WO2022181043A1

WO2022181043A1 - Stay location proposal system, stay location proposal method, and program

Info

Publication number: WO2022181043A1
Application number: PCT/JP2021/048620
Authority: WO
Inventors: 貴丈大塚; 昌史村上
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2021-02-26
Filing date: 2021-12-27
Publication date: 2022-09-01
Also published as: JPWO2022181043A1

Abstract

The problem to be addressed by this disclosure is to propose a stay location better suited to preferences of a user. A stay location proposal system (1) comprises a first acquisition unit, a second acquisition unit, a storage unit (13), a selection unit, and a proposal unit. The first acquisition unit acquires environment information including measured values of a plurality of types of environmental factors measured by each of one or more sensor devices (2) respectively installed in a plurality of stay locations at which a user may stay. The second acquisition unit acquires position information about the user. The storage unit (13) stores preference information about the user regarding the plurality of types of environmental factors. The selection unit obtains a similarity between the environment information and the preference information. The selection unit selects one or more stay locations from among the plurality of stay locations on the basis of the similarity. The proposal unit proposes the one or more stay locations selected by the selection unit to the user.

Description

Staying Place Proposal System, Staying Place Proposing Method, and Program

The present disclosure relates to a place-to-stay proposal system, a place-to-stay proposal method, and a program, and more particularly to a place-to-stay proposal system, a place-to-stay proposal method, and a program for proposing a user's place of stay to a user.

As a conventional example, the seat proposal system described in Patent Document 1 will be exemplified. A seat proposal system described in Patent Document 1 (hereinafter referred to as conventional example) proposes a seat position suitable for each user's temperature sensitivity in a free address office environment.

The conventional example includes a temperature sensor for measuring the room temperature for each seat or for each seat area, an arithmetic processing means, a seat information DB for storing vacant seat information for each seat, a room temperature DB for storing measured room temperature data, and a room temperature for each user. A user DB for storing comfortable temperature zone data is provided. The arithmetic processing means accepts a request for seat position proposal, compares the input data at the time of the request with the user information in the user DB, and identifies the user. Further, the arithmetic processing means acquires the user's comfortable temperature zone data from the comfortable temperature zone DB. The arithmetic processing means extracts vacant seats from the seat information DB and obtains room temperature data for each vacant seat from the room temperature DB. Based on the comfortable temperature zone data of the user and the room temperature data of each vacant seat, the arithmetic processing means selects one or more candidate seats within or near the temperature range where the user feels comfortable from among the extracted vacant seats, and selects the candidate seats. To update the vacant seat information by excluding the seat selected by the user from among the vacant seats.

However, even if a seat position suitable for each user (user) is proposed based only on the room temperature of each seat (place of stay) as in the conventional example described in Patent Document 1, environmental factors other than the room temperature (temperature) may affect the user. may not feel comfortable.

JP 2013-185798 A

An object of the present disclosure is to provide a place-of-stay proposal system, a place-of-stay proposal method, and a program capable of proposing a place of stay more suitable for the user's taste.

A place-to-stay proposal system according to an aspect of the present disclosure includes a first acquisition unit, a second acquisition unit, a storage unit, a selection unit, and a proposal unit. The first acquisition unit acquires environmental information including measured values of a plurality of types of environmental factors measured by one or more sensor devices respectively installed at a plurality of places where a user can stay. A said 2nd acquisition part acquires the said user's positional information. The storage unit stores the user's preference information for the plurality of types of environmental factors. The selection unit obtains a degree of similarity between the environment information and the preference information, and selects one or more places of stay from among the plurality of places of stay based on the degree of similarity. The proposal unit proposes the one or more staying places selected by the selection unit to the user.

A place-to-stay proposal method according to an aspect of the present disclosure provides environmental information including measured values of multiple types of environmental factors measured by one or more sensor devices installed at a plurality of places where a user can stay. including the step of obtaining The method of suggesting a place to stay comprises the steps of: obtaining location information of the user; determining a degree of similarity between the user's preference information and the environment information with respect to the plurality of types of environmental factors; selecting one or more staying places from among the staying places. The method of suggesting a place to stay includes the step of proposing the selected one or more places to stay to the user.

A program according to one aspect of the present disclosure causes one or more processors to execute the staying place proposal method.

FIG. 1 is a system configuration diagram of a staying place proposal system according to an embodiment of the present disclosure. FIG. 2 is a block diagram of a sensor device used in the above system for suggesting a place to stay. FIG. 3 is a block diagram of a processing unit of the same staying place proposal system. FIG. 4 is a schematic diagram of a free address office in which the same staying place proposal system is operated. FIG. 5 is a schematic diagram of a screen on which a user is suggested by the same place-of-stay suggestion system.

The stay place proposal system, stay place proposal method, and program according to the embodiment of the present disclosure will be described in detail below with reference to the drawings. However, the configurations described in the following embodiments are merely examples of the present disclosure. The present disclosure is not limited to the following embodiments, and various modifications can be made according to design and the like as long as the effects of the present disclosure can be achieved.

(1) Overview of stay place proposal system according to embodiment A stay place proposal system 1 (hereinafter abbreviated as stay place proposal system 1) according to the embodiment provides a user with information suitable for the user's preference information. Suggest one or more places to stay.

The "place of stay" in the embodiment means a place where the user can stay for the purpose of work and rest in the free address office where the user works, such as a seat that the user (employee) can freely use Including work space, etc.

"Environmental factors" in the embodiment include the temperature (room temperature) of the place of stay and at least one of the humidity, illuminance, noise level and carbon dioxide concentration of the place of stay. Therefore, the "environmental information of the place of stay" in the embodiment means the measured value of the temperature of the place of stay, the measured value of humidity, the measured value of illuminance, the measured value of noise level, and the measured value of carbon dioxide concentration. and at least one.

The "preference information" in the embodiment refers to the user's preferences for environmental factors, such as sensitivity to heat, sensitivity to cold, preference for lively places, preference for quiet places, preference for bright places, preference for dark places, and so on. It contains information that expresses various preferences. Specifically, the "preference information" includes measured values of environmental factors that are presumed to make the user feel comfortable (hereinafter referred to as "preferred values of environmental factors").

(2) Configuration of Staying Place Proposing System According to Embodiment A staying place suggesting system 1 includes a processing unit 10 and a storage unit 13, as shown in FIG. Also, the stay place proposal system 1 may include a plurality of sensor devices 2 , a plurality of scanners 3 , and a plurality of transmitters 4 . Furthermore, the stay place proposal system 1 may include an information collection server 5 , an environment information database 6 , and a location information database 7 .

(2-1) Sensor Device At least one sensor device 2 is installed in each of the plurality of places of stay. The sensor device 2 measures the environmental factors of the place of stay, specifically the temperature of the place of stay and at least one of humidity, illuminance, noise level and carbon dioxide concentration. The sensor device 2 transmits measured values (measured values) by radio signals. However, in the embodiments described below, each of the plurality of sensor devices 2 measures all of temperature, humidity, illuminance, noise level, and carbon dioxide concentration. The sensor device 2 may also be configured to measure environmental factors other than humidity, illuminance, noise level and carbon dioxide concentration.

The sensor device 2 has multiple types of sensing devices 20, a processing circuit 21, and a communication circuit 22, as shown in FIG. However, the sensor device 2 has a power supply circuit (not shown) including a battery, and is configured to supply operating power to each sensing device 20 , processing circuit 21 and communication circuit 22 from the power supply circuit.

A plurality of types (five types in this embodiment) of sensing devices 20 include a temperature sensor that measures temperature (room temperature), a humidity sensor that measures relative humidity, an illuminance sensor that measures illuminance, a sound level meter that measures noise level, and carbon dioxide. It is a gas sensor that measures concentration.

The gas sensor is, for example, an NDIR (Non-dispersive Infrared) type gas sensor. However, the gas sensor may be a gas sensor other than the NDIR type gas sensor. Therefore, it is considered that the carbon dioxide concentration at the place of stay increases as the number of people staying at the place of stay increases. In addition, the carbon dioxide concentration at the place of stay is thought to increase as the frequency of ventilation at the place of stay becomes lower. In other words, the carbon dioxide concentration can be an indicator for estimating the infection risk of infectious diseases at the place of stay.

The processing circuit 21 analog-to-digital (A/D) converts the measured values (measured values of temperature, humidity, illuminance, noise level, and carbon dioxide concentration) measured by each sensing device 20 . The processing circuit 21 outputs data of each measured value (measured value data) after A/D conversion to the communication circuit 22 .

The communication circuit 22 performs wireless communication using, for example, the Bluetooth (registered trademark) Low Energy communication method. However, the communication method of the communication circuit 22 is not limited to Bluetooth (registered trademark) Low Energy, and may be, for example, Wi-Fi (registered trademark).

The communication circuit 22 creates a transmission frame including measurement value data output from each sensing device 20, and transmits the created transmission frame by radio signal. A unique identification code (Bluetooth (registered trademark) Address) assigned to the sensor device 2 is set as the transmission source address of the transmission frame, and a broadcast address is set as the transmission destination address. The communication circuit 22 transmits radio signals (beacon signals) called advertisement packets at predetermined time intervals and with predetermined transmission power. Communication circuitry 22 may transmit multiple measurements via beacon signals, or may transmit multiple measurements via wireless signals different from the beacon signals.

(2-2) Transmitters Each of the multiple transmitters 4 is carried by each of multiple users. Each transmitter 4 periodically transmits a beacon signal (advertisement packet) by the Bluetooth (registered trademark) Low Energy communication method. A unique identification code (Bluetooth (registered trademark) Address) assigned to each transmitter 4 is set as the transmission source address of this beacon signal. However, each transmitter 4 may be a mobile communication terminal (for example, a smart phone) equipped with a wireless communication function based on the Bluetooth (registered trademark) Low Energy communication method.

(2-3) Scanner At least one of the plurality of scanners 3 is installed at each of the plurality of places of stay. Each scanner 3 receives wireless signals transmitted from each of the plurality of sensor devices 2 and the plurality of transmitters 4 . Each scanner 3 demodulates the transmission frame from the received radio signal, the demodulated transmission frame, the signal strength of the received radio signal (RSSI: Received Signal Strength Indication), the identification code assigned to each scanner 3, to the information collection server 5. Communication between each scanner 3 and the information collection server 5 is performed by a wired LAN. However, communication between each scanner 3 and the information collection server 5 may be performed by wireless LAN.

(2-4) Information Collection Server The information collection server 5 is implemented by, for example, a computer system and a program executed by the computer system.

The information collection server 5 communicates with each scanner 3 and receives the transmission frame of the transmitter 4, the transmission frame of the sensor device 2, the signal strength of the radio signal, and the identification code of each scanner 3 from each scanner 3. and store it in memory.

The information collection server 5 determines the position of each transmitter 4 (the position of the user carrying the transmitter 4) based on the source address in the transmission frame of the transmitter 4, the identification code of the scanner 3, and the signal strength of the radio signal. ). Then, the information collecting server 5 registers the estimated position of each transmitter 4 in the position information database 7 in association with the identification code of each transmitter 4 and the time when the radio signal was received.

Further, when each sensor device 2 is movably installed on a fixture such as a desk, the information collection server 5 collects the transmission source address, the identification code of the scanner 3, and the wireless signal in the transmission frame of the sensor device 2. The position of each sensor device 2 is estimated based on the signal strength. Then, the information collecting server 5 registers the estimated position of each sensor device 2 in the position information database 7 in association with the identification code of each sensor device 2 and the time when the radio signal was received. However, if each sensor device 2 is immovably installed on the ceiling, wall, or the like, the position of each sensor device 2 is registered in the position information database 7 in advance.

Furthermore, the information collection server 5 extracts measured values of a plurality of types of environmental factors from the transmission frame of each sensor device 2, and stores the measured values of these environmental factors in the identification code of each sensor device 2 and the time when the radio signal was received. , and registered in the environment information database 6.

(2-5) Environmental information database The environmental information database 6 includes one or more auxiliary storage devices (hard disk device, SSD device, etc.), data writing to the auxiliary storage device and data reading from the auxiliary storage device. and a control device for processing.

Based on a command from the information collection server 5, the control device stores the measurement values of multiple types of environmental factors sent from each of the sensor devices 2 for each of the multiple types, with the measured time (actually the reception time of the radio signal). Write to the auxiliary storage device in correspondence.

(2-6) Location Information Database The location information database 7 includes one or more auxiliary storage devices (hard disk device, SSD device, etc.), data writing to the auxiliary storage device and data reading from the auxiliary storage device. and a control device for processing.

Based on a command from the information collection server 5, the control device receives the position information sent from each transmitter 4 or each transmitter 4 and each sensor device 2, based on the time when each position information was estimated (actually, the radio signal time of reception) and write it to the auxiliary storage device.

(2-7) Storage Unit The storage unit 13 includes one or more auxiliary storage devices (hard disk device, SSD device, etc.), and processes such as writing data to the auxiliary storage device and reading data from the auxiliary storage device. and a controller for performing.

The storage unit 13 stores user preference information for multiple types of environmental factors. The control device of the storage unit 13 stores the preference information of each user in the auxiliary storage device in association with the unique user IDs assigned to a plurality of users based on the command of the processing unit 10 as will be described later. and read from the auxiliary storage device. However, the user ID of each user is substituted with a unique identification code (Bluetooth (registered trademark) Address) assigned to the transmitter 4 carried by each user.

(2-8) Processing Unit The processing unit 10 has a first acquisition section 11, a second acquisition section 12, a selection section 14 and a proposal section 15, as shown in FIG. The processing unit 10 is implemented, for example, by a computer system having one or more processors and a program executed by the computer system. However, the processing unit 10 not only has the functions of the first acquisition unit 11, the second acquisition unit 12, the selection unit 14, and the proposal unit 15, but also functions other than those functions (preference information, as will be described later). function to create data, function to predict measured values of environmental elements, etc.). The program may be recorded in advance in the memory of the computer system, may be provided through an electric communication line, or may be recorded in a non-temporary recording medium such as a computer system-readable memory card, optical disk, or hard disk drive. may be provided. A processor in a computer system consists of one or more electronic circuits, including semiconductor integrated circuits (ICs) or large scale integrated circuits (LSIs). The integrated circuit such as IC or LSI referred to here is called differently depending on the degree of integration, and includes integrated circuits called system LSI, VLSI (Very Large Scale Integration), or ULSI (Ultra Large Scale Integration). Furthermore, an FPGA (Field-Programmable Gate Array), which is programmed after the LSI is manufactured, or a logic device capable of reconfiguring the bonding relationship inside the LSI or reconfiguring the circuit partitions inside the LSI, shall also be adopted as the processor. can be done. A plurality of electronic circuits may be integrated into one chip, or may be distributed over a plurality of chips. A plurality of chips may be integrated in one device, or may be distributed in a plurality of devices. A computer system, as used herein, includes a microcontroller having one or more processors and one or more memories. Accordingly, the microcontroller also consists of one or more electronic circuits including semiconductor integrated circuits or large scale integrated circuits.

The first acquisition unit 11 accesses the environment information database 6 and acquires measured values of multiple types of environmental factors of each sensor device 2 registered in the environment information database 6 . Specifically, the first acquisition unit 11 gives a command to the control device of the environment information database 6, and acquires the measured values of the multiple types of environmental factors stored in the auxiliary storage device of the environment information database 6 through the control device. read (obtain).

The second acquisition unit 12 accesses the position information database 7 and acquires the position information of each transmitter 4 registered in the position information database 7. Specifically, the second acquisition unit 12 gives a command to the control device of the position information database 7, and reads the position information of each transmitter 4 stored in the auxiliary storage device of the position information database 7 through the control device. (get).

The selection unit 14 obtains the degree of similarity between the user's preference information and the environmental information of each place of stay for the user whose place of stay is to be proposed. A specific method for obtaining the degree of similarity will be described later. The selection unit 14 selects one or more places of stay estimated to be suitable for the user's preference from among the plurality of places of stay based on the degree of similarity.

The proposal unit 15 proposes one or more places of stay selected by the selection unit 14 to the user. For example, the proposal unit 15 sends information indicating one or more places of stay selected by the selection unit 14 (the position of the corresponding place of stay on a map, or a unique code attached to each place of stay, etc.) to each The information is displayed on a display device installed in a place where the user can visually recognize it. The display device is, for example, a tablet terminal equipped with a communication function.

In addition, the proposal unit 15 may cause the display device to display the environmental information (for example, the latest measured values of each environmental factor) of the proposed stay place together with the information indicating the proposed stay place. Alternatively, the proposal unit 15 may display information indicating the proposed stay place on the screen of the smartphone carried by each user. Thus, the proposal unit 15 performs data communication with the display device or the user's smart phone using a wired LAN or wireless LAN, thereby causing the display device or the smart phone to display information indicating a proposed place of stay or the like.

(3) Operation of Staying Place Proposal System According to Embodiment Next, a specific operation of the staying place proposing system 1 will be described.

(3-1) Description of Places of Stay FIG. 4 is a sketch of a plurality of places of stay. A plurality of places to stay are formed by dividing one floor of an office building into 16 sections. However, walls or partitions may be installed between individual staying places, or may not be installed.

Here, in order to specify each place of stay, the vertical four columns in FIG. . Therefore, each staying place can be denoted as A1-A4, B1-B4, C1-C4, D1-D4.

As shown in FIG. 4, one sensor device 2 and one scanner 3 are installed at each place of stay. However, a plurality of sensor devices 2 and scanners 3 may be installed at one or more places of stay.

Boundary points of places of stay A1, A2, B1 and B2, boundary points of places of stay A3, A4, B3 and B4, boundary points of places of stay C1, C2, D1 and D2, and boundaries of places of stay C3, C4, D3 and D4 One lighting fixture 81 is installed on each ceiling of the boundary point. In addition, one unit of air conditioning equipment 80 for performing cooling/heating, dehumidification, ventilation, etc. is installed in each of the places of stay A1, A4, D1, and D4. Furthermore, one display device 82 comprising a tablet terminal is installed at each of the places of stay A2, B3, C2, and D3. Windows are provided in the outward (upward in FIG. 4) walls of the staying places A1, B1, C1, and D1 and in the outward (downward in FIG. 4) walls of the staying places A4, B4, C4, and D4. It is In other words, depending on the time of day, outside light (sunlight) may enter these places of stay through the windows. Therefore, the environmental factors at the 16 places of stay are not uniform and change depending on the time of day and the weather.

(3-2) Operation of Acquiring User's Preference Information First, the operation of acquiring preference information of each of a plurality of users and storing it in the storage unit 13 in the place-to-stay proposal system 1 will be described.

A plurality of users are employees working in the free address office shown in FIG. Each user can freely change the place of stay during the working hours of the day (for example, from 9:00 to 17:00).

Based on the measured values of each environmental factor accumulated in the environment information database 6 and the position information of each user accumulated in the position information database 7 for a certain period of time (several weeks to several months), the processing unit 10: Acquire preference information for each user.

For example, the processing unit 10 divides the working hours into a plurality of time zones for each hour, and calculates the average value of the measured values of the environmental factors of all the places where the user stayed in each time zone for each type of environmental factor. calculate. Then, the processing unit 10 causes the storage unit 13 to store the average value of the measured values calculated for each of the plurality of time periods and the plurality of users for each environmental factor as the preference information of each user in each time period. That is, the storage unit 13 associates the user IDs of the plurality of users with the average values of the measured values of the temperature, humidity, illuminance, noise level, and carbon dioxide concentration for each time period. Stored as user preference information.

Note that the processing unit 10 may adopt the most frequent value among the measured values of each environmental factor as the preferred value of each environmental factor. Alternatively, the processing unit 10 obtains the arithmetic mean of the remaining measured values of each environmental factor after excluding infrequently measured values, and adopts the average value as the preferred value of each environmental factor. good too.

(3-3) Operation of Proposing a Place of Stay for the User Next, an operation of proposing a place of stay to the user by the system 1 for proposing a place of stay will be described.

When a new user (transmitter 4) is detected in any of the staying places A2, A4, B3 and C3 where the display device 82 is installed, the staying place proposal system 1 sends a message to the user Start an action to suggest a place to stay.

First, the second acquisition section 12 of the processing unit 10 acquires the user ID of the user to be proposed from the location information database 7 and passes the acquired user ID to the selection section 14 . The selection unit 14 selects the time (hereinafter, abbreviated as start time) at which the operation of suggesting a place to stay for the user belongs among the preference information associated with the user ID received from the second acquisition unit 12. Time zone preference information is acquired from the storage unit 13 . Further, the selection unit 14 acquires, from the environment information database 6, the environment information of each place of stay in the time zone to which the start time belongs, through the first acquisition unit 11 .

Next, the selection unit 14 obtains the degree of similarity between the user's preference information and the environmental information of each place of stay. In this embodiment, the selection unit 14 determines the Euclidean distance D(x, y) is calculated. The Euclidean distance D(x, y) is calculated by the following formula.

However, x _i (i=1, 2, 3, 4, 5) is the preferred value of each environmental factor (temperature, humidity, illuminance, noise level, carbon dioxide concentration) at an arbitrary time. y _i (i=1, 2, 3, 4, 5) are the measured values of each environmental factor (temperature, humidity, illuminance, noise level, carbon dioxide concentration) at arbitrary time. w _i (i = 1, 2, 3, 4, 5) is the weight of each environmental factor (temperature, humidity, illuminance, noise level, carbon dioxide concentration) at an arbitrary time, and is a value from 0 to 1 be. The weight _wi for each environmental factor is increased as the variation (standard deviation) of the average value of the measured values for each time period is smaller. For example, the noise level has a large daily variation, so the weight _wi is small, and the temperature has a relatively small daily variation, so the weight _wi is large. When calculating the degree of similarity (Euclidean distance) in this way, by weighting according to the variation in the average value of the measured values of each environmental factor, it is possible to reduce the influence of fluctuations in each environmental factor.

Therefore, the similarity between the preferred value of each of the plurality of types of environmental factors included in the preference information and the measured value of each of the plurality of types of environmental factors included in the environment information has a small Euclidean distance calculated by the above formula. the higher the The selection unit 14 selects a place of stay (for example, place of stay B1) having the highest degree of similarity between the user's preference information and the environment information from among the 16 places of stay A1, . . . , D4. Then, the selection unit 14 passes the position information of the selected place of stay to the proposal unit 15 .

The proposal unit 15 creates a screen for proposal including a layout diagram G1 in which the position of the place of stay B1 selected by the selection unit 14 is indicated by a pin P1, and a table T1 outlining user preference information ( See Figure 5). Then, the proposal unit 15 transmits the data for displaying the created proposal screen to the display device 82 installed at the place where the user was staying at the start time.

The display device 82 causes a display device such as a liquid crystal display to display a proposal screen including the layout chart G1 and the table T1 based on the data received from the proposal unit 15 . The user can know the place of stay B1 proposed by the place-of-stay proposal system 1 by looking at the screen for suggestion displayed by the display device 82 . Note that the proposal unit 15 may present environmental information (temperature, humidity, illuminance, noise level, carbon dioxide concentration) of the place of stay selected by the selection unit 14 to the user.

As described above, the stay place proposal system 1 proposes a stay place suitable for the user's preferences based on the user's preference information for multiple types of environmental factors. Therefore, the place-to-stay proposal system 1 can propose a place to stay more suitable for the taste of the user than in the conventional example that proposes a seat to the user based on only one type of environmental factor (temperature). .

Here, the place-of-stay proposal system 1 may exist in the building (office building) having the place of stay, or may exist in a place away from the building. On the other hand, the information collection server 5, environment information database 6, and location information database 7 are preferably located in a building. When the stay place proposal system 1 exists in a place away from the building, the stay place proposal system 1 is configured to communicate with the environmental information database 6 and the position information database 7 via a wide area network (WAN) such as the Internet. be. The place-of-stay proposal system 1 may include the information collection server 5, the environment information database 6, and the location information database 7 as components. The place-of-stay proposal system 1 may further include at least one of the sensor device 2, the scanner 3, and the transmitter 4 as further components.

(4) Modifications of Place of Stay Proposal System Several modifications of the place of stay proposal system 1 will be described below. However, the configuration of the place-of-stay proposal system 1 of each modified example described below is common to the configuration of the place-of-stay proposal system 1 of the embodiment. Therefore, illustration of the configuration of the stay place proposal system 1 of each modified example is omitted.

(4-1) Modification 1
A staying place proposal system 1 of Modified Example 1 (hereinafter abbreviated as Modified Example 1) differs from the embodiment in the operation of proposing a staying place to a user. In Modified Example 1, the environment information accumulated in the environment information database 6 is used to predict the time change of the environmental factors for the current day from the average value of the environmental factors for each time period in the last several days, and the preference information for each time period is obtained. Then, the similarity of the predicted environment information is calculated.

The processing unit 10 in Modification 1 calculates the predicted value of each environmental factor for each time period of the day and for each place of stay, and stores the calculated predicted value in the storage unit 13 . Here, the processing unit 10 periodically (for example, before starting work each day) acquires environmental information for the last few days (for example, the past five days including the previous day) from the environment information database 6, It is preferable to calculate the predicted value of each environmental factor from the environmental information.

For example, the processing unit 10 measures the temperature, humidity, illuminance, noise level, and carbon dioxide concentration at each place of stay in the last few days, every hour from 9:00 to 17:00 Calculate the average value (average value of arithmetic mean). Then, the processing unit 10 registers the average values of the temperature, humidity, illuminance, noise level, and carbon dioxide concentration in each place of stay and each time period in the environment information database 6 as predicted values of each environmental element.

Thus, the selection unit 14 of the processing unit 10 determines the degree of similarity (Euclidean distance) between the user's preference information and the predicted value of the environmental factor at each place of stay and each time zone registered in the environment information database 6. Ask. The selection unit 14 selects the place of stay having the highest similarity between the user's preference information and the environment information (predicted value) from among the 16 places of stay A1, . . . , D4. Then, the location information of the place of stay selected by the selection unit 14 is passed to the proposal unit 15 and proposed to the user through the proposal unit 15 .

As described above, according to the stay place proposal system 1 of the modified example 1, by predicting the environment information of the stay place, it is possible to shorten the time until the stay place suitable for the user's preference information is selected. can be planned.

(4-2) Modification 2
The place-of-stay proposal system 1 of Modification 2 (hereinafter abbreviated as Modification 2) differs from Modification 1 in the method of obtaining the predicted value of each environmental element for each time zone. The processing unit 10 in Modification 2 obtains the predicted value of each environmental element for each time period using the learned model. A trained model is generated by machine learning. A machine learning algorithm is, for example, a neural network.

The processing unit 10 in Modification 2 receives, for example, the measured values of the environmental factors for several weeks accumulated in the environmental information database 6, and uses the error backpropagation method to determine the parameters of the functions that make up the neural network. Find the gradient of the objective function for . However, the processing unit 10 may add day-of-the-week information and weather information (maximum temperature, minimum temperature, weather, etc.) as inputs. In addition, machine learning algorithms are not limited to neural networks, XGB (eXtreme Gradient Boosting) regression, random forest, decision tree, logistic regression, support vector machine (SVM) vector machine), Naive Bayes classifier, k-nearest neighbors, or the like. Furthermore, the machine learning algorithm may be Gaussian Mixture Model (GMM), k-means clustering, or the like. Also, the learning method of machine learning used in the processing unit 10 may be any of supervised learning, unsupervised learning, and reinforcement learning.

The selection unit 14 in Modification 2 uses the environment information at the start time as input, and uses the learned model obtained as described above to obtain the predicted value of each environmental element for each place of stay and time period. Then, the selection unit 14 obtains the degree of similarity (Euclidean distance) between the user's preference information and the predicted value of the environmental factor at each place of stay and each time period. The selection unit 14 selects the place of stay having the highest similarity between the user's preference information and the environment information (predicted value) from among the 16 places of stay A1, . . . , D4. Then, the location information of the place of stay selected by the selection unit 14 is passed to the proposal unit 15 and proposed to the user through the proposal unit 15 .

As described above, according to the stay place proposal system 1 of the modification 2, by obtaining the predicted value of the environmental information of the stay place using the learned model, until the stay place suitable for the user's preference information is selected time can be further shortened.

(4-3) Modification 3
The place-to-stay proposal system 1 of Modification 3 (hereinafter abbreviated as Modification 3) differs from the embodiment in the method of obtaining preference information (preferred values of environmental factors) of each of a plurality of users.

The processing unit 10 in Modification 3 acquires the average value of the measured values of each environmental factor for each time zone at all places of stay and the difference between the measured values of each environmental factor for each time zone at the place of stay of the user. . The processing unit 10 averages (arithmetic mean) the differences in the measured values of each environmental factor for each time slot in the place where the user stays, and stores the average values in the storage unit 13 as the differences from the preferred values of the preference information. Memorize. Furthermore, the processing unit 10 acquires the difference between the preferred value of the user's preference information from the storage unit 13, and adds the measured value of each environmental factor of the place of stay acquired from the environment information database 6 to the user's preference information. A preferred value for each environmental factor is calculated by adding the difference from the preferred value.

However, according to the stay location proposal system 1 of Modified Example 3, it is possible to reduce the influence of seasonal climate changes on preference information.

(5) Staying Place Proposing Method and Program In the staying place proposing method according to the embodiment, one or more sensor devices 2 respectively installed at a plurality of staying places A1, . Obtaining environmental information including measurements of multiple types of environmental factors. A method for proposing a place to stay according to an embodiment includes the steps of acquiring location information of a user, determining the degree of similarity between the user's preference information and environmental information for a plurality of types of environmental factors, and determining a plurality of places to stay based on the degree of similarity. and selecting one or more stay locations from among. A method for suggesting a place to stay according to an embodiment includes the step of proposing one or more selected places to stay to a user.

The place-to-stay proposal method according to the embodiment may be executed by the above-described place-to-stay proposal system 1, or may be realized by causing one or more processors to execute the program (computer program) according to the embodiment. do not have.

According to the method and program for suggesting a place to stay according to the embodiment, it is possible to propose a place to stay that is more suitable for the user's taste.

(6) Summary The place-to-stay proposal system (1) according to the first aspect of the present disclosure includes a first acquisition unit (11), a second acquisition unit (12), a storage unit (13), a selection unit ( 14) and a proposal unit (15). A first acquisition unit (11) acquires an environment including measured values of a plurality of types of environmental factors measured by one or more sensor devices (2) respectively installed at a plurality of places where a user can stay. Get information. A second acquisition unit (12) acquires location information of the user. A storage unit (13) stores user preference information for a plurality of types of environmental factors. A selection unit (14) obtains the degree of similarity between the environment information and the preference information. A selection unit (14) selects one or more places of stay from a plurality of places of stay based on the degree of similarity. A proposal unit (15) proposes to the user one or more places of stay selected by the selection unit (14).

A place-to-stay proposal system (1) according to a first aspect provides a place to stay that is more suitable for the user's taste than a conventional example that proposes a seat to the user based on only one type of environmental factor (temperature). can be proposed.

A stay place proposal system (1) according to the second aspect of the present disclosure can be realized by combining with the first aspect. In the place-to-stay proposal system (1) according to the second aspect, the selection unit (14) selects the measured values of the plurality of types of environmental factors included in the environmental information and the preferred values of the plurality of types of environmental factors included in the preference information. It is preferable to obtain the degree of similarity from the Euclidean distance between .

The place-to-stay proposal system (1) according to the second aspect can easily obtain the degree of similarity.

A stay location proposal system (1) according to the third aspect of the present disclosure can be realized by combining with the second aspect. In the stay place proposal system (1) according to the third aspect, the preferred values of the plurality of types of environmental factors are the plurality of types of environmental factors included in the environmental information during the user's stay at the place where the user stayed. is preferably determined by averaging the respective measurements of .

The place-to-stay proposal system (1) according to the third aspect can easily obtain suitable values for multiple types of environmental factors.

A stay place proposal system (1) according to the fourth aspect of the present disclosure can be realized by a combination with any one of the first to third aspects. In the stay place proposal system (1) according to the fourth aspect, it is preferable that the proposal unit (15) presents the user with environmental information of one or more stay places selected by the selection unit (14).

The stay place proposal system (1) according to the fourth aspect can inform the user of the environment information of the proposed stay place.

A stay place proposal system (1) according to the fifth aspect of the present disclosure can be realized by a combination with any one of the first to fourth aspects. In the stay place proposal system (1) according to the fifth aspect, the plurality of types of environmental factors include the temperature of the stay place and at least one of the humidity, illuminance, noise level and carbon dioxide concentration of the stay place. is preferred.

The stay place proposal system (1) according to the fifth aspect can propose a stay place that finely corresponds to the preferences of the user.

A place-to-stay proposal system (1) according to the sixth aspect of the present disclosure can be realized by combining with any one of the first to fifth aspects. In the place-to-stay proposal system (1) according to the sixth aspect, the selection unit (14) preferably predicts the measured value of at least one type of environmental factor among the plurality of types of environmental factors. Preferably, the selection unit (14) obtains the degree of similarity between the environment information including the predicted measured value and the preference information.

A place-to-stay proposal system (1) according to a sixth aspect obtains the degree of similarity between environment information including a measured value (predicted value) predicted by a selection unit (14) and preference information, thereby It is possible to further shorten the time required to select a suitable place to stay.

A staying place proposal method according to a seventh aspect of the present disclosure measures a plurality of types of environmental factors measured by one or more sensor devices (2) respectively installed at a plurality of staying places where a user can stay. It includes obtaining environment information including values. A method of suggesting a place to stay according to a seventh aspect includes a step of acquiring location information of a user; selecting one or more stay locations from among the stay locations. A staying place proposal method according to an eighth aspect includes the step of proposing the selected one or more staying places to the user.

A staying place proposal method according to a seventh aspect proposes a staying place more suitable for the user's preference than the conventional example of suggesting a seat to the user based on only one type of environmental factor (temperature). be able to.

A program according to the eighth aspect of the present disclosure causes one or more processors to execute the method of suggesting a place to stay according to the seventh aspect.

The program according to the eighth aspect can propose a place to stay more suitable for the user's preference than the conventional example that proposes a seat to the user based on only one type of environmental factor (temperature). .

1 Place of Stay Proposal System 2 Sensor Device 11 First Acquisition Unit 12 Second Acquisition Unit 13 Storage Unit 14 Selection Unit 15 Proposal Unit

Claims

a first acquisition unit that acquires environmental information including measurement values of a plurality of types of environmental factors measured by one or more sensor devices respectively installed at a plurality of places where a user can stay;
a second acquisition unit that acquires the location information of the user;
a storage unit that stores the user's preference information for the plurality of types of environmental factors;
a selection unit that obtains a degree of similarity between the environment information and the preference information and selects one or more places of stay from among the plurality of places of stay based on the degree of similarity;
a proposal unit that proposes the one or more places of stay selected by the selection unit to the user;
comprising a
Stay place suggestion system.
The selection unit obtains the similarity by Euclidean distance between the measured values of the plurality of types of environmental factors included in the environment information and the preferred values of the plurality of types of environmental factors included in the preference information.
The staying place proposal system according to claim 1.
The preferred values of the plurality of types of environmental factors are obtained by averaging respective measured values of the plurality of types of environmental factors included in the environmental information during the stay of the user at the place of stay where the user stayed. sought by
A staying place proposal system according to claim 2.
The proposing unit presents the user with the environmental information at the one or more places of stay selected by the selecting unit;
A staying place proposal system according to any one of claims 1 to 3.
The plurality of types of environmental factors include temperature of the place of stay and at least one of humidity, illuminance, noise level and carbon dioxide concentration of the place of stay,
A staying place proposal system according to any one of claims 1 to 4.
The selection unit predicts the measured value of at least one type of environmental factor among the plurality of types of environmental factors, and obtains a degree of similarity between the environmental information including the predicted measured value and the preference information.
A staying place proposal system according to any one of claims 1 to 5.
a step of acquiring environmental information including measurement values of a plurality of types of environmental factors measured by one or more sensor devices installed at each of a plurality of places where the user can stay;
obtaining location information of the user;
obtaining a degree of similarity between the user's preference information and the environment information for the plurality of types of environmental factors, and selecting one or more places of stay from among the plurality of places of stay based on the degree of similarity;
suggesting the selected one or more places of stay to the user;
including,
How to suggest a place to stay.
to one or more processors;
executing the method of suggesting a place to stay according to claim 7;
program.