JP7081436B2 - Information processing equipment, process information collection method and process information collection program - Google Patents

Description

This case relates to an information processing device, a process information collection method, and a process information collection program.

The production line and the like are divided into a plurality of processes. In such a production line, there is a demand for quickly and easily grasping the entry / exit time of each process. Therefore, it is considered to apply a technique using a transmitter and a receiver (for example, Patent Documents 1 to 3) to a production line.

Japanese Unexamined Patent Publication No. 2006-215690 Japanese Unexamined Patent Publication No. 2010-097463 Japanese Unexamined Patent Publication No. 2002-073749

However, since receivers are expensive, a technique capable of reducing the number of receivers is desired.

In one aspect, the present invention aims to provide an information processing apparatus, a process information collection method, and a process information collection program capable of reducing the number of receivers.

In one embodiment, the information processing apparatus is a receiver installed at a position corresponding to each of the plurality of processes, and is a first receiver that receives a radio wave of a first transmitter provided in a product passing through the plurality of processes. An acquisition unit for acquiring the time and a second reception time for receiving the radio wave of the second transmitter which is provided in the product and has a shorter radio wave reach than the first transmitter, and the acquisition unit acquired by the acquisition unit. A calculation unit for calculating the entry time and the exit time of the plurality of steps from the first reception time and the second reception time is provided.

The number of receivers can be reduced.

It is a figure which illustrates the work area of each process. (A) and (b) are diagrams illustrating the reception of each receiver. (A) and (b) are diagrams illustrating the reception of each receiver. (A) and (b) are diagrams illustrating the reception of each receiver. (A) is a block diagram illustrating the overall configuration of the process information collection system according to the first embodiment, and (b) is a block diagram for explaining the hardware configuration of the information processing apparatus. (A) and (b) are diagrams illustrating the reception of each receiver. (A) and (b) are diagrams illustrating the reception of each receiver. (A) and (b) are diagrams illustrating the reception of each receiver. It is a figure which illustrates the reception of each receiver. It is a figure which illustrates the time when the beacon ID1 and the beacon ID2 are received by each receiver. It is a figure which illustrates the installation position of the receiver when each receiver is installed at different intervals. It is a figure which illustrates the installation position of the receiver when each receiver is installed at equal intervals. (A) is a diagram illustrating setting information, (b) is a diagram illustrating association information, (c) is a diagram illustrating a process master, and (d) is a diagram illustrating beacon passage information. It is a figure. (A) and (b) are diagrams illustrating the accumulation of the relationship between the beacon ID received by each receiver and the time. It is a figure which illustrates the procedure which calculates the start time and the end time of each process from the beacon passage information. It is a figure which illustrates the flowchart which shows the process time determination process. It is a figure which illustrates the corrected start time and end time of each process. It is a figure which illustrates the flowchart which shows the process time determination process in the case where each receiver is installed at equal intervals of the interval L. (A) is a diagram illustrating the setting information, and (b) is a diagram illustrating the corrected start time and end time of each process. It is a figure exemplifying another example of a process information collection system.

Prior to the description of the embodiment, the production line will be described. In the production line, each process related to product assembly is sequentially performed in each work area on the line. For example, a process of fixing a part to a base, a process of inspecting a product, and the like are performed in each work area.

As illustrated in FIG. 1, parts are mounted in the work area of step X. The product for which step X is completed is passed to the work area of step Y. In the work area of step Y, the housing is assembled. The product for which step Y is completed is passed to the work area of step Z. A visual inspection is performed in the work area of step Z.

In product assembly, there is a demand to quickly and easily grasp the entry / exit time of each process. Therefore, as illustrated in FIG. 2A, the beacon BC is attached to the product flowing on the production line, and a plurality of receivers r1 to r3 are arranged at regular intervals. Since the radio wave reachable distance of the beacon BC is known in advance, it can be seen that the beacon BC is approaching a place separated by the radio wave reachable distance from the receiver at the time when the receiver receives the radio wave from the beacon BC. .. Therefore, by determining the position of the receiver so that each receiver can receive radio waves when the beacon BC moves to the start position of each process and the end position of each process, the entry time (start time) of each process is set. ) And the departure time (end time) can be obtained. If the start time and end time of each process can be acquired, the process time required for each process can be acquired.

As illustrated in FIG. 2B, the time when the receiver r1 receives the radio wave of the beacon BC is defined as t1. Time t1 is the start time of process X. As illustrated in FIG. 3A, the time when the receiver r2 receives the radio wave of the beacon BC is defined as t2. Time t2 is the end time of process X. In this case, the process time of the process X is (t2-t1). As illustrated in FIG. 3B, it is assumed that the next step Y is started at the time t2. That is, the time t2 is the end time of the process X and the start time of the process Y.

Similarly, as illustrated in FIG. 4A, the time when the receiver r3 receives the radio wave of the beacon BC is defined as t3. Time t3 is the end time of step Y. In this case, the process time of the process Y is (t3-t2). Similarly, it is assumed that the next step Z is started at the time t3. That is, the time t3 is the end time of the process Y and the start time of the process Z. Similarly, as illustrated in FIG. 4B, the time when the receiver r4 receives the radio wave of the beacon BC is defined as t4. Time t4 is the end time of process Z. In this case, the process time of process Z is (t4-t3).

If you want to know the entry / exit time of each process in detail, you will have to install many receivers. Generally, the price of the receiver is higher than that of the transmitter. Therefore, as the number of receivers increases, the cost required for system construction increases. Therefore, in the following examples, an information processing device, a process information collection method, and a process information collection program that can reduce the number of receivers will be described.

FIG. 5A is a block diagram illustrating the overall configuration of the process information collection system 100 according to the first embodiment. As illustrated in FIG. 5A, the process information collection system 100 includes a first beacon 10, a second beacon 20, a plurality of receivers r1', r2'... rn', an information processing device 30, and the like. The information processing apparatus 30 functions as an acquisition unit 31, a setting storage unit 32, a process master storage unit 33, a linking information storage unit 34, a passage information storage unit 35, a calculation unit 36, a process time storage unit 37, and the like.

FIG. 5B is a block diagram for explaining the hardware configuration of the information processing apparatus 30. As illustrated in FIG. 5B, the information processing device 30 includes a CPU 101, a RAM 102, a storage device 103, a display device 104, and the like. Each of these devices is connected by a bus or the like. The CPU (Central Processing Unit) 101 is a central processing unit. The CPU 101 includes one or more cores. The RAM (Random Access Memory) 102 is a volatile memory that temporarily stores a program executed by the CPU 101, data processed by the CPU 101, and the like. The storage device 103 is a non-volatile storage device. As the storage device 103, for example, a ROM (Read Only Memory), a solid state drive (SSD) such as a flash memory, a hard disk driven by a hard disk drive, or the like can be used. The display device 104 is a liquid crystal display, an electroluminescence panel, or the like, and displays a processing result of the information processing device 30 or the like. Each part of the information processing apparatus 30 is realized by the CPU 101 executing the information collection program stored in the storage apparatus 103. Each part of the information processing apparatus 30 may be a dedicated circuit.

The first beacon 10 is a beacon having a wide transmission range. The second beacon 20 is a beacon having a narrower transmission range than the first beacon. That is, the first beacon 10 is a beacon having a long radio wave reach, and the second beacon 20 is a beacon having a shorter radio wave reach than the first beacon 10. The first beacon 10 and the second beacon 20 are included in one product. For example, the first beacon 10 and the second beacon 20 are affixed to one component included in the final product. Alternatively, the first beacon 10 and the second beacon 20 are attached to a plurality of parts incorporated in the final product, respectively. Alternatively, the first beacon 10 and the second beacon 20 are attached to a tray or the like in which parts are housed. As described above, the first beacon 10 and the second beacon 20 are related to one product and are attached to any of the objects flowing simultaneously on the production line.

Since there is a difference between the radio wave reachable distance of the first beacon 10 and the radio wave reachable distance of the second beacon 20, the time when the radio wave is received from the first beacon 10 in the process of moving the product, There is a difference from the time when the radio wave is received from the second beacon 20. The radio waves transmitted by the first beacon 10 and the second beacon include a beacon ID. In this embodiment, the time difference at which the beacon ID is received is used.

The first beacon 10 and the second beacon 20 transmit different beacon IDs. However, since the information processing apparatus 30 holds the ID association information of the first beacon 10 and the second beacon 20, the transmission information of the first beacon 10 and the transmission information of the second beacon 20 are the same product. It can be processed as outgoing information from.

As illustrated in FIG. 6A, a plurality of receivers r1', r2', ... Are provided on the production line. The first beacon 10 and the second beacon 20 are included in the same product. The beacon ID of the first beacon 10 is referred to as beacon ID1. The beacon ID of the second beacon 20 is referred to as beacon ID2. The fact that the beacon ID 1 and the beacon ID 2 are provided in the same product is held by the association information storage unit 34. Further, the process master storage unit 33 also holds the receiver ID of each receiver. The circumference of the circle surrounded by the solid line is the radio wave reachable distance of the first beacon 10, and the circumference of the circle surrounded by the dotted line is the radio wave reachable distance of the second beacon 20. The radio wave reachable range of the first beacon 10 is wider than the radio wave reachable range of the second beacon 20. In the following description, the difference in the radio wave reach of two beacons attached to the same product is referred to as a radio wave reach difference.

As illustrated in FIG. 6B, the time when the receiver r1'receives the beacon ID1 is defined as t1. As illustrated in FIG. 7A, the time when the receiver r1'receives the beacon ID2 is t2. The position of the receiver r1'is determined and the radio wave reach distance difference is determined so that the time t1 is the start time of the process X and the time t2 is the end time of the process X. In this case, the process time of the process X is (t2-t1). As illustrated in FIG. 7B, it is assumed that the next step Y of the step X starts at the time t2. That is, the time t2 is the start time of the process Y.

As illustrated in FIG. 8A, the time when the receiver r2'receives the beacon ID1 is t3. The position of the receiver r2'is determined so that the time t3 becomes the end time of the process Y. In this case, the process time of the process Y is (t3-t2). As illustrated in FIG. 8B, it is assumed that the next step Z of the step Y starts at the time t3. That is, the time t3 is the start time of the process Z. Similarly, as illustrated in FIG. 9, the time when the receiver r2'receives the beacon ID 2 is t4. The radio wave reach distance difference is determined so that the time t4 becomes the end time of the process Z. In this case, the process time of process Z is (t4-t3).

FIG. 10 is a diagram illustrating the time when the beacon ID 1 and the beacon ID 2 are received by each receiver. In FIG. 10, “ON” is the time when each receiver starts receiving the beacon ID from the beacon.

FIG. 11 is a diagram illustrating the installation positions of the receivers r1'to r4' when the receivers are installed at different intervals. FIG. 11 illustrates a case where the range of each process is determined from the start position of the process. As illustrated in FIG. 11, first, (1) the start position of the step 1 is determined. The first receiver r1'is installed at a distance separated from the start position of step 1 by the radio wave reachable distance of the first beacon 10. (2) The end position of step 1 (start position of step 2) is a position separated from the start position of step 1 by the difference in radio wave reach between the first beacon 10 and the second beacon 20. (3) The end position of the process 2 (start position of the process 3) is after the installation location of the receiver r1'. The receiver r2'is installed at a position separated from the end position of the step 2 (the start position of the step 3) by the radio wave reachable distance of the first beacon 10. (4) The end position of step 3 (start position of step 4) is a position separated from the end position of step 3 (start position of step 4) by the difference in radio wave reach between the first beacon 10 and the second beacon 20. do. After (5), the receiver is installed by repeating (3) and (4). When moving the product at a constant speed, the range of each process can be narrowed by setting the correction value.

FIG. 12 is a diagram illustrating the installation positions of the receivers r1'to r4' when the receivers are installed at equal intervals. In FIG. 12, the range of the process is set to be the same as the radio wave reach distance difference between the first beacon 10 and the second beacon 20. First, the receivers r1'to r4' are installed at intervals equal to or larger than the difference in radio wave reach between the first beacon 10 and the second beacon 20. The point where the reception of the beacon ID of the first beacon 10 is started by each receiver is set as the start position of the process. The position where the radio wave reachable distance difference between the radio wave reachable distance of the first beacon 10 and the radio wave reachable distance of the second beacon 20 moves behind each receiver is the end position of the process (start position of the next process). And. When moving the product at a constant speed, the range of each process can be narrowed by setting the correction value.

(Process time determination process)
Hereinafter, the process time determination process will be described. The acquisition unit 31 acquires the reception time of the beacon ID from each beacon together with the receiver ID from the receivers r1'to rn'. FIG. 13A is a diagram illustrating setting information stored in the setting storage unit 32. When the production line is a line such as a belt conveyor that conveys products at a constant speed, the speed v is stored in the setting information as illustrated in FIG. 13 (a). The speed v is the speed at which the product is conveyed. The product may always be conveyed by the belt conveyor, but may be conveyed by the belt conveyor only in the case of delivery of each process.

FIG. 13B is a diagram illustrating the association information stored in the association information storage unit 34. As illustrated in FIG. 13B, the product ID and the beacon ID are associated with each other in the association information. For example, since the first beacon 10 and the second beacon 20 are attached to the product A001, ID1 and ID2 are associated with the product A001.

FIG. 13C is a diagram illustrating a process master stored in the process master storage unit 33. In this embodiment, a receiver is installed to determine the process. The position of the beacon received by the receiver is used as the process delimiter. As illustrated in FIG. 13 (c), in order to determine the start position and the end position of the process, the receiver installed at the position corresponding to the start position of the process and the receiver installed at the position corresponding to the end position of the process. The receiver is registered in the process master. In the example of FIG. 13 (c), the "start device" is a receiver ID for determining the start position of each process, and the "end device" is a receiver ID for determining the end position of each process. .. The process master also stores the correction distance at the start of the process and the correction distance at the end of the process. The "start correction distance" is a distance for correcting when there is a difference between the position where the beacon ID is received by each receiver and the process start position. The "end correction distance" is a distance for correction when there is a difference between the position where the beacon ID is received by each receiver and the process end position.

FIG. 13D is a diagram illustrating the beacon passage information stored in the passage information storage unit 35. When each receiver detects the radio wave from the beacon, the information of the beacon ID, the receiver ID, and the reception time is registered in the beacon passage information. The passage information storage unit 35 does not register the same beacon information with the same receiver within a certain period of time.

When determining which process the product A001 is currently in, the calculation unit 36 reads the latest information of the beacon passage information of the beacon ID 1 and the beacon ID 2 and acquires the receiver ID. Next, the calculation unit 36 acquires a process in which the receiver ID is the start device from the process master. The calculation unit 36 confirms whether other beacon information is registered in the beacon passage information in the same receiver. When the data corresponding to the number of beacons attached to the product A001 is registered in the calculation unit 36, the process is completed and the current process is the next process.

When determining the process of data having the beacon passage information, the calculation unit 36 acquires another beacon ID of the same product from the beacon ID of the beacon passage information and the association information of the product and the beacon. Next, the calculation unit 36 acquires a process in which the same receiver name is the start device from the process master from the device name of the beacon passage information. Next, the calculation unit 36 confirms whether other beacon information is registered in the beacon passage information in the same receiver. Next, the calculation unit 36 determines that the process is the first step when the data for the number of beacons attached to the same product is not registered, and the data for the number of beas attached to the same product is registered. In that case, it is determined to be the next step.

FIG. 14A is a diagram illustrating the accumulation of the relationship between the beacon ID received by each receiver and the time thereof. As illustrated in FIG. 14A, the received beacon ID and the reception time of the beacon ID are associated and stored in the passage information storage unit 35 for each receiver. FIG. 14B is a diagram illustrating the beacon passage information stored in the passage information storage unit 35. As illustrated in FIG. 14B, the relationship between the beacon ID and the reception time of the beacon ID is stored in association with the receiver ID.

FIG. 15 is a diagram illustrating a procedure for calculating a start time and an end time of each process from the beacon passage information stored in the passage information storage unit 35. As illustrated in FIG. 15, the calculation unit 36 calculates the time when the beacon ID 1 is received by the receiver r1'as the start time of the process 1. The calculation unit 36 calculates the time when the beacon ID 2 is received by the receiver r1'as the end time of the process 1 and the start time of the process 2. The calculation unit 36 calculates the time when the beacon ID 1 is received by the receiver r2'as the end time of the process 2 and the start time of the process 3. The calculation unit 36 calculates the time when the beacon ID 2 is received by the receiver r2'as the end time of the process 3 and the start time of the process 4. After that, the start time and the end time of each process are calculated in the same manner.

FIG. 16 is a diagram illustrating a flowchart showing a process time determination process. As illustrated in FIG. 16, the calculation unit 36 sorts the process masters in product order and process order (step S1). Next, the calculation unit 36 sets the search product and the search process, and initializes the start / end times (step S2). Next, the calculation unit 36 reads the beacon passage information stored in the passage information storage unit 35 one by one (step S3).

Next, the calculation unit 36 determines whether or not there is unprocessed data in the beacon passage information (step S4). If it is determined as "Yes" in step S4, the arithmetic unit 36 determines whether or not the product is the same product (step S5). If it is determined as "No" in step S5, the calculation unit 36 changes the search product, and the process starts from the beginning. Further, the calculation unit 36 initializes the start / end times (step S6).

When it is determined as "Yes" in step S5 or after the execution of step S6, the calculation unit 36 determines whether or not the process is the same (step S7). When it is determined as "No" in step S7, the calculation unit 36 changes the search process, acquires the start device and the end device of the process master, and initializes the start time and the end time (step S8). If "Yes" is determined in step 7, or after the execution of step S8, the arithmetic unit 36 determines whether or not the start device is an end device (step S9).

If it is determined as "Yes" in step S9, the arithmetic unit 36 sets the earliest time of the start device as the start time and the latest time of the start device as the end time (step S10). After that, it is executed again from step S3. If "No" is determined in step S9, the calculation unit 36 sets the latest time of the start device as the start time and the earliest time of the start device as the end time (step S11). After that, it is executed again from step S3.

If "No" is determined in step S4, the calculation unit 36 corrects the start time and end time of the process passage information from the speed v of the setting information and the correction distance of the process master (step S12). After that, the execution of the flowchart ends. FIG. 17 is a diagram illustrating the corrected start time and end time of each process stored in the process time storage unit 37. The start time and end time of each process are also displayed on the display device 104.

FIG. 18 is a diagram illustrating a flowchart showing a process time determination process when the receivers are installed at equal intervals of the interval L. As illustrated in FIG. 18, steps S21 to S31 are the same processes as steps S1 to S11 in FIG. If "No" is determined in step S24, the calculation unit 36 corrects the start time and end time of the process passage information from the distance of the setting information and the correction distance of the process master (step S32). After that, the execution of the flowchart ends. FIG. 19A is a diagram illustrating the setting information stored in the setting storage unit 32 in this case. As illustrated in FIG. 19A, the distance L is stored in the setting information. Further, the setting information described with reference to FIG. 13A is also stored in the setting storage unit 32. FIG. 19B is a diagram illustrating the corrected start time and end time of each process stored in the process time storage unit 37. As illustrated in FIG. 19B, the start time and the end time are corrected by using the value obtained by dividing each process time by the distance L. The start time and end time of each process are also displayed on the display device 104.

FIG. 20 is a diagram illustrating another example of the process information collection system. In each of the above examples, the information processing apparatus 40 acquires data from a plurality of receivers r1'... rn'. On the other hand, the server 202 having the function of the information processing device 40 may acquire data from a plurality of receivers r1'... rn' through a telecommunication line 201 such as the Internet. Although the beacon is used as an example of the transmitter, other transmitters may be used.

According to this embodiment, there are a plurality of receivers r1'to rn'installed at positions corresponding to each of the plurality of processes of the production line, and the beacon of the first beacon 10 provided in the product passing through the plurality of processes. The acquisition unit 31 acquires the first reception time when the ID is received and the second reception time when the radio wave of the second beacon 20 which is provided in the product and has a radio wave reach shorter than that of the first beacon 10 is received. .. From the first reception time and the second reception time acquired by the acquisition unit 31, the calculation unit 36 calculates the input time and the exit time of the plurality of processes. According to this configuration, the entry / exit time of each step can be calculated by using the difference in the radio wave reachable distance between the radio wave reachable distance of the first beacon 10 and the radio wave reachable distance of the second beacon 20. As a result, it is not necessary to install a receiver in each process. As a result, the number of receivers can be reduced.

By storing the speed at which the product moves in the plurality of processes in the setting information storage unit 32, it is possible to correct at least one of the input time and the exit time of the plurality of processes by using the speed. .. By storing the installation intervals of the plurality of receivers in the setting information storage unit 32, it is possible to correct at least one of the input time and the exit time of the plurality of processes by using the installation intervals.

In each of the above examples, the acquisition unit 31 receives the radio wave of the first transmitter provided in the product passing through the plurality of processes by the plurality of receivers installed at the positions corresponding to each of the plurality of processes. It functions as an example of an acquisition unit that acquires one reception time and the second reception time when the radio wave of the second transmitter, which is provided in the product and has a shorter radio wave reach than the first transmitter, is received. The calculation unit 36 functions as an example of a calculation unit that calculates the entry time and the exit time of the plurality of steps from the first reception time and the second reception time acquired by the acquisition unit. The setting information storage unit 32 functions as an example of a storage unit that stores the speed at which the product moves in the plurality of steps and a storage unit that stores the installation intervals of the plurality of receivers. The first beacon 10 functions as an example of the first transmitter. The second beacon 20 functions as an example of the second transmitter.

Although the examples of the present invention have been described in detail above, the present invention is not limited to the specific examples thereof, and various modifications and variations are made within the scope of the gist of the present invention described in the claims. It can be changed.

10 1st beacon 20 2nd beacon 30 Information processing device 31 Acquisition unit 32 Setting storage unit 33 Process master storage unit 34 Linking information storage unit 35 Passage information storage unit 36 Calculation unit 37 Process time storage unit 100 Process information collection system

Claims (5)

A receiver installed at a position corresponding to each of the plurality of processes, the first reception time when the radio wave of the first transmitter provided in the product passing through the plurality of processes is received, and the first reception time provided in the product. An acquisition unit that acquires the second reception time when the radio wave of the second transmitter having a shorter radio wave reach than the first transmitter is received, and
An information processing device including a calculation unit that calculates an input time and an exit time of the plurality of processes from the first reception time and the second reception time acquired by the acquisition unit. A storage unit for storing the speed at which the product moves in the plurality of steps is provided.
The information processing apparatus according to claim 1, wherein the calculation unit uses the speed to correct at least one of an entry time and an exit time of the plurality of steps. A storage unit for storing the installation intervals of the plurality of receivers is provided.
The information processing apparatus according to claim 1 or 2, wherein the calculation unit corrects at least one of an entry time and an exit time of the plurality of steps by using the installation interval. The acquisition unit is a receiver installed at a position corresponding to each of the plurality of processes, and the first reception time of receiving the radio wave of the first transmitter provided in the product passing through the plurality of processes, and the product. Obtains the second reception time when the radio wave of the second transmitter, which has a shorter radio wave reach than the first transmitter, is received.
A process information collecting method, wherein a calculation unit calculates an entry time and an exit time of the plurality of processes from the first reception time and the second reception time acquired by the acquisition unit. On the computer
A receiver installed at a position corresponding to each of the plurality of processes, the first reception time when the radio wave of the first transmitter provided in the product passing through the plurality of processes is received, and the first reception time provided in the product. The process of acquiring the second reception time of receiving the radio wave of the second transmitter having a shorter radio wave reach than the first transmitter, and
A process information collection program characterized by executing a process of calculating an input time and an exit time of the plurality of processes from the first reception time and the second reception time acquired by the acquisition unit.

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