JP2007174279A - Event determination system, sub information transmitting method, program therefor, and monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the occurrence of useless communication traffic by reducing a communication amount. <P>SOLUTION: In this event determination system in which a main information transmitter and a sub information transmitter are connected to an information processor, and a plurality of sub information acquiring devices are connected to the sub information transmitter, the state of each sub information acquiring device connected to the sub information transmitter and a correlation coefficient as to whether the main information transmitter transmits sub information are respectively calculated, and a sub information acquiring device, the correlation coefficient of which is largest is selected as a sub information acquiring device for estimating the state of the main information transmitter. The sub information transmitter transmits sub information obtained from the plurality of sub information acquiring devices when sub information is obtained from the selected sub information acquiring device. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an event determination system, a sub-information transmission method, a program therefor, and a monitoring system for comprehensively determining the above events based on a plurality of pieces of information acquired from predetermined events.

  For example, an information processing device used in a monitoring system acquires image data and reaction results obtained from an information acquisition device such as a monitoring camera and a floor pressure sensor, and performs detection of a person by combining the acquired information. Yes. The information processing apparatus and each information acquisition apparatus are connected to each other via a network, and the data is provided from each information acquisition apparatus to the information processing apparatus via the network. For this reason, if each information acquisition device frequently transmits data, there is a possibility that communication traffic is concentrated and a delay occurs.

  Therefore, a method has been proposed in which the collected information is judged in the conventional information collecting apparatus and the information is transmitted to the information processing apparatus only when necessary (see, for example, Patent Document 1). By doing so, it becomes possible to reduce the communication amount of the line.

JP-A-5-204861

However, in the conventional method, when a plurality of information collection devices are used in combination, it can be determined only for each information collection device whether or not each piece of information is necessary.
The present invention has been made paying attention to the above circumstances, and an object of the present invention is to provide an event determination system and a sub-information transmission method capable of reducing the generation of useless communication traffic by reducing the amount of communication. It is to provide a program and a monitoring system.

  In order to achieve the above object, an event determination system, a sub-information transmission method, and a program thereof according to the present invention capture a main information acquisition device that acquires main information of a predetermined event, and the predetermined event under different conditions. A plurality of sub information acquisition devices that acquire sub information, a main information transmission device that transmits main information obtained by the main information acquisition device, and a sub information transmission that transmits sub information obtained by the plurality of sub information acquisition devices And an information processing apparatus that performs a comprehensive determination of the event based on main information transmitted from the main information transmitting apparatus and sub information transmitted from the sub information transmitting apparatus. Then, the sub information transmission device is configured to obtain a sub information obtained by the plurality of sub information acquisition devices when the sub information is obtained from a predetermined specific sub information acquisition device among the plurality of sub information acquisition devices. Information is transmitted to the information processing apparatus.

  In the above configuration, the information processing apparatus can simultaneously transmit the sub information of the sub information transmitting apparatus obtained when the position information of the specific sub information transmitting apparatus is obtained when comprehensively determining the predetermined event. It becomes like this. Therefore, according to the present invention, the amount of communication can be reduced, and generation of useless communication traffic can be reduced.

The present invention is also characterized by having the following various configurations.
In the first configuration, the sub information transmission device has a correlation between sub information acquired by each of the plurality of sub information acquisition devices and whether or not main information is transmitted by the main information transmission device at the time of acquisition. Based on the information, a device having a high correlation among the plurality of sub information acquisition devices is determined as the specific sub information acquisition device.

  In this way, since a device having a high correlation with the main information acquisition device is selected as the specific sub information acquisition device, when it is estimated that the main information is transmitted from the main information acquisition device, the sub information is interlocked. The sub information is transmitted from the acquisition device. This eliminates the need for the information processing apparatus to transmit an information acquisition request to the sub information transmitting apparatus when main information is received, thereby reducing the occurrence of useless communication.

  According to a second configuration, the sub information transmission device has an occurrence probability of each combination of sub information that can be acquired by the plurality of sub information acquisition devices, and a main information transmission probability of the main information transmission device when the combination occurs. On the basis of the relationship, the specific sub information acquisition device is determined from the plurality of sub information acquisition devices.

  For example, a product of the occurrence probability and the main information transmission probability is obtained, and the specific sub information acquisition device is determined from the plurality of sub information acquisition devices based on the product. Even in this case, the sub information transmitting apparatus transmits the sub information only when the main information is transmitted, and therefore it is possible to reduce useless communication traffic.

  The monitoring system of the present invention also includes an imaging unit that images a monitoring area and outputs image information, and transmits the image information as main information when a change is detected by determining whether the image information has changed. Positions obtained by a main information transmitting device, a plurality of position information acquisition means arranged at different positions in the monitoring area and detecting the presence of a predetermined object at each position, and the plurality of position information acquisition means A sub information transmission device that transmits information as sub information; and an information processing device that comprehensively determines the presence of a predetermined object in the monitoring area based on the main information and the sub information. The sub-information transmission device transmits the position information obtained by the plurality of position information acquisition means to the information processing device as sub-information when the position information is obtained from a predetermined specific position information acquisition device. It is characterized by transmitting.

  With this configuration, when the information processing device comprehensively determines the presence of the predetermined target in the monitoring area and the position information of the specific sub information transmission device is obtained, the other sub information is obtained. Since the position information of the information transmitting apparatus can be transmitted at the same time, the communication amount can be reduced.

  In short, according to the present invention, an event determination system, a sub information transmission method, and a program thereof that can reduce generation of useless communication traffic by reducing the amount of communication by transmitting information only when necessary. And can provide a monitoring system.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(First embodiment)
In a first embodiment of the present invention, in a system in which a main information transmission device and a sub information transmission device are connected to an information processing device, and a plurality of sub information acquisition devices are connected to the sub information transmission device, The state of each sub information acquisition device connected to the transmission device and the correlation coefficient of whether or not the main information transmission device transmits information are respectively calculated, and the sub information acquisition device having the largest correlation coefficient is selected as the main information acquisition device. The state of the information transmission device is estimated.

FIG. 1 is a block diagram showing an embodiment of an event determination system according to the first embodiment of the present invention.
This event determination system is a system that detects a person existing in a monitoring area, and includes an information processing apparatus 100, a main information transmission apparatus 10, and a sub information transmission apparatus 20. The information processing apparatus 100, the main information transmission apparatus 10, and the sub information transmission apparatus 20 are connected to each other via a network. The information processing apparatus 100 is configured by a computer including a central processing unit (CPU) such as a microprocessor, for example.

  A camera 11 is connected to the main information transmission device 10 as a main information acquisition device, and a captured image of a monitoring area by the camera 11 is periodically sent to the main information transmission device 10. The main information transmitting device 10 takes the difference between the current image input from the camera 11 and the immediately preceding image stored in the main information transmitting device 10, and if this difference is greater than or equal to the threshold, the input image It transmits to the information processing apparatus 100.

  On the other hand, a plurality of floor pressure sensors 21, 22, and 23 are connected to the sub information transmission device 20 as sub information acquisition devices. The floor pressure sensors 21, 22, and 23 are installed at different points in the monitoring area, and detect the pressure value at each point. Then, it is determined whether or not the detected pressure value exceeds a predetermined threshold value for detecting a person, and each reaction state (presence / absence of person detection reaction) is transmitted to the sub information transmitting device 20. . The sub information transmission device 20 transmits to the information processing device 100 position information indicating a position where it is detected that a person is present from the reaction state input from the floor pressure sensors 21, 22, and 23.

The information processing apparatus 100 combines the captured image transmitted from the main information transmitting apparatus 10 with the person detection position based on the signals acquired from the floor pressure sensors 21, 22, and 23 transmitted from the sub information transmitting apparatus 20, Process to identify the person.
Next, the operation of the monitoring system configured as described above will be described. FIG. 2 is a flowchart showing an operation procedure and details of the operation of the sub information transmitting apparatus 20.
First, prior to this, as a preparation stage, the sub information transmission device 20 is set to always transmit information. By operating this system, the information processing apparatus 100 stores the presence / absence of the reaction of the camera 11 and the presence / absence of the reaction of the bed pressure sensors 21, 22, and 23.

  Then, after a certain period of time has elapsed, the system is temporarily stopped, and the states of the main information transmission device 10 and the states of the sub information acquisition devices 21, 22, and 23 connected to the sub information transmission device 20 are enumerated to transmit the main information. Correlation coefficients between the state of the device 10 and the sub information acquisition devices 21, 22, and 23 are obtained (step S2a). This is shown in FIG.

Next, based on the obtained correlation coefficient, the sub information acquisition device with the highest correlation is selected from the sub information acquisition devices 21, 22, and 23 (step S2b). According to FIG. 3, it is assumed here that the sub information acquisition device 22 is selected and the state of the sub information acquisition device 22 is estimated as the state of the main information transmission device 10. Then, the information processing apparatus 100 notifies the sub information transmission apparatus 20 of the selected sub information acquisition apparatus 22. The sub information transmission device 20 determines whether or not the selected information acquisition device 22 is reacting in step S2b (step S2c). In this determination, when it is determined that the information acquisition device 22 is reacting, the sub information transmission device 20 transmits the reaction information of the sub information acquisition devices 21, 22, and 23 to the information processing device 100 (step S2d). ).

  As described above, in the first embodiment, the main information transmitting apparatus 10 and the sub information transmitting apparatus 20 are connected to the information processing apparatus 100, and the sub information transmitting apparatus 20 includes a plurality of sub information acquiring apparatuses 21 and 22. , 23 in the system to which the sub information acquisition device 20 is connected and the state of each of the sub information acquisition devices 21, 22, 23 connected to the sub information transmission device 20, and whether or not the main information transmission device 10 transmits information Each of the numbers is calculated, and the sub information acquisition apparatus having the largest correlation coefficient is selected as the one that estimates the state of the main information transmission apparatus 10. Then, the sub information transmission device 20 transmits the sub information obtained from the plurality of sub information acquisition devices 21, 22, and 23 when the sub information is obtained from the selected sub information acquisition device.

  In this way, when it is estimated that the main information transmitting apparatus 10 is transmitting information, the sub information transmitting apparatus 20 transmits sub information in conjunction with the main information transmitting apparatus 10, The processing apparatus 100 does not need to transmit an information acquisition request to the sub information transmitting apparatus 20 when receiving the main information. As a result, the amount of communication can be reduced, and generation of useless communication traffic can be reduced.

(Second Embodiment)
According to a second embodiment of the present invention, in a system in which a main information transmission device and a sub information transmission device are connected to an information processing device, and a plurality of sub information acquisition devices are connected to the sub information transmission device, the sub information The state of each sub information acquisition device connected to the transmission device and the correlation coefficient of whether or not the main information transmission device transmits information are respectively calculated, and the sub information acquisition device having the largest correlation coefficient is selected as the main information acquisition device. The state of the information transmission device is estimated.

FIG. 4 is a flowchart showing the operation procedure and contents of the sub information transmitting apparatus 20. Since the configuration of this monitoring system is the same as that of the first embodiment, the description will be made with reference to the block configuration diagram shown in FIG.
First, as a preparation stage, the sub information transmission device 20 is set to always transmit information. By operating this system, the information processing apparatus 100 stores the presence / absence of the reaction of the camera 11 and the presence / absence of the reaction of the floor pressure sensors 21, 22, and 23. When the predetermined time has elapsed, the system is temporarily stopped, and combinations of presence / absence of reactions of the bed pressure sensors 21, 22, and 23 are listed (step S4a), and the probability of occurrence of the combination is obtained (step S4b). In each combination, the probability that the main information transmitting apparatus 10 has not transmitted the image of the camera 11 is obtained (step S4c). Further, a product of “probability of occurrence” and “probability of not transmitting” is calculated for each combination (step S4d). The values obtained in this way are shown in FIG.

  Here, consider the case of the state of the first row (no reaction, no reaction, no reaction) and the second row (no reaction, no reaction, reaction) in the table of FIG. In the case of the state of the first row, if the sub information transmission device 20 transmits the information of the floor pressure sensors 21, 22, and 23, 30% of the information is wasted traffic because the main information transmission device 10 has not reacted. It is thought that it becomes. In the case of the state of the second row, the probability that the information transmitting apparatus 10 did not react is 15%. In order to reduce useless traffic, the sub-information transmission device 20 transmits information when a combination of the states of the bed pressure sensors 21, 22, and 23 occurs with a high probability that the main information transmission device 10 has not reacted. Do not do that.

  Therefore, as shown in FIG. 6, this table is sorted in ascending order by “probability of not transmitting” (step S4e). Then, the sub information transmission device 20 input by the user receives an allowable value for transmitting information (step S4f). Here, the allowable value is the upper limit of the probability that the sub information transmitting apparatus 20 will generate useless traffic. The probability that the sub information transmission device 20 generates useless traffic is the sum of “occurrence probability” × “probability of not transmitting”. Therefore, from the top of the table of FIG. 6, each row is selected until the cumulative value of “probability of occurrence” × “probability of not transmitting” reaches an allowable value, and the sub information is transmitted when the combination of the selected states is obtained. The apparatus 20 determines that the information of the floor pressure sensors 21, 22, and 23 is to be transmitted (step S4g).

  Here, when the user instructs the allowable value to be 5.75%, for example, the first to third rows are selected from the table of FIG. The information transmission device 20 transmits the information of the floor pressure sensors 21, 22, and 23. The information processing apparatus 100 notifies the sub information transmission apparatus 20 of the selected combination of states.

  When the preparation is completed, the main information transmitting apparatus 10 processes the image input from the camera 11 in, for example, 20 milliseconds. When the background difference is equal to or greater than the threshold, the main information transmitting apparatus 10 takes, for example, 10 milliseconds to the information processing apparatus 100. Send an image. When the sub information transmission device 20 acquires information from the bed pressure sensors 21, 22, and 23 (step S4h), the sub information transmission device 20 determines, for example, in 1 millisecond whether the input reaction result corresponds to the selected state (step 1). S4i) If it is in the selected combination state, the sensor data is transmitted to the information processing apparatus 100 (step S4j). When the information of the image and the floor pressure sensor is gathered, the information processing apparatus 100 identifies the position of the person from the information of the floor pressure sensor, and executes personal identification processing on the image area corresponding to the position.

  Therefore, in the second embodiment, the product of the occurrence probability and the main information transmission probability is obtained, and the specific sub-information acquisition from the plurality of sub-information acquisition devices 21, 22, 23 based on the product. Try to determine the device. Even in this case, the sub information transmitting device 20 transmits the sub information only when the main information is transmitted, and therefore it is possible to reduce useless communication traffic.

  The present invention is not limited to the above embodiments. For example, in each of the above embodiments, the floor pressure sensor is used as the sub information acquisition device, but an infrared sensor or a temperature sensor can also be applied, and the type and number are not limited. The configuration and operation procedure of the event determination system described in the above embodiments and the contents thereof can be variously modified without departing from the gist of the present invention.

  In short, the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be deleted from all the components shown in each embodiment. Furthermore, you may combine suitably the component covering different embodiment.

The block block diagram which shows one Embodiment of the event determination system concerning 1st Embodiment of this invention. The flowchart which shows the operation | movement procedure of the event determination system shown in FIG. 1, and its content. The figure which shows the correlation coefficient of the state of a sub information acquisition apparatus, and the state of a main information transmission apparatus. The flowchart which shows the operation | movement procedure of the event determination system concerning the 2nd Embodiment of this invention, and its content. The figure which shows the relationship between the combination of the state of a sub information acquisition apparatus, and the state of a main information transmission apparatus. The figure which shows the relationship between the combination of the state of a sub information acquisition apparatus, and the state of a main information transmission apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Information processing apparatus, 10 ... Main information transmission apparatus, 11 ... Main information acquisition apparatus (camera), 20 ... Sub information transmission apparatus, 21, 22, 23 ... Sub information acquisition apparatus (floor pressure sensor).

Claims (10)

A main information acquisition device for acquiring main information of a predetermined event;
A plurality of sub information acquisition devices for acquiring sub information obtained by capturing the predetermined event under different conditions;
A main information transmission device for transmitting main information obtained by the main information acquisition device;
A sub information transmitting device for transmitting sub information obtained by the plurality of sub information acquiring devices;
An information processing device that performs a comprehensive determination of the event based on main information transmitted from the main information transmitting device and sub information transmitted from the sub information transmitting device;
The sub-information transmission device receives sub-information obtained by the plurality of sub-information acquisition devices when the sub-information is obtained from a predetermined sub-information acquisition device among the plurality of sub-information acquisition devices. An event determination system that transmits to the information processing apparatus. The sub information transmitting device is:
Correlation from among the plurality of sub information acquisition devices based on the correlation between the sub information acquired by each of the plurality of sub information acquisition devices and whether or not the main information is transmitted by the main information transmission device at the time of acquisition. The event determination system according to claim 1, wherein a device having a higher value is determined as the specific sub-information acquisition device. The sub information transmitting device is:
The plurality of sub information acquisition devices based on the relationship between the occurrence probability of each combination of sub information that can be acquired by the plurality of sub information acquisition devices and the main information transmission probability of the main information transmission device when the combination occurs The event determination system according to claim 1, wherein the specific sub-information acquisition device is determined from the list. A main information acquisition device for acquiring main information of a predetermined event, a plurality of sub information acquisition devices for acquiring sub information obtained by capturing the predetermined event under different conditions, and main information obtained by the main information acquisition device A main information transmitting apparatus for transmitting, a sub information transmitting apparatus for transmitting sub information obtained by the plurality of sub information acquiring apparatuses, a main information transmitted from the main information transmitting apparatus, and a sub information transmitting apparatus. Used in the sub information transmission device of the event determination system comprising an information processing device that performs a comprehensive determination of the event based on the sub information,
A determination step of determining that the sub information is obtained from a predetermined specific sub information acquisition device among the plurality of sub information acquisition devices;
A transmission step of transmitting the sub information obtained by the plurality of sub information acquisition devices to the information processing device when it is determined that the sub information is obtained from the specific sub information acquisition device. A sub-information transmission method as a feature.   The sub information acquisition device is identified based on a correlation between the sub information acquired by each of the plurality of sub information acquisition devices and whether or not main information is transmitted by the main information transmission device at the time of each acquisition. 5. The sub information transmission method according to claim 4, wherein one having a high correlation is selected from the sub information acquisition apparatuses.   The identification of the sub information acquisition device is based on the relationship between the occurrence probability of each combination of sub information that can be acquired by the plurality of sub information acquisition devices and the main information transmission probability of the main information transmission device when the combination occurs. 5. The sub information transmission method according to claim 4, wherein the specific sub information acquisition device is determined from the plurality of sub information acquisition devices. A main information acquisition device for acquiring main information of a predetermined event, a plurality of sub information acquisition devices for acquiring sub information obtained by capturing the predetermined event under different conditions, and main information obtained by the main information acquisition device A main information transmitting apparatus for transmitting, a sub information transmitting apparatus for transmitting sub information obtained by the plurality of sub information acquiring apparatuses, a main information transmitted from the main information transmitting apparatus, and a sub information transmitting apparatus. In an event determination system including an information processing device that performs a comprehensive determination of the event based on sub information, a program used in the sub information transmission device including a computer,
A determination process for determining that the sub information is obtained from a predetermined specific sub information acquisition device among the plurality of sub information acquisition devices;
When it is determined that the sub information has been obtained from the specific sub information acquisition device, a transmission process for transmitting the sub information obtained by the plurality of sub information acquisition devices to the information processing device is executed on the computer. A program characterized by letting   The identification of the sub information acquisition device in the determination process is based on a correlation between the sub information acquired by each of the plurality of sub information acquisition devices and whether the main information is transmitted by the main information transmission device at the time of each acquisition. 8. The program according to claim 7, wherein a highly correlated device is selected from the plurality of sub information acquisition devices based on the information.   The identification of the sub information acquisition device in the determination process includes the occurrence probability of each combination of sub information that can be acquired by the plurality of sub information acquisition devices, and the main information transmission probability of the main information transmission device when the combination occurs. The program according to claim 7, wherein the specific sub information acquisition device is determined from the plurality of sub information acquisition devices based on the relationship. Imaging means for imaging a monitoring area and outputting image information;
A main information transmitting device that determines whether or not there is a change in the image information and transmits the image information as main information when a change is detected;
A plurality of position information acquisition means arranged at different positions in the monitoring area to detect the presence of a predetermined object at each position;
A sub information transmitting device that transmits the position information obtained by the plurality of position information acquiring means as sub information;
An information processing apparatus that comprehensively determines the presence of a predetermined object in the monitoring area based on the main information and the sub-information,
When the position information is obtained from a predetermined specific position information acquisition apparatus, the sub information transmission apparatus transmits the position information obtained by the plurality of position information acquisition means to the information processing apparatus as sub information. A monitoring system characterized by that.

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