13 (No in step S205), the IC tag reader / writer 15 determines whether or not the removal of the instruction 70 can be detected from the IC tag place 15a (step S205). S208) When the removal of the instruction 70 is detected (step S208, Yes), the control device 12 transmits the communication end information (work end information) with the work specifying IC tag 71 to the management server 20 (step S208). S209), the process is terminated. On the other hand, when removal of the instruction 70 is not detected (step S208, No), the process returns to step S205.

  The management server 20 records work end information in the storage unit 22 based on the received data (step S304), and ends a series of processing.

  The relationship between the work start information and work end information recorded by the management server 20 and the measurement data of the measuring instrument 30 will be described with reference to FIG.

  FIG. 5 is an explanatory diagram showing work performance collection data recorded in the storage unit of the management server. This will be described with reference to FIG. A row 501 in FIG. 5 shows the results of measurement data obtained by the measuring instrument 30 of the test facility 1 (corresponding to the test facility area 50 of the UPS 1 in FIG. 1). A period during which the IC tag reader / writer 15 is placed, particularly a work start time and a work end time are shown. Similarly, the row 503 shows the results of measurement data by the measuring instrument 30 of the test facility 2 (corresponding to the test facility area 50 of the UPS 2 in FIG. 1), and the row 502 shows the instruction 70 of the work terminal 10 of the test facility 2. A period during which the IC tag reader / writer 15 is placed, particularly a work start time and a work end time are shown. A row 599 shows the power usage state of the entire test area (the entire inspection test site of the UPS 60).

In FIG. 5, for the sake of easy understanding, time is shown on the horizontal axis, and one grid of power used such as the rows 501 and 502 is the average power for 5 minutes. When looking at the amount of power, one cell is 500 (kW) x 300 (s) / 3600 (s / h) ≒ 41.7 kWh
It becomes.

  More specifically, when the instruction ID in the row 502 is UPS01001, the work is started at 9:45 and the work is finished at 10:35. With reference to the row 501, the power used at this time is from 500 kW to 1000 kW at the peak. When the instruction ID in the row 502 is UPS01002, the work is started at 10:50 and the work is finished at 10:35. With reference to the row 501, the power used at this time is from 500 kW to 1000 kW at the peak. When the instruction ID in the row 502 is UPS01003, the work is started at 12:45 and the work is finished at 13:35. With reference to the row 501, the power used at this time is from 500 kW to 1000 kW at the peak.

  When the instruction ID in the row 504 is UPS02001, the work is started at 9:50 and the work is finished at 10:40. As for the power used at this time, referring to the row 503, the power used is 0 kW. When the instruction ID in the row 504 is UPS02002, the work is started at 10:55 and the work is finished at 11:35. Referring to the row 503, the power used at this time is 1000 kW at the peak from 500 kW, but it can be seen that the duration of 1000 kW is long. If the instruction ID in the row 504 is UPS02003, it can be seen that the work started at 13:35 and is currently being tested. When the instruction ID is UPS02003, it can be seen that it is used for 10 minutes at 500 kW before the work starts.

  When monitoring demand with a contract with an electric power company, for example, the average usage power of electricity usage for 30 minutes from every hour on the hour, and 30 minutes from every hour on the hour, for the total power usage shown in row 599 (KW) may be calculated and monitored so as not to exceed the power consumption (30-minute demand value) every 30 minutes at the time of contract.

  FIG. 6 is an explanatory diagram illustrating an example of a work performance collection result. The work result collection result data table 25 summarizes the work contents for each instruction 70 and is stored in the storage unit 22 of FIG. The data table 25 includes items such as instruction ID, work start time, work end time, work time, place ID, worker ID, and related measurement ID.

  More specifically, line 251 indicates a case where the instruction ID is UPS01001, and the work starts at 9:45 and ends at 10:35. It can be seen that the work time is 50 minutes, the work place ID is L0001, and the worker ID is M0001. Further, the related measurement ID is D0001, and when a corresponding cell in the data table 25 is clicked, a performance chart by the measuring instrument 30 having the instruction ID UPS001001 shown in FIG. 5 is displayed. The performance chart may be a chart within a predetermined time including the work end time from the work start time of the corresponding instruction 70. Thereby, the use results before and after the corresponding work can also be grasped.

  When the management server 20 displays FIG. 6 on the display unit of the management terminal MT, when the measurement value is found to be abnormal, the management server 20 notifies the corresponding cell of the data table 25 by blinking or the like. . For example, when the administrator clicks on the cell 258 in the row 252 in FIG. 6, a performance chart by the measuring instrument 30 whose instruction ID is UPS02001 in the row 503 in FIG. 5 is displayed, and it can be seen that power is not used. When the administrator clicks the cell 259 in the row 256 in FIG. 6, a performance chart by the measuring instrument 30 whose instruction ID is UPS02003 in the row 503 in FIG. 5 is displayed, and the power is used before the work starts. I understand that.

  The data table 25 in FIG. 6 may include, as the energy basic unit information, the amount of electric power used, the peak value, and the like that become the actual unit conversion actual value for each instruction 70. Specifically, when the processing unit 21 receives an operation processing instruction for a work cost generated in the work process or when the work of the instruction 70 is completed, the work starts for each instruction 70 based on the measurement data. It is preferable to calculate the amount of power (the amount of power used) from the time to the work end time, a peak value, and the like, and register the amount of power, the peak value, etc. calculated in association with the work time.

  The processing unit 21 of the management server 20 may notify the management terminal MT that there is a problem in the work content when the calculated power consumption is not within a predetermined range for the calculated work time. In addition, when the processing unit 21 of the management server 20 uses power in a time zone other than the work time zone based on the work start time and the work end time, the processing unit 21 notifies the management terminal MT that the work content is defective. Good.

  By notifying that there is a defect in the work content as described above, the administrator can quickly know the abnormality of the work content.

<< Embodiment 2 >>
FIG. 7 is a configuration diagram showing a work management system according to the second embodiment of the present invention. The configuration shown in FIG. 7 is a case where a load switch 31 is provided in the configuration shown in FIG. The ON / OFF command (loading command / shutoff command) of the load switch 31 is interlocked with the placement and removal of the IC tag reader / writer 15 in the instruction 70. As a result, it is possible to more accurately manage the usage amount of power, which is basic unit information necessary for the product. The description of the same parts as those in FIG. 1 is omitted.

  When the IC tag reader / writer 15 confirms the communication with the work specifying IC tag 71 when the instruction 70 is placed on the IC tag place 15a, the IC tag reader / writer 15 reads the information of the work specifying IC tag 71 attached to the instruction 70. The communication start information with the work specifying IC tag 71 and information for specifying the work content of the work target article are transmitted to the management server 20 via the control device 12. Note that the communication start information includes identification information of the work terminal 10.

  When receiving the communication start information from the work terminal 10, the management server 20 issues an ON command to the load switch 31 corresponding to the received work terminal 10.

  Further, when the IC tag reader / writer 15 confirms the disconnection of the communication with the work specifying IC tag 71 when the instruction 70 is removed from the IC tag place 15a, the IC tag reader for work specifying 71 via the control device 12 is confirmed. Communication end information and information for specifying the work content of the work target article are transmitted to the management server 20. Note that the communication end information includes identification information of the work terminal 10.

  When receiving the communication end information from the work terminal 10, the management server 20 issues an OFF command to the load switch 31 corresponding to the received work terminal 10.

  FIG. 8 is an explanatory diagram illustrating work performance collection data recorded in the storage unit of the management server according to the second embodiment. 8 will be described with respect to differences from FIG.

  More specifically, when the instruction ID in the row 502 is UPS01001, the work is started at 9:45, and at that time, the load switch 31 is instructed to be turned ON. Similarly, the work is finished at 10:35, and at that time, the load switch 31 is instructed to be OFF. When the instruction 70 is not placed on the IC tag reader / writer 15, the load switch 31 is in the cut-off state, so that the power used for the inspection work can be strictly managed. That is, when the instruction ID in the row 504 is UPS02003, the work is started at 13:35, but power is not used before the work is started (see reference numeral 503a).

  The work management system S according to the present embodiment collects work results and opens and closes a management server 20 that manages the work results and a work target item (eg, UPS 60) arranged in the work area (eg, test facility area 50). A measuring instrument 30 that measures the power supplied via a device (for example, a load switch 31) and transmits the measured measurement data to the management server 20; An IC tag reader (for example, for reading the information of the IC tag placed in the IC tag place 15a attached to the IC tag place 15a in which the work specifying IC tag 71 in which information for identifying the work content of the article is written is placed. IC tag reader / writer 15) and work terminal 10 having control device 12 for transmitting information read by the IC tag reader to management server 20.

  When the instruction 70 attached with the work specifying IC tag 71 is placed on the IC tag place 15a, the work terminal 10 confirms communication with the work specifying IC tag 71 and notifies the management server 20 that the work starts. When the instruction 70 placed is removed from the IC tag place 15a and the communication with the work specifying IC tag 71 is confirmed to be disconnected, the management server 20 is notified of the end of the work.

  When the processing unit 21 of the management server 20 receives a notification to start work from the work terminal 10, it issues an input command to the switch (for example, the load switch 31), and notifies the work terminal 10 that work has been completed. When receiving the command, command the switch to shut off. The processing unit 21 of the management server 20 records measurement data from the measuring instrument 30 in the storage unit 22. When receiving the notification from the work terminal 10, the processing unit 21 of the management server 20 determines the work start time for each instruction 70 based on the time included in the notification that the work is started, and sets the work end time as the work end time. The work start time and the work end time are recorded in the storage unit 22 for each instruction 70 based on the time included in the notification of the end. When the work for each instruction 70 is completed, the processing unit 21 of the management server 20 calculates the work time based on the work start time and the work end time recorded in the storage unit 22, and the work start time based on the measurement data. Can be calculated and the calculated working time can be associated with the calculated used power and registered in the storage unit 22.

  In the present embodiment, power (or power) has been described as an energy resource necessary for manufacturing, but the present invention is not limited to this. There are various types of energy resources necessary for manufacturing, such as gas, fuel, and water. Similarly, it is preferable to manage the energy used by the management server 20.

  Specifically, the energy management system collects work results, measures energy supplied to the management server 20 that manages the work results, and work target articles arranged in the work area, and measures the measured data. Is attached to the IC tag place 15a where the measuring device 30 for transmitting the information to the management server 20 and the work specifying IC tag 71 in which information for specifying the work content of the work object is written are placed. And an IC tag reader that reads information on the IC tag placed in the IC tag place 15a, and a work terminal 10 that has a control device 12 that transmits the information read by the IC tag reader to the management server 20.

  When the instruction 70 attached with the work specifying IC tag 71 is placed on the IC tag place 15a, the work terminal 10 confirms communication with the work specifying IC tag 71 and notifies the management server 20 that the work starts. When the instruction 70 placed is removed from the IC tag place 15a and the communication with the work specifying IC tag 71 is confirmed to be disconnected, the management server 20 is notified of the end of the work.

  The processing unit 21 of the management server 20 records the measurement data from the measuring instrument 30 in the storage unit 22, and when receiving a notification from the work terminal 10, sets the work start time for each instruction 70 to indicate the start of work. The work end time is determined based on the time included in the notification, the work end time is determined based on the time included in the work end notification, and the work start time and the work end time are recorded in the storage unit 22 for each instruction 70. When the work for each instruction 70 is completed, the processing unit 21 of the management server 20 calculates the work time based on the work start time and the work end time recorded in the storage unit 22, and the work start time based on the measurement data. The amount of energy supplied from the time until the work end time is calculated, and the energy consumption basic unit required for the work of the instruction 70 is calculated by dividing the energy amount by the work time, and the calculated work time and the calculated The energy consumption basic unit can be associated and registered in the storage unit 22.

  In the present embodiment, the processing unit 21 of the management server 20 records the measurement data from the measuring instrument 30 in the storage unit 22, and when receiving notification from the work terminal 10, sets the work start time for each instruction 70. Based on the time included in the notification of work start, the work end time is determined based on the time included in the notification of work end, and the work start time and work end time are stored for each instruction 70 in the storage unit 22. To record. The processing unit 21 of the management server 20 has been described as calculating the work time based on the work start time and the work end time recorded in the storage unit 22 when the work for each instruction 70 is finished. It is not limited.

  FIG. 9 is an explanatory diagram showing a work record collection method of the work management system. This will be described with reference to FIG. It is necessary to consider various methods for the operation method of the administrator. FIG. 9A shows the method shown in the first and second embodiments. The worker places the instruction 70 on the IC tag place 15a at the start of work and maintains the state during the work. This is a method of removing the instruction 70 from the IC tag place 15a at the end. On the other hand, FIG. 9B shows a method (touch and go style method) of repeatedly placing and removing the instruction 70 on the IC tag place 15a at the start and end of work.

  In the touch-and-go style method shown in FIG. 9B, the work terminal 10 manages the communication after confirming communication with the work specifying IC tag 71 when the instruction 70 is placed on the IC tag place 15a. A notification indicating the start of communication is transmitted to the server 20, and a communication end notification is transmitted to the management server 20 when communication with the work specifying IC tag 71 is interrupted. When receiving the notification from the work terminal 10, the management server 20 stores the communication start time included in the communication start notification or the communication end time included in the communication end notification in the storage unit 22 for each instruction 70. Record. When there are a plurality of communication start times and communication end times in the same instruction ID, the management server 20 calculates the work time using the first communication start time as the work start time and the last communication end time as the work end time. Good. Specifically, also in the case of FIG. 9B, the work start time is 9:45, the work end time is 10:35, and the work time is 50 minutes. This is the same as the example shown in the row 251 of FIG.

  FIG. 10 is an explanatory diagram illustrating work performance collection data of work by process recorded in the storage unit of the management server. The work by process corresponds to the page work related to the processing of the work management system S shown in FIG. In FIG. 10, the test-specific work is taken as an example of the process-specific work and will be described with reference to FIGS. 1 and 4 as appropriate.

  FIG. 10A shows test items 1 to 6 and measurement data (wattmeter data) measured by the measuring instrument 30 of the test facility 1 (corresponding to the test facility area 50 of the UPS 1 in FIG. 1) as work by test. The relationship is shown. The worker in the work area first places the employee ID card 80 to which the worker identifying IC tag 81 (worker tag) is attached in the IC tag place 15a. Further, when starting the inspection of the UPS 60, the worker places an instruction 70 to which an IC tag 71 for operation identification (instruction tag) is attached in the IC tag place 15a installed on the upper part of the work table. Then, the IC tag reader / writer 15 determines whether or not placement of the instruction tag has been detected (step S202). If placement of the instruction tag is detected (Yes in step S202), the IC tag reader for work identification 71 The instruction identification information is read, and further, the worker identification information is read from the worker specifying IC tag 81, and the control device 12 generates work start information and transmits it to the management server 20 (step S203).

  The management server 20 records work start information in the storage unit 22 based on the received data (step S301).

  The management server 20 transmits the instruction information including the inspection instruction information of the instruction 70 (the work instruction screen corresponding to each page ID which is the page identification information (management identification information of the work process)) to the work terminal 10 (step S302). . When receiving the instruction information, the control device 12 of the work terminal 10 displays the test-specific work diagram 1 which is the work instruction screen for the first page (step S204).

  Then, the control device 12 of the work terminal 10 determines whether or not the switch 13 is pressed (step S205). When detecting that the switch 13 is pressed (step S205, Yes), the control device 12 transmits information on the completion of the page work to the management server 20 (step S206), and the test-specific work diagram 2 which is the work screen of the next page. Is updated (step S207), and the process returns to step S204.

  The management server 20 records page work end information in the storage unit 22 based on the received data (step S303).

  In step S205, when the control device 12 cannot detect the pressing of the switch 13 (No in step S205), the IC tag reader / writer 15 determines whether or not the removal of the instruction 70 can be detected from the IC tag place 15a (step S205). S208) When the removal of the instruction 70 is detected (step S208, Yes), the control device 12 transmits the communication end information (work end information) with the work specifying IC tag 71 to the management server 20 (step S208). S209), the process is terminated. On the other hand, when removal of the instruction 70 is not detected (step S208, No), the process returns to step S205.

  The management server 20 records work end information in the storage unit 22 based on the received data (step S304), and ends a series of processing.

  When the switch 13 is pressed at the end of each test item, a time stamp can be acquired, and the work time can be managed for each work by test. Note that the last test item (for example, test item 6 in FIG. 10) can manage the work time by the time stamp included in the work end information in step S209.

  On the other hand, the management server 20 acquires wattmeter data 101 by the measuring instrument 30 of the test facility 1.

  FIG. 10B shows the relationship between the individual energy information for each test item and the overall energy information for the test. The processing unit 21 of the management server 20 starts the work start time based on the measurement data that is the entire test energy information 103 (see the lower diagram of FIG. 10B) for each order 70 when the work of the order 70 is completed. The amount of electric power (integrated value), the peak power value (Peak Load), the minimum power value (Min), the average power value (Ave), etc. are calculated and registered in association with the work time. This is a test basic unit for each instruction 70.

  Further, the processing unit 21 of the management server 20 is based on the measurement data that is the test item individual energy information 102 (see the upper diagram of FIG. 10B) included in the instruction 70 when the work of the instruction 70 is completed. For each test item, an electric energy (integrated value), an electric power peak value (Peak Load), an electric power minimum value (Min), an electric power average value (Ave), and the like are calculated and registered in association with the work time. This is the test unit for each test item.

  In this way, the management server 20 can collect the test item individual energy information 102 and the entire test energy information 103, and can total the actual unit of energy consumption obtained during the actual test (reference numeral 104). The basic unit DB 105 can be registered in the storage unit 22.

  FIG. 11 is an explanatory diagram showing test items of a formal test for UPS performance characteristics. FIG. 12 is an explanatory diagram showing test items of the UPS factory attendance test. Although FIG. 10 has been described as test item 1 to test item 6, an example of a UPS 60 test item will be specifically described.

  The test items in FIG. 11 and FIG. 12 are test items in the industry standard based on JIS4411-3. Item numbers 01 to 36 shown in FIG. 11 are test items for the UPS performance characteristic type test, and item numbers 37 to 67 shown in FIG. 12 are test items for the UPS factory attendance test. Tests that differ greatly in the amount of power consumed (power consumption) among the test items include the following.

  For example, in the output tests of No. 07 to No. 10 in FIG. 11, the amount of power consumption differs depending on whether there is no load or full load. Further, since the output characteristic tests of Nos. 13 and 14 are tests in which a resistance load exceeding the full load rating is applied during normal operation, the power consumption is further different. Further, since the operation state of the UPS 60 may be switched to bypass power feeding, the power consumption is different. The rapid load change test of Item No. 24 applies a load corresponding to an effective component of 100% load using two types of loads consisting of 20% and 80% while the UPS 60 is operating. While the UPS 60 is operating at a 20% load, an 80% load is applied at the peak point of the output power waveform. Next, 80% load is cut off and the load is rapidly reduced to 20%. For this reason, according to load fluctuation | variation, the amount of power consumption changes with the fluctuation | variation of an electric power peak value.

  Item numbers 37 to 45 in FIG. 12 are routine tests. The routine test is a test performed before shipment for each UPS 60 or UPS functional unit (when shipped separately as a UPS functional unit) in order to confirm that it conforms to the standard. A test is performed. Among them, for example, the AC input power failure test of item No. 41 and the AC input power recovery test of item No. 42 cut off and turn on the AC input, and thus the power consumption greatly varies.

  Although description of other item numbers is omitted, since the power consumption and the like differ for each test item, acquiring the test item individual energy information 102 (see FIG. 10) is necessary for evaluating the power demand prediction in the production plan. It becomes important in.

  The work terminal 10 of the present embodiment further includes a display device 14 that displays work instructions according to the work process of the instruction 70 received from the management server 20, and a switch for the operator to switch the work process displayed on the display device 14. When the control device 12 detects the operation of the switch 13, the control device 12 associates the management identification information of the work process with the time when the operation of the switch 13 is detected, and transmits it to the management server 20 as work performance information. The processing unit 21 of the management server 20 can record the work record information in the storage unit 22 when the work record information is received.

  When the work for each instruction 70 is completed, the processing unit 21 of the management server 20 calculates the work time from the time detected based on the work performance information recorded in the storage unit 22 to the next detected time, and measures the work time. The power used from the time detected based on the data to the next detected time is calculated, and the calculated work time and the calculated power used are registered in the storage unit 22 in association with the management identification information of the work process. be able to.

  In the energy management system of the present embodiment, the work terminal 10 further displays the work instruction according to the work process of the instruction 70 received from the management server 20 and the work process displayed on the display apparatus 14 as the worker. When the switch 13 detects the operation of the switch 13, the control device 12 associates the management identification information of the work process with the time when the operation of the switch 13 is detected and manages it as work performance information. When the processing unit 21 of the management server 20 receives the work result information, the work result information can be recorded in the storage unit 22.

  When the work for each instruction 70 is completed, the processing unit 21 of the management server 20 calculates the work time from the time detected based on the work performance information recorded in the storage unit 22 to the next detected time, and measures the work time. Calculate the amount of energy supplied from the detected time to the next detected time based on the data, and divide the calculated energy amount by the calculated work time. The energy consumption basic unit can be calculated, and the calculated work time of the work process and the calculated energy consumption basic unit of the work process can be registered in the storage unit 22 in association with the work process.

Next, the work process management process of the work management system S will be described with reference to FIG.
FIG. 13 is a flowchart showing the rearrangement of work processes based on the power usage limit value. This will be described with reference to FIG. When the administrator inputs the power limit value of the entire inspection test site of the UPS 60 within a predetermined period from the management terminal MT, the management server 20 (the work process management unit 212 of the processing unit 21) performs a plurality of tests scheduled for the test. A power limit value within a predetermined period for each test facility area 50 is calculated within a range that does not exceed the overall power usage limit value of the facility area 50 (step S131). Then, the processing unit 21 of the management server 20 reads work performance collection data (test item individual energy information 102 in FIG. 10B) for each of a plurality of work processes included in the instruction 70 of the target test facility area 50. (Step S132).

  The management server 20 rearranges (rearranges) a plurality of work processes within a range not exceeding the power limit value within the predetermined period calculated in step S131 (step S133), and each work after the rearrangement It is determined whether or not the used power scheduled in the process is within the power limit value (step S134). If there is a time zone that exceeds the power limit value (No at Step S134), the management server 20 adjusts the start time of the corresponding work process (Step S135), and returns to Step S134. If it is below the power limit value in all work processes (step S134, Yes), the management server 20 ends the process reordering process.

  FIG. 14 is an explanatory diagram showing rearrangement of work processes based on the power usage limit value. FIG. 14A shows the test item individual energy information 102 registered in the storage unit 22 of the management server 20, and corresponds to the upper diagram of FIG.

  FIG. 14B shows the relationship between the power usage limit value and the planned power usage in the work process shown in FIG. When the work steps are performed in the order of test item 1, test item 2, test item 3,..., Test item 6, it can be seen that the power usage limit value is exceeded in the work step of test item 3. The power usage limit value is also referred to as a power usage limit pattern.

  In FIG. 14C, the work processes are rearranged in order of test item 3, test item 2, test item 5, test item 4, test item 6, and test item 1 so as to be within the power usage limit value. ). In this embodiment, since a consumption pattern that is an energy consumption basic unit can be acquired in advance for each work process for the test item that is a work process, an energy use limit value that is a power use limit value using the consumption pattern. Reordering can be performed to fit within.

  The amount of energy required for the entire work shown in FIG. 14B and FIG. 14C is the same, but the power usage restriction pattern can be satisfied by changing the order of the work steps.

  FIG. 14 (d) shows the rearrangement of the test work diagram accompanying the rearrangement of FIG. 14 (c). FIG. 14D shows the order of the work charts by test specified by the instruction 70. In the work terminal 10, when the operator places the instruction 70 on the IC tag place 15 a at the start of work, the work chart 3 by test, the work chart 2 by test, the work chart 5 by test, the work chart 4 by test, and the work by test This means that the data are displayed on the display device 14 in the order of FIG.

  Since the assembly-specific evaluation is performed in the process chart for each assembly process, changing the assembly order deteriorates the work efficiency. On the other hand, in the inspection-specific work diagram for inspection, the inspection confirmation item (see FIGS. 11 and 12) can be advanced for each function of function inspection and performance inspection. For this reason, it is possible to replace the work charts for each test as shown in FIG.

  FIG. 15 is an explanatory diagram illustrating adjustment of rearrangement of work processes based on the power usage limit value. FIG. 15 shows the rearrangement of work processes based on the power usage limit value as in FIG. 14, but the power usage limit value (power usage limit pattern) in FIG. 15 (b) is shown in FIG. 14 (b). This is different from the power usage limit value (power usage limit pattern). FIG. 15B assumes a case where the administrator imposes a power usage restriction in a time zone where the unit price of electricity is high.

  For example, in the peak shift plan proposed by the electric power company, the unit price of power consumption is set in three time zones in the summer (July to September) and in two time zones in the other seasons (October to June). Specifically, in the summer season (July to September), the night time (11 pm to 7 am) is 9.17 yen, daytime (7 am to 1 pm, 4 pm to 11 pm) ) Is 26.53 yen, and the peak time (from 1 pm to 4 pm) is 44.60 yen. The fact is that the charges during peak hours are significantly higher. In such a case, it is possible to contribute to the reduction of the manufacturing cost of the product by reducing the power consumption in the peak time zone as much as possible.

  In the case of the power usage limit value shown in FIG. 15B, when the work process is performed in the order of test item 1, test item 2, test item 3,..., Test item 6, the work of test item 3 and test item 4 is performed. It can be seen that the power usage limit value is exceeded in the process.

  FIG. 15 (c) shows the rearrangement of work processes in the order of test item 3, test item 2, test item 5, test item 4, test item 6 and test item 1 so as to be within the power usage limit value (rearrangement). ) And an example in which the start time of the work process is adjusted. In this embodiment, immediately after the work process of the test item 5 is completed, the work process of the test item 4 is not started, but the start time is delayed.

  FIG. 15 (d) shows the rearrangement of the test work chart accompanying the rearrangement of FIG. 15 (c). In FIG. 15D, as in FIG. 14D, the order of the test-specific work diagrams instructed by the instruction 70 is the same, but the start time (see the balloon) is shown as a note in the test-specific work diagram 4. Is clearly stated.

  The energy management system according to the present embodiment includes a management server 20 that manages work processes, a display device 14 that is installed in a work place and displays work processes received from the management server 20, and the work processes displayed on the display device 14. A switch 13 for switching by an operator, and a control device 12 for associating the time when the operation of the switch 13 is detected with management identification information (for example, page ID) of the work process and transmitting it to the management server 20 as work performance information. And a measuring device 30 that measures the energy supplied to the work target article placed at the work place and transmits the measured measurement data to the management server 20.

  Based on the received work performance information and measurement data, the management server 20 calculates the power consumption per unit time as the energy consumption basic unit for each management process management identification information, and calculates the work time of the work process. Then, when it is registered in the storage unit 22 and the limit value of energy use within a predetermined period is received, the energy use within the predetermined period based on the energy consumption basic unit and the work time for each management identification information of the work process The work processes can be rearranged so as to satisfy the limit value.

  When detecting the operation of the switch 13, the control device 12 of the work terminal 10 associates the management identification information of the work process with the time when the operation of the switch 13 is detected, and transmits it to the management server 20 as work end information. Upon receiving the work end information, the server 20 records the work end information in the storage unit 22, from the time included in the immediately preceding work end information stored in the storage unit 22 to the time included in the work end information received this time. The working time is calculated, the power used from the time included in the immediately preceding work end information to the time included in the work end information received this time is calculated based on the measurement data, and the calculated work time and the calculated use are calculated. The electric power can be registered in the storage unit 22 in association with the management identification information of the work process. This makes it possible to accurately grasp the work time, power consumption, etc. for each work process.

DESCRIPTION OF SYMBOLS 10 Work terminal 11 Communication apparatus 12 Control apparatus 13 Switch 14 Display apparatus 15 IC tag reader / writer 15a IC tag place 20 Management server 21 Processing part 22 Memory | storage part 25 Data table 30 Measuring instrument 31 Load switch 40 Instruction issuing terminal 41 Instruction issuing part 42 Tag issuing department 50 Test equipment area (working place)
51 Load tester 52 Power lead-in wire 60 UPS (work object)
61 UPS Main Unit 62 Storage Battery Unit 63 Converter 64 Inverter 65 Bypass Circuit 66 Maintenance Bypass Circuit 70 Instruction 71 Work Identification IC Tag 80 Employee ID 81 Worker Identification IC Tag 90 Network 101 Power Meter Data 102 Test Item Individual Energy Information 103 Overall Test Energy information S Work management system MT management terminal

Claims (7)

A management server for managing work processes;
A display device that is installed at a work place and displays the work process received from the management server, a switch for the operator to switch the work process displayed on the display device, a time when an operation of the switch is detected, and the A work terminal having a control device for associating management identification information of a work process and sending it to the management server as work result information;
Measuring the power supplied to the work object placed in the work place, and measuring instrument that transmits the measured measurement data to the management server,
The management server
Based on the received work performance information and the measurement data, register the power consumption and work time per unit time for each management identification information of the work process in the storage unit,
When receiving a power usage limit value within a predetermined period, based on the power usage and the work time for each management identification information of the work process, so as to satisfy the power usage limit value within the predetermined period, A work management system comprising rearranging the work processes. The management server rearranges the work processes, and then sends information on the rearranged work processes to the work terminal when the work terminal receives a work start instruction for work contents including the same work process. The work management system according to claim 1, wherein: The work management system according to claim 1, wherein the work process is a work process related to a product certification process. When the control device of the work terminal detects the operation of the switch, the management identification information of the work process and the time when the operation of the switch is detected are associated with each other and transmitted to the management server as work end information,
When the management server receives the work end information, the management server records the work end information in the storage unit, and the work end information received this time from a time included in the work end information immediately before being recorded in the storage unit. The working time until the time included in the work is calculated, the power used from the time included in the previous work end information to the time included in the work end information received this time is calculated based on the measurement data, and the calculation is performed. The work management system according to claim 1, wherein the calculated work time and the calculated power consumption are registered in the storage unit in association with management identification information of the work process. The work terminal further includes:
An IC tag reader that reads the information of the IC tag placed in the IC tag place, attached to the IC tag place where the work identifying IC tag in which information for identifying the work content of the work target article is written,
The work terminal notifies the management server of the start of work upon confirming communication with the work specifying IC tag when the instruction attached with the work specifying IC tag is placed on the IC tag place. And, when the instructions placed above are removed from the IC tag place, confirming the disconnection of the communication with the work identification IC tag notifies the management server of the end of work,
When receiving the notification from the work terminal, the management server determines a work start time based on a time included in the work start notification for each instruction, and sets a work end time as the work end time. The work start time and the work end time are recorded in the storage unit for each instruction, and when the work for each instruction is completed, the work start recorded in the storage unit is started. The work time is calculated based on the time and the work end time, the power used from the work start time to the work end time is calculated based on the measurement data, and the calculated work time and the calculated power usage are calculated. The work management system according to claim 1, wherein the work management system is associated and registered in the storage unit. A management server for managing work processes;
A display device installed at a work place and displaying the work process received from the management server; a switch for the operator to switch the work process displayed on the display device; and a time when an operation of the switch is detected; A work terminal having a control device for associating management identification information of the work process and sending it to the management server as work result information;
A measuring instrument that measures energy supplied to the work target article arranged in the work place, and transmits the measured measurement data to the management server,
The management server
Based on the received work performance information and the measurement data, for each management identification information of the work process, the power consumption per unit time is calculated as an energy consumption basic unit, and the work time of the work process is calculated. Registered in the storage unit,
When the limit value of energy use within a predetermined period is received, the limit value of energy use within the predetermined period is satisfied based on the energy consumption basic unit and the work time for each management identification information of the work process As described above, an energy management system characterized by rearranging the work processes. When the control device of the work terminal detects the operation of the switch, the management identification information of the work process and the time when the operation of the switch is detected are associated with each other and transmitted to the management server as work end information,
When the management server receives the work end information, the management server records the work end information in the storage unit, and the work end information received this time from a time included in the work end information immediately before being recorded in the storage unit. The working time until the time included in the work is calculated, the power used from the time included in the previous work end information to the time included in the work end information received this time is calculated based on the measurement data, and the calculation is performed. The energy management system according to claim 6, wherein the calculated work time and the calculated power consumption are registered in the storage unit in association with management identification information of the work process.

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