JPH0894464A - Pressure monitor - Google Patents

Abstract

PURPOSE: To keep daily pressure monitoring information surely even upon deviation from normal operation. CONSTITUTION: The pressure monitor comprises means 2 for detecting variation in the flow rate of fluid through a flow sensor 1 and delivering a flow rate variation signal, a pressure monitoring means 6 for making a decision that the pressure is abnormal when the pressure measured by a fluid pressure measuring means 5 deviates from a preset threshold value for deciding an abnormal state, and a nonvolatile memory means 9 for storing the pressure measured by the pressure measuring means 5 and the pressure being decided abnormal by the pressure monitoring means 6. Since the nonvolatile memory means 9 stores daily information of monitored pressure, the daily information can be kept surely even if a microcomputer functions erroneously due to noise or abnormality in the power supply.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure monitoring device for diagnosing the function of a pressure regulator and maintaining and managing a supply facility.

[0002]

2. Description of the Related Art A gas meter will be described as an example of a conventional pressure monitoring device. In the conventional gas meter, as shown in FIG. 7, a flow rate sensor 1 that detects whether or not the flow rate of the fluid is flowing (in use), and a flow rate that detects a change in the flow rate state by the signal of the flow rate sensor 1 and outputs the signal. A pressure measuring unit 5 comprising a change detecting unit 2 and a pressure measuring unit 4 for supplying a power to a pressure sensor 3 attached to a fluid flow path in response to a signal from the flow rate change detecting unit 2 to measure the pressure of the fluid; Pressure measuring means 5
Pressure monitoring means 6 for determining whether or not a threshold value set in advance for determining an abnormal state of the measured pressure of 6 is deviated.
And a volatile storage means 24 for storing abnormality information and a communication means 10 for outputting a signal to the outside when the pressure monitoring means 6 determines that the pressure monitoring means 6 is in an abnormal state. Then, the flow rate change detecting means 2, the pressure measuring means 5, the pressure monitoring means 6, the communication means 1
0, the storage means 24 is composed of a microcomputer (hereinafter, microcomputer) 11, and the power supply to the microcomputer 11 is a battery 12
Supplied by. The communication means 10 uses a telephone line via the network control means 13 to transmit information to the outside.

With the above-described conventional configuration, the pressure on the upstream side of the gas meter is monitored, and the monitoring contents such as the pressure measurement value and the measurement date and time are stored in the storage means 24 at appropriate times.

Further, as a conventional example using a non-volatile storage means, for example, one disclosed in Japanese Patent Application Laid-Open No. 02-190715 is related.

[0005]

However, in the above-mentioned conventional configuration, when the battery 11 becomes abnormal and the storage means 20 has a voltage below the voltage for holding the stored content, or the microcomputer 11 malfunctions due to noise or the like, There are problems that the abnormality determination reference value and the daily monitoring information are volatilized when the reset state is set, and that pressure monitoring cannot be continued. The present invention solves the above problems, and a first object thereof is to provide a pressure monitoring device that can hold pressure measurement information and an abnormality determination result even if the microcomputer 11 malfunctions due to noise or power abnormality. .

A second purpose is that even if the microcomputer 11 malfunctions due to noise or an abnormal power supply, the pressure value in the fluid supply pipe, the number of times the fluid is used, the supply pressure (adjustment pressure) abnormality during use, and the use. Judgment result of supply pressure (closure pressure) abnormality at the end, judgment value for judging abnormality, setting value necessary for pressure measurement, discrimination result between use side container and spare container, presence / absence of empty signal, calendar, pressure Monitoring start date and abnormal occurrence date and time, supply equipment regular replacement time, caller's telephone number, customer identification code, instrument number, etc. necessary setting for data transmission with the outside, password required for reading and writing data It is a provision of a pressure monitoring device capable of holding information such as.

A third object is to keep the monitoring information even if the microcomputer malfunctions due to noise or power supply abnormality, and to store the daily pressure monitoring information in a removable non-volatile storage unit which can be detached. The present invention is to provide a pressure monitoring device capable of storing pressure monitoring information for several years in the replacement unit by replacing the replaced replacement unit.

A fourth object is to manage the storage area of the removable non-volatile storage means that stores the daily pressure monitoring information and is highly reliable in that no pressure monitoring information is lost due to lack of the storage area. It is the provision of a monitoring device.

A fifth object is that, when the removable replaceable non-volatile memory means for storing the daily pressure monitoring information is filled with the monitoring information and the worker comes to the replacement, the static electricity charged to the worker in winter or the like. (EN) A pressure monitoring device capable of automatically returning the pressure monitoring device to continue pressure monitoring when the microcomputer malfunctions and deviates from normal operation due to other factors.

Further, a sixth object is an operation necessary for continuing normal operation such as calendar information by data transmission with the outside when the microcomputer malfunctions due to static electricity or other influences and the pressure monitoring device is automatically restored. It is possible to provide a pressure monitoring device capable of normally continuing pressure monitoring by confirming whether information is correct or not and correcting correctly if the information is incorrect.

[0011]

In order to achieve the first object, the present invention is based on a flow rate sensor which detects a flow rate state of whether or not a fluid is flowing and outputs a flow rate signal, and based on the flow rate signal. A flow rate change detecting means for detecting a change in the flow rate state of the fluid and outputting a flow rate change signal, a pressure measuring means for measuring the pressure of the fluid according to the flow rate change signal, and a pressure measured by the pressure measuring means is abnormal in advance. A pressure monitoring unit that determines an abnormality when a threshold value set to determine the state is determined to be abnormal, and a non-volatile memory that stores the pressure measured by the pressure measuring unit and the measured pressure determined to be abnormal by the pressure monitoring unit. It has a storage means.

In order to achieve the second object of the present invention, the number of times of use measuring means for measuring the number of times of use of the fluid based on the flow rate change signal, and the use side container and the spare container for supplying the fluid are identified. Identification means, container management means for outputting an empty signal when the remaining amount of fluid in the use side container falls below a preset threshold value, timer means for managing the calendar,
Having a communication means for exchanging data with the outside, at least the pressure value in the fluid supply pipe measured by the pressure measuring means,
The number of times the fluid has been used, the supply pressure (adjustment pressure) abnormality during use of the fluid determined by the pressure monitoring means, the supply pressure (blocking pressure) abnormality at the end of use of the fluid, etc., the determination value for determining the abnormality , Setting value required for pressure measurement, identification result of using side container and spare container, presence / absence of empty signal, calendar, pressure monitoring start date and abnormal occurrence date and time, supply equipment regular replacement time, password required for reading and writing data , A non-volatile storage means for storing setting values necessary for data transmission with the outside, such as a telephone number to be called, a customer identification code, and a device number.

Further, in order to achieve the third object, the present invention is provided with a non-volatile memory means composed of a fixed part fixed to the pressure monitoring device and a removable replacement part.

Further, in order to achieve the fourth object, the present invention manages an empty storage area of the replacement section, and when the preset replacement time of the replacement section is reached, a storage area management means for notifying the replacement time to the outside. It is equipped with.

In order to achieve the fifth object, the present invention provides an abnormality detecting means for outputting an abnormal operation signal when the pressure monitoring device deviates from a normal operation due to the influence of noise, and the abnormal operation signal. The recovery means is provided for restarting the pressure monitoring device using the operation information stored in the fixed part.

Further, in order to achieve the sixth object, according to the present invention, when the returning means restarts the pressure monitoring device, the correctness of the operation information is confirmed by data transmission with the outside, and the content is incorrect. For example, it is equipped with a correction means for correcting the contents to be correct.

[0017]

According to the present invention, the rewritable non-volatile storage means stores the daily pressure measurement information and the abnormality determination result, and the daily pressure measurement is performed even if the microcomputer malfunctions due to noise or power abnormality. Holds information and abnormality determination results.

Further, the rewritable non-volatile storage means has a pressure value in the fluid supply pipe, which is pressure monitoring information and operation information, the number of times of use of the fluid, an abnormal supply pressure (adjustment pressure) during use, and the end of use. Judgment result of abnormal supply pressure (blocking pressure),
Judgment value for judging abnormality, setting value necessary for pressure measurement, discrimination result between use side container and spare container, presence / absence of empty signal,
When reading / writing data, such as calendar, pressure monitoring start date / error occurrence date / time, supply equipment regular replacement time, call destination telephone number / customer identification code / device number, etc. It acts to store necessary information such as passwords, and retains pressure monitoring information and operation information even if the microcomputer malfunctions due to noise or power failure.

Further, the removable non-volatile storage unit which acts as a removable unit stores the daily pressure monitoring information, and holds the daily pressure monitoring information even if the microcomputer malfunctions due to noise or power supply abnormality. It is a replaceable type and easy to store.

Further, the storage area management means functions to manage the free storage capacity of the replacement section, and the pressure information is surely stored without being missed.

Also, when the replacement section is full of pressure monitoring information and the operator replaces it, or when the pressure monitoring apparatus deviates from normal operation due to static electricity charged to the operator or other influences, the restoring means is provided. The pressure monitoring device operates to automatically restore the pressure monitoring device based on the operation information necessary for the pressure monitoring device to operate normally stored in the fixed portion, and the pressure monitoring is continued.

Further, when the pressure monitoring device deviates from the normal operation due to the influence of noise and the restoring means restarts the pressure monitoring device, the correcting means transmits the data to the outside and the pressure monitoring device after the restoration is normal. Check the contents of the operation information required to continue the abnormal operation and check the abnormal data (for example, calendar information)
If so, it acts to correct and continues pressure monitoring accurately.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG. The same parts as those in the conventional example are designated by the same reference numerals. In FIG. 1, 1 is a flow rate sensor that detects whether or not the flow rate of the fluid is flowing (in use), and 2 is a flow rate change that detects a change in the flow rate state by the flow rate signal of the flow rate sensor 1 and outputs a flow rate change signal. Detecting means 3 is a pressure sensor attached to the fluid flow path, and 4 is a flow rate change signal from the flow rate change detecting means 2 and supplies power to the pressure sensor 3 attached to the fluid flow path to measure the fluid pressure. It is a pressure measuring unit that operates. Then, the pressure sensor 3 and the pressure measuring unit 4 constitute pressure measuring means 5 for measuring the pressure of the fluid. Reference numeral 6 denotes a pressure monitoring unit that determines an abnormality when the measured pressure of the pressure measuring unit 5 deviates from a threshold value set in advance to determine an abnormal state. Reference numeral 7 is a non-volatile storage unit that stores the pressure measured by the pressure measuring unit 5 and the measured pressure determined by the pressure monitoring unit 6 as abnormal, and 8 is an input / output unit that reads / writes data from / to the non-volatile storage unit 7. The non-volatile storage means 9 is composed of the non-volatile storage unit 7 and the input / output unit 8. Reference numeral 10 is a communication means for transmitting data to the outside when the pressure monitoring means 6 determines that it is in an abnormal state. Then, the flow rate change detecting means 2, the pressure measuring means 5, the pressure monitoring means 6, the input / output unit 9, and the communication means 10 are constituted by the microcomputer 11, and this device is driven by the power source of the battery 12. The communication unit 10 uses a telephone line via the network control unit 13 to transmit information to the outside.

In this embodiment, the nonvolatile storage means 9
Is composed of an EEPROM and inputs / outputs data by serial communication.

The pressure sensor of the first embodiment is composed of the flow sensor 1 and the battery 12.

Next, the operation of this embodiment will be described in detail with reference to the flowchart of FIG. In this embodiment, the battery 12 is intermittently operated every 0.5 seconds in order to guarantee the operation for 10 years (S1). Then, every 0.5 seconds, the flow rate signal of the flow rate sensor 1 is used to detect whether or not the flow rate of the fluid is flowing (in use) (S2). A change in the use status is detected whether the start of use or the end of use is detected (S3). If there is a change, the pressure measuring means 5 supplies power to the pressure sensor 3 attached to the fluid flow path to measure the fluid pressure (S).
5). If there is no change in the usage status in S3, it is determined whether or not the fluid is flowing (S4). If not flowing in S4, the process returns to S1. If it is flowing in S4, the pressure measurement in S5 is performed. The pressure measuring means 5 of the present embodiment considers the pressure stabilization time due to the capacity of the supply pipe of the fluid, etc., and when the fluid starts to be used or when the use is finished, after a predetermined time (for example, 5 seconds). After) is set to measure the pressure. In addition, when in use, the supply pressure is set to be measured every 15 minutes. Next, the pressure monitoring means 6
It is determined whether the pressure value measured in S5 deviates from a threshold value set in advance to determine an abnormal state (S
6). In the present embodiment, the supply pressure (hereinafter referred to as the adjusting pressure) of the LP gas during the legally specified use is from 255 mmH ₂ o to 3 mm.
It is monitored at 30 mmH ₂ o, the supply pressure at the end of use (hereinafter referred to as a closing pressure) is monitored at 350 mmH ₂ o or less, and it is considered abnormal when the monitored pressure value deviates three times a week. Next, when the pressure monitoring means 6 determines the abnormality, the communication means 10 uses the telephone line via the network control means 13 to notify the LP gas supply company of the abnormality content (S7). Then, the non-volatile storage means 9 records the adjusting pressure and the closing pressure, the abnormal value of the adjusting pressure, and the abnormal value of the closing pressure, which are the pressure information in the pipe for supplying the fluid (S8).

In this embodiment, the contents stored in the non-volatile storage means 9 can be read and written from the outside by using the telephone line, and the password can be read and written after the password is input from the outside.

With the above configuration, pressure monitoring information, such as pressure information in the piping for supplying fluid to the non-volatile storage means 9, abnormal pressure value and closed pressure, abnormal value of adjusted pressure and abnormal value of closed pressure, etc., is stored. Even if the microcomputer malfunctions due to noise, power supply abnormality, etc., the daily pressure monitoring information can be reliably retained.Therefore, pressure monitoring information can be used to adjust regulator failures, corrosion deterioration, damage, and supply pipe deterioration. -When configuring a system that facilitates maintenance and periodical replacement of supply equipment such as detection of gas leaks due to corrosion, system reliability is improved. In addition, in the present embodiment, the non-volatile storage means 9
Does not include a magnetic recording element or a magneto-optical storage element,
By using the EPROM, the current consumption during reading and writing can be reduced, and the device can be operated for a long time (for example, 10 years) by the power supply of the battery 12.

Even if a flash memory is used, the same low current consumption can be achieved, and it becomes possible to operate the device for a long time with the power source of the battery 12. Furthermore, it can also be used as a self-recording pressure gauge.

Even if the non-volatile memory means 9 is constructed inside the microcomputer, the same effect can be obtained, and the operation of reducing the board mounting area and the number of parts can be reduced, and the cost can be reduced.

The second embodiment will be described with reference to FIG. The same parts as those in FIG. 1 of the first embodiment are designated by the same reference numerals. In FIG. 3, 5 is a pressure measuring means for measuring the pressure of the fluid, and 6 is abnormal when the measured pressure of the pressure measuring means 5 deviates from a threshold value set in advance for judging an abnormal state. Is a non-volatile storage means, 14 is a number-of-uses measuring means for measuring the number of times of use of the fluid based on the flow rate change signal of the flow rate change detecting means 2, and 15 is a side of the container used for supplying the fluid (no Identification means for distinguishing between the illustrated container) and the spare container side (not shown), 16 is a container management device that outputs an empty signal when the fluid remaining amount of the container on the use side is below a preset threshold value, and 17 manages the calendar. It is a timer means. The nonvolatile storage means 9 of the present embodiment includes the pressure value in the fluid supply pipe measured by the pressure measurement means 5, the number of times of use of the fluid measured by the number-of-uses measurement means 14, the abnormal adjustment pressure determined by the pressure monitoring means 6, and The determination result such as the blockage pressure abnormality, the determination value for the pressure monitoring means 6 to determine the abnormality, the set value necessary for the pressure monitoring means 5 to measure the pressure (for example, the correction value of the pressure sensor 3), and the identification means 15 identify. The identification result of the used side container and the spare container, the presence or absence of an empty signal output from the container management means 16, the calendar managed by the timer means 17, the preset pressure monitoring start date and the supply equipment regular replacement time, the abnormality occurrence date and time, the nonvolatile When the reading / writing of the property storage means 9 is performed, a password, a telephone number to be called, a customer identification code, a set number, and the like necessary for data transmission with the outside are stored. The flow rate change detecting means 2, the pressure measuring means 5, the pressure monitoring means 6, the non-volatile storage means 9, the communication means 10, the number-of-uses measuring means 14, and the timer means 17 are configured by the microcomputer 11, and the present device is provided with a battery 12. Powered by power supply. Communication means 10
Uses the telephone line via the network control means 13 to transmit information to the outside.

In this embodiment, the nonvolatile storage means 9
Is composed of an EEPROM and inputs / outputs data by serial communication.

The pressure sensor of the second embodiment is constituted by the flow rate sensor 1 and the battery 17.

Next, the operation of this embodiment will be described in detail with reference to the flowchart of FIG. In this embodiment, the battery 12 is intermittently operated every 0.5 seconds in order to guarantee the operation for 10 years (S11). Then, every 0.5 seconds, it is detected by the flow rate signal of the flow rate sensor 1 whether or not the flow rate of the fluid is flowing (in use) (S12). Next, the flow rate change detection means 2 detects a change in the usage status based on the flow rate signal of the flow rate sensor 1 whether the fluid has started to be used or has been used (S).
13). If there is a change, it is judged whether or not the use count measuring means 14 is at the start of use (S14), and if use is started, the use count is counted (S15). Next, if there is no change in S13 (No.), it is determined whether it is in use or finished (S16). If the use is stopped (No.),
Return to S11. When it is in use (Yes.) And when there is a change in the usage status, the pressure measurement is performed in S17. Then, the left-right relationship between the use side container and the spare container (not shown) in which the identification means 15 is arranged on the left and right sides is confirmed (S18). In the present embodiment, for example, the container arranged on the left side is the use side container and the container arranged on the right side is the spare container, and the use side can be confirmed by the lever, and the direction of the lever is confirmed by the identifying means 15 and used. Identify the side. Next, the container management means 16 outputs an empty signal and supplies the fluid from the spare container (right side) when the remaining amount of the fluid in the use side container (left side) becomes less than or equal to a preset threshold value (S19). Next, the pressure monitoring means 6 determines whether or not the pressure value measured in S17 deviates from a threshold value set in advance to determine an abnormal state (S6). In this embodiment, the legally regulated adjustment pressure of the LP gas is set from 255 mmH ₂ o to 33 mm.
It is monitored at 0 mmH ₂ o, the occlusion pressure is monitored at 350 mmH ₂ o or less, and it is judged as abnormal when the monitored pressure value deviates three times a week (S20). Further, it is also determined to be abnormal when the identification result that the use side container stored in the non-volatile storage means 9 is on the left side is changed, that is, when the lever is switched from left to right (S20). In addition, it is also determined that the empty signal is output (S20). Further, the abnormality signal is output even when the replacement time of the supply equipment stored in the nonvolatile storage means 9 is deviated (S20). Next, when the pressure monitoring means 6 determines an abnormality, the communication means 10 uses the telephone line via the network control means 13 to notify the LP gas supply company of the abnormality content (S21). Upon receipt of the notification, a staff member dispatched to the site replaces the empty container and correctly sets the relationship between the spare container side (left) and the user side (right) by operating the lever. The nonvolatile storage means 9 stores the pressure value in the fluid supply pipe measured by the pressure measuring means 5, the number of times of use of the fluid measured by the number-of-uses measuring means 14, the abnormal regulation pressure and the abnormal closing pressure determined by the pressure monitoring means 6. And the like, the identification result of the use side container and the spare container identified by the identification unit 15, the presence / absence of an empty signal output by the container management unit 16, the calendar managed by the timer unit 17, and the date and time of occurrence of an abnormality are recorded (S22). .

In this embodiment, the contents stored in the non-volatile storage means 9 can be read / written from the outside by using a telephone line, and the information necessary for the normal operation of the device and the abnormal information are cleared at the start of pressure monitoring. Write after password input from outside.

With the above configuration, the pressure monitoring such as the adjusting pressure, the closing pressure, the abnormal value of the adjusting pressure, the abnormal value of the closing pressure, the abnormal value of the closing pressure, the abnormal value of the closing pressure, which is the pressure information in the pipe for supplying the fluid to the nonvolatile storage means 9, and the like are monitored. Information and a judgment value for judging an abnormality,
Setting values required for pressure measurement, identification result of use side container and spare container, presence / absence of empty signal, calendar, pressure monitoring start date and abnormal occurrence date and time, supply equipment regular replacement time, callee telephone number and customer identification code Also, it works to store operation information such as set values required for data transmission to the outside such as instrument numbers and passwords required when reading and writing data, and pressure is applied even if the microcomputer malfunctions due to noise or power failure. Since it is possible to retain monitoring information and operation information, pressure monitoring information is used to promote maintenance and regular replacement of supply equipment, such as regulator failure / corrosion deterioration / damage, gas leak detection due to supply pipe deterioration / corrosion, etc. When configuring a system that facilitates, the reliability of the system is improved and the security of customers is significantly improved. Further, in the present embodiment, the nonvolatile memory means 9 is constituted not by a magnetic recording element or a magneto-optical memory element but by an EEPROM so that the current consumption during reading and writing is reduced, and the device is operated by the battery 12. It is possible to operate it for a long time (for example, 10 years) with the power supply of.

Even if a flash memory is used, a similar reduction in current consumption can be achieved, and it becomes possible to operate for a long period of time with the power source of the battery 12 of the device. Furthermore, it can also be used as a self-recording pressure gauge.

Even if the non-volatile memory means 9 is constructed inside the microcomputer, the same effect is obtained, and the operation area for reducing the board and the number of parts are reduced, and the cost can be reduced.

The third embodiment will be described with reference to FIG. The same parts as those in FIGS. 1 and 3 of the first and second embodiments are designated by the same reference numerals. 18 is fixed to the device, an abnormal judgment value, a set value necessary for pressure measurement, a discrimination result between a using container and a spare container, presence / absence of an empty signal, a calendar, a pressure monitoring start date and an abnormality occurrence date, and a supply equipment regular replacement time,
A non-volatile fixed unit that stores operation information such as a setting value required for data transmission to the outside such as a call destination telephone number, a customer identification code, a device number, and a password required when reading and writing data, 19 Is a non-volatile replacement unit that stores pressure monitoring information such as the adjusted pressure, the closed pressure, the abnormal value of the adjusted pressure, the abnormal value of the closed pressure, and the number of times the fluid has been used, which is the pressure information in the pipe for supplying the fluid. The replacement unit 19 of this embodiment uses a card-type nonvolatile memory element. The fixed unit 18 and the replacement unit 19 constitute the non-volatile storage means 9. Reference numeral 20 denotes a storage area management unit that manages the storage area of the replacement unit 19 and notifies the replacement time to the outside via the communication unit 10 when the free storage area becomes smaller than a preset threshold value. In the present embodiment, when it becomes impossible to secure an area for storing the daily pressure monitoring information for one week as the threshold value, it is time to replace the replacement unit 19.

In this embodiment, the fixed part 18 and the replacement part 19 are composed of EEPROMs, and data is input / output by serial communication.

The flow rate sensor 1 to the battery 12 and the number-of-uses measuring means 14 to the storage area managing means 20 constitute the pressure monitoring device of the third embodiment.

Next, the operation of this embodiment will be described in detail with reference to the flowchart of FIG. The pressure monitoring means 6 is
It is determined whether or not the pressure value measured by the pressure measuring means 5 deviates from a threshold value set in advance for determining an abnormal state. In this embodiment, the adjustment pressure is set from 255 mmH ₂ o to 3 mm.
Monitor at 30 mm H ₂ o and occlusion pressure below 350 mm H ₂ o. Then, when the monitored pressure value deviates three times a week, it is regarded as abnormal. In addition, when it is detected that the identification result that the use side container stored in the non-volatile storage means 9 is on the left side, that is, the lever is switched from left to right, it is also regarded as abnormal. It is also considered abnormal when an empty signal is output. In addition, the abnormality signal is output even when the supply facility replacement time stored in the non-volatile storage means 9 is exceeded. Then, the input / output unit 8 identifies the daily pressure monitoring information such as the pressure value in the fluid supply pipe, the number of times the flow rate is turned on, and the abnormality content (S31), and stores it in the nonvolatile replacement unit 19 (S32). Next, when the daily pressure monitoring information is written in the replacement unit 19, the storage area management unit 20 determines whether the remaining storage area of the replacement unit 19 can secure an area for storing the pressure monitoring information for one week. (S34) If the empty area cannot be secured, the information is transmitted to the gas supply company via the communication means 10 as the empty area is insufficient and the replacement unit needs to be replaced (S35). Upon receipt of the information, the supply company dispatches a staff member to the site, and the replacement unit 1
9 is replaced with a new one, and the replacement unit 19 in which the daily pressure monitoring information is full is pulled up and stored as supply facility management information. Also, the abnormal judgment value, the set value required for pressure measurement, the discrimination result between the container on the use side and the spare container, the presence or absence of an empty signal,
When reading / writing data, such as calendar, pressure monitoring start date / error occurrence date / time, supply equipment regular replacement time, call destination telephone number / customer identification code / device number, etc. The operation information such as the required password is stored in the non-volatile fixed unit 18 (S3).
3).

In this embodiment, the contents stored in the non-volatile storage means 9 can be read and written from the outside using a telephone line, and when the pressure monitoring is started, the information necessary for the pressure monitoring device to operate normally is provided. Is written externally after entering the password.

With the above configuration, the removable replacement unit 19 acts to store the daily pressure monitoring information, and even if the microcomputer malfunctions due to noise or power supply abnormality, the daily pressure monitoring information is surely retained. Since it is a card type, pressure monitoring information can be easily stored continuously,
It is possible not only to monitor the deterioration of supply facilities accurately but also to significantly improve the security of customers, but also to automate the periodic inspection of supply facilities.

Further, the storage area management means 20 acts to manage the free storage area of the replacement section 19, and by knowing in advance the fullness of the daily pressure monitoring information, the pressure monitoring information can be surely saved. I can go.

Although the EEPROM is used in this embodiment, the same effect can be obtained by using a flash memory card, and a large storage area can be secured by one card, so that the replacement cycle becomes long. The number of replacement work steps can be reduced.

The fourth embodiment will be described with reference to FIG. The same parts as those in FIGS. 1 and 3 of the first and second embodiments are designated by the same reference numerals. Reference numeral 21 is an abnormality detecting means for outputting an abnormal signal when the pressure monitoring device deviates from the normal operation due to the influence of noise or the like. 22 is an abnormality determination value stored in the fixed part 18, a set value required for pressure measurement, a discrimination result between the use side container and the spare container, presence / absence of an empty signal, a calendar, a pressure monitoring start date and an abnormality occurrence date and time, and a supply facility regular Reboot to restart the device with the operation information such as the replacement time, the telephone number to be called, the customer identification code and the device number, etc. necessary for data transmission with the outside and the password required when reading and writing data. When the device 23 deviates from the normal operation due to the influence of noise or the like and the resetting device 22 restarts the pressure monitoring device, the communication device 10 transmits the data via the telephone line to the gas supply company so that the device can be operated. It is a correction means for checking information such as a calendar necessary for normal operation and correcting if there is an error in the content. The abnormality detecting means 21 to the correcting means 23 are composed of the microcomputer 10, and the abnormality detecting means 17 of this embodiment has a watchdog timer function in which the microcomputer 11 manages the program address and detects an abnormal state.

The flow rate sensor 1 to the battery 12 and the number-of-uses measuring means 14 to the correcting means 23 constitute the pressure monitoring device of this embodiment.

Next, the operation of this embodiment will be described in detail with reference to the flowchart of FIG. When the microcomputer 11 is deviated from the normal operation due to noise or the like and is initialized (power supply reset state), the resetting means 22 stores the abnormality determination value stored in the fixed portion 18, the set value required for pressure measurement, the use side container, and the like. In order to transmit data to the outside such as the identification result of spare container, presence / absence of empty signal, calendar, pressure monitoring start date and time and abnormality occurrence date and time, supply equipment regular replacement time, callee telephone number, customer identification code and instrument number etc. The input / output unit 8 reads out operation information such as a necessary set value and a password required when reading / writing data (S41), and stores the operation information in each predetermined constituent means (RAM) (S42). Next, a RAM check is performed (S43), and if there is a problem in the RAM area,
Since normal operation cannot be guaranteed, the gas supply company is contacted via the communication means 10 and a display indicating that an abnormal state is present is displayed (S45). Further, if there is no problem in the RAM check, the correction unit 23 determines the operation information necessary for the device such as the current date and time information received by the communication unit 10 from the gas supply company via the telephone line to continue normal operation. Check the contents and correct any errors.

With the above configuration, when the replacement section 19 is filled with the pressure monitoring information and the apparatus deviates from the normal operation due to static electricity charged to the worker during the replacement work or other influences, the resetting means 22 is fixed. The operation information stored in 18 acts to automatically restore the device without the replacement unit 19, and pressure monitoring can be continued.

Further, when the device deviates from the normal operation due to the influence of noise or the like and the restoring means 22 restarts the device, the correcting means 23 transmits the data to the outside and the pressure monitoring device after the restoration operates normally. Checks the content of information required to continue and corrects any abnormal data (for example, a calendar) so that pressure monitoring can be continued accurately and maintenance of gas supply equipment and promotion of regular replacement can be judged. The reliability of date and time data, etc. is improved, and poisoning death and explosion accident caused by gas leakage due to deterioration of gas supply equipment can be prevented.

[0052]

As described above, according to the present invention, even if the device deviates from the normal operation due to a power supply abnormality or other influences, the non-volatile memory means the regulated pressure and the blockage which are the pressure information in the pipe. It works to store pressure monitoring information such as abnormal values of pressure and regulated pressure and abnormal value of blockage pressure, and it is possible to reliably retain daily pressure monitoring information even if the microcomputer malfunctions due to noise or power supply abnormality. Therefore, when configuring a system that facilitates maintenance and regular replacement of supply equipment, such as regulator failure / corrosion deterioration / damage, gas leakage detection due to supply pipe deterioration / corrosion, etc., using pressure monitoring information. Improves reliability.

Further, the adjusting pressure and the closing pressure, which are the pressure information in the pipe for supplying the fluid to the nonvolatile storage means, the abnormal value of the adjusting pressure and the abnormal value of the closing pressure, the number of times of use of the fluid, the supply pressure during use. (Adjustment pressure) Abnormality and supply pressure (blocking pressure) abnormality at the end of use Judgment results such as pressure monitoring information, judgment value for judging abnormality, set value necessary for pressure measurement, use side container and spare container Settings required for data transmission such as identification results, presence / absence of empty signal, calendar, pressure monitoring start date and abnormal occurrence date and time, regular replacement of supply equipment, callee telephone number, customer identification code and instrument number It acts to store operation information such as a password required when reading and writing values and data, and it is possible to retain pressure monitoring information and operation information even if the microcomputer malfunctions due to noise or a power supply abnormality.

Further, the replacement unit, which is a non-volatile storage unit that can be removed, stores the daily pressure monitoring information, and the daily pressure monitoring information is stored even if the device malfunctions due to a power failure or other influence. It is possible to securely keep records and, because it is a replaceable type, it is possible to easily store the pressure monitoring information continuously, and it is possible to accurately monitor changes such as deterioration of the fluid supply equipment, greatly improving the security of customers. In addition to the above, the work such as periodic inspection of the fluid supply equipment and data management can be automated, and the labor cost of the fluid supply company can be significantly reduced.

Further, the storage area management means functions to manage the empty storage area of the replacement section, and the pressure monitoring information is continuously stored by knowing in advance the fullness of the pressure monitoring information recorded every day in advance. It is possible to improve the reliability of the data for judging the maintenance and regular exchange promotion of the fluid supply equipment, and prevent the poisoning death and the explosion accident caused by the leakage of the supply fluid due to the deterioration of the fluid supply equipment. be able to.

Further, when the replacement part is full of pressure monitoring information and the pressure monitoring device deviates from normal operation due to static electricity charged to the worker during the replacement work, or due to other influences, the pressure monitoring device becomes normal. When the operation is deviated, the return means operates to automatically return the pressure monitoring device with the operation information stored in the fixed part, and the pressure monitoring can be continued even if there is no operator for the return, and the reliability is improved. It is possible to improve labor costs and reduce labor costs.

Furthermore, when the pressure monitoring device deviates from the normal operation due to the influence of noise and the restoring means restarts the pressure monitoring device, the correcting means performs the data transmission with the outside to make the restored device operate normally. It confirms the contents of the prescribed data required for continuation and corrects any abnormal data (for example, a calendar) so that pressure monitoring can be continued accurately and the maintenance and regular replacement of fluid supply equipment is promoted. It is possible to prevent the poisoning death and the explosion accident caused by the leakage of the supply fluid due to the deterioration of the fluid supply equipment, etc., because the reliability of the date and time data etc. for judging is improved.

[Brief description of drawings]

FIG. 1 is a block diagram of a pressure monitoring device according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing an operation in the same device.

FIG. 3 is a block diagram of a pressure monitoring device according to a second embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the apparatus.

FIG. 5 is a block diagram of a pressure monitoring device according to a third embodiment of the present invention.

FIG. 6 is a flowchart showing the operation of the apparatus.

FIG. 7 is a block diagram of a monitoring device according to a fourth embodiment of the present invention.

FIG. 8 is a flowchart showing the operation of the apparatus.

FIG. 9 is a block diagram of a conventional gas meter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flow rate sensor 2 Flow rate change detection means 5 Pressure measurement means 6 Pressure monitoring means 9 Non-volatile storage means 14 Number of times of use measurement means 15 Identification means 16 Container management means 17 Timer means 18 Fixing part 19 Replacement part 20 Storage area management means 21 Abnormality detection Means 22 Returning means 23 Correcting means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideto, 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (7)

[Claims] 1. A flow rate sensor that detects a flow rate state of whether or not a fluid is flowing and outputs a flow rate signal, and a flow rate change detection that detects a change in the flow rate state of the fluid based on the flow rate signal and outputs a flow rate change signal. Means, a pressure measuring means for measuring the pressure of the fluid according to the flow rate change signal, and an abnormality when the pressure measured by the pressure measuring means deviates from a threshold value set in advance for determining an abnormal state. A pressure monitoring device comprising: a pressure monitoring unit for determining; and a non-volatile storage unit for storing a pressure measured by the pressure measuring unit and a measured pressure determined by the pressure monitoring unit as abnormal. 2. A number-of-uses measuring means for measuring the number of times the fluid is used based on a flow rate change signal, an identifying means for distinguishing a use-side container supplying a fluid and a spare container, and a fluid remaining amount in the use-side container in advance. It has a container management means for outputting an empty signal when it becomes less than or equal to a set threshold value, a timer means for managing a calendar, and a communication means for exchanging data with the outside, and the nonvolatile storage means has at least a pressure measuring means. The pressure value in the fluid supply pipe to be measured, the number of times the fluid has been used,
Pressure monitoring means judges the supply pressure (adjustment pressure) abnormality during use of fluid and the supply pressure (blocking pressure) abnormality at the end of fluid use, the judgment value for judging abnormality, and necessary for pressure measurement. Set value, identification result of used side container and spare container, presence / absence of empty signal, calendar, pressure monitoring start date and error occurrence date and time, supply equipment regular replacement time, password required when reading and writing nonvolatile storage means, calling The pressure monitoring device according to claim 1, wherein set values necessary for data transmission to the outside, such as a destination telephone number, a customer identification code, and a device number, are stored. 3. The pressure monitoring device according to claim 1, wherein the non-volatile storage means comprises a fixed part fixed to the pressure monitoring device and a removable replacement part. 4. The fixed part is provided with at least a judgment value for judging an abnormality, a set value necessary for pressure measurement, a discrimination result between a using side container and a spare container, presence / absence of an empty signal, a calendar, a pressure monitoring start date and supply. Stores operation information including setting values required for data transmission with the outside such as equipment periodical replacement time, call destination telephone number, customer identification code, and instrument number, and the replacement unit stores at least the customer identification code and password. The pressure monitoring device according to claim 3, which stores pressure monitoring information including a pressure value in the fluid supply pipe, the number of times the flow rate has been used, the type of abnormality, and the date and time of occurrence. 5. The pressure monitoring apparatus according to claim 3, further comprising storage area management means for managing an empty storage area of the replacement section and notifying the replacement time to the outside when a preset replacement time of the replacement section comes. 6. A pressure using an abnormality detecting means for outputting an abnormal operation signal when the pressure monitoring device deviates from a normal operation due to noise or the like, and operation information stored in a fixed portion according to the abnormal operation signal. The pressure monitoring device according to claim 3, further comprising return means for restarting the monitoring device. 7. When the pressure monitoring device deviates from a normal operation due to noise or the like and the restoring means restarts the pressure monitoring device, correctness of the operation information is confirmed by data transmission with the outside, and the content is incorrect. 7. The pressure monitoring device according to claim 6, further comprising a correction unit that corrects the content if there is any.