WO2024070099A1 - Data processing system, physical quantity measuring device, data collection device, data processing method, data provision method, and data collection method - Google Patents

Abstract

This data processing system includes a physical quantity measuring device and a data collection device. This physical quantity measuring device transmits a physical quantity data string constituted by a plurality of physical quantity data, which are obtained when the physical quantity is measured by a physical quantity sensor under sampling conditions, so that the measurement order thereof can be determined, and a time elapsed since the last measurement, which is obtained by measuring, with a timer count unit, the time elapsed after the physical quantity was measured last time by the physical quantity sensor, to the data collection device. The data collection device specifies a measurement time for each of the plurality of physical quantity data, which constitute the physical quantity data string, on the basis of the current time measured by a time measurement unit and the time elapsed since the last measurement.

Description

DATA PROCESSING SYSTEM, PHYSICAL QUANTITY MEASURING APPARATUS, DATA COLLECTION APPARATUS, DATA PROCESSING METHOD, DATA PROVIDING METHOD, AND DATA COLLECTION METHOD

The present invention relates to a data processing system, a physical quantity measuring device, a data collecting device, a data processing method, a data providing method, and a data collecting method.
This application claims priority based on Japanese Patent Application No. 2022-156371, filed on September 29, 2022, the contents of which are incorporated herein by reference.

　Traditionally, a measuring device is attached to an object to be monitored to monitor the state of the device. For example, Patent Document 1 discloses a power supply monitor device that adds the date and time (measurement time) measured by a real-time clock (RTC) circuit to monitor information extracted by a power supply monitor information extraction means, and transmits the information to a remote monitoring system.

Japanese Patent Publication No. 2002-34181

The power supply monitoring device disclosed in Patent Document 1 is equipped with a real-time clock circuit for adding the measurement time to the monitoring information, which causes an increase in costs. Therefore, in order to reduce costs, it is considered to eliminate the real-time clock circuit. However, simply eliminating the real-time clock circuit poses the problem that, when analyzing the monitoring information, it becomes unclear at what point in time the monitoring information was acquired, making it difficult to analyze the monitoring information in chronological order, for example.

In view of the above-mentioned problems, the present invention aims to provide a data processing system, a physical quantity measuring device, a data collecting device, a data processing method, a data providing method, and a data collecting method that make it possible to identify the measurement time on the physical quantity data collecting device side without providing a real-time clock circuit on the measuring device side that measures the physical quantity.

In order to achieve the above object, a data processing system according to one aspect of the present invention comprises:
A data processing system including one or more physical quantity measuring devices and one or more data collecting devices configured to be able to communicate with the physical quantity measuring devices,
The physical quantity measuring device includes:
A physical quantity sensor that measures a physical quantity of a measurement target;
a storage unit configured to store physical quantity data obtained by measuring the physical quantity using the physical quantity sensor in a ring buffer format;
a timer count unit that counts a count value over time;
a measurement processing unit that stores in the storage unit the physical quantity data obtained when the physical quantity is measured by the physical quantity sensor under a predetermined sampling condition based on the count value counted by the timer count unit;
a time measurement processing unit that measures an elapsed time since the physical quantity sensor last measured the physical quantity as an elapsed time since the last measurement by the timer counting unit;
a transmission processing unit that transmits to the data collecting device, when a predetermined transmission condition is satisfied, a physical quantity data sequence configured so that a measurement order of the physical quantity data can be determined based on the plurality of physical quantity data stored in the storage unit, and the elapsed time since the last measurement measured by the timing processing unit,
The data collection device includes:
a time measurement unit that measures the current time;
a reception processing unit that receives the physical quantity data string and the elapsed time since the last measurement from the physical quantity measuring device;
a time determination processing unit that determines a measurement time when a physical quantity was measured as the physical quantity data for each of the plurality of physical quantity data constituting the physical quantity data sequence received by the reception processing unit, based on the current time measured by the time measurement unit and the elapsed time since last measurement received by the reception processing unit;
The physical quantity data sequence received by the reception processing unit is associated with the measurement time identified by the time identification processing unit for each piece of physical quantity data, and the associated measurement time is stored in a storage device.

In the data processing device according to the present invention, the physical quantity measuring device transmits to the data collecting device a physical quantity data string configured so that the measurement order can be determined from the multiple physical quantity data obtained when the physical quantity sensor measures each physical quantity under sampling conditions, and the time since last measurement measured by the timer counting unit as the time elapsed since the physical quantity sensor last measured the physical quantity, and the data collecting device determines the measurement time for each of the multiple physical quantity data constituting the physical quantity data string based on the current time measured by the time measuring unit and the time since last measurement. Therefore, the data collecting device can determine the measurement time for each of the physical quantity data without providing a real-time clock circuit on the physical quantity measuring device side.

　Problems, configurations and effects other than those mentioned above will be made clear in the detailed description of the invention described below.

1 is an overall configuration diagram showing an example of a data processing system 1. FIG. 2 is a block diagram showing an example of a physical quantity measuring device 3. FIG. 2 is a functional explanatory diagram showing an example of a physical quantity measuring device 3. FIG. 2 is a block diagram showing an example of a data collection device 4. FIG. 2 is a functional explanatory diagram showing an example of a data collection device 4. FIG. 9 is a hardware configuration diagram showing an example of a computer 900 constituting each device. 4 is a flowchart showing an example of an operation of the physical quantity measuring device 3 (data processing device 31) and the data collecting device 4.

Below, an embodiment for carrying out the present invention will be described with reference to the drawings. Below, the scope necessary for the explanation to achieve the object of the present invention will be shown in a schematic manner, and the scope necessary for the explanation of the relevant parts of the present invention will be mainly described.

FIG. 1 is an overall configuration diagram showing an example of a data processing system 1. The data processing system 1 processes physical quantity data obtained when the physical quantity of a measurement target is measured by the pump device 2, and functions as a system for managing the pump device 2.

The data processing system 1 mainly comprises a pump device 2 to be monitored, a physical quantity measuring device 3 that can be attached to the pump device 2, a data collection device 4 configured to be able to communicate with the physical quantity measuring device 3, a data management device 5 configured to be able to communicate with the data collection device 4, and a terminal device 6 configured to be able to communicate with the data management device 5. Each of the devices 2-6 is, for example, configured as a general-purpose or dedicated computer (see FIG. 6 described below), and is configured to be able to mutually send and receive various data via a network 7. The number of each of the devices 2-6 is not limited to the example in FIG. 1, and may be one or more.

The pump device 2 is a device that transports any fluid, and is installed and used in, for example, infrastructure facilities (waterworks, sewage systems, etc.) and plant facilities (oil refineries, power generation, manufacturing, chemical processes, etc.). The pump device 2 includes a pump section 20, a motor 21 that serves as the drive source for the pump device 2, a coupling section 22 that transmits the drive force generated by the motor 21 to the pump section 20, and a pump control panel 23 that controls the operation of the pump device 2.

The pump section 20 is composed of, for example, an impeller, a rotating shaft, bearings, a mechanical seal, a gland packing, a casing, piping, etc. The motor 21 is composed of, for example, an inverter motor or other type of motor. The coupling section 22 is composed of, for example, a coupling, a coupling, a joint, bearings, etc. The pump control panel 23 is, for example, an embedded computer, and controls the rotational operation of the motor 21 based on the set values of the operating conditions set by the user (the person who installs the pump device 2 or the manager, etc.) and the detection values of sensors (not shown) provided in each of the pump section 20 and the motor 21. The pump device 2 may be configured to be able to communicate with each of the devices 3 to 6.

The physical quantity measuring device 3 is a device that measures a physical quantity resulting from the pump device 2, and is attached, for example, to any position of the pump section 20, the motor 21, or the joint section 22. The physical quantity measuring device 3 includes a physical quantity sensor 30 that measures the physical quantity of the measurement target, a data processing device 31 that processes physical quantity data obtained when the physical quantity is measured by the physical quantity sensor 30, and a housing 300 that incorporates the physical quantity sensor 30 and the data processing device 31 and can be attached to the pump device 2.

The physical quantity to be measured by the physical quantity sensor 30 is, for example, acceleration (vibration), speed, displacement, environmental sound, etc. The physical quantity sensor 30 is composed of, for example, an acceleration sensor capable of measuring acceleration, a speed sensor capable of measuring speed, a displacement sensor capable of measuring displacement, a microphone capable of measuring environmental sound, etc. Note that the physical quantity to be measured is not limited to the above examples, and may be, for example, pressure, load, temperature, current value, voltage value, etc. In that case, a physical quantity sensor 30 such as a pressure sensor, load sensor, temperature sensor, current sensor, voltage sensor, etc. is used. Furthermore, the physical quantity sensor 30 may include multiple sensors for measuring multiple physical quantities, respectively.

The data processing device 31 is a device for processing physical quantity data obtained by converting analog signals indicating physical quantities measured by the physical quantity sensor 30 into digital signals. The data processing device 31 may include an A/D conversion circuit that converts analog signals into digital signals, or may obtain physical quantity data from the physical quantity sensor 30 after it has been converted into a digital signal.

The mounting position of the housing 300 is determined according to the physical quantity to be measured. Note that one physical quantity measuring device 3 may be attached to the pump device 2, or, as shown in FIG. 1, multiple physical quantity measuring devices 3 may be attached. When multiple physical quantity measuring devices 3 are attached, they may measure a common physical quantity or different physical quantities.

The data collection device 4 is used by a user (such as the manager of the pump device 2 or an inspection/repair worker) at the installation location of the pump device 2 to collect data from the physical quantity measuring device 3 (specifically, the data processing device 31). The data collection device 4 is composed of a portable computer such as a smartphone or tablet. When the user of the data collection device 4 approaches within a predetermined distance from the physical quantity measuring device 3, for example, communication is established between the data collection device 4 and the physical quantity measuring device 3, and the data collection device 4 collects data from the physical quantity measuring device 3. In addition, the data collection device 4 has programs such as applications and browsers installed and accepts various input operations. In addition, the data collection device 4 displays the data collected from the physical quantity measuring device 3 on a display screen and transmits the data to the data management device 5.

The data management device 5 has a database 50 for managing the data collected by the data collection device 4, and is configured, for example, as a server-type computer or a cloud-type computer. The data management device 5 stores the data received from the data collection device 4 in the database 50, and transmits notification information to the terminal device 6 when the data satisfies a predetermined notification condition. Furthermore, when the data management device 5 receives a reference request for the data stored in the database 50 from the terminal device 6, it transmits reference information for the database 50 to the terminal device 6.

The terminal device 6 is a device used by a user (such as the manager of the pump device 2 or an inspection/repair worker) who is located in a remote location away from the installation location of the pump device 2, and is configured, for example, as a stationary computer or a portable computer. Programs such as applications and browsers are installed on the terminal device 6, and the terminal device 6 accepts various input operations and displays various information (notification information and reference information for the database 50) on the display screen. The terminal device 6 may also serve as the data collection device 4.

The network 7 is configured by wired or wireless communication, or a combination of wired and wireless communication, according to any communication standard. Specifically, for example, a standardized communication network such as the Internet, or a communication network managed within a building such as a local network, or a combination of these communication networks can be used. Furthermore, an international standard is typically used as the communication standard for wireless communication. Examples of international standard communication means include IEEE802.15.4, IEEE802.15.1, IEEE802.15.11a, 11b, 11g, 11n, 11ac, 11ad, ISO/IEC14513-3-10, IEEE802.15.4g, etc. Also, methods such as Bluetooth (registered trademark), Bluetooth Low Energy, Wi-Fi, ZigBee (registered trademark), Sub-GHz, EnOcean (registered trademark), and LTE can be used.

FIG. 2 is a block diagram showing an example of a physical quantity measuring device 3. FIG. 3 is a functional explanatory diagram showing an example of a physical quantity measuring device 3. In addition to the physical quantity sensor 30, the physical quantity measuring device 3 includes, as its main components, a control unit 32, a timer count unit 33, a memory unit 34, a communication unit 35, and a power supply 36 that constitute a data processing device 31.

The control unit 32 functions as a measurement processing unit 320, a timing processing unit 321, and a transmission processing unit 322, for example, by executing a data processing program 340 stored in the memory unit 34.

The timer count unit 33 is, for example, configured with an integrated circuit incorporating a timer circuit, and counts the count value C as time passes. The timer count unit 33 operates by accepting various commands from the control unit 32. Examples of commands include reading or resetting the count value C, starting or ending a count, and the period during which an interrupt signal is generated based on the count value C. The timer count unit 33 may be incorporated into the control unit 32 and realized as part of the functions of the control unit 32.

The count value C may be, for example, a value obtained by counting the internal clock (clock count value), or a value obtained by converting the clock count value into time based on the clock period (or clock frequency) of the internal clock (time count value). If the clock period is, for example, 0.1 ms, then a clock count value of "600,000 times" is converted into a time count value of "60,000 ms", or in other words, "60 s". In this embodiment, a case will be described in which a time count value is used as the count value C.

The memory unit 34 stores various programs (such as the data processing program 340) and data (such as setting information 341, ring buffer data 342, time since last measurement Tf, etc.) used in the operation of the physical quantity measuring device 3.

In the setting information 341, for example, sampling conditions are stored as setting parameters referenced by the control unit 32 when the physical quantity measuring device 3 operates. The setting information 341 is also configured to be configurable via the data collecting device 4. The sampling conditions are conditions that determine the measurement time points at which the physical quantity is measured by the physical quantity sensor 30, and are set, for example, by a sampling period or a sampling frequency. In this embodiment, a case will be described where the sampling period Sp is set as the sampling condition.

The ring buffer data 342 stores the physical quantity data D in a ring buffer format when the physical quantity is measured by the physical quantity sensor 30. The ring buffer data 342 has a memory area (physical quantity data memory area) that is secured according to the maximum number of pieces of physical quantity data D that can be stored. As shown in FIG. 3, the ring buffer data 342 is managed by a next storage memory address An indicating the memory address A when the physical quantity data D will be stored next, and a next storage index In indicating the index I when the physical quantity data D will be stored next.

3, the ring buffer data 342 has a data structure in which, for each memory address A arranged in the physical quantity data memory area, an index I to which the measurement order of the physical quantity data D is assigned by, for example, a serial number, a count value C by the timer count unit 33 at the time of measuring the physical quantity data D, and a buffer for storing the physical quantity data D measured by the physical quantity sensor 30 in association with each other. Note that the count value C may be omitted, or if the count value C is, for example, a cumulative value and can be substituted for information indicating the measurement order of the physical quantity data D, the index I may be omitted.

The communication unit 35 functions as a communication interface for transmitting and receiving various data, for example, to and from the data collection device 4 via the network 7. The power supply 36 is composed of, for example, a primary battery, a secondary battery, a solar cell, a fuel cell, etc., and supplies power to each part of the physical quantity measuring device 3. The power supply 36 may receive power from the pump device 2.

The measurement processing unit 320 stores the physical quantity data D obtained when the physical quantity sensor 30 measures the physical quantity under the sampling conditions defined in the setting information 341 in the ring buffer data 342 of the memory unit 34 based on the count value C counted by the timer count unit 33.

For example, the measurement processing unit 320 sends a command to the timer counting unit 33 to indicate the generation period of the interrupt signal in order to make the timer counting unit 33 generate an interrupt signal according to the sampling period Sp as a sampling condition. When the count value C by the timer counting unit 33 that has received the command satisfies the generation period of the interrupt signal (=sampling period Sp), the measurement processing unit 320 receives the interrupt signal from the timer counting unit 33, measures the physical quantity by the physical quantity sensor 30 at that timing (measurement time point), and acquires the physical quantity data D. Then, the measurement processing unit 320 stores the index I indicated by the next storage index In and the count value C by the timer counting unit 33 when the interrupt signal was accepted in the buffer indicated by the next storage memory address An, together with the acquired physical quantity data D. Furthermore, the measurement processing unit 320 updates the next storage memory address An to the memory address A indicating the next buffer (in the case of the last buffer, it returns to the first buffer), and updates the next storage index In by incrementing the index I.

The measurement processing unit 320 may acquire the physical quantity data D by performing a predetermined calculation on the physical quantity measured by the physical quantity sensor 30. The calculation on the physical quantity data D is, for example, a calculation to obtain a moving average of the physical quantity data D for a predetermined number of data points having different measurement times, such as a simple moving average or a weighted moving average.

The timing processing unit 321 measures the time elapsed since the physical quantity sensor 30 last measured the physical quantity as physical quantity data D as the elapsed time since last measurement Tf. For example, the timing processing unit 321 sends a command to the timer counting unit 33 to instruct the reading of the count value C at the measurement time when the physical quantity sensor 30 measured the physical quantity as physical quantity data D and at the target time for measuring the elapsed time since last measurement Tf. In this way, the timing processing unit 321 measures the elapsed time since last measurement Tf by taking the difference between the count value C by the timer counting unit 33 at the measurement time of the physical quantity data D and the count value C by the timer counting unit 33 at the target time for measuring.

The timing processing unit 321 may measure the elapsed time Tf since the last measurement using the count value C corresponding to the physical quantity data D last stored in the ring buffer data 342 as the count value C at the measurement time point. The timing processing unit 321 may also measure the elapsed time Tf since the last measurement using the count value C at the target time point by sending a command to the timer count unit 33 to reset the count value C at the measurement time point of the physical quantity data D.

When a predetermined transmission condition is satisfied, the transmission processing unit 322 transmits to the data collecting device 4 a physical quantity data string Dset1 composed of multiple physical quantity data D stored in the ring buffer data 342 of the storage unit 34, and the elapsed time since last measurement Tf timed by the timing processing unit 321 at the time when the transmission condition is satisfied (time to be measured). The transmission processing unit 322 may transmit the sampling condition defined in the setting information 341 together with the physical quantity data string Dset1 and the elapsed time since last measurement Tf to the data collecting device 4.

The transmission condition may be, for example, when a data request for physical quantity data D is received from the data collection device 4, or when the number of data points of physical quantity data D stored in the ring buffer data 342 exceeds a predetermined reference value.

The physical quantity data string Dset1 is a data set consisting of a plurality of physical quantity data D configured to enable the measurement order of the physical quantity data D to be determined. The physical quantity data string Dset1 includes at least one of an index I and a count value C corresponding to each of the physical quantity data D in order to enable the measurement order of the physical quantity data D to be determined. The time elapsed since the last measurement Tf corresponds to the time elapsed from the last measurement of a physical quantity as the physical quantity data D among the plurality of physical quantity data D constituting the physical quantity data string Dset1 to the time when the transmission condition is satisfied, by being timed by the timing processing unit 321 at the time when the transmission condition is satisfied. In FIG. 3, the physical quantity data string Dset1 is configured of 100 pieces of physical quantity data D1 to D100, and includes an index I and a count value C. In addition, the time elapsed since the last measurement Tf is illustrated as the time elapsed from the measurement time of the last measured physical quantity data D100.

FIG. 4 is a block diagram showing an example of a data collection device 4. FIG. 5 is a functional explanatory diagram showing an example of a data collection device 4. The data collection device 4 includes, as its main components, a control unit 40, a time measurement unit 41, a memory unit 42, a communication unit 43, an input unit 44, and an output unit 45.

The control unit 40 functions as a reception processing unit 400, a time identification processing unit 401, and a storage processing unit 402, for example, by executing a data collection program 420 stored in the storage unit 42.

The time measurement unit 41 is formed, for example, by an integrated circuit that incorporates a real-time clock (RTC) circuit, and measures the current time Tc. The time measurement unit 41 operates by accepting various commands from the control unit 40. Examples of commands include reading and setting the current time Tc. The time measurement unit 41 may be incorporated into the control unit 40 and realized as part of the functions of the control unit 40.

The storage unit 42 stores various programs (such as the data collection program 420) and data (such as the setting information 421) used in the operation of the data collection device 4. The setting information 421 stores, for example, setting parameters (such as data collection conditions) referenced by the control unit 40 when the data collection device 4 operates. The setting information 421 is also configured to be configurable, for example, via the data collection device 4.

The communication unit 43 functions as a communication interface that transmits and receives various data between, for example, the physical quantity measuring device 3 and the data management device 5 via the network 7. The input unit 44 and the output unit 45 function as a user interface by accepting input operations from the user and outputting various information via a display screen or voice.

When a predetermined collection condition is satisfied, the reception processing unit 400 transmits a data request for the physical quantity data D to the physical quantity measuring device 3, and receives the physical quantity data string Dset1 and the time since last measurement Tf from the physical quantity measuring device 3 in response. For example, the reception processing unit 400 transmits a data request for the physical quantity data D to the physical quantity measuring device 3 when, as a collection condition, a user's input operation instructing collection of physical data is accepted, when a data collection condition defined in the setting information 421 is satisfied, or when an execution command is received from the data management device 5 instructing collection of physical data. The reception processing unit 400 may further receive sampling conditions from the physical quantity measuring device 3 along with the physical quantity data string Dset1 and the time since last measurement Tf.

The time determination processing unit 401 determines the measurement time Ts when the physical quantity was measured as the physical quantity data D for each of the multiple physical quantity data D constituting the physical quantity data string Dset1 received by the receiving processing unit 400, based on the current time Tc measured by the time measurement unit 41 and the time since the last measurement Tf received by the receiving processing unit 400.

For example, the time determination processing unit 401 obtains the current time Tc measured by the time measurement unit 41 by sending a command to the time measurement unit 41 to instruct the time measurement unit 41 to read out the current time Tc. Then, when the physical quantity data string Dset1 is composed of 100 points of physical quantity data D1 to D100 and includes count values C1 to C100, for example, as illustrated in Figures 3 and 5, the time determination processing unit 401 determines the time obtained by subtracting the elapsed time Tf since the last measurement from the current time Tc based on the current time Tc as the measurement time Ts100 (= Tc - Tf) of the last measured physical quantity data D100. Then, the time determination processing unit 401 determines the time obtained by subtracting the count value C100 from the measurement time Ts100 as the measurement time Ts99 (= T100 - C100) of the physical quantity data D99 measured one sampling period before the last measurement point. The time determination processing unit 401 then determines the time obtained by subtracting the count value C99 from the measurement time Ts99 as the measurement time Ts98 (=T99-C99) of the physical quantity data D98 measured two sampling periods before the last measurement point. By repeating this process, the time determination processing unit 401 determines the measurement times Ts1 to Ts97 for each of the physical quantity data D1 to D97.

If the time determination processing unit 401 further receives sampling conditions, the time determination processing unit 401 may determine a measurement time Ts for each of the multiple physical quantity data D constituting the physical quantity data string Dset1 based on the current time Tc, the time elapsed since the last measurement Tf, and the sampling conditions. In that case, when determining the measurement time Ts, instead of subtracting the count value C, the time determination processing unit 401 may subtract, for example, a time equivalent to the sampling period Sp based on the sampling conditions.

The storage processing unit 402 associates the measurement time Ts identified by the time identification processing unit 401 with each piece of physical quantity data D to the physical quantity data string Dset1 received by the reception processing unit 400, and stores the data in the database 50 as a storage device. Specifically, the storage processing unit 402 associates the physical quantity data D and the measurement time Ts with each piece of physical quantity data D to generate a physical quantity data string Dset2 with the measurement time, which is composed of the physical quantity data D and the measurement time Ts. The physical quantity data string Dset2 with the measurement time is then transmitted by the storage processing unit 402 to the data management device 5, where it is stored in the database 50.

The physical quantity data string Dset2 with the measurement time may be displayed on the display screen of the data collecting device 4. In addition, identification information for identifying at least one of the pump device 2 and the physical quantity measuring device 3 (such as the device ID of the pump device 2 or the device ID of the physical quantity measuring device 3) may be added to the physical quantity data string Dset2 with the measurement time by the storage processing unit 402 (which may be the transmission processing unit 322 of the physical quantity measuring device 3). In this case, the physical quantity data string Dset2 with the measurement time may be stored in the database 50 in a state associated with the identification information.

FIG. 6 is a hardware configuration diagram showing an example of a computer 900 that constitutes each device. Each of the pump device 2 (mainly the pump control panel 23), the physical quantity measuring device 3 (mainly the data processing device 31), the data collecting device 4, the data management device 5, and the terminal device 6 is configured by a general-purpose or dedicated computer 900.

As shown in FIG. 6, the computer 900 includes, as its main components, a bus 910, a processor 912, a memory 914, an input device 916, an output device 917, a display device 918, a storage device 920, a communication I/F (interface) unit 922, an external device I/F unit 924, an I/O (input/output) device I/F unit 926, and a media input/output unit 928. Note that the above components may be omitted as appropriate depending on the application for which the computer 900 is used.

The processor 912 is composed of one or more arithmetic processing devices (CPU (Central Processing Unit), MPU (Micro-Processing Unit), DSP (Digital Signal Processor), GPU (Graphics Processing Unit), NPU (Neural Processing Unit), etc.) and operates as a control unit that controls the entire computer 900. The memory 914 stores various data and programs 930, and is composed of, for example, volatile memory (DRAM, SRAM, etc.) that functions as main memory, non-volatile memory (ROM), flash memory, etc.

The input device 916 is, for example, a keyboard, a mouse, a numeric keypad, an electronic pen, etc., and functions as an input unit. The output device 917 is, for example, a sound (audio) output device, a vibration device, etc., and functions as an output unit. The display device 918 is, for example, a liquid crystal display, an organic EL display, electronic paper, a projector, etc., and functions as an output unit. The input device 916 and the display device 918 may be integrated, such as a touch panel display. The storage device 920 is, for example, a HDD, an SSD, etc., and functions as a memory unit. The storage device 920 stores various data necessary for the execution of the operating system and the program 930.

The communication I/F unit 922 is connected to a network 940 (which may be the same as the network 7 in FIG. 1) such as the Internet or an intranet by wire or wirelessly, and functions as a communication unit that transmits and receives data to and from other computers according to a predetermined communication standard. The external device I/F unit 924 is connected to an external device 950 such as a camera, printer, scanner, or reader/writer by wire or wirelessly, and functions as a communication unit that transmits and receives data to and from the external device 950 according to a predetermined communication standard. The I/O device I/F unit 926 is connected to an I/O device 960 such as various sensors and actuators, and functions as a communication unit that transmits and receives various signals and data, such as detection signals from sensors and control signals to actuators, between the I/O device 960. The media input/output unit 928 is composed of, for example, a drive device such as a DVD drive or a CD drive, a memory card slot, and a USB connector, and reads and writes data to and from media (non-temporary storage media) 970 such as DVDs, CDs, memory cards, and USB memories.

In computer 900 having the above configuration, processor 912 calls up program 930 stored in storage device 920 into memory 914, executes it, and controls each part of computer 900 via bus 910. Program 930 may be stored in memory 914 instead of storage device 920. Program 930 may be recorded on media 970 in an installable file format or an executable file format, and provided to computer 900 via media input/output unit 928. Program 930 may be provided to computer 900 by downloading it over network 940 via communication I/F unit 922. In addition, the computer 900 may realize various functions that are realized by the processor 912 executing the program 930 using hardware such as an FPGA (Field-Programmable Gate Array) or an ASIC (Application Specific Integrated Circuit).

Computer 900 may be, for example, a desktop computer or a portable computer, and may be any type of electronic device. Computer 900 may be a client computer, a server computer, or a cloud computer, or may be, for example, an embedded computer called a control panel, controller (including a microcomputer, programmable logic controller, or sequencer), etc.

(Data processing method)
Fig. 7 is a flowchart showing an example of the operation of the physical quantity measuring device 3 (data processing device 31) and the data collecting device 4. A series of processes (data processing method) shown in Fig. 7 is executed by a process (data providing method) by the physical quantity measuring device 3 and a process (data collecting method) by the data collecting device 4.

Below, a case will be described with reference to FIG. 7 where the data collection device 4 receives a user input operation instructing collection of physical quantity data D when the physical quantity measuring device 3 repeatedly measures a physical quantity according to the sampling period Sp as the sampling condition defined in the setting information 341.

First, in step S100, when the measurement processing unit 320 of the physical quantity measuring device 3 receives an interrupt signal at a timing (measurement time point) based on the sampling condition (sampling period Sp in this embodiment) based on the count value C measured by the timer count unit 33, the measurement processing unit 320 measures the physical quantity using the physical quantity sensor 30 and acquires physical quantity data D. Then, the measurement processing unit 320 stores the index I and count value C together with the acquired physical quantity data D in the ring buffer data 342. At that time, the measurement processing unit 320 updates the next storage memory address An and the next storage index In.

Each time a measurement time point that satisfies the sampling conditions arrives, the measurement processing unit 320 repeats step S100 described above, and physical quantity data D is accumulated in the ring buffer data 342.

On the other hand, in step S200, when the reception processing unit 400 of the data collection device 4 receives a user input operation instructing the collection of physical quantity data D, the reception processing unit 400 starts communication with the physical quantity measuring device 3 and transmits a data request for the physical quantity data D to the physical quantity measuring device 3.

Then, in step S110, the transmission processing unit 322 receives a data request from the data collection device 4 and determines that the transmission conditions are met.

Next, in step S111, the transmission processing unit 322 refers to the ring buffer data 342 and acquires a physical quantity data string Dset1 composed of multiple pieces of physical quantity data D.

Next, in step S112, the timing processing unit 321 measures the time since last measurement Tf, which indicates the time since the physical quantity sensor 30 last measured the physical quantity at the time when the transmission condition is satisfied. That is, the timing processing unit 321 measures the time since last measurement Tf, which is the time that has elapsed from the measurement time when the physical quantity data D when the physical quantity was last measured, among the multiple physical quantity data D included in the physical quantity data string Dset1, was stored, to the time when the transmission condition is satisfied.

Next, in step S113, the transmission processing unit 322 transmits the physical quantity data sequence Dset1 acquired in step S110 and the time since the last measurement Tf measured in step S112 to the data collection device 4.

Then, in step S210, the reception processing unit 400 receives the physical quantity data sequence Dset1 and the time since the last measurement Tf from the physical quantity measuring device 3 as a response to the data request sent in step S200.

Next, in step S211, the time determination processing unit 401 obtains the current time Tc measured by the time measurement unit 41 by sending a command to the time measurement unit 41 to read the current time Tc.

Then, in step S212, the time determination processing unit 401 determines the measurement time Ts for each of the multiple physical quantity data D constituting the physical quantity data string Dset1 received in step S210, based on the current time Tc acquired in step S211 and the time since the last measurement Tf received in step S210.

Next, in step S213, the storage processing unit 402 generates a physical quantity data string Dset2 with the measurement time by associating the measurement time Ts identified in step S212 with each piece of physical quantity data D with the physical quantity data string Dset1 received in step S210. The storage processing unit 402 then transmits the physical quantity data string Dset2 with the measurement time to the data management device 5, thereby storing it in the database 50, which serves as a storage device.

In this manner, the series of processes is completed. In the process (data provision method) by the physical quantity measuring device 3, step S100 corresponds to a measurement process, steps S110 to S111 and S112 correspond to a timing process, and step S113 corresponds to a transmission process. In the process (data collection method) by the data collecting device 4, steps S200 and S210 correspond to a reception process, steps S211 and S212 correspond to a time determination process, and step S213 corresponds to a storage process.

According to the data processing system 1 of the present invention, the physical quantity measuring device 3 (data processing device 31) transmits to the data collecting device a physical quantity data string Dset1 configured so that the measurement order can be determined based on a plurality of physical quantity data D obtained when the physical quantity sensor 30 measures each physical quantity under sampling conditions, and a time elapsed since last measurement Tf measured by the timer counting unit 33 as the time elapsed since the physical quantity sensor 30 last measured the physical quantity, and the data collecting device determines the measurement time Ts for each of the plurality of physical quantity data D constituting the physical quantity data string Dset1 based on the current time Tc measured by the time measuring unit 41 and the time elapsed since last measurement Tf. Therefore, the data collecting device 4 can determine the measurement time Ts for each of the physical quantity data D without providing a real-time clock circuit on the physical quantity measuring device 3 (data processing device 31) side.

Other Embodiments
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention. All such modifications are included in the technical concept of the present invention.

In the above embodiment, a case has been described in which the data processing device 31 is realized by the physical quantity measuring device 3, which is a device separate from the pump device 2. However, some or all of the functions of the data processing device 31 (particularly the functions of the control unit 32) may be realized by the pump device 2 by being incorporated into the pump control panel 23 of the pump device 2. In that case, the physical quantity sensor 30 and the pump control panel 23 may be connected by wire or wirelessly to transmit and receive various data. The pump device 2 may also be equipped with the physical quantity sensor 30.

In the above embodiment, a case has been described in which the physical quantity data string Dset1 transmitted by the physical quantity measuring device 3 is transmitted by the data collecting device 4 to the data management device 5 as a physical quantity data string Dset2 with the measurement time, and stored in the database 50 as a storage device. However, the device to which the physical quantity data string Dset2 with the measurement time is transmitted and the storage device to which it is stored may be changed as appropriate. For example, the physical quantity data string Dset2 with the measurement time may be transmitted to the data management device 5 or the terminal device 6, or may be stored in a storage device provided in the data collecting device 4 or the terminal device 6.

In the above embodiment, the physical quantity measuring device 3 (data processing device 31) operates according to the flowchart shown in FIG. 7. However, the order in which the steps are executed may be changed as appropriate, and some steps may be omitted.

In the above embodiment, the physical quantity measuring device 3 is described as being attached to the pump device 2, but it may also be attached to various devices, such as a refrigerator, a gas machine, a machine tool, a press machine, a conveying machine, a diagnostic device, etc. In that case, the physical quantity sensor 30 only needs to measure the physical quantity resulting from the various devices.

1...data processing system, 2...pump device, 3...physical quantity measuring device, 4...data collection device, 5...data management device, 6...terminal device, 7...network, 20...pump section, 21...motor, 22...joint section, 23...pump control panel, 30...physical quantity sensor, 31...data processing device, 32...control section, 33...timer count section, 34...storage section, 35...communication section, 36...power supply, 40...control section, 41...time measurement section, 42...storage section, 43...communication section, 44...input section, 45...output section, 50...database 300...housing, 320...measurement processing unit, 321...time counting processing unit, 322...transmission processing unit, 340...data processing program, 341...setting information, 342...ring buffer data, 400...reception processing unit, 401...time identification processing unit, 402...storage processing unit, 420...data collection program, 421...setting information, C...count value, D...physical quantity data, Dset1, Dset2...physical quantity data string, Sp...sampling period, Tc...current time, Tf...time since last measurement, Ts...measurement time

Claims (7)

1. A data processing system including one or more physical quantity measuring devices and one or more data collecting devices configured to be able to communicate with the physical quantity measuring devices,
   The physical quantity measuring device includes:
   A physical quantity sensor that measures a physical quantity of a measurement target;
   a storage unit configured to store physical quantity data obtained by measuring the physical quantity using the physical quantity sensor in a ring buffer format;
   a timer count unit that counts a count value over time;
   a measurement processing unit that stores in the storage unit the physical quantity data obtained when the physical quantity is measured by the physical quantity sensor under a predetermined sampling condition based on the count value counted by the timer count unit;
   a time measurement processing unit that measures an elapsed time since the physical quantity sensor last measured the physical quantity as an elapsed time since the last measurement by the timer counting unit;
   a transmission processing unit that transmits to the data collecting device, when a predetermined transmission condition is satisfied, a physical quantity data sequence configured so that a measurement order of the physical quantity data can be determined based on the plurality of physical quantity data stored in the storage unit, and the elapsed time since the last measurement measured by the timing processing unit,
   The data collection device includes:
   a time measurement unit that measures the current time;
   a reception processing unit that receives the physical quantity data string and the elapsed time since the last measurement from the physical quantity measuring device;
   a time determination processing unit that determines a measurement time when a physical quantity was measured as the physical quantity data for each of the plurality of physical quantity data constituting the physical quantity data sequence received by the reception processing unit, based on the current time measured by the time measurement unit and the elapsed time since last measurement received by the reception processing unit;
   a storage processing unit that associates the measurement time identified by the time identification processing unit with the physical quantity data sequence received by the reception processing unit and stores the physical quantity data in a storage device.
   Data processing system.
2. The transmission processing unit is
   transmitting the sampling conditions to the data collecting device together with the physical quantity data string and the time elapsed since the last measurement;
   The time identification processing unit is
   determining the measurement time for each of the plurality of physical quantity data constituting the physical quantity data string received by the reception processing unit, based on the current time measured by the time measurement unit, the elapsed time since the last measurement received by the reception processing unit, and the sampling condition;
   2. The data processing system of claim 1.
3. A physical quantity measuring device configured to be able to communicate with a data collection device,
   A physical quantity sensor that measures a physical quantity of a measurement target;
   a storage unit configured to store physical quantity data obtained by measuring the physical quantity using the physical quantity sensor in a ring buffer format;
   a timer count unit that counts a count value over time;
   a measurement processing unit that stores in the storage unit the physical quantity data obtained when the physical quantity is measured by the physical quantity sensor under a predetermined sampling condition based on the count value counted by the timer count unit;
   a time measurement processing unit that measures an elapsed time since the physical quantity sensor last measured the physical quantity as an elapsed time since the last measurement by the timer counting unit;
   a transmission processing unit that transmits to the data collecting device, when a predetermined transmission condition is satisfied, a physical quantity data sequence configured so that a measurement order of the physical quantity data can be determined based on the plurality of physical quantity data stored in the storage unit, and the elapsed time since the last measurement measured by the timing processing unit.
   Physical quantity measuring device.
4. A data collection device configured to be able to communicate with one or more physical quantity measuring devices,
   a time measurement unit that measures the current time;
   a receiving and processing unit that receives, from the physical quantity measuring device, a physical quantity data string configured so that a measurement order of the physical quantity data can be determined based on a plurality of physical quantity data obtained when each physical quantity of a measurement target is measured under a predetermined sampling condition, and a time since last measurement that indicates the time elapsed since the physical quantity was last measured as the physical quantity data;
   a time determination processing unit that determines a measurement time when a physical quantity was measured as the physical quantity data for each of the plurality of physical quantity data constituting the physical quantity data sequence received by the reception processing unit, based on the current time measured by the time measurement unit and the elapsed time since last measurement received by the reception processing unit;
   a storage processing unit that associates the measurement time identified by the time identification processing unit with the physical quantity data sequence received by the reception processing unit and stores the physical quantity data in a storage device.
   Data collection equipment.
5. A data processing method for processing data using a data processing system including a physical quantity measuring device including a physical quantity sensor that measures a physical quantity of a measurement target, a storage unit that stores physical quantity data obtained by measuring the physical quantity by the physical quantity sensor in a ring buffer format, and a timer count unit that counts a count value over time, and a data collecting device that includes a time measuring unit that measures a current time and is configured to be able to communicate with the physical quantity measuring device, the data processing system comprising:
   In the physical quantity measuring device,
   a measurement processing step of storing, in the storage unit, physical quantity data obtained when the physical quantity is measured by the physical quantity sensor under a predetermined sampling condition based on the count value counted by the timer count unit;
   a timing process step of measuring an elapsed time since the physical quantity sensor last measured the physical quantity as an elapsed time since the last measurement by the timer counting unit;
   a transmission processing step of transmitting to the data collecting device, when a predetermined transmission condition is satisfied, a physical quantity data string configured so that a measurement order of the physical quantity data can be determined based on the plurality of physical quantity data stored in the storage unit, and the elapsed time since the final measurement measured in the timing processing step;
   In the data collection device,
   a receiving process step of receiving the physical quantity data string and the time elapsed since the last measurement from the physical quantity measuring device;
   a time identification process step of identifying a measurement time when a physical quantity was measured as the physical quantity data for each of the plurality of physical quantity data constituting the physical quantity data string received by the reception process step, based on the current time measured by the time measurement unit and the time elapsed since last measurement received by the reception process step;
   a storage processing step of storing the physical quantity data sequence received in the reception processing step in a storage device in such a manner that the measurement time identified in the time identification processing step is associated with each piece of physical quantity data.
   Data processing methods.
6. A data providing method for providing data using a physical quantity measuring device including a physical quantity sensor that measures a physical quantity of a measurement target, a storage unit that stores physical quantity data obtained by measuring the physical quantity by the physical quantity sensor in a ring buffer format, and a timer count unit that counts a count value over time, and configured to be capable of communicating with one or a plurality of data collecting devices, the method comprising:
   a measurement processing step of storing, in the storage unit, physical quantity data obtained when the physical quantity is measured by the physical quantity sensor under a predetermined sampling condition based on the count value counted by the timer count unit;
   a timing process step of measuring an elapsed time since the physical quantity sensor last measured the physical quantity as an elapsed time since the last measurement by the timer counting unit;
   a transmission processing step of transmitting, when a predetermined transmission condition is satisfied, to the data collecting device, a physical quantity data sequence configured so that a measurement order of the physical quantity data can be determined based on the plurality of physical quantity data stored in the storage unit, and the elapsed time since the final measurement measured in the timing processing step;
   How data is provided.
7. 1. A data collection method for collecting data using a data collection device that includes a time measurement unit that measures a current time and is configured to be able to communicate with one or more physical quantity measuring devices, comprising:
   a receiving process step of receiving, from the physical quantity measuring device, a physical quantity data string configured so that a measurement order of the physical quantity data can be determined based on a plurality of physical quantity data obtained when each physical quantity of a measurement target is measured under a predetermined sampling condition, and a time since last measurement indicating an elapsed time since the physical quantity was last measured as the physical quantity data;
   a time identification process step of identifying a measurement time when a physical quantity was measured as the physical quantity data for each of the plurality of physical quantity data constituting the physical quantity data string received by the reception process step, based on the current time measured by the time measurement unit and the time elapsed since last measurement received by the reception process step;
   a storage processing step of storing the physical quantity data sequence received in the reception processing step in a storage device in such a manner that the measurement time identified in the time identification processing step is associated with each piece of physical quantity data.
   Data collection methods.

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