JP2017073633A - Information processing device, communication system, communication control method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device and a method which can automatically set a condition to enable radio communication without pressing a communication band to each of a plurality of detection apparatuses.SOLUTION: The device, which is an information processing device which controls communication with the plurality of detection apparatuses which detect environmental information about an environment, includes: a storage unit 61 which stores the communication condition of radio communication to be used, the number of the detection apparatuses which perform communication and a frequency at which each detection apparatus transmits environmental information; a calculation unit 62 which, based on the stored communication condition, the number of the detection apparatuses and the frequency, calculates a time interval as a condition in which each detection apparatus transmits the environmental information; and a transmitter unit 63 which transmits the calculated interval to each detection apparatus, to request each detection apparatus to change a notification time.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an information processing device that controls communication with a plurality of detection devices that detect information about an environment, a communication system that includes the plurality of detection devices and the information processing device, and a method and program for controlling the communication.

  There is known a technique for detecting whether or not a person is present at each position by using a thermopile sensor that can measure the surface temperature of a distant object by dividing the area finely according to resolution and measuring each area (for example, Patent Literatures 1 to 3).

  Although not a person, there is also known a technique for detecting (sensing) information (environmental information) related to the environment such as illuminance, temperature, and humidity using a wireless network and controlling the environment comfortably (for example, Patent Document 4). reference). Therefore, if these techniques are used, it is possible to perform lighting control by turning on illumination when a person changes from absence to presence.

  In a system using a wireless network, a plurality of sensors cannot transmit data simultaneously, and the plurality of sensors share a limited communication band. The communication band represents the amount of information (data amount) that can be transmitted and received by wireless communication within a certain time. This is because if a plurality of sensors try to transmit data at the same time, a collision occurs, packet loss may occur, and the upper limit of the communication band is exceeded, making communication impossible.

  Priorities can be set for the sensors so that a plurality of sensors do not transmit data at the same time, and data can be transmitted to the sensors according to the priorities. However, there is a problem in that it is necessary to determine conditions under which normal wireless communication can be performed without squeezing the communication band, and settings cannot be made without a specialist engineer. In addition, since different settings for each sensor are manually performed, there is a problem that it takes time and effort for the user.

  For this reason, it has been desired to provide an apparatus, a method, and the like that can automatically set conditions for performing wireless communication without compressing the communication band for each of a plurality of sensors.

  This invention is made in view of the said subject, Comprising: It is information processing apparatus which controls communication between the some detection apparatus which detects the environmental information regarding an environment, Comprising: Communication conditions and communication of wireless communication to be used are communicated Based on the storage unit that stores the number of detection devices to be performed and the frequency with which each detection device transmits environmental information, and the communication conditions and the number and frequency of detection devices stored in the storage unit, each detection device obtains environmental information. Information including a calculation unit that calculates a time interval as a transmission condition, and a transmission unit that transmits the time interval calculated by the calculation unit to each detection device and requests each detection device to change the time interval. A processing device is provided.

  According to the present invention, it is possible to automatically set conditions for performing wireless communication without compressing the communication band for each of the plurality of detection devices.

The figure which showed the whole structure of the communication system. The figure which showed the hardware and software structure of the sensor module, wireless GW, and control server which comprise a communication system. The figure which showed an example of the hardware and software structure of the module which controls an apparatus. The functional block diagram of a control server. The figure explaining a communication band. The flowchart which showed 1st Embodiment of the process which a control server performs. The flowchart which showed 2nd Embodiment of the process which a control server performs. The figure explaining the information transmitted / received by communication band and communication. The flowchart which showed 3rd Embodiment of the process which a control server performs. The figure explaining the kind of space. The flowchart which showed 4th Embodiment of the process which a control server performs. The figure explaining the kind of sensor. The flowchart which showed 5th Embodiment of the process which a control server performs. The flowchart which showed 6th Embodiment of the process which a control server performs.

  FIG. 1 is a diagram showing an overall configuration of a communication system. The communication system includes a plurality of detection devices that detect environmental information related to the environment, and an information processing device that controls communication between the plurality of detection devices. FIG. 1 shows a sensor module 10 including a plurality of sensors as a plurality of detection devices, and a control server 11 as an information processing device. In FIG. 1, a wireless gateway (GW) 12 is shown as a relay device that relays communication between the sensor module 10 and the control server 11.

  The communication between the sensor module 10 and the wireless GW 12 is wireless communication using a wireless LAN or the like, and the communication between the wireless GW 12 and the control server 11 is wired using a wired network 13 such as a LAN, WAN, or the Internet. Network communication.

  The sensor module 10 includes a thermopile sensor in the example shown in FIG. The thermopile sensor detects the surface temperature of each region in units obtained by dividing the lower surface of the sensor module 10 into, for example, 4 × 4 rectangular regions (mesh). Here, an example in which the image is divided into 4 × 4 meshes has been described, but an 8 × 8 mesh or a 16 × 16 mesh may be used. The thermopile sensor includes a plurality of sensors corresponding to a plurality of meshes. Therefore, in the 4 × 4 mesh, the thermopile sensor has 16 sensors.

  The surface temperature to be detected is the surface temperature for each mesh. The sensor module 10 detects the surface temperature as environmental information, and transfers the environmental information to the wireless GW 12 by wireless communication. The wireless GW 12 transmits the transferred environment information to the control server 11 via the wired network 13.

  The control server 11 performs algorithm processing on the environmental information detected by the sensor module 10 and determines the presence or absence of a person. Based on this determination, the control server 11 performs control such as stopping the operation of the lighting device and the air conditioning device when absent, thereby realizing energy saving.

  When constructing such a system in a newly constructed building, it can be constructed by drawing a wired cable around the ceiling or behind the wall during construction. When building an existing building in the same way, ceiling and wall construction is required, and it is not easy to implement. However, by performing communication by wireless communication as described above instead of a wired cable, retrofitting to an existing building and changing and expanding after installation are facilitated.

  In the example shown in FIG. 1, the surface temperature of each mesh is transferred as environmental information, and the surface temperature of 26 ° C. or higher is shown in gray, and the temperature lower than 26 ° C. is shown in white. By distinguishing between gray and white, it can be determined that there is a person in the mesh having a high temperature indicated by gray and that there is no person in the mesh having a low temperature indicated by white. In this example, it is determined that Mr. A, Mr. B, and Mr. D are present and Mr. C is absent.

  The above determination is performed by the control server 11, but the above classification may be performed by the control server 11 or the sensor module 10. When the sensor module 10 performs, instead of transmitting the surface temperature, a mesh having a threshold value of 26 ° C. or higher is classified as bit 1, a mesh having a temperature lower than 26 ° C. is classified as bit 0, and a bit for each mesh is transmitted. it can. Thereby, since the process by the control server 11 is reduced, faster control is possible.

  With reference to FIG. 2, the hardware and software configurations of the sensor module 10, the control server 11, and the wireless GW 12 included in the communication system will be described. The sensor module 10 includes a human sensor 20 for detecting a person based on the surface temperature, in addition to a temperature / humidity sensor 21 for measuring the temperature and humidity of the environment, and measuring the illuminance which is the brightness of the environment. And an illuminance sensor 22 for doing so. The sensor module 10 includes a sensor driver 23 that drives these sensors.

  The sensor module 10 includes the sensor driver 23 and a microcomputer 24 that is a control circuit. The operation of the sensor driver 23 is controlled by the microcomputer 24. The sensor module 10 further includes an antenna 25, an antenna I / F 26, and a wireless module 27. The antenna 25 is used for wireless communication with the wireless GW 12 and transmits environmental information by radio waves. The antenna I / F 26 connects the antenna 25 and the wireless module 27, and the wireless module 27 controls reception of information transmitted from the antenna 25 and information from other devices. The wireless module 27 converts the environment information into a wireless protocol packet used in wireless communication, and transfers the packet to the wireless GW 12.

  The wireless GW 12 includes an antenna 30 that receives the packet from the sensor module 10, a wireless module 31 that translates the received packet and returns it to the environment information, and an antenna I / F 32 that connects the antenna 30 and the wireless module 31. Prepare. The wireless GW 12 includes a microprocessor 33, a memory 34, and a wired network module 35. The wireless module 31 temporarily stores environment information in the memory 34. For example, the microprocessor 33 packs the environment information of the plurality of sensor modules 10 notified in a cycle of 1 second, puts them into one, instructs the wired network module 35, and transfers the environment information to the control server 11.

  The control server 11 includes a microprocessor 40, a memory 41, a storage 42, a wired network module 43, a video module 44, and a device control module 45. The wired network module 43 receives the environment information transferred from the wireless GW 12 and stores it in the storage 42 such as an HDD. The microprocessor 40 reads the program stored in the storage 42 to the memory 41 and executes it, and uses the environmental information accumulated in the storage 42 to determine the presence or absence of a person in each mesh. The microprocessor 40 executes the program and instructs the video module 44 to visualize the determined result, and also instructs the device control module 45 to control the operation state of the lighting device, the air conditioner, and the like.

  The video module 44 represents each area detected by the sensor module 10 as shown in FIG. 1 as a plurality of rectangles, changes the color of the rectangle where a person is present, and represents characters such as “present” or “absent”. Equally, the area where people are present can be seen with eyes. The equipment control module 45 performs control such as stopping the operation of lighting equipment and air conditioning equipment in a space where there is no person. The device control module 45 can perform adjustment of brightness, temperature adjustment, etc. in addition to starting and stopping of lighting devices and air conditioning devices.

  FIG. 3 is a diagram showing a hardware and software configuration of the LED dimming module 50 as an example of a module for controlling a device based on the above-described packets for starting, stopping, and adjusting received from the device control module 45. is there. 3A is a diagram illustrating a configuration example of only the LED dimming module 50, and FIG. 3B is a diagram illustrating a configuration example in which the sensor module 10 and the LED dimming module 50 are integrated.

  Similar to the sensor module 10, the LED dimming module 50 includes an antenna 51, an antenna I / F 52, a wireless module 53, and a microcomputer 54. The LED dimming module 50 further includes an LED 55 and an LED driver 56 that drives the LED 55. The operation of the LED driver 56 is controlled by the microcomputer 54, controls the current of the LED 55, turns on and off, and adjusts the brightness of lighting. The adjustment amount is determined by the control server 11 and received as a packet via the wireless GW 12.

  The integrated unit 57 shown in FIG. 3B can be provided at a low cost because only one module is required and only one microcomputer is used for the module. The module that controls the air conditioner can also be configured to include the same driver, antenna, antenna I / F, wireless module, and microcomputer.

  FIG. 4 is a functional block diagram of the control server 11. The control server 11 can cause the microprocessor 40 to function as a functional unit for realizing each function by causing the microprocessor 40 to read and execute the program stored in the storage 42 into the memory 41. The control server 11 includes at least a storage unit 61, a calculation unit 62, and a transmission unit 63.

  The control server 11 may include only these functional units, but may further include the following functional units. The control server 11 can include a receiving unit 60, an input unit 64, a sensor data processing unit 65, and a device control unit 66.

  The input unit 64 provides a screen menu for inputting control conditions for controlling lighting equipment and air conditioning equipment, and displays the operating state of the system. The control conditions are, for example, the time when the illumination is turned on or off, the time when the operation of the air conditioning equipment is started or stopped, the brightness, the temperature, and the like. The sensor data processing unit 65 processes the environment information (sensor data) received by the receiving unit 60 from each sensor via the wireless GW 12 so that it can be used for device control and operation status display. The device control unit 66 determines how to control the lighting device and the air conditioning device.

  The storage unit 61 includes a control condition storage unit 67 that records and stores how each device is controlled according to attributes such as sensor data, time, and space in the control of the lighting device and the air conditioning device, for example. it can. In addition, the storage unit 61 can include a sensor master storage unit 68 that records and stores detailed information of all the sensors. As detailed information, the number of sensors using the same wireless channel can be cited as an example. The storage unit 61 is a wireless channel master storage that records and stores the communication frequency, data length, communication interval, etc., and communication band values defined by the standard as a wireless communication frequency band and channel as communication conditions for wireless communication. A portion 69 can be included. In general, a human sensor or a temperature / humidity sensor performs wireless communication using a frequency band of 920 MHz as a wireless channel.

  The calculation unit 62 can include a communication band calculation unit 70 that calculates a communication band to be used when a control signal for controlling lighting equipment or air conditioning equipment is transmitted to the control server 11 via the wireless GW 12 under certain conditions. . The calculation unit 62 may include a sensor notification interval calculation unit 71 that calculates a time interval (report interval) for transmitting sensor data of each sensor so as to be within a certain communication band range. The transmission unit 63 transmits the calculated notification interval to each sensor, and requests each sensor to change the notification time. Thereby, each sensor transfers the sensor data to the wireless GW 12 at the set notification interval, and the wireless GW 12 transfers the data to the control server 11.

  Processing performed by the control server 11 will be described with reference to FIGS. 5 and 6. The wireless communication performed by the plurality of sensors and the wireless GW 12 uses a predetermined wireless channel communication band such as the 920 MHz band. Here, it is assumed that only the lighting device is controlled. Therefore, data that needs to be transmitted and received by wireless communication is sensor data transmitted by each sensor and a dimming command that the control server 11 broadcasts simultaneously.

  As shown in FIG. 5, conditions for transmitting each sensor data so that a plurality of sensor data transmitted and received within a certain time and a dimming command are added and the total data amount does not exceed the communication band. Calculate the above notification interval. Incidentally, if the reporting interval is narrow, the amount of data transmitted within a certain time increases, and if the reporting interval is wide, the amount of data transmitted within a certain time decreases. After the calculation, the obtained notification interval is transmitted to each sensor, and a change in the notification time set for each sensor is requested. As a result, it is possible to automatically set conditions that allow normal wireless communication without compressing the communication band. Moreover, since each sensor transmits sensor data at the set notification interval, it can be within the communication band of the wireless channel.

  This process starts from step 600 shown in FIG. 6, and in step 605, the communication band calculation unit 70 receives a channel corresponding to the communication condition of the wireless communication from the wireless channel master storage unit 69, that is, a channel used for wireless communication. Read the value of the communication band. This value is the upper limit value of the communication band of the channel. In addition, the communication band calculation unit 70 reads out the communication frequency and the like defined in the communication standard as communication conditions from the radio channel master storage unit 69. In step 610, the communication band calculation unit 70 reads out the control frequency and the like indicating how often the lighting device is set to be controlled from the control condition storage unit 67. The control condition storage unit 67 can also store and store the number of lighting devices to be controlled, and can read the number of lighting devices by this reading.

  In step 615, the communication band calculation unit 70 calculates a communication band used for controlling the lighting device from the communication condition of the wireless channel to be used, the control frequency, and the number of lighting devices. Here, a communication band used for transmitting a dimming command from the control server 11 to each sensor is calculated.

  In step 620, the sensor notification interval calculation unit 71 reads the number of sensors using the same wireless channel from the sensor master storage unit 68. In step 625, the sensor notification interval calculation unit 71 transmits a total of communication bands used to receive sensor data from all of the sensors using the same wireless channel and a dimming command for controlling the lighting device. Is added to the total communication bandwidth used. Then, the sensor notification interval calculation unit 71 calculates a notification interval at which each sensor transmits sensor data so that the added value does not exceed the value of the communication band of the wireless channel to be used.

  Specifically, each sensor obtains a value obtained by subtracting the total value of the communication bands used for transmission of the dimming command from the value of the communication band of the wireless channel and dividing the remaining communication band by the number of sensors. Calculate the value of the communication bandwidth used to transmit the sensor data. Since the amount of data that each sensor transmits at one time is determined, the calculated communication band value is used to calculate the notification interval of each sensor.

  In step 630, the notification interval calculated for all sensors using the same wireless channel is transmitted by broadcast to request each sensor to change the notification time. Thereby, this process is terminated at step 635.

  In a conventional system that does not have such a function, the above calculation is performed and the calculated notification interval is not set, so the communication band of the wireless channel to be used is exceeded, and wireless communication delays and disconnection abnormalities occur. there's a possibility that. Although it is possible to perform manual adjustment by a professional engineer, the installation cost becomes high, and adjustment by a specialist engineer is required even when the extension is changed after installation, so that the extension change after installation is limited. However, in the present system, since the appropriate notification interval is automatically set, such a problem does not occur, and the extension change can be easily performed.

  In the example illustrated in FIGS. 5 and 6, the same notification interval is set for all of the plurality of sensors in consideration of a communication band used for data transmission / reception between the plurality of sensors and the wireless GW 12. The sensors are not necessarily the same type of sensors, and may include different types of sensors. Then, the frequency with which transmission is required differs depending on the type of sensor, and the requirements differ depending on the application.

  Therefore, the notification interval is calculated in consideration of the type of sensor, and the change of the calculated notification interval is requested according to the type of each sensor.

  FIG. 7 is a diagram showing a table in which sensor types, sensor response requests, and frequency guide values are associated with each other. The type of sensor is classified according to its application, and is a human sensor, illuminance sensor, temperature sensor, humidity sensor, or the like. The reaction request indicates when the sensor data transmission is requested, and the guide value indicates a guide value range (guide range) that is a guideline of the frequency of transmitting the sensor data. Note that the guide value is an example, and is not limited to the range shown in FIG.

  FIG. 8 is a flowchart showing the flow of processing in consideration of the type of sensor. This processing is started from Step 800, and Step 815 is the same as Step 615 shown in FIG. In step 820, the sensor notification interval calculation unit 71 reads out the sensor type from the sensor master storage unit 68 in addition to the number of sensors. For this reason, the sensor master storage unit 68 also stores information on the type of sensor.

  In step 825, the sensor notification interval calculation unit 71 also reads a guide value of the frequency with which sensor data is transmitted from the sensor type master storage unit separately provided in the storage unit 61. Note that the sensor type master storage unit can store the table shown in FIG. In step 830, similar to step 625 shown in FIG. 6, a total of communication bands used to transmit all sensor data of sensors using the same wireless channel and a dimming command for controlling the lighting device are transmitted. In order to prevent the total communication band used for the transmission from exceeding the communication band of the wireless channel to be used, the notification interval transmitted by each sensor is calculated for each sensor type. In step 835, the calculated notification interval is transmitted according to the type of sensor to request a change in the notification time, and in step 840, this process is terminated.

  The notification interval to be transmitted is broadcasted with information on the sensor type. Each sensor acquires a notification interval that matches the sensor type information, and changes the notification interval set for itself to the acquired notification interval. This process is the same in the following examples.

  The guide value shown in FIG. 7 has a range for each sensor, but each sensor is lowered from the upper limit value to the lower limit value of each sensor range so that the communication band of the wireless channel to be used is not exceeded. Can be calculated. At that time, each notification interval can be calculated to have a certain margin and can be requested to change to that value.

  So far, an example in which the same notification interval is set for the sensor and an example in which the notification interval is changed according to the type of sensor have been described. The case where it is necessary to change the notification interval is not limited to the type of sensor, and for example, there is also a type of space for installing the sensor.

  Therefore, the notification interval is calculated in consideration of the type of space, and the calculated notification interval is changed according to the type of each sensor. The type of space will be described with reference to FIG. FIG. 9A is a floor plan on a certain floor such as a building. In this floor plan, there are three meeting rooms, a warehouse, an executive room, a corridor, a lobby, and a living room. The corridor is a space where a person moves toward a target place, and it is necessary to turn on the light according to the movement of the person. For this reason, when a person is detected, the illumination must be turned on immediately. In the lobby, people move at a slower speed than in the corridor, but it is necessary to turn on the lights according to the movement.

  The living room is a space where people sit and work desks, and it is necessary to turn on the lights before they get seated and start working, but the response speed may not be as fast as in the hallway or lobby. Meeting rooms and warehouses only need to operate lighting and air conditioning when used, and the required response may be slow.

  FIG. 9B is a diagram showing a table in which the type of space, the sensor response request, and the frequency guide value are associated with each other. The type of space is the above corridor, lobby, living room, conference room, warehouse, and the like. The response request indicates when the sensor data transmission is requested, and the guide value indicates a guide value that serves as a guide for the frequency of transmission. From the above, the guide value is small in the lobby and the corridor, and the guide value is large in the conference room and the warehouse. Note that the guide value is an example, and is not limited to this range.

  FIG. 10 is a flowchart showing the flow of processing considering the type of space. This processing is started from Step 1000, and Step 1020 is the same as Step 620 shown in FIG. In step 1025, the sensor notification interval calculation unit 71 reads a guide value for each type of space from a space type master storage unit separately provided in the storage unit 61. For this reason, the space type master storage unit stores a table including a guide value of the frequency for each type of space as shown in FIG.

  In step 1030, as in step 625 shown in FIG. 6, the sensor report interval calculation unit 71 calculates the total communication bandwidth used to transmit all sensor data of the sensors using the same wireless channel, and the lighting device. The notification interval of each sensor is calculated for each type of space so that the total communication bandwidth used to transmit the dimming command to be controlled does not exceed the communication bandwidth of the wireless channel used. In step 1035, the transmission unit 63 transmits the notification interval calculated according to the type of space to request the change, and in step 1040, the process ends. The notification interval to be transmitted is broadcasted with information on the type of space.

  The above-described sensor type and space type can be calculated and set by calculating the notification interval in consideration of each individually, but may be calculated and set in consideration of both. By setting the reporting interval calculated in consideration of both for each sensor, it becomes possible to set a larger number of sensors at an appropriate time interval according to the type of space. In the past, engineers had to go to the site and make adjustments to understand the requirements for radio communication expertise and space type. Can be realized.

  FIG. 11 is a diagram illustrating a table in which sensor types, space types, and frequency guide values are associated with each other. The corridor is a space where a person moves toward a destination, and lights are turned on in accordance with the movement of the person. Therefore, the human sensor needs to frequently transmit detection information. However, since temperature and humidity cannot be changed rapidly, it is not necessary to frequently transmit detection information. Since the lobby has a reception and is a space where customers come, the motion sensor needs to transmit detection information frequently. Also, since temperature and humidity need to be finely controlled for the customer, it is necessary to send detection information frequently.

  In the living room, since there are few human sensors and temperature / humidity change factors for turning on the light before the user takes a seat and starts work, detection information may be transmitted at a medium frequency. The conference room is a space that is sometimes used, but since the degree of heat accumulation varies depending on the number of people, it is necessary to finely control the temperature and humidity. For this reason, the detection information from the human sensor may be transmitted slowly, but the detection information from the temperature / humidity sensor needs to be transmitted frequently.

  The type of sensor is a human sensor, an illuminance sensor, a temperature sensor, a humidity sensor, or the like depending on the application. The types of space are corridors, lobbies, living rooms, conference rooms, warehouses, and the like. The guide value indicates a guide value that is a guideline for the frequency of transmitting sensor data. Note that the guide value is an example, and is not limited to the range shown in FIG.

  FIG. 12 is a flowchart showing the flow of processing considering the type of sensor and the type of space. This processing is started from Step 1200, and Step 1215 is the same as Step 615 shown in FIG. In step 1220, the sensor notification interval calculation unit 71 reads the number of sensors and the type of sensor from the sensor master storage unit 68. In step 1225, the sensor notification interval calculation unit 71 reads the guide value of the frequency for each type of sensor and the type of space shown in FIG. 11 from the space type master storage unit. Therefore, the space type master storage unit can store the table shown in FIG. 11 instead of the table shown in FIG.

  In step 1230, as in step 625 shown in FIG. 6, the sensor report interval calculation unit 71 calculates the total communication band used to transmit all sensor data of the sensors using the same wireless channel, and the lighting device. The time interval of each sensor is calculated for each sensor type and each space type so that the total communication band used for transmitting the dimming command to be controlled does not exceed the communication band of the wireless channel to be used. In step 1235, the notification interval calculated according to the type of sensor and the type of space is transmitted to request a change thereof, and in step 1240, the process is terminated.

  Until now, only a plurality of sensors and the wireless GW 12 have used the same wireless channel, but other devices and systems may also use this wireless channel. Examples of other devices and systems include smart taps that use the same 920 MHz band. A smart tap is a device that is connected between an outlet and an electronic device and measures the amount of power consumed by the electronic device, and transmits the measured amount of power to a PC or the like by wireless communication.

  When such other systems use the same radio channel, the communication band overflows with the methods described so far. In this case, since an abnormality occurs, it is necessary to adjust the communication amount including the other systems.

  Therefore, the communication band used by another system is measured in the wireless channel scheduled to be used, and the notification intervals of the plurality of sensors including the measured communication band are calculated and set in each sensor. As a result, even in an environment where the wireless channel must be shared with other systems, it is possible to automatically set conditions that allow proper wireless communication without pressing the communication band.

  FIG. 13 is a flowchart showing the flow of processing considering that other systems use the same radio channel. This processing is started from step 1300, and step 1305 is the same as step 605 shown in FIG. Further, steps after step 1315 are the same as those after step 610 shown in FIG. Only step 1310 has been added. In step 1310, in a wireless channel scheduled to be used, a measurement unit provided separately measures a communication band used by another system. In step 1330, the sensor notification interval calculation unit 71 calculates the notification interval of each sensor using the measured communication band.

  A communication band used by another system may include communication performed between two other devices and communication performed between the other device and the control server 11. The communication band used by other systems can be measured by detecting the rate at which radio waves are emitted from or to other systems using the carrier sense function. . Carrier sense is a function that attempts to communicate again after a certain period of time so as not to transmit a plurality of carriers at the same frequency.

  In the description so far, the notification interval of each sensor is calculated and set to each sensor so as not to exceed the upper limit of the communication band of the wireless channel to be used. However, the calculated notification interval may not be within the guide range of the notification frequency. If the guide range is exceeded, it may be less frequent than necessary, for example, the lighting must be turned on early in the hallway, but it may not be possible to turn it on. In such a case, it is desirable to display an error and be able to immediately notify the administrator so that the administrator can take action.

  FIG. 14 is a flowchart showing a flow of a process for determining whether it is within the guide range and determining whether to set a notification interval or notify an error according to the determination result. Steps 1400 to 1430 are the same as steps 800 to 830 shown in FIG. In step 1435, a separately provided determination unit determines whether the calculation result is within the guide range. If it is within the range, the process proceeds to step 1440, and the transmission unit 63 transmits the calculated report interval to each sensor as in step 835 shown in FIG. 8, and requests each sensor to change the report time. On the other hand, if not within the range, the process proceeds to step 1445, where a separately provided notification unit displays an error indicating that the guide range has been exceeded on the display screen. Then, the notification unit stops the transmission of the notification interval calculated by the sensor notification interval calculation unit 71, and the process ends in step 1450. In this example, the notification unit notifies the administrator by displaying an error. However, the notification is not limited to this, and the error may be notified by outputting an error sound or sound.

  As described above, by adopting the present system, apparatus, and method, it is possible to automatically set conditions for performing wireless communication appropriately without compressing the wireless band for each of a plurality of sensors. . In addition, it is possible to provide responsive device control by changing the conditions under which wireless communication can be performed according to the type of sensor, that is, the notification interval. Similarly, even by changing the notification interval according to the type of space, it is possible to provide device control with good response. Furthermore, by changing the time interval according to both the type of sensor and the type of space, it is possible to provide device control with better response.

  In addition, even in an environment where the same wireless channel as other devices must be used, it can be set automatically, and if the notification interval becomes inappropriate, an error will be notified, so resetting may be performed. It becomes possible.

  Although the present invention has been described with the above-described embodiments as an information processing apparatus, a communication system, a communication control method, and a program, the present invention is not limited to the above-described embodiments. The present invention can be modified within a range that can be conceived by those skilled in the art, such as other embodiments, additions, modifications, and deletions, and the present invention is not limited as long as the operations and effects of the present invention are exhibited in any aspect. It is included in the scope of the invention. Therefore, the present invention can also provide a recording medium on which the program is recorded, an external device that provides the program via a network, and the like.

DESCRIPTION OF SYMBOLS 10 ... Sensor module, 11 ... Control server, 12 ... Wireless GW, 13 ... Wired network, 20 ... Human sensor, 21 ... Temperature / humidity sensor, 22 ... Illuminance sensor, 23 ... Sensor driver, 24 ... Microcomputer, 25 ... Antenna, 26 ... Antenna I / F, 27 ... Wireless module, 30 ... Antenna, 31 ... Wireless module, 32 ... Antenna I / F, 33 ... Microprocessor, 34 ... Memory, 35 ... Wired network module, 40 ... Microprocessor, 41 ... Memory, 42 ... Storage, 43 ... Wired network module, 44 ... Video module, 45 ... Device control module, 50 ... LED dimming module, 51 ... Antenna, 52 ... Antenna I / F, 53 ... Wireless module, 54 ... Microcomputer, 55 ... LED, 56 ... LED driver, 57 ... integrated unit, 60 ... receiver, 61 Storage unit 62 ... Calculation unit 63 ... Transmission unit 64 ... Input unit 65 ... Sensor data processing unit 66 ... Device control unit 67 ... Control condition storage unit 68 ... Sensor master storage unit 69 ... Wireless channel master Storage unit, 70 ... communication band calculation unit, 71 ... sensor report interval calculation unit

Japanese Patent Application No. 2014-191107 Japanese Patent Application No. 2014-191111 Japanese Patent Application No. 2015-058022 JP 2008-301071 A

Claims (20)

An information processing device that controls communication between a plurality of detection devices that detect environmental information about the environment,
A storage unit that stores communication conditions of wireless communication to be used, the number of detection devices that perform communication, and the frequency with which each detection device transmits the environment information;
Based on the communication conditions, the number of the detection devices, and the frequency stored in the storage unit, a calculation unit that calculates a time interval as a condition for the detection devices to transmit the environment information;
An information processing apparatus comprising: a transmission unit that transmits the time intervals calculated by the calculation unit to the detection devices, and requests the detection devices to change the time intervals.   The communication condition is a communication band representing an amount of information that can be transmitted and received by wireless communication within a predetermined time, and the calculation unit calculates the time interval so as not to exceed an upper limit value of the communication band. The information processing apparatus according to 1. The storage unit stores, as the frequency, a first range of different time intervals for transmitting the environment information according to the type of the detection device,
The information processing apparatus according to claim 1, wherein the calculation unit calculates the time interval for each type of the detection device based on the first range corresponding to the type of the detection device. The storage unit stores, as the frequency, a second range of different time intervals for transmitting the environment information according to the type of space in which the plurality of detection devices are installed,
The information processing apparatus according to claim 1, wherein the calculation unit calculates the time interval for each type of space based on the second range corresponding to the type of space. The storage unit stores, as the frequency, a third range of different time intervals for transmitting the environment information according to the type of the detection device and the type of space in which the plurality of detection devices are installed,
The calculation unit calculates the time interval for each type of the detection device and each type of the space based on the third range according to the type of the detection device and the type of the space. 4. The information processing apparatus according to any one of 3. Amount of information that can be transmitted / received by wireless communication within a certain time, which is a communication condition of other devices using the same frequency band as that used by the plurality of detection devices to perform wireless communication with the information processing device Further includes a measurement unit that measures a communication band representing
The calculation unit calculates the time interval based on a communication band obtained by removing the communication band measured by the measurement unit from the communication band of the wireless communication to be used, the number of the detection devices, and the frequency. The information processing apparatus according to any one of 1 to 5.   A determination unit that determines whether the time interval calculated by the calculation unit is within the corresponding first range according to a type of the detection device, and a determination unit that determines that the time interval is not within the first range. The information processing apparatus according to claim 3, further comprising: a notification unit that notifies that the time interval has not been accommodated and stops transmission of the time interval.   According to the type of the space, the time interval calculated by the calculation unit is determined to be within the corresponding second range, and is determined not to be within the determination unit. The information processing apparatus according to claim 4, further comprising: a notification unit that notifies that the time interval has not been received and stops transmission of the time interval.   A determination unit that determines whether the time interval calculated by the calculation unit is within the corresponding third range according to a type of the detection device and a type of the space; and The information processing apparatus according to claim 5, further comprising: a notification unit that notifies that it is not within the range and stops transmission of the time interval when it is determined that the range is not within the range.   A communication system comprising a plurality of detection devices that detect environmental information related to the environment and the information processing device according to any one of claims 1 to 9. A communication control method executed by an information processing device that controls communication with a plurality of detection devices that detect environmental information related to the environment, and the information processing device communicates with communication conditions of wireless communication to be used A storage unit that stores the number of detection devices and the frequency with which each detection device transmits the environmental information;
Calculating a time interval as a condition for each of the detection devices to transmit the environment information based on the communication conditions, the number of the detection devices, and the frequency stored in the storage unit;
Transmitting the calculated time interval to each of the detection devices, and requesting each of the detection devices to change the time interval.   The communication condition is a communication band representing an amount of information that can be transmitted and received by wireless communication within a predetermined time, and in the calculating step, the time interval is calculated so as not to exceed an upper limit value of the communication band. Item 12. The communication control method according to Item 11. The storage unit stores, as the frequency, a first range of different time intervals for transmitting the environment information according to the type of the detection device,
The communication control method according to claim 11 or 12, wherein in the calculating step, the time interval is calculated for each type of the detection device based on the first range corresponding to the type of the detection device. The storage unit stores, as the frequency, a second range of different time intervals for transmitting the environment information according to the type of space in which the plurality of detection devices are installed,
The communication control method according to any one of claims 11 to 13, wherein, in the calculating step, the time interval is calculated for each type of space based on the second range corresponding to the type of space. . The storage unit stores, as the frequency, a third range of different time intervals for transmitting the environment information according to the type of the detection device and the type of space in which the plurality of detection devices are installed,
12. The calculating step calculates the time interval for each type of the detection device and each type of the space based on the third range according to the type of the detection device and the type of the space. The communication control method according to any one of ˜13. Amount of information that can be transmitted / received by wireless communication within a certain time, which is a communication condition of other devices using the same frequency band as that used by the plurality of detection devices to perform wireless communication with the information processing device Further comprising the step of measuring a communication band representing
In the calculating step, the time interval is calculated based on the communication band excluding the communication band measured in the measuring step from the communication band of the wireless communication to be used, the number of the detection devices, and the frequency. The communication control method according to any one of claims 11 to 15.   The step of determining whether the calculated time interval is within the corresponding first range according to the type of the detection device, and when it is determined that the time interval is not within the range, The communication control method according to claim 13, further comprising: notifying and stopping transmission of the time interval.   A step of determining whether the calculated time interval is within the corresponding second range according to the type of the space, and notifying that it is not within the range when it is determined that the time interval is not within the range. The communication control method according to claim 14, further comprising: stopping transmission of the time interval.   Determining whether the calculated time interval falls within the corresponding third range according to the type of the detection device and the type of the space; and The communication control method according to claim 15, further comprising a step of notifying that the time interval is not met and stopping transmission of the time interval.   The program for making a computer perform each step contained in the communication control method of any one of Claims 11-19.