JP7427518B2 - Data collection system and data collection method - Google Patents

Description

The present invention relates to a data collection system and a data collection method, and particularly to a data collection system and a data collection method that can easily collect data.

For example, in pump equipment that transfers fluid, state quantities such as vibration, temperature, and flow rate are generally detected by sensors provided in the pump. As a system equipped with such pump equipment, information regarding the state quantity detected by the sensor installed in the pump is transmitted via the control device to a terminal device such as a smartphone, tablet terminal, or personal computer, and the information on this terminal device is There is something that is displayed on the display unit (for example, see Patent Document 1).

Japanese Patent Application Publication No. 2017-180349

When a system has a large number of sensors, relatively large-scale instrumentation work such as building a central monitoring facility may be required to transmit the state quantities detected by the sensors to the control device before transmitting them to the terminal device. In many cases, system construction became complicated.

In view of the above-mentioned problems, an object of the present invention is to provide a data collection system and a data collection method that can easily collect data on state quantities detected by sensors.

In order to achieve the above object, the data collection system according to the first aspect of the present invention is installed in one or more sensing target devices 19 arranged in a managed area, as shown in FIG. 1, for example. The sensor 10 includes a plurality of sensors 10 that detect the state quantity of the sensing target device 19; the installation information of the plurality of sensors 10 is individually stored, and the sensor 10 in which the installation information is stored detects the state quantity of the sensing target device 19. a data collection device 20 that receives state quantities via wireless communication; When approaching, the state quantity detected by the sensor 10 is automatically received.

With this configuration, the data collection device automatically receives the state quantity when it approaches the range where it can receive the state quantity detected by the sensor, so it can cycle through the range where it can receive the state quantity from each sensor. You can collect data just by doing this.

Further, a data collection system according to a second aspect of the present invention is, for example, as shown in FIG. The sensor 10 has a position information storage unit 28 that stores information on a receivable position, which is a position where radio waves from the data collection device 20 can be received with an intensity equal to or higher than a threshold value, and the sensor 10 detects when the data collection device 20 is at the receivable position. It is configured to automatically receive state quantities.

With this configuration, even if wireless communication between the sensor and the data collection device is difficult to detect due to a malfunction of the sensor or the like, the presence of the sensor whose state quantity should be collected can be recognized.

Further, in a data collection system according to a third aspect of the present invention, for example, as shown in FIG. It has transmitting sections 22, 26, and 27 that transmit to the operator of the data collection device 20 that there is no wireless communication with the sensor 10 when there is no wireless communication with the sensor 10 despite the existence of the wireless communication.

With this configuration, it is possible to avoid forgetting to collect the state quantities of the sensors that are scheduled to be collected.

Furthermore, the data collection system according to the fourth aspect of the present invention is configured according to any one of the first to third aspects of the present invention, as shown in FIGS. 2 and 6(A), for example. In the data collection system 1, the data collection device 20 includes a data acquisition specifying unit 29 that selects a sensor 10 from which data is to be collected from a plurality of sensors 10 whose installation information is stored.

With this configuration, a sensor for collecting data can be selected from among a plurality of sensors, so the amount of communication can be reduced and efficient data collection can be realized.

In order to achieve the above object, the data collection method according to the fifth aspect of the present invention includes, for example, referring to FIG. 1, FIG. 4, and FIG. A plurality of sensors 10 that are installed in the sensing target device 19 and that detect the state quantity of the sensing target device 19 are sent to a data collection device 20 that collects data on the state quantity detected by the sensor 10. An authentication step (S7) of individually associating; when the data collection device 20 approaches the state quantity detected by the sensor 10 associated with the data collection device 20 through wireless communication, the sensor and a receiving step (S15 to S17) of automatically receiving the state quantity detected by 10.

With this configuration, the data collection device automatically receives the state quantity when it approaches the range where it can receive the state quantity detected by the sensor, so it can cycle through the range where it can receive the state quantity from each sensor. You can collect data just by doing this.

According to the present invention, the data collection device automatically receives the state quantity when it approaches the range in which the state quantity detected by the sensor can be received, so it cycles through the range in which it can receive the state quantity from each sensor. You can collect data just by doing this.

1 is a schematic configuration diagram of a detection system according to an embodiment of the present invention. 1 is a schematic configuration diagram of one sensor and a portable device that constitute a detection system according to an embodiment of the present invention. FIG. 3 is a diagram showing an example of information displayed on a display unit. It is a flowchart explaining the procedure for performing authentication registration of a newly installed sensor in the detection system according to the embodiment of the present invention. 12 is a flowchart illustrating a procedure for collecting state quantities detected by authenticated and registered sensors. It is a figure which shows the example of the inspection state displayed on a display part. (A) is a schematic configuration diagram of one sensor and a portable device constituting a detection system according to a modification of the embodiment of the present invention, and (B) is a diagram of another modification of the embodiment of the present invention. FIG. 1 is a schematic configuration diagram of one sensor and a portable device that constitute a detection system.

Embodiments of the present invention will be described below with reference to the drawings. In each figure, members that are the same or correspond to each other are designated by the same or similar reference numerals, and redundant explanations will be omitted.

First, with reference to FIG. 1, a detection system 1 according to an embodiment of the present invention will be described. FIG. 1 is a schematic configuration diagram of a detection system 1. As shown in FIG. The detection system 1 includes a plurality of sensors 10 and a mobile device 20.

The sensor 10 is attached to a sensing target device 19 (hereinafter simply referred to as "target device 19"). The target device 19 is typically a pump device, but it may also be a device other than the pump device, such as a rotating device including a fan, a blower, etc., or a heat source device. The target device 19 is installed within the management target area. The management target area is, for example, a place such as a factory, a machine room of an office building, or the like, where the target equipment 19 in which the sensor 10 from which information (status amount) is to be acquired is installed is placed. In FIG. 1, a target device 19A includes a sensor 10A attached to a motor, a sensor 10B attached to a pedestal, and a sensor 10C attached to a bearing, and a target device 19B includes a sensor 10A attached to a bearing. 10D and a sensor 10E attached to the pump housing. Each of the sensors 10A, 10B, 10C, 10D, and 10E is an independent sensor that detects a state quantity related to the part to which it is attached, but will be collectively referred to as "sensor 10" when describing common characteristics. Similarly, each of the target devices 19A and 19B exhibits independent functions, but they will be collectively referred to as "target devices 19" when explaining their common characteristics.

In the example shown in FIG. 1, the target device 19A has three sensors 10A, 10B, and 10C, and the target device 19B has two sensors 10D and 10E. The number of each attached sensor 10 may be increased or decreased as necessary, and the number of target devices 19 may also be increased or decreased as necessary. A typical example of a mode in which the detection system 1 includes a plurality of sensors 10 is a case where one device includes a plurality of target devices 19 each having a plurality of sensors 10 installed therein. It may be possible to have a plurality of target devices 19 in which a plurality of sensors 10 are installed, or one target device 19 can be provided in which a plurality of sensors 10 are installed. A plurality of target devices 19 and each target device 19 each having one sensor 10 installed may be provided.

Here, the configurations of the sensor 10 and the portable device 20 will be explained with reference to FIG. 2 as well. FIG. 2 is a schematic configuration diagram of one sensor 10 and portable device 20 that constitute the detection system 1. The sensor 10 is typically configured to operate by receiving a portion of the power (usually from a commercial power supply) supplied to the target device 19, and is used as an auxiliary power when the commercial power supply fails. A battery may also be provided, or the device may be configured to operate solely on the battery without using a commercial power source. The sensor 10 includes a communication section 11, a state quantity detection section 12, and an installation information storage section 13. The communication unit 11 is a part that includes components necessary for performing wireless communication with the mobile device 20, such as an antenna. The communication unit 11 is configured to be able to exchange data with the state quantity detection unit 12 and the installation information storage unit 13, and is configured to exchange data with the state quantity detection unit 12 and the installation information storage unit 13. The configuration is such that data received from the storage unit 13 and data received from the mobile device 20 can be transferred to the installation information storage unit 13.

The state quantity detection unit 12 detects the state quantity of the part of the target device 19 to which the sensor 10 is attached. The state quantities detected by the state quantity detection unit 12 of the sensor 10 include vibration, temperature, pressure, current, etc., and typically one sensor 10 is configured to detect one type of state quantity. However, one sensor 10 may be configured to detect multiple types of state quantities. In this embodiment, the sensor 10A is configured to detect current, the sensors 10B, 10C, and 10D each detect vibration, and the sensor 10E detects pressure.

The installation information storage unit 13 is a part that can store information necessary for identifying each sensor 10 as well as information that contributes to the utilization of state quantities detected by the sensor 10. Specifically, the installation information storage unit 13 stores a unique address for identifying the sensor 10 in question. The unique address is an address assigned to each sensor 10, and is the only address that can be distinguished from other sensors 10 other than the sensor 10. In this embodiment, the installation information storage unit 13 also stores a product-specific address. The product-specific address is an address that specifies the type of sensor 10, and if the types are the same (typically the same product), the same address is assigned. In other words, the same product-specific address may be assigned to a plurality of sensors 10. Furthermore, the installation information storage unit 13 is configured to be able to store information regarding the installation of the sensor 10 (hereinafter referred to as "installation information") after the fact. The installation information of the sensor 10 includes the installation location (where in the management target area it is installed), the installation location (where in the target device 19 it is installed), the installation model (the type of the target device 19), and the like.

The mobile device 20 is a device that can perform authentication and registration of each sensor 10, and is also a device that collects state quantities detected by the sensors 10 that have been authenticated and registered. That is, in this embodiment, the mobile device 20 serves as both a setting device and a data collection device. As the mobile device 20, a tablet-type mobile terminal can typically be used, but a smartphone or a laptop (notebook computer) may also be used. The mobile device 20 may have a communication function to an external device 99 such as an external server (including a cloud) as shown in FIG. In this embodiment, the mobile device 20 includes a communication section 21, a display section 22, an installation information storage section 23, a radio field strength measurement section 24, an authenticated sensor storage section 25, a speaker 26, and a vibration generation section. 27, a position information storage section 28, and a data acquisition specification section 29, which are configured to be able to directly or indirectly exchange data with each other.

The communication unit 21 is a part that has components necessary for wireless communication with the sensor 10, such as an antenna, and components necessary for wireless communication or wired communication with the external device 99. It is. The communication unit 21 transfers the data received from the sensor 10 and/or the external device 99 to necessary parts in the mobile device 20 (for example, the display unit 21, the radio field strength measuring unit 24, etc.), and transmits the data received from the sensor 10 and/or the external device 99. The mobile device 20 is configured so that data to be transmitted to the mobile device 20 can be received from a necessary part within the mobile device 20.

The display unit 22 is a part that displays information regarding the sensor 10, and typically includes a display. Examples of the information regarding the sensor 10 include the unique address of the sensor 10, the intensity of radio waves emitted by the sensor 10, whether the sensor 10 is authenticated, and whether the sensor 10 is undergoing an authentication operation. Further, the display unit 22 may be configured to be able to display items of installation information of the sensor 10 to be registered. From the perspective of simplifying the authentication operation, it is preferable that the installation information items displayed on the display unit 22 be selectable from pre-registered candidates using a pull-down menu or the like; You can also use it as

FIG. 3 shows an example of information displayed on the display unit 22. FIG. 3A is an example of a list display screen that displays the radio field strength, unique address, and presence/absence of authentication for a plurality of sensors 10 individually. FIG. 3(B) is an example of an authentication screen that displays that the sensor 10 is performing an authentication operation. FIG. 3C is an example of an installation information setting screen that displays installation information items for the sensor 10 to be registered in a pull-down menu from pre-registered candidates. FIG. 3(D) is an example of a list display screen in which installation information is added to some of the sensors 10 (sensor A).

The installation information storage unit 23 is a part that individually stores installation information of the sensor 10 that has been authenticated and registered. It is preferable that the installation information storage unit 23 determines the storage capacity (storage) in consideration of the number of sensors 10 scheduled to be authenticated. The radio wave intensity measuring section 24 is a part that measures the intensity of radio waves emitted by the sensor 10. The radio field strength measurement unit 24 may be configured to detect the strength of the radio wave as a specific numerical value, or may be configured to detect to which range it belongs in a predetermined range (for example, every 10 dBm). You can leave it there. The authenticated sensor storage unit 25 is configured to store the unique address of the sensor 10 for which authentication has been completed. Further, the authenticated sensor storage unit 25 may be configured to store the product-specific address of the sensor 10 for which authentication has been completed. The authenticated sensor storage unit 25 is configured to cooperate with the installation information storage unit 23 to associate the unique address stored in the authenticated sensor storage unit 25 with the installation information stored in the installation information storage unit 23. has been done.

The speaker 26 is for outputting information to be transmitted to the operator of the mobile device 20 as sound. The speaker 26 is configured to be able to emit voices, melodies, and buzzer sounds. The vibration generator 27 is for outputting information to be transmitted to the operator of the mobile device 20 as vibration, and typically includes a vibrator.

The position information storage unit 28 is a part that stores the position where the radio waves transmitted from the sensor 10 can be received with an intensity equal to or higher than a threshold value for the sensor 10 that has been authenticated and registered. The location information storage unit 28 typically includes a GPS receiver and is configured to be able to specify and store a desired location using GPS. The data acquisition specifying unit 29 is a part for selecting the sensor 10 from which the state quantity is to be collected when collecting the state quantity detected by the sensor 10 that has been authenticated and registered. Since the timing and period at which the state quantities to be collected may differ depending on the installation position of the sensor 10 (the type of state quantity detected by the sensor 10), it is difficult to select the sensor 10 that collects the state quantities. I'm trying to make it possible. By selecting the sensor 10 that collects state quantities, it is possible to reduce the amount of communication and to efficiently collect state quantities.

Each sensor 10 and the mobile device 20 are configured to be able to communicate wirelessly with each other. The means of wireless communication typically conforms to international standards (IEEE802.15.4, IEEE802.15.1, IEEE802.15.11a, 11b, 11g, 11n, 11ac, 11ad, ISO/IEC14513-3-10, IEEE802 .15.4g) communication means (Bluetooth (registered trademark), Bluetooth Low Energy, Wi-Fi, ZigBee (registered trademark), Sub-GHz, EnOcean (registered trademark), etc.) is used.

Next, the operation of the detection system 1 will be explained with reference to FIGS. 4 and 5. FIG. 4 is a flowchart illustrating a procedure for performing authentication registration of a newly installed and uncertified sensor 10 in the detection system 1. FIG. 5 is a flowchart illustrating a procedure for collecting state quantities detected by the sensor 10 that has been authenticated and registered. In the following explanation of the operation of the detection system 1, when referring to the configuration of the detection system 1, reference will be made to FIGS. 1 to 3 as appropriate. First, with reference to FIG. 4, a procedure for authenticating and registering the sensor 10 (authentication step) will be described.

As described above, the target device 19 is provided with a plurality of sensors 10 in order to detect various state quantities. When constructing the detection system 1, if the sensor 10 without installation information is attached to the target device 19 and the installation information is associated with the sensor 10 after the target device 19 is installed in the management target area, the management will be difficult. This is easy and convenient. When the mobile device 20 and the sensor 10 perform wireless communication, even if they are far apart, as long as the radio waves can reach them, the state quantity detected by the sensor 10 can be viewed on the mobile device 20, and the state quantity detected by the sensor 10 can be viewed on the mobile device 20. It is possible to set However, if the sensor 10 has been installed on the target device 19 but the installation information of the sensor 10 has not been set, even if an attempt is made to detect a specific state quantity (for example, current) of a certain target device 19 (for example, the target device 19A), the desired The sensor 10 that detects the state quantity cannot be specified, and there is a possibility that an unintended state quantity may be acquired. Furthermore, there is a possibility that an incorrect setting may be made to an unintended sensor 10. Furthermore, if the sensor 10 can be set using any mobile device 20 that has a wide range of radio waves and can receive the radio waves emitted by the sensor 10, there is a possibility that the settings may be changed unintentionally by an outsider. There is sex. In order to avoid such inconveniences, the detection system 1 sets the sensor 10 according to the procedure described below.

The sensor 10 attached to the target device 19 located within the managed area includes a unique address and a product-specific address, regardless of whether it is certified or registered (installation information is registered). Telegrams (a set of data written in a certain format and sent and received between computers) are sent regularly. Note that there is a possibility that there is a device other than the sensor 10 that is transmitting a message containing some kind of information. The mobile device 20 is held by an operator and moves with the operator, and when it enters a range where it can capture radio waves being transmitted by something, it receives a message (S1). When the mobile device 20 receives the message, it analyzes the received message and determines whether the source of the message is the sensor 10 (S2). Whether or not the source of the received message is the sensor 10 can be determined by determining whether the product-specific address included in the analyzed message is an address indicating the sensor 10. If the source of the received message is not the sensor 10, the process returns to the step of receiving the message (S1) again. On the other hand, if the sender of the received message is the sensor 10, the information currently held by the sensor 10 is displayed as a list on the display unit 22 of the mobile device 20 (S3). The list displayed on the display unit 22 here is, for example, as shown in FIG. 3(A). In the example shown in FIG. 3(A), in addition to the unique address of the sensor 10, the strength of the radio wave measured by the radio field intensity measurement unit 24, etc. are shown. The mobile device 20 is configured such that it cannot receive state quantities, installation information, etc. from the sensor 10 that has not been authenticated.

For the sensors 10 displayed in the list, the mobile device 20 checks whether the unique address included in the received and analyzed message is included in the unique addresses stored in the authenticated sensor storage unit 25. Thus, it is determined whether the sensor 10 has been authenticated (S4). If the unique address included in the received and analyzed message is not included in the unique addresses stored in the authenticated sensor storage unit 25, the mobile device 20 determines that the sensor 10 is not authenticated. Then, a display prompting for authentication is displayed on the display unit 22 (S5). The display prompting authentication may be, for example, a message as shown in FIG. 3(B) that says, "Authentication will be performed with the sensor. Please bring the device closer to the sensor." In the detection system 1, in order to prevent unauthorized registration from the outside (unintentional authentication registration by an outsider), authentication registration is allowed when the radio waves measured by the radio field strength measuring section 24 exceed a threshold value. It has become. The threshold here is typically set to the strength of radio waves that cannot be captured outside the managed area, and from the perspective of further preventing unauthorized registration from outside, it is important to It is preferable that the intensity of radio waves be set to a value that can be captured at a distance when the device 20 is held over the sensor 10. By setting the threshold in this way, unauthorized registration by an outsider who cannot enter the managed area is prevented.

After the step of displaying a prompt for authentication on the display unit 22 (S5), the mobile device 20 determines whether the intensity of the radio wave measured by the radio field intensity measurement unit 24 is equal to or greater than a threshold value (S6). If it is not equal to or greater than the threshold, the step (S5) of displaying a message prompting authentication continues. On the other hand, if it is greater than or equal to the threshold, the mobile device 20 saves (memorizes) the unique address of the sensor 10 in the authenticated sensor storage unit 25 (S7). By storing the unique address in the authenticated sensor storage section 25, the authentication registration of the sensor 10 is completed, and the sensor 10 becomes an authenticated sensor 10. The sensor 10 is registered as authenticated in the mobile device 20, so that when it sends a message including the detected state quantity, it is received by the mobile device 20 that was authenticated and registered. In addition, in order to avoid erroneous authentication when suddenly high radio field strength is received for some reason, "If the strength of the received radio waves is equal to or higher than the threshold value at a predetermined time" and/or "Threshold value When a radio wave with a strength equal to or higher than that is received a predetermined number of times, the unique address may be stored in the authenticated sensor storage unit 25 and authenticated and registered. Furthermore, in the present embodiment, in the step (S7) of storing the unique address of the sensor 10 to be authenticated and registered in the authenticated sensor storage unit 25, convenience is improved when collecting state quantities detected by the sensor 10 later. From this point of view, information on the position of the mobile device 20 at that time is also stored in the position information storage unit 28.

At this point, the mobile device 20 has the unique address and location information of the authenticated and registered sensor 10, but does not have the installation information of the sensor 10. Therefore, the installation information of the sensor 10 cannot be displayed on the display unit 22, and when the state quantity data is collected from the sensor 10 later, it is not possible to intuitively understand what state quantity data is. Therefore, in the present embodiment, after the step of storing the unique address of the sensor 10 to be authenticated and registered in the authenticated sensor storage unit 25 (S7), the installation information is set (S8). In the step (S8) of setting installation information, in this embodiment, the items of installation information of the sensor 10 to be registered, which are registered in advance in the installation information storage unit 23, are set as shown in FIG. 3(C). Since the pull-down menu is displayed on the display unit 22, installation information can be easily set by simply selecting and deciding from the pull-down menu. Once the installation information is set, a list with installation information added to the list shown in FIG. 3A can be displayed on the display unit 22, as shown in FIG. 3D. In this embodiment, the installation information set in the mobile device 20 is transmitted to the sensor 10 by wireless communication and is also stored in the installation information storage section 13 of the sensor 10. Once the installation information is set (S8), the authentication registration of the sensor 10 is completed. In this state, the mobile device 20 is able to receive the state quantity detected by the authenticated and registered sensor 10 as a telegram. Note that even if the sensor 10 has been authenticated in the step (S4) of determining whether the sensor 10 has been authenticated, the authentication registration of the sensor 10 is completed, and in this state, the mobile device 20 It is now possible to receive the state quantity detected by 10 as a telegram.

Next, with reference to FIG. 5, a procedure for collecting state quantities detected by the authenticated and registered sensor 10 will be described. Each sensor 10 that has been authenticated and registered through the flow shown in FIG. 4 described above is stored in the mobile device 20, and can be displayed as a list. For the sensors 10 listed in the list display, the mobile device 20 can collect data on state quantities detected by the sensors 10. The sensors 10 listed in the list display may have different times when it is necessary to collect detected state quantities, so each time an inspection is performed, the data acquisition specifying unit 29 selects the sensors 10 whose state quantities are to be acquired. It is possible to choose. In this embodiment, when the item "Inspection implementation" is selected from the menu displayed on the mobile device 20, an inspection list is displayed for each sensor 10 that has been authenticated and registered and displayed as a list, as shown in FIG. 6(A). A button will now appear on the touch panel that allows you to choose to add it. The operator of the mobile device 20 (typically the person performing the inspection) creates an inspection list in which the sensor 10 whose state quantity is desired to be acquired is selected from among the sensors 10 displayed in the list (S11).

After creating the inspection list, the operator starts touring the inspection route (S12). The inspection route may be determined by referring to the installation information of the sensor 10 added to the inspection list and sequentially passing near the position where the sensor 10 is installed. After starting to patrol the inspection route, the mobile device 20 determines whether it has reached the vicinity of the sensor 10 to be inspected (S13). Regarding the sensor 10 that has been authenticated and registered, the position information is stored in the position information storage unit 28, so when the mobile device 20 reaches the vicinity of the stored position, the position information storage unit 28 notifies the user of this fact. It is now possible to detect. This determination of whether or not the vehicle has reached the vicinity of the sensor 10 to be inspected is made by the portable device 20 alone in the detection system 1, and therefore is not affected by the operating state of the sensor 10. Typically, as a criterion for determining that the sensor 10 to be inspected has reached the vicinity, the case where the sensor 10 has reached a position where the radio waves emitted from the sensor 10 can be received with an intensity equal to or higher than a threshold value can be adopted. However, if you want to notify the presence of the sensor 10 over a wider range than this, the intensity of the radio waves emitted from the sensor 10 will be lower than the threshold, but at a predetermined intensity (any value can be set depending on the situation). It may be determined that the sensor 10 has reached the vicinity of the sensor 10 to be inspected when it reaches a position where it can capture radio waves. However, in this embodiment, the message including the state quantity can be received from the sensor 10 when the intensity of the radio waves transmitted from the sensor 10 reaches a position equal to or higher than the threshold value.

In the step (S13) of determining whether or not the sensor 10 to be inspected has reached the vicinity, if the sensor 10 has not reached the vicinity, the process returns to the same step (S13) again. On the other hand, if the sensor 10 to be inspected has reached the vicinity, the operator is notified of this (S14). Typically, the operator is notified by displaying a message to that effect on the display unit 22, but instead of or in addition to this display, sound output from the speaker 26 and/or a vibration generator It is also possible to generate vibration in step 27. By being notified that the mobile device 20 has arrived near the sensor 10 to be inspected, it is possible to prevent the operator from forgetting to collect the state quantities from the sensor 10. An example of the notification on the display unit 22 is posting a message shown in the "sensor D" item in FIG. 6(B). After notifying the operator (S14), the mobile device 20 determines whether or not it has started receiving a message including the state quantity from the target sensor 10 (S15). As described above, when the mobile device 20 reaches a position where it can receive the radio waves transmitted from the sensor 10 with an intensity equal to or higher than the threshold value, the mobile device 20 becomes in a state where it can receive the message including the state quantity from the sensor 10. . Reception may be started when a message including a state quantity can be received from the sensor 10, but before starting reception, an encryption key exchange procedure is attempted between the mobile device 20 and the sensor 10, Security may be improved by starting to receive a message containing the state quantity from the sensor 10 after the encryption key exchange procedure is successful. Note that after the encryption key exchange procedure is successful, the installation information stored in the installation information storage section 13 of the sensor 10 and the installation information stored in the installation information storage section 23 of the mobile device 20 are compared, and both are verified. It may be confirmed that the two are associated by a match, and if the comparison results do not match, the installation information stored in the mobile device 20 has been overwritten (changed). It is also possible to update the installation information stored in the mobile device 20 by assuming that the installation information set in the sensor 10 is correct.

In the step (S15) of determining whether or not the reception of the message including the state quantity has started from the target sensor 10, once the reception of the message from the sensor 10 is started, the mobile device 20 displays the sensor 10 on the display unit 22. A message indicating that communication is in progress is displayed (S16). An example of the display on the display unit 22 here is posting a message shown in the item "sensor A" in FIG. 6(C). By displaying on the display unit 22 that it is communicating with the sensor 10, the operator holding the mobile device 20 can move away from a position where the radio waves emitted from the sensor 10 can be received with an intensity equal to or higher than the threshold value. It is possible to prevent it from being put away. Note that while the mobile device 20 is acquiring data regarding the state quantity from the sensor 10, instead of displaying it on the display unit 22, or in addition to displaying it on the display unit 22, a melody is output from the speaker 26 and/or The vibrations may be generated in the vibration generator 27. Upon completion of receiving the message including the state quantity from the sensor 10, the mobile device 20 acquires data regarding the state quantity detected by the sensor 10 (S17).

Going back a little bit, in the step (S15) of determining whether or not reception of the message including the state quantity has started from the target sensor 10, if the reception of the message from the sensor 10 is not started, the mobile device 20 22, the operator is informed that communication is not possible (S18). One of the reasons why the mobile device 20 and the sensor 10 cannot communicate is that the sensor 10 is not supplied with power. Possible cases where power is not supplied to the sensor 10 include a case where a power outage occurs or a case where the battery runs out even if a battery is provided. By notifying the operator that communication is not possible each time wireless communication with each sensor 10 is attempted, it is possible to quickly identify which sensors 10 require action. An example of what is displayed on the display unit 22 in the step of communicating that communication is not possible (S18) is to post a message shown in the item "sensor D" in FIG. 6(C). Note that instead of displaying on the display unit 22 that communication is not possible, or in addition to displaying the message on the display unit 22, a sound or a buzzer sound may be emitted from the speaker 26 and/or a vibration may be generated in the vibration generator 27. , may be communicated to the operator. By using the speaker 26 and/or the vibration generator 27 to notify the operator that communication is not possible, it is possible to avoid unnecessary inspections. In this way, in addition to the display section 22, the speaker 26 and the vibration generation section 27 each constitute a transmission section.

After transmitting the fact that communication is not possible (S18) or acquiring data regarding the state quantity detected by the sensor 10 (S17), the mobile device 20 selects the sensors that are not yet inspected among the sensors listed in the inspection list. It is determined whether there is a sensor 10 to be inspected (S19). If there is a sensor 10 that has not been inspected, the process returns to the step (S13) of determining whether or not the sensor 10 to be inspected has reached the vicinity, and the above-described flow is repeated thereafter. On the other hand, if there are no uninspected sensors 10, the inspection ends. When the inspection is completed, the inspection results may be displayed on the display unit 22, for example, as shown in FIG. 6(D).

As explained above, according to the detection system 1 according to the present embodiment, the mobile device 20 approaches a position where it can receive a message containing a unique address transmitted by an unauthenticated sensor 10 with an intensity equal to or higher than a threshold value. In some cases, the sensor 10 can be authenticated and registered, so that authentication and registration can be easily performed while avoiding unauthorized registration from the outside. In addition, when the mobile device 20 reaches a position where the intensity of the radio waves emitted from the sensor 10 listed in the inspection list created in advance is equal to or higher than a threshold value, the mobile device sends a message containing the state quantity detected by the sensor 10 to the mobile device. 20 automatically receives the data, data can be easily collected by simply going around the inspection route.

Next, a detection system 101 according to a modification of the embodiment of the present invention will be described with reference to FIG. 7(A). FIG. 7A is a schematic configuration diagram of one sensor 110 and a mobile device 120 that constitute a detection system 101 according to a modification. In the detection system 101, the sensor 110 has an authenticated unique address storage section 15 instead of the installation information storage section 13 (see FIG. 2), and furthermore, the sensor 110 has an authenticated unique address storage section 15, which is not provided in the sensor 10 (see FIG. 2). It has a radio field intensity measuring section 16. The authenticated unique address storage unit 15 is a part that can store the unique address of the authenticated mobile device 120 in addition to the function of the installation information storage unit 13 (see FIG. 2). Since the radio field intensity measurement unit 16 is provided in the sensor 110, the mobile device 120 is not provided with the radio field intensity measurement unit 24 (see FIG. 2). Furthermore, the mobile device 120 is not provided with the authenticated sensor storage section 25 (see FIG. 2) either. The configurations of the sensor 110 and the mobile device 120 other than those described above are the same as those of the sensor 10 (see FIG. 2) and the mobile device 20 (see FIG. 2), respectively. In the detection system 101 configured in this manner, the sensor 110 receives a notification from the mobile device 120 that the authentication operation is in progress, and shifts to the authentication operation mode. Then, the radio field intensity measurement unit 16 of the sensor 110 measures the radio field strength of wireless communication with the mobile device 120, and if it is equal to or higher than a threshold value, stores the unique address of the mobile device 120. The sensor 110 notifies that the communication from a mobile device other than the stored mobile device 120 is unapproved if the communication is not approved.

Next, a detection system 201 according to another modification of the embodiment of the present invention will be described with reference to FIG. 7(B). FIG. 7(B) is a schematic configuration diagram of one sensor 210 and the portable device 20 that constitute the detection system 201 according to the modification. In the detection system 201, the sensor 210 includes a radio field intensity variable section 18 in addition to the configuration of the sensor 10 (see FIG. 2). The radio wave intensity variable unit 18 is capable of changing the range of radio waves by changing the strength and/or frequency of the radio waves of the message including the unique address transmitted from the sensor 210. The configuration of the sensor 210 other than the above is the same as that of the sensor 10 (see FIG. 2), and the mobile device 20 included in the detection system 201 is the same as that included in the detection system 1 (see FIG. 2). In the detection system 201 configured in this way, before the authentication registration of the sensor 210, the strength of the radio waves emitted from the sensor 210 is set to the minimum (communication is possible only at short distances), and after the authentication registration is performed, the storage of the installation information is completed. The strength of the radio waves transmitted later is increased. By changing the radio field strength in this way, the mobile devices 210 that can be authenticated are limited to those existing in a short distance by emitting relatively weak radio waves until authentication registration is performed, and after authentication registration is performed, By transmitting strong radio waves, the state quantity detected by the sensor 210 can be received by the portable device 20 over a relatively long distance.

In the above explanation, it is assumed that the installation information storage unit 13 stores the product-specific address and installation information in addition to the unique address, but it is sufficient that at least the unique address is stored, and information other than the unique address is necessary. It can be configured to be stored arbitrarily depending on the situation.

In the above description, it is assumed that the mobile device 20 serves as both a setting device and a data collection device, but if either function is sufficient, the other function may not be provided.

In the above description, it is assumed that the mobile device 20 has the speaker 26 and the vibration generator 27, but if the output of audio or notification by vibration is not required, the speaker 26 and/or the vibration generator 27 may not be provided. good.

1, 101, 201 Sensor authentication registration system 10, 110, 210 Sensor 16 Radio field intensity measurement section 19 Sensing target device 20, 120 Mobile device 22 Display section 24 Radio field intensity measurement section 26 Speaker 27 Vibration generation section 28 Position information storage section 29 Data Acquisition Specification Department

Claims (5)

a plurality of sensors installed in one or more sensing target devices arranged in a management target area, the sensors detecting state quantities of the sensing target devices;
a data collection device that individually stores installation information of a plurality of the sensors, and receives, via wireless communication, a state quantity detected by the sensor in which the installation information is stored;
The data collection device approaches each of the plurality of sensors in which the installation information is stored, and comes within a range in which the wireless communication can be received , so that the data collection device can receive radio waves from the sensor with an intensity equal to or higher than a threshold value. is configured to automatically receive the state quantity detected by the sensor when
While receiving the state quantity detected by the sensor, the data collection equipment notifies the operator of the data collection equipment that it is communicating with the sensor, and indicates that the sensor whose state quantity has not been collected is nearby. a transmission unit that transmits a notification to the operator of the data collection device when the data collection device is
When the sensor is nearby, the data collection device is located at a position where it can capture radio waves emitted from the sensor with an intensity lower than the threshold;
Data collection system. The data collection device includes a position information storage unit that stores information on a receivable position that is a position where radio waves from the sensor in the wireless communication can be received with an intensity equal to or higher than the threshold value, and the data collection device configured to automatically receive the state quantity detected by the sensor when the sensor is in a receivable position;
The data collection system according to claim 1. The transmitting unit transmits to an operator of the data collection device that there is no wireless communication with the sensor when there is no wireless communication with the sensor despite being in the receivable position.
The data collection system according to claim 2. The data collection device has a data acquisition specifying unit that selects the sensor from which data is to be collected from among the plurality of sensors in which the installation information is stored.
The data collection system according to any one of claims 1 to 3. A plurality of sensors that are installed in one or more sensing target devices arranged in a management target area and detect state quantities of the sensing target equipment, and data of the state quantities detected by the sensors. an authentication step for individually associating the data to the data collection device that collects the data;
The data collection device approaches a range in which it can receive the state quantity detected by the sensor associated with the data collection device via wireless communication , and is able to receive radio waves from the sensor at an intensity equal to or higher than a threshold value. a receiving step of automatically receiving the state quantity detected by the sensor when
While the data collection device is receiving the state quantity detected by the sensor, the data collection device notifies the operator of the data collection device that it is communicating with the sensor, and indicates that the sensor whose state quantity has not been collected is nearby. and transmitting a notification to the operator of the data collection device if the data collection device is
When the sensor is nearby, the data collection device is located at a position where it can capture radio waves emitted from the sensor with an intensity lower than the threshold;
Data collection methods.

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