JP2016176665A - Gas supply control device, gas supply control system and control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas supply control device, a gas supply control system and a control method capable of shutting off gas supply with good accuracy compared to the case where whether or not to shut off the gas supply is determined by using only a single piece of security information.SOLUTION: A gas supply control device includes: receiving means for receiving a plurality of types of security information regarding security of a gas transmitted from a plurality of gas meters 16 installed at each of a plurality of users 14 in a district 12; determination means for determining that there is abnormality in the gas security, in the case where at least one type of security information out of the plurality of types of security information received by the receiving means satisfies a predetermined criterion; and control means for, in the case where it is determined that there is abnormality by the determination means, performing control for shutting off the gas supply to the user 14 at which the gas meter 16 is installed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a gas supply control device, a gas supply control system, and a control method.

  Conventionally, for the sake of gas security, when the vibration value applied to the gas meter installed in the consumer to which the gas is supplied exceeds a predetermined value, the gas supply is cut off. Yes.

  Patent Document 1 discloses a gas meter that determines whether 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 is equal to or greater than a predetermined value. Is disclosed. This gas meter shuts off the gas supply when it is determined that an earthquake has occurred.

  In Patent Document 2, in a governor control device that collectively controls the supply of gas to a plurality of consumers in an area within a predetermined range, gas supply is performed when an earthquake having a scale greater than or equal to a predetermined value is detected. A supply control system that shuts off is disclosed.

JP 2008-139269 A Japanese Patent No. 5335057

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

  The present invention has been made in order to solve the above-described problems. Compared to the 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 can be performed with high accuracy. It is an object of the present invention to provide a gas supply control device, a gas supply control system, and a control method that can be shut off.

  In order to achieve the above object, a gas supply control device according to a first aspect of the present invention provides a plurality of types of security related to security of gases transmitted from a plurality of gas meters installed in a plurality of consumers in a predetermined area. It is determined that there is an abnormality in gas security when receiving means for receiving security information and at least one type of security information of a plurality of types of security information received by the receiving means satisfies a predetermined criterion. And a control unit that performs control for shutting off the supply of gas to the consumer in which the gas meter is installed when it is determined by the determination unit that there is an abnormality.

  In order to achieve the above object, a gas supply control system according to a second aspect of the present invention includes the gas supply control device and a transmission unit that transmits the plurality of types of security information of the device itself to another gas meter. A plurality of gas meters, and the determination means includes at least one type of security information of the device itself and at least one type of security information transmitted from the other gas meter and received by the reception means. When the vehicle satisfies the determination criteria, it is determined that there is an abnormality in gas safety, and when the control means determines that there is an abnormality, the consumer in which the device is installed Control to shut off the gas supply to

  In order to achieve the above object, a gas supply control system according to a third aspect of the present invention includes the gas supply control device, and controls a gas supply to a plurality of consumers in the area, A plurality of gas meters having transmission means for transmitting the plurality of types of security information of the own apparatus to the governor control device, and the determination means is transmitted from the plurality of gas meters and received by the reception means When at least one type of safety information of a plurality of types of safety information satisfies the determination criteria, it is determined that there is an abnormality in gas safety, and the control means determines that there is an abnormality by the determination means In addition, control for shutting off the supply of gas to the plurality of gas meters is performed.

  In order to achieve the above object, a gas supply control system according to a fourth aspect of the present invention includes the above-described gas supply control device, and transmission means for transmitting cutoff instruction information indicating an instruction to shut off the supply of gas. A plurality of gas meters having a management device for managing the gas supply in the region for each region, and a second transmission means provided in each region and transmitting the plurality of types of security information of the device to the management device And a governor control device that is provided in each region and controls the supply of gas to a plurality of consumers in the region, and the determination means is transmitted from the plurality of gas meters for each region and received When at least one type of security information of the plurality of types of security information received by the means satisfies the determination criteria, it is determined that there is an abnormality in gas security, and the control means Control for transmitting the shut-off instruction information by the transmission means to at least one of the governor control device and the plurality of gas meters in the area determined to have an abnormality when it is determined that there is an abnormality. I do.

  In order to achieve the above object, a control method for a gas supply control device according to a fifth aspect of the present invention is a method for controlling the amount of gas transmitted from a plurality of gas meters installed in each of a plurality of consumers in a predetermined area. Receiving a plurality of types of security information related to security, and determining that there is an abnormality in the security of the gas when at least one type of security information of the received plurality of types of security information satisfies a predetermined criterion; When it is determined that there is an abnormality in gas security, control is performed to cut off the supply of gas to the consumer where the gas meter is installed.

  According to the present invention, it is possible to cut off the gas supply more accurately than when determining whether to cut off the gas supply using only a single piece of security information.

It is a schematic diagram which shows the structure of the gas supply control system which concerns on 1st 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 flowchart which shows the flow of a process of the gas supply control processing program which concerns on 1st Embodiment. It is a schematic diagram which shows an example of the state which the gas meter performed control of interruption | blocking of supply of gas individually. It is a schematic diagram which shows an example of the state which performed control of interruption | blocking of gas supply also using the security information which the gas meter received from the other gas meter. It is a schematic diagram which shows an example of the state which the gas meter performed control of interruption | blocking of supply of gas individually. It is a schematic diagram which shows an example of the state which performed control of interruption | blocking of gas supply also using the security information which the gas meter received from the other gas meter. It is a schematic diagram which shows the structure of the gas supply control system which concerns on 2nd Embodiment. It is a block diagram which shows the principal part structure of the electric system of the governor control apparatus which concerns on 2nd Embodiment and 3rd Embodiment. It is a flowchart which shows the flow of a process of the security information transmission process program which concerns on 2nd Embodiment and 3rd Embodiment. It is a flowchart which shows the flow of a process of the gas supply control processing program which concerns on 2nd Embodiment. It is a schematic diagram which shows an example of the state which the governor control apparatus performed control of interruption | blocking of supply of gas based on the security information only of an own apparatus. It is a schematic diagram which shows an example of the state which performed control of interruption | blocking of gas supply also using the security information which the governor control apparatus received from each gas meter. It is a schematic diagram which shows the structure of the gas supply control system which concerns on 3rd Embodiment. It is a block diagram which shows the principal part structure of the electric system of the management apparatus which concerns on 3rd Embodiment. It is a flowchart which shows the flow of a process of the gas supply control processing program which concerns on 3rd Embodiment. It is a flowchart which shows the flow of a process of the gas supply management process program which concerns on 3rd Embodiment. It is a mimetic diagram showing an example of the state where the governor control device performed control of interception of gas supply individually. It is a schematic diagram which shows an example of the state which performed control of interruption | blocking of gas supply using the type information which the management apparatus received from the governor control apparatus.

  DETAILED DESCRIPTION Hereinafter, exemplary embodiments for carrying out the present invention will be described in detail with reference to the drawings.

[First Embodiment]
First, the 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, the gas supply control system 10A according to the present embodiment includes gas meters 16A to 16J that are installed one by one in each of the consumers 14A to 14J in an area 12 within a predetermined range. In addition, below, when it is not necessary to distinguish the consumers 14A-14J, the alphabet of the code | symbol end is abbreviate | omitted. Moreover, below, when it is not necessary to distinguish gas meter 16A-16J, the alphabet of the code | symbol end is abbreviate | omitted.

  The gas meter 16 according to the present embodiment is provided with a shut-off valve 44 (see FIG. 2) that can be opened and closed, and supplies gas to the customer 14 by opening the shut-off valve 44. The gas meter 16 shuts off the gas supply to the consumer 14 by closing the shutoff valve 44.

  Further, the gas meter 16 can mutually transmit and receive data by wireless communication with the gas meter 16 installed in the adjacent consumer 14. Moreover, even when each gas meter 16 cannot communicate directly, data transmission / reception is mutually possible via the gas meter 16 located in the middle of a communication path. For example, the gas meter 16A shown in FIG. 1 can directly exchange data with the gas meters 16B and 16C, and can mutually exchange data with the gas meter 16D via the gas meter 16B. It has become. The communication between the gas meters 16 may be wired communication.

  Next, with reference to FIG. 2, the principal part structure of the electric system of the gas meter 16 which concerns on this Embodiment is demonstrated. As shown in FIG. 2, the gas meter 16 according to the present embodiment includes 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, various parameters, and the like are stored in advance. Memory) 32 is provided. Further, 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 nonvolatile storage unit 36 such as a flash memory.

  In addition, the gas meter 16 includes a communication line I / F (Interface) unit 38 that transmits and receives communication data to and from an external device, and a display unit 40 that notifies the user of various types of information regarding the operating status of the gas meter 16. . In addition, the gas meter 16 includes an operation unit 42 that receives various instructions from the user and the shut-off valve 44 described above.

  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 acquire a plurality of types of safety information related to gas security. . The acceleration sensor 46 according to the present embodiment detects triaxial acceleration. The three axes here are, for example, one horizontal direction as the X axis, the direction perpendicular to the horizontal X axis as the Y axis, and the vertical direction perpendicular 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 exceeds a predetermined amount and when water enters the gas meter 16. A sensor abnormality signal indicating that the sensor has become abnormal is output. The ultrasonic sensor 48 is not limited to a sensor using ultrasonic waves, but can detect that the amount of dust in the gas meter 16 has reached a predetermined amount and that water has entered the gas meter 16. 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 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, for example, a sensor using infrared rays, and outputs a fire occurrence signal indicating that a fire has occurred when the amount of smoke exceeds a predetermined amount. The humidity sensor 54 according to the present embodiment detects the humidity in 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, ROM 32, RAM 34, storage unit 36, communication line I / F unit 38, display unit 40, and operation unit 42 are connected to each other via a bus 58. In addition to these parts, the shut-off valve 44, acceleration sensor 46, ultrasonic sensor 48, temperature sensor 50, fire sensor 52, humidity sensor 54, and 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 performs access to the ROM 32, RAM 34, and storage unit 36 and transmission / reception of communication data via the communication line I / F unit 38 by the CPU 30. The gas meter 16 controls the display of various information on the display unit 40, the acquisition of various data via the operation unit 42, and the opening / closing of the shutoff valve 44 by the CPU 30.

  In addition, the gas meter 16 obtains the three-axis acceleration output from the acceleration sensor 46, the sensor abnormality signal output from the ultrasonic sensor 48, and the main body temperature and gas temperature output from the temperature sensor 50 by the CPU 30, respectively. Do. Further, the gas meter 16 obtains 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 by the CPU 30, respectively.

  The gas meter 16 derives an SI (Spectrum Intensity) value as a value indicating the magnitude of the earthquake based on the triaxial acceleration acquired from the acceleration sensor 46 by the CPU 30. In addition, the gas meter 16 is based on the triaxial acceleration acquired from the acceleration sensor 46 by the CPU 30, and the angle of inclination with respect to the horizontal direction of the gas meter 16 (that is, the angle of inclination of the ground at the position where the gas meter 16 is installed). 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 showing the 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 preinstalled in the ROM 32.

  In step 100 of FIG. 3, the CPU 30 acquires 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.

  In the next step 102, the CPU 30 determines whether or not at least one of the outputs of each sensor acquired by the process in 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 safety abnormality will be described.

  The CPU 30 derives the SI value based on the triaxial acceleration output from the acceleration sensor 46, and when the derived SI value is equal to or greater than a threshold value V1 (for example, a value equivalent to a seismic intensity of 5 or higher), It is determined that the output indicates a safety abnormality. Further, the CPU 30 derives the tilt angle based on the triaxial acceleration output from the acceleration sensor 46, and when the derived angle is equal to or greater than the threshold value V2, the output from the acceleration sensor 46 indicates a safety abnormality. It is determined that In addition, 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 greater than the threshold value V3, the output from the acceleration sensor 46 is safe. It is determined that an abnormality is indicated.

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

  Further, 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 safety abnormality. In addition, when the humidity output from the humidity sensor 54 is equal to or higher than the threshold value V6, the CPU 30 assumes that water has entered the gas meter 16 or the gas pipe, and the output from the humidity sensor 54 indicates a safety abnormality. It is determined that Further, the CPU 30 determines that the output from the pressure sensor 56 indicates a safety abnormality when the pressure output from the pressure sensor 56 is outside a range predetermined as the normal value of the gas pressure.

  In step 104, the CPU 30 transmits the safety information determined to indicate a safety abnormality by the processing in step 102 to all 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 safety abnormality, the CPU 30 transmits the SI value, the inclination angle, and the long-period SI value to the other gas meter 16. If the CPU 30 determines that the output from the ultrasonic sensor 48 indicates a safety abnormality, the CPU 30 transmits sensor abnormality information indicating that a sensor abnormality signal has been output from the ultrasonic sensor 48 to the other gas meter 16. .

  When the CPU 30 determines that the output from the temperature sensor 50 indicates a safety abnormality, the CPU 30 transmits the main body temperature and the gas temperature acquired from the temperature sensor 50 to the other gas meter 16. If the CPU 30 determines that the output from the fire sensor 52 indicates a safety 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 meter 16. If the CPU 30 determines that the output from the humidity sensor 54 indicates a safety abnormality, the CPU 30 transmits the humidity acquired from the humidity sensor 54 to another gas meter 16. If the CPU 30 determines that the output from the pressure sensor 56 indicates a safety 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 information transmitted when it is determined that there is a safety abnormality by the other gas meter 16 via the communication line I / F unit 38.

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

  In step 110, the CPU 30 determines that the security abnormality is indicated by the processing of step 102 and the other gas meter 16 received by the processing of step 106, and determines that the safety abnormality is indicated and transmitted. Based on the information, it is determined whether or not a determination criterion for determining that the gas supply is to be shut off is satisfied. When the determination is negative, the CPU 30 returns to the process of step 100. On the other hand, when the determination is affirmative, the process proceeds to step 112. Here, this criterion will be described.

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

  Further, the CPU 30 determines that the gas supply 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 region 12. Further, the CPU 30 determines that the gas supply is cut off when the number of the gas meters 16 that has detected that the main body temperature is equal to or higher than the threshold value V4 is equal to or greater than a predetermined ratio of the number of all the gas meters 16 in the region 12. Further, the CPU 30 supplies the gas when the number of the gas meters 16 that has detected that the difference between the main body temperature and the gas temperature is equal to or greater than the threshold value V5 is equal to or greater than a predetermined ratio of the number of all the gas meters 16 in the region 12. Determine to block.

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

  Note that the determination method related to the shutoff of the gas supply is not limited to the method described above. For example, weighting may be performed according to 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 is larger, and performs a determination related to shutoff of gas supply. Specifically, for example, the CPU 30 counts one gas meter 16 that has detected that the SI value is equal to or greater than the threshold value V1 and less than the threshold value V7 (for example, a value corresponding to seismic intensity of less than 6) that is greater than the threshold value V1. . Further, the CPU 30 counts 1.5 for the gas meter 16 that detects that the SI value is equal to or greater than the threshold value V7 and less than the threshold value V8 that is greater than the threshold value V7 (for example, a value corresponding to a seismic intensity of 6 or higher). Further, the CPU 30 counts two gas meters 16 that have detected that the SI value is equal to or greater than the threshold value V8. Then, the CPU 30 determines that the gas supply is cut off when the number of the gas meters 16 weighted and combined as described above is equal to or greater than a predetermined ratio of the number of all the gas meters 16 in the region 12.

  Further, for example, when changing the predetermined ratio, the CPU 30 makes a determination related to shutting off gas supply by decreasing the predetermined ratio as the SI value increases. Specifically, for example, the CPU 30 detects that the SI value is greater than or equal to the threshold value V7, and the number of gas meters 16 is lower than the predetermined ratio of the number of all gas meters 16 in the region 12 (for example, 60%) or more. In some cases, it is determined that the gas supply is cut off. Further, for example, the CPU 30 determines that the gas supply is cut off when there is even one gas meter 16 that detects that the SI value is equal to or greater than the value corresponding to the seismic intensity 7.

  In addition, the weighting by the detected value and the change of the predetermined ratio described above are not limited to the SI value, but similarly to 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 according to the number of times it is determined that a security abnormality is indicated within a certain period of time by the repeated processing of step 100 to step 108, or the predetermined ratio may be changed. For example, the CPU 30 sets a larger weight value as the number of times that the fire occurrence signal is detected is larger, and makes a determination related to cutoff of gas supply. Specifically, for example, the CPU 30 counts one gas meter 16 that has detected the fire occurrence signal once within the predetermined period. For example, the CPU 30 counts 1.5 for the gas meter 16 that detects the fire occurrence signal a plurality of times (for example, two times or more and less than C1 times (for example, less than 10 times) within the predetermined period. Further, for example, the CPU 30 counts two gas meters 16 that have detected the fire occurrence signal C1 times or more within the predetermined period. Then, the CPU 30 determines that the gas supply is cut off when the number of the gas meters 16 weighted and combined as described above is equal to or greater than a predetermined ratio of the number of all the gas meters 16 in the region 12.

  Further, for example, when changing the predetermined ratio, the CPU 30 makes a determination regarding cutoff of 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 detects that the number of times that the fire occurrence signal has been detected is 2 times or more and less than C1 times, and the number of gas meters 16 detected from the predetermined ratio of the number of all gas meters 16 in the region 12 When the ratio is low (for example, 60%) or more, it is determined that the gas supply is cut off. Further, for example, the CPU 30 determines that the gas supply is cut off when there is even one gas meter 16 that detects the fire occurrence signal C1 times or more within the predetermined period.

  Note that the weighting by the determined number of times described above and the change of the predetermined ratio are not limited to the fire occurrence signal, it is determined that the number of times the sensor abnormality signal is output and the output from the humidity sensor 54 indicates a safety abnormality. The same applies to the number of times and the number of times the output from the pressure sensor 56 is determined to indicate a safety abnormality.

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

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

  4 and 5, as an example, the gas sensor 16B, 16D, 16F, 16G, 16I, and 16J ultrasonic sensor 48 detects a gas abnormality in each gas meter 16 when it detects that the sensor has become abnormal. Is shown. FIG. 4 shows a state where each gas meter 16 individually controls the shutoff of the gas supply using the output from the ultrasonic sensor 48 of its own device. Further, in FIG. 5, each gas meter 16 also outputs outputs from the ultrasonic sensors 48 of other gas meters 16 in the region 12 in addition to the output from the ultrasonic sensor 48 of its own device as in this embodiment. It shows a state in which the gas supply cutoff control is performed.

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

  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 region 12, the gas meter that has not detected that the ultrasonic sensor 48 has become abnormal. The supply of gas via 16A, 16C, 16E, 16H is also shut off.

  6 and 7 show, as an example, a 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. Show. Moreover, in FIG.6 and FIG.7, the SI value derived | led-out from the triaxial acceleration output from the acceleration sensor 46 of gas meters 16 other than gas meter 16E as an example is shown about the state which is more than threshold value V1. In FIGS. 6 and 7, as an example, the SI value of the gas meter 16E shows a state corresponding to a seismic intensity of less than 5, and the SI values of the gas meters 16A, 16B, and 16I are values equivalent to a seismic intensity of 5 or more. The state which is is shown.

  Moreover, in FIG.6 and FIG.7, the said SI value of gas meter 16C, 16D, 16F, 16G, 16J shows the state which is a value equivalent to seismic intensity 6 as an example, and the said SI value of gas meter 16H shows seismic intensity 6 It shows a state corresponding to a strong value. FIG. 6 shows a state where each gas meter 16 individually controls the shutoff of the gas supply using the output from the acceleration sensor 46 of the device itself. Further, in FIG. 7, each gas meter 16 uses the output from the acceleration sensor 46 of another gas meter 16 in the region 12 in addition to the output from the acceleration sensor 46 of its own device as in the present embodiment. A state in which the cutoff of gas supply is controlled is shown.

  As shown in FIG. 6, when each gas meter 16 individually controls the shutoff of gas supply, the gas meters 16A to 16D and 16F to 16J that detect that the SI value is equal to or higher than the threshold value V1 are passed through. The gas supply is shut off. On the other hand, the gas supply through the gas meter 16E that has not detected that the SI value is equal to or greater 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 region 12, the gas meter that has not detected that the SI value is equal to or greater than the threshold value V <b> 1. The supply of gas via 16E is also shut off.

  As described above, according to this embodiment, since it is determined whether or not to cut off the gas supply using a plurality of types of security information, the gas supply using only a single piece of security information. Compared with the case where it is determined whether or not the gas is to be shut off, the gas supply can be shut off with high accuracy.

  Further, according to the present embodiment, since the security information of a plurality of gas meters 16 is used, not only the situation of individual gas meters 16 but also the situation of other gas meters 16 in the region 12 are taken into account. Can be cut 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. In FIG. 8, components having the same functions as those in FIG. 1 are denoted by the same reference numerals as those in FIG. 1, and description thereof is omitted. As shown in FIG. 8, the gas supply control system 10 </ b> B according to the present embodiment includes a governor control device 60 that collectively controls the supply of gas to each gas meter 16.

  The governor control device 60 according to the present embodiment has a governor 76 (see FIG. 9) provided with a shut-off valve 76A (see FIG. 9) that can be opened and closed. Then, the governor control device 60 supplies gas to each gas meter 16 via the governor 76 by opening the shutoff valve 76A. Further, the governor control device 60 shuts off the supply of gas to each gas meter 16 via the governor 76 collectively by closing the shutoff valve 76A.

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

  Next, regarding the gas meter 16 according to the present embodiment, only the portions 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 / reception of communication data via the communication line I / F unit 38 only with the governor control device 60. Further, as described above, the gas meter 16 according to the present embodiment performs only transfer of communication data when communication data is transmitted to and received from the governor control device 60 as described above. Further, the gas meter 16 according to the present embodiment determines whether or not to interrupt the gas supply based on the output from each sensor of the device itself.

  Next, with reference to FIG. 9, the structure of the main part of the electrical system of the governor control device 60 according to the present embodiment will be described. As shown in FIG. 9, the governor control device 60 according to this embodiment includes a CPU 62 that controls the overall operation of the governor control device 60, and a ROM 64 in which various programs, various parameters, and the like 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.

  The governor control device 60 also includes a communication line I / F unit 70 that transmits and receives communication data to and from an external device, and a display unit 72 that notifies the user of various types of information regarding the operation status of the governor control device 60. Yes. In addition, the governor control device 60 includes an operation unit 74 that receives various instructions from the user, and a governor 76 having the above-described shutoff valve 76A. 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 causes the CPU 62 to access the ROM 64, RAM 66, and storage unit 68, and to transmit / receive communication data via the communication line I / F unit 70, respectively. In addition, the governor control device 60 controls the display of various information on the display unit 72, the acquisition of various data via the operation unit 74, and the opening / closing of the shutoff valve 76A by the CPU 62, respectively.

  In addition, the governor control device 60 acquires the triaxial acceleration output from the acceleration sensor 78 by the CPU 62. Further, the governor control device 60, like the gas meter 16 according to the first embodiment, based on the triaxial acceleration acquired from the acceleration sensor 46, the SI value and the inclination of the governor control device 60 with respect to the horizontal direction. Angle and long period SI values are derived respectively.

  Next, with reference to FIG.10 and FIG.11, the effect | action of the gas supply control system 10B which concerns on this Embodiment is demonstrated. FIG. 10 is a flowchart showing the flow of processing of a security information transmission processing program executed by the CPU 30 when the gas meter 16 is turned on, for example. The security information transmission processing program is preinstalled in the ROM 32. Further, steps in FIG. 10 that execute the same processing as in FIG. 3 are denoted by the same step numbers as in FIG. 3, and description thereof is omitted. On the other hand, FIG. 11 is a flowchart showing a flow of processing 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 ensures that at least one of the outputs of each sensor acquired by the process of step 100 is a security as in the process of step 102 of the gas supply control process program according to the first embodiment. It is determined whether or not an abnormality is indicated. When the determination is negative, the CPU 30 returns to the process of step 100. When the determination is affirmative, the CPU 30 proceeds to step 104A.

  In step 104A, the CPU 30 transmits the security information determined to indicate a safety 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 the output from the acceleration sensor 78. In the next step 152, the CPU 62 sends the information transmitted when it is determined that there is a safety abnormality by the gas meter 16 in the region 12 by the processing of step 104 A of the security information transmission processing program via the communication line I / F unit 70. Receive.

  In the next step 154, the CPU 62 determines whether or not the timing for ending the reception of information transmitted from the gas meter 16 has come. If the determination is negative, the CPU 62 returns to the process of step 150. If the determination is positive, the CPU 62 proceeds to step 156. In the present embodiment, as the timing of ending the reception, even when the information transmitted from all the gas meters 16 in the region 12 is received and when the information is not received from all the gas meters 16, The timing when 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 by the process of step 150 and the information transmitted by the gas meter 16 received by the process of step 152 that is determined to indicate a safety abnormality. It is determined whether or not a determination criterion for determining to block is satisfied. As for the determination in this step 156, the SI value derived based on the acceleration obtained by the processing in step 150, the inclination angle, the determination made in the processing in step 110 of the gas supply control processing program, In addition, since a long period SI value may be added, detailed description thereof is omitted here. When this determination is negative, the CPU 62 returns to the process of step 150, whereas when this determination is affirmative, the process proceeds to step 158.

  In step 158, the CPU 62 shuts off the gas supply 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 cutoff instruction information indicating an instruction to shut off the supply of gas to each gas meter 16 via the communication line I / F unit 70, and ends the gas supply control processing program. . On the other hand, each gas meter 16 performs the same processing as the above step 112 when the gas supply to the consumer 14 is not cut off when the gas shutoff instruction information is received and the gas supply to the consumer 14 is not cut off. Shut off the supply.

  In FIGS. 12 and 13, as an example, the SI value derived from the triaxial acceleration output from the acceleration sensor 46 of the gas meter 16E and the triaxial acceleration output from the acceleration sensor 78 of the governor control device 60 are derived. The gas cutoff state when the SI value is less than the threshold value V1 is shown. 12 and 13 show a state where the SI value derived from the triaxial acceleration output from the acceleration sensor 46 of the gas meter 16 other than the gas meter 16E is equal to or greater than the threshold value V1, as an example.

  12 and 13, as an example, the SI value of the gas meter 16E shows a state corresponding to a seismic intensity of less than 5, and the SI values of the gas meters 16A, 16B, and 16I are values equivalent to a seismic intensity of 5 or more. The state which is is shown. Moreover, in FIG.12 and FIG.13, the said SI value of gas meter 16C, 16D, 16F, 16G, 16J shows the state equivalent to a seismic intensity 6 weak value as an example, and the said SI value of gas meter 16H shows seismic intensity 6 It shows a state corresponding to a strong value. Moreover, in FIG.12 and FIG.13, the said SI value of the governor control apparatus 60 has shown the state which is a value equivalent to a seismic intensity 5 weak as an example.

  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. Further, in FIG. 13, as in this embodiment, the governor control device 60 uses the output from the acceleration sensor 46 of each gas meter 16 in the region 12 in addition to the output from the acceleration sensor 78 to supply the gas. A state in which the shutoff control is performed is shown. FIG. 13 shows a state in which the governor control device 60 has transmitted the shut-off 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 shut 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 region 12, each gas meter from the governor control device 60. The gas supply to 16 is cut off. Further, since the cutoff instruction information is transmitted from the governor control device 60 to each gas meter 16, the supply of gas through the gas meter 16E that has not detected that the SI value is equal to or greater than the threshold value V1 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 the gas supply from the governor control device 60 to each gas meter 16 is cut off, but also the cutoff instruction information is transmitted from the governor control device 60 to each gas meter 16. Thereby, compared with the case where only supply of the gas from the governor control apparatus 60 to each gas meter 16 is interrupted | blocked, the leak of gas is suppressed more.

  In the present embodiment, the gas meter 16 also performs the process of shutting off the gas supply in the security information transmission process program, 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, but supplies the gas only when the cutoff instruction information transmitted in the process of step 160 of the gas supply control process is received. May be blocked. In this case, step 112 of the security information transmission processing program is not necessary.

  In the present embodiment, the governor control device 60 transmits the cutoff 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 cutoff instruction information to each gas meter 16. May be. In this case, step 160 of the gas supply control processing program is not necessary.

  In the present embodiment, the gas meter 16 determines whether or not to cut off the gas supply using only the output from each sensor of the device itself, but is not limited thereto. Also in the present embodiment, as in the first embodiment, the gas meter 16 also cuts off the gas supply using the information transmitted by the other gas meter 16 determined to indicate a safety abnormality. Whether or not it may be determined.

  Although not specifically mentioned in the present embodiment, the gas supply cutoff by the governor control device 60 has a larger influence range than the gas supply cutoff by each gas meter 16, and therefore the processing of step 156 described above. The predetermined ratio used for the determination may be a stricter value (that is, a larger value) than in the first embodiment.

  For example, when the governor control device 60 determines that the disaster is a large-scale disaster, such as when the SI value of the governor control device 60 is greater than or equal to a seismic intensity of 7, the information transmitted from each gas meter 16 is used. Instead, the gas supply 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. In FIG. 14, components 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, the gas supply control system 10C according to the present embodiment is provided in a management center (not shown) and supervises a plurality of governor control devices 60 installed one by one in a plurality of regions 12A to 12L. A management device 200 for managing them. In addition, since the structure of the governor control apparatus 60 in each area 12A-12L and the gas meter 16 installed in the consumer 14 is the same as that of the said 2nd Embodiment, description here is abbreviate | omitted. Moreover, in order to avoid complication, in FIG. 14, illustration of the consumer 14 and the gas meter 16 in the areas 12B to 12L is omitted. In the following, the alphabet at the end of the code is omitted when it is not necessary to distinguish the regions 12A to 12L.

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

  Next, the governor control device 60 according to the present embodiment will be described only with respect to differences from the governor control device 60 according to the second embodiment. In the governor control device 60 according to the present embodiment, the CPU 62 transmits and receives communication data via the communication line I / F unit 70 to the gas meter 16 and also performs the management device 200.

  Next, with reference to FIG. 15, the main configuration of the electrical system of the management apparatus 200 according to the present embodiment will be described. As shown in FIG. 15, the management apparatus 200 according to the present embodiment includes a CPU 202 that controls the overall operation of the management apparatus 200, and a ROM 204 that stores various programs, various parameters, and the like in advance. In addition, the management apparatus 200 includes a RAM 206 that is used as a work area when the CPU 202 executes various programs, and a nonvolatile storage unit 208 such as a flash memory.

  In addition, the management device 200 includes a communication line I / F unit 210 that transmits / receives communication data to / from an external device, a display unit 212 that notifies the user of various information related to the operation status of the management device 200, and various types of information from the user An operation unit 214 that receives instructions is provided. The CPU 202, ROM 204, RAM 206, storage unit 208, communication line I / F unit 210, display unit 212, and operation unit 214 are connected to each other via a bus 216.

  With the above configuration, the management apparatus 200 according to the present embodiment uses the CPU 202 to access the ROM 204, RAM 206, and storage unit 208, and to transmit / receive communication data via the communication line I / F unit 210. In addition, the management apparatus 200 causes the CPU 202 to display various types of information on the display unit 212 and acquire various types of 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 showing the flow of processing 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. Also, steps in FIG. 16 that execute the same processing as in FIG. 11 are denoted by the same step numbers as in FIG. On the other hand, FIG. 17 is a flowchart showing a flow of processing of a gas supply management processing program executed by the CPU 202 when the power of the management device 200 is turned on, for example. The gas supply management processing program is installed in the ROM 204 in advance. Further, since the operation of the gas meter 16 is the same as that of the second embodiment (see FIG. 10), description thereof is omitted here.

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

  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 process of step 156 is greater than or equal to a predetermined ratio of the number of all gas meters 16 in the region 12 If it is determined that the gas supply is to be shut off, information indicating that the safety abnormality is due to the SI value is transmitted to the management apparatus 200 as the type information.

  Further, for example, when the CPU 62 determines that the supply of gas is cut off because the number of gas meters 16 that have detected the sensor abnormality signal 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 region 12. Information indicating that the safety abnormality is due to the sensor abnormality of the ultrasonic sensor 48 is transmitted to the management apparatus 200 as the type information. Similarly, the CPU 62 uses the information based on the information on the tilt angle, the long-period SI value, the body temperature, the difference between the body temperature and the gas temperature, the fire occurrence signal, the humidity, and the gas pressure. Type information is transmitted to the management device 200.

  In step 250 of FIG. 17, the CPU 202 receives the type information and position information transmitted from the governor control device 60 by the process of step 162. In the next step 252, the CPU 202 determines whether or not it is time to finish receiving the type information transmitted from the governor control device 60. If the determination is negative, the CPU 202 returns to the process of step 250. If the determination is affirmative, the CPU 202 proceeds to step 254. In the present embodiment, as the timing of ending the above reception, 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 Even when the information is not received, the timing when 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 position information received by the processing in step 250, and there is a governor control device 60 that has not transmitted type information among all governor control devices 60 to be managed. It is determined whether or not to do. If this determination is negative, the CPU 202 regards that all governor control devices 60 to be managed have cut off the supply of gas, and returns to the processing of step 250 above. On the other hand, if the determination is affirmative, the CPU 202 proceeds to the process of step 256.

  In step 256, the CPU 202 designates any of the governor control devices 60 determined not to transmit the type information by the processing in step 254 as a processing target (hereinafter referred to as “processing target device”). It is determined whether 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 a processing target device.

  Note that the CPU 202 does not determine whether or not 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 type information is transmitted from the control device 60. In addition, the number of adjacent governor control devices 60 for determining whether or not the type information is transmitted may be appropriately determined according to the required determination accuracy and 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 cutoff instruction information for instructing cutoff of gas supply to the processing target apparatus. The process target device performs the same process as in steps 158 and 160 when it receives the block instruction information.

  In step 260, the CPU 202 determines whether or not the above-described steps 256 and 258 have been performed on all governor control devices 60 that have been determined not to transmit the type information by the processing in step 254. If the determination is negative, the CPU 202 returns to the process of step 256. If the determination is affirmative, the CPU 202 proceeds to step 262.

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

  In FIG. 18 and FIG. 19, as an example, the state in which the governor control device 60 in the regions 12A, 12D to 12F, 12H, and 12I determines that a fire has occurred based on the information transmitted from each gas meter 16 is shown. Show. FIG. 18 shows a state where 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 to shut 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 cut-off of gas supply, the governor control device 60 in the region 12G does not cut off the gas supply. On the other hand, as shown in FIG. 19, the governor control devices 60 in the regions 12A, 12D to 12F, 12H, and 12I adjacent to the region 12G determine that a fire has occurred. 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 in the region 12G based on the type information. Sends block instruction information to Accordingly, the supply of gas from the governor control device 60 in the region 12G where it is not determined that a fire has occurred is cut off.

  In addition, in FIG.18 and FIG.19, although the fire was demonstrated as an example, it is not restricted to this. The same applies to other cases where the damaged area gradually spreads due to a large-scale disaster, for example, when it is determined by the humidity sensor 54 that water has entered the gas meter 16 or the gas pipe (that is, flood). .

  As described above, according to the present embodiment, the same effects as those of the first embodiment and the second embodiment can be obtained. Further, according to the present embodiment, the management device 200 determines whether to shut off the gas supply based on information transmitted from the plurality of governor control devices 60. Thereby, compared with the case where each governor control device 60 determines whether to cut off the supply of gas individually, the supply of gas can be cut off with high accuracy.

  In the present embodiment, the management apparatus 200 receives the type information from each governor control apparatus 60, but the present invention is not limited to this. For example, as with 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, if the management apparatus 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 as in the governor control apparatus 60 according to the second embodiment. Good.

  Although each embodiment has been described above, the technical scope of the present invention is not limited to the scope described in each embodiment. Various modifications or improvements can be added to the above-described embodiments without departing from the gist of the invention, and embodiments to which the modifications or improvements are added are also included in the technical scope of the present invention.

  In addition, each of the above embodiments does not limit the invention according to the claims (claims), and all combinations of features described in each embodiment are indispensable for solving means of the invention. Not necessarily. Each embodiment described above includes inventions at various stages, and various inventions are extracted by combining a plurality of disclosed constituent elements. Even if several constituent requirements are deleted from all the constituent requirements shown in the respective embodiments, the configuration from which these several constituent requirements are deleted can be extracted as an invention as long as the effect is obtained.

  For example, in each of the above embodiments, a case has been described in which the supply of gas is shut down when at least one of the plurality of types of security information satisfies the determination criterion, but the present invention is not limited to this. . For example, it is good also as a form which interrupts | blocks supply of gas, when two or more satisfy | fills a criterion with respect to multiple types of security information. 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 of a configuration in which the supply of gas is cut off when a plurality of types of correlated safety information satisfy the determination criteria is exemplified.

  Further, although not particularly mentioned in each of the above-described embodiments, an automatic return of gas supply may be controlled after the gas supply is shut off. In this case, after the gas meter 16 cuts off the gas supply, even if the output from each sensor does not indicate a safety abnormality, it is determined that the other gas meter 16 indicates a safety abnormality and is transmitted. On the basis of the information obtained, when it is determined that the gas supply is to be shut off by the same process as the process of Step 110 of the first embodiment, a mode of performing a control to prohibit the automatic return is exemplified.

  In addition, for example, even when the governor control device 60 shuts off the gas supply and the output of the acceleration sensor 78 does not indicate a safety abnormality, it is determined that each gas meter 16 indicates a safety abnormality. In the case where it is determined that the gas supply is to be shut off by the same processing as in Step 156 of the second embodiment based on the information transmitted in this manner, a mode in which control for prohibiting automatic return is performed is exemplified.

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

  Furthermore, in each of the above-described embodiments, a case has been described in which each process of the gas supply control process, the security information transmission process, and the gas supply management process is realized by a software configuration using a computer by executing a program. However, the present invention is not limited to this. For example, each processing 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 described in the above embodiments (see FIGS. 1, 2, 8, 9, 14, and 15) are examples. It goes without saying that unnecessary portions may be deleted or new portions may be added within a range not departing from the gist of the present invention.

  The processing flow of each program described in each of the above embodiments (see FIGS. 3, 10, 11, 16, and 17) is also an example, and is not necessary within the scope of the present invention. It goes without saying that simple steps may be deleted, new steps may be added, and the processing order may be changed.

10A, 10B, 10C ... Gas supply control system, 12 ... Region, 14 ... Consumer, 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 (12)

Receiving means for receiving a plurality of types of security information related to the security of the gas transmitted from a plurality of gas meters installed in each of a plurality of consumers in a predetermined area;
A determination unit that determines that there is an abnormality in gas security when at least one type of security information of the plurality of types of security information received by the reception unit satisfies a predetermined determination criterion;
Control means for performing control to cut off the supply of gas to the consumer where the gas meter is installed when it is determined by the determination means that there is an abnormality;
A gas supply control device. The plurality of types of security information includes a value indicating the magnitude of the earthquake at the installation position of the gas meter, an angle of inclination of the ground at the installation position, a value indicating long-period vibration of the installation position, and a value provided in the gas meter. The output from the sonic sensor, the temperature of the gas meter, the temperature of the gas in the gas meter, the output of the fire sensor for detecting whether or not a fire has occurred at the installation position, the humidity in the gas meter, and the Including two or more of the pressure of the gas,
The determination means includes the number of the gas meters whose magnitude indicating the magnitude of the earthquake is equal to or greater than a first threshold, the number of the gas meters whose angle of inclination is equal to or greater than a second threshold, and the value indicating the long-period vibration. The number of gas meters that are three or more thresholds, the number of gas meters that output a sensor abnormality signal indicating sensor abnormality from the ultrasonic sensor, the number of gas meters that have a temperature of the gas meter that is a fourth threshold or more, and the gas meter The difference between the temperature of the gas and the temperature of the gas is equal to or greater than a fifth threshold, the number of the gas meters to which a fire occurrence signal indicating that a fire has occurred is output from the fire sensor, and the humidity is sixth. The number of the gas meters that are equal to or greater than a threshold value, and the gas meter in which the pressure of the gas is out of a predetermined range as a normal value range of the gas pressure The number of the case where at least one or more predetermined percentage of the number of gas meters of the area, the gas supply control device and determines according to claim 1, wherein there is an abnormality in the safety gas. The gas supply control device according to claim 2, wherein the determination unit performs the determination by decreasing the predetermined ratio as the frequency of reception by the reception unit for each type of the security information within a certain period increases. The determination unit performs the determination by setting a larger weight value with respect to the number of the gas meters and weighting as the frequency of reception by the reception unit for each type of the security information within a certain period increases. Or the gas supply control apparatus of Claim 3. The determination means includes a value indicating the magnitude of the earthquake, an angle of the inclination, a value indicating the long-period vibration, a temperature of the gas meter, and a value having a large difference between the temperature of the gas meter and the temperature of the gas. The gas supply control device according to any one of claims 2 to 4, wherein the determination is performed by lowering the predetermined ratio as the amount increases. The determination means includes a value indicating the magnitude of the earthquake, an angle of the inclination, a value indicating the long-period vibration, a temperature of the gas meter, and a value having a large difference between the temperature of the gas meter and the temperature of the gas. The gas supply control device according to any one of claims 2 to 5, wherein the determination is performed by setting a larger weight value with respect to the number of the gas meters and performing weighting. A gas supply control device according to any one of claims 1 to 6,
Transmitting means for transmitting the plurality of types of security information of the own device to another gas meter;
A plurality of gas meters having
The determination unit includes the plurality of types of security information of the own device and at least one type of the security information transmitted from the other gas meter and received by the reception unit satisfies the determination criteria. It is determined that there is an abnormality in gas security,
The said control means performs control which interrupts | blocks supply of the gas to the said consumer with which the own apparatus is installed, when it determines with the said determination means having abnormality. The gas supply control system. A governor control device comprising the gas supply control device according to any one of claims 1 to 6, wherein the governor control device controls gas supply to a plurality of consumers in the area,
A plurality of gas meters having transmission means for transmitting the plurality of types of security information of the own device to the governor control device;
With
The determination means is abnormal in gas security when at least one type of security information of the plurality of types of security information transmitted from the plurality of gas meters and received by the reception means satisfies the determination criteria. And
The said control means performs control which interrupts | blocks supply of the gas to these gas meters, when it determines with the determination means having abnormality. The gas supply control system. A management device for managing the supply of gas in the plurality of regions for each region;
The governor control device includes second transmission means for transmitting type information indicating types of the plurality of types of security information,
When the determination means determines that there is an abnormality, the control means transmits type information indicating the type of security information determined to be abnormal by the determination means to the management device by the second transmission means. To further control
The management device
Third transmission means for transmitting cutoff instruction information indicating an instruction to shut off the supply of gas;
Second receiving means for receiving the type information;
For the governor control device in which the type information is not received by the second receiving means, the second reception from a governor control device provided in an area adjacent to the area in which the non-received governor control apparatus is provided. If the type information is received by the means, second control means for performing control to transmit the blocking instruction information to the governor control device not received by the third transmission means;
With
The receiving means further receives the blocking instruction information;
The gas supply control system according to claim 8, wherein the control unit further performs a control to cut off the supply of gas to the plurality of gas meters when the cutoff instruction information is received by the reception unit. The governor control device includes second transmission means for transmitting cutoff instruction information indicating an instruction to shut off the supply of gas,
10. The control unit according to claim 8, wherein the control unit further performs control to transmit the cutoff instruction information to the plurality of gas meters by the second transmission unit when the determination unit determines that there is an abnormality. Gas supply control system. A gas supply control device according to any one of claims 1 to 6, and a transmission means for transmitting cutoff instruction information indicating an instruction to shut off the supply of gas, and supplying a plurality of gases in the region A management device that manages each area,
A plurality of gas meters provided in each region, and having a second transmission means for transmitting the plurality of types of security information of the own device to the management device;
A governor control device that is provided in each region and controls the supply of gas to a plurality of consumers in the region;
With
The determination unit is configured to provide gas security when at least one type of security information of the plurality of types of security information transmitted from the plurality of gas meters and received by the reception unit satisfies the determination criterion for each region. Is determined to be abnormal,
The control means, when it is determined that there is an abnormality by the determination means, the cutoff instruction information for at least one of the governor control device and the plurality of gas meters in the area determined to have the abnormality A gas supply control system for performing a control of transmitting by the transmission means. Receives multiple types of security information related to the security of gas transmitted from multiple gas meters installed at each of multiple customers within a given area,
When at least one type of security information of the received plurality of types of security information satisfies a predetermined criterion, it is determined that there is an abnormality in gas security,
A control method for a gas supply control device, comprising: performing control to shut off supply of gas to the consumer in which the gas meter is installed when it is determined that there is an abnormality in gas security.

Images