JP2017059942A - Device, method and program for calculation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a calculation device, a calculation method and a calculation program, capable of controlling a control target device within a fixed time if a transmission delay occurs on a communication line.SOLUTION: The calculation device includes a measurement unit, a transmitter unit, an acquisition unit, a generation unit and an interface. The measurement unit measures a communication time between the self-device and a control device. The transmitter unit transmits to the control device a source signal which is a signal to be a source for generating a control signal. The acquisition unit acquires from the control device the control signal which the control device generates based on the source signal. The generation unit generates, based on the source signal, the control signal according to the total value of a time, which is required for the control device to generate a control signal, and a communication time. The interface transmits a control signal which is transmittable at an earlier time, among the control signal acquired from the control device and the control signal generated by the generation unit.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a calculation device, a calculation method, and a calculation program.

  There is a remote control technology in which a control device remotely controls a control target device via a communication line in order to easily recover the control target device from a disaster. However, the conventional apparatus may not be able to control the apparatus to be controlled within a certain time when a transmission delay occurs in the communication line.

JP 2014-63414 A

  The problem to be solved by the present invention is to provide a computing device, a computing method, and a computing program capable of controlling a device to be controlled within a certain time even when a transmission delay occurs in a communication line.

  The arithmetic device according to the embodiment includes a measurement unit, a transmission unit, an acquisition unit, a generation unit, and an interface. The measurement unit measures a communication time between the own device and the control device. A transmission part transmits the original signal which is a signal used as the origin for producing | generating a control signal to a control apparatus. The acquisition unit acquires a control signal generated by the control device based on the original signal from the control device. The generation unit generates the control signal based on the original signal according to the total value of the time required for the control device to generate the control signal and the communication time. The interface transmits a control signal that can be transmitted at an earlier time among the control signal acquired from the control device and the control signal generated by the generation unit.

The figure which shows the 1st example of a structure of a control system provided with an arithmetic unit in embodiment. The sequence diagram which shows the 1st example of operation | movement of the control system in embodiment. The flowchart which shows the 1st example of operation | movement of the arithmetic unit in embodiment. The flowchart which shows the example of operation | movement of the control apparatus in embodiment. The flowchart which shows the 2nd example of operation | movement of the arithmetic unit in embodiment. The flowchart which shows the 3rd example of operation | movement of the arithmetic unit in embodiment. The figure which shows the 2nd example of a structure of a control system provided with an arithmetic unit in embodiment. The sequence diagram which shows the 2nd example of operation | movement of the control system in embodiment. The flowchart which shows the 4th example of operation | movement of the arithmetic unit in embodiment. The flowchart which shows the example of operation | movement of the aggregation calculation apparatus in embodiment. The flowchart which shows the example of operation | movement of the control apparatus in embodiment. The figure which shows the 3rd example of a structure of a control system provided with an arithmetic unit in embodiment. The figure which shows the 4th example of a structure of a control system provided with an arithmetic unit in embodiment.

Hereinafter, a computing device, a computing method, and a computing program according to embodiments will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a diagram illustrating an example of a configuration of a control system 1 a including an arithmetic device 20. The control system 1a includes an input device 10, an arithmetic device 20, a communication line 30, a control device 40, and an output device 50. There may be a plurality of input devices 10. There may be a plurality of control devices 40. Hereinafter, with respect to matters common to the control devices 40-1 to 40-N (N is an integer equal to or greater than 1), a part of the reference numerals are omitted and expressed as “control device 40”. A plurality of output devices 50 may be provided.

  The input device 10 is an information processing device. The input device 10 transmits a signal (hereinafter referred to as “original signal”) that is a source for generating a control signal to the arithmetic device 20. When the input device 10 includes a switch or button, the input device 10 transmits a digital original signal corresponding to the operation on the switch or button to the arithmetic device 20 via the local network 100. The input device 10 may be a sensor. The input device 10 transmits an analog original signal corresponding to the temperature or pressure related to the output device 50 to the arithmetic device 20 via the local network 100.

  In the first embodiment, the input device 10 transmits the first original signal and the second original signal to the arithmetic device 20 as an example. The first original signal is, for example, a digital signal corresponding to an operation on a switch or button. The second original signal is an analog signal corresponding to the temperature related to the output device 50, for example. The local network 100 is a fieldbus, a wired communication line, or a wireless communication line. When the local network 100 is a fieldbus, for example, it is Profibus, MODBUS (registered trademark), or TC-NET (registered trademark). When the local network 100 is a wired communication line, for example, Ethernet (registered trademark) is used. When the local network 100 is a wireless communication line, for example, it is a wireless communication line such as a wireless LAN or a 920 MHz band.

  The arithmetic device 20 is a communication device (communication module). The arithmetic device 20 acquires the first original signal and the second original signal from the input device 10 via the local network 100. The arithmetic device 20 transmits the second original signal to the control device 40 via the communication line 30. The computing device 20 generates a first control signal based on the first original signal. The arithmetic device 20 transmits the first control signal to the output device 50.

  The computing device 20 measures the round-trip or one-way communication time between itself and the control device 40. The computing device 20 determines whether or not a transmission delay has occurred in the communication line 30 based on the processing time for the control device 40 to generate the second control signal and the communication time.

  The arithmetic device 20 acquires a second control signal based on the second original signal from the control device 40 via the communication line 30. When there is no transmission delay in the communication line 30, the arithmetic device 20 transmits the second control signal acquired from the control device 40 to the output device 50. The computing device 20 generates a second control signal based on the second original signal. When a transmission delay occurs in the communication line 30, the arithmetic device 20 transmits the second control signal generated by the own device to the output device 50 within a certain time.

  The communication line 30 is a wide area network communication line. The communication line 30 is, for example, the Internet, a dedicated line, or a 3G wireless communication line. The communication protocol of the communication line 30 is, for example, HTTPS (Hypertext Transfer Protocol Secure).

  The control device 40 is an information processing device such as a server device. The control device 40 may be a cloud server device that operates based on cloud technology. The control device 40 generates a second control signal based on the second original signal. The control device 40 controls the output device 50 with the second control signal.

  The control device 40 includes a communication unit 41, a program storage unit 42, and a control unit 43. The communication unit 41 communicates with the arithmetic device 20. For example, the communication unit 41 acquires the second original signal from the arithmetic device 20. The communication unit 41 may acquire a program to be stored in the program storage unit 42 from the arithmetic device 20. The program storage unit 42 stores a control program executed by the control unit 43.

  The control unit 43 measures the communication time of the communication line 30 between the arithmetic device 20 and the control device 40. For example, the control unit 43 measures the communication time of the communication line 30 based on the time stamp of the signal acquired from the arithmetic device 20. For example, the control unit 43 measures the average value of the communication time of the communication line 30. The control unit 43 generates a second control signal based on the second original signal. The control unit 43 calculates the measured value of the total value of the time required for the control device 40 to generate the second control signal and the communication time (hereinafter referred to as “response time”) via the communication unit 41. 20 to send. The communication time may be the time required for the signal to reciprocate, or may be the time required for the signal to be communicated in one direction (one-way time). The control unit 43 may transmit a measurement value of the average response time (hereinafter referred to as “average response time”) to the arithmetic device 20 via the communication unit 41. The processing time for the control unit 43 to generate the second control signal may be measured in advance.

  The output device 50 is a device to be controlled. The output device 50 is an actuator such as a servo motor. The output device 50 may be, for example, an LED (Light Emitting Diode) display or an alarm device. The output device 50 acquires the first control signal and the second control signal from the arithmetic device 20 via the local network 100. The output device 50 operates based on the first control signal and the second control signal.

The configuration of the arithmetic device 20 will be described.
The computing device 20 includes an interface 201, a distribution destination storage unit 202, a program storage unit 203, a time storage unit 204, a result storage unit 205, a distribution unit 206, a generation unit 207, a comparison unit 208, a communication Unit 209, aggregation unit 210, and measurement unit 211.

  Some or all of the interface 201, the distribution unit 206, the generation unit 207, the comparison unit 208, the communication unit 209, the aggregation unit 210, and the measurement unit 211 may be, for example, a CPU (Central Processing Unit) or the like. The processor is a software function unit that functions by executing a program stored in the storage unit. Some or all of these functional units may be hardware functional units such as LSI (Large Scale Integration) and ASIC (Application Specific Integrated Circuit).

  A part or all of the distribution destination storage unit 202, the program storage unit 203, the time storage unit 204, and the result storage unit 205 may be, for example, a non-volatile storage medium (non-temporary) such as a magnetic hard disk device or a semiconductor storage device. A storage device having a typical recording medium). Each storage unit may include, for example, a volatile storage medium such as a RAM (Random Access Memory) or a register.

  The interface 201 acquires the first original signal from the input device 10. The interface 201 transmits the acquired first original signal to the communication unit 209. The interface 201 acquires the second original signal from the input device 10. The interface 201 transmits the acquired second original signal to the communication unit 209.

  The interface 201 transmits the first control signal generated by the generation unit 207 to the output device 50. The interface 201 acquires the second control signal generated by the control device 40 from the communication unit 209.

  The interface 201 transmits the second control signal generated by the control device 40 to the output device 50. When the distribution unit 206 selects the second control signal generated by the generation unit 207, the interface 201 may transmit the second control signal generated by the generation unit 207 to the output device 50. For example, the interface 201 transmits, to the output device 50, a second control signal that can be transmitted at an earlier time among the second control signal generated by the control device 40 and the second control signal generated by the generation unit 207. To do. That is, the interface 201 gives priority to the second control signal for which the calculation for generation has been completed earlier among the second control signal generated by the control device 40 and the second control signal generated by the generation unit 207.

  When the original signal acquired at different timings is a signal indicating the same content, the interface 201 transmits a control signal generated in advance based on the original signal. For example, when the first original signal acquired this time and the first original signal acquired last time are signals indicating the same content, the interface 201 generates the first generated based on the first original signal acquired last time. A control signal is transmitted to the output device 50. When the second original signal acquired this time and the second original signal acquired last time are signals indicating the same content, the interface 201 generates a second control signal generated based on the second original signal acquired last time. Is transmitted to the output device 50. A control signal generated based on the original signal acquired last time is stored in the result storage unit 205. Hereinafter, matters common to a plurality of control signals such as the first control signal and the second control signal will be referred to as “control signals”. The interface 201 may acquire a control signal from the result storage unit 205 via the generation unit 207.

  The distribution destination storage unit 202 stores information indicating the distribution destination of the original signal (hereinafter referred to as “distribution destination information”). In the first embodiment, in the distribution destination information stored in the distribution destination storage unit 202, the first original signal and the arithmetic device 20 are associated with each other. That is, the distribution destination of the first original signal is the arithmetic device 20. Thereby, the arithmetic unit 20 can generate the first control signal based on the first original signal. In the first embodiment, in the distribution destination information stored in the distribution destination storage unit 202, the second original signal and the control device 40 are associated with each other. That is, the distribution destination of the second original signal is the control device 40. Thereby, the arithmetic unit 20 can generate the second control signal based on the second original signal. The control device 40 can generate the second control signal based on the second original signal.

  The program storage unit 203 stores a program for the generation unit 207 to execute an operation. The program stored in the program storage unit 203 may be a program acquired from the control device 40. The program stored in the program storage unit 203 may be the same as the program stored in the program storage unit 42 of the control device 40. The program stored in the program storage unit 203 may be a part of the program stored in the program storage unit 42 of the control device 40.

  The time storage unit 204 stores information representing the processing time when the control device 40 executes the program. The processing time when the control device 40 executes the program is, for example, the time required for the control device 40 to generate the second control signal. The time storage unit 204 may store information representing the processing time when the arithmetic device 20 executes the program. The processing time when the arithmetic device 20 executes the program is, for example, the time required for the arithmetic device 20 to generate the first control signal or the second control signal. The time storage unit 204 stores the measurement value of the response time acquired from the control device 40. The time storage unit 204 stores the measured value of the average response time acquired from the control device 40. The average response time measurement may be used as a threshold. The threshold value may be a predetermined value. Hereinafter, the threshold is a measured value of average response time.

  The result storage unit 205 associates and stores the first original signal acquired last time and the first control signal (generation result) generated based on the first original signal acquired last time. The result storage unit 205 stores information on the second original signal acquired last time and the second control signal (generation result) generated based on the second original signal acquired last time in association with each other.

  The distribution unit 206 determines the distribution destination of the first original signal to the arithmetic device 20 based on the distribution destination information. Accordingly, the distribution unit 206 can determine that the first original signal is not transmitted to the control device 40. The distribution unit 206 determines the distribution destination of the second original signal to the control device 40 based on the distribution destination information.

  The distribution unit 206 selects the second control signal acquired from the control device 40 or the second control signal generated by the generation unit 207 based on the previous measured response time. That is, the distribution unit 206 selects the second control signal acquired from the control device 40 or the second control signal generated by the generation unit 207 based on whether or not a transmission delay has occurred in the communication line 30.

  For example, the distribution unit 206 selects the second control signal acquired from the control device 40 when the threshold value is equal to or greater than the measurement value of the previous response time. That is, the distribution unit 206 selects the second control signal acquired from the control device 40 when there is no transmission delay in the communication line 30.

  For example, the distribution unit 206 selects the second control signal generated by the generation unit 207 when the threshold value is less than the measurement value of the previous response time. That is, the distribution unit 206 selects the second control signal generated by the generation unit 207 when a transmission delay occurs in the communication line 30.

  The generation unit 207 generates the first control signal based on the first original signal so as to be in time for the target transmission time. For example, the generation unit 207 generates the first control signal in time for the target transmission time by considering the time required to generate the control signal. When the distribution unit 206 selects the second control signal generated by the generation unit 207, the second control signal is generated based on the second original signal in time for the target transmission time.

  When the first original signal acquired this time and the first original signal acquired last time are the same contents, the generation unit 207 is generated based on the first original signal acquired last time. The first control signal is acquired from the result storage unit 205. When the second original signal acquired this time and the second original signal acquired last time are signals indicating the same content, the generation unit 207 is generated based on the second original signal acquired last time. The second control signal is acquired from the result storage unit 205.

  The comparison unit 208 compares the original signals acquired by the interface unit 201 at different timings. For example, the comparison unit 208 compares the current first original signal with the previous first original signal. The comparison unit 208 determines whether or not the first original signal acquired this time and the first original signal acquired last time are signals indicating the same content. The comparison unit 208 compares the current second original signal with the previous second original signal. The comparison unit 208 determines whether or not the second original signal acquired this time and the second original signal acquired last time are signals indicating the same content.

  The communication unit 209 communicates with the control device 40 via the communication line 30. For example, the communication unit 209 acquires the second control signal from the control device 40. For example, the communication unit 209 acquires a response time measurement value from the control device 40. For example, the communication unit 209 acquires a measured value of average response time from the control device 40.

  The aggregating unit 210 aggregates the second control signals acquired from the plurality of control devices 40. That is, the aggregation unit 210 collects a plurality of second control signals. Note that the aggregation unit 210 may not aggregate the second control signals acquired from the control device 40 when the number of the control devices 40 is one.

  The measurement unit 211 may measure the response time instead of the control device 40. For example, the measurement unit 211 is configured such that the difference between the time when the communication unit 209 transmits the second original signal to the control device 40 and the time when the communication unit 209 acquires the second control signal and the control device 40 executes the program. The measurement value of the response time may be calculated based on the processing time in the case. The measurement unit 211 may cause the time storage unit 204 to store the calculated measured response time. The measurement unit 211 may cause the time storage unit 204 to store the calculated measurement value of the average response time.

  FIG. 2 is a sequence diagram illustrating an example of the operation of the control system 1a. The input device 10 transmits the first original signal and the second original signal to the arithmetic device 20 (step S101). The arithmetic unit 20 acquires the first original signal and the second original signal (step S102). The arithmetic unit 20 compares the measured value of the previous response time with the threshold value. The computing device 20 determines the distribution destination of the second original signal to the control device 40 based on the distribution destination information (step S103). The computing device 20 transmits the second original signal to the control device 40 (step S104).

  The control device 40 acquires the second original signal (step S105). The control device 40 generates a second control signal based on the second original signal (step S106). The control device 40 transmits the generated second control signal to the arithmetic device 20 (step S107).

  The computing device 20 generates a first control signal based on the first original signal (step S108). The computing device 20 transmits the first control signal to the output device 50 (step S109). The output device 50 acquires the first control signal from the arithmetic device 20 (step S110).

  The computing device 20 generates a second control signal based on the second original signal (step S111). When the threshold value is less than the measured value of the previous response time (when a transmission delay occurs in the communication line 30), the arithmetic unit 20 waits for a second control signal transmitted from the control device 40 for a certain period of time. The arithmetic unit 20 acquires the second control signal from the control device 40 when the second control signal can be acquired within a certain time.

  When the threshold is equal to or greater than the measured value of the previous response time (when no transmission delay occurs in the communication line 30), the arithmetic unit 20 waits for the second control signal transmitted from the control device 40 for less than a certain time. If the second control signal can be acquired within less than a certain time, the arithmetic device 20 acquires the second control signal from the control device 40 (step S112).

  The computing device 20 aggregates the plurality of second control signals acquired from the plurality of control devices 40 (step S113). When the arithmetic device 20 acquires the second control signal from the control device 40 before the own device generates the second control signal, the arithmetic device 20 transmits the acquired second control signal to the output device 50. In a case where the arithmetic device 20 has not acquired the second control signal from the control device 40 before the own device generates the second control signal, the arithmetic device 20 transmits the second control signal generated by the own device to the output device 50 (step). S113). The output device 50 acquires the second control signal from the arithmetic device 20 (step S110).

  FIG. 3 is a flowchart illustrating an example of the operation of the arithmetic device 20. Step S201 corresponds to step S102 shown in FIG. Step S210 corresponds to step S109 shown in FIG. Step S212 corresponds to step S114 shown in FIG.

  The interface 201 acquires the first original signal and the second original signal (step S201). The distribution unit 206 determines whether or not the threshold is equal to or greater than the measured value of the previous response time (step S202).

  If the threshold is equal to or greater than the measured value of the previous response time (step S202: YES), the distribution unit 206 determines whether or not to transmit the first original signal and the second original signal to the control device 40. A determination is made for each original signal based on the information (step S203).

  When the distribution unit 206 determines that the first original signal is not transmitted to the control device 40 (step S203: NO), the generation unit 207 determines the first original signal based on the first original signal in time for the target transmission time. 1 control signal is generated (step S204). When the distribution unit 206 determines that the second original signal is transmitted to the control device 40 (step S203: YES), the communication unit 209 transmits the second original signal to the control device 40 (step S205).

  When the threshold value is less than the measurement value of the previous response time (step S202: NO), the distribution unit 206 determines whether or not to transmit the first original signal and the second original signal to the control device 40. A determination is made for each original signal based on the information (step S206).

  When the distribution unit 206 determines that the first original signal is not transmitted to the control device 40 (step S206: NO), the generation unit 207 determines the first original signal based on the first original signal in time for the target transmission time. 1 control signal is generated. The generation unit 207 generates a second control signal based on the second original signal in time for the target transmission time (step S207). When the distribution unit 206 determines that the second original signal is transmitted to the control device 40 (step S206: YES), the communication unit 209 transmits the second original signal to the control device 40 (step S208).

  The distribution unit 206 determines whether or not the first control signal has been generated for all the acquired first original signals (step S209). When the first original signal for which the calculation device 20 has not performed the first control signal generation process remains (step S209: NO), the distribution unit 206 determines whether the step S204 or the step is performed according to the determination result in step S202. The process returns to S207.

  When the first control signal is generated for all the acquired first original signals (step S209: YES), the interface 201 transmits the first control signal to the output device 50 (step S210). The aggregating unit 210 aggregates a plurality of second control signals acquired from the plurality of control devices 40 (step S211).

  When the generation unit 207 acquires the second control signal from the control device 40 before the generation unit 207 generates the second control signal, the interface 201 transmits the acquired second control signal to the output device 50. If the generation unit 207 has not acquired the second control signal from the control device 40 before the generation unit 207 generates the second control signal, the interface 201 transmits the second control signal generated by the generation unit 207 to the output device 50 ( Step S212). Each part of the arithmetic unit 20 returns the process to step S201.

  FIG. 4 is a flowchart illustrating an example of the operation of the control device 40. Step S301 corresponds to step S105 shown in FIG. Step S302 corresponds to step S106 shown in FIG. Step S303 corresponds to step S107 shown in FIG.

  The communication unit 41 acquires the second original signal from the arithmetic device 20 (step S301). The control unit 43 generates a second control signal based on the program stored in the program storage unit 42 and the second original signal (step S302). The communication unit 41 transmits the second control signal to the arithmetic device 20 (step S303).

  FIG. 5 is a flowchart illustrating an example of the operation of the arithmetic device 20. Step S401 corresponds to step S102 shown in FIG. Step S408 corresponds to step S109 shown in FIG. Step S410 corresponds to step S114 shown in FIG.

  The interface 201 acquires the first original signal and the second original signal (step S401). The comparison unit 208 determines whether or not the first original signal acquired this time and the first original signal acquired last time are signals indicating the same content. The comparison unit 208 determines whether or not the second original signal acquired this time and the second original signal acquired last time are the same contents (step S402).

  When the first original signal acquired this time and the first original signal acquired last time are signals indicating the same contents (step S402: YES), the generation unit 207 obtains the first original signal acquired last time. The first control signal generated based on is acquired from the result storage unit 205. That is, the generation unit 207 sets the first control signal generated based on the first original signal acquired last time as the first control signal generated based on the first original signal acquired this time.

  In addition, when the second original signal acquired this time and the second original signal acquired last time are signals indicating the same contents (step S402: YES), the generation unit 207 acquires the second original signal acquired last time. The second control signal generated based on the original signal is acquired from the result storage unit 205. That is, the generation unit 207 sets the second control signal generated based on the second original signal acquired last time as the second control signal generated based on the second original signal acquired this time ( Step S403). The generation unit 207 proceeds with the process to step S410.

  When the first original signal acquired this time and the first original signal acquired last time are signals indicating different values (step S402: NO), the distribution unit 206 determines the first original signal and the second original signal. Whether or not to transmit the original signal to the control device 40 is determined for each original signal based on the distribution destination information (step S404).

  When the distribution unit 206 determines that the first original signal is not transmitted to the control device 40 (step S404: NO), the generation unit 207 determines the first original signal based on the first original signal in time for the target transmission time. 1 control signal is generated (step S405). When the distribution unit 206 determines that the second original signal is transmitted to the control device 40 (step S404: YES), the communication unit 209 transmits the second original signal to the control device 40 (step S406).

  The distribution unit 206 determines whether or not the first control signal has been generated for all the acquired first original signals (step S407). When the first original signal for which the arithmetic device 20 has not performed the first control signal generation process remains (step S407: NO), the distribution unit 206 returns the process to step S405.

  When the first control signal is generated for all the acquired first original signals (step S407: YES), the interface 201 transmits the first control signal to the output device 50 (step S408). The aggregating unit 210 aggregates a plurality of second control signals acquired from the plurality of control devices 40 (step S409).

  When the generation unit 207 acquires the first control signal or the second control signal from the result storage unit 205 in step S403, the interface 201 outputs the first control signal or the second control signal acquired from the result storage unit 205. To device 50. When the generation unit 207 has not acquired the second control signal from the result storage unit 205 in step S <b> 403, the interface 201 transmits the second control signal acquired from the control device 40 to the output device 50. If the generation unit 207 has not acquired the first control signal from the result storage unit 205 in step S403, the interface 201 transmits the first control signal generated by the generation unit 207 to the output device 50 (step S410). Each part of the arithmetic unit 20 returns the process to step S401.

  FIG. 6 is a flowchart illustrating an example of the operation of the arithmetic device 20. Step S501 corresponds to step S102 shown in FIG. Step S507 corresponds to step S109 shown in FIG. Step S509 corresponds to step S114 shown in FIG.

  The interface 201 acquires the first original signal and the second original signal (step S501). The distribution unit 206 classifies the first original signal and the second original signal for each control program based on the association between the original signal and the control program. The distribution unit 206 may assign a number indicating classification to the first original signal and the second original signal (step S502). The distribution unit 206 determines whether to transmit the first original signal and the second original signal to the control device 40 for each original signal based on the distribution destination information (step S503).

  When the distribution unit 206 determines that the first original signal is not transmitted to the control device 40 (step S503: NO), the generation unit 207 is in time for the target transmission time based on the classified first original signal. Thus, the first control signal is generated (step S504). When the distribution unit 206 determines that the second original signal is transmitted to the control device 40 (step S503: YES), the communication unit 209 transmits the classified second original signal to the control device 40 (step S505). .

  The distribution unit 206 determines whether or not the first control signal has been generated for all the acquired first original signals (step S506). When the first original signal for which the arithmetic device 20 has not performed the first control signal generation process remains (step S506: NO), the distribution unit 206 returns the process to step S504.

  When the first control signal is generated for all the acquired first original signals (step S506: YES), the interface 201 transmits the first control signal to the output device 50 (step S507). The aggregating unit 210 aggregates a plurality of second control signals acquired from the plurality of control devices 40 (step S508). The interface 201 transmits the acquired second control signal to the output device 50 (step S509). Each part of the arithmetic unit 20 returns the process to step S501.

  As described above, the arithmetic device 20 according to the first embodiment includes the measurement unit 211, the communication unit 209, the generation unit 207, and the interface 201. The measuring unit 211 measures the communication time between the arithmetic device 20 and the control device 40. The communication unit 209 (transmission unit) transmits an original signal, which is a source signal for generating a control signal, to the control device. The communication unit 209 (acquisition unit) acquires from the control device 40 the second control signal generated by the control device 40 based on the second original signal. The generation unit 207 generates the second control signal based on the second original signal according to the total value (response time) of the time required for the control device 40 to generate the second control signal and the communication time. The interface 201 transmits a second control signal that can be transmitted at an earlier time among the second control signal acquired from the control device 40 and the second control signal generated by the generation unit 207.

  Thus, the arithmetic device 20 of the first embodiment can control the output device 50 to be controlled within a certain time even when a transmission delay occurs in the communication line 30.

  Since the arithmetic unit 20 of the first embodiment executes a part of the control, the initial equipment cost of the control system 1a can be suppressed. The control system 1a according to the first embodiment can reduce the influence of the propagation delay generated in the communication line 30 by cooperation between the control device 40 such as a cloud server device and the arithmetic device 20.

  The control system 1a of the first embodiment can store a program in a plurality of control devices 40 that are physically separated. Since the control system 1a of the first embodiment does not lose the control program, the control program rebuilding time and the control device 40 replacement time can be shortened.

(Second Embodiment)
The second embodiment is different from the first embodiment in that the control system 1b includes an aggregation calculation device 60. In the second embodiment, only differences from the first embodiment will be described.

  FIG. 7 is a diagram illustrating an example of the configuration of the control system 1b including the arithmetic device 20. The control system 1b includes an input device 10, an arithmetic device 20, a communication line 30, a control device 40, an output device 50, and an aggregate arithmetic device 60.

  In the second embodiment, as an example, the input device 10 transmits a first original signal, a second original signal, and a third original signal to the arithmetic device 20. The first original signal is, for example, a digital signal corresponding to an operation on a switch or button. The second original signal is an analog signal corresponding to the temperature related to the output device 50, for example. The third original signal is, for example, an analog signal corresponding to the pressure related to the output device 50.

  The comparison unit 208 may determine whether or not the first original signal acquired this time and the first original signal acquired last time are signals indicating the same content. The comparison unit 208 may determine whether or not the second original signal acquired this time and the second original signal acquired last time are signals indicating the same content. The comparison unit 208 may determine whether or not the third original signal acquired this time and the third original signal acquired last time are signals indicating the same content.

  The distribution unit 206 may classify the first original signal, the second original signal, and the third original signal for each control program based on the association between the original signal and the control program. The distribution unit 206 may assign a number indicating the classification to the first original signal, the second original signal, and the third original signal.

  The aggregation arithmetic device 60 is a relay device that relays communication. The aggregation arithmetic device 60 acquires the first original signal, the second original signal, and the third original signal from the arithmetic device 20 via the local network 110. The aggregation arithmetic device 60 transmits the second original signal and the third original signal to the control device 40 via the communication line 30. The aggregation calculation device 60 generates a third control signal based on the third original signal. The aggregation arithmetic device 60 transmits the third control signal to the arithmetic device 20.

The configuration of the aggregation calculation device 60 will be described.
The aggregation calculation device 60 acquires the second control signal from the control device 40. The aggregation calculation device 60 acquires the second control signal for each control device 40 and aggregates the plurality of second control signals. The aggregation arithmetic device 60 transmits the aggregated second control signal to the arithmetic device 20. The aggregation arithmetic device 60 may transmit the aggregated second control signal to the plurality of arithmetic devices 20.

  The aggregation calculation device 60 includes a communication unit 601, a distribution destination storage unit 602, a program storage unit 603, a time storage unit 604, a distribution unit 605, a generation unit 606, an aggregation unit 607, and a measurement unit 608. Prepare.

  Some or all of the communication unit 601, the distribution unit 605, the generation unit 606, the aggregation unit 607, and the measurement unit 608, for example, a processor such as a CPU executes a program stored in the storage unit. This is a software function unit that functions according to Some or all of these functional units may be hardware functional units such as an LSI or an ASIC.

  Part or all of the distribution destination storage unit 602, the program storage unit 603, and the time storage unit 604 is a non-volatile storage medium (non-temporary recording medium) such as a magnetic hard disk device or a semiconductor storage device. It is configured using a storage device. Each storage unit may have, for example, a volatile storage medium such as a RAM or a register.

  The communication unit 601 acquires the second original signal from the arithmetic device 20. The communication unit 601 acquires the third original signal from the input device 10. The communication unit 601 transmits the acquired second original signal to the control device 40. The communication unit 601 acquires the second control signal generated by the control device 40 based on the second original signal from the control device 40 via the communication line 30. The communication unit 601 transmits the second control signal generated by the control device 40 based on the second original signal to the arithmetic device 20 via the local network 110.

  The distribution destination storage unit 602 stores distribution destination information. In the second embodiment, in the distribution destination information stored in the distribution destination storage unit 602, the third original signal and the aggregation calculation device 60 are associated with each other. That is, the distribution destination of the third original signal is the aggregation arithmetic device 60. Thereby, the aggregation calculation device 60 can generate the third control signal based on the third original signal. In the second embodiment, in the distribution destination information stored in the distribution destination storage unit 602, the second original signal and the control device 40 are associated with each other. That is, the distribution destination of the second original signal is the control device 40. Thereby, the aggregation calculation device 60 can generate the second control signal based on the second original signal. The control device 40 can generate the second control signal based on the second original signal.

  The program storage unit 603 stores a program for the generation unit 606 to execute an operation. The program stored in the program storage unit 603 may be a program acquired from the control device 40. The program stored in the program storage unit 603 may be the same as the program stored in the program storage unit 42 of the control device 40. The program stored in the program storage unit 203 may be a part of the program stored in the program storage unit 42 of the control device 40.

  The time storage unit 604 stores information representing the processing time when the control device 40 executes the program. The processing time when the control device 40 executes the program is, for example, the time required for the control device 40 to generate the second control signal. The time storage unit 604 may store information representing a processing time when the aggregate arithmetic device 60 executes a program. The processing time when the central processing unit 60 executes the program is, for example, the time required for the central processing unit 60 to generate the second control signal or the third control signal. The time storage unit 604 stores the response time measurement value acquired from the control device 40. The time storage unit 604 stores the average response time measurement value acquired from the control device 40.

  The distribution unit 605 determines the distribution destination of the third original signal to the aggregation arithmetic device 60 based on the distribution destination information. Thereby, the distribution unit 605 can determine that the third original signal is not transmitted to the control device 40. The distribution unit 605 determines the distribution destination of the second original signal to the control device 40 based on the distribution destination information.

  The distribution unit 605 selects the second control signal acquired from the control device 40 or the second control signal generated by the generation unit 606 based on the previous measured response time. That is, the distribution unit 605 selects the second control signal acquired from the control device 40 or the second control signal generated by the generation unit 606 based on whether or not a transmission delay has occurred in the communication line 30.

  For example, the distribution unit 605 selects the second control signal acquired from the control device 40 when the threshold is equal to or greater than the measurement value of the previous response time. That is, the distribution unit 605 selects the second control signal acquired from the control device 40 when there is no transmission delay in the communication line 30.

  For example, the distribution unit 605 selects the second control signal generated by the generation unit 606 when the threshold value is less than the measured value of the previous response time. That is, the distribution unit 206 selects the second control signal generated by the generation unit 606 when a transmission delay occurs in the communication line 30.

  The generation unit 606 generates a third control signal based on the third original signal so as to be in time for the target transmission time. When the distribution unit 605 selects the third control signal generated by the generation unit 606, the third control signal is generated based on the third original signal in time for the target transmission time.

  The aggregating unit 607 aggregates the second control signals acquired from the plurality of control devices 40. That is, the aggregation unit 607 collects a plurality of second control signals. Note that the aggregation unit 607 may not aggregate the second control signals acquired from the control device 40 when the number of the control devices 40 is one.

  The measurement unit 608 may measure the response time instead of the control device 40. The measurement unit 608, for example, the difference between the time when the second original signal is transmitted from the communication unit 601 to the control device 40 and the time when the communication unit 601 acquires the second control signal, and the control device 40 executes the program. The measurement value of the response time may be calculated based on the processing time in the case. The measurement unit 608 may cause the time storage unit 604 to store the calculated measured response time. The measurement unit 608 may cause the time storage unit 604 to store the calculated measurement value of the average response time.

  FIG. 8 is a sequence diagram illustrating an example of the operation of the control system 1b. The input device 10 transmits the first original signal, the second original signal, and the third original signal to the arithmetic device 20 (step S601). The arithmetic unit 20 acquires the first original signal, the second original signal, and the third original signal (step S602). The arithmetic unit 20 compares the measured value of the previous response time with the threshold value. The arithmetic device 20 determines the control device 40 as a distribution destination of the second original signal based on the distribution destination information. The arithmetic unit 20 determines the distribution destination of the third original signal as the aggregate arithmetic unit 60 based on the distribution destination information (step S603). The arithmetic device 20 transmits the second original signal and the third original signal to the aggregate arithmetic device 60 (step S604).

  The aggregation calculation device 60 acquires the second original signal and the third original signal (step S605). The aggregation calculation device 60 compares the measured value of the previous response time with a threshold value. The aggregation calculation device 60 determines the distribution destination of the second original signal to the control device 40 based on the distribution destination information (step S606). The aggregation calculation device 60 transmits the second original signal to the control device 40 (step S607).

  The control device 40 acquires the second original signal (step S608). The control device 40 generates a second control signal based on the second original signal (step S609). The control device 40 transmits the generated second control signal to the arithmetic device 20 (step S610).

  The computing device 20 generates a first control signal based on the first original signal (step S611). The computing device 20 transmits the first control signal to the output device 50 (step S612). The output device 50 acquires the first control signal from the arithmetic device 20 (step S613). The computing device 20 generates a second control signal based on the second original signal (step S614).

  The aggregation calculation device 60 generates a third control signal based on the third original signal (step S615). The aggregate calculation device 60 transmits the third control signal to the calculation device 20 (step S616). The arithmetic unit 20 acquires the third control signal (step S617). The computing device 20 transmits the third control signal to the output device 50 (step S618). The output device 50 acquires the third control signal from the arithmetic device 20 (step S619).

  The aggregation calculation device 60 generates a second control signal based on the second original signal (step S620). The aggregation calculation device 60 acquires the second control signal (step S621). The aggregate calculation device 60 transmits the second control signal to the calculation device 20 (step S622). The arithmetic unit 20 acquires the second control signal (step S623). The computing device 20 transmits the second control signal to the output device 50 (step S624). The output device 50 acquires the second control signal from the arithmetic device 20 (step S625).

  FIG. 9 is a flowchart illustrating an example of the operation of the arithmetic device 20. Step S701 corresponds to step S602 shown in FIG. Step S710 corresponds to step S612 shown in FIG. Step S712 corresponds to step S618 shown in FIG.

  The interface 201 acquires the first original signal, the second original signal, and the third original signal (step S701). The distribution unit 206 determines whether or not the threshold is equal to or greater than the measured value of the previous response time (step S702).

  When the threshold is equal to or greater than the measurement value of the previous response time (step S702: YES), the distribution unit 206 transmits the first original signal, the second original signal, and the third original signal to the aggregation processing device 60. It is determined for each original signal based on the distribution destination information (step S703).

  When the distribution unit 206 determines that the first original signal is not transmitted to the aggregation processing device 60 (step S703: NO), the generation unit 207 is based on the first original signal so as to be in time for the target transmission time. A first control signal is generated (step S704). When the distribution unit 206 determines that the second original signal and the third original signal are transmitted to the aggregation processing device 60 (step S703: YES), the communication unit 209 transmits the second original signal and the third original signal. The data is transmitted to the aggregation calculation device 60 (step S705).

  When the threshold value is less than the measured value of the previous response time (step S702: NO), the distribution unit 206 transmits the first original signal, the second original signal, and the third original signal to the aggregation processing device 60. It is determined for each original signal based on the distribution destination information (step S706).

  When the distribution unit 206 determines that the first original signal is not transmitted to the aggregation processing device 60 (step S706: NO), the generation unit 207 is based on the first original signal so as to be in time for the target transmission time. A first control signal is generated. The generation unit 207 generates a third control signal based on the third original signal so as to be in time for the target transmission time (step S707). When the distribution unit 206 determines that the second original signal and the third original signal are transmitted to the aggregation processing device 60 (step S706: YES), the communication unit 209 transmits the second original signal and the third original signal. The data is transmitted to the aggregation calculation device 60 (step S708).

  The distribution unit 206 determines whether or not the first control signal has been generated for all the acquired first original signals and the third control signal has been generated for all the acquired third original signals (step). S709). When the first original signal or the third original signal that has not been subjected to the generation process by the arithmetic device 20 remains (step S709: NO), the distribution unit 206 determines whether or not the step S704 or step S702 The process returns to step S707.

  When the first control signal is generated for all the acquired first original signals and the third control signal is generated for all the acquired third original signals (step S709: YES), the interface 201 One control signal is transmitted to the output device 50 (step S710). The aggregation unit 210 may aggregate a plurality of third control signals acquired from the aggregation calculation device 60 (step S711).

  When the generation unit 207 acquires the third control signal from the aggregation arithmetic device 60 before the generation unit 207 generates the third control signal, the interface 201 transmits the acquired third control signal to the output device 50. The interface 201 transmits the third control signal generated by the generation unit 207 to the output device 50 when the generation unit 207 has not acquired the third control signal from the aggregation processing device 60 before generating the third control signal. (Step S712). Each unit of the arithmetic device 20 returns the process to step S701.

  FIG. 10 is a flowchart illustrating an example of the operation of the aggregation calculation device 60. Step S801 corresponds to step S605 shown in FIG. Step S810 corresponds to step S616 shown in FIG. Step S812 corresponds to step S622 shown in FIG.

  The interface 201 acquires the second original signal and the third original signal (step S801). The distribution unit 605 determines whether or not the threshold is equal to or greater than the measured value of the previous response time (step S702).

  When the threshold is equal to or greater than the measured value of the previous response time (step S802: YES), the distribution unit 605 determines whether or not to transmit the second original signal and the third original signal to the aggregation processing device 60. A determination is made for each original signal based on the destination information (step S803).

  When the distribution unit 605 determines that the third original signal is not transmitted to the aggregation processing device 60 (step S803: NO), the generation unit 606 is based on the third original signal so as to be in time for the target transmission time. A third control signal is generated (step S804). When the distribution unit 605 determines that the second original signal is transmitted to the aggregate arithmetic device 60 (step S803: YES), the communication unit 209 transmits the second original signal to the aggregate arithmetic device 60 (step S805).

  When the threshold value is less than the measured value of the previous response time (step S802: NO), the distribution unit 605 determines whether or not to transmit the second original signal and the third original signal to the aggregation processing device 60. A determination is made for each original signal based on the destination information (step S806).

  When the distribution unit 605 determines that the third original signal is not transmitted to the aggregation processing device 60 (step S806: NO), the generation unit 606 is based on the second original signal so as to be in time for the target transmission time. A second control signal is generated. The generation unit 606 generates a third control signal based on the third original signal so as to be in time for the target transmission time (step S807). When the distribution unit 605 determines that the second original signal is transmitted to the aggregate arithmetic device 60 (step S806: YES), the communication unit 209 transmits the second original signal to the aggregate arithmetic device 60 (step S808).

  The distribution unit 605 determines whether or not the second control signal has been generated for all the acquired second original signals and the third control signal has been generated for all the acquired third original signals (step). S809). When the second original signal or the third original signal that is not subjected to the generation process by the arithmetic device 20 remains (step S809: NO), the distribution unit 605 determines whether or not the step S804 or the step S802 depends on the determination result in step S802. The process returns to step S807.

  If the second control signal is generated for all the acquired second original signals and the third control signal is generated for all the acquired third original signals (step S809: YES), the communication unit 601 The third control signal is transmitted to the output device 50 (step S810). The aggregating unit 607 aggregates a plurality of second control signals acquired from the plurality of control devices 40 (step S811).

  When the generation unit 606 acquires the second control signal from the control device 40 before the generation unit 606 generates the second control signal, the communication unit 601 transmits the acquired second control signal to the output device 50. When the generation unit 606 has not acquired the second control signal from the control device 40 before the generation unit 606 generates the second control signal, the communication unit 601 transmits the second control signal generated by the generation unit 606 to the output device 50. (Step S812). Each unit of the central processing unit 60 returns the process to step S801.

  FIG. 11 is a flowchart illustrating an example of the operation of the control device 40. Step S901 corresponds to step S608 shown in FIG. Step S902 corresponds to step S609 shown in FIG. Step S903 corresponds to step S610 shown in FIG.

  The communication unit 41 acquires the second original signal from the aggregation processing device 60 (step S901). The control unit 43 generates a second control signal based on the program stored in the program storage unit 42 and the second original signal (step S902). The communication unit 41 transmits the second control signal to the aggregation calculation device 60 (step S903).

  As described above, the communication unit 209 according to the second embodiment transmits the original signal to the plurality of control devices 60 via the aggregation processing device 60 that is a relay device that relays communication. Thereby, the arithmetic device 20 of the second embodiment can control the output device 50 to be controlled within a certain time even when a transmission delay occurs in the communication line 30.

(Third embodiment)
The third embodiment is different from the first embodiment in that the control system 1c includes a terminal 70. In the third embodiment, only differences from the first embodiment will be described.

  FIG. 12 is a diagram illustrating an example of a configuration of a control system 1 c including the arithmetic device 20. The control system 1 c includes an input device 10, an arithmetic device 20, a communication line 30, a control device 40, an output device 50, and a terminal 70. There may be a plurality of terminals 70.

  The terminal 70 is an information processing device such as a personal computer device or a tablet terminal. The terminal 70 includes a display unit 71 and an operation unit 72. The display unit 71 is a display device. The display unit 71 displays information for identifying the device that has executed the program. For example, when the arithmetic device 20-1 executes a program stored in the program storage unit 203, the display unit 71 displays an identification number assigned to the arithmetic device 20-1. The operation unit 72 is an interface such as a keyboard and a mouse. The operation unit 72 receives an operation for switching an image to be displayed on the display unit 71. The operation unit 72 receives an operation for switching an image to be displayed on the display unit 71.

  When the generation unit 207 executes the program, the communication unit 209 of the arithmetic device 20 transmits the identification information assigned to the own device to the terminal 70. The display unit 71 of the terminal 70 displays the identification number acquired from the arithmetic device 20. That is, the communication unit 209 causes the display unit 71 to display information indicating its own device when the generation unit 207 generates a control signal based on the original signal.

  As described above, the communication unit 209 according to the third embodiment transmits information indicating the computing device 20 that has executed the program to the terminal 70. Thereby, the terminal 70 of the third embodiment can make the user grasp the arithmetic device 20 that has executed the program among the plurality of arithmetic devices 20.

(Fourth embodiment)
The fourth embodiment is different from the third embodiment in that the control system 1d includes an aggregation calculation device 60. In the fourth embodiment, only differences from the third embodiment will be described.

  FIG. 13 is a diagram illustrating an example of a configuration of a control system 1 d including the arithmetic device 20. The control system 1 c includes an input device 10, an arithmetic device 20, a communication line 30, a control device 40, an output device 50, an aggregate arithmetic device 60, and a terminal 70. There may be a plurality of terminals 70.

  The communication unit 209 transmits information indicating the arithmetic device 20 that has executed the program to the terminal 70. The communication unit 601 transmits information indicating the aggregate arithmetic device 60 that has executed the program to the terminal 70. The display unit 71 displays the identification number assigned to the arithmetic device 20 that has executed the program stored in the program storage unit 203. The display unit 71 displays the identification number assigned to the aggregate arithmetic device 60 that has executed the program stored in the program storage unit 603.

  As described above, the communication unit 209 according to the fourth embodiment transmits information indicating the computing device 20 that has executed the program to the terminal 70. The communication unit 601 according to the fourth embodiment transmits information indicating the aggregate arithmetic device 60 that has executed the program to the terminal 70. Thereby, the terminal 70 according to the fourth embodiment can allow the user to grasp the device that has executed the program among the plurality of arithmetic devices 20 and the aggregate arithmetic device 60.

  According to at least one embodiment described above, by including a generation unit that generates a control signal based on an original signal according to a total value of a time required for the control device to generate a control signal and a communication time. Even when a transmission delay occurs in the communication line, the device to be controlled can be controlled within a certain time.

  As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1a ... Control system, 1b ... Control system, 1c ... Control system, 1d ... Control system, 10 ... Input device, 20 ... Arithmetic device, 30 ... Communication line, 40 ... Control device, 41 ... Communication part, 42 ... Program storage part , 43 ... control unit, 50 ... output device, 60 ... aggregation processing device, 70 ... terminal, 71 ... display unit, 72 ... operation unit, 100 ... local network, 110 ... local network, 201 ... interface, 202 ... distribution destination storage , 203 ... Program storage unit, 204 ... Time storage unit, 205 ... Result storage unit, 206 ... Distribution unit, 207 ... Generation unit, 208 ... Comparison unit, 209 ... Communication unit, 210 ... Aggregation unit, 211 ... Measurement unit, 601: Communication unit, 602 ... Distribution destination storage unit, 603 ... Program storage unit, 604 ... Time storage unit, 605 ... Distribution unit, 606 ... Generation unit, 607 ... Collection Department, 608 ... measurement unit

Claims (7)

A measuring unit for measuring the communication time between the own device and the control device;
A transmission unit that transmits an original signal, which is a signal for generating a control signal, to the control device;
An acquisition unit for acquiring from the control device a control signal generated by the control device based on the original signal;
A generation unit that generates a control signal based on the original signal according to a total value of a time required for the control device to generate a control signal and the communication time;
Of the control signal acquired from the control device and the control signal generated by the generation unit, an interface for transmitting a control signal that can be transmitted at an earlier time;
An arithmetic device comprising: A comparison unit for comparing the original signals acquired at different timings;
The arithmetic unit according to claim 1, wherein the interface transmits a control signal generated in advance based on the original signal when the original signal acquired at different timings is a signal indicating the same content.   The arithmetic unit according to claim 1, wherein the generation unit generates a control signal based on the original signal classified for each program executed by the generation unit.   The computing device according to claim 1, wherein the transmission unit transmits the original signal to a plurality of the control devices via a relay device that relays communication.   The arithmetic unit according to claim 1, wherein when the generation unit generates a control signal based on the original signal, the transmission unit displays information indicating the own device on a display device. An arithmetic method in an arithmetic device,
Measuring the communication time between the device itself and the control device;
Transmitting an original signal, which is an original signal for generating a control signal, to the control device;
Obtaining from the control device a control signal generated by the control device based on the original signal;
Generating a control signal based on the original signal according to a total value of a time required for the control device to generate a control signal and the communication time;
Transmitting a control signal that can be transmitted at an earlier time among the control signal acquired from the control device and the control signal generated by the device;
Calculation method including On the computer,
A procedure for measuring the communication time between the own device and the control device;
A procedure for transmitting an original signal, which is an original signal for generating a control signal, to the control device;
A procedure for acquiring from the control device a control signal generated by the control device based on the original signal;
A procedure for generating a control signal based on the original signal in accordance with a total value of a time required for the control device to generate a control signal and the communication time;
Among the control signal acquired from the control device and the control signal generated by the device itself, a procedure for transmitting a control signal that can be transmitted at an earlier time;
Arithmetic program to execute.

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