JP6648234B2 - Gas supply control system - Google Patents

Description

  The present invention relates to a gas supply control system.

  Conventionally, for the purpose of gas security, when a vibration value applied to a gas meter installed in a customer to which gas is supplied becomes equal to or greater than a predetermined value, the supply of gas is cut off. I have.

  Patent Literature 1 discloses a gas meter that determines whether or not an earthquake has occurred by comparing a vibration value applied to its own gas meter with a vibration value received from another gas meter whose vibration value has exceeded a predetermined value. Is disclosed. This gas meter shuts off gas supply when it is determined that an earthquake has occurred.

  Patent Literature 2 discloses a governor control device that collectively controls supply of gas to a plurality of customers in a predetermined range of an area. A supply control system that shuts off is disclosed.

JP 2008-139269 A Japanese Patent No. 5335057

  However, only a single piece of security information, such as the vibration value and the magnitude of the earthquake, has the problem that the gas supply is not cut off accurately even when the gas supply should be cut off for gas security. there were.

  The present invention has been made in order to solve the above problems, and compared with a case where it is determined whether or not to shut off the gas supply using only a single piece of security information, the gas supply is accurately performed. It is an object to provide a gas supply control system that can be shut off.

In order to achieve the above object, a gas supply control system according to a first aspect of the present invention includes a governor control device that controls supply of gas to each of a plurality of customers within a predetermined range of an area, and each of the governor control devices indicates a security abnormality. the security information determined to be have a transmission means for transmitting to the governor controller, and includes a plurality of gas meters, each of which have a sensor, wherein the governor controller, each of the plurality of gas meters From, transmitted through the transmitting means, receiving means for receiving security information determined to indicate a security anomaly, indicating a security anomaly for each of the plurality of gas meters received by the receiving means If the number of the gas meters determined by the security information determined to be present is equal to or more than a predetermined ratio of the number of the gas meters in the area, the gas supply is shut off. When determining, based on an output of the sensor, the weighting of the number of the gas meter, and, after performing at least one of the predetermined ratio changes, the determination means makes the determination, the supply of gas by the determination unit And control means for performing control to cut off the supply of gas to the customer in which each of the plurality of gas meters is installed when it is determined that the gas is to be shut off.

In order to achieve the above object, a gas supply control system according to a second aspect of the present invention includes a management device that manages gas supply in each of a plurality of regions for each region, a plurality of management devices provided in each region, and There have a transmitting means for transmitting the security information determined to show the security abnormality to the management apparatus, and a plurality of gas meters, each of which have a sensor, provided in each region, and the local A governor control device that controls the supply of gas to each of the plurality of consumers, and wherein the management device is transmitted from each of the plurality of gas meters, for each of the regions, via the transmission means, Receiving means for receiving security information determined to indicate a security anomaly, and security information determined to indicate a security anomaly for each of the plurality of gas meters received by the receiving means The number of more determined the gas meter is, if the it is a gas meter the number of predetermined proportion or more in the region, when determines to shut off the supply of gas, based on an output of the sensor, the weighting of the number of the gas meter, And, after performing at least one of the change of the predetermined ratio, a determination unit for performing the determination, and when it is determined that the supply of gas is cut off by the determination unit, the governor control device of the region and the plurality of A second transmission unit configured to transmit shutoff instruction information indicating an instruction to shut off gas supply to at least one of the gas meters.

  ADVANTAGE OF THE INVENTION According to this invention, compared with the case where it is determined whether to shut off the gas supply using only a single piece of security information, the gas supply can be shut off with high accuracy.

1 is a schematic diagram illustrating a configuration of a gas supply control system according to a first embodiment. It is a block diagram which shows the principal part structure of the electric system of the gas meter which concerns on each embodiment. It is a flow chart which shows a flow of processing of a gas supply control processing program concerning a 1st embodiment. It is a schematic diagram which shows an example of the state in which the gas meter individually controlled the cutoff of gas supply. FIG. 9 is a schematic diagram illustrating an example of a state in which the gas meter controls the shutoff of gas supply using security information received from another gas meter. It is a schematic diagram which shows an example of the state in which the gas meter individually controlled the cutoff of gas supply. FIG. 9 is a schematic diagram illustrating an example of a state in which the gas meter controls the shutoff of gas supply using security information received from another gas meter. It is a schematic diagram showing a configuration of a gas supply control system according to a second embodiment. FIG. 11 is a block diagram illustrating a main configuration of an electric system of a governor control device according to a second embodiment and a third embodiment. It is a flow chart which shows a flow of processing of a security information transmission processing program concerning a 2nd embodiment and a 3rd embodiment. It is a flow chart which shows a flow of processing of a gas supply control processing program concerning a 2nd embodiment. It is a schematic diagram which shows an example of the state in which the governor control device controlled the shutoff of gas supply based on the security information of only the own device. FIG. 4 is a schematic diagram illustrating an example of a state in which the governor control device controls the shutoff of gas supply using security information received from each gas meter. It is a schematic diagram showing a configuration of a gas supply control system according to a third embodiment. FIG. 13 is a block diagram illustrating a main configuration of an electric system of a management device according to a third embodiment. It is a flow chart which shows a flow of processing of a gas supply control processing program concerning a 3rd embodiment. It is a flow chart which shows a flow of processing of a gas supply management processing program concerning a 3rd embodiment. It is a schematic diagram which shows an example of the state in which the governor control device individually controlled the cutoff of gas supply. It is a schematic diagram which shows an example of the state in which the control of the supply of gas was controlled by the management device using the type information received from the governor control device.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
First, a configuration of a gas supply control system 10A according to the present embodiment will be described with reference to FIG. As shown in FIG. 1, a gas supply control system 10A according to the present embodiment includes gas meters 16A to 16J installed respectively in consumers 14A to 14J in a predetermined range of area 12. In the following, when it is not necessary to distinguish the customers 14A to 14J, the alphabet at the end of the code is omitted. In the following, when it is not necessary to distinguish the gas meters 16A to 16J, alphabets at the end of the reference numerals are omitted.

  The gas meter 16 according to the present embodiment is provided with a shutoff valve 44 (see FIG. 2) so as to be openable and closable, and supplies gas to the customer 14 by opening the shutoff valve 44. The gas meter 16 shuts off the supply of gas to the customer 14 by closing the shutoff valve 44.

  The gas meter 16 can mutually transmit and receive data by wireless communication with the gas meter 16 installed in the adjacent customer 14. Even when direct communication is not possible, the gas meters 16 can mutually transmit and receive data via the gas meter 16 located in the middle of the communication path. For example, the gas meter 16A shown in FIG. 1 can mutually transmit and receive data directly with the gas meters 16B and 16C, and can mutually transmit and receive data with the gas meter 16D via the gas meter 16B. Has become. The communication between the gas meters 16 may be wire communication.

  Next, with reference to FIG. 2, the main configuration of the electric system of the gas meter 16 according to the present embodiment will be described. As shown in FIG. 2, a gas meter 16 according to the present embodiment has a CPU (Central Processing Unit) 30 that controls the overall operation of the gas meter 16 and a ROM (Read Only) in which various programs and various parameters are stored in advance. Memory) 32 is provided. The gas meter 16 includes a RAM (Random Access Memory) 34 used as a work area when the CPU 30 executes various programs, and a non-volatile storage unit 36 such as a flash memory.

  In addition, the gas meter 16 includes a communication line I / F (Interface) unit 38 for transmitting and receiving communication data to and from an external device, and a display unit 40 for notifying a user of various information regarding the operation state of the gas meter 16 and the like. . Further, the gas meter 16 includes an operation unit 42 that receives various instructions from a user, and the above-described shutoff valve 44.

  Further, the gas meter 16 includes an acceleration sensor 46, an ultrasonic sensor 48, a temperature sensor 50, a fire sensor 52, a humidity sensor 54, and a pressure sensor 56 in order to obtain a plurality of types of security information regarding gas security. . The acceleration sensor 46 according to the present embodiment detects three-axis acceleration. Note that the three axes here are, as an example, one axis in the horizontal direction as the X axis, a direction orthogonal to the horizontal X axis as the Y axis, and a vertical direction orthogonal to the X axis and the Y axis as the Z axis. 3 axes. The ultrasonic sensor 48 according to the present embodiment includes a sensor using ultrasonic waves as an example, and when the amount of dust in the gas meter 16 is equal to or more than a predetermined amount, and when water enters the gas meter 16. Each outputs a sensor abnormality signal indicating that the sensor has become abnormal. The ultrasonic sensor 48 is not limited to a sensor using ultrasonic waves, and may be any sensor that can detect that the amount of dust in the gas meter 16 has reached a predetermined amount or more and that water has entered the gas meter 16. Alternatively, a sensor using other than ultrasonic waves may be used.

  The temperature sensor 50 according to the present embodiment detects the temperature of the main body of the gas meter 16 (hereinafter, simply referred to as “main body temperature”), and detects the temperature of the gas supplied to the consumer 14 via the gas meter 16 (hereinafter, referred to as “main body temperature”). , Simply referred to as “gas temperature”). The fire sensor 52 according to the present embodiment is a sensor using infrared rays as an example, and outputs a fire occurrence signal indicating that a fire has occurred when the amount of smoke has exceeded a predetermined amount. The humidity sensor 54 according to the present embodiment detects the humidity inside the gas meter 16. The pressure sensor 56 according to the present embodiment detects the pressure of the gas supplied via the gas meter 16.

  The CPU 30, the ROM 32, the RAM 34, the storage unit 36, the communication line I / F unit 38, the display unit 40, and the operation unit 42 are connected to each other via a bus 58. In addition to these components, components of a shutoff valve 44, an acceleration sensor 46, an ultrasonic sensor 48, a temperature sensor 50, a fire sensor 52, a humidity sensor 54, and a pressure sensor 56 are also connected to each other via a bus 58. .

  With the above configuration, the gas meter 16 according to the present embodiment uses the CPU 30 to access the ROM 32, the RAM 34, and the storage unit 36, and to transmit and receive communication data via the communication line I / F unit 38. The gas meter 16 controls the CPU 30 to display various information on the display unit 40, obtain various data via the operation unit 42, and control the opening and closing of the shutoff valve 44.

  Further, the gas meter 16 uses the CPU 30 to obtain the three-axis acceleration output from the acceleration sensor 46, the sensor abnormality signal output from the ultrasonic sensor 48, and the acquisition of the main body temperature and the gas temperature output from the temperature sensor 50, respectively. Do. In addition, the gas meter 16 uses the CPU 30 to acquire the fire occurrence signal output from the fire sensor 52, the humidity output from the humidity sensor 54, and the pressure output from the pressure sensor 56, respectively.

  Further, the gas meter 16 derives an SI (Spectrum Intensity) value as a value indicating the magnitude of the earthquake by the CPU 30 based on the three-axis acceleration acquired from the acceleration sensor 46. In addition, the gas meter 16 uses the CPU 30 to determine the angle of inclination of the gas meter 16 with respect to the horizontal direction (that is, the angle of inclination of the ground at the position where the gas meter 16 is installed) based on the three-axis acceleration acquired from the acceleration sensor 46. Is derived. Further, the gas meter 16 derives a long-period SI value as a value indicating a long-period vibration based on the triaxial acceleration acquired from the acceleration sensor 46 by the CPU 30.

  Next, the operation of the gas meter 16 according to the present embodiment will be described with reference to FIG. FIG. 3 is a flowchart illustrating a flow of a gas supply control processing program executed by the CPU 30 when the power of the gas meter 16 is turned on, for example. The gas supply control processing program is installed in the ROM 32 in advance.

  In step 100 of FIG. 3, the CPU 30 obtains outputs from the acceleration sensor 46, the ultrasonic sensor 48, the temperature sensor 50, the fire sensor 52, the humidity sensor 54, and the pressure sensor 56, respectively.

  In the next step 102, the CPU 30 determines whether or not at least one of the outputs of the respective sensors obtained in the processing in the above step 100 indicates an abnormality related to gas security (hereinafter, referred to as “security abnormality”). . If this determination is affirmative, the CPU 30 proceeds to the process of step 104. Here, a method for determining whether or not the output from each sensor indicates a security abnormality will be described.

  The CPU 30 derives an SI value based on the three-axis acceleration output from the acceleration sensor 46, and when the derived SI value is equal to or larger than a threshold value V1 (for example, a value corresponding to a seismic intensity 5 or more), the CPU 30 It is determined that the output indicates a security abnormality. Further, the CPU 30 derives the inclination angle based on the triaxial acceleration output from the acceleration sensor 46, and when the derived angle is equal to or larger than the threshold value V2, the output from the acceleration sensor 46 indicates a security abnormality. It is determined that there is. Further, the CPU 30 derives a long-period SI value based on the triaxial acceleration output from the acceleration sensor 46, and when the derived long-period SI value is equal to or larger than the threshold value V3, the output from the acceleration sensor 46 is secured. It is determined that it indicates an abnormality.

  Further, when a sensor abnormality signal is output from the ultrasonic sensor 48, the CPU 30 determines that the output from the ultrasonic sensor 48 indicates a security abnormality. When the main body temperature output from the temperature sensor 50 is equal to or higher than the threshold value V4 (for example, 100 ° C.), the CPU 30 regards that a fire has occurred and determines that the output from the temperature sensor 50 indicates a security abnormality. judge. When the difference between the main body temperature and the gas temperature output from the temperature sensor 50 is equal to or greater than the threshold value V5, the CPU 30 regards that a fire has occurred and the output from the temperature sensor 50 indicates a security abnormality. Is determined.

  When a fire occurrence signal is output from the fire sensor 52, the CPU 30 determines that the output from the fire sensor 52 indicates a security abnormality. When the humidity output from the humidity sensor 54 is equal to or higher than the threshold value V6, the CPU 30 considers that water has entered the gas meter 16 or the gas pipe, and the output from the humidity sensor 54 indicates a security abnormality. It is determined that there is. In addition, when the pressure output from the pressure sensor 56 is out of a predetermined range as a normal value of the gas pressure, the CPU 30 determines that the output from the pressure sensor 56 indicates a security abnormality.

  In step 104, the CPU 30 transmits the security information determined to indicate the security abnormality by the processing in step 102 to all the other gas meters 16 via the communication line I / F unit 38. Specifically, when determining that the output from the acceleration sensor 46 indicates a security abnormality, the CPU 30 transmits the SI value, the inclination angle, and the long-period SI value to another gas meter 16. When determining that the output from the ultrasonic sensor 48 indicates a security abnormality, the CPU 30 transmits sensor abnormality information indicating that a sensor abnormality signal has been output from the ultrasonic sensor 48 to another gas meter 16. .

  When the CPU 30 determines that the output from the temperature sensor 50 indicates a security abnormality, the CPU 30 transmits the main body temperature and the gas temperature acquired from the temperature sensor 50 to another gas meter 16. If the CPU 30 determines that the output from the fire sensor 52 indicates a security abnormality, the CPU 30 transmits fire occurrence information indicating that a fire occurrence signal has been output from the fire sensor 52 to the other gas meters 16. If the CPU 30 determines that the output from the humidity sensor 54 indicates a security abnormality, the CPU 30 transmits the humidity acquired from the humidity sensor 54 to another gas meter 16. When determining that the output from the pressure sensor 56 indicates a security abnormality, the CPU 30 transmits the pressure acquired from the pressure sensor 56 to another gas meter 16.

  On the other hand, if the determination at step 102 is negative, the CPU 30 proceeds to the process at step 106 without executing the process at step 104. In step 106, the CPU 30 receives, via the communication line I / F unit 38, information transmitted from another gas meter 16 determined to have a security abnormality.

  In the next step 108, CPU 30 determines whether or not the timing to end the reception of the information transmitted from another gas meter 16 has come. When the determination is negative, the CPU 30 returns to the process of step 100, and when the determination is affirmative, shifts to the process of step 110. In the present embodiment, as the timing for ending the reception, the timing at which the information transmitted from all the other gas meters 16 is received, and even when the information is not received from all the other gas meters 16, The timing at which a certain period has elapsed since the information was first received from another gas meter 16 is applied.

  In step 110, the CPU 30 transmits the information determined to indicate a security anomaly by the process of step 102 and the other gas meter 16 received by the process of the step 106 to determine that the security anomaly indicates. Based on the information, it is determined whether or not a criterion for determining to shut off the gas supply is satisfied. When the determination is negative, the CPU 30 returns to the process of step 100, and when the determination is affirmative, shifts to the process of step 112. Here, this criterion will be described.

  In the present embodiment, as an example, the CPU 30 determines that the number of gas meters 16 that have detected that the SI value is equal to or greater than the threshold value V1 is equal to or greater than a predetermined ratio (for example, 80%) of the number of all gas meters 16 in the area 12. Then, it is determined that the supply of gas is shut off. The CPU 30 determines that the supply of gas is cut off when the number of the gas meters 16 that have detected that the inclination angle is equal to or greater than the threshold value V2 is equal to or greater than a predetermined ratio of the number of all the gas meters 16 in the area 12. . Further, the CPU 30 determines that the supply of gas is cut off when the number of the gas meters 16 that have detected that the long-period SI value is equal to or more than the threshold value V3 is equal to or more than a predetermined ratio of the number of all the gas meters 16 in the area 12. .

  In addition, the CPU 30 determines that the supply of gas is cut off when the number of gas meters 16 that have detected the sensor abnormality signal is equal to or greater than a predetermined ratio of the number of all gas meters 16 in the area 12. Further, the CPU 30 determines that the supply of gas is cut off when the number of the gas meters 16 that have detected that the main body temperature is equal to or higher than the threshold value V4 is equal to or more than a predetermined ratio of the number of all the gas meters 16 in the area 12. In addition, when the number of the gas meters 16 that have detected that the difference between the main body temperature and the gas temperature is equal to or more than the threshold value V5 is equal to or more than a predetermined ratio of the number of all the gas meters 16 in the area 12, the CPU 30 supplies the gas. Judge to shut off.

  The CPU 30 determines that the supply of gas is cut off when the number of the gas meters 16 that have detected the fire occurrence signal is equal to or more than a predetermined ratio of the number of all the gas meters 16 in the area 12. In addition, the CPU 30 determines that the supply of gas is cut off when the number of the gas meters 16 that have detected that the humidity is equal to or higher than the threshold V6 is equal to or more than a predetermined ratio of the number of all the gas meters 16 in the area 12. Further, the number of gas meters 16 that have detected that the gas pressure is out of the predetermined range of the normal value of the gas pressure is equal to or more than a predetermined ratio of the number of all gas meters 16 in area 12. In this case, it is determined that the supply of gas is cut off.

  Note that the determination method regarding the interruption of the gas supply is not limited to the method described above. For example, weighting may be performed based on the detected value, or the predetermined ratio may be changed. For example, when weighting is performed, the CPU 30 sets a larger weight value as the SI value increases, and makes a determination regarding shutoff of gas supply. Specifically, for example, the CPU 30 counts one as the gas meter 16 that has detected that the SI value is equal to or more than the threshold value V1 and less than a threshold value V7 which is larger than the threshold value V1 (for example, a value corresponding to a seismic intensity of less than 6). . Further, the CPU 30 counts 1.5 as the number of the gas meters 16 that have detected that the SI value is equal to or more than the threshold value V7 and less than the threshold value V8 which is larger than the threshold value V7 (for example, a value corresponding to a seismic intensity of 6 strong). Further, the CPU 30 counts two gas meters 16 that have detected that the SI value is equal to or larger than the threshold value V8. Then, the CPU 30 determines that the supply of gas is cut off when the number of gas meters 16 obtained by performing weighting as described above is equal to or more than a predetermined ratio of the number of all gas meters 16 in the area 12.

  Further, for example, when changing the predetermined ratio, the CPU 30 determines the cutoff of the gas supply by lowering the predetermined ratio as the SI value increases. Specifically, for example, the CPU 30 determines that the number of gas meters 16 that have detected that the SI value is equal to or greater than the threshold value V7 is equal to or greater than a percentage (eg, 60%) lower than the predetermined percentage of the number of all gas meters 16 in the area 12. In some cases, it is determined that the supply of gas is cut off. Further, for example, the CPU 30 determines to shut off the gas supply when there is at least one gas meter 16 that has detected that the SI value is equal to or greater than the value corresponding to the seismic intensity 7.

  The above-described weighting based on the detected value and the change of the predetermined ratio are not limited to the SI value, and similarly, the inclination angle, the long-period SI value, the main body temperature, and the difference between the main body temperature and the gas temperature. Applicable.

  Further, for example, weighting may be performed by the number of times that it is determined that a security abnormality is indicated, or the above-described predetermined ratio may be changed, within a certain period of time by the repetition of steps 100 to 108. For example, the CPU 30 sets a larger weight value as the number of times the fire occurrence signal is detected is larger, and makes a determination regarding the interruption of gas supply. Specifically, for example, the CPU 30 counts one gas meter 16 that has detected the fire occurrence signal once during the certain period. Further, for example, the CPU 30 counts 1.5 as the number of gas meters 16 that have detected the fire occurrence signal a plurality of times (for example, twice or more and less than C1 times (for example, 10 times)) within the fixed period. In addition, for example, the CPU 30 counts two gas meters 16 that have detected the fire occurrence signal one or more times C within the certain period. Then, the CPU 30 determines that the supply of gas is cut off when the number of gas meters 16 obtained by performing weighting as described above is equal to or more than a predetermined ratio of the number of all gas meters 16 in the area 12.

  Further, for example, when changing the predetermined ratio, the CPU 30 determines the cutoff of the gas supply by decreasing the predetermined ratio as the number of times the fire occurrence signal is detected increases. Specifically, for example, the CPU 30 determines that the number of gas meters 16 that have detected that the number of times the fire occurrence signal has been detected is 2 or more and less than C1 is greater than the predetermined ratio of the number of all gas meters 16 in the area 12. If the ratio is equal to or higher than a low ratio (for example, 60%), it is determined that the supply of gas is cut off. In addition, for example, the CPU 30 determines that the supply of gas is cut off when there is at least one gas meter 16 that has detected the fire occurrence signal a number of times C1 or more within the certain period.

  The weighting and the change of the predetermined ratio according to the number of times determined as described above are not limited to the fire occurrence signal, the number of times the sensor abnormality signal is output, and the output from the humidity sensor 54 are determined to indicate a security abnormality. The same can be applied to the number of times and the number of times that the output from the pressure sensor 56 indicates a security abnormality.

  As described above, by changing the weight and the predetermined ratio by the detected value, and by changing the weight and the predetermined ratio by the determined number of times, compared with the case where the determination criterion is determined uniformly, If necessary, the supply of gas can be more accurately shut off.

  In step 112, the CPU 30 shuts off the supply of gas from the gas meter 16 to the customer 14 by closing the shutoff valve 44, and ends the present gas supply control processing program.

  FIGS. 4 and 5 show, as an example, the gas shut-off state in each gas meter 16 when the ultrasonic sensors 48 of the gas meters 16B, 16D, 16F, 16G, 16I, and 16J detect that the sensors have become abnormal. Is shown. FIG. 4 shows a state in which each gas meter 16 individually controls the cutoff of the gas supply using the output from the ultrasonic sensor 48 of its own device. Further, FIG. 5 shows that each gas meter 16 outputs the output from the ultrasonic sensor 48 of another gas meter 16 in the area 12 in addition to the output from the ultrasonic sensor 48 of its own device as in the present embodiment. FIG. 5 shows a state in which the control of shutting off the supply of gas is performed by using the control shown in FIG.

  As shown in FIG. 4, when each gas meter 16 individually controls the cutoff of the gas supply, the gas meters 16B, 16D, 16F, 16G, 16I, and 16J that have detected that the ultrasonic sensor 48 has become abnormal. The supply of gas via is shut off. On the other hand, the supply of gas via the gas meters 16A, 16C, 16E, and 16H, which does not detect that the ultrasonic sensor 48 has become abnormal, is continuously performed.

  On the other hand, as shown in FIG. 5, when each gas meter 16 also uses the output from the ultrasonic sensor 48 of another gas meter 16 in the area 12, the gas meter which does not detect that the ultrasonic sensor 48 has become abnormal Gas supply via 16A, 16C, 16E, 16H is also shut off.

  6 and FIG. 7 show, as an example, the gas cutoff state in each gas meter 16 when the SI value derived from the triaxial acceleration output from the acceleration sensor 46 of the gas meter 16E is less than the threshold value V1. Is shown. 6 and 7 show, as an example, a state in which the SI value derived from the three-axis acceleration output from the acceleration sensor 46 of the gas meter 16 other than the gas meter 16E is equal to or more than the threshold value V1. 6 and 7, as an example, the state where the SI value of the gas meter 16E is a value equivalent to a seismic intensity of less than 5 is shown, and the SI value of the gas meters 16A, 16B and 16I is a value equivalent to a seismic intensity of 5 or more. Is shown.

  6 and 7 show, by way of example, a state in which the SI values of the gas meters 16C, 16D, 16F, 16G, and 16J are values equivalent to a seismic intensity of less than 6, and the SI value of the gas meter 16H is a seismic intensity of 6 This shows a state that is a value equivalent to a strong. FIG. 6 shows a state in which each gas meter 16 individually controls the cutoff of the gas supply using the output from the acceleration sensor 46 of its own device. FIG. 7 shows that each gas meter 16 uses the output from the acceleration sensor 46 of another gas meter 16 in the area 12 in addition to the output from the acceleration sensor 46 of its own device as in the present embodiment. This shows a state in which the cutoff of the gas supply is controlled.

  As shown in FIG. 6, when each gas meter 16 individually controls the shutoff of the gas supply, the gas meter 16 detects that the SI value is equal to or more than the threshold value V1 via the gas meters 16A to 16D and 16F to 16J. The gas supply is shut off. On the other hand, the supply of gas via the gas meter 16E that does not detect that the SI value has become equal to or more than the threshold value V1 is continuously performed.

  On the other hand, as shown in FIG. 7, when each gas meter 16 also uses the output from the acceleration sensor 46 of another gas meter 16 in the area 12, the gas meter that does not detect that the SI value has become equal to or more than the threshold value V1 The supply of gas via 16E is also shut off.

  As described above, according to the present embodiment, it is determined whether or not to shut off the gas supply using a plurality of types of security information. The gas supply can be more accurately shut off as compared with the case of determining whether or not to shut off.

  Further, according to the present embodiment, since the security information of the plurality of gas meters 16 is used, the gas information is taken into consideration in addition to the situation of only the individual gas meters 16 and the situation of other gas meters 16 in the area 12. Supply can be shut off.

[Second embodiment]
First, the configuration of the gas supply control system 10B according to the present embodiment will be described with reference to FIG. Note that components in FIG. 8 having the same functions as those in FIG. 1 are given the same reference numerals as in FIG. 1, and descriptions thereof are omitted. As shown in FIG. 8, the gas supply control system 10B according to the present embodiment includes a governor control device 60 that controls supply of gas to each gas meter 16 collectively.

  The governor control device 60 according to the present embodiment has a governor 76 (see FIG. 9) provided with a shutoff valve 76A (see FIG. 9) so as to be openable and closable. The governor control device 60 supplies gas to each gas meter 16 via the governor 76 by opening the shutoff valve 76A. In addition, the governor control device 60 shuts off the supply of gas to each gas meter 16 via the governor 76 at a time upstream of each gas meter 16 by closing the shutoff valve 76A.

  In addition, the governor control device 60 can mutually transmit and receive data by wireless communication with the gas meter 16 installed at a communicable distance (in the example shown in FIG. 8, the gas meter 16C installed at the closest position). ing. Further, the governor control device 60 can mutually transmit and receive data with the gas meter 16 that cannot directly communicate with the gas meter 16 via the gas meter 16 located in the middle of the communication path. For example, the governor control device 60 can mutually transmit and receive data via the gas meter 16D shown in FIG. 8 via the gas meters 16A to 16C. Note that communication between the governor control device 60 and the gas meter 16 may be wire communication.

  Next, with respect to the gas meter 16 according to the present embodiment, only parts different from the gas meter 16 according to the first embodiment will be described. In the gas meter 16 according to the present embodiment, the CPU 30 performs transmission and reception of communication data via the communication line I / F unit 38 only with the governor control device 60. Further, the gas meter 16 according to the present embodiment performs only the transfer of the communication data when transmitting and receiving the communication data with the governor control device 60 as described above with respect to the communication with the other gas meters 16. Further, the gas meter 16 according to the present embodiment determines whether or not to cut off the gas supply based on the output from each sensor of the device.

  Next, with reference to FIG. 9, a description will be given of a main configuration of an electric system of the governor control device 60 according to the present embodiment. As shown in FIG. 9, the governor control device 60 according to the present embodiment includes a CPU 62 that controls the overall operation of the governor control device 60, and a ROM 64 in which various programs and various parameters are stored in advance. The governor control device 60 includes a RAM 66 used as a work area when the CPU 62 executes various programs, and a non-volatile storage unit 68 such as a flash memory.

  Further, the governor control device 60 includes a communication line I / F unit 70 for transmitting and receiving communication data to and from an external device, and a display unit 72 for notifying the user of various information regarding the operation status of the governor control device 60 and the like. I have. Further, the governor control device 60 includes an operation unit 74 that receives various instructions from a user, and a governor 76 having the above-described shutoff valve 76A. Further, the governor control device 60 includes an acceleration sensor 78 similar to the acceleration sensor 46 according to the first embodiment. The CPU 62, ROM 64, RAM 66, storage unit 68, communication line I / F unit 70, display unit 72, operation unit 74, governor 76, and acceleration sensor 78 are connected to each other via a bus 80.

  With the above configuration, the governor control device 60 according to the present embodiment uses the CPU 62 to access the ROM 64, the RAM 66, and the storage unit 68, and to transmit and receive communication data via the communication line I / F unit 70. The governor control device 60 controls the CPU 62 to display various information on the display unit 72, obtain various data via the operation unit 74, and control the opening and closing of the shutoff valve 76A.

  Further, the governor control device 60 acquires the three-axis acceleration output from the acceleration sensor 78 by the CPU 62. Further, similarly to the gas meter 16 according to the first embodiment, the governor control device 60 determines the SI value and the inclination of the governor control device 60 with respect to the horizontal direction based on the three-axis acceleration acquired from the acceleration sensor 46. An angle and a long-period SI value are respectively derived.

  Next, the operation of the gas supply control system 10B according to the present embodiment will be described with reference to FIGS. FIG. 10 is a flowchart illustrating a flow of a security information transmission processing program executed by the CPU 30 when the power of the gas meter 16 is turned on, for example. The security information transmission processing program is installed in the ROM 32 in advance. Steps in FIG. 10 that execute the same processing as in FIG. 3 are assigned the same step numbers as in FIG. 3, and descriptions thereof are omitted. On the other hand, FIG. 11 is a flowchart showing the flow of a gas supply control processing program executed by the CPU 62 when the power of the governor control device 60 is turned on, for example. The gas supply control processing program is installed in the ROM 64 in advance.

  In step 102A of FIG. 10, the CPU 30 determines that at least one of the outputs of the sensors obtained by the processing of step 100 is secure, similarly to the processing of step 102 of the gas supply control processing program according to the first embodiment. It is determined whether an error is indicated. When the determination is negative, the CPU 30 returns to the process of step 100, and when the determination is affirmative, shifts to the process of step 104A.

  In step 104A, the CPU 30 transmits the security information determined to indicate a security abnormality by the processing in step 102A to the governor control device 60 via the communication line I / F unit 38.

  In step 150 of FIG. 11, the CPU 62 acquires an output from the acceleration sensor 78. In the next step 152, the CPU 62 transmits the information determined by the gas meter 16 in the area 12 to have a security abnormality by the processing of step 104 A of the security information transmission processing program and transmitted via the communication line I / F unit 70. To receive.

  In the next step 154, the CPU 62 determines whether or not the timing to end the reception of the information transmitted from the gas meter 16 has come. When the determination is negative, the CPU 62 returns to the process of step 150, and when the determination is affirmative, the process proceeds to step 156. In the present embodiment, as the timing for ending the reception, the timing at which the information transmitted from all the gas meters 16 in the area 12 is received, and even when the information is not received from all the gas meters 16, The timing at which a certain period has elapsed since the information was first received from the gas meter 16 is applied.

  In step 156, the CPU 62 supplies the gas based on the acceleration acquired in the processing in step 150 and the information transmitted from the gas meter 16 received in the processing in step 152, which is determined to indicate a security abnormality. It is determined whether or not a determination criterion for determining to shut off is satisfied. The determination in step 156 is based on the determination made in step 110 of the gas supply control processing program, based on the SI value derived based on the acceleration obtained in step 150, the inclination angle, And the long-period SI value, so that the detailed description is omitted here. When the determination is negative, the CPU 62 returns to the process of step 150, and when the determination is affirmative, shifts to the process of step 158.

  In step 158, the CPU 62 shuts off the supply of gas from the governor control device 60 to each gas meter 16 by closing the shutoff valve 76A. In the next step 160, the CPU 62 transmits shutoff instruction information indicating an instruction to shut off gas supply to each gas meter 16 via the communication line I / F unit 70, and ends the present gas supply control processing program. . On the other hand, when the gas meter 16 receives the shut-off instruction information and does not shut off the supply of gas to the customer 14, the gas meters 16 perform the same process as in step 112 to Cut off supply.

  12 and 13 show, by way of example, the SI value derived from the three-axis acceleration output from the acceleration sensor 46 of the gas meter 16E, and the SI value derived from the three-axis acceleration output from the acceleration sensor 78 of the governor control device 60. This shows the gas cutoff state when the obtained SI value is less than the threshold value V1. FIGS. 12 and 13 show, by way of example, a state in which the SI value derived from the three-axis acceleration output from the acceleration sensor 46 of the gas meter 16 other than the gas meter 16E is equal to or larger than the threshold value V1.

  12 and 13 show, as an example, a state in which the SI value of the gas meter 16E is a value equivalent to a seismic intensity of less than 5, and the SI value of the gas meters 16A, 16B, 16I is a value equivalent to a seismic intensity of 5 or more. Is shown. 12 and 13, as an example, a state where the SI values of the gas meters 16C, 16D, 16F, 16G, and 16J are values corresponding to a seismic intensity of less than 6, and the SI value of the gas meter 16H is a value of the seismic intensity 6 This shows a state that is a value equivalent to a strong. FIGS. 12 and 13 show, as an example, a state in which the SI value of the governor control device 60 is a value equivalent to a seismic intensity of less than 5.

  FIG. 12 shows a state in which the governor control device 60 controls the cutoff of the gas supply using only the output from the acceleration sensor 78. FIG. 13 shows that, as in the present embodiment, the governor control device 60 uses the output from the acceleration sensor 46 of each gas meter 16 in the area 12 in addition to the output from the acceleration sensor 78 to supply gas. This shows a state in which shutoff control is performed. FIG. 13 shows a state in which the governor control device 60 has transmitted the shutoff instruction information to each gas meter 16.

  As shown in FIG. 12, when the governor control device 60 controls the cutoff of the gas supply using only the output from the acceleration sensor 78, the gas supply from the governor control device 60 to each gas meter 16 is not cut off. .

  On the other hand, as shown in FIG. 13, when the governor control device 60 controls the cutoff of the gas supply using the output from the acceleration sensor 46 of each gas meter 16 in the area 12, The supply of gas to 16 is shut off. Further, since the shutoff instruction information is transmitted from the governor control device 60 to each gas meter 16, the supply of gas via the gas meter 16 </ b> E that does not detect that the SI value has exceeded the threshold V <b> 1 is also shut off.

  As described above, according to the present embodiment, the same effects as those of the first embodiment can be obtained. Further, according to the present embodiment, not only is the supply of gas from governor control device 60 to each gas meter 16 cut off, but also the shutoff instruction information is transmitted from governor control device 60 to each gas meter 16. Thereby, gas leakage is more suppressed as compared with the case where only gas supply from the governor control device 60 to each gas meter 16 is shut off.

  In the present embodiment, in the security information transmission processing program, the respective gas meters 16 also perform the processing of shutting off the gas supply, but the present invention is not limited to this. For example, each gas meter 16 does not perform the process of shutting off the gas supply in the security information transmission process, and supplies the gas only when the shutoff instruction information transmitted in the process of step 160 of the gas supply control process is received. May be blocked. In this case, the processing in step 112 of the security information transmission processing program is not required.

  Further, in the present embodiment, the governor control device 60 transmits the shutoff instruction information to each gas meter 16. However, the present invention is not limited to this, and the governor control device 60 does not transmit the shutoff instruction information to each gas meter 16. You may. In this case, the processing of step 160 of the gas supply control processing program becomes unnecessary.

  Further, in the present embodiment, the gas meter 16 determines whether or not to interrupt the gas supply using only the output from each sensor of the gas meter 16, but is not limited thereto. Also in the present embodiment, similarly to the above-described first embodiment, the gas meter 16 shuts off the gas supply by using information transmitted from another gas meter 16 that has been determined to indicate a security abnormality. It may be determined whether or not this is the case.

  Although not particularly mentioned in the present embodiment, the interruption of the gas supply by the governor control device 60 has a larger influence range than the interruption of the gas supply by each gas meter 16, and therefore, the processing in the step 156 is not performed. May be set to a stricter value (that is, a larger value) than in the first embodiment.

  Further, when the governor control device 60 determines that the disaster is a large-scale disaster, for example, when the SI value of the governor control device 60 is equal to or greater than the value corresponding to the seismic intensity 7, the information transmitted from each gas meter 16 is used. Alternatively, the supply of gas to each gas meter 16 may be shut off.

[Third Embodiment]
First, the configuration of a gas supply control system 10C according to the present embodiment will be described with reference to FIG. Components in FIG. 14 having the same functions as those in FIG. 8 are denoted by the same reference numerals as those in FIG. 8, and description thereof is omitted. As shown in FIG. 14, a gas supply control system 10C according to the present embodiment is provided in a management center (not shown) and controls a plurality of governor control devices 60 installed one by one in a plurality of regions 12A to 12L. And a management device 200 for managing the information. Note that the configurations of the governor control device 60 in each of the regions 12A to 12L and the gas meter 16 installed in the customer 14 are the same as those in the second embodiment, and thus description thereof will be omitted. Further, in order to avoid confusion, in FIG. 14, the illustration of the customers 14 and the gas meters 16 in the areas 12B to 12L is omitted. In the following, when it is not necessary to distinguish the regions 12A to 12L, the alphabet at the end of the code is omitted.

  The management device 200 according to the present embodiment can mutually transmit and receive data with each governor control device 60 by wired communication. The communication between the management device 200 and the governor control device 60 may be wireless communication.

  Next, with respect to the governor control device 60 according to the present embodiment, only the portions different from the governor control device 60 according to the second embodiment will be described. The governor control device 60 according to the present embodiment causes the CPU 62 to transmit and receive communication data via the communication line I / F unit 70 to and from the management device 200 in addition to the gas meter 16.

  Next, with reference to FIG. 15, a configuration of a main part of an electric system of the management device 200 according to the present embodiment will be described. As shown in FIG. 15, the management device 200 according to the present embodiment includes a CPU 202 that controls the overall operation of the management device 200, and a ROM 204 in which various programs and various parameters are stored in advance. The management device 200 includes a RAM 206 used as a work area when the CPU 202 executes various programs, and a non-volatile storage unit 208 such as a flash memory.

  Further, the management device 200 includes a communication line I / F unit 210 for transmitting and receiving communication data to and from an external device, a display unit 212 for notifying a user of various information regarding the operation status of the management device 200, and various types of information from the user. An operation unit 214 for receiving an instruction is provided. The CPU 202, the ROM 204, the RAM 206, the storage unit 208, the communication line I / F unit 210, the display unit 212, and the operation unit 214 are connected to each other via a bus 216.

  With the above configuration, the management device 200 according to the present embodiment causes the CPU 202 to access the ROM 204, the RAM 206, and the storage unit 208, and transmit and receive communication data via the communication line I / F unit 210. Further, the management device 200 causes the CPU 202 to display various information on the display unit 212 and acquire various data via the operation unit 214.

  Next, the operation of the gas supply control system 10C according to the present embodiment will be described with reference to FIGS. FIG. 16 is a flowchart illustrating a flow of a gas supply control processing program executed by the CPU 62 when, for example, the power of the governor control device 60 is turned on. The gas supply control processing program is installed in the ROM 64 in advance. Steps in FIG. 16 that execute the same processing as in FIG. 11 are assigned the same step numbers as in FIG. 11, and descriptions thereof are omitted. On the other hand, FIG. 17 is a flowchart illustrating a flow of a gas supply management processing program executed by the CPU 202 when the power of the management apparatus 200 is turned on, for example. The gas supply management processing program is installed in the ROM 204 in advance. Further, the operation of the gas meter 16 is the same as that of the above-described second embodiment (see FIG. 10), and the description thereof will be omitted.

  In step 162 of FIG. 16, the CPU 62 transmits type information indicating the type of security information determined to cut off the gas supply by the processing of step 156 to the management device 200 via the communication line I / F unit 70. Then, the present gas supply control processing program ends. The CPU 62 also transmits, to the management device 200 via the communication line I / F unit 70, position information indicating the position of the area 12 where the governor control device 60 is installed, in addition to the type information.

  Specifically, for example, the CPU 62 determines that the number of gas meters 16 that have detected that the SI value is equal to or greater than the threshold value V1 in the processing of step 156 is equal to or greater than a predetermined ratio of the number of all gas meters 16 in the area 12. If it is determined that the supply of gas is to be shut off, information indicating that the security abnormality is due to the SI value is transmitted to the management device 200 as the type information.

  Further, for example, when the CPU 62 determines that the supply of gas is cut off when the number of the gas meters 16 that have detected the sensor abnormality signal in the process of the step 156 is equal to or more than a predetermined ratio of the number of all the gas meters 16 in the area 12. Then, information indicating that the security abnormality is due to a sensor abnormality of the ultrasonic sensor 48 is transmitted to the management device 200 as the type information. Similarly, the CPU 62 also determines, based on each information, the information of the inclination angle, the long-period SI value, the main body temperature, the difference between the main body temperature and the gas temperature, the fire occurrence signal, the humidity, and the gas pressure. When it is determined that the supply of the information is interrupted, the type information is transmitted to the management device 200.

  In step 250 of FIG. 17, the CPU 202 receives the type information and the position information transmitted from the governor control device 60 by the process of step 162. In the next step 252, CPU 202 determines whether or not the timing to end the reception of the type information transmitted from governor control device 60 has come. When the determination is negative, the CPU 202 returns to the process of step 250, while when the determination is affirmative, the process proceeds to step 254. Note that, in the present embodiment, the timing at which the reception ends is the timing at which the management device 200 receives information transmitted from all governor control devices 60 to be managed, and the type information from all governor control devices 60. Is not received, the timing at which a certain period has elapsed since the type information was first received from the governor control device 60 is applied.

  In step 254, the CPU 202 uses the type information and the position information received in the process of step 250 to determine, among all the governor control devices 60 to be managed, the governor control device 60 to which the type information has not been transmitted. It is determined whether or not to perform. If this determination is negative, the CPU 202 determines that all governor control devices 60 to be managed have shut off the gas supply, and returns to the process of step 250. On the other hand, if this determination is affirmative, the CPU 202 proceeds to the process of step 256.

  In step 256, the CPU 202 sets any one of the governor control devices 60 that has determined that the type information has not been transmitted in the process of step 254 as a processing target (hereinafter, referred to as a “processing target device”), and the processing target device. It is determined whether or not the type information is transmitted from at least one of the governor control devices 60 installed in the area 12 adjacent to the installed area 12. When this step 256 is performed for the second time or later, the governor control device 60 that has not been processed until then is set as the processing target device.

  The CPU 202 determines whether or not the type information is transmitted from at least one of the governor control devices 60 in the area adjacent to the area 12 where the processing target device is installed. It may be determined whether or not the type information has been transmitted from the control device 60. In addition, the number of governor control devices 60 adjacent to each other as a criterion for determining whether or not the type information has been transmitted may be appropriately determined according to a required determination accuracy or the like. If this determination is affirmative, the CPU 202 proceeds to the process of step 258. If this determination is negative, the CPU 202 proceeds to the process of step 260 without executing the process of step 258.

  In step 258, the CPU 202 transmits shutoff instruction information for instructing the process target device to shut off the gas supply. Upon receiving the cutoff instruction information, the processing target device performs the same processing as in Steps 158 and 160 described above.

  In step 260, the CPU 202 determines whether or not the processing in steps 256 and 258 has been performed on all governor control devices 60 that have determined that the type information has not been transmitted in the processing in step 254. When the determination is negative, the CPU 202 returns to the process of step 256, and when the determination is affirmative, shifts to the process of step 262.

  In step 262, the CPU 202 determines whether or not a predetermined timing has come as a timing to end the present gas supply management processing program. Note that as the end timing, the timing at which the user inputs an instruction to end the execution of the program via the operation unit 214 may be applied. If the determination is negative, the CPU 202 returns to the process of step 250, and if the determination is affirmative, ends the gas supply management processing program.

  18 and 19 show, by way of example, a state in which the governor control devices 60 in the areas 12A, 12D to 12F, 12H, and 12I have determined that a fire has occurred based on information transmitted from each gas meter 16. Is shown. FIG. 18 shows a state in which the governor control device 60 individually controls the cutoff of the gas supply. FIG. 19 shows a state in which the management device 200 determines whether or not to cut off the gas supply based on the type information transmitted from the plurality of governor control devices 60, as in the present embodiment.

  As shown in FIG. 18, when the governor control device 60 individually controls the cutoff of the gas supply, the governor control device 60 in the area 12G does not cut off the gas supply. On the other hand, as shown in FIG. 19, the governor control devices 60 in the areas 12A, 12D to 12F, 12H, and 12I adjacent to the area 12G have determined that a fire has occurred. Then, when the management device 200 determines whether or not to cut off the gas supply based on the type information transmitted from each governor control device 60, the management device 200 determines the governor control device 60 of the area 12G based on the type information. And transmits the shutoff instruction information to the server. Therefore, the supply of gas from the governor control device 60 in the area 12G where it is not determined that a fire has occurred is shut off.

  In FIGS. 18 and 19, a fire has been described as an example, but the invention is not limited to this. For example, when the humidity sensor 54 determines that water has infiltrated the gas meter 16 or the gas pipe (that is, flood damage), the same applies to other cases where the damage area gradually spreads due to a large-scale disaster or the like. .

  As described above, according to the present embodiment, the same effects as those of the first and second embodiments can be obtained. Further, according to the present embodiment, management device 200 determines whether or not to cut off gas supply based on information transmitted from a plurality of governor control devices 60. Thus, the gas supply can be more accurately shut off than when each governor control device 60 individually determines whether to shut off the gas supply.

  In the present embodiment, the management device 200 receives the type information from each governor control device 60, but is not limited thereto. For example, similarly to the governor control device 60 according to the second embodiment, information may be received from all the gas meters 16 installed in the area 12 to be managed by the management device 200. In this case, similarly to the governor control device 60 according to the second embodiment, the management device 200 determines whether or not to cut off the gas supply based on the information received from the gas meter 16 for each region 12. Good.

  Although the embodiments have been described above, the technical scope of the present invention is not limited to the scope described in the above embodiments. Various changes or improvements can be made to each of the above embodiments without departing from the spirit of the invention, and embodiments with such changes or improvements are also included in the technical scope of the present invention.

  In addition, the above embodiments do not limit the invention according to the claims (claims), and all combinations of the features described in the embodiments are essential for solving the invention. Not necessarily. The embodiments described above include inventions at various stages, and various inventions are extracted by combining a plurality of disclosed constituent features. Even if some components are deleted from all the components shown in each embodiment, a configuration from which some of these components are deleted can be extracted as an invention as long as the effect is obtained.

  For example, in each of the above-described embodiments, the case where the supply of gas is cut off when at least one of the plurality of types of security information satisfies the determination criterion has been described, but the present invention is not limited to this. . For example, the gas supply may be cut off when two or more of a plurality of types of security information satisfy the determination criteria. In this case, for example, the SI value, the inclination angle, the long-period SI value, the output from the temperature sensor 50 and the output from the fire sensor 52, the output from the ultrasonic sensor 48 and the output from the humidity sensor 54, etc. An example in which the supply of gas is shut off when a plurality of types of correlated security information satisfy the determination criterion is exemplified.

  In each of the above embodiments, although not particularly mentioned, a mode in which the automatic return of the gas supply is controlled after the supply of the gas is shut off may be adopted. In this case, even if the output from each sensor does not indicate a security abnormality after the gas meter 16 cuts off the gas supply, it is determined that another gas meter 16 indicates a security abnormality and the transmission is performed. In the case where it is determined based on the information thus obtained that the supply of gas is to be interrupted by the same processing as the processing of step 110 of the first embodiment, an example in which control to inhibit automatic return is performed is exemplified.

  Further, for example, even if the output of the acceleration sensor 78 does not indicate a security abnormality after the governor control device 60 shuts off the gas supply, each gas meter 16 determines that the security abnormality is indicated. When it is determined based on the transmitted information that the supply of gas is to be interrupted by the same processing as that in step 156 of the second embodiment, a control for prohibiting automatic return is exemplified.

  Further, in each of the above embodiments, a case has been described in which various programs are installed in the ROM 32, the ROM 64, and the ROM 204 in advance, but the present invention is not limited to this. For example, various programs may be stored in a storage medium such as a CD-ROM (Compact Disk Read Only Memory) or provided, or may be provided via a network.

  Furthermore, in each of the above-described embodiments, a case has been described in which the respective processes of the gas supply control process, the security information transmission process, and the gas supply management process are implemented by a software configuration using a computer by executing a program. However, the present invention is not limited to this. For example, the respective processes may be realized by a hardware configuration or a combination of a hardware configuration and a software configuration.

  In addition, the configurations of the gas supply control system, the gas meter, the governor control device, and the management device (see FIGS. 1, 2, 8, 9, 14, and 15) described in the above embodiments are examples. It is needless to say that unnecessary portions may be deleted or new portions may be added without departing from the gist of the present invention.

  Further, the processing flows of the various programs described in the above embodiments (see FIGS. 3, 10, 11, 16, and 17) are also examples, and are not necessary without departing from the gist of the present invention. Needless to say, a simple step may be deleted, a new step may be added, or the processing order may be changed.

10A, 10B, 10C gas supply control system, 12 area, 14 customer, 16 gas meter, 30, 62, 202 CPU, 38, 70, 210 communication line I / F section, 46, 78 acceleration Sensor, 48: ultrasonic sensor, 50: temperature sensor, 52: fire sensor, 54: humidity sensor, 56: pressure sensor, 60: governor control device, 200: management device

Claims (5)

A governor control device that controls supply of gas to each of a plurality of consumers in a predetermined range of area,
The security information that are each determined to show the security abnormality have a transmission means for transmitting to the governor controller, and a plurality of gas meters, each of which have a sensor,
With
The governor control device,
From each of the plurality of gas meters, received via the transmitting means, receiving means for receiving security information determined to indicate security abnormalities,
When the number of the gas meters determined by the security information determined to indicate a security abnormality for each of the plurality of gas meters received by the receiving means is a predetermined ratio or more of the number of gas meters in the area, When determining to cut off the supply of gas , based on the output of the sensor, weighting the number of the gas meter, and, after performing at least one of the change of the predetermined ratio, determining means for performing the determination,
When it is determined that the supply of gas is cut off by the determination means, control means for performing control to cut off the supply of gas to the customer in which each of the plurality of gas meters is installed,
Gas supply control system equipped with The determining unit further determines whether security information obtained from an output of a sensor included in the own device indicates a security abnormality,
The number of the gas meters determined by the security information determined to indicate a security abnormality for each of the plurality of gas meters received by the receiving means is a predetermined ratio or more of the number of gas meters in the area, and, The gas supply control system according to claim 1, wherein when it is determined that the security information about the own device does not indicate a security abnormality, it is determined that the supply of gas is cut off. Further comprising a management device that manages the supply of gas in each of the plurality of regions for each region,
The governor control device,
A second transmission unit that transmits type information indicating the type of security information determined to shut off gas supply to the management device,
The management device,
A second receiving unit that receives the type information transmitted from the governor control device via the second transmitting unit;
For the governor control device in which the type information is not received by the second receiving means, the second reception is performed by a governor control device provided in an area adjacent to an area in which the governor control device in which the type information is not received is provided. When the type information is received by the means, to the governor control device that has not been received, third transmission means for transmitting shutoff instruction information indicating an instruction to shut off gas supply,
Further comprising
The receiving means further receives the cutoff instruction information transmitted via the third transmitting means,
The said control means further performs control which cuts off supply of gas to the customer where each of a plurality of gas meters is installed, when the cutoff instruction information is received by the receiving means. The gas supply control system according to claim 2. The gas supply control system according to claim 3, wherein the second transmission unit further transmits the shutoff instruction information to each of the plurality of gas meters according to control by the control unit. A management device that manages gas supply in each of the plurality of regions for each region,
Multiple provided in each region, and each have a transmitting means for transmitting the security information determined to show the security abnormality to the management apparatus, and a plurality of gas meters, each of which have a sensor,
A governor control device provided in each region, and controlling supply of gas to each of a plurality of customers in the region,
With
The management device,
For each of the areas, from each of the plurality of gas meters, transmitted through the transmitting means, receiving means for receiving security information determined to indicate a security abnormality,
When the number of the gas meters determined by the security information determined to indicate a security abnormality for each of the plurality of gas meters received by the receiving means is a predetermined ratio or more of the number of gas meters in the area, When determining to cut off the supply of gas , based on the output of the sensor, weighting the number of the gas meter, and, after performing at least one of the change of the predetermined ratio, determining means for performing the determination,
When it is determined that the supply of gas is cut off by the determination unit, at least one of the governor control device and the plurality of gas meters in the area, shut-off instruction information indicating an instruction to shut off gas supply. Second transmitting means for transmitting;
Gas supply control system equipped with